* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }
        :root {
            --bg-body: #f3f4f6;
            --bg-card: #ffffff;
            --text-color: #222222;
            --text-gray: #555555;
            --border-color: rgba(128,128,128,0.12);
            --primary-color:#2563eb;
        }
        [data-theme="dark"] {
            --bg-body: #17171a;
            --bg-card: #242429;
            --text-color: #efefef;
            --text-gray: #bbbbbb;
            --border-color:rgba(255,255,255,0.18);
        }
        body {
            background-color: var(--bg-body);
            color: var(--text-color);
            padding: 20px 12px;
            transition: background 0.3s, color 0.3s;
        }
        .wrap-main {
            max-width: 660px;
            margin: 0 auto;
            padding: 0 0 60px;
            position: relative;
        }
       /* ===== 右上角工具按钮组（友链图标 + 主题切换） ===== */
.tool-group {
    position: absolute;
    right: 4px;
    top: 4px;
    display: flex;
    gap: 6px;
    z-index: 99;
    align-items: center;
}
.tool-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    user-select: none;
    transition: transform 0.2s, color 0.3s;
    border-radius: 8px;
}
.tool-btn:hover {
    transform: scale(1.1);
    color: var(--primary-color);
}
.tool-btn:active {
    transform: scale(0.92);
}
.tool-btn svg {
    width: 24px;
    height: 24px;
    display: block;
}
        /* ========== 分页样式 ========== */
.pagination-right {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: var(--text-secondary);
}
.pagination-right span {
    line-height: 1;
    padding: 0 2px;
}
.pagination-right #pageSizeSelect {
    height: 26px;
    padding: 0 4px 0 8px;
    border: 1px solid var(--gray-deep);
    border-radius: 4px;
    outline: none;
    font-size: 13px;
    background: var(--bg-card);
    color: var(--text-color);
    width: 50px;
    cursor: pointer;
    line-height: 1;
}
.pagination-right #pageSizeSelect:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-soft);
}
        /* ========== 内容页样式 ========== */
        .header-row {
            display: flex;
            align-items: center;
            position: relative;
            height: 56px;
            padding: 0 16px;
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
            border-radius: 24px;
        }
        .detail-header {
            position: absolute;
            left: 16px;
        }
        .back-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            color: var(--text-color);
            text-decoration: none;
        }
        .back-btn:active {
            transform: scale(0.92);
        }
        .back-btn svg {
            width:22px;height:22px;
        }
        .detail-title {
            width: 100%;
            text-align: center;
            font-size: 18px;
            font-weight: 600;
            color: var(--text-color);
            margin: 0;
            letter-spacing: 0.5px;
        }
        .content-box {
            margin-top: 20px;
            background: var(--bg-card);
            border-radius: 20px;
            padding: 36px 24px;
            min-height: 360px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
            border: 1px solid var(--border-color);
            transition: background 0.3s, box-shadow 0.3s;
            overflow: hidden;
        }
        .content-box:hover {
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.09);
        }
        .content-box .loading {
            color: #999;
            font-size: 16px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
        }
        .content-box .loading::before {
            content: "";
            width: 32px;
            height: 32px;
            border: 3px solid rgba(128, 128, 128, 0.2);
            border-top-color: #2563eb;
            border-radius: 50%;
            animation: spin 0.8s linear infinite;
        }
        @keyframes spin {
            to { transform: rotate(360deg); }
        }
        .content-box video,.content-box img {
            max-width: 100%;
            max-height: 70vh;
            width: auto;
            height: auto;
            object-fit: contain;
            border-radius: 14px;
        }
        .content-box .text-inner {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-color);
            word-break: break-all;
        }
        .btn-group {
            display: flex;
            gap: 14px;
            margin-top: 24px;
            padding: 0 16px;
        }
        .action-btn {
            flex: 1;
            padding: 14px 10px;
            border: 1px solid var(--border-color);
            border-radius: 14px;
            background: var(--bg-card);
            color: var(--text-color);
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.25s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            position: relative;
            overflow: hidden;
        }
        .action-btn::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(37, 99, 235, 0));
            opacity: 0;
            transition: opacity 0.25s;
        }
        .action-btn:hover {
            border-color: rgba(37, 99, 235, 0.3);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.12);
        }
        .action-btn:hover::after {
            opacity: 1;
        }
        .action-btn:active {
            transform: translateY(0) scale(0.98);
            box-shadow: 0 2px 6px rgba(37, 99, 235, 0.1);
        }
        .action-btn:disabled {
            opacity: 0.4;
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }
        .action-btn:disabled:hover {
            border-color: var(--border-color);
            transform: none;
            box-shadow: none;
        }
        .action-btn:disabled::after {
            display: none;
        }
        .action-btn.is-loading {
            pointer-events: none;
            opacity: 0.7;
        }
        .action-btn.is-loading::before {
            content: "";
            width: 16px;
            height: 16px;
            border: 2px solid rgba(128, 128, 128, 0.3);
            border-top-color: var(--text-color);
            border-radius: 50%;
            animation: spin 0.6s linear infinite;
        }

        /* ========== 首页样式 ========== */
        .banner-slider {
            width: 100%;
            height: 320px;
            border-radius: 14px;
            overflow: hidden;
            position: relative;
            box-shadow: 0 2px 12px rgba(0,0,0,0.08);
            margin-bottom: 16px;
        }
        .slider-wrap {
            display: flex;
            height: 100%;
            transform: translateX(0);
        }
        .slider-item {
            width: 100%;
            flex-shrink: 0;
            height: 100%;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .banner-text-tag{
            position:absolute;
            left:20px;
            bottom:20px;
            z-index:20;
            color:#fff;
            font-size:22px;
            font-weight:bold;
            text-shadow:0 1px 4px #00000070;
            padding:8px 16px;
            border-radius:4px;
        }
        .banner-link-overlay{
            position:absolute;
            inset:0;
            z-index:10;
        }
        .slider-dots{
            position:absolute;
            bottom:14px;
            right:14px;
            display:flex;
            gap:4px;
        }
        .dot{
            width:6px;height:6px;
            border-radius:50%;
            background:rgba(255,255,255,0.35);
        }
        .dot.active{
            background:#ffffff;
        }
        .content-box-home{
            background:var(--bg-card);
            border-radius:14px;
            padding:20px;
            box-shadow:0 2px 12px rgba(0,0,0,0.06);
            transition: background 0.3s;
        }
        .one-word-row{
            display:flex;
            align-items:center;
            gap:10px;
            margin-bottom:20px;
        }
        .tag-yan{
            background:#2563eb;
            color:white;
            font-size:13px;
            padding:3px 8px;
            border-radius:6px;
        }
        .yan-text{
            font-size:14px;
            color:var(--text-gray);
        }
        .card-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
        }
        .item-card {
            border-radius: 12px;
            padding: 22px 18px;
            color: #ffffff;
            position: relative;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            text-decoration: none;
            display: block;
            background-image: url(img/nav-li.b18935fc.png);
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            transition: transform 0.2s, box-shadow 0.2s;
            overflow: hidden;
        }
        .item-card:hover{
            transform: translateY(-4px);
            box-shadow:0 8px 20px rgba(0,0,0,0.15);
        }
        .item-card .t1{
            font-size:18px;
            font-weight:600;
            margin-bottom:6px;
        }
        .item-card .t2{
            font-size:14px;
            opacity:0.85;
        }
        .item-card .icon-svg{
            position:absolute;
            right:16px;
            bottom:16px;
            width:40px;height:40px;
            opacity:0.25;
        }
        .footer-tip{
            max-width:660px;
            margin: -30px auto 0;
            background:var(--bg-card);
            border-radius:12px;
            padding:14px 16px;
            font-size:13px;
            color:var(--text-gray);
            display:flex;
            gap:8px;
            align-items:center;
            transition: background 0.3s;
        }
        .tip-icon{
            color:#ef4444;
            font-weight:bold;
        }

        /* ========== 友链抽屉弹窗 ========== */
        .control-center-mask{
            position:fixed;
            inset:0;
            z-index:198;
            background:rgba(0,0,0,0.35);
            opacity:0;
            visibility:hidden;
            transition:opacity 0.28s ease, visibility 0.28s;
        }
        .control-center-mask.show{
            opacity:1;
            visibility:visible;
        }
        .control-center{
            position:fixed;
            top:50%;
            right:0;
            width:440px;
            max-width:calc(100vw - 20px);
            max-height:90vh;
            z-index:199;
            background:var(--bg-card);
            color:var(--text-color);
            border-radius:16px 0 0 16px;
            box-shadow: 0 4px 30px rgba(0,0,0,0.15);
            transform:translateX(100%) translateY(-50%);
            transition:transform 0.28s ease;
            overflow-y:auto;
            padding:24px;
        }
        .control-center.show{
            transform:translateX(0) translateY(-50%);
        }

        .friendlink-title{
            font-size:22px;
            font-weight:bold;
            margin-bottom:16px;
            display:flex;
            align-items:center;
            gap:8px;
        }
        .friend-desc{
            font-size:14px;
            color:var(--text-gray);
            margin-bottom:20px;
        }
        .friend-list{
            display:grid;
            grid-template-columns:1fr 1fr;
            gap:12px;
            margin-bottom:28px;
        }
        .friend-card{
            border:1px solid var(--border-color);
            border-radius:12px;
            padding:12px;
            text-decoration:none;
            color:var(--text-color);
            display:flex;
            gap:10px;
            align-items:center;
            transition:0.2s;
        }
        .friend-card:hover{
            background:rgba(128,128,128,0.06);
            border-color:var(--primary-color);
        }
        .friend-avatar{
            width:44px;height:44px;
            border-radius:8px;
            object-fit:cover;
            flex-shrink:0;
        }
        .friend-info{
            flex:1;
            overflow:hidden;
        }
        .friend-name{
            font-size:14px;
            font-weight:600;
            white-space:nowrap;
            overflow:hidden;
            text-overflow:ellipsis;
        }
        .friend-desc-item{
            font-size:12px;
            color:var(--text-gray);
            display:-webkit-box;
            -webkit-line-clamp:2;
            -webkit-box-orient:vertical;
            overflow:hidden;
        }

        .apply-title{
            font-size:17px;
            font-weight:600;
            margin-bottom:12px;
        }
        .friend-form-item{
            margin-bottom:12px;
        }
        .friend-form-item label{
            display:block;
            font-size:13px;
            margin-bottom:4px;
            color:var(--text-gray);
        }
        .friend-form-item input,.friend-form-item textarea{
            width:100%;
            padding:10px 12px;
            border:1px solid var(--border-color);
            border-radius:8px;
            background:transparent;
            color:var(--text-color);
            font-size:14px;
            transition:border-color 0.2s;
        }
        .friend-form-item input:focus,.friend-form-item textarea:focus{
            border-color:var(--primary-color);
            outline:none;
        }
        .friend-form-item textarea{
            min-height:80px;
            resize:none;
        }
        .submit-friend-btn{
            width:100%;
            padding:11px;
            background-color:var(--primary-color);
            color:#fff;
            border:none;
            border-radius:8px;
            cursor:pointer;
            font-size:15px;
            transition:background 0.2s, opacity 0.2s;
        }
        .submit-friend-btn:hover{
            background-color:#1d4ed8;
        }
        .submit-friend-btn:disabled{
            opacity:0.6;
            cursor:not-allowed;
        }
        .submit-friend-btn .btn-loading{
            display:inline-block;
            width:16px;
            height:16px;
            border:2px solid rgba(255,255,255,0.3);
            border-top-color:#fff;
            border-radius:50%;
            animation:spin 0.6s linear infinite;
            vertical-align:middle;
            margin-right:6px;
        }
        /* ===== 友链面板 ===== */
.control-center {
    position: fixed;
    top: 50%;
    right: 0;
    width: 520px;
    max-width: calc(100vw - 20px);
    max-height: 90vh;
    z-index: 199;
    background: var(--bg-card);
    border-radius: 16px 0 0 16px;
    box-shadow: 0 8px 40px rgba(0,0,0,0.15);
    transform: translateX(100%) translateY(-50%);
    transition: transform 0.3s ease;
    overflow: hidden;
    padding: 24px 20px;
}

.control-center.show {
    transform: translateX(0) translateY(-50%);
}

/* 关闭按钮 */
.friend-close {
    position: absolute;
    top: 14px;
    right: 16px;
    background: none;
    border: none;
    color: var(--text-gray);
    cursor: pointer;
    padding: 4px;
    border-radius: 6px;
    transition: all 0.2s;
}

.friend-close:hover {
    color: var(--text-color);
    background: var(--border-color);
}

/* 标题 */
.friend-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
    padding-right: 36px;
}

/* ====== 左右分栏布局 ====== */
.friend-layout {
    display: flex;
    gap: 16px;
    height: calc(90vh - 100px);
    max-height: 520px;
}

/* 左侧导航 */
.friend-sidebar {
    width: 120px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding-right: 12px;
    border-right: 1px solid var(--border-color);
}

.friend-sidebar-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: var(--text-gray);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    width: 100%;
    text-align: left;
}

.friend-sidebar-btn:hover {
    background: var(--border-color);
    color: var(--text-color);
}

.friend-sidebar-btn.active {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
}

.friend-sidebar-btn svg {
    flex-shrink: 0;
}

/* 右侧内容 */
.friend-content {
    flex: 1;
    overflow-y: auto;
    padding-right: 4px;
}

.friend-content::-webkit-scrollbar {
    width: 3px;
}

.friend-content::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

/* ===== 页面切换 ===== */
.friend-page {
    display: none;
    animation: fadeUp 0.25s ease;
}

.friend-page.active {
    display: block;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== 友链列表 ===== */
.friend-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}

.friend-count {
    font-size: 13px;
    color: var(--text-gray);
}

.friend-refresh {
    padding: 4px 16px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: transparent;
    color: var(--text-gray);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}

.friend-refresh:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.friend-list{
    display: flex;
    flex-direction: column;
    gap:12px;
    margin-bottom:28px;
}

.friend-card {
    display: flex;
    gap: 12px;
    align-items: center;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.2s;
}

.friend-card:hover {
    border-color: var(--primary-color);
    background: rgba(37,99,235,0.04);
}

.friend-avatar {
    width: 44px;
    height: 44px;
    border-radius: 8px;
    object-fit: cover;
    flex-shrink: 0;
}

.friend-info {
    flex: 1;
    overflow: hidden;
}

.friend-name {
    font-size: 14px;
    font-weight: 600;
}

.friend-desc-item {
    font-size: 12px;
    color: var(--text-gray);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.friend-empty {
    text-align: center;
    color: var(--text-gray);
    padding: 40px 0;
}

/* ===== 申请表单 ===== */
.friend-form-group {
    margin-bottom: 14px;
}

.friend-form-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-color);
    margin-bottom: 4px;
}

.friend-form-group input,
.friend-form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-body);
    color: var(--text-color);
    font-size: 14px;
    transition: border-color 0.2s;
}

.friend-form-group input:focus,
.friend-form-group textarea:focus {
    border-color: var(--primary-color);
    outline: none;
}

.friend-form-group textarea {
    min-height: 70px;
    resize: vertical;
}

.submit-friend-btn {
    width: 100%;
    padding: 12px;
    margin-top: 4px;
    background: var(--primary-color);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.submit-friend-btn:hover {
    background: var(--primary-hover);
}

/* ============================================================
   响应式 - 手机端
   ============================================================ */
@media (max-width: 768px) {
    .control-center {
        width: 100%;
        max-width: 100vw;
        max-height: 100vh;
        border-radius: 16px 16px 0 0;
        transform: translateY(100%) translateX(0);
        top: auto;
        bottom: 0;
        padding: 20px 16px;
    }

    .control-center.show {
        transform: translateY(0) translateX(0);
    }

    .friend-layout {
        flex-direction: row;
        height: calc(100vh - 180px);
        max-height: none;
        gap: 12px;
    }

    /* ===== 手机端左侧导航：只显示图标 ===== */
    .friend-sidebar {
        width: 52px;
        min-width: 52px;
        padding-right: 8px;
        border-right: 1px solid var(--border-color);
        align-items: center;
    }

    .friend-sidebar-btn {
        justify-content: center;
        padding: 10px 0;
        width: 44px;
        height: 44px;
        border-radius: 10px;
        font-size: 0;
        /* 隐藏文字 */
        gap: 0;
    }

    .friend-sidebar-btn .sidebar-text {
        display: none;
        /* 手机端隐藏文字 */
    }

    .friend-sidebar-btn svg {
        width: 22px;
        height: 22px;
        margin: 0;
    }

    /* ===== 手机端右侧内容 ===== */
    .friend-content {
        flex: 1;
        overflow-y: auto;
        padding-right: 0;
        min-width: 0;
    }

    .friend-toolbar {
        flex-wrap: wrap;
        gap: 6px;
    }

    .friend-count {
        font-size: 12px;
    }

    .friend-refresh {
        font-size: 12px;
        padding: 3px 12px;
    }

    .friend-list {
        gap: 8px;
    }

    .friend-card {
        padding: 10px;
    }

    .friend-avatar {
        width: 38px;
        height: 38px;
    }

    .friend-name {
        font-size: 13px;
    }

    .friend-desc-item {
        font-size: 11px;
    }

    .friend-form-group {
        margin-bottom: 10px;
    }

    .friend-form-label {
        font-size: 12px;
    }

    .friend-form-group input,
    .friend-form-group textarea {
        padding: 8px 10px;
        font-size: 13px;
    }

    .friend-form-group textarea {
        min-height: 56px;
    }

    .submit-friend-btn {
        padding: 10px;
        font-size: 14px;
    }

    .friend-title {
        font-size: 18px;
        margin-bottom: 12px;
    }
}

/* 小屏手机 */
@media (max-width: 400px) {
    .friend-sidebar {
        width: 44px;
        min-width: 44px;
        padding-right: 6px;
    }

    .friend-sidebar-btn {
        width: 36px;
        height: 36px;
        padding: 6px 0;
    }

    .friend-sidebar-btn svg {
        width: 18px;
        height: 18px;
    }

    .control-center {
        padding: 16px 12px;
    }

    .friend-title {
        font-size: 16px;
    }
}
/* ===== 申请页面信息美化 ===== */
.apply-info {
    background: var(--bg-body);
    border-radius: 8px;
    padding: 12px 14px;
    margin-bottom: 14px;
}

.apply-info-item {
    display: flex;
    padding: 4px 0;
    font-size: 13px;
    line-height: 1.6;
}

.apply-label {
    color: var(--text-gray);
    flex-shrink: 0;
    width: 72px;
}

.apply-value {
    color: var(--text-color);
    word-break: break-all;
}

.apply-divider {
    height: 1px;
    background: var(--border-color);
    margin: 14px 0;
}

.apply-format {
    margin-bottom: 14px;
}

.apply-format-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 2px;
}

.apply-format-desc {
    font-size: 13px;
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.08);
    padding: 4px 10px;
    border-radius: 4px;
    display: inline-block;
}

.apply-rules {
    margin-bottom: 4px;
}

.apply-rules-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 4px;
}

.apply-rules-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.apply-rules-list li {
    font-size: 13px;
    color: var(--text-gray);
    padding: 3px 0 3px 18px;
    position: relative;
    line-height: 1.5;
}

.apply-rules-list li::before {
    content: "•";
    position: absolute;
    left: 2px;
    color: var(--primary-color);
    font-weight: bold;
}

.apply-rules-list li strong {
    color: var(--text-color);
}

/* 手机端适配 */
@media (max-width: 768px) {
    .apply-info-item {
        font-size: 12px;
        flex-wrap: wrap;
    }

    .apply-label {
        width: 64px;
    }

    .apply-format-desc {
        font-size: 12px;
        word-break: break-all;
    }

    .apply-rules-list li {
        font-size: 12px;
        padding: 2px 0 2px 16px;
    }
}
/* 图标选择器 - 支持更多图标 */
.icon-selector {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(45px, 1fr));
    gap: 6px;
    padding: 10px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    background: #f8fafc;
    max-height: 250px;
    overflow-y: auto;
}
.icon-selector::-webkit-scrollbar {
    width: 6px;
}
.icon-selector::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}
.icon-option {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6px;
    border-radius: 6px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.2s;
    background: white;
    min-height: 40px;
}
.icon-option:hover {
    border-color: #94a3b8;
    background: #f1f5f9;
}
.icon-option.active {
    border-color: #2563eb;
    background: #dbeafe;
}
.icon-option svg {
    width: 24px;
    height: 24px;
}
.icon-option .icon-label {
    display: none;
}
/* ===== 版权信息 ===== */
.page-copyright,
.footer-copyright {
    max-width: 660px;
    margin: 30px auto 12px;
    text-align: center;
    font-size: 12px;
    color: var(--text-gray);
    padding: 0 16px;
    line-height: 1.8;
    word-break: break-word;
    background: transparent !important;
}

.page-copyright a,
.footer-copyright a {
    color: var(--primary-color);
    text-decoration: none;
}

.page-copyright a:active,
.footer-copyright a:active {
    opacity: 0.6;
}
/* ============================================
   返回顶部按钮
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    color: #333;
}

[data-theme="dark"] .back-to-top {
    background: rgba(30, 30, 30, 0.9);
    color: #eee;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
}

.back-to-top:hover {
    transform: scale(1.1);
}

.back-to-top.show {
    display: flex;
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

@media (max-width: 480px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 38px;
        height: 38px;
    }
    .back-to-top svg {
        width: 20px;
        height: 20px;
    }
}