/* roulang page: index */
:root {
      --bg: #F6F1E8;
      --bg-alt: #E7F1EE;
      --surface: #FFFdf8;
      --ink: #1A2B28;
      --ink-soft: #4A5C58;
      --primary: #0F6E6B;
      --primary-ink: #083D3B;
      --accent: #C45C26;
      --accent-2: #C9A227;
      --dark: #0C3331;
      --line: #D9E3DF;
      --shadow: 0 10px 30px rgba(15,110,107,.08);
      --shadow-hover: 0 16px 36px rgba(15,110,107,.14);
      --danger: #9B2C2C;
      --radius-card: 14px;
      --radius-btn: 8px;
      --radius-badge: 4px;
      --radius-input: 8px;
      --container: 1220px;
      --topbar: 38px;
      --navh: 72px;
      --space: 88px;
      --gutter: 32px;
      --font-serif: "Noto Serif SC", "Songti SC", serif;
      --font-sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --ease: cubic-bezier(.22,.61,.36,1);
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    html, body { margin: 0; padding: 0; }
    body {
      font-family: var(--font-sans);
      font-size: 16.5px;
      line-height: 1.75;
      color: var(--ink);
      background: var(--bg);
      min-height: 100%;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--primary); text-decoration: none; transition: color .2s var(--ease), opacity .2s; }
    a:hover { color: var(--primary-ink); }
    button, input, select, textarea { font-family: inherit; font-size: inherit; }
    button { cursor: pointer; }
    h1, h2, h3, h4 { font-family: var(--font-serif); color: var(--primary-ink); line-height: 1.28; margin: 0 0 16px; font-weight: 700; }
    h1 { font-size: clamp(30px, 4.8vw, 50px); }
    h2 { font-size: clamp(28px, 3vw, 34px); }
    h3 { font-size: 21px; }
    p { margin: 0 0 1.15em; }
    ul { margin: 0; padding: 0; list-style: none; }
    :focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
    button:focus:not(:focus-visible), a:focus:not(:focus-visible) { outline: none; }
    .container { width: min(100% - 40px, var(--container)); margin: 0 auto; }
    .skip { position: absolute; left: -999px; top: 0; }
    .skip:focus { left: 16px; top: 16px; background: #fff; padding: 8px 12px; z-index: 200; }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 80;
      background: var(--surface);
      box-shadow: 0 1px 0 var(--line);
    }
    .topbar {
      height: var(--topbar);
      background: var(--bg-alt);
      color: var(--ink-soft);
      font-size: 12.5px;
      display: flex;
      align-items: center;
      transition: margin-top .28s var(--ease), opacity .28s var(--ease);
      overflow: hidden;
    }
    .topbar .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      width: min(100% - 32px, var(--container));
    }
    .topbar a { color: var(--ink-soft); }
    .topbar a:hover { color: var(--primary-ink); }
    .topbar-left, .topbar-right { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
    .topbar svg { width: 14px; height: 14px; vertical-align: -2px; margin-right: 4px; }
    body.topbar-hidden .topbar {
      margin-top: calc(-1 * var(--topbar));
      opacity: 0;
      pointer-events: none;
    }
    .nav-main { height: var(--navh); background: var(--surface); }
    .nav-main .container {
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }
    .logo { display: flex; align-items: center; gap: 10px; color: var(--primary-ink); min-height: 44px; }
    .logo-mark {
      width: 40px; height: 40px; border-radius: 8px;
      background: var(--primary);
      color: #fff;
      display: grid; place-items: center;
      font-family: var(--font-serif);
      font-weight: 700; font-size: 18px;
    }
    .logo-text { display: flex; flex-direction: column; line-height: 1.15; }
    .logo-text strong { font-family: var(--font-serif); font-size: 18px; letter-spacing: .04em; }
    .logo-text em { font-style: normal; font-size: 12px; color: var(--primary); font-weight: 500; letter-spacing: .08em; }
    .nav-links { display: flex; align-items: center; gap: 4px; }
    .nav-links a {
      color: var(--ink);
      font-size: 15px;
      font-weight: 500;
      padding: 8px 10px;
      min-height: 44px;
      display: inline-flex; align-items: center;
      position: relative;
    }
    .nav-links a:hover { color: var(--primary); }
    .nav-links a.active { color: var(--primary-ink); }
    .nav-links a.active::after {
      content: "";
      position: absolute; left: 10px; right: 10px; bottom: 6px;
      height: 2px; background: var(--accent); border-radius: 2px;
    }
    .nav-cta { display: flex; align-items: center; gap: 10px; }
    .menu-toggle {
      display: none;
      width: 44px; height: 44px;
      border: 1px solid var(--line);
      background: var(--surface);
      border-radius: var(--radius-btn);
      align-items: center; justify-content: center;
      flex-direction: column; gap: 5px;
    }
    .menu-toggle span {
      display: block; width: 18px; height: 2px; background: var(--ink); border-radius: 2px;
      transition: transform .2s, opacity .2s;
    }
    body.nav-open .menu-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    body.nav-open .menu-toggle span:nth-child(2) { opacity: 0; }
    body.nav-open .menu-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    .nav-drawer, .nav-mask { display: none; }
    .btn {
      display: inline-flex; align-items: center; justify-content: center;
      min-height: 44px; padding: 0 18px;
      border-radius: var(--radius-btn);
      border: 1.5px solid transparent;
      font-weight: 600; letter-spacing: .02em;
      transition: transform .2s var(--ease), box-shadow .2s, background .2s, color .2s, border-color .2s;
      text-decoration: none;
    }
    .btn:hover { transform: translateY(-2px); }
    .btn:active { transform: translateY(0); }
    .btn-accent { background: var(--accent); color: #fff; box-shadow: 0 8px 18px rgba(196,92,38,.22); }
    .btn-accent:hover { background: #A94C1D; color: #fff; }
    .btn-ghost { background: transparent; color: var(--primary); border-color: var(--primary); }
    .btn-ghost:hover { background: rgba(15,110,107,.08); color: var(--primary-ink); }
    .btn-light { background: transparent; color: #fff; border-color: rgba(255,255,255,.55); }
    .btn-light:hover { background: rgba(255,255,255,.1); color: #fff; }
    .btn-block { width: 100%; }
    .badge {
      display: inline-flex; align-items: center;
      padding: 2px 8px; border-radius: var(--radius-badge);
      background: var(--accent-2); color: #3A2E08;
      font-size: 12px; font-weight: 700; letter-spacing: .04em;
    }
    .tag {
      display: inline-flex; align-items: center;
      padding: 3px 9px; border-radius: 999px;
      background: var(--bg-alt); color: var(--primary-ink);
      font-size: 12px; font-weight: 600;
    }
    .sec {
      padding: var(--space) 0;
      position: relative;
    }
    .sec-alt { background: var(--bg-alt); }
    .sec-surface { background: var(--surface); }
    .sec-head { max-width: 760px; margin-bottom: 40px; }
    .sec-title {
      padding-left: 14px;
      border-left: 4px solid var(--accent);
      margin-bottom: 14px;
    }
    .sec-lead { color: var(--ink-soft); font-size: 16.5px; margin: 0; }
    .paper::before {
      content: "";
      position: absolute; inset: 0; pointer-events: none;
      background-image: repeating-linear-gradient(transparent, transparent 31px, rgba(26,43,40,.035) 32px);
    }

    .hero-carousel {
      position: relative;
      min-height: 88vh;
      overflow: hidden;
      background: var(--dark);
      color: #fff;
    }
    .hero-track {
      display: flex; height: 88vh; min-height: 620px;
      transition: transform .7s var(--ease);
    }
    .slide {
      min-width: 100%; height: 100%;
      position: relative;
      background: var(--dark) center/cover no-repeat;
    }
    .slide::after {
      content: "";
      position: absolute; inset: 0;
      background: linear-gradient(115deg, rgba(12,51,49,.86) 0%, rgba(12,51,49,.52) 46%, rgba(12,51,49,.18) 100%);
    }
    .slide-inner {
      position: relative; z-index: 2;
      height: 100%;
      display: flex; align-items: center;
      width: min(100% - 40px, var(--container));
      margin: 0 auto;
    }
    .slide-copy { max-width: 680px; }
    .hero-brand {
      display: inline-flex; align-items: center; gap: 8px;
      color: #E7F1EE; font-size: 13px; letter-spacing: .16em;
      margin-bottom: 18px; font-weight: 600;
    }
    .hero-brand i {
      width: 8px; height: 8px; border-radius: 50%; background: var(--accent); display: inline-block; font-style: normal;
    }
    .hero h1, .slide-title {
      font-family: var(--font-serif);
      font-size: clamp(30px, 4.6vw, 50px);
      line-height: 1.22; color: #fff; font-weight: 700; margin: 0 0 18px;
    }
    .hero-intro { color: rgba(255,255,255,.9); font-size: 16.5px; margin-bottom: 28px; }
    .hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
    .play-btn {
      width: 56px; height: 56px; border-radius: 50%;
      border: 0; background: var(--accent); color: #fff;
      display: inline-grid; place-items: center;
      box-shadow: 0 10px 24px rgba(196,92,38,.35);
    }
    .play-btn:hover { transform: scale(1.06); }
    .play-btn svg { margin-left: 3px; }
    .hero-nav {
      position: absolute; z-index: 3; inset: 0;
      pointer-events: none;
    }
    .hero-arrow {
      pointer-events: auto;
      position: absolute; top: 50%; transform: translateY(-50%);
      width: 44px; height: 44px; border-radius: 8px;
      border: 1px solid rgba(255,255,255,.35);
      background: rgba(12,51,49,.35); color: #fff;
      display: grid; place-items: center;
    }
    .hero-arrow.prev { left: 18px; }
    .hero-arrow.next { right: 18px; }
    .hero-arrow:hover { background: rgba(12,51,49,.7); }
    .hero-dots {
      pointer-events: auto;
      position: absolute; left: 50%; bottom: 28px; transform: translateX(-50%);
      display: flex; gap: 8px;
    }
    .hero-dots button {
      width: 10px; height: 10px; border-radius: 50%;
      border: 0; background: rgba(255,255,255,.4); padding: 0;
    }
    .hero-dots button[aria-current="true"] { background: var(--accent); width: 22px; border-radius: 8px; }

    .intro-grid {
      display: grid;
      grid-template-columns: 1.05fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .intro-media {
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow);
      border: 1px solid var(--line);
    }
    .intro-media img { width: 100%; height: 100%; object-fit: cover; min-height: 420px; }
    .spec-list {
      display: grid; grid-template-columns: 1fr 1fr;
      gap: 12px 18px; margin-top: 22px;
    }
    .spec-list div {
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: 10px;
      padding: 12px 14px;
    }
    .spec-list dt { font-size: 12px; color: var(--ink-soft); margin-bottom: 2px; }
    .spec-list dd { margin: 0; font-weight: 700; color: var(--primary-ink); font-family: var(--font-serif); }

    .bento-6 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .bento-card {
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: var(--radius-card);
      padding: 26px;
      box-shadow: var(--shadow);
      display: flex; flex-direction: column;
      gap: 12px;
      transition: transform .22s var(--ease), box-shadow .22s, border-color .22s;
    }
    .bento-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(15,110,107,.28);
    }
    .bento-card.span-2 { grid-column: span 2; min-height: 280px; }
    .bento-card .icon {
      width: 44px; height: 44px; border-radius: 10px;
      background: var(--bg-alt); color: var(--primary);
      display: grid; place-items: center; flex-shrink: 0;
    }
    .bento-card.alt { flex-direction: row; align-items: flex-start; }
    .bento-card h3 { margin: 0; }
    .bento-card p { color: var(--ink-soft); margin: 0; font-size: 15.5px; }
    .card-link { color: var(--accent); font-weight: 700; font-size: 14px; margin-top: auto; }
    .card-link:hover { color: #A94C1D; }

    .scene-board {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 18px;
    }
    .scene-card {
      position: relative; overflow: hidden;
      border-radius: var(--radius-card);
      min-height: 280px;
      color: #fff;
      background: var(--dark) center/cover no-repeat;
      border: 1px solid var(--line);
    }
    .scene-card::after {
      content: ""; position: absolute; inset: 0;
      background: linear-gradient(180deg, rgba(12,51,49,.18) 0%, rgba(12,51,49,.82) 100%);
    }
    .scene-card.shift { margin-top: 36px; }
    .scene-body { position: relative; z-index: 1; padding: 28px; height: 100%; display: flex; flex-direction: column; justify-content: flex-end; }
    .scene-body h3 { color: #fff; }
    .scene-body ul { color: rgba(255,255,255,.9); font-size: 15px; display: grid; gap: 6px; }
    .scene-body li::before { content: "· "; color: var(--accent-2); font-weight: 700; }
    .scene-link { color: #fff; font-weight: 700; margin-top: 12px; }

    .demo-tabs { display: grid; grid-template-columns: 280px 1fr; gap: 28px; align-items: start; }
    .tab-list { display: flex; flex-direction: column; gap: 10px; }
    .tab-btn {
      text-align: left; background: var(--surface); border: 1px solid var(--line);
      border-radius: 10px; padding: 16px 18px; color: var(--ink); min-height: 64px;
    }
    .tab-btn strong { display: block; font-size: 16px; color: var(--primary-ink); }
    .tab-btn span { color: var(--ink-soft); font-size: 13px; }
    .tab-btn[aria-selected="true"] {
      background: var(--primary); color: #fff; border-color: var(--primary);
    }
    .tab-btn[aria-selected="true"] strong, .tab-btn[aria-selected="true"] span { color: #fff; }
    .demo-stage {
      background: var(--surface); border: 1px solid var(--line);
      border-radius: var(--radius-card); overflow: hidden; box-shadow: var(--shadow);
    }
    .demo-stage img { width: 100%; height: 460px; object-fit: cover; }
    .steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 22px; }
    .step {
      background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 18px;
    }
    .num {
      width: 32px; height: 32px; border-radius: 50%;
      background: var(--primary); color: #fff; display: grid; place-items: center;
      font-weight: 700; margin-bottom: 10px;
    }

    .product-spotlight { display: grid; grid-template-columns: 7fr 5fr; gap: 18px; }
    .product-main, .product-side article {
      background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-card);
      overflow: hidden; box-shadow: var(--shadow);
    }
    .product-side { display: grid; gap: 18px; }
    .product-main img { width: 100%; height: 280px; object-fit: cover; }
    .product-side img { width: 100%; height: 140px; object-fit: cover; }
    .product-body { padding: 22px 24px 26px; }
    .product-body ul { display: grid; gap: 8px; color: var(--ink-soft); margin: 12px 0 18px; }
    .product-body li { padding-left: 16px; position: relative; }
    .product-body li::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--primary); position: absolute; left: 0; top: 9px; }
    .price-hint { font-size: 13px; color: var(--ink-soft); margin-bottom: 14px; }

    .path-grid { display: grid; grid-template-columns: 280px 1fr; gap: 24px; }
    .path-index { display: grid; gap: 8px; }
    .path-index button {
      text-align: left; border: 1px solid var(--line); background: var(--surface);
      border-radius: 10px; padding: 14px 16px; min-height: 48px; color: var(--ink);
      position: relative;
    }
    .path-index button::before {
      content: ""; position: absolute; left: 0; top: 12px; bottom: 12px; width: 3px;
      background: transparent; border-radius: 2px;
    }
    .path-index button[aria-selected="true"] { border-color: var(--primary); background: var(--bg-alt); }
    .path-index button[aria-selected="true"]::before { background: var(--accent); }
    .path-panel {
      background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-card);
      overflow: hidden; display: grid; grid-template-columns: 1fr 240px;
    }
    .path-panel .copy { padding: 28px; }
    .path-panel img { width: 100%; height: 100%; object-fit: cover; min-height: 240px; }

    .dark-cases { background: var(--dark); color: #E7F1EE; overflow: hidden; }
    .dark-cases .sec-title, .dark-cases h3 { color: #fff; }
    .dark-cases .sec-lead { color: rgba(255,255,255,.78); }
    .cases-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 36px; align-items: start; }
    .case-list { display: grid; gap: 14px; }
    .case-item {
      background: rgba(255,253,248,.06);
      border: 1px solid rgba(217,227,223,.18);
      border-radius: 12px; padding: 18px 20px;
    }
    .case-item strong { display: block; color: var(--accent-2); margin-bottom: 6px; font-size: 13px; letter-spacing: .08em; }
    .metric { font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace; font-weight: 700; color: #fff; }

    .story-grid { display: grid; grid-template-columns: 1.4fr .8fr .8fr; gap: 18px; }
    .story-card {
      background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-card);
      padding: 26px; box-shadow: var(--shadow);
    }
    .story-card.main { background: linear-gradient(180deg, #FFFdf8 0%, #E7F1EE 100%); }
    blockquote { margin: 0 0 18px; font-family: var(--font-serif); font-size: 22px; line-height: 1.5; color: var(--primary-ink); }
    .who { color: var(--ink-soft); font-size: 14px; }

    .stat-bar {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
    }
    .stat {
      background: var(--surface); border: 1px solid var(--line); border-radius: 14px;
      padding: 26px 18px; text-align: center; box-shadow: var(--shadow);
    }
    .stat b {
      display: block; font-size: 40px; letter-spacing: -.03em;
      font-variant-numeric: tabular-nums; font-family: ui-monospace, Menlo, Consolas, monospace;
      color: var(--primary-ink);
    }
    .stat span { color: var(--ink-soft); font-size: 13px; }

    .price-tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; align-items: stretch; }
    .tier {
      background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-card);
      padding: 28px 24px; box-shadow: var(--shadow);
    }
    .tier.featured {
      transform: scale(1.04); border: 2px solid var(--primary); position: relative; z-index: 1;
      box-shadow: var(--shadow-hover);
    }
    .tier ul { margin: 16px 0 22px; display: grid; gap: 8px; color: var(--ink-soft); }
    .tier .yen { font-family: var(--font-serif); font-size: 32px; color: var(--primary-ink); margin: 8px 0; }
    .tier .yen small { font-size: 14px; color: var(--ink-soft); font-family: var(--font-sans); }
    .note { font-size: 12.5px; color: var(--ink-soft); margin-top: 10px; }

    .review-masonry {
      columns: 3; column-gap: 16px;
    }
    .review {
      break-inside: avoid; margin-bottom: 16px;
      background: var(--surface); border: 1px solid var(--line);
      border-radius: 14px; padding: 18px 18px 16px; box-shadow: var(--shadow);
    }
    .review:nth-child(odd) { transform: rotate(-.8deg); }
    .review:nth-child(even) { transform: rotate(.7deg); }
    .stars { color: var(--accent); letter-spacing: 2px; font-size: 13px; margin-bottom: 8px; }
    .review p { margin: 0 0 10px; font-size: 15px; }
    .review .who { font-weight: 600; }

    .voice-table { width: 100%; border-collapse: collapse; background: var(--surface); border-radius: 14px; overflow: hidden; }
    .voice-table th, .voice-table td { padding: 14px 16px; border-bottom: 1px solid var(--line); text-align: left; }
    .voice-table th { background: var(--bg-alt); color: var(--primary-ink); font-weight: 700; }
    .quote-row { margin-top: 22px; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .quote-row article {
      border-left: 4px solid var(--accent); padding: 8px 0 8px 16px; color: var(--ink-soft);
    }

    .news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
    .news-card {
      background: var(--surface); border: 1px solid var(--line); border-radius: 14px; overflow: hidden;
      box-shadow: var(--shadow); display: flex; flex-direction: column;
    }
    .news-card img { width: 100%; height: 150px; object-fit: cover; }
    .news-card .copy { padding: 16px 16px 18px; }
    .news-card time { font-size: 12px; color: var(--ink-soft); }
    .news-card p { font-size: 14.5px; color: var(--ink-soft); margin: 8px 0 0; }

    .faq-acc { display: grid; gap: 10px; }
    .faq-item { border: 1px solid var(--line); border-radius: 12px; background: var(--surface); overflow: hidden; }
    .faq-item button {
      width: 100%; text-align: left; background: transparent; border: 0;
      padding: 16px 18px; min-height: 56px; display: flex; justify-content: space-between; gap: 12px;
      font-weight: 700; color: var(--primary-ink);
    }
    .faq-item .sign { color: var(--accent); font-size: 20px; line-height: 1; }
    .faq-item .panel { display: none; padding: 0 18px 18px; color: var(--ink-soft); }
    .faq-item.open { background: var(--bg-alt); }
    .faq-item.open .panel { display: block; }
    .faq-item.open .sign { transform: rotate(45deg); }

    .cta-panel { background: var(--dark); color: #fff; }
    .cta-panel .sec-title, .cta-panel h2 { color: #fff; }
    .cta-wrap { display: grid; grid-template-columns: 1fr .85fr; gap: 40px; align-items: start; }
    form { display: grid; gap: 12px; }
    label { font-size: 13px; font-weight: 600; color: #E7F1EE; }
    input, select, textarea {
      width: 100%; border: 1px solid rgba(217,227,223,.3); background: rgba(255,253,248,.08);
      color: #fff; border-radius: var(--radius-input); padding: 11px 12px; min-height: 44px;
    }
    textarea { min-height: 96px; resize: vertical; }
    .err { color: #F8C7C7; font-size: 12.5px; display: none; }
    .field.invalid .err { display: block; }
    .field.invalid input, .field.invalid select { border-color: #E07A7A; }
    .form-ok { display: none; background: rgba(231,241,238,.14); border: 1px solid rgba(231,241,238,.3); padding: 12px 14px; border-radius: 8px; }
    .contact-side { background: rgba(255,253,248,.06); border: 1px solid rgba(217,227,223,.16); border-radius: 14px; padding: 24px; }
    .contact-side a { color: #fff; }
    .contact-side p { color: rgba(255,255,255,.8); }

    .site-footer { background: #082624; color: rgba(255,255,255,.82); padding: 56px 0 24px; }
    .foot-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1.1fr; gap: 28px; margin-bottom: 32px; }
    .site-footer h3 { color: #fff; font-size: 18px; }
    .site-footer a { color: rgba(255,255,255,.82); }
    .site-footer a:hover { color: #fff; }
    .copyline { border-top: 1px solid rgba(217,227,223,.16); padding-top: 16px; font-size: 13px; }

    @media (max-width: 1280px) {
      .container { width: min(100% - 48px, var(--container)); }
    }
    @media (max-width: 1024px) {
      .nav-links { display: none; }
      .menu-toggle { display: inline-flex; }
      .nav-mask {
        display: block; position: fixed; inset: 0; background: rgba(12,51,49,.45);
        opacity: 0; pointer-events: none; transition: opacity .2s; z-index: 90;
      }
      .nav-drawer {
        display: block; position: fixed; top: 0; right: 0; height: 100%; width: min(80%, 360px);
        background: var(--surface); z-index: 100; transform: translateX(100%);
        transition: transform .25s var(--ease); padding: 24px 20px; overflow: auto;
      }
      body.nav-open .nav-mask { opacity: 1; pointer-events: auto; }
      body.nav-open .nav-drawer { transform: none; }
      .nav-drawer a { display: block; padding: 12px 8px; min-height: 44px; color: var(--ink); font-weight: 600; }
      .intro-grid, .demo-tabs, .product-spotlight, .path-grid, .cases-grid, .cta-wrap, .scene-board { grid-template-columns: 1fr; }
      .path-panel { grid-template-columns: 1fr; }
      .bento-6 { grid-template-columns: 1fr 1fr; }
      .bento-card.span-2 { grid-column: span 2; }
      .story-grid, .news-grid, .price-tiers { grid-template-columns: 1fr 1fr; }
      .review-masonry { columns: 2; }
      .scene-card.shift { margin-top: 0; }
      .tier.featured { transform: none; }
    }
    @media (max-width: 768px) {
      :root { --space: 56px; --gutter: 20px; }
      .topbar { font-size: 12px; }
      .hero-track, .hero-carousel { min-height: 100svh; height: auto; }
      .hero-track { min-height: 100svh; }
      .slide { min-height: 100svh; }
      .bento-6, .stat-bar, .story-grid, .news-grid, .price-tiers, .quote-row, .spec-list, .steps, .foot-grid { grid-template-columns: 1fr 1fr; }
      .product-side img { height: 180px; }
      .demo-stage img { height: 280px; }
      .hero-arrow { display: none; }
    }
    @media (max-width: 520px) {
      .container { width: min(100% - 32px, var(--container)); }
      .bento-6, .stat-bar, .story-grid, .news-grid, .price-tiers, .quote-row, .spec-list, .steps, .foot-grid { grid-template-columns: 1fr; }
      .bento-card.span-2, .bento-card.alt { grid-column: auto; flex-direction: column; }
      .review-masonry { columns: 1; }
      .review { transform: none !important; }
      .topbar-right .hide-sm { display: none; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      .hero-track, .bento-card, .btn, .nav-drawer { transition: none; }
    }