:root {
    --primary: #2f6fed;
    --primary-dark: #1c4fc4;
    --primary-light: #6fa1ff;
    --accent: #4d8dff;
    --bg-1: #eaf2ff;
    --bg-2: #dbe8ff;
    --bg-3: #f4f8ff;
    --text: #1c2b46;
    --text-soft: #5a6b8a;
    --text-mute: #8a99b5;
    --line: rgba(120, 160, 230, 0.28);
    --white-glass: rgba(255, 255, 255, 0.62);
    --white-glass-strong: rgba(255, 255, 255, 0.82);
    --shadow: 0 12px 40px rgba(40, 90, 190, 0.14);
    --shadow-sm: 0 6px 20px rgba(40, 90, 190, 0.10);
    --radius: 18px;
    --radius-sm: 12px;
    --success: #21a366;
    --danger: #e5484d;
    --warning: #f0a020;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: var(--text);
    background: linear-gradient(135deg, var(--bg-1) 0%, var(--bg-2) 45%, var(--bg-3) 100%);
    background-attachment: fixed;
    min-height: 100vh;
    font-size: 15px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: "";
    position: fixed;
    top: -220px;
    right: -160px;
    width: 520px;
    height: 520px;
    background: radial-gradient(circle, rgba(90, 150, 255, 0.35), transparent 70%);
    filter: blur(10px);
    z-index: -1;
}

body::after {
    content: "";
    position: fixed;
    bottom: -240px;
    left: -180px;
    width: 560px;
    height: 560px;
    background: radial-gradient(circle, rgba(120, 190, 255, 0.30), transparent 70%);
    filter: blur(10px);
    z-index: -1;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.glass {
    background: var(--white-glass);
    backdrop-filter: blur(18px) saturate(160%);
    -webkit-backdrop-filter: blur(18px) saturate(160%);
    border: 1px solid rgba(255, 255, 255, 0.65);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
}

.muted { color: var(--text-mute); font-size: 13px; }
.text-soft { color: var(--text-soft); }
.center { text-align: center; }
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-0 { margin-bottom: 0; }

/* ============ 顶部导航 ============ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--white-glass-strong);
    backdrop-filter: blur(20px) saturate(160%);
    -webkit-backdrop-filter: blur(20px) saturate(160%);
    border-bottom: 1px solid var(--line);
}

.nav {
    display: flex;
    align-items: center;
    gap: 22px;
    height: 66px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    white-space: nowrap;
}

.brand .logo {
    width: 36px;
    height: 36px;
    border-radius: 11px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
    box-shadow: 0 6px 16px rgba(47, 111, 237, 0.4);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 1;
    overflow: hidden;
}

.nav-links a {
    padding: 8px 14px;
    border-radius: 10px;
    color: var(--text-soft);
    font-weight: 500;
    white-space: nowrap;
    transition: background-color .18s, color .18s;
}

.nav-links a:hover,
.nav-links a.active {
    background: rgba(47, 111, 237, 0.10);
    color: var(--primary-dark);
}

.nav-search {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-search input {
    width: 200px;
    padding: 9px 14px;
    border-radius: 10px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.7);
    outline: none;
    transition: border-color .18s, box-shadow .18s;
    font-size: 14px;
}

.nav-search input:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(47, 111, 237, 0.14);
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 10px;
    white-space: nowrap;
}

.points-badge {
    background: linear-gradient(135deg, #ffb347, #ff8a00);
    color: #fff;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(255, 138, 0, 0.32);
}

/* ============ 按钮 ============ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 9px 18px;
    border-radius: 11px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.7);
    color: var(--text);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: transform .18s, box-shadow .18s, background-color .18s, color .18s, border-color .18s;
    will-change: transform;
    text-decoration: none;
    line-height: 1.4;
}

.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-sm); color: var(--text); }

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    border-color: transparent;
    box-shadow: 0 8px 20px rgba(47, 111, 237, 0.32);
}
.btn-primary:hover { color: #fff; box-shadow: 0 12px 26px rgba(47, 111, 237, 0.42); }

.btn-danger { background: linear-gradient(135deg, #f0575b, #e5484d); color: #fff; border-color: transparent; }
.btn-danger:hover { color: #fff; }

.btn-success { background: linear-gradient(135deg, #34c47c, #21a366); color: #fff; border-color: transparent; }
.btn-success:hover { color: #fff; }

.btn-sm { padding: 6px 12px; font-size: 13px; border-radius: 9px; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .55; cursor: not-allowed; transform: none; }

/* ============ 布局 ============ */
.page { padding: 26px 0 60px; }

.layout-2col {
    display: grid;
    grid-template-columns: var(--cols, 1fr 300px);
    gap: 22px;
    align-items: start;
}

.panel {
    padding: 22px;
    margin-bottom: 22px;
}

.panel-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 0 0 18px;
    font-size: 17px;
    font-weight: 700;
}

.panel-title .more { font-size: 13px; font-weight: 500; color: var(--text-mute); }

/* ============ 资源卡片 ============ */
.resource-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(268px, 1fr));
    gap: 18px;
}

.resource-card {
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: transform .22s, box-shadow .22s;
    will-change: transform;
    position: relative;
    overflow: hidden;
}

.resource-card:hover { transform: translateY(-4px); box-shadow: 0 18px 44px rgba(40, 90, 190, 0.22); }

.resource-card .rc-head {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.resource-icon {
    width: 46px;
    height: 46px;
    flex: none;
    border-radius: 13px;
    background: linear-gradient(135deg, rgba(47,111,237,.16), rgba(111,161,255,.28));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-dark);
}

.resource-card .rc-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    display: block;
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.resource-card .rc-name:hover { color: var(--primary); }

.resource-card .rc-intro {
    color: var(--text-soft);
    font-size: 13px;
    height: 42px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.resource-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 12px;
    color: var(--text-mute);
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 9px;
    border-radius: 8px;
    background: rgba(47, 111, 237, 0.10);
    color: var(--primary-dark);
    font-size: 12px;
    font-weight: 600;
}

.tag.gray { background: rgba(120, 140, 180, 0.14); color: var(--text-soft); }
.tag.orange { background: rgba(255, 138, 0, 0.14); color: #c96a00; }
.tag.green { background: rgba(33, 163, 102, 0.14); color: #16804f; }
.tag.red { background: rgba(229, 72, 77, 0.13); color: #c62828; }

.rc-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 12px;
    border-top: 1px dashed var(--line);
    font-size: 13px;
    color: var(--text-mute);
}

/* ============ 侧边栏 ============ */
.sidebar .panel { padding: 20px; }

.cat-list { list-style: none; padding: 0; margin: 0; }
.cat-list li a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-radius: 10px;
    color: var(--text-soft);
    font-weight: 500;
    transition: background-color .16s, color .16s;
}
.cat-list li a:hover, .cat-list li a.active { background: rgba(47,111,237,.10); color: var(--primary-dark); }
.cat-list li a .count { font-size: 12px; color: var(--text-mute); }

.rank-list { list-style: none; padding: 0; margin: 0; counter-reset: rank; }
.rank-list li {
    display: flex;
    gap: 10px;
    align-items: center;
    padding: 9px 0;
    border-bottom: 1px dashed var(--line);
    font-size: 14px;
}
.rank-list li:last-child { border-bottom: none; }
.rank-list .rk {
    width: 22px; height: 22px; flex: none;
    border-radius: 7px; background: rgba(47,111,237,.12); color: var(--primary-dark);
    display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700;
}
.rank-list li:nth-child(1) .rk { background: linear-gradient(135deg,#ffb347,#ff8a00); color:#fff; }
.rank-list li:nth-child(2) .rk { background: linear-gradient(135deg,#9fb6d6,#7d97bd); color:#fff; }
.rank-list li:nth-child(3) .rk { background: linear-gradient(135deg,#e0a878,#c98a52); color:#fff; }
.rank-list .rk-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text); }
.rank-list .rk-num { font-size: 12px; color: var(--text-mute); }

/* ============ 页面头部 / 英雄区 ============ */
.hero {
    padding: 34px 30px;
    margin-bottom: 22px;
    text-align: center;
}
.hero h1 { margin: 0 0 8px; font-size: 28px; }
.hero p { margin: 0; color: var(--text-soft); }

.section-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}
.section-head h2 { margin: 0; font-size: 20px; }

/* ============ 表格 ============ */
.table-wrap { overflow-x: auto; }
table.data {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
table.data th, table.data td {
    padding: 12px 14px;
    text-align: left;
    border-bottom: 1px solid var(--line);
    white-space: nowrap;
}
table.data th { color: var(--text-soft); font-weight: 600; background: rgba(255,255,255,.4); }
table.data tr:hover td { background: rgba(255,255,255,.45); }
table.data td.wrap { white-space: normal; min-width: 220px; }

/* ============ 表单 ============ */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 600; font-size: 14px; color: var(--text-soft); }
.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="email"],
.form-group input[type="number"],
.form-group input[type="url"],
.form-group input[type="file"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border-radius: 11px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.72);
    outline: none;
    font-size: 14px;
    font-family: inherit;
    color: var(--text);
    transition: border-color .16s, box-shadow .16s, background-color .16s;
}
.form-group textarea { min-height: 110px; resize: vertical; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(47, 111, 237, 0.14);
    background: #fff;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-hint { font-size: 12px; color: var(--text-mute); margin-top: 5px; }
.checkbox-line { display: flex; align-items: center; gap: 8px; }
.checkbox-line input { width: auto; }

/* ============ 提示 ============ */
.alert {
    padding: 12px 16px;
    border-radius: 12px;
    margin-bottom: 16px;
    font-size: 14px;
    border: 1px solid transparent;
}
.alert-success { background: rgba(33,163,102,.12); color: #16794c; border-color: rgba(33,163,102,.3); }
.alert-error { background: rgba(229,72,77,.12); color: #b32024; border-color: rgba(229,72,77,.3); }
.alert-warning { background: rgba(240,160,32,.14); color: #9a6500; border-color: rgba(240,160,32,.32); }
.alert-info { background: rgba(47,111,237,.12); color: #1c4fc4; border-color: rgba(47,111,237,.3); }

/* ============ 分页 ============ */
.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 26px; flex-wrap: wrap; }
.pagination a, .pagination span {
    min-width: 38px; height: 38px; padding: 0 12px;
    display: inline-flex; align-items: center; justify-content: center;
    border-radius: 10px; background: var(--white-glass); border: 1px solid var(--line);
    color: var(--text-soft); font-weight: 600; font-size: 14px;
    backdrop-filter: blur(10px);
}
.pagination a:hover { background: rgba(47,111,237,.12); color: var(--primary-dark); }
.pagination .current { background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff; border-color: transparent; }
.pagination .dots { background: transparent; border: none; }

/* ============ 详情页 ============ */
.detail-head { display: flex; gap: 18px; align-items: flex-start; }
.detail-head .resource-icon { width: 64px; height: 64px; font-size: 26px; border-radius: 18px; }
.detail-head h1 { margin: 0 0 8px; font-size: 24px; }
.detail-meta { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.detail-body { margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--line); line-height: 1.85; color: var(--text-soft); word-break: break-word; }
.detail-body .intro-img { display: block; max-width: 100%; margin: 10px 0; border-radius: 12px; border: 1px solid var(--line); }
.intro-toolbar { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; flex-wrap: wrap; }

/* 资源文件异步上传 */
.upload-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.upload-progress { height: 8px; margin-top: 10px; border-radius: 5px; background: rgba(120, 160, 230, 0.22); overflow: hidden; }
.upload-bar { height: 100%; width: 0; border-radius: 5px; background: linear-gradient(135deg, var(--primary), var(--accent)); transition: width .2s ease; }
.detail-actions { margin-top: 22px; display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.stat-row { display: flex; flex-wrap: wrap; gap: 26px; margin-top: 16px; }
.stat-item { text-align: center; }
.stat-item .num { font-size: 22px; font-weight: 700; color: var(--primary-dark); }
.stat-item .lbl { font-size: 12px; color: var(--text-mute); }
.stat-item .num a { color: var(--primary-dark); }
.stat-item .num a:hover { text-decoration: underline; }
.rc-foot a { color: var(--primary-dark); }
.rc-foot a:hover { text-decoration: underline; }

/* 资源版本列表 */
.version-list { display: flex; flex-direction: column; gap: 10px; }
.version-row {
    display: flex; align-items: center; gap: 14px;
    padding: 12px 14px; border-radius: 12px;
    border: 1px solid var(--line); background: rgba(255, 255, 255, 0.55);
}
.version-name { font-weight: 700; color: var(--primary-dark); display: flex; align-items: center; gap: 8px; }

/* ============ 用户中心 ============ */
.user-hero { display: flex; align-items: center; gap: 20px; padding: 26px; }
.avatar-circle {
    width: 68px; height: 68px; border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff; font-size: 28px; font-weight: 700;
    display: flex; align-items: center; justify-content: center; flex: none;
    box-shadow: 0 8px 22px rgba(47,111,237,.4);
}
.user-hero .u-info h1 { margin: 0 0 4px; font-size: 22px; }

.tabs { display: flex; gap: 8px; margin-bottom: 20px; flex-wrap: wrap; }
.tabs a {
    padding: 9px 18px; border-radius: 11px; background: var(--white-glass);
    border: 1px solid var(--line); color: var(--text-soft); font-weight: 600; font-size: 14px;
}
.tabs a.active, .tabs a:hover { background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff; border-color: transparent; }

.stat-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 16px; }
.stat-card { padding: 20px; text-align: center; }
.stat-card .num { font-size: 26px; font-weight: 700; color: var(--primary-dark); }
.stat-card .lbl { font-size: 13px; color: var(--text-mute); margin-top: 4px; }

/* ============ 认证页 ============ */
.auth-wrap { min-height: calc(100vh - 66px); display: flex; align-items: center; justify-content: center; padding: 40px 20px; }
.auth-card { width: 100%; max-width: 420px; padding: 34px; }
.auth-card h1 { margin: 0 0 6px; font-size: 24px; text-align: center; }
.auth-card .sub { text-align: center; color: var(--text-mute); margin-bottom: 24px; font-size: 14px; }
.auth-foot { text-align: center; margin-top: 18px; font-size: 14px; color: var(--text-soft); }

/* ============ 安装页 ============ */
.install-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 30px 20px; }
.install-card { width: 100%; max-width: 460px; padding: 36px; }
.install-card h1 { margin: 0 0 22px; font-size: 22px; text-align: center; }
.install-card .actions { display: flex; gap: 12px; margin-top: 20px; }

/* ============ 后台 ============ */
.admin-body { background: linear-gradient(135deg, #eef3fd 0%, #e2ecfd 100%); }
.admin-layout { display: flex; min-height: 100vh; }
.admin-side {
    width: 236px; flex: none;
    background: var(--white-glass-strong);
    backdrop-filter: blur(20px);
    border-right: 1px solid var(--line);
    padding: 20px 14px;
    position: sticky; top: 0; height: 100vh; overflow-y: auto;
}
.admin-side .brand { padding: 0 10px 18px; margin-bottom: 12px; border-bottom: 1px solid var(--line); }
.admin-menu { list-style: none; padding: 0; margin: 0; }
.admin-menu li { margin-bottom: 4px; }
.admin-menu a,
.admin-menu summary.menu-parent {
    display: flex; align-items: center; gap: 10px;
    padding: 11px 14px; border-radius: 11px; color: var(--text-soft); font-weight: 600; font-size: 14px;
    transition: background-color .16s, color .16s; cursor: pointer;
}
.admin-menu a:hover, .admin-menu a.active,
.admin-menu summary.menu-parent:hover, .admin-menu summary.menu-parent.active { background: rgba(47,111,237,.12); color: var(--primary-dark); }

/* 二级菜单（原生 details/summary，无需 JS 即可收起/展开） */
.admin-menu summary.menu-parent { list-style: none; }
.admin-menu summary.menu-parent::-webkit-details-marker { display: none; }
.admin-menu .menu-arrow { margin-left: auto; font-size: 11px; opacity: .65; transition: transform .2s; }
.admin-menu details[open] > .menu-parent .menu-arrow { transform: rotate(180deg); }
.admin-menu .admin-submenu { list-style: none; padding: 0; margin: 2px 0 6px; }
.admin-menu .admin-submenu a {
    display: block;
    position: relative;
    padding: 9px 14px 9px 44px;
    font-size: 13.5px;
    font-weight: 500;
    border-radius: 10px;
}
.admin-menu .admin-submenu a::before {
    content: '';
    position: absolute;
    left: 26px;
    top: 50%;
    width: 6px;
    height: 6px;
    margin-top: -3px;
    border-radius: 50%;
    background: currentColor;
    opacity: .3;
}
.admin-menu .admin-submenu a:hover { background: rgba(47,111,237,.08); color: var(--primary-dark); }
.admin-menu .admin-submenu a.active { background: rgba(47,111,237,.14); color: var(--primary-dark); }
.admin-menu .admin-submenu a.active::before { opacity: 1; }

/* 设置页分区导航 */
.settings-nav { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.settings-nav a {
    padding: 8px 14px;
    border-radius: 10px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.7);
    color: var(--text-soft);
    font-size: 13.5px;
    font-weight: 600;
}
.settings-nav a:hover { border-color: var(--primary-light); color: var(--primary-dark); }
.settings-nav a.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.admin-main { flex: 1; padding: 24px 26px; min-width: 0; }
.admin-topbar {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 20px; margin-bottom: 22px;
}
.admin-topbar h1 { margin: 0; font-size: 19px; }

.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 18px; }
.dash-card { padding: 22px; display: flex; align-items: center; gap: 16px; }
.dash-card .icon {
    width: 52px; height: 52px; border-radius: 15px; flex: none;
    display: flex; align-items: center; justify-content: center; font-size: 22px;
    background: linear-gradient(135deg, rgba(47,111,237,.16), rgba(111,161,255,.3)); color: var(--primary-dark);
}
.dash-card .num { font-size: 24px; font-weight: 700; }
.dash-card .lbl { font-size: 13px; color: var(--text-mute); }

.toolbar { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-bottom: 18px; }
.toolbar .grow { flex: 1; }

.badge-status { padding: 3px 10px; border-radius: 8px; font-size: 12px; font-weight: 600; }
.badge-on { background: rgba(33,163,102,.14); color: #16804f; }
.badge-off { background: rgba(120,140,180,.16); color: var(--text-soft); }

.empty {
    text-align: center; padding: 50px 20px; color: var(--text-mute);
}
.empty .icon { font-size: 42px; margin-bottom: 10px; }

/* ============ 页脚 ============ */
.site-footer {
    margin-top: 40px;
    padding: 26px 0;
    text-align: center;
    color: var(--text-mute);
    font-size: 13px;
    border-top: 1px solid var(--line);
}
.site-footer a { color: var(--text-soft); }

/* ============ 移动端适配 ============ */
.nav-toggle {
    display: none;
    order: 2;
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid var(--line);
    border-radius: 10px;
    font-size: 18px;
    line-height: 1;
    padding: 8px 12px;
    cursor: pointer;
    color: var(--text);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 22px;
    cursor: pointer;
    color: var(--text);
}

@media (max-width: 900px) {
    /* 双栏变单栏：用 --cols 变量控制，避免内联样式阻断媒体查询 */
    .layout-2col { grid-template-columns: 1fr !important; }
    .form-row { grid-template-columns: 1fr; }

    /* 顶部导航折叠 */
    .nav {
        flex-wrap: wrap;
        height: auto;
        padding: 10px 0;
        row-gap: 10px;
    }
    .brand { order: 1; font-size: 18px; }
    .nav-toggle { display: inline-flex; }
    .nav-user { order: 3; margin-left: auto; gap: 6px; }
    .nav-user .btn { padding: 7px 10px; font-size: 13px; }
    .nav-links {
        display: none;
        order: 4;
        width: 100%;
        flex-direction: column;
        gap: 2px;
        padding-top: 8px;
        border-top: 1px solid var(--line);
    }
    .nav-links a { display: block; padding: 10px 12px; }
    .nav-search {
        display: none;
        order: 5;
        width: 100%;
    }
    .nav-search input { width: 100%; }
    .nav.mobile-open .nav-links { display: flex; }
    .nav.mobile-open .nav-search { display: flex; }

    /* 内容留白 */
    .page { padding: 16px 0 40px; }
    .container { padding: 0 14px; }
    .panel { padding: 16px; margin-bottom: 16px; }
    .hero { padding: 24px 18px; }
    .hero h1 { font-size: 22px; }
    .section-head { flex-wrap: wrap; gap: 8px; }
    .panel-title { font-size: 16px; }

    /* 卡片 / 网格 */
    .resource-grid { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
    .stat-cards { grid-template-columns: repeat(2, 1fr); }
    .grid-4 { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
    .dash-card { padding: 16px; gap: 12px; }
    .dash-card .num { font-size: 20px; }

    /* 详情 / 用户中心 */
    .detail-head { flex-direction: column; gap: 12px; }
    .detail-head h1 { font-size: 20px; }
    .stat-row { gap: 18px; }
    .user-hero { flex-direction: column; text-align: center; }
    .user-hero > div:last-child { text-align: center !important; width: 100%; }

    /* 表格横向滚动 */
    .table-wrap { -webkit-overflow-scrolling: touch; }
    table.data th, table.data td { padding: 10px 12px; }

    /* 后台 / 开发者中心 侧边栏抽屉（用 transform 合成动画，避免 left 触发布局） */
    .admin-side {
        position: fixed;
        left: 0;
        top: 0;
        z-index: 100;
        box-shadow: 0 0 40px rgba(20, 50, 110, 0.18);
        transform: translateX(-260px);
        transition: transform 0.24s ease;
        will-change: transform;
    }
    .admin-side.open { transform: translateX(0); }
    .admin-main { padding: 14px; }
    .admin-topbar {
        padding: 12px 14px;
        margin-bottom: 16px;
        flex-wrap: wrap;
        gap: 8px;
    }
    .admin-topbar h1 { font-size: 17px; }
    .menu-toggle { display: block; }

    /* 认证 / 安装卡片 */
    .auth-wrap { min-height: auto; padding: 24px 14px; }
    .auth-card, .install-card { padding: 24px; }
    .toolbar { gap: 8px; }
    .toolbar .btn, .toolbar input, .toolbar select { flex: 1 1 auto; }
}

@media (max-width: 480px) {
    .brand { font-size: 16px; }
    .brand span:last-child {
        max-width: 130px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    .resource-grid { grid-template-columns: 1fr; }
    .stat-cards { grid-template-columns: repeat(2, 1fr); }
    .points-badge { font-size: 12px; padding: 4px 9px; }
    .tabs a { padding: 8px 12px; font-size: 13px; }
    table.data { font-size: 13px; }
    .btn { padding: 8px 14px; }
    .nav-search .btn { padding: 9px 14px; }
}

/* ============ 分类树 / 面包屑 ============ */
.cat-list.cat-sub {
    margin: 2px 0 4px 12px;
    padding-left: 8px;
    border-left: 1px dashed var(--line);
}
.cat-list.cat-sub li a { padding: 7px 10px; font-size: 13px; }
.cat-branch { color: var(--text-mute); margin-right: 4px; }
.cat-indent { color: var(--text-mute); }

.breadcrumb { font-size: 13px; color: var(--text-mute); }
.breadcrumb a { color: var(--text-soft); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { margin: 0 6px; color: var(--text-mute); }
.breadcrumb .current { color: var(--text); font-weight: 600; }

.sub-cats { display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 18px; }
.sub-cat {
    display: inline-flex;
    align-items: center;
    padding: 7px 14px;
    border-radius: 10px;
    background: rgba(47, 111, 237, 0.10);
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 600;
    border: 1px solid rgba(47, 111, 237, 0.18);
}
.sub-cat:hover { background: rgba(47, 111, 237, 0.18); color: var(--primary-dark); }

/* ============ 分享弹窗 ============ */
.modal-mask {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: rgba(20, 45, 90, 0.35);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 300;
}
.modal-card {
    width: 100%;
    max-width: 460px;
    padding: 24px;
    border-radius: var(--radius);
}
.modal-card h3 { margin: 0 0 6px; font-size: 18px; }
.modal-card textarea {
    width: 100%;
    min-height: 120px;
    margin-top: 10px;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.9);
    color: var(--text);
    font-family: inherit;
    font-size: 14px;
    line-height: 1.7;
    resize: vertical;
    outline: none;
}
.modal-card textarea:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(47, 111, 237, 0.14);
}
.modal-actions { display: flex; gap: 10px; margin-top: 14px; }
.modal-actions .btn { flex: 1; }

/* ============ 公告弹窗 ============ */
.ann-card { max-width: 540px; }
.ann-list { margin-top: 12px; max-height: 56vh; overflow-y: auto; }
.ann-item {
    padding: 14px 16px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.68);
    border: 1px solid var(--line);
    margin-bottom: 10px;
}
.ann-item:last-child { margin-bottom: 0; }
.ann-title { font-weight: 700; font-size: 15px; margin-bottom: 6px; color: var(--primary-dark); }
.ann-body { font-size: 14px; line-height: 1.8; color: var(--text); word-break: break-word; }
.ann-time { margin-top: 8px; font-size: 12px; color: var(--text-mute); }

/* ============ 充值 ============ */
.preset-amounts { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.preset-btn {
    padding: 8px 14px;
    border-radius: 10px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.7);
    color: var(--primary-dark);
    font-weight: 600;
    font-size: 13px;
    cursor: pointer;
    font-family: inherit;
}
.preset-btn:hover { border-color: var(--primary-light); background: rgba(47, 111, 237, 0.1); }
.channel-list { display: flex; flex-wrap: wrap; gap: 10px; }
.form-group .channel-item {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 0;
    padding: 10px 14px;
    border-radius: 11px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
}
.form-group .channel-item:hover { border-color: var(--primary-light); }
.form-group .channel-item input { width: auto; margin: 0; }