/* roulang page: index */
:root {
      --bg-deep: #0B0E14;
      --bg-block: #12161F;
      --bg-card: #171C26;
      --primary: #F5451E;
      --primary-hover: #FF6B3D;
      --secondary: #00E0C6;
      --secondary-hover: #37F5D8;
      --text-main: #E8ECF1;
      --text-sub: #A0A8B5;
      --text-muted: #5C6470;
      --border: rgba(255, 255, 255, 0.08);
      --radius-card: 16px;
      --radius-img: 12px;
      --radius-btn: 10px;
      --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
      --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.5);
      --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "思源黑体", sans-serif;
    }
    *,
    *::before,
    *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: var(--font-main);
      background: var(--bg-deep);
      color: var(--text-main);
      line-height: 1.8;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: var(--text-main);
      text-decoration: none;
      transition: color .25s ease;
    }
    a:hover {
      color: var(--secondary-hover);
    }
    img {
      max-width: 100%;
      display: block;
    }
    .container {
      max-width: 1280px;
      padding-left: 16px;
      padding-right: 16px;
    }
    .section-spacing {
      padding: 88px 0;
    }
    @media (max-width: 991.98px) {
      .section-spacing {
        padding: 64px 0;
      }
    }
    @media (max-width: 767.98px) {
      .section-spacing {
        padding: 48px 0;
      }
    }
    .section-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 40px;
      flex-wrap: wrap;
      gap: 12px;
    }
    .section-head h2 {
      font-size: 30px;
      font-weight: 700;
      letter-spacing: -0.02em;
      margin: 0;
      position: relative;
      padding-left: 18px;
      line-height: 1.3;
    }
    .section-head h2::before {
      content: '';
      position: absolute;
      left: 0;
      top: 6px;
      bottom: 6px;
      width: 4px;
      border-radius: 99px;
      background: var(--primary);
    }
    .section-head p {
      color: var(--text-sub);
      font-size: 15px;
      margin: 0;
      max-width: 480px;
    }
    .section-head .en-label {
      font-size: 12px;
      text-transform: uppercase;
      letter-spacing: 0.1em;
      color: var(--secondary);
      font-weight: 600;
      margin-left: auto;
    }
    @media (max-width: 575.98px) {
      .section-head {
        margin-bottom: 24px;
      }
      .section-head h2 {
        font-size: 24px;
      }
    }

    /* ===== Header / Nav ===== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1000;
      background: rgba(11, 14, 20, 0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid transparent;
      transition: border-color .3s ease, background .3s ease;
    }
    .site-header.scrolled {
      border-bottom-color: var(--border);
      background: rgba(11, 14, 20, 0.95);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
      position: relative;
    }
    .nav-left,
    .nav-right {
      display: flex;
      align-items: center;
      gap: 8px;
      flex: 1;
    }
    .nav-right {
      justify-content: flex-end;
    }
    .nav-left .nav-link,
    .nav-right .nav-link {
      color: var(--text-sub);
      font-size: 15px;
      font-weight: 500;
      padding: 8px 16px;
      border-radius: 8px;
      position: relative;
      transition: color .25s, background .25s;
    }
    .nav-left .nav-link:hover,
    .nav-right .nav-link:hover {
      color: var(--text-main);
      background: rgba(255, 255, 255, 0.04);
    }
    .nav-left .nav-link.active,
    .nav-right .nav-link.active {
      color: var(--primary);
      font-weight: 600;
    }
    .nav-left .nav-link.active::after,
    .nav-right .nav-link.active::after {
      content: '';
      position: absolute;
      left: 16px;
      right: 16px;
      bottom: 2px;
      height: 2px;
      border-radius: 2px;
      background: var(--primary);
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 4px;
      padding: 0 8px;
      flex-shrink: 0;
      font-size: 24px;
      font-weight: 900;
      letter-spacing: -0.02em;
      color: var(--text-main);
      text-decoration: none;
    }
    .brand-logo:hover {
      color: var(--text-main);
    }
    .brand-logo .brand-mark {
      background: var(--primary);
      color: #fff;
      padding: 4px 12px;
      border-radius: 8px;
      font-size: 20px;
      letter-spacing: 0.02em;
      line-height: 1.4;
    }
    .brand-logo .brand-text {
      font-size: 22px;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: 0.02em;
    }
    .menu-toggle {
      display: none;
      background: transparent;
      border: none;
      width: 44px;
      height: 44px;
      position: relative;
      z-index: 1101;
      cursor: pointer;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      gap: 5px;
    }
    .menu-toggle span {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--text-main);
      border-radius: 2px;
      transition: transform .3s, opacity .3s;
    }
    .menu-toggle.active span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }
    .menu-toggle.active span:nth-child(2) {
      opacity: 0;
    }
    .menu-toggle.active span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }
    .mobile-menu {
      display: none;
      position: fixed;
      top: 72px;
      left: 0;
      right: 0;
      background: var(--bg-deep);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
      padding: 8px 0;
      z-index: 1000;
      transform: translateY(-16px);
      opacity: 0;
      transition: transform .3s ease, opacity .3s ease;
    }
    .mobile-menu.open {
      transform: translateY(0);
      opacity: 1;
    }
    .mobile-menu a {
      display: block;
      height: 48px;
      line-height: 48px;
      padding: 0 24px;
      font-size: 16px;
      font-weight: 500;
      color: var(--text-sub);
      border-bottom: 1px solid var(--border);
    }
    .mobile-menu a:last-child {
      border-bottom: none;
    }
    .mobile-menu a:hover {
      color: var(--secondary-hover);
    }
    .mobile-menu a.active {
      color: var(--primary);
      font-weight: 600;
    }
    @media (max-width: 991.98px) {
      .nav-left,
      .nav-right {
        display: none;
      }
      .menu-toggle {
        display: flex;
      }
      .mobile-menu {
        display: block;
        visibility: hidden;
        pointer-events: none;
      }
      .mobile-menu.open {
        visibility: visible;
        pointer-events: auto;
      }
    }

    /* ===== Hero ===== */
    .hero {
      position: relative;
      min-height: 90vh;
      display: flex;
      align-items: center;
      background: linear-gradient(90deg, rgba(11, 14, 20, 0.92) 0%, rgba(11, 14, 20, 0.65) 60%, rgba(11, 14, 20, 0.2) 100%),
        linear-gradient(180deg, rgba(11, 14, 20, 0.2) 0%, transparent 50%, rgba(11, 14, 20, 0.9) 100%),
        url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
      padding-top: 72px;
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: radial-gradient(ellipse at 20% 80%, rgba(245, 69, 30, 0.08) 0%, transparent 50%);
      pointer-events: none;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 720px;
      padding: 60px 0;
    }
    .hero-content .hero-badge {
      display: inline-block;
      background: rgba(245, 69, 30, 0.15);
      border: 1px solid rgba(245, 69, 30, 0.3);
      color: var(--primary-hover);
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.08em;
      padding: 6px 16px;
      border-radius: 999px;
      margin-bottom: 24px;
      text-transform: uppercase;
    }
    .hero-content h1 {
      font-size: 52px;
      font-weight: 900;
      line-height: 1.2;
      letter-spacing: -0.02em;
      margin-bottom: 20px;
      color: var(--text-main);
    }
    .hero-content .hero-sub {
      font-size: 17px;
      color: var(--text-sub);
      line-height: 1.8;
      max-width: 560px;
      margin-bottom: 32px;
    }
    .hero-cta {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 40px;
    }
    .btn-primary-custom {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--primary);
      color: #fff;
      font-size: 15px;
      font-weight: 600;
      padding: 13px 28px;
      border-radius: var(--radius-btn);
      border: none;
      cursor: pointer;
      transition: background .25s, transform .25s, box-shadow .25s;
      text-decoration: none;
    }
    .btn-primary-custom:hover {
      background: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 0 0 3px rgba(245, 69, 30, 0.25);
      color: #fff;
    }
    .btn-outline-custom {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: transparent;
      color: #fff;
      font-size: 15px;
      font-weight: 600;
      padding: 13px 28px;
      border-radius: var(--radius-btn);
      border: 1px solid rgba(255, 255, 255, 0.6);
      cursor: pointer;
      transition: border-color .25s, color .25s, transform .25s;
      text-decoration: none;
    }
    .btn-outline-custom:hover {
      border-color: var(--secondary);
      color: var(--secondary-hover);
      transform: translateY(-2px);
    }
    .hero-stats {
      display: flex;
      gap: 32px;
      flex-wrap: wrap;
      padding: 20px 24px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      backdrop-filter: blur(8px);
      max-width: 600px;
    }
    .hero-stat {
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--text-sub);
      font-size: 14px;
      font-weight: 500;
    }
    .hero-stat i {
      color: var(--secondary);
      font-size: 16px;
    }
    @media (max-width: 767.98px) {
      .hero {
        min-height: 80vh;
      }
      .hero-content h1 {
        font-size: 32px;
      }
      .hero-content .hero-sub {
        font-size: 15px;
      }
      .hero-stats {
        gap: 16px;
        padding: 14px 16px;
      }
      .hero-stat {
        font-size: 13px;
      }
    }

    /* ===== Library Scroll Section ===== */
    .library-section {
      background: var(--bg-deep);
      overflow: hidden;
    }
    .library-scroll {
      display: flex;
      gap: 24px;
      overflow-x: auto;
      scroll-snap-type: x mandatory;
      padding-bottom: 20px;
      margin-bottom: -20px;
    }
    .library-scroll::-webkit-scrollbar {
      display: none;
    }
    .library-scroll {
      -ms-overflow-style: none;
      scrollbar-width: none;
    }
    .library-card {
      flex: 0 0 280px;
      scroll-snap-align: start;
      background: var(--bg-card);
      border-radius: var(--radius-card);
      overflow: visible;
      position: relative;
      border: 1px solid var(--border);
      transition: transform .3s ease, box-shadow .3s ease;
    }
    .library-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .library-card .cover-wrap {
      position: relative;
      border-radius: var(--radius-card) var(--radius-card) 0 0;
      overflow: hidden;
      aspect-ratio: 3 / 4;
    }
    .library-card .cover-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .4s ease;
    }
    .library-card:hover .cover-wrap img {
      transform: scale(1.05);
    }
    .library-card .badge-corner {
      position: absolute;
      top: 12px;
      left: 12px;
      padding: 4px 12px;
      border-radius: 999px;
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.04em;
      z-index: 2;
      backdrop-filter: blur(4px);
    }
    .badge-hot {
      background: var(--primary);
      color: #fff;
    }
    .badge-new {
      background: var(--secondary);
      color: #0B0E14;
    }
    .badge-exclusive {
      background: transparent;
      border: 1px solid rgba(255, 255, 255, 0.7);
      color: #fff;
    }
    .library-card .card-body {
      padding: 18px 20px 20px;
    }
    .library-card .card-body h3 {
      font-size: 18px;
      font-weight: 700;
      margin: 0 0 6px;
      line-height: 1.4;
    }
    .library-card .card-body .tag-row {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
    }
    .tag {
      display: inline-block;
      padding: 3px 10px;
      border-radius: 999px;
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.04em;
      background: rgba(255, 255, 255, 0.06);
      color: var(--text-sub);
      border: 1px solid var(--border);
    }
    .tag-primary {
      color: var(--primary-hover);
      background: rgba(245, 69, 30, 0.12);
      border-color: rgba(245, 69, 30, 0.3);
    }
    .tag-secondary {
      color: var(--secondary);
      background: rgba(0, 224, 198, 0.1);
      border-color: rgba(0, 224, 198, 0.3);
    }
    .scroll-arrows {
      display: flex;
      gap: 8px;
    }
    .scroll-btn {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      border: 1px solid var(--border);
      background: var(--bg-card);
      color: var(--text-main);
      font-size: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: background .25s, color .25s, border-color .25s;
    }
    .scroll-btn:hover {
      background: rgba(245, 69, 30, 0.15);
      border-color: var(--primary);
      color: var(--primary-hover);
    }

    /* ===== Hot Grid ===== */
    .hot-section {
      background: var(--bg-block);
    }
    .hot-card {
      background: var(--bg-card);
      border-radius: var(--radius-card);
      overflow: hidden;
      border: 1px solid var(--border);
      height: 100%;
      display: flex;
      flex-direction: column;
      transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
    }
    .hot-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(245, 69, 30, 0.3);
    }
    .hot-card .cover-wrap {
      overflow: hidden;
      position: relative;
    }
    .hot-card .cover-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .4s ease;
    }
    .hot-card:hover .cover-wrap img {
      transform: scale(1.04);
    }
    .hot-card .card-content {
      padding: 20px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .hot-card .card-content .tag-row {
      margin-bottom: 10px;
      display: flex;
      gap: 6px;
      flex-wrap: wrap;
    }
    .hot-card .card-content h3 {
      font-size: 18px;
      font-weight: 700;
      margin: 0 0 8px;
      line-height: 1.4;
    }
    .hot-card .card-content p {
      color: var(--text-sub);
      font-size: 14px;
      line-height: 1.6;
      margin: 0 0 16px;
      flex-grow: 1;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .hot-card .detail-link {
      font-size: 14px;
      font-weight: 600;
      color: var(--secondary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      opacity: 0;
      transform: translateX(-4px);
      transition: opacity .3s, transform .3s;
    }
    .hot-card:hover .detail-link {
      opacity: 1;
      transform: translateX(0);
    }
    .hot-card.hot-featured .cover-wrap {
      aspect-ratio: 3 / 4;
      height: 100%;
    }
    .hot-card.hot-featured .card-content h3 {
      font-size: 22px;
    }
    .hot-featured-wrapper {
      height: 100%;
    }
    .hot-side-card {
      background: var(--bg-card);
      border-radius: var(--radius-card);
      padding: 16px;
      border: 1px solid var(--border);
      display: flex;
      gap: 16px;
      align-items: center;
      transition: border-color .3s, background .3s;
    }
    .hot-side-card:hover {
      border-color: rgba(0, 224, 198, 0.3);
      background: rgba(255, 255, 255, 0.02);
    }
    .hot-side-card img {
      width: 100px;
      height: 72px;
      object-fit: cover;
      border-radius: 8px;
      flex-shrink: 0;
    }
    .hot-side-card .side-info h4 {
      font-size: 15px;
      font-weight: 600;
      margin: 0 0 4px;
      line-height: 1.4;
    }
    .hot-side-card .side-info span {
      font-size: 13px;
      color: var(--text-sub);
    }
    .hot-side-stack {
      display: flex;
      flex-direction: column;
      gap: 16px;
      height: 100%;
    }

    /* ===== Playlist ===== */
    .playlists-section {
      background: var(--bg-deep);
    }
    .playlist-block {
      margin-bottom: 64px;
    }
    .playlist-block:last-child {
      margin-bottom: 0;
    }
    .playlist-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 24px;
    }
    .playlist-head h3 {
      font-size: 24px;
      font-weight: 700;
      margin: 0;
      position: relative;
      padding-left: 16px;
    }
    .playlist-head h3::before {
      content: '';
      position: absolute;
      left: 0;
      top: 8px;
      bottom: 8px;
      width: 3px;
      border-radius: 99px;
      background: var(--secondary);
    }
    .playlist-head h3.playlist-head-primary::before {
      background: var(--primary);
    }
    .playlist-head .view-all {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-sub);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: color .3s, transform .3s;
    }
    .playlist-head .view-all:hover {
      color: var(--secondary-hover);
      transform: translateX(4px);
    }
    .playlist-scroll {
      display: flex;
      gap: 20px;
      overflow-x: auto;
      scroll-snap-type: x mandatory;
      padding-bottom: 16px;
    }
    .playlist-scroll::-webkit-scrollbar {
      display: none;
    }
    .playlist-scroll {
      -ms-overflow-style: none;
      scrollbar-width: none;
    }
    .playlist-card {
      flex: 0 0 240px;
      scroll-snap-align: start;
      background: var(--bg-card);
      border-radius: var(--radius-card);
      overflow: hidden;
      border: 1px solid var(--border);
      transition: transform .3s, box-shadow .3s;
    }
    .playlist-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .playlist-card .cover-wrap {
      position: relative;
      aspect-ratio: 16 / 10;
      overflow: hidden;
    }
    .playlist-card .cover-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .4s;
    }
    .playlist-card:hover .cover-wrap img {
      transform: scale(1.06);
    }
    .playlist-card .card-body {
      padding: 14px 16px 16px;
    }
    .playlist-card .card-body .meta-row {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 8px;
    }
    .playlist-card .card-body .meta-row .time {
      font-size: 12px;
      color: var(--secondary);
      font-weight: 500;
    }
    .playlist-card .card-body h4 {
      font-size: 16px;
      font-weight: 600;
      margin: 0;
      line-height: 1.4;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    /* ===== CTA Banner ===== */
    .cta-banner {
      position: relative;
      padding: 100px 0;
      background: linear-gradient(135deg, rgba(245, 69, 30, 0.12) 0%, transparent 40%),
        url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
      text-align: center;
      overflow: hidden;
    }
    .cta-banner::before {
      content: '';
      position: absolute;
      inset: 0;
      background: rgba(11, 14, 20, 0.75);
    }
    .cta-content {
      position: relative;
      z-index: 2;
      max-width: 640px;
      margin: 0 auto;
    }
    .cta-content h2 {
      font-size: 40px;
      font-weight: 900;
      letter-spacing: -0.02em;
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .cta-content p {
      color: var(--text-sub);
      font-size: 16px;
      margin-bottom: 32px;
    }
    @media (max-width: 767.98px) {
      .cta-banner {
        padding: 64px 0;
      }
      .cta-content h2 {
        font-size: 28px;
      }
    }

    /* ===== Updates / CMS ===== */
    .updates-section {
      background: var(--bg-block);
    }
    .update-item {
      display: flex;
      gap: 20px;
      background: var(--bg-card);
      border-radius: var(--radius-card);
      padding: 20px;
      border: 1px solid var(--border);
      margin-bottom: 20px;
      transition: border-color .3s, transform .3s, box-shadow .3s;
    }
    .update-item:hover {
      border-color: rgba(0, 224, 198, 0.25);
      transform: translateY(-2px);
      box-shadow: var(--shadow-hover);
    }
    .update-item .update-thumb {
      flex-shrink: 0;
      width: 180px;
      height: 120px;
      border-radius: var(--radius-img);
      overflow: hidden;
    }
    .update-item .update-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .4s;
    }
    .update-item:hover .update-thumb img {
      transform: scale(1.05);
    }
    .update-item .update-info {
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .update-item .update-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 8px;
      flex-wrap: wrap;
    }
    .update-item .update-meta .time {
      font-size: 13px;
      color: var(--secondary);
      font-weight: 500;
    }
    .update-item .update-info h3 {
      font-size: 18px;
      font-weight: 700;
      margin: 0 0 8px;
      line-height: 1.4;
    }
    .update-item .update-info h3 a {
      color: var(--text-main);
      text-decoration: none;
      transition: color .3s;
    }
    .update-item .update-info h3 a:hover {
      color: var(--secondary-hover);
    }
    .update-item .summary {
      color: var(--text-sub);
      font-size: 14px;
      line-height: 1.6;
      margin: 0 0 12px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
      flex-grow: 1;
    }
    .update-item .read-more {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-sub);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: color .3s;
    }
    .update-item .read-more:hover {
      color: var(--secondary-hover);
    }
    .update-item .read-more .arrow {
      transition: transform .3s;
    }
    .update-item .read-more:hover .arrow {
      transform: translateX(4px);
    }
    .empty-state {
      text-align: center;
      color: var(--text-muted);
      font-size: 15px;
      padding: 48px 24px;
      background: var(--bg-card);
      border-radius: var(--radius-card);
      border: 1px dashed var(--border);
    }
    @media (max-width: 575.98px) {
      .update-item {
        flex-direction: column;
      }
      .update-item .update-thumb {
        width: 100%;
        height: 180px;
      }
    }

    /* ===== FAQ ===== */
    .faq-section {
      background: var(--bg-deep);
    }
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: 12px;
      margin-bottom: 16px;
      overflow: hidden;
      transition: border-color .3s;
    }
    .faq-item.open {
      border-color: rgba(245, 69, 30, 0.3);
      border-left: 3px solid var(--primary);
    }
    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 18px 24px;
      cursor: pointer;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-main);
      border: none;
      background: transparent;
      width: 100%;
      text-align: left;
      transition: background .3s;
    }
    .faq-question:hover {
      background: rgba(255, 255, 255, 0.02);
    }
    .faq-question .faq-icon {
      width: 24px;
      height: 24px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      color: var(--secondary);
      transition: transform .4s;
      flex-shrink: 0;
    }
    .faq-item.open .faq-question .faq-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      padding: 0 24px 20px;
      color: var(--text-sub);
      font-size: 15px;
      line-height: 1.7;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: #070A0F;
      border-top: 1px solid var(--border);
      padding: 72px 0 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr;
      gap: 48px;
      padding-bottom: 56px;
    }
    .footer-brand .footer-logo {
      font-size: 22px;
      font-weight: 900;
      color: var(--text-main);
      margin-bottom: 16px;
      display: inline-flex;
      gap: 6px;
    }
    .footer-brand .footer-logo .logo-text {
      background: var(--primary);
      padding: 3px 10px;
      border-radius: 6px;
      font-size: 16px;
      color: #fff;
      line-height: 1.4;
    }
    .footer-brand p {
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.7;
      margin: 0;
      max-width: 320px;
    }
    .footer-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }
    .footer-links ul {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links ul li {
      margin-bottom: 10px;
    }
    .footer-links ul li a {
      color: var(--text-muted);
      font-size: 14px;
      transition: color .3s;
    }
    .footer-links ul li a:hover {
      color: var(--secondary-hover);
    }
    .footer-follow .social-icons {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
    }
    .footer-follow .social-icons a {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      border: 1px solid var(--border);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-sub);
      font-size: 16px;
      transition: border-color .3s, color .3s, transform .3s;
    }
    .footer-follow .social-icons a:hover {
      border-color: var(--secondary);
      color: var(--secondary-hover);
      transform: translateY(-2px);
    }
    .footer-bottom {
      border-top: 1px solid var(--border);
      padding: 20px 0;
      text-align: center;
    }
    .footer-bottom p {
      color: var(--text-muted);
      font-size: 13px;
      margin: 0;
    }
    @media (max-width: 767.98px) {
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
        padding-bottom: 32px;
      }
    }

    /* ===== Focus State ===== */
    a:focus-visible,
    button:focus-visible {
      outline: 2px solid var(--secondary);
      outline-offset: 2px;
      border-radius: 4px;
    }
    a,
    button {
      -webkit-tap-highlight-color: transparent;
    }

/* roulang page: category1 */
:root{
  --bg-primary:#0B0E14;
  --bg-secondary:#12161F;
  --bg-card:#171C26;
  --color-primary:#F5451E;
  --color-primary-hover:#FF6B3D;
  --color-secondary:#00E0C6;
  --color-secondary-hover:#37F5D8;
  --text-primary:#E8ECF1;
  --text-secondary:#A0A8B5;
  --text-muted:#5C6470;
  --border-color:rgba(255,255,255,0.08);
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-card:0 8px 24px rgba(0,0,0,0.35);
  --shadow-card-hover:0 12px 40px rgba(0,0,0,0.5);
  --transition-base:all 0.3s ease;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC','Helvetica Neue',Arial,sans-serif;
  background:var(--bg-primary);
  color:var(--text-primary);
  line-height:1.8;
  font-size:16px;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--text-primary);text-decoration:none;transition:var(--transition-base);}
a:hover{color:var(--color-secondary-hover);}
img{max-width:100%;height:auto;display:block;}
.container{max-width:1280px;margin:0 auto;padding:0 24px;}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.35;color:var(--text-primary);}
p{color:var(--text-secondary);}
::selection{background:rgba(245,69,30,0.3);}

/* ===== Header Nav ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(11,14,20,0.85);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:var(--transition-base);
}
.site-header.scrolled{border-bottom:1px solid var(--border-color);}
.nav-container{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;max-width:1280px;margin:0 auto;padding:0 24px;
  position:relative;
}
.nav-left,.nav-right{display:flex;align-items:center;gap:4px;flex:1;min-width:0;}
.nav-right{justify-content:flex-end;}
.nav-link{
  color:var(--text-secondary);
  font-weight:600;font-size:15px;
  padding:8px 18px;border-radius:999px;
  position:relative;
  white-space:nowrap;
}
.nav-link:hover{color:var(--color-secondary-hover);}
.nav-link.active{color:var(--text-primary);}
.nav-link.active::after{
  content:'';position:absolute;bottom:0;left:50%;
  transform:translateX(-50%);
  width:20px;height:3px;
  background:var(--color-primary);
  border-radius:999px;
}
.logo{
  display:flex;align-items:center;
  font-size:24px;font-weight:900;
  color:var(--text-primary);
  letter-spacing:0.02em;
  white-space:nowrap;
  position:absolute;left:50%;top:50%;
  transform:translate(-50%,-50%);
  z-index:5;
}
.logo-text{
  color:var(--color-primary);
  font-weight:900;
  font-family:'Rajdhani','PingFang SC','Microsoft YaHei',sans-serif;
  font-size:28px;
}
.nav-toggle{
  display:none;background:none;border:none;cursor:pointer;
  width:44px;height:44px;
  flex-direction:column;justify-content:center;align-items:center;
  gap:5px;
  padding:0;
}
.nav-toggle .bar{
  display:block;width:22px;height:2px;
  background:var(--text-primary);
  border-radius:2px;
  transition:var(--transition-base);
}
.nav-toggle.active .bar:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.active .bar:nth-child(2){opacity:0;}
.nav-toggle.active .bar:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-menu{
  display:none;
  background:rgba(11,14,20,0.97);
  border-top:1px solid var(--border-color);
  padding:0;
  max-height:0;overflow:hidden;
  transition:max-height 0.35s ease;
}
.mobile-menu.open{max-height:320px;display:block;}
.mobile-link{
  display:block;padding:14px 24px;
  font-size:16px;font-weight:600;
  color:var(--text-secondary);
  border-bottom:1px solid var(--border-color);
}
.mobile-link:hover{color:var(--color-secondary-hover);}
.mobile-link.active{color:var(--color-primary);}

/* ===== Buttons ===== */
.btn-custom{
  display:inline-flex;align-items:center;justify-content:center;
  padding:12px 28px;
  font-size:15px;font-weight:600;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  transition:var(--transition-base);
  cursor:pointer;
  gap:8px;
}
.btn-primary-custom{
  background:var(--color-primary);
  color:#fff;
}
.btn-primary-custom:hover{
  background:var(--color-primary-hover);
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 0 0 3px rgba(245,69,30,0.25);
}
.btn-outline-custom{
  background:transparent;
  border-color:rgba(255,255,255,0.5);
  color:var(--text-primary);
}
.btn-outline-custom:hover{
  border-color:var(--color-secondary);
  color:var(--color-secondary-hover);
}

/* ===== Category Banner ===== */
.category-banner{
  position:relative;
  min-height:46vh;
  display:flex;align-items:center;
  background-size:cover;background-position:center;
  padding:120px 0 60px;
  overflow:hidden;
}
.banner-overlay{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,14,20,0.92) 0%,rgba(11,14,20,0.72) 50%,rgba(11,14,20,0.35) 100%);
}
.banner-overlay::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(0deg,rgba(11,14,20,0.6) 0%,transparent 40%);
}
.banner-content{
  position:relative;z-index:2;
  max-width:1280px;padding:0 24px;
}
.banner-kicker{
  display:inline-block;
  font-family:'Rajdhani',sans-serif;
  font-size:13px;font-weight:700;
  letter-spacing:0.12em;
  color:var(--color-secondary);
  text-transform:uppercase;
  margin-bottom:12px;
  border:1px solid rgba(0,224,198,0.3);
  border-radius:999px;
  padding:4px 16px;
  background:rgba(0,224,198,0.06);
}
.category-banner h1{
  font-size:52px;font-weight:900;
  letter-spacing:0.01em;
  margin-bottom:16px;
  color:var(--text-primary);
}
.banner-content>p{
  font-size:17px;
  color:var(--text-secondary);
  max-width:540px;
  line-height:1.7;
}

/* ===== Section Common ===== */
.section-grid{padding:88px 0;background:var(--bg-primary);}
.section-features{padding:80px 0;background:var(--bg-secondary);}
.section-intro{padding:88px 0;background:var(--bg-primary);}
.section-faq{padding:80px 0;background:var(--bg-secondary);}
.section-cta{position:relative;padding:88px 0;background-size:cover;background-position:center;overflow:hidden;}
.section-header{
  text-align:center;
  margin-bottom:48px;
}
.section-header h2{
  font-size:30px;
  font-weight:900;
  margin-bottom:8px;
  letter-spacing:0.01em;
}
.section-header p{
  font-size:15px;
  color:var(--text-secondary);
  max-width:560px;
  margin:0 auto;
}
.section-header .section-en{
  font-family:'Rajdhani',sans-serif;
  font-size:12px;
  font-weight:700;
  letter-spacing:0.18em;
  text-transform:uppercase;
  color:var(--color-primary);
  display:block;
  margin-bottom:6px;
}

/* ===== Event Cards ===== */
.event-card{
  background:var(--bg-card);
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid transparent;
  box-shadow:var(--shadow-card);
  transition:var(--transition-base);
  height:100%;
  display:flex;flex-direction:column;
}
.event-card:hover{
  box-shadow:var(--shadow-card-hover);
  transform:translateY(-4px);
  border-color:rgba(245,69,30,0.25);
}
.card-media{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  border-radius:var(--radius-card) var(--radius-card) 0 0;
}
.card-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform 0.5s ease;
}
.event-card:hover .card-media img{transform:scale(1.05);}
.card-media::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(0deg,rgba(11,14,20,0.2) 0%,transparent 50%);
}
.badge-round{
  position:absolute;top:12px;left:12px;z-index:3;
  font-size:12px;font-weight:700;
  padding:4px 14px;
  border-radius:999px;
  color:#fff;
  letter-spacing:0.05em;
}
.badge-hot{background:var(--color-primary);}
.badge-new{background:var(--color-secondary);color:var(--bg-primary);}
.badge-exclusive{
  background:transparent;
  border:1px solid rgba(255,255,255,0.7);
  color:#fff;
}
.card-tag{
  position:absolute;bottom:12px;left:12px;z-index:3;
  font-size:12px;font-weight:600;
  color:rgba(255,255,255,0.9);
  background:rgba(11,14,20,0.55);
  padding:3px 12px;
  border-radius:999px;
  backdrop-filter:blur(4px);
}
.card-body{
  padding:20px 22px 22px;
  flex:1;
  display:flex;flex-direction:column;
}
.card-body h3{
  font-size:18px;
  font-weight:700;
  margin-bottom:8px;
  line-height:1.4;
  color:var(--text-primary);
}
.card-body p{
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.7;
  margin-bottom:16px;
  flex:1;
}
.card-link{
  display:inline-flex;align-items:center;
  gap:6px;
  font-size:14px;font-weight:600;
  color:var(--color-secondary);
}
.card-link i{transition:transform 0.3s ease;}
.card-link:hover{color:var(--color-secondary-hover);}
.card-link:hover i{transform:translateX(4px);}

/* ===== Feature Cards ===== */
.feature-card{
  background:var(--bg-card);
  border-radius:var(--radius-card);
  padding:32px 28px;
  height:100%;
  border:1px solid var(--border-color);
  transition:var(--transition-base);
}
.feature-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-card-hover);
  border-color:rgba(0,224,198,0.2);
}
.feature-icon{
  width:56px;height:56px;
  display:flex;align-items:center;justify-content:center;
  border-radius:14px;
  background:rgba(245,69,30,0.12);
  color:var(--color-primary);
  font-size:24px;
  margin-bottom:20px;
  transition:var(--transition-base);
}
.feature-card:hover .feature-icon{
  background:var(--color-primary);
  color:#fff;
  box-shadow:0 0 24px rgba(245,69,30,0.3);
}
.feature-card h3{
  font-size:18px;font-weight:700;
  margin-bottom:8px;
}
.feature-card p{
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.7;
  margin-bottom:0;
}

/* ===== Intro Section ===== */
.section-intro .intro-media{
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  position:relative;
}
.intro-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.section-intro h2{
  font-size:28px;
  font-weight:900;
  margin-bottom:16px;
  letter-spacing:0.02em;
}
.section-intro h2::before{
  content:'';display:block;
  width:40px;height:4px;
  background:var(--color-primary);
  border-radius:2px;
  margin-bottom:14px;
}
.section-intro .intro-text p{
  font-size:15px;
  color:var(--text-secondary);
  line-height:1.85;
  margin-bottom:16px;
}
.intro-list{
  list-style:none;
  padding:0;
  margin:20px 0 0;
}
.intro-list li{
  display:flex;align-items:flex-start;
  gap:10px;
  margin-bottom:10px;
  font-size:15px;
  color:var(--text-primary);
}
.intro-list li i{
  color:var(--color-secondary);
  margin-top:5px;
  font-size:14px;
}
.intro-badge{
  position:absolute;top:16px;right:16px;
  display:inline-block;
  background:var(--color-primary);
  color:#fff;
  font-size:12px;font-weight:700;
  padding:6px 16px;
  border-radius:999px;
  transform:rotate(3deg);
  box-shadow:0 4px 16px rgba(245,69,30,0.3);
  font-family:'Rajdhani',sans-serif;
  letter-spacing:0.08em;
}

/* ===== FAQ Accordion ===== */
.custom-accordion .accordion-item{
  background:var(--bg-card);
  border:1px solid var(--border-color);
  border-radius:var(--radius-card);
  margin-bottom:12px;
  overflow:hidden;
}
.custom-accordion .accordion-item:first-of-type{border-radius:var(--radius-card);}
.custom-accordion .accordion-item:last-of-type{border-radius:var(--radius-card);}
.custom-accordion .accordion-header{
  border-bottom:none;
}
.custom-accordion .accordion-button{
  background:var(--bg-card);
  color:var(--text-primary);
  font-size:16px;
  font-weight:600;
  padding:18px 24px;
  border:none;
  box-shadow:none;
}
.custom-accordion .accordion-button:not(.collapsed){
  background:var(--bg-card);
  color:var(--color-primary);
  box-shadow:none;
}
.custom-accordion .accordion-button:focus{
  box-shadow:none;
  outline:2px solid var(--color-secondary);
  outline-offset:2px;
  z-index:2;
}
.custom-accordion .accordion-button::after{
  background-image:none;
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  content:"\f067";
  color:var(--text-secondary);
  font-size:14px;
  width:auto;height:auto;
  transition:transform 0.3s ease;
}
.custom-accordion .accordion-button:not(.collapsed)::after{
  transform:rotate(45deg);
  color:var(--color-primary);
}
.custom-accordion .accordion-body{
  padding:0 24px 20px;
  color:var(--text-secondary);
  font-size:15px;
  line-height:1.75;
  border-top:1px solid var(--border-color);
  padding-top:16px;
}
.accordion-item.active-border{
  border-left:3px solid var(--color-primary);
}

/* ===== CTA Section ===== */
.section-cta .cta-overlay{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,14,20,0.9) 0%,rgba(11,14,20,0.6) 100%);
}
.cta-inner{
  position:relative;z-index:2;
  text-align:center;
  max-width:680px;
  margin:0 auto;
}
.cta-inner h2{
  font-size:34px;
  font-weight:900;
  margin-bottom:12px;
  color:var(--text-primary);
  letter-spacing:0.02em;
}
.cta-inner p{
  font-size:16px;
  color:var(--text-secondary);
  margin-bottom:28px;
}
.cta-inner .btn-custom{margin:0 8px;}

/* ===== Footer ===== */
.site-footer{
  background:#080A0F;
  border-top:1px solid var(--border-color);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.2fr 1fr 1fr;
  gap:48px;
  padding-bottom:40px;
  border-bottom:1px solid var(--border-color);
}
.footer-brand .footer-logo{
  font-size:22px;
  font-weight:900;
  color:var(--text-primary);
  margin-bottom:12px;
}
.footer-brand .footer-logo .logo-text{
  font-family:'Rajdhani',sans-serif;
  font-size:26px;
}
.footer-brand p{
  font-size:14px;
  color:var(--text-muted);
  line-height:1.8;
  max-width:320px;
}
.footer-title{
  font-size:15px;
  font-weight:700;
  color:var(--text-primary);
  margin-bottom:16px;
  letter-spacing:0.05em;
}
.footer-links ul{
  list-style:none;padding:0;margin:0;
}
.footer-links li{
  margin-bottom:10px;
}
.footer-links a{
  color:var(--text-secondary);
  font-size:14px;
  transition:var(--transition-base);
}
.footer-links a:hover{
  color:var(--color-secondary-hover);
}
.social-icons{
  display:flex;
  gap:12px;
}
.social-icons a{
  width:40px;height:40px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:var(--bg-card);
  border:1px solid var(--border-color);
  color:var(--text-secondary);
  font-size:16px;
  transition:var(--transition-base);
}
.social-icons a:hover{
  background:var(--color-primary);
  color:#fff;
  border-color:var(--color-primary);
  transform:translateY(-3px);
  box-shadow:0 8px 20px rgba(245,69,30,0.25);
}
.footer-bottom{
  padding:20px 0;
  text-align:center;
}
.footer-bottom p{
  font-size:13px;
  color:var(--text-muted);
  margin:0;
}

/* ===== Focus Visibility ===== */
a:focus-visible,button:focus-visible,.accordion-button:focus-visible{
  outline:2px solid var(--color-secondary);
  outline-offset:2px;
  border-radius:4px;
}
.event-card a:focus-visible{
  outline:none;
}

/* ===== Responsive ===== */
@media (max-width:1199.98px){
  .section-grid,.section-intro{padding:72px 0;}
  .section-features,.section-faq{padding:64px 0;}
  .category-banner h1{font-size:44px;}
}
@media (max-width:991.98px){
  .nav-left,.nav-right{display:none;}
  .nav-toggle{display:flex;}
  .logo{position:static;transform:none;margin:0 auto;}
  .nav-container{justify-content:space-between;}
  .mobile-menu{display:block;}
  .section-grid,.section-intro{padding:64px 0;}
  .section-features,.section-faq{padding:56px 0;}
  .category-banner{min-height:40vh;}
  .category-banner h1{font-size:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-inner h2{font-size:28px;}
}
@media (max-width:767.98px){
  .category-banner{padding:100px 0 40px;min-height:36vh;}
  .category-banner h1{font-size:30px;}
  .banner-content>p{font-size:15px;}
  .section-grid,.section-intro{padding:48px 0;}
  .section-features,.section-faq{padding:40px 0;}
  .section-header h2{font-size:24px;}
  .card-body h3{font-size:17px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-brand p{max-width:100%;}
  .cta-inner h2{font-size:24px;}
  .cta-inner .btn-custom{display:block;width:100%;margin:8px 0;}
  .feature-card{padding:24px 20px;}
  .intro-media img{aspect-ratio:16/10;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .nav-container{padding:0 16px;}
  .category-banner h1{font-size:26px;}
  .section-header p{font-size:14px;}
  .card-body{padding:16px 18px;}
}

/* roulang page: article */
/* ========== 设计变量 ========== */
    :root {
      --bg-body: #0B0E14;
      --bg-section: #12161F;
      --bg-card: #171C26;
      --bg-footer: #090C11;
      --primary: #F5451E;
      --primary-hover: #FF6B3D;
      --primary-glow: rgba(245, 69, 30, 0.25);
      --accent: #00E0C6;
      --accent-hover: #37F5D8;
      --accent-glow: rgba(0, 224, 198, 0.15);
      --text-main: #E8ECF1;
      --text-muted: #A0A8B5;
      --text-dim: #5C6470;
      --border: rgba(255, 255, 255, 0.08);
      --border-strong: rgba(255, 255, 255, 0.14);
      --radius-card: 16px;
      --radius-img: 12px;
      --radius-btn: 10px;
      --radius-pill: 999px;
      --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
      --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.5);
      --font-cn: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', 'Source Han Sans SC', sans-serif;
      --transition: .3s cubic-bezier(.4, 0, .2, 1);
      --header-height: 76px;
    }

    /* ========== Reset / Base ========== */
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-cn);
      background: var(--bg-body);
      color: var(--text-main);
      line-height: 1.8;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      padding-top: var(--header-height);
    }

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

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

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

    ul, ol {
      list-style: none;
    }

    button, input, textarea {
      font-family: inherit;
    }

    ::selection {
      background: rgba(245, 69, 30, 0.3);
      color: #fff;
    }

    a:focus-visible,
    button:focus-visible,
    .btn:focus-visible,
    .nav-link:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
      box-shadow: none;
    }

    .container {
      max-width: 1280px;
    }

    /* ========== Bootstrap 覆写 ========== */
    .btn {
      --bs-btn-border-radius: var(--radius-btn);
      --bs-btn-padding-x: 24px;
      --bs-btn-padding-y: 12px;
      font-weight: 600;
      font-size: 15px;
      font-family: var(--font-cn);
      transition: all var(--transition);
    }

    .btn-brand {
      --bs-btn-bg: var(--primary);
      --bs-btn-border-color: var(--primary);
      --bs-btn-color: #fff;
      --bs-btn-hover-bg: var(--primary-hover);
      --bs-btn-hover-border-color: var(--primary-hover);
      --bs-btn-hover-color: #fff;
      --bs-btn-active-bg: var(--primary-hover);
      --bs-btn-active-border-color: var(--primary-hover);
      --bs-btn-focus-shadow-rgb: 245, 69, 30;
    }

    .btn-brand:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 0 3px var(--primary-glow);
    }

    .btn-ghost {
      --bs-btn-color: #fff;
      --bs-btn-border-color: rgba(255, 255, 255, 0.6);
      --bs-btn-hover-color: var(--accent);
      --bs-btn-hover-border-color: var(--accent);
      --bs-btn-hover-bg: transparent;
      --bs-btn-active-color: var(--accent);
      --bs-btn-active-border-color: var(--accent);
      background: transparent;
    }

    .btn-ghost:hover {
      transform: translateY(-2px);
    }

    .btn i {
      margin-right: 8px;
    }

    /* ========== Header / Nav ========== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1000;
      background: rgba(11, 14, 20, 0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      transition: box-shadow var(--transition), background var(--transition);
    }

    .site-header.scrolled {
      background: rgba(9, 12, 17, 0.95);
      box-shadow: 0 1px 0 var(--border);
    }

    .header-inner {
      position: relative;
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: var(--header-height);
    }

    .nav-left,
    .nav-right {
      display: flex;
      align-items: center;
      gap: 4px;
    }

    .nav-right {
      justify-content: flex-end;
    }

    .nav-link {
      display: inline-flex;
      align-items: center;
      padding: 10px 16px;
      border-radius: 10px;
      font-size: 15px;
      font-weight: 600;
      color: var(--text-muted);
      position: relative;
      transition: color var(--transition), background var(--transition);
    }

    .nav-link:hover {
      color: var(--text-main);
      background: rgba(255, 255, 255, 0.04);
    }

    .nav-link.active {
      color: var(--text-main);
    }

    .nav-link.active::after {
      content: '';
      position: absolute;
      left: 16px;
      right: 16px;
      bottom: 4px;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
    }

    .logo {
      position: absolute;
      left: 50%;
      transform: translateX(-50%);
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 22px;
      font-weight: 900;
      letter-spacing: 0.02em;
      color: var(--text-main);
      white-space: nowrap;
      z-index: 1100;
    }

    .logo:hover {
      color: var(--text-main);
    }

    .logo-mark {
      width: 32px;
      height: 32px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: var(--primary);
      border-radius: 8px;
      color: #fff;
      font-size: 15px;
      box-shadow: 0 4px 14px rgba(245, 69, 30, 0.4);
    }

    .logo-text {
      color: var(--primary);
    }

    .header-cta {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 8px 20px;
      background: var(--primary);
      color: #fff;
      border-radius: var(--radius-btn);
      font-size: 14px;
      font-weight: 600;
      border: none;
      transition: all var(--transition);
      margin-left: 16px;
    }

    .header-cta:hover {
      background: var(--primary-hover);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 0 0 3px var(--primary-glow);
    }

    .mobile-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border: 1px solid var(--border);
      background: transparent;
      border-radius: 10px;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 5px;
      cursor: pointer;
      transition: border-color var(--transition);
    }

    .mobile-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      background: var(--text-main);
      border-radius: 2px;
      transition: all var(--transition);
    }

    .mobile-toggle:hover {
      border-color: var(--accent);
    }

    .mobile-toggle:hover span {
      background: var(--accent);
    }

    .mobile-menu {
      background: var(--bg-card);
      border-top: 1px solid var(--border);
      padding: 16px 24px;
    }

    .mobile-menu a {
      display: block;
      padding: 14px 0;
      border-bottom: 1px solid var(--border);
      color: var(--text-muted);
      font-weight: 600;
      font-size: 16px;
      transition: color var(--transition);
    }

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

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

    .mobile-menu a.active {
      color: var(--primary-hover);
    }

    /* ========== Page Banner ========== */
    .page-banner {
      position: relative;
      min-height: 44vh;
      display: flex;
      align-items: flex-end;
      padding: 72px 0 56px;
      background-size: cover;
      background-position: center;
      overflow: hidden;
    }

    .page-banner::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(11, 14, 20, 0.9) 0%, rgba(11, 14, 20, 0.68) 50%, rgba(11, 14, 20, 0.35) 100%);
    }

    .page-banner::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(11, 14, 20, 0.6) 0%, transparent 40%);
    }

    .page-banner .container {
      position: relative;
      z-index: 2;
    }

    .breadcrumb-custom {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 6px;
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 20px;
    }

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

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

    .breadcrumb-sep {
      color: var(--text-dim);
      margin: 0 2px;
    }

    .breadcrumb-current {
      color: var(--text-main);
      font-weight: 600;
      max-width: 360px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .page-title {
      font-size: 42px;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 16px;
      max-width: 900px;
      display: -webkit-box;
      -webkit-line-clamp: 3;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .article-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 18px;
      align-items: center;
      color: var(--text-muted);
      font-size: 14px;
      margin-top: 8px;
    }

    .article-meta i {
      color: var(--accent);
      margin-right: 6px;
    }

    .meta-cat {
      display: inline-block;
      padding: 4px 14px;
      background: rgba(245, 69, 30, 0.12);
      color: var(--primary-hover);
      border-radius: var(--radius-pill);
      font-size: 12px;
      font-weight: 600;
    }

    /* ========== Article ========== */
    .article-main {
      padding: 64px 0 88px;
    }

    .article-wrap {
      max-width: 820px;
      margin: 0 auto;
    }

    .article-body {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 48px 56px;
      line-height: 1.9;
      font-size: 16px;
      color: var(--text-main);
    }

    .article-body h2 {
      font-size: 28px;
      font-weight: 700;
      margin: 32px 0 16px;
      color: var(--text-main);
    }

    .article-body h3 {
      font-size: 22px;
      font-weight: 700;
      margin: 28px 0 14px;
      color: var(--text-main);
    }

    .article-body p {
      margin-bottom: 1.2em;
      color: var(--text-main);
    }

    .article-body img {
      border-radius: var(--radius-img);
      margin: 24px 0;
      width: 100%;
      height: auto;
    }

    .article-body figure {
      margin: 24px 0;
    }

    .article-body figcaption {
      text-align: center;
      color: var(--text-dim);
      font-size: 13px;
      margin-top: 8px;
    }

    .article-body blockquote {
      border-left: 3px solid var(--primary);
      padding: 16px 24px;
      background: rgba(245, 69, 30, 0.06);
      border-radius: 0 12px 12px 0;
      margin: 24px 0;
      color: var(--text-muted);
    }

    .article-body table {
      width: 100%;
      min-width: 520px;
      border-collapse: collapse;
      margin: 24px 0;
    }

    .article-body th,
    .article-body td {
      border-bottom: 1px solid var(--border);
      padding: 12px 16px;
      text-align: left;
    }

    .article-body th {
      background: var(--bg-section);
      color: var(--text-main);
      font-weight: 600;
    }

    .article-body code,
    .article-body pre {
      background: var(--bg-section);
      color: var(--accent);
      border-radius: 8px;
      font-family: 'SFMono-Regular', Consolas, monospace;
    }

    .article-body pre {
      padding: 20px;
      overflow-x: auto;
      margin-bottom: 1.2em;
    }

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

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

    .article-tags-box {
      display: flex;
      gap: 12px;
      margin-top: 40px;
      padding-top: 24px;
      border-top: 1px solid var(--border);
    }

    .card-tag {
      display: inline-block;
      padding: 5px 14px;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid var(--border);
      border-radius: var(--radius-pill);
      font-size: 12px;
      font-weight: 600;
      color: var(--text-muted);
    }

    /* ========== Not Found ========== */
    .not-found {
      text-align: center;
      padding: 56px 24px;
    }

    .not-found i {
      font-size: 44px;
      color: var(--text-dim);
      margin-bottom: 16px;
      display: block;
    }

    .not-found h2 {
      font-size: 28px;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .not-found p {
      color: var(--text-muted);
      margin-bottom: 24px;
    }

    /* ========== Section Head ========== */
    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      margin-bottom: 32px;
      gap: 16px;
    }

    .section-head h2 {
      font-size: 28px;
      font-weight: 700;
      position: relative;
      padding-bottom: 12px;
    }

    .section-head h2::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 0;
      width: 40px;
      height: 3px;
      background: var(--primary);
      border-radius: 3px;
    }

    .section-more {
      color: var(--text-muted);
      font-size: 14px;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      white-space: nowrap;
      transition: color var(--transition);
    }

    .section-more:hover {
      color: var(--accent);
    }

    .section-more i {
      transition: transform var(--transition);
    }

    .section-more:hover i {
      transform: translateX(4px);
    }

    /* ========== Related ========== */
    .related-section {
      padding: 88px 0;
      background: var(--bg-section);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }

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

    .related-card {
      display: block;
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
      color: inherit;
    }

    .related-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-card-hover);
      border-color: rgba(245, 69, 30, 0.3);
      color: inherit;
    }

    .related-cover {
      position: relative;
      aspect-ratio: 16 / 10;
      overflow: hidden;
    }

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

    .related-card:hover .related-cover img {
      transform: scale(1.05);
    }

    .related-tag {
      position: absolute;
      top: 12px;
      left: 12px;
      padding: 4px 12px;
      border-radius: var(--radius-pill);
      font-size: 12px;
      font-weight: 600;
      z-index: 2;
    }

    .tag-hot {
      background: rgba(245, 69, 30, 0.92);
      color: #fff;
    }

    .tag-new {
      background: rgba(0, 224, 198, 0.92);
      color: #0B0E14;
    }

    .tag-ex {
      background: rgba(255, 255, 255, 0.14);
      color: #fff;
      border: 1px solid rgba(255, 255, 255, 0.25);
    }

    .related-body {
      padding: 20px 24px 24px;
    }

    .related-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
      line-height: 1.4;
    }

    .related-body p {
      color: var(--text-muted);
      font-size: 14px;
      margin-bottom: 16px;
      line-height: 1.7;
    }

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

    .related-link i {
      transition: transform var(--transition);
    }

    .related-card:hover .related-link i {
      transform: translateX(4px);
    }

    .article-actions {
      display: flex;
      gap: 16px;
      justify-content: center;
      margin-top: 48px;
      flex-wrap: wrap;
    }

    /* ========== Latest ========== */
    .latest-section {
      padding: 88px 0;
    }

    .latest-list {
      display: grid;
      gap: 20px;
    }

    .latest-item {
      display: flex;
      gap: 20px;
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 16px;
      transition: all var(--transition);
      color: inherit;
    }

    .latest-item:hover {
      border-color: rgba(0, 224, 198, 0.25);
      transform: translateX(4px);
      box-shadow: var(--shadow-card);
      color: inherit;
    }

    .latest-thumb {
      width: 180px;
      height: 120px;
      border-radius: var(--radius-img);
      overflow: hidden;
      flex-shrink: 0;
    }

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

    .latest-item:hover .latest-thumb img {
      transform: scale(1.05);
    }

    .latest-info {
      flex: 1;
      display: flex;
      flex-direction: column;
      min-width: 0;
    }

    .latest-cat {
      display: inline-block;
      width: fit-content;
      padding: 3px 12px;
      background: rgba(0, 224, 198, 0.1);
      color: var(--accent);
      border-radius: var(--radius-pill);
      font-size: 12px;
      font-weight: 600;
      margin-bottom: 8px;
    }

    .latest-title {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 6px;
      line-height: 1.4;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .latest-summary {
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.6;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
      margin-bottom: 8px;
    }

    .latest-bottom {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-top: auto;
      gap: 12px;
    }

    .latest-time {
      color: var(--accent);
      font-size: 13px;
    }

    .latest-time i {
      margin-right: 4px;
    }

    .latest-more {
      color: var(--text-muted);
      font-size: 14px;
      font-weight: 600;
      white-space: nowrap;
    }

    .latest-more i {
      transition: transform var(--transition);
    }

    .latest-item:hover .latest-more {
      color: var(--accent);
    }

    .latest-item:hover .latest-more i {
      transform: translateX(4px);
    }

    .empty-state {
      padding: 48px 24px;
      text-align: center;
      color: var(--text-dim);
      background: var(--bg-card);
      border: 1px dashed var(--border-strong);
      border-radius: var(--radius-card);
    }

    .empty-state i {
      font-size: 34px;
      margin-bottom: 12px;
      display: block;
    }

    .empty-state p {
      margin-bottom: 8px;
    }

    /* ========== CTA ========== */
    .cta-section {
      padding: 88px 0;
      background-size: cover;
      background-position: center;
      position: relative;
      overflow: hidden;
    }

    .cta-section::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(120deg, rgba(11, 14, 20, 0.92) 0%, rgba(245, 69, 30, 0.28) 100%);
    }

    .cta-inner {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 640px;
      margin: 0 auto;
      padding: 0 20px;
    }

    .cta-inner h2 {
      font-size: 32px;
      font-weight: 900;
      margin-bottom: 12px;
      line-height: 1.3;
    }

    .cta-inner p {
      color: var(--text-muted);
      margin-bottom: 28px;
      font-size: 16px;
    }

    /* ========== Footer ========== */
    .site-footer {
      background: var(--bg-footer);
      border-top: 1px solid var(--border);
      padding: 60px 0 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 48px;
      padding-bottom: 48px;
    }

    .footer-logo {
      font-size: 22px;
      font-weight: 900;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .footer-logo .logo-text {
      color: var(--primary);
    }

    .footer-brand p {
      color: var(--text-muted);
      font-size: 14px;
      max-width: 360px;
      line-height: 1.8;
    }

    .footer-title {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-main);
    }

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

    .footer-links a {
      color: var(--text-muted);
      font-size: 14px;
      transition: color var(--transition);
    }

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

    .social-icons {
      display: flex;
      gap: 12px;
    }

    .social-icons a {
      width: 40px;
      height: 40px;
      display: flex;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--border);
      border-radius: 10px;
      color: var(--text-muted);
      font-size: 16px;
      transition: all var(--transition);
    }

    .social-icons a:hover {
      color: var(--accent);
      border-color: var(--accent);
      transform: translateY(-3px);
    }

    .footer-bottom {
      border-top: 1px solid var(--border);
      padding: 20px 0;
      text-align: center;
      color: var(--text-dim);
      font-size: 13px;
    }

    /* ========== 响应式 ========== */
    @media (max-width: 1199.98px) {
      .page-title {
        font-size: 36px;
      }

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

    @media (max-width: 991.98px) {
      .nav-left,
      .nav-right,
      .header-cta {
        display: none;
      }

      .mobile-toggle {
        display: flex;
      }

      .header-inner::after {
        content: '';
        display: block;
        width: 44px;
        height: 44px;
      }

      .logo {
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
      }

      .page-banner {
        min-height: 38vh;
        padding: 56px 0 44px;
      }

      .page-title {
        font-size: 30px;
      }

      .article-body {
        padding: 32px 28px;
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }
    }

    @media (max-width: 767.98px) {
      body {
        font-size: 15px;
      }

      .page-banner {
        min-height: 34vh;
      }

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

      .article-meta {
        gap: 12px;
        font-size: 13px;
      }

      .article-main {
        padding: 40px 0 64px;
      }

      .article-body {
        padding: 24px 20px;
        line-height: 1.85;
      }

      .article-body h2 {
        font-size: 23px;
      }

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

      .related-section,
      .latest-section,
      .cta-section {
        padding: 56px 0;
      }

      .related-grid {
        grid-template-columns: 1fr;
        gap: 20px;
      }

      .latest-item {
        flex-direction: column;
      }

      .latest-thumb {
        width: 100%;
        height: auto;
        aspect-ratio: 16 / 10;
      }

      .latest-title {
        white-space: normal;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
      }

      .section-head {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
      }

      .section-head h2 {
        font-size: 24px;
      }

      .cta-inner h2 {
        font-size: 26px;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }

      .article-actions {
        flex-direction: column;
        align-items: center;
      }

      .article-actions .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
      }
    }

    @media (max-width: 575.98px) {
      .breadcrumb-current {
        max-width: 220px;
      }

      .article-actions .btn {
        max-width: 100%;
      }
    }

/* roulang page: category2 */
:root {
      --bg: #0B0E14;
      --bg-alt: #12161F;
      --card-bg: #171C26;
      --primary: #F5451E;
      --primary-hover: #FF6B3D;
      --accent: #00E0C6;
      --accent-hover: #37F5D8;
      --text: #E8ECF1;
      --text-secondary: #A0A8B5;
      --text-muted: #5C6470;
      --border: rgba(255,255,255,0.08);
      --radius-card: 16px;
      --radius-img: 12px;
      --radius-btn: 10px;
      --shadow-card: 0 8px 24px rgba(0,0,0,0.35);
      --shadow-card-hover: 0 12px 40px rgba(0,0,0,0.5);
      --transition: 0.3s ease;
      --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
      --font-num: "Rajdhani", "Teko", "Orbitron", sans-serif;
    }

    *,
    *::before,
    *::after {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      background: var(--bg);
      color: var(--text);
      font-family: var(--font-cn);
      font-size: 16px;
      line-height: 1.8;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

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

    .container {
      max-width: 1280px;
      padding-left: 16px;
      padding-right: 16px;
    }

    .section {
      padding: 88px 0;
    }

    @media (max-width: 991px) {
      .section {
        padding: 64px 0;
      }
    }

    @media (max-width: 767px) {
      .section {
        padding: 48px 0;
      }
    }

    /* ============ 导航 ============ */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1050;
      background: rgba(11, 14, 20, 0.85);
      -webkit-backdrop-filter: blur(12px);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid transparent;
      transition: border-color var(--transition);
    }

    .site-header.scrolled {
      border-bottom-color: var(--border);
    }

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

    .nav-left-wrap,
    .nav-right-wrap {
      display: flex;
      align-items: center;
      flex: 1;
    }

    .nav-right-wrap {
      justify-content: flex-end;
    }

    .nav-left {
      display: flex;
      align-items: center;
      gap: 28px;
    }

    .nav-right {
      display: flex;
      align-items: center;
      gap: 28px;
    }

    .nav-link {
      position: relative;
      font-size: 15px;
      font-weight: 600;
      color: var(--text-secondary);
      padding: 6px 2px;
      letter-spacing: 0.02em;
      transition: color var(--transition);
    }

    .nav-link:hover {
      color: var(--text);
    }

    .nav-link.active {
      color: var(--text);
    }

    .nav-link.active::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: -2px;
      width: 100%;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
    }

    .logo-center {
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%, -50%);
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 20px;
      font-weight: 900;
      letter-spacing: 0.02em;
      color: var(--text);
      white-space: nowrap;
      z-index: 1;
    }

    .logo-center .logo-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 34px;
      height: 34px;
      background: var(--primary);
      color: #fff;
      border-radius: 8px;
      font-size: 16px;
      font-weight: 900;
      transform: rotate(-6deg);
      box-shadow: 0 4px 14px rgba(245, 69, 30, 0.4);
    }

    .logo-center .logo-text {
      font-size: 19px;
      letter-spacing: 0.04em;
    }

    .logo-center .logo-text span {
      color: var(--primary);
    }

    .nav-toggle {
      display: none;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      gap: 5px;
      width: 42px;
      height: 42px;
      padding: 0;
      border: 1px solid var(--border);
      border-radius: 10px;
      background: var(--card-bg);
      cursor: pointer;
      transition: border-color var(--transition);
    }

    .nav-toggle .bar {
      display: block;
      width: 18px;
      height: 2px;
      border-radius: 2px;
      background: var(--text);
      transition: transform var(--transition), opacity var(--transition);
    }

    .nav-toggle:hover {
      border-color: var(--accent);
    }

    .nav-toggle:focus {
      outline: none;
      box-shadow: 0 0 0 2px var(--accent);
    }

    .mobile-menu {
      display: none;
      position: fixed;
      top: 72px;
      left: 0;
      right: 0;
      z-index: 1040;
      background: rgba(11, 14, 20, 0.97);
      -webkit-backdrop-filter: blur(18px);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--border);
      padding: 12px 16px 24px;
    }

    .mobile-menu.open {
      display: block;
      animation: menuFade 0.25s ease;
    }

    @keyframes menuFade {
      from {
        opacity: 0;
        transform: translateY(-8px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    .mobile-link {
      display: block;
      padding: 14px 8px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-secondary);
      border-bottom: 1px solid var(--border);
    }

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

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

    .mobile-link.active {
      color: var(--text);
      font-weight: 700;
    }

    @media (max-width: 991px) {
      .nav-left,
      .nav-right {
        display: none;
      }

      .nav-toggle {
        display: inline-flex;
      }

      .logo-center {
        position: static;
        transform: none;
        margin: 0 auto;
      }

      .nav-container {
        justify-content: space-between;
      }

      .nav-left-wrap {
        flex: none;
      }

      .nav-right-wrap {
        flex: none;
      }
    }

    /* ============ 页面横幅 ============ */
    .page-banner {
      position: relative;
      min-height: 50vh;
      display: flex;
      align-items: center;
      padding: 72px 0 60px;
      background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
      overflow: hidden;
    }

    .page-banner::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(11, 14, 20, 0.94) 0%, rgba(11, 14, 20, 0.72) 45%, rgba(11, 14, 20, 0.35) 100%);
    }

    .page-banner::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(11, 14, 20, 0.2) 0%, transparent 50%, rgba(11, 14, 20, 0.65) 100%);
    }

    .page-banner .container {
      position: relative;
      z-index: 1;
    }

    .breadcrumb-nav {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 20px;
      font-size: 13px;
      color: var(--text-secondary);
    }

    .breadcrumb-nav a {
      color: var(--text-secondary);
    }

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

    .breadcrumb-nav .divider {
      color: var(--text-muted);
    }

    .breadcrumb-nav .current {
      color: var(--text);
      font-weight: 600;
    }

    .banner-stamp {
      display: inline-block;
      padding: 5px 16px;
      border: 2px solid var(--primary);
      border-radius: 6px;
      color: var(--primary);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 0.14em;
      margin-bottom: 18px;
      transform: rotate(-3deg);
      background: rgba(245, 69, 30, 0.08);
      transition: transform var(--transition);
    }

    .banner-stamp:hover {
      transform: rotate(0deg) scale(1.03);
    }

    .banner-title {
      font-size: 52px;
      font-weight: 900;
      line-height: 1.12;
      letter-spacing: -0.02em;
      margin-bottom: 16px;
      color: var(--text);
    }

    .banner-subtitle {
      font-size: 17px;
      line-height: 1.8;
      color: var(--text-secondary);
      max-width: 560px;
      margin-bottom: 0;
    }

    @media (max-width: 992px) {
      .page-banner {
        min-height: 44vh;
        padding: 56px 0 44px;
      }

      .banner-title {
        font-size: 38px;
      }
    }

    @media (max-width: 768px) {
      .page-banner {
        min-height: 40vh;
        padding: 48px 0 36px;
      }

      .banner-title {
        font-size: 30px;
      }

      .banner-subtitle {
        font-size: 15px;
      }
    }

    /* ============ 区块标题 ============ */
    .section-head {
      margin-bottom: 44px;
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
    }

    .section-title {
      font-size: 30px;
      font-weight: 700;
      line-height: 1.3;
      letter-spacing: -0.01em;
      margin: 0;
      position: relative;
    }

    .section-title::before {
      content: "";
      display: inline-block;
      width: 4px;
      height: 24px;
      background: var(--primary);
      border-radius: 2px;
      margin-right: 14px;
      vertical-align: -3px;
    }

    .section-desc {
      font-size: 15px;
      color: var(--text-secondary);
      margin: 10px 0 0 18px;
      line-height: 1.7;
    }

    .section-label {
      display: block;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 8px;
    }

    @media (max-width: 767px) {
      .section-title {
        font-size: 24px;
      }

      .section-head {
        margin-bottom: 32px;
      }
    }

    /* ============ 内容卡片网格 ============ */
    .card-section {
      background: var(--bg);
    }

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

    @media (max-width: 991px) {
      .card-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 767px) {
      .card-grid {
        grid-template-columns: 1fr;
        gap: 20px;
      }
    }

    .category-card {
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }

    .category-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-card-hover), 0 0 0 1px rgba(245, 69, 30, 0.12);
      border-color: rgba(245, 69, 30, 0.2);
    }

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

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

    .category-card:hover .card-img-wrap img {
      transform: scale(1.05);
    }

    .card-badge {
      position: absolute;
      top: 12px;
      left: 12px;
      z-index: 2;
      display: inline-block;
      padding: 4px 14px;
      border-radius: 999px;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.06em;
      background: rgba(245, 69, 30, 0.9);
      color: #fff;
      -webkit-backdrop-filter: blur(6px);
      backdrop-filter: blur(6px);
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
    }

    .card-badge.badge-cool {
      background: rgba(0, 224, 198, 0.9);
      color: #081018;
    }

    .card-body {
      padding: 20px 22px 22px;
    }

    .card-title {
      font-size: 19px;
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 10px;
      color: var(--text);
    }

    .card-text {
      font-size: 14px;
      line-height: 1.7;
      color: var(--text-secondary);
      margin-bottom: 16px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .card-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      font-size: 12px;
      color: var(--text-muted);
      border-top: 1px solid var(--border);
      padding-top: 14px;
    }

    .card-time {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .card-time i {
      color: var(--accent);
      font-size: 13px;
    }

    .card-type {
      color: var(--text-secondary);
      font-weight: 600;
      letter-spacing: 0.04em;
    }

    /* ============ 分类介绍图文区 ============ */
    .intro-block-section {
      background: var(--bg-alt);
      position: relative;
      overflow: hidden;
    }

    .intro-block-section::before {
      content: "";
      position: absolute;
      top: -80px;
      right: -80px;
      width: 240px;
      height: 240px;
      border-radius: 50%;
      background: rgba(245, 69, 30, 0.08);
      filter: blur(80px);
      pointer-events: none;
    }

    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }

    @media (max-width: 992px) {
      .intro-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
    }

    .intro-media {
      position: relative;
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-card);
    }

    .intro-media img {
      width: 100%;
      aspect-ratio: 4 / 3;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .intro-media:hover img {
      transform: scale(1.02);
    }

    .intro-media::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 55%, rgba(11, 14, 20, 0.5));
      pointer-events: none;
    }

    .intro-overline {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 0.12em;
      color: var(--accent);
      text-transform: uppercase;
      margin-bottom: 12px;
    }

    .intro-title {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 20px;
      color: var(--text);
    }

    .intro-text {
      font-size: 15px;
      line-height: 1.8;
      color: var(--text-secondary);
      margin-bottom: 16px;
    }

    .intro-list {
      list-style: none;
      margin: 24px 0 0;
      padding: 0;
      display: flex;
      flex-wrap: wrap;
      gap: 14px 28px;
    }

    .intro-list li {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text);
    }

    .intro-list li i {
      color: var(--accent);
      font-size: 14px;
    }

    @media (max-width: 992px) {
      .intro-title {
        font-size: 26px;
      }
    }

    /* ============ 横滑推荐区 ============ */
    .scroll-section {
      background: var(--bg);
    }

    .scroll-x {
      overflow-x: auto;
      scroll-snap-type: x mandatory;
      scrollbar-width: none;
      -ms-overflow-style: none;
      cursor: grab;
      scroll-behavior: smooth;
    }

    .scroll-x::-webkit-scrollbar {
      display: none;
    }

    .scroll-x:active {
      cursor: grabbing;
    }

    .scroll-track {
      display: flex;
      gap: 20px;
      padding: 8px 4px 20px;
    }

    .scroll-card {
      flex: 0 0 280px;
      scroll-snap-align: start;
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      overflow: hidden;
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }

    .scroll-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-card-hover);
      border-color: rgba(0, 224, 198, 0.18);
    }

    .scroll-card .card-img-wrap {
      aspect-ratio: 16 / 10;
    }

    .scroll-card .card-body {
      padding: 16px 18px 18px;
    }

    .scroll-card .card-title {
      font-size: 17px;
      margin-bottom: 6px;
    }

    .scroll-card .card-text {
      font-size: 13px;
      margin-bottom: 10px;
    }

    .scroll-actions {
      display: flex;
      gap: 8px;
    }

    .scroll-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 40px;
      height: 40px;
      border-radius: 10px;
      border: 1px solid var(--border);
      background: var(--card-bg);
      color: var(--text);
      cursor: pointer;
      transition: all var(--transition);
    }

    .scroll-btn:hover {
      border-color: var(--accent);
      color: var(--accent);
      box-shadow: 0 0 0 3px rgba(0, 224, 198, 0.12);
    }

    .scroll-btn:focus {
      outline: none;
      box-shadow: 0 0 0 2px var(--accent);
    }

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

      .scroll-card {
        flex-basis: 260px;
      }
    }

    /* ============ FAQ ============ */
    .faq-section {
      background: var(--bg-alt);
    }

    .custom-accordion {
      max-width: 840px;
      margin: 0 auto;
    }

    .custom-accordion .accordion-item {
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: 14px !important;
      margin-bottom: 14px;
      overflow: hidden;
      transition: border-color var(--transition), box-shadow var(--transition);
    }

    .custom-accordion .accordion-item:has(.accordion-button:not(.collapsed)) {
      border-color: rgba(245, 69, 30, 0.35);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
    }

    .custom-accordion .accordion-item:first-of-type,
    .custom-accordion .accordion-item:last-of-type {
      border-radius: 14px !important;
    }

    .custom-accordion .accordion-button {
      background: transparent;
      color: var(--text);
      font-size: 16px;
      font-weight: 600;
      padding: 20px 22px;
      border: none;
      box-shadow: none;
      position: relative;
    }

    .custom-accordion .accordion-button::after {
      background: none;
      content: "\f067";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      font-size: 14px;
      color: var(--accent);
      transition: transform var(--transition);
    }

    .custom-accordion .accordion-button:not(.collapsed)::after {
      transform: rotate(45deg);
      color: var(--primary);
    }

    .custom-accordion .accordion-button:focus {
      box-shadow: none;
      border-color: var(--accent);
    }

    .custom-accordion .accordion-button:not(.collapsed) {
      background: rgba(245, 69, 30, 0.04);
      color: var(--text);
      box-shadow: none;
    }

    .custom-accordion .accordion-button::before {
      content: "";
      position: absolute;
      left: 0;
      top: 12px;
      bottom: 12px;
      width: 3px;
      border-radius: 0 3px 3px 0;
      background: var(--primary);
      opacity: 0;
      transition: opacity var(--transition);
    }

    .custom-accordion .accordion-button:not(.collapsed)::before {
      opacity: 1;
    }

    .custom-accordion .accordion-body {
      padding: 0 22px 22px;
      color: var(--text-secondary);
      font-size: 15px;
      line-height: 1.75;
      background: var(--card-bg);
      border-top: 1px solid var(--border);
    }

    /* ============ CTA 横幅 ============ */
    .cta-banner {
      position: relative;
      padding: 96px 0;
      background: linear-gradient(135deg, rgba(245, 69, 30, 0.18), transparent 65%),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      text-align: center;
      overflow: hidden;
    }

    .cta-banner::before {
      content: "";
      position: absolute;
      inset: 0;
      background: rgba(11, 14, 20, 0.78);
    }

    .cta-banner .container {
      position: relative;
      z-index: 1;
    }

    .cta-title {
      font-size: 34px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
      color: var(--text);
    }

    .cta-desc {
      font-size: 16px;
      color: var(--text-secondary);
      max-width: 560px;
      margin: 0 auto 32px;
      line-height: 1.8;
    }

    .cta-buttons {
      display: flex;
      gap: 16px;
      justify-content: center;
      flex-wrap: wrap;
    }

    .btn-primary {
      background: var(--primary);
      border-color: var(--primary);
      color: #fff;
      font-weight: 600;
      border-radius: var(--radius-btn);
      padding: 12px 26px;
      transition: all var(--transition);
    }

    .btn-primary:hover {
      background: var(--primary-hover);
      border-color: var(--primary-hover);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 0 0 3px rgba(245, 69, 30, 0.25);
    }

    .btn-primary:focus {
      box-shadow: 0 0 0 3px var(--accent);
      outline: none;
    }

    .btn-outline-light {
      background: transparent;
      border: 1px solid rgba(255, 255, 255, 0.55);
      color: var(--text);
      font-weight: 600;
      border-radius: var(--radius-btn);
      padding: 12px 26px;
      transition: all var(--transition);
    }

    .btn-outline-light:hover {
      border-color: var(--accent);
      color: var(--accent);
      background: rgba(0, 224, 198, 0.05);
      transform: translateY(-2px);
    }

    .btn-outline-light:focus {
      box-shadow: 0 0 0 3px var(--accent);
      outline: none;
    }

    @media (max-width: 767px) {
      .cta-banner {
        padding: 64px 0;
      }

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

      .cta-buttons {
        flex-direction: column;
        align-items: center;
      }

      .cta-buttons .btn {
        min-width: 180px;
      }
    }

    /* ============ 页脚 ============ */
    .site-footer {
      background: #080B11;
      padding: 60px 0 28px;
      border-top: 1px solid var(--border);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 40px;
    }

    .footer-brand .footer-logo {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 20px;
      font-weight: 900;
      color: var(--text);
      margin-bottom: 16px;
    }

    .footer-brand .footer-logo .logo-text {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 32px;
      height: 32px;
      background: var(--primary);
      color: #fff;
      border-radius: 8px;
      font-size: 15px;
      transform: rotate(-6deg);
      box-shadow: 0 4px 14px rgba(245, 69, 30, 0.35);
    }

    .footer-brand p {
      font-size: 14px;
      line-height: 1.8;
      color: var(--text-secondary);
      max-width: 380px;
      margin-bottom: 0;
    }

    .footer-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 16px;
    }

    .footer-links ul,
    .footer-follow ul {
      list-style: none;
      margin: 0;
      padding: 0;
    }

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

    .footer-links a {
      color: var(--text-secondary);
      font-size: 14px;
      transition: color var(--transition), padding-left var(--transition);
    }

    .footer-links a:hover {
      color: var(--accent);
      padding-left: 4px;
    }

    .social-icons {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
    }

    .social-icons a {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 38px;
      height: 38px;
      border-radius: 10px;
      border: 1px solid var(--border);
      background: var(--card-bg);
      color: var(--text-secondary);
      font-size: 16px;
      transition: all var(--transition);
    }

    .social-icons a:hover {
      color: var(--accent);
      border-color: var(--accent);
      transform: translateY(-3px);
      box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
    }

    .footer-bottom {
      border-top: 1px solid var(--border);
      padding-top: 24px;
      text-align: center;
    }

    .footer-bottom p {
      font-size: 13px;
      color: var(--text-muted);
      margin: 0;
    }

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

      .footer-brand {
        grid-column: 1 / -1;
      }
    }

    @media (max-width: 767px) {
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }

      .footer-brand {
        grid-column: auto;
      }

      .site-footer {
        padding: 48px 0 24px;
      }
    }

    /* ============ 焦点态 ============ */
    a:focus-visible,
    button:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
      border-radius: 4px;
    }

    /* ============ 小屏细节 ============ */
    @media (max-width: 520px) {
      .banner-stamp {
        font-size: 12px;
        padding: 4px 12px;
      }

      .section-desc {
        font-size: 14px;
        margin-left: 0;
      }

      .card-title {
        font-size: 18px;
      }

      .card-body {
        padding: 16px 18px 18px;
      }

      .intro-list {
        flex-direction: column;
        gap: 10px;
      }

      .footer-links a {
        font-size: 15px;
      }
    }