/* roulang page: index */
:root {
      --ink: #1C2128;
      --ink-soft: #2A3139;
      --accent: #C4451C;
      --accent-deep: #9A3412;
      --accent-press: #7A2A0E;
      --steel: #5C6770;
      --pass: #1F7A6C;
      --pass-soft: #E6F4F1;
      --bg: #F2F0EA;
      --bg-alt: #E8E4DB;
      --card: #FFFFFF;
      --dark: #121417;
      --dark-2: #1A1E24;
      --line: #D8D2C8;
      --line-dark: #2C323A;
      --text: #1C2128;
      --muted: #5C6770;
      --white: #FFFFFF;
      --radius: 6px;
      --radius-sm: 4px;
      --shadow: 0 2px 8px rgba(28, 33, 40, 0.12);
      --shadow-hover: 0 6px 16px rgba(28, 33, 40, 0.14);
      --space: 24px;
      --max: 1240px;
      --nav-h: 72px;
      --focus: 0 0 0 3px rgba(196, 69, 28, 0.35);
      --mono: "ui-monospace", "SFMono-Regular", "Menlo", "Consolas", monospace;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 84px; }
    body {
      margin: 0;
      font-family: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      font-weight: 400;
      color: var(--text);
      background: var(--bg);
      line-height: 1.7;
      font-size: 16px;
      overflow-x: hidden;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--accent); text-decoration: none; transition: color .2s ease, opacity .2s ease; }
    a:hover { color: var(--accent-deep); }
    button, input, select, textarea { font-family: inherit; }
    button { cursor: pointer; }
    h1, h2, h3, h4 { margin: 0; letter-spacing: -0.02em; line-height: 1.28; font-weight: 700; color: var(--ink); }
    p { margin: 0 0 1em; }
    ul, ol { margin: 0; padding: 0; }
    table { border-collapse: collapse; width: 100%; }
    :focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
    .skip {
      position: absolute; left: -999px; top: 8px; background: var(--accent); color: #fff;
      padding: 8px 12px; z-index: 10000; border-radius: var(--radius-sm);
    }
    .skip:focus { left: 8px; }
    .container { width: min(100% - 40px, var(--max)); margin: 0 auto; }
    .section { padding: 96px 0; position: relative; }
    .section-head { margin-bottom: 36px; max-width: 760px; }
    .section-head h2 { font-size: 30px; margin-bottom: 12px; }
    .section-head p { color: var(--muted); font-size: 15px; margin: 0; }
    .kicker {
      display: inline-block; font-size: 12px; font-weight: 600; letter-spacing: 0.08em;
      color: var(--accent); margin-bottom: 10px; text-transform: none;
    }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 10px 20px; border-radius: var(--radius);
      border: 1px solid transparent; font-size: 15px; font-weight: 600;
      letter-spacing: 0.01em; transition: background .2s ease, color .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease;
    }
    .btn:active { transform: translateY(0); }
    .btn-primary { background: var(--accent); color: #fff; }
    .btn-primary:hover { background: var(--ink); color: #fff; transform: translateY(-2px); }
    .btn-dark { background: var(--ink); color: #fff; }
    .btn-dark:hover { background: var(--accent); color: #fff; transform: translateY(-2px); }
    .btn-line { background: transparent; color: var(--ink); border-color: var(--steel); }
    .btn-line:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
    .btn-ghost { background: rgba(255,255,255,.08); color: #fff; border-color: rgba(255,255,255,.35); }
    .btn-ghost:hover { background: #fff; color: var(--ink); transform: translateY(-2px); }
    .btn:disabled, .btn.is-disabled { opacity: .5; cursor: not-allowed; transform: none; }
    .badge {
      display: inline-flex; align-items: center; gap: 6px; min-height: 28px;
      padding: 2px 10px; border: 1px solid var(--line); border-radius: 3px;
      font-size: 12px; color: var(--steel); background: #fff; font-weight: 600;
    }
    .badge-pass { color: var(--pass); border-color: #9FCFC6; background: var(--pass-soft); }
    .badge-spec { background: var(--ink); color: #fff; border-color: var(--ink); }
    .tag {
      display: inline-block; padding: 3px 8px; font-size: 12px; color: var(--steel);
      border: 1px solid var(--line); border-radius: 3px; background: var(--bg);
    }
    .site-header { position: relative; z-index: 1000; }
    .toolbar {
      background: var(--ink); color: #D5D0C8; font-size: 13px;
      transition: transform .25s ease, max-height .25s ease, opacity .25s ease;
    }
    .toolbar-inner {
      width: min(100% - 40px, var(--max)); margin: 0 auto;
      display: flex; align-items: center; justify-content: space-between; gap: 16px;
      min-height: 38px;
    }
    .toolbar a { color: #E8E4DB; }
    .toolbar a:hover { color: #fff; }
    .toolbar-left, .toolbar-right { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
    .toolbar-item { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
    .toolbar-item svg { width: 14px; height: 14px; flex: 0 0 auto; }
    .nav-main {
      background: #fff; border-bottom: 1px solid var(--line);
      transition: box-shadow .2s ease, background .2s ease;
    }
    .nav-inner {
      width: min(100% - 40px, var(--max)); margin: 0 auto;
      display: flex; align-items: center; justify-content: space-between; gap: 20px;
      min-height: var(--nav-h);
    }
    body.is-stuck .toolbar { transform: translateY(-100%); max-height: 0; opacity: 0; overflow: hidden; }
    body.is-stuck .nav-main {
      position: sticky; top: 0; z-index: 1001;
      box-shadow: 0 2px 10px rgba(28,33,40,.12);
    }
    .brand {
      display: flex; align-items: center; gap: 10px; color: var(--ink); flex: 0 0 auto;
    }
    .brand:hover { color: var(--ink); opacity: .86; }
    .logo-mark {
      width: 40px; height: 40px; border: 1px solid var(--ink); border-radius: 4px;
      display: grid; place-items: center; color: var(--ink); background: #fff;
    }
    .logo-text { display: flex; flex-direction: column; line-height: 1.15; }
    .logo-text strong { font-size: 17px; font-weight: 700; }
    .logo-text span { font-size: 12px; color: var(--steel); font-weight: 600; }
    .nav-links { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
    .nav-links a {
      color: var(--ink); font-size: 14px; font-weight: 600; padding: 8px 10px; border-radius: 4px;
    }
    .nav-links a:hover, .nav-links a.is-active { color: var(--accent); background: rgba(196,69,28,.08); }
    .nav-cta { display: flex; align-items: center; gap: 10px; }
    .nav-toggle {
      display: none; width: 44px; height: 44px; border: 1px solid var(--line); background: #fff;
      border-radius: 4px; align-items: center; justify-content: center; flex-direction: column; gap: 5px;
    }
    .nav-toggle span { width: 18px; height: 2px; background: var(--ink); display: block; transition: .2s ease; }
    .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
    .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
    .drawer {
      display: none; background: #fff; border-top: 1px solid var(--line);
    }
    .drawer.open { display: block; }
    .drawer-inner { width: min(100% - 40px, var(--max)); margin: 0 auto; padding: 12px 0 24px; }
    .drawer .nav-links { flex-direction: column; align-items: stretch; }
    .drawer .nav-links a { padding: 14px 8px; border-bottom: 1px solid var(--line); }
    .drawer-tools { display: grid; gap: 8px; padding: 16px 8px; color: var(--steel); font-size: 14px; }
    .hero {
      position: relative; min-height: 680px; color: #fff; overflow: hidden; background: var(--dark);
    }
    .slides { position: absolute; inset: 0; }
    .slide {
      position: absolute; inset: 0; opacity: 0; transition: opacity .7s ease;
      background: #121417 center/cover no-repeat;
    }
    .slide.is-on { opacity: 1; }
    .slide::after {
      content: ""; position: absolute; inset: 0;
      background:
        linear-gradient(90deg, rgba(18,20,23,.86) 0%, rgba(18,20,23,.55) 48%, rgba(18,20,23,.42) 100%),
        linear-gradient(180deg, rgba(18,20,23,.2) 0%, rgba(18,20,23,.55) 100%);
    }
    .s1 { background-image: url("/assets/images/a830c022e7a47e31.webp"); }
    .s2 { background-image: url("/assets/images/88811a1680a7626e.webp"); }
    .s3 { background-image: url("/assets/images/5f777d7066fec38a.webp"); }
    .s4 { background-image: url("/assets/images/ded3a2e1a52adfc7.webp"); }
    .hero-layer { position: relative; z-index: 2; width: min(100% - 40px, var(--max)); margin: 0 auto; padding: 56px 0 72px; }
    .hero-grid {
      display: grid; grid-template-columns: 1.15fr .85fr; gap: 36px; align-items: stretch;
    }
    .brand-line { font-size: 13px; font-weight: 700; letter-spacing: .12em; color: #F0C2B0; margin-bottom: 14px; }
    .hero h1 { color: #fff; font-size: 42px; max-width: 16em; margin-bottom: 16px; }
    .hero-lead { color: #E4DFD6; font-size: 15px; line-height: 1.8; margin-bottom: 22px; max-width: 42em; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 22px; }
    .param-row { display: flex; flex-wrap: wrap; gap: 8px; }
    .param-chip {
      font-family: var(--mono); font-size: 12px; color: #F2F0EA;
      border: 1px solid rgba(216,210,200,.35); padding: 6px 10px; border-radius: 3px;
      background: rgba(18,20,23,.35);
    }
    .coupon-wall { display: grid; gap: 12px; align-content: start; }
    .coupon {
      position: relative; background: #F7F4EE; color: var(--ink); border-radius: 6px;
      padding: 18px 18px 16px; box-shadow: var(--shadow);
      border: 1px solid #E2DCD2;
    }
    .coupon::before, .coupon::after {
      content: ""; position: absolute; top: 50%; width: 16px; height: 16px; background: var(--dark);
      border-radius: 50%; transform: translateY(-50%);
    }
    .coupon::before { left: -8px; }
    .coupon::after { right: -8px; }
    .coupon-main { padding: 22px 22px 18px; background: #FFF8F3; border-color: #E8C8B8; }
    .coupon-serial { font-family: var(--mono); font-size: 12px; color: var(--steel); }
    .coupon h3 { font-size: 22px; margin: 6px 0 8px; }
    .coupon p { font-size: 13px; color: var(--muted); margin: 0 0 12px; }
    .coupon-meta { display: flex; justify-content: space-between; gap: 8px; font-size: 12px; color: var(--steel); margin-bottom: 14px; border-top: 1px dashed #D8D2C8; padding-top: 10px; }
    .coupon .btn { width: 100%; }
    .coupon-minis { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }
    .coupon-mini { padding: 12px; min-height: 108px; }
    .coupon-mini h4 { font-size: 14px; margin-bottom: 6px; }
    .coupon-mini p { font-size: 12px; margin: 0; }
    .carousel-ui {
      position: absolute; z-index: 3; left: 0; right: 0; bottom: 18px;
      width: min(100% - 40px, var(--max)); margin: 0 auto;
      display: flex; align-items: center; justify-content: space-between;
    }
    .carousel-btns { display: flex; gap: 8px; }
    .icon-btn {
      width: 44px; height: 44px; border-radius: 4px; border: 1px solid rgba(255,255,255,.35);
      background: rgba(18,20,23,.4); color: #fff; display: grid; place-items: center;
    }
    .icon-btn:hover { background: var(--accent); border-color: var(--accent); }
    .dots { display: flex; gap: 8px; }
    .dot {
      width: 28px; height: 4px; border: 0; background: rgba(255,255,255,.35); border-radius: 2px; padding: 0;
    }
    .dot.is-on { background: var(--accent); }
    .frame {
      position: relative; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
      box-shadow: var(--shadow); overflow: hidden;
    }
    .frame-media { position: relative; overflow: hidden; background: #E8E4DB; aspect-ratio: 16/10; }
    .frame-media img { width: 100%; height: 100%; object-fit: cover; }
    .crosshair::before, .crosshair::after {
      content: ""; position: absolute; width: 12px; height: 12px; border-color: var(--accent); border-style: solid; z-index: 2; pointer-events: none;
    }
    .crosshair::before { top: 8px; left: 8px; border-width: 1px 0 0 1px; }
    .crosshair::after { bottom: 8px; right: 8px; border-width: 0 1px 1px 0; }
    .img-fallback { background:
      linear-gradient(#d8d2c8 1px, transparent 1px) 0 0/20px 20px,
      linear-gradient(90deg, #d8d2c8 1px, transparent 1px) 0 0/20px 20px, #ece8e0;
      min-height: 160px; display: grid; place-items: center;
    }
    #metrics { background: var(--bg); padding-top: 72px; }
    #metrics::before {
      content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .35;
      background-image:
        linear-gradient(rgba(92,103,112,.12) 1px, transparent 1px),
        linear-gradient(90deg, rgba(92,103,112,.12) 1px, transparent 1px);
      background-size: 28px 28px;
    }
    .metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; position: relative; }
    .metric-card {
      background: #fff; border: 1px solid var(--line); border-radius: 4px; padding: 22px 20px 18px;
      box-shadow: var(--shadow);
    }
    .metric-card .num { font-family: var(--mono); font-size: 40px; font-weight: 700; color: var(--accent); letter-spacing: -0.04em; line-height: 1; }
    .metric-card .unit { font-size: 13px; color: var(--steel); margin-left: 4px; font-weight: 600; }
    .metric-card h3 { font-size: 15px; margin: 10px 0 8px; font-weight: 700; }
    .metric-card p { font-size: 13px; color: var(--muted); margin: 0; }
    .bar { height: 4px; background: #E6E0D6; border-radius: 2px; margin-top: 14px; overflow: hidden; }
    .bar > i { display: block; height: 100%; background: var(--accent); width: 0; transition: width 1.1s ease; }
    .split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; }
    .prose p { color: var(--muted); font-size: 15px; }
    .spec-list { list-style: none; display: grid; gap: 10px; margin: 18px 0; }
    .spec-list li {
      display: grid; grid-template-columns: 140px 1fr; gap: 12px; padding: 10px 12px;
      background: #fff; border: 1px solid var(--line); border-radius: 4px; font-size: 14px;
    }
    .spec-list b { color: var(--ink); font-weight: 600; }
    .spec-badges { display: flex; flex-wrap: wrap; gap: 8px; }
    .scene-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; grid-template-rows: 1fr 1fr; gap: 14px; }
    .scene-card {
      position: relative; min-height: 170px; padding: 22px; color: #fff; overflow: hidden;
      border-radius: var(--radius); display: flex; flex-direction: column; justify-content: flex-end;
      background: var(--ink) center/cover no-repeat; border: 1px solid var(--ink);
    }
    .scene-card:nth-child(1) { grid-row: 1 / span 2; min-height: 360px; background-image: linear-gradient(180deg, rgba(18,20,23,.15), rgba(18,20,23,.78)), url("/assets/images/cb939afbb4d9453a.webp"); }
    .scene-card:nth-child(2) { background-image: linear-gradient(180deg, rgba(18,20,23,.1), rgba(18,20,23,.78)), url("/assets/images/98fa572cea9f82aa.webp"); }
    .scene-card:nth-child(3) { background-image: linear-gradient(180deg, rgba(18,20,23,.1), rgba(18,20,23,.78)), url("/assets/images/ac938f492940e4f6.webp"); }
    .scene-card:nth-child(4) { background-image: linear-gradient(180deg, rgba(18,20,23,.1), rgba(18,20,23,.78)), url("/assets/images/c1403ab7395a19ad.webp"); }
    .scene-card h3 { color: #fff; font-size: 20px; margin-bottom: 8px; }
    .scene-card p { color: #E4DFD6; font-size: 13px; margin: 0 0 12px; }
    .scene-card .btn { align-self: flex-start; }
    .matrix-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .matrix-card {
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 20px 18px;
      box-shadow: var(--shadow); transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
      border-bottom: 2px solid transparent;
    }
    .matrix-card:hover { transform: translateY(-2px); border-bottom-color: var(--accent); box-shadow: var(--shadow-hover); }
    .ico {
      width: 40px; height: 40px; border: 1px solid var(--ink); border-radius: 4px;
      display: grid; place-items: center; margin-bottom: 14px; color: var(--ink);
    }
    .matrix-card h3 { font-size: 18px; margin-bottom: 10px; }
    .matrix-card ul { list-style: none; display: grid; gap: 6px; }
    .matrix-card li { font-size: 13px; color: var(--muted); padding-left: 14px; position: relative; }
    .matrix-card li::before { content: ""; position: absolute; left: 0; top: 8px; width: 6px; height: 6px; background: var(--accent); }
    .certs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
    .cert-card {
      background: var(--ink); color: #E8E4DB; padding: 22px 18px; border-radius: 4px;
      border-top: 2px solid var(--accent); min-height: 150px;
    }
    .cert-card h3 { color: #fff; font-size: 16px; margin-bottom: 8px; }
    .cert-card p { font-size: 13px; margin: 0; color: #C9C3B8; }
    .product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .product-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; display: flex; flex-direction: column; }
    .product-card .body { padding: 18px 18px 20px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
    .product-card h3 { font-size: 18px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
    .pn { font-family: var(--mono); font-size: 12px; color: var(--accent-deep); font-weight: 700; }
    .plist { list-style: none; display: grid; gap: 6px; font-size: 13px; color: var(--muted); }
    .plist li { display: flex; justify-content: space-between; gap: 8px; border-bottom: 1px dashed var(--line); padding-bottom: 4px; }
    .plist span { color: var(--ink); font-weight: 600; }
    .compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--line); background: #fff; }
    .compare-col { padding: 0; }
    .compare-col h3 { padding: 16px 20px; font-size: 16px; background: var(--bg-alt); border-bottom: 1px solid var(--line); }
    .compare-col:last-child h3 { background: var(--ink); color: #fff; }
    .table-wrap { overflow-x: auto; }
    table.cmp { min-width: 520px; font-size: 14px; }
    table.cmp th, table.cmp td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
    table.cmp thead th { background: var(--ink); color: #fff; font-weight: 600; }
    table.cmp tbody tr:nth-child(even) { background: #F7F4EE; }
    table.cmp td.em { color: var(--accent-deep); font-weight: 700; }
    .ok { color: var(--pass); font-weight: 700; }
    .warn { color: var(--steel); }
    .cases { background: var(--dark); color: #E4DFD6; padding: 96px 0; border-top: 1px solid var(--accent); }
    .cases h2, .cases h3 { color: #fff; }
    .cases .section-head p { color: #C9C3B8; }
    .case-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 32px; align-items: center; }
    .process { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 22px; }
    .process li {
      list-style: none; border: 1px solid var(--line-dark); padding: 14px; border-radius: 4px; background: var(--dark-2);
    }
    .process b { display: block; color: var(--accent); font-size: 12px; margin-bottom: 6px; letter-spacing: .08em; }
    .case-points { display: grid; gap: 12px; }
    .case-points article { border-left: 2px solid var(--accent); padding: 10px 0 10px 14px; }
    .case-points h3 { font-size: 16px; margin-bottom: 6px; }
    .case-points p { margin: 0; font-size: 14px; color: #C9C3B8; }
    .timeline {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; position: relative;
    }
    .timeline::before {
      content: ""; position: absolute; left: 0; right: 0; top: 18px; height: 1px; background: var(--line);
    }
    .tl-item { padding: 0 14px 0 0; position: relative; }
    .tl-item i {
      width: 12px; height: 12px; background: var(--accent); display: block; border-radius: 50%;
      position: relative; z-index: 1; margin-bottom: 16px; border: 2px solid #fff; box-shadow: 0 0 0 1px var(--accent);
    }
    .tl-item h3 { font-size: 16px; margin-bottom: 8px; }
    .tl-item p { font-size: 13px; color: var(--muted); margin: 0; }
    .stories { display: grid; gap: 28px; }
    .story { display: grid; grid-template-columns: .9fr 1.1fr; gap: 28px; align-items: center; background: #fff; border: 1px solid var(--line); padding: 16px; border-radius: var(--radius); }
    .story.reverse { grid-template-columns: 1.1fr .9fr; }
    .story.reverse .media { order: 2; }
    .story h3 { font-size: 22px; margin-bottom: 10px; }
    .story p { color: var(--muted); font-size: 15px; }
    .stats {
      background: var(--ink); color: #fff; padding: 36px 0;
      background-image: linear-gradient(90deg, rgba(18,20,23,.82), rgba(28,33,40,.72)), url("/assets/images/98fa572cea9f82aa.webp");
      background-size: cover; background-position: center;
    }
    .stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
    .stat-item { text-align: left; padding: 8px 12px; border-left: 2px solid var(--accent); }
    .stat-item .num { font-family: var(--mono); font-size: 34px; font-weight: 700; color: #fff; }
    .stat-item .unit { font-size: 13px; color: #C9C3B8; margin-left: 4px; }
    .stat-item p { margin: 6px 0 0; color: #D5D0C8; font-size: 13px; }
    .review-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
    .review-card {
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 18px;
      box-shadow: var(--shadow); border-left: 3px solid var(--ink);
    }
    .stars { color: var(--accent); letter-spacing: 2px; font-size: 13px; margin-bottom: 8px; }
    .review-card p { font-size: 14px; color: var(--ink-soft); margin-bottom: 14px; }
    .who { font-size: 12px; color: var(--steel); font-weight: 600; }
    .news-layout { display: grid; grid-template-columns: 1.15fr .85fr; gap: 20px; }
    .news-feature { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
    .news-feature .body { padding: 18px; }
    .news-feature h3 { font-size: 20px; margin: 8px 0 10px; }
    .news-list { display: grid; gap: 12px; }
    .news-item { display: grid; grid-template-columns: 96px 1fr; gap: 12px; background: #fff; border: 1px solid var(--line); padding: 10px; border-radius: 4px; }
    .news-item h3 { font-size: 15px; margin-bottom: 6px; }
    .news-item p { font-size: 13px; color: var(--muted); margin: 0; }
    .date { font-size: 12px; color: var(--steel); font-family: var(--mono); }
    .more-link { display: inline-flex; margin-top: 16px; font-weight: 700; color: var(--ink); }
    .more-link:hover { color: var(--accent); }
    .g-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
    .g-card { background: #fff; border: 1px solid var(--line); padding: 20px; border-radius: var(--radius); }
    .g-card h3 { font-size: 16px; margin: 10px 0; }
    .g-card ul { list-style: none; display: grid; gap: 6px; }
    .g-card li { font-size: 13px; color: var(--muted); padding-left: 18px; position: relative; }
    .g-card li::before { content: "合格"; position: absolute; left: 0; top: 1px; font-size: 10px; color: var(--pass); font-weight: 700; width: 0; overflow: visible; }
    .g-card li { padding-left: 36px; }
    .chips { display: flex; flex-wrap: wrap; gap: 10px; }
    .chip {
      min-height: 44px; padding: 8px 14px; border: 1px solid var(--line); background: #fff;
      border-radius: 4px; font-size: 14px; font-weight: 600; color: var(--ink);
    }
    .chip:hover, .chip.is-on { border-color: var(--accent); color: var(--accent); background: #FFF6F2; }
    .chip-answer {
      margin-top: 16px; background: #fff; border: 1px solid var(--line); padding: 16px 18px; border-radius: 4px;
      display: none; color: var(--muted); font-size: 14px;
    }
    .chip-answer.show { display: block; }
    .close-pair { display: grid; grid-template-columns: .95fr 1.05fr; gap: 28px; align-items: start; }
    .faq-list { display: grid; gap: 8px; }
    .faq-item { background: #fff; border: 1px solid var(--line); border-radius: 4px; overflow: hidden; }
    .faq-q {
      width: 100%; min-height: 48px; text-align: left; background: #fff; border: 0;
      padding: 12px 44px 12px 16px; font-size: 15px; font-weight: 700; color: var(--ink); position: relative;
    }
    .faq-q::after { content: "+"; position: absolute; right: 16px; top: 50%; transform: translateY(-50%); color: var(--accent); font-size: 18px; }
    .faq-item.open .faq-q { background: #F7F4EE; }
    .faq-item.open .faq-q::after { content: "–"; }
    .faq-a { display: none; padding: 0 16px 16px; color: var(--muted); font-size: 14px; background: #F7F4EE; }
    .faq-item.open .faq-a { display: block; }
    .form-card { background: #fff; border: 1px solid var(--line); padding: 24px; border-radius: var(--radius); box-shadow: var(--shadow); }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .field { display: flex; flex-direction: column; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    label { font-size: 13px; font-weight: 700; color: var(--ink); }
    input, select, textarea {
      min-height: 44px; border: 1px solid var(--steel); border-radius: 4px; padding: 8px 12px;
      background: #fff; color: var(--ink); font-size: 14px;
    }
    textarea { min-height: 110px; resize: vertical; }
    input:focus, select:focus, textarea:focus { border-color: var(--accent); outline: none; box-shadow: var(--focus); }
    .err { color: var(--accent-deep); font-size: 12px; min-height: 16px; }
    .side-box { background: var(--ink); color: #E4DFD6; padding: 22px; border-radius: var(--radius); }
    .side-box h3 { color: #fff; margin-bottom: 12px; }
    .side-box p { margin: 0 0 10px; font-size: 14px; }
    .side-box a { color: #fff; font-weight: 700; }
    .cta-strip {
      margin-top: 18px; display: flex; flex-wrap: wrap; gap: 12px; align-items: center;
      background: var(--bg-alt); border: 1px solid var(--line); padding: 14px 16px; border-radius: 4px;
    }
    .form-ok { display: none; background: var(--pass-soft); color: var(--pass); border: 1px solid #9FCFC6; padding: 10px 12px; border-radius: 4px; margin-bottom: 12px; font-weight: 700; }
    .site-footer { background: var(--ink); color: #C9C3B8; padding: 56px 0 24px; }
    .footer-grid { display: grid; grid-template-columns: 1.3fr .9fr 1fr 1fr; gap: 28px; margin-bottom: 28px; }
    .site-footer h3 { color: #fff; font-size: 16px; margin-bottom: 12px; }
    .site-footer a { color: #D5D0C8; }
    .site-footer a:hover { color: var(--accent); }
    .foot-links, .foot-contact { list-style: none; display: grid; gap: 8px; font-size: 14px; }
    .copy {
      border-top: 1px solid #2C323A; padding-top: 16px; font-size: 13px;
      display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
    }
    .beian { color: #A8A296; }
    .toast {
      position: fixed; right: 16px; bottom: 16px; z-index: 2000; background: var(--ink); color: #fff;
      padding: 12px 16px; border-left: 3px solid var(--accent); border-radius: 4px; display: none;
      box-shadow: var(--shadow-hover);
    }
    .toast.show { display: block; }
    @media (max-width: 1280px) {
      .hero h1 { font-size: 36px; }
      .metric-card .num { font-size: 34px; }
    }
    @media (max-width: 1024px) {
      .section { padding: 72px 0; }
      .hero-grid, .split, .case-grid, .news-layout, .close-pair, .footer-grid { grid-template-columns: 1fr; }
      .story, .story.reverse { grid-template-columns: 1fr; }
      .story.reverse .media { order: 0; }
      .nav-links, .nav-cta .btn { display: none; }
      .nav-toggle { display: inline-flex; }
      .scene-grid { grid-template-columns: 1fr 1fr; }
      .scene-card:nth-child(1) { grid-row: auto; min-height: 220px; }
      .matrix-grid, .certs, .g-grid, .review-grid { grid-template-columns: 1fr 1fr; }
      .metric-grid, .stats-row, .coupon-minis { grid-template-columns: 1fr 1fr; }
      .product-grid { grid-template-columns: 1fr; }
      .timeline { grid-template-columns: 1fr 1fr; }
      .timeline::before { display: none; }
    }
    @media (max-width: 768px) {
      .container, .toolbar-inner, .nav-inner, .hero-layer, .carousel-ui { width: min(100% - 28px, var(--max)); }
      .section { padding: 52px 0; }
      .section-head h2, .hero h1 { font-size: 28px; }
      .toolbar-right { display: none; }
      .hero { min-height: auto; }
      .hero-layer { padding: 36px 0 80px; }
      .coupon-minis { grid-template-columns: 1fr; }
      .metric-grid { grid-template-columns: 1fr 1fr; }
      .scene-grid, .matrix-grid, .certs, .g-grid, .review-grid, .form-grid, .process { grid-template-columns: 1fr; }
      .spec-list li { grid-template-columns: 1fr; gap: 4px; }
      .news-item { grid-template-columns: 1fr; }
      .timeline { grid-template-columns: 1fr; border-left: 1px solid var(--line); margin-left: 6px; }
      .tl-item { padding: 0 0 20px 18px; }
      .copy { flex-direction: column; }
    }
    @media (max-width: 520px) {
      .metric-grid, .stats-row { grid-template-columns: 1fr; }
      .hero-actions { flex-direction: column; }
      .hero-actions .btn, .cta-strip .btn { width: 100%; }
      .param-chip { font-size: 11px; }
    }
    @media (max-width: 375px) {
      body { font-size: 15px; }
      .logo-text strong { font-size: 15px; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      * { transition: none !important; animation: none !important; }
    }