/* roulang page: index */
:root {
      --bg: #F4EEE4;
      --bg-alt: #E7DDD0;
      --surface: #FFFBF6;
      --ink: #2A211C;
      --ink-soft: #5C5148;
      --primary: #B85A2A;
      --primary-hover: #A44E24;
      --primary-ink: #FFF8F1;
      --accent: #2F6F62;
      --accent-hover: #275E53;
      --accent-soft: #E4F0EC;
      --dark: #241C18;
      --dark-fg: #F3E6D8;
      --line: #D9CBB8;
      --danger: #9B2E1F;
      --copper: #D4A574;
      --radius: 10px;
      --radius-sm: 8px;
      --radius-xs: 6px;
      --shadow: 0 8px 24px rgba(42, 33, 28, .08);
      --shadow-hover: 0 12px 28px rgba(42, 33, 28, .12);
      --container: 1200px;
      --pad: 24px;
      --header-main: 72px;
      --font: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; overflow-x: hidden; }
    body {
      margin: 0;
      font-family: var(--font);
      font-size: 16px;
      line-height: 1.75;
      color: var(--ink);
      background: var(--bg);
      overflow-x: hidden;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--accent); text-decoration: none; transition: color .2s, background .2s, border-color .2s, transform .2s, box-shadow .2s; }
    a:hover { color: var(--accent-hover); }
    button, input, select, textarea { font-family: inherit; font-size: inherit; }
    button { cursor: pointer; border: 0; background: none; }
    h1, h2, h3, h4, p, ul, ol, dl, figure { margin: 0; }
    ul, ol { padding: 0; list-style: none; }
    :focus { outline: none; }
    :focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
    ::selection { background: var(--primary); color: var(--primary-ink); }
    .container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--pad); }
    .skip {
      position: absolute; left: -999px; top: 0;
    }
    .skip:focus { left: 16px; top: 16px; z-index: 400; background: var(--surface); padding: 8px 12px; }

    .btn {
      display: inline-flex; align-items: center; justify-content: center;
      min-height: 44px; padding: 0 20px;
      border-radius: var(--radius-xs);
      font-weight: 600; letter-spacing: .02em;
      transition: background .2s, color .2s, border-color .2s, transform .2s, box-shadow .2s;
      text-align: center;
    }
    .btn-primary { background: var(--primary); color: var(--primary-ink); }
    .btn-primary:hover, .btn-primary:active { background: var(--primary-hover); color: var(--primary-ink); transform: translateY(-2px); box-shadow: var(--shadow); }
    .btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--accent); }
    .btn-ghost:hover { background: var(--accent); color: #fff; }
    .btn-light { background: var(--dark-fg); color: var(--ink); }
    .btn-light:hover { background: #fff; color: var(--ink); transform: translateY(-2px); }
    .btn-block { width: 100%; }
    .badge {
      display: inline-flex; align-items: center;
      height: 26px; padding: 0 10px;
      border-radius: 6px; font-size: 12px; font-weight: 600;
      background: var(--accent-soft); color: var(--accent);
    }
    .badge-warm { background: #F3E1D4; color: var(--primary); }
    .copper-line {
      width: 42px; height: 2px; background: var(--primary); margin: 14px 0 20px; border: 0;
    }
    .section { padding: 88px 0; }
    .section-alt { background: var(--bg-alt); }
    .section-head { max-width: 760px; margin-bottom: 40px; }
    .section-head h2 {
      font-size: 30px; line-height: 1.3; font-weight: 700; letter-spacing: -.02em;
    }
    .section-head p { color: var(--ink-soft); margin-top: 8px; }

    .site-header { position: sticky; top: 0; z-index: 120; background: var(--bg); }
    .header-top {
      background: #EDE4D8; border-bottom: 1px solid var(--line);
      font-size: 13px; color: var(--ink-soft);
    }
    .header-top-inner {
      display: flex; align-items: center; justify-content: space-between;
      min-height: 36px; gap: 16px;
    }
    .header-top a { color: var(--ink); margin-left: 16px; }
    .header-top a:hover { color: var(--primary); }
    .header-top .cta-link { color: var(--primary); font-weight: 600; }
    .header-main {
      min-height: var(--header-main);
      display: flex; align-items: center;
      transition: box-shadow .2s, border-color .2s;
      border-bottom: 1px solid transparent;
      background: var(--bg);
    }
    .header-main.is-stuck {
      border-bottom-color: var(--line);
      box-shadow: 0 8px 18px rgba(42, 33, 28, .06);
    }
    .header-main-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; width: 100%; }
    .logo { display: flex; align-items: center; gap: 10px; color: var(--ink); flex-shrink: 0; }
    .logo:hover { color: var(--ink); }
    .logo-mark {
      width: 40px; height: 40px; border-radius: 8px;
      background: var(--primary); position: relative; flex-shrink: 0;
    }
    .logo-mark::before {
      content: ""; position: absolute; left: 8px; right: 8px; top: 11px; height: 8px;
      border: 2px solid var(--primary-ink); border-radius: 3px 3px 6px 6px;
    }
    .logo-mark::after {
      content: ""; position: absolute; left: 50%; bottom: 8px; width: 14px; height: 8px;
      margin-left: -7px; border: 2px solid var(--primary-ink); border-top: 0; border-radius: 0 0 6px 6px;
    }
    .logo-text { display: flex; flex-direction: column; line-height: 1.15; }
    .logo-text strong { font-size: 15px; letter-spacing: .04em; }
    .logo-text span { font-size: 12px; color: var(--ink-soft); font-weight: 600; }
    .site-nav { display: flex; align-items: center; gap: 8px; }
    .nav-list { display: flex; align-items: center; gap: 4px; }
    .nav-list a {
      color: var(--ink); font-size: 14px; font-weight: 500;
      padding: 8px 10px; min-height: 44px; display: inline-flex; align-items: center;
      position: relative;
    }
    .nav-list a:hover { color: var(--primary); }
    .nav-list a.is-active { color: var(--primary); }
    .nav-list a.is-active::after {
      content: ""; position: absolute; left: 10px; right: 10px; bottom: 6px; height: 2px; background: var(--primary);
    }
    .nav-close { display: none; }
    .nav-toggle {
      display: none; width: 44px; height: 44px; border-radius: var(--radius-xs);
      border: 1px solid var(--line); background: var(--surface); position: relative;
    }
    .nav-toggle span, .nav-toggle::before, .nav-toggle::after {
      position: absolute; left: 12px; right: 12px; height: 2px; background: var(--ink); content: "";
    }
    .nav-toggle span { top: 21px; }
    .nav-toggle::before { top: 14px; }
    .nav-toggle::after { bottom: 14px; }
    .nav-toggle[aria-expanded="true"] span { opacity: 0; }
    .nav-toggle[aria-expanded="true"]::before { top: 21px; transform: rotate(45deg); }
    .nav-toggle[aria-expanded="true"]::after { bottom: 21px; transform: rotate(-45deg); }

    .hero { position: relative; background: var(--dark); color: var(--dark-fg); }
    .carousel { position: relative; overflow: hidden; min-height: 640px; }
    .slides { position: relative; min-height: 640px; }
    .slide {
      position: absolute; inset: 0; opacity: 0; visibility: hidden;
      transition: opacity .6s ease, visibility .6s;
    }
    .slide.is-active { opacity: 1; visibility: visible; z-index: 1; position: relative; }
    .slide img {
      width: 100%; height: 640px; object-fit: cover; object-position: center;
    }
    .slide-mask {
      position: absolute; inset: 0;
      background: linear-gradient(90deg, rgba(36,28,24,.82) 0%, rgba(36,28,24,.46) 46%, rgba(36,28,24,.12) 100%);
    }
    .slide-content {
      position: absolute; left: 0; right: 0; bottom: 0; top: 0;
      display: flex; align-items: flex-end; z-index: 2;
      padding-bottom: 120px;
    }
    .slide-copy { max-width: 640px; padding-bottom: 12px; }
    .brand-kicker {
      display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: .12em;
      color: var(--copper); margin-bottom: 12px;
    }
    .slide-copy h1, .slide-copy .slide-title {
      font-size: 46px; line-height: 1.22; font-weight: 700; letter-spacing: -.03em; color: #fff;
    }
    .slide-copy .lead {
      margin-top: 16px; font-size: 16px; line-height: 1.8; color: var(--dark-fg); max-width: 580px;
    }
    .slide-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .carousel-btn {
      position: absolute; top: 46%; z-index: 3; width: 44px; height: 44px;
      border-radius: 8px; background: rgba(36,28,24,.55); color: #fff; border: 1px solid rgba(243,230,216,.3);
    }
    .carousel-btn:hover { background: var(--primary); }
    .carousel-prev { left: 16px; }
    .carousel-next { right: 16px; }
    .carousel-dots {
      position: absolute; left: 50%; bottom: 86px; transform: translateX(-50%);
      display: flex; gap: 8px; z-index: 3;
    }
    .carousel-dots button {
      width: 10px; height: 10px; border-radius: 50%; background: rgba(243,230,216,.4);
    }
    .carousel-dots button.is-active { background: var(--primary); width: 22px; border-radius: 8px; }
    .status-bar {
      position: relative; z-index: 4; margin-top: -56px;
    }
    .status-grid {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
      background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
      box-shadow: var(--shadow); padding: 16px 8px;
    }
    .status-item { display: flex; align-items: center; gap: 12px; padding: 8px 16px; }
    .status-ico {
      width: 40px; height: 40px; border-radius: 8px; background: #F3E1D4; color: var(--primary);
      display: grid; place-items: center; flex-shrink: 0; font-weight: 700; font-size: 13px;
    }
    .status-item b { display: block; font-size: 15px; }
    .status-item span { display: block; font-size: 12px; color: var(--ink-soft); }

    .split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
    .split-media { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--line); }
    .split-media img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
    .param-list { margin-top: 24px; display: grid; gap: 10px; }
    .param-row {
      display: grid; grid-template-columns: 92px 1fr auto; gap: 12px; align-items: center;
      background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 10px 14px;
    }
    .param-row dt { font-size: 13px; color: var(--ink-soft); }
    .param-row dd { font-weight: 600; }
    .param-row .bar { height: 6px; background: #EDE4D8; border-radius: 99px; overflow: hidden; }
    .param-row .bar i { display: block; height: 100%; background: var(--primary); border-radius: 99px; }

    .func-layout { display: grid; grid-template-columns: 280px 1fr; gap: 28px; align-items: start; }
    .func-index {
      background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px;
      position: sticky; top: 108px;
    }
    .func-index button {
      width: 100%; text-align: left; padding: 12px 14px; min-height: 48px; border-radius: 8px;
      color: var(--ink); font-weight: 600;
    }
    .func-index button:hover { background: #F3E1D4; }
    .func-index button.is-active { background: var(--primary); color: var(--primary-ink); }
    .func-panel {
      display: none; background: var(--surface); border: 1px solid var(--line);
      border-radius: var(--radius); overflow: hidden; min-height: 360px;
    }
    .func-panel.is-active { display: grid; grid-template-columns: 1.1fr .9fr; }
    .func-copy { padding: 32px; }
    .func-copy h3 { font-size: 22px; margin-bottom: 12px; }
    .func-copy p { color: var(--ink-soft); margin-bottom: .85em; }
    .func-panel img { width: 100%; height: 100%; object-fit: cover; min-height: 360px; }

    .cap-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
    .cap-card {
      background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
      padding: 22px; box-shadow: var(--shadow); transition: transform .2s, box-shadow .2s, border-color .2s;
    }
    .cap-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: #C9A27A; }
    .cap-card:nth-child(1), .cap-card:nth-child(4) {
      grid-column: span 2; background: var(--surface) url("/assets/images/2293fd6e1b672a21.webp") right bottom / 42% auto no-repeat;
    }
    .cap-card:nth-child(4) { background-image: url("/assets/images/334d636377714758.webp"); }
    .cap-ico {
      width: 44px; height: 44px; border-radius: 8px; background: var(--accent-soft); color: var(--accent);
      display: grid; place-items: center; font-weight: 700; margin-bottom: 14px;
    }
    .cap-card h3 { font-size: 18px; margin-bottom: 8px; }
    .cap-card p { color: var(--ink-soft); font-size: 15px; }
    .cap-metric { margin-top: 14px; font-weight: 700; color: var(--primary); font-size: 14px; }

    .scene-layout { display: grid; grid-template-columns: 1fr 1.15fr; gap: 28px; align-items: stretch; }
    .scene-tabs { display: flex; flex-direction: column; gap: 8px; }
    .scene-tab {
      text-align: left; background: var(--surface); border: 1px solid var(--line);
      border-radius: 8px; padding: 14px 16px; min-height: 64px; color: var(--ink);
    }
    .scene-tab:hover { border-color: var(--primary); }
    .scene-tab.is-active { background: var(--dark); color: var(--dark-fg); border-color: var(--dark); }
    .scene-tab strong { display: block; font-size: 16px; }
    .scene-tab span { display: block; font-size: 13px; opacity: .82; margin-top: 2px; }
    .scene-stage {
      position: relative; border-radius: var(--radius); overflow: hidden; min-height: 420px; border: 1px solid var(--line);
    }
    .scene-stage img { width: 100%; height: 100%; object-fit: cover; min-height: 420px; }
    .scene-caption {
      position: absolute; left: 16px; right: 16px; bottom: 16px;
      background: rgba(36,28,24,.82); color: var(--dark-fg); padding: 16px 18px; border-radius: 8px;
    }
    .scene-caption h3 { font-size: 18px; margin-bottom: 6px; }

    .product-grid { display: grid; grid-template-columns: .9fr 1.2fr .9fr; gap: 18px; align-items: stretch; }
    .product-card {
      background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
      overflow: hidden; box-shadow: var(--shadow); display: flex; flex-direction: column;
      transition: transform .2s, box-shadow .2s;
    }
    .product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
    .product-card.is-featured { border-color: var(--primary); box-shadow: 0 12px 32px rgba(184,90,42,.16); }
    .product-card img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
    .product-body { padding: 20px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
    .product-body h3 { font-size: 20px; }
    .spec-list li { font-size: 14px; color: var(--ink-soft); padding: 4px 0 4px 14px; position: relative; }
    .spec-list li::before { content: ""; width: 6px; height: 6px; background: var(--primary); border-radius: 50%; position: absolute; left: 0; top: 12px; }
    .price { font-size: 22px; font-weight: 700; color: var(--primary); font-variant-numeric: tabular-nums; }
    .price small { font-size: 13px; color: var(--ink-soft); font-weight: 500; }

    .demo-stage { display: grid; gap: 16px; }
    .demo-shot { position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
    .demo-shot img { width: 100%; aspect-ratio: 16/7; object-fit: cover; min-height: 280px; }
    .play-btn {
      position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
      width: 68px; height: 68px; border-radius: 50%; background: rgba(255,248,241,.92); color: var(--primary);
      display: grid; place-items: center; border: 2px solid var(--primary);
    }
    .play-btn::after { content: ""; border-style: solid; border-width: 10px 0 10px 16px; border-color: transparent transparent transparent var(--primary); margin-left: 4px; }
    .demo-board {
      display: grid; grid-template-columns: 1.1fr .9fr; gap: 16px;
    }
    .queue, .map-mock {
      background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px;
    }
    .queue h3, .map-mock h3 { font-size: 16px; margin-bottom: 12px; }
    .queue li {
      display: grid; grid-template-columns: 64px 1fr auto; gap: 10px; align-items: center;
      padding: 10px 0; border-bottom: 1px dashed var(--line); font-size: 14px;
    }
    .tag { font-size: 12px; padding: 2px 8px; border-radius: 6px; background: var(--accent-soft); color: var(--accent); }
    .batt { width: 72px; height: 8px; background: #EDE4D8; border-radius: 99px; overflow: hidden; }
    .batt i { display: block; height: 100%; background: var(--accent); }
    .map-mock .zones { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
    .zone { height: 86px; border-radius: 8px; border: 1px dashed var(--line); background: repeating-linear-gradient(45deg, #F4EEE4, #F4EEE4 8px, #EDE4D8 8px, #EDE4D8 16px); display: grid; place-items: center; font-size: 13px; color: var(--ink-soft); }
    .zone.ban { background: #F3E1D4; color: var(--primary); }
    .steps { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; margin-top: 8px; }
    .step {
      background: var(--bg-alt); border-radius: 8px; padding: 14px 12px; min-height: 96px;
    }
    .step b { display: block; color: var(--primary); font-size: 12px; margin-bottom: 6px; }
    .step span { font-size: 14px; font-weight: 600; }

    .dark-band { background: var(--dark); color: var(--dark-fg); padding: 88px 0; position: relative; }
    .dark-band::before {
      content: ""; position: absolute; inset: 0; opacity: .22;
      background: url("/assets/images/9232180dc2b79430.webp") center/cover no-repeat;
    }
    .dark-inner { position: relative; display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; }
    .dark-inner h2 { font-size: 30px; letter-spacing: -.02em; }
    .slice-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 0; }
    .slice { padding: 8px 28px; border-left: 1px solid #5A4638; }
    .slice .k { color: var(--copper); font-size: 13px; letter-spacing: .08em; }
    .slice h3 { font-size: 20px; margin: 8px 0 10px; }
    .slice p { color: #E7D3C0; }

    .case-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
    .case-card {
      display: grid; grid-template-columns: 180px 1fr; gap: 0; background: var(--surface);
      border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; color: inherit;
      box-shadow: var(--shadow); transition: transform .2s, box-shadow .2s;
    }
    .case-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); color: inherit; }
    .case-card img { width: 100%; height: 100%; object-fit: cover; min-height: 150px; }
    .case-body { padding: 18px 20px; }
    .case-body h3 { font-size: 18px; margin: 6px 0 8px; }
    .case-body p { color: var(--ink-soft); font-size: 14px; }
    .kpi { font-weight: 700; color: var(--primary); font-size: 14px; }

    .table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
    table.pkg { width: 100%; border-collapse: collapse; min-width: 760px; font-size: 15px; }
    .pkg th, .pkg td { padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--line); }
    .pkg th { background: #EDE4D8; font-weight: 700; }
    .pkg td:nth-child(3), .pkg th:nth-child(3) { background: #F8E8DC; }
    .pkg th:nth-child(3) { background: var(--primary); color: var(--primary-ink); }
    .pkg tr:last-child td { border-bottom: 0; }
    .pkg .cta-row td { vertical-align: middle; }
    .note { margin-top: 12px; font-size: 13px; color: var(--ink-soft); }

    .story-grid { display: grid; grid-template-columns: 1.35fr 1fr; grid-template-rows: auto auto; gap: 18px; }
    .story { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: grid; }
    .story-main { grid-row: 1 / 3; grid-template-rows: 240px 1fr; }
    .story img { width: 100%; height: 180px; object-fit: cover; }
    .story-main img { height: 240px; }
    .story-body { padding: 20px 22px; }
    .story-body h3 { font-size: 18px; margin-bottom: 8px; }
    .story-body p { color: var(--ink-soft); }
    .who { font-size: 13px; color: var(--primary); font-weight: 600; margin-bottom: 6px; }

    .stats-bar { background: var(--dark); color: var(--dark-fg); padding: 48px 0; }
    .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
    .stat-num { font-size: 40px; font-weight: 700; letter-spacing: -.03em; font-variant-numeric: tabular-nums; color: #E8B48A; line-height: 1.1; }
    .stat-label { margin-top: 8px; font-weight: 600; }
    .stat-note { font-size: 13px; color: #C9B09A; margin-top: 4px; }

    .review-wall { columns: 3; column-gap: 16px; }
    .review {
      break-inside: avoid; margin-bottom: 16px; background: var(--surface);
      border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 18px 16px;
    }
    .review p { font-size: 15px; }
    .review footer { margin-top: 12px; font-size: 13px; color: var(--ink-soft); display: flex; justify-content: space-between; }

    .rep-track { display: flex; gap: 16px; overflow-x: auto; padding-bottom: 8px; scroll-snap-type: x mandatory; }
    .rep-card {
      min-width: 280px; scroll-snap-align: start; background: var(--surface);
      border: 1px solid var(--line); border-radius: var(--radius); padding: 18px;
    }
    .rep-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
    .rep-logo {
      width: 42px; height: 42px; border-radius: 8px; background: var(--bg-alt);
      display: grid; place-items: center; font-weight: 700; color: var(--primary); font-size: 14px;
    }
    .score { height: 6px; background: #EDE4D8; border-radius: 99px; overflow: hidden; margin: 8px 0 12px; }
    .score i { display: block; height: 100%; background: var(--accent); }
    .rep-card p { font-size: 14px; color: var(--ink-soft); }

    .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .news-card {
      background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
      overflow: hidden; color: inherit; box-shadow: var(--shadow); display: flex; flex-direction: column;
    }
    .news-card:hover { color: inherit; transform: translateY(-3px); box-shadow: var(--shadow-hover); }
    .news-card img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
    .news-card .body { padding: 16px 18px 18px; }
    .news-card time { font-size: 12px; color: var(--ink-soft); }
    .news-card h3 { font-size: 17px; margin: 6px 0 8px; line-height: 1.4; }
    .news-card p { font-size: 14px; color: var(--ink-soft); }
    .more-link { display: inline-flex; margin-top: 22px; font-weight: 600; }

    .faq-cta { display: grid; grid-template-columns: 1.05fr .95fr; gap: 28px; align-items: start; }
    .accordion { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--surface); }
    .acc-item + .acc-item { border-top: 1px solid var(--line); }
    .acc-btn {
      width: 100%; text-align: left; padding: 16px 48px 16px 18px; min-height: 56px;
      font-weight: 600; position: relative; color: var(--ink);
    }
    .acc-btn::after {
      content: "+"; position: absolute; right: 18px; top: 50%; transform: translateY(-50%);
      color: var(--primary); font-size: 20px;
    }
    .acc-btn[aria-expanded="true"] { background: var(--bg-alt); }
    .acc-btn[aria-expanded="true"]::after { content: "–"; }
    .acc-panel { display: none; padding: 0 18px 16px; background: var(--bg-alt); color: var(--ink-soft); }
    .acc-panel.is-open { display: block; }
    .apply-card {
      background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
      padding: 24px; box-shadow: var(--shadow);
    }
    .value-list { margin-bottom: 18px; }
    .value-list li { padding: 8px 0 8px 22px; position: relative; }
    .value-list li::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); position: absolute; left: 0; top: 16px; }
    .form-row { margin-bottom: 14px; }
    label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
    input, select {
      width: 100%; min-height: 44px; border: 1px solid var(--line); border-radius: 8px;
      background: #fff; padding: 8px 12px; color: var(--ink);
    }
    input:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(47,111,98,.15); }
    .error { color: var(--danger); font-size: 13px; margin-top: 4px; display: none; }
    .form-row.has-error input, .form-row.has-error select { border-color: var(--danger); }
    .form-row.has-error .error { display: block; }
    .form-success {
      display: none; background: var(--accent-soft); color: var(--accent); border-radius: 8px; padding: 16px;
    }
    .form-success.is-show { display: block; }
    .form-meta { margin-top: 12px; font-size: 13px; color: var(--ink-soft); }
    .form-meta a { color: var(--primary); font-weight: 600; }

    .site-footer { background: var(--dark); color: var(--dark-fg); padding: 64px 0 24px; }
    .footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1.1fr 1fr; gap: 28px; }
    .site-footer h3 { font-size: 16px; margin-bottom: 14px; color: #fff; }
    .site-footer p, .site-footer li, .site-footer a { color: #D9C4B0; font-size: 14px; }
    .site-footer a:hover { color: #8FCBBE; }
    .footer-logo { display: flex; align-items: center; gap: 10px; color: #fff; margin-bottom: 12px; font-weight: 700; }
    .footer-nav a { display: block; padding: 4px 0; min-height: auto; }
    .footer-rule {
      height: 1px; margin: 28px 0 16px;
      background: repeating-linear-gradient(90deg, #5A4638 0 8px, transparent 8px 12px);
      border: 0;
    }
    .copyright { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13px; color: #B89F88; }
    .icp { color: #B89F88; }

    @media (max-width: 1280px) {
      .slide-copy h1, .slide-copy .slide-title { font-size: 40px; }
      .section-head h2, .dark-inner h2 { font-size: 28px; }
    }
    @media (max-width: 1024px) {
      .nav-toggle { display: inline-block; }
      .site-nav {
        position: fixed; inset: 0; z-index: 200; background: var(--bg);
        flex-direction: column; align-items: stretch; justify-content: flex-start;
        padding: 24px; transform: translateX(100%); transition: transform .28s ease;
      }
      .site-nav.is-open { transform: translateX(0); }
      .nav-close {
        display: inline-flex; align-self: flex-end; width: 44px; height: 44px;
        border: 1px solid var(--line); border-radius: 8px; background: var(--surface); font-size: 22px;
      }
      .nav-list { flex-direction: column; align-items: stretch; gap: 4px; margin: 24px 0; }
      .nav-list a { font-size: 18px; border-bottom: 1px solid var(--line); }
      .header-top .mail { display: none; }
      .split, .func-layout, .func-panel.is-active, .scene-layout, .product-grid, .demo-board, .dark-inner, .story-grid, .faq-cta, .footer-grid {
        grid-template-columns: 1fr;
      }
      .cap-grid { grid-template-columns: 1fr 1fr; }
      .cap-card:nth-child(1), .cap-card:nth-child(4) { grid-column: span 1; background-size: 0; }
      .func-index { position: static; display: grid; grid-template-columns: 1fr 1fr; }
      .product-card.is-featured { order: -1; }
      .story-main { grid-row: auto; }
      .stats-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
      .news-grid { grid-template-columns: 1fr 1fr; }
      .review-wall { columns: 2; }
      .steps { grid-template-columns: 1fr 1fr 1fr; }
      .slice-pair { grid-template-columns: 1fr; }
      .slice { border-left: 0; border-top: 1px solid #5A4638; padding: 20px 0; }
      .carousel, .slides, .slide img { min-height: 560px; height: auto; }
      .slide img { height: 560px; }
      .slide-content { padding-bottom: 108px; }
    }
    @media (max-width: 768px) {
      .section, .dark-band { padding: 56px 0; }
      .slide-copy h1, .slide-copy .slide-title { font-size: 34px; }
      .status-grid { grid-template-columns: 1fr 1fr; margin: 0 8px; }
      .header-top-inner { font-size: 12px; }
      .header-top .cities { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
      .case-card { grid-template-columns: 1fr; }
      .case-card img { min-height: 180px; aspect-ratio: 16/10; }
      .func-index { grid-template-columns: 1fr; }
      .news-grid, .cap-grid { grid-template-columns: 1fr; }
      .review-wall { columns: 1; }
      .steps { grid-template-columns: 1fr 1fr; }
      .param-row { grid-template-columns: 1fr; }
      .copyright { flex-direction: column; }
      .slide-actions { flex-direction: column; align-items: stretch; }
      .carousel-dots { bottom: 72px; }
    }
    @media (max-width: 520px) {
      :root { --pad: 16px; }
      .slide-copy h1, .slide-copy .slide-title { font-size: 30px; }
      .status-grid { grid-template-columns: 1fr; }
      .stats-grid { grid-template-columns: 1fr; }
      .carousel, .slides, .slide img { min-height: 520px; }
      .slide img { height: 520px; }
      .header-top .cta-link { display: none; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { animation: none !important; transition: none !important; }
    }