/* roulang page: index */
:root {
  --bg-primary: #0A1128;
  --bg-secondary: #0B1D3A;
  --bg-footer: #060D1F;
  --brand: #2F6BFF;
  --brand-hover: #1D5CFF;
  --brand-active: #1A4FD6;
  --cyan: #38BDF8;
  --gold: #C9A961;
  --gold-light: #D9B96F;
  --text-main: #E6EDF7;
  --text-secondary: #A0B0C8;
  --text-muted: #6B7E9B;
  --border-default: rgba(255,255,255,0.12);
  --card-bg: rgba(255,255,255,0.06);
  --radius: 16px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.25);
  --space-section: clamp(4rem, 8vw, 7rem);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg-primary);
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
input { font-family: inherit; outline: none; }
ul, ol { list-style: none; }
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 16px;
  padding-right: 16px;
}
@media (min-width: 640px) {
  .container { padding-left: 24px; padding-right: 24px; }
}
@media (min-width: 1024px) {
  .container { padding-left: 32px; padding-right: 32px; }
}
.section-padding { padding: var(--space-section) 0; }
.glass {
  background: var(--card-bg);
  border: 1px solid var(--border-default);
  border-radius: var(--radius);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-card);
  transition: background 300ms ease, border-color 300ms ease, transform 300ms ease, box-shadow 300ms ease;
}
.glass:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.2);
  transform: translateY(-4px);
}
.glass-strong {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: var(--radius);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-card);
}
.glow-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #2F6BFF, #1A4FD6);
  color: #fff;
  border-radius: 12px;
  box-shadow: 0 0 24px rgba(47,107,255,0.35);
  transition: all 300ms ease;
  font-weight: 600;
}
.glow-btn:hover {
  box-shadow: 0 0 36px rgba(47,107,255,0.55);
  transform: translateY(-2px);
  color: #fff;
}
.glow-btn:active {
  transform: scale(0.98);
}
.glow-btn:focus-visible {
  outline: 3px solid rgba(47,107,255,0.5);
  outline-offset: 2px;
}
.gold-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #D9B96F, #C9A961);
  color: #0A1128;
  border-radius: 12px;
  box-shadow: 0 0 24px rgba(201,169,97,0.35);
  transition: all 300ms ease;
  font-weight: 700;
}
.gold-btn:hover {
  box-shadow: 0 0 36px rgba(201,169,97,0.55);
  transform: translateY(-2px);
  color: #0A1128;
}
.gold-btn:active {
  transform: scale(0.98);
}
.gold-btn:focus-visible {
  outline: 3px solid rgba(201,169,97,0.5);
  outline-offset: 2px;
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.18);
  color: var(--text-main);
  border-radius: 12px;
  transition: all 300ms ease;
  font-weight: 500;
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.3);
  transform: translateY(-2px);
}
.btn-secondary:active {
  transform: scale(0.98);
}
.btn-secondary:focus-visible {
  outline: 3px solid rgba(255,255,255,0.3);
  outline-offset: 2px;
}
.hero-mesh {
  background:
    radial-gradient(ellipse at 18% 22%, rgba(47,107,255,0.2) 0%, transparent 60%),
    radial-gradient(ellipse at 82% 12%, rgba(56,189,248,0.12) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 90%, rgba(201,169,97,0.06) 0%, transparent 45%),
    linear-gradient(180deg, #0A1128 0%, #0B1D3A 100%);
}
.hero-grid-overlay {
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
}
.hero-title {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.25;
  color: #fff;
}
.hero-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: var(--gold-light);
  font-weight: 600;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10,17,40,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: box-shadow 300ms ease;
}
.site-header:hover { box-shadow: 0 8px 30px rgba(0,0,0,0.3); }
.header-top {
  height: 42px;
  transition: height 300ms ease;
  overflow: hidden;
}
.header-nav {
  height: 56px;
  border-top: 1px solid rgba(255,255,255,0.06);
  transition: height 300ms ease;
}
.header-scrolled .header-top { height: 36px; }
.header-scrolled .hot-tags-wrap { display: none; }
.nav-link {
  display: inline-flex;
  align-items: center;
  height: 100%;
  padding: 0 16px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  transition: color 200ms ease, border-color 200ms ease, background 200ms ease;
  white-space: nowrap;
  position: relative;
}
.nav-link:hover {
  color: var(--text-main);
  background: rgba(255,255,255,0.04);
}
.nav-link.active {
  color: var(--gold-light);
  border-bottom-color: var(--gold);
  background: rgba(201,169,97,0.06);
}
.nav-link:focus-visible {
  outline: 2px solid rgba(201,169,97,0.6);
  outline-offset: -2px;
}
.search-input {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 10px;
  color: var(--text-main);
  font-size: 0.85rem;
  padding: 8px 38px 8px 14px;
  width: 220px;
  transition: border-color 200ms ease, box-shadow 200ms ease, background 200ms ease;
}
.search-input::placeholder { color: var(--text-muted); }
.search-input:focus {
  border-color: rgba(47,107,255,0.6);
  box-shadow: 0 0 0 3px rgba(47,107,255,0.2);
  background: rgba(255,255,255,0.08);
  outline: none;
}
.search-submit {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  color: var(--text-muted);
  transition: color 200ms ease, background 200ms ease;
}
.search-submit:hover { color: var(--text-main); background: rgba(255,255,255,0.08); }
.hot-tag {
  font-size: 0.72rem;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 999px;
  padding: 2px 10px;
  transition: all 200ms ease;
}
.hot-tag:hover {
  color: var(--cyan);
  border-color: rgba(56,189,248,0.4);
  background: rgba(56,189,248,0.08);
}
.hot-label {
  font-size: 0.72rem;
  color: var(--gold);
  font-weight: 600;
  letter-spacing: 0.05em;
}
.mobile-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(4px);
  z-index: 60;
  opacity: 0;
  visibility: hidden;
  transition: opacity 300ms ease, visibility 300ms ease;
}
.mobile-drawer-overlay.open { opacity: 1; visibility: visible; }
.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 320px;
  max-width: 85vw;
  background: #0B1D3A;
  border-left: 1px solid rgba(255,255,255,0.1);
  z-index: 70;
  transform: translateX(100%);
  transition: transform 300ms ease;
  display: flex;
  flex-direction: column;
  padding: 24px;
  overflow-y: auto;
}
.mobile-drawer.open { transform: translateX(0); }
.drawer-link {
  display: block;
  padding: 14px 12px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: all 200ms ease;
  border-radius: 10px;
}
.drawer-link:hover {
  color: var(--text-main);
  background: rgba(255,255,255,0.05);
  padding-left: 18px;
}
.drawer-link.active {
  color: var(--gold-light);
  background: rgba(201,169,97,0.08);
}
.benefit-table { border-collapse: collapse; width: 100%; min-width: 720px; }
.benefit-table th {
  padding: 16px 18px;
  text-align: left;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.benefit-table th.recommended {
  background: rgba(201,169,97,0.08);
  color: var(--gold-light);
  border-left: 1px solid rgba(201,169,97,0.2);
  border-right: 1px solid rgba(201,169,97,0.2);
  position: relative;
}
.benefit-table th.recommended::after {
  content: '推荐';
  display: inline-block;
  font-size: 0.65rem;
  background: linear-gradient(135deg, #D9B96F, #C9A961);
  color: #0A1128;
  border-radius: 999px;
  padding: 2px 8px;
  margin-left: 8px;
  font-weight: 700;
  vertical-align: middle;
}
.benefit-table td {
  padding: 16px 18px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.benefit-table td.recommended {
  background: rgba(201,169,97,0.04);
  color: var(--text-main);
  border-left: 1px solid rgba(201,169,97,0.2);
  border-right: 1px solid rgba(201,169,97,0.2);
}
.benefit-table tr:hover td { background: rgba(255,255,255,0.03); }
.benefit-table tr:hover td.recommended { background: rgba(201,169,97,0.08); }
.benefit-table tr:last-child td { border-bottom: none; }
.level-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  padding: 32px 0;
  border-bottom: 1px solid rgba(201,169,97,0.15);
}
.level-row:last-child { border-bottom: none; }
.level-num {
  font-size: 2.4rem;
  font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 1px rgba(201,169,97,0.5);
  line-height: 1;
  display: block;
}
.level-name { font-size: 1.3rem; font-weight: 700; color: #fff; }
.level-desc { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.8; }
@media (min-width: 1024px) {
  .level-row { grid-template-columns: 12% 38% 50%; align-items: center; }
  .level-row:nth-child(even) .level-num { order: 3; }
  .level-row:nth-child(even) .level-name { order: 2; }
  .level-row:nth-child(even) .level-desc { order: 1; }
  .level-num { font-size: 3rem; }
}
.news-item {
  transition: all 300ms ease;
  border-left: 3px solid transparent;
}
.news-item:hover {
  background: rgba(255,255,255,0.09);
  border-color: rgba(47,107,255,0.7);
  transform: translateX(4px);
}
.news-item-featured {
  border-left: none;
  background: linear-gradient(135deg, rgba(47,107,255,0.08), rgba(56,189,248,0.03));
}
.news-item-featured:hover {
  background: linear-gradient(135deg, rgba(47,107,255,0.14), rgba(56,189,248,0.06));
}
.news-category-badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.72rem;
  color: var(--gold-light);
  background: rgba(201,169,97,0.1);
  border: 1px solid rgba(201,169,97,0.25);
  border-radius: 999px;
  padding: 2px 10px;
  letter-spacing: 0.03em;
}
.news-date {
  font-size: 0.78rem;
  color: var(--text-muted);
}
.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.empty-state {
  border: 1px dashed rgba(255,255,255,0.15);
  border-radius: 16px;
  background: rgba(255,255,255,0.03);
  padding: 48px 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.95rem;
}
.exclusive-card .image-wrap {
  background-size: cover;
  background-position: center;
  background-color: rgba(255,255,255,0.05);
  padding-top: 60%;
  border-radius: 12px 12px 0 0;
  position: relative;
}
.badge-locked, .badge-unlocked {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.72rem;
  font-weight: 600;
  border-radius: 999px;
  padding: 3px 10px;
}
.badge-locked {
  color: var(--text-secondary);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
}
.badge-unlocked {
  color: #38E1D0;
  background: rgba(56,225,208,0.08);
  border: 1px solid rgba(56,225,208,0.25);
}
.badge-unlocked::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #38E1D0;
}
.faq-item {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color 300ms ease, background 300ms ease;
}
.faq-item.active {
  border-color: rgba(201,169,97,0.4);
  background: rgba(255,255,255,0.06);
}
.faq-question {
  width: 100%;
  text-align: left;
  padding: 18px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: color 200ms ease;
}
.faq-question:hover { color: var(--gold-light); }
.faq-question::after {
  content: '+';
  font-size: 1.3rem;
  color: var(--text-muted);
  transition: transform 300ms ease, color 300ms ease;
  flex-shrink: 0;
  line-height: 1;
}
.faq-item.active .faq-question::after {
  content: '−';
  color: var(--gold);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 400ms ease;
}
.faq-answer p {
  padding: 0 20px 18px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.75;
}
.site-footer {
  background: var(--bg-footer);
  border-top: 1px solid rgba(201,169,97,0.3);
  margin-top: 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding-top: 56px;
  padding-bottom: 40px;
}
@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 24px; }
}
.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: 0.03em;
}
.footer-col a {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 4px 0;
  transition: color 200ms ease, padding-left 200ms ease;
}
.footer-col a:hover {
  color: var(--gold-light);
  padding-left: 6px;
}
.footer-col p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 4px 0;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 22px 0;
  text-align: center;
}
.footer-bottom p {
  font-size: 0.78rem;
  color: var(--text-muted);
}
.cta-banner {
  background: linear-gradient(135deg, rgba(201,169,97,0.12), rgba(255,255,255,0.04));
  border: 1px solid rgba(201,169,97,0.25);
  border-radius: 20px;
  padding: 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at 20% 20%, rgba(201,169,97,0.1) 0%, transparent 50%);
  pointer-events: none;
}
@media (min-width: 768px) {
  .cta-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    text-align: left;
    padding: 48px 56px;
  }
}
.tag-item {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 999px;
  padding: 3px 12px;
  margin: 0 8px 8px 0;
  transition: all 200ms ease;
}
.tag-item:hover {
  color: var(--cyan);
  border-color: rgba(56,189,248,0.3);
}
:focus-visible {
  outline: 2px solid rgba(47,107,255,0.6);
  outline-offset: 2px;
}

/* roulang page: category1 */
:root {
            --primary: #2F6BFF;
            --primary-hover: #1D5CFF;
            --primary-active: #1A4FD6;
            --accent: #38BDF8;
            --gold: #C9A961;
            --gold-light: #D9B96F;
            --bg-dark: #0A1128;
            --bg-secondary: #0B1D3A;
            --footer-bg: #060D1F;
            --text-main: #E6EDF7;
            --text-muted: #A0B0C8;
            --text-weak: #6B7E9B;
            --border-glass: rgba(255, 255, 255, 0.12);
            --card-bg: rgba(255, 255, 255, 0.06);
            --radius: 16px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.25);
            --transition: 300ms ease;
        }
        * {
            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", sans-serif;
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(10, 17, 40, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
            transition: box-shadow .3s;
        }
        .site-header.scrolled {
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
        }
        .header-top {
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: height .3s;
        }
        .site-header.scrolled .header-top {
            height: 36px;
        }
        .site-header.scrolled .trending-entry {
            display: none;
        }
        .header-nav {
            height: 56px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            overflow-x: auto;
            overflow-y: hidden;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .header-nav::-webkit-scrollbar {
            display: none;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            height: 100%;
            padding: 0 1.1rem;
            font-size: 0.9rem;
            color: var(--text-muted);
            white-space: nowrap;
            border-bottom: 2px solid transparent;
            transition: color 0.3s, border-color 0.3s;
            flex-shrink: 0;
        }
        .nav-link:hover {
            color: var(--text-main);
        }
        .nav-link.active {
            color: #fff;
            border-bottom-color: var(--primary);
            font-weight: 500;
        }

        /* 搜索 */
        .search-box {
            position: relative;
            display: flex;
            align-items: center;
            background: rgba(0, 0, 0, 0.35);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 999px;
            padding: 5px 14px;
            width: 240px;
            transition: border-color .3s, box-shadow .3s, width .3s;
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(47, 107, 255, 0.2);
            width: 280px;
        }
        .search-input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-main);
            font-size: 0.8rem;
            width: 100%;
            padding: 2px 0 2px 8px;
        }
        .search-input::placeholder {
            color: var(--text-weak);
        }
        .search-icon-btn {
            display: none;
            background: transparent;
            border: none;
            color: var(--text-muted);
            padding: 6px;
            border-radius: 8px;
            transition: color .3s, background .3s;
        }
        .search-icon-btn:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.08);
        }

        /* 热词 */
        .trending-entry {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.72rem;
            color: var(--text-weak);
        }
        .trending-entry .hot-label {
            color: var(--gold);
            font-weight: 500;
        }
        .trending-entry a {
            color: var(--text-muted);
            padding: 2px 8px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 999px;
            transition: border-color .3s, color .3s;
        }
        .trending-entry a:hover {
            border-color: var(--gold);
            color: var(--gold-light);
        }

        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            background: transparent;
            border: none;
            color: var(--text-main);
            padding: 6px;
            border-radius: 8px;
        }
        .mobile-menu-btn:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        /* 移动端抽屉 */
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(6, 13, 31, 0.75);
            backdrop-filter: blur(4px);
            z-index: 90;
            opacity: 0;
            visibility: hidden;
            transition: opacity .3s, visibility .3s;
        }
        .drawer-overlay.open {
            opacity: 1;
            visibility: visible;
        }
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            width: min(320px, 85vw);
            background: #0B1D3A;
            border-left: 1px solid rgba(255, 255, 255, 0.08);
            z-index: 100;
            transform: translateX(100%);
            transition: transform .4s cubic-bezier(.22, .61, .36, 1);
            display: flex;
            flex-direction: column;
            padding: 24px 20px;
            overflow-y: auto;
        }
        .mobile-drawer.open {
            transform: translateX(0);
        }
        .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
            padding-bottom: 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .drawer-close {
            background: transparent;
            border: none;
            color: var(--text-muted);
            padding: 6px;
            border-radius: 8px;
        }
        .drawer-close:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.08);
        }
        .drawer-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .drawer-nav a {
            padding: 10px 12px;
            border-radius: 10px;
            font-size: 0.95rem;
            color: var(--text-muted);
            transition: background .3s, color .3s;
        }
        .drawer-nav a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-main);
        }
        .drawer-nav a.active {
            background: rgba(47, 107, 255, 0.15);
            color: #fff;
            font-weight: 500;
        }
        .drawer-search {
            margin-top: 20px;
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .drawer-hot {
            margin-top: 16px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .drawer-hot a {
            font-size: 0.75rem;
            color: var(--text-muted);
            padding: 4px 12px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 999px;
            transition: border-color .3s, color .3s;
        }
        .drawer-hot a:hover {
            border-color: var(--gold);
            color: var(--gold-light);
        }

        /* ===== Hero ===== */
        .category-hero {
            padding: clamp(2.5rem, 5vw, 4rem) 0 2rem;
            position: relative;
            background:
                radial-gradient(ellipse at 15% 0%, rgba(47, 107, 255, 0.2) 0%, transparent 55%),
                radial-gradient(ellipse at 85% 100%, rgba(201, 169, 97, 0.1) 0%, transparent 50%),
                linear-gradient(180deg, #0B1D3A 0%, #0A1128 100%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            color: var(--text-weak);
        }
        .breadcrumb a {
            color: var(--text-muted);
            transition: color .3s;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.2);
        }

        /* ===== 卡片 ===== */
        .glass-card {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: background .3s, border-color .3s, transform .3s, box-shadow .3s;
        }
        .glass-card:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
        }
        .glass-card-static {
            background: var(--card-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
        }

        /* ===== 按钮 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 10px 24px;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, #2F6BFF, #1D5CFF);
            border: none;
            box-shadow: 0 0 20px rgba(47, 107, 255, 0.3);
            transition: box-shadow .3s, transform .2s, background .3s;
            cursor: pointer;
        }
        .btn-primary:hover {
            box-shadow: 0 0 36px rgba(47, 107, 255, 0.55);
            background: linear-gradient(135deg, #3D76FF, #2F6BFF);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 10px 24px;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(10px);
            transition: background .3s, border-color .3s, transform .2s;
            cursor: pointer;
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.35);
        }
        .btn-ghost:active {
            transform: scale(0.98);
        }
        .btn-ghost:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-gold {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 12px 32px;
            border-radius: 999px;
            font-size: 0.95rem;
            font-weight: 600;
            color: #1A1405;
            background: linear-gradient(135deg, #D9B96F, #C9A961);
            border: none;
            box-shadow: 0 0 24px rgba(201, 169, 97, 0.3);
            transition: box-shadow .3s, transform .2s, background .3s;
            cursor: pointer;
        }
        .btn-gold:hover {
            box-shadow: 0 0 40px rgba(201, 169, 97, 0.5);
            background: linear-gradient(135deg, #E2C580, #D9B96F);
        }
        .btn-gold:active {
            transform: scale(0.98);
        }
        .btn-gold:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 2px;
        }

        /* ===== 徽章 ===== */
        .badge-gold {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 0.72rem;
            font-weight: 500;
            letter-spacing: 0.05em;
            color: var(--gold-light);
            background: rgba(201, 169, 97, 0.12);
            border: 1px solid rgba(201, 169, 97, 0.3);
        }
        .badge-blue {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 0.72rem;
            font-weight: 500;
            letter-spacing: 0.05em;
            color: var(--accent);
            background: rgba(56, 189, 248, 0.08);
            border: 1px solid rgba(56, 189, 248, 0.25);
        }

        /* ===== 图标盒 ===== */
        .icon-box {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--gold-light);
            background: rgba(201, 169, 97, 0.1);
            border: 1px solid rgba(201, 169, 97, 0.2);
            flex-shrink: 0;
        }

        /* ===== 编号行 ===== */
        .highlight-row {
            display: flex;
            gap: 24px;
            padding: 28px 0;
            align-items: flex-start;
        }
        .highlight-row .num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            font-weight: 700;
            color: var(--gold);
            background: rgba(201, 169, 97, 0.08);
            border: 1px solid rgba(201, 169, 97, 0.3);
            flex-shrink: 0;
        }
        .gold-line {
            height: 1px;
            background: linear-gradient(90deg, rgba(201, 169, 97, 0.4), transparent 70%);
        }

        /* ===== 流程 ===== */
        .step-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            padding: 24px 20px;
            text-align: center;
            position: relative;
            transition: background .3s, border-color .3s;
        }
        .step-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(47, 107, 255, 0.3);
        }
        .step-number {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, #2F6BFF, #1D5CFF);
            margin: 0 auto 14px;
            box-shadow: 0 0 14px rgba(47, 107, 255, 0.4);
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 14px;
            transition: border-color .3s, background .3s;
            overflow: hidden;
        }
        .faq-item.active {
            border-color: rgba(47, 107, 255, 0.4);
            background: rgba(255, 255, 255, 0.06);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            background: transparent;
            border: none;
            color: var(--text-main);
            font-size: 0.95rem;
            font-weight: 500;
            text-align: left;
            transition: color .3s;
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: -2px;
            border-radius: 14px;
        }
        .faq-icon {
            width: 20px;
            height: 20px;
            position: relative;
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            background: var(--text-muted);
            border-radius: 2px;
            transition: transform .3s, background .3s;
        }
        .faq-icon::before {
            width: 10px;
            height: 2px;
            top: 9px;
            left: 5px;
        }
        .faq-icon::after {
            width: 2px;
            height: 10px;
            top: 5px;
            left: 9px;
        }
        .faq-item.active .faq-icon::after {
            transform: scaleY(0);
        }
        .faq-item.active .faq-icon::before {
            background: var(--accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease, padding .3s ease;
            padding: 0 22px;
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-bottom: 18px;
        }

        /* ===== CTA横条 ===== */
        .cta-bar {
            border-radius: 18px;
            background: linear-gradient(135deg, rgba(201, 169, 97, 0.12), rgba(47, 107, 255, 0.08));
            border: 1px solid rgba(201, 169, 97, 0.25);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--footer-bg);
            border-top: 1px solid rgba(201, 169, 97, 0.25);
            padding-top: 48px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 32px;
        }
        .footer-col h4 {
            color: var(--text-main);
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 0.85rem;
            padding: 4px 0;
            transition: color .3s;
        }
        .footer-col a:hover {
            color: var(--gold-light);
        }
        .footer-col p {
            color: var(--text-muted);
            font-size: 0.85rem;
            line-height: 1.8;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 18px 0;
            text-align: center;
        }
        .footer-bottom p {
            color: var(--text-weak);
            font-size: 0.78rem;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .header-nav {
                display: none;
            }
            .mobile-menu-btn {
                display: block;
            }
            .search-box {
                display: none;
            }
            .search-icon-btn {
                display: block;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .highlight-row {
                gap: 16px;
            }
            .highlight-row .num {
                width: 40px;
                height: 40px;
                font-size: 0.85rem;
            }
        }

        /* ===== 区块标题 ===== */
        .section-head h2 {
            font-size: clamp(1.75rem, 3vw, 2.25rem);
            font-weight: 700;
            line-height: 1.3;
        }
        .section-head p {
            color: var(--text-muted);
            margin-top: 8px;
            font-size: 0.95rem;
        }
        .section-head .gold-bar {
            width: 40px;
            height: 3px;
            background: linear-gradient(90deg, var(--gold), transparent);
            border-radius: 2px;
            margin-bottom: 16px;
        }

        /* ===== 摘要列表 ===== */
        .summary-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 16px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: padding-left .3s;
        }
        .summary-item:last-child {
            border-bottom: none;
        }
        .summary-item:hover {
            padding-left: 6px;
        }
        .summary-item .summary-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(47, 107, 255, 0.1);
            border: 1px solid rgba(47, 107, 255, 0.2);
            flex-shrink: 0;
        }

        /* ===== 小卡流 ===== */
        .mini-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 14px;
            overflow: hidden;
            transition: border-color .3s, transform .3s, box-shadow .3s;
        }
        .mini-card:hover {
            border-color: rgba(201, 169, 97, 0.3);
            transform: translateY(-4px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
        }

        /* 焦点图 */
        .focus-card {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            min-height: 420px;
            display: flex;
            align-items: flex-end;
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
        }
        .focus-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .focus-card .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 17, 40, 0.2) 0%, rgba(10, 17, 40, 0.75) 70%, #0A1128 100%);
        }
        .focus-card .content {
            position: relative;
            z-index: 2;
            padding: 36px;
        }

/* roulang page: article */
:root {
    --bg-deep: #0A1128;
    --bg-deep2: #0B1D3A;
    --bg-footer: #060D1F;
    --brand: #2F6BFF;
    --brand-hover: #1D5CFF;
    --brand-active: #1A4FD6;
    --cyan: #38BDF8;
    --gold: #C9A961;
    --gold-light: #D9B96F;
    --text-main: #E6EDF7;
    --text-muted: #A0B0C8;
    --text-weak: #6B7E9B;
    --border-glass: rgba(255,255,255,0.12);
    --bg-glass: rgba(255,255,255,0.06);
    --radius: 16px;
    --shadow-card: 0 8px 32px rgba(0,0,0,0.25);
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-sans);
    background: var(--bg-deep);
    color: var(--text-main);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input { font-family: inherit; }
ul, ol { list-style: none; }
.container { width: 100%; max-width: 1280px; margin: 0 auto; padding-left: 16px; padding-right: 16px; }

/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(10,17,40,0.82);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    transition: background .3s ease;
}
.header-top { height: 42px; transition: height .3s ease; overflow: hidden; }
.header-bottom { height: 56px; border-top: 1px solid rgba(255,255,255,0.06); }
.site-header.scrolled .header-top { height: 36px; }
.site-header.scrolled .hot-word-group { opacity: 0; visibility: hidden; }
.hot-word-group { transition: opacity .3s ease, visibility .3s ease; }
.header-nav { height: 100%; display: flex; align-items: center; overflow-x: auto; scrollbar-width: none; }
.header-nav::-webkit-scrollbar { display: none; }
.header-nav .container { display: flex; align-items: center; height: 100%; gap: 0; overflow-x: auto; scrollbar-width: none; }
.header-nav .container::-webkit-scrollbar { display: none; }
.header-nav .nav-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    height: 56px;
    padding: 0 18px;
    font-size: 14px;
    color: var(--text-muted);
    white-space: nowrap;
    transition: color .3s, background .3s;
}
.header-nav .nav-link:hover { color: #fff; background: rgba(255,255,255,0.05); }
.header-nav .nav-link.active { color: #fff; }
.header-nav .nav-link.active::after {
    content: '';
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--brand), var(--cyan));
    border-radius: 2px 2px 0 0;
}
.header-search { position: relative; }
.header-search input {
    width: 220px;
    padding: 7px 12px 7px 32px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 10px;
    color: var(--text-main);
    font-size: 13px;
    outline: none;
    transition: border-color .3s, box-shadow .3s;
}
.header-search input::placeholder { color: var(--text-weak); }
.header-search input:focus { border-color: rgba(47,107,255,0.7); box-shadow: 0 0 0 3px rgba(47,107,255,0.2); }
.header-search .search-icon { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); color: var(--text-weak); pointer-events: none; }
.hot-tag {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    font-size: 12px;
    border-radius: 999px;
    color: var(--text-muted);
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.08);
    transition: all .3s ease;
    white-space: nowrap;
}
.hot-tag:hover { color: var(--gold-light); border-color: rgba(201,169,97,0.4); background: rgba(201,169,97,0.1); }

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 22px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    line-height: 1;
    transition: all .3s ease;
    border: 1px solid transparent;
}
.btn:focus-visible { outline: 3px solid rgba(47,107,255,0.5); outline-offset: 2px; }
.btn-primary {
    background: linear-gradient(135deg, var(--brand), #1A4FD6);
    color: #fff;
    box-shadow: 0 0 24px rgba(47,107,255,0.35);
}
.btn-primary:hover { box-shadow: 0 0 34px rgba(47,107,255,0.55); transform: translateY(-1px); }
.btn-primary:active { transform: scale(0.98); }
.btn-outline {
    background: rgba(255,255,255,0.05);
    border-color: rgba(255,255,255,0.18);
    color: var(--text-main);
    backdrop-filter: blur(8px);
}
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.3); }
.btn-outline:active { transform: scale(0.98); }

/* ===== Breadcrumb ===== */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-weak);
    padding-top: 28px;
    padding-bottom: 8px;
    overflow-x: auto;
    white-space: nowrap;
}
.breadcrumb a { color: var(--text-muted); transition: color .3s; flex-shrink: 0; }
.breadcrumb a:hover { color: var(--gold-light); }
.breadcrumb .current { color: var(--text-weak); overflow: hidden; text-overflow: ellipsis; max-width: 320px; flex-shrink: 1; }

/* ===== Article Card ===== */
.article-card {
    background: rgba(10,17,40,0.75);
    border: 1px solid rgba(255,255,255,0.09);
    border-radius: 20px;
    box-shadow: var(--shadow-card);
    padding: clamp(24px, 4vw, 52px);
    max-width: 860px;
    margin: 16px auto 0;
}
.article-card h1 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    line-height: 1.3;
    color: #fff;
    margin-bottom: 20px;
}
.article-card.not-found h1 { font-size: clamp(1.75rem, 3vw, 2.25rem); }
.article-card.not-found p { color: var(--text-muted); margin-bottom: 24px; font-size: 16px; }
.article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-muted);
    padding-bottom: 20px;
    margin-bottom: 28px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.meta-cat { color: var(--gold-light); font-weight: 600; transition: color .3s; }
.meta-cat:hover { color: var(--gold); }
.meta-dot { color: var(--text-weak); }

/* ===== Article Body ===== */
.article-body {
    font-size: 18px;
    line-height: 1.8;
    color: var(--text-main);
}
.article-body > * { margin-bottom: 1.5rem; }
.article-body h2 {
    font-size: clamp(1.5rem, 2vw, 1.75rem);
    font-weight: 700;
    margin-top: 2.25rem;
    margin-bottom: 1rem;
    color: #fff;
    line-height: 1.3;
    padding-left: 12px;
    border-left: 3px solid var(--gold);
}
.article-body h3 {
    font-size: clamp(1.25rem, 1.5vw, 1.4rem);
    font-weight: 600;
    margin-top: 1.75rem;
    margin-bottom: 0.875rem;
    color: #fff;
}
.article-body p { color: var(--text-main); }
.article-body a { color: var(--cyan); text-decoration: underline; text-underline-offset: 2px; transition: color .3s; }
.article-body a:hover { color: var(--gold-light); }
.article-body blockquote {
    margin: 1.75rem 0;
    padding: 16px 20px;
    background: rgba(201,169,97,0.06);
    border-left: 3px solid var(--gold);
    border-radius: 0 12px 12px 0;
    color: var(--text-muted);
}
.article-body img { border-radius: 12px; margin: 1.5rem auto; box-shadow: var(--shadow-card); }
.article-body ul, .article-body ol { padding-left: 1.25rem; margin-bottom: 1.5rem; }
.article-body ul li { list-style: disc; margin-bottom: 0.5rem; }
.article-body ol li { list-style: decimal; margin-bottom: 0.5rem; }
.article-body table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; font-size: 15px; display: block; overflow-x: auto; }
.article-body th { background: rgba(255,255,255,0.06); color: #fff; text-align: left; padding: 12px 14px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.article-body td { padding: 12px 14px; border-bottom: 1px solid rgba(255,255,255,0.07); }
.article-body code { background: rgba(0,0,0,0.3); padding: 2px 6px; border-radius: 6px; font-size: 0.9em; }
.article-body pre { background: var(--bg-footer); padding: 18px; border-radius: 12px; overflow-x: auto; margin: 1.5rem 0; }
.article-body pre code { background: none; padding: 0; }

/* ===== Tags ===== */
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.08);
}
.tag {
    display: inline-flex;
    align-items: center;
    padding: 6px 12px;
    font-size: 13px;
    border-radius: 999px;
    color: var(--text-muted);
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    transition: all .3s;
}
.tag:hover { color: var(--gold-light); border-color: rgba(201,169,97,0.4); }

/* ===== Related ===== */
.related-section { padding: clamp(3rem, 6vw, 5rem) 0 0; }
.section-head { margin-bottom: 28px; }
.section-head h2 { font-size: clamp(1.75rem, 3vw, 2.25rem); font-weight: 700; color: #fff; line-height: 1.3; margin-bottom: 6px; }
.section-head p { color: var(--text-muted); font-size: 15px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.related-card {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px;
    transition: all .3s ease;
    align-items: center;
}
.related-card:hover { background: rgba(255,255,255,0.09); border-color: rgba(255,255,255,0.2); transform: translateY(-4px); }
.related-card img { width: 130px; height: 88px; border-radius: 12px; flex-shrink: 0; object-fit: cover; }
.related-card h3 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.related-card p { color: var(--text-muted); font-size: 14px; line-height: 1.6; }

/* ===== Footer ===== */
.site-footer {
    background: var(--bg-footer);
    border-top: 1px solid rgba(201,169,97,0.4);
    margin-top: clamp(4rem, 8vw, 7rem);
}
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding: 64px 16px 40px; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 16px; }
.footer-col a { display: block; color: var(--text-muted); font-size: 14px; padding: 5px 0; transition: color .3s; }
.footer-col a:hover { color: var(--gold-light); }
.footer-col p { color: var(--text-muted); font-size: 14px; margin-bottom: 6px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.07); padding: 20px 0; text-align: center; }
.footer-bottom p { color: var(--text-weak); font-size: 13px; }

/* ===== Mobile Drawer ===== */
.mobile-drawer {
    position: fixed;
    top: 0;
    right: -100%;
    width: 310px;
    max-width: 85vw;
    height: 100vh;
    background: var(--bg-deep2);
    z-index: 100;
    transition: right .35s ease;
    padding: 24px;
    border-left: 1px solid rgba(255,255,255,0.1);
    overflow-y: auto;
    box-shadow: -12px 0 40px rgba(0,0,0,0.4);
}
.mobile-drawer.open { right: 0; }
.drawer-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 90;
    opacity: 0;
    visibility: hidden;
    transition: all .35s ease;
}
.drawer-overlay.open { opacity: 1; visibility: visible; }
.drawer-nav a {
    display: block;
    padding: 13px 0;
    font-size: 15px;
    color: var(--text-muted);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    transition: color .3s, padding-left .3s;
}
.drawer-nav a:hover, .drawer-nav a.active { color: var(--gold-light); padding-left: 6px; }
.drawer-search input {
    width: 100%;
    padding: 10px 14px 10px 36px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 10px;
    color: #fff;
    outline: none;
    transition: border-color .3s, box-shadow .3s;
}
.drawer-search input:focus { border-color: rgba(47,107,255,0.6); box-shadow: 0 0 0 3px rgba(47,107,255,0.2); }
.drawer-search { position: relative; }
.drawer-search .search-icon { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--text-weak); pointer-events: none; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .header-bottom { display: none; }
    .mobile-toggle-btn { display: inline-flex; }
}
@media (min-width: 1025px) {
    .mobile-toggle-btn { display: none; }
}
@media (max-width: 900px) {
    .related-grid { grid-template-columns: 1fr; }
    .article-card { padding: 24px; }
}
@media (max-width: 768px) {
    .footer-grid { grid-template-columns: 1fr 1fr; padding: 48px 16px 32px; }
    .article-body { font-size: 16px; }
}
@media (max-width: 640px) {
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .related-card { flex-direction: column; align-items: flex-start; }
    .related-card img { width: 100%; height: auto; }
    .article-card { padding: 20px; }
}

/* roulang page: category2 */
:root {
      --bg-deep: #0A1128;
      --bg-panel: #0B1D3A;
      --bg-footer: #060D1F;
      --primary: #2F6BFF;
      --primary-hover: #1D5CFF;
      --primary-active: #1A4FD6;
      --cyan: #38BDF8;
      --gold: #C9A961;
      --gold-light: #D9B96F;
      --text-main: #E6EDF7;
      --text-sub: #A0B0C8;
      --text-muted: #6B7E9B;
      --border-soft: rgba(255,255,255,0.12);
      --card-bg: rgba(255,255,255,0.06);
    }

    * { 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", sans-serif;
      background: var(--bg-deep);
      color: var(--text-main);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }

    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; transition: color 0.3s ease, border-color 0.3s ease, background 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease; }
    button { font-family: inherit; cursor: pointer; background: none; border: none; }
    input { font-family: inherit; outline: none; }

    .container { max-width: 1280px; margin: 0 auto; padding-left: 16px; padding-right: 16px; }
    @media (min-width: 640px) { .container { padding-left: 24px; padding-right: 24px; } }
    @media (min-width: 1024px) { .container { padding-left: 32px; padding-right: 32px; } }

    /* 玻璃卡片 */
    .glass {
      background: var(--card-bg);
      border: 1px solid var(--border-soft);
      border-radius: 16px;
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      box-shadow: 0 8px 32px rgba(0,0,0,0.25);
      transition: all 0.3s ease;
    }
    .glass:hover {
      background: rgba(255,255,255,0.1);
      border-color: rgba(255,255,255,0.2);
      transform: translateY(-4px);
      box-shadow: 0 16px 40px rgba(0,0,0,0.3);
    }

    /* 按钮 */
    .glow-btn {
      background: linear-gradient(135deg, #2F6BFF, #1D5CFF);
      border-radius: 10px;
      color: #fff;
      font-weight: 600;
      box-shadow: 0 0 20px rgba(47,107,255,0.35);
      transition: all 0.3s ease;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 22px;
    }
    .glow-btn:hover { box-shadow: 0 0 32px rgba(47,107,255,0.55); transform: translateY(-2px); }
    .glow-btn:active { transform: scale(0.98); }
    .glow-btn:focus-visible { outline: 3px solid rgba(47,107,255,0.6); outline-offset: 2px; }

    .gold-btn {
      background: linear-gradient(135deg, #D9B96F, #C9A961);
      color: #060D1F;
      font-weight: 700;
      border-radius: 10px;
      box-shadow: 0 0 24px rgba(201,169,97,0.35);
      transition: all 0.3s ease;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 22px;
    }
    .gold-btn:hover { box-shadow: 0 0 36px rgba(201,169,97,0.55); transform: translateY(-2px); }
    .gold-btn:active { transform: scale(0.98); }
    .gold-btn:focus-visible { outline: 3px solid rgba(201,169,97,0.5); outline-offset: 2px; }

    .outline-btn {
      border: 1px solid rgba(255,255,255,0.25);
      border-radius: 10px;
      color: var(--text-main);
      backdrop-filter: blur(8px);
      transition: all 0.3s ease;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 22px;
      background: rgba(255,255,255,0.03);
    }
    .outline-btn:hover { border-color: rgba(255,255,255,0.5); background: rgba(255,255,255,0.08); }
    .outline-btn:active { transform: scale(0.98); }
    .outline-btn:focus-visible { outline: 3px solid rgba(255,255,255,0.3); outline-offset: 2px; }

    /* Header */
    .site-header {
      background: rgba(10,17,40,0.85);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .header-top { transition: height 0.3s ease; }
    .site-header.scrolled .header-top .header-top-inner { height: 36px !important; }
    .site-header.scrolled .header-hot { display: none; }

    .header-nav .nav-link {
      position: relative;
      color: var(--text-sub);
      font-size: 0.875rem;
      padding: 0 1.1rem;
      height: 56px;
      display: inline-flex;
      align-items: center;
      white-space: nowrap;
      transition: color 0.3s;
    }
    .header-nav .nav-link:hover { color: var(--text-main); }
    .header-nav .nav-link.active { color: var(--gold); }
    .header-nav .nav-link.active::after {
      content: '';
      position: absolute;
      left: 1rem;
      right: 1rem;
      bottom: 0;
      height: 2px;
      background: var(--gold);
      border-radius: 2px;
    }
    .header-nav .nav-link:focus-visible { outline: 2px solid rgba(47,107,255,0.6); outline-offset: -2px; }

    /* 搜索 */
    .search-wrap input {
      background: rgba(255,255,255,0.06);
      border: 1px solid rgba(255,255,255,0.12);
      border-radius: 8px;
      color: var(--text-main);
      padding: 6px 14px;
      font-size: 0.875rem;
      transition: all 0.3s;
    }
    .search-wrap input::placeholder { color: var(--text-muted); }
    .search-wrap input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(47,107,255,0.2); }
    .search-wrap input:disabled { opacity: 0.5; cursor: not-allowed; }

    /* 热词 */
    .hot-tag {
      font-size: 0.75rem;
      color: var(--text-muted);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: 999px;
      padding: 1px 10px;
      transition: all 0.3s;
    }
    .hot-tag:hover { color: var(--gold); border-color: rgba(201,169,97,0.5); }

    /* 移动端抽屉 */
    .mobile-drawer { position: fixed; inset: 0; z-index: 60; pointer-events: none; }
    .mobile-drawer .drawer-backdrop {
      position: absolute; inset: 0; background: rgba(0,0,0,0.6);
      opacity: 0; transition: opacity 0.3s;
    }
    .mobile-drawer .drawer-panel {
      position: absolute; right: 0; top: 0; bottom: 0; width: 280px; max-width: 80vw;
      background: #0B1D3A; border-left: 1px solid rgba(255,255,255,0.1);
      transform: translateX(100%); transition: transform 0.3s ease;
      display: flex; flex-direction: column;
    }
    .mobile-drawer.open { pointer-events: auto; }
    .mobile-drawer.open .drawer-backdrop { opacity: 1; }
    .mobile-drawer.open .drawer-panel { transform: translateX(0); }
    .drawer-link {
      padding: 10px 12px;
      border-radius: 8px;
      color: var(--text-sub);
      font-size: 0.875rem;
      transition: all 0.3s;
    }
    .drawer-link:hover { background: rgba(255,255,255,0.06); color: var(--text-main); }
    .drawer-link.active { color: var(--gold); background: rgba(201,169,97,0.1); }
    .drawer-link:focus-visible { outline: 2px solid rgba(47,107,255,0.6); }

    /* 页面区块 */
    .section-block { padding: clamp(4rem, 8vw, 7rem) 0; }
    .section-title { font-size: clamp(1.75rem, 3vw, 2.25rem); font-weight: 700; line-height: 1.3; color: #fff; }
    .section-sub { color: var(--text-sub); font-size: 1rem; max-width: 640px; }

    /* 图片卡 */
    .img-card-wrap { overflow: hidden; border-radius: 12px; position: relative; }
    .img-card-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
    .img-card-wrap:hover img { transform: scale(1.05); }
    .img-card-fallback {
      background: linear-gradient(135deg, rgba(47,107,255,0.2), rgba(11,29,58,0.6));
      display: flex; align-items: center; justify-content: center;
      color: var(--text-muted); font-size: 0.875rem;
    }

    /* 标签/badge */
    .tag {
      display: inline-flex; align-items: center;
      font-size: 0.75rem; letter-spacing: 0.05em;
      padding: 2px 10px; border-radius: 999px;
      border: 1px solid rgba(255,255,255,0.15);
      color: var(--text-sub);
      background: rgba(255,255,255,0.04);
    }
    .badge-gold {
      display: inline-flex; align-items: center; gap: 4px;
      font-size: 0.75rem; font-weight: 600;
      color: var(--gold);
      border: 1px solid rgba(201,169,97,0.4);
      border-radius: 999px; padding: 2px 10px;
      background: rgba(201,169,97,0.08);
    }
    .badge-cyan {
      display: inline-flex; align-items: center; gap: 4px;
      font-size: 0.75rem; color: var(--cyan);
      border: 1px solid rgba(56,189,248,0.3);
      border-radius: 999px; padding: 2px 10px;
      background: rgba(56,189,248,0.06);
    }
    .badge-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); display: inline-block; }

    /* 面包屑 */
    .breadcrumb a:hover { color: var(--gold); }
    .breadcrumb a:focus-visible { outline: 2px solid rgba(47,107,255,0.6); border-radius: 4px; }

    /* 时间线 */
    .timeline-list { position: relative; padding-left: 32px; }
    .timeline-list::before {
      content: ''; position: absolute; left: 8px; top: 8px; bottom: 8px;
      width: 1px; background: linear-gradient(180deg, var(--gold), rgba(47,107,255,0.3));
    }
    .timeline-item { position: relative; padding-bottom: 2rem; }
    .timeline-item::before {
      content: ''; position: absolute; left: -28px; top: 8px;
      width: 9px; height: 9px; border-radius: 50%;
      background: var(--gold); box-shadow: 0 0 10px rgba(201,169,97,0.5);
    }
    .timeline-year { color: var(--gold); font-size: 0.875rem; font-weight: 600; }

    /* FAQ */
    .faq-item {
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: 12px;
      background: rgba(255,255,255,0.04);
      position: relative;
      transition: border-color 0.3s, background 0.3s;
      overflow: hidden;
    }
    .faq-item.active { border-color: var(--gold); background: rgba(201,169,97,0.04); }
    .faq-item.active::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--gold); }
    .faq-question {
      display: flex; justify-content: space-between; align-items: center;
      width: 100%; padding: 18px 20px; text-align: left;
      color: var(--text-main); font-size: 0.9375rem; font-weight: 500;
      letter-spacing: 0.02em; gap: 16px;
    }
    .faq-question:focus-visible { outline: 2px solid rgba(47,107,255,0.6); outline-offset: -2px; border-radius: 12px; }
    .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
    .faq-answer-inner { padding: 0 20px 18px; color: var(--text-sub); font-size: 0.875rem; line-height: 1.8; }
    .faq-icon { flex-shrink: 0; width: 20px; height: 20px; display: flex; align-items: center; justify-content: center; border: 1px solid rgba(255,255,255,0.2); border-radius: 50%; font-size: 12px; transition: transform 0.3s, border-color 0.3s, color 0.3s; color: var(--text-sub); }
    .faq-item.active .faq-icon { transform: rotate(45deg); border-color: var(--gold); color: var(--gold); }

    /* CTA 横条 */
    .cta-strip {
      border: 1px solid rgba(201,169,97,0.3);
      background: linear-gradient(90deg, rgba(201,169,97,0.08), rgba(47,107,255,0.04));
      border-radius: 16px;
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
    }

    /* Footer */
    .site-footer { background: var(--bg-footer); border-top: 1px solid var(--gold); }
    .footer-grid { display: grid; grid-template-columns: 1fr; gap: 2rem; padding: 3rem 0 2.5rem; }
    @media (min-width: 640px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
    @media (min-width: 1024px) { .footer-grid { grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 3rem; } }
    .footer-col { display: flex; flex-direction: column; gap: 0.625rem; }
    .footer-col h4 {
      color: #fff; font-size: 0.875rem; font-weight: 600;
      letter-spacing: 0.05em; margin-bottom: 0.25rem;
    }
    .footer-col a { color: var(--text-muted); font-size: 0.875rem; transition: color 0.3s; }
    .footer-col a:hover { color: var(--gold); }
    .footer-col a:focus-visible { outline: 2px solid rgba(47,107,255,0.6); border-radius: 4px; }
    .footer-col p { color: var(--text-muted); font-size: 0.8125rem; line-height: 1.6; }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.08);
      padding: 1.25rem 0;
      text-align: center;
      color: var(--text-muted);
      font-size: 0.75rem;
    }

    /* 区块编号 */
    .block-num {
      font-size: 0.75rem; font-weight: 700; letter-spacing: 0.1em;
      color: var(--gold); display: inline-flex; align-items: center; gap: 8px;
    }
    .block-num::before { content: ''; width: 24px; height: 1px; background: var(--gold); display: inline-block; }

    /* hover 列表项 */
    .list-item-link { border-left: 3px solid transparent; transition: border-color 0.3s, background 0.3s; }
    .list-item-link:hover { border-left-color: var(--primary); background: rgba(255,255,255,0.04); }

    /* 卡片链接状态 */
    .card-link { display: inline-flex; align-items: center; gap: 4px; color: var(--cyan); font-size: 0.875rem; }
    .card-link:hover { color: var(--gold); }
    .card-link:focus-visible { outline: 2px solid rgba(47,107,255,0.6); border-radius: 4px; }

    /* 通用 focus 可见性 */
    a:focus-visible, button:focus-visible { outline: 2px solid rgba(47,107,255,0.6); outline-offset: 2px; }

    /* 移动端滚动条隐藏 */
    .overflow-x-auto::-webkit-scrollbar { display: none; }
    .overflow-x-auto { scrollbar-width: none; }

/* roulang page: category3 */
:root {
            --color-brand: #2F6BFF;
            --color-brand-hover: #1D5CFF;
            --color-brand-active: #1A4FD6;
            --color-cyan: #38BDF8;
            --color-gold: #C9A961;
            --color-gold-light: #D9B96F;
            --color-ink: #E6EDF7;
            --color-muted: #A0B0C8;
            --color-faint: #6B7E9B;
            --color-night: #0A1128;
            --color-deep: #0B1D3A;
            --color-dark: #060D1F;
            --radius-card: 16px;
            --radius-btn: 10px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.25);
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: #0A1128;
            color: #E6EDF7;
            line-height: 1.7;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s ease;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }

        input,
        textarea {
            font-family: inherit;
        }

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }

        @media (min-width: 640px) {
            .container {
                padding-left: 24px;
                padding-right: 24px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(10, 17, 40, 0.84);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .header-top {
            height: 42px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            overflow: hidden;
            transition: height .3s ease;
        }

        .site-header.scrolled .header-top {
            height: 36px;
        }

        .site-header.scrolled .header-hot {
            opacity: 0;
            pointer-events: none;
        }

        .header-search input {
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            color: #E6EDF7;
            outline: none;
            width: 220px;
            transition: all .3s ease;
        }

        .header-search input::placeholder {
            color: #6B7E9B;
        }

        .header-search input:focus {
            border-color: rgba(47, 107, 255, 0.7);
            box-shadow: 0 0 0 3px rgba(47, 107, 255, 0.2);
            background: rgba(255, 255, 255, 0.1);
        }

        .header-nav {
            height: 56px;
            display: flex;
            align-items: center;
        }

        .header-nav::-webkit-scrollbar {
            display: none;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 0 20px;
            height: 100%;
            font-size: 15px;
            font-weight: 500;
            color: #A0B0C8;
            border-bottom: 2px solid transparent;
            transition: color .25s ease, border-color .25s ease, background .25s ease;
            white-space: nowrap;
            position: relative;
        }

        .nav-link:hover {
            color: #E6EDF7;
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-link.active {
            color: #FFFFFF;
            border-bottom-color: #C9A961;
            background: rgba(47, 107, 255, 0.14);
        }

        .nav-link:focus-visible {
            outline: 2px solid #38BDF8;
            outline-offset: -2px;
        }

        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -300px;
            width: 280px;
            height: 100vh;
            background: #0B1D3A;
            border-left: 1px solid rgba(255, 255, 255, 0.1);
            z-index: 100;
            transition: right .35s ease;
            padding: 24px 20px;
            overflow-y: auto;
        }

        .mobile-drawer.open {
            right: 0;
        }

        .mobile-drawer a {
            display: block;
            padding: 12px 14px;
            border-radius: 8px;
            font-size: 15px;
            color: #A0B0C8;
            border-left: 2px solid transparent;
            transition: all .25s ease;
        }

        .mobile-drawer a:hover {
            color: #FFFFFF;
            background: rgba(255, 255, 255, 0.05);
        }

        .mobile-drawer a.active {
            color: #FFFFFF;
            border-left-color: #C9A961;
            background: rgba(47, 107, 255, 0.14);
        }

        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(6, 13, 31, 0.7);
            backdrop-filter: blur(4px);
            z-index: 99;
            opacity: 0;
            pointer-events: none;
            transition: opacity .3s ease;
        }

        .drawer-overlay.open {
            opacity: 1;
            pointer-events: auto;
        }

        .header-burger {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            color: #E6EDF7;
            background: rgba(255, 255, 255, 0.06);
            transition: all .25s ease;
        }

        .header-burger:hover {
            background: rgba(255, 255, 255, 0.12);
        }

        .header-burger:focus-visible {
            outline: 2px solid #38BDF8;
        }

        /* ===== Hero Mesh ===== */
        .hero-mesh {
            background-image: linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
            background-size: 36px 36px;
        }

        /* ===== Glass Card ===== */
        .glass {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: 16px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
            transition: all .3s ease;
        }

        .glass:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-4px);
            box-shadow: 0 14px 40px rgba(0, 0, 0, 0.3);
        }

        .glass-strong {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(20px);
            border-radius: 16px;
        }

        /* ===== Buttons ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #2F6BFF, #1D5CFF);
            color: #FFFFFF;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 10px;
            box-shadow: 0 0 24px rgba(47, 107, 255, 0.35);
            transition: all .3s ease;
            border: none;
        }

        .btn-primary:hover {
            box-shadow: 0 0 36px rgba(47, 107, 255, 0.7);
            transform: translateY(-2px);
            background: linear-gradient(135deg, #3D78FF, #1D5CFF);
        }

        .btn-primary:active {
            transform: scale(0.98);
            background: #1A4FD6;
        }

        .btn-primary:focus-visible,
        .btn-ghost:focus-visible,
        .btn-gold:focus-visible {
            outline: 2px solid #38BDF8;
            outline-offset: 3px;
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #E6EDF7;
            font-weight: 500;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 10px;
            backdrop-filter: blur(12px);
            transition: all .3s ease;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.35);
            transform: translateY(-1px);
        }

        .btn-ghost:active {
            transform: scale(0.98);
        }

        .btn-gold {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #D9B96F, #B8944F);
            color: #0A1128;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 32px;
            border-radius: 10px;
            box-shadow: 0 0 24px rgba(201, 169, 97, 0.35);
            transition: all .3s ease;
        }

        .btn-gold:hover {
            box-shadow: 0 0 36px rgba(201, 169, 97, 0.6);
            transform: translateY(-2px);
        }

        .btn-gold:active {
            transform: scale(0.98);
        }

        /* ===== Timeline ===== */
        .timeline {
            position: relative;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 16px;
            bottom: 16px;
            width: 1px;
            background: linear-gradient(to bottom, rgba(201, 169, 97, 0.6), rgba(47, 107, 255, 0.3));
        }

        .timeline-row {
            display: flex;
            gap: 20px;
            margin-bottom: 24px;
            position: relative;
        }

        .timeline-row:last-child {
            margin-bottom: 0;
        }

        .timeline-dot {
            width: 17px;
            height: 17px;
            border-radius: 9999px;
            background: #0A1128;
            border: 2px solid #C9A961;
            box-shadow: 0 0 12px rgba(201, 169, 97, 0.4);
            flex-shrink: 0;
            margin-top: 6px;
            position: relative;
            z-index: 1;
        }

        .timeline-content {
            flex: 1;
            padding: 20px 24px;
        }

        /* ===== FAQ ===== */
        .faq-item {
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.04);
            overflow: hidden;
            transition: border-color .3s ease, background .3s ease;
        }

        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.2);
        }

        .faq-item.open {
            border-color: rgba(201, 169, 97, 0.5);
            background: rgba(255, 255, 255, 0.06);
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        .faq-answer {
            display: none;
            padding: 0 20px 18px;
            color: #A0B0C8;
            font-size: 14px;
            line-height: 1.75;
            border-left: 2px solid #C9A961;
            margin-left: 20px;
            margin-right: 20px;
            margin-bottom: 12px;
            padding-left: 14px;
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 20px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: #E6EDF7;
            transition: color .25s ease;
            width: 100%;
            text-align: left;
        }

        .faq-question:hover {
            color: #FFFFFF;
        }

        .faq-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #C9A961;
            font-size: 16px;
            font-weight: 400;
            transition: transform .3s ease, background .3s ease;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(201, 169, 97, 0.15);
            border-color: #C9A961;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #060D1F;
            border-top: 1px solid rgba(201, 169, 97, 0.35);
            padding-top: 56px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            padding-bottom: 40px;
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1.2fr;
                gap: 24px;
            }
        }

        .footer-col h4 {
            color: #E6EDF7;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            color: #6B7E9B;
            font-size: 14px;
            padding: 3px 0;
            transition: color .25s ease;
        }

        .footer-col a:hover {
            color: #C9A961;
        }

        .footer-col p {
            color: #6B7E9B;
            font-size: 14px;
            padding: 3px 0;
            margin: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 18px 0;
        }

        .footer-bottom p {
            color: #6B7E9B;
            font-size: 13px;
            text-align: center;
            margin: 0;
        }

        /* ===== CTA Bar ===== */
        .cta-bar {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(201, 169, 97, 0.25);
            border-radius: 14px;
            backdrop-filter: blur(14px);
            padding: 20px 24px;
            transition: border-color .3s ease, box-shadow .3s ease;
        }

        .cta-bar:hover {
            border-color: rgba(201, 169, 97, 0.45);
            box-shadow: 0 0 30px rgba(201, 169, 97, 0.1);
        }

        /* ===== Section ===== */
        .section {
            padding: clamp(4rem, 8vw, 7rem) 0;
        }

        .section-deep {
            background: rgba(11, 29, 58, 0.35);
        }

        /* ===== Number item ===== */
        .rhythm-item {
            position: relative;
            padding-top: 24px;
            border-top: 1px solid rgba(201, 169, 97, 0.25);
        }

        .rhythm-item .num {
            font-size: 14px;
            font-weight: 700;
            color: #C9A961;
            letter-spacing: 0.05em;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            font-size: 13px;
            color: #6B7E9B;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
        }

        .breadcrumb a {
            color: #6B7E9B;
            transition: color .25s ease;
        }

        .breadcrumb a:hover {
            color: #38BDF8;
        }

        .breadcrumb .separator {
            color: rgba(255, 255, 255, 0.25);
        }

        .breadcrumb .current {
            color: #A0B0C8;
        }

/* roulang page: category4 */
:root {
            --bg: #0A1128;
            --alt-bg: #0B1D3A;
            --footer-bg: #060D1F;
            --brand: #2F6BFF;
            --brand-hover: #1D5CFF;
            --brand-active: #1A4FD6;
            --cyan: #38BDF8;
            --teal: #38E1D0;
            --gold: #C9A961;
            --gold-bright: #D9B96F;
            --text-primary: #E6EDF7;
            --text-secondary: #A0B0C8;
            --text-muted: #6B7E9B;
            --radius: 16px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
        }

        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg);
            color: var(--text-primary);
            font-size: 16px;
            line-height: 1.7;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        input,
        button {
            outline: none;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 16px;
        }

        .glass {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 16px;
            backdrop-filter: blur(16px);
            box-shadow: var(--shadow);
            transition: all 0.3s ease;
        }
        .glass:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-4px);
        }
        .glass-strong {
            background: rgba(13, 25, 58, 0.85);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 16px;
            backdrop-filter: blur(20px);
            box-shadow: var(--shadow);
        }

        .glow-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #2F6BFF 0%, #1D5CFF 100%);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 12px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            box-shadow: 0 0 24px rgba(47, 107, 255, 0.4);
            transition: all 0.3s ease;
        }
        .glow-btn:hover {
            box-shadow: 0 0 40px rgba(47, 107, 255, 0.65);
            transform: translateY(-2px);
            color: #fff;
        }
        .glow-btn:active {
            transform: scale(0.98);
        }
        .glow-btn:focus-visible {
            outline: 3px solid rgba(56, 141, 248, 0.7);
            outline-offset: 2px;
        }

        .gold-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #D9B96F 0%, #C9A961 55%, #A8863F 100%);
            color: #0A1128;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 12px;
            padding: 14px 36px;
            font-size: 16px;
            font-weight: 700;
            box-shadow: 0 0 28px rgba(201, 169, 97, 0.35);
            transition: all 0.3s ease;
        }
        .gold-cta:hover {
            box-shadow: 0 0 44px rgba(201, 169, 97, 0.55);
            transform: translateY(-2px);
            color: #060D1F;
        }
        .gold-cta:active {
            transform: scale(0.98);
        }
        .gold-cta:focus-visible {
            outline: 3px solid rgba(201, 169, 97, 0.7);
            outline-offset: 2px;
        }

        .hero-grid-bg {
            background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 38px 38px;
        }
        .page-banner {
            background-image:
                radial-gradient(ellipse at 20% 20%, rgba(47, 107, 255, 0.25) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 10%, rgba(56, 189, 248, 0.12) 0%, transparent 40%),
                linear-gradient(rgba(10, 17, 40, 0.88), rgba(10, 17, 40, 0.94)),
                url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(10, 17, 40, 0.78);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .header-top {
            height: 42px;
            transition: height 0.3s ease;
            overflow: hidden;
        }
        .header-nav {
            height: 56px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .header-nav .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 0 20px;
            font-size: 14px;
            color: var(--text-secondary);
            white-space: nowrap;
            height: 100%;
            transition: color 0.2s ease;
        }
        .header-nav .nav-link:hover {
            color: #fff;
        }
        .header-nav .nav-link.active {
            color: #fff;
            font-weight: 600;
        }
        .header-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 3px;
            background: var(--brand);
            border-radius: 3px 3px 0 0;
        }
        body.scrolled .header-top {
            height: 36px;
        }
        body.scrolled .hot-keywords {
            display: none;
        }

        .header-icon-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-secondary);
            transition: all 0.25s ease;
        }
        .header-icon-btn:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.2);
        }
        .header-icon-btn:focus-visible {
            outline: 2px solid rgba(47, 107, 255, 0.6);
            outline-offset: 2px;
        }

        .hot-tag {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 999px;
            font-size: 12px;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all 0.25s ease;
        }
        .hot-tag:hover {
            color: var(--gold-bright);
            border-color: rgba(201, 169, 97, 0.35);
            background: rgba(201, 169, 97, 0.08);
        }

        .search-panel {
            background: rgba(10, 17, 40, 0.96);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .search-box-wrap {
            display: flex;
            gap: 10px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 12px;
            padding: 6px 6px 6px 16px;
            transition: border-color 0.3s, box-shadow 0.3s;
        }
        .search-box-wrap:focus-within {
            border-color: rgba(47, 107, 255, 0.6);
            box-shadow: 0 0 0 3px rgba(47, 107, 255, 0.2);
        }
        .search-input {
            flex: 1;
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 14px;
            min-width: 0;
        }
        .search-input::placeholder {
            color: var(--text-muted);
        }
        .search-submit {
            background: var(--brand);
            border: none;
            border-radius: 8px;
            color: #fff;
            font-size: 13px;
            padding: 8px 20px;
            font-weight: 600;
            transition: background 0.2s, transform 0.2s;
            flex-shrink: 0;
        }
        .search-submit:hover {
            background: var(--brand-hover);
        }
        .search-submit:active {
            transform: scale(0.97);
        }

        .mobile-drawer {
            position: fixed;
            inset: 0;
            z-index: 60;
            visibility: hidden;
            pointer-events: none;
        }
        .mobile-drawer.open {
            visibility: visible;
            pointer-events: auto;
        }
        .drawer-overlay {
            position: absolute;
            inset: 0;
            background: rgba(4, 8, 20, 0.65);
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .mobile-drawer.open .drawer-overlay {
            opacity: 1;
        }
        .drawer-panel {
            position: absolute;
            right: 0;
            top: 0;
            bottom: 0;
            width: 320px;
            max-width: 85vw;
            background: var(--alt-bg);
            box-shadow: -12px 0 40px rgba(0, 0, 0, 0.4);
            transform: translateX(100%);
            transition: transform 0.35s ease;
            overflow-y: auto;
        }
        .mobile-drawer.open .drawer-panel {
            transform: translateX(0);
        }
        .drawer-links {
            padding: 12px 16px;
        }
        .drawer-link {
            display: block;
            padding: 13px 14px;
            border-radius: 10px;
            font-size: 15px;
            color: var(--text-secondary);
            transition: all 0.2s ease;
        }
        .drawer-link:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
        }
        .drawer-link.active {
            background: rgba(47, 107, 255, 0.12);
            color: #fff;
            border-left: 3px solid var(--brand);
            padding-left: 11px;
            font-weight: 600;
        }

        .breadcrumb {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
        }
        .breadcrumb a {
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--text-primary);
        }
        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.2);
        }

        .level-list-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 18px 16px;
            border-radius: 12px;
            transition: background 0.25s ease;
        }
        .level-list-item:hover {
            background: rgba(255, 255, 255, 0.05);
        }
        .level-divider {
            height: 1px;
            background: rgba(255, 255, 255, 0.08);
            margin: 0 16px;
        }
        .level-index {
            width: 40px;
            height: 40px;
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(47, 107, 255, 0.12);
            border: 1px solid rgba(47, 107, 255, 0.35);
            border-radius: 50%;
            color: var(--gold-bright);
            font-size: 15px;
            font-weight: 700;
        }
        .level-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 500;
            padding: 2px 10px;
            border-radius: 999px;
            white-space: nowrap;
        }
        .level-tag-base {
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .level-tag-up {
            color: var(--cyan);
            background: rgba(56, 189, 248, 0.08);
            border: 1px solid rgba(56, 189, 248, 0.2);
        }
        .level-tag-pro {
            color: var(--gold-bright);
            background: rgba(201, 169, 97, 0.08);
            border: 1px solid rgba(201, 169, 97, 0.25);
        }

        .mini-card-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(47, 107, 255, 0.1);
            border: 1px solid rgba(47, 107, 255, 0.25);
            color: var(--gold-bright);
            margin-bottom: 14px;
        }

        .compare-table {
            width: 100%;
            min-width: 760px;
            border-collapse: collapse;
        }
        .compare-table th {
            padding: 14px 16px;
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
            text-align: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            background: rgba(255, 255, 255, 0.04);
        }
        .compare-table th:first-child {
            text-align: left;
        }
        .compare-table td {
            padding: 13px 16px;
            font-size: 14px;
            color: var(--text-primary);
            text-align: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .compare-table td:first-child {
            text-align: left;
            color: var(--text-secondary);
        }
        .compare-table tr:last-child td {
            border-bottom: none;
        }
        .compare-table tbody tr:hover td {
            background: rgba(255, 255, 255, 0.03);
        }
        .gold-rec {
            border: 1px solid rgba(201, 169, 97, 0.4);
            background: rgba(201, 169, 97, 0.08) !important;
            color: var(--gold-bright) !important;
        }
        .gold-rec-tag {
            display: inline-block;
            background: rgba(201, 169, 97, 0.15);
            color: var(--gold-bright);
            font-size: 10px;
            font-weight: 600;
            border-radius: 4px;
            padding: 2px 7px;
            margin-left: 6px;
            border: 1px solid rgba(201, 169, 97, 0.35);
            vertical-align: middle;
        }

        .faq-item {
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 14px;
            background: rgba(255, 255, 255, 0.04);
            transition: border-color 0.3s, background 0.3s;
            overflow: hidden;
        }
        .faq-item.open {
            border-color: rgba(47, 107, 255, 0.45);
            background: rgba(255, 255, 255, 0.06);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 18px 20px;
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 15px;
            font-weight: 600;
            text-align: left;
            cursor: pointer;
            transition: color 0.2s;
        }
        .faq-question:hover {
            color: var(--gold-bright);
        }
        .faq-question:focus-visible {
            outline: 2px solid rgba(47, 107, 255, 0.5);
            outline-offset: -2px;
            border-radius: 10px;
        }
        .faq-arrow {
            width: 18px;
            height: 18px;
            flex-shrink: 0;
            transition: transform 0.3s ease;
            color: var(--text-muted);
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: var(--gold);
        }
        .faq-answer {
            max-height: 0;
            opacity: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, opacity 0.3s ease, padding 0.3s ease;
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            opacity: 1;
            padding: 0 20px 18px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            border-left: 2px solid rgba(47, 107, 255, 0.4);
            padding-left: 12px;
        }

        .site-footer {
            background-color: #060D1F;
            border-top: 1px solid rgba(201, 169, 97, 0.25);
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            padding-top: 48px;
            padding-bottom: 36px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }
        .footer-col a,
        .footer-col p {
            display: block;
            font-size: 13px;
            color: var(--text-muted);
            line-height: 2.1;
            transition: color 0.2s;
        }
        .footer-col a:hover {
            color: var(--gold-bright);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            padding: 18px 0;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
            text-align: center;
            margin: 0;
        }

        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1.4fr 0.8fr 0.9fr 1.1fr;
                gap: 48px;
            }
        }