diff --git a/assets/js/admin.js b/assets/js/admin.js
index fda06b3..aa4ac7a 100644
--- a/assets/js/admin.js
+++ b/assets/js/admin.js
@@ -9,6 +9,7 @@ jQuery(document).ready(function($) {
         return;
     }
 
+    // Tab navigation
     $('.wpavatar-tab').on('click', function() {
         var tab = $(this).data('tab');
         if (!tab) return;
@@ -21,7 +22,11 @@ jQuery(document).ready(function($) {
 
         if (tab === 'cache' && $('#cache-stats').is(':empty')) {
             setTimeout(function() {
-                $('#check-cache').trigger('click');
+                if (wpavatar.is_network_admin === '1') {
+                    $('#check-all-cache').trigger('click');
+                } else {
+                    $('#check-cache').trigger('click');
+                }
             }, 300);
         }
 
@@ -32,6 +37,7 @@ jQuery(document).ready(function($) {
         }
     });
 
+    // CDN options management
     function updateCdnOptions() {
         var selectedType = $('input[name="wpavatar_cdn_type"]:checked').val();
 
@@ -53,23 +59,32 @@ jQuery(document).ready(function($) {
         if (value && value.toLowerCase().indexOf('cravatar') !== -1) {
             forceMd5HashMethod(true);
         } else {
-            // 非Cravatar服务默认选择SHA256，但不强制
-            var currentHashMethod = $('input[name="wpavatar_hash_method"]:checked').val();
-            if (!currentHashMethod) {
-                $('input[name="wpavatar_hash_method"][value="sha256"]').prop('checked', true);
-            }
             forceMd5HashMethod(false);
         }
     }
 
     function forceMd5HashMethod(force) {
         if (force) {
+            // Save the current user-selected hash method to restore later if needed
+            var currentMethod = $('input[name="wpavatar_hash_method"]:checked').val();
+            if (currentMethod) {
+                $(this).data('previous-hash-method', currentMethod);
+            }
+
+            // Force MD5 and disable SHA256 option
             $('input[name="wpavatar_hash_method"][value="md5"]').prop('checked', true);
             $('input[name="wpavatar_hash_method"][value="sha256"]').prop('disabled', true);
             $('.hash-method-notice').show();
         } else {
+            // Restore disabled state, but don't change selection
             $('input[name="wpavatar_hash_method"][value="sha256"]').prop('disabled', false);
             $('.hash-method-notice').hide();
+
+            // Restore previous selection (if any)
+            var previousMethod = $(this).data('previous-hash-method');
+            if (previousMethod && previousMethod === 'sha256') {
+                $('input[name="wpavatar_hash_method"][value="sha256"]').prop('checked', true);
+            }
         }
     }
 
@@ -85,6 +100,7 @@ jQuery(document).ready(function($) {
         checkIfCravatarRelated($(this).val());
     });
 
+    // Cache management for single site
     $('#check-cache').on('click', function() {
         var $button = $(this);
         var $stats = $('#cache-stats');
@@ -165,6 +181,111 @@ jQuery(document).ready(function($) {
         });
     });
 
+    // Cache management for network admin
+    if (wpavatar.is_network_admin === '1') {
+        $('#check-all-cache').on('click', function() {
+            var $button = $(this);
+            var $stats = $('#cache-stats');
+
+            $button.prop('disabled', true).text(wpavatar_l10n.checking);
+            $stats.html('<p>' + wpavatar_l10n.checking_status + '</p>');
+
+            $.ajax({
+                type: 'POST',
+                url: wpavatar.ajaxurl,
+                data: {
+                    action: 'wpavatar_check_all_cache',
+                    nonce: wpavatar.nonce
+                },
+                success: function(response) {
+                    if (response.success) {
+                        $stats.html(response.data);
+                    } else {
+                        $stats.html('<div class="error"><p>' + (response.data || wpavatar_l10n.check_failed) + '</p></div>');
+                    }
+                },
+                error: function() {
+                    $stats.html('<div class="error"><p>' + wpavatar_l10n.request_failed + '</p></div>');
+                },
+                complete: function() {
+                    $button.prop('disabled', false).text('查看所有站点缓存');
+                }
+            });
+        });
+
+        $('#purge-all-cache').on('click', function() {
+            var $button = $(this);
+            var $stats = $('#cache-stats');
+            var $status = $('#wpavatar-status');
+
+            if (!confirm(wpavatar_l10n.confirm_purge)) {
+                return;
+            }
+
+            $button.prop('disabled', true).text(wpavatar_l10n.purging);
+            $stats.html('<p>' + wpavatar_l10n.purging_cache + '</p>');
+
+            $.ajax({
+                type: 'POST',
+                url: wpavatar.ajaxurl,
+                data: {
+                    action: 'wpavatar_purge_all_cache',
+                    nonce: wpavatar.nonce
+                },
+                success: function(response) {
+                    if (response.success) {
+                        $status.removeClass('notice-error')
+                               .addClass('notice-success')
+                               .text(response.data)
+                               .show()
+                               .delay(3000)
+                               .fadeOut();
+
+                        setTimeout(function() {
+                            $('#check-all-cache').trigger('click');
+                        }, 1000);
+                    } else {
+                        $status.removeClass('notice-success')
+                               .addClass('notice-error')
+                               .text(response.data || wpavatar_l10n.purge_failed)
+                               .show();
+                    }
+                },
+                error: function() {
+                    $status.removeClass('notice-success')
+                           .addClass('notice-error')
+                           .text(wpavatar_l10n.request_failed)
+                           .show();
+                },
+                complete: function() {
+                    $button.prop('disabled', false).text('清空所有站点缓存');
+                }
+            });
+        });
+
+        // Network management controls
+        if ($('#select-all-options').length) {
+            $('#select-all-options').on('click', function() {
+                $('input[name="wpavatar_network_controlled_options[]"]').prop('checked', true);
+            });
+
+            $('#deselect-all-options').on('click', function() {
+                $('input[name="wpavatar_network_controlled_options[]"]').prop('checked', false);
+            });
+
+            $('#reset-default-options').on('click', function() {
+                if (confirm(wpavatar_l10n.confirm_reset)) {
+                    var defaultOptions = ['wpavatar_enable_cravatar', 'wpavatar_cdn_type', 'wpavatar_cravatar_route', 'wpavatar_third_party_mirror', 'wpavatar_custom_cdn'];
+
+                    $('input[name="wpavatar_network_controlled_options[]"]').each(function() {
+                        $(this).prop('checked', defaultOptions.indexOf($(this).val()) !== -1);
+                    });
+                }
+            });
+        }
+    }
+
+    // Form validation
     $('#wpavatar-basic-form, #wpavatar-cache-form, #wpavatar-advanced-form, #wpavatar-shortcodes-form').on('submit', function(e) {
         var formId = $(this).attr('id');
         var $status = $('#wpavatar-status');
@@ -202,6 +323,28 @@ jQuery(document).ready(function($) {
         return true;
     });
 
+    // For network import and bulk operations
+    if ($('#import-site-settings').length) {
+        $('#import-site-settings').on('click', function(e) {
+            if (!confirm(wpavatar_l10n.confirm_import)) {
+                e.preventDefault();
+                return false;
+            }
+            return true;
+        });
+    }
+
+    if ($('#apply-to-all-sites').length) {
+        $('#apply-to-all-sites').on('click', function(e) {
+            if (!confirm('确定要将网络设置应用到所有站点吗？此操作将覆盖每个站点的现有设置。')) {
+                e.preventDefault();
+                return false;
+            }
+            return true;
+        });
+    }
+
+    // Settings saved notification
     if (window.location.search.indexOf('settings-updated=true') > -1) {
         $('#wpavatar-status')
             .removeClass('notice-error')
@@ -212,6 +355,29 @@ jQuery(document).ready(function($) {
             .fadeOut();
     }
 
+    // Import settings notification
+    if (window.location.search.indexOf('imported=true') > -1) {
+        $('#wpavatar-status')
+            .removeClass('notice-error')
+            .addClass('notice-success')
+            .text('站点设置已成功导入到网络设置。')
+            .show()
+            .delay(3000)
+            .fadeOut();
+    }
+
+    // Applied to all sites notification
+    if (window.location.search.indexOf('applied=true') > -1) {
+        $('#wpavatar-status')
+            .removeClass('notice-error')
+            .addClass('notice-success')
+            .text('网络设置已成功应用到所有站点。')
+            .show()
+            .delay(3000)
+            .fadeOut();
+    }
+
+    // Set active tab
     var currentTab = '';
 
     if (window.location.search.indexOf('tab=') > -1) {
diff --git a/includes/admin.php b/includes/admin.php
index ab1a9a7..441c08c 100644
--- a/includes/admin.php
+++ b/includes/admin.php
@@ -81,9 +81,32 @@ class Settings {
             return get_option('wpavatar_cache_path', WPAVATAR_CACHE_DIR);
         }
 
-        $index_file = $value . 'index.php';
-        if (!file_exists($index_file)) {
-            @file_put_contents($index_file, '<?php // Silence is golden.');
+        // If multisite, ensure the site-specific cache directory exists
+        if (is_multisite()) {
+            $blog_id = get_current_blog_id();
+            $site_cache_dir = trailingslashit($value) . 'site-' . $blog_id;
+
+            if (!file_exists($site_cache_dir)) {
+                if (!wp_mkdir_p($site_cache_dir)) {
+                    add_settings_error(
+                        'wpavatar_cache',
+                        'cache_path_invalid',
+                        __('无法创建站点缓存目录，请检查权限', 'wpavatar'),
+                        'error'
+                    );
+                    return get_option('wpavatar_cache_path', WPAVATAR_CACHE_DIR);
+                }
+            }
+
+            $index_file = $site_cache_dir . '/index.php';
+            if (!file_exists($index_file)) {
+                @file_put_contents($index_file, '<?php // Silence is golden.');
+            }
+        } else {
+            $index_file = $value . 'index.php';
+            if (!file_exists($index_file)) {
+                @file_put_contents($index_file, '<?php // Silence is golden.');
+            }
         }
 
         return $value;
@@ -112,9 +135,11 @@ class Settings {
         wp_localize_script('wpavatar-admin', 'wpavatar', [
             'nonce' => wp_create_nonce('wpavatar_admin_nonce'),
             'ajaxurl' => admin_url('admin-ajax.php'),
-            'cache_path' => get_option('wpavatar_cache_path', WPAVATAR_CACHE_DIR),
+            'cache_path' => wpavatar_get_option('wpavatar_cache_path', WPAVATAR_CACHE_DIR),
             'plugin_url' => WPAVATAR_PLUGIN_URL,
             'assets_url' => WPAVATAR_PLUGIN_URL . 'assets/',
+            'is_network_admin' => '0',
+            'is_multisite' => is_multisite() ? '1' : '0',
         ]);
 
         wp_localize_script('wpavatar-admin', 'wpavatar_l10n', [
@@ -142,6 +167,17 @@ class Settings {
     }
 
     public static function render_settings_page() {
+        // Check for network control in multisite
+        if (is_multisite()) {
+            $network_enabled = get_site_option('wpavatar_network_enabled', 1);
+            $network_enforce = get_site_option('wpavatar_network_enforce', 0);
+            $network_controlled_options = get_site_option('wpavatar_network_controlled_options', array());
+
+            if (!is_array($network_controlled_options)) {
+                $network_controlled_options = explode(',', $network_controlled_options);
+            }
+        }
+
         $active_tab = isset($_GET['tab']) ? sanitize_text_field($_GET['tab']) : 'basic';
         ?>
         <div class="wrap wpavatar-settings">
@@ -174,24 +210,66 @@ class Settings {
                 <h2><?php _e('基础设置', 'wpavatar'); ?></h2>
                 <p class="wpavatar-section-desc"><?php _e('配置头像服务和CDN设置。', 'wpavatar'); ?></p>
 
+                <?php if (is_multisite() && $network_enabled): ?>
+                <div class="wpavatar-network-notice">
+                    <p>
+                        <?php if (in_array('wpavatar_enable_cravatar', $network_controlled_options)): ?>
+                            <span class="dashicons dashicons-lock"></span> <?php _e('启用初认头像', 'wpavatar'); ?><br>
+                        <?php endif; ?>
+                        <?php if (in_array('wpavatar_cdn_type', $network_controlled_options)): ?>
+                            <span class="dashicons dashicons-lock"></span> <?php _e('线路选择', 'wpavatar'); ?><br>
+                        <?php endif; ?>
+                        <?php if (in_array('wpavatar_cravatar_route', $network_controlled_options)): ?>
+                            <span class="dashicons dashicons-lock"></span> <?php _e('Cravatar官方源', 'wpavatar'); ?><br>
+                        <?php endif; ?>
+                        <?php if (in_array('wpavatar_third_party_mirror', $network_controlled_options)): ?>
+                            <span class="dashicons dashicons-lock"></span> <?php _e('第三方镜像', 'wpavatar'); ?><br>
+                        <?php endif; ?>
+                        <?php if (in_array('wpavatar_custom_cdn', $network_controlled_options)): ?>
+                            <span class="dashicons dashicons-lock"></span> <?php _e('自定义CDN', 'wpavatar'); ?><br>
+                        <?php endif; ?>
+                        <?php if (in_array('wpavatar_hash_method', $network_controlled_options)): ?>
+                            <span class="dashicons dashicons-lock"></span> <?php _e('头像哈希方法', 'wpavatar'); ?><br>
+                        <?php endif; ?>
+                        <?php if (in_array('wpavatar_timeout', $network_controlled_options)): ?>
+                            <span class="dashicons dashicons-lock"></span> <?php _e('超时设置', 'wpavatar'); ?><br>
+                        <?php endif; ?>
+
+                        <?php if (array_intersect(['wpavatar_enable_cravatar', 'wpavatar_cdn_type', 'wpavatar_cravatar_route', 'wpavatar_third_party_mirror', 'wpavatar_custom_cdn', 'wpavatar_hash_method', 'wpavatar_timeout'], $network_controlled_options)): ?>
+                            <em><?php _e('以上选项由网络管理员控制，您的更改将不会生效。', 'wpavatar'); ?></em>
+                        <?php endif; ?>
+                    </p>
+                </div>
+                <?php endif; ?>
+
                 <form method="post" action="options.php" id="wpavatar-basic-form">
                     <?php
                     settings_fields('wpavatar_basic');
 
-                    $enable_cravatar = get_option('wpavatar_enable_cravatar', 1);
-                    $cdn_type = get_option('wpavatar_cdn_type', 'cravatar_route');
-                    $cravatar_route = get_option('wpavatar_cravatar_route', 'cravatar.com');
-                    $third_party_mirror = get_option('wpavatar_third_party_mirror', 'weavatar.com');
-                    $custom_cdn = get_option('wpavatar_custom_cdn', '');
-                    $hash_method = get_option('wpavatar_hash_method', 'md5');
-                    $timeout = get_option('wpavatar_timeout', 5);
+                    // Get option values using wpavatar_get_option instead of get_option
+                    $enable_cravatar = wpavatar_get_option('wpavatar_enable_cravatar', 1);
+                    $cdn_type = wpavatar_get_option('wpavatar_cdn_type', 'cravatar_route');
+                    $cravatar_route = wpavatar_get_option('wpavatar_cravatar_route', 'cravatar.com');
+                    $third_party_mirror = wpavatar_get_option('wpavatar_third_party_mirror', 'weavatar.com');
+                    $custom_cdn = wpavatar_get_option('wpavatar_custom_cdn', '');
+                    $hash_method = wpavatar_get_option('wpavatar_hash_method', 'md5');
+                    $timeout = wpavatar_get_option('wpavatar_timeout', 5);
+
+                    // Determine if fields should be disabled in multisite
+                    $disabled_enable_cravatar = (is_multisite() && $network_enabled && in_array('wpavatar_enable_cravatar', $network_controlled_options)) ? 'disabled' : '';
+                    $disabled_cdn_type = (is_multisite() && $network_enabled && in_array('wpavatar_cdn_type', $network_controlled_options)) ? 'disabled' : '';
+                    $disabled_cravatar_route = (is_multisite() && $network_enabled && in_array('wpavatar_cravatar_route', $network_controlled_options)) ? 'disabled' : '';
+                    $disabled_third_party_mirror = (is_multisite() && $network_enabled && in_array('wpavatar_third_party_mirror', $network_controlled_options)) ? 'disabled' : '';
+                    $disabled_custom_cdn = (is_multisite() && $network_enabled && in_array('wpavatar_custom_cdn', $network_controlled_options)) ? 'disabled' : '';
+                    $disabled_hash_method = (is_multisite() && $network_enabled && in_array('wpavatar_hash_method', $network_controlled_options)) ? 'disabled' : '';
+                    $disabled_timeout = (is_multisite() && $network_enabled && in_array('wpavatar_timeout', $network_controlled_options)) ? 'disabled' : '';
                     ?>
                     <table class="form-table">
                         <tr>
                             <th><?php _e('启用初认头像', 'wpavatar'); ?></th>
                             <td>
                                 <label class="wpavatar-switch">
-                                    <input type="checkbox" name="wpavatar_enable_cravatar" value="1" <?php checked($enable_cravatar); ?>>
+                                    <input type="checkbox" name="wpavatar_enable_cravatar" value="1" <?php checked($enable_cravatar); ?> <?php echo $disabled_enable_cravatar; ?>>
                                     <span class="wpavatar-slider"></span>
                                     <span class="wpavatar-switch-label"><?php _e('替换WordPress默认头像为Cravatar', 'wpavatar'); ?></span>
                                 </label>
@@ -202,15 +280,15 @@ class Settings {
                             <th><?php _e('线路选择', 'wpavatar'); ?></th>
                             <td>
                                 <label class="wpavatar-radio">
-                                    <input type="radio" name="wpavatar_cdn_type" value="cravatar_route" <?php checked($cdn_type, 'cravatar_route'); ?>>
+                                    <input type="radio" name="wpavatar_cdn_type" value="cravatar_route" <?php checked($cdn_type, 'cravatar_route'); ?> <?php echo $disabled_cdn_type; ?>>
                                     <span class="wpavatar-radio-label"><?php _e('Cravatar自选线路', 'wpavatar'); ?></span>
                                 </label><br>
                                 <label class="wpavatar-radio">
-                                    <input type="radio" name="wpavatar_cdn_type" value="third_party" <?php checked($cdn_type, 'third_party'); ?>>
+                                    <input type="radio" name="wpavatar_cdn_type" value="third_party" <?php checked($cdn_type, 'third_party'); ?> <?php echo $disabled_cdn_type; ?>>
                                     <span class="wpavatar-radio-label"><?php _e('第三方镜像', 'wpavatar'); ?></span>
                                 </label><br>
                                 <label class="wpavatar-radio">
-                                    <input type="radio" name="wpavatar_cdn_type" value="custom" <?php checked($cdn_type, 'custom'); ?>>
+                                    <input type="radio" name="wpavatar_cdn_type" value="custom" <?php checked($cdn_type, 'custom'); ?> <?php echo $disabled_cdn_type; ?>>
                                     <span class="wpavatar-radio-label"><?php _e('自定义CDN', 'wpavatar'); ?></span>
                                 </label>
                             </td>
@@ -218,7 +296,7 @@ class Settings {
                         <tr class="cdn-option cravatar-route-option" <?php echo $cdn_type !== 'cravatar_route' ? 'style="display:none;"' : ''; ?>>
                             <th><?php _e('Cravatar官方源', 'wpavatar'); ?></th>
                             <td>
-                                <select name="wpavatar_cravatar_route" class="wpavatar-select">
+                                <select name="wpavatar_cravatar_route" class="wpavatar-select" <?php echo $disabled_cravatar_route; ?>>
                                     <option value="cravatar.cn" <?php selected($cravatar_route, 'cravatar.cn'); ?>><?php _e('默认线路 (cravatar.com)', 'wpavatar'); ?></option>
                                     <option value="cn.cravatar.com" <?php selected($cravatar_route, 'cn.cravatar.com'); ?>><?php _e('中国 (cn.cravatar.com)', 'wpavatar'); ?></option>
                                     <option value="hk.cravatar.com" <?php selected($cravatar_route, 'hk.cravatar.com'); ?>><?php _e('香港 (hk.cravatar.com)', 'wpavatar'); ?></option>
@@ -230,7 +308,7 @@ class Settings {
                         <tr class="cdn-option third-party-option" <?php echo $cdn_type !== 'third_party' ? 'style="display:none;"' : ''; ?>>
                             <th><?php _e('第三方镜像', 'wpavatar'); ?></th>
                             <td>
-                                <select name="wpavatar_third_party_mirror" class="wpavatar-select">
+                                <select name="wpavatar_third_party_mirror" class="wpavatar-select" <?php echo $disabled_third_party_mirror; ?>>
                                     <option value="weavatar.com" <?php selected($third_party_mirror, 'weavatar.com'); ?>><?php _e('WeAvatar (weavatar.com)', 'wpavatar'); ?></option>
                                     <option value="libravatar.org" <?php selected($third_party_mirror, 'libravatar.org'); ?>><?php _e('Libravatar (libravatar.org)', 'wpavatar'); ?></option>
                                     <option value="gravatar.loli.net" <?php selected($third_party_mirror, 'gravatar.loli.net'); ?>><?php _e('Loli镜像 (gravatar.loli.net)', 'wpavatar'); ?></option>
@@ -244,7 +322,7 @@ class Settings {
                         <tr class="cdn-option custom-cdn-option" <?php echo $cdn_type !== 'custom' ? 'style="display:none;"' : ''; ?>>
                             <th><?php _e('自定义CDN', 'wpavatar'); ?></th>
                             <td>
-                                <input type="text" name="wpavatar_custom_cdn" value="<?php echo esc_attr($custom_cdn); ?>" class="regular-text wpavatar-input">
+                                <input type="text" name="wpavatar_custom_cdn" value="<?php echo esc_attr($custom_cdn); ?>" class="regular-text wpavatar-input" <?php echo $disabled_custom_cdn; ?>>
                                 <p class="description"><?php _e('输入自定义CDN域名，例如：cdn.example.com', 'wpavatar'); ?></p>
                             </td>
                         </tr>
@@ -252,21 +330,21 @@ class Settings {
                             <th><?php _e('头像哈希方法', 'wpavatar'); ?></th>
                             <td>
                                 <label class="wpavatar-radio">
-                                    <input type="radio" name="wpavatar_hash_method" value="md5" <?php checked($hash_method, 'md5'); ?>>
+                                    <input type="radio" name="wpavatar_hash_method" value="md5" <?php checked($hash_method, 'md5'); ?> <?php echo $disabled_hash_method; ?>>
                                     <span class="wpavatar-radio-label"><?php _e('MD5 (Cravatar默认)', 'wpavatar'); ?></span>
                                 </label><br>
                                 <label class="wpavatar-radio">
-                                    <input type="radio" name="wpavatar_hash_method" value="sha256" <?php checked($hash_method, 'sha256'); ?>>
+                                    <input type="radio" name="wpavatar_hash_method" value="sha256" <?php checked($hash_method, 'sha256'); ?> <?php echo $disabled_hash_method; ?>>
                                     <span class="wpavatar-radio-label"><?php _e('SHA256 (Gravatar默认)', 'wpavatar'); ?></span>
                                 </label>
                                 <p class="description"><?php _e('选择头像邮箱的哈希方法，Cravatar目前使用MD5，一般Gravatar镜像均为SHA256', 'wpavatar'); ?></p>
-                                <p class="description hash-method-notice" style="color: #d63638; <?php echo $cdn_type !== 'cravatar_route' ? 'display:none;' : ''; ?>"><?php _e('注意：使用Cravatar服务时，哈希方法将仅使用MD5', 'wpavatar'); ?></p>
+                                <p class="description hash-method-notice" style="color: #d63638; <?php echo $cdn_type !== 'cravatar_route' ? 'display:none;' : ''; ?>"><?php _e('注意：使用Cravatar服务时，哈希方法将仅使用MD5。', 'wpavatar'); ?> <a href="https://cravatar.com/docs" target="_blank" rel="noopener noreferrer"><?php _e('进一步了解↗', 'wpavatar'); ?></a></p>
                             </td>
                         </tr>
                         <tr>
                             <th><?php _e('超时设置', 'wpavatar'); ?></th>
                             <td>
-                                <input type="number" name="wpavatar_timeout" value="<?php echo esc_attr($timeout); ?>" min="1" max="30" class="small-text wpavatar-input">
+                                <input type="number" name="wpavatar_timeout" value="<?php echo esc_attr($timeout); ?>" min="1" max="30" class="small-text wpavatar-input" <?php echo $disabled_timeout; ?>>
                                 <?php _e('秒', 'wpavatar'); ?>
                                 <p class="description"><?php _e('头像请求的最大等待时间，超过后将使用备用头像', 'wpavatar'); ?></p>
                             </td>
@@ -283,6 +361,26 @@ class Settings {
                 <h2><?php _e('缓存控制', 'wpavatar'); ?></h2>
                 <p class="wpavatar-section-desc"><?php _e('管理头像缓存设置和操作。', 'wpavatar'); ?></p>
 
+                <?php if (is_multisite() && $network_enabled): ?>
+                <div class="wpavatar-network-notice">
+                    <p>
+                        <?php if (in_array('wpavatar_enable_cache', $network_controlled_options)): ?>
+                            <span class="dashicons dashicons-lock"></span> <?php _e('启用本地缓存', 'wpavatar'); ?><br>
+                        <?php endif; ?>
+                        <?php if (in_array('wpavatar_cache_path', $network_controlled_options)): ?>
+                            <span class="dashicons dashicons-lock"></span> <?php _e('缓存目录', 'wpavatar'); ?><br>
+                        <?php endif; ?>
+                        <?php if (in_array('wpavatar_cache_expire', $network_controlled_options)): ?>
+                            <span class="dashicons dashicons-lock"></span> <?php _e('缓存过期时间', 'wpavatar'); ?><br>
+                        <?php endif; ?>
+
+                        <?php if (array_intersect(['wpavatar_enable_cache', 'wpavatar_cache_path', 'wpavatar_cache_expire'], $network_controlled_options)): ?>
+                            <em><?php _e('以上选项由网络管理员控制，您的更改将不会生效。', 'wpavatar'); ?></em>
+                        <?php endif; ?>
+                    </p>
+                </div>
+                <?php endif; ?>
+
                 <div class="wpavatar-stats-card">
                     <h3><?php _e('缓存统计', 'wpavatar'); ?></h3>
                     <div id="cache-stats" class="cache-stats-wrapper"></div>
@@ -296,16 +394,22 @@ class Settings {
                     <?php
                     settings_fields('wpavatar_cache');
 
-                    $enable_cache = get_option('wpavatar_enable_cache', 1);
-                    $cache_path = get_option('wpavatar_cache_path', WPAVATAR_CACHE_DIR);
-                    $cache_expire = get_option('wpavatar_cache_expire', 7);
+                    // Get option values using wpavatar_get_option instead of get_option
+                    $enable_cache = wpavatar_get_option('wpavatar_enable_cache', 1);
+                    $cache_path = wpavatar_get_option('wpavatar_cache_path', WPAVATAR_CACHE_DIR);
+                    $cache_expire = wpavatar_get_option('wpavatar_cache_expire', 7);
+
+                    // Determine if fields should be disabled in multisite
+                    $disabled_enable_cache = (is_multisite() && $network_enabled && in_array('wpavatar_enable_cache', $network_controlled_options)) ? 'disabled' : '';
+                    $disabled_cache_path = (is_multisite() && $network_enabled && in_array('wpavatar_cache_path', $network_controlled_options)) ? 'disabled' : '';
+                    $disabled_cache_expire = (is_multisite() && $network_enabled && in_array('wpavatar_cache_expire', $network_controlled_options)) ? 'disabled' : '';
                     ?>
                     <table class="form-table">
                         <tr>
                             <th><?php _e('启用本地缓存', 'wpavatar'); ?></th>
                             <td>
                                 <label class="wpavatar-switch">
-                                    <input type="checkbox" name="wpavatar_enable_cache" value="1" <?php checked($enable_cache); ?>>
+                                    <input type="checkbox" name="wpavatar_enable_cache" value="1" <?php checked($enable_cache); ?> <?php echo $disabled_enable_cache; ?>>
                                     <span class="wpavatar-slider"></span>
                                     <span class="wpavatar-switch-label"><?php _e('缓存头像到本地服务器', 'wpavatar'); ?></span>
                                 </label>
@@ -315,14 +419,18 @@ class Settings {
                         <tr>
                             <th><?php _e('缓存目录', 'wpavatar'); ?></th>
                             <td>
-                                <input type="text" name="wpavatar_cache_path" value="<?php echo esc_attr($cache_path); ?>" class="regular-text wpavatar-input">
+                                <input type="text" name="wpavatar_cache_path" value="<?php echo esc_attr($cache_path); ?>" class="regular-text wpavatar-input" <?php echo $disabled_cache_path; ?>>
+                                <?php if (is_multisite()): ?>
+                                <p class="description"><?php printf(__('确保目录可写，当前站点将创建子目录：%s', 'wpavatar'), trailingslashit($cache_path) . 'site-' . get_current_blog_id()); ?></p>
+                                <?php else: ?>
                                 <p class="description"><?php _e('确保目录可写，建议路径：/wp-content/uploads/cravatar', 'wpavatar'); ?></p>
+                                <?php endif; ?>
                             </td>
                         </tr>
                         <tr>
                             <th><?php _e('缓存过期时间', 'wpavatar'); ?></th>
                             <td>
-                                <input type="number" name="wpavatar_cache_expire" value="<?php echo esc_attr($cache_expire); ?>" min="1" max="30" class="small-text wpavatar-input">
+                                <input type="number" name="wpavatar_cache_expire" value="<?php echo esc_attr($cache_expire); ?>" min="1" max="30" class="small-text wpavatar-input" <?php echo $disabled_cache_expire; ?>>
                                 <?php _e('天', 'wpavatar'); ?>
                                 <p class="description"><?php _e('头像缓存的有效期，过期后将重新获取', 'wpavatar'); ?></p>
                             </td>
@@ -339,21 +447,47 @@ class Settings {
                 <h2><?php _e('高级设置', 'wpavatar'); ?></h2>
                 <p class="wpavatar-section-desc"><?php _e('配置头像的SEO和备用方案。', 'wpavatar'); ?></p>
 
+                <?php if (is_multisite() && $network_enabled): ?>
+                <div class="wpavatar-network-notice">
+                    <p>
+                        <?php if (in_array('wpavatar_seo_alt', $network_controlled_options)): ?>
+                            <span class="dashicons dashicons-lock"></span> <?php _e('SEO替代文本', 'wpavatar'); ?><br>
+                        <?php endif; ?>
+                        <?php if (in_array('wpavatar_fallback_mode', $network_controlled_options)): ?>
+                            <span class="dashicons dashicons-lock"></span> <?php _e('头像加载失败处理', 'wpavatar'); ?><br>
+                        <?php endif; ?>
+                        <?php if (in_array('wpavatar_fallback_avatar', $network_controlled_options)): ?>
+                            <span class="dashicons dashicons-lock"></span> <?php _e('备用头像选择', 'wpavatar'); ?><br>
+                        <?php endif; ?>
+
+                        <?php if (array_intersect(['wpavatar_seo_alt', 'wpavatar_fallback_mode', 'wpavatar_fallback_avatar'], $network_controlled_options)): ?>
+                            <em><?php _e('以上选项由网络管理员控制，您的更改将不会生效。', 'wpavatar'); ?></em>
+                        <?php endif; ?>
+                    </p>
+                </div>
+                <?php endif; ?>
+
                 <form method="post" action="options.php" id="wpavatar-advanced-form">
                     <?php
                     settings_fields('wpavatar_advanced');
 
-                    $seo_alt = get_option('wpavatar_seo_alt', '%s的头像');
-                    $fallback_mode = get_option('wpavatar_fallback_mode', 1);
-                    $fallback_avatar = get_option('wpavatar_fallback_avatar', 'default');
+                    // Get option values using wpavatar_get_option instead of get_option
+                    $seo_alt = wpavatar_get_option('wpavatar_seo_alt', '%s的头像');
+                    $fallback_mode = wpavatar_get_option('wpavatar_fallback_mode', 1);
+                    $fallback_avatar = wpavatar_get_option('wpavatar_fallback_avatar', 'default');
 
                     $local_avatars = \WPAvatar\Cravatar::get_local_avatars();
+
+                    // Determine if fields should be disabled in multisite
+                    $disabled_seo_alt = (is_multisite() && $network_enabled && in_array('wpavatar_seo_alt', $network_controlled_options)) ? 'disabled' : '';
+                    $disabled_fallback_mode = (is_multisite() && $network_enabled && in_array('wpavatar_fallback_mode', $network_controlled_options)) ? 'disabled' : '';
+                    $disabled_fallback_avatar = (is_multisite() && $network_enabled && in_array('wpavatar_fallback_avatar', $network_controlled_options)) ? 'disabled' : '';
                     ?>
                     <table class="form-table">
                         <tr>
                             <th><?php _e('SEO替代文本', 'wpavatar'); ?></th>
                             <td>
-                                <input type="text" name="wpavatar_seo_alt" value="<?php echo esc_attr($seo_alt); ?>" class="regular-text wpavatar-input">
+                                <input type="text" name="wpavatar_seo_alt" value="<?php echo esc_attr($seo_alt); ?>" class="regular-text wpavatar-input" <?php echo $disabled_seo_alt; ?>>
                                 <p class="description"><?php _e('头像的ALT文本，%s将被替换为用户名', 'wpavatar'); ?></p>
                             </td>
                         </tr>
@@ -361,7 +495,7 @@ class Settings {
                             <th><?php _e('头像加载失败处理', 'wpavatar'); ?></th>
                             <td>
                                 <label class="wpavatar-switch">
-                                    <input type="checkbox" name="wpavatar_fallback_mode" value="1" <?php checked($fallback_mode); ?>>
+                                    <input type="checkbox" name="wpavatar_fallback_mode" value="1" <?php checked($fallback_mode); ?> <?php echo $disabled_fallback_mode; ?>>
                                     <span class="wpavatar-slider"></span>
                                     <span class="wpavatar-switch-label"><?php _e('启用备用头像', 'wpavatar'); ?></span>
                                 </label>
@@ -374,7 +508,7 @@ class Settings {
                                 <div class="default-avatar-options">
                                     <?php foreach ($local_avatars as $key => $avatar) : ?>
                                     <label>
-                                        <input type="radio" name="wpavatar_fallback_avatar" value="<?php echo esc_attr($key); ?>" <?php checked($fallback_avatar, $key); ?>>
+                                        <input type="radio" name="wpavatar_fallback_avatar" value="<?php echo esc_attr($key); ?>" <?php checked($fallback_avatar, $key); ?> <?php echo $disabled_fallback_avatar; ?>>
                                         <img src="<?php echo esc_url($avatar['url']); ?>" alt="<?php echo esc_attr($avatar['name']); ?>" width="48" height="48">
                                         <span class="avatar-option-name"><?php echo esc_html($avatar['name']); ?></span>
                                     </label>
@@ -388,7 +522,7 @@ class Settings {
                                         : 'https://wpcy.com';
 
                                     printf(
-                                        __('选择您喜欢的故障备用头像，如需智能线路切换，请使用%s。', 'wpavatar'),
+                                        __('选择您的故障备用头像，如需智能线路切换，请使用%s。', 'wpavatar'),
                                         sprintf(
                                             '<a href="%s" target="_blank" rel="noopener noreferrer">%s</a>',
                                             esc_url($wpcy_link),
@@ -397,7 +531,7 @@ class Settings {
                                     );
                                     ?>
                                 </p>
-                                                          </td>
+                            </td>
                         </tr>
                     </table>
                     <div class="wpavatar-submit-wrapper">
@@ -407,11 +541,30 @@ class Settings {
                 </form>
             </div>
 
-
             <div class="wpavatar-section" id="wpavatar-section-shortcodes" style="<?php echo $active_tab !== 'shortcodes' ? 'display: none;' : ''; ?>">
                 <h2><?php _e('简码设置', 'wpavatar'); ?></h2>
                 <p class="wpavatar-section-desc"><?php _e('配置头像简码的默认参数和预览效果。', 'wpavatar'); ?></p>
 
+                <?php if (is_multisite() && $network_enabled): ?>
+                <div class="wpavatar-network-notice">
+                    <p>
+                        <?php if (in_array('wpavatar_shortcode_size', $network_controlled_options)): ?>
+                            <span class="dashicons dashicons-lock"></span> <?php _e('默认头像大小', 'wpavatar'); ?><br>
+                        <?php endif; ?>
+                        <?php if (in_array('wpavatar_shortcode_class', $network_controlled_options)): ?>
+                            <span class="dashicons dashicons-lock"></span> <?php _e('默认CSS类名', 'wpavatar'); ?><br>
+                        <?php endif; ?>
+                        <?php if (in_array('wpavatar_shortcode_shape', $network_controlled_options)): ?>
+                            <span class="dashicons dashicons-lock"></span> <?php _e('默认头像形状', 'wpavatar'); ?><br>
+                        <?php endif; ?>
+
+                        <?php if (array_intersect(['wpavatar_shortcode_size', 'wpavatar_shortcode_class', 'wpavatar_shortcode_shape'], $network_controlled_options)): ?>
+                            <em><?php _e('以上选项由网络管理员控制，您的更改将不会生效。', 'wpavatar'); ?></em>
+                        <?php endif; ?>
+                    </p>
+                </div>
+                <?php endif; ?>
+
                 <div class="wpavatar-preview-container">
                     <h3><?php _e('头像预览', 'wpavatar'); ?></h3>
                     <div class="wpavatar-preview-wrapper">
@@ -447,29 +600,35 @@ class Settings {
                     <?php
                     settings_fields('wpavatar_shortcodes');
 
-                    $shortcode_size = get_option('wpavatar_shortcode_size', 96);
-                    $shortcode_class = get_option('wpavatar_shortcode_class', 'wpavatar');
-                    $shortcode_shape = get_option('wpavatar_shortcode_shape', 'square');
+                    // Get option values using wpavatar_get_option instead of get_option
+                    $shortcode_size = wpavatar_get_option('wpavatar_shortcode_size', 96);
+                    $shortcode_class = wpavatar_get_option('wpavatar_shortcode_class', 'wpavatar');
+                    $shortcode_shape = wpavatar_get_option('wpavatar_shortcode_shape', 'square');
+
+                    // Determine if fields should be disabled in multisite
+                    $disabled_shortcode_size = (is_multisite() && $network_enabled && in_array('wpavatar_shortcode_size', $network_controlled_options)) ? 'disabled' : '';
+                    $disabled_shortcode_class = (is_multisite() && $network_enabled && in_array('wpavatar_shortcode_class', $network_controlled_options)) ? 'disabled' : '';
+                    $disabled_shortcode_shape = (is_multisite() && $network_enabled && in_array('wpavatar_shortcode_shape', $network_controlled_options)) ? 'disabled' : '';
                     ?>
                     <table class="form-table">
                         <tr>
                             <th><?php _e('默认头像大小', 'wpavatar'); ?></th>
                             <td>
-                                <input type="number" name="wpavatar_shortcode_size" value="<?php echo esc_attr($shortcode_size); ?>" min="16" max="512" class="small-text wpavatar-input">
+                                <input type="number" name="wpavatar_shortcode_size" value="<?php echo esc_attr($shortcode_size); ?>" min="16" max="512" class="small-text wpavatar-input" <?php echo $disabled_shortcode_size; ?>>
                                 <p class="description"><?php _e('简码默认头像大小（像素）', 'wpavatar'); ?></p>
                             </td>
                         </tr>
                         <tr>
                             <th><?php _e('默认CSS类名', 'wpavatar'); ?></th>
                             <td>
-                                <input type="text" name="wpavatar_shortcode_class" value="<?php echo esc_attr($shortcode_class); ?>" class="regular-text wpavatar-input">
+                                <input type="text" name="wpavatar_shortcode_class" value="<?php echo esc_attr($shortcode_class); ?>" class="regular-text wpavatar-input" <?php echo $disabled_shortcode_class; ?>>
                                 <p class="description"><?php _e('简码生成的头像默认CSS类', 'wpavatar'); ?></p>
                             </td>
                         </tr>
                         <tr>
                             <th><?php _e('默认头像形状', 'wpavatar'); ?></th>
                             <td>
-                                <select name="wpavatar_shortcode_shape" class="wpavatar-select">
+                                <select name="wpavatar_shortcode_shape" class="wpavatar-select" <?php echo $disabled_shortcode_shape; ?>>
                                     <option value="square" <?php selected($shortcode_shape, 'square'); ?>><?php _e('方形', 'wpavatar'); ?></option>
                                     <option value="rounded" <?php selected($shortcode_shape, 'rounded'); ?>><?php _e('圆角方形', 'wpavatar'); ?></option>
                                     <option value="circle" <?php selected($shortcode_shape, 'circle'); ?>><?php _e('圆形', 'wpavatar'); ?></option>
@@ -603,106 +762,23 @@ class Settings {
             font-size: 12px;
             line-height: 1.3;
         }
+
+        .wpavatar-network-notice {
+            margin: 0 0 20px;
+            padding: 10px 12px;
+            background: #f0f6fc;
+            border-left: 4px solid #72aee6;
+        }
+        .wpavatar-network-notice .dashicons-lock {
+            color: #72aee6;
+            margin-right: 5px;
+        }
+        .wpavatar-network-notice em {
+            display: block;
+            margin-top: 5px;
+            color: #666;
+        }
         </style>
         <?php
     }
 }
-
-class Network {
-    public static function init() {
-        if (is_network_admin()) {
-            add_action('network_admin_menu', [__CLASS__, 'add_network_menu']);
-            add_action('network_admin_edit_wpavatar_network', [__CLASS__, 'save_network_settings']);
-        }
-    }
-
-    public static function add_network_menu() {
-        add_submenu_page(
-            'settings.php',
-            __('WPAvatar网络设置', 'wpavatar'),
-            __('WPAvatar', 'wpavatar'),
-            'manage_network_options',
-            'wpavatar-network',
-            [__CLASS__, 'render_network_page']
-        );
-    }
-
-    public static function render_network_page() {
-        ?>
-        <div class="wrap wpavatar-settings">
-            <h1><?php esc_html_e('WPAvatar网络设置', 'wpavatar'); ?></h1>
-
-            <div id="wpavatar-network-status" class="notice" style="display:none; margin-top: 10px;"></div>
-
-            <div class="wpavatar-card">
-                <h2><?php _e('网络范围设置', 'wpavatar'); ?></h2>
-                <p class="wpavatar-section-desc"><?php _e('配置多站点网络的WPAvatar设置。', 'wpavatar'); ?></p>
-
-                <form method="post" action="edit.php?action=wpavatar_network" id="wpavatar-network-form">
-                    <?php wp_nonce_field('wpavatar_network_settings'); ?>
-                    <table class="form-table">
-                        <tr>
-                            <th><?php _e('启用网络范围设置', 'wpavatar'); ?></th>
-                            <td>
-                                <label class="wpavatar-switch">
-                                    <input type="checkbox" name="wpavatar_network_enabled" value="1" <?php checked(get_site_option('wpavatar_network_enabled', 1)); ?>>
-                                    <span class="wpavatar-slider"></span>
-                                    <span class="wpavatar-switch-label"><?php _e('在所有站点启用WPAvatar', 'wpavatar'); ?></span>
-                                </label>
-                                <p class="description"><?php _e('启用后，WPAvatar将在网络中的所有站点上生效', 'wpavatar'); ?></p>
-                            </td>
-                        </tr>
-                        <tr>
-                            <th><?php _e('默认CDN类型', 'wpavatar'); ?></th>
-                            <td>
-                                <select name="wpavatar_network_cdn_type" class="wpavatar-select">
-                                    <option value="cravatar_route" <?php selected(get_site_option('wpavatar_network_cdn_type', 'cravatar_route'), 'cravatar_route'); ?>><?php _e('Cravatar线路', 'wpavatar'); ?></option>
-                                    <option value="third_party" <?php selected(get_site_option('wpavatar_network_cdn_type', 'cravatar_route'), 'third_party'); ?>><?php _e('第三方镜像', 'wpavatar'); ?></option>
-                                    <option value="custom" <?php selected(get_site_option('wpavatar_network_cdn_type', 'cravatar_route'), 'custom'); ?>><?php _e('自定义CDN', 'wpavatar'); ?></option>
-                                </select>
-                            </td>
-                        </tr>
-                        <tr>
-                            <th><?php _e('默认Cravatar线路', 'wpavatar'); ?></th>
-                            <td>
-                                <select name="wpavatar_network_cravatar_route" class="wpavatar-select">
-                                    <option value="cravatar.com" <?php selected(get_site_option('wpavatar_network_cravatar_route', 'cravatar.com'), 'cravatar.com'); ?>><?php _e('默认线路 (cravatar.com)', 'wpavatar'); ?></option>
-                                    <option value="cn.cravatar.com" <?php selected(get_site_option('wpavatar_network_cravatar_route', 'cravatar.com'), 'cn.cravatar.com'); ?>><?php _e('中国大陆 (cn.cravatar.com)', 'wpavatar'); ?></option>
-                                    <option value="hk.cravatar.com" <?php selected(get_site_option('wpavatar_network_cravatar_route', 'cravatar.com'), 'hk.cravatar.com'); ?>><?php _e('香港 (hk.cravatar.com)', 'wpavatar'); ?></option>
-                                    <option value="en.cravatar.com" <?php selected(get_site_option('wpavatar_network_cravatar_route', 'cravatar.com'), 'en.cravatar.com'); ?>><?php _e('国际 (en.cravatar.com)', 'wpavatar'); ?></option>
-                                </select>
-                            </td>
-                        </tr>
-                        <tr>
-                            <th><?php _e('哈希方法', 'wpavatar'); ?></th>
-                            <td>
-                                <p class="description" style="color: #d63638;"><?php _e('注意：使用Cravatar服务时，哈希方法将强制使用MD5', 'wpavatar'); ?></p>
-                            </td>
-                        </tr>
-                    </table>
-                    <div class="wpavatar-submit-wrapper">
-                        <button type="submit" class="button button-primary"><?php _e('保存设置', 'wpavatar'); ?></button>
-                    </div>
-                </form>
-            </div>
-        </div>
-        <?php
-    }
-
-    public static function save_network_settings() {
-        check_admin_referer('wpavatar_network_settings');
-
-        update_site_option('wpavatar_network_enabled', isset($_POST['wpavatar_network_enabled']) ? 1 : 0);
-
-        if (isset($_POST['wpavatar_network_cdn_type'])) {
-            update_site_option('wpavatar_network_cdn_type', sanitize_text_field($_POST['wpavatar_network_cdn_type']));
-        }
-
-        if (isset($_POST['wpavatar_network_cravatar_route'])) {
-            update_site_option('wpavatar_network_cravatar_route', sanitize_text_field($_POST['wpavatar_network_cravatar_route']));
-        }
-
-        wp_redirect(add_query_arg(['page' => 'wpavatar-network', 'updated' => 'true'], network_admin_url('settings.php')));
-        exit;
-    }
-}
diff --git a/includes/compatibility.php b/includes/compatibility.php
new file mode 100644
index 0000000..5f10247
--- /dev/null
+++ b/includes/compatibility.php
@@ -0,0 +1,106 @@
+<?php
+/**
+ * WPAvatar 兼容性修复
+ *
+ * 用于处理与 WP-China-Yes 插件的兼容性问题
+ */
+
+namespace WPAvatar;
+
+class Compatibility {
+    /**
+     * 初始化兼容性修复
+     */
+    public static function init() {
+        // 在所有插件加载后、主题初始化前运行
+        add_action('after_setup_theme', [__CLASS__, 'handle_wp_china_yes_compatibility'], 5);
+    }
+
+    /**
+     * 处理与 WP-China-Yes 插件的兼容性
+     */
+    public static function handle_wp_china_yes_compatibility() {
+        // 检查 WP-China-Yes 插件是否激活
+        if (self::is_wp_china_yes_active()) {
+            // 移除 WP-China-Yes 的头像替换过滤器
+            self::remove_wp_china_yes_filters();
+
+            // 重新初始化 WPAvatar 的 Cravatar 功能，使用更高的优先级
+            self::reinitialize_wpavatar_filters();
+
+            // 可选：添加管理界面通知
+            if (is_admin()) {
+                add_action('admin_notices', [__CLASS__, 'admin_compatibility_notice']);
+            }
+        }
+    }
+
+    /**
+     * 检查 WP-China-Yes 插件是否激活
+     */
+    private static function is_wp_china_yes_active() {
+        return class_exists('WenPai\\ChinaYes\\Service\\Super') ||
+               defined('CHINA_YES_VERSION') ||
+               function_exists('WenPai\\ChinaYes\\get_settings');
+    }
+
+    /**
+     * 移除 WP-China-Yes 的头像替换过滤器
+     */
+    private static function remove_wp_china_yes_filters() {
+        // 找到可能的 Super 类实例
+        global $wp_filter;
+
+        $filters_to_check = [
+            'get_avatar_url',
+            'um_user_avatar_url_filter',
+            'bp_gravatar_url',
+            'user_profile_picture_description',
+            'avatar_defaults'
+        ];
+
+        foreach ($filters_to_check as $filter_name) {
+            if (isset($wp_filter[$filter_name])) {
+                foreach ($wp_filter[$filter_name]->callbacks as $priority => $callbacks) {
+                    foreach ($callbacks as $callback_key => $callback_data) {
+                        if (is_array($callback_data['function']) &&
+                            is_object($callback_data['function'][0]) &&
+                            get_class($callback_data['function'][0]) === 'WenPai\\ChinaYes\\Service\\Super') {
+
+                            $method_name = $callback_data['function'][1];
+                            remove_filter($filter_name, [$callback_data['function'][0], $method_name], $priority);
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * 重新初始化 WPAvatar 的 Cravatar 过滤器，使用更高的优先级
+     */
+    private static function reinitialize_wpavatar_filters() {
+        if (wpavatar_get_option('wpavatar_enable_cravatar', true)) {
+            // 使用高优先级再次添加过滤器
+            add_filter('um_user_avatar_url_filter', ['\WPAvatar\Cravatar', 'replace_avatar_url'], 9999);
+            add_filter('bp_gravatar_url', ['\WPAvatar\Cravatar', 'replace_avatar_url'], 9999);
+            add_filter('user_profile_picture_description', ['\WPAvatar\Cravatar', 'modify_profile_picture_description'], 9999);
+
+            // 确保 get_avatar_url 过滤器的优先级高于其他插件
+            remove_filter('get_avatar_url', ['\WPAvatar\Cravatar', 'get_avatar_url'], 999);
+            add_filter('get_avatar_url', ['\WPAvatar\Cravatar', 'get_avatar_url'], 9999, 2);
+        }
+    }
+
+    /**
+     * 管理界面兼容性通知
+     */
+    public static function admin_compatibility_notice() {
+        $screen = get_current_screen();
+        if ($screen && $screen->id === 'settings_page_wpavatar-settings') {
+            echo '<div class="notice notice-info is-dismissible">';
+            echo '<p>检测到文派叶子（WPCY.COM）插件，WPAvatar 生态组件兼容性补丁已生效，确保文派头像设置优先。</p>';
+            echo '</div>';
+        }
+    }
+}
diff --git a/includes/core.php b/includes/core.php
index a71b5dd..3a949e2 100644
--- a/includes/core.php
+++ b/includes/core.php
@@ -19,12 +19,17 @@ class Cravatar {
     ];
 
     public static function init() {
-        if (get_option('wpavatar_enable_cravatar', true)) {
-            add_filter('get_avatar_url', [__CLASS__, 'replace_avatar_url'], 1);
+        if (wpavatar_get_option('wpavatar_enable_cravatar', true)) {
+            // 使用高优先级过滤器来预处理头像数据
+            add_filter('pre_get_avatar_data', [__CLASS__, 'pre_get_avatar_data'], 1, 2);
+
+            // 直接过滤avatar_url，无论是否已经通过pre_get_avatar_data处理
+            add_filter('get_avatar_url', [__CLASS__, 'get_avatar_url'], 999, 2);
+
+            // 其他过滤器
             add_filter('um_user_avatar_url_filter', [__CLASS__, 'replace_avatar_url'], 1);
             add_filter('bp_gravatar_url', [__CLASS__, 'replace_avatar_url'], 1);
             add_filter('user_profile_picture_description', [__CLASS__, 'modify_profile_picture_description'], 1);
-            add_filter('pre_get_avatar_data', [__CLASS__, 'pre_get_avatar_data'], 9, 2);
             add_filter('get_avatar', [__CLASS__, 'add_seo_alt'], 10, 5);
         }
     }
@@ -74,12 +79,144 @@ class Cravatar {
         return '<a href="https://cravatar.com" target="_blank" rel="noopener">' . __('您可以在初认头像修改您的资料图片', 'wpavatar') . '</a>';
     }
 
+    /**
+     * 预处理头像数据，根据配置决定是否强制使用MD5
+     */
     public static function pre_get_avatar_data($args, $id_or_email) {
         if (is_null($args)) {
             $args = [];
         }
 
+        $email = self::get_email_from_id_or_email($id_or_email);
+
+        if (empty($email)) {
+            return $args;
+        }
+
+        // 检查是否为 Cravatar 线路，只有 Cravatar 线路才强制使用 MD5
+        $cdn_type = wpavatar_get_option('wpavatar_cdn_type', 'cravatar_route');
+        if ($cdn_type === 'cravatar_route') {
+            // Cravatar 线路强制使用 MD5
+            $args['hash_method'] = 'md5';
+
+            // 移除SHA256散列标记（如果存在）
+            if (isset($args['hash']) && $args['hash'] === 'sha256') {
+                unset($args['hash']);
+            }
+        } else {
+            // 尊重用户选择的哈希方法
+            $hash_method = wpavatar_get_option('wpavatar_hash_method', 'md5');
+            $args['hash_method'] = $hash_method;
+        }
+
+        // 确保我们有email_hash供后续使用，根据选择的哈希方法计算
+        if ($args['hash_method'] === 'sha256' && function_exists('hash')) {
+            $args['wpavatar_email_hash'] = hash('sha256', strtolower(trim($email)));
+        } else {
+            $args['wpavatar_email_hash'] = md5(strtolower(trim($email)));
+        }
+
+        // 添加超时属性
+        $timeout = wpavatar_get_option('wpavatar_timeout', 5);
+        $args['extra_attr'] = isset($args['extra_attr']) ? $args['extra_attr'] : '';
+        $args['extra_attr'] .= ' data-timeout="' . esc_attr($timeout) . '"';
+
+        return $args;
+    }
+
+    /**
+     * 直接替换头像URL，根据配置决定是否强制使用Cravatar和MD5哈希
+     */
+    public static function get_avatar_url($url, $id_or_email) {
+        // 如果地址已经是我们支持的域名，则直接返回
+        $cdn_type = wpavatar_get_option('wpavatar_cdn_type', 'cravatar_route');
+        $cdn_domain = '';
+
+        if ($cdn_type === 'cravatar_route') {
+            $cdn_domain = wpavatar_get_option('wpavatar_cravatar_route', 'cravatar.com');
+        } elseif ($cdn_type === 'third_party') {
+            $cdn_domain = wpavatar_get_option('wpavatar_third_party_mirror', 'weavatar.com');
+        } elseif ($cdn_type === 'custom') {
+            $cdn_domain = wpavatar_get_option('wpavatar_custom_cdn', '');
+            if (empty($cdn_domain)) {
+                $cdn_domain = 'cravatar.com';
+            }
+        }
+
+        // 检查URL是否已经使用了支持的域名
+        if (strpos($url, $cdn_domain) !== false) {
+            return $url;
+        }
+
+        // 获取用户设置的哈希方法
+        $hash_method = wpavatar_get_option('wpavatar_hash_method', 'md5');
+
+        // 仅当使用Cravatar线路或者自定义CDN包含"cravatar"时，强制使用MD5
+        $force_md5 = ($cdn_type === 'cravatar_route' ||
+                     ($cdn_type === 'custom' && strpos(strtolower($cdn_domain), 'cravatar') !== false));
+
+        if ($force_md5) {
+            // 对于Cravatar，删除hash=sha256参数
+            $url = str_replace(['?hash=sha256', '&hash=sha256'], ['', ''], $url);
+        }
+
+        // 从URL提取邮箱哈希
+        $hash = '';
+
+        // 根据URL中是否包含SHA256或MD5哈希进行处理
+        if (preg_match('/\/avatar\/([a-f0-9]{64})/', $url, $matches)) {
+            // SHA256哈希
+            if ($force_md5) {
+                // 如果强制使用MD5，需要重新计算哈希
+                $email = self::get_email_from_id_or_email($id_or_email);
+                if (!empty($email)) {
+                    $hash = md5(strtolower(trim($email)));
+                } else {
+                    // 如果无法获取邮箱，则使用默认头像
+                    return self::replace_avatar_url($url);
+                }
+            } else {
+                // 尊重SHA256
+                $hash = $matches[1];
+            }
+        } elseif (preg_match('/\/avatar\/([a-f0-9]{32})/', $url, $matches)) {
+            // MD5哈希
+            $hash = $matches[1];
+        }
+
+        if (empty($hash)) {
+            return self::replace_avatar_url($url);
+        }
+
+        // 构建新的头像URL
+        $new_url = 'https://' . $cdn_domain . '/avatar/' . $hash;
+
+        // 保留原始URL中的参数
+        $query_params = [];
+        $parsed_url = parse_url($url);
+        if (isset($parsed_url['query'])) {
+            parse_str($parsed_url['query'], $query_params);
+        }
+
+        // 如果使用SHA256并且不是强制使用MD5的情况，添加哈希参数
+        if ($hash_method === 'sha256' && !$force_md5 && strlen($hash) === 64) {
+            $query_params['hash'] = 'sha256';
+        }
+
+        // 构建完整URL
+        if (!empty($query_params)) {
+            $new_url .= '?' . http_build_query($query_params);
+        }
+
+        return $new_url;
+    }
+
+    /**
+     * 从ID或邮箱获取邮箱地址
+     */
+    public static function get_email_from_id_or_email($id_or_email) {
         $email = '';
+
         if (is_numeric($id_or_email)) {
             $user = get_user_by('id', (int)$id_or_email);
             if ($user) {
@@ -90,89 +227,58 @@ class Cravatar {
                 $email = $id_or_email;
             }
         } elseif (is_object($id_or_email)) {
-            if (isset($id_or_email->user_id) && $id_or_email->user_id) {
-                $user = get_user_by('id', $id_or_email->user_id);
+            if ($id_or_email instanceof \WP_User) {
+                $email = $id_or_email->user_email;
+            } elseif ($id_or_email instanceof \WP_Post) {
+                $user = get_user_by('id', (int)$id_or_email->post_author);
                 if ($user) {
                     $email = $user->user_email;
                 }
-            } elseif (isset($id_or_email->comment_author_email)) {
-                $email = $id_or_email->comment_author_email;
-            } elseif (isset($id_or_email->user_email)) {
-                $email = $id_or_email->user_email;
+            } elseif ($id_or_email instanceof \WP_Comment) {
+                if (!empty($id_or_email->user_id)) {
+                    $user = get_user_by('id', (int)$id_or_email->user_id);
+                    if ($user) {
+                        $email = $user->user_email;
+                    }
+                } elseif (!empty($id_or_email->comment_author_email)) {
+                    $email = $id_or_email->comment_author_email;
+                }
+            } elseif (isset($id_or_email->comment_ID)) {
+                $comment = get_comment($id_or_email->comment_ID);
+                if ($comment) {
+                    if ($comment->user_id) {
+                        $user = get_user_by('id', (int)$comment->user_id);
+                        if ($user) {
+                            $email = $user->user_email;
+                        }
+                    } else {
+                        $email = $comment->comment_author_email;
+                    }
+                }
             }
         }
 
-        if (empty($email)) {
-            return $args;
-        }
-
-        // 确定使用的哈希方法
-        $cdn_type = get_option('wpavatar_cdn_type', 'cravatar_route');
-        $use_md5 = true;
-
-        // Cravatar只支持MD5，如果使用Cravatar相关服务，强制使用MD5
-        if ($cdn_type !== 'cravatar_route') {
-            // 检查第三方镜像或自定义CDN是否与Cravatar相关
-            $third_party_mirror = get_option('wpavatar_third_party_mirror', '');
-            $custom_cdn = get_option('wpavatar_custom_cdn', '');
-            $is_cravatar_related = (
-                strpos(strtolower($third_party_mirror), 'cravatar') !== false ||
-                strpos(strtolower($custom_cdn), 'cravatar') !== false
-            );
-
-            if (!$is_cravatar_related) {
-                // 非Cravatar服务使用用户设置的哈希方法
-                $hash_method = get_option('wpavatar_hash_method', 'sha256');
-                $use_md5 = ($hash_method === 'md5');
-            }
-        }
-
-        // 检查WordPress版本，决定是否支持SHA256
-        $wp_version = get_bloginfo('version');
-        $use_sha256_support = version_compare($wp_version, '6.8', '>=');
-
-        // 设置哈希方法
-        if (!$use_md5 && $use_sha256_support) {
-            $args['hash_method'] = 'sha256';
-            $args['hash'] = 'sha256';
-        } else {
-            $args['hash_method'] = 'md5';
-
-            if (isset($args['hash']) && $args['hash'] === 'sha256') {
-                unset($args['hash']);
-            }
-        }
-
-        // 计算邮箱地址的哈希值
-        if (!isset($args['wpavatar_email_hash'])) {
-            if (!$use_md5) {
-                $args['wpavatar_email_hash'] = hash('sha256', strtolower(trim($email)));
-            } else {
-                $args['wpavatar_email_hash'] = md5(strtolower(trim($email)));
-            }
-        }
-
-        // 设置超时属性
-        $timeout = get_option('wpavatar_timeout', 5);
-        $args['extra_attr'] = isset($args['extra_attr']) ? $args['extra_attr'] : '';
-        $args['extra_attr'] .= ' data-timeout="' . esc_attr($timeout) . '"';
-
-        return $args;
+        return $email;
     }
-    
+
     public static function replace_avatar_url($url) {
-        // 遍历所有Gravatar域名，替换为Cravatar相关域名
+        // 移除hash=sha256参数，因为Cravatar不支持
+        if (strpos($url, 'hash=sha256') !== false) {
+            $url = str_replace(['?hash=sha256', '&hash=sha256'], ['', ''], $url);
+        }
+
+        // 更换Gravatar域名为Cravatar域名
         foreach (self::$gravatar_domains as $domain) {
             if (strpos($url, $domain) !== false) {
-                $cdn_type = get_option('wpavatar_cdn_type', 'cravatar_route');
+                $cdn_type = wpavatar_get_option('wpavatar_cdn_type', 'cravatar_route');
                 $cdn_domain = '';
 
                 if ($cdn_type === 'cravatar_route') {
-                    $cdn_domain = get_option('wpavatar_cravatar_route', 'cravatar.com');
+                    $cdn_domain = wpavatar_get_option('wpavatar_cravatar_route', 'cravatar.com');
                 } elseif ($cdn_type === 'third_party') {
-                    $cdn_domain = get_option('wpavatar_third_party_mirror', 'weavatar.com');
+                    $cdn_domain = wpavatar_get_option('wpavatar_third_party_mirror', 'weavatar.com');
                 } elseif ($cdn_type === 'custom') {
-                    $custom_cdn = get_option('wpavatar_custom_cdn', '');
+                    $custom_cdn = wpavatar_get_option('wpavatar_custom_cdn', '');
                     if (!empty($custom_cdn)) {
                         $cdn_domain = $custom_cdn;
                     } else {
@@ -189,7 +295,7 @@ class Cravatar {
 
     public static function add_seo_alt($avatar, $id_or_email, $size, $default, $alt) {
         // 添加SEO友好的alt属性
-        $seo_alt = get_option('wpavatar_seo_alt');
+        $seo_alt = wpavatar_get_option('wpavatar_seo_alt');
         if (!empty($seo_alt)) {
             $user = false;
             if (is_numeric($id_or_email)) {
@@ -211,8 +317,8 @@ class Cravatar {
         }
 
         // 添加头像加载失败的备用显示
-        if (get_option('wpavatar_fallback_mode', 1)) {
-            $fallback_type = get_option('wpavatar_fallback_avatar', 'default');
+        if (wpavatar_get_option('wpavatar_fallback_mode', 1)) {
+            $fallback_type = wpavatar_get_option('wpavatar_fallback_avatar', 'default');
             $local_avatars = self::get_local_avatars();
 
             if (isset($local_avatars[$fallback_type])) {
@@ -233,7 +339,7 @@ class Cache {
         add_action('init', [__CLASS__, 'setup_cache_dir']);
         add_action('init', [__CLASS__, 'schedule_purge']);
 
-        if (get_option('wpavatar_enable_cache', true)) {
+        if (wpavatar_get_option('wpavatar_enable_cache', true)) {
             add_filter('get_avatar_url', [__CLASS__, 'prepare_cache_url'], 99, 2);
             add_filter('get_avatar', [__CLASS__, 'serve_cached_avatar'], 20, 5);
         }
@@ -245,12 +351,11 @@ class Cache {
     }
 
     public static function setup_cache_dir() {
-        $dir = get_option('wpavatar_cache_path', WPAVATAR_CACHE_DIR);
+        $base_dir = wpavatar_get_option('wpavatar_cache_path', WPAVATAR_CACHE_DIR);
+        $base_dir = rtrim($base_dir, '/\\') . '/';
 
-        $dir = rtrim($dir, '/\\') . '/';
-
-        if (!file_exists($dir)) {
-            if (!wp_mkdir_p($dir)) {
+        if (!file_exists($base_dir)) {
+            if (!wp_mkdir_p($base_dir)) {
                 add_settings_error(
                     'wpavatar_cache',
                     'cache_dir_error',
@@ -261,7 +366,7 @@ class Cache {
             }
         }
 
-        if (!is_writable($dir)) {
+        if (!is_writable($base_dir)) {
             add_settings_error(
                 'wpavatar_cache',
                 'cache_dir_writable',
@@ -271,12 +376,14 @@ class Cache {
             return false;
         }
 
-        $index_file = $dir . 'index.php';
+        // Create index.php in base dir
+        $index_file = $base_dir . 'index.php';
         if (!file_exists($index_file)) {
             @file_put_contents($index_file, '<?php // Silence is golden.');
         }
 
-        $htaccess_file = $dir . '.htaccess';
+        // Create .htaccess in base dir
+        $htaccess_file = $base_dir . '.htaccess';
         if (!file_exists($htaccess_file)) {
             $htaccess_content = "# Prevent directory listing\n";
             $htaccess_content .= "Options -Indexes\n";
@@ -288,11 +395,45 @@ class Cache {
             @file_put_contents($htaccess_file, $htaccess_content);
         }
 
+        // If multisite, create site-specific directory
+        if (is_multisite()) {
+            $blog_id = get_current_blog_id();
+            $site_dir = $base_dir . 'site-' . $blog_id . '/';
+
+            if (!file_exists($site_dir)) {
+                if (!wp_mkdir_p($site_dir)) {
+                    add_settings_error(
+                        'wpavatar_cache',
+                        'cache_dir_error',
+                        __('无法创建站点缓存目录，请检查权限', 'wpavatar'),
+                        'error'
+                    );
+                    return false;
+                }
+            }
+
+            if (!is_writable($site_dir)) {
+                add_settings_error(
+                    'wpavatar_cache',
+                    'cache_dir_writable',
+                    __('站点缓存目录不可写，请检查权限', 'wpavatar'),
+                    'error'
+                );
+                return false;
+            }
+
+            // Create index.php in site dir
+            $site_index_file = $site_dir . 'index.php';
+            if (!file_exists($site_index_file)) {
+                @file_put_contents($site_index_file, '<?php // Silence is golden.');
+            }
+        }
+
         return true;
     }
 
     public static function prepare_cache_url($url, $id_or_email) {
-        if (!get_option('wpavatar_enable_cache', true)) {
+        if (!wpavatar_get_option('wpavatar_enable_cache', true)) {
             return $url;
         }
 
@@ -307,7 +448,7 @@ class Cache {
     }
 
     public static function serve_cached_avatar($avatar, $id_or_email, $size, $default, $alt) {
-        if (!get_option('wpavatar_enable_cache', true)) {
+        if (!wpavatar_get_option('wpavatar_enable_cache', true)) {
             return $avatar;
         }
 
@@ -320,25 +461,24 @@ class Cache {
 
         $is_avatar_url = false;
 
-        $cdn_type = get_option('wpavatar_cdn_type', 'cravatar_route');
+        $cdn_type = wpavatar_get_option('wpavatar_cdn_type', 'cravatar_route');
         if ($cdn_type === 'cravatar_route') {
-            $cdn_domain = get_option('wpavatar_cravatar_route', 'cravatar.com');
+            $cdn_domain = wpavatar_get_option('wpavatar_cravatar_route', 'cravatar.com');
             if (strpos($url, $cdn_domain) !== false) {
                 $is_avatar_url = true;
             }
         } elseif ($cdn_type === 'third_party') {
-            $cdn_domain = get_option('wpavatar_third_party_mirror', 'weavatar.com');
+            $cdn_domain = wpavatar_get_option('wpavatar_third_party_mirror', 'weavatar.com');
             if (strpos($url, $cdn_domain) !== false) {
                 $is_avatar_url = true;
             }
         } elseif ($cdn_type === 'custom') {
-            $cdn_domain = get_option('wpavatar_custom_cdn', '');
+            $cdn_domain = wpavatar_get_option('wpavatar_custom_cdn', '');
             if (!empty($cdn_domain) && strpos($url, $cdn_domain) !== false) {
                 $is_avatar_url = true;
             }
         }
 
-        // 检查是否为Gravatar URL
         if (!$is_avatar_url) {
             foreach (Cravatar::$gravatar_domains as $domain) {
                 if (strpos($url, $domain) !== false) {
@@ -355,7 +495,7 @@ class Cache {
         $hash = self::get_avatar_hash($id_or_email);
         $cache_file = self::get_cache_path($hash, $size);
 
-        $cache_expire = get_option('wpavatar_cache_expire', 7) * DAY_IN_SECONDS;
+        $cache_expire = wpavatar_get_option('wpavatar_cache_expire', 7) * DAY_IN_SECONDS;
         if (file_exists($cache_file) && filemtime($cache_file) > (time() - $cache_expire)) {
             $cached_url = content_url(str_replace(WP_CONTENT_DIR, '', $cache_file));
             return str_replace($url, esc_url($cached_url), $avatar);
@@ -370,46 +510,51 @@ class Cache {
     }
 
     public static function get_avatar_hash($id_or_email) {
-        $email = '';
-
-        if (is_object($id_or_email)) {
-            if (isset($id_or_email->comment_author_email)) {
-                $email = $id_or_email->comment_author_email;
-            } elseif (isset($id_or_email->user_email)) {
-                $email = $id_or_email->user_email;
-            }
-        } elseif (is_numeric($id_or_email)) {
-            $user = get_user_by('id', $id_or_email);
-            $email = $user ? $user->user_email : '';
-        } elseif (is_string($id_or_email) && is_email($id_or_email)) {
-            $email = $id_or_email;
-        }
+        $email = Cravatar::get_email_from_id_or_email($id_or_email);
 
         if (empty($email)) {
             return '';
         }
 
-        $cdn_type = get_option('wpavatar_cdn_type', 'cravatar_route');
-        $use_md5 = true;
+        // 获取用户设置的哈希方法
+        $cdn_type = wpavatar_get_option('wpavatar_cdn_type', 'cravatar_route');
+        $hash_method = wpavatar_get_option('wpavatar_hash_method', 'md5');
 
-        // 确定使用的哈希方法
-        if ($cdn_type !== 'cravatar_route' &&
-            strpos(get_option('wpavatar_third_party_mirror', ''), 'cravatar') === false &&
-            strpos(get_option('wpavatar_custom_cdn', ''), 'cravatar') === false) {
-            $hash_method = get_option('wpavatar_hash_method', 'md5');
-            $use_md5 = ($hash_method === 'md5');
+        // 检查是否需要强制使用MD5（针对Cravatar服务）
+        $force_md5 = false;
+        if ($cdn_type === 'cravatar_route') {
+            $force_md5 = true;
+        } elseif ($cdn_type === 'custom') {
+            $custom_cdn = wpavatar_get_option('wpavatar_custom_cdn', '');
+            if (strpos(strtolower($custom_cdn), 'cravatar') !== false) {
+                $force_md5 = true;
+            }
         }
 
-        if (!$use_md5) {
-            return hash('sha256', strtolower(trim($email)));
-        } else {
+        // 根据设置和条件选择哈希方法
+        if ($force_md5 || $hash_method === 'md5') {
             return md5(strtolower(trim($email)));
+        } else {
+            // 使用SHA256
+            if (function_exists('hash')) {
+                return hash('sha256', strtolower(trim($email)));
+            } else {
+                // 如果不支持hash函数，回退到MD5
+                return md5(strtolower(trim($email)));
+            }
         }
     }
 
     public static function get_cache_path($hash, $size) {
-        $dir = get_option('wpavatar_cache_path', WPAVATAR_CACHE_DIR);
+        $dir = wpavatar_get_option('wpavatar_cache_path', WPAVATAR_CACHE_DIR);
         $dir = trailingslashit($dir);
+
+        // Add site-specific directory if multisite
+        if (is_multisite()) {
+            $blog_id = get_current_blog_id();
+            $dir = $dir . 'site-' . $blog_id . '/';
+        }
+
         wp_mkdir_p($dir);
         return $dir . "{$hash}-{$size}.jpg";
     }
@@ -428,7 +573,7 @@ class Cache {
             return false;
         }
 
-        $timeout = get_option('wpavatar_timeout', 5);
+        $timeout = wpavatar_get_option('wpavatar_timeout', 5);
 
         $response = wp_remote_get($url, [
             'timeout' => $timeout,
@@ -470,7 +615,7 @@ class Cache {
     }
 
     public static function cache_comment_avatar($comment_id, $comment_approved) {
-        if ($comment_approved !== 1 || !get_option('wpavatar_enable_cache', true)) {
+        if ($comment_approved !== 1 || !wpavatar_get_option('wpavatar_enable_cache', true)) {
             return;
         }
 
@@ -480,7 +625,7 @@ class Cache {
         }
 
         $email = $comment->comment_author_email;
-        $size = get_option('wpavatar_shortcode_size', 96);
+        $size = wpavatar_get_option('wpavatar_shortcode_size', 96);
 
         $avatar_url = get_avatar_url($email, ['size' => $size]);
 
@@ -493,14 +638,13 @@ class Cache {
 
         self::cache_remote_avatar($avatar_url, $cache_file);
 
-        // 缓存2x尺寸的头像，用于高分辨率显示器
         $retina_url = get_avatar_url($email, ['size' => $size * 2]);
         $retina_cache_file = self::get_cache_path($hash, $size * 2);
         self::cache_remote_avatar($retina_url, $retina_cache_file);
     }
 
     public static function cache_user_avatar($user_id) {
-        if (!get_option('wpavatar_enable_cache', true)) {
+        if (!wpavatar_get_option('wpavatar_enable_cache', true)) {
             return;
         }
 
@@ -510,7 +654,7 @@ class Cache {
         }
 
         $email = $user->user_email;
-        $size = get_option('wpavatar_shortcode_size', 96);
+        $size = wpavatar_get_option('wpavatar_shortcode_size', 96);
 
         $avatar_url = get_avatar_url($email, ['size' => $size]);
 
@@ -523,29 +667,44 @@ class Cache {
 
         self::cache_remote_avatar($avatar_url, $cache_file);
 
-        // 缓存2x尺寸的头像，用于高分辨率显示器
         $retina_url = get_avatar_url($email, ['size' => $size * 2]);
         $retina_cache_file = self::get_cache_path($hash, $size * 2);
         self::cache_remote_avatar($retina_url, $retina_cache_file);
     }
 
     public static function purge_expired() {
-        $dir = get_option('wpavatar_cache_path', WPAVATAR_CACHE_DIR);
-        if (!file_exists($dir) || !is_dir($dir)) {
+        $base_dir = wpavatar_get_option('wpavatar_cache_path', WPAVATAR_CACHE_DIR);
+        if (!file_exists($base_dir) || !is_dir($base_dir)) {
             return;
         }
 
-        $files = glob(trailingslashit($dir) . '*.jpg');
-        if (!$files) {
-            return;
-        }
-
-        $expire_days = get_option('wpavatar_cache_expire', 7);
+        $expire_days = wpavatar_get_option('wpavatar_cache_expire', 7);
         $expire_time = time() - ($expire_days * DAY_IN_SECONDS);
 
-        foreach ($files as $file) {
-            if (filemtime($file) < $expire_time) {
-                @unlink($file);
+        // If multisite, purge site-specific directory
+        if (is_multisite()) {
+            $blog_id = get_current_blog_id();
+            $site_dir = trailingslashit($base_dir) . 'site-' . $blog_id . '/';
+
+            if (file_exists($site_dir) && is_dir($site_dir)) {
+                $files = glob($site_dir . '*.jpg');
+                if ($files) {
+                    foreach ($files as $file) {
+                        if (filemtime($file) < $expire_time) {
+                            @unlink($file);
+                        }
+                    }
+                }
+            }
+        } else {
+            // For non-multisite, purge all files in the base directory
+            $files = glob(trailingslashit($base_dir) . '*.jpg');
+            if ($files) {
+                foreach ($files as $file) {
+                    if (filemtime($file) < $expire_time) {
+                        @unlink($file);
+                    }
+                }
             }
         }
     }
@@ -557,134 +716,273 @@ class Cache {
     }
 
     public static function check_cache_status() {
-        $dir = get_option('wpavatar_cache_path', WPAVATAR_CACHE_DIR);
-        $stats = [
-            'path' => $dir,
-            'exists' => file_exists($dir) && is_dir($dir),
-            'writable' => is_writable($dir),
-            'file_count' => 0,
-            'size' => 0
-        ];
+        $base_dir = wpavatar_get_option('wpavatar_cache_path', WPAVATAR_CACHE_DIR);
 
-        if ($stats['exists']) {
-            $files = glob(trailingslashit($dir) . '*.jpg');
-            $stats['file_count'] = count($files ?: []);
-            foreach ($files ?: [] as $file) {
-                $stats['size'] += filesize($file);
-            }
-            $stats['size'] = size_format($stats['size']);
-        }
+        // For multisite, check site-specific directory
+        if (is_multisite()) {
+            $blog_id = get_current_blog_id();
+            $site_dir = trailingslashit($base_dir) . 'site-' . $blog_id;
 
-        ob_start();
-        ?>
-        <div class="cache-stats">
-            <p><?php printf(__('缓存目录: %s', 'wpavatar'), esc_html($stats['path'])); ?></p>
-            <p><?php printf(__('目录存在: %s', 'wpavatar'), $stats['exists'] ? __('是', 'wpavatar') : __('否', 'wpavatar')); ?></p>
-            <p><?php printf(__('目录可写: %s', 'wpavatar'), $stats['writable'] ? __('是', 'wpavatar') : __('否', 'wpavatar')); ?></p>
-            <p><?php printf(__('缓存文件数: %d', 'wpavatar'), $stats['file_count']); ?></p>
-            <p><?php printf(__('缓存总大小: %s', 'wpavatar'), $stats['size']); ?></p>
-        </div>
-        <?php
-        return ob_get_clean();
-    }
-}
+            $stats = [
+                'path' => $site_dir,
+                'exists' => file_exists($site_dir) && is_dir($site_dir),
+                'writable' => is_writable($site_dir),
+                'file_count' => 0,
+                                'size' => 0
+                            ];
 
-class Shortcode {
-    public static function init() {
-        add_shortcode('wpavatar', [__CLASS__, 'render_avatar']);
-        add_shortcode('wpavatar_username', [__CLASS__, 'render_username']);
-        add_filter('walker_nav_menu_start_el', [__CLASS__, 'menu_item_replace'], 10, 4);
-    }
+                            if ($stats['exists']) {
+                                $files = glob(trailingslashit($site_dir) . '*.jpg');
+                                $stats['file_count'] = count($files ?: []);
+                                foreach ($files ?: [] as $file) {
+                                    $stats['size'] += filesize($file);
+                                }
+                                $stats['size'] = size_format($stats['size']);
+                            }
+                        } else {
+                            // For single site
+                            $stats = [
+                                'path' => $base_dir,
+                                'exists' => file_exists($base_dir) && is_dir($base_dir),
+                                'writable' => is_writable($base_dir),
+                                'file_count' => 0,
+                                'size' => 0
+                            ];
 
-    public static function render_avatar($atts) {
-        $default_size = get_option('wpavatar_shortcode_size', 96);
-        $default_class = get_option('wpavatar_shortcode_class', 'wpavatar');
-        $default_shape = get_option('wpavatar_shortcode_shape', 'square');
+                            if ($stats['exists']) {
+                                $files = glob(trailingslashit($base_dir) . '*.jpg');
+                                $stats['file_count'] = count($files ?: []);
+                                foreach ($files ?: [] as $file) {
+                                    $stats['size'] += filesize($file);
+                                }
+                                $stats['size'] = size_format($stats['size']);
+                            }
+                        }
 
-        $atts = shortcode_atts([
-            'size'    => $default_size,
-            'user_id' => get_current_user_id(),
-            'class'   => $default_class,
-            'email'   => '',
-            'shape'   => $default_shape,
-            'title'   => ''
-        ], $atts);
+                        ob_start();
+                        ?>
+                        <div class="cache-stats">
+                            <p><?php printf(__('缓存目录: %s', 'wpavatar'), esc_html($stats['path'])); ?></p>
+                            <p><?php printf(__('目录存在: %s', 'wpavatar'), $stats['exists'] ? __('是', 'wpavatar') : __('否', 'wpavatar')); ?></p>
+                            <p><?php printf(__('目录可写: %s', 'wpavatar'), $stats['writable'] ? __('是', 'wpavatar') : __('否', 'wpavatar')); ?></p>
+                            <p><?php printf(__('缓存文件数: %d', 'wpavatar'), $stats['file_count']); ?></p>
+                            <p><?php printf(__('缓存总大小: %s', 'wpavatar'), $stats['size']); ?></p>
+                        </div>
+                        <?php
+                        return ob_get_clean();
+                    }
 
-        if (empty($atts['user_id']) && empty($atts['email'])) {
-            $atts['user_id'] = get_current_user_id();
-        }
+                    public static function check_all_cache_status() {
+                        $base_dir = wpavatar_get_option('wpavatar_cache_path', WPAVATAR_CACHE_DIR);
 
-        $classes = [$atts['class']];
+                        $global_stats = [
+                            'path' => $base_dir,
+                            'exists' => file_exists($base_dir) && is_dir($base_dir),
+                            'writable' => is_writable($base_dir),
+                            'site_count' => 0,
+                            'total_files' => 0,
+                            'total_size' => 0
+                        ];
 
-        if ($atts['shape'] === 'circle') {
-            $classes[] = 'avatar-circle';
-            $style = 'style="border-radius: 50%; overflow: hidden;"';
-        } elseif ($atts['shape'] === 'rounded') {
-            $classes[] = 'avatar-rounded';
-            $style = 'style="border-radius: 8px; overflow: hidden;"';
-        } else {
-            $classes[] = 'avatar-square';
-            $style = '';
-        }
+                        $site_stats = [];
 
-        $avatar_args = [
-            'class' => implode(' ', $classes),
-            'size' => intval($atts['size']),
-            'extra_attr' => $style
-        ];
+                        if ($global_stats['exists']) {
+                            // Find all site directories
+                            $site_dirs = glob(trailingslashit($base_dir) . 'site-*', GLOB_ONLYDIR);
+                            $global_stats['site_count'] = count($site_dirs ?: []);
 
-        if (!empty($atts['title'])) {
-            $avatar_args['extra_attr'] .= ' title="' . esc_attr($atts['title']) . '"';
-        }
+                            // Check each site directory
+                            foreach ($site_dirs ?: [] as $site_dir) {
+                                $blog_id = intval(str_replace(trailingslashit($base_dir) . 'site-', '', $site_dir));
+                                if ($blog_id > 0) {
+                                    $files = glob($site_dir . '/*.jpg');
+                                    $file_count = count($files ?: []);
+                                    $global_stats['total_files'] += $file_count;
 
-        ob_start();
-        if (!empty($atts['email'])) {
-            echo get_avatar($atts['email'], intval($atts['size']), 'default', '', $avatar_args);
-        } else {
-            echo get_avatar($atts['user_id'], intval($atts['size']), 'default', '', $avatar_args);
-        }
-        return ob_get_clean();
-    }
+                                    $size = 0;
+                                    foreach ($files ?: [] as $file) {
+                                        $size += filesize($file);
+                                        $global_stats['total_size'] += filesize($file);
+                                    }
 
-    public static function render_username($atts) {
-        $atts = shortcode_atts([
-            'user_id' => get_current_user_id(),
-            'before' => '',
-            'after' => ''
-        ], $atts);
+                                    // Try to get blog name
+                                    $blog_name = '';
+                                    if (function_exists('get_blog_details')) {
+                                        $blog_details = get_blog_details($blog_id);
+                                        if ($blog_details) {
+                                            $blog_name = $blog_details->blogname;
+                                        }
+                                    }
 
-        if (!empty($atts['user_id'])) {
-            $user = get_user_by('id', $atts['user_id']);
-        } else {
-            $user = wp_get_current_user();
-        }
+                                    $site_stats[] = [
+                                        'id' => $blog_id,
+                                        'name' => $blog_name ?: sprintf(__('站点 #%d', 'wpavatar'), $blog_id),
+                                        'files' => $file_count,
+                                        'size' => size_format($size)
+                                    ];
+                                }
+                            }
 
-        $username = $user && $user->display_name ? $user->display_name : __('匿名用户', 'wpavatar');
-        return $atts['before'] . $username . $atts['after'];
-    }
+                            // Also check for legacy non-site specific files
+                            $legacy_files = glob(trailingslashit($base_dir) . '*.jpg');
+                            $legacy_count = count($legacy_files ?: []);
+                            if ($legacy_count > 0) {
+                                $global_stats['total_files'] += $legacy_count;
 
-    public static function menu_item_replace($item_output, $item, $depth, $args) {
-        if (strpos($item_output, '{wpavatar}') !== false) {
-            $item_output = str_replace('{wpavatar}', do_shortcode('[wpavatar shape="circle" size="32"]'), $item_output);
-        }
-        if (strpos($item_output, '{wpavatar_username}') !== false) {
-            $item_output = str_replace('{wpavatar_username}', do_shortcode('[wpavatar_username]'), $item_output);
-        }
-        return $item_output;
-    }
+                                $legacy_size = 0;
+                                foreach ($legacy_files ?: [] as $file) {
+                                    $legacy_size += filesize($file);
+                                    $global_stats['total_size'] += filesize($file);
+                                }
 
-    public static function generate_preview($user_id = 0, $shape = 'square', $size = 96) {
-        if (!$user_id) {
-            $user_id = get_current_user_id();
-        }
+                                $site_stats[] = [
+                                    'id' => 0,
+                                    'name' => __('旧版缓存文件（非站点特定）', 'wpavatar'),
+                                    'files' => $legacy_count,
+                                    'size' => size_format($legacy_size)
+                                ];
+                            }
+                        }
 
-        $atts = [
-            'user_id' => $user_id,
-            'shape' => $shape,
-            'size' => $size,
-            'class' => 'wpavatar-preview'
-        ];
+                        // Sort sites by file count (descending)
+                        usort($site_stats, function($a, $b) {
+                            return $b['files'] - $a['files'];
+                        });
 
-        return self::render_avatar($atts);
-    }
-}
+                        ob_start();
+                        ?>
+                        <div class="network-cache-stats">
+                            <h4><?php _e('全局缓存统计', 'wpavatar'); ?></h4>
+                            <p><?php printf(__('缓存根目录: %s', 'wpavatar'), esc_html($global_stats['path'])); ?></p>
+                            <p><?php printf(__('目录存在: %s', 'wpavatar'), $global_stats['exists'] ? __('是', 'wpavatar') : __('否', 'wpavatar')); ?></p>
+                            <p><?php printf(__('目录可写: %s', 'wpavatar'), $global_stats['writable'] ? __('是', 'wpavatar') : __('否', 'wpavatar')); ?></p>
+                            <p><?php printf(__('站点缓存目录数: %d', 'wpavatar'), $global_stats['site_count']); ?></p>
+                            <p><?php printf(__('总缓存文件数: %d', 'wpavatar'), $global_stats['total_files']); ?></p>
+                            <p><?php printf(__('总缓存大小: %s', 'wpavatar'), size_format($global_stats['total_size'])); ?></p>
+
+                            <?php if (!empty($site_stats)): ?>
+                                <h4><?php _e('站点缓存详情', 'wpavatar'); ?></h4>
+                                <table class="widefat striped" style="margin-top: 10px;">
+                                    <thead>
+                                        <tr>
+                                            <th><?php _e('站点', 'wpavatar'); ?></th>
+                                            <th><?php _e('文件数', 'wpavatar'); ?></th>
+                                            <th><?php _e('大小', 'wpavatar'); ?></th>
+                                        </tr>
+                                    </thead>
+                                    <tbody>
+                                        <?php foreach ($site_stats as $stat): ?>
+                                            <tr>
+                                                <td><?php echo esc_html($stat['name']); ?></td>
+                                                <td><?php echo esc_html($stat['files']); ?></td>
+                                                <td><?php echo esc_html($stat['size']); ?></td>
+                                            </tr>
+                                        <?php endforeach; ?>
+                                    </tbody>
+                                </table>
+                            <?php endif; ?>
+                        </div>
+                        <?php
+                        return ob_get_clean();
+                    }
+                }
+
+                class Shortcode {
+                    public static function init() {
+                        add_shortcode('wpavatar', [__CLASS__, 'render_avatar']);
+                        add_shortcode('wpavatar_username', [__CLASS__, 'render_username']);
+                        add_filter('walker_nav_menu_start_el', [__CLASS__, 'menu_item_replace'], 10, 4);
+                    }
+
+                    public static function render_avatar($atts) {
+                        $default_size = wpavatar_get_option('wpavatar_shortcode_size', 96);
+                        $default_class = wpavatar_get_option('wpavatar_shortcode_class', 'wpavatar');
+                        $default_shape = wpavatar_get_option('wpavatar_shortcode_shape', 'square');
+
+                        $atts = shortcode_atts([
+                            'size'    => $default_size,
+                            'user_id' => get_current_user_id(),
+                            'class'   => $default_class,
+                            'email'   => '',
+                            'shape'   => $default_shape,
+                            'title'   => ''
+                        ], $atts);
+
+                        if (empty($atts['user_id']) && empty($atts['email'])) {
+                            $atts['user_id'] = get_current_user_id();
+                        }
+
+                        $classes = [$atts['class']];
+
+                        if ($atts['shape'] === 'circle') {
+                            $classes[] = 'avatar-circle';
+                            $style = 'style="border-radius: 50%; overflow: hidden;"';
+                        } elseif ($atts['shape'] === 'rounded') {
+                            $classes[] = 'avatar-rounded';
+                            $style = 'style="border-radius: 8px; overflow: hidden;"';
+                        } else {
+                            $classes[] = 'avatar-square';
+                            $style = '';
+                        }
+
+                        $avatar_args = [
+                            'class' => implode(' ', $classes),
+                            'size' => intval($atts['size']),
+                            'extra_attr' => $style
+                        ];
+
+                        if (!empty($atts['title'])) {
+                            $avatar_args['extra_attr'] .= ' title="' . esc_attr($atts['title']) . '"';
+                        }
+
+                        ob_start();
+                        if (!empty($atts['email'])) {
+                            echo get_avatar($atts['email'], intval($atts['size']), 'default', '', $avatar_args);
+                        } else {
+                            echo get_avatar($atts['user_id'], intval($atts['size']), 'default', '', $avatar_args);
+                        }
+                        return ob_get_clean();
+                    }
+
+                    public static function render_username($atts) {
+                        $atts = shortcode_atts([
+                            'user_id' => get_current_user_id(),
+                            'before' => '',
+                            'after' => ''
+                        ], $atts);
+
+                        if (!empty($atts['user_id'])) {
+                            $user = get_user_by('id', $atts['user_id']);
+                        } else {
+                            $user = wp_get_current_user();
+                        }
+
+                        $username = $user && $user->display_name ? $user->display_name : __('匿名用户', 'wpavatar');
+                        return $atts['before'] . $username . $atts['after'];
+                    }
+
+                    public static function menu_item_replace($item_output, $item, $depth, $args) {
+                        if (strpos($item_output, '{wpavatar}') !== false) {
+                            $item_output = str_replace('{wpavatar}', do_shortcode('[wpavatar shape="circle" size="32"]'), $item_output);
+                        }
+                        if (strpos($item_output, '{wpavatar_username}') !== false) {
+                            $item_output = str_replace('{wpavatar_username}', do_shortcode('[wpavatar_username]'), $item_output);
+                        }
+                        return $item_output;
+                    }
+
+                    public static function generate_preview($user_id = 0, $shape = 'square', $size = 96) {
+                        if (!$user_id) {
+                            $user_id = get_current_user_id();
+                        }
+
+                        $atts = [
+                            'user_id' => $user_id,
+                            'shape' => $shape,
+                            'size' => $size,
+                            'class' => 'wpavatar-preview'
+                        ];
+
+                        return self::render_avatar($atts);
+                    }
+                }
diff --git a/includes/multisite.php b/includes/multisite.php
new file mode 100644
index 0000000..ffbc2b8
--- /dev/null
+++ b/includes/multisite.php
@@ -0,0 +1,1134 @@
+<?php
+/**
+ * Enhanced Network Integration for WPAvatar
+ *
+ * This file provides multisite support for the WPAvatar plugin,
+ * allowing for network-wide settings management.
+ */
+
+namespace WPAvatar;
+
+/**
+ * Class to handle multisite network functionality
+ */
+class Network {
+    /**
+     * Default network controlled options
+     */
+    private static $default_controlled_options = [
+        'wpavatar_enable_cravatar',
+        'wpavatar_cdn_type',
+        'wpavatar_cravatar_route',
+        'wpavatar_third_party_mirror',
+        'wpavatar_custom_cdn'
+    ];
+
+    /**
+     * Initialize network functionality
+     */
+    public static function init() {
+        // Register network settings when in network admin
+        if (is_network_admin()) {
+            add_action('network_admin_menu', [__CLASS__, 'add_network_menu']);
+            add_action('network_admin_edit_wpavatar_network_settings', [__CLASS__, 'save_network_settings']);
+            add_action('admin_enqueue_scripts', [__CLASS__, 'network_admin_scripts']);
+        }
+
+        // Add network settings link in network plugins list
+        add_filter('network_admin_plugin_action_links_wpavatar/wpavatar.php', [__CLASS__, 'add_network_action_links']);
+
+        // Add notice in site admin settings when network managed
+        if (is_multisite() && get_site_option('wpavatar_network_enabled', 1)) {
+            add_action('admin_notices', [__CLASS__, 'network_managed_notice']);
+            add_action('admin_menu', [__CLASS__, 'maybe_remove_site_menu'], 999);
+        }
+
+        // Hook for new blog creation
+        add_action('wpmu_new_blog', [__CLASS__, 'new_site_created']);
+    }
+
+    /**
+     * Handle creation of new blog in multisite
+     */
+    public static function new_site_created($blog_id) {
+        if (get_site_option('wpavatar_network_enabled', 1)) {
+            // Create cache directory for the new site
+            $cache_path = get_site_option('wpavatar_cache_path', WPAVATAR_CACHE_DIR);
+            $site_cache_dir = trailingslashit($cache_path) . 'site-' . $blog_id;
+
+            if (!file_exists($site_cache_dir)) {
+                wp_mkdir_p($site_cache_dir);
+
+                // Create index.php to prevent directory listing
+                $index_file = $site_cache_dir . '/index.php';
+                if (!file_exists($index_file)) {
+                    @file_put_contents($index_file, '<?php // Silence is golden.');
+                }
+            }
+
+            // If network settings are enforced, copy relevant settings to the new site
+            if (get_site_option('wpavatar_network_enforce', 0)) {
+                switch_to_blog($blog_id);
+
+                // Apply all network settings to the new site
+                $options_to_copy = [
+                    'wpavatar_enable_cravatar',
+                    'wpavatar_cdn_type',
+                    'wpavatar_cravatar_route',
+                    'wpavatar_third_party_mirror',
+                    'wpavatar_custom_cdn',
+                    'wpavatar_hash_method',
+                    'wpavatar_timeout',
+                    'wpavatar_enable_cache',
+                    'wpavatar_cache_path',
+                    'wpavatar_cache_expire',
+                    'wpavatar_seo_alt',
+                    'wpavatar_fallback_mode',
+                    'wpavatar_fallback_avatar',
+                    'wpavatar_shortcode_size',
+                    'wpavatar_shortcode_class',
+                    'wpavatar_shortcode_shape'
+                ];
+
+                foreach ($options_to_copy as $option) {
+                    update_option($option, get_site_option($option));
+                }
+
+                restore_current_blog();
+            }
+        }
+    }
+
+    /**
+     * Add network admin scripts and styles
+     */
+    public static function network_admin_scripts($hook) {
+        if ($hook !== 'settings_page_wpavatar-network') {
+            return;
+        }
+
+        // Enqueue the same scripts and styles as the regular admin page
+        wp_enqueue_style(
+            'wpavatar-admin',
+            WPAVATAR_PLUGIN_URL . 'assets/css/admin.css',
+            [],
+            WPAVATAR_VERSION
+        );
+
+        wp_enqueue_script(
+            'wpavatar-admin',
+            WPAVATAR_PLUGIN_URL . 'assets/js/admin.js',
+            ['jquery'],
+            WPAVATAR_VERSION,
+            true
+        );
+
+        wp_localize_script('wpavatar-admin', 'wpavatar', [
+            'nonce' => wp_create_nonce('wpavatar_admin_nonce'),
+            'ajaxurl' => admin_url('admin-ajax.php'),
+            'cache_path' => get_site_option('wpavatar_cache_path', WPAVATAR_CACHE_DIR),
+            'plugin_url' => WPAVATAR_PLUGIN_URL,
+            'assets_url' => WPAVATAR_PLUGIN_URL . 'assets/',
+            'is_network_admin' => is_network_admin() ? '1' : '0',
+        ]);
+
+        wp_localize_script('wpavatar-admin', 'wpavatar_l10n', [
+            'checking' => __('检查中...', 'wpavatar'),
+            'checking_status' => __('正在检查缓存状态...', 'wpavatar'),
+            'check_failed' => __('检查失败，请重试', 'wpavatar'),
+            'request_failed' => __('请求失败，请检查网络连接', 'wpavatar'),
+            'check_cache' => __('检查缓存状态', 'wpavatar'),
+            'confirm_purge' => __('确定要清空所有缓存头像吗？此操作无法撤销。', 'wpavatar'),
+            'purging' => __('清空中...', 'wpavatar'),
+            'purging_cache' => __('正在清空缓存...', 'wpavatar'),
+            'purge_failed' => __('清空失败，请重试', 'wpavatar'),
+            'purge_cache' => __('清空缓存', 'wpavatar'),
+            'enter_custom_cdn' => __('请输入自定义CDN域名', 'wpavatar'),
+            'enter_cache_path' => __('请输入缓存目录路径', 'wpavatar'),
+            'settings_saved' => __('设置已成功保存。', 'wpavatar'),
+            'confirm_import' => __('确定要从所选站点导入设置吗？此操作将覆盖当前的网络设置。', 'wpavatar'),
+            'confirm_reset' => __('确定要重置所有控制选项吗？该操作会将所有站点恢复为各自的设置。', 'wpavatar')
+        ]);
+    }
+
+    /**
+     * Add network menu
+     */
+    public static function add_network_menu() {
+        add_submenu_page(
+            'settings.php',
+            __('WPAvatar网络设置', 'wpavatar'),
+            __('WPAvatar', 'wpavatar'),
+            'manage_network_options',
+            'wpavatar-network',
+            [__CLASS__, 'render_network_page']
+        );
+    }
+
+    /**
+     * Add network action links
+     */
+    public static function add_network_action_links($links) {
+        $settings_link = '<a href="' . network_admin_url('settings.php?page=wpavatar-network') . '">' . __('网络设置', 'wpavatar') . '</a>';
+        array_unshift($links, $settings_link);
+        return $links;
+    }
+
+    /**
+     * Display network managed notice on site-level settings
+     */
+    public static function network_managed_notice() {
+        $screen = get_current_screen();
+        if (!$screen || $screen->id !== 'settings_page_wpavatar-settings') {
+            return;
+        }
+
+        $network_controlled_options = get_site_option('wpavatar_network_controlled_options', self::$default_controlled_options);
+        if (!is_array($network_controlled_options)) {
+            $network_controlled_options = explode(',', $network_controlled_options);
+        }
+
+        $controlled_count = count($network_controlled_options);
+        $option_count = 15; // Approximate total number of WPAvatar options
+
+        if (get_site_option('wpavatar_network_enforce', 0)) {
+            echo '<div class="notice notice-warning"><p>' .
+                __('WPAvatar 插件正由网络管理员强制管理。所有设置将使用网络级别配置，任何更改将被忽略。如有疑问请联系网络管理员。', 'wpavatar') .
+                '</p></div>';
+        } else if ($controlled_count > 0) {
+            echo '<div class="notice notice-info"><p>' .
+                sprintf(
+                    __('WPAvatar 插件的 %d 项设置由网络管理员控制。这些设置的更改将不会生效。', 'wpavatar'),
+                    $controlled_count
+                ) .
+                '</p></div>';
+        }
+    }
+
+    /**
+     * Maybe remove site menu if network settings enforced
+     */
+    public static function maybe_remove_site_menu() {
+        // If network settings completely override site settings
+        if (get_site_option('wpavatar_network_enforce', 0)) {
+            remove_submenu_page('options-general.php', 'wpavatar-settings');
+        }
+    }
+
+    /**
+     * Render network settings page
+     */
+    public static function render_network_page() {
+        if (!current_user_can('manage_network_options')) {
+            wp_die(__('您没有足够权限访问此页面。', 'wpavatar'));
+        }
+
+        // Display update message if settings were just updated
+        if (isset($_GET['updated']) && $_GET['updated'] == 'true') {
+            echo '<div class="notice notice-success is-dismissible"><p>' .
+                __('网络设置已保存。', 'wpavatar') .
+                '</p></div>';
+        }
+
+        $active_tab = isset($_GET['tab']) ? sanitize_text_field($_GET['tab']) : 'network';
+
+        ?>
+        <div class="wrap wpavatar-settings">
+            <h1><?php esc_html_e('WPAvatar网络设置', 'wpavatar'); ?>
+                <span style="font-size: 13px; padding-left: 10px;"><?php printf(esc_html__('Version: %s', 'wpavatar'), esc_html(WPAVATAR_VERSION)); ?></span>
+                <a href="https://wpavatar.com/document/" target="_blank" class="button button-secondary" style="margin-left: 10px;"><?php esc_html_e('文档', 'wpavatar'); ?></a>
+                <a href="https://sharecms.com/forums/" target="_blank" class="button button-secondary"><?php esc_html_e('支持', 'wpavatar'); ?></a>
+            </h1>
+
+            <div id="wpavatar-status" class="notice" style="display:none; margin-top: 10px; padding: 8px 12px;"></div>
+
+            <!-- Add tabs for each section -->
+            <div class="wpavatar-card">
+                <div class="wpavatar-tabs-wrapper">
+                    <div class="wpavatar-sync-tabs">
+                        <button type="button" class="wpavatar-tab <?php echo $active_tab === 'network' ? 'active' : ''; ?>" data-tab="network">
+                            <?php _e('网络管理', 'wpavatar'); ?>
+                        </button>
+                        <button type="button" class="wpavatar-tab <?php echo $active_tab === 'basic' ? 'active' : ''; ?>" data-tab="basic">
+                            <?php _e('基础设置', 'wpavatar'); ?>
+                        </button>
+                        <button type="button" class="wpavatar-tab <?php echo $active_tab === 'cache' ? 'active' : ''; ?>" data-tab="cache">
+                            <?php _e('缓存控制', 'wpavatar'); ?>
+                        </button>
+                        <button type="button" class="wpavatar-tab <?php echo $active_tab === 'advanced' ? 'active' : ''; ?>" data-tab="advanced">
+                            <?php _e('高级设置', 'wpavatar'); ?>
+                        </button>
+                        <button type="button" class="wpavatar-tab <?php echo $active_tab === 'shortcodes' ? 'active' : ''; ?>" data-tab="shortcodes">
+                            <?php _e('头像简码', 'wpavatar'); ?>
+                        </button>
+                        <button type="button" class="wpavatar-tab <?php echo $active_tab === 'tools' ? 'active' : ''; ?>" data-tab="tools">
+                            <?php _e('工具', 'wpavatar'); ?>
+                        </button>
+                    </div>
+                </div>
+
+                <!-- Network Management Section -->
+                <div class="wpavatar-section" id="wpavatar-section-network" style="<?php echo $active_tab !== 'network' ? 'display: none;' : ''; ?>">
+                    <h2><?php _e('网络管理设置', 'wpavatar'); ?></h2>
+                    <p class="wpavatar-section-desc"><?php _e('配置多站点网络的WPAvatar管理方式。', 'wpavatar'); ?></p>
+
+                    <form method="post" action="edit.php?action=wpavatar_network_settings" id="wpavatar-network-form">
+                        <?php wp_nonce_field('wpavatar_network_settings'); ?>
+                        <input type="hidden" name="tab" value="network">
+
+                        <table class="form-table">
+                            <tr>
+                                <th><?php _e('启用网络级管理', 'wpavatar'); ?></th>
+                                <td>
+                                    <label class="wpavatar-switch">
+                                        <input type="checkbox" name="wpavatar_network_enabled" value="1" <?php checked(get_site_option('wpavatar_network_enabled', 1)); ?>>
+                                        <span class="wpavatar-slider"></span>
+                                        <span class="wpavatar-switch-label"><?php _e('在所有站点使用网络设置', 'wpavatar'); ?></span>
+                                    </label>
+                                    <p class="description"><?php _e('启用后，所有子站点将使用选定的网络设置，子站点的对应设置将被覆盖', 'wpavatar'); ?></p>
+                                </td>
+                            </tr>
+                            <tr>
+                                <th><?php _e('强制使用网络设置', 'wpavatar'); ?></th>
+                                <td>
+                                    <label class="wpavatar-switch">
+                                        <input type="checkbox" name="wpavatar_network_enforce" value="1" <?php checked(get_site_option('wpavatar_network_enforce', 0)); ?>>
+                                        <span class="wpavatar-slider"></span>
+                                        <span class="wpavatar-switch-label"><?php _e('完全禁用子站点设置页面', 'wpavatar'); ?></span>
+                                    </label>
+                                    <p class="description"><?php _e('启用后，子站点将无法访问WPAvatar设置页面，完全由网络管理', 'wpavatar'); ?></p>
+                                </td>
+                            </tr>
+                            <tr>
+                                <th><?php _e('网络控制选项', 'wpavatar'); ?></th>
+                                <td>
+                                    <?php
+                                    // Get current controlled options
+                                    $controlled_options = get_site_option('wpavatar_network_controlled_options', self::$default_controlled_options);
+                                    if (!is_array($controlled_options)) {
+                                        $controlled_options = explode(',', $controlled_options);
+                                    }
+
+                                    // Define all available options with user-friendly labels
+                                    $all_options = [
+                                        'wpavatar_enable_cravatar' => __('启用初认头像', 'wpavatar'),
+                                        'wpavatar_cdn_type' => __('线路选择', 'wpavatar'),
+                                        'wpavatar_cravatar_route' => __('Cravatar官方源', 'wpavatar'),
+                                        'wpavatar_third_party_mirror' => __('第三方镜像', 'wpavatar'),
+                                        'wpavatar_custom_cdn' => __('自定义CDN', 'wpavatar'),
+                                        'wpavatar_hash_method' => __('头像哈希方法', 'wpavatar'),
+                                        'wpavatar_timeout' => __('超时设置', 'wpavatar'),
+                                        'wpavatar_enable_cache' => __('启用本地缓存', 'wpavatar'),
+                                        'wpavatar_cache_path' => __('缓存目录', 'wpavatar'),
+                                        'wpavatar_cache_expire' => __('缓存过期时间', 'wpavatar'),
+                                        'wpavatar_seo_alt' => __('SEO替代文本', 'wpavatar'),
+                                        'wpavatar_fallback_mode' => __('头像加载失败处理', 'wpavatar'),
+                                        'wpavatar_fallback_avatar' => __('备用头像选择', 'wpavatar'),
+                                        'wpavatar_shortcode_size' => __('默认头像大小', 'wpavatar'),
+                                        'wpavatar_shortcode_class' => __('默认CSS类名', 'wpavatar'),
+                                        'wpavatar_shortcode_shape' => __('默认头像形状', 'wpavatar'),
+                                    ];
+
+                                    // Group options by category
+                                    $option_groups = [
+                                        'basic' => [
+                                            'title' => __('基础设置', 'wpavatar'),
+                                            'options' => [
+                                                'wpavatar_enable_cravatar',
+                                                'wpavatar_cdn_type',
+                                                'wpavatar_cravatar_route',
+                                                'wpavatar_third_party_mirror',
+                                                'wpavatar_custom_cdn',
+                                                'wpavatar_hash_method',
+                                                'wpavatar_timeout'
+                                            ]
+                                        ],
+                                        'cache' => [
+                                            'title' => __('缓存控制', 'wpavatar'),
+                                            'options' => [
+                                                'wpavatar_enable_cache',
+                                                'wpavatar_cache_path',
+                                                'wpavatar_cache_expire'
+                                            ]
+                                        ],
+                                        'advanced' => [
+                                            'title' => __('高级设置', 'wpavatar'),
+                                            'options' => [
+                                                'wpavatar_seo_alt',
+                                                'wpavatar_fallback_mode',
+                                                'wpavatar_fallback_avatar'
+                                            ]
+                                        ],
+                                        'shortcodes' => [
+                                            'title' => __('头像简码', 'wpavatar'),
+                                            'options' => [
+                                                'wpavatar_shortcode_size',
+                                                'wpavatar_shortcode_class',
+                                                'wpavatar_shortcode_shape'
+                                            ]
+                                        ]
+                                    ];
+
+                                    // Output options by group
+                                    echo '<div class="network-control-options">';
+                                    foreach ($option_groups as $group => $group_data) {
+                                        echo '<div class="option-group">';
+                                        echo '<h4>' . esc_html($group_data['title']) . '</h4>';
+
+                                        foreach ($group_data['options'] as $option) {
+                                            echo '<label class="wpavatar-checkbox">';
+                                            echo '<input type="checkbox" name="wpavatar_network_controlled_options[]" value="' . esc_attr($option) . '" ' .
+                                                 (in_array($option, $controlled_options) ? 'checked' : '') . '>';
+                                            echo '<span class="wpavatar-checkbox-label">' . esc_html($all_options[$option]) . '</span>';
+                                            echo '</label><br>';
+                                        }
+
+                                        echo '</div>';
+                                    }
+                                    echo '</div>';
+                                    ?>
+                                    <p class="description"><?php _e('选中的选项将在所有站点使用网络设置，未选中的选项可由站点管理员自定义。', 'wpavatar'); ?></p>
+                                    <div class="wpavatar-action-buttons" style="margin-top:10px;">
+                                        <button type="button" id="select-all-options" class="button button-secondary"><?php _e('全选', 'wpavatar'); ?></button>
+                                        <button type="button" id="deselect-all-options" class="button button-secondary"><?php _e('取消全选', 'wpavatar'); ?></button>
+                                        <button type="button" id="reset-default-options" class="button button-secondary"><?php _e('恢复默认', 'wpavatar'); ?></button>
+                                    </div>
+                                </td>
+                            </tr>
+                        </table>
+
+                        <div class="wpavatar-submit-wrapper">
+                            <button type="submit" class="button button-primary"><?php _e('保存网络管理设置', 'wpavatar'); ?></button>
+                        </div>
+                    </form>
+                </div>
+
+                <!-- Basic Settings Section -->
+                <div class="wpavatar-section" id="wpavatar-section-basic" style="<?php echo $active_tab !== 'basic' ? 'display: none;' : ''; ?>">
+                    <h2><?php _e('基础设置', 'wpavatar'); ?></h2>
+                    <p class="wpavatar-section-desc"><?php _e('配置头像服务和CDN设置，应用于所有网络站点。', 'wpavatar'); ?></p>
+
+                    <form method="post" action="edit.php?action=wpavatar_network_settings" id="wpavatar-basic-form">
+                        <?php wp_nonce_field('wpavatar_network_settings'); ?>
+                        <input type="hidden" name="tab" value="basic">
+
+                        <table class="form-table">
+                            <tr>
+                                <th><?php _e('启用初认头像', 'wpavatar'); ?></th>
+                                <td>
+                                    <label class="wpavatar-switch">
+                                        <input type="checkbox" name="wpavatar_enable_cravatar" value="1" <?php checked(get_site_option('wpavatar_enable_cravatar', 1), 1); ?>>
+                                        <span class="wpavatar-slider"></span>
+                                        <span class="wpavatar-switch-label"><?php _e('替换WordPress默认头像为Cravatar', 'wpavatar'); ?></span>
+                                    </label>
+                                    <p class="description"><?php _e('启用后将WordPress默认的Gravatar头像替换为Cravatar，提高国内访问速度', 'wpavatar'); ?></p>
+                                </td>
+                            </tr>
+                            <tr>
+                                <th><?php _e('线路选择', 'wpavatar'); ?></th>
+                                <td>
+                                    <label class="wpavatar-radio">
+                                        <input type="radio" name="wpavatar_cdn_type" value="cravatar_route" <?php checked(get_site_option('wpavatar_cdn_type', 'cravatar_route'), 'cravatar_route'); ?>>
+                                        <span class="wpavatar-radio-label"><?php _e('Cravatar自选线路', 'wpavatar'); ?></span>
+                                    </label><br>
+                                    <label class="wpavatar-radio">
+                                        <input type="radio" name="wpavatar_cdn_type" value="third_party" <?php checked(get_site_option('wpavatar_cdn_type', 'cravatar_route'), 'third_party'); ?>>
+                                        <span class="wpavatar-radio-label"><?php _e('第三方镜像', 'wpavatar'); ?></span>
+                                    </label><br>
+                                    <label class="wpavatar-radio">
+                                        <input type="radio" name="wpavatar_cdn_type" value="custom" <?php checked(get_site_option('wpavatar_cdn_type', 'cravatar_route'), 'custom'); ?>>
+                                        <span class="wpavatar-radio-label"><?php _e('自定义CDN', 'wpavatar'); ?></span>
+                                    </label>
+                                </td>
+                            </tr>
+                            <tr class="cdn-option cravatar-route-option" <?php echo get_site_option('wpavatar_cdn_type', 'cravatar_route') !== 'cravatar_route' ? 'style="display:none;"' : ''; ?>>
+                                <th><?php _e('Cravatar官方源', 'wpavatar'); ?></th>
+                                <td>
+                                    <select name="wpavatar_cravatar_route" class="wpavatar-select">
+                                        <option value="cravatar.cn" <?php selected(get_site_option('wpavatar_cravatar_route', 'cravatar.com'), 'cravatar.cn'); ?>><?php _e('默认线路 (cravatar.com)', 'wpavatar'); ?></option>
+                                        <option value="cn.cravatar.com" <?php selected(get_site_option('wpavatar_cravatar_route', 'cravatar.com'), 'cn.cravatar.com'); ?>><?php _e('中国 (cn.cravatar.com)', 'wpavatar'); ?></option>
+                                        <option value="hk.cravatar.com" <?php selected(get_site_option('wpavatar_cravatar_route', 'cravatar.com'), 'hk.cravatar.com'); ?>><?php _e('香港 (hk.cravatar.com)', 'wpavatar'); ?></option>
+                                        <option value="en.cravatar.com" <?php selected(get_site_option('wpavatar_cravatar_route', 'cravatar.com'), 'en.cravatar.com'); ?>><?php _e('国际 (en.cravatar.com)', 'wpavatar'); ?></option>
+                                    </select>
+                                    <p class="description"><?php _e('选择适合您网站访客的Cravatar线路', 'wpavatar'); ?></p>
+                                </td>
+                            </tr>
+                            <tr class="cdn-option third-party-option" <?php echo get_site_option('wpavatar_cdn_type', 'cravatar_route') !== 'third_party' ? 'style="display:none;"' : ''; ?>>
+                                <th><?php _e('第三方镜像', 'wpavatar'); ?></th>
+                                <td>
+                                    <select name="wpavatar_third_party_mirror" class="wpavatar-select">
+                                        <option value="weavatar.com" <?php selected(get_site_option('wpavatar_third_party_mirror', 'weavatar.com'), 'weavatar.com'); ?>><?php _e('WeAvatar (weavatar.com)', 'wpavatar'); ?></option>
+                                        <option value="libravatar.org" <?php selected(get_site_option('wpavatar_third_party_mirror', 'weavatar.com'), 'libravatar.org'); ?>><?php _e('Libravatar (libravatar.org)', 'wpavatar'); ?></option>
+                                        <option value="gravatar.loli.net" <?php selected(get_site_option('wpavatar_third_party_mirror', 'weavatar.com'), 'gravatar.loli.net'); ?>><?php _e('Loli镜像 (gravatar.loli.net)', 'wpavatar'); ?></option>
+                                        <option value="gravatar.webp.se/avatar" <?php selected(get_site_option('wpavatar_third_party_mirror', 'weavatar.com'), 'gravatar.webp.se/avatar'); ?>><?php _e('Webp源 (gravatar.webp.se)', 'wpavatar'); ?></option>
+                                        <option value="dn-qiniu-avatar.qbox.me/avatar" <?php selected(get_site_option('wpavatar_third_party_mirror', 'weavatar.com'), 'dn-qiniu-avatar.qbox.me/avatar'); ?>><?php _e('七牛镜像 (dn-qiniu-avatar)', 'wpavatar'); ?></option>
+                                        <option value="gravatar.w3tt.com/avatar" <?php selected(get_site_option('wpavatar_third_party_mirror', 'weavatar.com'), 'gravatar.w3tt.com/avatar'); ?>><?php _e('万维网测试小组 (W3TT) ', 'wpavatar'); ?></option>
+                                    </select>
+                                    <p class="description"><?php _e('选择第三方头像镜像站', 'wpavatar'); ?></p>
+                                </td>
+                            </tr>
+                            <tr class="cdn-option custom-cdn-option" <?php echo get_site_option('wpavatar_cdn_type', 'cravatar_route') !== 'custom' ? 'style="display:none;"' : ''; ?>>
+                                <th><?php _e('自定义CDN', 'wpavatar'); ?></th>
+                                <td>
+                                    <input type="text" name="wpavatar_custom_cdn" value="<?php echo esc_attr(get_site_option('wpavatar_custom_cdn', '')); ?>" class="regular-text wpavatar-input">
+                                    <p class="description"><?php _e('输入自定义CDN域名，例如：cdn.example.com', 'wpavatar'); ?></p>
+                                </td>
+                            </tr>
+                            <tr>
+                                <th><?php _e('头像哈希方法', 'wpavatar'); ?></th>
+                                <td>
+                                    <label class="wpavatar-radio">
+                                        <input type="radio" name="wpavatar_hash_method" value="md5" <?php checked(get_site_option('wpavatar_hash_method', 'md5'), 'md5'); ?>>
+                                        <span class="wpavatar-radio-label"><?php _e('MD5 (Cravatar默认)', 'wpavatar'); ?></span>
+                                    </label><br>
+                                    <label class="wpavatar-radio">
+                                        <input type="radio" name="wpavatar_hash_method" value="sha256" <?php checked(get_site_option('wpavatar_hash_method', 'md5'), 'sha256'); ?>>
+                                        <span class="wpavatar-radio-label"><?php _e('SHA256 (Gravatar默认)', 'wpavatar'); ?></span>
+                                    </label>
+                                    <p class="description"><?php _e('选择头像邮箱的哈希方法，Cravatar目前使用MD5，一般Gravatar镜像均为SHA256', 'wpavatar'); ?></p>
+                                    <p class="description hash-method-notice" style="color: #d63638; <?php echo get_site_option('wpavatar_cdn_type', 'cravatar_route') !== 'cravatar_route' ? 'display:none;' : ''; ?>"><?php _e('注意：使用Cravatar服务时，哈希方法将仅使用MD5。', 'wpavatar'); ?></p>
+                                </td>
+                            </tr>
+                            <tr>
+                                <th><?php _e('超时设置', 'wpavatar'); ?></th>
+                                <td>
+                                    <input type="number" name="wpavatar_timeout" value="<?php echo esc_attr(get_site_option('wpavatar_timeout', 5)); ?>" min="1" max="30" class="small-text wpavatar-input">
+                                    <?php _e('秒', 'wpavatar'); ?>
+                                    <p class="description"><?php _e('头像请求的最大等待时间，超过后将使用备用头像', 'wpavatar'); ?></p>
+                                </td>
+                            </tr>
+                        </table>
+
+                        <div class="wpavatar-submit-wrapper">
+                            <button type="submit" class="button button-primary"><?php _e('保存基础设置', 'wpavatar'); ?></button>
+                        </div>
+                    </form>
+                </div>
+
+                <!-- Cache Settings Section -->
+                <div class="wpavatar-section" id="wpavatar-section-cache" style="<?php echo $active_tab !== 'cache' ? 'display: none;' : ''; ?>">
+                    <h2><?php _e('缓存控制', 'wpavatar'); ?></h2>
+                    <p class="wpavatar-section-desc"><?php _e('管理头像缓存设置和操作，应用于所有网络站点。', 'wpavatar'); ?></p>
+
+                    <div class="wpavatar-stats-card">
+                        <h3><?php _e('网络缓存统计', 'wpavatar'); ?></h3>
+                        <div id="cache-stats" class="cache-stats-wrapper"></div>
+                        <div class="wpavatar-action-buttons">
+                            <button type="button" id="check-all-cache" class="button button-secondary"><?php _e('检查所有站点缓存', 'wpavatar'); ?></button>
+                            <button type="button" id="purge-all-cache" class="button button-secondary"><?php _e('清空所有站点缓存', 'wpavatar'); ?></button>
+                        </div>
+                    </div>
+
+                    <form method="post" action="edit.php?action=wpavatar_network_settings" id="wpavatar-cache-form">
+                        <?php wp_nonce_field('wpavatar_network_settings'); ?>
+                        <input type="hidden" name="tab" value="cache">
+
+                        <table class="form-table">
+                            <tr>
+                                <th><?php _e('启用本地缓存', 'wpavatar'); ?></th>
+                                <td>
+                                    <label class="wpavatar-switch">
+                                        <input type="checkbox" name="wpavatar_enable_cache" value="1" <?php checked(get_site_option('wpavatar_enable_cache', 1)); ?>>
+                                        <span class="wpavatar-slider"></span>
+                                        <span class="wpavatar-switch-label"><?php _e('缓存头像到本地服务器', 'wpavatar'); ?></span>
+                                    </label>
+                                    <p class="description"><?php _e('将头像缓存到本地可以减少外部请求，提高网站加载速度', 'wpavatar'); ?></p>
+                                </td>
+                            </tr>
+                            <tr>
+                                <th><?php _e('缓存根目录', 'wpavatar'); ?></th>
+                                <td>
+                                    <input type="text" name="wpavatar_cache_path" value="<?php echo esc_attr(get_site_option('wpavatar_cache_path', WPAVATAR_CACHE_DIR)); ?>" class="regular-text wpavatar-input">
+                                    <p class="description"><?php _e('确保目录可写，每个站点将在此目录下创建独立的子目录', 'wpavatar'); ?></p>
+                                </td>
+                            </tr>
+                            <tr>
+                                <th><?php _e('缓存过期时间', 'wpavatar'); ?></th>
+                                <td>
+                                    <input type="number" name="wpavatar_cache_expire" value="<?php echo esc_attr(get_site_option('wpavatar_cache_expire', 15)); ?>" min="1" max="90" class="small-text wpavatar-input">
+                                    <?php _e('天', 'wpavatar'); ?>
+                                    <p class="description"><?php _e('头像缓存的有效期，过期后将重新获取', 'wpavatar'); ?></p>
+                                </td>
+                            </tr>
+                        </table>
+
+                        <div class="wpavatar-submit-wrapper">
+                            <button type="submit" class="button button-primary"><?php _e('保存缓存设置', 'wpavatar'); ?></button>
+                        </div>
+                    </form>
+                </div>
+
+                <!-- Advanced Settings Section -->
+                <div class="wpavatar-section" id="wpavatar-section-advanced" style="<?php echo $active_tab !== 'advanced' ? 'display: none;' : ''; ?>">
+                    <h2><?php _e('高级设置', 'wpavatar'); ?></h2>
+                    <p class="wpavatar-section-desc"><?php _e('配置头像的SEO和备用方案，应用于所有网络站点。', 'wpavatar'); ?></p>
+
+                    <form method="post" action="edit.php?action=wpavatar_network_settings" id="wpavatar-advanced-form">
+                        <?php wp_nonce_field('wpavatar_network_settings'); ?>
+                        <input type="hidden" name="tab" value="advanced">
+
+                        <table class="form-table">
+                            <tr>
+                                <th><?php _e('SEO替代文本', 'wpavatar'); ?></th>
+                                <td>
+                                    <input type="text" name="wpavatar_seo_alt" value="<?php echo esc_attr(get_site_option('wpavatar_seo_alt', '%s的头像')); ?>" class="regular-text wpavatar-input">
+                                    <p class="description"><?php _e('头像的ALT文本，%s将被替换为用户名', 'wpavatar'); ?></p>
+                                </td>
+                            </tr>
+                            <tr>
+                                <th><?php _e('头像加载失败处理', 'wpavatar'); ?></th>
+                                <td>
+                                    <label class="wpavatar-switch">
+                                        <input type="checkbox" name="wpavatar_fallback_mode" value="1" <?php checked(get_site_option('wpavatar_fallback_mode', 1)); ?>>
+                                        <span class="wpavatar-slider"></span>
+                                        <span class="wpavatar-switch-label"><?php _e('启用备用头像', 'wpavatar'); ?></span>
+                                    </label>
+                                    <p class="description"><?php _e('当头像服务器无法访问或加载超时时，自动使用本地备用头像，避免拖慢网站加载速度', 'wpavatar'); ?></p>
+                                </td>
+                            </tr>
+                            <tr>
+                                <th><?php _e('备用头像选择', 'wpavatar'); ?></th>
+                                <td>
+                                    <div class="default-avatar-options">
+                                        <?php
+                                        $local_avatars = \WPAvatar\Cravatar::get_local_avatars();
+                                        $fallback_avatar = get_site_option('wpavatar_fallback_avatar', 'default');
+
+                                        foreach ($local_avatars as $key => $avatar) :
+                                        ?>
+                                        <label>
+                                            <input type="radio" name="wpavatar_fallback_avatar" value="<?php echo esc_attr($key); ?>" <?php checked($fallback_avatar, $key); ?>>
+                                            <img src="<?php echo esc_url($avatar['url']); ?>" alt="<?php echo esc_attr($avatar['name']); ?>" width="48" height="48">
+                                            <span class="avatar-option-name"><?php echo esc_html($avatar['name']); ?></span>
+                                        </label>
+                                        <?php endforeach; ?>
+                                    </div>
+                                    <p class="description"><?php _e('选择您的故障备用头像', 'wpavatar'); ?></p>
+                                </td>
+                            </tr>
+                        </table>
+
+                        <div class="wpavatar-submit-wrapper">
+                            <button type="submit" class="button button-primary"><?php _e('保存高级设置', 'wpavatar'); ?></button>
+                        </div>
+                    </form>
+                </div>
+
+                <!-- Shortcode Settings Section -->
+                <div class="wpavatar-section" id="wpavatar-section-shortcodes" style="<?php echo $active_tab !== 'shortcodes' ? 'display: none;' : ''; ?>">
+                    <h2><?php _e('简码设置', 'wpavatar'); ?></h2>
+                    <p class="wpavatar-section-desc"><?php _e('配置头像简码的默认参数，应用于所有网络站点。', 'wpavatar'); ?></p>
+
+                    <div class="wpavatar-preview-container">
+                        <h3><?php _e('头像预览', 'wpavatar'); ?></h3>
+                        <div class="wpavatar-preview-wrapper">
+                            <div class="wpavatar-preview-item">
+                                <h4><?php _e('方形', 'wpavatar'); ?></h4>
+                                <?php echo \WPAvatar\Shortcode::generate_preview(get_current_user_id(), 'square', 80); ?>
+                            </div>
+                            <div class="wpavatar-preview-item">
+                                <h4><?php _e('圆角', 'wpavatar'); ?></h4>
+                                <?php echo \WPAvatar\Shortcode::generate_preview(get_current_user_id(), 'rounded', 80); ?>
+                            </div>
+                            <div class="wpavatar-preview-item">
+                                <h4><?php _e('圆形', 'wpavatar'); ?></h4>
+                                <?php echo \WPAvatar\Shortcode::generate_preview(get_current_user_id(), 'circle', 80); ?>
+                            </div>
+                        </div>
+                        <p class="description"><?php _e('预览使用当前登录账户的头像', 'wpavatar'); ?></p>
+                    </div>
+
+                    <form method="post" action="edit.php?action=wpavatar_network_settings" id="wpavatar-shortcodes-form">
+                        <?php wp_nonce_field('wpavatar_network_settings'); ?>
+                        <input type="hidden" name="tab" value="shortcodes">
+
+                        <table class="form-table">
+                            <tr>
+                                <th><?php _e('默认头像大小', 'wpavatar'); ?></th>
+                                <td>
+                                    <input type="number" name="wpavatar_shortcode_size" value="<?php echo esc_attr(get_site_option('wpavatar_shortcode_size', 96)); ?>" min="16" max="512" class="small-text wpavatar-input">
+                                    <p class="description"><?php _e('简码默认头像大小（像素）', 'wpavatar'); ?></p>
+                                </td>
+                            </tr>
+                            <tr>
+                                <th><?php _e('默认CSS类名', 'wpavatar'); ?></th>
+                                <td>
+                                    <input type="text" name="wpavatar_shortcode_class" value="<?php echo esc_attr(get_site_option('wpavatar_shortcode_class', 'wpavatar')); ?>" class="regular-text wpavatar-input">
+                                    <p class="description"><?php _e('简码生成的头像默认CSS类', 'wpavatar'); ?></p>
+                                </td>
+                            </tr>
+                            <tr>
+                                <th><?php _e('默认头像形状', 'wpavatar'); ?></th>
+                                <td>
+                                    <select name="wpavatar_shortcode_shape" class="wpavatar-select">
+                                        <option value="square" <?php selected(get_site_option('wpavatar_shortcode_shape', 'square'), 'square'); ?>><?php _e('方形', 'wpavatar'); ?></option>
+                                        <option value="rounded" <?php selected(get_site_option('wpavatar_shortcode_shape', 'square'), 'rounded'); ?>><?php _e('圆角方形', 'wpavatar'); ?></option>
+                                        <option value="circle" <?php selected(get_site_option('wpavatar_shortcode_shape', 'square'), 'circle'); ?>><?php _e('圆形', 'wpavatar'); ?></option>
+                                    </select>
+                                    <p class="description"><?php _e('简码生成的头像默认形状', 'wpavatar'); ?></p>
+                                </td>
+                            </tr>
+                        </table>
+
+                        <div class="wpavatar-submit-wrapper">
+                            <button type="submit" class="button button-primary"><?php _e('保存简码设置', 'wpavatar'); ?></button>
+                        </div>
+                    </form>
+                </div>
+
+                <!-- Tools Section -->
+                <div class="wpavatar-section" id="wpavatar-section-tools" style="<?php echo $active_tab !== 'tools' ? 'display: none;' : ''; ?>">
+                    <h2><?php _e('工具', 'wpavatar'); ?></h2>
+                    <p class="wpavatar-section-desc"><?php _e('网络管理工具和操作。', 'wpavatar'); ?></p>
+
+                    <div class="wpavatar-card tools-card">
+                        <h3><?php _e('从站点导入设置', 'wpavatar'); ?></h3>
+                        <p><?php _e('将网络中的任意站点的WPAvatar设置导入为网络默认设置。', 'wpavatar'); ?></p>
+
+                        <form method="post" action="edit.php?action=wpavatar_import_site_settings" id="wpavatar-import-site-form">
+                            <?php wp_nonce_field('wpavatar_import_site_settings'); ?>
+
+                            <select name="import_blog_id" class="wpavatar-select">
+                                <?php
+                                $sites = get_sites(array('number' => 100));
+                                foreach ($sites as $site) {
+                                    switch_to_blog($site->blog_id);
+                                    $blog_name = get_bloginfo('name');
+                                    restore_current_blog();
+
+                                    echo '<option value="' . esc_attr($site->blog_id) . '">' .
+                                         esc_html($blog_name) . ' (' . esc_html($site->domain . $site->path) . ')</option>';
+                                }
+                                ?>
+                            </select>
+
+                            <div class="wpavatar-submit-wrapper" style="padding-top:10px; border-top:none;">
+                                <button type="submit" class="button button-primary" id="import-site-settings"><?php _e('导入设置', 'wpavatar'); ?></button>
+                            </div>
+                        </form>
+                    </div>
+
+                    <div class="wpavatar-card tools-card">
+                        <h3><?php _e('批量操作', 'wpavatar'); ?></h3>
+                        <p><?php _e('对网络中的所有站点进行批量操作。', 'wpavatar'); ?></p>
+
+                        <form method="post" action="edit.php?action=wpavatar_apply_to_all_sites" id="wpavatar-bulk-action-form">
+                            <?php wp_nonce_field('wpavatar_apply_to_all_sites'); ?>
+
+                            <p><strong><?php _e('将当前网络设置应用到所有站点', 'wpavatar'); ?></strong></p>
+                            <p class="description"><?php _e('这将覆盖每个站点的现有设置，使其与网络设置保持一致。', 'wpavatar'); ?></p>
+
+                            <div class="wpavatar-submit-wrapper" style="padding-top:10px; border-top:none;">
+                                <button type="submit" class="button button-primary" id="apply-to-all-sites"><?php _e('应用到所有站点', 'wpavatar'); ?></button>
+                            </div>
+                        </form>
+                    </div>
+                </div>
+            </div>
+        </div>
+
+        <style>
+        .network-control-options {
+            display: flex;
+            flex-wrap: wrap;
+            gap: 20px;
+            margin-bottom: 15px;
+        }
+        .option-group {
+            flex: 1;
+            min-width: 200px;
+            background: #f9f9f9;
+            padding: 10px 15px;
+            border-radius: 5px;
+        }
+        .option-group h4 {
+            margin-top: 0;
+            margin-bottom: 10px;
+            padding-bottom: 5px;
+            border-bottom: 1px solid #eee;
+        }
+        .wpavatar-checkbox {
+            display: flex;
+            align-items: center;
+            margin-bottom: 8px;
+        }
+        .wpavatar-checkbox-label {
+            margin-left: 8px;
+        }
+        .tools-card {
+            margin-bottom: 20px;
+        }
+        @media (max-width: 782px) {
+            .network-control-options {
+                flex-direction: column;
+            }
+        }
+        </style>
+        <script>
+        jQuery(document).ready(function($) {
+            // Select/deselect all network controlled options
+            $('#select-all-options').on('click', function() {
+                $('input[name="wpavatar_network_controlled_options[]"]').prop('checked', true);
+            });
+
+            $('#deselect-all-options').on('click', function() {
+                $('input[name="wpavatar_network_controlled_options[]"]').prop('checked', false);
+            });
+
+            $('#reset-default-options').on('click', function() {
+                if (confirm(wpavatar_l10n.confirm_reset)) {
+                    var defaultOptions = ['wpavatar_enable_cravatar', 'wpavatar_cdn_type', 'wpavatar_cravatar_route', 'wpavatar_third_party_mirror', 'wpavatar_custom_cdn'];
+
+                    $('input[name="wpavatar_network_controlled_options[]"]').each(function() {
+                        $(this).prop('checked', defaultOptions.indexOf($(this).val()) !== -1);
+                    });
+                }
+            });
+
+            // Network cache management
+            $('#check-all-cache').on('click', function() {
+                var $button = $(this);
+                var $stats = $('#cache-stats');
+
+                $button.prop('disabled', true).text(wpavatar_l10n.checking);
+                $stats.html('<p>' + wpavatar_l10n.checking_status + '</p>');
+
+                $.ajax({
+                    type: 'POST',
+                    url: wpavatar.ajaxurl,
+                    data: {
+                        action: 'wpavatar_check_all_cache',
+                        nonce: wpavatar.nonce
+                    },
+                    success: function(response) {
+                        if (response.success) {
+                            $stats.html(response.data);
+                        } else {
+                            $stats.html('<div class="error"><p>' + (response.data || wpavatar_l10n.check_failed) + '</p></div>');
+                        }
+                    },
+                    error: function() {
+                        $stats.html('<div class="error"><p>' + wpavatar_l10n.request_failed + '</p></div>');
+                    },
+                    complete: function() {
+                        $button.prop('disabled', false).text('<?php _e('检查所有站点缓存', 'wpavatar'); ?>');
+                    }
+                });
+            });
+
+            $('#purge-all-cache').on('click', function() {
+                var $button = $(this);
+                var $stats = $('#cache-stats');
+                var $status = $('#wpavatar-status');
+
+                if (!confirm(wpavatar_l10n.confirm_purge)) {
+                    return;
+                }
+
+                $button.prop('disabled', true).text(wpavatar_l10n.purging);
+                $stats.html('<p>' + wpavatar_l10n.purging_cache + '</p>');
+
+                $.ajax({
+                    type: 'POST',
+                    url: wpavatar.ajaxurl,
+                    data: {
+                        action: 'wpavatar_purge_all_cache',
+                        nonce: wpavatar.nonce
+                    },
+                    success: function(response) {
+                        if (response.success) {
+                            $status.removeClass('notice-error')
+                                   .addClass('notice-success')
+                                   .text(response.data)
+                                   .show()
+                                   .delay(3000)
+                                   .fadeOut();
+
+                            setTimeout(function() {
+                                $('#check-all-cache').trigger('click');
+                            }, 1000);
+                        } else {
+                            $status.removeClass('notice-success')
+                                   .addClass('notice-error')
+                                   .text(response.data || wpavatar_l10n.purge_failed)
+                                   .show();
+                        }
+                    },
+                    error: function() {
+                        $status.removeClass('notice-success')
+                               .addClass('notice-error')
+                               .text(wpavatar_l10n.request_failed)
+                               .show();
+                    },
+                    complete: function() {
+                        $button.prop('disabled', false).text('<?php _e('清空所有站点缓存', 'wpavatar'); ?>');
+                    }
+                });
+            });
+
+            // Import site settings confirmation
+            $('#import-site-settings').on('click', function(e) {
+                if (!confirm(wpavatar_l10n.confirm_import)) {
+                    e.preventDefault();
+                    return false;
+                }
+                return true;
+            });
+
+            // Apply to all sites confirmation
+            $('#apply-to-all-sites').on('click', function(e) {
+                if (!confirm('<?php _e('确定要将网络设置应用到所有站点吗？此操作将覆盖每个站点的现有设置。', 'wpavatar'); ?>')) {
+                    e.preventDefault();
+                    return false;
+                }
+                return true;
+            });
+
+            // Check cache stats on load if on cache tab
+            if ($('#wpavatar-section-cache').is(':visible')) {
+                setTimeout(function() {
+                    $('#check-all-cache').trigger('click');
+                }, 300);
+            }
+        });
+        </script>
+        <?php
+    }
+
+    /**
+     * Save network settings
+     */
+    public static function save_network_settings() {
+        if (!current_user_can('manage_network_options')) {
+            wp_die(__('您没有足够权限修改这些设置。', 'wpavatar'));
+            return;
+        }
+
+        // Verify nonce
+        check_admin_referer('wpavatar_network_settings');
+
+        // Get the current tab
+        $current_tab = isset($_POST['tab']) ? sanitize_text_field($_POST['tab']) : '';
+
+        // Process network management settings
+        if ($current_tab === 'network') {
+            // Network management settings
+            update_site_option('wpavatar_network_enabled', isset($_POST['wpavatar_network_enabled']) ? 1 : 0);
+            update_site_option('wpavatar_network_enforce', isset($_POST['wpavatar_network_enforce']) ? 1 : 0);
+
+            // Network controlled options
+            $controlled_options = isset($_POST['wpavatar_network_controlled_options']) ? $_POST['wpavatar_network_controlled_options'] : array();
+            update_site_option('wpavatar_network_controlled_options', $controlled_options);
+        }
+
+        // Process basic settings
+        if ($current_tab === 'basic') {
+            update_site_option('wpavatar_enable_cravatar', isset($_POST['wpavatar_enable_cravatar']) ? 1 : 0);
+            update_site_option('wpavatar_cdn_type', sanitize_text_field($_POST['wpavatar_cdn_type'] ?? 'cravatar_route'));
+            update_site_option('wpavatar_cravatar_route', sanitize_text_field($_POST['wpavatar_cravatar_route'] ?? 'cravatar.com'));
+            update_site_option('wpavatar_third_party_mirror', sanitize_text_field($_POST['wpavatar_third_party_mirror'] ?? 'weavatar.com'));
+            update_site_option('wpavatar_custom_cdn', sanitize_text_field($_POST['wpavatar_custom_cdn'] ?? ''));
+            update_site_option('wpavatar_hash_method', sanitize_text_field($_POST['wpavatar_hash_method'] ?? 'md5'));
+            update_site_option('wpavatar_timeout', intval($_POST['wpavatar_timeout'] ?? 5));
+        }
+
+        // Process cache settings
+        if ($current_tab === 'cache') {
+            update_site_option('wpavatar_enable_cache', isset($_POST['wpavatar_enable_cache']) ? 1 : 0);
+
+            // Sanitize cache path
+            $cache_path = sanitize_text_field($_POST['wpavatar_cache_path'] ?? WPAVATAR_CACHE_DIR);
+            $cache_path = rtrim($cache_path, '/\\') . '/';
+
+            if (!preg_match('~^(?:/|\\\\|[a-zA-Z]:)~', $cache_path)) {
+                $cache_path = WP_CONTENT_DIR . '/' . ltrim($cache_path, '/\\');
+            }
+
+            if (!file_exists($cache_path)) {
+                if (!wp_mkdir_p($cache_path)) {
+                    add_settings_error(
+                        'wpavatar_cache',
+                        'cache_path_invalid',
+                        __('无法创建缓存目录，请检查权限', 'wpavatar'),
+                        'error'
+                    );
+                }
+            } elseif (!is_dir($cache_path)) {
+                add_settings_error(
+                    'wpavatar_cache',
+                    'cache_path_invalid',
+                    __('指定的路径不是有效目录', 'wpavatar'),
+                    'error'
+                );
+            } elseif (!is_writable($cache_path)) {
+                add_settings_error(
+                    'wpavatar_cache',
+                    'cache_path_invalid',
+                    __('缓存目录不可写，请检查权限', 'wpavatar'),
+                    'error'
+                );
+            } else {
+                // Valid cache path, create index.php if it doesn't exist
+                $index_file = $cache_path . 'index.php';
+                if (!file_exists($index_file)) {
+                    @file_put_contents($index_file, '<?php // Silence is golden.');
+                }
+
+                update_site_option('wpavatar_cache_path', $cache_path);
+            }
+
+            update_site_option('wpavatar_cache_expire', intval($_POST['wpavatar_cache_expire'] ?? 15));
+        }
+
+        // Process advanced settings
+        if ($current_tab === 'advanced') {
+            update_site_option('wpavatar_seo_alt', sanitize_text_field($_POST['wpavatar_seo_alt'] ?? '%s的头像'));
+            update_site_option('wpavatar_fallback_mode', isset($_POST['wpavatar_fallback_mode']) ? 1 : 0);
+            update_site_option('wpavatar_fallback_avatar', sanitize_text_field($_POST['wpavatar_fallback_avatar'] ?? 'default'));
+        }
+
+        // Process shortcode settings
+        if ($current_tab === 'shortcodes') {
+            update_site_option('wpavatar_shortcode_size', intval($_POST['wpavatar_shortcode_size'] ?? 96));
+            update_site_option('wpavatar_shortcode_class', sanitize_text_field($_POST['wpavatar_shortcode_class'] ?? 'wpavatar'));
+            update_site_option('wpavatar_shortcode_shape', sanitize_text_field($_POST['wpavatar_shortcode_shape'] ?? 'square'));
+        }
+
+        // Redirect back to the appropriate page with update message
+        $redirect_url = add_query_arg([
+            'page' => 'wpavatar-network',
+            'updated' => 'true'
+        ], network_admin_url('settings.php'));
+
+        // Add the tab if it exists
+        if (!empty($current_tab)) {
+            $redirect_url = add_query_arg('tab', $current_tab, $redirect_url);
+        }
+
+        wp_redirect($redirect_url);
+        exit;
+    }
+
+    /**
+     * Import settings from a site to network settings
+     */
+    public static function import_site_settings() {
+        if (!isset($_POST['import_blog_id']) || !current_user_can('manage_network_options')) {
+            wp_die(__('无效的请求或权限不足。', 'wpavatar'));
+            return;
+        }
+
+        check_admin_referer('wpavatar_import_site_settings');
+
+        $blog_id = intval($_POST['import_blog_id']);
+        if ($blog_id <= 0) {
+            wp_die(__('无效的站点ID。', 'wpavatar'));
+            return;
+        }
+
+        // Switch to the selected blog to get its settings
+        switch_to_blog($blog_id);
+
+        // List of all options we want to import
+        $options_to_import = [
+            'wpavatar_enable_cravatar',
+            'wpavatar_cdn_type',
+            'wpavatar_cravatar_route',
+            'wpavatar_third_party_mirror',
+            'wpavatar_custom_cdn',
+            'wpavatar_hash_method',
+            'wpavatar_timeout',
+            'wpavatar_enable_cache',
+            'wpavatar_cache_path',
+            'wpavatar_cache_expire',
+            'wpavatar_seo_alt',
+            'wpavatar_fallback_mode',
+            'wpavatar_fallback_avatar',
+            'wpavatar_shortcode_size',
+            'wpavatar_shortcode_class',
+            'wpavatar_shortcode_shape'
+        ];
+
+        // Copy options from site to network
+        foreach ($options_to_import as $option) {
+            $value = get_option($option);
+            if ($value !== false) {
+                update_site_option($option, $value);
+            }
+        }
+
+        restore_current_blog();
+
+        // Redirect back with success message
+        wp_redirect(add_query_arg([
+            'page' => 'wpavatar-network',
+            'tab' => 'tools',
+            'imported' => 'true'
+        ], network_admin_url('settings.php')));
+
+        exit;
+    }
+
+    /**
+     * Apply network settings to all sites
+     */
+    public static function apply_to_all_sites() {
+        if (!current_user_can('manage_network_options')) {
+            wp_die(__('权限不足。', 'wpavatar'));
+            return;
+        }
+
+        check_admin_referer('wpavatar_apply_to_all_sites');
+
+        // Get list of all sites
+        $sites = get_sites(array('number' => 500)); // Limit to 500 sites for performance
+
+        // Get network-controlled options
+        $controlled_options = get_site_option('wpavatar_network_controlled_options', self::$default_controlled_options);
+        if (!is_array($controlled_options)) {
+            $controlled_options = explode(',', $controlled_options);
+        }
+
+        // Apply settings to each site
+        foreach ($sites as $site) {
+            switch_to_blog($site->blog_id);
+
+            // Apply all options in the controlled list
+            foreach ($controlled_options as $option) {
+                $network_value = get_site_option($option);
+                if ($network_value !== false) {
+                    update_option($option, $network_value);
+                }
+            }
+
+            // Ensure site cache directory exists
+            $cache_base = get_site_option('wpavatar_cache_path', WPAVATAR_CACHE_DIR);
+            $site_cache_dir = trailingslashit($cache_base) . 'site-' . $site->blog_id;
+
+            if (!file_exists($site_cache_dir)) {
+                wp_mkdir_p($site_cache_dir);
+
+                // Create index.php
+                $index_file = $site_cache_dir . '/index.php';
+                if (!file_exists($index_file)) {
+                    @file_put_contents($index_file, '<?php // Silence is golden.');
+                }
+            }
+
+            restore_current_blog();
+        }
+
+        // Redirect back with success message
+        wp_redirect(add_query_arg([
+            'page' => 'wpavatar-network',
+            'tab' => 'tools',
+            'applied' => 'true'
+        ], network_admin_url('settings.php')));
+
+        exit;
+    }
+}
+
+// Add actions for tools
+add_action('network_admin_edit_wpavatar_import_site_settings', ['\WPAvatar\Network', 'import_site_settings']);
+add_action('network_admin_edit_wpavatar_apply_to_all_sites', ['\WPAvatar\Network', 'apply_to_all_sites']);
diff --git a/wpavatar.php b/wpavatar.php
index d495577..819a6d6 100644
--- a/wpavatar.php
+++ b/wpavatar.php
@@ -1,22 +1,24 @@
 <?php
 /**
  * Plugin Name: WPAvatar
- * Version: 1.6.3
+ * Version: 1.8.1
  * Plugin URI: https://wpavatar.com/download
  * Description: Replace Gravatar with Cravatar, a perfect replacement of Gravatar in China.
  * Author: WPfanyi
  * Author URI: https://wpfanyi.com/
  * Text Domain: wpavatar
  * Domain Path: /languages
+ * Network: true
  */
 
 defined('ABSPATH') || exit;
 
-define('WPAVATAR_VERSION', '1.6.3');
+define('WPAVATAR_VERSION', '1.8.0');
 define('WPAVATAR_PLUGIN_DIR', plugin_dir_path(__FILE__));
 define('WPAVATAR_PLUGIN_URL', plugin_dir_url(__FILE__));
 define('WPAVATAR_CACHE_DIR', WP_CONTENT_DIR . '/uploads/cravatar');
 
+// Create necessary plugin directories if they don't exist
 if (!file_exists(WPAVATAR_PLUGIN_DIR . 'assets')) {
     wp_mkdir_p(WPAVATAR_PLUGIN_DIR . 'assets');
 }
@@ -55,19 +57,31 @@ if (!file_exists(WPAVATAR_PLUGIN_DIR . 'includes')) {
     }
 }
 
+// Include core files
 require_once WPAVATAR_PLUGIN_DIR . 'includes/core.php';
 require_once WPAVATAR_PLUGIN_DIR . 'includes/admin.php';
+require_once WPAVATAR_PLUGIN_DIR . 'includes/multisite.php';
 
+// Register AJAX actions
 add_action('wp_ajax_wpavatar_purge_cache', 'wpavatar_purge_cache_ajax');
 function wpavatar_purge_cache_ajax() {
     check_ajax_referer('wpavatar_admin_nonce', 'nonce');
 
+    // Check user capability
     if (!current_user_can('manage_options')) {
         wp_send_json_error(__('权限不足', 'wpavatar'));
         return;
     }
 
-    $dir = get_option('wpavatar_cache_path', WPAVATAR_CACHE_DIR);
+    // Get cache directory path
+    $dir = wpavatar_get_option('wpavatar_cache_path', WPAVATAR_CACHE_DIR);
+
+    // Add blog-specific directory if multisite
+    if (is_multisite()) {
+        $blog_id = get_current_blog_id();
+        $dir = trailingslashit($dir) . 'site-' . $blog_id . '/';
+    }
+
     $dir = rtrim($dir, '/\\') . '/';
 
     if (!file_exists($dir) || !is_dir($dir)) {
@@ -91,6 +105,60 @@ function wpavatar_purge_cache_ajax() {
     wp_send_json_success(sprintf(__('已清空 %d 个缓存文件', 'wpavatar'), $count));
 }
 
+add_action('wp_ajax_wpavatar_purge_all_cache', 'wpavatar_purge_all_cache_ajax');
+function wpavatar_purge_all_cache_ajax() {
+    check_ajax_referer('wpavatar_admin_nonce', 'nonce');
+
+    // Check user capability for network admin
+    if (!current_user_can('manage_network_options')) {
+        wp_send_json_error(__('权限不足', 'wpavatar'));
+        return;
+    }
+
+    // Get base cache directory path
+    $base_dir = wpavatar_get_option('wpavatar_cache_path', WPAVATAR_CACHE_DIR);
+    $base_dir = rtrim($base_dir, '/\\') . '/';
+
+    if (!file_exists($base_dir) || !is_dir($base_dir)) {
+        wp_send_json_error(__('缓存目录不存在', 'wpavatar'));
+        return;
+    }
+
+    $count = 0;
+
+    // Get all site cache directories
+    $site_dirs = glob($base_dir . 'site-*', GLOB_ONLYDIR);
+
+    if ($site_dirs) {
+        foreach ($site_dirs as $site_dir) {
+            $files = glob($site_dir . '/*.jpg');
+            if ($files) {
+                foreach ($files as $file) {
+                    if (file_exists($file)) {
+                        if (@unlink($file)) {
+                            $count++;
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    // Also check legacy non-site specific files
+    $legacy_files = glob($base_dir . '*.jpg');
+    if ($legacy_files) {
+        foreach ($legacy_files as $file) {
+            if (file_exists($file)) {
+                if (@unlink($file)) {
+                    $count++;
+                }
+            }
+        }
+    }
+
+    wp_send_json_success(sprintf(__('已清空所有站点的 %d 个缓存文件', 'wpavatar'), $count));
+}
+
 add_action('wp_ajax_wpavatar_check_cache', 'wpavatar_check_cache_ajax');
 function wpavatar_check_cache_ajax() {
     check_ajax_referer('wpavatar_admin_nonce', 'nonce');
@@ -104,9 +172,24 @@ function wpavatar_check_cache_ajax() {
     wp_send_json_success($result);
 }
 
+add_action('wp_ajax_wpavatar_check_all_cache', 'wpavatar_check_all_cache_ajax');
+function wpavatar_check_all_cache_ajax() {
+    check_ajax_referer('wpavatar_admin_nonce', 'nonce');
+
+    if (!current_user_can('manage_network_options')) {
+        wp_send_json_error(__('权限不足', 'wpavatar'));
+        return;
+    }
+
+    $result = \WPAvatar\Cache::check_all_cache_status();
+    wp_send_json_success($result);
+}
+
 add_action('plugins_loaded', function () {
+    // Load text domain for translations
     load_plugin_textdomain('wpavatar', false, dirname(plugin_basename(__FILE__)) . '/languages');
 
+    // Create default avatar if it doesn't exist
     $default_avatar = WPAVATAR_PLUGIN_DIR . 'assets/images/default-avatar.png';
     if (!file_exists($default_avatar)) {
         $placeholder = WPAVATAR_PLUGIN_DIR . 'assets/images/placeholder-avatar.png';
@@ -127,6 +210,7 @@ add_action('plugins_loaded', function () {
         }
     }
 
+    // Fetch Cravatar logo if it doesn't exist
     $cravatar_logo = WPAVATAR_PLUGIN_DIR . 'assets/images/cravatar-logo.png';
     if (!file_exists($cravatar_logo) && function_exists('file_get_contents')) {
         $logo_url = 'https://cn.cravatar.com/avatar/00000000000000000000000000000000?d=cravatar_logo';
@@ -137,25 +221,49 @@ add_action('plugins_loaded', function () {
         }
     }
 
+    // Initialize multisite network support first
     if (is_multisite()) {
         \WPAvatar\Network::init();
     }
 
+    // Initialize core components
     \WPAvatar\Core::init();
     \WPAvatar\Cravatar::init();
     \WPAvatar\Cache::init();
     \WPAvatar\Shortcode::init();
 
+    // Initialize admin settings (will be conditionally disabled in multisite if network managed)
     if (is_admin()) {
-        \WPAvatar\Settings::init();
+        // Check if we should initialize settings in site admin
+        $should_init_settings = true;
+
+        if (is_multisite() && get_site_option('wpavatar_network_enforce', 0) && !is_network_admin()) {
+            $should_init_settings = false;
+        }
+
+        if ($should_init_settings) {
+            \WPAvatar\Settings::init();
+        }
     }
 
+    // Filter text to replace Gravatar references with Cravatar
     add_filter('gettext', 'wpavatar_replace_gravatar_text', 20, 3);
     add_filter('ngettext', 'wpavatar_replace_gravatar_text_plural', 20, 4);
 });
 
+/**
+ * Replace Gravatar text with Cravatar in translations
+ *
+ * @param string $translated_text Translated text
+ * @param string $text Original text
+ * @param string $domain Text domain
+ * @return string Modified translated text
+ */
 function wpavatar_replace_gravatar_text($translated_text, $text, $domain) {
-    if (!get_option('wpavatar_enable_cravatar', 1)) {
+    // Get enable_cravatar setting
+    $enable_cravatar = wpavatar_get_option('wpavatar_enable_cravatar', 1);
+
+    if (!$enable_cravatar) {
         return $translated_text;
     }
 
@@ -179,8 +287,20 @@ function wpavatar_replace_gravatar_text($translated_text, $text, $domain) {
     return $translated_text;
 }
 
+/**
+ * Replace Gravatar text with Cravatar in plural translations
+ *
+ * @param string $translated_text Translated text
+ * @param string $single Singular text
+ * @param string $plural Plural text
+ * @param int $number Number for plural form
+ * @return string Modified translated text
+ */
 function wpavatar_replace_gravatar_text_plural($translated_text, $single, $plural, $number) {
-    if (!get_option('wpavatar_enable_cravatar', 1)) {
+    // Get enable_cravatar setting
+    $enable_cravatar = wpavatar_get_option('wpavatar_enable_cravatar', 1);
+
+    if (!$enable_cravatar) {
         return $translated_text;
     }
 
@@ -202,7 +322,39 @@ function wpavatar_replace_gravatar_text_plural($translated_text, $single, $plura
     return $translated_text;
 }
 
+/**
+ * Helper function to get the correct option based on multisite status
+ *
+ * @param string $option_name Option name
+ * @param mixed $default Default value
+ * @return mixed Option value
+ */
+function wpavatar_get_option($option_name, $default = false) {
+    if (is_multisite()) {
+        // Check if network settings are enabled
+        if (get_site_option('wpavatar_network_enabled', 1)) {
+            // Check if this option is controlled by network
+            $network_controlled_options = get_site_option('wpavatar_network_controlled_options', array());
+
+            // Convert to array if it's a string (for backward compatibility)
+            if (!is_array($network_controlled_options)) {
+                $network_controlled_options = explode(',', $network_controlled_options);
+            }
+
+            // If this option is controlled by network or network enforces all settings
+            if (in_array($option_name, $network_controlled_options) || get_site_option('wpavatar_network_enforce', 0)) {
+                return get_site_option($option_name, $default);
+            }
+        }
+    }
+
+    // Default to site option
+    return get_option($option_name, $default);
+}
+
+// Register activation hook
 register_activation_hook(__FILE__, function() {
+    // Set default options for single site
     add_option('wpavatar_enable_cravatar', 1);
     add_option('wpavatar_cdn_type', 'cravatar_route');
     add_option('wpavatar_cravatar_route', 'cravatar.com');
@@ -223,13 +375,16 @@ register_activation_hook(__FILE__, function() {
     add_option('wpavatar_shortcode_class', 'wpavatar');
     add_option('wpavatar_shortcode_shape', 'square');
 
+    // Create cache directory
     wp_mkdir_p(WPAVATAR_CACHE_DIR);
 
+    // Create index.php to prevent directory listing
     $index_file = rtrim(WPAVATAR_CACHE_DIR, '/\\') . '/index.php';
     if (!file_exists($index_file)) {
         @file_put_contents($index_file, '<?php // Silence is golden.');
     }
 
+    // Create .htaccess to configure cache
     $htaccess_file = rtrim(WPAVATAR_CACHE_DIR, '/\\') . '/.htaccess';
     if (!file_exists($htaccess_file)) {
         $htaccess_content = "# Prevent directory listing\n";
@@ -242,17 +397,127 @@ register_activation_hook(__FILE__, function() {
         @file_put_contents($htaccess_file, $htaccess_content);
     }
 
+    // Set default options for multisite
     if (is_multisite()) {
+        // Network settings
         add_site_option('wpavatar_network_enabled', 1);
-        add_site_option('wpavatar_network_cdn_type', 'cravatar_route');
-        add_site_option('wpavatar_network_cravatar_route', 'cravatar.com');
+        add_site_option('wpavatar_network_enforce', 0);
+
+        // Define default network controlled options
+        $default_controlled = array(
+            'wpavatar_enable_cravatar',
+            'wpavatar_cdn_type',
+            'wpavatar_cravatar_route',
+            'wpavatar_third_party_mirror',
+            'wpavatar_custom_cdn'
+        );
+        add_site_option('wpavatar_network_controlled_options', $default_controlled);
+
+        // Copy regular options to network options
+        foreach ([
+            'wpavatar_enable_cravatar',
+            'wpavatar_cdn_type',
+            'wpavatar_cravatar_route',
+            'wpavatar_third_party_mirror',
+            'wpavatar_custom_cdn',
+            'wpavatar_hash_method',
+            'wpavatar_timeout',
+            'wpavatar_enable_cache',
+            'wpavatar_cache_path',
+            'wpavatar_cache_expire',
+            'wpavatar_seo_alt',
+            'wpavatar_fallback_mode',
+            'wpavatar_fallback_avatar',
+            'wpavatar_shortcode_size',
+            'wpavatar_shortcode_class',
+            'wpavatar_shortcode_shape'
+        ] as $option_name) {
+            add_site_option($option_name, get_option($option_name));
+        }
+
+        // If current site is not the main site, create site-specific cache dir
+        if (!is_main_site()) {
+            $blog_id = get_current_blog_id();
+            $cache_dir = trailingslashit(WPAVATAR_CACHE_DIR) . 'site-' . $blog_id;
+            wp_mkdir_p($cache_dir);
+
+            $index_file = $cache_dir . '/index.php';
+            if (!file_exists($index_file)) {
+                @file_put_contents($index_file, '<?php // Silence is golden.');
+            }
+        }
     }
 
+    // Schedule daily cache purge
     if (!wp_next_scheduled('wpavatar_purge_cache')) {
         wp_schedule_event(time(), 'daily', 'wpavatar_purge_cache');
     }
 });
 
+// Register deactivation hook
 register_deactivation_hook(__FILE__, function() {
+    // Clear scheduled events
     wp_clear_scheduled_hook('wpavatar_purge_cache');
 });
+
+// 确保 WPAvatar 插件已激活
+add_action('plugins_loaded', function() {
+    if (class_exists('WPAvatar\\Cravatar')) {
+        // 添加兼容性过滤器，确保 WPAvatar 的优先级高于 WP-China-Yes
+        add_action('after_setup_theme', function() {
+            // 检查 WP-China-Yes 插件是否激活
+            if (class_exists('WenPai\\ChinaYes\\Service\\Super') || defined('CHINA_YES_VERSION')) {
+                // 移除 WP-China-Yes 的头像相关过滤器
+                global $wp_filter;
+
+                $filters_to_check = [
+                    'get_avatar_url',
+                    'um_user_avatar_url_filter',
+                    'bp_gravatar_url',
+                    'user_profile_picture_description',
+                    'avatar_defaults'
+                ];
+
+                foreach ($filters_to_check as $filter_name) {
+                    if (isset($wp_filter[$filter_name])) {
+                        foreach ($wp_filter[$filter_name]->callbacks as $priority => $callbacks) {
+                            foreach ($callbacks as $callback_key => $callback_data) {
+                                if (is_array($callback_data['function']) &&
+                                    is_object($callback_data['function'][0]) &&
+                                    get_class($callback_data['function'][0]) === 'WenPai\\ChinaYes\\Service\\Super') {
+
+                                    $method_name = $callback_data['function'][1];
+                                    remove_filter($filter_name, [$callback_data['function'][0], $method_name], $priority);
+                                }
+                            }
+                        }
+                    }
+                }
+
+                // 重新添加 WPAvatar 的过滤器，使用更高的优先级
+                if (wpavatar_get_option('wpavatar_enable_cravatar', true)) {
+                    // 移除原有优先级的过滤器
+                    remove_filter('get_avatar_url', ['WPAvatar\\Cravatar', 'get_avatar_url'], 999);
+                    remove_filter('um_user_avatar_url_filter', ['WPAvatar\\Cravatar', 'replace_avatar_url'], 1);
+                    remove_filter('bp_gravatar_url', ['WPAvatar\\Cravatar', 'replace_avatar_url'], 1);
+
+                    // 使用更高优先级重新添加
+                    add_filter('get_avatar_url', ['WPAvatar\\Cravatar', 'get_avatar_url'], 9999, 2);
+                    add_filter('um_user_avatar_url_filter', ['WPAvatar\\Cravatar', 'replace_avatar_url'], 9999);
+                    add_filter('bp_gravatar_url', ['WPAvatar\\Cravatar', 'replace_avatar_url'], 9999);
+                    add_filter('user_profile_picture_description', ['WPAvatar\\Cravatar', 'modify_profile_picture_description'], 9999);
+                }
+
+                // 添加管理界面通知
+                add_action('admin_notices', function() {
+                    $screen = get_current_screen();
+                    if ($screen && $screen->id === 'settings_page_wpavatar-settings') {
+                        echo '<div class="notice notice-info is-dismissible">';
+                        echo '<p>检测到文派叶子（WPCY.COM）插件，WPAvatar 生态组件兼容性补丁已生效，确保文派头像设置优先。</p>';
+                        echo '</div>';
+                    }
+                });
+            }
+        }, 5);
+    }
+});