/* roulang page: index */
:root {
      --primary: #1F6FB2;
      --primary-dark: #155A91;
      --primary-light: #E7F2FB;
      --accent: #1A9B8E;
      --ink: #243039;
      --warm: #D9A441;
      --bg: #F5F8FB;
      --surface: #FFFFFF;
      --muted: #5B6B75;
      --line: #D7E3EE;
      --danger: #C4473A;
      --radius: 14px;
      --radius-sm: 8px;
      --shadow: 0 8px 28px rgba(31,111,178,.08), 0 1px 3px rgba(36,48,57,.06);
      --shadow-hover: 0 14px 36px rgba(31,111,178,.14), 0 2px 8px rgba(36,48,57,.08);
      --space: 8px;
      --container: 1200px;
      --header-h: 108px;
      --sticky-h: 64px;
      --font: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    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(--primary); text-decoration: none; transition: color .2s ease, opacity .2s ease; }
    a:hover { color: var(--primary-dark); }
    button, input, select, textarea { font-family: inherit; font-size: 16px; }
    button { cursor: pointer; }
    h1, h2, h3, h4, p { margin: 0; }
    ul { margin: 0; padding: 0; list-style: none; }
    :focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
    .container { width: min(100% - 40px, var(--container)); margin: 0 auto; }
    .skip { position: absolute; left: -999px; top: 0; }
    .skip:focus { left: 16px; top: 16px; background: #fff; padding: 8px 12px; z-index: 300; }

    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 10px 20px; border-radius: var(--radius-sm);
      font-weight: 600; border: 1px solid transparent; letter-spacing: .02em;
      transition: background .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease, color .2s ease;
    }
    .btn-primary {
      background: var(--primary); color: #fff;
      box-shadow: inset 0 -1px 0 rgba(0,0,0,.08);
    }
    .btn-primary:hover {
      background: var(--primary-dark); color: #fff;
      box-shadow: inset 0 1px 4px rgba(0,0,0,.16);
      transform: translateY(-1px);
    }
    .btn-primary:active { transform: translateY(0); }
    .btn-ghost {
      background: #fff; color: var(--primary); border-color: var(--primary);
    }
    .btn-ghost:hover { background: var(--primary-light); color: var(--primary-dark); }
    .btn-light { background: #fff; color: var(--ink); border-color: #fff; }
    .btn-light:hover { background: var(--primary-light); color: var(--primary-dark); }
    .badge {
      display: inline-flex; align-items: center; gap: 6px;
      padding: 4px 10px; border-radius: 999px; font-size: 12px; font-weight: 600;
      background: var(--primary-light); color: var(--primary-dark); letter-spacing: .04em;
    }
    .badge-warm { background: rgba(217,164,65,.16); color: #8A6918; }
    .badge-accent { background: rgba(26,155,142,.12); color: var(--accent); }

    .site-header {
      position: sticky; top: 0; z-index: 100;
      background: #fff; box-shadow: 0 1px 0 var(--line);
    }
    .topbar {
      background: #EEF4F9; color: #4A5C67; font-size: 13px;
      min-height: 36px; display: flex; align-items: center;
    }
    .topbar .container {
      display: flex; justify-content: space-between; align-items: center; gap: 16px;
    }
    .topbar a { color: #4A5C67; }
    .topbar a:hover { color: var(--primary); }
    .topbar-left, .topbar-right { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
    .topbar-consult {
      min-height: 28px; padding: 2px 10px; border: 1px solid var(--primary);
      border-radius: 6px; color: var(--primary); font-weight: 600;
    }
    .nav-row {
      min-height: 72px; display: flex; align-items: center;
    }
    .nav-row .container {
      display: flex; align-items: center; gap: 24px;
    }
    .logo {
      display: flex; align-items: center; gap: 10px; color: var(--ink); flex-shrink: 0;
    }
    .logo:hover { color: var(--ink); }
    .logo-mark {
      width: 42px; height: 42px; border-radius: 10px;
      background: linear-gradient(160deg, var(--primary) 0%, #2B8BC4 58%, var(--accent) 100%);
      display: grid; place-items: center; position: relative; overflow: hidden;
    }
    .logo-mark::after {
      content: ""; position: absolute; inset: 6px;
      background:
        linear-gradient(90deg, rgba(255,255,255,.18) 1px, transparent 1px) 0 0 / 6px 6px,
        linear-gradient(rgba(255,255,255,.18) 1px, transparent 1px) 0 0 / 6px 6px;
    }
    .logo-text { display: flex; flex-direction: column; line-height: 1.2; }
    .logo-text strong { font-size: 18px; font-weight: 700; }
    .logo-text span { font-size: 12px; color: var(--primary); font-weight: 600; }
    .nav-links { display: flex; align-items: center; gap: 4px; margin-left: auto; }
    .nav-links a {
      position: relative; color: var(--ink); padding: 10px 12px; min-height: 44px;
      display: inline-flex; align-items: center; font-weight: 500; font-size: 15px;
    }
    .nav-links a::after {
      content: ""; position: absolute; left: 12px; right: 12px; bottom: 6px; height: 2px;
      background: var(--primary); transform: scaleX(0); transform-origin: left; transition: transform .2s ease;
    }
    .nav-links a:hover, .nav-links a.is-active { color: var(--primary); }
    .nav-links a.is-active::after, .nav-links a:hover::after { transform: scaleX(1); }
    .nav-cta { margin-left: 8px; flex-shrink: 0; }
    .nav-toggle {
      display: none; width: 44px; height: 44px; border: 1px solid var(--line);
      background: #fff; border-radius: 8px; padding: 10px;
    }
    .nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
      display: block; height: 2px; background: var(--ink); border-radius: 2px; position: relative;
    }
    .nav-toggle span::before, .nav-toggle span::after {
      content: ""; position: absolute; left: 0; right: 0;
    }
    .nav-toggle span::before { top: -7px; }
    .nav-toggle span::after { top: 7px; }
    .drawer-backdrop {
      position: fixed; inset: 0; background: rgba(36,48,57,.35); opacity: 0; pointer-events: none;
      transition: opacity .2s ease; z-index: 160;
    }
    .drawer-backdrop.is-open { opacity: 1; pointer-events: auto; }
    .drawer {
      position: fixed; top: 0; right: 0; width: min(86vw, 360px); height: 100%;
      background: #fff; z-index: 180; transform: translateX(100%);
      transition: transform .25s ease; padding: 24px 20px 32px;
      box-shadow: -12px 0 32px rgba(36,48,57,.12); display: flex; flex-direction: column; gap: 8px;
    }
    .drawer.is-open { transform: translateX(0); }
    .drawer a {
      min-height: 48px; display: flex; align-items: center; padding: 0 12px;
      border-left: 3px solid transparent; color: var(--ink); font-weight: 600;
    }
    .drawer a.is-active, .drawer a:hover { border-left-color: var(--primary); background: var(--primary-light); color: var(--primary-dark); }
    .drawer-close {
      align-self: flex-end; width: 44px; height: 44px; border: 0; background: var(--bg); border-radius: 8px; font-size: 22px;
    }

    main { padding-bottom: 24px; }
    .section { padding: 104px 0; position: relative; }
    .section-alt { background: #fff; }
    .section-soft { background: var(--primary-light); }
    .section-head { margin-bottom: 36px; max-width: 760px; }
    .section-head h2 { font-size: 30px; line-height: 1.35; font-weight: 700; margin-bottom: 12px; }
    .section-head p { color: var(--muted); font-size: 16px; }
    .kicker { color: var(--primary); font-size: 13px; font-weight: 700; letter-spacing: .12em; margin-bottom: 8px; }

    #hero { padding: 0; background: #0F1C24; }
    .hero-slider { position: relative; min-height: 620px; overflow: hidden; }
    .hero-slide {
      position: absolute; inset: 0; opacity: 0; pointer-events: none;
      transition: opacity .5s ease;
    }
    .hero-slide.is-active { opacity: 1; pointer-events: auto; z-index: 1; }
    .hero-slide img {
      width: 100%; height: 100%; object-fit: cover; filter: saturate(1.05) contrast(1.04);
    }
    .hero-mask {
      position: absolute; inset: 0; display: flex; align-items: center;
      background: linear-gradient(90deg, rgba(245,248,251,.94) 0%, rgba(231,242,251,.86) 38%, rgba(245,248,251,.18) 68%, transparent 100%);
    }
    .hero-copy { width: min(100% - 40px, var(--container)); margin: 0 auto; padding: 48px 0 88px; }
    .hero-copy-inner { max-width: 620px; }
    .hero-copy h1, .hero-copy .slide-title {
      font-size: 42px; line-height: 1.22; font-weight: 700; margin: 10px 0 16px;
    }
    .hero-lead { color: #3B4A53; margin-bottom: 22px; font-size: 16px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 24px; }
    .hero-count {
      display: grid; grid-template-columns: auto 1fr; gap: 16px; align-items: center;
      background: rgba(255,255,255,.82); border: 1px solid var(--line); border-radius: 12px;
      padding: 14px 16px; box-shadow: var(--shadow); max-width: 520px;
    }
    .count-cells { display: flex; gap: 8px; }
    .count-cell {
      min-width: 58px; background: var(--ink); color: #fff; border-radius: 8px; text-align: center; padding: 8px 6px;
    }
    .count-cell b { display: block; font-size: 22px; font-variant-numeric: tabular-nums; line-height: 1.1; }
    .count-cell span { font-size: 11px; color: #C9D3DA; }
    .count-note { font-size: 13px; color: var(--muted); }
    .count-note strong { color: var(--ink); display: block; font-size: 14px; }
    .hero-nav-btn {
      position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
      width: 44px; height: 44px; border-radius: 50%; border: 1px solid rgba(31,111,178,.25);
      background: rgba(255,255,255,.9); color: var(--primary); font-size: 20px;
    }
    .hero-nav-btn.prev { left: 16px; }
    .hero-nav-btn.next { right: 16px; }
    .hero-dots {
      position: absolute; left: 0; right: 0; bottom: 22px; z-index: 3;
      display: flex; justify-content: center; gap: 8px;
    }
    .hero-dots button {
      width: 28px; height: 8px; border: 0; border-radius: 99px; background: rgba(255,255,255,.7);
    }
    .hero-dots button.is-active { background: var(--primary); width: 36px; }

    #value { padding: 28px 0 0; background: transparent; }
    .value-strip {
      display: grid; grid-template-columns: repeat(3, 1fr);
      background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden;
      margin-top: -48px; position: relative; z-index: 4;
    }
    .value-item { padding: 32px 28px; display: grid; grid-template-columns: auto 1fr; gap: 16px; }
    .value-item + .value-item { border-left: 1px solid var(--line); }
    .value-no { font-size: 28px; font-weight: 700; color: var(--primary); font-variant-numeric: tabular-nums; line-height: 1; }
    .value-item h3 { font-size: 20px; margin-bottom: 6px; }
    .value-metric { color: var(--accent); font-weight: 700; font-size: 14px; margin-bottom: 6px; }
    .value-item p { color: var(--muted); font-size: 14px; }

    .split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
    .media-frame {
      border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); position: relative;
    }
    .media-frame img { width: 100%; height: 420px; object-fit: cover; }
    .media-caption {
      position: absolute; left: 16px; right: 16px; bottom: 16px;
      background: rgba(255,255,255,.92); border-radius: 10px; padding: 12px 14px; font-size: 13px;
    }
    .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 28px; }
    .step {
      background: var(--bg); border-radius: 12px; padding: 14px; border: 1px solid var(--line);
    }
    .step b { display: block; color: var(--primary); font-size: 12px; margin-bottom: 4px; }
    .step span { font-size: 14px; font-weight: 600; }

    .scene-stage { display: grid; grid-template-columns: 280px 1fr; gap: 24px; min-height: 460px; }
    .scene-tabs { display: flex; flex-direction: column; gap: 8px; }
    .scene-tab {
      text-align: left; background: #fff; border: 1px solid var(--line); border-radius: 12px;
      padding: 16px 16px 16px 18px; min-height: 72px; box-shadow: none; color: var(--ink);
      border-left: 4px solid transparent;
    }
    .scene-tab.is-active, .scene-tab:hover {
      border-left-color: var(--primary); box-shadow: var(--shadow); background: #fff;
    }
    .scene-tab small { display: block; color: var(--muted); font-size: 13px; }
    .scene-view { position: relative; border-radius: var(--radius); overflow: hidden; min-height: 460px; box-shadow: var(--shadow); }
    .scene-view img { width: 100%; height: 100%; min-height: 460px; object-fit: cover; }
    .scene-info {
      position: absolute; left: 20px; right: 20px; bottom: 20px;
      background: rgba(255,255,255,.93); border-radius: 12px; padding: 18px 20px;
    }
    .scene-info h3 { font-size: 20px; margin-bottom: 6px; }
    .scene-info p { color: var(--muted); font-size: 14px; }

    .card-grid-6 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .adv-card {
      background: #fff; border-radius: var(--radius); box-shadow: var(--shadow);
      padding: 32px 28px; transition: transform .2s ease, box-shadow .2s ease;
    }
    .adv-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
    .adv-icon {
      width: 48px; height: 48px; border-radius: 12px; background: var(--primary-light);
      display: grid; place-items: center; margin-bottom: 16px; color: var(--primary);
    }
    .adv-card h3 { font-size: 20px; margin-bottom: 8px; }
    .adv-card p { color: var(--muted); font-size: 14px; }

    .sol-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .sol-card {
      background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden;
      display: flex; flex-direction: column; transition: transform .2s ease, box-shadow .2s ease;
    }
    .sol-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
    .sol-card img { height: 190px; width: 100%; object-fit: cover; }
    .sol-body { padding: 22px 22px 8px; flex: 1; }
    .sol-body h3 { font-size: 20px; margin: 8px 0; }
    .sol-body p, .sol-meta { color: var(--muted); font-size: 14px; }
    .param-list { margin: 12px 0; display: grid; gap: 6px; }
    .param-list li { font-size: 14px; color: var(--ink); padding-left: 14px; position: relative; }
    .param-list li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); position: absolute; left: 0; top: 9px; }
    .sol-bar { display: flex; justify-content: space-between; align-items: center; padding: 16px 22px 20px; border-top: 1px solid var(--line); }

    #cases { background: var(--ink); color: #E8EEF2; padding: 108px 0; overflow: hidden; }
    #cases::before {
      content: ""; position: absolute; inset: 0; opacity: .07; pointer-events: none;
      background:
        linear-gradient(90deg, #fff 1px, transparent 1px) 0 0 / 28px 28px,
        linear-gradient(#fff 1px, transparent 1px) 0 0 / 28px 28px;
    }
    #cases .kicker { color: #8FD0C8; }
    #cases h2 { color: #fff; }
    #cases .section-head p { color: #B7C4CD; }
    .case-layout { display: grid; grid-template-columns: 1.4fr .8fr; gap: 24px; }
    .case-main {
      background: linear-gradient(180deg, rgba(31,111,178,.22), rgba(15,28,36,.55));
      border: 1px solid rgba(255,255,255,.08); border-radius: var(--radius); overflow: hidden;
    }
    .case-main img { width: 100%; height: 240px; object-fit: cover; }
    .case-main-body { padding: 24px; }
    .case-main h3 { font-size: 22px; color: #fff; margin-bottom: 10px; }
    .case-nums { display: flex; flex-wrap: wrap; gap: 10px; margin: 16px 0; }
    .case-nums span { background: rgba(31,111,178,.35); border: 1px solid rgba(141,196,232,.25); border-radius: 999px; padding: 4px 12px; font-size: 13px; }
    .case-side { display: grid; gap: 16px; }
    .case-mini {
      background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.08);
      border-radius: 12px; padding: 20px;
    }
    .case-mini h3 { color: #fff; font-size: 18px; margin-bottom: 8px; }
    .case-mini p { color: #B7C4CD; font-size: 14px; }

    .story-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
    .story-card {
      display: grid; grid-template-columns: 168px 1fr; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden;
    }
    .story-card img { width: 100%; height: 100%; min-height: 220px; object-fit: cover; }
    .story-body { padding: 24px; }
    .story-body h3 { font-size: 20px; margin-bottom: 6px; }
    .role { color: var(--primary); font-size: 13px; font-weight: 700; margin-bottom: 10px; }
    .before-after { display: grid; gap: 8px; margin-top: 12px; }
    .before-after div { font-size: 14px; color: var(--muted); }
    .before-after b { color: var(--ink); }

    #stats { padding: 56px 0; background: var(--primary-light); }
    .stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
    .stat {
      text-align: left; background: #fff; border-radius: 12px; padding: 24px; box-shadow: var(--shadow);
    }
    .stat b {
      display: block; font-size: 36px; color: var(--primary); font-variant-numeric: tabular-nums; line-height: 1.1;
    }
    .stat b em { font-style: normal; color: var(--warm); font-size: 18px; margin-left: 4px; }
    .stat span { color: var(--muted); font-size: 14px; }

    .compare-wrap { overflow-x: auto; border-radius: var(--radius); box-shadow: var(--shadow); background: #fff; }
    table.compare { width: 100%; min-width: 720px; border-collapse: collapse; }
    .compare th, .compare td { padding: 16px 18px; text-align: left; border-bottom: 1px solid var(--line); font-size: 14px; }
    .compare thead th { background: var(--ink); color: #fff; font-weight: 600; }
    .compare thead th:last-child { background: var(--primary); }
    .compare tbody tr:hover td { background: #F8FBFE; }
    .compare td:last-child { color: var(--primary-dark); font-weight: 600; }

    .review-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
    .review {
      background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 28px 24px 24px; position: relative;
    }
    .review::before { content: "“"; position: absolute; top: 8px; left: 16px; font-size: 42px; color: var(--primary-light); font-family: Georgia, serif; }
    .review p { color: #3B4A53; font-size: 14px; min-height: 96px; }
    .review-who { margin-top: 16px; font-size: 13px; color: var(--muted); }
    .review-who strong { display: block; color: var(--ink); font-size: 14px; }

    .news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
    .news-card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; display: flex; flex-direction: column; }
    .news-card img { height: 150px; width: 100%; object-fit: cover; }
    .news-card div { padding: 16px 18px 18px; }
    .news-card time { font-size: 12px; color: var(--muted); }
    .news-card h3 { font-size: 16px; margin: 6px 0 8px; line-height: 1.45; }
    .news-card p { font-size: 13px; color: var(--muted); }
    .more-link { display: inline-flex; min-height: 44px; align-items: center; font-weight: 600; margin-top: 20px; }

    .config-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
    .point-list { display: grid; gap: 12px; margin-top: 16px; }
    .point-list li {
      background: #fff; border-radius: 12px; padding: 14px 16px; box-shadow: var(--shadow);
    }
    .point-list strong { display: block; margin-bottom: 4px; }
    .point-list span { color: var(--muted); font-size: 14px; }
    .flow { display: flex; gap: 8px; margin-top: 24px; flex-wrap: wrap; }
    .flow li {
      flex: 1; min-width: 110px; background: var(--primary); color: #fff; border-radius: 10px; padding: 12px; text-align: center; font-size: 14px; font-weight: 600;
    }
    .flow li span { display: block; font-size: 12px; font-weight: 400; opacity: .85; }

    .faq-list { display: grid; gap: 10px; }
    .faq-item { background: #fff; border-radius: 12px; box-shadow: var(--shadow); overflow: hidden; }
    .faq-item button {
      width: 100%; text-align: left; background: transparent; border: 0;
      min-height: 56px; padding: 16px 52px 16px 20px; font-weight: 650; position: relative; color: var(--ink);
    }
    .faq-item button::after {
      content: ""; position: absolute; right: 20px; top: 50%; width: 10px; height: 10px;
      border-right: 2px solid var(--primary); border-bottom: 2px solid var(--primary);
      transform: translateY(-70%) rotate(45deg); transition: transform .2s ease;
    }
    .faq-item.is-open button::after { transform: translateY(-20%) rotate(225deg); }
    .faq-item .faq-a { display: none; padding: 0 20px 18px; color: var(--muted); font-size: 15px; }
    .faq-item.is-open .faq-a { display: block; }

    .guarantee-row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
    .g-item {
      background: #fff; border: 1px solid #BFD8EC; border-radius: 12px; padding: 22px 16px; text-align: center;
    }
    .g-item svg { margin: 0 auto 10px; }
    .g-item h3 { font-size: 16px; margin-bottom: 6px; }
    .g-item p { font-size: 13px; color: var(--muted); }

    #contact { background: #F5F8FB; }
    .contact-box {
      display: grid; grid-template-columns: .9fr 1.1fr; gap: 40px;
      background: #fff; border-radius: 16px; box-shadow: var(--shadow); padding: 40px;
    }
    .contact-points li { margin: 10px 0; padding-left: 18px; position: relative; color: var(--muted); }
    .contact-points li::before { content: ""; width: 8px; height: 8px; background: var(--accent); border-radius: 50%; position: absolute; left: 0; top: 9px; }
    .side-phone { margin-top: 24px; padding: 16px; background: var(--primary-light); border-radius: 12px; }
    .side-phone a { font-size: 22px; font-weight: 700; color: var(--primary-dark); }
    .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; }
    .field label { font-weight: 600; font-size: 14px; }
    .field input, .field select, .field textarea {
      min-height: 44px; border: 1px solid #D5DEE6; border-radius: 8px; padding: 10px 12px; background: #FBFCFD;
      transition: border-color .2s ease, box-shadow .2s ease;
    }
    .field textarea { min-height: 110px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus {
      outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(31,111,178,.15);
    }
    .field .err { color: var(--danger); font-size: 12px; min-height: 16px; }
    .form-ok { display: none; margin-top: 12px; color: var(--accent); font-weight: 600; }
    .form-ok.is-show { display: block; }

    .site-footer {
      background: #1A262E; color: #C5D0D7; padding: 56px 0 108px;
    }
    .foot-grid { display: grid; grid-template-columns: 1.3fr 1fr 1.1fr 1fr; gap: 28px; }
    .site-footer h3 { color: #fff; font-size: 16px; margin-bottom: 12px; }
    .site-footer a { color: #C5D0D7; display: inline-flex; min-height: 36px; align-items: center; }
    .site-footer a:hover { color: #fff; }
    .foot-brand strong { color: #fff; font-size: 18px; display: block; }
    .foot-brand span { color: #8EC4E6; font-size: 13px; font-weight: 600; }
    .legal { margin-top: 28px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.08); font-size: 13px; color: #8A99A3; }

    .sticky-cta {
      position: fixed; left: 0; right: 0; bottom: 0; z-index: 80;
      background: rgba(255,255,255,.96); border-top: 1px solid var(--line);
      box-shadow: 0 -8px 24px rgba(31,111,178,.08); transition: opacity .25s ease, transform .25s ease;
    }
    .sticky-cta.is-dim { opacity: .42; }
    .sticky-cta .container {
      display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: var(--sticky-h);
    }
    .sticky-phone { font-weight: 700; color: var(--ink); }
    .sticky-phone span { display: block; font-size: 12px; color: var(--muted); font-weight: 500; }
    .sticky-actions { display: flex; gap: 8px; }

    @media (max-width: 1280px) {
      .hero-copy h1, .hero-copy .slide-title { font-size: 38px; }
    }
    @media (max-width: 1024px) {
      .section { padding: 80px 0; }
      .section-head h2, #cases h2 { font-size: 26px; }
      .nav-links { display: none; }
      .nav-toggle { display: inline-flex; align-items: center; margin-left: auto; }
      .nav-cta { display: none; }
      .split, .scene-stage, .case-layout, .story-grid, .config-layout, .contact-box, .foot-grid { grid-template-columns: 1fr; }
      .card-grid-6, .sol-grid, .review-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
      .stats-row, .guarantee-row { grid-template-columns: repeat(2, 1fr); }
      .story-card { grid-template-columns: 140px 1fr; }
      .hero-slider { min-height: 560px; }
      .value-strip { margin-top: 24px; }
    }
    @media (max-width: 768px) {
      .topbar-right .hide-sm, .topbar-left .hide-sm { display: none; }
      .hero-copy h1, .hero-copy .slide-title { font-size: 30px; }
      .hero-mask { background: linear-gradient(180deg, rgba(245,248,251,.94) 0%, rgba(245,248,251,.86) 62%, rgba(245,248,251,.35) 100%); align-items: flex-end; }
      .value-strip { grid-template-columns: 1fr; }
      .value-item + .value-item { border-left: 0; border-top: 1px solid var(--line); }
      .steps { grid-template-columns: 1fr 1fr; }
      .card-grid-6, .sol-grid, .review-grid, .news-grid, .stats-row, .guarantee-row { grid-template-columns: 1fr; }
      .form-grid { grid-template-columns: 1fr; }
      .contact-box { padding: 24px 18px; }
      .sticky-cta .container { padding: 8px 0; }
      .sticky-actions { width: 58%; }
      .sticky-actions .btn { flex: 1; }
      .hero-count { grid-template-columns: 1fr; }
    }
    @media (max-width: 520px) {
      .container { width: min(100% - 28px, var(--container)); }
      .section { padding: 56px 0; }
      .hero-slider, .scene-view, .scene-view img { min-height: 520px; }
      .hero-nav-btn { display: none; }
      .story-card { grid-template-columns: 1fr; }
      .story-card img { height: 180px; min-height: 0; }
      .media-frame img { height: 240px; }
      .logo-text strong { font-size: 16px; }
    }