/* roulang page: index */
:root {
      --bg: #F3F6FA;
      --surface: #FFFFFF;
      --primary: #2F6FA8;
      --primary-ink: #1E4C78;
      --ink: #1C2C3A;
      --muted: #5B6B7C;
      --line: #D5E1EE;
      --accent: #B8956A;
      --dark: #1F3D57;
      --paper: #F7F1E8;
      --shadow: 0 10px 30px rgba(31, 61, 87, 0.08);
      --shadow-hover: 0 16px 40px rgba(31, 61, 87, 0.12);
      --radius: 8px;
      --radius-btn: 5px;
      --header-h: 104px;
      --container: 1200px;
      --ease: 180ms ease;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: "Noto Sans SC", "PingFang SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
      font-size: 16px;
      line-height: 1.75;
      color: var(--ink);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
    }
    body.nav-open { overflow: hidden; }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--primary); text-decoration: none; transition: color var(--ease); }
    a:hover { color: var(--primary-ink); }
    button, input, select, textarea { font-family: inherit; font-size: inherit; }
    button { cursor: pointer; border: 0; background: none; }
    h1, h2, h3, h4 {
      font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
      font-weight: 700;
      color: var(--ink);
      line-height: 1.28;
      margin: 0 0 16px;
    }
    h1 { font-size: clamp(28px, 4.2vw, 46px); }
    h2 { font-size: clamp(22px, 2.6vw, 32px); }
    h3 { font-size: clamp(18px, 1.8vw, 22px); }
    p { margin: 0 0 16px; color: var(--ink); }
    ul { margin: 0; padding: 0; list-style: none; }
    :focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 3px;
    }
    .container {
      width: min(100% - 40px, var(--container));
      margin: 0 auto;
    }
    .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;
    }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 46px; padding: 0 22px;
      border-radius: var(--radius-btn);
      font-weight: 600; letter-spacing: 0.02em;
      transition: background var(--ease), color var(--ease), transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }
    .btn-primary {
      background: var(--primary); color: #fff; box-shadow: 0 8px 18px rgba(47, 111, 168, 0.22);
    }
    .btn-primary:hover, .btn-primary:active {
      background: var(--primary-ink); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-hover);
    }
    .btn-ghost {
      background: transparent; color: var(--primary-ink);
      border: 1.5px solid var(--primary);
    }
    .btn-ghost:hover { background: rgba(47, 111, 168, 0.08); color: var(--primary-ink); transform: translateY(-1px); }
    .btn-light {
      background: #fff; color: var(--primary-ink); border: 1.5px solid rgba(255,255,255,.4);
    }
    .btn-light:hover { background: var(--paper); color: var(--primary-ink); }
    .btn-block { width: 100%; }
    .badge {
      display: inline-flex; align-items: center; gap: 6px;
      padding: 4px 10px; border-radius: 3px;
      border: 1px solid var(--accent);
      color: var(--accent); font-size: 12px; letter-spacing: 0.08em;
      background: rgba(184, 149, 106, 0.08);
    }
    .kicker {
      display: inline-block; margin-bottom: 10px;
      color: var(--primary); font-size: 13px; font-weight: 600; letter-spacing: 0.12em;
    }
    .lead { color: var(--muted); font-size: 16px; max-width: 760px; }
    .section { padding: 100px 0; position: relative; }
    .section-tight { padding: 72px 0; }
    .section h2 { margin-bottom: 14px; }
    .section-head { margin-bottom: 48px; max-width: 780px; }
    .section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
    .seal {
      position: relative;
    }
    .seal::before, .seal::after {
      content: ""; position: absolute; width: 14px; height: 14px; border-color: var(--accent); opacity: .55; pointer-events: none;
    }
    .seal::before { top: 10px; left: 10px; border-top: 1.5px solid; border-left: 1.5px solid; }
    .seal::after { bottom: 10px; right: 10px; border-bottom: 1.5px solid; border-right: 1.5px solid; }

    .site-header {
      position: sticky; top: 0; z-index: 80; background: var(--surface);
    }
    .topbar {
      background: rgba(47, 111, 168, 0.07);
      border-bottom: 1px solid var(--line);
      font-size: 13px; color: var(--muted);
    }
    .topbar-inner {
      display: flex; align-items: center; justify-content: space-between; gap: 16px;
      min-height: 38px;
    }
    .topbar-left { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 18px; }
    .topbar a { color: var(--primary-ink); }
    .topbar a:hover { text-decoration: underline; }
    .nav-main {
      display: flex; align-items: center; justify-content: space-between; gap: 20px;
      min-height: 66px;
    }
    .site-header.is-stuck .nav-wrap {
      border-bottom: 1px solid var(--line);
      box-shadow: 0 8px 24px rgba(31, 61, 87, 0.06);
    }
    .logo {
      display: flex; align-items: center; gap: 10px; color: var(--ink); flex-shrink: 0;
    }
    .logo:hover { color: var(--primary-ink); }
    .logo-mark {
      width: 36px; height: 36px; border: 1.5px solid var(--primary);
      display: grid; place-items: center; border-radius: 4px;
      background: #fff;
    }
    .logo-text { display: flex; flex-direction: column; line-height: 1.15; }
    .logo-text strong {
      font-family: "Noto Serif SC", "Songti SC", serif;
      font-size: 17px; font-weight: 700;
    }
    .logo-text span { font-size: 11px; color: var(--muted); letter-spacing: 0.18em; }
    .nav-links { display: flex; align-items: center; gap: 4px 22px; }
    .nav-links a {
      color: var(--ink); font-size: 15px; font-weight: 500; padding: 8px 0; position: relative;
    }
    .nav-links a::after {
      content: ""; position: absolute; left: 0; right: 0; bottom: 2px; height: 1.5px;
      background: var(--primary); transform: scaleX(0); transform-origin: left; transition: transform var(--ease);
    }
    .nav-links a:hover, .nav-links a.is-active { color: var(--primary-ink); }
    .nav-links a:hover::after, .nav-links a.is-active::after { transform: scaleX(1); }
    .nav-cta { display: flex; align-items: center; gap: 12px; }
    .menu-toggle {
      display: none; width: 44px; height: 44px; border-radius: 6px;
      border: 1px solid var(--line); align-items: center; justify-content: center; flex-direction: column; gap: 5px;
    }
    .menu-toggle span { display: block; width: 18px; height: 1.5px; background: var(--ink); transition: transform var(--ease), opacity var(--ease); }
    body.nav-open .menu-toggle span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
    body.nav-open .menu-toggle span:nth-child(2) { opacity: 0; }
    body.nav-open .menu-toggle span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
    .drawer {
      position: fixed; inset: 104px 0 0 auto; width: min(86vw, 360px);
      background: #fff; box-shadow: var(--shadow-hover);
      transform: translateX(110%); transition: transform 220ms ease;
      z-index: 90; padding: 24px; overflow: auto;
    }
    body.nav-open .drawer { transform: translateX(0); }
    .drawer a {
      display: flex; align-items: center; min-height: 48px;
      border-bottom: 1px solid var(--line); color: var(--ink); font-size: 16px;
    }
    .drawer-actions { display: grid; gap: 10px; margin-top: 20px; }
    .drawer-backdrop {
      display: none; position: fixed; inset: 104px 0 0; background: rgba(28,44,58,.28); z-index: 85;
    }
    body.nav-open .drawer-backdrop { display: block; }

    .hero { position: relative; min-height: 78vh; background: #d9e3ee; overflow: hidden; }
    .hero-track { position: relative; min-height: 78vh; }
    .hero-slide {
      position: absolute; inset: 0; opacity: 0; visibility: hidden;
      transition: opacity 520ms ease, visibility 520ms ease;
    }
    .hero-slide.is-active { opacity: 1; visibility: visible; z-index: 1; }
    .hero-slide img {
      width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0;
    }
    .hero-mask {
      position: absolute; inset: 0;
      background: linear-gradient(90deg, rgba(243,246,250,0.9) 0%, rgba(243,246,250,0.62) 46%, rgba(47,111,168,0.16) 100%);
    }
    .hero-copy {
      position: relative; z-index: 2;
      min-height: 78vh; display: flex; align-items: center;
      padding: 72px 0 88px;
    }
    .hero-copy-inner { max-width: 680px; }
    .hero-copy p { font-size: 17px; color: var(--ink); max-width: 640px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .hero-nav {
      position: absolute; z-index: 3; left: 0; right: 0; bottom: 28px;
      display: flex; align-items: center; justify-content: space-between;
      width: min(100% - 40px, var(--container)); margin: 0 auto;
    }
    .hero-arrows { display: flex; gap: 8px; }
    .hero-btn {
      width: 44px; height: 44px; border-radius: 4px;
      border: 1px solid var(--line); background: rgba(255,255,255,.92);
      color: var(--primary-ink); display: grid; place-items: center;
    }
    .hero-btn:hover { background: #fff; box-shadow: var(--shadow); }
    .hero-dots { display: flex; gap: 8px; }
    .hero-dots button {
      width: 28px; height: 4px; border-radius: 2px; background: rgba(30,76,120,.25);
    }
    .hero-dots button.is-active { background: var(--primary); }

    .points { background: var(--surface); padding: 0; }
    .points-row {
      display: grid; grid-template-columns: repeat(3, 1fr);
      border-bottom: 1px solid var(--line);
    }
    .point {
      padding: 48px 36px 40px; border-right: 1px solid var(--line);
    }
    .point:last-child { border-right: 0; }
    .point-num {
      font-family: "Noto Serif SC", serif; font-size: 13px; letter-spacing: 0.2em;
      color: var(--accent); margin-bottom: 18px;
    }
    .point svg { width: 26px; height: 26px; stroke: var(--primary); fill: none; stroke-width: 1.6; margin-bottom: 16px; }
    .point h3 { font-size: 20px; margin-bottom: 10px; }
    .point p { margin: 0; color: var(--muted); }

    .intro { background: var(--bg); }
    .intro-grid {
      display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; align-items: center;
    }
    .intro-figure {
      position: relative; margin-top: 36px;
    }
    .intro-figure img {
      width: 100%; height: 460px; object-fit: cover; border-radius: 10px;
      box-shadow: var(--shadow); border: 1px solid var(--line);
    }
    .intro-note {
      position: absolute; left: -24px; bottom: 28px; width: 70%;
      background: #fff; padding: 18px 20px; border-radius: 8px;
      box-shadow: var(--shadow); border: 1px solid var(--line);
      font-size: 14px; color: var(--muted);
    }
    .fact-list { margin-top: 24px; display: grid; gap: 12px; }
    .fact-list li {
      display: grid; grid-template-columns: 88px 1fr; gap: 12px;
      padding: 12px 0; border-top: 1px solid var(--line); font-size: 15px;
    }
    .fact-list strong { color: var(--primary-ink); font-weight: 600; }

    .scenes { background: var(--surface); }
    .scene-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
    .scene-tab {
      min-height: 44px; padding: 0 16px; border-radius: 4px;
      border: 1px solid var(--line); background: #fff; color: var(--muted);
    }
    .scene-tab.is-active, .scene-tab:hover {
      border-color: var(--primary); color: var(--primary-ink); background: rgba(47,111,168,.06);
    }
    .scene-stage {
      display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 36px; align-items: stretch;
    }
    .scene-visual {
      position: relative; border-radius: 10px; overflow: hidden; min-height: 420px; border: 1px solid var(--line);
    }
    .scene-visual img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
    .scene-caption {
      position: absolute; left: 16px; right: 16px; bottom: 16px;
      background: rgba(255,255,255,.92); padding: 14px 16px; border-radius: 6px;
    }
    .scene-caption strong { display: block; font-family: "Noto Serif SC", serif; }
    .steps { display: grid; gap: 0; background: var(--bg); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
    .step {
      padding: 22px 24px; border-bottom: 1px solid var(--line);
    }
    .step:last-child { border-bottom: 0; }
    .step-index {
      font-size: 12px; letter-spacing: 0.16em; color: var(--accent); margin-bottom: 6px;
    }
    .step h3 { margin-bottom: 6px; }
    .step p { margin: 0; color: var(--muted); font-size: 15px; }
    .io { display: flex; gap: 16px; margin-top: 8px; font-size: 13px; color: var(--primary-ink); }

    .adv { background: var(--bg); }
    .adv-grid {
      display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
    }
    .adv-grid article:nth-child(4),
    .adv-grid article:nth-child(5),
    .adv-grid article:nth-child(6) { transform: translateY(18px); }
    .adv-card {
      background: #fff; border: 1px solid var(--line); border-radius: 10px;
      padding: 28px 24px 26px; box-shadow: var(--shadow);
      transition: transform var(--ease), box-shadow var(--ease);
    }
    .adv-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
    .adv-card svg { width: 26px; height: 26px; stroke: var(--primary); fill: none; stroke-width: 1.6; margin-bottom: 16px; }
    .adv-card p { margin: 0; color: var(--muted); font-size: 15px; }

    .services { background: var(--surface); }
    .service-grid {
      display: grid; grid-template-columns: 1.35fr 1fr; gap: 22px;
    }
    .service-feature {
      position: relative; min-height: 460px; border-radius: 10px; overflow: hidden;
      border: 1px solid var(--line); box-shadow: var(--shadow);
    }
    .service-feature img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
    .service-feature .body {
      position: absolute; inset: auto 0 0; padding: 28px;
      background: linear-gradient(180deg, rgba(31,61,87,0) 0%, rgba(31,61,87,.88) 70%);
      color: #fff;
    }
    .service-feature h3, .service-feature p { color: #fff; }
    .service-stack { display: grid; gap: 22px; }
    .service-mini {
      background: #fff; border: 1px solid var(--line); border-radius: 10px;
      box-shadow: var(--shadow); overflow: hidden; display: grid; grid-template-columns: 148px 1fr;
      transition: transform var(--ease), box-shadow var(--ease);
    }
    .service-mini:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
    .service-mini img { width: 148px; height: 100%; object-fit: cover; }
    .service-mini .body { padding: 20px 20px 18px; }
    .price {
      display: inline-block; margin: 8px 0 12px; color: var(--accent); font-size: 13px; letter-spacing: 0.04em;
    }

    .process { background: var(--bg); }
    .timeline {
      display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; position: relative;
    }
    .timeline::before {
      content: ""; position: absolute; left: 6%; right: 6%; top: 27px;
      height: 1px; background: var(--line);
    }
    .tl {
      padding: 0 14px; position: relative;
    }
    .tl-dot {
      width: 14px; height: 14px; border-radius: 50%;
      background: var(--primary); border: 3px solid #fff; box-shadow: 0 0 0 1px var(--primary);
      margin-bottom: 22px; position: relative; z-index: 1;
    }
    .tl h3 { font-size: 18px; }
    .tl p { color: var(--muted); font-size: 14px; margin: 0; }
    .tl .io { display: block; margin-top: 10px; }

    .cases {
      background: var(--dark); color: #E8EEF4; padding: 100px 0;
      position: relative; overflow: hidden;
    }
    .cases::before {
      content: ""; position: absolute; inset: 0;
      background: url("/assets/images/a9e44d0b3b8ef4e8.webp") center/cover no-repeat;
      opacity: .16;
    }
    .cases .container { position: relative; z-index: 1; }
    .cases h2, .cases h3 { color: #F4F7FB; }
    .cases-grid { display: grid; grid-template-columns: 0.72fr 1.28fr; gap: 48px; align-items: start; }
    .case-hero-num {
      font-family: "Noto Serif SC", serif; font-size: clamp(56px, 8vw, 92px); line-height: .9;
      color: var(--accent); margin: 8px 0 18px;
    }
    .case-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
    .case-tags span {
      border: 1px solid rgba(184,149,106,.5); color: var(--accent);
      padding: 4px 10px; font-size: 12px; letter-spacing: 0.08em;
    }
    .cases .lead { color: rgba(232,238,244,.82); }
    .case-list { display: grid; gap: 16px; }
    .case-item {
      display: grid; grid-template-columns: 140px 1fr; gap: 18px;
      background: rgba(255,255,255,.06); border: 1px solid rgba(213,225,238,.16);
      border-radius: 8px; overflow: hidden;
    }
    .case-item img { width: 140px; height: 100%; object-fit: cover; opacity: .78; }
    .case-item .body { padding: 16px 16px 16px 0; }
    .case-item p { color: rgba(232,238,244,.84); margin: 0; font-size: 15px; }

    .compare { background: var(--surface); }
    .table-wrap { overflow: auto; border: 1px solid var(--line); border-radius: 10px; box-shadow: var(--shadow); }
    table.compare-table { width: 100%; border-collapse: collapse; min-width: 680px; background: #fff; }
    .compare-table th, .compare-table td {
      padding: 16px 20px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top;
    }
    .compare-table thead th {
      background: var(--primary); color: #fff; font-weight: 600; font-size: 15px;
    }
    .compare-table tbody th { width: 22%; color: var(--primary-ink); font-weight: 600; background: #F8FBFE; }
    .compare-table tr:last-child td, .compare-table tr:last-child th { border-bottom: 0; }
    .compare-mobile { display: none; }

    .stories { background: var(--bg); }
    .story {
      display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 40px; align-items: center;
      margin-bottom: 48px;
    }
    .story:last-child { margin-bottom: 0; }
    .story.reverse { grid-template-columns: 1.1fr 0.9fr; }
    .story.reverse .story-media { order: 2; }
    .story img {
      width: 100%; height: 320px; object-fit: cover; border-radius: 10px;
      border: 1px solid var(--line); box-shadow: var(--shadow);
    }
    .story-meta { color: var(--accent); font-size: 13px; letter-spacing: 0.06em; margin-bottom: 8px; }
    .story blockquote {
      margin: 0; padding-left: 14px; border-left: 4px solid var(--accent);
      color: var(--muted);
    }

    .stats {
      background: linear-gradient(180deg, rgba(47,111,168,.08), rgba(47,111,168,.03));
      padding: 56px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
    }
    .stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
    .stat { text-align: left; padding: 8px 12px; }
    .stat-num {
      font-family: "Noto Serif SC", serif; font-size: clamp(32px, 4vw, 42px);
      color: var(--primary-ink); line-height: 1.1;
    }
    .stat-num small { font-size: 16px; margin-left: 4px; color: var(--primary); }
    .stat p { margin: 8px 0 0; color: var(--muted); font-size: 14px; }

    .reviews { background: var(--surface); }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
    .review {
      background: #fff; border: 1px solid var(--line); border-radius: 10px;
      box-shadow: var(--shadow); padding: 24px 24px 22px 22px;
      border-left: 4px solid var(--accent);
    }
    .stars { display: flex; gap: 3px; margin-bottom: 12px; }
    .stars svg { width: 14px; height: 14px; stroke: var(--primary); fill: none; stroke-width: 1.6; }
    .review p { color: var(--muted); min-height: 88px; }
    .review-who { display: flex; align-items: center; gap: 10px; margin-top: 8px; }
    .avatar {
      width: 36px; height: 36px; border-radius: 4px; background: rgba(47,111,168,.12);
      color: var(--primary-ink); display: grid; place-items: center;
      font-family: "Noto Serif SC", serif; font-weight: 700;
    }
    .review-who small { display: block; color: var(--muted); font-size: 12px; }

    .news { background: var(--bg); }
    .news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
    .news-card {
      background: #fff; border: 1px solid var(--line); border-radius: 10px; overflow: hidden;
      box-shadow: var(--shadow); display: flex; flex-direction: column;
      transition: transform var(--ease), box-shadow var(--ease);
    }
    .news-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
    .news-card img { width: 100%; height: 168px; object-fit: cover; }
    .news-card .body { padding: 18px 18px 20px; display: flex; flex-direction: column; flex: 1; }
    .news-card h3 { font-size: 18px; }
    .news-card p { color: var(--muted); font-size: 14px; flex: 1; }
    .news-more { margin-top: 28px; }

    .faq { background: var(--surface); }
    .faq-list { max-width: 880px; }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item button {
      width: 100%; text-align: left; min-height: 64px; padding: 18px 40px 18px 0;
      font-family: "Noto Serif SC", serif; font-size: 18px; color: var(--ink);
      position: relative;
    }
    .faq-item button::after {
      content: ""; position: absolute; right: 6px; top: 50%; width: 12px; height: 12px;
      border-right: 1.5px solid var(--primary); border-bottom: 1.5px solid var(--primary);
      transform: translateY(-70%) rotate(45deg); transition: transform var(--ease);
    }
    .faq-item.is-open button::after { transform: translateY(-20%) rotate(225deg); }
    .faq-panel { display: none; padding: 0 8px 22px 0; color: var(--muted); }
    .faq-item.is-open .faq-panel { display: block; }
    .faq-panel p { margin: 0; }

    .guarantee { background: var(--bg); padding: 56px 0; }
    .g-row {
      display: grid; grid-template-columns: repeat(4, 1fr);
      border: 1px solid var(--line); background: #fff; border-radius: 10px; overflow: hidden;
    }
    .g-item { padding: 28px 22px; border-right: 1px solid var(--line); }
    .g-item:last-child { border-right: 0; }
    .g-item h3 { font-size: 18px; margin-bottom: 8px; }
    .g-item p { margin: 0; color: var(--muted); font-size: 14px; }

    .convert {
      background: linear-gradient(180deg, #E7F0F8 0%, #F3F6FA 100%);
      padding: 92px 0 100px;
    }
    .convert-grid { display: grid; grid-template-columns: 0.92fr 1.08fr; gap: 48px; align-items: start; }
    .convert-aside {
      background: var(--primary-ink); color: #EAF1F8; padding: 36px 32px; border-radius: 10px;
    }
    .convert-aside h3, .convert-aside p { color: #F4F8FC; }
    .convert-aside a { color: #fff; }
    .convert-aside dl { margin: 20px 0 0; }
    .convert-aside dt { font-size: 12px; letter-spacing: 0.12em; color: rgba(255,255,255,.62); margin-top: 14px; }
    .convert-aside dd { margin: 4px 0 0; font-size: 18px; }
    .form-card {
      background: #fff; border: 1px solid var(--line); border-radius: 10px;
      box-shadow: var(--shadow); padding: 32px;
    }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .field { display: flex; flex-direction: column; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    label { font-size: 14px; color: var(--primary-ink); font-weight: 600; }
    input, select, textarea {
      border: 1px solid var(--line); border-radius: 6px; padding: 11px 12px;
      background: #fff; color: var(--ink); min-height: 46px;
      transition: border-color var(--ease), box-shadow var(--ease);
    }
    textarea { min-height: 120px; resize: vertical; }
    input:focus, select:focus, textarea:focus {
      outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(47,111,168,.15);
    }
    .form-note { font-size: 13px; color: var(--muted); margin: 10px 0 16px; }
    .form-success {
      display: none; padding: 14px 16px; border-radius: 6px; margin-bottom: 14px;
      background: rgba(47,111,168,.1); color: var(--primary-ink); border: 1px solid var(--line);
    }
    .form-success.is-show { display: block; }

    .site-footer {
      background: #17344C; color: rgba(232,238,244,.84); padding: 64px 0 28px;
    }
    .footer-grid { display: grid; grid-template-columns: 1.3fr 0.9fr 1fr 1fr; gap: 36px; margin-bottom: 40px; }
    .site-footer h3 { color: #fff; font-size: 16px; margin-bottom: 14px; }
    .site-footer a { color: rgba(232,238,244,.84); }
    .site-footer a:hover { color: #fff; text-decoration: underline; }
    .footer-brand .logo { color: #fff; margin-bottom: 14px; }
    .footer-brand .logo-text span { color: rgba(232,238,244,.7); }
    .footer-links { display: grid; gap: 8px; }
    .copyright {
      border-top: 1px solid rgba(213,225,238,.16); padding-top: 18px; font-size: 13px;
      display: flex; flex-wrap: wrap; gap: 8px 18px; justify-content: space-between;
    }

    .floatbar {
      position: fixed; left: 0; right: 0; bottom: 0; z-index: 70;
      background: rgba(255,255,255,.96); border-top: 1px solid var(--line);
      box-shadow: 0 -8px 24px rgba(31,61,87,.08);
      transform: translateY(110%); transition: transform 220ms ease;
    }
    .floatbar.is-show { transform: translateY(0); }
    .floatbar-inner {
      display: flex; align-items: center; justify-content: space-between; gap: 16px;
      min-height: 64px;
    }
    .floatbar p { margin: 0; font-weight: 600; }
    .floatbar-actions { display: flex; gap: 10px; align-items: center; }

    @media (max-width: 1200px) {
      .intro-grid, .scene-stage, .cases-grid, .convert-grid { gap: 32px; }
      .news-grid { grid-template-columns: repeat(2, 1fr); }
      .adv-grid article:nth-child(n) { transform: none; }
    }
    @media (max-width: 992px) {
      .section { padding: 72px 0; }
      .nav-links, .nav-cta .btn { display: none; }
      .menu-toggle { display: inline-flex; }
      .intro-grid, .scene-stage, .service-grid, .cases-grid, .convert-grid, .story, .story.reverse {
        grid-template-columns: 1fr;
      }
      .story.reverse .story-media { order: 0; }
      .intro-note { left: 16px; width: 84%; }
      .adv-grid, .review-grid { grid-template-columns: repeat(2, 1fr); }
      .timeline { grid-template-columns: 1fr; gap: 18px; }
      .timeline::before { display: none; }
      .tl { padding: 0 0 8px 22px; border-left: 1px solid var(--line); }
      .tl-dot { position: absolute; left: -7px; top: 4px; margin: 0; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .hero, .hero-track, .hero-copy { min-height: 68vh; }
      .form-grid { grid-template-columns: 1fr; }
    }
    @media (max-width: 768px) {
      .container { width: min(100% - 32px, var(--container)); }
      .topbar-left span.hide-sm { display: none; }
      .points-row, .stats-row, .g-row { grid-template-columns: 1fr 1fr; }
      .point, .g-item { border-right: 0; border-bottom: 1px solid var(--line); }
      .service-mini { grid-template-columns: 1fr; }
      .service-mini img { width: 100%; height: 160px; }
      .case-item { grid-template-columns: 1fr; }
      .case-item img { width: 100%; height: 160px; }
      .case-item .body { padding: 16px; }
      .table-wrap { display: none; }
      .compare-mobile { display: grid; gap: 12px; }
      .cmp-card { background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 16px; box-shadow: var(--shadow); }
      .cmp-card h3 { font-size: 16px; }
      .cmp-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; font-size: 14px; }
      .cmp-pair span { color: var(--muted); }
      .hero-actions { flex-direction: column; align-items: stretch; }
      .hero-actions .btn { width: 100%; min-height: 48px; }
      .floatbar p { display: none; }
      .logo-text strong { font-size: 15px; }
      .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    }
    @media (max-width: 520px) {
      .points-row, .stats-row, .g-row, .adv-grid, .review-grid, .news-grid { grid-template-columns: 1fr; }
      .point { padding: 32px 8px 28px; }
      .hero-copy { padding: 56px 0 96px; }
      .hero-copy-inner h1, .hero-copy-inner .hero-title { word-break: break-word; }
      .intro-figure img, .story img { height: 240px; }
      .scene-visual { min-height: 260px; }
      .service-feature { min-height: 360px; }
    }
    @media (max-width: 375px) {
      h1, .hero-title { font-size: 28px; }
      .section { padding: 52px 0; }
      .badge { font-size: 11px; }
    }

/* roulang page: index */
:root {
      --bg: #F3F6FA;
      --surface: #FFFFFF;
      --primary: #2F6FA8;
      --primary-ink: #1E4C78;
      --ink: #1C2C3A;
      --muted: #5B6B7C;
      --line: #D5E1EE;
      --accent: #B8956A;
      --dark: #1F3D57;
      --paper: #F7F1E8;
      --shadow: 0 10px 30px rgba(31, 61, 87, 0.08);
      --shadow-hover: 0 16px 40px rgba(31, 61, 87, 0.12);
      --radius: 8px;
      --radius-btn: 5px;
      --container: 1200px;
      --ease: 180ms ease;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: "Noto Sans SC", "PingFang SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
      font-size: 16px;
      line-height: 1.75;
      color: var(--ink);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
    }
    body.nav-open { overflow: hidden; }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--primary); text-decoration: none; transition: color var(--ease); }
    a:hover { color: var(--primary-ink); }
    button, input, select, textarea { font-family: inherit; font-size: inherit; }
    button { cursor: pointer; border: 0; background: none; }
    h1, h2, h3, h4 {
      font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
      font-weight: 700;
      color: var(--ink);
      line-height: 1.28;
      margin: 0 0 16px;
    }
    h1 { font-size: clamp(28px, 4.2vw, 46px); }
    h2 { font-size: clamp(22px, 2.6vw, 32px); }
    h3 { font-size: clamp(18px, 1.8vw, 22px); }
    p { margin: 0 0 16px; color: var(--ink); }
    ul { margin: 0; padding: 0; list-style: none; }
    :focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
    .container { width: min(100% - 40px, var(--container)); margin: 0 auto; }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 46px; padding: 0 22px; border-radius: var(--radius-btn);
      font-weight: 600; letter-spacing: 0.02em;
      transition: background var(--ease), color var(--ease), transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }
    .btn-primary { background: var(--primary); color: #fff; box-shadow: 0 8px 18px rgba(47, 111, 168, 0.22); }
    .btn-primary:hover, .btn-primary:active {
      background: var(--primary-ink); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-hover);
    }
    .btn-ghost { background: transparent; color: var(--primary-ink); border: 1.5px solid var(--primary); }
    .btn-ghost:hover { background: rgba(47, 111, 168, 0.08); color: var(--primary-ink); transform: translateY(-1px); }
    .btn-light { background: #fff; color: var(--primary-ink); }
    .btn-light:hover { background: var(--paper); color: var(--primary-ink); }
    .btn-block { width: 100%; }
    .badge {
      display: inline-flex; align-items: center;
      padding: 4px 10px; border-radius: 3px; border: 1px solid var(--accent);
      color: var(--accent); font-size: 12px; letter-spacing: 0.08em;
      background: rgba(184, 149, 106, 0.08);
    }
    .kicker {
      display: inline-block; margin-bottom: 10px;
      color: var(--primary); font-size: 13px; font-weight: 600; letter-spacing: 0.16em;
    }
    .lead { color: var(--muted); font-size: 16px; max-width: 760px; }
    .section { padding: 100px 0; position: relative; }
    .section-head { margin-bottom: 48px; max-width: 780px; }

    .site-header { position: sticky; top: 0; z-index: 80; background: var(--surface); }
    .topbar {
      background: rgba(47, 111, 168, 0.07);
      border-bottom: 1px solid var(--line);
      font-size: 13px; color: var(--muted);
    }
    .topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 38px; }
    .topbar-left { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 18px; }
    .topbar a { color: var(--primary-ink); }
    .topbar a:hover { text-decoration: underline; }
    .nav-wrap { background: #fff; }
    .site-header.is-stuck .nav-wrap { border-bottom: 1px solid var(--line); box-shadow: 0 8px 24px rgba(31, 61, 87, 0.06); }
    .nav-main { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 66px; }
    .logo { display: flex; align-items: center; gap: 10px; color: var(--ink); flex-shrink: 0; }
    .logo:hover { color: var(--primary-ink); }
    .logo-mark {
      width: 36px; height: 36px; border: 1.5px solid var(--primary);
      display: grid; place-items: center; border-radius: 4px; background: #fff;
    }
    .logo-text { display: flex; flex-direction: column; line-height: 1.15; }
    .logo-text strong { font-family: "Noto Serif SC", "Songti SC", serif; font-size: 17px; font-weight: 700; }
    .logo-text span { font-size: 11px; color: var(--muted); letter-spacing: 0.12em; }
    .nav-links { display: flex; align-items: center; gap: 4px 22px; }
    .nav-links a { color: var(--ink); font-size: 15px; font-weight: 500; padding: 8px 0; position: relative; }
    .nav-links a::after {
      content: ""; position: absolute; left: 0; right: 0; bottom: 2px; height: 1.5px;
      background: var(--primary); transform: scaleX(0); transform-origin: left; transition: transform var(--ease);
    }
    .nav-links a:hover { color: var(--primary-ink); }
    .nav-links a:hover::after { transform: scaleX(1); }
    .nav-cta { display: flex; align-items: center; gap: 12px; }
    .menu-toggle {
      display: none; width: 44px; height: 44px; border-radius: 6px;
      border: 1px solid var(--line); align-items: center; justify-content: center; flex-direction: column; gap: 5px;
    }
    .menu-toggle span { display: block; width: 18px; height: 1.5px; background: var(--ink); transition: transform var(--ease), opacity var(--ease); }
    body.nav-open .menu-toggle span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
    body.nav-open .menu-toggle span:nth-child(2) { opacity: 0; }
    body.nav-open .menu-toggle span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
    .drawer {
      position: fixed; inset: 104px 0 0 auto; width: min(86vw, 360px);
      background: #fff; box-shadow: var(--shadow-hover);
      transform: translateX(110%); transition: transform 220ms ease;
      z-index: 90; padding: 24px; overflow: auto;
    }
    body.nav-open .drawer { transform: translateX(0); }
    .drawer a {
      display: flex; align-items: center; min-height: 48px;
      border-bottom: 1px solid var(--line); color: var(--ink); font-size: 16px;
    }
    .drawer-actions { display: grid; gap: 10px; margin-top: 20px; }
    .drawer-backdrop { display: none; position: fixed; inset: 104px 0 0; background: rgba(28,44,58,.28); z-index: 85; }
    body.nav-open .drawer-backdrop { display: block; }

    .hero { position: relative; min-height: 78vh; background: #d9e3ee; overflow: hidden; }
    .hero-track { position: relative; min-height: 78vh; }
    .hero-slide {
      position: absolute; inset: 0; opacity: 0; visibility: hidden;
      transition: opacity 520ms ease, visibility 520ms ease;
    }
    .hero-slide.is-active { opacity: 1; visibility: visible; z-index: 1; }
    .hero-slide img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
    .hero-mask {
      position: absolute; inset: 0;
      background: linear-gradient(90deg, rgba(243,246,250,0.9) 0%, rgba(243,246,250,0.62) 46%, rgba(47,111,168,0.16) 100%);
    }
    .hero-copy { position: relative; z-index: 2; min-height: 78vh; display: flex; align-items: center; padding: 72px 0 88px; }
    .hero-copy-inner { max-width: 700px; }
    .hero-title {
      font-family: "Noto Serif SC", serif; font-size: clamp(28px, 4.2vw, 46px);
      font-weight: 700; line-height: 1.28; margin: 12px 0 16px; color: var(--ink);
    }
    .hero-copy p { font-size: 17px; color: var(--ink); max-width: 640px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .hero-nav {
      position: absolute; z-index: 3; left: 0; right: 0; bottom: 28px;
      display: flex; align-items: center; justify-content: space-between;
      width: min(100% - 40px, var(--container)); margin: 0 auto;
    }
    .hero-arrows { display: flex; gap: 8px; }
    .hero-btn {
      width: 44px; height: 44px; border-radius: 4px; border: 1px solid var(--line);
      background: rgba(255,255,255,.92); color: var(--primary-ink); display: grid; place-items: center;
    }
    .hero-btn:hover { background: #fff; box-shadow: var(--shadow); }
    .hero-dots { display: flex; gap: 8px; }
    .hero-dots button { width: 28px; height: 4px; border-radius: 2px; background: rgba(30,76,120,.25); }
    .hero-dots button.is-active { background: var(--primary); }

    .points { background: var(--surface); padding: 0; }
    .points-row { display: grid; grid-template-columns: repeat(3, 1fr); border-bottom: 1px solid var(--line); }
    .point { padding: 48px 36px 40px; border-right: 1px solid var(--line); }
    .point:last-child { border-right: 0; }
    .point-num { font-family: "Noto Serif SC", serif; font-size: 13px; letter-spacing: 0.2em; color: var(--accent); margin-bottom: 18px; }
    .point svg { width: 26px; height: 26px; stroke: var(--primary); fill: none; stroke-width: 1.6; margin-bottom: 16px; }
    .point h3 { font-size: 20px; margin-bottom: 10px; }
    .point p { margin: 0; color: var(--muted); }

    .intro { background: var(--bg); }
    .intro-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; align-items: center; }
    .intro-figure { position: relative; margin-top: 36px; }
    .intro-figure img { width: 100%; height: 460px; object-fit: cover; border-radius: 10px; box-shadow: var(--shadow); border: 1px solid var(--line); }
    .intro-note {
      position: absolute; left: -24px; bottom: 28px; width: 70%;
      background: #fff; padding: 18px 20px; border-radius: 8px;
      box-shadow: var(--shadow); border: 1px solid var(--line); font-size: 14px; color: var(--muted);
    }
    .fact-list { margin-top: 24px; display: grid; gap: 12px; }
    .fact-list li {
      display: grid; grid-template-columns: 88px 1fr; gap: 12px;
      padding: 12px 0; border-top: 1px solid var(--line); font-size: 15px;
    }
    .fact-list strong { color: var(--primary-ink); font-weight: 600; }

    .scenes { background: var(--surface); }
    .scene-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
    .scene-tab {
      min-height: 44px; padding: 0 16px; border-radius: 4px;
      border: 1px solid var(--line); background: #fff; color: var(--muted);
    }
    .scene-tab.is-active, .scene-tab:hover { border-color: var(--primary); color: var(--primary-ink); background: rgba(47,111,168,.06); }
    .scene-stage { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 36px; align-items: stretch; }
    .scene-visual { position: relative; border-radius: 10px; overflow: hidden; min-height: 420px; border: 1px solid var(--line); }
    .scene-visual img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
    .scene-caption {
      position: absolute; left: 16px; right: 16px; bottom: 16px;
      background: rgba(255,255,255,.92); padding: 14px 16px; border-radius: 6px;
    }
    .scene-caption strong { display: block; font-family: "Noto Serif SC", serif; }
    .steps { display: grid; background: var(--bg); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
    .step { padding: 22px 24px; border-bottom: 1px solid var(--line); }
    .step:last-child { border-bottom: 0; }
    .step-index { font-size: 12px; letter-spacing: 0.16em; color: var(--accent); margin-bottom: 6px; }
    .step h3 { margin-bottom: 6px; }
    .step p { margin: 0; color: var(--muted); font-size: 15px; }
    .io { display: flex; gap: 16px; margin-top: 8px; font-size: 13px; color: var(--primary-ink); }

    .adv { background: var(--bg); }
    .adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
    .adv-grid article:nth-child(4),
    .adv-grid article:nth-child(5),
    .adv-grid article:nth-child(6) { transform: translateY(18px); }
    .adv-card {
      background: #fff; border: 1px solid var(--line); border-radius: 10px;
      padding: 28px 24px 26px; box-shadow: var(--shadow);
      transition: transform var(--ease), box-shadow var(--ease);
    }
    .adv-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
    .adv-card svg { width: 26px; height: 26px; stroke: var(--primary); fill: none; stroke-width: 1.6; margin-bottom: 16px; }
    .adv-card p { margin: 0; color: var(--muted); font-size: 15px; }

    .services { background: var(--surface); }
    .service-grid { display: grid; grid-template-columns: 1.35fr 1fr; gap: 22px; }
    .service-feature {
      position: relative; min-height: 460px; border-radius: 10px; overflow: hidden;
      border: 1px solid var(--line); box-shadow: var(--shadow);
    }
    .service-feature img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
    .service-feature .body {
      position: absolute; inset: auto 0 0; padding: 28px;
      background: linear-gradient(180deg, rgba(31,61,87,0) 0%, rgba(31,61,87,.88) 70%);
      color: #fff;
    }
    .service-feature h3, .service-feature p { color: #fff; }
    .service-stack { display: grid; gap: 22px; }
    .service-mini {
      background: #fff; border: 1px solid var(--line); border-radius: 10px;
      box-shadow: var(--shadow); overflow: hidden; display: grid; grid-template-columns: 148px 1fr;
      transition: transform var(--ease), box-shadow var(--ease);
    }
    .service-mini:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
    .service-mini img { width: 148px; height: 100%; object-fit: cover; }
    .service-mini .body { padding: 20px 20px 18px; }
    .price { display: inline-block; margin: 8px 0 12px; color: var(--accent); font-size: 13px; letter-spacing: 0.04em; }

    .process { background: var(--bg); }
    .timeline { display: grid; grid-template-columns: repeat(5, 1fr); position: relative; }
    .timeline::before {
      content: ""; position: absolute; left: 6%; right: 6%; top: 27px; height: 1px; background: var(--line);
    }
    .tl { padding: 0 14px; position: relative; }
    .tl-dot {
      width: 14px; height: 14px; border-radius: 50%;
      background: var(--primary); border: 3px solid #fff; box-shadow: 0 0 0 1px var(--primary);
      margin-bottom: 22px; position: relative; z-index: 1;
    }
    .tl h3 { font-size: 18px; }
    .tl p { color: var(--muted); font-size: 14px; margin: 0; }
    .tl .io { display: block; margin-top: 10px; }

    .cases { background: var(--dark); color: #E8EEF4; padding: 100px 0; position: relative; overflow: hidden; }
    .cases::before {
      content: ""; position: absolute; inset: 0;
      background: url("/assets/images/a9e44d0b3b8ef4e8.webp") center/cover no-repeat; opacity: .16;
    }
    .cases .container { position: relative; z-index: 1; }
    .cases h2, .cases h3 { color: #F4F7FB; }
    .cases-grid { display: grid; grid-template-columns: 0.72fr 1.28fr; gap: 48px; align-items: start; }
    .case-hero-num { font-family: "Noto Serif SC", serif; font-size: clamp(56px, 8vw, 92px); line-height: .9; color: var(--accent); margin: 8px 0 18px; }
    .case-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
    .case-tags span { border: 1px solid rgba(184,149,106,.5); color: var(--accent); padding: 4px 10px; font-size: 12px; letter-spacing: 0.08em; }
    .cases .lead { color: rgba(232,238,244,.82); }
    .case-list { display: grid; gap: 16px; }
    .case-item {
      display: grid; grid-template-columns: 140px 1fr; gap: 18px;
      background: rgba(255,255,255,.06); border: 1px solid rgba(213,225,238,.16); border-radius: 8px; overflow: hidden;
    }
    .case-item img { width: 140px; height: 100%; object-fit: cover; opacity: .78; }
    .case-item .body { padding: 16px 16px 16px 0; }
    .case-item p { color: rgba(232,238,244,.84); margin: 0; font-size: 15px; }

    .compare { background: var(--surface); }
    .table-wrap { overflow: auto; border: 1px solid var(--line); border-radius: 10px; box-shadow: var(--shadow); }
    table.compare-table { width: 100%; border-collapse: collapse; min-width: 680px; background: #fff; }
    .compare-table th, .compare-table td { padding: 16px 20px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
    .compare-table thead th { background: var(--primary); color: #fff; font-weight: 600; font-size: 15px; }
    .compare-table tbody th { width: 22%; color: var(--primary-ink); font-weight: 600; background: #F8FBFE; }
    .compare-table tr:last-child td, .compare-table tr:last-child th { border-bottom: 0; }
    .compare-mobile { display: none; }

    .stories { background: var(--bg); }
    .story { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 40px; align-items: center; margin-bottom: 48px; }
    .story:last-child { margin-bottom: 0; }
    .story.reverse { grid-template-columns: 1.1fr 0.9fr; }
    .story.reverse .story-media { order: 2; }
    .story img { width: 100%; height: 320px; object-fit: cover; border-radius: 10px; border: 1px solid var(--line); box-shadow: var(--shadow); }
    .story-meta { color: var(--accent); font-size: 13px; letter-spacing: 0.06em; margin-bottom: 8px; }
    .story blockquote { margin: 0; padding-left: 14px; border-left: 4px solid var(--accent); color: var(--muted); }

    .stats {
      background: linear-gradient(180deg, rgba(47,111,168,.08), rgba(47,111,168,.03));
      padding: 56px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
    }
    .stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
    .stat { text-align: left; padding: 8px 12px; }
    .stat-num { font-family: "Noto Serif SC", serif; font-size: clamp(32px, 4vw, 42px); color: var(--primary-ink); line-height: 1.1; }
    .stat-num small { font-size: 16px; margin-left: 4px; color: var(--primary); }
    .stat p { margin: 8px 0 0; color: var(--muted); font-size: 14px; }

    .reviews { background: var(--surface); }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
    .review {
      background: #fff; border: 1px solid var(--line); border-radius: 10px;
      box-shadow: var(--shadow); padding: 24px 24px 22px 22px; border-left: 4px solid var(--accent);
    }
    .stars { display: flex; gap: 3px; margin-bottom: 12px; }
    .stars svg { width: 14px; height: 14px; stroke: var(--primary); fill: none; stroke-width: 1.6; }
    .review p { color: var(--muted); min-height: 88px; }
    .review-who { display: flex; align-items: center; gap: 10px; margin-top: 8px; }
    .avatar {
      width: 36px; height: 36px; border-radius: 4px; background: rgba(47,111,168,.12);
      color: var(--primary-ink); display: grid; place-items: center;
      font-family: "Noto Serif SC", serif; font-weight: 700;
    }
    .review-who small { display: block; color: var(--muted); font-size: 12px; }

    .news { background: var(--bg); }
    .news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
    .news-card {
      background: #fff; border: 1px solid var(--line); border-radius: 10px; overflow: hidden;
      box-shadow: var(--shadow); display: flex; flex-direction: column;
      transition: transform var(--ease), box-shadow var(--ease);
    }
    .news-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
    .news-card img { width: 100%; height: 168px; object-fit: cover; }
    .news-card .body { padding: 18px 18px 20px; display: flex; flex-direction: column; flex: 1; }
    .news-card h3 { font-size: 18px; }
    .news-card p { color: var(--muted); font-size: 14px; flex: 1; }
    .news-more { margin-top: 28px; }

    .faq { background: var(--surface); }
    .faq-list { max-width: 880px; }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item button {
      width: 100%; text-align: left; min-height: 64px; padding: 18px 40px 18px 0;
      font-family: "Noto Serif SC", serif; font-size: 18px; color: var(--ink); position: relative;
    }
    .faq-item button::after {
      content: ""; position: absolute; right: 6px; top: 50%; width: 12px; height: 12px;
      border-right: 1.5px solid var(--primary); border-bottom: 1.5px solid var(--primary);
      transform: translateY(-70%) rotate(45deg); transition: transform var(--ease);
    }
    .faq-item.is-open button::after { transform: translateY(-20%) rotate(225deg); }
    .faq-panel { display: none; padding: 0 8px 22px 0; color: var(--muted); }
    .faq-item.is-open .faq-panel { display: block; }
    .faq-panel p { margin: 0; }

    .guarantee { background: var(--bg); padding: 56px 0; }
    .g-row { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); background: #fff; border-radius: 10px; overflow: hidden; }
    .g-item { padding: 28px 22px; border-right: 1px solid var(--line); }
    .g-item:last-child { border-right: 0; }
    .g-item h3 { font-size: 18px; margin-bottom: 8px; }
    .g-item p { margin: 0; color: var(--muted); font-size: 14px; }

    .convert { background: linear-gradient(180deg, #E7F0F8 0%, #F3F6FA 100%); padding: 92px 0 100px; }
    .convert-grid { display: grid; grid-template-columns: 0.92fr 1.08fr; gap: 48px; align-items: start; }
    .convert-aside { background: var(--primary-ink); color: #EAF1F8; padding: 36px 32px; border-radius: 10px; }
    .convert-aside h2, .convert-aside h3, .convert-aside p { color: #F4F8FC; }
    .convert-aside a { color: #fff; }
    .convert-aside dl { margin: 20px 0 0; }
    .convert-aside dt { font-size: 12px; letter-spacing: 0.12em; color: rgba(255,255,255,.62); margin-top: 14px; }
    .convert-aside dd { margin: 4px 0 0; font-size: 18px; }
    .form-card { background: #fff; border: 1px solid var(--line); border-radius: 10px; box-shadow: var(--shadow); padding: 32px; }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .field { display: flex; flex-direction: column; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    label { font-size: 14px; color: var(--primary-ink); font-weight: 600; }
    input, select, textarea {
      border: 1px solid var(--line); border-radius: 6px; padding: 11px 12px;
      background: #fff; color: var(--ink); min-height: 46px;
      transition: border-color var(--ease), box-shadow var(--ease);
    }
    textarea { min-height: 120px; resize: vertical; }
    input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(47,111,168,.15); }
    .form-note { font-size: 13px; color: var(--muted); margin: 10px 0 16px; }
    .form-success {
      display: none; padding: 14px 16px; border-radius: 6px; margin-bottom: 14px;
      background: rgba(47,111,168,.1); color: var(--primary-ink); border: 1px solid var(--line);
    }
    .form-success.is-show { display: block; }

    .site-footer { background: #17344C; color: rgba(232,238,244,.84); padding: 64px 0 28px; }
    .footer-grid { display: grid; grid-template-columns: 1.3fr 0.9fr 1fr 1fr; gap: 36px; margin-bottom: 40px; }
    .site-footer h3 { color: #fff; font-size: 16px; margin-bottom: 14px; }
    .site-footer a { color: rgba(232,238,244,.84); }
    .site-footer a:hover { color: #fff; text-decoration: underline; }
    .footer-brand .logo { color: #fff; margin-bottom: 14px; }
    .footer-brand .logo-text span { color: rgba(232,238,244,.7); }
    .footer-links { display: grid; gap: 8px; }
    .copyright {
      border-top: 1px solid rgba(213,225,238,.16); padding-top: 18px; font-size: 13px;
      display: flex; flex-wrap: wrap; gap: 8px 18px; justify-content: space-between;
    }

    .floatbar {
      position: fixed; left: 0; right: 0; bottom: 0; z-index: 70;
      background: rgba(255,255,255,.96); border-top: 1px solid var(--line);
      box-shadow: 0 -8px 24px rgba(31,61,87,.08);
      transform: translateY(110%); transition: transform 220ms ease;
    }
    .floatbar.is-show { transform: translateY(0); }
    .floatbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; }
    .floatbar p { margin: 0; font-weight: 600; }
    .floatbar-actions { display: flex; gap: 10px; align-items: center; }

    @media (max-width: 1200px) {
      .intro-grid, .scene-stage, .cases-grid, .convert-grid { gap: 32px; }
      .news-grid { grid-template-columns: repeat(2, 1fr); }
      .adv-grid article:nth-child(n) { transform: none; }
    }
    @media (max-width: 992px) {
      .section { padding: 72px 0; }
      .nav-links, .nav-cta .btn { display: none; }
      .menu-toggle { display: inline-flex; }
      .intro-grid, .scene-stage, .service-grid, .cases-grid, .convert-grid, .story, .story.reverse { grid-template-columns: 1fr; }
      .story.reverse .story-media { order: 0; }
      .intro-note { left: 16px; width: 84%; }
      .adv-grid, .review-grid { grid-template-columns: repeat(2, 1fr); }
      .timeline { grid-template-columns: 1fr; gap: 18px; }
      .timeline::before { display: none; }
      .tl { padding: 0 0 8px 22px; border-left: 1px solid var(--line); }
      .tl-dot { position: absolute; left: -7px; top: 4px; margin: 0; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .hero, .hero-track, .hero-copy { min-height: 68vh; }
      .form-grid { grid-template-columns: 1fr; }
    }
    @media (max-width: 768px) {
      .container { width: min(100% - 32px, var(--container)); }
      .topbar-left span.hide-sm { display: none; }
      .points-row, .stats-row, .g-row { grid-template-columns: 1fr 1fr; }
      .point, .g-item { border-right: 0; border-bottom: 1px solid var(--line); }
      .service-mini { grid-template-columns: 1fr; }
      .service-mini img { width: 100%; height: 160px; }
      .case-item { grid-template-columns: 1fr; }
      .case-item img { width: 100%; height: 160px; }
      .case-item .body { padding: 16px; }
      .table-wrap { display: none; }
      .compare-mobile { display: grid; gap: 12px; }
      .cmp-card { background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 16px; box-shadow: var(--shadow); }
      .cmp-card h3 { font-size: 16px; }
      .cmp-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; font-size: 14px; }
      .cmp-pair span { color: var(--muted); }
      .hero-actions { flex-direction: column; align-items: stretch; }
      .hero-actions .btn { width: 100%; min-height: 48px; }
      .floatbar p { display: none; }
      .logo-text strong { font-size: 15px; }
      .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    }
    @media (max-width: 520px) {
      .points-row, .stats-row, .g-row, .adv-grid, .review-grid, .news-grid { grid-template-columns: 1fr; }
      .point { padding: 32px 8px 28px; }
      .hero-copy { padding: 56px 0 96px; }
      .intro-figure img, .story img { height: 240px; }
      .scene-visual { min-height: 260px; }
      .service-feature { min-height: 360px; }
    }
    @media (max-width: 375px) {
      h1, .hero-title { font-size: 28px; }
      .section { padding: 52px 0; }
    }