/* roulang page: index */
:root {
      --color-primary: #C45A2B;
      --color-primary-deep: #6B3A22;
      --color-secondary: #6E7C7A;
      --color-accent: #C4A46C;
      --color-bg: #F6F1EA;
      --color-bg-alt: #E7E2DA;
      --color-ink: #1F1A17;
      --color-muted: #5C5854;
      --color-white: #FFFCFA;
      --color-line: rgba(107, 58, 34, 0.14);
      --color-danger: #9B3A2A;
      --gradient-brand: linear-gradient(135deg, #C45A2B 0%, #6B3A22 62%, #C4A46C 140%);
      --gradient-dark: linear-gradient(160deg, #241C18 0%, #3A2A22 100%);
      --shadow-warm: 0 12px 32px rgba(31, 26, 23, 0.1);
      --shadow-hover: 0 16px 36px rgba(31, 26, 23, 0.16);
      --radius-card: 24px;
      --radius-btn: 14px;
      --radius-badge: 999px;
      --header-offset: 118px;
      --space-section: 88px;
      --wrap: 1240px;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: "Noto Sans SC", system-ui, sans-serif;
      font-size: 16px;
      line-height: 1.75;
      color: var(--color-ink);
      background: var(--color-bg);
      overflow-x: hidden;
      padding-bottom: 76px;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font-family: inherit; }
    button { cursor: pointer; }
    h1, h2, h3 { letter-spacing: -0.02em; line-height: 1.28; margin: 0; color: var(--color-ink); }
    p { margin: 0; }
    :focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; }
    .skip-link {
      position: absolute; left: -999px; top: 8px; z-index: 100;
      background: var(--color-primary); color: #fff; padding: 8px 14px; border-radius: 10px;
    }
    .skip-link:focus { left: 12px; }
    .container {
      width: min(100% - 32px, var(--wrap));
      margin-inline: auto;
    }
    .site-header {
      position: sticky; top: 0; z-index: 60;
      background: rgba(246, 241, 234, 0.94);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--color-line);
    }
    .nav-top {
      display: flex; align-items: center; justify-content: space-between; gap: 16px;
      background: #E7E2DA; color: var(--color-ink);
      font-size: 13px; min-height: 38px;
    }
    .nav-top-inner {
      width: min(100% - 32px, var(--wrap));
      margin: 0 auto;
      display: flex; align-items: center; justify-content: space-between; gap: 12px;
      padding: 6px 0;
    }
    .nav-top a.phone {
      color: var(--color-primary-deep); font-weight: 700; font-size: 14px;
    }
    .nav-top a.phone:hover { color: var(--color-primary); }
    .trust-row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
    .micro-badge {
      display: inline-flex; align-items: center; gap: 4px;
      background: #fff; border: 1px solid var(--color-line);
      border-radius: var(--radius-badge); padding: 2px 10px;
      color: var(--color-muted); font-size: 12px;
    }
    .nav-main { min-height: 72px; }
    .nav-main-inner {
      width: min(100% - 32px, var(--wrap));
      margin: 0 auto; min-height: 72px;
      display: flex; align-items: center; justify-content: space-between; gap: 18px;
    }
    .brand {
      display: flex; align-items: center; gap: 10px; flex-shrink: 0;
      font-weight: 800; font-size: 18px; color: var(--color-primary-deep);
    }
    .brand-mark {
      width: 36px; height: 36px; border-radius: 10px;
      background: var(--gradient-brand); display: grid; place-items: center;
      box-shadow: 0 6px 14px rgba(196, 90, 43, 0.28);
    }
    .nav-links { display: flex; align-items: center; gap: 4px; }
    .nav-links a {
      position: relative; padding: 8px 12px; font-size: 15px; font-weight: 500; color: var(--color-ink);
    }
    .nav-links a::after {
      content: ""; position: absolute; left: 12px; right: 12px; bottom: 2px; height: 2px;
      background: var(--color-primary); transform: scaleX(0); transform-origin: left; transition: transform .2s ease;
    }
    .nav-links a:hover, .nav-links a.is-active { color: var(--color-primary-deep); }
    .nav-links a:hover::after, .nav-links a.is-active::after { transform: scaleX(1); }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 0 20px; border-radius: var(--radius-btn);
      font-weight: 700; font-size: 15px; border: 1px solid transparent; transition: .2s ease;
    }
    .btn-primary {
      background: var(--gradient-brand); color: #fff;
      box-shadow: 0 8px 18px rgba(196, 90, 43, 0.28);
    }
    .btn-primary:hover { transform: translateY(-2px); filter: saturate(1.05); }
    .btn-primary:active { transform: translateY(0); }
    .btn-ghost {
      background: #fff; color: var(--color-primary-deep);
      border-color: rgba(196, 90, 43, 0.35);
    }
    .btn-ghost:hover { border-color: var(--color-primary); background: #fff8f3; }
    .btn-brass {
      background: var(--color-accent); color: #241C18; font-weight: 700;
    }
    .btn-brass:hover { filter: brightness(1.05); transform: translateY(-1px); }
    .menu-toggle {
      display: none; width: 44px; height: 44px; border: 1px solid var(--color-line);
      background: #fff; border-radius: 12px; align-items: center; justify-content: center;
    }
    .menu-toggle span, .menu-toggle span::before, .menu-toggle span::after {
      display: block; width: 18px; height: 2px; background: var(--color-ink); position: relative;
    }
    .menu-toggle span::before, .menu-toggle span::after {
      content: ""; position: absolute; left: 0;
    }
    .menu-toggle span::before { top: -6px; }
    .menu-toggle span::after { top: 6px; }
    .drawer {
      position: fixed; inset: 0; z-index: 80; display: none;
    }
    .drawer.is-open { display: block; }
    .drawer-mask { position: absolute; inset: 0; background: rgba(31, 26, 23, 0.46); }
    .drawer-panel {
      position: absolute; top: 0; right: 0; height: 100%; width: min(86vw, 360px);
      background: var(--color-bg); padding: 22px; overflow: auto;
      box-shadow: -12px 0 32px rgba(31,26,23,.18);
    }
    .drawer-panel a { display: block; padding: 12px 4px; font-weight: 600; border-bottom: 1px solid var(--color-line); }
    .badge {
      display: inline-flex; align-items: center; border-radius: var(--radius-badge);
      padding: 3px 10px; font-size: 12px; font-weight: 700; line-height: 1.4;
    }
    .badge-brass { background: var(--color-accent); color: #241C18; }
    .badge-clay { background: var(--color-primary); color: #fff; }
    .badge-light { background: #fff; color: var(--color-primary-deep); border: 1px solid var(--color-line); }
    .badge-dark { background: rgba(196,164,108,.16); color: #F3E6C8; border: 1px solid rgba(196,164,108,.35); }
    .hero {
      position: relative; min-height: calc(100vh - 110px);
      color: #fff; overflow: hidden;
    }
    .hero-slides { position: absolute; inset: 0; }
    .hero-slide {
      position: absolute; inset: 0; opacity: 0; transition: opacity .7s ease;
      background-size: cover; background-position: center;
    }
    .hero-slide.is-on { opacity: 1; }
    .hero-slide::after {
      content: ""; position: absolute; inset: 0;
      background: linear-gradient(90deg, rgba(36,28,24,.82) 0%, rgba(36,28,24,.55) 48%, rgba(36,28,24,.28) 100%);
    }
    .hero-body {
      position: relative; z-index: 2;
      width: min(100% - 32px, var(--wrap));
      margin: 0 auto; padding: 54px 0 88px;
    }
    .hero h1 {
      color: #fff; font-size: clamp(28px, 4vw, 46px); font-weight: 800; max-width: 18em; margin: 12px 0 16px;
    }
    .hero-lead { max-width: 40em; color: rgba(255,252,250,.9); font-size: 16px; margin-bottom: 22px; }
    .quiz-stage {
      display: grid; grid-template-columns: 1.15fr .85fr; gap: 18px; align-items: stretch;
      margin-top: 8px;
    }
    .quiz-card, .preview-card {
      background: rgba(255,252,250,.12);
      border: 1px solid rgba(196,164,108,.35);
      border-radius: 24px; padding: 18px;
    }
    .quiz-card { background: rgba(255,252,250,.16); }
    .quiz-q { font-size: 13px; color: #F3E6C8; margin-bottom: 8px; font-weight: 600; }
    .chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
    .chip {
      border: 1px solid rgba(255,255,255,.28); background: rgba(31,26,23,.25);
      color: #fff; border-radius: 999px; padding: 7px 12px; font-size: 13px; min-height: 36px;
    }
    .chip.is-on { background: var(--color-primary); border-color: var(--color-primary); }
    .preview-title { font-size: 13px; color: #F3E6C8; margin-bottom: 10px; font-weight: 700; }
    .preview-combo { display: flex; flex-direction: column; gap: 8px; min-height: 132px; }
    .preview-item {
      background: rgba(31,26,23,.35); border-radius: 12px; padding: 8px 12px; font-size: 14px;
      display: flex; justify-content: space-between; gap: 8px; align-items: center;
    }
    .hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; align-items: center; }
    .hero-phone {
      display: inline-flex; align-items: center; gap: 8px;
      min-height: 48px; padding: 0 16px; border-radius: 14px;
      background: #fff; color: var(--color-primary-deep); font-weight: 800; font-size: 18px;
    }
    .hero-phone:hover { transform: translateY(-1px); }
    .carousel-nav {
      position: absolute; z-index: 3; left: 0; right: 0; bottom: 18px;
      width: min(100% - 32px, var(--wrap)); margin: 0 auto;
      display: flex; align-items: center; gap: 12px;
    }
    .arrow-btn {
      width: 44px; height: 44px; border-radius: 12px; border: 1px solid rgba(255,255,255,.3);
      background: rgba(31,26,23,.35); color: #fff; display: grid; place-items: center;
    }
    .arrow-btn:hover { background: var(--color-primary); }
    .dots { display: flex; gap: 8px; }
    .dots button {
      width: 9px; height: 9px; border-radius: 99px; border: 0; background: rgba(255,255,255,.4); padding: 0;
    }
    .dots button.is-on { background: var(--color-accent); width: 22px; }
    .progress-track { flex: 1; height: 3px; background: rgba(255,255,255,.22); border-radius: 99px; overflow: hidden; }
    .progress-bar { height: 100%; width: 0; background: var(--color-accent); }
    .section { padding: var(--space-section) 0; }
    .section-alt { background: var(--color-bg-alt); }
    .kicker {
      display: inline-flex; align-items: center; gap: 8px;
      color: var(--color-primary); font-weight: 700; font-size: 13px; letter-spacing: .08em; margin-bottom: 10px;
    }
    .kicker::before { content: ""; width: 18px; height: 2px; background: var(--color-accent); }
    .sec-h { font-size: clamp(24px, 3vw, 34px); font-weight: 800; margin-bottom: 12px; max-width: 18em; }
    .sec-p { color: var(--color-muted); max-width: 40em; margin-bottom: 28px; }
    .sell-strip {
      display: grid; grid-template-columns: 1.2fr .9fr .9fr; gap: 14px;
    }
    .sell-item {
      background: #fff; border-radius: 24px; padding: 22px 22px 20px;
      border: 1px solid var(--color-line); box-shadow: var(--shadow-warm);
      display: grid; grid-template-columns: auto 1fr; gap: 14px; align-items: start;
      transition: .2s ease;
    }
    .sell-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: var(--color-accent); }
    .sell-no {
      width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center;
      background: var(--gradient-brand); color: #fff; font-weight: 800;
    }
    .sell-item h3 { font-size: 18px; margin-bottom: 6px; }
    .sell-item p { color: var(--color-muted); font-size: 14px; }
    .split {
      display: grid; grid-template-columns: 1.05fr .95fr; gap: 32px; align-items: center;
    }
    .split img, .media-frame img { width: 100%; height: 100%; object-fit: cover; }
    .media-frame {
      border-radius: 24px; overflow: hidden; min-height: 360px; height: 460px;
      box-shadow: var(--shadow-warm); border: 1px solid var(--color-line);
    }
    .param-list { margin: 16px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; }
    .param-list li {
      display: flex; justify-content: space-between; gap: 12px; align-items: center;
      background: #fff; border-radius: 14px; padding: 10px 14px; border: 1px solid var(--color-line); font-size: 14px;
    }
    .scene-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
    .scene-tabs button {
      min-height: 42px; padding: 0 16px; border-radius: 999px; border: 1px solid var(--color-line);
      background: #fff; color: var(--color-ink); font-weight: 600;
    }
    .scene-tabs button.is-on { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
    .scene-board {
      display: grid; grid-template-columns: 1.3fr .7fr; gap: 18px;
    }
    .scene-visual { position: relative; border-radius: 24px; overflow: hidden; min-height: 420px; }
    .scene-visual img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
    .scene-tag {
      position: absolute; left: 16px; top: 16px; z-index: 2;
    }
    .scene-steps {
      background: #fff; border-radius: 24px; padding: 22px; border: 1px solid var(--color-line);
    }
    .scene-steps ol { margin: 0; padding: 0; list-style: none; display: grid; gap: 14px; }
    .scene-steps li {
      display: grid; grid-template-columns: 36px 1fr; gap: 10px; align-items: start;
    }
    .step-index {
      width: 36px; height: 36px; border-radius: 50%; background: var(--color-bg-alt);
      display: grid; place-items: center; font-weight: 800; color: var(--color-primary-deep);
    }
    .card-grid-6 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .adv-card {
      background: #fff; border-radius: 24px; overflow: hidden; border: 1px solid transparent;
      box-shadow: var(--shadow-warm); transition: .22s ease;
    }
    .adv-card:hover { transform: translateY(-7px); box-shadow: var(--shadow-hover); border-color: var(--color-accent); }
    .adv-card img { width: 100%; height: 190px; object-fit: cover; }
    .adv-card .body { padding: 16px 18px 20px; }
    .adv-card h3 { font-size: 18px; margin-bottom: 6px; }
    .adv-card p { color: var(--color-muted); font-size: 14px; }
    .hot-layout { display: grid; grid-template-columns: 1.4fr .8fr; grid-template-rows: 1fr 1fr; gap: 16px; }
    .hot-card {
      position: relative; border-radius: 24px; overflow: hidden; min-height: 220px; color: #fff;
      box-shadow: var(--shadow-warm);
    }
    .hot-card.big { grid-row: 1 / span 2; min-height: 460px; }
    .hot-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
    .hot-card .shade {
      position: absolute; inset: 0;
      background: linear-gradient(180deg, rgba(31,26,23,.1), rgba(31,26,23,.78));
    }
    .hot-card .info { position: relative; z-index: 1; height: 100%; display: flex; flex-direction: column; justify-content: flex-end; padding: 20px; }
    .hot-card h3 { color: #fff; font-size: 22px; margin: 8px 0; }
    .compare-wrap { display: grid; gap: 16px; }
    .compare-block {
      background: #fff; border-radius: 24px; padding: 8px 0; border: 1px solid var(--color-line); overflow: hidden;
    }
    .compare-head {
      display: grid; grid-template-columns: 1.1fr 1fr 1fr; gap: 0; padding: 14px 18px;
      background: var(--color-bg-alt); font-weight: 800;
    }
    .compare-row {
      display: grid; grid-template-columns: 1.1fr 1fr 1fr; gap: 0; padding: 12px 18px;
      border-top: 1px solid var(--color-line); font-size: 14px;
    }
    .ok { color: #3E6B4F; font-weight: 700; }
    .mid { color: var(--color-muted); }
    .table-hint { display: none; font-size: 12px; color: var(--color-muted); margin-bottom: 8px; }
    .dark-case { background: var(--gradient-dark); color: #F6F1EA; padding: 88px 0; }
    .dark-case h2, .dark-case h3 { color: #fff; }
    .dark-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 24px; align-items: center; }
    .idea-list { margin: 0; padding: 0; list-style: none; display: grid; gap: 12px; }
    .idea-list li {
      border-left: 3px solid var(--color-accent); padding: 8px 0 8px 14px; color: rgba(246,241,234,.88); font-size: 15px;
    }
    .story-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .story-card {
      background: #fff; border-radius: 24px; overflow: hidden; border: 1px solid var(--color-line); box-shadow: var(--shadow-warm);
      transition: .2s ease;
    }
    .story-card:hover { transform: translateY(-5px); border-color: var(--color-primary); }
    .story-card img { width: 100%; height: 180px; object-fit: cover; }
    .story-card .body { padding: 16px 18px 20px; }
    .story-card h3 { font-size: 18px; margin: 8px 0; }
    .story-card p { color: var(--color-muted); font-size: 14px; }
    .stat-bar {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
    }
    .stat-item {
      background: #fff; border-radius: 20px; padding: 22px 18px; text-align: left;
      border: 1px solid var(--color-line); box-shadow: var(--shadow-warm);
    }
    .stat-num { font-size: 32px; font-weight: 800; color: var(--color-primary-deep); line-height: 1.1; }
    .stat-item p { color: var(--color-muted); font-size: 14px; margin-top: 6px; }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .review-card {
      background: #fff; border-radius: 22px; padding: 18px; border: 1px solid var(--color-line);
    }
    .stars { color: var(--color-accent); letter-spacing: 2px; font-size: 14px; }
    .review-card p { font-size: 14px; color: var(--color-muted); margin: 8px 0 12px; }
    .partner-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
    .partner-mark {
      min-width: 92px; height: 40px; border-radius: 10px; background: var(--color-bg-alt);
      display: grid; place-items: center; font-size: 12px; color: var(--color-muted); font-weight: 700;
      border: 1px dashed var(--color-line);
    }
    .news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
    .news-card {
      background: #fff; border-radius: 22px; overflow: hidden; border: 1px solid var(--color-line); transition: .2s ease;
    }
    .news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-warm); }
    .news-card img { width: 100%; height: 140px; object-fit: cover; }
    .news-card .body { padding: 14px; }
    .news-card h3 { font-size: 16px; margin-bottom: 6px; }
    .news-card p { font-size: 13px; color: var(--color-muted); }
    .swatch-board {
      background: #fff; border-radius: 24px; padding: 22px; border: 1px solid var(--color-line);
    }
    .swatch-row { display: grid; grid-template-columns: repeat(8, 1fr); gap: 10px; margin-bottom: 16px; }
    .swatch {
      aspect-ratio: 1; border-radius: 12px; border: 1px solid var(--color-line); position: relative; overflow: hidden;
    }
    .swatch span {
      position: absolute; left: 6px; bottom: 6px; font-size: 10px; background: rgba(255,252,250,.9);
      border-radius: 999px; padding: 1px 6px; color: var(--color-ink); font-weight: 700;
    }
    .axis { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
    .axis-item {
      background: #fff; border-radius: 20px; padding: 18px; border: 1px solid var(--color-line); position: relative;
    }
    .axis-item::after {
      content: ""; position: absolute; right: -8px; top: 28px; width: 16px; height: 2px; background: var(--color-accent);
    }
    .axis-item:last-child::after { display: none; }
    .faq-list { display: grid; gap: 10px; }
    .faq-item { background: #fff; border-radius: 16px; border: 1px solid var(--color-line); overflow: hidden; }
    .faq-item button {
      width: 100%; text-align: left; background: transparent; border: 0;
      padding: 16px 18px; font-weight: 700; font-size: 16px; display: flex; justify-content: space-between; gap: 12px;
      min-height: 56px; align-items: center;
    }
    .faq-item .ans { display: none; padding: 0 18px 16px; color: var(--color-muted); font-size: 15px; }
    .faq-item.is-open .ans { display: block; }
    .faq-item.is-open button { color: var(--color-primary-deep); }
    .quote-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 20px; }
    .guard-list { display: grid; gap: 10px; }
    .guard-item {
      display: grid; grid-template-columns: 44px 1fr auto; gap: 12px; align-items: center;
      background: #fff; border-radius: 16px; padding: 12px 14px; border: 1px solid var(--color-line);
    }
    .form-card {
      background: #fff; border-radius: 24px; padding: 22px; border: 1px solid var(--color-line); box-shadow: var(--shadow-warm);
    }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .field { display: flex; flex-direction: column; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    .field label { font-size: 13px; font-weight: 700; }
    .field input, .field select {
      min-height: 44px; border-radius: 12px; border: 1px solid var(--color-line);
      padding: 0 12px; background: var(--color-bg); color: var(--color-ink);
    }
    .field input:focus, .field select:focus { border-color: var(--color-primary); outline: none; box-shadow: 0 0 0 3px rgba(196,90,43,.15); }
    .field.is-err input, .field.is-err select { border-color: var(--color-danger); }
    .err { color: var(--color-danger); font-size: 12px; display: none; }
    .field.is-err .err { display: block; }
    .form-ok {
      display: none; background: #EEF6EF; color: #2F5B3C; border-radius: 14px; padding: 12px 14px; font-weight: 600; margin-bottom: 12px;
    }
    .form-ok.is-show { display: block; }
    .site-footer {
      background: #241C18; color: rgba(246,241,234,.82); padding: 48px 0 110px;
    }
    .foot-grid { display: grid; grid-template-columns: 1.3fr 1fr 1.1fr 1fr; gap: 24px; }
    .site-footer h3 { color: #fff; font-size: 16px; margin-bottom: 12px; }
    .site-footer a { display: block; padding: 4px 0; color: rgba(246,241,234,.78); }
    .site-footer a:hover { color: var(--color-accent); }
    .copy { margin-top: 28px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.08); font-size: 13px; color: rgba(246,241,234,.55); }
    .sticky-cta {
      position: fixed; left: 0; right: 0; bottom: 0; z-index: 70;
      background: rgba(36, 28, 24, .94); border-top: 1px solid rgba(196,164,108,.28);
      padding: 8px 12px calc(8px + env(safe-area-inset-bottom));
    }
    .sticky-inner {
      width: min(100% - 16px, var(--wrap)); margin: 0 auto;
      display: grid; grid-template-columns: 1.1fr 1fr 1fr; gap: 8px;
    }
    .sticky-cta a {
      min-height: 44px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
      font-weight: 700; font-size: 14px;
    }
    .sticky-cta .s-phone { background: #fff; color: var(--color-primary-deep); }
    .sticky-cta .s-sample { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.3); }
    .sticky-cta .s-quote { background: var(--gradient-brand); color: #fff; }
    .header-scrolled .nav-top { display: none; }
    @media (max-width: 1024px) {
      :root { --space-section: 64px; --header-offset: 108px; }
      .quiz-stage, .split, .scene-board, .dark-grid, .quote-grid, .hot-layout, .foot-grid { grid-template-columns: 1fr; }
      .hot-card.big { grid-row: auto; min-height: 320px; }
      .card-grid-6, .story-grid, .review-grid { grid-template-columns: repeat(2, 1fr); }
      .news-grid { grid-template-columns: 1fr 1fr; }
      .sell-strip { grid-template-columns: 1fr; }
      .axis { grid-template-columns: 1fr 1fr; }
      .axis-item::after { display: none; }
      .nav-links { display: none; }
      .menu-toggle { display: inline-flex; }
      .nav-cta-desk { display: none; }
      .swatch-row { grid-template-columns: repeat(4, 1fr); }
      .stat-bar { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .hero { min-height: auto; }
      .hero-body { padding: 36px 0 76px; }
      .card-grid-6, .story-grid, .review-grid, .news-grid, .form-grid { grid-template-columns: 1fr; }
      .compare-head, .compare-row { grid-template-columns: 1fr; }
      .compare-head span, .compare-row span { padding: 4px 0; }
      .table-hint { display: block; }
      .media-frame, .scene-visual { min-height: 260px; height: 280px; }
      .trust-row { display: none; }
      .nav-top-inner { justify-content: flex-start; gap: 16px; }
      .foot-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 520px) {
      .container { width: min(100% - 20px, var(--wrap)); }
      .hero-cta { flex-direction: column; align-items: stretch; }
      .hero-phone { justify-content: center; font-size: 16px; }
      .stat-bar, .axis, .foot-grid { grid-template-columns: 1fr; }
      .swatch-row { grid-template-columns: repeat(4, 1fr); }
      .sticky-inner { grid-template-columns: 1fr 1fr 1fr; }
      .sticky-cta a { font-size: 13px; padding: 0 4px; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { transition: none !important; animation: none !important; }
    }

/* roulang page: index */
:root {
      --color-primary: #C45A2B;
      --color-primary-deep: #6B3A22;
      --color-secondary: #6E7C7A;
      --color-accent: #C4A46C;
      --color-bg: #F6F1EA;
      --color-bg-alt: #E7E2DA;
      --color-ink: #1F1A17;
      --color-muted: #5C5854;
      --color-line: #D8D0C6;
      --color-white: #FFFCFA;
      --gradient-brand: linear-gradient(135deg, #C45A2B 0%, #8A4624 48%, #6B3A22 76%, #C4A46C 140%);
      --gradient-dark: linear-gradient(165deg, #241C18 0%, #3A2A22 100%);
      --radius-card: 24px;
      --radius-btn: 14px;
      --radius-badge: 999px;
      --shadow-warm: 0 10px 28px rgba(31, 26, 23, 0.10);
      --shadow-hover: 0 16px 36px rgba(31, 26, 23, 0.14);
      --container: 1220px;
      --space-section: 88px;
      --space-section-m: 48px;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      font-size: 16px;
      line-height: 1.75;
      color: var(--color-ink);
      background: var(--color-bg);
      padding-bottom: 72px;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--color-primary-deep); text-decoration: none; transition: color .2s ease; }
    a:hover { color: var(--color-primary); }
    button, input, select, textarea { font-family: inherit; }
    button { cursor: pointer; }
    h1, h2, h3 { letter-spacing: -0.02em; line-height: 1.28; color: var(--color-ink); }
    h1 { font-size: clamp(28px, 4vw, 46px); font-weight: 800; }
    h2 { font-size: clamp(22px, 3vw, 32px); font-weight: 800; }
    h3 { font-size: 18px; font-weight: 700; }
    p { color: var(--color-muted); }
    :focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; }
    .skip-link {
      position: absolute; left: -999px; top: 8px; background: var(--color-ink); color: #fff;
      padding: 8px 14px; border-radius: 10px; z-index: 100;
    }
    .skip-link:focus { left: 8px; }
    .container { width: min(100% - 32px, var(--container)); margin-inline: auto; }
    .section { padding: var(--space-section) 0; position: relative; }
    .section-alt { background: var(--color-bg-alt); }
    .section-dark { background: var(--gradient-dark); color: #F3EBE3; }
    .section-dark h2, .section-dark h3 { color: #F8F1EA; }
    .section-dark p { color: #C9C0B6; }
    .kicker {
      display: inline-flex; align-items: center; gap: 8px;
      font-size: 13px; font-weight: 600; letter-spacing: .08em;
      color: var(--color-primary); text-transform: none;
    }
    .kicker::before {
      content: ""; width: 18px; height: 2px; background: var(--color-accent); border-radius: 2px;
    }
    .lead { font-size: 16px; max-width: 40em; }
    .seam {
      height: 1px; background: repeating-linear-gradient(90deg, var(--color-line) 0 12px, transparent 12px 18px);
      border: 0; margin: 0;
    }
    .header { position: relative; z-index: 50; }
    .nav-utility {
      background: #3A2A22; color: #E8DFD4; font-size: 13px;
    }
    .nav-utility .container {
      display: flex; align-items: center; justify-content: space-between; gap: 16px;
      min-height: 40px; flex-wrap: wrap; padding-top: 6px; padding-bottom: 6px;
    }
    .nav-utility a { color: #F4EDE4; }
    .nav-utility a:hover { color: var(--color-accent); }
    .trust-pills { display: flex; gap: 8px; flex-wrap: wrap; }
    .trust-pills span {
      border: 1px solid rgba(196,164,108,.35); border-radius: var(--radius-badge);
      padding: 2px 10px; color: var(--color-accent); font-size: 12px;
    }
    .nav-main {
      background: rgba(246,241,234,.94); backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--color-line);
      transition: box-shadow .2s ease;
    }
    .nav-main.is-stuck { position: sticky; top: 0; box-shadow: var(--shadow-warm); }
    .nav-main-inner {
      display: flex; align-items: center; justify-content: space-between; gap: 18px; min-height: 68px;
    }
    .logo {
      display: flex; align-items: center; gap: 10px; color: var(--color-ink); font-weight: 800; font-size: 18px; flex-shrink: 0;
    }
    .logo-mark {
      width: 36px; height: 36px; border-radius: 10px;
      background: var(--gradient-brand); display: grid; place-items: center;
      box-shadow: 0 6px 14px rgba(196,90,43,.28);
    }
    .nav-links { display: flex; align-items: center; gap: 4px; }
    .nav-links a {
      position: relative; padding: 8px 12px; color: var(--color-muted); font-weight: 500; font-size: 15px; border-radius: 10px;
    }
    .nav-links a:hover, .nav-links a.is-active { color: var(--color-primary-deep); }
    .nav-links a.is-active::after {
      content: ""; position: absolute; left: 12px; right: 12px; bottom: 4px; height: 2px;
      background: var(--color-primary); border-radius: 2px;
    }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 46px; padding: 0 20px; border-radius: var(--radius-btn);
      font-weight: 700; font-size: 15px; border: 1px solid transparent; transition: .2s ease;
    }
    .btn-primary {
      background: var(--gradient-brand); color: #fff; box-shadow: 0 8px 18px rgba(107,58,34,.22);
    }
    .btn-primary:hover { transform: translateY(-2px); filter: saturate(1.08); color: #fff; }
    .btn-primary:active { transform: translateY(0); }
    .btn-ghost {
      background: #fff; color: var(--color-primary-deep); border-color: #D9B39A;
    }
    .btn-ghost:hover { border-color: var(--color-primary); color: var(--color-primary); background: #FFF7F2; }
    .btn-dark {
      background: #1F1A17; color: #F6F1EA; border-color: #1F1A17;
    }
    .btn-dark:hover { background: #3A2A22; color: #fff; }
    .icon-btn {
      width: 44px; height: 44px; border-radius: 12px; border: 1px solid var(--color-line);
      background: #fff; display: grid; place-items: center; color: var(--color-ink);
    }
    .icon-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
    .menu-toggle { display: none; }
    .badge {
      display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px;
      border-radius: var(--radius-badge); font-size: 12px; font-weight: 700; line-height: 1.4;
    }
    .badge-brass { background: #F3E6C9; color: #6B3A22; }
    .badge-clay { background: var(--gradient-brand); color: #fff; }
    .badge-ink { background: #2A221E; color: #F3E6C9; }
    .badge-line { background: #fff; border: 1px solid var(--color-line); color: var(--color-muted); }
    .hero {
      position: relative; min-height: min(92vh, 860px); overflow: hidden; color: #fff;
      display: flex; align-items: stretch;
    }
    .hero-slides, .hero-slide {
      position: absolute; inset: 0;
    }
    .hero-slide { opacity: 0; transition: opacity .7s ease; }
    .hero-slide.is-on { opacity: 1; }
    .hero-slide img { width: 100%; height: 100%; object-fit: cover; }
    .hero-mask {
      position: absolute; inset: 0;
      background:
        linear-gradient(90deg, rgba(31,26,23,.78) 0%, rgba(31,26,23,.55) 42%, rgba(36,28,24,.28) 100%),
        linear-gradient(180deg, rgba(36,28,24,.18) 0%, rgba(36,28,24,.45) 100%);
    }
    .hero-inner {
      position: relative; z-index: 2; width: min(100% - 32px, var(--container)); margin: 48px auto 92px;
      display: grid; grid-template-columns: 1.15fr .85fr; gap: 28px; align-items: center;
    }
    .hero-copy .brand-line { color: var(--color-accent); font-weight: 700; font-size: 14px; letter-spacing: .12em; }
    .hero h1 { color: #FFFCFA; margin: 10px 0 16px; }
    .hero .lead { color: #E8DFD4; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 22px 0 16px; }
    .hero-phone {
      display: inline-flex; align-items: center; gap: 10px; min-height: 44px;
      color: #fff; font-weight: 800; font-size: 20px;
    }
    .hero-phone small { display: block; font-size: 12px; font-weight: 500; color: #C9C0B6; }
    .quiz-card {
      background: rgba(255,252,250,.94); color: var(--color-ink); border-radius: 28px;
      padding: 22px; box-shadow: var(--shadow-hover); border: 1px solid rgba(196,164,108,.35);
    }
    .quiz-card h3 { margin: 0 0 6px; }
    .quiz-q { margin-top: 14px; font-size: 13px; font-weight: 700; color: var(--color-ink); }
    .quiz-opts { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
    .quiz-opts button {
      border: 1px solid var(--color-line); background: #fff; border-radius: 999px;
      padding: 7px 12px; font-size: 13px; min-height: 36px; color: var(--color-muted);
    }
    .quiz-opts button.is-on, .quiz-opts button:hover {
      border-color: var(--color-primary); color: var(--color-primary-deep); background: #FFF1E8;
    }
    .quiz-result {
      margin-top: 16px; padding: 14px; border-radius: 18px; background: var(--color-bg-alt);
      border: 1px dashed #C4A46C;
    }
    .quiz-result strong { display: block; margin-bottom: 4px; }
    .hero-controls {
      position: absolute; z-index: 3; left: 0; right: 0; bottom: 22px;
      display: flex; justify-content: center; align-items: center; gap: 12px;
    }
    .hero-dots { display: flex; gap: 8px; align-items: center; }
    .hero-dots button {
      width: 10px; height: 10px; border-radius: 99px; border: 0; background: rgba(255,255,255,.4); padding: 0;
    }
    .hero-dots button.is-on { width: 28px; background: var(--color-accent); }
    .slide-progress {
      position: absolute; left: 0; right: 0; bottom: 0; height: 3px; background: rgba(255,255,255,.15);
    }
    .slide-progress span {
      display: block; height: 100%; width: 0; background: var(--gradient-brand);
    }
    .slide-progress span.run { width: 100%; transition: width 6s linear; }
    .proof-row {
      display: grid; grid-template-columns: 1.3fr 1fr 1.1fr; gap: 14px;
    }
    .proof-item {
      background: #fff; border-radius: 24px; padding: 28px; box-shadow: var(--shadow-warm);
      border: 1px solid transparent; display: grid; grid-template-columns: auto 1fr; gap: 16px; align-items: start;
    }
    .proof-item:hover { transform: translateY(-4px); border-color: var(--color-accent); box-shadow: var(--shadow-hover); }
    .proof-num {
      width: 48px; height: 48px; border-radius: 14px; background: var(--gradient-brand); color: #fff;
      display: grid; place-items: center; font-weight: 800;
    }
    .split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; }
    .media-frame {
      border-radius: var(--radius-card); overflow: hidden; position: relative; box-shadow: var(--shadow-warm);
    }
    .media-frame img { width: 100%; height: 100%; object-fit: cover; min-height: 360px; }
    .stamp {
      position: absolute; top: 18px; right: 18px; border: 1.5px dashed var(--color-accent);
      color: #fff; padding: 6px 10px; font-size: 12px; font-weight: 700; transform: rotate(-8deg);
      background: rgba(31,26,23,.35); border-radius: 4px;
    }
    .param-list { display: grid; gap: 10px; margin: 18px 0; }
    .param-list li {
      display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--color-muted); list-style: none;
    }
    .param-list { padding: 0; }
    .dot-check {
      width: 18px; height: 18px; border-radius: 50%; background: #E9F0EA; color: #3F6B4A;
      display: grid; place-items: center; flex-shrink: 0; font-size: 11px; margin-top: 4px;
    }
    .scene-shell { display: grid; grid-template-columns: 280px 1fr; gap: 22px; }
    .scene-tabs { display: flex; flex-direction: column; gap: 8px; }
    .scene-tabs button {
      text-align: left; padding: 16px 18px; border-radius: 16px; border: 1px solid var(--color-line);
      background: #fff; color: var(--color-muted); font-weight: 700;
    }
    .scene-tabs button.is-on {
      background: var(--gradient-brand); color: #fff; border-color: transparent;
    }
    .scene-panel {
      border-radius: 28px; overflow: hidden; min-height: 420px; position: relative; box-shadow: var(--shadow-warm);
    }
    .scene-panel img { width: 100%; height: 100%; object-fit: cover; min-height: 420px; }
    .scene-caption {
      position: absolute; left: 16px; right: 16px; bottom: 16px;
      background: rgba(31,26,23,.82); color: #F6F1EA; border-radius: 18px; padding: 18px;
    }
    .steps { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
    .steps span {
      background: rgba(196,164,108,.18); color: #F3E6C9; border-radius: 999px; padding: 4px 10px; font-size: 12px;
    }
    .card-grid-6 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .xl-card {
      background: #fff; border-radius: 26px; overflow: hidden; box-shadow: var(--shadow-warm);
      border: 1px solid transparent; transition: .22s ease;
    }
    .xl-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: #C4A46C; }
    .xl-card img { width: 100%; height: 210px; object-fit: cover; }
    .xl-card .body { padding: 18px 20px 22px; }
    .hot-layout { display: grid; grid-template-columns: 1.35fr 1fr; grid-template-rows: 1fr 1fr; gap: 16px; }
    .hot-card { position: relative; border-radius: 26px; overflow: hidden; min-height: 210px; box-shadow: var(--shadow-warm); }
    .hot-card.big { grid-row: 1 / span 2; min-height: 460px; }
    .hot-card img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
    .hot-card .shade {
      position: absolute; inset: 0;
      background: linear-gradient(180deg, rgba(31,26,23,.05), rgba(31,26,23,.78));
    }
    .hot-card .body { position: absolute; left: 0; right: 0; bottom: 0; padding: 22px; color: #fff; }
    .hot-card p { color: #E4DBD2; }
    .compare-wrap { overflow: auto; border-radius: 24px; box-shadow: var(--shadow-warm); background: #fff; }
    table.compare { width: 100%; border-collapse: collapse; min-width: 720px; }
    table.compare th, table.compare td { padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--color-line); font-size: 14px; }
    table.compare th { background: #3A2A22; color: #F6F1EA; font-weight: 700; }
    table.compare tr:hover td { background: #FFF8F2; }
    .yes { color: #3F6B4A; font-weight: 700; }
    .mid { color: #8A5A22; font-weight: 700; }
    .mobile-compare { display: none; }
    .case-wall { display: grid; grid-template-columns: 1.4fr .8fr; gap: 28px; align-items: center; }
    .idea-list { display: grid; gap: 12px; }
    .idea-list li {
      list-style: none; padding: 14px 16px; border-left: 3px solid var(--color-accent);
      background: rgba(255,255,255,.04); border-radius: 0 12px 12px 0; color: #D9D0C6; font-size: 15px;
    }
    .story-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .story-card { background: #fff; border-radius: 24px; overflow: hidden; box-shadow: var(--shadow-warm); }
    .story-card img { width: 100%; height: 180px; object-fit: cover; }
    .story-card .body { padding: 18px; }
    .stats-bar {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
      background: var(--gradient-brand); border-radius: 28px; padding: 28px; color: #fff;
    }
    .stat { text-align: center; }
    .stat b { display: block; font-size: clamp(28px, 4vw, 40px); font-weight: 800; }
    .stat span { font-size: 13px; opacity: .9; }
    .review-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
    .review {
      background: #fff; border-radius: 22px; padding: 18px; box-shadow: var(--shadow-warm);
    }
    .stars { color: #C4A46C; letter-spacing: 2px; font-size: 14px; }
    .news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
    .news-card { background: #fff; border-radius: 22px; overflow: hidden; box-shadow: var(--shadow-warm); }
    .news-card img { width: 100%; height: 150px; object-fit: cover; }
    .news-card .body { padding: 16px; }
    .swatch-rail { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
    .swatch { border-radius: 20px; overflow: hidden; background: #fff; box-shadow: var(--shadow-warm); }
    .swatch .chip { height: 86px; }
    .swatch .meta { padding: 10px 12px 14px; font-size: 13px; }
    .timeline { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; }
    .tl {
      background: #fff; border-radius: 20px; padding: 16px; box-shadow: var(--shadow-warm);
      border-top: 4px solid var(--color-primary);
    }
    .tl b { display: block; color: var(--color-primary); font-size: 12px; margin-bottom: 6px; }
    .faq-item { background: #fff; border-radius: 16px; margin-bottom: 10px; box-shadow: var(--shadow-warm); overflow: hidden; }
    .faq-item button {
      width: 100%; text-align: left; background: transparent; border: 0; padding: 16px 18px;
      font-weight: 700; color: var(--color-ink); display: flex; justify-content: space-between; gap: 12px; min-height: 56px;
    }
    .faq-item .ans { display: none; padding: 0 18px 16px; color: var(--color-muted); font-size: 15px; }
    .faq-item.is-open .ans { display: block; }
    .faq-item .plus { color: var(--color-primary); font-size: 20px; }
    .guarantee { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 28px; }
    .g-item {
      background: #fff; border-radius: 20px; padding: 16px; display: flex; gap: 12px; align-items: flex-start;
      box-shadow: var(--shadow-warm);
    }
    .form-card {
      background: #fff; border-radius: 28px; padding: 28px; box-shadow: var(--shadow-hover);
      border: 1px solid #E6D5C5;
    }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .field { display: flex; flex-direction: column; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    .field label { font-size: 13px; font-weight: 700; color: var(--color-ink); }
    .field input, .field select, .field textarea {
      min-height: 46px; border: 1px solid var(--color-line); border-radius: 12px; padding: 8px 12px; background: #FFFCFA;
    }
    .field input:focus, .field select:focus, .field textarea:focus {
      border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(196,90,43,.12); outline: none;
    }
    .field.is-err input, .field.is-err select { border-color: #A33B2B; }
    .err { color: #A33B2B; font-size: 12px; display: none; }
    .field.is-err .err { display: block; }
    .form-success {
      display: none; background: #E9F0EA; color: #2C5A38; border-radius: 16px; padding: 16px; margin-bottom: 12px; font-weight: 600;
    }
    .form-success.is-on { display: block; }
    .footer {
      background: #241C18; color: #C9C0B6; padding: 56px 0 28px; margin-top: 12px;
    }
    .footer h3 { color: #F6F1EA; font-size: 16px; margin-bottom: 12px; }
    .footer a { color: #E8DFD4; }
    .footer a:hover { color: var(--color-accent); }
    .footer-grid { display: grid; grid-template-columns: 1.3fr .8fr 1fr .9fr; gap: 28px; }
    .footer-copy { margin-top: 28px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.08); font-size: 13px; }
    .dock {
      position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
      background: rgba(36,28,24,.96); backdrop-filter: blur(10px);
      border-top: 1px solid rgba(196,164,108,.25); padding: 8px 12px;
    }
    .dock-inner { width: min(100%, var(--container)); margin: 0 auto; display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 8px; }
    .dock a {
      min-height: 46px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
      font-weight: 700; color: #fff; font-size: 14px;
    }
    .dock .call { background: transparent; border: 1px solid rgba(196,164,108,.5); color: var(--color-accent); }
    .dock .sample { background: #fff; color: var(--color-primary-deep); }
    .dock .ask { background: var(--gradient-brand); }
    .drawer {
      position: fixed; inset: 0; background: rgba(31,26,23,.5); z-index: 70; display: none;
    }
    .drawer.is-on { display: block; }
    .drawer-panel {
      position: absolute; right: 0; top: 0; bottom: 0; width: min(86vw, 360px);
      background: var(--color-bg); padding: 20px; overflow: auto;
      box-shadow: -12px 0 30px rgba(31,26,23,.2);
    }
    .drawer-panel a { display: block; padding: 12px 8px; color: var(--color-ink); font-weight: 600; border-bottom: 1px solid var(--color-line); }
    .hint { font-size: 12px; color: var(--color-muted); margin: 8px 0; display: none; }
    @media (max-width: 1280px) {
      .container { width: min(100% - 32px, 1120px); }
    }
    @media (max-width: 1024px) {
      .hero-inner, .split, .scene-shell, .hot-layout, .case-wall, .footer-grid { grid-template-columns: 1fr; }
      .hot-card.big { grid-row: auto; min-height: 320px; }
      .proof-row, .card-grid-6, .story-grid, .review-grid, .news-grid, .swatch-rail, .timeline, .stats-bar, .guarantee {
        grid-template-columns: 1fr 1fr;
      }
      .nav-links, .nav-cta { display: none; }
      .menu-toggle { display: grid; }
      .hero { min-height: auto; }
      .hero-inner { margin: 28px auto 86px; }
    }
    @media (max-width: 768px) {
      :root { --space-section: 56px; }
      .proof-row, .card-grid-6, .story-grid, .review-grid, .news-grid, .swatch-rail, .timeline, .stats-bar, .guarantee, .form-grid, .footer-grid {
        grid-template-columns: 1fr;
      }
      .nav-utility .trust-pills { display: none; }
      .hero-actions .btn { width: 100%; }
      .scene-tabs { flex-direction: row; overflow: auto; }
      .scene-tabs button { white-space: nowrap; }
      .hint { display: block; }
      .mobile-compare { display: grid; gap: 12px; }
      .compare-wrap { display: none; }
      .dock-inner { grid-template-columns: 1fr 1fr 1fr; }
    }
    @media (max-width: 520px) {
      body { font-size: 15px; }
      .logo span { max-width: 168px; line-height: 1.2; font-size: 16px; }
      .xl-card img, .story-card img { height: 190px; }
      .quiz-card { padding: 16px; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { animation: none !important; transition: none !important; }
      .slide-progress span.run { transition: none; width: 100%; }
    }