/* roulang page: index */
:root {
      --c-teal: #0e8f7b;
      --c-teal-deep: #0a6b5d;
      --c-teal-darker: #084f45;
      --c-teal-soft: #d8f1eb;
      --c-teal-mist: #eef7f4;
      --c-copper: #c17a32;
      --c-copper-deep: #8d541c;
      --c-amber: #d9a85a;
      --c-graphite: #1a201e;
      --c-graphite-2: #262d2b;
      --c-ink: #151a18;
      --c-lab: #eef2f0;
      --c-paper: #f6f8f7;
      --c-card: #fcfdfd;
      --c-line: #cfd6d3;
      --c-line-strong: #9aa8a3;
      --c-text: #1c2321;
      --c-muted: #5b6561;
      --c-faint: #87918d;
      --c-danger: #b24732;
      --c-danger-bg: #f8e8e3;
      --c-ok-bg: #d9f0ea;
      --c-dark: #101917;
      --c-dark-2: #0c1412;
      --c-on-dark: #e6eeea;
      --c-on-dark-muted: #9db0aa;
      --radius: 8px;
      --radius-sm: 4px;
      --radius-lg: 10px;
      --shadow: 0 10px 28px rgba(20, 32, 28, .06);
      --shadow-hover: 0 14px 32px rgba(14, 143, 123, .12);
      --container: 1200px;
      --nav-top: 36px;
      --nav-main: 68px;
      --space: 112px;
      --space-m: 64px;
      --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      --mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", "Noto Sans SC", monospace;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: var(--font);
      color: var(--c-text);
      background: var(--c-lab);
      line-height: 1.75;
      font-size: 16px;
      letter-spacing: .01em;
    }
    body.menu-open { overflow: hidden; }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--c-teal-deep); text-decoration: none; transition: color .2s ease, border-color .2s ease, background .2s ease; }
    a:hover { color: var(--c-teal); }
    button, input, select, textarea { font-family: inherit; font-size: 16px; }
    button { cursor: pointer; }
    h1, h2, h3, h4 { margin: 0; letter-spacing: -.02em; line-height: 1.28; color: var(--c-ink); font-weight: 700; }
    p { margin: 0 0 1em; }
    p:last-child { margin-bottom: 0; }
    ul { margin: 0; padding: 0; list-style: none; }
    :focus-visible { outline: 2px solid var(--c-teal); outline-offset: 3px; }
    .skip-link {
      position: absolute; left: 12px; top: -48px; z-index: 2000;
      background: var(--c-teal); color: #fff; padding: 10px 16px; border-radius: var(--radius-sm);
    }
    .skip-link:focus { top: 10px; color: #fff; }
    .container { width: min(100% - 40px, var(--container)); margin: 0 auto; }
    .num { font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; letter-spacing: 0; }
    .badge {
      display: inline-flex; align-items: center; gap: 6px;
      min-height: 28px; padding: 0 10px; border-radius: 999px;
      border: 1px solid var(--c-line); background: #fff; color: var(--c-muted);
      font-size: 12px; font-weight: 600; letter-spacing: .04em;
    }
    .badge--teal { background: var(--c-teal-soft); border-color: transparent; color: var(--c-teal-deep); }
    .badge--copper { background: #f7ecd9; border-color: transparent; color: var(--c-copper-deep); }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 0 20px; border-radius: var(--radius);
      border: 2px solid transparent; font-weight: 600; letter-spacing: .02em;
      transition: background .2s ease, border-color .2s ease, transform .2s ease, color .2s ease;
    }
    .btn--primary { background: var(--c-teal); color: #fff; }
    .btn--primary:hover, .btn--primary:active { background: var(--c-teal-deep); color: #fff; border-color: var(--c-copper); transform: translateY(-1px); }
    .btn--ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.45); }
    .btn--ghost:hover { border-color: var(--c-amber); color: #fff; background: rgba(255,255,255,.06); }
    .btn--line { background: transparent; color: var(--c-teal-deep); border-color: var(--c-teal); }
    .btn--line:hover { background: var(--c-teal-mist); border-color: var(--c-copper); color: var(--c-teal-darker); }
    .btn--block { width: 100%; }
    .site-header { position: relative; z-index: 100; }
    .nav-top {
      height: var(--nav-top); background: #e4eae7; color: var(--c-muted);
      font-size: 12px; border-bottom: 1px solid #d4ddd8;
    }
    .nav-top .container {
      height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px;
    }
    .nav-top-meta { display: flex; align-items: center; gap: 16px; min-width: 0; }
    .nav-top-meta span, .nav-top-meta a { white-space: nowrap; color: var(--c-muted); }
    .nav-top-meta a:hover { color: var(--c-teal-deep); }
    .nav-top-meta .split { width: 1px; height: 12px; background: #c3cdc8; display: inline-block; }
    .nav-top-cta {
      color: var(--c-teal-deep); font-weight: 600; min-height: 28px; display: inline-flex; align-items: center;
      border-bottom: 1px solid transparent;
    }
    .nav-top-cta:hover { color: var(--c-teal); border-bottom-color: var(--c-teal); }
    .nav-main {
      position: sticky; top: 0; z-index: 110;
      height: var(--nav-main); background: rgba(252,253,253,.94);
      backdrop-filter: blur(12px); border-bottom: 1px solid var(--c-line);
    }
    .nav-main .container {
      height: 100%; display: flex; align-items: center; gap: 24px;
    }
    .logo {
      display: flex; align-items: center; gap: 10px; color: var(--c-ink); flex-shrink: 0;
    }
    .logo:hover { color: var(--c-ink); }
    .logo-mark {
      width: 36px; height: 36px; border-radius: 6px;
      background: var(--c-graphite); display: grid; place-items: center;
      box-shadow: inset 0 0 0 1px #3a4441;
    }
    .logo-text { display: flex; flex-direction: column; line-height: 1.15; }
    .logo-text strong { font-size: 16px; font-weight: 700; }
    .logo-text small { font-size: 11px; color: var(--c-muted); font-weight: 400; letter-spacing: .12em; }
    .nav-links { display: flex; align-items: center; gap: 4px; margin-left: auto; }
    .nav-links a {
      position: relative; color: var(--c-text); font-size: 14px; font-weight: 600;
      padding: 8px 12px; min-height: 44px; display: inline-flex; align-items: center;
    }
    .nav-links a::after {
      content: ""; position: absolute; left: 12px; right: 12px; bottom: 6px; height: 2px;
      background: var(--c-teal); transform: scaleX(0); transform-origin: left; transition: transform .2s ease;
    }
    .nav-links a:hover, .nav-links a.is-active { color: var(--c-teal-deep); }
    .nav-links a:hover::after, .nav-links a.is-active::after { transform: scaleX(1); }
    .nav-cta { margin-left: 8px; flex-shrink: 0; }
    .menu-toggle {
      display: none; width: 44px; height: 44px; border: 1px solid var(--c-line);
      background: #fff; border-radius: var(--radius-sm); margin-left: auto;
      align-items: center; justify-content: center; flex-direction: column; gap: 5px;
    }
    .menu-toggle span { width: 18px; height: 2px; background: var(--c-graphite); display: block; }
    .nav-drawer {
      display: none; position: fixed; inset: var(--nav-main) 0 0 0; z-index: 120;
      background: rgba(16, 25, 23, .46);
    }
    .nav-drawer.is-open { display: block; }
    .nav-drawer-panel {
      margin-left: auto; width: min(86vw, 360px); height: 100%;
      background: #fbfcfc; padding: 20px; overflow: auto;
      box-shadow: -12px 0 32px rgba(0,0,0,.12);
    }
    .nav-drawer-panel a {
      display: flex; align-items: center; min-height: 48px; padding: 0 12px;
      border-bottom: 1px solid var(--c-line); color: var(--c-text); font-weight: 600;
    }
    .nav-drawer-panel a:hover { color: var(--c-teal-deep); background: var(--c-teal-mist); }
    main { overflow: clip; }
    section[id] { scroll-margin-top: 84px; }
    .hero {
      position: relative; min-height: 720px; color: #fff;
      display: flex; align-items: stretch; isolation: isolate;
    }
    .hero-slides { position: absolute; inset: 0; z-index: 0; }
    .hero-slide {
      position: absolute; inset: 0; opacity: 0; transition: opacity .7s ease;
    }
    .hero-slide.is-active { opacity: 1; }
    .hero-slide img { width: 100%; height: 100%; object-fit: cover; }
    .hero-mask {
      position: absolute; inset: 0;
      background:
        linear-gradient(90deg, rgba(12,20,18,.86) 0%, rgba(12,20,18,.62) 46%, rgba(12,20,18,.38) 100%),
        linear-gradient(180deg, rgba(10,16,14,.2), rgba(10,16,14,.45));
    }
    .hero-grid {
      position: absolute; inset: 0; pointer-events: none;
      background-image:
        linear-gradient(rgba(61,220,176,.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(61,220,176,.07) 1px, transparent 1px);
      background-size: 48px 48px; mask-image: linear-gradient(90deg, #000 30%, transparent 80%);
    }
    .hero-scale {
      position: absolute; left: 0; right: 0; bottom: 84px; height: 18px; pointer-events: none;
      background-image: repeating-linear-gradient(90deg, rgba(217,168,90,.35) 0 1px, transparent 1px 12px);
      opacity: .5;
    }
    .hero .container {
      position: relative; z-index: 2; padding: 72px 0 88px;
      display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(320px, .9fr); gap: 36px; align-items: center;
    }
    .hero-kicker { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; color: var(--c-amber); font-size: 13px; font-weight: 600; letter-spacing: .16em; }
    .hero h1 { color: #fff; font-size: clamp(30px, 4vw, 46px); max-width: 16em; margin-bottom: 18px; }
    .hero-lead { color: #d5e4df; font-size: 16px; max-width: 38em; margin-bottom: 28px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .quiz {
      background: rgba(252,253,253,.96); color: var(--c-text);
      border: 1px solid rgba(193,122,50,.35); border-radius: var(--radius-lg);
      box-shadow: var(--shadow); overflow: hidden;
    }
    .quiz-head {
      display: flex; justify-content: space-between; align-items: center; gap: 12px;
      padding: 14px 16px; background: var(--c-graphite); color: #fff;
    }
    .quiz-head strong { font-size: 14px; }
    .quiz-head span { font-size: 12px; color: var(--c-amber); letter-spacing: .08em; }
    .quiz-body { padding: 16px; display: grid; gap: 12px; }
    .field { display: grid; gap: 6px; }
    .field label { font-size: 13px; font-weight: 600; color: var(--c-muted); }
    .field select, .field input, .field textarea {
      width: 100%; min-height: 44px; border: 1px solid var(--c-line); border-radius: var(--radius-sm);
      background: #fff; padding: 8px 12px; color: var(--c-text);
      transition: border-color .2s ease, box-shadow .2s ease;
    }
    .field textarea { min-height: 96px; resize: vertical; line-height: 1.6; }
    .field select:focus, .field input:focus, .field textarea:focus {
      border-color: var(--c-teal); box-shadow: 0 0 0 3px rgba(14,143,123,.15); outline: none;
    }
    .field.is-error select, .field.is-error input, .field.is-error textarea {
      border-color: var(--c-danger); background: #fff8f6;
    }
    .field .err { color: var(--c-danger); font-size: 12px; display: none; }
    .field.is-error .err { display: block; }
    .quiz-preview {
      border: 1px dashed var(--c-line); border-radius: var(--radius); padding: 12px;
      background: var(--c-teal-mist);
    }
    .quiz-preview h3 { font-size: 13px; margin-bottom: 8px; color: var(--c-teal-darker); }
    .quiz-preview dl { display: grid; grid-template-columns: 72px 1fr; gap: 6px 10px; font-size: 13px; margin: 0; }
    .quiz-preview dt { color: var(--c-muted); }
    .quiz-preview dd { margin: 0; font-weight: 600; }
    .hero-controls {
      position: absolute; z-index: 3; left: 0; right: 0; bottom: 24px;
      display: flex; justify-content: center; align-items: center; gap: 12px;
    }
    .hero-arrow, .dot {
      width: 44px; height: 44px; border-radius: 50%; border: 1px solid rgba(255,255,255,.35);
      background: rgba(16,25,23,.35); color: #fff; display: grid; place-items: center;
    }
    .hero-arrow:hover { border-color: var(--c-amber); background: rgba(16,25,23,.55); }
    .dots { display: flex; gap: 8px; }
    .dot { width: 10px; height: 10px; padding: 0; min-width: 10px; }
    .dot.is-active { background: var(--c-teal); border-color: var(--c-teal); }
    .strip {
      background: #fff; border-bottom: 1px solid var(--c-line); padding: 18px 0;
    }
    .strip-track {
      display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px;
    }
    .strip a {
      min-height: 64px; padding: 10px 12px; border: 1px solid var(--c-line); border-radius: var(--radius);
      background: var(--c-paper); display: flex; flex-direction: column; justify-content: center;
      color: var(--c-text);
    }
    .strip a:hover { border-color: var(--c-teal); color: var(--c-teal-deep); transform: translateY(-2px); box-shadow: var(--shadow); }
    .strip small { color: var(--c-faint); font-size: 12px; }
    .strip strong { font-size: 14px; }
    .sec { padding: var(--space) 0; position: relative; }
    .sec--paper { background: var(--c-paper); }
    .sec--white { background: #fff; }
    .sec--mist { background: var(--c-teal-mist); }
    .sec--dark {
      background:
        linear-gradient(180deg, rgba(12,20,18,.88), rgba(10,18,16,.92)),
        url("/assets/images/b0983d04e0e377ad.webp") center/cover;
      color: var(--c-on-dark);
    }
    .sec--dark h2, .sec--dark h3 { color: #fff; }
    .sec-head { max-width: 760px; margin-bottom: 40px; }
    .sec-head h2 { font-size: clamp(24px, 3vw, 34px); margin: 10px 0 14px; }
    .sec-head p { color: var(--c-muted); }
    .sec--dark .sec-head p { color: var(--c-on-dark-muted); }
    .kicker { font-size: 12px; font-weight: 700; letter-spacing: .18em; color: var(--c-copper); text-transform: none; }
    .intro-grid {
      display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center;
    }
    .intro-copy p { color: var(--c-muted); margin-bottom: 16px; }
    .spec-list { display: grid; gap: 10px; margin-top: 20px; }
    .spec-list li {
      display: grid; grid-template-columns: 92px 1fr; gap: 12px; padding: 12px 14px;
      border: 1px solid var(--c-line); background: #fff; border-radius: var(--radius);
      font-size: 14px;
    }
    .spec-list b { color: var(--c-teal-deep); font-variant-numeric: tabular-nums; }
    .frame {
      position: relative; border-radius: var(--radius-lg); overflow: hidden;
      border: 1px solid var(--c-line); box-shadow: var(--shadow);
    }
    .frame img { width: 100%; height: 460px; object-fit: cover; }
    .frame figcaption {
      position: absolute; left: 12px; right: 12px; bottom: 12px;
      background: rgba(16,25,23,.78); color: #fff; font-size: 13px; padding: 10px 12px; border-radius: var(--radius-sm);
    }
    .bento {
      display: grid; grid-template-columns: 1.4fr 1fr 1fr; grid-template-rows: auto auto; gap: 18px;
    }
    .work-card {
      background: var(--c-card); border: 1px solid var(--c-graphite-2); border-radius: var(--radius);
      overflow: hidden; display: flex; flex-direction: column; min-height: 100%;
      transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
    }
    .work-card:hover { transform: translateY(-4px); border-color: var(--c-teal); box-shadow: var(--shadow-hover); }
    .work-card img { width: 100%; height: 150px; object-fit: cover; }
    .work-card.large { grid-row: 1 / span 2; }
    .work-card.large img { height: 280px; }
    .work-body { padding: 16px 16px 18px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
    .work-body h3 { font-size: 18px; }
    .work-body p { color: var(--c-muted); font-size: 14px; }
    .meta-row { display: flex; flex-wrap: wrap; gap: 6px; }
    .work-body .btn { margin-top: auto; align-self: flex-start; min-height: 40px; }
    .grid-6 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .adv-card {
      background: #fff; border: 1px solid #d7ddda; border-radius: var(--radius); padding: 22px 20px;
      transition: transform .2s ease, border-color .2s ease;
    }
    .adv-card:hover { transform: translateY(-4px); border-color: var(--c-teal); }
    .icon-line {
      width: 40px; height: 40px; border: 1px solid var(--c-line-strong); border-radius: 6px;
      display: grid; place-items: center; margin-bottom: 14px; color: var(--c-teal-deep);
    }
    .adv-card h3 { font-size: 17px; margin-bottom: 8px; }
    .adv-card p { color: var(--c-muted); font-size: 14px; }
    .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
    .price-card {
      background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); overflow: hidden;
      display: flex; flex-direction: column; box-shadow: var(--shadow);
    }
    .price-card img { height: 190px; width: 100%; object-fit: cover; }
    .price-card .body { padding: 18px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
    .price-card h3 { font-size: 20px; }
    .price-card p { color: var(--c-muted); font-size: 14px; }
    .price { font-size: 22px; color: var(--c-copper-deep); font-weight: 700; font-variant-numeric: tabular-nums; }
    .price small { font-size: 13px; color: var(--c-muted); font-weight: 400; }
    .timeline {
      display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; position: relative;
    }
    .timeline::before {
      content: ""; position: absolute; left: 8%; right: 8%; top: 23px; height: 2px; background: var(--c-line);
    }
    .step { padding: 0 12px; position: relative; }
    .step i {
      width: 18px; height: 18px; border-radius: 50%; background: var(--c-teal); display: block; margin-bottom: 16px;
      box-shadow: 0 0 0 6px #fff, 0 0 0 7px var(--c-teal-soft);
    }
    .step h3 { font-size: 16px; margin-bottom: 8px; }
    .step p { font-size: 14px; color: var(--c-muted); }
    .demo-stage {
      display: grid; grid-template-columns: 1.2fr .8fr; gap: 28px; align-items: center;
    }
    .device {
      background: var(--c-graphite); border-radius: 12px; padding: 14px; border: 1px solid #3b4743;
    }
    .device-bar { display: flex; gap: 6px; margin-bottom: 10px; }
    .device-bar b { width: 8px; height: 8px; border-radius: 50%; background: var(--c-copper); display: block; }
    .device-bar b:nth-child(2) { background: var(--c-amber); }
    .device-bar b:nth-child(3) { background: var(--c-teal); }
    .device-screen { position: relative; overflow: hidden; border-radius: 6px; min-height: 340px; background: #0b1210; }
    .device-screen .d-slide { position: absolute; inset: 0; opacity: 0; transition: opacity .45s ease; }
    .device-screen .d-slide.is-active { opacity: 1; }
    .device-screen img { width: 100%; height: 340px; object-fit: cover; }
    .demo-copy p { color: var(--c-muted); margin: 12px 0 18px; }
    .demo-dots { display: flex; gap: 8px; margin-top: 12px; }
    .case-wall { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 16px; }
    .case-card {
      position: relative; min-height: 260px; border-radius: var(--radius); overflow: hidden;
      border: 1px solid rgba(255,255,255,.08);
    }
    .case-card.wide { min-height: 540px; grid-row: span 2; }
    .case-card img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
    .case-card .cap {
      position: absolute; inset: auto 0 0 0; padding: 18px;
      background: linear-gradient(180deg, transparent, rgba(8,14,12,.92));
    }
    .case-card h3 { color: #fff; font-size: 18px; margin: 8px 0; }
    .case-card p { color: #c5d4cf; font-size: 13px; }
    .stories { display: grid; grid-template-columns: 1.3fr 1fr; gap: 18px; }
    .story {
      background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); overflow: hidden;
    }
    .story img { width: 100%; height: 220px; object-fit: cover; }
    .story .body { padding: 20px; }
    .story h3 { font-size: 18px; margin: 8px 0 10px; }
    .story p { color: var(--c-muted); font-size: 14px; }
    .story-stack { display: grid; gap: 18px; }
    .stats {
      background: var(--c-graphite); color: #fff; padding: 36px 0;
    }
    .stats-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
    .stat { text-align: center; padding: 12px 8px; border-left: 1px solid rgba(255,255,255,.08); }
    .stat:first-child { border-left: 0; }
    .stat b { display: block; font-size: 32px; color: var(--c-amber); font-variant-numeric: tabular-nums; line-height: 1.1; }
    .stat span { font-size: 13px; color: #b7c4bf; }
    .reviews { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
    .quote {
      background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 20px;
    }
    .quote p { font-size: 14px; color: var(--c-text); }
    .quote footer { margin-top: 16px; font-size: 13px; color: var(--c-muted); }
    .quote footer strong { display: block; color: var(--c-ink); }
    .scene-layout { display: grid; grid-template-columns: 240px 1fr; gap: 24px; }
    .scene-index { display: grid; gap: 8px; align-content: start; }
    .scene-index button {
      min-height: 48px; text-align: left; padding: 10px 14px; border-radius: var(--radius-sm);
      border: 1px solid var(--c-line); background: #fff; color: var(--c-text); font-weight: 600;
    }
    .scene-index button.is-active, .scene-index button:hover {
      background: var(--c-teal); color: #fff; border-color: var(--c-teal);
    }
    .scene-panel {
      display: none; background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
      overflow: hidden; min-height: 320px;
    }
    .scene-panel.is-active { display: grid; grid-template-columns: 1.1fr .9fr; }
    .scene-panel .copy { padding: 28px; }
    .scene-panel h3 { margin-bottom: 10px; }
    .scene-panel p { color: var(--c-muted); }
    .scene-panel img { width: 100%; height: 100%; object-fit: cover; min-height: 280px; }
    .news-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 18px; }
    .news-feature, .news-item {
      background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); overflow: hidden;
    }
    .news-feature img { width: 100%; height: 240px; object-fit: cover; }
    .news-feature .body, .news-item { padding: 18px; }
    .news-item { display: grid; grid-template-columns: 120px 1fr; gap: 14px; align-items: center; padding: 12px; }
    .news-item img { width: 120px; height: 86px; object-fit: cover; border-radius: var(--radius-sm); }
    .news-list { display: grid; gap: 12px; }
    .news-feature h3, .news-item h3 { font-size: 18px; margin: 8px 0; }
    .news-item h3 { font-size: 16px; }
    .news-feature p, .news-item p { color: var(--c-muted); font-size: 14px; }
    .more-link { display: inline-flex; min-height: 44px; align-items: center; font-weight: 600; color: var(--c-teal-deep); }
    .partners { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
    .partner {
      min-height: 88px; border: 1px solid var(--c-line); border-radius: var(--radius);
      background: #f3f5f4; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
      filter: grayscale(1); opacity: .8; transition: .2s ease; color: var(--c-text); text-align: center; padding: 12px;
    }
    .partner:hover { filter: none; opacity: 1; border-color: var(--c-teal); background: #fff; }
    .partner .mark {
      width: 36px; height: 22px; border-radius: 3px; background: var(--c-teal); opacity: .7;
    }
    .partner:nth-child(2) .mark { background: var(--c-copper); }
    .partner:nth-child(3) .mark { background: #2f6f8f; }
    .partner:nth-child(4) .mark { background: #4d7c4a; }
    .partner strong { font-size: 14px; }
    .partner span { font-size: 12px; color: var(--c-muted); }
    .faq-list { display: grid; gap: 10px; }
    .faq-item { border: 1px solid var(--c-line); background: #fff; border-radius: var(--radius); overflow: hidden; }
    .faq-item.is-open { border-color: var(--c-teal); }
    .faq-item.is-open .faq-q { box-shadow: inset 4px 0 0 var(--c-teal); }
    .faq-q {
      width: 100%; min-height: 56px; text-align: left; background: #fff; border: 0; padding: 14px 48px 14px 18px;
      font-weight: 700; color: var(--c-ink); position: relative;
    }
    .faq-q::after {
      content: "+"; position: absolute; right: 18px; top: 50%; transform: translateY(-50%);
      color: var(--c-teal); font-size: 22px;
    }
    .faq-item.is-open .faq-q::after { content: "–"; }
    .faq-a { display: none; padding: 0 18px 16px 18px; color: var(--c-muted); background: var(--c-teal-mist); }
    .faq-item.is-open .faq-a { display: block; }
    .assure { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
    .assure li {
      background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 18px;
      display: grid; grid-template-columns: 36px 1fr; gap: 12px; align-items: start;
    }
    .assure h3 { font-size: 16px; margin-bottom: 6px; }
    .assure p { font-size: 13px; color: var(--c-muted); }
    .contact-wrap {
      display: grid; grid-template-columns: 1.15fr .85fr; gap: 28px;
      background: var(--c-dark); color: var(--c-on-dark); border-radius: 12px; padding: 36px;
      border: 1px solid #243330;
    }
    .contact-wrap h2 { color: #fff; font-size: 30px; margin: 8px 0 12px; }
    .contact-wrap .lead { color: var(--c-on-dark-muted); margin-bottom: 20px; }
    .side-info { display: grid; gap: 12px; }
    .side-info div { border: 1px solid #2c3c38; border-radius: var(--radius); padding: 14px 16px; background: rgba(255,255,255,.03); }
    .side-info span { display: block; color: var(--c-amber); font-size: 12px; letter-spacing: .1em; margin-bottom: 4px; }
    .form-card { background: #fff; color: var(--c-text); border-radius: var(--radius); padding: 20px; }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .form-grid .full { grid-column: 1 / -1; }
    .form-ok {
      display: none; background: var(--c-ok-bg); color: var(--c-teal-darker);
      border-radius: var(--radius); padding: 14px; font-weight: 600; margin-bottom: 12px;
    }
    .form-ok.is-show { display: block; }
    .site-footer {
      background: #0d1412; color: #b7c4bf; padding: 56px 0 24px; border-top: 1px solid #1c2a26;
    }
    .footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1.2fr; gap: 28px; margin-bottom: 36px; }
    .site-footer h3 { color: #fff; font-size: 15px; margin-bottom: 14px; }
    .site-footer a { color: #b7c4bf; display: inline-flex; min-height: 32px; align-items: center; }
    .site-footer a:hover { color: #fff; }
    .foot-brand { color: #fff; font-size: 18px; font-weight: 700; margin-bottom: 10px; display: flex; gap: 8px; align-items: center; }
    .copybar {
      border-top: 1px solid #1c2a26; padding-top: 16px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
      font-size: 13px;
    }
    @media (max-width: 1200px) {
      .container { width: min(100% - 32px, 1120px); }
      .grid-6, .reviews, .stats-grid, .case-wall { gap: 12px; }
      .frame img { height: 400px; }
    }
    @media (max-width: 992px) {
      :root { --space: 84px; --nav-main: 64px; }
      .nav-links, .nav-cta { display: none; }
      .menu-toggle { display: inline-flex; }
      .hero { min-height: 0; }
      .hero .container { grid-template-columns: 1fr; padding: 48px 0 96px; }
      .intro-grid, .demo-stage, .stories, .scene-layout, .news-grid, .contact-wrap, .footer-grid { grid-template-columns: 1fr; }
      .bento { grid-template-columns: 1fr 1fr; }
      .work-card.large { grid-row: auto; }
      .grid-6, .reviews { grid-template-columns: 1fr 1fr; }
      .stats-grid, .assure, .partners { grid-template-columns: 1fr 1fr 1fr; }
      .case-wall { grid-template-columns: 1fr 1fr; }
      .case-card.wide { grid-row: auto; min-height: 280px; }
      .scene-panel.is-active { grid-template-columns: 1fr; }
      .timeline { grid-template-columns: 1fr; gap: 18px; }
      .timeline::before { left: 20px; right: auto; top: 8px; bottom: 8px; width: 2px; height: auto; }
      .step { padding-left: 44px; }
      .form-grid { grid-template-columns: 1fr; }
    }
    @media (max-width: 768px) {
      :root { --space: 64px; }
      .nav-top-meta span:nth-child(n+3), .nav-top .split { display: none; }
      .strip-track, .grid-3, .grid-6, .reviews, .partners, .assure, .stats-grid, .case-wall, .bento {
        grid-template-columns: 1fr;
      }
      .stats-grid { grid-template-columns: 1fr 1fr; }
      .stat { border-left: 0; border-top: 1px solid rgba(255,255,255,.08); }
      .news-item { grid-template-columns: 1fr; }
      .news-item img { width: 100%; height: 160px; }
      .hero h1 { font-size: 28px; }
      .contact-wrap { padding: 22px 16px; }
      .frame img, .device-screen img, .story img { height: 220px; }
      .copybar { flex-direction: column; }
    }
    @media (max-width: 520px) {
      .container { width: min(100% - 24px, 520px); }
      .hero-actions { flex-direction: column; }
      .hero-actions .btn { width: 100%; }
      .strip-track { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 375px) {
      body { overflow-x: hidden; }
      .logo-text small { display: none; }
      .sec { padding: 56px 0; }
      .stats-grid { grid-template-columns: 1fr; }
    }

/* roulang page: index */
:root{
  --c-primary:#B8611C;
  --c-primary-2:#C86E28;
  --c-secondary:#1F7A6E;
  --c-secondary-2:#246F64;
  --c-accent:#D6B23A;
  --bg:#F3F5F2;
  --surface:#FFFDF8;
  --bg-alt:#E8ECE9;
  --ink:#1A1D21;
  --text:#1F2422;
  --muted:#5C6661;
  --line:#D5DBD6;
  --line-dark:#2A2F34;
  --paper:#F7F4EC;
  --radius:6px;
  --radius-sm:4px;
  --shadow:0 8px 24px rgba(26,29,33,.06);
  --shadow-hover:0 10px 26px rgba(26,29,33,.08);
  --space:28px;
  --w:1240px;
  --topbar-h:40px;
  --nav-h:70px;
  --font:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --mono:"Cascadia Mono","Sarasa Mono SC","Consolas","Microsoft YaHei",monospace;
}
*,*:before,*:after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:86px}
body{margin:0;font-family:var(--font);color:var(--text);background:var(--bg);font-size:17px;line-height:1.8;letter-spacing:.01em;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color .2s,border-color .2s,background .2s,transform .2s}
a:hover{color:var(--c-primary-2)}
button,input,select,textarea{font-family:inherit;font-size:16px}
button{cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3{line-height:1.28;font-weight:700;color:var(--ink);letter-spacing:.02em}
.container{width:min(var(--w),calc(100% - 40px));margin:0 auto}
.skip{position:absolute;left:-999px;top:0}
.skip:focus{left:12px;top:12px;background:#fff;padding:8px 12px;z-index:99}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";font-family:var(--mono)}
.badge{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 10px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);color:var(--muted);font-size:12px;letter-spacing:.04em}
.badge.accent{border-color:rgba(214,178,58,.55);color:#7A6414;background:#FBF6E3}
.badge.ink{background:rgba(255,253,248,.08);border-color:rgba(184,97,28,.55);color:#F4EFE4}
.kicker{display:inline-flex;align-items:center;gap:8px;color:var(--c-primary);font-size:13px;font-weight:700;letter-spacing:.12em;margin-bottom:14px}
.kicker:before{content:"";width:18px;height:1px;background:var(--c-primary)}
.sec{padding:88px 0;position:relative}
.sec-alt{background:var(--bg-alt)}
.sec-paper{background:var(--surface)}
.sec-head{max-width:760px;margin-bottom:36px}
.sec-head h2{font-size:32px;margin-bottom:16px}
.sec-head p{color:var(--muted);font-size:16px;line-height:1.8}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border-radius:var(--radius);border:1px solid transparent;font-weight:700;letter-spacing:.04em;transition:transform .18s,background .18s,border-color .18s,box-shadow .18s,color .18s}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-2);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-primary:active,.btn-ghost:active,.btn-line:active{transform:translateY(1px)}
.btn-line{background:transparent;color:#F7F4EC;border-color:rgba(247,244,236,.45)}
.btn-line:hover{border-color:#fff;color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--c-secondary);border-color:var(--c-secondary)}
.btn-ghost:hover{background:rgba(31,122,110,.08);transform:translateY(-1px)}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--c-secondary);outline-offset:2px}
.site-header{position:sticky;top:0;z-index:50;background:rgba(243,245,242,.92);backdrop-filter:saturate(1.2)}
.topbar{height:var(--topbar-h);background:var(--ink);color:#D8DED9;font-size:13px}
.topbar .container{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar a{color:#EFE8DC}
.topbar a:hover{color:var(--c-accent)}
.top-meta{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.top-meta span,.top-meta a{white-space:nowrap}
.navrow{height:var(--nav-h);border-bottom:1px solid var(--line);background:var(--surface)}
.navrow .container{height:100%;display:flex;align-items:center;gap:22px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink);min-width:188px}
.logo:hover{color:var(--ink)}
.logo-mark{width:36px;height:36px;flex:none}
.logo-name{display:flex;flex-direction:column;line-height:1.15}
.logo-name b{font-size:16px}
.logo-name small{font-size:11px;color:var(--muted);letter-spacing:.16em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{position:relative;color:var(--text);padding:10px 10px;font-size:14px;font-weight:600;min-height:44px;display:inline-flex;align-items:center}
.nav-links a:hover{color:var(--c-primary)}
.nav-links a.is-active{color:var(--c-primary)}
.nav-links a.is-active:after,.nav-links a:hover:after{content:"";position:absolute;left:10px;right:10px;bottom:6px;height:2px;background:var(--c-primary)}
.nav-cta{margin-left:8px}
.burger{display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--surface);border-radius:var(--radius-sm);align-items:center;justify-content:center;flex-direction:column;gap:5px;margin-left:auto}
.burger span{display:block;width:18px;height:2px;background:var(--ink)}
.drawer{display:none}
.site-header.is-compact .topbar{display:none}
.hero{position:relative;min-height:calc(100vh - 110px);color:#F6F1E8;overflow:hidden;background:var(--ink)}
.slides{position:absolute;inset:0}
.slide{position:absolute;inset:0;opacity:0;transition:opacity .7s ease;background:#1A1D21 center/cover no-repeat}
.slide.is-on{opacity:1;z-index:1}
.slide:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(26,29,33,.88) 0%,rgba(26,29,33,.62) 42%,rgba(26,29,33,.18) 100%)}
.hero-grid{position:relative;z-index:2;min-height:calc(100vh - 110px);display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:center;padding:54px 0 72px}
.hero-copy h1{color:#FFFDF8;font-size:46px;margin:8px 0 18px;max-width:16em}
.hero-copy .lead{max-width:38em;color:#D8D3C8;font-size:16px;line-height:1.85;margin-bottom:24px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:22px}
.hero-note{display:flex;gap:18px;flex-wrap:wrap;color:#B9C0BA;font-size:13px}
.hero-note b{color:var(--c-accent);font-weight:700}
.quiz{background:rgba(255,253,248,.06);border:1px solid rgba(184,97,28,.45);border-radius:8px;padding:22px;box-shadow:var(--shadow)}
.quiz h3{color:#FFFDF8;font-size:18px;margin-bottom:6px}
.quiz p{color:#C9C4B8;font-size:13px;line-height:1.7;margin-bottom:14px}
.quiz label{display:block;color:#E7E1D4;font-size:12px;margin:10px 0 6px}
.quiz select{width:100%;height:48px;border-radius:6px;border:1px solid #3A4146;background:#23272C;color:#F4EFE4;padding:0 12px}
.quiz-result{margin-top:14px;padding:12px;background:rgba(26,29,33,.55);border:1px dashed rgba(214,178,58,.45);border-radius:6px;color:#EFE8DC;font-size:13px;min-height:74px}
.quiz .btn{width:100%;margin-top:12px}
.hero-dots{position:absolute;right:28px;top:50%;transform:translateY(-50%);z-index:3;display:flex;flex-direction:column;gap:10px}
.hero-dots button,.hero-ctrl button{width:44px;height:44px;border-radius:50%;border:1px solid rgba(247,244,236,.28);background:rgba(26,29,33,.35);color:#F6F1E8}
.hero-dots button.is-on{background:var(--c-primary);border-color:var(--c-primary)}
.hero-ctrl{position:absolute;right:28px;bottom:28px;z-index:3}
.trust{padding:22px 0;background:var(--surface);border-bottom:1px solid var(--line)}
.trust-row{display:flex;gap:10px;overflow:auto;padding-bottom:4px;scrollbar-width:thin}
.trust-row .chip{flex:none;display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 14px;border:1px solid var(--line);background:var(--paper);border-radius:var(--radius-sm);font-size:13px;color:var(--text)}
.trust-row .chip i{width:7px;height:7px;border-radius:1px;background:var(--c-secondary);display:block}
.cap-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:center}
.cap-photo{position:relative}
.cap-photo img{width:100%;height:460px;object-fit:cover;border-radius:8px;border:1px solid var(--line);box-shadow:var(--shadow)}
.cap-photo .stamp{position:absolute;left:14px;top:14px}
.cap-facts{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px}
.fact{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px 14px 12px}
.fact b{display:block;font-size:18px;color:var(--c-primary);font-family:var(--mono)}
.fact span{font-size:13px;color:var(--muted)}
.bento{display:grid;grid-template-columns:1.2fr 1fr 1fr;grid-template-rows:auto auto;gap:16px}
.bento a.card{display:block;background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:22px;min-height:160px;color:inherit;box-shadow:var(--shadow);transition:transform .18s,border-color .18s,box-shadow .18s}
.bento a.card:hover{transform:translateY(-2px);border-color:var(--c-primary);box-shadow:var(--shadow-hover);color:inherit}
.bento .big{grid-row:1 / span 2;min-height:360px;background:var(--ink);color:#F6F1E8;border-color:var(--line-dark);background-image:linear-gradient(180deg,rgba(26,29,33,.28),rgba(26,29,33,.72)),url("/assets/images/09aa2f15836b6ed6.webp");background-size:cover;background-position:center}
.bento .code{font-size:11px;letter-spacing:.14em;color:var(--c-accent);margin-bottom:10px;font-family:var(--mono)}
.bento h3{font-size:22px;margin-bottom:8px;color:inherit}
.bento p{color:inherit;opacity:.86;font-size:14px;line-height:1.75}
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.adv{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:22px 20px;min-height:210px;box-shadow:var(--shadow);transition:transform .18s,border-color .18s}
.adv:hover{transform:translateY(-2px);border-color:var(--c-primary)}
.adv .code{font-size:11px;color:var(--muted);font-family:var(--mono);letter-spacing:.12em}
.adv h3{font-size:20px;margin:10px 0 12px}
.adv li{position:relative;padding-left:14px;color:var(--muted);font-size:14px;line-height:1.75;margin-bottom:6px}
.adv li:before{content:"";position:absolute;left:0;top:.7em;width:6px;height:1px;background:var(--c-secondary)}
.prod-grid{display:grid;grid-template-columns:1fr 1.18fr 1fr;gap:16px;align-items:stretch}
.prod{background:var(--surface);border:1px solid var(--line);border-radius:8px;overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.prod.feature{border-width:2px;border-color:var(--c-primary);transform:translateY(-8px)}
.prod img{width:100%;height:210px;object-fit:cover}
.prod .body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.prod h3{font-size:22px}
.prod .meta{font-size:13px;color:var(--muted);line-height:1.7}
.prod .spec{font-size:13px;color:var(--text);border-top:1px dashed var(--line);padding-top:10px}
.stats{background:linear-gradient(90deg,#1F2422 0%,#1A1D21 55%,#21423D 100%);color:#F4EFE4;padding:36px 0}
.stats-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.stat{padding:8px 6px;border-left:1px solid rgba(247,244,236,.12)}
.stat b{display:block;font-size:32px;line-height:1.1;color:#FFFDF8;font-family:var(--mono)}
.stat em{font-style:normal;color:var(--c-accent);font-size:14px;margin-left:4px}
.stat span{display:block;margin-top:6px;color:#B9C0BA;font-size:13px}
.timeline{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;position:relative}
.timeline:before{content:"";position:absolute;left:0;right:0;top:23px;height:1px;background:linear-gradient(90deg,transparent,var(--c-secondary),transparent)}
.step{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:18px 14px 16px;position:relative;min-height:210px}
.step .n{width:44px;height:44px;border-radius:50%;background:var(--c-secondary);color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-weight:700;margin-bottom:12px}
.step h3{font-size:16px;margin-bottom:8px}
.step p{font-size:13px;color:var(--muted);line-height:1.7}
.cases{background:var(--ink);color:#E8E2D6;overflow:hidden}
.cases:before{content:"";position:absolute;inset:0;background:url("/assets/images/b0983d04e0e377ad.webp") center/cover no-repeat;opacity:.18}
.cases .container{position:relative;z-index:1}
.case-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:28px}
.case-idea{border:1px solid rgba(184,97,28,.5);padding:28px 24px;background:rgba(26,29,33,.55)}
.case-idea h2{color:#FFFDF8;font-size:30px;margin:10px 0 16px}
.case-idea p{color:#C9C4B8;font-size:15px}
.case-wall{display:grid;grid-template-columns:1.3fr 1fr;grid-template-rows:repeat(3,minmax(110px,auto));gap:10px}
.case-item{border:1px solid rgba(247,244,236,.12);background:rgba(255,253,248,.04);padding:0;color:#F6F1E8;text-align:left;border-radius:4px;overflow:hidden;min-height:44px}
.case-item:hover{border-color:var(--c-primary)}
.case-item.is-lg{grid-row:span 2;min-height:240px;background-size:cover;background-position:center}
.case-item .pad{padding:16px;background:linear-gradient(180deg,transparent,rgba(26,29,33,.78));height:100%;display:flex;flex-direction:column;justify-content:flex-end}
.case-item h3{color:#FFFDF8;font-size:16px;margin-bottom:4px}
.case-item p{font-size:12px;color:#D0CBBF;display:none}
.case-item.is-open p,.case-item.is-lg p{display:block}
.scene-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:16px}
.scene{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:22px;min-height:240px;box-shadow:var(--shadow)}
.scene:first-child{background:var(--ink);color:#F6F1E8;border-color:var(--ink)}
.scene h3{font-size:20px;margin:10px 0 10px;color:inherit}
.scene p{color:inherit;opacity:.86;font-size:14px;line-height:1.75;margin-bottom:16px}
.quote-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.quote{background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--c-primary);border-radius:0 6px 6px 0;padding:18px 16px;min-height:230px}
.quote p{font-size:14px;color:var(--text);line-height:1.75;margin-bottom:16px}
.quote b{display:block;font-size:14px}
.quote span{font-size:12px;color:var(--muted)}
.logo-wall{display:grid;grid-template-columns:repeat(6,1fr);gap:10px}
.partner{height:86px;display:flex;align-items:center;justify-content:center;text-align:center;padding:8px;border:1px solid var(--line);background:var(--surface);color:#7A847E;filter:grayscale(1);font-size:13px;font-weight:700;letter-spacing:.08em}
.partner:hover{filter:none;border-color:var(--c-secondary);color:var(--c-secondary)}
.news-list{display:flex;flex-direction:column;gap:12px}
.news{display:grid;grid-template-columns:140px 160px 1fr;gap:16px;align-items:center;background:var(--surface);border:1px solid var(--line);padding:12px;border-radius:6px}
.news time{font-family:var(--mono);color:var(--c-secondary);font-size:13px}
.news img{width:160px;height:92px;object-fit:cover;border-radius:4px}
.news h3{font-size:18px;margin-bottom:6px}
.news p{font-size:14px;color:var(--muted);line-height:1.7}
.news-more{margin-top:16px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item button{width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;background:transparent;border:0;text-align:left;padding:14px 4px;font-weight:700;color:var(--ink)}
.faq-item .icon{width:28px;height:28px;border:1px solid var(--line);border-radius:4px;display:grid;place-items:center;color:var(--c-secondary);flex:none}
.faq-item .ans{display:none;padding:0 8px 16px;background:var(--bg-alt);color:var(--muted);font-size:15px;line-height:1.8}
.faq-item.is-open .ans{display:block}
.guard{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.guard-item{display:flex;gap:12px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);padding:16px;border-radius:6px}
.guard-ico{width:36px;height:36px;border:1px solid var(--c-secondary);color:var(--c-secondary);display:grid;place-items:center;border-radius:4px;flex:none;font-family:var(--mono);font-size:12px}
.guard h3{font-size:16px;margin-bottom:4px}
.guard p{font-size:13px;color:var(--muted);line-height:1.7}
.contact{background:#16332F;color:#E7EFEA;padding:88px 0}
.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px}
.form{background:var(--surface);color:var(--text);padding:24px;border-radius:8px;border:1px solid rgba(184,97,28,.35)}
.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 span{font-size:13px;font-weight:700}
.field input,.field select,.field textarea{height:48px;border:1px solid var(--line);border-radius:6px;padding:0 12px;background:#fff}
.field textarea{height:110px;padding:10px 12px;resize:vertical}
.field input.is-err,.field select.is-err,.field textarea.is-err{border-color:var(--c-primary)}
.err{color:var(--c-primary);font-size:12px;min-height:16px}
.form .btn{width:auto}
.form-ok{display:none;margin-top:10px;padding:10px 12px;background:#E8F4F1;color:var(--c-secondary);border-radius:6px;font-size:14px}
.side-card{border:1px solid rgba(214,178,58,.35);padding:22px;background:rgba(255,253,248,.04)}
.side-card h3{color:#FFFDF8;margin-bottom:10px}
.side-card p,.side-card a{color:#D5DDD8}
.side-card a{display:block;margin:6px 0;min-height:44px}
.site-footer{background:#121417;color:#C5CBC6;padding:48px 0 20px;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.1fr;gap:24px;margin-bottom:28px}
.site-footer h3{color:#F4EFE4;font-size:15px;margin-bottom:12px}
.site-footer a{color:#C5CBC6;display:block;min-height:32px}
.site-footer a:hover{color:var(--c-accent)}
.legal{border-top:1px solid #2A2F34;padding-top:14px;font-size:12px;color:#8B938E;display:flex;flex-wrap:wrap;gap:8px 18px}
@media (max-width:1199px){
  .hero-copy h1{font-size:38px}
  .adv-grid,.quote-grid,.stats-grid{grid-template-columns:repeat(3,1fr)}
  .prod-grid,.scene-grid,.guard{grid-template-columns:1fr 1fr}
  .prod.feature{transform:none}
  .timeline{grid-template-columns:repeat(3,1fr)}
  .timeline:before{display:none}
  .logo-wall{grid-template-columns:repeat(4,1fr)}
  .cap-photo img{height:380px}
}
@media (max-width:991px){
  .sec{padding:64px 0}
  .nav-links,.nav-cta{display:none}
  .burger{display:flex}
  .drawer{display:block;position:fixed;inset:var(--nav-h) 0 0 0;background:var(--surface);transform:translateX(110%);transition:transform .25s ease;overflow:auto;z-index:40;border-top:1px solid var(--line)}
  .drawer.is-open{transform:none}
  .drawer a{display:flex;align-items:center;min-height:48px;padding:12px 22px;border-bottom:1px solid var(--line);color:var(--text);font-weight:700}
  .hero-grid,.cap-grid,.case-layout,.contact-grid{grid-template-columns:1fr}
  .hero{min-height:auto}
  .hero-grid{min-height:auto;padding:36px 0 88px}
  .hero-dots{flex-direction:row;top:auto;bottom:18px;right:50%;transform:translateX(50%)}
  .hero-ctrl{right:16px;bottom:18px}
  .bento{grid-template-columns:1fr 1fr}
  .bento .big{grid-row:auto;min-height:240px}
  .sub-only{display:none}
  .news{grid-template-columns:120px 1fr}
  .news img{display:none}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{width:min(var(--w),calc(100% - 28px))}
  .top-meta span:nth-child(2),.top-meta span:nth-child(3){display:none}
  .hero-copy h1{font-size:28px}
  .sec-head h2,.case-idea h2{font-size:24px}
  .adv-grid,.quote-grid,.stats-grid,.prod-grid,.scene-grid,.guard,.bento,.timeline,.logo-wall,.form-grid,.foot-grid{grid-template-columns:1fr}
  .cap-facts{grid-template-columns:1fr}
  .cap-photo img{height:240px}
  .form .btn{width:100%}
  .stats-grid{grid-template-columns:1fr 1fr}
  .case-wall{grid-template-columns:1fr}
  .hero-actions .btn-line{display:none}
  .quiz{margin-top:8px}
}
@media (max-width:520px){
  .hero-copy h1{font-size:24px}
  .stat b{font-size:26px}
  .topbar .container{justify-content:flex-start}
  .legal{flex-direction:column}
}