/* roulang page: index */
/* ============ 设计变量 ============ */
:root {
  --color-primary: #2E6BFF;
  --color-accent: #00E0C6;
  --color-amber: #FFB84D;
  --color-bg: #0B0F1A;
  --color-bg-light: #101828;
  --color-bg-deep: #060A11;
  --color-text: #E5EAF2;
  --color-muted: #8B96A8;
  --glass-bg: rgba(255,255,255,0.04);
  --glass-border: rgba(255,255,255,0.08);
  --radius-card: 16px;
  --shadow-glow: 0 0 24px rgba(46,107,255,0.45);
  --shadow-glow-lg: 0 0 40px rgba(46,107,255,0.6);
}
/* ============ 基础 Reset ============ */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; }

/* ============ 容器 ============ */
.container-custom {
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1rem;
  padding-right: 1rem;
}
@media (min-width: 640px) { .container-custom { padding-left: 1.5rem; padding-right: 1.5rem; } }
@media (min-width: 1024px) { .container-custom { padding-left: 2rem; padding-right: 2rem; } }

/* ============ 玻璃卡片 ============ */
.glass-card {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08), 0 12px 30px rgba(0,0,0,0.25);
  transition: all .3s ease;
}
.glass-card:hover {
  border-color: rgba(255,255,255,0.18);
  transform: translateY(-4px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.1), 0 16px 40px rgba(0,0,0,0.35);
}

/* ============ 按钮 ============ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: #fff;
  border-radius: 999px;
  font-weight: 600;
  padding: 0.75rem 1.75rem;
  box-shadow: var(--shadow-glow);
  transition: all .2s ease;
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 36px rgba(46,107,255,0.65);
  background: #3a78ff;
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-primary:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--color-text);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 999px;
  font-weight: 500;
  padding: 0.75rem 1.75rem;
  transition: all .2s ease;
}
.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-1px);
}
.btn-outline:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* ============ 导航 ============ */
.topbar {
  background: #060A11;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.nav-main {
  background: rgba(11,15,26,0.85);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: background .3s ease;
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: #A4AEBF;
  transition: color .2s;
  white-space: nowrap;
}
.nav-link:hover { color: #fff; }
.nav-link.active { color: #fff; }
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0.75rem;
  right: 0.75rem;
  height: 2px;
  border-radius: 2px;
  background: var(--color-accent);
  box-shadow: 0 0 10px rgba(0,224,198,0.5);
}
.nav-link.outline-link {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 999px;
  padding: 0.35rem 1rem;
}
.nav-link.outline-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.drawer-mask {
  transition: opacity .3s ease, visibility .3s ease;
}
.drawer-panel {
  transition: transform .3s ease;
}

/* ============ Hero ============ */
.hero-section {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}
.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(11,15,26,0.94) 0%, rgba(11,15,26,0.72) 50%, rgba(11,15,26,0.4) 100%);
  z-index: 1;
}
.hero-section::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(circle at 80% 20%, rgba(0,224,198,0.12) 0%, transparent 40%),
    radial-gradient(circle at 20% 80%, rgba(46,107,255,0.15) 0%, transparent 45%);
}
.hero-content {
  position: relative;
  z-index: 2;
}

/* ============ 块级标题 ============ */
.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
}
@media (min-width: 768px) {
  .section-title { font-size: 2rem; }
}
.section-subtitle {
  color: var(--color-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-top: 0.75rem;
}

/* ============ 徽章 ============ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.7rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.badge-blue {
  background: rgba(46,107,255,0.15);
  color: #6E9BFF;
  border: 1px solid rgba(46,107,255,0.25);
}
.badge-cyan {
  background: rgba(0,224,198,0.1);
  color: var(--color-accent);
  border: 1px solid rgba(0,224,198,0.25);
}
.badge-amber {
  background: rgba(255,184,77,0.15);
  color: var(--color-amber);
  border: 1px solid rgba(255,184,77,0.3);
}

/* ============ 表格 ============ */
.membership-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.9rem;
}
.membership-table th {
  text-align: center;
  padding: 1rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.membership-table thead th {
  font-weight: 600;
  font-size: 1rem;
  padding: 1.25rem 1rem;
  vertical-align: middle;
  background: rgba(255,255,255,0.02);
}
.membership-table thead th:first-child {
  text-align: left;
  background: transparent;
}
.membership-table td {
  padding: 0.9rem 1rem;
  text-align: center;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  color: #A4AEBF;
}
.membership-table td:first-child {
  text-align: left;
  color: var(--color-text);
  font-weight: 500;
}
.membership-table tbody tr:hover {
  background: rgba(255,255,255,0.02);
}
.membership-table .no-value {
  color: rgba(139,150,168,0.5);
  font-style: italic;
  text-decoration: line-through;
  opacity: 0.4;
}
.membership-table .highlight-col {
  background: rgba(46,107,255,0.05);
  border-left: 1px solid rgba(46,107,255,0.15);
  border-right: 1px solid rgba(46,107,255,0.15);
  box-shadow: inset 0 0 30px rgba(46,107,255,0.04);
}
.membership-table .highlight-col th {
  background: rgba(46,107,255,0.12);
}
.membership-table .check-yes {
  color: var(--color-accent);
  font-weight: 700;
  font-size: 1.1rem;
}

/* ============ 等级卡 ============ */
.level-card {
  position: relative;
  border-radius: var(--radius-card);
  padding: 1.5rem;
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06), 0 10px 30px rgba(0,0,0,0.25);
  transition: all .3s ease;
  overflow: hidden;
}
.level-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: 3px 3px 0 0;
}
.level-card:hover {
  border-color: rgba(255,255,255,0.2);
  transform: translateY(-4px);
  box-shadow: 0 18px 45px rgba(0,0,0,0.4);
}
.level-card.level-silver::before { background: linear-gradient(90deg, #C0C8D4, rgba(192,200,212,0.3)); }
.level-card.level-gold::before { background: linear-gradient(90deg, #FFB84D, rgba(255,184,77,0.3)); }
.level-card.level-diamond::before { background: linear-gradient(90deg, #00E0C6, rgba(0,224,198,0.3)); }
.level-number {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
  color: rgba(255,255,255,0.08);
  position: absolute;
  top: 0.8rem;
  right: 1.2rem;
}
.level-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  margin-top: 0.5rem;
  margin-right: 0.35rem;
  margin-bottom: 0.3rem;
}

/* ============ 内容卡 ============ */
.content-card {
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: all .3s ease;
  display: flex;
  flex-direction: column;
}
.content-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255,255,255,0.2);
  box-shadow: 0 18px 40px rgba(0,0,0,0.35);
}
.content-card .thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}
.content-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.content-card:hover .thumb img { transform: scale(1.05); }
.content-card .lock-badge {
  position: absolute;
  top: 0.65rem;
  right: 0.65rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: rgba(11,15,26,0.75);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255,184,77,0.3);
  border-radius: 999px;
  color: var(--color-amber);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
}

/* ============ FAQ ============ */
.faq-item {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color .3s;
}
.faq-item[open] {
  border-color: rgba(46,107,255,0.3);
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 1.1rem 1.25rem;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-text);
  list-style: none;
  transition: color .2s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--color-accent); }
.faq-item summary .faq-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.2);
  font-size: 0.8rem;
  color: var(--color-muted);
  flex-shrink: 0;
  transition: all .3s ease;
}
.faq-item[open] summary .faq-icon {
  transform: rotate(45deg);
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.faq-item .faq-body {
  padding: 0 1.25rem 1.1rem;
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.7;
}

/* ============ CTA ============ */
.cta-section {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #0E1830 0%, #101828 40%, #0B0F1A 100%);
}
.cta-section::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,224,198,0.14) 0%, transparent 70%);
  top: -200px;
  right: -100px;
  pointer-events: none;
}
.cta-section::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(46,107,255,0.12) 0%, transparent 70%);
  bottom: -180px;
  left: -80px;
  pointer-events: none;
}

/* ============ 页脚 ============ */
.site-footer {
  background: #060A11;
  border-top: 1px solid rgba(255,255,255,0.05);
  position: relative;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,224,198,0.5), rgba(46,107,255,0.4), transparent);
}
.footer-link {
  color: #8B96A8;
  font-size: 0.85rem;
  transition: color .2s;
  display: inline-block;
  padding: 0.2rem 0;
}
.footer-link:hover { color: var(--color-accent); }

/* ============ 移动端抽屉 ============ */
@media (max-width: 1023px) {
  .desktop-nav { display: none; }
  .mobile-burger { display: flex; }
}
@media (min-width: 1024px) {
  .mobile-burger { display: none; }
  .drawer-panel { display: none !important; }
  .drawer-mask { display: none !important; }
}
.drawer-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 80%;
  max-width: 360px;
  background: #0B0F1A;
  border-left: 1px solid rgba(255,255,255,0.08);
  z-index: 1000;
  padding: 2rem 1.5rem;
  transform: translateX(100%);
  overflow-y: auto;
}
.drawer-panel.open {
  transform: translateX(0);
}
.drawer-mask {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
}
.drawer-mask.open {
  opacity: 1;
  visibility: visible;
}

/* ============ 内容列表卡 ============ */
.info-card {
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: all .3s ease;
  display: flex;
  flex-direction: column;
  height: 100%;
}
.info-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255,255,255,0.2);
  box-shadow: 0 14px 35px rgba(0,0,0,0.3);
}
.info-card .row-top {
  padding: 1.1rem 1.25rem 0.5rem;
}
.info-card .title-link {
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color .2s;
}
.info-card .title-link:hover { color: #6E9BFF; }
.info-card .summary {
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-muted);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.info-card .row-bottom {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem 1.1rem;
  border-top: 1px solid rgba(255,255,255,0.04);
}
.info-card .read-more {
  color: var(--color-muted);
  font-size: 0.8rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: all .2s;
}
.info-card .read-more:hover {
  color: var(--color-accent);
}
.info-card:hover .read-more {
  transform: translateX(2px);
}

/* ============ 统计条 ============ */
.stat-item {
  text-align: center;
  padding: 0.75rem 1rem;
}
.stat-item + .stat-item {
  border-left: 1px solid rgba(255,255,255,0.06);
}
.stat-number {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.stat-number span { color: var(--color-accent); }
.stat-label {
  font-size: 0.75rem;
  color: var(--color-muted);
  margin-top: 0.2rem;
}
@media (max-width: 640px) {
  .stat-number { font-size: 1.15rem; }
  .stat-label { font-size: 0.65rem; }
}

/* ============ 其他通用 ============ */
.text-gradient-blue {
  background: linear-gradient(135deg, #6E9BFF 0%, #00E0C6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
@media (max-width: 520px) {
  .container-custom { padding-left: 0.9rem; padding-right: 0.9rem; }
  .btn-primary, .btn-outline { width: 100%; }
}

/* roulang page: category1 */
:root {
            --color-primary: #2E6BFF;
            --color-accent: #00E0C6;
            --color-amber: #FFB84D;
            --bg-deep: #0B0F1A;
            --bg-body: #0E1420;
            --bg-light: #101828;
            --text-main: #E5EAF2;
            --text-sub: #8B96A8;
            --glass-bg: rgba(255, 255, 255, 0.04);
            --glass-border: rgba(255, 255, 255, 0.08);
            --radius-card: 16px;
            --radius-btn: 12px;
            --shadow-glow: 0 0 24px rgba(46, 107, 255, 0.45);
            --font-sans: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        .container-custom {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }
        @media (min-width: 640px) {
            .container-custom {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .container-custom {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        input,
        textarea {
            font-family: inherit;
        }

        /* 顶部信息条 */
        .top-info-bar {
            background: #060A11;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 0.78rem;
            color: #8B96A8;
            height: 36px;
            display: flex;
            align-items: center;
        }
        .top-info-bar .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .top-info-bar .site-domain {
            font-family: "SF Mono", "Fira Code", monospace;
            font-size: 0.75rem;
            letter-spacing: 0.02em;
            color: #8B96A8;
        }
        .top-info-bar .top-link {
            color: #8B96A8;
            font-size: 0.78rem;
            transition: color 0.2s;
        }
        .top-info-bar .top-link:hover {
            color: #ffffff;
        }
        .top-info-bar .top-link-accent {
            color: var(--color-accent);
        }
        .top-info-bar .top-link-accent:hover {
            color: #ffffff;
        }
        @media (max-width: 640px) {
            .top-info-bar .top-right {
                display: none;
            }
        }

        /* 主导航 */
        .nav-main {
            background: rgba(11, 15, 26, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            position: sticky;
            top: 0;
            z-index: 50;
            transition: background 0.3s ease;
        }
        .nav-link {
            font-size: 0.92rem;
            font-weight: 500;
            color: #AEB7C5;
            padding: 0.5rem 0.9rem;
            border-radius: 8px;
            position: relative;
            transition: color 0.2s, background 0.2s;
        }
        .nav-link:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.05);
        }
        .nav-link.active {
            color: #ffffff;
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0.9rem;
            right: 0.9rem;
            bottom: 0.2rem;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            box-shadow: 0 0 8px rgba(0, 224, 198, 0.5);
        }
        .outline-link {
            font-size: 0.85rem;
            font-weight: 500;
            color: #C6CDD8;
            padding: 0.5rem 1.2rem;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 20px;
            transition: all 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .outline-link:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            transform: translateY(-1px);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: var(--color-primary);
            color: #ffffff;
            font-size: 0.9rem;
            font-weight: 600;
            padding: 0.65rem 1.6rem;
            border-radius: 24px;
            box-shadow: 0 0 24px rgba(46, 107, 255, 0.4);
            transition: all 0.25s;
            border: none;
            line-height: 1.4;
        }
        .btn-primary:hover {
            background: #3D79FF;
            box-shadow: 0 0 32px rgba(46, 107, 255, 0.65);
            transform: translateY(-1px);
            color: #ffffff;
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        @media (max-width: 1023px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-burger {
                display: flex !important;
            }
        }
        @media (min-width: 1024px) {
            .mobile-burger {
                display: none !important;
            }
        }
        .mobile-burger {
            display: none;
            color: #ffffff;
        }

        /* 移动抽屉 */
        .mobile-drawer {
            position: fixed;
            inset: 0;
            z-index: 100;
            background: rgba(10, 14, 22, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            transform: translateX(100%);
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            display: flex;
            flex-direction: column;
            padding: 2rem 1.5rem;
        }
        .mobile-drawer.open {
            transform: translateX(0);
        }
        .drawer-close {
            align-self: flex-end;
            color: #8B96A8;
            padding: 0.5rem;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            background: transparent;
            transition: color 0.2s, border-color 0.2s;
        }
        .drawer-close:hover {
            color: white;
            border-color: rgba(255, 255, 255, 0.3);
        }
        .drawer-nav {
            margin-top: 3rem;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .drawer-nav a {
            font-size: 1.25rem;
            font-weight: 600;
            color: #E5EAF2;
            padding: 0.75rem 0.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: color 0.2s, border-color 0.2s;
        }
        .drawer-nav a:hover {
            color: var(--color-accent);
            border-color: rgba(0, 224, 198, 0.3);
        }
        .drawer-nav a.active {
            color: var(--color-accent);
        }
        .drawer-cta {
            margin-top: 2rem;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        /* Hero */
        .cat-hero {
            position: relative;
            padding: 5rem 0 4rem;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }
        .cat-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(11, 15, 26, 0.95) 0%, rgba(11, 15, 26, 0.7) 55%, rgba(11, 15, 26, 0.45) 100%);
            z-index: 1;
        }
        .cat-hero::after {
            content: "";
            position: absolute;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(46, 107, 255, 0.25) 0%, transparent 70%);
            top: -100px;
            right: -60px;
            z-index: 1;
        }
        .cat-hero .container-custom {
            position: relative;
            z-index: 2;
        }
        .cat-hero-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
            align-items: center;
        }
        @media (min-width: 1024px) {
            .cat-hero-grid {
                grid-template-columns: 3fr 2fr;
                gap: 4rem;
            }
        }
        .pill-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.3rem 0.9rem;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 500;
            letter-spacing: 0.03em;
            color: var(--color-accent);
            border: 1px solid rgba(0, 224, 198, 0.35);
            background: rgba(0, 224, 198, 0.08);
            margin-bottom: 1.2rem;
        }
        .cat-hero h1 {
            font-size: 2rem;
            line-height: 1.25;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: #ffffff;
            margin-bottom: 1.2rem;
        }
        @media (min-width: 768px) {
            .cat-hero h1 {
                font-size: 2.75rem;
            }
        }
        .cat-hero-sub {
            font-size: 1rem;
            color: #AEB7C5;
            max-width: 560px;
            line-height: 1.8;
            margin-bottom: 2rem;
        }
        .hero-cta {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .glass-panel {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 20px 40px rgba(0, 0, 0, 0.3);
            padding: 1.8rem;
            font-size: 0.95rem;
        }
        .cat-desc-title {
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: var(--color-accent);
            text-transform: uppercase;
            margin-bottom: 0.8rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .cat-desc-title::before {
            content: "";
            width: 18px;
            height: 1px;
            background: var(--color-accent);
            display: inline-block;
        }
        .cat-desc-text {
            color: #B8C1CF;
            font-size: 0.9rem;
            line-height: 1.8;
        }

        /* 板块标题 */
        .section-heading {
            text-align: center;
            margin-bottom: 2.5rem;
        }
        .section-heading h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: -0.01em;
            line-height: 1.3;
        }
        .section-heading p {
            color: var(--text-sub);
            font-size: 0.95rem;
            margin-top: 0.5rem;
        }
        .section-heading .heading-line {
            width: 56px;
            height: 3px;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            margin: 0.8rem auto 0;
        }

        /* 卡片网格 */
        .cat-cards {
            padding: 4.5rem 0;
            background: linear-gradient(180deg, var(--bg-body) 0%, var(--bg-light) 100%);
        }
        .cat-cards-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.75rem;
        }
        @media (min-width: 640px) {
            .cat-cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .cat-cards-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 2rem;
            }
        }
        .cat-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
            position: relative;
            display: flex;
            flex-direction: column;
        }
        .cat-card:hover {
            transform: translateY(-5px);
            border-color: rgba(255, 255, 255, 0.22);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35), 0 0 20px rgba(46, 107, 255, 0.1);
        }
        .cat-card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }
        .cat-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .cat-card:hover .cat-card-img img {
            transform: scale(1.04);
        }
        .cat-card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 15, 26, 0) 55%, rgba(11, 15, 26, 0.55) 100%);
        }
        .badge-soon {
            position: absolute;
            top: 0.8rem;
            right: 0.8rem;
            z-index: 3;
            background: rgba(255, 184, 77, 0.15);
            border: 1px solid rgba(255, 184, 77, 0.45);
            color: var(--color-amber);
            font-size: 0.72rem;
            font-weight: 600;
            padding: 0.2rem 0.7rem;
            border-radius: 16px;
            letter-spacing: 0.03em;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
        }
        .cat-card-num {
            position: absolute;
            top: 0.8rem;
            left: 0.8rem;
            z-index: 3;
            font-size: 0.75rem;
            font-weight: 700;
            color: rgba(255, 255, 255, 0.9);
            background: rgba(11, 15, 26, 0.55);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 8px;
            padding: 0.2rem 0.5rem;
            letter-spacing: 0.05em;
            backdrop-filter: blur(4px);
        }
        .cat-card-body {
            padding: 1.4rem 1.5rem 1.5rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .cat-card-tag {
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            color: var(--color-accent);
            text-transform: uppercase;
            margin-bottom: 0.5rem;
        }
        .cat-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: #ffffff;
            line-height: 1.4;
            margin-bottom: 0.5rem;
        }
        .cat-card-summary {
            font-size: 0.85rem;
            color: var(--text-sub);
            line-height: 1.7;
            flex: 1;
        }
        .cat-card-meta {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            margin-top: 1.2rem;
            padding-top: 0.8rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.75rem;
            color: #6B7A90;
        }
        .cat-card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .card-entry-cta {
            margin-top: 2.5rem;
            text-align: center;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
        }
        .card-entry-cta .btn-primary,
        .card-entry-cta .outline-link {
            font-size: 0.88rem;
        }

        /* 子分类标签 */
        .cat-tags {
            padding: 3rem 0;
            background: var(--bg-body);
        }
        .tags-row {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.75rem;
        }
        .tag-chip {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            padding: 0.5rem 1.2rem;
            border-radius: 24px;
            font-size: 0.85rem;
            font-weight: 500;
            color: #C6CDD8;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all 0.25s;
        }
        .tag-chip:hover {
            border-color: rgba(0, 224, 198, 0.4);
            color: var(--color-accent);
            background: rgba(0, 224, 198, 0.05);
        }
        .tag-chip .tag-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-accent);
            box-shadow: 0 0 6px rgba(0, 224, 198, 0.5);
        }

        /* 内容特色 */
        .cat-features {
            padding: 4.5rem 0;
            background: var(--bg-light);
            position: relative;
            overflow: hidden;
        }
        .cat-features::before {
            content: "";
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(46, 107, 255, 0.12) 0%, transparent 70%);
            bottom: -60px;
            left: -80px;
        }
        .cat-features .container-custom {
            position: relative;
            z-index: 1;
        }
        .features-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
            max-width: 1080px;
            margin: 0 auto;
        }
        @media (min-width: 768px) {
            .features-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 1.75rem;
            }
        }
        .feature-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            padding: 1.8rem 1.5rem;
            transition: all 0.3s ease;
            position: relative;
        }
        .feature-item:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: rgba(0, 224, 198, 0.3);
            transform: translateY(-3px);
            box-shadow: 0 16px 32px rgba(0, 0, 0, 0.3);
        }
        .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(46, 107, 255, 0.12);
            border: 1px solid rgba(46, 107, 255, 0.3);
            margin-bottom: 1rem;
            color: var(--color-primary);
        }
        .feature-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 0.6rem;
        }
        .feature-item p {
            font-size: 0.88rem;
            color: var(--text-sub);
            line-height: 1.7;
        }
        .feature-num {
            position: absolute;
            top: 1.5rem;
            right: 1.5rem;
            font-size: 0.8rem;
            font-weight: 700;
            color: rgba(255, 255, 255, 0.14);
            letter-spacing: 0.06em;
        }

        /* FAQ */
        .cat-faq {
            padding: 4.5rem 0;
            background: var(--bg-body);
        }
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            max-width: 1080px;
            margin: 0 auto;
        }
        @media (min-width: 1024px) {
            .faq-grid {
                grid-template-columns: 1fr 1.4fr;
                gap: 3rem;
                align-items: flex-start;
            }
        }
        .faq-left {
            position: sticky;
            top: 110px;
        }
        .faq-left h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        .faq-left p {
            color: var(--text-sub);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 1.8rem;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.85rem;
        }
        .faq-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 14px;
            overflow: hidden;
            transition: border-color 0.3s ease, background 0.3s ease;
        }
        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.18);
        }
        .faq-item[open] {
            border-color: rgba(46, 107, 255, 0.45);
            background: rgba(46, 107, 255, 0.03);
        }
        .faq-item summary {
            padding: 1rem 1.25rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: #E5EAF2;
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            transition: color 0.2s;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            color: var(--color-accent);
        }
        .faq-icon {
            width: 22px;
            height: 22px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.2);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            font-weight: 300;
            color: var(--text-sub);
            transition: all 0.3s;
            flex-shrink: 0;
        }
        .faq-item[open] .faq-icon {
            transform: rotate(45deg);
            border-color: var(--color-accent);
            color: var(--color-accent);
        }
        .faq-answer {
            padding: 0 1.25rem 1.2rem;
            font-size: 0.87rem;
            color: var(--text-sub);
            line-height: 1.75;
        }

        /* CTA */
        .cat-cta {
            padding: 5rem 0;
            background: linear-gradient(135deg, var(--bg-deep) 0%, #0A1A38 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }
        .cat-cta::before {
            content: "";
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 224, 198, 0.12) 0%, rgba(46, 107, 255, 0.08) 40%, transparent 70%);
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            pointer-events: none;
        }
        .cat-cta .container-custom {
            position: relative;
            z-index: 1;
        }
        .cat-cta h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: #ffffff;
            line-height: 1.35;
            max-width: 620px;
            margin: 0 auto 0.8rem;
        }
        .cat-cta p {
            color: #AEB7C5;
            font-size: 0.95rem;
            margin-bottom: 2rem;
        }
        .cta-btn-wrap {
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .cta-large-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--color-primary);
            color: #ffffff;
            font-size: 1.05rem;
            font-weight: 700;
            padding: 0.85rem 2.5rem;
            border-radius: 28px;
            box-shadow: 0 0 40px rgba(46, 107, 255, 0.6);
            transition: all 0.3s;
            border: none;
        }
        .cta-large-btn:hover {
            background: #3D79FF;
            box-shadow: 0 0 56px rgba(46, 107, 255, 0.8);
            transform: translateY(-2px);
            color: #ffffff;
        }
        .cta-note {
            margin-top: 1.2rem;
            font-size: 0.8rem;
            color: #6B7A90;
        }

        /* 页脚 */
        .site-footer {
            background: #060A11;
            border-top: 1px solid rgba(46, 107, 255, 0.25);
            padding-top: 4rem;
            padding-bottom: 2rem;
        }
        .site-footer .footer-title {
            font-size: 0.85rem;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }
        .site-footer .footer-link {
            display: block;
            font-size: 0.85rem;
            color: #6B7A90;
            padding: 0.3rem 0;
            transition: color 0.2s;
        }
        .site-footer .footer-link:hover {
            color: var(--color-accent);
        }
        .footer-contact {
            font-size: 0.85rem;
            color: #6B7A90;
            line-height: 1.8;
        }
        .footer-contact code {
            font-family: "SF Mono", "Fira Code", monospace;
            font-size: 0.78rem;
            background: rgba(255, 255, 255, 0.05);
            padding: 0.15rem 0.4rem;
            border-radius: 4px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            color: #8B96A8;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 3rem;
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.75rem;
            color: #5A6675;
        }
        .footer-bottom a {
            color: #8B96A8;
        }

        /* 通用动画 */
        @keyframes float-slow {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-8px);
            }
        }
        .float-slow {
            animation: float-slow 5s ease-in-out infinite;
        }

        /* 通用焦点样式 */
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* 背景网格装饰 */
        .grid-overlay {
            background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
            background-size: 44px 44px;
        }

/* roulang page: article */
:root {
            --bg: #0B0F1A;
            --bg-deep: #060A11;
            --bg-mid: #101828;
            --primary: #2E6BFF;
            --primary-light: #4D7FFF;
            --accent: #00E0C6;
            --amber: #FFB84D;
            --text: #E5EAF2;
            --text-dim: #8B96A8;
            --text-mute: #6B7280;
            --glass: rgba(255, 255, 255, 0.04);
            --glass-strong: rgba(255, 255, 255, 0.06);
            --border: rgba(255, 255, 255, 0.08);
            --border-strong: rgba(255, 255, 255, 0.14);
            --radius-card: 16px;
            --radius-btn: 12px;
            --shadow-glow: 0 0 24px rgba(46, 107, 255, 0.45);
            --shadow-card: 0 20px 60px rgba(0, 0, 0, 0.35);
            --font-sans: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--bg);
            color: var(--text);
            font-family: var(--font-sans);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font-family: inherit;
        }
        .container-custom {
            max-width: 80rem;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        @media (min-width: 640px) {
            .container-custom {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .container-custom {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        .glass-card {
            background: var(--glass);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), var(--shadow-card);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.7rem 1.75rem;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            box-shadow: 0 0 20px rgba(46, 107, 255, 0.4);
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: var(--primary-light);
            box-shadow: 0 0 30px rgba(46, 107, 255, 0.55);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: transparent;
            color: var(--text);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.7rem 1.75rem;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(255, 255, 255, 0.22);
            cursor: pointer;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-1px);
        }
        .btn-outline:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        /* ---------- Topbar ---------- */
        .topbar {
            background: var(--bg-deep);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            height: 36px;
            display: flex;
            align-items: center;
            font-size: 12px;
            color: var(--text-mute);
        }
        .topbar .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .topbar-domain {
            font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
            letter-spacing: 0.04em;
            color: #6b7a90;
        }
        .topbar-links {
            display: flex;
            gap: 1.25rem;
            align-items: center;
        }
        .topbar-links a {
            color: #7d889b;
            transition: color 0.2s;
        }
        .topbar-links a:hover {
            color: #fff;
        }
        @media (max-width: 640px) {
            .topbar-links {
                display: none;
            }
        }
        /* ---------- Nav ---------- */
        .nav-main {
            background: rgba(11, 15, 26, 0.75);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .nav-link {
            position: relative;
            display: inline-block;
            padding: 0.5rem 0.9rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: #b9c2d0;
            border-radius: 8px;
            transition: color 0.2s;
        }
        .nav-link:hover {
            color: #fff;
        }
        .nav-link.active {
            color: #fff;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0.9rem;
            right: 0.9rem;
            bottom: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--accent);
            box-shadow: 0 0 8px rgba(0, 224, 198, 0.7);
        }
        .outline-link {
            padding: 0.4rem 1rem;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.16);
            font-size: 0.85rem;
            color: #c8d0dd;
            transition: all 0.2s;
        }
        .outline-link:hover {
            border-color: var(--accent);
            color: var(--accent);
        }
        .mobile-burger {
            display: none;
        }
        @media (max-width: 1023px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-burger {
                display: flex;
            }
        }
        /* ---------- Mobile Drawer ---------- */
        .mobile-drawer {
            position: fixed;
            inset: 0;
            background: rgba(6, 10, 17, 0.7);
            backdrop-filter: blur(6px);
            z-index: 100;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s;
        }
        .mobile-drawer.open {
            opacity: 1;
            pointer-events: auto;
        }
        .drawer-panel {
            position: absolute;
            top: 0;
            right: 0;
            width: min(20rem, 86vw);
            height: 100%;
            background: #0d1424;
            border-left: 1px solid rgba(255, 255, 255, 0.08);
            padding: 2rem 1.5rem;
            transform: translateX(100%);
            transition: transform 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .mobile-drawer.open .drawer-panel {
            transform: translateX(0);
        }
        .drawer-close {
            align-self: flex-end;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.14);
            color: #fff;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            font-size: 1.15rem;
            cursor: pointer;
            margin-bottom: 1.5rem;
            transition: border-color 0.2s;
        }
        .drawer-close:hover {
            border-color: var(--accent);
            color: var(--accent);
        }
        .drawer-nav {
            display: flex;
            flex-direction: column;
            gap: 0.4rem;
            flex: 1;
        }
        .drawer-nav a {
            padding: 0.8rem 0.6rem;
            border-radius: 10px;
            font-size: 1rem;
            color: var(--text);
            transition: background 0.2s;
        }
        .drawer-nav a:hover {
            background: rgba(255, 255, 255, 0.06);
        }
        .drawer-buttons {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            margin-top: auto;
        }
        .drawer-buttons .btn-primary,
        .drawer-buttons .btn-outline {
            width: 100%;
        }
        /* ---------- Article Hero Band ---------- */
        .article-hero-band {
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .band-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
        }
        .band-mask {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 15, 26, 0.94) 0%, rgba(11, 15, 26, 0.78) 55%, rgba(11, 15, 26, 0.45) 100%);
        }
        .band-content {
            position: relative;
            z-index: 2;
            padding-top: 3rem;
            padding-bottom: 3rem;
        }
        @media (min-width: 768px) {
            .band-content {
                padding-top: 4rem;
                padding-bottom: 4rem;
            }
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.45rem;
            font-size: 0.82rem;
            color: var(--text-dim);
            margin-bottom: 1.25rem;
        }
        .breadcrumb a {
            color: #9aa5b5;
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .sep {
            color: #4b5565;
        }
        .breadcrumb .current {
            color: #c8d0dd;
            max-width: 320px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .article-kicker {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 0.75rem;
        }
        .article-kicker::before {
            content: '';
            width: 18px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            display: inline-block;
        }
        .article-hero-band h1 {
            font-size: 2rem;
            line-height: 1.25;
            font-weight: 700;
            letter-spacing: -0.015em;
            color: #fff;
            max-width: 800px;
            margin-bottom: 1rem;
        }
        @media (min-width: 768px) {
            .article-hero-band h1 {
                font-size: 2.75rem;
            }
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 0.9rem 1.5rem;
            align-items: center;
            font-size: 0.85rem;
            color: var(--text-dim);
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
        }
        .article-meta svg {
            width: 14px;
            height: 14px;
            color: var(--text-mute);
        }
        .cat-tag {
            display: inline-block;
            background: rgba(46, 107, 255, 0.14);
            border: 1px solid rgba(46, 107, 255, 0.3);
            color: #7ea2ff;
            font-size: 0.78rem;
            font-weight: 500;
            padding: 0.15rem 0.7rem;
            border-radius: 999px;
        }
        /* ---------- Article Body ---------- */
        .article-body-section {
            padding: 3.5rem 0 2.5rem;
        }
        @media (min-width: 768px) {
            .article-body-section {
                padding: 5rem 0 3rem;
            }
        }
        .article-main {
            max-width: 48rem;
            margin: 0 auto;
        }
        .article-content {
            background: rgba(255, 255, 255, 0.025);
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: 20px;
            padding: 2rem 1.75rem;
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 24px 80px rgba(0, 0, 0, 0.28);
            position: relative;
        }
        @media (min-width: 768px) {
            .article-content {
                padding: 3rem 3.25rem;
            }
        }
        .article-content::before {
            content: '';
            position: absolute;
            top: 14px;
            left: 14px;
            right: 14px;
            bottom: 14px;
            border: 1px solid rgba(255, 255, 255, 0.035);
            border-radius: 14px;
            pointer-events: none;
        }
        .article-content :where(p) {
            margin-bottom: 1.6rem;
            font-size: 1.05rem;
            line-height: 1.9;
            color: #dce3ef;
        }
        .article-content :where(h2) {
            font-size: 1.65rem;
            font-weight: 700;
            color: #fff;
            margin: 2.75rem 0 1.25rem;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }
        .article-content :where(h3) {
            font-size: 1.25rem;
            font-weight: 600;
            color: #f0f4fa;
            margin: 2.25rem 0 1rem;
            line-height: 1.45;
        }
        .article-content :where(ul) {
            margin: 0 0 1.6rem 0;
            padding-left: 1.5rem;
            list-style: none;
        }
        .article-content :where(ul li) {
            position: relative;
            padding-left: 0.5rem;
            margin-bottom: 0.6rem;
            color: #ced6e4;
        }
        .article-content :where(ul li)::before {
            content: '';
            position: absolute;
            left: -1.1rem;
            top: 0.65em;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 6px rgba(0, 224, 198, 0.5);
        }
        .article-content :where(ol) {
            margin: 0 0 1.6rem 0;
            padding-left: 1.6rem;
            list-style: decimal;
        }
        .article-content :where(ol li) {
            padding-left: 0.35rem;
            margin-bottom: 0.5rem;
            color: #ced6e4;
        }
        .article-content :where(blockquote) {
            border-left: 3px solid var(--accent);
            background: rgba(0, 224, 198, 0.055);
            padding: 1.15rem 1.5rem;
            border-radius: 0 12px 12px 0;
            margin: 1.75rem 0;
            font-style: italic;
            color: #bcc8d8;
        }
        .article-content :where(blockquote p) {
            margin-bottom: 0;
            color: #bcc8d8;
        }
        .article-content :where(a) {
            color: var(--primary-light);
            transition: color 0.2s;
        }
        .article-content :where(a:hover) {
            color: var(--accent);
            text-decoration: underline;
        }
        .article-content :where(img) {
            border-radius: 16px;
            margin: 2.25rem auto;
            border: 1px solid var(--border-strong);
            box-shadow: 0 16px 50px rgba(0, 0, 0, 0.4);
        }
        .article-content :where(pre) {
            background: #0d1424;
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 1.4rem 1.5rem;
            overflow-x: auto;
            margin: 1.75rem 0;
            font-size: 0.9rem;
            line-height: 1.7;
            font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
            color: #cfe3ff;
        }
        .article-content :where(code) {
            font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
            background: rgba(0, 224, 198, 0.08);
            color: var(--accent);
            padding: 0.15rem 0.4rem;
            border-radius: 6px;
            font-size: 0.9em;
        }
        .article-content :where(pre code) {
            background: none;
            color: inherit;
            padding: 0;
        }
        .article-content :where(hr) {
            border: none;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.16), transparent);
            margin: 2.75rem 0;
        }
        .article-content :where(table) {
            width: 100%;
            border-collapse: collapse;
            margin: 1.75rem 0;
            font-size: 0.9rem;
        }
        .article-content :where(th) {
            background: rgba(46, 107, 255, 0.12);
            border: 1px solid var(--border);
            padding: 0.75rem 1rem;
            text-align: left;
            font-weight: 600;
            color: #fff;
        }
        .article-content :where(td) {
            border: 1px solid rgba(255, 255, 255, 0.06);
            padding: 0.75rem 1rem;
            color: #c2ccdb;
        }
        /* Not Found */
        .not-found-card {
            text-align: center;
            padding: 3.5rem 1.5rem;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1rem;
        }
        .not-found-card svg {
            width: 48px;
            height: 48px;
            color: var(--text-mute);
        }
        .not-found-card p {
            font-size: 1.1rem;
            color: #9aa5b5;
        }
        /* ---------- Article Tools ---------- */
        .article-tools {
            margin-top: 2.5rem;
        }
        .share-row {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            flex-wrap: wrap;
            padding: 1.25rem 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .share-label {
            font-size: 0.82rem;
            color: var(--text-dim);
            margin-right: 0.25rem;
        }
        .share-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 0.45rem 1.1rem;
            border-radius: 999px;
            color: #c0c9d6;
            font-size: 0.82rem;
            cursor: pointer;
            transition: all 0.2s;
        }
        .share-btn:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(0, 224, 198, 0.06);
        }
        .share-btn svg {
            width: 14px;
            height: 14px;
        }
        .prev-next-row {
            display: grid;
            grid-template-columns: 1fr;
            gap: 0.75rem;
            padding-top: 1.5rem;
        }
        @media (min-width: 640px) {
            .prev-next-row {
                grid-template-columns: 1fr 1fr;
            }
        }
        .prev-next-item {
            display: flex;
            flex-direction: column;
            gap: 0.2rem;
            background: rgba(255, 255, 255, 0.025);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 14px;
            padding: 1rem 1.25rem;
            transition: all 0.2s;
        }
        .prev-next-item.disabled {
            opacity: 0.45;
            cursor: not-allowed;
        }
        .prev-next-item .direction {
            font-size: 0.78rem;
            color: var(--text-dim);
            letter-spacing: 0.04em;
        }
        .prev-next-item .title {
            font-size: 0.92rem;
            color: #d8deea;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        /* ---------- Related Section ---------- */
        .related-section {
            padding: 3.5rem 0 2rem;
        }
        @media (min-width: 768px) {
            .related-section {
                padding: 5rem 0 3rem;
            }
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
            margin-bottom: 2rem;
        }
        .section-head h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.01em;
            line-height: 1.3;
        }
        .section-head .sub {
            color: var(--text-dim);
            font-size: 0.9rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }
        @media (min-width: 640px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .related-card {
            background: var(--glass);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.3s ease;
            display: block;
        }
        .related-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.18);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
        }
        .card-media {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }
        .card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .related-card:hover .card-media img {
            transform: scale(1.04);
        }
        .card-media .media-mask {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 15, 26, 0) 60%, rgba(11, 15, 26, 0.55) 100%);
        }
        .media-badge {
            position: absolute;
            top: 0.75rem;
            left: 0.75rem;
            z-index: 2;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 0.2rem 0.8rem;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(6px);
            background: rgba(11, 15, 26, 0.5);
            color: #fff;
        }
        .media-badge.blue {
            background: rgba(46, 107, 255, 0.3);
            color: #dce6ff;
        }
        .media-badge.amber {
            background: rgba(255, 184, 77, 0.28);
            color: #ffe2b8;
        }
        .card-body {
            padding: 1.2rem 1.25rem 1.4rem;
        }
        .card-body h3 {
            font-size: 1.02rem;
            font-weight: 600;
            color: #f0f4fa;
            line-height: 1.4;
            margin-bottom: 0.6rem;
            transition: color 0.2s;
        }
        .related-card:hover .card-body h3 {
            color: var(--primary-light);
        }
        .card-body p {
            font-size: 0.85rem;
            color: var(--text-dim);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-foot {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 0.9rem;
            font-size: 0.78rem;
            color: var(--text-mute);
        }
        .card-foot .link {
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
            color: #9aa5b5;
            transition: color 0.2s;
        }
        .related-card:hover .card-foot .link {
            color: var(--accent);
        }
        .card-foot .link svg {
            width: 13px;
            height: 13px;
            transition: transform 0.2s;
        }
        .related-card:hover .card-foot .link svg {
            transform: translateX(3px);
        }
        /* ---------- FAQ ---------- */
        .faq-section {
            padding: 3rem 0;
        }
        @media (min-width: 768px) {
            .faq-section {
                padding: 4.5rem 0;
            }
        }
        .faq-layout {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        @media (min-width: 1024px) {
            .faq-layout {
                grid-template-columns: 0.9fr 1.6fr;
                gap: 3.5rem;
            }
        }
        .faq-intro h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 0.9rem;
        }
        .faq-intro p {
            color: var(--text-dim);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 1.25rem;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.85rem;
        }
        details.faq-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 14px;
            overflow: hidden;
            transition: border-color 0.25s;
        }
        details.faq-item[open] {
            border-color: rgba(46, 107, 255, 0.55);
            box-shadow: 0 0 20px rgba(46, 107, 255, 0.08);
        }
        details.faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1rem 1.25rem;
            cursor: pointer;
            font-size: 0.92rem;
            font-weight: 500;
            color: #e5eaf2;
            list-style: none;
        }
        details.faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.16);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            line-height: 1;
            color: var(--text-dim);
            transition: transform 0.3s, color 0.3s, border-color 0.3s;
        }
        details.faq-item[open] .faq-icon {
            transform: rotate(45deg);
            color: var(--accent);
            border-color: var(--accent);
        }
        .faq-answer {
            padding: 0 1.25rem 1.15rem;
            font-size: 0.88rem;
            color: #9aa5b5;
            line-height: 1.7;
        }
        /* ---------- Mini CTA ---------- */
        .mini-cta {
            padding: 2.5rem 0 4rem;
        }
        @media (min-width: 768px) {
            .mini-cta {
                padding: 3.5rem 0 5.5rem;
            }
        }
        .cta-panel {
            position: relative;
            border-radius: 24px;
            background: linear-gradient(135deg, rgba(46, 107, 255, 0.16) 0%, rgba(0, 224, 198, 0.08) 55%, rgba(11, 15, 26, 0.4) 100%);
            border: 1px solid rgba(46, 107, 255, 0.3);
            padding: 2.5rem 2rem;
            text-align: center;
            overflow: hidden;
        }
        @media (min-width: 768px) {
            .cta-panel {
                padding: 3.5rem 3rem;
            }
        }
        .cta-panel::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 224, 198, 0.25), transparent 70%);
            pointer-events: none;
        }
        .cta-panel h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.6rem;
        }
        @media (min-width: 768px) {
            .cta-panel h2 {
                font-size: 2rem;
            }
        }
        .cta-panel p {
            color: var(--text-dim);
            font-size: 0.92rem;
            max-width: 560px;
            margin: 0 auto 1.6rem;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: center;
        }
        .cta-note {
            margin-top: 1.2rem;
            font-size: 0.78rem;
            color: var(--text-mute);
            letter-spacing: 0.02em;
        }
        /* ---------- Footer ---------- */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            position: relative;
        }
        .site-footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, rgba(46, 107, 255, 0.6), rgba(0, 224, 198, 0.5), transparent);
        }
        .footer-title {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 0.9rem;
        }
        .footer-col a {
            display: block;
            color: #7d889b;
            font-size: 0.85rem;
            padding: 0.3rem 0;
            transition: color 0.2s;
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-contact {
            font-size: 0.85rem;
            color: #7d889b;
            line-height: 1.8;
        }
        .footer-contact code {
            color: #aeb8c8;
            background: rgba(255, 255, 255, 0.06);
            padding: 0.15rem 0.5rem;
            border-radius: 6px;
            font-family: ui-monospace, monospace;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 1.25rem 0;
            margin-top: 1rem;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 0.8rem;
            color: #5f6b7d;
        }
        .footer-bottom .copyright {
            color: #78839a;
        }
        @media (max-width: 640px) {
            .footer-grid {
                gap: 2rem;
            }
        }

/* roulang page: category2 */
:root {
      --color-primary: #2E6BFF;
      --color-accent: #00E0C6;
      --color-amber: #FFB84D;
      --color-bg-deep: #060A11;
      --color-bg-main: #0B0F1A;
      --color-bg-card: rgba(255,255,255,0.04);
      --color-border-card: rgba(255,255,255,0.08);
      --color-text-main: #E5EAF2;
      --color-text-sub: #8B96A8;
      --radius-card: 16px;
      --shadow-glow: 0 0 24px rgba(46,107,255,0.45);
      --shadow-glow-lg: 0 0 40px rgba(46,107,255,0.6);
      --font-sans: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-sans);
      background-color: var(--color-bg-main);
      color: var(--color-text-main);
      line-height: 1.6;
      font-size: 15px;
      -webkit-font-smoothing: antialiased;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      background: radial-gradient(circle at 15% 10%, rgba(46,107,255,0.08) 0%, transparent 45%),
                  radial-gradient(circle at 85% 80%, rgba(0,224,198,0.05) 0%, transparent 40%);
      pointer-events: none;
      z-index: 0;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease;
    }

    img {
      max-width: 100%;
      display: block;
    }

    button {
      font-family: inherit;
      cursor: pointer;
    }

    .container-custom {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 1.5rem;
    }

    @media (min-width: 640px) {
      .container-custom { padding: 0 1.5rem; }
    }
    @media (min-width: 1024px) {
      .container-custom { padding: 0 2rem; }
    }

    /* 导航 */
    .nav-main {
      background: rgba(11, 15, 26, 0.7);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(255,255,255,0.06);
      transition: background 0.3s ease;
      position: sticky;
      top: 0;
      z-index: 50;
    }

    .topbar {
      background: #060A11;
      border-bottom: 1px solid rgba(255,255,255,0.04);
      font-size: 12px;
      color: #8B96A8;
    }

    .topbar-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 36px;
    }

    .topbar-code {
      font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
      color: #8B96A8;
      letter-spacing: 0.02em;
    }

    .nav-link {
      position: relative;
      display: inline-block;
      padding: 0.5rem 0.9rem;
      font-size: 0.92rem;
      font-weight: 500;
      color: #B9C1CF;
      border-radius: 8px;
      transition: color 0.2s ease, background 0.2s ease;
    }

    .nav-link:hover {
      color: #ffffff;
      background: rgba(255,255,255,0.04);
    }

    .nav-link.active {
      color: #ffffff;
    }

    .nav-link.active::after {
      content: "";
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 22px;
      height: 2px;
      background: var(--color-accent);
      border-radius: 2px;
      box-shadow: 0 0 8px rgba(0,224,198,0.6);
    }

    .outline-link {
      border: 1px solid rgba(255,255,255,0.16);
      border-radius: 9999px;
      padding: 0.45rem 1.2rem;
      font-size: 0.85rem;
      color: #D7DEE8;
      transition: all 0.25s ease;
    }

    .outline-link:hover {
      border-color: rgba(0,224,198,0.6);
      color: var(--color-accent);
      box-shadow: 0 0 16px rgba(0,224,198,0.15);
    }

    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--color-primary);
      color: #ffffff;
      font-weight: 600;
      border-radius: 9999px;
      border: none;
      box-shadow: var(--shadow-glow);
      padding: 0.7rem 1.8rem;
      font-size: 0.95rem;
      transition: all 0.25s ease;
      line-height: 1.4;
    }

    .btn-primary:hover {
      background: #4A82FF;
      box-shadow: 0 0 32px rgba(46,107,255,0.65);
      transform: translateY(-1px);
    }

    .btn-primary:active {
      transform: translateY(0);
      box-shadow: 0 0 20px rgba(46,107,255,0.4);
    }

    .btn-primary:focus-visible,
    .outline-link:focus-visible,
    .nav-link:focus-visible {
      outline: 2px solid var(--color-accent);
      outline-offset: 2px;
    }

    .mobile-burger {
      display: none;
      color: #C6CFDA;
      background: rgba(255,255,255,0.02);
      transition: all 0.2s ease;
    }

    .mobile-burger:hover {
      color: #ffffff;
      border-color: rgba(255,255,255,0.2);
    }

    @media (max-width: 1023px) {
      .desktop-nav {
        display: none !important;
      }
      .mobile-burger {
        display: inline-flex;
      }
    }

    /* 移动端抽屉 */
    .mobile-drawer {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(6, 10, 17, 0.98);
      z-index: 90;
      padding: 1.5rem;
      flex-direction: column;
      overflow-y: auto;
    }

    .mobile-drawer.open {
      display: flex;
    }

    /* Hero */
    .hero-section {
      position: relative;
      min-height: 60vh;
      display: flex;
      align-items: center;
      background-image: linear-gradient(115deg, rgba(11,15,26,0.94) 35%, rgba(11,15,26,0.7) 70%, rgba(11,15,26,0.5) 100%), url('/assets/images/backpic/back-2.png');
      background-size: cover;
      background-position: center;
      padding: 4rem 0;
      overflow: hidden;
    }

    .hero-section::after {
      content: "";
      position: absolute;
      top: -120px;
      right: -80px;
      width: 380px;
      height: 380px;
      background: radial-gradient(circle, rgba(0,224,198,0.12) 0%, transparent 65%);
      pointer-events: none;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 184, 77, 0.1);
      border: 1px solid rgba(255, 184, 77, 0.25);
      color: var(--color-amber);
      border-radius: 9999px;
      padding: 0.35rem 1rem;
      font-size: 0.82rem;
      font-weight: 500;
      margin-bottom: 1.2rem;
    }

    .hero-title {
      font-size: clamp(2rem, 5vw, 3.2rem);
      font-weight: 800;
      letter-spacing: -0.02em;
      line-height: 1.2;
      margin-bottom: 1rem;
      color: #ffffff;
    }

    .hero-title .accent {
      color: var(--color-primary);
      background: linear-gradient(135deg, #FFFFFF 0%, #FFFFFF 35%, #2E6BFF 36%, #00E0C6 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-desc {
      font-size: 1.05rem;
      color: #BCC6D4;
      max-width: 560px;
      margin-bottom: 1.8rem;
      line-height: 1.7;
    }

    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 1rem;
      align-items: center;
    }

    /* 板块 */
    .section {
      padding: 4.5rem 0;
      position: relative;
    }

    .section-title {
      font-size: 1.8rem;
      font-weight: 700;
      letter-spacing: -0.01em;
      margin-bottom: 0.75rem;
      color: #ffffff;
    }

    .section-sub {
      color: var(--color-text-sub);
      max-width: 680px;
      margin-bottom: 2.5rem;
      line-height: 1.7;
    }

    /* 分类说明 */
    .intro-card {
      background: var(--color-bg-card);
      border: 1px solid var(--color-border-card);
      border-radius: var(--radius-card);
      backdrop-filter: blur(12px);
      padding: 2.2rem;
      line-height: 1.8;
      color: #C6D0DD;
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.06);
    }

    /* 卡片 */
    .card-static {
      background: rgba(255,255,255,0.03);
      border: 1px solid rgba(255,255,255,0.07);
      border-radius: var(--radius-card);
      overflow: hidden;
      transition: all 0.3s ease;
      height: 100%;
      display: flex;
      flex-direction: column;
    }

    .card-static:hover {
      transform: translateY(-4px);
      border-color: rgba(255,255,255,0.18);
      box-shadow: 0 12px 32px rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.08);
    }

    .card-img-wrap {
      position: relative;
      aspect-ratio: 16 / 10;
      overflow: hidden;
      background: #0B1018;
    }

    .card-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .card-static:hover .card-img-wrap img {
      transform: scale(1.04);
    }

    .card-body {
      padding: 1.4rem;
      display: flex;
      flex-direction: column;
      flex: 1;
      gap: 0.5rem;
    }

    .card-badge {
      display: inline-flex;
      align-items: center;
      gap: 5px;
      background: rgba(255,184,77,0.12);
      border: 1px solid rgba(255,184,77,0.3);
      color: var(--color-amber);
      font-size: 0.75rem;
      font-weight: 600;
      padding: 0.2rem 0.7rem;
      border-radius: 9999px;
      align-self: flex-start;
    }

    .card-title {
      font-size: 1.05rem;
      font-weight: 600;
      color: #ffffff;
      line-height: 1.4;
      margin: 0.2rem 0 0.3rem;
    }

    .card-desc {
      font-size: 0.88rem;
      color: var(--color-text-sub);
      line-height: 1.6;
      flex: 1;
    }

    .card-tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: 0.4rem;
    }

    .tag-chip {
      display: inline-block;
      font-size: 0.75rem;
      color: #B9C6D8;
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.06);
      padding: 0.15rem 0.65rem;
      border-radius: 9999px;
      transition: all 0.2s ease;
    }

    .tag-chip:hover {
      color: var(--color-accent);
      border-color: rgba(0,224,198,0.4);
    }

    /* 标签行 */
    .sub-tags-row {
      display: flex;
      flex-wrap: wrap;
      gap: 0.6rem;
      justify-content: center;
      margin-top: 1.5rem;
    }

    .sub-tag {
      display: inline-flex;
      align-items: center;
      padding: 0.4rem 1rem;
      border-radius: 9999px;
      font-size: 0.85rem;
      font-weight: 500;
      color: #AAB6C7;
      background: rgba(255,255,255,0.03);
      border: 1px solid rgba(255,255,255,0.08);
      transition: all 0.2s ease;
    }

    .sub-tag:hover {
      color: #ffffff;
      border-color: rgba(0,224,198,0.45);
      background: rgba(0,224,198,0.06);
    }

    /* 卖点 */
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(1, 1fr);
      gap: 1.5rem;
    }

    @media (min-width: 640px) {
      .feature-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (min-width: 1024px) {
      .feature-grid { grid-template-columns: repeat(4, 1fr); }
    }

    .feature-card {
      background: rgba(255,255,255,0.03);
      border: 1px solid rgba(255,255,255,0.07);
      border-radius: var(--radius-card);
      padding: 1.8rem 1.5rem;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .feature-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: linear-gradient(90deg, transparent, rgba(0,224,198,0.5), transparent);
      opacity: 0;
      transition: opacity 0.3s ease;
    }

    .feature-card:hover {
      border-color: rgba(255,255,255,0.15);
      background: rgba(255,255,255,0.05);
      transform: translateY(-3px);
    }

    .feature-card:hover::before {
      opacity: 1;
    }

    .feature-icon {
      width: 44px;
      height: 44px;
      border-radius: 12px;
      background: rgba(46,107,255,0.14);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1rem;
      color: var(--color-primary);
      border: 1px solid rgba(46,107,255,0.2);
    }

    .feature-card h3 {
      font-size: 1rem;
      font-weight: 600;
      color: #ffffff;
      margin-bottom: 0.5rem;
    }

    .feature-card p {
      font-size: 0.88rem;
      color: var(--color-text-sub);
      line-height: 1.65;
    }

    /* 场景 */
    .scene-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 1.5rem;
      margin-top: 2rem;
    }

    @media (min-width: 768px) {
      .scene-grid { grid-template-columns: repeat(3, 1fr); }
    }

    .scene-item {
      background: linear-gradient(135deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: var(--radius-card);
      padding: 1.8rem 1.5rem;
      transition: all 0.3s ease;
    }

    .scene-item:hover {
      border-color: rgba(46,107,255,0.35);
      box-shadow: 0 8px 24px rgba(0,0,0,0.25);
    }

    .scene-num {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--color-accent);
      letter-spacing: 0.08em;
      margin-bottom: 0.6rem;
    }

    .scene-item h3 {
      font-size: 1.05rem;
      font-weight: 600;
      color: #ffffff;
      margin-bottom: 0.5rem;
    }

    .scene-item p {
      font-size: 0.88rem;
      color: var(--color-text-sub);
      line-height: 1.65;
    }

    /* 流程 */
    .steps-row {
      display: grid;
      grid-template-columns: 1fr;
      gap: 1rem;
      margin-top: 2rem;
    }

    @media (min-width: 768px) {
      .steps-row { grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }
    }

    .step-item {
      background: rgba(255,255,255,0.02);
      border: 1px solid rgba(255,255,255,0.06);
      border-radius: var(--radius-card);
      padding: 1.6rem 1.3rem;
      text-align: center;
      position: relative;
    }

    .step-num {
      width: 36px;
      height: 36px;
      margin: 0 auto 0.8rem;
      border-radius: 50%;
      background: rgba(46,107,255,0.15);
      border: 1px solid rgba(46,107,255,0.35);
      color: var(--color-primary);
      font-weight: 700;
      font-size: 0.9rem;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .step-item h4 {
      font-size: 0.95rem;
      font-weight: 600;
      color: #ffffff;
      margin-bottom: 0.4rem;
    }

    .step-item p {
      font-size: 0.82rem;
      color: var(--color-text-sub);
      line-height: 1.55;
    }

    /* FAQ */
    .faq-wrap {
      display: grid;
      grid-template-columns: 1fr;
      gap: 2rem;
    }

    @media (min-width: 1024px) {
      .faq-wrap { grid-template-columns: 0.8fr 1.2fr; gap: 3rem; }
    }

    .faq-left h2 {
      font-size: 1.8rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 0.8rem;
    }

    .faq-left p {
      color: var(--color-text-sub);
      line-height: 1.7;
      margin-bottom: 1.2rem;
    }

    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 0.8rem;
    }

    .faq-item {
      background: rgba(255,255,255,0.03);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: 12px;
      overflow: hidden;
      transition: all 0.25s ease;
    }

    .faq-item:hover {
      border-color: rgba(255,255,255,0.14);
    }

    .faq-summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 1rem 1.3rem;
      cursor: pointer;
      font-weight: 500;
      color: #E0E6EF;
      font-size: 0.95rem;
      list-style: none;
      user-select: none;
    }

    .faq-summary::-webkit-details-marker {
      display: none;
    }

    .faq-icon {
      width: 22px;
      height: 22px;
      border-radius: 50%;
      border: 1px solid rgba(255,255,255,0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      color: #AAB6C7;
      transition: all 0.3s ease;
      font-size: 0.9rem;
    }

    .faq-item[open] .faq-icon {
      transform: rotate(45deg);
      border-color: var(--color-accent);
      color: var(--color-accent);
    }

    .faq-answer {
      padding: 0 1.3rem 1.1rem;
      font-size: 0.88rem;
      color: #98A4B7;
      line-height: 1.7;
    }

    /* CTA */
    .cta-section {
      position: relative;
      background: linear-gradient(135deg, #0B0F1A 0%, #0D1424 50%, #0B1020 100%);
      border: 1px solid rgba(255,255,255,0.06);
      border-radius: 24px;
      padding: 3.5rem 2rem;
      text-align: center;
      overflow: hidden;
    }

    .cta-section::before {
      content: "";
      position: absolute;
      top: -120px;
      left: 50%;
      transform: translateX(-50%);
      width: 500px;
      height: 300px;
      background: radial-gradient(ellipse, rgba(0,224,198,0.12) 0%, transparent 70%);
      pointer-events: none;
    }

    .cta-title {
      font-size: 2rem;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 0.8rem;
      position: relative;
    }

    .cta-desc {
      color: #AAB6C7;
      max-width: 540px;
      margin: 0 auto 1.8rem;
      position: relative;
      line-height: 1.7;
    }

    .cta-note {
      font-size: 0.82rem;
      color: #6B7688;
      margin-top: 1rem;
      position: relative;
    }

    /* 面包屑 */
    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 0.4rem;
      font-size: 0.82rem;
      color: #768296;
      margin-bottom: 1.5rem;
    }

    .breadcrumb a {
      color: #768296;
    }

    .breadcrumb a:hover {
      color: var(--color-accent);
    }

    .breadcrumb span {
      color: #9FACBF;
    }

    /* Footer */
    .site-footer {
      background: #060A11;
      border-top: 1px solid rgba(255,255,255,0.05);
      position: relative;
    }

    .site-footer::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(46,107,255,0.6), rgba(0,224,198,0.5), transparent);
    }

    .footer-title {
      font-size: 0.95rem;
      font-weight: 600;
      color: #E5EAF2;
      margin-bottom: 1rem;
    }

    .footer-link {
      display: block;
      font-size: 0.88rem;
      color: #7E899B;
      padding: 0.25rem 0;
      transition: color 0.2s ease;
    }

    .footer-link:hover {
      color: var(--color-accent);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.05);
      margin-top: 2rem;
      padding-top: 1.5rem;
      text-align: center;
      font-size: 0.82rem;
      color: #5E6A7C;
    }

    .footer-bottom .copy {
      color: #8A95A8;
    }

    .footer-bottom code {
      font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
      font-size: 0.78rem;
      background: rgba(255,255,255,0.05);
      padding: 0.1rem 0.4rem;
      border-radius: 4px;
      color: #8895A9;
    }

    /* 空态（不适用当前分类页但保留样式） */
    .release-chip {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      background: rgba(255,184,77,0.12);
      border: 1px solid rgba(255,184,77,0.3);
      color: var(--color-amber);
      font-size: 0.72rem;
      font-weight: 600;
      padding: 0.15rem 0.6rem;
      border-radius: 9999px;
      letter-spacing: 0.02em;
    }

    /* 响应式补强 */
    @media (max-width: 640px) {
      .section { padding: 3rem 0; }
      .hero-title { font-size: 1.9rem; }
      .hero-cta-group .btn-primary,
      .hero-cta-group .outline-link {
        width: 100%;
        text-align: center;
      }
      .card-body { padding: 1.1rem; }
      .cta-title { font-size: 1.5rem; }
      .intro-card { padding: 1.5rem; }
    }

    @media (max-width: 767px) {
      .topbar-inner {
        justify-content: space-between;
        height: 36px;
      }
      .topbar-right {
        display: none;
      }
    }

    /* 焦点可见性 */
    a:focus-visible,
    button:focus-visible,
    summary:focus-visible {
      outline: 2px solid var(--color-accent);
      outline-offset: 2px;
    }

    summary {
      cursor: pointer;
    }

.mobile-drawer { display: none !important; }
      .desktop-nav { display: flex !important; }
      .mobile-burger { display: none !important; }