/* roulang page: index */
:root {
      --ink: #182321;
      --ink-soft: #34423e;
      --muted: #77817c;
      --paper: #f6f7f4;
      --white: #ffffff;
      --line: #e2e7e2;
      --line-dark: rgba(255,255,255,.18);
      --brand: #e84e59;
      --brand-deep: #c93345;
      --lime: #d9f477;
      --teal: #267b70;
      --mint: #e7f3ed;
      --rose: #fff0ef;
      --shadow: 0 18px 48px rgba(24,35,33,.09);
      --shadow-soft: 0 8px 26px rgba(24,35,33,.07);
      --radius-sm: 10px;
      --radius: 18px;
      --radius-lg: 28px;
      --radius-pill: 999px;
      --container: 1220px;
      --space-section: 92px;
      color-scheme: light;
    }

    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 96px; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
      font-size: 16px;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }
    img { display: block; max-width: 100%; }
    a { color: inherit; text-decoration: none; }
    button, input { font: inherit; }
    button { color: inherit; }
    button:focus-visible, a:focus-visible, input:focus-visible, summary:focus-visible {
      outline: 3px solid rgba(232,78,89,.55);
      outline-offset: 3px;
    }
    ::selection { color: var(--ink); background: var(--lime); }
    .container { width: min(var(--container), calc(100% - 56px)); margin-inline: auto; }
    .sr-only {
      position: absolute;
      width: 1px;
      height: 1px;
      padding: 0;
      margin: -1px;
      overflow: hidden;
      clip: rect(0,0,0,0);
      white-space: nowrap;
      border: 0;
    }
    .skip-link {
      position: fixed;
      z-index: 100;
      top: 12px;
      left: 12px;
      padding: 10px 16px;
      color: var(--white);
      background: var(--ink);
      border-radius: var(--radius-sm);
      transform: translateY(-150%);
    }
    .skip-link:focus { transform: translateY(0); }

    .site-header {
      position: sticky;
      z-index: 50;
      top: 0;
      background: rgba(246,247,244,.94);
      border-bottom: 1px solid rgba(24,35,33,.08);
      backdrop-filter: blur(18px);
    }
    .nav-shell {
      min-height: 78px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 28px;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
      font-size: 16px;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: 0;
    }
    .brand-mark {
      display: grid;
      flex: 0 0 42px;
      width: 42px;
      height: 42px;
      place-items: center;
      color: var(--white);
      background: linear-gradient(140deg, var(--brand), #f17c61 58%, #f3b45d);
      border-radius: 13px;
      box-shadow: 0 7px 16px rgba(232,78,89,.2);
      font-size: 20px;
      font-weight: 900;
    }
    .brand-name { max-width: 250px; }
    .main-nav {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 5px;
    }
    .nav-link {
      display: inline-flex;
      align-items: center;
      min-height: 42px;
      padding: 0 13px;
      color: var(--ink-soft);
      border-radius: var(--radius-pill);
      font-size: 14px;
      font-weight: 650;
      transition: color .2s ease, background .2s ease, transform .2s ease;
    }
    .nav-link:hover, .nav-link:focus-visible {
      color: var(--brand-deep);
      background: var(--rose);
    }
    .nav-link[aria-current="page"] {
      color: var(--brand-deep);
      background: #fde7e5;
    }
    .nav-toggle {
      display: none;
      width: 44px;
      height: 44px;
      padding: 0;
      place-items: center;
      border: 1px solid var(--line);
      border-radius: 13px;
      background: var(--white);
      cursor: pointer;
    }
    .nav-toggle span, .nav-toggle::before, .nav-toggle::after {
      display: block;
      width: 18px;
      height: 2px;
      background: var(--ink);
      border-radius: 2px;
      content: "";
      transition: transform .2s ease, opacity .2s ease;
    }
    .nav-toggle span { margin: 4px 0; }
    .nav-toggle[aria-expanded="true"] span { opacity: 0; }
    .nav-toggle[aria-expanded="true"]::before { transform: translateY(6px) rotate(45deg); }
    .nav-toggle[aria-expanded="true"]::after { transform: translateY(-6px) rotate(-45deg); }

    .hero {
      position: relative;
      display: flex;
      min-height: 650px;
      align-items: flex-end;
      overflow: hidden;
      color: var(--white);
      background: #182321;
      isolation: isolate;
    }
    .hero-media, .hero-shade {
      position: absolute;
      z-index: -1;
      inset: 0;
    }
    .hero-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: center 54%;
      opacity: .78;
    }
    .hero-shade {
      background:
        linear-gradient(90deg, rgba(14,23,22,.91) 0%, rgba(14,23,22,.64) 48%, rgba(14,23,22,.12) 100%),
        linear-gradient(0deg, rgba(14,23,22,.88) 0%, rgba(14,23,22,.04) 75%);
    }
    .hero-inner {
      position: relative;
      width: 100%;
      padding-top: 95px;
      padding-bottom: 66px;
    }
    .series-nav {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      width: fit-content;
      max-width: 100%;
      margin-bottom: 52px;
      padding: 8px;
      background: rgba(255,255,255,.13);
      border: 1px solid rgba(255,255,255,.2);
      border-radius: var(--radius-pill);
      backdrop-filter: blur(12px);
      transform: skewX(-8deg);
    }
    .series-nav a {
      display: inline-flex;
      align-items: center;
      min-height: 34px;
      padding: 0 16px;
      color: rgba(255,255,255,.84);
      border-radius: var(--radius-pill);
      font-size: 13px;
      font-weight: 700;
      transform: skewX(8deg);
      transition: color .2s ease, background .2s ease;
    }
    .series-nav a:hover, .series-nav a:focus-visible {
      color: var(--ink);
      background: var(--lime);
    }
    .hero-kicker {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      margin: 0 0 14px;
      color: var(--lime);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: 0;
    }
    .hero-kicker::before {
      width: 24px;
      height: 2px;
      background: var(--lime);
      content: "";
    }
    .hero h1 {
      max-width: 900px;
      margin: 0;
      font-size: 62px;
      font-weight: 900;
      line-height: 1.13;
      letter-spacing: 0;
    }
    .hero h1 .highlight {
      color: var(--lime);
      text-shadow: 0 5px 24px rgba(217,244,119,.12);
    }
    .hero-subtitle {
      max-width: 760px;
      margin: 17px 0 0;
      color: rgba(255,255,255,.91);
      font-size: 21px;
      font-weight: 650;
      line-height: 1.55;
    }
    .hero-copy {
      max-width: 780px;
      margin: 15px 0 0;
      color: rgba(255,255,255,.76);
      font-size: 15px;
      line-height: 1.95;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 28px;
    }
    .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      min-height: 50px;
      padding: 0 22px;
      border: 1px solid transparent;
      border-radius: var(--radius-pill);
      font-size: 14px;
      font-weight: 800;
      line-height: 1.3;
      cursor: pointer;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease, border-color .2s ease;
    }
    .button:hover { transform: translateY(-2px); }
    .button-primary {
      color: var(--ink);
      background: var(--lime);
      box-shadow: 0 10px 24px rgba(217,244,119,.2);
    }
    .button-primary:hover { background: #e5ff91; box-shadow: 0 14px 28px rgba(217,244,119,.28); }
    .button-secondary {
      color: var(--white);
      background: rgba(255,255,255,.08);
      border-color: rgba(255,255,255,.36);
    }
    .button-secondary:hover { background: rgba(255,255,255,.16); border-color: rgba(255,255,255,.64); }
    .button-coral {
      color: var(--white);
      background: var(--brand);
      box-shadow: 0 10px 22px rgba(232,78,89,.2);
    }
    .button-coral:hover { background: var(--brand-deep); }
    .button-light {
      color: var(--ink);
      background: var(--white);
      border-color: var(--line);
    }
    .button-light:hover { border-color: #cbd4cd; box-shadow: var(--shadow-soft); }
    .button-arrow { font-size: 18px; line-height: 1; }
    .hero-foot {
      display: flex;
      flex-wrap: wrap;
      gap: 10px 22px;
      margin-top: 34px;
      color: rgba(255,255,255,.76);
      font-size: 13px;
      font-weight: 650;
    }
    .hero-foot span { display: inline-flex; align-items: center; gap: 8px; }
    .hero-foot span::before {
      width: 7px;
      height: 7px;
      background: var(--lime);
      border-radius: 50%;
      content: "";
    }

    main { overflow: clip; }
    .section { padding: var(--space-section) 0; }
    .section-tight { padding: 60px 0; }
    .section-white { background: var(--white); }
    .section-dark { color: var(--white); background: #1b2926; }
    .section-tint { background: #edf3ee; }
    .section-rose { background: #fff0ed; }
    .section-heading {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 28px;
      margin-bottom: 34px;
    }
    .section-heading-main { max-width: 760px; }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      margin: 0 0 10px;
      color: var(--brand-deep);
      font-size: 12px;
      font-weight: 850;
    }
    .eyebrow::before {
      width: 20px;
      height: 2px;
      background: currentColor;
      content: "";
    }
    .section-dark .eyebrow { color: var(--lime); }
    .section-heading h2 {
      margin: 0;
      font-size: 35px;
      font-weight: 850;
      line-height: 1.3;
      letter-spacing: 0;
    }
    .section-heading p {
      max-width: 760px;
      margin: 12px 0 0;
      color: var(--muted);
      font-size: 15px;
      line-height: 1.9;
    }
    .section-dark .section-heading p { color: rgba(255,255,255,.68); }
    .section-link {
      display: inline-flex;
      flex: 0 0 auto;
      align-items: center;
      gap: 8px;
      padding: 8px 0;
      color: var(--brand-deep);
      font-size: 14px;
      font-weight: 800;
      transition: gap .2s ease;
    }
    .section-link:hover { gap: 13px; }
    .section-link span { font-size: 18px; }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 1px;
      overflow: hidden;
      background: var(--line);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow-soft);
    }
    .stat-item {
      min-height: 142px;
      padding: 26px 28px;
      background: var(--white);
    }
    .stat-value {
      display: block;
      color: var(--brand-deep);
      font-size: 38px;
      font-weight: 900;
      line-height: 1.1;
    }
    .stat-label {
      display: block;
      margin-top: 9px;
      color: var(--ink-soft);
      font-size: 14px;
      font-weight: 750;
    }
    .stat-note {
      display: block;
      margin-top: 4px;
      color: var(--muted);
      font-size: 12px;
    }
    .stat-footnote {
      margin: 16px 0 0;
      color: var(--muted);
      font-size: 12px;
    }

    .service-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 15px;
    }
    .service-card {
      min-height: 208px;
      padding: 23px;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .service-card:hover {
      transform: translateY(-4px);
      border-color: #f3b7b8;
      box-shadow: var(--shadow-soft);
    }
    .service-icon {
      display: grid;
      width: 44px;
      height: 44px;
      place-items: center;
      color: var(--brand-deep);
      background: var(--rose);
      border-radius: 14px;
      font-size: 20px;
      font-weight: 850;
    }
    .service-card h3 { margin: 18px 0 7px; font-size: 17px; line-height: 1.4; }
    .service-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

    .latest-tools {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      margin: -4px 0 24px;
    }
    .filter-list { display: flex; flex-wrap: wrap; gap: 8px; }
    .filter-button {
      min-height: 38px;
      padding: 0 15px;
      color: var(--ink-soft);
      background: transparent;
      border: 1px solid var(--line);
      border-radius: var(--radius-pill);
      font-size: 13px;
      font-weight: 700;
      cursor: pointer;
      transition: color .2s ease, background .2s ease, border-color .2s ease;
    }
    .filter-button:hover { color: var(--brand-deep); border-color: #efa5a8; }
    .filter-button[aria-pressed="true"] {
      color: var(--white);
      background: var(--ink);
      border-color: var(--ink);
    }
    .search-box {
      position: relative;
      flex: 0 1 270px;
    }
    .search-box input {
      width: 100%;
      min-height: 44px;
      padding: 0 16px 0 42px;
      color: var(--ink);
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius-pill);
      outline: none;
      transition: border-color .2s ease, box-shadow .2s ease;
    }
    .search-box input::placeholder { color: #9aa39e; }
    .search-box input:focus { border-color: var(--brand); box-shadow: 0 0 0 4px rgba(232,78,89,.1); }
    .search-symbol {
      position: absolute;
      top: 50%;
      left: 15px;
      color: var(--muted);
      font-size: 17px;
      transform: translateY(-52%);
      pointer-events: none;
    }
    .video-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 25px 18px;
    }
    .video-card {
      min-width: 0;
      transition: transform .22s ease;
    }
    .video-card:hover { transform: translateY(-4px); }
    .video-poster {
      position: relative;
      overflow: hidden;
      aspect-ratio: 3 / 4;
      background: #d9dfda;
      border-radius: var(--radius);
      box-shadow: 0 5px 14px rgba(24,35,33,.07);
    }
    .video-poster img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .5s ease;
    }
    .video-card:hover .video-poster img { transform: scale(1.045); }
    .poster-shade {
      position: absolute;
      inset: 35% 0 0;
      background: linear-gradient(0deg, rgba(12,20,19,.65), transparent);
      pointer-events: none;
    }
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 5px;
      min-height: 25px;
      padding: 0 9px;
      color: var(--ink);
      background: rgba(255,255,255,.93);
      border: 1px solid rgba(255,255,255,.7);
      border-radius: var(--radius-pill);
      font-size: 11px;
      font-weight: 850;
      line-height: 1.2;
      backdrop-filter: blur(8px);
    }
    .poster-badge { position: absolute; top: 12px; left: 12px; }
    .poster-type {
      position: absolute;
      right: 12px;
      bottom: 12px;
      color: var(--white);
      font-size: 12px;
      font-weight: 700;
    }
    .video-info { padding: 13px 2px 0; }
    .video-title-row {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 8px;
    }
    .video-title {
      margin: 0;
      overflow: hidden;
      font-size: 16px;
      font-weight: 850;
      line-height: 1.45;
      text-overflow: ellipsis;
      white-space: nowrap;
    }
    .video-score {
      flex: 0 0 auto;
      color: var(--brand-deep);
      font-size: 13px;
      font-weight: 900;
    }
    .video-desc {
      display: -webkit-box;
      min-height: 44px;
      margin: 7px 0 9px;
      overflow: hidden;
      color: var(--muted);
      font-size: 12px;
      line-height: 1.8;
      -webkit-box-orient: vertical;
      -webkit-line-clamp: 2;
    }
    .video-meta { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 11px; }
    .video-meta .meta-dot { width: 3px; height: 3px; background: #aab2ad; border-radius: 50%; }
    .empty-state {
      display: none;
      grid-column: 1 / -1;
      padding: 30px;
      color: var(--muted);
      text-align: center;
      background: var(--white);
      border: 1px dashed #cbd4cd;
      border-radius: var(--radius);
    }
    .empty-state.is-visible { display: block; }

    .recommend-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
    }
    .recommend-card {
      position: relative;
      min-height: 360px;
      overflow: hidden;
      color: var(--white);
      background: #26312e;
      border-radius: var(--radius-lg);
      isolation: isolate;
    }
    .recommend-card img {
      position: absolute;
      z-index: -2;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .5s ease;
    }
    .recommend-card:hover img { transform: scale(1.05); }
    .recommend-card::after {
      position: absolute;
      z-index: -1;
      inset: 0;
      background: linear-gradient(0deg, rgba(12,20,19,.88) 0%, rgba(12,20,19,.16) 75%);
      content: "";
    }
    .recommend-content { position: absolute; right: 24px; bottom: 24px; left: 24px; }
    .recommend-kicker {
      display: inline-flex;
      min-height: 26px;
      align-items: center;
      padding: 0 10px;
      color: var(--ink);
      background: var(--lime);
      border-radius: var(--radius-pill);
      font-size: 11px;
      font-weight: 850;
    }
    .recommend-content h3 { margin: 13px 0 7px; font-size: 23px; line-height: 1.3; }
    .recommend-content p { max-width: 360px; margin: 0; color: rgba(255,255,255,.78); font-size: 13px; line-height: 1.8; }
    .recommend-meta { display: flex; gap: 12px; margin-top: 14px; color: rgba(255,255,255,.84); font-size: 12px; font-weight: 700; }

    .category-grid {
      display: grid;
      grid-template-columns: repeat(5, minmax(0, 1fr));
      gap: 13px;
    }
    .category-card {
      position: relative;
      min-height: 222px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      overflow: hidden;
      padding: 21px;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }
    .category-card::after {
      position: absolute;
      right: -30px;
      bottom: -42px;
      width: 118px;
      height: 118px;
      background: var(--category-accent, #e9f2df);
      border-radius: 50%;
      opacity: .65;
      content: "";
      transition: transform .3s ease;
    }
    .category-card:hover { transform: translateY(-4px); border-color: #d4ddd6; box-shadow: var(--shadow-soft); }
    .category-card:hover::after { transform: scale(1.16); }
    .category-icon {
      position: relative;
      z-index: 1;
      display: grid;
      width: 44px;
      height: 44px;
      place-items: center;
      color: var(--ink);
      background: var(--category-accent, #e9f2df);
      border-radius: 14px;
      font-size: 20px;
      font-weight: 850;
    }
    .category-card h3 { position: relative; z-index: 1; margin: 20px 0 7px; font-size: 17px; }
    .category-card p { position: relative; z-index: 1; margin: 0; color: var(--muted); font-size: 12px; line-height: 1.8; }
    .category-count { position: relative; z-index: 1; margin-top: 15px; color: var(--brand-deep); font-size: 11px; font-weight: 850; }

    .ranking-layout {
      display: grid;
      grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr);
      gap: 36px;
      align-items: start;
    }
    .ranking-feature {
      position: sticky;
      top: 112px;
      min-height: 465px;
      overflow: hidden;
      color: var(--white);
      background: #20302c;
      border-radius: var(--radius-lg);
      isolation: isolate;
    }
    .ranking-feature img {
      position: absolute;
      z-index: -2;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .ranking-feature::after {
      position: absolute;
      z-index: -1;
      inset: 0;
      background: linear-gradient(0deg, rgba(12,20,19,.9), rgba(12,20,19,.06) 80%);
      content: "";
    }
    .ranking-feature-content { position: absolute; right: 25px; bottom: 27px; left: 25px; }
    .ranking-feature-content .badge { color: var(--ink); background: var(--lime); }
    .ranking-feature-content h3 { margin: 14px 0 8px; font-size: 27px; line-height: 1.3; }
    .ranking-feature-content p { margin: 0; color: rgba(255,255,255,.75); font-size: 13px; line-height: 1.8; }
    .ranking-list { margin: 0; padding: 0; list-style: none; }
    .ranking-item {
      display: grid;
      grid-template-columns: 42px minmax(0, 1fr) 72px 54px;
      align-items: center;
      gap: 13px;
      min-height: 76px;
      padding: 12px 8px;
      border-bottom: 1px solid var(--line);
      transition: background .2s ease, padding .2s ease;
    }
    .ranking-item:first-child { border-top: 1px solid var(--line); }
    .ranking-item:hover { padding-right: 13px; padding-left: 13px; background: var(--white); }
    .rank-number {
      display: grid;
      width: 34px;
      height: 34px;
      place-items: center;
      color: var(--muted);
      background: #f0f2ef;
      border-radius: 11px;
      font-size: 14px;
      font-weight: 900;
    }
    .ranking-item:nth-child(-n+3) .rank-number { color: var(--white); background: var(--brand); }
    .rank-title { overflow: hidden; font-size: 14px; font-weight: 800; text-overflow: ellipsis; white-space: nowrap; }
    .rank-category { display: block; margin-top: 3px; color: var(--muted); font-size: 11px; font-weight: 600; }
    .rank-heat { color: var(--ink-soft); font-size: 12px; font-weight: 750; text-align: right; }
    .rank-score { color: var(--brand-deep); font-size: 13px; font-weight: 900; text-align: right; }

    .format-grid {
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      gap: 0;
      overflow: hidden;
      background: rgba(255,255,255,.08);
      border: 1px solid var(--line-dark);
      border-radius: var(--radius-lg);
    }
    .format-item {
      min-height: 255px;
      padding: 29px;
      border-right: 1px solid var(--line-dark);
    }
    .format-item:last-child { border-right: 0; }
    .format-index { color: var(--lime); font-size: 12px; font-weight: 850; }
    .format-item h3 { margin: 25px 0 9px; font-size: 22px; }
    .format-item p { margin: 0; color: rgba(255,255,255,.68); font-size: 14px; line-height: 1.9; }
    .format-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 19px; }
    .format-tags span {
      padding: 5px 10px;
      color: rgba(255,255,255,.84);
      background: rgba(255,255,255,.09);
      border: 1px solid rgba(255,255,255,.12);
      border-radius: var(--radius-pill);
      font-size: 11px;
      font-weight: 700;
    }

    .timeline {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 0;
      margin-top: 40px;
      border-top: 1px solid #cbd8ce;
    }
    .timeline-item {
      position: relative;
      padding: 28px 22px 0 0;
    }
    .timeline-item::before {
      position: absolute;
      top: -6px;
      left: 0;
      width: 11px;
      height: 11px;
      background: var(--brand);
      border: 3px solid var(--paper);
      border-radius: 50%;
      box-shadow: 0 0 0 1px var(--brand);
      content: "";
    }
    .timeline-date { color: var(--brand-deep); font-size: 12px; font-weight: 850; }
    .timeline-item h3 { margin: 10px 0 6px; font-size: 16px; }
    .timeline-item p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.8; }

    .topic-stage {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 18px;
    }
    .topic-main, .topic-side {
      position: relative;
      min-height: 356px;
      overflow: hidden;
      color: var(--white);
      background: #23322e;
      border-radius: var(--radius-lg);
      isolation: isolate;
    }
    .topic-main img, .topic-side img {
      position: absolute;
      z-index: -2;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .5s ease;
    }
    .topic-main:hover img, .topic-side:hover img { transform: scale(1.04); }
    .topic-main::after, .topic-side::after {
      position: absolute;
      z-index: -1;
      inset: 0;
      background: linear-gradient(90deg, rgba(13,22,20,.78), rgba(13,22,20,.12)), linear-gradient(0deg, rgba(13,22,20,.5), transparent 60%);
      content: "";
    }
    .topic-copy { position: absolute; right: 28px; bottom: 27px; left: 28px; max-width: 520px; }
    .topic-copy .badge { color: var(--ink); background: var(--lime); }
    .topic-copy h3 { margin: 13px 0 7px; font-size: 25px; line-height: 1.3; }
    .topic-copy p { margin: 0; color: rgba(255,255,255,.8); font-size: 13px; line-height: 1.85; }
    .topic-side .topic-copy h3 { font-size: 21px; }

    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 14px;
    }
    .news-card {
      display: grid;
      grid-template-columns: 112px minmax(0, 1fr);
      min-height: 126px;
      overflow: hidden;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      transition: transform .2s ease, box-shadow .2s ease;
    }
    .news-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-soft); }
    .news-card img { width: 100%; height: 100%; min-height: 126px; object-fit: cover; }
    .news-copy { display: flex; flex-direction: column; justify-content: space-between; gap: 8px; padding: 14px; }
    .news-copy h3 { display: -webkit-box; margin: 0; overflow: hidden; font-size: 14px; line-height: 1.6; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
    .news-copy p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.7; }
    .news-date { color: var(--brand-deep); font-size: 11px; font-weight: 800; }

    .trust-layout {
      display: grid;
      grid-template-columns: .82fr 1.18fr;
      gap: 54px;
      align-items: center;
    }
    .trust-aside {
      padding: 30px;
      background: var(--mint);
      border-radius: var(--radius-lg);
    }
    .trust-aside .trust-stamp {
      display: grid;
      width: 56px;
      height: 56px;
      place-items: center;
      color: var(--white);
      background: var(--teal);
      border-radius: 17px;
      font-size: 23px;
      font-weight: 900;
    }
    .trust-aside h3 { margin: 20px 0 8px; font-size: 22px; line-height: 1.4; }
    .trust-aside p { margin: 0; color: var(--ink-soft); font-size: 13px; line-height: 1.9; }
    .trust-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; margin: 0; padding: 0; list-style: none; }
    .trust-list li { display: flex; gap: 13px; padding: 18px 0; border-bottom: 1px solid var(--line); }
    .trust-check {
      display: grid;
      flex: 0 0 27px;
      width: 27px;
      height: 27px;
      place-items: center;
      color: var(--teal);
      background: var(--mint);
      border-radius: 9px;
      font-size: 14px;
      font-weight: 900;
    }
    .trust-list strong { display: block; font-size: 14px; }
    .trust-list span { display: block; margin-top: 4px; color: var(--muted); font-size: 12px; line-height: 1.7; }

    .quick-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 15px;
    }
    .quick-card {
      padding: 25px;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
    }
    .quick-card strong { display: flex; align-items: center; gap: 10px; font-size: 16px; }
    .quick-card strong span {
      display: grid;
      width: 31px;
      height: 31px;
      place-items: center;
      color: var(--brand-deep);
      background: var(--rose);
      border-radius: 10px;
      font-size: 13px;
    }
    .quick-card p { margin: 13px 0 0; color: var(--muted); font-size: 13px; line-height: 1.85; }

    .faq-list { display: grid; gap: 10px; max-width: 920px; }
    .faq-item {
      padding: 0 22px;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: 15px;
      transition: border-color .2s ease, box-shadow .2s ease;
    }
    .faq-item[open] { border-color: #efb1b2; box-shadow: var(--shadow-soft); }
    .faq-item summary {
      position: relative;
      display: flex;
      min-height: 68px;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      color: var(--ink);
      font-size: 15px;
      font-weight: 800;
      cursor: pointer;
      list-style: none;
    }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after {
      display: grid;
      flex: 0 0 30px;
      width: 30px;
      height: 30px;
      place-items: center;
      color: var(--brand-deep);
      background: var(--rose);
      border-radius: 50%;
      content: "+";
      font-size: 19px;
      font-weight: 500;
      transition: transform .2s ease;
    }
    .faq-item[open] summary::after { content: "−"; }
    .faq-answer { max-width: 780px; padding: 0 44px 20px 0; color: var(--muted); font-size: 13px; line-height: 1.9; }

    .closing {
      position: relative;
      overflow: hidden;
      color: var(--white);
      background: linear-gradient(112deg, #c93748 0%, #e84e59 53%, #f07b5e 100%);
      isolation: isolate;
    }
    .closing::after {
      position: absolute;
      z-index: -1;
      top: -95px;
      right: -20px;
      width: 390px;
      height: 390px;
      border: 1px solid rgba(255,255,255,.22);
      border-radius: 50%;
      box-shadow: 0 0 0 42px rgba(255,255,255,.045), 0 0 0 85px rgba(255,255,255,.035);
      content: "";
    }
    .closing-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 35px;
      padding-top: 67px;
      padding-bottom: 67px;
    }
    .closing-copy { max-width: 750px; }
    .closing-copy .eyebrow { color: var(--lime); }
    .closing-copy h2 { margin: 0; font-size: 34px; line-height: 1.35; }
    .closing-copy p { margin: 12px 0 0; color: rgba(255,255,255,.82); font-size: 14px; line-height: 1.9; }
    .closing .button { flex: 0 0 auto; color: var(--ink); background: var(--lime); }
    .closing .button:hover { background: #e7ff9a; }

    .site-footer { color: rgba(255,255,255,.78); background: #17211f; }
    .footer-main {
      display: grid;
      grid-template-columns: 1.45fr 1fr 1fr 1fr;
      gap: 36px;
      padding-top: 58px;
      padding-bottom: 45px;
    }
    .footer-brand .brand { color: var(--white); }
    .footer-brand p { max-width: 340px; margin: 17px 0 0; color: rgba(255,255,255,.57); font-size: 12px; line-height: 1.9; }
    .footer-column h2 { margin: 4px 0 16px; color: var(--white); font-size: 14px; }
    .footer-links { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
    .footer-links a { color: rgba(255,255,255,.62); font-size: 12px; transition: color .2s ease; }
    .footer-links a:hover { color: var(--lime); }
    .footer-bottom {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 10px 24px;
      min-height: 61px;
      border-top: 1px solid rgba(255,255,255,.12);
      color: rgba(255,255,255,.48);
      font-size: 11px;
    }

    @media (max-width: 1024px) {
      :root { --space-section: 76px; }
      .container { width: min(var(--container), calc(100% - 44px)); }
      .nav-shell { gap: 16px; }
      .brand-name { max-width: 210px; font-size: 14px; }
      .nav-link { padding: 0 10px; font-size: 13px; }
      .hero { min-height: 610px; }
      .hero h1 { font-size: 54px; }
      .video-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
      .category-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
      .news-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .trust-layout { gap: 34px; }
      .footer-main { grid-template-columns: 1.3fr 1fr 1fr; }
      .footer-column:last-child { grid-column: 2 / 4; }
    }
    @media (max-width: 768px) {
      :root { --space-section: 64px; }
      html { scroll-padding-top: 78px; }
      .container { width: min(var(--container), calc(100% - 36px)); }
      .nav-shell { min-height: 70px; }
      .brand-mark { flex-basis: 38px; width: 38px; height: 38px; border-radius: 12px; }
      .brand-name { max-width: 250px; font-size: 14px; }
      .nav-toggle { display: grid; }
      .main-nav {
        position: absolute;
        top: calc(100% + 1px);
        right: 0;
        left: 0;
        display: none;
        align-items: stretch;
        padding: 12px 18px 18px;
        background: rgba(246,247,244,.98);
        border-bottom: 1px solid var(--line);
        box-shadow: 0 14px 24px rgba(24,35,33,.08);
      }
      .main-nav.is-open { display: grid; }
      .nav-link { min-height: 46px; padding: 0 14px; }
      .hero { min-height: 630px; }
      .hero-media img { object-position: 58% center; }
      .hero-shade {
        background:
          linear-gradient(90deg, rgba(14,23,22,.82), rgba(14,23,22,.32)),
          linear-gradient(0deg, rgba(14,23,22,.91), rgba(14,23,22,.06) 80%);
      }
      .hero-inner { padding-top: 57px; padding-bottom: 48px; }
      .series-nav { margin-bottom: 42px; }
      .hero h1 { max-width: 680px; font-size: 47px; }
      .hero-subtitle { font-size: 18px; }
      .hero-copy { font-size: 14px; }
      .section-heading { align-items: flex-start; flex-direction: column; gap: 14px; margin-bottom: 27px; }
      .section-heading h2 { font-size: 30px; }
      .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .stat-item { min-height: 125px; padding: 22px; }
      .stat-value { font-size: 34px; }
      .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .latest-tools { align-items: stretch; flex-direction: column; }
      .search-box { flex-basis: auto; width: 100%; }
      .video-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px 13px; }
      .recommend-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .recommend-card:last-child { display: none; }
      .recommend-card { min-height: 315px; }
      .category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .ranking-layout { grid-template-columns: 1fr; gap: 24px; }
      .ranking-feature { position: relative; top: auto; min-height: 320px; }
      .ranking-list { display: grid; grid-template-columns: 1fr 1fr; column-gap: 18px; }
      .ranking-item { grid-template-columns: 35px minmax(0, 1fr) 48px; gap: 9px; }
      .rank-heat { display: none; }
      .format-grid { grid-template-columns: 1fr; }
      .format-item { min-height: auto; padding: 24px; border-right: 0; border-bottom: 1px solid var(--line-dark); }
      .format-item:last-child { border-bottom: 0; }
      .format-item h3 { margin-top: 14px; }
      .timeline { grid-template-columns: 1fr 1fr; row-gap: 20px; }
      .topic-stage { grid-template-columns: 1fr; }
      .topic-main { min-height: 330px; }
      .topic-side { min-height: 280px; }
      .trust-layout { grid-template-columns: 1fr; gap: 22px; }
      .quick-grid { grid-template-columns: 1fr; }
      .closing-inner { align-items: flex-start; flex-direction: column; padding-top: 55px; padding-bottom: 55px; }
      .closing-copy h2 { font-size: 30px; }
      .footer-main { grid-template-columns: 1fr 1fr; gap: 30px 22px; }
      .footer-brand { grid-column: 1 / -1; }
      .footer-column:last-child { grid-column: auto; }
    }
    @media (max-width: 520px) {
      :root { --space-section: 55px; }
      .container { width: calc(100% - 32px); }
      .brand { gap: 9px; }
      .brand-name { max-width: 225px; font-size: 13px; }
      .hero { min-height: 640px; }
      .hero-inner { padding-top: 45px; padding-bottom: 39px; }
      .series-nav { gap: 4px; margin-bottom: 37px; padding: 6px; transform: skewX(-5deg); }
      .series-nav a { min-height: 31px; padding: 0 10px; font-size: 11px; transform: skewX(5deg); }
      .hero h1 { font-size: 38px; line-height: 1.2; overflow-wrap: anywhere; }
      .hero-subtitle { margin-top: 13px; font-size: 16px; }
      .hero-copy { margin-top: 11px; font-size: 13px; line-height: 1.85; }
      .hero-actions { gap: 9px; margin-top: 21px; }
      .button { min-height: 46px; padding: 0 17px; font-size: 13px; }
      .hero-foot { gap: 8px 14px; margin-top: 23px; font-size: 11px; }
      .section-heading h2 { font-size: 26px; }
      .section-heading p { font-size: 13px; }
      .stats-grid { gap: 1px; }
      .stat-item { min-height: 112px; padding: 17px; }
      .stat-value { font-size: 30px; }
      .stat-label { font-size: 12px; }
      .stat-note { font-size: 10px; }
      .service-grid { gap: 10px; }
      .service-card { min-height: 196px; padding: 17px; }
      .service-card h3 { margin-top: 14px; font-size: 15px; }
      .service-card p { font-size: 12px; }
      .filter-list { gap: 6px; }
      .filter-button { min-height: 35px; padding: 0 12px; font-size: 12px; }
      .video-grid { gap: 20px 10px; }
      .video-poster { border-radius: 14px; }
      .poster-badge { top: 8px; left: 8px; min-height: 22px; padding: 0 7px; font-size: 10px; }
      .poster-type { right: 8px; bottom: 8px; font-size: 10px; }
      .video-info { padding-top: 10px; }
      .video-title { font-size: 14px; }
      .video-score { font-size: 11px; }
      .video-desc { min-height: 40px; font-size: 11px; }
      .video-meta { gap: 6px; font-size: 10px; }
      .recommend-grid { grid-template-columns: 1fr; }
      .recommend-card { min-height: 340px; }
      .recommend-card:last-child { display: block; }
      .category-grid { gap: 9px; }
      .category-card { min-height: 202px; padding: 16px; border-radius: 15px; }
      .category-card h3 { margin-top: 14px; font-size: 15px; }
      .category-card p { font-size: 11px; }
      .category-icon { width: 39px; height: 39px; }
      .ranking-feature { min-height: 285px; }
      .ranking-list { grid-template-columns: 1fr; }
      .ranking-item { min-height: 68px; }
      .rank-title { font-size: 13px; }
      .timeline { grid-template-columns: 1fr; margin-top: 25px; }
      .timeline-item { padding: 22px 0 0 18px; }
      .timeline-item::before { top: 23px; }
      .topic-main { min-height: 310px; }
      .topic-side { min-height: 260px; }
      .topic-copy { right: 19px; bottom: 20px; left: 19px; }
      .topic-copy h3 { font-size: 21px; }
      .news-grid { grid-template-columns: 1fr; }
      .news-card { grid-template-columns: 104px minmax(0, 1fr); min-height: 112px; }
      .news-card img { min-height: 112px; }
      .news-copy { padding: 12px; }
      .trust-aside { padding: 22px; }
      .trust-list { grid-template-columns: 1fr; }
      .faq-item { padding: 0 16px; }
      .faq-item summary { min-height: 63px; font-size: 13px; }
      .faq-answer { padding-right: 10px; font-size: 12px; }
      .closing-copy h2 { font-size: 26px; }
      .closing-copy p { font-size: 13px; }
      .footer-main { grid-template-columns: 1fr 1fr; gap: 26px 16px; padding-top: 42px; }
      .footer-brand { grid-column: 1 / -1; }
      .footer-brand .brand-name { max-width: 255px; }
      .footer-column h2 { font-size: 13px; }
      .footer-links a { font-size: 11px; }
      .footer-bottom { align-items: flex-start; flex-direction: column; justify-content: center; padding-top: 14px; padding-bottom: 14px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after {
        scroll-behavior: auto !important;
        transition-duration: .01ms !important;
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
      }
    }