/* roulang page: index */
:root {
      --bg: #070D18;
      --bg-elev: #0B1A2E;
      --navy: #0E2A4A;
      --tech: #1C4F9C;
      --glow: #3D7EFF;
      --gold: #C6A35A;
      --ink: #E8EEF7;
      --muted: #9AA8BC;
      --danger: #B4233A;
      --glass: rgba(16, 36, 64, .48);
      --glass-border: rgba(198, 163, 90, .22);
      --glass-border-blue: rgba(61, 126, 255, .28);
      --radius-card: 14px;
      --radius-btn: 999px;
      --shadow-glow: 0 0 0 1px rgba(61, 126, 255, .28), 0 10px 32px rgba(28, 79, 156, .38), 0 0 48px rgba(61, 126, 255, .18);
      --container: 1160px;
      --header-h: 108px;
      --ease: cubic-bezier(.22, .8, .24, 1);
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    html, body { margin: 0; padding: 0; }
    body {
      font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      font-size: 16px;
      line-height: 1.75;
      color: var(--ink);
      background:
        radial-gradient(1200px 640px at 12% -10%, rgba(61, 126, 255, .16), transparent 55%),
        radial-gradient(900px 500px at 92% 8%, rgba(198, 163, 90, .08), transparent 50%),
        var(--bg);
      overflow-x: hidden;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font-family: inherit; }
    button { cursor: pointer; border: 0; background: none; color: inherit; }
    ul, ol { margin: 0; padding: 0; list-style: none; }
    h1, h2, h3, h4 { font-family: "Noto Serif SC", "Noto Serif SC", serif; line-height: 1.28; margin: 0; font-weight: 700; letter-spacing: .02em; }
    p { margin: 0; }
    :focus-visible {
      outline: 2px solid var(--gold);
      outline-offset: 3px;
      box-shadow: 0 0 0 4px rgba(61, 126, 255, .35);
    }
    .sr-only {
      position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
      overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
    }
    .container { width: min(100% - 40px, var(--container)); margin-inline: auto; }
    .section { padding: 88px 0; position: relative; }
    .section-head { max-width: 720px; margin-bottom: 36px; }
    .section-head.wide { max-width: 820px; }
    .kicker {
      display: inline-flex; align-items: center; gap: 8px;
      color: var(--gold); font-size: 13px; letter-spacing: .18em;
      text-transform: none; font-weight: 600; margin-bottom: 12px;
    }
    .kicker::before {
      content: ""; width: 18px; height: 1px; background: var(--gold);
    }
    .section h2 { font-size: clamp(26px, 3vw, 34px); color: var(--ink); margin-bottom: 14px; }
    .lede { color: var(--muted); font-size: 16px; line-height: 1.8; }
    .gold-line {
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(198,163,90,.55), transparent);
      border: 0; margin: 0;
    }

    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 48px; padding: 0 22px; border-radius: var(--radius-btn);
      font-size: 15px; font-weight: 600; letter-spacing: .04em;
      transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s, border-color .2s, filter .2s;
      white-space: nowrap;
    }
    .btn-glow {
      background: linear-gradient(180deg, #4b8aff 0%, #1C4F9C 100%);
      color: #fff;
      border: 1px solid rgba(198, 163, 90, .5);
      box-shadow: var(--shadow-glow);
    }
    .btn-glow:hover { transform: translateY(-2px); filter: brightness(1.08); box-shadow: 0 0 0 1px rgba(61,126,255,.45), 0 12px 40px rgba(61,126,255,.5), 0 0 64px rgba(61,126,255,.28); }
    .btn-glow:active { transform: translateY(1px); filter: brightness(.96); }
    .btn-glass {
      background: rgba(14, 42, 74, .42);
      border: 1px solid var(--glass-border-blue);
      color: var(--ink);
      backdrop-filter: blur(16px) saturate(1.2);
      -webkit-backdrop-filter: blur(16px) saturate(1.2);
    }
    .btn-glass:hover { border-color: var(--gold); transform: translateY(-2px); }
    .btn-glass:active { transform: translateY(1px); }
    .badge {
      display: inline-flex; align-items: center; gap: 6px;
      min-height: 28px; padding: 0 10px; border-radius: 999px;
      font-size: 12px; font-weight: 600; letter-spacing: .04em;
      border: 1px solid var(--glass-border);
      background: rgba(198, 163, 90, .1); color: var(--gold);
    }
    .badge-blue {
      border-color: var(--glass-border-blue);
      background: rgba(61, 126, 255, .12); color: #c9dcff;
    }
    .glass-card {
      background: var(--glass);
      border: 1px solid var(--glass-border-blue);
      border-radius: var(--radius-card);
      backdrop-filter: blur(16px) saturate(1.2);
      -webkit-backdrop-filter: blur(16px) saturate(1.2);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.06), 0 18px 40px rgba(0,0,0,.22);
    }
    .glass-card.gold-edge { border-color: var(--glass-border); }

    .site-header {
      position: sticky; top: 0; z-index: 80;
      transition: box-shadow .25s, background .25s;
    }
    .site-header.is-scrolled .nav-bar {
      background: rgba(7, 13, 24, .72);
      backdrop-filter: blur(18px) saturate(1.2);
      -webkit-backdrop-filter: blur(18px) saturate(1.2);
    }
    .site-header.is-scrolled .nav-inner { min-height: 64px; }
    .utility-bar {
      background: #050910;
      border-bottom: 1px solid rgba(198, 163, 90, .16);
      font-size: 12px; color: var(--muted);
    }
    .utility-inner {
      min-height: 36px; display: flex; align-items: center; justify-content: space-between; gap: 16px;
    }
    .utility-inner a { color: #d5e4ff; }
    .utility-inner a:hover { color: var(--gold); }
    .util-loc, .util-phone, .util-meta { display: inline-flex; align-items: center; gap: 6px; }
    .nav-bar {
      background: rgba(11, 26, 46, .78);
      border-bottom: 1px solid rgba(61, 126, 255, .16);
    }
    .nav-inner {
      min-height: 72px; display: flex; align-items: center; gap: 20px;
      transition: min-height .25s;
    }
    .brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
    .brand-mark {
      width: 40px; height: 40px; border-radius: 10px;
      display: grid; place-items: center;
      font-family: "Noto Serif SC", serif; font-size: 18px; color: var(--gold);
      border: 1px solid rgba(198,163,90,.55);
      background: radial-gradient(circle at 30% 20%, rgba(61,126,255,.35), #0E2A4A 62%);
      box-shadow: 0 0 16px rgba(61,126,255,.25);
    }
    .brand-text { display: flex; flex-direction: column; line-height: 1.15; }
    .brand-text strong { font-family: "Noto Serif SC", serif; font-size: 16px; }
    .brand-text span { font-size: 12px; color: var(--gold); letter-spacing: .12em; }
    .desktop-nav { display: flex; align-items: center; gap: 4px; margin-left: auto; flex-wrap: wrap; justify-content: flex-end; }
    .desktop-nav a {
      padding: 8px 10px; font-size: 14px; color: var(--muted); border-radius: 8px;
      transition: color .2s, background .2s;
    }
    .desktop-nav a:hover, .desktop-nav a.is-active { color: var(--ink); background: rgba(61,126,255,.12); }
    .nav-cta { flex-shrink: 0; min-height: 44px; padding: 0 18px; font-size: 14px; }
    .menu-toggle {
      display: none; width: 44px; height: 44px; border-radius: 10px;
      border: 1px solid var(--glass-border-blue); background: rgba(14,42,74,.5);
    }
    .menu-toggle span, .menu-toggle span::before, .menu-toggle span::after {
      display: block; width: 18px; height: 2px; background: var(--ink); border-radius: 2px; 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-backdrop {
      position: fixed; inset: 0; background: rgba(2, 6, 14, .55); z-index: 90;
      opacity: 0; pointer-events: none; transition: opacity .25s;
    }
    .drawer-backdrop.show { opacity: 1; pointer-events: auto; }
    .drawer {
      position: fixed; inset: 0 0 0 auto; width: min(86vw, 360px); z-index: 100;
      background: rgba(7, 13, 24, .86);
      backdrop-filter: blur(22px) saturate(1.2);
      -webkit-backdrop-filter: blur(22px) saturate(1.2);
      border-left: 1px solid var(--glass-border-blue);
      transform: translateX(100%); transition: transform .28s var(--ease);
      display: flex; flex-direction: column; padding: 24px 22px 32px;
    }
    .drawer.show { transform: translateX(0); }
    .drawer-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
    .drawer nav { display: flex; flex-direction: column; gap: 6px; }
    .drawer nav a {
      min-height: 48px; display: flex; align-items: center; padding: 0 12px;
      border-radius: 10px; color: var(--ink); border: 1px solid transparent;
    }
    .drawer nav a:hover, .drawer nav a:focus-visible { border-color: var(--gold); background: rgba(61,126,255,.1); }
    .drawer-close {
      width: 44px; height: 44px; border-radius: 10px; border: 1px solid var(--glass-border);
      font-size: 22px;
    }

    .hero { position: relative; min-height: calc(100vh - 108px); min-height: 640px; }
    .hero-slider { position: relative; overflow: hidden; min-height: inherit; }
    .slide {
      position: absolute; inset: 0; opacity: 0; visibility: hidden;
      transition: opacity .7s ease, visibility .7s;
    }
    .slide.is-active { opacity: 1; visibility: visible; position: relative; }
    .slide img {
      width: 100%; height: min(86vh, 760px); object-fit: cover; filter: saturate(.85) contrast(1.05);
    }
    .slide-mask {
      position: absolute; inset: 0;
      background:
        linear-gradient(90deg, rgba(7,13,24,.88) 8%, rgba(7,13,24,.55) 48%, rgba(7,13,24,.28) 100%),
        linear-gradient(180deg, rgba(7,13,24,.2), rgba(7,13,24,.72));
    }
    .hero-copy {
      position: absolute; inset: 0; display: flex; align-items: center;
    }
    .hero-panel {
      max-width: 680px; padding: 28px 28px 24px;
      background: rgba(8, 18, 34, .46);
      border: 1px solid var(--glass-border-blue);
      border-radius: 16px;
      backdrop-filter: blur(16px) saturate(1.2);
      -webkit-backdrop-filter: blur(16px) saturate(1.2);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.08);
    }
    .region-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
    .region-chip {
      min-height: 32px; padding: 0 12px; border-radius: 999px; font-size: 12px;
      border: 1px solid rgba(198,163,90,.3); color: #e8d7a8; background: rgba(14,42,74,.45);
    }
    .hero h1, .hero-title {
      font-size: clamp(32px, 4.4vw, 50px); margin-bottom: 16px;
    }
    .hero-desc { color: #c9d4e4; font-size: 16px; margin-bottom: 22px; max-width: 62ch; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-local {
      margin-top: 18px; display: flex; flex-wrap: wrap; gap: 10px 18px;
      color: var(--muted); font-size: 13px;
    }
    .hero-local a { color: #d5e4ff; border-bottom: 1px solid rgba(61,126,255,.4); }
    .hero-local a:hover { color: var(--gold); }
    .slider-ui {
      position: absolute; left: 0; right: 0; bottom: 22px;
      display: flex; align-items: center; justify-content: space-between;
      width: min(100% - 40px, var(--container)); margin-inline: auto; z-index: 3;
    }
    .dots { display: flex; gap: 8px; }
    .dots button {
      width: 10px; height: 10px; border-radius: 50%;
      background: rgba(232,238,247,.35); border: 1px solid rgba(198,163,90,.3);
    }
    .dots button.is-active { background: var(--gold); width: 22px; border-radius: 8px; }
    .slider-arrows { display: flex; gap: 8px; }
    .slider-arrows button, .slider-pause {
      width: 44px; height: 44px; border-radius: 12px;
      border: 1px solid var(--glass-border-blue); background: rgba(7,13,24,.55); color: var(--ink);
    }
    .slider-arrows button:hover, .slider-pause:hover { border-color: var(--gold); }

    .trust-bar { padding: 22px 0 8px; }
    .trust-track {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
    }
    .trust-item {
      padding: 16px 16px 14px; display: grid; grid-template-columns: 36px 1fr; gap: 12px; align-items: start;
    }
    .seal {
      width: 36px; height: 36px; border-radius: 50%;
      display: grid; place-items: center; font-size: 12px; color: var(--gold);
      border: 1px dashed rgba(198,163,90,.55);
    }
    .trust-item strong { display: block; font-size: 14px; font-weight: 650; margin-bottom: 4px; }
    .trust-item span { font-size: 13px; color: var(--muted); }

    .intro-grid {
      display: grid; grid-template-columns: 1.05fr .95fr; gap: 36px; align-items: center;
    }
    .intro-visual { position: relative; }
    .intro-visual img {
      width: 100%; height: 460px; object-fit: cover; border-radius: 16px;
      border: 1px solid var(--glass-border-blue);
    }
    .intro-float {
      position: absolute; left: 18px; bottom: 18px; right: 18px; padding: 14px 16px;
    }
    .deliver-list { margin-top: 18px; display: grid; gap: 10px; }
    .deliver-list li {
      display: grid; grid-template-columns: 18px 1fr; gap: 10px; color: #d7e2f0; font-size: 15px;
    }
    .deliver-list li::before { content: ""; width: 8px; height: 8px; margin-top: 8px; border-radius: 50%; background: var(--gold); }
    .fit-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 22px; }
    .fit-card { padding: 16px 18px; }
    .fit-card h3 { font-size: 18px; margin-bottom: 8px; }
    .fit-card p { color: var(--muted); font-size: 14px; }

    .cluster { display: grid; grid-template-columns: 240px 1fr; gap: 22px; }
    .cluster-index { display: flex; flex-direction: column; gap: 8px; }
    .cluster-index button {
      text-align: left; min-height: 48px; padding: 10px 14px; border-radius: 12px;
      border: 1px solid transparent; color: var(--muted); background: rgba(14,42,74,.35);
    }
    .cluster-index button.is-active, .cluster-index button:hover {
      color: var(--ink); border-color: var(--gold); background: rgba(61,126,255,.12);
    }
    .cluster-panel { padding: 28px; min-height: 320px; }
    .cluster-panel h3 { font-size: 22px; margin-bottom: 10px; }
    .cluster-panel p { color: var(--muted); margin-bottom: 16px; }
    .mini-list { display: grid; gap: 8px; margin-bottom: 18px; }
    .mini-list li { padding-left: 14px; position: relative; color: #d5deea; font-size: 15px; }
    .mini-list li::before { content: ""; position: absolute; left: 0; top: 10px; width: 6px; height: 1px; background: var(--gold); }
    .cluster-panel[hidden] { display: none; }

    .adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .adv-card { padding: 22px 22px 20px; transition: transform .22s var(--ease), box-shadow .22s, border-color .22s; }
    .adv-card:hover { transform: translateY(-6px); border-color: var(--gold); box-shadow: 0 16px 36px rgba(28,79,156,.28); }
    .adv-card:nth-child(2), .adv-card:nth-child(5) { transform: translateY(12px); }
    .adv-card:nth-child(2):hover, .adv-card:nth-child(5):hover { transform: translateY(6px); }
    .adv-no { font-family: "Noto Sans SC", sans-serif; font-variant-numeric: tabular-nums; color: var(--gold); font-size: 13px; letter-spacing: .16em; }
    .adv-card h3 { font-size: 20px; margin: 8px 0 10px; }
    .adv-card p { color: var(--muted); font-size: 14.5px; }

    .scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .scene-card { overflow: hidden; display: flex; flex-direction: column; transition: transform .22s var(--ease); }
    .scene-card:hover { transform: translateY(-5px); }
    .scene-card img { width: 100%; height: 180px; object-fit: cover; }
    .scene-card .body { padding: 16px 16px 18px; }
    .scene-card h3 { font-size: 18px; margin-bottom: 8px; }
    .scene-card p { color: var(--muted); font-size: 14px; margin-bottom: 12px; }
    .text-link { color: #c9dcff; font-size: 14px; font-weight: 600; }
    .text-link:hover { color: var(--gold); }

    .product-grid { display: grid; grid-template-columns: 1.25fr .85fr .85fr; gap: 16px; }
    .product-card { padding: 0; overflow: hidden; display: flex; flex-direction: column; }
    .product-card img { width: 100%; height: 190px; object-fit: cover; }
    .product-card.featured img { height: 240px; }
    .product-card .body { padding: 18px 18px 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
    .product-card h3 { font-size: 22px; }
    .meta { color: var(--muted); font-size: 14px; }
    .product-card .btn { margin-top: auto; align-self: flex-start; }

    .demo-wall { display: grid; grid-template-columns: 1.1fr .9fr; gap: 18px; }
    .doc-stage { padding: 18px; }
    .doc-paper {
      background: linear-gradient(180deg, #f4efe4, #e7dfd0);
      color: #1b2430; border-radius: 8px; min-height: 280px; padding: 18px 20px;
      box-shadow: inset 4px 0 0 #b4233a, 0 10px 24px rgba(0,0,0,.25);
      font-size: 13px; line-height: 1.7;
    }
    .doc-paper h3 { font-family: "Noto Serif SC", serif; font-size: 16px; margin-bottom: 8px; color: #1b2430; }
    .doc-paper ol { padding-left: 18px; list-style: decimal; }
    .matrix { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 10px; }
    .matrix span { display: block; padding: 10px 8px; border-radius: 8px; text-align: center; font-size: 12px; }
    .risk-h { background: #f3c1c8; }
    .risk-m { background: #f3e1b5; }
    .risk-l { background: #cfe3c8; }
    .redline { border-left: 3px solid #b4233a; padding-left: 10px; margin: 8px 0; }
    .strike { text-decoration: line-through; color: #8a3b45; }
    .add { color: #1c5a32; }
    .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 16px; }
    .steps li { padding: 12px; text-align: center; }
    .steps strong { display: block; color: var(--gold); font-size: 12px; margin-bottom: 4px; }
    .steps span { font-size: 13px; color: var(--muted); }

    .dark-band {
      padding: 72px 0;
      background:
        linear-gradient(180deg, rgba(7,13,24,.55), rgba(7,13,24,.78)),
        url("/assets/images/26246ef593d03ba8.jpg") center/cover no-repeat;
    }
    .dark-grid { display: grid; grid-template-columns: 1.3fr .7fr; gap: 22px; }
    .case-main { padding: 28px; }
    .case-main h2 { margin-bottom: 12px; }
    .idea-list { padding: 24px; }
    .idea-list li { padding: 12px 0; border-bottom: 1px solid rgba(198,163,90,.18); color: #d7e2f0; }
    .idea-list li:last-child { border-bottom: 0; }

    .case-mag { display: grid; grid-template-columns: 1.2fr 1fr; gap: 16px; }
    .case-feature { overflow: hidden; }
    .case-feature img { width: 100%; height: 250px; object-fit: cover; }
    .case-feature .body, .case-item { padding: 18px; }
    .case-list { display: grid; gap: 12px; }
    .case-item { display: grid; grid-template-columns: 96px 1fr; gap: 12px; align-items: center; }
    .case-item img { width: 96px; height: 72px; object-fit: cover; border-radius: 8px; }
    .case-item h3, .case-feature h3 { font-size: 18px; margin-bottom: 6px; }
    .case-item p, .case-feature p { color: var(--muted); font-size: 14px; }

    .story-list { display: grid; gap: 16px; }
    .story {
      display: grid; grid-template-columns: 180px 1fr; gap: 18px; padding: 16px;
    }
    .story img { width: 100%; height: 180px; object-fit: cover; border-radius: 12px; }
    .quote { font-size: 16px; color: #dce6f3; }
    .quote-who { margin-top: 12px; color: var(--gold); font-size: 13px; }

    .price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; align-items: stretch; }
    .price-card { padding: 24px 22px; display: flex; flex-direction: column; gap: 10px; }
    .price-card.recommended {
      border: 1px solid rgba(198,163,90,.7);
      transform: translateY(-10px);
      box-shadow: 0 0 0 1px rgba(198,163,90,.25), 0 18px 44px rgba(61,126,255,.22);
    }
    .price { font-family: "Noto Sans SC", sans-serif; font-variant-numeric: tabular-nums; font-size: 28px; color: #fff; }
    .price small { font-size: 14px; color: var(--muted); font-weight: 500; }
    .price-card ul { display: grid; gap: 8px; margin: 8px 0 12px; }
    .price-card li { font-size: 14px; color: #d3deea; padding-left: 16px; position: relative; }
    .price-card li::before { content: "·"; position: absolute; left: 0; color: var(--gold); }
    .price-card .btn { margin-top: auto; }

    .stat-bar {
      padding: 48px 0;
      background: linear-gradient(90deg, #07101d, #0E2A4A 45%, #07101d);
      border-block: 1px solid rgba(61,126,255,.2);
    }
    .stat-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; text-align: center; }
    .stat-num { display: block; font-size: 32px; font-variant-numeric: tabular-nums; color: #fff; font-weight: 700; }
    .stat-grid span.label { color: var(--muted); font-size: 13px; }

    .quote-mosaic {
      display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: minmax(140px, auto); gap: 12px;
    }
    .q-card { padding: 16px; }
    .q-card:nth-child(1) { grid-column: span 2; }
    .q-card:nth-child(6) { grid-column: span 2; }
    .stars { color: var(--gold); letter-spacing: 2px; font-size: 12px; margin-bottom: 8px; }
    .q-card p { font-size: 14px; color: #d7e0ea; }
    .q-card footer { margin-top: 10px; color: var(--muted); font-size: 12px; display: flex; justify-content: space-between; gap: 8px; }

    .voice-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .voice-card { padding: 22px; }
    .voice-card h3 { font-size: 18px; margin-bottom: 8px; }
    .excerpt {
      margin-top: 10px; padding: 12px 14px; border-left: 2px solid var(--gold);
      color: #dce6f3; background: rgba(14,42,74,.35); font-size: 15px;
    }

    .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .news-card { overflow: hidden; transition: transform .22s var(--ease); }
    .news-card:hover { transform: translateY(-4px); }
    .news-card img { width: 100%; height: 160px; object-fit: cover; }
    .news-card .body { padding: 16px; }
    .news-card h3 { font-size: 18px; margin: 8px 0; }
    .news-card p { color: var(--muted); font-size: 14px; }

    .faq-list { display: grid; gap: 10px; }
    .faq-item { overflow: hidden; }
    .faq-item button {
      width: 100%; text-align: left; min-height: 56px; padding: 14px 18px;
      display: flex; justify-content: space-between; gap: 12px; align-items: center;
      font-size: 16px; font-weight: 600;
    }
    .faq-item .faq-a {
      display: none; padding: 0 18px 16px; color: var(--muted); font-size: 15px; max-width: 80ch;
    }
    .faq-item.is-open { border-left: 3px solid var(--gold); }
    .faq-item.is-open .faq-a { display: block; }
    .faq-item .chev { transition: transform .2s; }
    .faq-item.is-open .chev { transform: rotate(180deg); }

    .cta-band {
      padding: 72px 0 80px;
      background:
        radial-gradient(700px 300px at 80% 20%, rgba(61,126,255,.18), transparent 60%),
        var(--bg-elev);
    }
    .cta-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 24px; align-items: start; }
    .cta-copy { padding: 8px 8px 0 0; }
    .form-card { padding: 22px; }
    .form-grid { display: grid; gap: 12px; }
    label { display: block; font-size: 13px; color: #c9d4e4; margin-bottom: 6px; }
    input[type="text"], input[type="tel"], select, textarea {
      width: 100%; min-height: 46px; border-radius: 10px; padding: 10px 12px;
      background: rgba(7,13,24,.7); color: var(--ink);
      border: 1px solid rgba(61,126,255,.28);
    }
    input:focus, select:focus, textarea:focus {
      border-color: var(--gold);
      box-shadow: 0 0 0 3px rgba(61,126,255,.25);
      outline: none;
    }
    .checks { display: flex; flex-wrap: wrap; gap: 8px; }
    .checks label {
      margin: 0; min-height: 40px; padding: 0 12px; display: inline-flex; align-items: center; gap: 6px;
      border: 1px solid var(--glass-border-blue); border-radius: 999px; background: rgba(14,42,74,.4); color: var(--ink); font-size: 13px;
    }
    .error { color: var(--danger); font-size: 13px; min-height: 18px; }
    .form-note { color: var(--muted); font-size: 13px; margin-top: 10px; }
    .form-success {
      display: none; padding: 14px; border-radius: 10px; border: 1px solid var(--glass-border);
      background: rgba(198,163,90,.1); color: #e8d7a8; margin-bottom: 10px;
    }
    .form-success.show { display: block; }

    .site-footer {
      background: #050910; border-top: 1px solid rgba(198,163,90,.18); padding: 48px 0 24px;
      color: var(--muted); font-size: 14px;
    }
    .foot-grid { display: grid; grid-template-columns: 1.3fr .9fr .9fr 1fr; gap: 24px; margin-bottom: 28px; }
    .site-footer h3 { font-size: 16px; color: var(--ink); margin-bottom: 12px; }
    .site-footer a:hover { color: var(--gold); }
    .foot-links { display: grid; gap: 8px; }
    .disclaimer { font-size: 12px; line-height: 1.7; max-width: 70ch; }
    .foot-bottom {
      display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; align-items: center;
      padding-top: 18px; border-top: 1px solid rgba(61,126,255,.12);
    }

    @media (max-width: 1280px) {
      .desktop-nav a { padding: 8px 8px; font-size: 13px; }
    }
    @media (max-width: 1024px) {
      .trust-track, .adv-grid, .scene-grid, .product-grid, .stat-grid, .news-grid, .price-grid, .foot-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .intro-grid, .cluster, .demo-wall, .dark-grid, .case-mag, .cta-grid, .voice-row { grid-template-columns: 1fr; }
      .story { grid-template-columns: 140px 1fr; }
      .adv-card:nth-child(2), .adv-card:nth-child(5) { transform: none; }
      .price-card.recommended { transform: none; }
      .stat-grid { grid-template-columns: repeat(3, 1fr); }
      .utility-inner .util-loc { display: none; }
    }
    @media (max-width: 768px) {
      .utility-bar { display: none; }
      .desktop-nav { display: none; }
      .menu-toggle { display: grid; place-items: center; margin-left: auto; }
      .nav-inner { min-height: 64px; }
      .hero-panel { padding: 20px 16px; }
      .hero h1, .hero-title { font-size: 30px; }
      .section { padding: 64px 0; }
      .trust-track, .fit-grid, .adv-grid, .scene-grid, .product-grid, .news-grid, .price-grid, .quote-mosaic, .stat-grid, .foot-grid, .steps {
        grid-template-columns: 1fr;
      }
      .cluster-index { flex-direction: row; overflow-x: auto; gap: 8px; }
      .cluster-index button { flex: 0 0 auto; white-space: nowrap; }
      .q-card:nth-child(1), .q-card:nth-child(6) { grid-column: auto; }
      .story, .case-item { grid-template-columns: 1fr; }
      .story img { height: 200px; }
      .slider-ui { bottom: 12px; }
      .container { width: min(100% - 28px, var(--container)); }
    }
    @media (max-width: 520px) {
      .hero-actions .btn { width: 100%; }
      .nav-cta { padding: 0 12px; font-size: 13px; }
      .brand-text strong { font-size: 14px; }
      .intro-visual img { height: 260px; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { transition: none !important; animation: none !important; }
    }
    @media print {
      .site-header, .slider-ui, .menu-toggle, .drawer, .btn-glow, .cta-band { display: none !important; }
      body { background: #fff; color: #111; }
    }

/* roulang page: index */
:root{
  --ink:#0B1C3D;
  --navy:#102A54;
  --deep:#071326;
  --cyan:#4EE3F0;
  --cyan-2:#1A6BDB;
  --gold:#C4A46C;
  --gold-2:#E6D3A3;
  --text:#E8EEF8;
  --muted:#9BB0CC;
  --weak:#6F86A8;
  --line:rgba(78,227,240,.25);
  --line-weak:rgba(196,164,108,.28);
  --glass:rgba(12,28,58,.62);
  --glass-2:rgba(12,28,58,.72);
  --glass-3:rgba(8,20,42,.55);
  --card-r:14px;
  --shadow:0 18px 40px rgba(2,8,20,.45), inset 0 1px 0 rgba(255,255,255,.06);
  --glow:0 0 24px rgba(78,227,240,.45);
  --space:28px;
  --w:1240px;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --mono:"JetBrains Mono","SFMono-Regular",ui-monospace,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:92px}
html,body{margin:0;padding:0}
body{
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:
    radial-gradient(1200px 560px at 50% -10%,rgba(78,227,240,.14),transparent 55%),
    radial-gradient(900px 500px at 100% 20%,rgba(16,42,84,.9),transparent 50%),
    linear-gradient(180deg,#081427 0%,var(--ink) 18%,#0A1836 100%);
  min-height:100%;
  overflow-x:hidden;
}
body::before{
  content:"";
  pointer-events:none;
  position:fixed;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:48px 48px;
  opacity:.35;
  z-index:0;
}
a{color:var(--cyan);text-decoration:none;transition:color .2s,opacity .2s}
a:hover{color:var(--gold-2)}
img{max-width:100%;height:auto;display:block}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;box-shadow:0 0 0 4px rgba(78,227,240,.35)}
::selection{background:rgba(78,227,240,.28);color:#fff}
.skip{
  position:absolute;left:-999px;top:8px;z-index:2000;
  background:var(--cyan);color:var(--ink);padding:8px 12px;border-radius:8px;
}
.skip:focus{left:8px}
.container{width:min(var(--w),calc(100% - 48px));margin:0 auto}
.site-header{position:relative;z-index:50}
.topbar{
  background:rgba(7,19,38,.78);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(78,227,240,.12);
  font-size:13px;color:var(--muted);
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px}
.topbar-links{display:flex;gap:18px;flex-wrap:wrap;align-items:center}
.topbar-links a{color:var(--muted);display:inline-flex;align-items:center;gap:6px;min-height:32px}
.topbar-links a:hover{color:var(--cyan)}
.topbar-cta{color:var(--gold)!important;font-weight:600}
.icon-dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px var(--cyan);display:inline-block}
.mainbar{
  position:sticky;top:0;z-index:60;
  background:rgba(11,28,61,.52);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(78,227,240,.16);
  transition:background .25s,box-shadow .25s;
}
.mainbar.is-stuck{
  background:rgba(8,20,42,.86);
  box-shadow:0 10px 30px rgba(0,0,0,.28);
}
.mainbar-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);min-height:44px}
.logo-mark{
  width:36px;height:36px;flex:0 0 36px;color:var(--gold);
  display:grid;place-items:center;
  border:1px solid var(--line-weak);border-radius:10px;
  background:rgba(196,164,108,.08);
}
.logo-text{font-family:var(--serif);font-weight:700;font-size:18px;letter-spacing:.02em;line-height:1.2}
.logo-text strong{font-weight:700;color:var(--gold-2)}
.nav-desktop{display:flex;align-items:center;gap:6px}
.nav-desktop a{
  color:var(--muted);padding:10px 12px;min-height:44px;display:inline-flex;align-items:center;
  font-size:14px;position:relative;border-radius:8px;
}
.nav-desktop a:hover{color:var(--text);background:rgba(78,227,240,.06)}
.nav-desktop a.is-active{color:var(--cyan)}
.nav-desktop a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--gold));
  box-shadow:0 0 10px var(--cyan);border-radius:2px;
}
.nav-cta{margin-left:8px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 18px;border-radius:12px;font-weight:600;font-size:14px;
  transition:transform .2s,box-shadow .2s,background .2s,border-color .2s,opacity .2s;
  border:1px solid transparent;letter-spacing:.02em;white-space:nowrap;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(1px)}
.btn-primary{
  color:#062033;
  background:linear-gradient(135deg,#4EE3F0 0%,#2AA4E8 48%,#1A6BDB 100%);
  box-shadow:var(--glow);
}
.btn-primary:hover{box-shadow:0 0 32px rgba(78,227,240,.7)}
.btn-ghost{
  color:var(--text);
  background:rgba(12,28,58,.4);
  border-color:rgba(78,227,240,.35);
  backdrop-filter:blur(10px);
}
.btn-ghost:hover{border-color:var(--cyan);box-shadow:0 0 16px rgba(78,227,240,.25)}
.btn-gold{
  color:#1b1408;background:linear-gradient(135deg,#E6D3A3,#C4A46C);
  box-shadow:0 0 18px rgba(196,164,108,.35);
}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);color:var(--cyan);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:currentColor;transition:transform .2s,opacity .2s}
.drawer{
  position:fixed;inset:0;background:rgba(4,10,22,.72);backdrop-filter:blur(8px);
  z-index:80;opacity:0;visibility:hidden;transition:opacity .25s,visibility .25s;
}
.drawer.open{opacity:1;visibility:visible}
.drawer-panel{
  position:absolute;right:0;top:0;height:100%;width:min(86vw,380px);
  background:rgba(10,22,48,.92);border-left:1px solid var(--line);
  padding:22px 18px 28px;display:flex;flex-direction:column;gap:12px;
  transform:translateX(24px);transition:transform .25s;
}
.drawer.open .drawer-panel{transform:none}
.drawer-close{align-self:flex-end;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;color:var(--text)}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-top:8px}
.drawer-nav a{
  min-height:48px;display:flex;align-items:center;padding:0 14px;border-radius:12px;
  color:var(--text);background:rgba(78,227,240,.04);border:1px solid transparent;font-size:16px;
}
.drawer-nav a:hover,.drawer-nav a:focus{border-color:var(--line);color:var(--cyan)}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px}
main{position:relative;z-index:1}
.hero{position:relative;min-height:calc(100vh - 108px);overflow:hidden}
.hero-track{display:flex;height:100%;transition:transform .35s ease}
.hero-slide{
  min-width:100%;position:relative;min-height:calc(100vh - 108px);
  background:#071326 center/cover no-repeat;
  display:flex;align-items:center;
}
.hero-slide::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(90deg,rgba(7,19,38,.88) 8%,rgba(7,19,38,.55) 48%,rgba(7,19,38,.35) 100%),
    radial-gradient(600px 280px at 70% 40%,rgba(78,227,240,.12),transparent 70%);
}
.hero-content{position:relative;z-index:2;padding:54px 0 88px;display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:center;width:min(var(--w),calc(100% - 48px));margin:0 auto}
.hero-glass{
  background:rgba(12,28,58,.58);backdrop-filter:blur(16px) saturate(140%);
  border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);
  padding:28px 28px 24px;
}
.region-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.tag{
  display:inline-flex;align-items:center;gap:6px;min-height:32px;padding:0 10px;
  border-radius:999px;font-size:12px;color:var(--gold-2);
  border:1px solid var(--line-weak);background:rgba(196,164,108,.08);
}
.tag i{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px var(--cyan)}
.kicker{font-size:12px;letter-spacing:.18em;color:var(--cyan);text-transform:none;margin-bottom:10px}
h1,.slide-title{
  font-family:var(--serif);font-size:clamp(30px,4.2vw,46px);line-height:1.22;font-weight:700;
  letter-spacing:.02em;margin-bottom:12px;
}
.subhead{font-size:16px;color:var(--gold-2);margin-bottom:14px;line-height:1.7}
.hero-lead{font-size:15px;color:var(--muted);max-width:42em;margin-bottom:22px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}
.hero-map{
  background:rgba(12,28,58,.5);backdrop-filter:blur(16px) saturate(140%);
  border:1px solid var(--line);border-radius:16px;min-height:360px;position:relative;overflow:hidden;
  box-shadow:var(--shadow);
}
.map-grid{
  position:absolute;inset:18px;border-radius:12px;
  background:
    radial-gradient(circle at 62% 58%,rgba(78,227,240,.18),transparent 22%),
    linear-gradient(180deg,rgba(16,42,84,.3),rgba(7,19,38,.15));
  border:1px dashed rgba(78,227,240,.18);
}
.map-grid::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(78,227,240,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(78,227,240,.08) 1px,transparent 1px);
  background-size:32px 32px;
}
.map-pin{position:absolute;transform:translate(-50%,-100%);text-align:center;color:var(--text);font-size:12px}
.map-pin b{display:block;width:12px;height:12px;margin:0 auto 6px;border-radius:50% 50% 50% 0;background:var(--cyan);transform:rotate(-45deg);box-shadow:0 0 12px var(--cyan)}
.map-legend{position:absolute;left:16px;right:16px;bottom:14px;font-size:13px;color:var(--muted);background:rgba(7,19,38,.7);border:1px solid var(--line);border-radius:10px;padding:10px 12px}
.carousel-nav{position:absolute;z-index:3;bottom:22px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:14px}
.carousel-btn{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--line);color:var(--text);
  background:rgba(12,28,58,.55);backdrop-filter:blur(10px);
}
.carousel-btn:hover{border-color:var(--cyan);color:var(--cyan)}
.dots{display:flex;gap:8px}
.dot{width:22px;height:8px;border-radius:99px;background:rgba(255,255,255,.22);border:0}
.dot.on{background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
.section{padding:96px 0;position:relative}
.section--navy{background:linear-gradient(180deg,rgba(16,42,84,.35),rgba(11,28,61,.2))}
.section--deep{background:linear-gradient(180deg,#071326,#0A1A38)}
.section-head{max-width:760px;margin:0 0 36px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
h2{
  font-family:var(--serif);font-size:clamp(26px,3vw,32px);line-height:1.3;font-weight:700;margin-bottom:12px;
}
h3{font-family:var(--serif);font-size:20px;line-height:1.4;font-weight:700}
.lead{color:var(--muted);font-size:15px;max-width:48em}
.glass{
  background:var(--glass);backdrop-filter:blur(16px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--card-r);box-shadow:var(--shadow);
}
.split{display:grid;grid-template-columns:5fr 7fr;gap:28px;align-items:center}
.split.reverse{grid-template-columns:7fr 5fr}
.split-media{position:relative;border-radius:16px;overflow:hidden;min-height:360px;border:1px solid var(--line)}
.split-media img{width:100%;height:100%;object-fit:cover;min-height:360px}
.split-media .caption{
  position:absolute;left:12px;bottom:12px;font-size:12px;color:var(--gold-2);
  background:rgba(7,19,38,.72);padding:6px 10px;border-radius:8px;border:1px solid var(--line-weak);
}
.badge-row{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}
.seal{
  min-height:34px;padding:0 12px;border-radius:999px;display:inline-flex;align-items:center;gap:6px;
  border:1px solid var(--line-weak);color:var(--gold-2);font-size:12px;background:rgba(196,164,108,.08);
}
.ticks{margin-top:14px;display:grid;gap:8px}
.ticks li{padding-left:18px;position:relative;color:var(--muted);font-size:15px}
.ticks li::before{content:"";position:absolute;left:0;top:.7em;width:8px;height:8px;border:1px solid var(--cyan);transform:rotate(45deg)}
.fit-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:22px}
.fit-card{padding:16px;border-radius:12px;border:1px solid var(--line);background:rgba(8,20,42,.45)}
.fit-card h3{font-size:16px;margin-bottom:8px;color:var(--cyan)}
.catalog-track{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(240px,1fr);gap:14px;overflow-x:auto;padding-bottom:8px;scroll-snap-type:x mandatory}
.catalog-card{scroll-snap-align:start;padding:0;overflow:hidden;min-width:240px;display:flex;flex-direction:column}
.catalog-card img{height:128px;width:100%;object-fit:cover}
.catalog-card .pad{padding:14px 16px 16px}
.catalog-card p{color:var(--muted);font-size:14px;margin-top:8px}
.bento{display:grid;grid-template-columns:1.35fr 1fr 1fr;grid-template-rows:auto auto;gap:16px}
.bento-card{padding:22px;min-height:180px;transition:border-color .2s,box-shadow .2s,transform .2s}
.bento-card:hover{border-color:rgba(78,227,240,.55);box-shadow:0 0 24px rgba(78,227,240,.18);transform:translateY(-2px)}
.bento-main{grid-row:1 / span 2;min-height:420px;display:flex;flex-direction:column}
.bento-main img{margin-top:auto;border-radius:12px;height:210px;object-fit:cover;width:100%}
.ico{width:28px;height:28px;margin-bottom:12px;color:var(--gold-2)}
.bento-card p,.glass-card p{color:var(--muted);font-size:14px;margin-top:8px}
.grid-6{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.glass-card{padding:22px;transition:border-color .2s,transform .2s,box-shadow .2s}
.glass-card:hover{transform:translateY(-2px);border-color:rgba(78,227,240,.5);box-shadow:0 0 22px rgba(78,227,240,.16)}
.mini{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.mini span{
  font-family:var(--mono);font-size:11px;color:var(--cyan);border:1px solid var(--line);
  border-radius:6px;padding:4px 8px;background:rgba(78,227,240,.06);
}
.scene-wrap{display:grid;grid-template-columns:1.35fr .65fr;gap:18px}
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.scene-item{padding:18px;min-height:210px}
.scene-item h3{margin:8px 0}
.scene-aside{padding:22px;display:flex;flex-direction:column;gap:12px}
.scene-aside .note{color:var(--muted);font-size:14px}
.product-stage{display:grid;grid-template-columns:1.25fr .85fr .85fr;gap:16px}
.product-card{padding:0;overflow:hidden;display:flex;flex-direction:column}
.product-card img{height:160px;object-fit:cover;width:100%}
.product-card .pad{padding:20px}
.product-card--lead{
  border-color:rgba(196,164,108,.55);
  box-shadow:0 0 0 1px rgba(196,164,108,.35),0 0 28px rgba(78,227,240,.22);
}
.product-card--lead img{height:210px}
.list-deliver{margin-top:12px;display:grid;gap:6px}
.list-deliver li{font-size:14px;color:var(--muted);padding-left:14px;position:relative}
.list-deliver li::before{content:"—";position:absolute;left:0;color:var(--gold)}
.price-line{margin-top:16px;font-family:var(--mono);color:var(--cyan);font-size:18px}
.demo-stage{display:grid;grid-template-columns:1.2fr .8fr;gap:20px;align-items:stretch}
.demo-window{
  position:relative;border-radius:16px;overflow:hidden;border:1px solid var(--line);
  background:#07111f;min-height:420px;
}
.demo-window img{width:100%;height:100%;object-fit:cover;min-height:420px;opacity:.78}
.scanlines{
  position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(0deg,rgba(78,227,240,.05) 0 1px,transparent 1px 5px);
  mix-blend-mode:screen;
}
.win-bar{
  position:absolute;left:12px;right:12px;top:12px;display:flex;justify-content:space-between;align-items:center;
  background:rgba(7,19,38,.78);border:1px solid var(--line);border-radius:10px;padding:8px 12px;font-size:12px;color:var(--gold-2);
}
.step-axis{display:grid;gap:10px}
.step{
  display:grid;grid-template-columns:44px 1fr;gap:12px;align-items:start;padding:12px;
  border:1px solid var(--line);border-radius:12px;background:rgba(12,28,58,.45);
}
.step b{font-family:var(--mono);color:var(--cyan);font-size:18px}
.principle{padding:88px 0;background:
  linear-gradient(180deg,rgba(4,10,22,.92),rgba(7,19,38,.92)),
  url("/assets/images/ae3d4427bc566ca1.jpg") center/cover;}
.quote-xl{font-family:var(--serif);font-size:clamp(22px,3vw,34px);line-height:1.45;max-width:18em}
.principle-points{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:28px}
.principle-points article{padding:18px;border-radius:12px;border:1px solid var(--line-weak);background:rgba(7,19,38,.55)}
.stamp{margin-top:22px;width:88px;height:88px;border:2px solid rgba(196,164,108,.35);border-radius:50%;display:grid;place-items:center;color:rgba(196,164,108,.7);font-size:12px;transform:rotate(-12deg);letter-spacing:.2em}
.timeline{display:grid;gap:16px;position:relative}
.timeline::before{content:"";position:absolute;left:12px;top:0;bottom:0;width:1px;background:linear-gradient(var(--cyan),transparent)}
.timeline-item{display:grid;grid-template-columns:28px 1fr;gap:16px}
.timeline-item .node{width:12px;height:12px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan);margin-top:18px}
.case-card{padding:20px}
.case-card .meta{font-size:12px;color:var(--gold-2);margin-bottom:6px}
.stories{display:grid;grid-template-columns:1.4fr .8fr;gap:16px}
.story-main{padding:0;overflow:hidden;display:grid;grid-template-columns:.9fr 1.1fr}
.story-main img{height:100%;object-fit:cover;min-height:280px}
.story-main .pad,.story-side article{padding:22px}
.story-side{display:grid;gap:16px}
.role{font-size:12px;color:var(--cyan);margin-bottom:8px}
.stats{
  display:grid;grid-template-columns:repeat(6,1fr);gap:0;
  background:linear-gradient(90deg,#071326,#0C2248 50%,#071326);
  border-block:1px solid var(--line);
}
.stat{padding:28px 16px;text-align:center;position:relative}
.stat + .stat::before{content:"";position:absolute;left:0;top:22%;bottom:22%;width:1px;background:rgba(78,227,240,.25);box-shadow:0 0 10px rgba(78,227,240,.4)}
.stat-num{font-family:var(--mono);font-size:28px;color:var(--cyan);display:block}
.stat span{color:var(--muted);font-size:13px}
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;align-items:stretch}
.plan{padding:24px;display:flex;flex-direction:column;gap:10px}
.plan--featured{
  transform:translateY(-8px);
  border-color:rgba(196,164,108,.6);
  box-shadow:0 0 0 1px rgba(196,164,108,.4),0 0 32px rgba(78,227,240,.2);
}
.plan .who{font-size:12px;color:var(--gold-2)}
.plan-price{font-family:var(--mono);font-size:28px;color:var(--cyan);margin:6px 0}
.inc b,.exc b{display:block;font-size:13px;margin:8px 0 4px;color:var(--text)}
.inc li,.exc li{font-size:14px;color:var(--muted);padding:3px 0}
.exc li{color:#9aa8bd}
.fine{font-size:12px;color:var(--weak);margin-top:auto;padding-top:12px}
.wall{columns:3;column-gap:14px}
.quote-card{break-inside:avoid;margin-bottom:14px;padding:16px 16px 18px;display:inline-block;width:100%}
.quote-card p{color:var(--muted);font-size:14px}
.chips{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:8px}
.chips em{font-style:normal;font-size:11px;border:1px solid var(--line);color:var(--cyan);border-radius:99px;padding:2px 8px}
.logos{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.logo-chip{
  min-height:44px;padding:0 14px;border:1px solid var(--line);border-radius:10px;
  display:inline-flex;align-items:center;color:var(--muted);font-size:13px;background:rgba(12,28,58,.4);
}
.endorsements{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.endorsements article{padding:22px}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.news-card{overflow:hidden;padding:0}
.news-card img{height:150px;width:100%;object-fit:cover}
.news-card .pad{padding:16px}
.news-card time{font-size:12px;color:var(--gold-2)}
.topic-index{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 22px}
.topic-index a{
  min-height:40px;padding:0 12px;border-radius:999px;border:1px solid var(--line);
  display:inline-flex;align-items:center;color:var(--text);font-size:13px;background:rgba(12,28,58,.4);
}
.topic-index a:hover{border-color:var(--cyan);color:var(--cyan)}
.share-bar{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.faq-list{display:grid;gap:10px}
.faq-item{border:1px solid var(--line);border-radius:12px;background:rgba(12,28,58,.55);overflow:hidden}
.faq-q{
  width:100%;text-align:left;min-height:52px;padding:14px 18px;color:var(--text);
  display:flex;justify-content:space-between;gap:12px;align-items:center;font-weight:600;
}
.faq-q span{color:var(--cyan);font-family:var(--mono)}
.faq-a{display:none;padding:0 18px 16px;color:var(--muted);font-size:15px}
.faq-item.open{background:rgba(12,28,58,.35)}
.faq-item.open .faq-a{display:block}
.cta-band{
  padding:80px 0;background:
    radial-gradient(700px 240px at 50% 0,rgba(78,227,240,.16),transparent 60%),
    linear-gradient(180deg,#071326,#0B1C3D);
  border-top:1px solid var(--line);
}
.cta-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:24px;align-items:start}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:12px}
.field label{font-size:13px;color:var(--gold-2)}
.field input,.field select,.field textarea{
  width:100%;min-height:44px;border-radius:10px;border:1px solid var(--line);
  background:rgba(7,19,38,.7);padding:10px 12px;color:var(--text);
}
.field textarea{min-height:110px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(78,227,240,.15);outline:none}
.field.error input,.field.error select,.field.error textarea{border-color:#4EE3F0}
.err{color:var(--cyan);font-size:12px;display:none}
.field.error .err{display:block}
.agree{font-size:12px;color:var(--weak);margin:8px 0 14px}
.form-msg{display:none;padding:10px 12px;border-radius:10px;border:1px solid var(--line);color:var(--cyan);margin-bottom:12px}
.form-msg.show{display:block}
.site-footer{
  background:#050d1c;border-top:1px solid rgba(78,227,240,.28);
  box-shadow:0 -8px 30px rgba(78,227,240,.08);padding:48px 0 22px;position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1.2fr 1fr;gap:22px}
.site-footer h3{font-size:16px;margin-bottom:12px;color:var(--gold-2)}
.site-footer p,.site-footer a,.site-footer li{color:var(--muted);font-size:14px}
.site-footer a:hover{color:var(--cyan)}
.foot-nav{display:grid;gap:8px}
.foot-nav a{min-height:32px;display:inline-flex;align-items:center}
.copy{margin-top:28px;padding-top:16px;border-top:1px solid rgba(255,255,255,.06);color:var(--weak);font-size:12px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
@media (max-width:1280px){
  .container,.hero-content{width:min(1140px,calc(100% - 40px))}
  .stats{grid-template-columns:repeat(3,1fr)}
  .stat:nth-child(n+4)::before{display:none}
}
@media (max-width:1024px){
  .nav-desktop{display:none}
  .nav-toggle{display:inline-flex}
  .hero-content,.split,.split.reverse,.bento,.scene-wrap,.product-stage,.demo-stage,.stories,.cta-grid,.footer-grid,.story-main{
    grid-template-columns:1fr;
  }
  .bento-main{grid-row:auto;min-height:auto}
  .principle-points,.plans,.news-grid,.grid-6,.fit-grid,.endorsements{grid-template-columns:1fr 1fr}
  .wall{columns:2}
  .plan--featured{transform:none}
  .hero-map{min-height:280px}
}
@media (max-width:768px){
  .container,.hero-content{width:calc(100% - 32px)}
  .section{padding:56px 0}
  .topbar-links span,.topbar-links .hide-m{display:none}
  .hero-content{padding:36px 0 80px}
  h1,.slide-title{font-size:30px}
  .grid-6,.principle-points,.plans,.news-grid,.fit-grid,.endorsements,.scene-grid,.stats{grid-template-columns:1fr}
  .wall{columns:1}
  .stat + .stat::before{display:none}
  .hero-map{display:none}
  .catalog-track{grid-auto-columns:minmax(220px,80%)}
}
@media (max-width:520px){
  body{font-size:15px}
  .mainbar-inner{min-height:64px}
  .logo-text{font-size:15px}
  .hero-glass{padding:18px}
  .hero-cta .btn{width:100%}
  .copy{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}