/* roulang page: index */
:root {
      --c-air: #12948C;
      --c-air-deep: #0E7A74;
      --c-blade: #2F8F5B;
      --c-dawn: #C8921A;
      --c-dawn-soft: #E8C56A;
      --c-tower: #8B97A1;
      --c-fog: #F2F6F4;
      --c-paper: #FBFFFD;
      --c-ink: #122426;
      --c-muted: #5B6B6D;
      --c-line: #D5E0DC;
      --c-night: #0C2426;
      --c-night-2: #143A3C;
      --c-white: #F7FBFA;
      --radius: 24px;
      --radius-lg: 28px;
      --radius-sm: 14px;
      --shadow: 0 12px 32px rgba(12, 36, 38, .08);
      --shadow-hover: 0 18px 40px rgba(18, 148, 140, .18);
      --container: 1220px;
      --header-top: 42px;
      --header-main: 74px;
      --font: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --mono: "JetBrains Mono", "DIN Alternate", ui-monospace, monospace;
      --grad: linear-gradient(120deg, #12948C 0%, #2F8F5B 100%);
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    html, body { margin: 0; padding: 0; max-width: 100%; overflow-x: hidden; }
    body {
      font-family: var(--font);
      color: var(--c-ink);
      background: var(--c-fog);
      line-height: 1.75;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font-family: inherit; }
    button { cursor: pointer; border: 0; background: none; }
    :focus-visible { outline: 2px solid var(--c-air); outline-offset: 3px; }
    .container {
      width: min(100% - 32px, var(--container));
      margin-inline: auto;
    }
    .site-header {
      position: relative;
      z-index: 80;
      background: rgba(247, 251, 250, .92);
      border-bottom: 1px solid var(--c-line);
    }
    .header-top {
      background: linear-gradient(90deg, #0C2426, #143A3C);
      color: var(--c-white);
      font-size: 13px;
      height: var(--header-top);
      display: flex;
      align-items: center;
      transition: transform .28s ease, opacity .28s ease, height .28s ease;
    }
    .header-top-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      width: min(100% - 32px, var(--container));
      margin: 0 auto;
    }
    .header-top a { color: var(--c-white); }
    .header-top a:hover { color: var(--c-dawn-soft); }
    .top-meta { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
    .top-meta span, .top-meta a { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
    .mini-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: var(--c-dawn);
      color: #1A1404;
      border-radius: 999px;
      padding: 3px 10px;
      font-weight: 700;
      letter-spacing: .02em;
      font-size: 12px;
    }
    .header-main {
      height: var(--header-main);
      display: flex;
      align-items: center;
      background: rgba(247, 251, 250, .96);
    }
    .header-main-inner {
      width: min(100% - 32px, var(--container));
      margin: 0 auto;
      display: flex;
      align-items: center;
      gap: 18px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 700;
      font-size: 20px;
      letter-spacing: .04em;
      color: var(--c-night);
      flex: 0 0 auto;
    }
    .logo-mark {
      width: 38px; height: 38px; border-radius: 12px;
      background: var(--grad);
      display: grid; place-items: center;
      color: #fff; box-shadow: 0 8px 18px rgba(18,148,140,.28);
    }
    .site-nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
    .site-nav a {
      position: relative;
      padding: 10px 12px;
      color: var(--c-ink);
      font-weight: 500;
      font-size: 15px;
      border-radius: 10px;
      min-height: 44px;
      display: inline-flex;
      align-items: center;
      transition: color .2s ease, background .2s ease;
    }
    .site-nav a:hover { color: var(--c-air-deep); background: rgba(18,148,140,.08); }
    .site-nav a.is-active { color: var(--c-air-deep); }
    .site-nav a.is-active::after {
      content: "";
      position: absolute;
      left: 12px; right: 12px; bottom: 6px;
      height: 2px;
      border-radius: 2px;
      background: linear-gradient(90deg, var(--c-air), var(--c-blade), var(--c-dawn));
    }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 0 18px; border-radius: 999px;
      font-weight: 650; letter-spacing: .04em; transition: .22s ease;
    }
    .btn-primary {
      color: #fff;
      background: var(--grad);
      background-size: 140% 140%;
      box-shadow: 0 10px 22px rgba(18,148,140,.28);
    }
    .btn-primary:hover { transform: translateY(-3px); background-position: 100% 50%; box-shadow: var(--shadow-hover); }
    .btn-primary:active { transform: translateY(-1px); }
    .btn-ghost {
      color: var(--c-air-deep);
      border: 1px solid var(--c-air);
      background: transparent;
    }
    .btn-ghost:hover { background: rgba(18,148,140,.12); transform: translateY(-2px); }
    .btn-dawn { background: var(--c-dawn); color: #1A1404; }
    .btn-dawn:hover { transform: translateY(-3px); box-shadow: 0 10px 22px rgba(200,146,26,.28); }
    .nav-cta { margin-left: 8px; }
    .menu-toggle {
      display: none;
      width: 44px; height: 44px; border-radius: 12px;
      border: 1px solid var(--c-line);
      align-items: center; justify-content: center;
      color: var(--c-night);
    }
    .site-header.is-scrolled { position: sticky; top: 0; box-shadow: 0 8px 24px rgba(12,36,38,.08); }
    .site-header.is-scrolled .header-top {
      height: 0; opacity: 0; overflow: hidden; transform: translateY(-100%);
    }
    .drawer-mask {
      display: none; position: fixed; inset: 0; background: rgba(12,36,38,.45); z-index: 70;
    }
    body.nav-open { overflow: hidden; }
    body.nav-open .drawer-mask { display: block; }
    .badge {
      display: inline-flex; align-items: center; gap: 4px;
      border-radius: 999px; padding: 4px 10px;
      font-size: 12px; font-weight: 700; letter-spacing: .02em;
      background: var(--c-air); color: #fff;
    }
    .badge-dawn { background: var(--c-dawn); color: #1A1404; }
    .badge-fog { background: rgba(255,255,255,.14); color: #fff; border: 1px solid rgba(255,255,255,.18); }
    .badge-line { background: #E7F4F0; color: var(--c-air-deep); }
    main { display: block; }
    .hero {
      position: relative;
      min-height: 88vh;
      color: var(--c-white);
      overflow: hidden;
    }
    .hero-slides { position: absolute; inset: 0; }
    .hero-slide {
      position: absolute; inset: 0; opacity: 0; transform: scale(1.04);
      transition: opacity .7s ease, transform 6s ease;
      background-size: cover; background-position: center;
    }
    .hero-slide.is-on { opacity: 1; transform: scale(1); }
    .hero-slide::after {
      content: "";
      position: absolute; inset: 0;
      background:
        linear-gradient(90deg, rgba(12,36,38,.88) 0%, rgba(12,36,38,.62) 48%, rgba(20,58,60,.28) 100%),
        linear-gradient(180deg, rgba(12,36,38,.2) 0%, rgba(12,36,38,.55) 100%);
    }
    .hero-content {
      position: relative; z-index: 2;
      min-height: 88vh;
      display: grid;
      align-items: center;
      padding: 48px 0 72px;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.25fr) minmax(280px, .85fr);
      gap: 28px;
      align-items: stretch;
    }
    .hero-panel, .rank-panel {
      background: linear-gradient(180deg, rgba(12,36,38,.55), rgba(20,58,60,.42));
      border: 1px solid rgba(255,255,255,.12);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      box-shadow: 0 20px 50px rgba(0,0,0,.18);
    }
    .brand-chip {
      display: inline-flex; align-items: center; gap: 8px;
      padding: 6px 12px; border-radius: 999px;
      background: rgba(18,148,140,.2); color: #D7F3EE;
      font-size: 13px; font-weight: 600; margin-bottom: 16px;
    }
    .hero h1, .hero-heading {
      margin: 0 0 14px;
      font-size: clamp(28px, 4vw, 46px);
      line-height: 1.22;
      letter-spacing: .04em;
      font-weight: 700;
    }
    .hero-lead {
      margin: 0 0 22px;
      color: #DDE7E4;
      font-size: 16px;
      max-width: 42em;
    }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 22px; }
    .topic-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
    .topic-cloud a {
      border: 1px solid rgba(255,255,255,.16);
      background: rgba(255,255,255,.06);
      color: #E7F4F0;
      border-radius: 999px;
      padding: 6px 12px;
      font-size: 13px;
      min-height: 36px;
      display: inline-flex; align-items: center;
      transition: .2s ease;
    }
    .topic-cloud a:hover { background: rgba(18,148,140,.28); border-color: var(--c-air); }
    .rank-panel h3 { margin: 0 0 6px; font-size: 18px; }
    .rank-desc { margin: 0 0 16px; color: #C9D6D3; font-size: 13px; }
    .rank-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
    .rank-list li {
      display: grid;
      grid-template-columns: 28px 1fr auto;
      gap: 10px;
      align-items: center;
      padding: 10px 12px;
      border-radius: 14px;
      background: rgba(255,255,255,.05);
    }
    .rank-num {
      width: 28px; height: 28px; border-radius: 8px;
      display: grid; place-items: center;
      background: var(--c-air); color: #fff; font-weight: 700; font-family: var(--mono); font-size: 12px;
    }
    .rank-list li:nth-child(1) .rank-num { background: var(--c-dawn); color: #1A1404; }
    .rank-val { font-family: var(--mono); font-weight: 700; color: var(--c-dawn-soft); }
    .hero-nav {
      position: absolute; z-index: 3; left: 0; right: 0; bottom: 22px;
      display: flex; align-items: center; justify-content: center; gap: 14px;
    }
    .hero-arrow {
      width: 44px; height: 44px; border-radius: 50%;
      border: 1px solid rgba(255,255,255,.25);
      color: #fff; background: rgba(12,36,38,.35);
      display: grid; place-items: center;
    }
    .hero-arrow:hover { background: var(--c-air); }
    .hero-dots { display: flex; gap: 8px; }
    .hero-dots button {
      width: 10px; height: 10px; border-radius: 999px;
      background: rgba(255,255,255,.35);
    }
    .hero-dots button.is-on { width: 26px; background: var(--c-dawn); }
    .section {
      padding: 104px 0;
      position: relative;
    }
    .section h2 {
      margin: 0 0 12px;
      font-size: clamp(24px, 3vw, 36px);
      line-height: 1.28;
      letter-spacing: .03em;
    }
    .section-lead {
      margin: 0 0 36px;
      color: var(--c-muted);
      max-width: 46em;
      font-size: 16px;
    }
    .bg-paper { background: var(--c-paper); }
    .bg-fog { background: var(--c-fog); }
    .split {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 48px;
      align-items: center;
    }
    .media-frame {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow);
      position: relative;
    }
    .media-frame img { width: 100%; height: 100%; object-fit: cover; min-height: 420px; }
    .param-board {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-top: 22px;
    }
    .param-item {
      background: #fff;
      border: 1px solid var(--c-line);
      border-radius: 16px;
      padding: 14px 16px;
    }
    .param-item dt { color: var(--c-muted); font-size: 13px; margin: 0 0 4px; }
    .param-item dd { margin: 0; font-weight: 700; font-family: var(--mono); color: var(--c-night); }
    .check-list { margin: 18px 0 0; padding: 0; list-style: none; display: grid; gap: 8px; }
    .check-list li { display: flex; gap: 8px; align-items: flex-start; }
    .check-list i { color: var(--c-air); margin-top: 5px; }
    .mix-grid {
      display: grid;
      grid-template-columns: 1.35fr 1fr 1fr;
      grid-template-areas:
        "a b c"
        "a d e"
        "f d e";
      gap: 18px;
    }
    .card {
      background: #fff;
      border-radius: var(--radius);
      border: 1px solid var(--c-line);
      box-shadow: var(--shadow);
      padding: 24px;
      transition: transform .22s ease, box-shadow .22s ease;
    }
    .card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
    .card:hover .badge { filter: brightness(1.08); }
    .cap-card { min-height: 210px; display: flex; flex-direction: column; gap: 10px; }
    .cap-a { grid-area: a; background: linear-gradient(160deg, #0E7A74, #2F8F5B); color: #fff; border: 0; }
    .cap-a p, .cap-a .muted { color: #E7F4F0; }
    .cap-b { grid-area: b; } .cap-c { grid-area: c; } .cap-d { grid-area: d; } .cap-e { grid-area: e; } .cap-f { grid-area: f; }
    .icon-blob {
      width: 48px; height: 48px; border-radius: 16px;
      display: grid; place-items: center;
      background: #E7F4F0; color: var(--c-air-deep); font-size: 20px;
    }
    .cap-a .icon-blob { background: rgba(255,255,255,.16); color: #fff; }
    .muted { color: var(--c-muted); margin: 0; }
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }
    .product-card { padding: 0; overflow: hidden; }
    .product-card img { width: 100%; height: 220px; object-fit: cover; }
    .product-body { padding: 22px; }
    .spec-list { margin: 12px 0 18px; padding: 0; list-style: none; display: grid; gap: 6px; color: var(--c-muted); }
    .spec-list li { display: flex; justify-content: space-between; gap: 12px; border-bottom: 1px dashed var(--c-line); padding-bottom: 6px; }
    .scene-rail {
      display: grid;
      grid-template-columns: 280px 1fr;
      gap: 18px;
    }
    .scene-pin {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 14px;
    }
    .scene-card {
      position: relative; overflow: hidden; min-height: 210px; color: #fff; padding: 20px;
      display: flex; flex-direction: column; justify-content: flex-end;
      background-size: cover; background-position: center;
    }
    .scene-card::before {
      content: ""; position: absolute; inset: 0;
      background: linear-gradient(180deg, rgba(12,36,38,.1), rgba(12,36,38,.78));
    }
    .scene-card > * { position: relative; z-index: 1; }
    .gallery-stage {
      display: grid;
      grid-template-columns: 1.7fr .9fr;
      gap: 18px;
    }
    .gallery-main {
      border-radius: var(--radius-lg); overflow: hidden; min-height: 460px; position: relative;
    }
    .gallery-main img { width: 100%; height: 520px; object-fit: cover; }
    .gallery-caption {
      position: absolute; left: 16px; right: 16px; bottom: 16px;
      background: rgba(12,36,38,.72); color: #fff; border-radius: 16px; padding: 12px 16px;
    }
    .thumbs { display: grid; gap: 12px; }
    .thumbs button {
      display: grid; grid-template-columns: 92px 1fr; gap: 10px; text-align: left;
      background: #fff; border: 1px solid var(--c-line); border-radius: 16px; overflow: hidden;
      min-height: 88px; padding: 0;
    }
    .thumbs button.is-on { border-color: var(--c-air); box-shadow: 0 0 0 2px rgba(18,148,140,.2); }
    .thumbs img { width: 92px; height: 88px; object-fit: cover; }
    .thumbs span { padding: 10px 10px 10px 0; font-size: 14px; color: var(--c-ink); }
    .dark-band {
      background: linear-gradient(180deg, var(--c-night), var(--c-night-2));
      color: var(--c-white);
      overflow: hidden;
    }
    .dark-band::before {
      content: "";
      position: absolute; inset: 0;
      background-image: radial-gradient(circle at 20% 20%, rgba(18,148,140,.18), transparent 28%),
        linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px),
        linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px);
      background-size: auto, 42px 42px, 42px 42px;
      opacity: .55;
      pointer-events: none;
    }
    .case-grid { display: grid; grid-template-columns: 1.2fr .9fr .9fr; gap: 18px; position: relative; }
    .case-card {
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(255,255,255,.1);
      border-radius: var(--radius);
      padding: 26px;
    }
    .big-num { font-family: var(--mono); font-size: 42px; color: var(--c-dawn-soft); line-height: 1; margin: 10px 0; }
    .price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; align-items: stretch; }
    .price-card { padding: 28px 24px; position: relative; }
    .price-card.featured {
      background: linear-gradient(180deg, #0E7A74, #143A3C);
      color: #fff; border: 0; transform: translateY(-8px);
    }
    .price-card.featured .muted, .price-card.featured li { color: #D7E8E4; }
    .price-unit { font-family: var(--mono); font-size: 28px; font-weight: 700; margin: 8px 0 16px; }
    .inc-list { margin: 0 0 18px; padding: 0; list-style: none; display: grid; gap: 8px; }
    .compare-wrap { margin-top: 28px; overflow-x: auto; }
    .compare-table { width: 100%; border-collapse: collapse; min-width: 720px; background: #fff; border-radius: 20px; overflow: hidden; }
    .compare-table th, .compare-table td { padding: 14px 16px; border-bottom: 1px solid var(--c-line); text-align: left; }
    .compare-table th { background: #E7F4F0; color: var(--c-night); }
    .story-track {
      display: grid;
      grid-auto-flow: column;
      grid-auto-columns: minmax(78%, 520px);
      gap: 18px;
      overflow-x: auto;
      scroll-snap-type: x mandatory;
      padding-bottom: 8px;
    }
    .story-card {
      scroll-snap-align: start;
      display: grid; grid-template-columns: 180px 1fr; gap: 0; padding: 0; overflow: hidden;
    }
    .story-card img { width: 100%; height: 100%; min-height: 220px; object-fit: cover; }
    .story-body { padding: 22px; }
    .stats-bar {
      display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px;
    }
    .stat-item {
      background: #fff; border-radius: 20px; padding: 22px 12px; text-align: center; border: 1px solid var(--c-line);
    }
    .stat-num { font-family: var(--mono); font-size: 30px; font-weight: 700; color: var(--c-air-deep); font-variant-numeric: tabular-nums; }
    .stat-item span { display: block; color: var(--c-muted); font-size: 13px; margin-top: 4px; }
    .review-wall {
      columns: 2; column-gap: 16px;
    }
    .review-card {
      break-inside: avoid;
      margin-bottom: 16px;
      padding: 20px;
    }
    .review-role { color: var(--c-air-deep); font-size: 13px; font-weight: 700; }
    .logo-strip {
      display: flex; flex-wrap: wrap; gap: 10px;
    }
    .logo-pill {
      background: #fff; border: 1px solid var(--c-line); border-radius: 999px;
      padding: 10px 16px; color: var(--c-muted); font-weight: 600;
    }
    .news-layout {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 18px;
    }
    .news-feature { padding: 0; overflow: hidden; }
    .news-feature img { width: 100%; height: 280px; object-fit: cover; }
    .news-feature div { padding: 22px; }
    .news-list { display: grid; gap: 12px; }
    .news-item {
      display: grid; grid-template-columns: 120px 1fr; gap: 12px; padding: 0; overflow: hidden;
    }
    .news-item img { width: 120px; height: 92px; object-fit: cover; }
    .news-item div { padding: 12px 14px 12px 0; }
    .faq-list { display: grid; gap: 10px; }
    .faq-item { background: #fff; border-radius: 18px; border: 1px solid var(--c-line); overflow: hidden; }
    .faq-item button {
      width: 100%; text-align: left; padding: 16px 18px; min-height: 52px;
      display: flex; justify-content: space-between; gap: 12px; align-items: center;
      font-weight: 700; color: var(--c-night);
    }
    .faq-item button i { color: var(--c-air); }
    .faq-item .faq-a { display: none; padding: 0 18px 16px; color: var(--c-muted); }
    .faq-item.is-open .faq-a { display: block; }
    .cta-band {
      background:
        linear-gradient(120deg, rgba(12,36,38,.88), rgba(18,148,140,.72)),
        url('/assets/images/cd191e41da5acb96.jpg') center/cover;
      color: #fff;
    }
    .cta-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 24px; align-items: stretch; }
    .form-card {
      background: #fff; color: var(--c-ink); border-radius: var(--radius-lg); padding: 28px;
      box-shadow: var(--shadow);
    }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .form-grid .full { grid-column: 1 / -1; }
    label { display: block; font-size: 13px; font-weight: 700; margin-bottom: 6px; }
    input, select, textarea {
      width: 100%; border: 1px solid var(--c-line); border-radius: 12px;
      min-height: 44px; padding: 10px 12px; background: #F8FBFA; color: var(--c-ink);
    }
    textarea { min-height: 96px; resize: vertical; }
    input:focus, select:focus, textarea:focus { border-color: var(--c-air); box-shadow: 0 0 0 3px rgba(18,148,140,.15); outline: none; }
    .form-msg { margin-bottom: 12px; padding: 10px 12px; border-radius: 12px; }
    .form-msg.ok { background: #E7F4F0; color: var(--c-air-deep); }
    .form-msg.err { background: #FDECEC; color: #9B2C2C; }
    .map-box {
      border-radius: 20px; min-height: 180px; margin-top: 16px;
      background:
        linear-gradient(180deg, rgba(12,36,38,.15), rgba(12,36,38,.45)),
        url('/assets/images/76f9ae40a9ccff54.jpg') center/cover;
      display: flex; align-items: flex-end; padding: 14px;
    }
    .map-box span { background: rgba(12,36,38,.72); border-radius: 12px; padding: 8px 12px; font-size: 13px; }
    .site-footer {
      background: linear-gradient(180deg, #0C2426, #08181A);
      color: #D7E3E0;
      padding: 56px 0 24px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr .8fr .9fr;
      gap: 28px;
      margin-bottom: 28px;
    }
    .footer-brand { font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 10px; }
    .footer-grid a { color: #D7E3E0; }
    .footer-grid a:hover { color: var(--c-dawn-soft); }
    .foot-links { display: grid; gap: 8px; }
    .copy-line { border-top: 1px solid rgba(255,255,255,.08); padding-top: 16px; font-size: 13px; color: #8B97A1; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
    @media (max-width: 1440px) {
      .mix-grid { grid-template-columns: 1.2fr 1fr 1fr; }
    }
    @media (max-width: 1024px) {
      .hero-grid, .split, .scene-rail, .gallery-stage, .case-grid, .price-grid, .cta-grid, .news-layout, .footer-grid, .stats-bar {
        grid-template-columns: 1fr 1fr;
      }
      .stats-bar { grid-template-columns: repeat(3, 1fr); }
      .mix-grid { grid-template-columns: 1fr 1fr; grid-template-areas: "a a" "b c" "d e" "f f"; }
      .product-grid { grid-template-columns: 1fr 1fr; }
      .product-grid .product-card:last-child { grid-column: 1 / -1; }
      .nav-cta { display: none; }
      .menu-toggle { display: inline-flex; margin-left: auto; }
      .site-nav {
        position: fixed; top: 0; right: 0; width: min(86vw, 360px); height: 100vh;
        background: #FBFFFD; flex-direction: column; align-items: stretch;
        padding: 84px 20px 24px; gap: 6px;
        transform: translateX(110%); transition: transform .28s ease;
        box-shadow: -16px 0 40px rgba(12,36,38,.18); z-index: 85;
      }
      body.nav-open .site-nav { transform: translateX(0); }
      .site-nav a { min-height: 48px; }
      .header-main { position: relative; z-index: 90; }
      .case-grid, .cta-grid, .news-layout, .footer-grid, .split, .scene-rail, .gallery-stage { grid-template-columns: 1fr; }
    }
    @media (max-width: 768px) {
      .section { padding: 64px 0; }
      .hero, .hero-content { min-height: 70vh; }
      .hero-grid, .product-grid, .price-grid, .stats-bar, .param-board, .form-grid, .scene-pin {
        grid-template-columns: 1fr;
      }
      .mix-grid { grid-template-columns: 1fr; grid-template-areas: "a" "b" "c" "d" "e" "f"; }
      .review-wall { columns: 1; }
      .story-card { grid-template-columns: 1fr; }
      .story-card img { height: 180px; min-height: 0; }
      .header-top-inner { justify-content: flex-start; overflow: auto; }
      .mini-badge { display: none; }
      .gallery-main img { height: 280px; }
      .rank-panel { order: 2; }
      .copy-line { flex-direction: column; }
    }
    @media (max-width: 520px) {
      .container { width: min(100% - 24px, var(--container)); }
      .hero-panel, .rank-panel, .form-card { padding: 20px 16px; }
      .hero-actions .btn { width: 100%; }
      .top-meta { gap: 10px; }
      .logo { font-size: 17px; }
      .thumbs button { grid-template-columns: 72px 1fr; }
      .news-item { grid-template-columns: 88px 1fr; }
      .news-item img { width: 88px; height: 76px; }
    }

/* roulang page: index */
:root {
      --c-air: #12948C;
      --c-air-deep: #0E7A74;
      --c-air-soft: #E6F5F3;
      --c-blade: #2F8F5B;
      --c-dawn: #C8921A;
      --c-dawn-soft: #F4E4B8;
      --c-tower: #8B97A1;
      --c-mist: #F2F6F4;
      --c-night: #0C2426;
      --c-night-2: #143A3C;
      --c-ink: #163033;
      --c-muted: #5B6B6D;
      --c-line: #D5E2DC;
      --c-white: #F8FBFA;
      --radius: 24px;
      --radius-sm: 14px;
      --shadow: 0 12px 32px rgba(12, 36, 38, 0.08);
      --shadow-hover: 0 18px 40px rgba(18, 148, 140, 0.16);
      --container: 1220px;
      --nav-h: 72px;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    html, body { max-width: 100%; overflow-x: clip; }
    body {
      margin: 0;
      color: var(--c-ink);
      background: var(--c-mist);
      font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
      font-size: 16px;
      line-height: 1.75;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--c-air-deep); text-decoration: none; transition: color .2s ease, transform .2s ease, box-shadow .2s ease, background .2s ease; }
    a:hover { color: var(--c-blade); }
    button, input, select, textarea { font: inherit; color: inherit; }
    button { cursor: pointer; border: 0; background: none; }
    h1, h2, h3, h4 { margin: 0; line-height: 1.28; color: var(--c-ink); font-weight: 700; letter-spacing: .02em; }
    p { margin: 0; }
    ul { margin: 0; padding: 0; list-style: none; }
    :focus-visible { outline: 3px solid rgba(18, 148, 140, .45); outline-offset: 3px; }
    .wrap { width: min(var(--container), calc(100% - 32px)); margin: 0 auto; }
    .mono { font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace; font-variant-numeric: tabular-nums; }
    .site-header { position: relative; z-index: 50; }
    .topbar {
      background: linear-gradient(90deg, #0C2426 0%, #143A3C 55%, #0F2E30 100%);
      color: #E7F3F0;
      font-size: 13px;
      transition: transform .28s ease, opacity .28s ease;
    }
    .topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 40px; }
    .topbar a { color: #E7F3F0; }
    .topbar a:hover { color: var(--c-dawn-soft); }
    .top-meta { display: flex; flex-wrap: wrap; gap: 8px 18px; align-items: center; }
    .navbar {
      background: #F8FBFA;
      border-bottom: 1px solid var(--c-line);
      min-height: var(--nav-h);
    }
    .navbar.is-stick {
      position: sticky;
      top: 0;
      z-index: 60;
      box-shadow: 0 8px 24px rgba(12, 36, 38, .08);
    }
    .nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 18px; min-height: var(--nav-h); }
    .logo {
      display: flex; align-items: center; gap: 10px;
      color: var(--c-night); font-weight: 800; font-size: 20px; letter-spacing: .04em; white-space: nowrap;
    }
    .logo:hover { color: var(--c-air-deep); }
    .logo-mark {
      width: 36px; height: 36px; border-radius: 12px;
      background: linear-gradient(135deg, var(--c-air), var(--c-blade));
      display: grid; place-items: center; box-shadow: 0 8px 16px rgba(18, 148, 140, .28);
    }
    .nav-links { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
    .nav-links a {
      position: relative; color: var(--c-ink); padding: 10px 12px; border-radius: 10px; font-size: 15px; font-weight: 600;
    }
    .nav-links a:hover { color: var(--c-air-deep); background: var(--c-air-soft); }
    .nav-links a.is-active { color: var(--c-air-deep); }
    .nav-links a.is-active::after {
      content: ""; position: absolute; left: 12px; right: 12px; bottom: 4px; height: 3px; border-radius: 99px;
      background: linear-gradient(90deg, var(--c-air), var(--c-blade) 55%, var(--c-dawn));
    }
    .nav-cta { display: flex; align-items: center; gap: 10px; }
    .menu-btn {
      display: none; width: 44px; height: 44px; border-radius: 12px; border: 1px solid var(--c-line);
      align-items: center; justify-content: center; flex-direction: column; gap: 5px;
    }
    .menu-btn span { width: 18px; height: 2px; background: var(--c-ink); border-radius: 2px; }
    .drawer {
      display: none; position: absolute; left: 0; right: 0; top: 100%;
      background: #F8FBFA; border-bottom: 1px solid var(--c-line);
      box-shadow: var(--shadow); padding: 12px 16px 20px;
    }
    .drawer a {
      display: flex; align-items: center; min-height: 44px; padding: 8px 12px; border-radius: 12px;
      color: var(--c-ink); font-weight: 600;
    }
    .drawer a:hover, .drawer a:active { background: var(--c-air-soft); color: var(--c-air-deep); }
    .site-header.is-open .drawer { display: block; }
    .btn, .btn-main, .btn-line {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 10px 20px; border-radius: 999px; font-weight: 700; letter-spacing: .02em;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease, border-color .2s ease;
    }
    .btn-main {
      color: #fff !important;
      background: linear-gradient(90deg, var(--c-air) 0%, var(--c-blade) 100%);
      background-size: 140% 100%;
      box-shadow: 0 10px 20px rgba(18, 148, 140, .28);
    }
    .btn-main:hover { transform: translateY(-3px); background-position: 100% 0; box-shadow: var(--shadow-hover); color: #fff !important; }
    .btn-main:active { transform: translateY(-1px); }
    .btn-line {
      color: var(--c-air-deep) !important; border: 1.5px solid var(--c-air); background: transparent;
    }
    .btn-line:hover { background: #E7F6EE; transform: translateY(-2px); }
    .badge-data {
      display: inline-flex; align-items: center; gap: 6px;
      padding: 4px 10px; border-radius: 999px; font-size: 12px; font-weight: 700; line-height: 1.3;
    }
    .badge-air { background: var(--c-air); color: #fff; }
    .badge-dawn { background: var(--c-dawn); color: #1B1403; }
    .badge-mist { background: rgba(232, 244, 238, .92); color: var(--c-air-deep); }
    .badge-night { background: rgba(255,255,255,.12); color: #F4E4B8; border: 1px solid rgba(244,228,184,.25); }
    main { display: block; }
    .section-block { padding: 108px 0; }
    .section-block.alt { background: #EAF2EE; }
    .section-kicker { color: var(--c-air-deep); font-weight: 700; font-size: 13px; letter-spacing: .18em; text-transform: uppercase; margin-bottom: 10px; }
    .section-head { max-width: 760px; margin-bottom: 36px; }
    .section-head h2 { font-size: clamp(24px, 3vw, 36px); margin-bottom: 14px; }
    .section-head p { color: var(--c-muted); font-size: 16px; }
    .hero-stage {
      position: relative; min-height: 88vh; color: var(--c-white); overflow: hidden; background: var(--c-night);
    }
    .hero-slides { position: absolute; inset: 0; }
    .hero-slides img {
      position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
      opacity: 0; transform: scale(1.06); transition: opacity .7s ease, transform 6s ease;
    }
    .hero-slides img.is-on { opacity: 1; transform: scale(1); }
    .hero-mask {
      position: absolute; inset: 0;
      background:
        linear-gradient(90deg, rgba(12,36,38,.88) 0%, rgba(12,36,38,.55) 46%, rgba(20,58,60,.28) 100%),
        linear-gradient(180deg, rgba(12,36,38,.2) 0%, rgba(12,36,38,.72) 100%);
    }
    .hero-content { position: relative; z-index: 2; padding: 34px 0 42px; min-height: 88vh; display: flex; flex-direction: column; justify-content: flex-end; }
    .hero-panel {
      display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(280px, .85fr); gap: 22px;
      background: #0C2426; border: 1px solid rgba(139,151,161,.22); border-radius: 28px;
      padding: 28px; box-shadow: 0 24px 50px rgba(0,0,0,.28);
    }
    .brand-chip { display: inline-flex; align-items: center; gap: 8px; color: var(--c-dawn-soft); font-weight: 700; margin-bottom: 12px; }
    .hero-copy h1, .hero-copy h2 { color: #F8FBFA; font-size: clamp(28px, 4vw, 44px); margin-bottom: 14px; }
    .hero-copy .lead { color: #D5E4E0; font-size: 16px; max-width: 640px; margin-bottom: 18px; }
    .hero-copy article { display: none; }
    .hero-copy article.is-on { display: block; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; }
    .hero-entry {
      display: grid; grid-template-columns: 1.2fr 1fr auto; gap: 10px;
      background: #143A3C; border-radius: 16px; padding: 10px;
    }
    .hero-entry input, .hero-entry select, .field input, .field select, .field textarea {
      width: 100%; border: 1px solid var(--c-line); border-radius: 12px; padding: 11px 12px; background: #fff;
    }
    .hero-entry input, .hero-entry select { background: #0F2C2E; border-color: rgba(139,151,161,.3); color: #F8FBFA; min-height: 44px; }
    .hero-rank {
      background: linear-gradient(180deg, #143A3C, #102C2E);
      border-radius: 20px; padding: 16px 16px 10px; border: 1px solid rgba(200,146,26,.22);
    }
    .hero-rank h3 { color: #F4E4B8; font-size: 15px; margin-bottom: 10px; }
    .rank-item {
      display: grid; grid-template-columns: 28px 1fr auto; gap: 8px; align-items: center;
      padding: 8px 0; border-bottom: 1px dashed rgba(139,151,161,.25); color: #E7F3F0; font-size: 13px;
    }
    .rank-item:last-child { border-bottom: 0; }
    .rank-no { color: var(--c-dawn); font-weight: 800; }
    .hero-controls { display: flex; align-items: center; justify-content: space-between; margin-top: 16px; }
    .dots { display: flex; gap: 8px; }
    .dots button, .arrow {
      width: 44px; height: 44px; border-radius: 50%; border: 1px solid rgba(255,255,255,.2); color: #fff;
      display: grid; place-items: center;
    }
    .dots button { width: 12px; height: 12px; background: rgba(255,255,255,.35); }
    .dots button.is-on { width: 28px; border-radius: 999px; background: linear-gradient(90deg, var(--c-air), var(--c-dawn)); }
    .arrow:hover { background: rgba(18,148,140,.35); }
    .split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; }
    .spec-board {
      display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 22px;
    }
    .spec-board div {
      background: #fff; border-radius: 16px; padding: 14px 16px; border: 1px solid var(--c-line);
    }
    .spec-board b { display: block; font-size: 18px; color: var(--c-air-deep); }
    .spec-board span { color: var(--c-muted); font-size: 13px; }
    .media-frame { position: relative; border-radius: 28px; overflow: hidden; box-shadow: var(--shadow); }
    .media-frame img { width: 100%; height: 520px; object-fit: cover; }
    .float-tag {
      position: absolute; left: 16px; bottom: 16px; background: #0C2426; color: #fff;
      border-radius: 16px; padding: 12px 14px; max-width: 230px;
    }
    .cap-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; grid-template-rows: auto auto; gap: 18px; }
    .card-round {
      background: #fff; border-radius: 24px; padding: 22px; border: 1px solid var(--c-line);
      box-shadow: var(--shadow); transition: transform .2s ease, box-shadow .2s ease;
    }
    .card-round:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
    .card-round:hover .badge-data { filter: brightness(1.08); }
    .cap-grid .feat { grid-row: span 2; background: linear-gradient(180deg, #F8FBFA, #E7F4F0); }
    .icon-blob {
      width: 52px; height: 52px; border-radius: 16px; display: grid; place-items: center; margin-bottom: 14px;
      background: var(--c-air-soft); color: var(--c-air-deep);
    }
    .card-round h3 { font-size: 20px; margin: 10px 0 8px; }
    .card-round p { color: var(--c-muted); font-size: 15px; }
    .product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
    .product-card { padding: 0; overflow: hidden; }
    .product-card img { height: 230px; width: 100%; object-fit: cover; }
    .product-body { padding: 20px; }
    .spec-list { margin: 12px 0 16px; display: grid; gap: 8px; }
    .spec-list li { display: flex; justify-content: space-between; gap: 10px; color: var(--c-muted); font-size: 14px; border-bottom: 1px dashed var(--c-line); padding-bottom: 6px; }
    .scene-rail { display: grid; grid-template-columns: 1.3fr 1fr 1fr; grid-auto-rows: 220px; gap: 16px; }
    .scene-card {
      position: relative; border-radius: 24px; overflow: hidden; min-height: 220px; color: #fff;
    }
    .scene-card img { width: 100%; height: 100%; object-fit: cover; }
    .scene-card.wide { grid-row: span 2; min-height: 456px; }
    .scene-card figcaption {
      position: absolute; inset: auto 0 0 0; padding: 18px;
      background: linear-gradient(180deg, transparent, rgba(12,36,38,.88));
    }
    .scene-card h3 { color: #fff; font-size: 20px; margin-bottom: 6px; }
    .gallery {
      display: grid; grid-template-columns: 1.7fr .9fr; gap: 18px;
    }
    .gallery-main { border-radius: 28px; overflow: hidden; min-height: 460px; background: #0C2426; }
    .gallery-main img { width: 100%; height: 460px; object-fit: cover; }
    .thumbs { display: grid; gap: 10px; }
    .thumbs button { border-radius: 18px; overflow: hidden; border: 2px solid transparent; padding: 0; }
    .thumbs button.is-on { border-color: var(--c-air); }
    .thumbs img { width: 100%; height: 108px; object-fit: cover; }
    .dark-band {
      padding: 108px 0; color: #F8FBFA;
      background:
        linear-gradient(180deg, rgba(12,36,38,.92), rgba(20,58,60,.9)),
        repeating-linear-gradient(115deg, rgba(255,255,255,.028) 0 1px, transparent 1px 18px),
        linear-gradient(135deg, #0C2426, #143A3C 55%, #0C2426);
    }
    .dark-band h2, .dark-band p { color: #F8FBFA; }
    .dark-band .section-head p { color: #C9D8D4; }
    .case-grid { display: grid; grid-template-columns: 1.2fr .9fr .9fr; gap: 18px; }
    .case-card { background: rgba(255,255,255,.04); border: 1px solid rgba(139,151,161,.2); border-radius: 24px; padding: 24px; }
    .case-card .num { font-size: clamp(36px, 5vw, 56px); color: var(--c-dawn-soft); line-height: 1; margin: 12px 0; }
    .price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .price-card { position: relative; }
    .price-card.hot { border: 2px solid var(--c-air); background: linear-gradient(180deg, #F8FBFA, #E8F6F1); }
    .price { font-size: 28px; color: var(--c-air-deep); margin: 8px 0 4px; }
    .include { display: grid; gap: 8px; margin: 16px 0; }
    .include li { padding-left: 18px; position: relative; color: var(--c-muted); font-size: 14px; }
    .include li::before { content: ""; position: absolute; left: 0; top: 9px; width: 8px; height: 8px; border-radius: 50%; background: var(--c-blade); }
    .rights-table { width: 100%; border-collapse: separate; border-spacing: 0; margin-top: 28px; background: #fff; border-radius: 20px; overflow: hidden; box-shadow: var(--shadow); }
    .rights-table th, .rights-table td { padding: 14px 16px; text-align: center; border-bottom: 1px solid var(--c-line); font-size: 14px; }
    .rights-table th { background: #143A3C; color: #F8FBFA; font-weight: 700; }
    .rights-table td:first-child, .rights-table th:first-child { text-align: left; }
    .story-rail { display: grid; gap: 22px; }
    .story { display: grid; grid-template-columns: .9fr 1.1fr; gap: 24px; align-items: center; background: #fff; border-radius: 28px; overflow: hidden; box-shadow: var(--shadow); }
    .story:nth-child(even) { grid-template-columns: 1.1fr .9fr; }
    .story:nth-child(even) img { order: 2; }
    .story img { width: 100%; height: 280px; object-fit: cover; }
    .story-body { padding: 24px; }
    .stats-row {
      display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px;
      background: #fff; border-radius: 28px; padding: 22px; box-shadow: var(--shadow);
    }
    .stat { text-align: center; padding: 10px; }
    .stat b { display: block; font-size: 34px; color: var(--c-air-deep); line-height: 1.1; }
    .stat span { color: var(--c-muted); font-size: 13px; }
    .quote-wall { display: grid; grid-template-columns: 1.2fr .9fr 1fr; gap: 16px; }
    .quote-card { background: #fff; border-radius: 22px; padding: 20px; box-shadow: var(--shadow); border: 1px solid var(--c-line); }
    .quote-card:nth-child(2), .quote-card:nth-child(5) { transform: translateY(18px); }
    .quote-card p { color: var(--c-ink); margin-bottom: 12px; }
    .quote-meta { color: var(--c-muted); font-size: 13px; }
    .logo-strip { display: flex; flex-wrap: wrap; gap: 10px; }
    .logo-pill { background: #fff; border-radius: 999px; padding: 10px 16px; border: 1px solid var(--c-line); color: var(--c-ink); font-weight: 700; font-size: 14px; }
    .news-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 16px; }
    .news-card { background: #fff; border-radius: 22px; overflow: hidden; box-shadow: var(--shadow); }
    .news-card img { height: 170px; width: 100%; object-fit: cover; }
    .news-card .pad { padding: 16px; }
    .news-card h3 { font-size: 18px; margin-bottom: 8px; }
    .faq-list { display: grid; gap: 10px; }
    .faq-item { background: #fff; border-radius: 18px; border: 1px solid var(--c-line); overflow: hidden; }
    .faq-item button { width: 100%; text-align: left; padding: 16px 18px; min-height: 56px; font-weight: 700; display: flex; justify-content: space-between; gap: 12px; }
    .faq-item .ans { display: none; padding: 0 18px 16px; color: var(--c-muted); }
    .faq-item.open .ans { display: block; }
    .cta-band { padding: 96px 0; background: linear-gradient(180deg, #EAF2EE, #F2F6F4); }
    .cta-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 28px; align-items: stretch; }
    .cta-copy { background: linear-gradient(160deg, #0C2426, #1A4A46); color: #F8FBFA; border-radius: 28px; padding: 32px; }
    .cta-copy h2 { color: #fff; margin-bottom: 12px; }
    .form-card { background: #fff; border-radius: 28px; padding: 28px; box-shadow: var(--shadow); }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .field { display: grid; gap: 6px; }
    .field label { font-size: 13px; font-weight: 700; }
    .field-full { grid-column: 1 / -1; }
    .form-note { color: var(--c-muted); font-size: 13px; margin-top: 10px; }
    .alert { border-radius: 14px; padding: 12px 14px; margin-bottom: 12px; font-weight: 600; }
    .alert.ok { background: #E7F6EE; color: #1E6B40; }
    .alert.err { background: #FDECEC; color: #9B2C2C; }
    .site-footer { background: #0C2426; color: #D5E4E0; padding: 56px 0 24px; }
    .foot-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 28px; margin-bottom: 28px; }
    .site-footer h3 { color: #F8FBFA; font-size: 18px; margin-bottom: 12px; }
    .site-footer a { color: #D5E4E0; display: inline-block; min-height: 36px; }
    .site-footer a:hover { color: var(--c-dawn-soft); }
    .copy { border-top: 1px solid rgba(139,151,161,.2); padding-top: 16px; font-size: 13px; color: #8B97A1; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
    .map-box { border-radius: 18px; min-height: 120px; background:
      linear-gradient(180deg, rgba(18,148,140,.15), rgba(12,36,38,.2)),
      repeating-linear-gradient(90deg, rgba(139,151,161,.12) 0 12px, transparent 12px 24px),
      #143A3C; padding: 16px; }
    .tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
    .tags a { background: #fff; border: 1px solid var(--c-line); border-radius: 999px; padding: 8px 12px; min-height: 40px; color: var(--c-ink); font-size: 13px; font-weight: 700; }
    .tags a:hover { border-color: var(--c-air); color: var(--c-air-deep); background: var(--c-air-soft); }
    section[id], .hero-stage { scroll-margin-top: 84px; }
    @media (max-width: 1440px) {
      .wrap { width: min(1180px, calc(100% - 32px)); }
    }
    @media (max-width: 1024px) {
      .section-block, .dark-band, .cta-band { padding: 80px 0; }
      .nav-links { display: none; }
      .menu-btn { display: inline-flex; }
      .hero-panel, .split, .cap-grid, .product-grid, .gallery, .case-grid, .price-grid, .cta-grid, .foot-grid, .news-grid, .quote-wall, .stats-row { grid-template-columns: 1fr 1fr; }
      .cap-grid .feat, .scene-card.wide, .story, .story:nth-child(even), .form-grid { grid-template-columns: 1fr; }
      .scene-rail { grid-template-columns: 1fr 1fr; grid-auto-rows: 200px; }
      .hero-stage, .hero-content { min-height: 78vh; }
      .media-frame img, .gallery-main img, .story img { height: 320px; }
      .quote-card:nth-child(2), .quote-card:nth-child(5) { transform: none; }
    }
    @media (max-width: 768px) {
      .top-meta span:nth-child(2) { display: none; }
      .hero-panel, .hero-entry, .split, .cap-grid, .product-grid, .scene-rail, .gallery, .case-grid, .price-grid, .cta-grid, .foot-grid, .news-grid, .quote-wall, .stats-row, .spec-board { grid-template-columns: 1fr; }
      .hero-stage, .hero-content { min-height: 70vh; }
      .section-block, .dark-band, .cta-band { padding: 64px 0; }
      .hero-rank { order: 2; }
      .scene-card.wide { grid-row: auto; min-height: 220px; }
      .rights-table { display: block; overflow-x: auto; }
      .copy { flex-direction: column; }
    }
    @media (max-width: 520px) {
      .wrap { width: calc(100% - 24px); }
      .logo { font-size: 17px; }
      .hero-panel { padding: 18px; border-radius: 20px; }
      .hero-copy h1, .hero-copy h2 { font-size: 26px; }
      .btn, .btn-main, .btn-line { width: 100%; }
      .hero-actions .btn-main, .hero-actions .btn-line { width: auto; }
      .stats-row { grid-template-columns: 1fr 1fr; }
      .stat b { font-size: 28px; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { transition: none !important; animation: none !important; }
    }