/* roulang page: index */
:root {
      --ink: #17212b;
      --muted: #667787;
      --primary: #1f6f8b;
      --primary-dark: #165a72;
      --primary-pale: #eaf4f8;
      --teal: #2f9e8f;
      --teal-pale: #eaf7f4;
      --coral: #e9785d;
      --coral-dark: #c95f47;
      --coral-pale: #fff0ec;
      --line: #dce7ed;
      --line-strong: #c8dae3;
      --canvas: #f7fafc;
      --surface: #ffffff;
      --surface-alt: #f0f7fa;
      --shadow: 0 12px 32px rgba(24, 63, 82, .10);
      --shadow-hover: 0 18px 40px rgba(24, 63, 82, .16);
      --radius: 12px;
      --radius-sm: 9px;
      --max: 1200px;
      --ease: 200ms ease;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--canvas);
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      font-size: 16px;
      line-height: 1.82;
      letter-spacing: 0;
      overflow-x: hidden;
    }
    a { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; }
    button, input { font: inherit; }
    button { cursor: pointer; }
    button:focus-visible, a:focus-visible, input:focus-visible {
      outline: 3px solid rgba(31, 111, 139, .35);
      outline-offset: 3px;
    }
    ::selection { background: #cce8f1; color: var(--ink); }

    .grid-container { max-width: var(--max); padding-left: 22px; padding-right: 22px; }
    .site-header {
      position: fixed;
      z-index: 100;
      top: 20px;
      left: 0;
      width: 100%;
      pointer-events: none;
    }
    .nav-shell {
      min-height: 62px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      padding: 8px 10px 8px 16px;
      background: rgba(255,255,255,.86);
      border: 1px solid rgba(200,218,227,.85);
      border-radius: 999px;
      box-shadow: 0 8px 25px rgba(25, 72, 94, .10);
      backdrop-filter: blur(12px);
      pointer-events: auto;
      transition: padding var(--ease), box-shadow var(--ease), background var(--ease);
    }
    .site-header.scrolled .nav-shell {
      min-height: 54px;
      padding-top: 5px;
      padding-bottom: 5px;
      box-shadow: 0 8px 20px rgba(25, 72, 94, .14);
      background: rgba(255,255,255,.96);
    }
    .brand {
      flex: 0 0 auto;
      display: inline-flex;
      align-items: center;
      gap: 9px;
      color: var(--ink);
      font-size: 17px;
      font-weight: 800;
      white-space: nowrap;
    }
    .brand-mark {
      width: 29px;
      height: 29px;
      display: grid;
      place-items: center;
      position: relative;
      border-radius: 50%;
      color: #fff;
      background: var(--primary);
      box-shadow: inset 0 0 0 4px #dcedf3;
    }
    .brand-mark::after {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--coral);
      position: absolute;
      right: -2px;
      bottom: 1px;
      border: 2px solid #fff;
    }
    .brand-mark span { font-size: 13px; line-height: 1; }

    .desktop-nav {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 4px;
      margin-left: auto;
    }
    .nav-link {
      min-height: 38px;
      display: inline-flex;
      align-items: center;
      padding: 0 14px;
      border-radius: 999px;
      color: #4c6170;
      font-size: 14px;
      font-weight: 700;
      transition: color var(--ease), background var(--ease);
    }
    .nav-link:hover { color: var(--primary); background: var(--primary-pale); }
    .nav-link.active { color: var(--primary); background: #dfeff4; }

    .nav-actions { display: flex; align-items: center; gap: 8px; }
    .age-link {
      min-height: 38px;
      display: inline-flex;
      align-items: center;
      color: var(--muted);
      font-size: 13px;
      font-weight: 700;
      white-space: nowrap;
      transition: color var(--ease);
    }
    .age-link:hover { color: var(--primary); }

    .button {
      border: 0;
      border-radius: 999px;
      margin: 0;
      font-weight: 800;
      line-height: 1;
      transition: transform var(--ease), box-shadow var(--ease), background var(--ease), color var(--ease);
    }
    .button:hover { transform: translateY(-2px); }
    .button:active { transform: translateY(0); }
    .button.primary-btn {
      min-height: 42px;
      padding: 0 18px;
      color: #fff;
      background: var(--coral);
      box-shadow: 0 7px 15px rgba(233,120,93,.24);
    }
    .button.primary-btn:hover { background: var(--coral-dark); box-shadow: 0 10px 20px rgba(201,95,71,.28); }
    .button.secondary-btn {
      min-height: 46px;
      padding: 0 20px;
      color: var(--primary);
      background: #fff;
      border: 1px solid #a8cad7;
    }
    .button.secondary-btn:hover { background: var(--primary-pale); border-color: var(--primary); }
    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      place-items: center;
      border: 1px solid var(--line);
      border-radius: 50%;
      color: var(--primary);
      background: #fff;
    }

    .mobile-menu {
      display: none;
      margin-top: 10px;
      padding: 12px;
      background: rgba(255,255,255,.98);
      border: 1px solid var(--line);
      border-radius: 14px;
      box-shadow: var(--shadow);
      pointer-events: auto;
    }
    .mobile-menu.is-open { display: block; }
    .mobile-menu a {
      min-height: 46px;
      display: flex;
      align-items: center;
      padding: 0 12px;
      border-bottom: 1px solid #edf2f5;
      color: var(--ink);
      font-weight: 700;
    }
    .mobile-menu a:last-child { border: 0; }
    .mobile-menu a.active { color: var(--primary); background: var(--primary-pale); border-radius: 8px; }

    .hero {
      min-height: 790px;
      position: relative;
      display: flex;
      align-items: flex-end;
      padding: 158px 0 68px;
      overflow: hidden;
      background:
        linear-gradient(90deg, rgba(247,250,252,.98) 0%, rgba(247,250,252,.92) 43%, rgba(236,246,250,.70) 100%),
        linear-gradient(135deg, #e6f2f6 0%, #f9fcfd 52%, #ddecf1 100%);
    }
    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      opacity: .85;
      background-image:
        linear-gradient(rgba(31,111,139,.065) 1px, transparent 1px),
        linear-gradient(90deg, rgba(31,111,139,.065) 1px, transparent 1px);
      background-size: 42px 42px;
      mask-image: linear-gradient(90deg, #000 0%, #000 50%, transparent 100%);
    }
    .hero::after {
      content: "";
      position: absolute;
      right: -6%;
      top: 100px;
      width: 53%;
      height: 590px;
      border-radius: 48% 0 0 48%;
      background:
        linear-gradient(155deg, transparent 0 16%, rgba(255,255,255,.70) 16% 18%, transparent 18% 43%, rgba(47,158,143,.12) 43% 45%, transparent 45%),
        linear-gradient(135deg, #cae2ea, #eef7f9 48%, #b9d7e1);
      box-shadow: inset 25px 0 55px rgba(255,255,255,.7);
      opacity: .9;
    }
    .hero-content { position: relative; z-index: 2; width: 100%; }
    .hero-grid { align-items: end; }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 11px;
      color: var(--primary-dark);
      background: rgba(255,255,255,.74);
      border: 1px solid #cce0e8;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 800;
    }
    .eyebrow i {
      width: 7px;
      height: 7px;
      display: inline-block;
      border-radius: 50%;
      background: var(--teal);
    }
    h1, h2, h3, p { margin-top: 0; }
    h1 {
      max-width: 760px;
      margin: 19px 0 18px;
      color: var(--ink);
      font-size: 52px;
      line-height: 1.22;
      font-weight: 850;
    }
    .hero-copy {
      max-width: 710px;
      margin-bottom: 23px;
      color: #526574;
      font-size: 17px;
      line-height: 1.9;
    }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 16px; }
    .hero-note { margin: 0; color: #738392; font-size: 13px; line-height: 1.65; }

    .preview-stack {
      width: min(100%, 390px);
      margin-left: auto;
      position: relative;
      z-index: 3;
    }
    .topic-preview {
      position: relative;
      min-height: 310px;
      padding: 24px;
      overflow: hidden;
      background: rgba(255,255,255,.87);
      border: 1px solid rgba(255,255,255,.9);
      border-radius: 16px;
      box-shadow: 0 22px 46px rgba(34,82,101,.17);
      backdrop-filter: blur(9px);
    }
    .preview-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
    .preview-kicker { color: var(--primary); font-size: 13px; font-weight: 800; }
    .live-dot { display: inline-flex; align-items: center; gap: 6px; color: var(--coral-dark); font-size: 12px; font-weight: 800; }
    .live-dot::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--coral); }
    .preview-title { margin: 30px 0 11px; font-size: 24px; line-height: 1.42; font-weight: 850; }
    .preview-copy { color: var(--muted); font-size: 14px; line-height: 1.75; }
    .progress-row { margin-top: 22px; display: flex; align-items: center; gap: 14px; }
    .progress-ring {
      width: 58px; height: 58px; display: grid; place-items: center; flex: 0 0 auto;
      border-radius: 50%;
      background: conic-gradient(var(--teal) 0 72%, #dcecf1 72% 100%);
    }
    .progress-ring span {
      width: 45px; height: 45px; display: grid; place-items: center;
      border-radius: 50%; background: #fff; color: var(--primary-dark); font-size: 12px; font-weight: 850;
    }
    .progress-text strong { display: block; font-size: 14px; }
    .progress-text small { display: block; color: var(--muted); font-size: 12px; }
    .preview-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 20px; }
    .tag {
      display: inline-flex; align-items: center; min-height: 27px; padding: 3px 9px;
      border: 1px solid #cfe2e9; border-radius: 999px; color: #557080; background: #f8fcfd;
      font-size: 12px; font-weight: 700;
    }
    .tag.hot { color: #b8523c; border-color: #f4c4b8; background: var(--coral-pale); }
    .tag.ready { color: #247b70; border-color: #b7e2da; background: var(--teal-pale); }

    .topic-strip {
      position: relative;
      z-index: 4;
      margin-top: -1px;
      border-top: 1px solid rgba(200,218,227,.7);
      border-bottom: 1px solid rgba(200,218,227,.7);
      background: rgba(255,255,255,.78);
    }
    .strip-inner { min-height: 70px; display: flex; align-items: center; gap: 12px; overflow-x: auto; scrollbar-width: none; }
    .strip-inner::-webkit-scrollbar { display: none; }
    .strip-label { flex: 0 0 auto; color: var(--primary); font-size: 13px; font-weight: 850; }
    .strip-item {
      flex: 0 0 auto; display: inline-flex; align-items: center; gap: 7px; min-height: 33px; padding: 0 11px;
      border-left: 1px solid var(--line); color: #5e7281; font-size: 13px; white-space: nowrap;
    }
    .strip-item b { color: var(--ink); font-size: 12px; }

    main { background: var(--canvas); }
    .section { padding: 100px 0; }
    .section.white { background: var(--surface); }
    .section.alt { background: var(--surface-alt); }
    .section-heading { max-width: 690px; margin-bottom: 42px; }
    .section-kicker {
      margin-bottom: 11px; color: var(--primary); font-size: 13px; font-weight: 850;
    }
    h2 { margin-bottom: 14px; font-size: 34px; line-height: 1.3; font-weight: 850; }
    .section-intro { margin-bottom: 0; color: var(--muted); font-size: 16px; line-height: 1.86; }

    .preview-event {
      height: 100%;
      min-height: 385px;
      padding: 34px;
      position: relative;
      overflow: hidden;
      color: #fff;
      background: #1f6f8b;
      border-radius: var(--radius);
      box-shadow: var(--shadow);
    }
    .preview-event::before {
      content: "";
      position: absolute;
      right: -75px;
      bottom: -95px;
      width: 310px; height: 310px;
      border: 42px solid rgba(255,255,255,.12);
      border-radius: 50%;
    }
    .preview-event::after {
      content: "";
      position: absolute;
      right: 64px; top: 32px;
      width: 88px; height: 118px;
      border-radius: 44px 44px 10px 10px;
      background: rgba(255,255,255,.12);
      transform: rotate(18deg);
    }
    .event-content { position: relative; z-index: 2; max-width: 390px; }
    .event-badge { color: #d7f1eb; font-size: 13px; font-weight: 800; }
    .preview-event h3 { margin: 34px 0 12px; color: #fff; font-size: 29px; line-height: 1.35; font-weight: 850; }
    .preview-event p { color: rgba(255,255,255,.82); font-size: 15px; }
    .event-time { display: inline-flex; align-items: center; gap: 8px; margin-top: 16px; color: #fff; font-size: 14px; font-weight: 800; }
    .event-time span { width: 9px; height: 9px; border-radius: 50%; background: var(--coral); }

    .event-detail { padding: 7px 0 0 44px; }
    .event-detail h3 { margin-bottom: 14px; font-size: 25px; line-height: 1.4; font-weight: 850; }
    .event-detail > p { color: var(--muted); }
    .schedule-list { margin: 27px 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
    .schedule-list li {
      display: grid; grid-template-columns: 74px 1fr auto; gap: 12px; align-items: center;
      min-height: 66px; border-bottom: 1px solid var(--line); color: #526574; font-size: 14px;
    }
    .schedule-list time { color: var(--primary); font-weight: 850; }
    .status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--teal); }

    .feature-path { position: relative; }
    .feature-path::before { content: ""; position: absolute; left: 26px; top: 28px; bottom: 31px; width: 1px; background: var(--line-strong); }
    .path-item { position: relative; padding: 0 0 46px 78px; }
    .path-item:last-child { padding-bottom: 0; }
    .path-num {
      position: absolute; left: 0; top: 0; z-index: 2; width: 52px; height: 52px;
      display: grid; place-items: center; border-radius: 50%; color: var(--primary); background: #fff;
      border: 1px solid #bcd5df; font-size: 15px; font-weight: 850;
    }
    .path-item h3 { margin-bottom: 8px; font-size: 21px; font-weight: 850; }
    .path-item p { max-width: 490px; margin-bottom: 11px; color: var(--muted); font-size: 15px; }
    .inline-tags { display: flex; flex-wrap: wrap; gap: 7px; }

    .look-panel {
      min-height: 455px; position: relative; overflow: hidden; padding: 32px;
      background: #e0eff4; border: 1px solid #cfe1e8; border-radius: var(--radius);
    }
    .look-panel::before {
      content: ""; position: absolute; right: -20px; top: -40px; width: 290px; height: 390px;
      border-radius: 150px 150px 0 0; background: #b8d7e1;
    }
    .look-panel::after {
      content: ""; position: absolute; right: 70px; bottom: -40px; width: 175px; height: 320px;
      border-radius: 100px 100px 0 0; background: #7caeba; opacity: .75;
    }
    .filter-window {
      position: relative; z-index: 2; width: min(100%, 385px); padding: 22px; background: rgba(255,255,255,.93);
      border: 1px solid rgba(255,255,255,.9); border-radius: 11px; box-shadow: 0 15px 30px rgba(31,83,103,.14);
    }
    .filter-window strong { display: block; margin-bottom: 16px; font-size: 15px; }
    .filter-row { display: flex; align-items: center; justify-content: space-between; min-height: 42px; border-bottom: 1px solid var(--line); color: #627684; font-size: 13px; }
    .filter-row:last-child { border-bottom: 0; }
    .filter-row b { color: var(--primary); font-size: 12px; }

    .insight-layout { align-items: stretch; }
    .metric-board {
      min-height: 100%; padding: 35px; color: var(--ink); background: #fff;
      border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
    }
    .metric-board h3 { margin-bottom: 25px; font-size: 23px; }
    .metric { padding: 19px 0; border-top: 1px solid var(--line); }
    .metric:first-of-type { border-top: 0; padding-top: 0; }
    .metric-number { color: var(--primary); font-size: 39px; line-height: 1; font-weight: 850; }
    .metric-label { margin-top: 8px; color: var(--muted); font-size: 14px; }
    .metric-bar { height: 5px; margin-top: 12px; overflow: hidden; background: #e8f0f3; border-radius: 999px; }
    .metric-bar span { display: block; height: 100%; background: var(--teal); border-radius: inherit; }

    .editorial-grid { display: grid; grid-template-columns: 1.15fr .85fr; grid-template-rows: 1fr 1fr; gap: 18px; height: 100%; }
    .topic-card {
      display: flex; flex-direction: column; overflow: hidden; background: #fff; border: 1px solid var(--line);
      border-radius: var(--radius); box-shadow: 0 8px 18px rgba(24,63,82,.06); transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }
    .topic-card:hover { transform: translateY(-4px); border-color: #acd0dd; box-shadow: var(--shadow-hover); }
    .topic-card.featured { grid-row: span 2; }
    .card-cover {
      position: relative; min-height: 120px; aspect-ratio: 16 / 9; overflow: hidden; background: #d7e9ef;
    }
    .featured .card-cover { min-height: 220px; }
    .cover-one { background: linear-gradient(145deg, #c6e0e9 0%, #f8fbfc 48%, #b6d4de 48%, #dcecf1 100%); }
    .cover-two { background: linear-gradient(135deg, #e3f1f0 0 50%, #a9d6cf 50% 75%, #dff0ed 75%); }
    .cover-three { background: linear-gradient(155deg, #d8e9f0 0 42%, #8fbfcf 42% 60%, #f5fafb 60%); }
    .cover-one::after, .cover-two::after, .cover-three::after {
      content: ""; position: absolute; width: 92px; height: 130px; right: 17%; bottom: -18px;
      border-radius: 55px 55px 0 0; background: rgba(23,33,43,.13);
    }
    .cover-two::after { width: 75px; height: 108px; right: 23%; background: rgba(31,111,139,.22); }
    .cover-three::after { width: 108px; height: 95px; right: 14%; border-radius: 55px 55px 8px 8px; background: rgba(47,158,143,.20); }
    .cover-label {
      position: absolute; z-index: 2; top: 13px; left: 13px; padding: 4px 8px; color: var(--primary-dark);
      background: rgba(255,255,255,.88); border-radius: 999px; font-size: 11px; font-weight: 850;
    }
    .card-body { display: flex; flex: 1; flex-direction: column; padding: 18px; }
    .card-body h3 { margin-bottom: 8px; font-size: 19px; line-height: 1.45; font-weight: 850; }
    .card-body p {
      display: -webkit-box; overflow: hidden; margin-bottom: 13px; color: var(--muted); font-size: 13px; line-height: 1.7;
      -webkit-line-clamp: 2; -webkit-box-orient: vertical;
    }
    .card-meta { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: auto; color: #81919d; font-size: 12px; }
    .arrow-link { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; color: var(--primary); background: var(--primary-pale); transition: background var(--ease), color var(--ease), transform var(--ease); }
    .topic-card:hover .arrow-link { color: #fff; background: var(--primary); transform: translateX(2px); }

    .news-section { padding-top: 92px; padding-bottom: 92px; }
    .news-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
    .news-item {
      display: grid; grid-template-columns: 90px 1fr auto; align-items: center; gap: 20px; min-height: 92px;
      border-bottom: 1px solid var(--line); transition: padding var(--ease), background var(--ease);
    }
    .news-item:hover { padding-left: 12px; background: #fbfdfe; }
    .news-date { color: var(--primary); font-size: 13px; font-weight: 850; }
    .news-title { display: block; margin-bottom: 2px; font-size: 17px; font-weight: 850; }
    .news-desc { display: block; color: var(--muted); font-size: 13px; }
    .news-arrow { color: var(--primary); font-size: 24px; line-height: 1; }
    .ranking-panel {
      height: 100%; padding: 28px; background: var(--primary-pale); border: 1px solid #cfe2e9; border-radius: var(--radius);
    }
    .ranking-panel h3 { margin-bottom: 5px; font-size: 22px; }
    .ranking-panel > p { margin-bottom: 16px; color: var(--muted); font-size: 14px; }
    .rank-row { display: grid; grid-template-columns: 30px 1fr auto; align-items: center; gap: 10px; min-height: 54px; border-top: 1px solid #cee0e7; }
    .rank-no { color: var(--primary); font-weight: 850; }
    .rank-name { font-size: 14px; font-weight: 750; }
    .trend { color: var(--teal); font-size: 12px; font-weight: 800; }

    .subscription-wrap {
      padding: 46px; position: relative; overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
    }
    .subscription-wrap::after {
      content: ""; position: absolute; right: -24px; top: -82px; width: 260px; height: 260px; border: 36px solid #e2f0f4; border-radius: 50%;
    }
    .subscription-copy { position: relative; z-index: 2; }
    .subscription-copy h2 { margin-bottom: 12px; }
    .subscription-copy p { max-width: 610px; margin-bottom: 0; color: var(--muted); }
    .subscribe-form {
      position: relative; z-index: 2; display: flex; align-items: flex-end; gap: 11px; margin-top: 26px;
    }
    .field { flex: 1; margin: 0; }
    .field label { display: block; margin-bottom: 7px; color: #506470; font-size: 13px; font-weight: 800; }
    .field input {
      width: 100%; min-height: 48px; padding: 0 14px; color: var(--ink); border: 1px solid #bcd5df; border-radius: 9px;
      background: #fff; box-shadow: none; transition: border-color var(--ease), box-shadow var(--ease);
    }
    .field input::placeholder { color: #9aa9b2; }
    .field input:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(31,111,139,.12); }
    .form-status { position: relative; z-index: 2; min-height: 20px; margin: 10px 0 0; color: var(--muted); font-size: 12px; }

    .faq-section { padding-top: 96px; }
    .faq-layout { align-items: start; }
    .faq-side { padding-right: 42px; }
    .faq-side h2 { margin-bottom: 15px; }
    .faq-side p { color: var(--muted); }
    .accordion { margin: 0; background: transparent; }
    .accordion-item { margin-bottom: 9px; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: #fff; }
    .accordion-title {
      min-height: 60px; display: flex; align-items: center; padding: 14px 49px 14px 18px; position: relative; border: 0;
      color: var(--ink); font-size: 16px; font-weight: 800; line-height: 1.5; transition: color var(--ease), background var(--ease);
    }
    .accordion-title:hover, .accordion-title:focus { color: var(--primary); background: #fbfdfe; }
    .accordion-title::before { content: "+"; right: 18px; top: 50%; margin-top: -15px; color: var(--primary); font-size: 25px; font-weight: 400; }
    .accordion-item.is-active > .accordion-title::before { content: "−"; }
    .accordion-content { padding: 0 20px 19px; border: 0; color: var(--muted); font-size: 14px; line-height: 1.85; }

    .closing { padding: 48px 0 100px; }
    .closing-band {
      display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 42px 46px;
      background: #eaf5f8; border: 1px solid #cfe3e9; border-radius: var(--radius);
    }
    .closing-band h2 { margin-bottom: 10px; font-size: 30px; }
    .closing-band p { max-width: 630px; margin-bottom: 0; color: var(--muted); font-size: 15px; }
    .closing-actions { display: flex; flex: 0 0 auto; flex-wrap: wrap; gap: 10px; justify-content: flex-end; }

    .site-footer { border-top: 1px solid var(--line); background: #f1f6f8; }
    .footer-main { padding: 55px 0 28px; }
    .footer-brand { margin-bottom: 13px; }
    .footer-text { max-width: 410px; color: var(--muted); font-size: 14px; }
    .footer-nav { display: flex; flex-wrap: wrap; gap: 10px 22px; justify-content: flex-end; padding-top: 6px; }
    .footer-nav a { color: #526675; font-size: 14px; font-weight: 700; transition: color var(--ease); }
    .footer-nav a:hover { color: var(--primary); }
    .footer-bottom {
      display: flex; justify-content: space-between; gap: 18px; padding: 19px 0 25px; border-top: 1px solid #d7e4e9;
      color: #7c8c97; font-size: 12px;
    }

    .age-modal {
      display: none; position: fixed; z-index: 500; inset: 0; align-items: center; justify-content: center; padding: 18px;
      background: rgba(23,33,43,.46);
    }
    .age-modal.is-visible { display: flex; }
    .modal-box { width: min(100%, 470px); padding: 30px; background: #fff; border-radius: 14px; box-shadow: 0 24px 60px rgba(0,0,0,.24); }
    .modal-box h2 { margin-bottom: 12px; font-size: 25px; }
    .modal-box p { color: var(--muted); font-size: 14px; }
    .modal-actions { display: flex; gap: 10px; margin-top: 22px; }
    .modal-actions .button { flex: 1; min-height: 46px; }

    @media screen and (max-width: 1024px) {
      .desktop-nav { gap: 0; }
      .nav-link { padding: 0 9px; font-size: 13px; }
      .age-link { display: none; }
      h1 { font-size: 45px; }
      .hero { min-height: 730px; }
      .preview-stack { width: min(100%, 340px); }
      .event-detail { padding-left: 20px; }
      .faq-side { padding-right: 20px; }
    }
    @media screen and (max-width: 767px) {
      .grid-container { padding-left: 18px; padding-right: 18px; }
      .site-header { top: 12px; }
      .nav-shell { min-height: 56px; padding: 6px 7px 6px 14px; }
      .desktop-nav, .nav-actions .primary-btn { display: none; }
      .menu-toggle { display: grid; }
      .hero { min-height: auto; padding: 125px 0 55px; }
      .hero::after { width: 85%; height: 380px; top: 230px; right: -35%; opacity: .52; }
      h1 { max-width: 620px; font-size: 39px; }
      .hero-copy { font-size: 16px; }
      .preview-stack { width: 100%; margin: 35px 0 0; }
      .topic-preview { min-height: 270px; }
      .section { padding: 65px 0; }
      .section-heading { margin-bottom: 30px; }
      h2 { font-size: 29px; }
      .event-detail { padding: 28px 0 0; }
      .preview-event { min-height: 330px; }
      .look-panel { margin-top: 30px; min-height: 380px; }
      .editorial-grid { margin-top: 22px; min-height: 650px; }
      .news-section { padding-top: 65px; padding-bottom: 65px; }
      .ranking-panel { margin-top: 24px; }
      .faq-side { padding: 0 0 26px; }
      .closing { padding: 25px 0 65px; }
      .closing-band { display: block; padding: 32px 26px; }
      .closing-actions { justify-content: flex-start; margin-top: 22px; }
      .footer-nav { justify-content: flex-start; margin-top: 22px; }
      .footer-bottom { display: block; }
      .footer-bottom span + span { display: block; margin-top: 5px; }
    }
    @media screen and (max-width: 520px) {
      .brand { font-size: 15px; }
      .brand-mark { width: 27px; height: 27px; }
      h1 { font-size: 33px; line-height: 1.29; }
      .hero-copy { font-size: 15px; line-height: 1.8; }
      .hero-actions { display: grid; grid-template-columns: 1fr 1fr; }
      .hero-actions .button { width: 100%; min-height: 47px; padding: 0 10px; font-size: 14px; }
      .section { padding: 54px 0; }
      h2 { font-size: 26px; }
      .section-intro { font-size: 15px; }
      .schedule-list li { grid-template-columns: 62px 1fr auto; gap: 8px; font-size: 13px; }
      .path-item { padding-left: 66px; }
      .feature-path::before { left: 22px; }
      .path-num { width: 45px; height: 45px; font-size: 13px; }
      .look-panel { padding: 19px; }
      .filter-window { padding: 16px; }
      .metric-board { padding: 25px; }
      .metric-number { font-size: 34px; }
      .editorial-grid { grid-template-columns: 1fr; grid-template-rows: auto; min-height: auto; }
      .topic-card.featured { grid-row: auto; }
      .featured .card-cover { min-height: 170px; }
      .news-item { grid-template-columns: 63px 1fr auto; gap: 10px; min-height: 104px; }
      .news-desc { line-height: 1.5; }
      .subscription-wrap { padding: 28px 20px; }
      .subscribe-form { display: block; }
      .subscribe-form .button { width: 100%; margin-top: 12px; min-height: 48px; }
      .closing-band { padding: 27px 20px; }
      .closing-actions { display: grid; grid-template-columns: 1fr; }
      .closing-actions .button { width: 100%; }
      .modal-actions { display: block; }
      .modal-actions .button + .button { margin-top: 10px; }
    }

/* roulang page: category1 */
:root {
      --ink:#17212b;--muted:#667787;--primary:#1f6f8b;--primary-dark:#165a72;
      --primary-pale:#eaf4f8;--teal:#2f9e8f;--teal-pale:#eaf7f4;
      --coral:#e9785d;--coral-dark:#c95f47;--coral-pale:#fff0ec;
      --line:#dce7ed;--line-strong:#c8dae3;--canvas:#f7fafc;--surface:#fff;
      --surface-alt:#f0f7fa;--shadow:0 12px 32px rgba(24,63,82,.10);
      --shadow-hover:0 18px 40px rgba(24,63,82,.16);--radius:12px;--radius-sm:9px;
      --max:1200px;--ease:200ms ease
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:var(--canvas);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.82;letter-spacing:0;overflow-x:hidden}
    a{color:inherit;text-decoration:none} img{display:block;max-width:100%}
    button,input{font:inherit}button{cursor:pointer}
    button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid rgba(31,111,139,.35);outline-offset:3px}
    .grid-container{max-width:var(--max);padding-left:22px;padding-right:22px}
    .site-header{position:fixed;z-index:100;top:20px;left:0;width:100%;pointer-events:none}
    .nav-shell{min-height:62px;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:8px 10px 8px 16px;background:rgba(255,255,255,.88);border:1px solid rgba(200,218,227,.85);border-radius:999px;box-shadow:0 8px 25px rgba(25,72,94,.10);backdrop-filter:blur(12px);pointer-events:auto;transition:all var(--ease)}
    .site-header.scrolled .nav-shell{min-height:54px;padding-top:5px;padding-bottom:5px;box-shadow:0 8px 20px rgba(25,72,94,.14);background:rgba(255,255,255,.96)}
    .brand{display:inline-flex;align-items:center;gap:9px;color:var(--ink);font-size:17px;font-weight:800;white-space:nowrap}
    .brand-mark{width:29px;height:29px;display:grid;place-items:center;position:relative;border-radius:50%;color:#fff;background:var(--primary);box-shadow:inset 0 0 0 4px #dcedf3}
    .brand-mark:after{content:"";width:7px;height:7px;border-radius:50%;background:var(--coral);position:absolute;right:-2px;bottom:1px;border:2px solid #fff}
    .brand-mark span{font-size:13px;line-height:1}
    .desktop-nav{display:flex;align-items:center;justify-content:center;gap:4px;margin-left:auto}
    .nav-link{min-height:38px;display:inline-flex;align-items:center;padding:0 14px;border-radius:999px;color:#4c6170;font-size:14px;font-weight:700;transition:all var(--ease)}
    .nav-link:hover{color:var(--primary);background:var(--primary-pale)}
    .nav-link.active{color:var(--primary);background:#dfeff4}
    .nav-actions{display:flex;align-items:center;gap:8px}
    .button{border:0;border-radius:999px;margin:0;font-weight:800;line-height:1;transition:all var(--ease)}
    .button:hover{transform:translateY(-2px)}.button:active{transform:translateY(0)}
    .primary-btn{min-height:42px;padding:0 18px;color:#fff;background:var(--coral);box-shadow:0 7px 15px rgba(233,120,93,.24)}
    .primary-btn:hover{background:var(--coral-dark);box-shadow:0 10px 20px rgba(201,95,71,.28)}
    .secondary-btn{min-height:46px;padding:0 20px;color:var(--primary);background:#fff;border:1px solid #a8cad7}
    .secondary-btn:hover{background:var(--primary-pale);border-color:var(--primary)}
    .menu-toggle{display:none;width:44px;height:44px;place-items:center;border:1px solid var(--line);border-radius:50%;color:var(--primary);background:#fff}
    .mobile-menu{display:none;margin-top:10px;padding:12px;background:rgba(255,255,255,.98);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);pointer-events:auto}
    .mobile-menu.is-open{display:block}.mobile-menu a{min-height:46px;display:flex;align-items:center;padding:0 12px;border-bottom:1px solid #edf2f5;color:var(--ink);font-weight:700}
    .mobile-menu a:last-child{border:0}.mobile-menu a.active{color:var(--primary);background:var(--primary-pale);border-radius:8px}
    .category-hero{padding:150px 0 64px;background:linear-gradient(135deg,#edf7fa 0%,#f7fafc 62%,#e9f4f3 100%);border-bottom:1px solid var(--line)}
    .crumbs{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:24px}
    .crumbs a:hover{color:var(--primary)}.crumbs span{color:#9bb0ba}
    h1,h2,h3,p{margin-top:0}h1{font-size:clamp(38px,5vw,56px);line-height:1.2;max-width:760px;margin-bottom:20px;letter-spacing:0}
    .lead{max-width:720px;color:var(--muted);font-size:18px;line-height:1.8;margin-bottom:28px}
    .hero-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
    .badge,.tag{display:inline-flex;align-items:center;min-height:30px;padding:3px 11px;border-radius:999px;font-size:13px;font-weight:700;border:1px solid var(--line-strong);background:#fff;color:var(--primary)}
    .badge.teal{color:var(--teal);background:var(--teal-pale);border-color:#bfe3dc}.badge.coral{color:var(--coral-dark);background:var(--coral-pale);border-color:#f3c8bd}
    .browse-section{padding:82px 0 92px}
    .section-kicker{color:var(--primary);font-size:13px;font-weight:800;letter-spacing:1px;margin-bottom:10px}
    .section-title{font-size:32px;line-height:1.3;margin-bottom:12px}.section-intro{color:var(--muted);max-width:620px;margin-bottom:28px}
    .filter-panel{position:sticky;top:105px;padding:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 22px rgba(24,63,82,.06)}
    .filter-panel h2{font-size:20px;margin-bottom:18px}.filter-group{padding:18px 0;border-top:1px solid var(--line)}.filter-group:first-of-type{border-top:0;padding-top:0}
    .filter-label{display:block;color:var(--ink);font-size:14px;font-weight:800;margin-bottom:10px}
    .filter-options{display:flex;flex-wrap:wrap;gap:8px}.filter-chip{min-height:36px;padding:5px 12px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--muted);font-size:13px;transition:all var(--ease)}
    .filter-chip:hover,.filter-chip.active{color:var(--primary);background:var(--primary-pale);border-color:#a8cad7}
    .filter-note{font-size:13px;color:var(--muted);margin:16px 0 0}
    .content-flow{display:grid;grid-template-columns:1.25fr .75fr;gap:22px}
    .topic-card{position:relative;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 24px rgba(24,63,82,.06);transition:all var(--ease)}
    .topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#afd0db}
    .topic-card.featured{grid-column:1/-1;display:grid;grid-template-columns:1.05fr .95fr}
    .cover{min-height:190px;position:relative;overflow:hidden;background:linear-gradient(140deg,#dbeef3,#b8d9df 48%,#dcefe9)}
    .cover:before{content:"";position:absolute;inset:18% 14%;border:1px solid rgba(255,255,255,.72);border-radius:50% 42% 45% 35%;transform:rotate(-15deg)}
    .cover:after{content:"主题索引";position:absolute;left:20px;bottom:18px;padding:4px 10px;border-radius:999px;color:#fff;background:rgba(23,64,80,.48);font-size:12px;font-weight:700}
    .cover.warm{background:linear-gradient(140deg,#f5ddd5,#e8b9aa 52%,#f3e6d7)}.cover.green{background:linear-gradient(140deg,#dceee8,#a9d4c9 55%,#e7f1e8)}.cover.blue{background:linear-gradient(140deg,#d7e9f2,#a7c9d9 55%,#e4edf1)}
    .topic-body{padding:22px}.topic-body h3{font-size:21px;line-height:1.4;margin:10px 0 8px}.topic-body p{color:var(--muted);font-size:14px;line-height:1.75;margin-bottom:15px}
    .topic-tags{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:16px}.topic-meta{display:flex;align-items:center;justify-content:space-between;color:#81929d;font-size:12px;border-top:1px solid #edf2f5;padding-top:13px}
    .arrow-link{width:36px;height:36px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;color:var(--primary);font-size:20px;transition:all var(--ease)}
    .arrow-link:hover{color:#fff;background:var(--primary);border-color:var(--primary)}
    .index-strip{margin:42px 0;padding:22px 24px;background:var(--surface-alt);border:1px solid var(--line);border-left:4px solid var(--teal);border-radius:var(--radius-sm);display:flex;justify-content:space-between;gap:20px;align-items:center}
    .index-strip strong{font-size:18px}.index-strip p{margin:3px 0 0;color:var(--muted);font-size:14px}.index-value{color:var(--primary);font-weight:800;white-space:nowrap}
    .pagination-wrap{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:40px}.page-btn{min-width:44px;height:44px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;color:var(--primary);background:#fff;font-weight:700}
    .page-btn:hover,.page-btn.active{color:#fff;background:var(--primary);border-color:var(--primary)}.page-btn.disabled{color:#aebbc2;background:#f1f5f7;cursor:not-allowed}
    .faq-section{padding:76px 0;background:#fff;border-top:1px solid var(--line)}.faq-list{max-width:820px;margin-top:28px}
    .faq-item{border-top:1px solid var(--line)}.faq-item:last-child{border-bottom:1px solid var(--line)}
    .faq-question{width:100%;min-height:66px;padding:14px 4px;display:flex;justify-content:space-between;align-items:center;text-align:left;border:0;background:none;color:var(--ink);font-weight:800}
    .faq-icon{color:var(--primary);font-size:24px;font-weight:400}.faq-answer{display:none;max-width:700px;padding:0 38px 20px 4px;color:var(--muted);font-size:15px}.faq-item.open .faq-answer{display:block}
    .notice{padding:20px 0;color:var(--muted);font-size:14px}.notice strong{color:var(--ink)}
    .site-footer{padding:48px 0 24px;background:#edf5f8;border-top:1px solid var(--line)}.footer-main{padding-bottom:32px}.footer-brand{font-size:18px}.footer-text{max-width:520px;color:var(--muted);font-size:14px;margin:14px 0 0}.footer-nav{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:10px 22px;color:#536a77;font-size:14px;font-weight:700}.footer-nav a:hover{color:var(--primary)}
    .footer-bottom{display:flex;justify-content:space-between;padding-top:20px;border-top:1px solid var(--line-strong);color:#81929d;font-size:12px}
    .modal-backdrop{display:none;position:fixed;z-index:200;inset:0;background:rgba(23,33,43,.42);align-items:center;justify-content:center;padding:20px}.modal-backdrop.open{display:flex}.age-modal{max-width:460px;padding:30px;background:#fff;border-radius:var(--radius);box-shadow:0 20px 60px rgba(23,33,43,.22)}.age-modal h2{font-size:24px}.age-modal p{color:var(--muted);font-size:14px}.modal-actions{display:flex;gap:10px;margin-top:22px}
    @media(max-width:1024px){.content-flow{grid-template-columns:1fr}.topic-card.featured{grid-template-columns:1fr}.filter-panel{position:static}.filter-panel h2{margin-bottom:12px}}
    @media(max-width:767px){.site-header{top:12px}.desktop-nav,.nav-actions .age-link,.nav-actions .primary-btn{display:none}.menu-toggle{display:grid}.category-hero{padding-top:118px;padding-bottom:48px}h1{font-size:38px}.lead{font-size:16px}.browse-section{padding:56px 0 64px}.section-title{font-size:28px}.index-strip{display:block}.index-value{display:block;margin-top:12px}.footer-nav{justify-content:flex-start;margin-top:24px}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:6px}}
    @media(max-width:480px){.grid-container{padding-left:17px;padding-right:17px}.nav-shell{padding-left:12px}.brand{font-size:15px}.brand-mark{width:27px;height:27px}.topic-body{padding:18px}.modal-actions{flex-direction:column}.modal-actions .button{width:100%}}