/* roulang page: index */
:root {
      --ore: #8f3b2c;
      --ore-deep: #6a2a20;
      --ore-soft: #c45c45;
      --amber: #d28a1f;
      --amber-deep: #b36f12;
      --amber-soft: #f0c36a;
      --graphite: #1a1816;
      --ink: #241f1b;
      --steel: #5b6168;
      --tung: #8a8478;
      --dust: #e9e0d2;
      --paper: #f3ece1;
      --cream: #faf6ef;
      --rust: #b08a62;
      --line: #d7ccbb;
      --card: #fffaf3;
      --white: #fffdf8;
      --shadow: 2px 3px 0 rgba(26, 24, 22, .16), 0 10px 22px rgba(26, 24, 22, .08);
      --shadow-hard: 0 1px 0 rgba(26, 24, 22, .28);
      --radius: 6px;
      --radius-sm: 4px;
      --nav-h: 66px;
      --space: 22px;
      --mono: "Roboto Mono", ui-monospace, "Noto Sans SC", monospace;
      --sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    }
    *, *::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(--sans);
      font-size: 16px;
      line-height: 1.7;
      color: var(--ink);
      background: var(--paper);
      background-image:
        linear-gradient(to right, rgba(143, 59, 44, .045) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(143, 59, 44, .045) 1px, transparent 1px);
      background-size: 32px 32px;
    }
    img { max-width: 100%; height: auto; display: block; border: 0; }
    a { color: var(--ore); text-decoration: none; transition: color .2s ease, transform .2s ease; }
    a:hover { color: var(--ore-deep); }
    a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
      outline: 2px solid var(--amber);
      outline-offset: 2px;
    }
    button, input, select, textarea { font-family: inherit; }
    button { cursor: pointer; }
    h1, h2, h3, h4 { margin: 0; line-height: 1.25; font-weight: 800; letter-spacing: .02em; }
    p { margin: 0 0 12px; }
    ul { margin: 0; padding: 0; list-style: none; }
    table { border-collapse: collapse; width: 100%; }
    .container { width: min(1240px, calc(100% - 40px)); margin-inline: auto; }
    .num { font-family: var(--mono); font-weight: 700; letter-spacing: 0; }
    .site-header { position: relative; z-index: 50; }
    .topbar {
      background: var(--graphite);
      color: var(--dust);
      font-size: 13px;
      border-bottom: 1px solid rgba(176, 138, 98, .35);
    }
    .topbar-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      min-height: 42px;
    }
    .topbar-list, .topbar-actions { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
    .topbar a { color: var(--amber-soft); }
    .topbar a:hover { color: #fff; }
    .topbar-link {
      display: inline-flex; align-items: center; min-height: 44px;
      padding: 0 12px; border: 1px solid rgba(210, 138, 31, .55);
      color: var(--amber-soft); border-radius: var(--radius-sm);
    }
    .topbar-link:hover { background: var(--amber); color: var(--graphite); }
    .nav-row {
      position: sticky; top: 0; z-index: 60;
      background: var(--cream);
      border-bottom: 2px solid var(--ore);
      box-shadow: var(--shadow-hard);
    }
    .nav-inner {
      display: flex; align-items: center; gap: 18px; min-height: var(--nav-h);
    }
    .logo {
      display: flex; align-items: center; gap: 10px; color: var(--graphite); flex-shrink: 0;
    }
    .logo-mark {
      width: 36px; height: 36px; display: grid; place-items: center;
      background: var(--ore); color: var(--cream); font-weight: 800; font-size: 16px;
      border-radius: 4px; box-shadow: 2px 2px 0 var(--graphite);
    }
    .logo-text { font-weight: 800; font-size: 20px; letter-spacing: .08em; }
    .nav-links { display: flex; align-items: center; gap: 4px; margin-left: auto; flex-wrap: wrap; }
    .nav-links a {
      color: var(--ink); font-size: 14px; font-weight: 500;
      min-height: 44px; padding: 0 10px; display: inline-flex; align-items: center;
      border-bottom: 2px solid transparent;
    }
    .nav-links a:hover { color: var(--ore); }
    .nav-links a.is-active { color: var(--ore); border-bottom-color: var(--amber); }
    .nav-cta, .btn {
      display: inline-flex; align-items: center; justify-content: center;
      min-height: 44px; min-width: 44px; padding: 0 18px; border-radius: var(--radius-sm);
      font-weight: 700; font-size: 14px; border: 1px solid transparent;
      transition: background .18s ease, color .18s ease, transform .18s ease, box-shadow .18s ease, border-color .18s ease;
    }
    .btn-primary, .nav-cta {
      background: var(--amber); color: var(--graphite); box-shadow: 2px 2px 0 var(--ore-deep);
    }
    .btn-primary:hover, .nav-cta:hover {
      background: var(--amber-deep); color: #fff; transform: translateY(-2px);
    }
    .btn-primary:active, .nav-cta:active, .btn-line:active, .btn-ghost:active { transform: translateY(0); }
    .btn-line {
      background: transparent; color: var(--cream); border-color: rgba(250, 246, 239, .55);
    }
    .btn-line:hover { background: rgba(250, 246, 239, .12); transform: translateY(-2px); }
    .btn-ghost {
      background: var(--cream); color: var(--graphite); border-color: var(--graphite);
    }
    .btn-ghost:hover { background: var(--dust); transform: translateY(-2px); }
    .btn-ore { background: var(--ore); color: var(--cream); }
    .btn-ore:hover { background: var(--ore-deep); color: #fff; transform: translateY(-2px); }
    .menu-btn {
      display: none; width: 44px; height: 44px; border: 1px solid var(--graphite);
      background: var(--white); border-radius: var(--radius-sm); padding: 0; margin-left: auto;
    }
    .menu-btn span, .menu-btn span::before, .menu-btn span::after {
      display: block; width: 18px; height: 2px; background: var(--graphite); position: relative; margin: 0 auto;
    }
    .menu-btn span::before, .menu-btn span::after { content: ""; position: absolute; left: 0; }
    .menu-btn span::before { top: -6px; }
    .menu-btn span::after { top: 6px; }
    .drawer {
      display: none; position: fixed; inset: 0; z-index: 80;
      background: rgba(26, 24, 22, .46);
    }
    .drawer.is-open { display: block; }
    .drawer-panel {
      position: absolute; top: 0; right: 0; height: 100%; width: min(86vw, 360px);
      background: var(--cream); border-left: 3px solid var(--ore);
      padding: 22px; overflow: auto;
    }
    .drawer-nav { display: flex; flex-direction: column; gap: 4px; margin-top: 18px; }
    .drawer-nav a {
      min-height: 48px; display: flex; align-items: center; padding: 0 12px;
      color: var(--ink); border-bottom: 1px solid var(--line); font-weight: 600;
    }
    .hero {
      position: relative; min-height: min(92vh, 820px); color: var(--cream);
      isolation: isolate; overflow: hidden;
    }
    .hero-slides { position: absolute; inset: 0; z-index: 0; }
    .hero-slide { position: absolute; inset: 0; opacity: 0; transition: opacity .55s ease; }
    .hero-slide.is-active { opacity: 1; z-index: 1; }
    .hero-slide img { width: 100%; height: 100%; object-fit: cover; }
    .hero-slide::after {
      content: ""; position: absolute; inset: 0;
      background:
        linear-gradient(90deg, rgba(26, 24, 22, .82) 0%, rgba(26, 24, 22, .42) 52%, rgba(26, 24, 22, .18) 100%),
        linear-gradient(0deg, rgba(26, 24, 22, .72) 0%, transparent 42%);
    }
    .hero-overlay { position: relative; z-index: 2; padding: 54px 0 26px; min-height: min(92vh, 820px); display: flex; align-items: flex-end; }
    .hero-grid {
      display: grid; grid-template-columns: 1.25fr .75fr; gap: 24px; align-items: end; width: 100%;
    }
    .kicker {
      display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700;
      letter-spacing: .12em; color: var(--amber-soft); margin-bottom: 10px;
    }
    .kicker::before { content: ""; width: 18px; height: 2px; background: var(--amber); }
    .hero h1 { font-size: clamp(28px, 4.1vw, 46px); max-width: 16ch; margin-bottom: 14px; }
    .hero-lead { font-size: 15px; line-height: 1.8; color: var(--dust); max-width: 62ch; margin-bottom: 20px; }
    .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
    .hero-aside { display: grid; gap: 10px; }
    .pick-card {
      display: grid; grid-template-columns: 86px 1fr; gap: 10px; background: rgba(250, 246, 239, .94);
      color: var(--ink); border: 1px solid var(--line); border-left: 4px solid var(--ore);
      border-radius: var(--radius-sm); overflow: hidden; min-height: 86px;
      box-shadow: var(--shadow);
    }
    .pick-card img { width: 86px; height: 100%; object-fit: cover; }
    .pick-card strong { display: block; font-size: 14px; }
    .pick-card span { font-size: 13px; color: var(--steel); }
    .hero-params {
      margin-top: 18px; display: grid; grid-template-columns: repeat(3, 1fr);
      background: rgba(26, 24, 22, .78); border: 1px solid rgba(176, 138, 98, .4);
      border-radius: var(--radius-sm);
    }
    .param-item { padding: 12px 16px; border-right: 1px solid rgba(176, 138, 98, .28); }
    .param-item:last-child { border-right: 0; }
    .param-item b { display: block; font-size: 12px; color: var(--tung); font-weight: 500; }
    .param-item span { font-family: var(--mono); font-size: 15px; color: var(--amber-soft); }
    .hero-controls {
      position: absolute; right: max(20px, calc((100% - 1240px) / 2)); bottom: 118px; z-index: 3;
      display: flex; align-items: center; gap: 8px;
    }
    .hero-btn {
      width: 44px; height: 44px; border: 1px solid rgba(250, 246, 239, .45);
      background: rgba(26, 24, 22, .45); color: var(--cream); border-radius: 4px;
    }
    .hero-btn:hover { background: var(--ore); }
    .hero-dots { display: flex; gap: 6px; }
    .hero-dots button {
      width: 28px; height: 4px; border: 0; background: rgba(250, 246, 239, .35); padding: 0; min-height: 12px;
    }
    .hero-dots button.is-on { background: var(--amber); }
    main section { scroll-margin-top: 78px; }
    .sec { padding: 72px 0; position: relative; }
    .sec-tight { padding: 48px 0; }
    .sec-head { margin-bottom: 28px; max-width: 760px; }
    .sec-head h2 { font-size: clamp(24px, 3vw, 34px); margin-bottom: 12px; }
    .sec-lead { color: var(--steel); font-size: 15px; line-height: 1.85; }
    .badge {
      display: inline-flex; align-items: center; min-height: 28px; padding: 0 8px;
      border: 1px solid var(--line); font-size: 12px; color: var(--ore); background: var(--white);
      border-radius: 2px; font-weight: 700;
    }
    .split { display: grid; grid-template-columns: .92fr 1.08fr; gap: 28px; align-items: stretch; }
    .media-frame {
      position: relative; overflow: hidden; border: 1px solid var(--graphite);
      box-shadow: var(--shadow); background: var(--graphite);
    }
    .media-frame img { width: 100%; height: 100%; object-fit: cover; min-height: 420px; }
    .media-frame .cap {
      position: absolute; left: 0; bottom: 0; right: 0; padding: 10px 12px;
      background: rgba(26, 24, 22, .78); color: var(--dust); font-size: 13px;
    }
    .spec-box {
      background: var(--card); border: 1px solid var(--graphite); box-shadow: var(--shadow);
      padding: 22px; position: relative;
    }
    .spec-box::before {
      content: ""; position: absolute; left: 10px; top: 10px; width: 8px; height: 8px;
      border: 2px solid var(--ore); border-right: 0; border-bottom: 0;
    }
    .spec-table th, .spec-table td {
      text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line);
      font-size: 14px;
    }
    .spec-table th { color: var(--steel); font-weight: 500; width: 34%; }
    .spec-table td { font-family: var(--mono); }
    .note {
      margin-top: 14px; padding: 12px; background: var(--dust); border-left: 3px solid var(--amber);
      font-size: 14px; color: var(--ink);
    }
    .func-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 14px; }
    .func-card {
      grid-column: span 3; background: var(--card); border: 1px solid var(--graphite);
      padding: 18px 16px 16px; position: relative; box-shadow: var(--shadow-hard);
      min-height: 210px; display: flex; flex-direction: column; gap: 8px;
    }
    .func-card.is-wide { grid-column: span 6; display: grid; grid-template-columns: 1.1fr .9fr; gap: 12px; min-height: 240px; padding: 0; overflow: hidden; }
    .func-card.is-wide .func-body { padding: 18px; }
    .func-card.is-wide img { height: 100%; object-fit: cover; }
    .model-tag {
      position: absolute; left: 0; top: 0; background: var(--ore); color: var(--cream);
      font-size: 12px; font-weight: 700; padding: 4px 8px; letter-spacing: .04em;
    }
    .func-card h3 { font-size: 20px; padding-top: 18px; }
    .func-card.is-wide h3 { padding-top: 0; }
    .func-card p, .prod-card p, .news-card p, .review-card p, .story-card p { font-size: 14px; color: var(--steel); }
    .dots { display: grid; gap: 6px; margin: 8px 0 12px; }
    .dots li { padding-left: 14px; position: relative; font-size: 14px; }
    .dots li::before { content: ""; width: 6px; height: 6px; background: var(--amber); position: absolute; left: 0; top: .55em; }
    .hot-layout { display: grid; grid-template-columns: 1.35fr .85fr; gap: 16px; }
    .prod-card {
      background: var(--card); border: 1px solid var(--graphite); position: relative;
      box-shadow: var(--shadow); overflow: hidden; display: flex; flex-direction: column;
    }
    .prod-card img { width: 100%; height: 240px; object-fit: cover; }
    .hot-feature img { height: 360px; }
    .prod-body { padding: 16px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
    .prod-meta { display: flex; gap: 16px; font-family: var(--mono); font-size: 13px; color: var(--ore-deep); }
    .hot-stack { display: grid; gap: 16px; }
    .hot-stack .prod-card { display: grid; grid-template-columns: 180px 1fr; }
    .hot-stack img { height: 100%; min-height: 168px; }
    .scene-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
    .scene-tabs button {
      min-height: 44px; padding: 0 14px; border: 1px solid var(--graphite); background: var(--cream);
      color: var(--ink); font-weight: 700; border-radius: 2px;
    }
    .scene-tabs button.is-on, .scene-tabs button:hover { background: var(--ore); color: var(--cream); }
    .scene-panel { display: none; grid-template-columns: 1.05fr .95fr; gap: 20px; align-items: center; background: var(--card); border: 1px solid var(--graphite); padding: 16px; box-shadow: var(--shadow); }
    .scene-panel.is-on { display: grid; }
    .scene-panel img { width: 100%; height: 340px; object-fit: cover; border: 1px solid var(--line); }
    .chip-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
    .chip { font-size: 13px; padding: 6px 10px; background: var(--dust); border: 1px solid var(--line); }
    .gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
    .gallery-item {
      position: relative; overflow: hidden; border: 1px solid var(--graphite); cursor: zoom-in;
      background: var(--graphite); min-height: 180px;
    }
    .gallery-item:nth-child(1), .gallery-item:nth-child(6) { grid-column: span 2; }
    .gallery-item img { width: 100%; height: 220px; object-fit: cover; transition: transform .25s ease; }
    .gallery-item:hover img { transform: scale(1.04); }
    .gallery-item figcaption {
      position: absolute; left: 0; right: 0; bottom: 0; padding: 8px 10px;
      background: rgba(26, 24, 22, .76); color: var(--dust); font-size: 13px;
    }
    .lightbox {
      display: none; position: fixed; inset: 0; z-index: 90; background: rgba(26, 24, 22, .88);
      align-items: center; justify-content: center; padding: 24px;
    }
    .lightbox.is-open { display: flex; }
    .lightbox img { max-width: min(1100px, 92vw); max-height: 82vh; border: 2px solid var(--amber); }
    .lightbox button {
      position: absolute; top: 18px; right: 18px; width: 44px; height: 44px;
      background: var(--amber); border: 0; font-size: 22px;
    }
    .case-wrap { background: var(--graphite); color: var(--cream); padding: 72px 0; background-image: repeating-linear-gradient(-45deg, rgba(210, 138, 31, .07) 0 2px, transparent 2px 11px); }
    .case-wrap .sec-lead { color: var(--dust); }
    .case-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 14px; }
    .case-card { border: 1px solid rgba(176, 138, 98, .35); padding: 18px; background: rgba(26, 24, 22, .55); }
    .case-card h3 { color: var(--amber-soft); font-size: 20px; margin-bottom: 10px; }
    .case-kv { display: grid; grid-template-columns: 88px 1fr; gap: 6px 10px; font-size: 14px; }
    .case-kv b { color: var(--tung); font-weight: 500; }
    .case-side { display: grid; gap: 14px; }
    .data-pill { font-family: var(--mono); font-size: 28px; color: var(--amber); }
    .story-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .story-card { background: var(--card); border: 1px solid var(--graphite); box-shadow: var(--shadow); }
    .story-card img { height: 160px; width: 100%; object-fit: cover; }
    .story-body { padding: 16px; }
    .who { font-size: 13px; color: var(--ore); font-weight: 700; margin-bottom: 6px; }
    .stat-bar {
      background: linear-gradient(90deg, var(--ore-deep), var(--ore)); color: var(--cream); padding: 36px 0;
      border-top: 4px solid var(--amber); border-bottom: 4px solid var(--graphite);
    }
    .stat-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; text-align: left; }
    .stat-item b { display: block; font-family: var(--mono); font-size: clamp(22px, 3vw, 34px); line-height: 1.1; }
    .stat-item span { font-size: 13px; color: var(--dust); }
    .plan-grid { display: grid; grid-template-columns: 1fr 1.08fr 1fr; gap: 14px; align-items: stretch; }
    .plan-card {
      background: var(--card); border: 1px solid var(--graphite); padding: 22px 18px;
      box-shadow: var(--shadow-hard); display: flex; flex-direction: column; gap: 10px;
    }
    .plan-card.is-hot { border: 3px solid var(--ore); transform: translateY(-6px); background: #fff8ee; }
    .plan-card h3 { font-size: 22px; }
    .price { font-family: var(--mono); font-size: 20px; color: var(--ore); }
    .plan-card ul li { font-size: 14px; padding: 6px 0 6px 14px; position: relative; border-bottom: 1px dashed var(--line); }
    .plan-card ul li::before { content: "＋"; position: absolute; left: 0; color: var(--amber-deep); }
    .review-wall { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
    .review-card {
      background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--ore);
      padding: 14px; min-height: 170px;
    }
    .review-card:nth-child(2), .review-card:nth-child(5) { grid-row: span 1; margin-top: 18px; }
    .stars { color: var(--amber-deep); letter-spacing: 2px; font-size: 13px; }
    .tag { display: inline-block; font-size: 12px; background: var(--dust); padding: 2px 6px; margin-left: 6px; }
    .quote-rail { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .quote-card {
      display: grid; grid-template-columns: 160px 1fr; background: var(--white);
      border: 1px solid var(--graphite); overflow: hidden;
    }
    .quote-card img { width: 160px; height: 100%; object-fit: cover; min-height: 180px; }
    .quote-body { padding: 18px; }
    .quote-body q { font-size: 16px; font-weight: 700; display: block; margin-bottom: 10px; }
    .delta { font-family: var(--mono); font-size: 13px; color: var(--ore-deep); }
    .news-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 14px; }
    .news-card { background: var(--card); border: 1px solid var(--graphite); overflow: hidden; box-shadow: var(--shadow-hard); }
    .news-card img { height: 180px; width: 100%; object-fit: cover; }
    .news-card .pad { padding: 14px; }
    .news-card h3 { font-size: 18px; margin-bottom: 8px; }
    .faq-item { border-bottom: 1px solid var(--graphite); background: var(--card); }
    .faq-item button {
      width: 100%; text-align: left; min-height: 56px; padding: 12px 44px 12px 16px;
      background: transparent; border: 0; font-size: 16px; font-weight: 700; position: relative;
    }
    .faq-item button::after {
      content: "+"; position: absolute; right: 16px; top: 50%; transform: translateY(-50%);
      color: var(--ore); font-size: 22px;
    }
    .faq-item.is-open button::after { content: "–"; }
    .faq-item .faq-a { display: none; padding: 0 16px 16px; color: var(--steel); font-size: 15px; }
    .faq-item.is-open .faq-a { display: block; }
    .cta-band {
      background: var(--ore-deep); color: var(--cream); padding: 64px 0 72px;
      background-image:
        linear-gradient(rgba(26, 24, 22, .28), rgba(26, 24, 22, .28)),
        url("/assets/images/247b63d5faf56b08.jpg");
      background-size: cover; background-position: center;
    }
    .cta-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 24px; }
    .form {
      background: var(--cream); color: var(--ink); padding: 22px; border: 2px solid var(--graphite);
      box-shadow: 6px 6px 0 rgba(26, 24, 22, .35);
    }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 14px; }
    .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, .field textarea {
      min-height: 44px; border: 1px solid var(--steel); background: var(--white);
      padding: 8px 10px; border-radius: 2px; font-size: 15px; color: var(--ink);
    }
    .field textarea { min-height: 90px; resize: vertical; }
    .field input:focus, .field textarea:focus, .field select:focus { border-color: var(--ore); }
    .field.error input, .field.error textarea, .field.error select { border-color: var(--amber); box-shadow: 0 0 0 3px rgba(210, 138, 31, .25); }
    .err { display: none; color: var(--amber-deep); font-size: 12px; }
    .field.error .err { display: block; }
    .form-success {
      display: none; padding: 16px; background: #efe4c8; border-left: 4px solid var(--amber);
      font-weight: 700; margin-bottom: 12px;
    }
    .form-success.is-on, .is-sent .form-success { display: block; }
    .site-footer {
      background: var(--graphite); color: var(--dust); padding: 42px 0 20px;
      border-top: 6px solid var(--ore);
    }
    .foot-grid { display: grid; grid-template-columns: 1.3fr 1fr 1.1fr; gap: 24px; margin-bottom: 24px; }
    .site-footer h3 { color: var(--cream); font-size: 16px; margin-bottom: 10px; }
    .site-footer a { color: var(--amber-soft); display: inline-block; min-height: 32px; }
    .foot-logo { font-size: 22px; font-weight: 800; color: var(--cream); margin-bottom: 8px; }
    .icp { font-size: 13px; color: var(--tung); border-top: 1px solid rgba(176, 138, 98, .25); padding-top: 14px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
    .anchor-col { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
    @media (max-width: 1200px) {
      .container { width: min(100% - 32px, 1120px); }
      .review-wall { grid-template-columns: repeat(3, 1fr); }
      .gallery { grid-template-columns: repeat(3, 1fr); }
      .stat-grid { grid-template-columns: repeat(3, 1fr); gap: 18px; }
    }
    @media (max-width: 992px) {
      .hero-grid, .split, .hot-layout, .scene-panel.is-on, .case-grid, .cta-grid, .quote-rail, .news-grid, .plan-grid { grid-template-columns: 1fr; }
      .func-card, .func-card.is-wide { grid-column: span 6; }
      .func-card.is-wide { grid-template-columns: 1fr 1fr; }
      .hot-stack .prod-card { grid-template-columns: 160px 1fr; }
      .story-grid { grid-template-columns: 1fr 1fr; }
      .nav-links { display: none; }
      .nav-cta { display: none; }
      .menu-btn { display: inline-flex; align-items: center; justify-content: center; }
      .hero-controls { right: 16px; bottom: 24px; }
      .plan-card.is-hot { transform: none; }
      .foot-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .topbar .hide-sm { display: none; }
      .hero { min-height: auto; }
      .hero-overlay { min-height: auto; padding-top: 28px; }
      .hero h1 { max-width: none; }
      .hero-params { grid-template-columns: 1fr; }
      .param-item { border-right: 0; border-bottom: 1px solid rgba(176, 138, 98, .28); }
      .func-card.is-wide { grid-template-columns: 1fr; }
      .hot-stack .prod-card, .quote-card { grid-template-columns: 1fr; }
      .hot-stack img, .quote-card img { height: 180px; width: 100%; }
      .gallery { grid-template-columns: 1fr 1fr; }
      .gallery-item:nth-child(1), .gallery-item:nth-child(6) { grid-column: span 2; }
      .review-wall, .news-grid { grid-template-columns: 1fr 1fr; }
      .form-grid { grid-template-columns: 1fr; }
      .sec { padding: 52px 0; }
      .media-frame img { min-height: 240px; }
    }
    @media (max-width: 520px) {
      .story-grid, .review-wall, .news-grid, .stat-grid, .foot-grid { grid-template-columns: 1fr; }
      .gallery { grid-template-columns: 1fr; }
      .gallery-item:nth-child(1), .gallery-item:nth-child(6) { grid-column: span 1; }
      .func-card, .func-card.is-wide { grid-column: span 6; }
      .hero-aside { display: none; }
      .logo-text { font-size: 17px; }
    }
    @media (max-width: 375px) {
      .container { width: calc(100% - 20px); }
      body { font-size: 15px; }
      .hero-lead { font-size: 14px; }
      .sec-head h2 { font-size: 22px; }
      .btn, .nav-cta { width: 100%; }
      .hero-actions { flex-direction: column; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { animation: none !important; transition: none !important; }
    }

/* roulang page: index */
:root {
      --ore: #a24b2e;
      --ore-deep: #7a3420;
      --ore-soft: #c56a48;
      --slag: #3c2a22;
      --amber: #d4a017;
      --amber-ink: #5c4308;
      --dust: #e8e2d6;
      --concrete: #d5d0c8;
      --paper: #f3eee6;
      --rock: #2a2623;
      --graphite: #1c1a18;
      --ink: #1a1614;
      --muted: #6b645c;
      --line: #c9c0b4;
      --vein: rgba(162, 75, 46, 0.38);
      --iron-red: #9b2c2c;
      --ok: #3d6b3a;
      --white: #f7f4ef;
      --card: #fbf8f2;
      --radius: 6px;
      --radius-sm: 4px;
      --shadow: 0 6px 14px rgba(28, 22, 18, 0.14);
      --shadow-tight: 0 3px 8px rgba(28, 22, 18, 0.16);
      --space: 24px;
      --header-offset: 118px;
      --mono: ui-monospace, "Sarasa Mono SC", "Cascadia Mono", "Microsoft YaHei", monospace;
      --sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", "Heiti SC", sans-serif;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: var(--sans);
      font-size: 16px;
      line-height: 1.78;
      color: var(--ink);
      background: var(--paper);
      min-width: 320px;
    }
    body.nav-lock { overflow: hidden; }
    img { max-width: 100%; display: block; height: auto; }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font-family: inherit; }
    button { cursor: pointer; border: 0; background: none; }
    h1, h2, h3, h4, p { margin: 0; }
    ul, ol, dl { margin: 0; padding: 0; }
    :focus-visible {
      outline: 2px solid var(--ore);
      outline-offset: 3px;
    }
    .skip {
      position: absolute;
      left: 12px;
      top: -48px;
      background: var(--ore);
      color: #fff;
      padding: 10px 14px;
      z-index: 80;
      border-radius: var(--radius-sm);
    }
    .skip:focus { top: 12px; }
    .container {
      width: min(1240px, calc(100% - 40px));
      margin: 0 auto;
    }
    .num { font-family: var(--mono); font-variant-numeric: tabular-nums; letter-spacing: 0.02em; }
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      min-height: 28px;
      padding: 0 10px;
      border-radius: var(--radius-sm);
      font-size: 12px;
      letter-spacing: 0.04em;
      background: rgba(212, 160, 23, 0.16);
      color: var(--amber-ink);
      border: 1px solid rgba(212, 160, 23, 0.45);
    }
    .badge-steel {
      background: rgba(60, 42, 34, 0.08);
      color: var(--slag);
      border-color: var(--line);
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 0 18px;
      border-radius: var(--radius);
      font-size: 15px;
      font-weight: 650;
      letter-spacing: 0.02em;
      transition: background .18s ease, transform .18s ease, box-shadow .18s ease, border-color .18s ease, color .18s ease;
      text-align: center;
    }
    .btn-primary {
      background: var(--ore);
      color: #fff;
      box-shadow: var(--shadow-tight);
    }
    .btn-primary:hover {
      background: var(--ore-deep);
      transform: translateY(-2px);
      box-shadow: 0 8px 16px rgba(122, 52, 32, 0.28);
    }
    .btn-primary:active { transform: translateY(1px); }
    .btn-ghost {
      background: transparent;
      color: var(--white);
      border: 1px solid rgba(247, 244, 239, 0.55);
    }
    .btn-ghost:hover {
      border-color: #fff;
      transform: translateY(-2px);
      background: rgba(255,255,255,0.06);
    }
    .btn-steel {
      background: var(--card);
      color: var(--ink);
      border: 1px solid var(--slag);
    }
    .btn-steel:hover {
      border-color: var(--ore);
      transform: translateY(-2px);
      box-shadow: var(--shadow-tight);
    }
    .btn-block { width: 100%; }
    .site-header {
      position: relative;
      z-index: 40;
      background: var(--graphite);
      color: var(--white);
    }
    .topbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      min-height: 40px;
      font-size: 13px;
      color: #d9d2c8;
      border-bottom: 1px solid rgba(162, 75, 46, 0.28);
      background:
        linear-gradient(90deg, rgba(162,75,46,0.16), transparent 18%),
        var(--graphite);
    }
    .topbar a { color: #f0e6d8; }
    .topbar a:hover { color: #fff; }
    .topbar-left, .topbar-right {
      display: flex;
      align-items: center;
      gap: 18px;
      flex-wrap: wrap;
      min-height: 40px;
    }
    .topbar .split { width: 1px; height: 12px; background: rgba(255,255,255,0.18); }
    .nav-main {
      background: #221e1b;
      border-bottom: 1px solid rgba(201, 192, 180, 0.12);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      gap: 18px;
      min-height: 78px;
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
      color: #fff;
    }
    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: var(--radius-sm);
      background: linear-gradient(160deg, var(--ore) 0%, var(--slag) 100%);
      display: grid;
      place-items: center;
      box-shadow: inset 0 0 0 1px rgba(255,255,255,0.12);
    }
    .brand-mark svg { width: 26px; height: 26px; fill: none; stroke: #fff; stroke-width: 1.7; }
    .brand-name { font-size: 18px; font-weight: 760; letter-spacing: 0.08em; line-height: 1.15; }
    .brand-sub { display: block; font-size: 11px; letter-spacing: 0.18em; color: #cbbfb2; font-weight: 500; margin-top: 2px; }
    .nav-links {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 4px;
      flex: 1;
      list-style: none;
    }
    .nav-links a {
      display: inline-flex;
      align-items: center;
      min-height: 44px;
      padding: 0 10px;
      font-size: 14px;
      color: #ddd4c8;
      position: relative;
    }
    .nav-links a:hover { color: #fff; }
    .nav-links a.is-active {
      color: #fff;
    }
    .nav-links a.is-active::after {
      content: "";
      position: absolute;
      left: 10px;
      right: 10px;
      bottom: 8px;
      height: 2px;
      background: var(--ore);
    }
    .nav-cta { margin-left: 8px; flex-shrink: 0; }
    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border: 1px solid rgba(255,255,255,0.2);
      border-radius: var(--radius-sm);
      align-items: center;
      justify-content: center;
      margin-left: auto;
    }
    .menu-toggle span,
    .menu-toggle span::before,
    .menu-toggle span::after {
      display: block;
      width: 18px;
      height: 2px;
      background: #fff;
      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 {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(16, 13, 11, 0.55);
      z-index: 50;
    }
    .drawer-panel {
      margin-left: auto;
      width: min(360px, 100%);
      height: 100%;
      background: #1f1b18;
      color: #fff;
      padding: 24px 20px 32px;
      overflow: auto;
      box-shadow: -12px 0 30px rgba(0,0,0,0.28);
    }
    .drawer-panel a {
      display: flex;
      align-items: center;
      min-height: 48px;
      border-bottom: 1px solid rgba(255,255,255,0.08);
      color: #efe7dc;
      font-size: 16px;
    }
    .drawer-actions { display: grid; gap: 10px; margin-top: 22px; }
    .site-header.is-stuck .topbar {
      display: none;
    }
    .site-header.is-stuck .nav-main {
      position: sticky;
      top: 0;
      z-index: 45;
      box-shadow: 0 8px 18px rgba(0,0,0,0.22);
    }
    .hero {
      position: relative;
      background: var(--graphite);
      color: #fff;
      overflow: hidden;
    }
    .hero-stage { position: relative; min-height: 720px; }
    .hero-slides { position: absolute; inset: 0; }
    .hero-slide {
      position: absolute;
      inset: 0;
      opacity: 0;
      transition: opacity .7s ease;
    }
    .hero-slide.is-active { opacity: 1; z-index: 1; }
    .hero-slide img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .hero-dim {
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(16,13,11,0.88) 0%, rgba(16,13,11,0.72) 42%, rgba(16,13,11,0.38) 100%),
        linear-gradient(180deg, rgba(16,13,11,0.18), rgba(16,13,11,0.55));
    }
    .hero-magazine {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 36px;
      padding: 54px 0 92px;
      align-items: stretch;
    }
    .hero-copy {
      display: none;
      max-width: 640px;
    }
    .hero-copy.is-active { display: block; }
    .kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      letter-spacing: 0.12em;
      color: #e2c7b6;
      margin-bottom: 16px;
    }
    .kicker::before {
      content: "";
      width: 18px;
      height: 2px;
      background: var(--ore);
    }
    .hero h1, .hero-copy h2 {
      font-size: 56px;
      line-height: 1.16;
      font-weight: 780;
      letter-spacing: 0.01em;
      margin-bottom: 18px;
    }
    .hero-lead {
      font-size: 16px;
      line-height: 1.85;
      color: #e7ddd2;
      margin-bottom: 22px;
      max-width: 58ch;
    }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 22px; }
    .spec-chips {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .spec-chips span {
      min-height: 34px;
      display: inline-flex;
      align-items: center;
      padding: 0 10px;
      border: 1px solid rgba(255,255,255,0.16);
      background: rgba(28, 22, 18, 0.35);
      border-radius: var(--radius-sm);
      font-size: 13px;
      font-family: var(--mono);
    }
    .hero-picks {
      display: grid;
      gap: 12px;
      align-content: center;
    }
    .pick-card {
      display: grid;
      grid-template-columns: 118px 1fr;
      gap: 12px;
      background: rgba(28, 22, 18, 0.62);
      border: 1px solid rgba(201, 192, 180, 0.18);
      border-radius: var(--radius);
      overflow: hidden;
      min-height: 108px;
      box-shadow: var(--shadow-tight);
      transition: transform .18s ease, border-color .18s ease;
    }
    .pick-card:hover {
      transform: translateY(-3px);
      border-color: var(--ore);
    }
    .pick-card img { width: 118px; height: 100%; object-fit: cover; }
    .pick-body { padding: 12px 12px 12px 0; }
    .pick-body .tag {
      font-size: 12px;
      color: var(--amber);
      letter-spacing: 0.08em;
    }
    .pick-body h3 { font-size: 18px; margin: 4px 0 6px; }
    .pick-body p { font-size: 13px; color: #d9d0c6; line-height: 1.55; }
    .hero-controls {
      position: absolute;
      z-index: 3;
      left: 0;
      right: 0;
      bottom: 22px;
    }
    .hero-controls .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
    }
    .dots { display: flex; gap: 8px; }
    .dot {
      width: 14px;
      height: 14px;
      border-radius: 2px;
      background: rgba(255,255,255,0.28);
      border: 1px solid rgba(255,255,255,0.4);
    }
    .dot.is-active { background: var(--ore); border-color: var(--ore); }
    .arrows { display: flex; gap: 8px; }
    .arrow {
      width: 44px;
      height: 44px;
      border: 1px solid rgba(255,255,255,0.32);
      color: #fff;
      border-radius: var(--radius-sm);
      background: rgba(16,13,11,0.35);
    }
    .arrow:hover { border-color: #fff; background: rgba(162,75,46,0.7); }
    .rivet {
      height: 10px;
      background:
        repeating-linear-gradient(90deg, #6a5346 0 8px, transparent 8px 28px),
        var(--slag);
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
    }
    main { display: block; background: var(--paper); }
    .section { padding: 88px 0; position: relative; }
    .section-head { max-width: 760px; margin-bottom: 36px; }
    .section-head h2 {
      font-size: 34px;
      line-height: 1.28;
      margin-bottom: 14px;
      letter-spacing: 0.01em;
    }
    .section-head p {
      color: var(--muted);
      font-size: 16px;
      line-height: 1.85;
    }
    .eyebrow {
      display: inline-block;
      font-size: 12px;
      letter-spacing: 0.16em;
      color: var(--ore);
      margin-bottom: 8px;
      font-weight: 700;
    }
    #intro { background: var(--paper); }
    .intro-grid {
      display: grid;
      grid-template-columns: 1.05fr 0.95fr;
      gap: 48px;
      align-items: center;
    }
    .frame {
      position: relative;
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow);
      border: 1px solid var(--line);
    }
    .frame::after {
      content: "";
      position: absolute;
      inset: 10px;
      border: 1px solid rgba(247,244,239,0.28);
      pointer-events: none;
    }
    .frame img { width: 100%; height: 460px; object-fit: cover; }
    .cut-label {
      position: absolute;
      left: 16px;
      bottom: 16px;
      z-index: 2;
      background: rgba(28,22,18,0.82);
      color: #fff;
      padding: 8px 10px;
      font-size: 12px;
      font-family: var(--mono);
      border-left: 3px solid var(--amber);
    }
    .intro-copy h2 { font-size: 32px; line-height: 1.3; margin: 8px 0 14px; }
    .intro-copy > p { color: var(--muted); margin-bottom: 20px; }
    .param-table {
      width: 100%;
      border-collapse: collapse;
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      overflow: hidden;
    }
    .param-table th, .param-table td {
      text-align: left;
      padding: 11px 14px;
      border-bottom: 1px solid var(--line);
      font-size: 14px;
    }
    .param-table th {
      width: 28%;
      background: #ebe4d8;
      color: var(--slag);
      font-weight: 650;
    }
    .param-table td { font-family: var(--mono); }
    .param-table tr:last-child th, .param-table tr:last-child td { border-bottom: 0; }
    #functions { background: var(--dust); }
    .func-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .func-card {
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 22px 20px 18px;
      box-shadow: var(--shadow-tight);
      transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
    }
    .func-card:hover {
      transform: translateY(-3px);
      border-color: var(--ore);
      box-shadow: var(--shadow);
    }
    .icon-line {
      width: 44px;
      height: 44px;
      display: grid;
      place-items: center;
      border: 1px solid var(--line);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      background: #f3ece3;
    }
    .icon-line svg { width: 24px; height: 24px; stroke: var(--ore); fill: none; stroke-width: 1.7; }
    .func-card h3 { font-size: 20px; margin-bottom: 10px; }
    .func-card ul { list-style: none; }
    .func-card li {
      position: relative;
      padding-left: 14px;
      font-size: 14px;
      color: var(--muted);
      line-height: 1.7;
      margin-bottom: 4px;
    }
    .func-card li::before {
      content: "";
      width: 6px;
      height: 6px;
      background: var(--ore);
      position: absolute;
      left: 0;
      top: 0.65em;
    }
    .func-card .more {
      display: inline-flex;
      align-items: center;
      min-height: 44px;
      color: var(--ore-deep);
      font-weight: 700;
      font-size: 14px;
    }
    #hot { background: var(--paper); }
    .hot-grid {
      display: grid;
      grid-template-columns: 0.92fr 1.16fr 0.92fr;
      gap: 18px;
      align-items: stretch;
    }
    .product-card {
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-tight);
      display: flex;
      flex-direction: column;
      transition: transform .18s ease, border-color .18s ease;
    }
    .product-card:hover { transform: translateY(-4px); border-color: var(--ore); }
    .product-card img { width: 100%; height: 210px; object-fit: cover; }
    .product-card.is-feature {
      transform: translateY(-10px);
      border-color: var(--ore);
      box-shadow: 0 14px 28px rgba(122, 52, 32, 0.18);
    }
    .product-card.is-feature img { height: 250px; }
    .product-body { padding: 18px 18px 16px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
    .product-body h3 { font-size: 22px; }
    .product-body p { color: var(--muted); font-size: 14px; }
    .param-bar {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      border-top: 1px solid var(--line);
      background: #efe8dc;
      font-family: var(--mono);
      font-size: 12px;
    }
    .param-bar span {
      padding: 10px 8px;
      text-align: center;
      border-right: 1px solid var(--line);
    }
    .param-bar span:last-child { border-right: 0; }
    .product-body .btn { margin-top: auto; }
    #scenes { background: var(--dust); }
    .scene-board {
      display: grid;
      grid-template-columns: 1.4fr 1fr;
      grid-template-rows: auto auto;
      gap: 16px;
    }
    .scene-card {
      position: relative;
      min-height: 230px;
      overflow: hidden;
      border-radius: var(--radius);
      color: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow-tight);
    }
    .scene-card img {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .scene-card .shade {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(16,13,11,0.18), rgba(16,13,11,0.82));
    }
    .scene-card .txt {
      position: relative;
      z-index: 1;
      padding: 22px;
      height: 100%;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
    }
    .scene-wide { grid-row: span 2; min-height: 480px; }
    .scene-card h3 { font-size: 24px; margin-bottom: 8px; }
    .scene-card p { color: #e6ddd3; font-size: 14px; max-width: 46ch; }
    .scene-card a {
      margin-top: 12px;
      display: inline-flex;
      align-items: center;
      min-height: 44px;
      font-weight: 700;
      color: #ffd27a;
    }
    #demo { background: var(--paper); }
    .tabs {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      margin-bottom: 18px;
    }
    .tab {
      min-height: 44px;
      padding: 0 16px;
      border: 1px solid var(--line);
      background: #efe8dc;
      border-radius: var(--radius-sm);
      color: var(--slag);
      font-weight: 650;
    }
    .tab.is-active {
      background: var(--ore);
      color: #fff;
      border-color: var(--ore);
    }
    .demo-panel { display: none; }
    .demo-panel.is-active { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 24px; align-items: center; }
    .demo-shot {
      position: relative;
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
    }
    .demo-shot img { width: 100%; height: 420px; object-fit: cover; }
    .callout {
      position: absolute;
      background: rgba(28,22,18,0.86);
      color: #fff;
      padding: 8px 10px;
      font-size: 12px;
      font-family: var(--mono);
      border-left: 3px solid var(--amber);
    }
    .demo-note {
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 22px;
    }
    .demo-note h3 { font-size: 22px; margin-bottom: 10px; }
    .demo-note p { color: var(--muted); margin-bottom: 14px; }
    .demo-note li {
      list-style: none;
      padding: 8px 0;
      border-bottom: 1px dashed var(--line);
      font-size: 14px;
    }
    #cases {
      background:
        linear-gradient(90deg, transparent 0 46%, var(--vein) 50%, transparent 54%),
        var(--graphite);
      color: #f4eee6;
    }
    #cases .section-head p { color: #cfc4b8; }
    .case-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 18px;
    }
    .case-main, .case-side article {
      background: #26211e;
      border: 1px solid rgba(201,192,180,0.14);
      border-radius: var(--radius);
      overflow: hidden;
    }
    .case-main img { width: 100%; height: 280px; object-fit: cover; }
    .case-side { display: grid; gap: 18px; }
    .case-side img { width: 100%; height: 120px; object-fit: cover; }
    .case-body { padding: 18px; }
    .case-body h3 { font-size: 22px; margin-bottom: 8px; }
    .case-body p { color: #d8cdc2; font-size: 14px; }
    .principles {
      margin-top: 28px;
      display: grid;
      grid-template-columns: 0.8fr 1.2fr;
      gap: 18px;
      align-items: stretch;
    }
    .quote-block {
      border-left: 3px solid var(--ore);
      padding: 8px 0 8px 18px;
      font-size: 22px;
      line-height: 1.45;
    }
    .principle-list {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
    }
    .principle-list div {
      border: 1px solid rgba(201,192,180,0.16);
      padding: 16px;
      border-radius: var(--radius);
      background: rgba(255,255,255,0.03);
    }
    .principle-list h4 { font-size: 16px; margin-bottom: 8px; }
    .principle-list p { font-size: 13px; color: #d5c9bd; }
    #pricing { background: var(--dust); }
    .price-table-wrap {
      overflow-x: auto;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--card);
      box-shadow: var(--shadow-tight);
    }
    .price-table {
      width: 100%;
      min-width: 760px;
      border-collapse: collapse;
    }
    .price-table th, .price-table td {
      padding: 16px 14px;
      text-align: left;
      border-bottom: 1px solid var(--line);
      vertical-align: top;
      font-size: 14px;
    }
    .price-table thead th {
      background: #ebe4d8;
      font-size: 18px;
    }
    .price-table thead th.rec {
      background: var(--ore);
      color: #fff;
    }
    .price-table td.rec { background: #f7efe6; border-left: 2px solid var(--ore); border-right: 2px solid var(--ore); }
    .price-table .fee {
      font-family: var(--mono);
      font-size: 22px;
      font-weight: 760;
      color: var(--ore-deep);
    }
    .rec-flag {
      display: inline-block;
      margin-left: 8px;
      font-size: 12px;
      background: var(--amber);
      color: var(--amber-ink);
      padding: 2px 8px;
      border-radius: 3px;
      vertical-align: middle;
    }
    #stories { background: var(--paper); }
    .story-layout {
      display: grid;
      grid-template-columns: 1.25fr 0.75fr;
      gap: 18px;
    }
    .story-main {
      display: grid;
      grid-template-columns: 1fr 1fr;
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow);
    }
    .story-main img { width: 100%; height: 100%; min-height: 340px; object-fit: cover; }
    .story-text { padding: 26px; }
    .story-text blockquote {
      margin: 0 0 14px;
      font-size: 20px;
      line-height: 1.55;
    }
    .story-text p { color: var(--muted); font-size: 14px; }
    .role { margin-top: 16px; font-size: 13px; color: var(--slag); font-weight: 700; }
    .story-side { display: grid; gap: 18px; }
    .story-side article {
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 18px;
    }
    .story-side h3 { font-size: 18px; margin-bottom: 8px; }
    .story-side p { color: var(--muted); font-size: 14px; }
    #stats {
      background: var(--slag);
      color: #fff;
      padding: 42px 0;
    }
    .stat-row {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 12px;
    }
    .stat {
      text-align: left;
      padding: 8px 8px 8px 14px;
      border-left: 2px solid var(--ore);
    }
    .stat b {
      display: block;
      font-size: 34px;
      font-family: var(--mono);
      line-height: 1.1;
    }
    .stat span { font-size: 13px; color: #ddd3c8; }
    #reviews { background: var(--dust); }
    .review-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 14px;
    }
    .review {
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 18px 16px 14px;
      min-height: 210px;
      box-shadow: var(--shadow-tight);
    }
    .review::before {
      content: "“";
      display: block;
      font-size: 36px;
      line-height: 0.8;
      color: var(--ore);
      font-family: Georgia, serif;
      margin-bottom: 8px;
    }
    .review p { font-size: 14px; color: var(--ink); min-height: 84px; }
    .review-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 8px;
      margin-top: 12px;
      font-size: 12px;
      color: var(--muted);
    }
    .stars { color: var(--amber); letter-spacing: 1px; }
    #voice { background: var(--paper); }
    .logo-wall {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 10px;
      margin-bottom: 22px;
    }
    .logo-wall span {
      min-height: 54px;
      display: grid;
      place-items: center;
      border: 1px dashed var(--line);
      background: #efe8dc;
      font-size: 13px;
      color: var(--slag);
      border-radius: var(--radius-sm);
      text-align: center;
      padding: 6px;
    }
    .oral-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .oral {
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 22px;
    }
    .oral h3 { font-size: 18px; margin-bottom: 10px; }
    .oral p { color: var(--muted); font-size: 15px; }
    .audio-fake {
      margin-top: 14px;
      min-height: 44px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 0 12px;
      border: 1px solid var(--line);
      border-radius: var(--radius-sm);
      color: var(--slag);
      font-size: 13px;
    }
    #spares { background: var(--dust); }
    .spare-layout {
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
      gap: 28px;
      align-items: center;
    }
    .spare-layout img {
      width: 100%;
      height: 420px;
      object-fit: cover;
      border-radius: var(--radius);
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
    }
    .timeline { list-style: none; }
    .timeline li {
      display: grid;
      grid-template-columns: 92px 1fr;
      gap: 14px;
      padding: 0 0 22px 0;
      position: relative;
    }
    .timeline li::before {
      content: "";
      position: absolute;
      left: 80px;
      top: 10px;
      bottom: -6px;
      width: 1px;
      background: var(--line);
    }
    .timeline li:last-child::before { display: none; }
    .timeline .t {
      font-family: var(--mono);
      color: var(--ore-deep);
      font-weight: 700;
    }
    .timeline h3 { font-size: 18px; margin-bottom: 4px; }
    .timeline p { color: var(--muted); font-size: 14px; }
    #news { background: var(--paper); }
    .news-list { display: grid; gap: 12px; }
    .news-item {
      display: grid;
      grid-template-columns: 160px 1fr auto;
      gap: 16px;
      align-items: center;
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      overflow: hidden;
      min-height: 112px;
    }
    .news-item img { width: 160px; height: 112px; object-fit: cover; }
    .news-item h3 { font-size: 18px; margin-bottom: 6px; }
    .news-item p { color: var(--muted); font-size: 14px; }
    .news-date { font-family: var(--mono); font-size: 13px; color: var(--ore-deep); padding-right: 18px; }
    .more-link {
      display: inline-flex;
      align-items: center;
      min-height: 44px;
      margin-top: 16px;
      font-weight: 700;
      color: var(--ore-deep);
    }
    #faq { background: var(--dust); }
    .faq-list { border-top: 1px solid var(--slag); }
    .faq-item { border-bottom: 1px solid var(--slag); background: var(--card); }
    .faq-item button {
      width: 100%;
      min-height: 56px;
      text-align: left;
      padding: 14px 18px;
      font-size: 16px;
      font-weight: 700;
      display: flex;
      justify-content: space-between;
      gap: 12px;
      color: var(--ink);
    }
    .faq-item button span.sign { color: var(--ore); font-family: var(--mono); }
    .faq-item .ans {
      display: none;
      padding: 0 18px 16px;
      color: var(--muted);
      background: #efe8dc;
      line-height: 1.8;
    }
    .faq-item.is-open .ans { display: block; }
    #contact {
      background:
        linear-gradient(135deg, #2a221e 0 62%, #3d2b24 62% 63%, #1c1a18 63%),
        var(--graphite);
      color: #f4eee6;
    }
    .cta-grid {
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
      gap: 32px;
      align-items: start;
    }
    .cta-copy h2 { font-size: 34px; margin: 8px 0 14px; }
    .cta-copy p { color: #d8cdc2; margin-bottom: 18px; }
    .cta-contacts a {
      display: flex;
      align-items: center;
      min-height: 44px;
      color: #ffe1b0;
      font-weight: 700;
    }
    .quote-form {
      background: #f7f1e8;
      color: var(--ink);
      padding: 24px;
      border-radius: var(--radius);
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
    }
    .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(--slag); }
    .field input, .field textarea, .field select {
      min-height: 44px;
      border: 1px solid var(--line);
      border-radius: var(--radius-sm);
      padding: 8px 10px;
      background: #fff;
      color: var(--ink);
    }
    .field textarea { min-height: 96px; resize: vertical; }
    .field input.is-err, .field textarea.is-err, .field select.is-err { border-color: var(--iron-red); }
    .field input.is-ok { border-color: var(--ore); }
    .form-tip { font-size: 13px; color: var(--muted); margin: 8px 0 0; }
    .form-success {
      display: none;
      padding: 18px;
      background: #e8f0e4;
      border: 1px solid #9cbf96;
      color: var(--ok);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
    }
    .form-success.is-show { display: block; }
    .site-footer {
      background: #161310;
      color: #d8cdc2;
      padding: 56px 0 22px;
    }
    .foot-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr 1fr 1fr;
      gap: 28px;
      padding-bottom: 28px;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .site-footer h3 { color: #fff; font-size: 16px; margin-bottom: 12px; }
    .site-footer p, .site-footer li { font-size: 14px; line-height: 1.8; }
    .site-footer ul { list-style: none; }
    .site-footer a { color: #eadfcf; }
    .site-footer a:hover { color: #fff; }
    .copy {
      padding-top: 16px;
      font-size: 13px;
      color: #b5aaa0;
      display: flex;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
    }
    .grain::before {
      content: "";
      position: absolute;
      inset: 0;
      pointer-events: none;
      opacity: 0.05;
      background-image: radial-gradient(#000 0.6px, transparent 0.7px);
      background-size: 3px 3px;
    }
    @media (max-width: 1440px) {
      .hero h1, .hero-copy h2 { font-size: 52px; }
    }
    @media (max-width: 1024px) {
      .container { width: min(1240px, calc(100% - 32px)); }
      .nav-links { display: none; }
      .nav-cta { display: none; }
      .menu-toggle { display: inline-flex; }
      .drawer.is-open { display: block; }
      .hero-magazine { grid-template-columns: 1fr; padding: 36px 0 92px; }
      .hero-stage { min-height: 980px; }
      .hero h1, .hero-copy h2 { font-size: 40px; }
      .intro-grid, .demo-panel.is-active, .case-grid, .principles, .story-layout, .spare-layout, .cta-grid, .foot-grid {
        grid-template-columns: 1fr;
      }
      .func-grid, .review-grid { grid-template-columns: repeat(2, 1fr); }
      .hot-grid { grid-template-columns: 1fr; }
      .product-card.is-feature { transform: none; }
      .scene-board { grid-template-columns: 1fr; }
      .scene-wide { grid-row: auto; min-height: 320px; }
      .stat-row { grid-template-columns: repeat(3, 1fr); }
      .logo-wall { grid-template-columns: repeat(3, 1fr); }
      .story-main { grid-template-columns: 1fr; }
      .news-item { grid-template-columns: 140px 1fr; }
      .news-date { padding: 0 0 12px 0; grid-column: 2; }
      .principle-list { grid-template-columns: 1fr; }
    }
    @media (max-width: 768px) {
      .topbar { display: none; }
      .hero h1, .hero-copy h2 { font-size: 34px; }
      .section { padding: 64px 0; }
      .section-head h2, .intro-copy h2, .cta-copy h2 { font-size: 28px; }
      .func-grid, .review-grid, .oral-grid, .form-grid, .stat-row { grid-template-columns: 1fr; }
      .frame img, .demo-shot img, .spare-layout img { height: 260px; }
      .pick-card { grid-template-columns: 96px 1fr; }
      .hero-stage { min-height: 1080px; }
      .copy { flex-direction: column; }
    }
    @media (max-width: 520px) {
      .container { width: calc(100% - 28px); }
      .hero-magazine { padding-top: 28px; }
      .hero h1, .hero-copy h2 { font-size: 32px; }
      .brand-name { font-size: 16px; }
      .logo-wall { grid-template-columns: repeat(2, 1fr); }
      .news-item { grid-template-columns: 1fr; }
      .news-item img { width: 100%; height: 180px; }
      .param-bar { grid-template-columns: 1fr; }
      .param-bar span { border-right: 0; border-bottom: 1px solid var(--line); }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
      }
    }