/* roulang page: index */
:root {
    --primary: #0F3D36;
    --primary-dark: #072D26;
    --accent: #D6A55C;
    --accent-strong: #E8C47D;
    --bg: #F7F5F1;
    --dark-bg: #0B2C28;
    --text-main: #232824;
    --text-sub: #5C6B63;
    --border: #D8D2C8;
    --success: #2E7D4F;
    --error: #B34747;
    --radius: 8px;
    --radius-btn: 4px;
    --shadow: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-hover: 0 8px 20px rgba(0,0,0,0.10);
    --container: 1200px;
    --space-section: 80px;
    --space-section-mobile: 40px;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.75;
    color: var(--text-main);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
  }

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

  a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
  }

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

  ul, ol {
    padding-left: 1.2em;
  }

  .container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
  }

  .section-title {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.35;
    color: var(--text-main);
    margin-bottom: 8px;
  }

  .section-subtitle {
    font-size: 16px;
    color: var(--text-sub);
    margin-bottom: 24px;
  }

  .section-divider {
    width: 48px;
    height: 3px;
    background: var(--accent);
    margin-bottom: 32px;
  }

  /* ============ TOP BAR ============ */
  .topbar {
    background: var(--primary);
    height: 36px;
    display: flex;
    align-items: center;
  }

  .topbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .topbar-domain {
    font-size: 13px;
    color: rgba(255,255,255,0.82);
    letter-spacing: 0.3px;
  }
  .topbar-domain a {
    color: rgba(255,255,255,0.82);
  }
  .topbar-domain a:hover {
    color: #fff;
  }

  .topbar-actions {
    font-size: 13px;
  }
  .topbar-actions a {
    color: var(--accent-strong);
    margin-left: 16px;
  }
  .topbar-actions a:hover {
    color: #fff;
  }
  .topbar-actions span {
    color: rgba(255,255,255,0.4);
    margin-left: 16px;
  }

  /* ============ NAV ============ */
  .main-nav {
    background: #fff;
    height: 72px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    position: sticky;
    top: 0;
    z-index: 100;
  }

  .main-nav .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
  }

  .brand-logo {
    display: flex;
    align-items: baseline;
    gap: 2px;
  }
  .brand-main {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 0.5px;
  }
  .brand-sub {
    font-size: 13px;
    font-weight: 500;
    color: var(--accent);
    margin-left: 4px;
    border: 1px solid var(--accent);
    border-radius: 4px;
    padding: 0 4px;
  }
  .brand-dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    margin-left: 3px;
    margin-bottom: 4px;
  }

  .nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
  }
  .nav-links a {
    font-size: 16px;
    font-weight: 400;
    color: var(--text-main);
    padding: 8px 0;
    border-bottom: 2px solid transparent;
    transition: border-color 0.2s, color 0.2s;
  }
  .nav-links a:hover {
    color: var(--primary);
    border-bottom-color: var(--accent);
  }
  .nav-links a.active {
    color: var(--primary);
    font-weight: 600;
    border-bottom-color: var(--accent);
  }

  .nav-cta {
    display: flex;
    align-items: center;
    gap: 16px;
  }

  .btn {
    display: inline-block;
    font-size: 16px;
    font-weight: 600;
    padding: 10px 24px;
    border-radius: var(--radius-btn);
    border: 1px solid transparent;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, box-shadow 0.2s, transform 0.2s;
    text-align: center;
  }

  .btn-primary {
    background: var(--accent);
    color: var(--primary-dark);
    border-color: var(--accent);
  }
  .btn-primary:hover {
    background: var(--accent-strong);
    color: var(--primary-dark);
    box-shadow: 0 4px 12px rgba(214,165,92,0.35);
    transform: translateY(-1px);
  }

  .btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
  }
  .btn-outline:hover {
    background: var(--primary);
    color: #fff;
  }

  .btn-gold {
    background: var(--accent);
    color: var(--primary-dark);
    font-weight: 700;
    padding: 12px 32px;
  }
  .btn-gold:hover {
    background: var(--accent-strong);
    box-shadow: 0 6px 16px rgba(214,165,92,0.45);
    transform: translateY(-2px);
    color: var(--primary-dark);
  }

  .nav-cta .btn {
    padding: 8px 18px;
    font-size: 14px;
  }

  .hamburger {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--primary);
    cursor: pointer;
    line-height: 1;
  }

  .mobile-menu {
    display: none;
  }

  /* ============ HERO ============ */
  .hero {
    position: relative;
    min-height: 520px;
    display: flex;
    align-items: center;
    background:
      radial-gradient(ellipse at 20% 40%, rgba(15,61,54,0.95) 0%, rgba(7,45,38,0.98) 60%, #06201b 100%);
    overflow: hidden;
  }

  .hero::before {
    content: '';
    position: absolute;
    inset: 0;
    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: 48px 48px;
    pointer-events: none;
  }

  .hero-bg-img {
    position: absolute;
    right: -5%;
    top: 0;
    width: 60%;
    height: 100%;
    object-fit: cover;
    opacity: 0.18;
    pointer-events: none;
  }

  .hero .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
    padding-top: 60px;
    padding-bottom: 60px;
  }

  .hero-content {
    max-width: 560px;
  }

  .hero h1 {
    font-size: 44px;
    font-weight: 700;
    line-height: 1.3;
    color: #fff;
    margin-bottom: 16px;
  }

  .hero h1 .gold {
    color: var(--accent-strong);
  }

  .hero-sub {
    font-size: 17px;
    line-height: 1.7;
    color: rgba(255,255,255,0.85);
    margin-bottom: 30px;
  }

  .hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
  }

  .hero-metrics {
    display: flex;
    gap: 40px;
    margin-top: 48px;
  }

  .metric-item {
    text-align: left;
  }
  .metric-value {
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
  }
  .metric-label {
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    margin-top: 2px;
  }

  .hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .hero-visual img {
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.4);
  }

  /* ============ PLAN TABLE ============ */
  .plan-table-section {
    padding: var(--space-section) 0;
  }

  .plan-wrap {
    overflow-x: auto;
    background: #fff;
    border-radius: 12px;
    box-shadow: var(--shadow);
  }

  .plan-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 860px;
  }

  .plan-table th {
    background: var(--primary);
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    padding: 18px 20px;
    text-align: center;
    position: relative;
  }

  .plan-table th.recommend-plan {
    background: var(--primary-dark);
    border-left: 3px solid var(--accent);
    border-right: 3px solid var(--accent);
    position: relative;
  }

  .plan-table th.recommend-plan .badge-reco {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent);
    color: var(--primary-dark);
    font-size: 12px;
    font-weight: 700;
    padding: 2px 12px;
    border-radius: 20px;
    white-space: nowrap;
  }

  .plan-table td {
    padding: 14px 20px;
    text-align: center;
    border-bottom: 1px solid var(--border);
    font-size: 15px;
  }

  .plan-table td:first-child {
    text-align: left;
    font-weight: 500;
    color: var(--text-sub);
  }

  .plan-table tr:last-child td {
    border-bottom: none;
  }

  .plan-table td.recommend-plan {
    background: rgba(214,165,92,0.06);
    border-left: 3px solid var(--accent);
    border-right: 3px solid var(--accent);
  }

  .plan-icon {
    font-size: 18px;
    color: var(--success);
  }
  .plan-icon.no {
    color: var(--border);
  }

  .plan-price {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
  }
  .plan-price .unit {
    font-size: 13px;
    color: var(--text-sub);
    font-weight: 400;
  }

  /* ============ LEVELS ============ */
  .levels-section {
    padding: var(--space-section) 0;
    background: #fff;
  }

  .levels-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }

  .level-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 24px;
    transition: box-shadow 0.3s, border-color 0.3s, transform 0.3s;
    position: relative;
    overflow: hidden;
  }

  .level-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--border);
    transition: height 0.3s;
  }

  .level-card:hover {
    box-shadow: var(--shadow-hover);
    border-color: var(--accent);
    transform: translateY(-2px);
  }
  .level-card:hover::before {
    height: 6px;
  }

  .level-card.gold::before {
    background: var(--accent);
  }
  .level-card.dark::before {
    background: var(--primary);
  }
  .level-card.silver::before {
    background: #9aa5a0;
  }
  .level-card.basic::before {
    background: var(--border);
  }

  .level-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 16px;
  }
  .level-card.basic .level-icon { background: #7a8780; }
  .level-card.silver .level-icon { background: #8fa39c; }
  .level-card.gold .level-icon { background: var(--accent); color: var(--primary-dark); }
  .level-card.dark .level-icon { background: var(--primary-dark); }

  .level-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 12px;
  }

  .level-features {
    list-style: none;
    padding: 0;
    margin: 0 0 20px 0;
  }
  .level-features li {
    position: relative;
    padding-left: 20px;
    font-size: 14px;
    color: var(--text-sub);
    margin-bottom: 8px;
    line-height: 1.6;
  }
  .level-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 700;
  }

  .level-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }
  .level-link:hover {
    color: var(--accent);
  }

  /* ============ PREVIEW ============ */
  .preview-section {
    padding: var(--space-section) 0;
    background: var(--dark-bg);
  }

  .preview-section .section-title {
    color: #fff;
  }
  .preview-section .section-subtitle {
    color: rgba(255,255,255,0.65);
  }
  .preview-section .section-divider {
    background: var(--accent);
  }

  .preview-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }

  .preview-card {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
  }
  .preview-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: 0 12px 30px rgba(0,0,0,0.3);
  }

  .preview-cover {
    height: 160px;
    overflow: hidden;
    position: relative;
  }
  .preview-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s;
  }
  .preview-card:hover .preview-cover img {
    transform: scale(1.04);
  }
  .preview-lock {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(0,0,0,0.6);
    color: #fff;
    font-size: 12px;
    padding: 3px 10px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 5px;
  }
  .preview-lock i {
    font-size: 11px;
  }

  .preview-tag {
    position: absolute;
    top: 10px;
    left: 10px;
    background: var(--accent);
    color: var(--primary-dark);
    font-size: 12px;
    font-weight: 600;
    padding: 2px 10px;
    border-radius: 4px;
  }

  .preview-body {
    padding: 20px;
  }
  .preview-title {
    font-size: 17px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 8px;
    line-height: 1.45;
  }
  .preview-desc {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    line-height: 1.65;
  }
  .preview-status {
    margin-top: 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .preview-status .status-text {
    font-size: 12px;
    color: var(--accent-strong);
  }
  .preview-status .status-text.unlocked {
    color: var(--success);
  }

  /* ============ NEWS LIST ============ */
  .news-section {
    padding: var(--space-section) 0;
    background: var(--bg);
  }

  .news-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .news-card {
    display: flex;
    gap: 16px;
    background: #fff;
    border-radius: var(--radius);
    padding: 20px;
    border: 1px solid var(--border);
    transition: box-shadow 0.2s, border-color 0.2s, transform 0.2s;
  }
  .news-card:hover {
    box-shadow: var(--shadow-hover);
    border-color: var(--accent);
    transform: translateY(-2px);
  }

  .news-thumb {
    width: 100px;
    height: 80px;
    border-radius: 6px;
    overflow: hidden;
    flex-shrink: 0;
  }
  .news-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .news-info {
    flex: 1;
  }
  .news-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
    line-height: 1.45;
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .news-summary {
    font-size: 14px;
    color: var(--text-sub);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 8px;
  }
  .news-meta {
    display: flex;
    gap: 12px;
    align-items: center;
    font-size: 13px;
    color: var(--text-sub);
  }
  .news-meta .tag {
    background: rgba(15,61,54,0.08);
    color: var(--primary);
    font-size: 12px;
    padding: 1px 8px;
    border-radius: 4px;
  }

  .empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 50px 20px;
    font-size: 16px;
    color: var(--text-sub);
    background: #fff;
    border-radius: var(--radius);
    border: 1px dashed var(--border);
  }

  /* ============ FAQ ============ */
  .faq-section {
    padding: var(--space-section) 0;
    background: #fff;
  }

  .faq-list {
    max-width: 780px;
    margin: 0 auto;
  }

  .faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 14px;
    background: var(--bg);
    overflow: hidden;
    transition: border-color 0.2s;
  }
  .faq-item.open {
    border-color: var(--accent);
  }

  .faq-question {
    padding: 18px 22px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
    user-select: none;
  }
  .faq-question .faq-icon {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    transition: transform 0.2s, background 0.2s, border-color 0.2s;
    flex-shrink: 0;
  }
  .faq-item.open .faq-icon {
    transform: rotate(45deg);
    background: var(--accent);
    border-color: var(--accent);
    color: var(--primary-dark);
  }

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    padding: 0 22px;
    font-size: 15px;
    color: var(--text-sub);
    line-height: 1.7;
    border-top: 1px solid transparent;
    transition: max-height 0.2s ease, padding 0.2s ease, border-color 0.2s;
  }
  .faq-item.open .faq-answer {
    max-height: 300px;
    padding: 16px 22px;
    border-top-color: var(--accent);
  }

  /* ============ CTA ============ */
  .cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #0B2C28 0%, #1a3a2e 50%, #2d2016 100%);
    position: relative;
    overflow: hidden;
  }

  .cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 20% 80%, rgba(214,165,92,0.12) 0%, transparent 50%);
    pointer-events: none;
  }

  .cta-section .container {
    position: relative;
    z-index: 2;
    text-align: center;
  }

  .cta-title {
    font-size: 34px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
    line-height: 1.3;
  }

  .cta-sub {
    font-size: 17px;
    color: rgba(255,255,255,0.75);
    margin-bottom: 32px;
  }

  .cta-icons {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    margin-bottom: 36px;
    color: rgba(255,255,255,0.5);
    font-size: 14px;
  }
  .cta-icons span {
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .cta-icons i {
    color: var(--accent);
    font-size: 16px;
  }

  /* ============ FOOTER ============ */
  .site-footer {
    background: var(--dark-bg);
    padding-top: 56px;
  }

  .footer-cols {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }

  .footer-brand .footer-brand-name {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
  }
  .footer-brand p {
    font-size: 14px;
    color: rgba(255,255,255,0.55);
    line-height: 1.7;
    margin-bottom: 10px;
  }
  .footer-brand .domain-link {
    font-size: 13px;
    color: var(--accent);
  }

  .footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 18px;
  }

  .footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
  }

  .footer-col ul li {
    margin-bottom: 10px;
  }

  .footer-col ul a {
    font-size: 14px;
    color: rgba(255,255,255,0.55);
    line-height: 1.6;
  }
  .footer-col ul a:hover {
    color: var(--accent);
  }

  .footer-bottom {
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,0.35);
  }
  .footer-bottom a {
    color: rgba(255,255,255,0.45);
  }
  .footer-bottom a:hover {
    color: var(--accent);
  }

  /* ============ RESPONSIVE ============ */
  @media (max-width: 1199px) {
    .levels-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .preview-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .hero .container {
      grid-template-columns: 1fr;
      gap: 40px;
    }
    .hero-visual {
      display: none;
    }
  }

  @media (max-width: 991px) {
    .nav-links {
      display: none;
    }
    .hamburger {
      display: block;
    }

    .mobile-menu {
      display: none;
      position: absolute;
      top: 72px;
      left: 0;
      right: 0;
      background: #fff;
      box-shadow: 0 8px 20px rgba(0,0,0,0.12);
      padding: 16px 24px;
    }
    .mobile-menu.open {
      display: block;
    }
    .mobile-menu a {
      display: block;
      padding: 12px 0;
      font-size: 16px;
      color: var(--text-main);
      border-bottom: 1px solid #f0ece6;
      text-align: center;
    }
    .mobile-menu a:hover {
      color: var(--accent);
    }

    .news-grid {
      grid-template-columns: 1fr;
    }

    .footer-cols {
      grid-template-columns: 1fr 1fr;
    }
  }

  @media (max-width: 767px) {
    :root {
      --space-section: var(--space-section-mobile);
    }
    .section-title {
      font-size: 22px;
    }
    .section-divider {
      margin-bottom: 20px;
    }

    .hero h1 {
      font-size: 26px;
    }
    .hero-sub {
      font-size: 15px;
    }
    .hero-metrics {
      gap: 20px;
      flex-wrap: wrap;
      margin-top: 32px;
    }
    .metric-value {
      font-size: 22px;
    }

    .levels-grid {
      grid-template-columns: 1fr;
    }

    .preview-grid {
      grid-template-columns: 1fr;
    }

    .news-card {
      flex-direction: column;
    }
    .news-thumb {
      width: 100%;
      height: 140px;
    }

    .footer-cols {
      grid-template-columns: 1fr;
      gap: 30px;
    }

    .cta-title {
      font-size: 24px;
    }
    .cta-icons {
      gap: 20px;
    }

    .plan-table-section .container {
      padding-left: 12px;
      padding-right: 12px;
    }

    .faq-question {
      font-size: 15px;
      padding: 14px 16px;
    }
    .faq-answer {
      padding: 0 16px;
      font-size: 14px;
    }
    .faq-item.open .faq-answer {
      padding: 14px 16px;
    }

    .brand-main {
      font-size: 20px;
    }
    .brand-sub {
      font-size: 11px;
      padding: 0 3px;
    }

    .nav-cta .btn {
      padding: 6px 12px;
      font-size: 13px;
    }
  }

/* roulang page: category1 */
:root {
  --primary: #0F3D36;
  --primary-dark: #072D26;
  --accent: #D6A55C;
  --accent-light: #E8C47D;
  --bg: #F7F5F1;
  --dark: #0B2C28;
  --text: #232824;
  --text-muted: #5C6B63;
  --border: #D8D2C8;
  --success: #2E7D4F;
  --error: #B34747;
  --radius-card: 8px;
  --radius-btn: 4px;
  --radius-tag: 4px;
  --shadow-card: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-hover: 0 8px 20px rgba(0,0,0,0.10);
  --container: 1200px;
  --space: 80px;
  --space-mobile: 40px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif; background: var(--bg); color: var(--text); line-height: 1.75; font-size: 16px; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* 顶部信息条 */
.topbar { background: var(--primary); height: 36px; display: flex; align-items: center; }
.topbar .container { display: flex; justify-content: space-between; align-items: center; width: 100%; }
.topbar-domain { color: rgba(255,255,255,0.75); font-size: 13px; letter-spacing: 0.2px; transition: color .2s; }
.topbar-domain:hover { color: #fff; }
.topbar-actions { display: flex; gap: 18px; }
.topbar-actions a { color: var(--accent); font-size: 13px; transition: color .2s; }
.topbar-actions a:hover { color: var(--accent-light); }

/* 主导航 */
.main-nav { background: #fff; box-shadow: 0 2px 8px rgba(0,0,0,0.06); position: sticky; top: 0; z-index: 100; }
.main-nav .container { display: flex; align-items: center; justify-content: space-between; min-height: 72px; }
.brand-logo { display: flex; flex-direction: column; line-height: 1.2; }
.brand-main { font-size: 22px; font-weight: 700; color: var(--primary); letter-spacing: 0.3px; display: flex; align-items: center; gap: 4px; }
.brand-dot { display: inline-block; width: 7px; height: 7px; background: var(--accent); border-radius: 50%; margin-left: 2px; }
.brand-sub { font-size: 11px; color: var(--accent); letter-spacing: 3px; text-transform: uppercase; }
.nav-links { display: flex; gap: 36px; }
.nav-links a { font-size: 15px; color: var(--text); padding: 8px 2px; position: relative; transition: color .2s; font-weight: 500; }
.nav-links a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: var(--accent); transition: width .25s; }
.nav-links a:hover { color: var(--primary); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--primary); font-weight: 600; }
.nav-links a.active::after { width: 100%; }
.nav-cta { display: flex; align-items: center; gap: 14px; }
.btn { display: inline-block; padding: 10px 24px; font-size: 16px; font-weight: 600; border-radius: var(--radius-btn); transition: all .25s; text-align: center; }
.btn-primary { background: var(--accent); color: var(--primary-dark); border: 1px solid var(--accent); }
.btn-primary:hover { background: var(--accent-light); border-color: var(--accent-light); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(214,165,92,0.3); }
.btn-outline { border: 1px solid var(--primary); color: var(--primary); background: transparent; }
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-gold { background: var(--accent); color: var(--primary-dark); border: 1px solid var(--accent); padding: 14px 36px; font-size: 16px; }
.btn-gold:hover { background: var(--accent-light); border-color: var(--accent-light); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(214,165,92,0.35); }
.hamburger { display: none; background: none; border: none; font-size: 24px; color: var(--primary); padding: 4px 8px; }
.mobile-menu { display: none; flex-direction: column; background: #fff; border-top: 1px solid var(--border); padding: 16px 0; }
.mobile-menu a { padding: 12px 24px; font-size: 15px; color: var(--text); border-bottom: 1px solid rgba(216,210,200,0.4); }
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu a.active { color: var(--primary); font-weight: 600; background: rgba(15,61,54,0.04); }
.mobile-menu.show { display: flex; }

/* 面包屑 */
.breadcrumb { background: #fff; border-bottom: 1px solid var(--border); padding: 12px 0; }
.breadcrumb .container { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-muted); flex-wrap: wrap; }
.breadcrumb a { color: var(--primary); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { opacity: 0.5; }

/* 页面 Hero */
.page-hero { background: var(--dark) url('/assets/images/backpic/back-1.png') center/cover no-repeat; min-height: 280px; display: flex; align-items: center; position: relative; overflow: hidden; }
.page-hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(108deg, rgba(11,44,40,0.95) 20%, rgba(11,44,40,0.75) 55%, rgba(11,44,40,0.45) 100%); }
.page-hero .container { position: relative; z-index: 2; padding: 60px 24px; }
.page-hero h1 { color: #fff; font-size: 44px; font-weight: 700; line-height: 1.3; margin-bottom: 12px; letter-spacing: 0.5px; }
.page-hero p { color: rgba(255,255,255,0.85); font-size: 16px; max-width: 680px; }

/* 板块通用 */
.section { padding: var(--space) 0; }
.section-alt { background: #fff; }
.section-head { margin-bottom: 48px; }
.section-head .section-tag { display: inline-block; font-size: 13px; font-weight: 600; color: var(--accent); background: rgba(214,165,92,0.12); padding: 4px 14px; border-radius: var(--radius-tag); margin-bottom: 12px; letter-spacing: 1px; }
.section-head h2 { font-size: 32px; font-weight: 700; color: var(--text); line-height: 1.35; margin-bottom: 10px; }
.section-head .bar { width: 48px; height: 3px; background: var(--accent); margin-top: 18px; }
.section-head .lead { color: var(--text-muted); font-size: 16px; max-width: 720px; margin-top: 10px; }

/* 左图右文 */
.split-feature { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split-feature .img-wrap { border-radius: var(--radius-card); overflow: hidden; box-shadow: var(--shadow-hover); }
.split-feature .img-wrap img { width: 100%; height: 420px; object-fit: cover; }
.split-text .text-title { font-size: 26px; font-weight: 700; color: var(--text); margin-bottom: 16px; line-height: 1.4; }
.split-text .text-body { color: var(--text-muted); font-size: 16px; line-height: 1.85; margin-bottom: 16px; }
.check-list { margin-top: 24px; display: flex; flex-direction: column; gap: 10px; }
.check-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 15px; color: var(--text); }
.check-list .check-icon { display: inline-flex; width: 22px; height: 22px; background: var(--success); color: #fff; border-radius: 50%; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; flex-shrink: 0; margin-top: 3px; }
.check-list .muted { color: var(--text-muted); }

/* 步骤指南 */
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-card); padding: 32px 26px; transition: all .25s; position: relative; }
.step-card:hover { border-color: var(--accent); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.step-num { font-size: 42px; font-weight: 800; color: rgba(15,61,54,0.15); line-height: 1; margin-bottom: 18px; display: block; }
.step-card h3 { font-size: 20px; font-weight: 600; color: var(--text); margin-bottom: 10px; }
.step-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }
.step-card .step-tag { display: inline-block; font-size: 12px; color: var(--accent); background: rgba(214,165,92,0.1); padding: 2px 10px; border-radius: var(--radius-tag); margin-top: 12px; }

/* 等级卡片 */
.tier-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.tier-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-card); padding: 36px; position: relative; transition: all .25s; }
.tier-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); border-color: var(--accent); }
.tier-card.featured { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), var(--shadow-hover); }
.tier-badge { position: absolute; top: -12px; left: 26px; background: var(--accent); color: var(--primary-dark); font-size: 12px; font-weight: 700; padding: 3px 14px; border-radius: 8px; letter-spacing: 1px; }
.tier-name { font-size: 20px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.tier-level { font-size: 13px; color: var(--text-muted); margin-bottom: 18px; }
.tier-price { font-size: 28px; font-weight: 800; color: var(--primary); margin-bottom: 18px; }
.tier-price span { font-size: 14px; font-weight: 400; color: var(--text-muted); }
.tier-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 24px; }
.tier-list li { font-size: 14px; color: var(--text); padding-left: 20px; position: relative; }
.tier-list li::before { content: '◆'; position: absolute; left: 0; font-size: 9px; color: var(--accent); top: 6px; }
.tier-list li.unavailable { color: #c0c0c0; }
.tier-list li.unavailable::before { color: #d0d0d0; }

/* 支付信息区 */
.payment-band { background: var(--primary); border-radius: var(--radius-card); padding: 48px 48px 48px 48px; display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.payment-info h3 { color: #fff; font-size: 24px; margin-bottom: 12px; }
.payment-info p { color: rgba(255,255,255,0.85); font-size: 15px; line-height: 1.8; }
.payment-methods { display: flex; flex-wrap: wrap; gap: 12px; }
.method-chip { background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.2); color: #fff; font-size: 13px; padding: 8px 16px; border-radius: 20px; transition: background .2s; }
.method-chip:hover { background: rgba(255,255,255,0.22); }
.notice-box { background: rgba(255,255,255,0.06); border-left: 3px solid var(--accent); padding: 14px 18px; color: rgba(255,255,255,0.9); font-size: 14px; margin-top: 20px; }

/* FAQ */
.faq-wrap { max-width: 820px; margin: 0 auto; }
.faq-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-card); margin-bottom: 14px; overflow: hidden; transition: box-shadow .2s; }
.faq-item.active { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.faq-q { display: flex; justify-content: space-between; align-items: center; padding: 20px 24px; cursor: pointer; font-size: 16px; font-weight: 500; color: var(--text); }
.faq-q .arrow { font-size: 14px; color: var(--accent); transition: transform .2s; flex-shrink: 0; margin-left: 16px; }
.faq-item.active .faq-q .arrow { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .25s ease; color: var(--text-muted); font-size: 15px; line-height: 1.75; background: #fcfbf9; }
.faq-item.active .faq-a { max-height: 400px; padding: 0 24px 20px; }

/* CTA */
.cta-band { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%); border-radius: var(--radius-card); padding: 60px 48px; text-align: center; position: relative; overflow: hidden; }
.cta-band::before { content: ''; position: absolute; top: -40px; right: -40px; width: 200px; height: 200px; background: radial-gradient(circle, rgba(214,165,92,0.15) 0%, transparent 70%); }
.cta-band::after { content: ''; position: absolute; bottom: -60px; left: -30px; width: 260px; height: 160px; background: radial-gradient(circle, rgba(214,165,92,0.08) 0%, transparent 70%); }
.cta-band h3 { color: #fff; font-size: 30px; font-weight: 700; margin-bottom: 14px; position: relative; z-index: 1; }
.cta-band p { color: rgba(255,255,255,0.85); font-size: 16px; max-width: 640px; margin: 0 auto 28px; position: relative; z-index: 1; }
.cta-band .btn-row { display: flex; gap: 16px; justify-content: center; position: relative; z-index: 1; }
.cta-band .btn-outline-light { border: 1px solid rgba(255,255,255,0.6); color: #fff; background: transparent; padding: 14px 32px; font-size: 16px; font-weight: 600; border-radius: var(--radius-btn); transition: all .25s; }
.cta-band .btn-outline-light:hover { background: rgba(255,255,255,0.12); border-color: #fff; }

/* 页脚 */
.site-footer { background: var(--dark); color: rgba(255,255,255,0.7); padding-top: 64px; }
.footer-cols { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; padding-bottom: 40px; }
.footer-brand-name { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.footer-brand p { font-size: 13px; line-height: 1.85; color: rgba(255,255,255,0.6); margin-bottom: 12px; max-width: 360px; }
.domain-link { color: var(--accent); font-size: 13px; }
.domain-link:hover { color: var(--accent-light); }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col a { font-size: 13px; color: rgba(255,255,255,0.6); transition: color .2s; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: 18px 0; text-align: center; }
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.4); }
.footer-bottom a { color: rgba(255,255,255,0.55); }
.footer-bottom a:hover { color: var(--accent); }

/* 响应式 */
@media (max-width: 1199px) {
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 991px) {
  .nav-links { display: none; }
  .hamburger { display: block; }
  .split-feature { grid-template-columns: 1fr; gap: 40px; }
  .split-feature .img-wrap img { height: 320px; }
  .payment-band { grid-template-columns: 1fr; }
  .page-hero h1 { font-size: 34px; }
  .section-head h2 { font-size: 26px; }
  .cta-band h3 { font-size: 24px; }
}
@media (max-width: 767px) {
  :root { --space: 40px; }
  .topbar-actions a:first-child { display: none; }
  .brand-main { font-size: 18px; }
  .brand-sub { font-size: 10px; }
  .page-hero p { font-size: 14px; }
  .page-hero h1 { font-size: 26px; }
  .split-feature .img-wrap img { height: 220px; }
  .steps-grid { grid-template-columns: 1fr; }
  .tier-grid { grid-template-columns: 1fr; }
  .payment-band { padding: 32px 22px; }
  .cta-band { padding: 40px 22px; }
  .cta-band h3 { font-size: 22px; }
  .cta-band .btn-row { flex-direction: column; }
  .footer-cols { grid-template-columns: 1fr; gap: 32px; }
  .section-head h2 { font-size: 22px; }
  .split-text .text-title { font-size: 22px; }
  .step-card { padding: 24px 20px; }
  .tier-card { padding: 28px 22px; }
}

/* roulang page: article */
:root {
  --primary: #0F3D36;
  --primary-dark: #072D26;
  --accent: #D6A55C;
  --accent-2: #E8C47D;
  --bg: #F7F5F1;
  --deep-bg: #0B2C28;
  --text: #232824;
  --text-muted: #5C6B63;
  --border: #D8D2C8;
  --success: #2E7D4F;
  --error: #B34747;
  --radius: 8px;
  --radius-btn: 4px;
  --shadow: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-hover: 0 8px 20px rgba(0,0,0,0.10);
  --transition: all 0.2s ease;
  --container: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 顶部信息条 */
.top-bar {
  background: var(--primary);
  height: 36px;
  line-height: 36px;
}

.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 36px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.top-bar-domain {
  color: rgba(255,255,255,0.85);
  font-size: 13px;
  letter-spacing: 0.3px;
}

.top-bar-domain:hover {
  color: var(--accent-2);
}

.top-bar-actions {
  display: flex;
  gap: 8px;
  font-size: 13px;
}

.top-bar-actions a {
  color: var(--accent-2);
}

.top-bar-actions a:hover {
  color: #fff;
}

.top-bar-divider {
  color: rgba(255,255,255,0.4);
}

/* 主导航 */
.main-nav {
  background: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  position: sticky;
  top: 0;
  z-index: 100;
}

.main-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.brand-main {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.5px;
  line-height: 1.2;
}

.brand-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  margin-left: 2px;
  vertical-align: middle;
}

.brand-sub {
  font-size: 12px;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 1px 8px;
  border-radius: 3px;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-left: 6px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 4px;
}

.nav-links a {
  padding: 8px 16px;
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  border-radius: 4px;
}

.nav-links a:hover {
  color: var(--primary);
  background: rgba(15,61,54,0.06);
}

.nav-links a.active {
  color: var(--primary);
  font-weight: 600;
  box-shadow: inset 0 -2px 0 var(--accent);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 4px;
  border: 2px solid transparent;
  transition: var(--transition);
  line-height: 1.2;
}

.btn-primary {
  background: var(--accent);
  color: var(--primary-dark);
  border-color: var(--accent);
}

.btn-primary:hover {
  background: var(--accent-2);
  border-color: var(--accent-2);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(214,165,92,0.3);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(15,61,54,0.15);
}

.btn-outline-light {
  background: transparent;
  border: 2px solid rgba(255,255,255,0.7);
  color: #fff;
}

.btn-outline-light:hover {
  background: rgba(255,255,255,0.1);
  border-color: #fff;
  transform: translateY(-2px);
}

.hamburger {
  display: none;
  background: none;
  border: none;
  font-size: 26px;
  color: var(--primary);
  line-height: 1;
  padding: 4px 8px;
}

.mobile-menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #fff;
  padding: 12px 24px 20px;
  display: none;
  flex-direction: column;
  box-shadow: 0 12px 24px rgba(0,0,0,0.12);
  z-index: 99;
  border-top: 1px solid var(--border);
}

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

.mobile-menu a {
  padding: 13px 8px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
}

.mobile-menu a:last-child {
  border-bottom: none;
}

.mobile-menu a.active {
  color: var(--primary);
  font-weight: 600;
}

/* 面包屑 */
.breadcrumb-bar {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
  font-size: 13px;
  color: var(--text-muted);
}

.breadcrumb-bar .container {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.breadcrumb-bar a {
  color: var(--text-muted);
}

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

.breadcrumb-bar .sep {
  margin: 0 8px;
  color: var(--border);
}

/* 文章头部 */
.article-header {
  padding: 56px 0 32px;
  background: linear-gradient(180deg, rgba(15,61,54,0.04) 0%, rgba(247,245,241,0) 100%);
}

.article-header .container {
  max-width: 860px;
}

.article-category {
  display: inline-flex;
  align-items: center;
  background: rgba(214,165,92,0.15);
  color: #8a6a2f;
  font-size: 13px;
  padding: 4px 14px;
  border-radius: 4px;
  font-weight: 600;
  margin-bottom: 18px;
}

.article-title {
  font-size: 44px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.5px;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 22px;
  color: var(--text-muted);
  font-size: 13px;
}

.article-meta .meta-source {
  color: var(--primary);
  font-weight: 600;
}

.article-meta .meta-divider {
  width: 1px;
  height: 12px;
  background: var(--border);
}

/* 正文阅读区 */
.article-content {
  padding: 40px 0 64px;
}

.article-content .container {
  max-width: 780px;
}

.article-body {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
}

.article-body > *:first-child {
  margin-top: 0;
}

.article-body h2 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.35;
  margin: 1.8em 0 0.8em;
  padding-bottom: 0.3em;
  border-bottom: 2px solid rgba(214,165,92,0.3);
}

.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.4;
  margin: 1.6em 0 0.6em;
}

.article-body p {
  margin-bottom: 1.5em;
}

.article-body p:last-child {
  margin-bottom: 0;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.5em 1.2em;
  padding-left: 0.5em;
}

.article-body li {
  margin-bottom: 0.5em;
}

.article-body a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.article-body blockquote {
  border-left: 4px solid var(--accent);
  background: rgba(214,165,92,0.08);
  padding: 16px 20px;
  margin: 1.5em 0;
  border-radius: 0 8px 8px 0;
  color: var(--text-muted);
  font-style: normal;
}

.article-body blockquote p:last-child {
  margin-bottom: 0;
}

.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin: 1.5em 0;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 14px;
  line-height: 1.6;
}

.article-body th,
.article-body td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}

.article-body th {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
}

.article-body code {
  background: rgba(15,61,54,0.08);
  padding: 2px 8px;
  border-radius: 4px;
  font-family: "SF Mono", "Consolas", "Menlo", monospace;
  font-size: 0.9em;
}

.article-body pre {
  background: var(--primary-dark);
  color: #e8e2d8;
  padding: 20px;
  border-radius: 8px;
  overflow-x: auto;
  margin: 1.5em 0;
  line-height: 1.6;
}

.article-body pre code {
  background: none;
  padding: 0;
  color: inherit;
  font-size: 14px;
}

/* 空状态 */
.article-empty {
  text-align: center;
  padding: 70px 20px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.article-empty p {
  font-size: 20px;
  color: var(--text-muted);
  margin-bottom: 28px;
}

/* 相关推荐 */
.article-recommend {
  background: #fff;
  padding: 64px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-title {
  text-align: center;
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.35;
}

.section-title::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: var(--accent);
  margin: 16px auto 0;
  border-radius: 2px;
}

.recommend-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 44px;
}

.recommend-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.recommend-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
}

.recommend-card .cover {
  width: 100%;
  height: 180px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.recommend-card:hover .cover {
  transform: scale(1.03);
}

.recommend-card-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.recommend-card-tag {
  display: inline-block;
  font-size: 12px;
  color: #8a6a2f;
  background: rgba(214,165,92,0.12);
  padding: 3px 10px;
  border-radius: 4px;
  margin-bottom: 12px;
  align-self: flex-start;
}

.recommend-card h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 8px;
  color: var(--text);
}

.recommend-card h3 a:hover {
  color: var(--primary);
}

.recommend-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.65;
  margin-top: auto;
}

/* 返回入口 CTA */
.article-return {
  padding: 56px 0;
  background: var(--bg);
}

.article-return .container {
  max-width: 860px;
}

.return-box {
  background: linear-gradient(135deg, var(--primary-dark) 0%, #175347 60%, #1e5c4d 100%);
  border-radius: 12px;
  padding: 52px 48px;
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.return-box::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 160px;
  height: 160px;
  border: 2px solid rgba(214,165,92,0.2);
  border-radius: 50%;
}

.return-box::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: -30px;
  width: 200px;
  height: 200px;
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 50%;
}

.return-box h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 10px;
  color: #fff;
  position: relative;
  z-index: 1;
}

.return-box p {
  color: rgba(255,255,255,0.8);
  margin-bottom: 28px;
  font-size: 15px;
  position: relative;
  z-index: 1;
}

.return-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* 页脚 */
.site-footer {
  background: var(--deep-bg);
  color: rgba(255,255,255,0.75);
  padding: 60px 0 0;
}

.footer-cols {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand-name {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 16px;
  color: rgba(255,255,255,0.65);
}

.domain-link {
  color: var(--accent-2);
  font-size: 14px;
}

.domain-link:hover {
  color: #fff;
}

.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 18px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  color: rgba(255,255,255,0.65);
  font-size: 14px;
}

.footer-col a:hover {
  color: var(--accent-2);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  margin-top: 48px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}

.footer-bottom a {
  color: rgba(255,255,255,0.65);
}

.footer-bottom a:hover {
  color: var(--accent-2);
}

/* 响应式 */
@media (max-width: 1199px) {
  .footer-cols {
    grid-template-columns: 1.2fr 1fr 1fr 1fr;
    gap: 28px;
  }
}

@media (max-width: 991px) {
  .footer-cols {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .recommend-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .article-title {
    font-size: 34px;
  }
}

@media (max-width: 767px) {
  .top-bar-actions {
    display: none;
  }

  .nav-links {
    display: none;
  }

  .hamburger {
    display: block;
  }

  .nav-cta .btn {
    padding: 8px 16px;
    font-size: 14px;
  }

  .brand-main {
    font-size: 20px;
  }

  .brand-sub {
    font-size: 11px;
    padding: 1px 6px;
  }

  .mobile-menu {
    display: none;
  }

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

  .breadcrumb-bar {
    padding: 12px 0;
  }

  .article-header {
    padding: 36px 0 24px;
  }

  .article-title {
    font-size: 26px;
  }

  .article-meta {
    gap: 12px;
    font-size: 12px;
  }

  .article-content {
    padding: 28px 0 48px;
  }

  .article-body h2 {
    font-size: 22px;
  }

  .article-body h3 {
    font-size: 19px;
  }

  .recommend-grid {
    grid-template-columns: 1fr;
    margin-top: 32px;
  }

  .article-recommend {
    padding: 48px 0;
  }

  .section-title {
    font-size: 26px;
  }

  .return-box {
    padding: 40px 24px;
  }

  .return-box h3 {
    font-size: 20px;
  }

  .footer-cols {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .site-footer {
    padding: 44px 0 0;
  }

  .footer-bottom {
    margin-top: 32px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 20px;
  }

  .top-bar-inner {
    padding: 0 20px;
  }

  .brand-main {
    font-size: 18px;
  }

  .brand-sub {
    display: none;
  }

  .nav-cta .btn {
    padding: 7px 12px;
    font-size: 13px;
  }

  .hamburger {
    font-size: 24px;
  }

  .article-title {
    font-size: 24px;
  }

  .article-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .article-meta .meta-divider {
    display: none;
  }
}

/* roulang page: category2 */
:root {
  --primary: #0F3D36;
  --primary-dark: #072D26;
  --accent: #D6A55C;
  --accent-light: #E8C47D;
  --bg: #F7F5F1;
  --dark-bg: #0B2C28;
  --text: #232824;
  --text-light: #5C6B63;
  --border: #D8D2C8;
  --success: #2E7D4F;
  --error: #B34747;
  --radius: 8px;
  --radius-btn: 4px;
  --shadow: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-hover: 0 8px 20px rgba(0,0,0,0.10);
  --container: 1200px;
  --gap: 24px;
  --topbar-h: 36px;
  --nav-h: 72px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s ease; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--gap); }

/* ===== 顶部信息条 ===== */
.topbar {
  height: var(--topbar-h);
  background: var(--primary);
  color: rgba(255,255,255,.88);
  font-size: 13px;
  display: flex;
  align-items: center;
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; width: 100%; }
.topbar a { color: rgba(255,255,255,.92); font-size: 13px; }
.topbar a:hover { color: var(--accent-light); }
.topbar-right { display: flex; gap: 20px; }
.topbar-right a { color: var(--accent); font-weight: 500; }

/* ===== 主导航 ===== */
.main-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: #fff;
  box-shadow: var(--shadow);
}
.main-nav .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.brand-logo { display: flex; align-items: baseline; gap: 8px; }
.brand-main { font-size: 22px; font-weight: 700; color: var(--primary); letter-spacing: .5px; }
.brand-dot { display: inline-block; width: 6px; height: 6px; background: var(--accent); border-radius: 50%; margin-left: 2px; }
.brand-sub { font-size: 13px; font-weight: 500; color: var(--accent); border: 1px solid var(--accent); border-radius: 4px; padding: 0 6px; line-height: 20px; }
.nav-links { display: flex; gap: 32px; }
.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  position: relative;
  padding: 6px 0;
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s ease;
}
.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }
.nav-links a.active { color: var(--primary); font-weight: 600; }
.nav-cta { display: flex; align-items: center; gap: 14px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 22px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  border: none;
  transition: all .25s ease;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  color: var(--primary-dark);
  box-shadow: 0 2px 6px rgba(214,165,92,.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(214,165,92,.45); }
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-outline:hover { background: rgba(15,61,54,.06); }
.btn-gold {
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  color: var(--primary-dark);
  box-shadow: 0 4px 14px rgba(214,165,92,.3);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(214,165,92,.45); }
.hamburger {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  width: 40px;
  height: 40px;
  font-size: 20px;
  color: var(--primary);
}
.mobile-menu {
  display: none;
  position: absolute;
  top: var(--nav-h);
  left: 0;
  right: 0;
  background: #fff;
  border-top: 1px solid var(--border);
  box-shadow: 0 8px 20px rgba(0,0,0,.08);
  padding: 12px 0;
  z-index: 99;
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  padding: 12px var(--gap);
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-bottom: 1px solid rgba(216,210,200,.5);
}
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu a.active { color: var(--primary); background: rgba(15,61,54,.04); }

/* ===== 页面 Hero ===== */
.page-hero {
  position: relative;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, #0B2C28 100%);
  padding: 80px 0 72px;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  opacity: .18;
}
.page-hero::after {
  content: '';
  position: absolute;
  top: -120px;
  right: -80px;
  width: 400px;
  height: 400px;
  border: 1px solid rgba(214,165,92,.2);
  border-radius: 50%;
  box-shadow: 0 0 0 60px rgba(214,165,92,.04), 0 0 0 120px rgba(214,165,92,.02);
}
.page-hero .container { position: relative; z-index: 2; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,.6);
  margin-bottom: 20px;
}
.breadcrumb a { color: rgba(255,255,255,.75); }
.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb span { color: var(--accent-light); }
.page-hero h1 {
  font-size: 44px;
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: .5px;
}
.page-hero .hero-sub {
  font-size: 17px;
  color: rgba(255,255,255,.85);
  max-width: 640px;
  line-height: 1.7;
}

/* ===== 统计概览 ===== */
.stats-bar {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 32px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-item {
  text-align: center;
  padding: 8px 12px;
}
.stat-item .stat-num {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", sans-serif;
}
.stat-item .stat-label {
  font-size: 14px;
  color: var(--text-light);
  margin-top: 6px;
}

/* ===== 时间线权益 ===== */
.timeline-section {
  padding: 80px 0;
  background: var(--bg);
}
.section-head {
  text-align: center;
  margin-bottom: 56px;
}
.section-head .section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.35;
}
.section-head .section-line {
  width: 48px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
  margin: 16px auto 0;
}
.section-head p {
  max-width: 640px;
  margin: 16px auto 0;
  color: var(--text-light);
  font-size: 15px;
}
.timeline {
  position: relative;
  max-width: 960px;
  margin: 0 auto;
  padding: 20px 0;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 120px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--accent) 8%, var(--accent) 92%, transparent);
}
.timeline-item {
  position: relative;
  display: flex;
  margin-bottom: 48px;
  padding-left: 156px;
}
.timeline-item:last-child { margin-bottom: 0; }
.timeline-node {
  position: absolute;
  left: 107px;
  top: 20px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid var(--accent);
  box-shadow: 0 0 0 5px rgba(214,165,92,.15);
  z-index: 1;
}
.timeline-node.is-free { background: #fff; border-color: var(--border); }
.timeline-node.is-silver { background: #c0c7c2; border-color: #9aa69f; }
.timeline-node.is-gold { background: var(--accent); border-color: var(--accent-light); }
.timeline-node.is-black { background: #1a1f1c; border-color: #333; }
.timeline-level {
  position: absolute;
  left: 0;
  top: 14px;
  width: 92px;
  text-align: right;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-light);
  line-height: 28px;
}
.timeline-level strong {
  display: block;
  font-size: 16px;
  color: var(--text);
}
.timeline-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px 32px;
  flex: 1;
  transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
}
.timeline-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
  border-color: var(--accent);
}
.timeline-card .card-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.timeline-card h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
}
.badge {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .5px;
}
.badge-recommend {
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  color: var(--primary-dark);
}
.badge-new { background: rgba(46,125,79,.12); color: var(--success); }
.badge-plain { background: #f0ede8; color: var(--text-light); }
.timeline-card p {
  font-size: 15px;
  color: var(--text-light);
  margin-bottom: 14px;
  line-height: 1.7;
}
.timeline-card ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 16px;
}
.timeline-card ul li {
  font-size: 14px;
  color: var(--text);
  padding-left: 20px;
  position: relative;
}
.timeline-card ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--accent);
  opacity: .7;
}
.timeline-card .price-hint {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--border);
  font-size: 13px;
  color: var(--text-light);
}
.timeline-card .price-hint strong { color: var(--primary); font-size: 15px; }

/* ===== 专属内容 ===== */
.premium-section {
  padding: 80px 0;
  background: #fff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.premium-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.premium-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
}
.premium-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: var(--accent);
}
.premium-card .cover {
  position: relative;
  height: 160px;
  overflow: hidden;
}
.premium-card .cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.premium-card:hover .cover img { transform: scale(1.04); }
.premium-card .cover .lock-overlay {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 32px;
  height: 32px;
  background: rgba(15,61,54,.85);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  color: var(--accent);
  border: 1px solid rgba(255,255,255,.2);
}
.premium-card .cover .tag {
  position: absolute;
  left: 10px;
  bottom: 10px;
  background: rgba(0,0,0,.65);
  color: #fff;
  font-size: 12px;
  padding: 2px 10px;
  border-radius: 4px;
  backdrop-filter: blur(2px);
}
.premium-body { padding: 18px 20px 20px; }
.premium-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.premium-body p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.premium-body .status {
  margin-top: 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 500;
}
.premium-body .status.locked { color: var(--text-light); }
.premium-body .status.unlocked { color: var(--success); }
.premium-body .status .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  display: inline-block;
}
.status.locked .dot { background: var(--border); }
.status.unlocked .dot { background: var(--success); }

/* ===== FAQ ===== */
.faq-section {
  padding: 80px 0;
  background: var(--bg);
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.faq-item.active {
  border-color: var(--accent);
  box-shadow: 0 4px 14px rgba(214,165,92,.15);
}
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  cursor: pointer;
  user-select: none;
}
.faq-question h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
}
.faq-question .faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--accent);
  transition: transform .25s ease, background .25s ease, color .25s ease;
  flex-shrink: 0;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .25s ease;
}
.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.75;
  border-top: 1px solid rgba(214,165,92,.25);
  padding-top: 16px;
  margin: 0 24px 20px;
}

/* ===== CTA ===== */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--primary-dark) 0%, #0B2C28 60%, #1a2f2a 100%);
  position: relative;
  overflow: hidden;
  text-align: center;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: .1;
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 {
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}
.cta-section p {
  font-size: 16px;
  color: rgba(255,255,255,.75);
  max-width: 620px;
  margin: 0 auto 32px;
  line-height: 1.7;
}
.cta-icons {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-bottom: 36px;
}
.cta-icon-item {
  text-align: center;
  color: rgba(255,255,255,.9);
}
.cta-icon-item .ci-icon {
  font-size: 28px;
  color: var(--accent);
  margin-bottom: 6px;
}
.cta-icon-item .ci-text {
  font-size: 13px;
  color: rgba(255,255,255,.7);
}
.cta-buttons { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ===== 相关分类 ===== */
.related-section {
  padding: 64px 0;
  background: #fff;
  border-top: 1px solid var(--border);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  display: block;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
}
.related-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: var(--accent);
  background: #fff;
}
.related-card .rc-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(15,61,54,.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--primary);
  margin-bottom: 16px;
}
.related-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.related-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.65;
}
.related-card .rc-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-top: 14px;
}
.related-card .rc-link:hover { color: var(--accent); }
.related-card .rc-link .arrow { transition: transform .2s ease; }
.related-card:hover .rc-link .arrow { transform: translateX(4px); }

/* ===== 页脚 ===== */
.site-footer {
  background: var(--dark-bg);
  color: rgba(255,255,255,.72);
  padding-top: 60px;
}
.footer-cols {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand .footer-brand-name {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: .5px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(255,255,255,.6);
  margin-bottom: 14px;
}
.domain-link {
  font-size: 14px;
  color: var(--accent);
  font-weight: 500;
}
.domain-link:hover { color: var(--accent-light); }
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  font-size: 14px;
  color: rgba(255,255,255,.62);
}
.footer-col ul a:hover { color: var(--accent-light); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 18px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,.4);
}
.footer-bottom a { color: rgba(255,255,255,.55); }
.footer-bottom a:hover { color: var(--accent-light); }

/* ===== 响应式 ===== */
@media (max-width: 1199px) {
  .timeline::before { left: 100px; }
  .timeline-item { padding-left: 132px; }
  .timeline-node { left: 88px; }
  .timeline-level { width: 74px; }
}
@media (max-width: 991px) {
  .nav-links { gap: 20px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .premium-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-cols { grid-template-columns: 1fr 1fr; gap: 32px; }
  .related-grid { grid-template-columns: 1fr 1fr; }
  .page-hero h1 { font-size: 34px; }
  .section-head h2 { font-size: 28px; }
  .cta-section h2 { font-size: 28px; }
}
@media (max-width: 767px) {
  .topbar-right { display: none; }
  .topbar .container { justify-content: center; }
  .nav-links { display: none; }
  .nav-cta .btn-primary { display: none; }
  .hamburger { display: inline-flex; align-items: center; justify-content: center; }
  .mobile-menu.open { display: block; }
  .page-hero { padding: 56px 0 48px; }
  .page-hero h1 { font-size: 26px; }
  .page-hero .hero-sub { font-size: 15px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .stat-item .stat-num { font-size: 28px; }
  .stats-bar { padding: 20px 0; }
  .timeline-section { padding: 56px 0; }
  .premium-section { padding: 56px 0; }
  .faq-section { padding: 56px 0; }
  .cta-section { padding: 56px 0; }
  .related-section { padding: 48px 0; }
  .section-head { margin-bottom: 40px; }
  .section-head h2 { font-size: 22px; }
  .timeline { padding: 0; }
  .timeline::before { left: 16px; }
  .timeline-item {
    display: block;
    padding-left: 48px;
    margin-bottom: 36px;
  }
  .timeline-node {
    left: 4px;
    top: 4px;
    width: 24px;
    height: 24px;
  }
  .timeline-level {
    position: relative;
    left: auto;
    top: auto;
    width: auto;
    text-align: left;
    margin-bottom: 8px;
  }
  .timeline-level strong { display: inline; font-size: 16px; }
  .timeline-card { padding: 20px; }
  .timeline-card ul { grid-template-columns: 1fr; gap: 6px; }
  .premium-grid { grid-template-columns: 1fr; gap: 16px; }
  .premium-card .cover { height: 180px; }
  .related-grid { grid-template-columns: 1fr; gap: 16px; }
  .footer-cols { grid-template-columns: 1fr; gap: 24px; }
  .cta-buttons { flex-direction: column; align-items: center; }
  .cta-icons { flex-wrap: wrap; gap: 24px; }
}

@media (max-width: 520px) {
  .page-hero h1 { font-size: 24px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .brand-main { font-size: 18px; }
  .brand-sub { font-size: 11px; }
}

/* 焦点状态 */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}