/* roulang page: index */
:root {
      --brand: #2F6FA8;
      --brand-hover: #255A8A;
      --accent: #2C8B8B;
      --ink: #1C2B3A;
      --muted: #5B6B7C;
      --deep: #24394D;
      --deep-2: #1B2C3C;
      --bg: #F5F8FC;
      --card: #FFFFFF;
      --line: #E3EAF2;
      --line-strong: #CDD8E4;
      --ok: #2F7D57;
      --danger: #B42318;
      --radius-card: 10px;
      --radius-btn: 6px;
      --radius-img: 8px;
      --shadow: 0 8px 24px rgba(28, 43, 58, .06);
      --shadow-hover: 0 12px 28px rgba(28, 43, 58, .10);
      --container: 1200px;
      --nav-h: 64px;
      --space-xl: 88px;
      --space-lg: 72px;
      --space-md: 56px;
      --ease: 240ms ease;
      --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; }
    html, body { margin: 0; padding: 0; }
    body {
      font-family: var(--font);
      font-size: 16px;
      font-weight: 400;
      line-height: 1.75;
      color: var(--ink);
      background: var(--bg);
      overflow-x: hidden;
    }
    img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-img); }
    a { color: var(--brand); text-decoration: none; transition: color var(--ease), background var(--ease), transform var(--ease), box-shadow var(--ease); }
    a:hover { color: var(--brand-hover); }
    a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
      outline: 2px solid var(--brand);
      outline-offset: 2px;
    }
    button, input, select, textarea { font-family: inherit; font-size: 16px; }
    button { cursor: pointer; }
    h1, h2, h3, h4 { margin: 0 0 12px; color: var(--ink); font-weight: 700; line-height: 1.28; letter-spacing: .01em; }
    h1 { font-size: 40px; }
    h2 { font-size: 30px; }
    h3 { font-size: 20px; font-weight: 600; }
    p { margin: 0 0 14px; color: var(--muted); }
    ul { margin: 0; padding: 0; list-style: none; }
    .skip {
      position: absolute; left: -999px; top: 8px;
      background: var(--brand); color: #fff; padding: 10px 14px; border-radius: 6px; z-index: 1000;
    }
    .skip:focus { left: 12px; }
    .container { width: min(100% - 40px, var(--container)); margin: 0 auto; }
    .num { font-variant-numeric: tabular-nums; letter-spacing: -.02em; }
    .site-header { position: relative; z-index: 80; }
    .topbar {
      background: #EEF4FA;
      border-bottom: 1px solid var(--line);
      font-size: 13px;
      color: var(--muted);
    }
    .topbar-inner {
      min-height: 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }
    .brand-mini {
      display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 700;
    }
    .brand-mini small { font-weight: 400; color: var(--muted); margin-left: 8px; }
    .top-meta { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
    .top-meta a { color: var(--ink); }
    .top-meta a:hover { color: var(--brand); }
    .top-phone-mobile { display: none; }
    .mainnav {
      background: #fff;
      border-bottom: 1px solid var(--line);
    }
    .mainnav.is-sticky {
      position: sticky; top: 0; z-index: 90;
      box-shadow: 0 8px 20px rgba(28,43,58,.06);
    }
    .mainnav-inner {
      min-height: var(--nav-h);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }
    .logo {
      display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 700; font-size: 18px; flex-shrink: 0;
    }
    .logo-mark {
      width: 36px; height: 36px; border-radius: 8px;
      background: var(--brand); color: #fff; display: grid; place-items: center;
    }
    .logo-mark svg { width: 22px; height: 22px; fill: none; stroke: #fff; stroke-width: 1.8; }
    .nav-links { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
    .nav-links a {
      color: var(--ink); padding: 10px 12px; min-height: 44px; display: inline-flex; align-items: center;
      border-radius: 6px; font-size: 14px; font-weight: 500;
    }
    .nav-links a:hover, .nav-links a.is-active { color: var(--brand); background: #F0F6FB; }
    .nav-cta { display: flex; align-items: center; gap: 10px; }
    .menu-toggle {
      display: none; width: 44px; height: 44px; border: 1px solid var(--line); background: #fff; border-radius: 6px;
      align-items: center; justify-content: center; flex-direction: column; gap: 5px;
    }
    .menu-toggle span { width: 18px; height: 2px; background: var(--ink); display: block; }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 18px;
      border-radius: var(--radius-btn); font-weight: 600; border: 1px solid transparent; transition: all var(--ease);
      text-align: center; white-space: nowrap;
    }
    .btn-primary { background: var(--brand); color: #fff; }
    .btn-primary:hover { background: var(--brand-hover); color: #fff; transform: translateY(-2px); }
    .btn-ghost { background: #fff; color: var(--brand); border-color: var(--brand); }
    .btn-ghost:hover { background: #F0F6FB; color: var(--brand-hover); transform: translateY(-2px); }
    .btn-light { background: #F4F8FB; color: var(--deep); }
    .btn-light:hover { background: #fff; color: var(--brand); transform: translateY(-2px); }
    .btn-wide { min-width: 168px; }
    .nav-mask {
      position: fixed; inset: 0; background: rgba(28,43,58,.28); opacity: 0; pointer-events: none; transition: opacity var(--ease); z-index: 85;
    }
    .nav-mask.is-open { opacity: 1; pointer-events: auto; }
    .drawer {
      position: fixed; top: 0; right: -100%; width: min(88vw, 360px); height: 100%; background: #fff; z-index: 95;
      box-shadow: -12px 0 30px rgba(28,43,58,.12); transition: right 260ms ease; padding: 20px;
      display: flex; flex-direction: column; gap: 8px;
    }
    .drawer.is-open { right: 0; }
    .drawer a {
      min-height: 48px; display: flex; align-items: center; padding: 0 12px; border-radius: 8px; color: var(--ink); font-weight: 600;
    }
    .drawer a.is-active, .drawer a:hover { background: #F0F6FB; color: var(--brand); }
    .drawer-close {
      align-self: flex-end; width: 44px; height: 44px; border: 1px solid var(--line); background: #fff; border-radius: 6px;
    }
    .hero { padding: 0; background: #DCE7F2; }
    .hero-slider { position: relative; min-height: 560px; overflow: hidden; }
    .slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity 280ms ease, visibility 280ms ease; }
    .slide.is-active { opacity: 1; visibility: visible; position: relative; }
    .slide img {
      width: 100%; height: 560px; object-fit: cover; border-radius: 0; filter: saturate(.92) contrast(1.02);
    }
    .slide-overlay {
      position: absolute; inset: 0;
      background: linear-gradient(90deg, rgba(245,248,252,.94) 0%, rgba(245,248,252,.82) 46%, rgba(245,248,252,.28) 100%);
    }
    .slide-copy {
      position: absolute; inset: 0; display: flex; align-items: center;
    }
    .kicker {
      display: inline-flex; align-items: center; gap: 8px; color: var(--brand); font-weight: 700; font-size: 13px; letter-spacing: .08em;
      text-transform: none; margin-bottom: 12px;
    }
    .hero-heading { font-size: 40px; max-width: 680px; margin-bottom: 14px; }
    .hero-lead { max-width: 640px; font-size: 16px; color: #3E5163; margin-bottom: 22px; }
    .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 22px; }
    .hero-badges { display: flex; gap: 10px; flex-wrap: wrap; }
    .badge {
      display: inline-flex; align-items: center; min-height: 34px; padding: 0 12px; border-radius: 6px;
      background: rgba(44,139,139,.10); color: var(--accent); font-size: 13px; font-weight: 700;
    }
    .badge-blue { background: rgba(47,111,168,.10); color: var(--brand); }
    .badge-ink { background: #fff; color: var(--ink); border: 1px solid var(--line); }
    .slider-nav, .slider-dots { position: absolute; z-index: 3; }
    .slider-nav { top: 50%; transform: translateY(-50%); display: flex; width: calc(100% - 32px); left: 16px; justify-content: space-between; pointer-events: none; }
    .slider-btn {
      pointer-events: auto; width: 44px; height: 44px; border-radius: 6px; border: 1px solid var(--line-strong);
      background: rgba(255,255,255,.92); color: var(--ink); font-size: 20px;
    }
    .slider-btn:hover { background: #fff; color: var(--brand); }
    .slider-dots { left: 50%; bottom: 18px; transform: translateX(-50%); display: flex; gap: 8px; }
    .slider-dots button {
      width: 44px; height: 44px; border: 0; background: transparent; display: grid; place-items: center;
    }
    .slider-dots span { width: 10px; height: 10px; border-radius: 50%; background: #C5D3E2; display: block; }
    .slider-dots button.is-active span, .slider-dots button:hover span { background: var(--brand); }
    section { padding: var(--space-xl) 0; }
    .sec-white { background: #fff; }
    .sec-soft { background: var(--bg); }
    .sec-head { max-width: 760px; margin-bottom: 36px; }
    .sec-head p { max-width: 680px; }
    .grid-75 { display: grid; grid-template-columns: 1.18fr .82fr; gap: 48px; align-items: center; }
    .param-row { display: flex; gap: 10px; flex-wrap: wrap; margin: 18px 0 8px; }
    .spec-list { margin-top: 12px; }
    .spec-list li {
      position: relative; padding-left: 16px; margin-bottom: 8px; color: var(--muted);
    }
    .spec-list li::before {
      content: ""; position: absolute; left: 0; top: 10px; width: 7px; height: 7px; background: var(--accent); border-radius: 1px;
    }
    .media-frame { position: relative; }
    .media-frame img { width: 100%; height: 430px; object-fit: cover; box-shadow: var(--shadow); }
    .media-caption {
      position: absolute; left: 14px; bottom: 14px; background: rgba(255,255,255,.94); padding: 8px 12px; border-radius: 6px; font-size: 13px; color: var(--ink);
    }
    .pain-board { display: grid; grid-template-columns: 1.2fr 1fr 1fr; grid-template-rows: auto auto; gap: 16px; }
    .pain-card {
      background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-card); padding: 24px;
      box-shadow: var(--shadow); min-height: 210px;
    }
    .pain-card.wide { grid-row: span 2; background:
      linear-gradient(180deg, rgba(255,255,255,.88), rgba(255,255,255,.92)),
      url("/assets/images/0deb76754b5c64d3.webp") center/cover;
    }
    .pain-card h3 { margin-bottom: 8px; }
    .symptom { color: var(--ink); font-weight: 600; margin-bottom: 8px; }
    .arch {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-bottom: 28px; background: #fff;
      border: 1px solid var(--line); border-radius: 10px; overflow: hidden;
    }
    .arch-item {
      padding: 22px 18px; text-align: left; position: relative;
    }
    .arch-item + .arch-item::before {
      content: ""; position: absolute; left: 0; top: 28%; height: 44%; width: 1px;
      background: repeating-linear-gradient(to bottom, var(--accent) 0 8px, transparent 8px 12px);
    }
    .arch-item strong { display: block; color: var(--accent); font-size: 13px; margin-bottom: 6px; }
    .scheme-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .scheme-card {
      display: block; background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 22px; color: inherit;
      box-shadow: var(--shadow); min-height: 168px;
    }
    .scheme-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); color: inherit; }
    .scheme-card h3 { color: var(--ink); }
    .timeline {
      display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; position: relative;
    }
    .timeline::before {
      content: ""; position: absolute; left: 4%; right: 4%; top: 18px; height: 2px; background: var(--line-strong);
    }
    .step {
      background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 22px 18px 18px; box-shadow: var(--shadow); position: relative;
    }
    .step-index {
      display: inline-flex; min-width: 36px; height: 28px; align-items: center; justify-content: center;
      background: var(--accent); color: #fff; font-size: 12px; font-weight: 700; border-radius: 4px; margin-bottom: 10px;
    }
    .step ul li { color: var(--muted); font-size: 14px; line-height: 1.6; margin-bottom: 4px; }
    .output { margin-top: 10px; font-size: 13px; color: var(--brand); font-weight: 600; }
    .ability-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .ability-card {
      background: #fff; border-radius: 10px; box-shadow: var(--shadow); padding: 22px; border: 1px solid transparent; transition: all var(--ease);
    }
    .ability-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
    .ability-icon {
      width: 44px; height: 44px; border-radius: 8px; background: #EEF6F6; color: var(--accent);
      display: grid; place-items: center; margin-bottom: 12px;
    }
    .ability-icon svg { width: 24px; height: 24px; stroke: currentColor; fill: none; stroke-width: 1.7; }
    .verify {
      margin-top: 12px; padding-top: 10px; border-top: 1px dashed var(--line); font-size: 13px; color: var(--ok); font-weight: 600;
    }
    .product-stage { display: grid; grid-template-columns: 1.35fr .9fr; gap: 16px; }
    .product-side { display: grid; gap: 16px; }
    .product-card {
      background: #fff; border-radius: 10px; overflow: hidden; box-shadow: var(--shadow); display: flex; flex-direction: column;
    }
    .product-card img { width: 100%; height: 210px; object-fit: cover; border-radius: 0; }
    .product-card.main img { height: 280px; }
    .product-body { padding: 20px 22px 22px; }
    .bars { display: grid; gap: 8px; margin: 12px 0 16px; }
    .bar { display: flex; justify-content: space-between; gap: 12px; background: var(--bg); border-radius: 6px; padding: 8px 12px; font-size: 14px; }
    .bar b { color: var(--ink); font-weight: 700; }
    .dark {
      background: var(--deep); color: #E7EEF5; padding: 0; position: relative; overflow: hidden;
    }
    .dark-bg {
      position: absolute; inset: 0; background:
        linear-gradient(90deg, rgba(36,57,77,.92), rgba(36,57,77,.86)),
        url("/assets/images/e3b8b377ecbd5c8c.jpg") center/cover;
    }
    .dark .container { position: relative; z-index: 1; padding: var(--space-xl) 0; }
    .dark-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 36px; align-items: stretch; }
    .dark h2, .dark p, .dark h3 { color: #F4F8FC; }
    .dark p { color: #C9D6E3; }
    .idea { font-size: 28px; line-height: 1.4; font-weight: 700; max-width: 420px; }
    .case-slice {
      background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12); border-radius: 10px; padding: 20px; margin-bottom: 14px;
    }
    .case-slice span { color: #9ED0D0; font-size: 13px; font-weight: 700; }
    .result-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
    .result-item { background: #fff; border-radius: 10px; box-shadow: var(--shadow); padding: 24px 20px; }
    .result-item .num { font-size: 36px; font-weight: 700; color: var(--accent); line-height: 1.1; }
    .unit { font-size: 14px; color: var(--brand); font-weight: 700; margin-left: 4px; }
    .story { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: center; margin-bottom: 42px; }
    .story.reverse { direction: rtl; }
    .story.reverse > * { direction: ltr; }
    .story img { width: 100%; height: 320px; object-fit: cover; box-shadow: var(--shadow); }
    .quotes { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .quote {
      background: #fff; border-radius: 10px; box-shadow: var(--shadow); padding: 22px; border-left: 3px solid var(--brand);
    }
    .quote:nth-child(2) { margin-top: 28px; }
    .quote:nth-child(3) { margin-top: -12px; }
    .quote p { color: var(--ink); }
    .who { font-size: 13px; color: var(--accent); font-weight: 700; margin-bottom: 8px; }
    .scene-wrap { display: grid; grid-template-columns: .7fr 1.3fr; gap: 28px; }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; align-content: flex-start; }
    .tag {
      min-height: 44px; padding: 0 14px; border-radius: 6px; border: 1px solid var(--line); background: #fff; color: var(--ink); font-weight: 600;
    }
    .tag.is-on, .tag:hover { background: var(--brand); color: #fff; border-color: var(--brand); }
    .scene-list { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .scene-item { background: #fff; border-radius: 10px; box-shadow: var(--shadow); padding: 18px 18px 16px; }
    .news-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .news-card { background: #fff; border-radius: 10px; box-shadow: var(--shadow); overflow: hidden; display: grid; grid-template-columns: 180px 1fr; }
    .news-card img { width: 180px; height: 100%; object-fit: cover; border-radius: 0; min-height: 148px; }
    .news-body { padding: 16px 18px; }
    .meta { font-size: 12px; color: var(--muted); display: flex; gap: 10px; margin-bottom: 6px; }
    .news-more { margin-top: 22px; }
    .metric-bar {
      display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; background: #fff; border: 1px solid var(--line); border-radius: 10px; overflow: hidden;
    }
    .metric { padding: 28px 18px; text-align: left; }
    .metric + .metric { border-left: 1px solid var(--line); }
    .metric .num { font-size: 32px; font-weight: 700; color: var(--accent); }
    .faq-list { display: grid; gap: 10px; }
    .faq-item { background: #fff; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
    .faq-q {
      width: 100%; text-align: left; background: #fff; border: 0; min-height: 56px; padding: 14px 18px; font-weight: 700; color: var(--ink);
      display: flex; justify-content: space-between; align-items: center; gap: 12px;
    }
    .faq-q::after { content: "+"; color: var(--brand); font-size: 20px; }
    .faq-item.is-open .faq-q::after { content: "–"; }
    .faq-a { display: none; padding: 0 18px 16px; background: #F8FBFE; border-top: 1px solid var(--line); color: var(--muted); }
    .faq-item.is-open .faq-a { display: block; }
    .cta-box { display: grid; grid-template-columns: 1.1fr .9fr; gap: 36px; align-items: start; }
    form {
      background: #fff; border-radius: 10px; box-shadow: var(--shadow); padding: 24px; display: grid; gap: 12px;
    }
    label { font-size: 14px; font-weight: 600; color: var(--ink); }
    input, select, textarea {
      width: 100%; border: 1px solid var(--line-strong); border-radius: 6px; min-height: 44px; padding: 10px 12px; background: #fff; color: var(--ink);
    }
    textarea { min-height: 110px; resize: vertical; }
    .form-note { font-size: 13px; color: var(--muted); min-height: 20px; }
    .form-note.ok { color: var(--ok); }
    .form-note.err { color: var(--danger); }
    .aside-contact { background: #fff; border-radius: 10px; box-shadow: var(--shadow); padding: 24px; }
    .aside-contact li { padding: 10px 0; border-bottom: 1px solid var(--line); color: var(--muted); }
    .aside-contact strong { display: block; color: var(--ink); }
    .site-footer { background: #1C2B3A; color: #C5D0DA; padding: 56px 0 24px; }
    .footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1.2fr .9fr; gap: 28px; margin-bottom: 28px; }
    .site-footer h3 { color: #fff; font-size: 16px; }
    .site-footer a { color: #D5DEE7; }
    .site-footer a:hover { color: #fff; }
    .site-footer p { color: #AEB8C3; }
    .copy { border-top: 1px solid rgba(255,255,255,.08); padding-top: 16px; font-size: 13px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
    .copy a { color: #9ED0D0; }
    @media (max-width: 1200px) {
      h1, .hero-heading { font-size: 34px; }
      .pain-board { grid-template-columns: 1fr 1fr; }
      .pain-card.wide { grid-row: auto; }
      .metric-bar { grid-template-columns: repeat(3, 1fr); }
      .metric:nth-child(4), .metric:nth-child(5) { border-left: 0; }
    }
    @media (max-width: 992px) {
      :root { --space-xl: 72px; }
      .grid-75, .dark-grid, .story, .scene-wrap, .cta-box, .product-stage, .footer-grid { grid-template-columns: 1fr; }
      .story.reverse { direction: ltr; }
      .ability-grid, .result-grid, .scheme-grid, .news-grid { grid-template-columns: 1fr 1fr; }
      .timeline { grid-template-columns: 1fr 1fr; }
      .timeline::before { display: none; }
      .arch { grid-template-columns: 1fr 1fr; }
      .quotes { grid-template-columns: 1fr; }
      .quote:nth-child(2), .quote:nth-child(3) { margin-top: 0; }
      .news-card { grid-template-columns: 140px 1fr; }
      .nav-links { display: none; }
      .menu-toggle { display: inline-flex; }
      .hero-slider, .slide img { min-height: 520px; height: 520px; }
      .media-frame img, .story img { height: 300px; }
    }
    @media (max-width: 768px) {
      :root { --space-xl: 56px; }
      .container { width: min(100% - 28px, var(--container)); }
      .top-meta { display: none; }
      .top-phone-mobile { display: inline-flex; min-height: 36px; align-items: center; font-weight: 700; color: var(--brand); }
      h1, .hero-heading { font-size: 28px; }
      h2 { font-size: 24px; }
      .ability-grid, .result-grid, .scheme-grid, .news-grid, .scene-list, .arch, .timeline { grid-template-columns: 1fr; }
      .pain-board { grid-template-columns: 1fr; }
      .metric-bar { grid-template-columns: 1fr 1fr; }
      .metric + .metric { border-left: 0; border-top: 1px solid var(--line); }
      .news-card { grid-template-columns: 1fr; }
      .news-card img { width: 100%; height: 180px; }
      .hero-slider, .slide img { min-height: 580px; height: auto; }
      .slide img { height: 580px; }
      .slide-overlay { background: linear-gradient(180deg, rgba(245,248,252,.94) 18%, rgba(245,248,252,.78) 62%, rgba(245,248,252,.42) 100%); }
      .hero-actions .btn { width: 100%; }
      .product-card.main img, .product-card img { height: 200px; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 375px) {
      h1, .hero-heading { font-size: 24px; }
      .btn-wide { min-width: 0; width: 100%; }
      .footer-grid { grid-template-columns: 1fr; }
      .metric-bar { grid-template-columns: 1fr; }
      .bar { flex-direction: column; gap: 2px; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { transition: none !important; animation: none !important; }
    }

/* roulang page: index */
:root {
      --blue-600: #2B6CB0;
      --blue-700: #1F5A96;
      --blue-500: #3B82C4;
      --teal: #0F7A7A;
      --copper: #B56A32;
      --bg: #F6F9FC;
      --bg-alt: #EEF3F8;
      --bg-tint: #E7F0F8;
      --card: #FFFFFF;
      --dark: #24313F;
      --dark-2: #1B2630;
      --title: #1B2430;
      --text: #4A5568;
      --muted: #6B7785;
      --border: #D7E2EC;
      --border-strong: #C5D4E3;
      --success: #2F855A;
      --danger: #C53030;
      --white: #FFFFFF;
      --radius: 10px;
      --radius-sm: 8px;
      --shadow: 0 10px 28px rgba(43, 108, 176, 0.08);
      --shadow-hover: 0 16px 36px rgba(43, 108, 176, 0.14);
      --shadow-soft: 0 6px 18px rgba(27, 36, 48, 0.06);
      --container: 1160px;
      --header-h: 72px;
      --focus: 0 0 0 3px rgba(43, 108, 176, 0.4);
      --space: 24px;
      --font: "Noto Sans SC", "PingFang SC", "HarmonyOS Sans", "Microsoft YaHei", sans-serif;
      --mono: "SFMono-Regular", "Cascadia Mono", "Consolas", monospace;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    html, body { margin: 0; padding: 0; }
    body {
      font-family: var(--font);
      font-size: 16px;
      line-height: 1.75;
      color: var(--text);
      background: var(--bg);
      overflow-x: clip;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--blue-700); text-decoration: none; transition: color .2s ease, background .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease; }
    a:hover { color: var(--blue-600); }
    button, input, select, textarea { font-family: inherit; font-size: 16px; }
    button { cursor: pointer; border: 0; background: none; }
    h1, h2, h3, h4, p { margin: 0; }
    ul, ol, dl { margin: 0; padding: 0; }
    table { border-collapse: collapse; width: 100%; }
    :focus-visible { outline: 3px solid rgba(43, 108, 176, 0.55); outline-offset: 2px; }
    .skip-link {
      position: absolute; left: 16px; top: -48px; z-index: 400;
      background: var(--blue-700); color: #fff; padding: 10px 16px; border-radius: 8px;
    }
    .skip-link:focus { top: 12px; color: #fff; }
    .container { width: min(100% - 40px, var(--container)); margin-inline: auto; }
    .section { padding: 104px 0; position: relative; }
    .section-alt { background: var(--bg-alt); }
    .section-head { max-width: 760px; margin-bottom: 40px; }
    .section-head.wide { max-width: 880px; }
    .kicker {
      display: inline-flex; align-items: center; gap: 8px;
      color: var(--teal); font-size: 13px; font-weight: 700; letter-spacing: .08em;
      text-transform: none; margin-bottom: 12px;
    }
    .kicker::before { content: ""; width: 18px; height: 2px; background: var(--teal); }
    h1 { font-size: 40px; line-height: 1.2; font-weight: 700; color: var(--title); letter-spacing: -0.02em; }
    h2 { font-size: 28px; line-height: 1.3; font-weight: 700; color: var(--title); margin-bottom: 14px; }
    h3 { font-size: 19px; line-height: 1.4; font-weight: 700; color: var(--title); }
    .lead { font-size: 16px; line-height: 1.8; color: var(--text); }
    .muted { color: var(--muted); }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 46px; padding: 0 22px; border-radius: var(--radius-sm);
      font-weight: 700; letter-spacing: .02em; border: 1.5px solid transparent;
      transition: background .2s ease, transform .2s ease, box-shadow .2s ease, color .2s ease, border-color .2s ease;
    }
    .btn-primary { background: var(--blue-700); color: #fff; }
    .btn-primary:hover, .btn-primary:active { background: #184A7C; color: #fff; transform: translateY(-1px); box-shadow: var(--shadow); }
    .btn-ghost { background: transparent; color: var(--blue-700); border-color: var(--blue-600); }
    .btn-ghost:hover { background: rgba(43, 108, 176, 0.08); color: var(--blue-700); transform: translateY(-1px); }
    .btn-light { background: #fff; color: var(--blue-700); }
    .btn-light:hover { background: var(--bg-tint); color: var(--blue-700); }
    .btn-block { width: 100%; }
    .chip {
      display: inline-flex; align-items: center; gap: 6px;
      min-height: 28px; padding: 0 10px; border-radius: 999px;
      background: var(--bg-tint); color: var(--blue-700); font-size: 12px; font-weight: 700;
      border: 1px solid var(--border);
    }
    .chip-copper { background: rgba(181, 106, 50, 0.1); color: var(--copper); border-color: rgba(181, 106, 50, 0.25); }
    .chip-teal { background: rgba(15, 122, 122, 0.1); color: var(--teal); border-color: rgba(15, 122, 122, 0.22); }
    .badge {
      display: inline-flex; align-items: center; gap: 6px; min-height: 28px;
      padding: 0 10px; border-radius: 6px; background: #fff; border: 1px solid var(--border);
      color: var(--title); font-size: 12px; font-weight: 700;
    }
    .badge i { width: 7px; height: 7px; border-radius: 50%; background: var(--teal); display: inline-block; }
    .site-header { position: relative; z-index: 80; }
    .topbar {
      background: #E4EDF5; border-bottom: 1px solid var(--border);
      font-size: 13px; color: var(--muted);
    }
    .topbar-inner {
      min-height: 38px; display: flex; align-items: center; gap: 22px; flex-wrap: wrap;
    }
    .topbar a { color: var(--title); }
    .topbar a:hover { color: var(--blue-700); }
    .top-item { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
    .top-item svg { width: 14px; height: 14px; flex: none; }
    .topbar .badge { margin-left: auto; background: #F7FBFE; }
    .mainbar {
      position: sticky; top: 0; z-index: 90;
      background: #fff; border-bottom: 1px solid var(--border);
    }
    .mainbar-inner {
      min-height: var(--header-h); display: flex; align-items: center; gap: 20px;
    }
    .brand { display: flex; align-items: center; gap: 10px; color: var(--title); flex: none; }
    .brand:hover { color: var(--title); }
    .brand-mark {
      width: 40px; height: 40px; border-radius: 8px;
      background: var(--blue-700); color: #fff;
      display: grid; place-items: center;
    }
    .brand-mark svg { width: 24px; height: 24px; }
    .brand-text { display: flex; flex-direction: column; line-height: 1.15; }
    .brand-text strong { font-size: 16px; font-weight: 800; }
    .brand-text em { font-style: normal; font-size: 11px; color: var(--muted); font-weight: 600; letter-spacing: .12em; }
    .nav { margin-left: auto; }
    .nav ul { list-style: none; display: flex; align-items: center; gap: 4px; }
    .nav a {
      display: inline-flex; align-items: center; min-height: 44px; padding: 0 10px;
      color: var(--title); font-size: 14px; font-weight: 600; position: relative;
    }
    .nav a::after {
      content: ""; position: absolute; left: 10px; right: 10px; bottom: 8px; height: 2px;
      background: var(--blue-700); transform: scaleX(0); transform-origin: left; transition: transform .2s ease;
    }
    .nav a:hover, .nav a.is-active { color: var(--blue-700); }
    .nav a.is-active::after, .nav a:hover::after { transform: scaleX(1); }
    .header-cta { flex: none; }
    .menu-toggle {
      display: none; width: 44px; height: 44px; border-radius: 8px; border: 1px solid var(--border);
      align-items: center; justify-content: center; flex-direction: column; gap: 5px;
    }
    .menu-toggle span { width: 18px; height: 2px; background: var(--title); display: block; }
    .drawer-backdrop {
      position: fixed; inset: 0; background: rgba(27, 36, 48, 0.45); opacity: 0; pointer-events: none;
      transition: opacity .2s ease; z-index: 120;
    }
    .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: 130; transform: translateX(100%);
      transition: transform .25s ease; box-shadow: -12px 0 40px rgba(27, 36, 48, 0.12);
      padding: 20px; display: flex; flex-direction: column; gap: 12px;
    }
    .drawer.is-open { transform: translateX(0); }
    .drawer-head { display: flex; align-items: center; justify-content: space-between; }
    .drawer nav a {
      display: flex; align-items: center; min-height: 48px; padding: 0 12px;
      border-radius: 8px; color: var(--title); font-weight: 700;
    }
    .drawer nav a:hover, .drawer nav a.is-active { background: var(--bg-tint); color: var(--blue-700); }
    .icon-close { width: 44px; height: 44px; border-radius: 8px; border: 1px solid var(--border); }
    body.nav-open { overflow: hidden; }
    .hero { padding: 0 0 48px; }
    .hero-stage { position: relative; height: 320px; overflow: hidden; background: #1B2630; }
    .slides { height: 100%; }
    .slide {
      position: absolute; inset: 0; opacity: 0; transition: opacity .6s ease;
      pointer-events: none;
    }
    .slide.is-active { opacity: 1; pointer-events: auto; }
    .slide img { width: 100%; height: 100%; object-fit: cover; }
    .slide-mask {
      position: absolute; inset: 0;
      background: linear-gradient(180deg, rgba(27, 38, 48, 0.18) 0%, rgba(27, 38, 48, 0.42) 100%);
    }
    .slide-caption {
      position: absolute; left: max(20px, calc((100% - var(--container)) / 2));
      bottom: 28px; color: #fff; z-index: 2;
    }
    .slide-caption span {
      display: inline-block; background: rgba(27, 38, 48, 0.55);
      padding: 8px 12px; border-radius: 6px; font-size: 14px; font-weight: 700;
    }
    .carousel-btn {
      position: absolute; top: 50%; transform: translateY(-50%);
      width: 44px; height: 44px; border-radius: 50%; background: rgba(255,255,255,0.92);
      color: var(--title); z-index: 3; display: grid; place-items: center;
      box-shadow: var(--shadow-soft);
    }
    .carousel-btn:hover { background: #fff; }
    .carousel-prev { left: 16px; }
    .carousel-next { right: 16px; }
    .carousel-dots {
      position: absolute; left: 50%; bottom: 14px; transform: translateX(-50%);
      display: flex; gap: 8px; z-index: 3;
    }
    .carousel-dots button {
      width: 22px; height: 6px; border-radius: 99px; background: rgba(255,255,255,0.45);
    }
    .carousel-dots button.is-active { background: #fff; width: 28px; }
    .hero-profile {
      margin-top: -72px; position: relative; z-index: 5;
      background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
      box-shadow: var(--shadow); padding: 28px 28px 26px;
    }
    .profile-top { display: flex; align-items: flex-start; gap: 20px; }
    .avatar {
      width: 84px; height: 84px; border-radius: 12px; flex: none;
      background: var(--blue-700); color: #fff; display: grid; place-items: center;
      box-shadow: 0 8px 20px rgba(31, 90, 150, 0.25);
    }
    .avatar svg { width: 46px; height: 46px; }
    .profile-id { flex: 1; min-width: 0; }
    .profile-id .brand-line { font-size: 13px; font-weight: 700; color: var(--teal); margin-bottom: 6px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
    .stat-badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
    .stat-badge {
      min-width: 140px; background: var(--bg); border: 1px solid var(--border);
      border-radius: 8px; padding: 10px 12px;
    }
    .stat-badge b {
      display: block; font-family: var(--mono); font-size: 20px; font-weight: 700;
      color: var(--blue-700); line-height: 1.2;
    }
    .stat-badge span { font-size: 12px; color: var(--muted); }
    .wave {
      position: absolute; inset: auto 0 0 0; height: 90px; opacity: .05; pointer-events: none;
    }
    .grid-deco {
      position: absolute; inset: 0; pointer-events: none; opacity: .05;
      background-image: linear-gradient(to right, #2B6CB0 1px, transparent 1px), linear-gradient(to bottom, #2B6CB0 1px, transparent 1px);
      background-size: 42px 42px;
    }
    .pain-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 28px; align-items: stretch; }
    .issue-list { display: flex; flex-direction: column; gap: 12px; }
    .issue {
      display: grid; grid-template-columns: 88px 1fr; gap: 14px; align-items: start;
      background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
      padding: 16px 18px; box-shadow: var(--shadow-soft);
    }
    .issue-tag {
      font-size: 13px; font-weight: 800; color: var(--blue-700);
      background: var(--bg-tint); border-radius: 6px; padding: 6px 8px; text-align: center;
    }
    .issue h3 { margin-bottom: 4px; font-size: 17px; }
    .issue p { font-size: 14px; color: var(--muted); }
    .gap-panel {
      background: var(--dark); color: #D9E3EE; border-radius: var(--radius); padding: 26px;
      position: relative; overflow: hidden;
    }
    .gap-panel h3 { color: #fff; margin-bottom: 14px; }
    .gap-row {
      display: flex; justify-content: space-between; gap: 12px; align-items: baseline;
      padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.08); font-size: 14px;
    }
    .gap-row:last-child { border-bottom: 0; }
    .gap-row b { color: #F3C39A; font-family: var(--mono); font-weight: 700; }
    .split { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 36px; align-items: center; }
    .split.reverse { grid-template-columns: 0.95fr 1.05fr; }
    .copy p + p { margin-top: 14px; }
    .spec-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 8px; }
    .media-frame {
      border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
      border: 1px solid var(--border); background: #fff;
    }
    .media-frame img { width: 100%; height: 420px; object-fit: cover; }
    .mini-spec {
      display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 18px;
    }
    .mini-spec div {
      background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 12px;
    }
    .mini-spec dt { font-size: 12px; color: var(--muted); }
    .mini-spec dd { margin: 0; font-family: var(--mono); font-weight: 700; color: var(--title); font-size: 18px; }
    .timeline { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; position: relative; }
    .timeline::before {
      content: ""; position: absolute; left: 8%; right: 8%; top: 23px; height: 2px;
      background: linear-gradient(90deg, var(--blue-600), var(--teal)); opacity: .35;
    }
    .step {
      background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
      padding: 18px 16px 16px; box-shadow: var(--shadow); position: relative;
    }
    .step-num {
      width: 36px; height: 36px; border-radius: 50%; background: var(--blue-700); color: #fff;
      display: grid; place-items: center; font-weight: 800; font-size: 13px; margin-bottom: 12px;
    }
    .step h3 { font-size: 16px; margin-bottom: 8px; }
    .step ul { list-style: none; }
    .step li { font-size: 13px; color: var(--muted); padding-left: 12px; position: relative; margin-top: 4px; }
    .step li::before { content: ""; width: 5px; height: 5px; background: var(--teal); border-radius: 50%; position: absolute; left: 0; top: 9px; }
    .adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .adv-card {
      background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
      box-shadow: var(--shadow); padding: 22px; min-height: 220px;
      transition: transform .2s ease, box-shadow .2s ease;
    }
    .adv-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
    .adv-card.bar { border-top: 4px solid var(--blue-700); }
    .adv-card.list { background: linear-gradient(180deg, #fff 70%, #F4F8FC 100%); }
    .adv-no { font-family: var(--mono); font-size: 13px; font-weight: 800; color: var(--copper); margin-bottom: 8px; }
    .adv-card h3 { margin-bottom: 8px; }
    .adv-card p { font-size: 14px; color: var(--muted); margin-bottom: 14px; }
    .adv-card ul { list-style: none; margin: 0 0 14px; }
    .adv-card li { font-size: 13px; color: var(--text); padding: 4px 0 4px 14px; position: relative; }
    .adv-card li::before { content: "—"; position: absolute; left: 0; color: var(--teal); }
    .product-layout { display: grid; grid-template-columns: 1.25fr 0.75fr; gap: 18px; }
    .product-main {
      background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
      box-shadow: var(--shadow); overflow: hidden;
    }
    .product-main img { width: 100%; height: 280px; object-fit: cover; }
    .product-main .body { padding: 22px; }
    .param-table th, .param-table td { text-align: left; padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
    .param-table th { color: var(--muted); font-weight: 600; width: 38%; }
    .param-table td { color: var(--title); font-weight: 700; font-family: var(--mono); }
    .product-side { display: flex; flex-direction: column; gap: 18px; }
    .product-mini {
      background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
      box-shadow: var(--shadow); display: grid; grid-template-columns: 118px 1fr; overflow: hidden;
      min-height: 190px;
    }
    .product-mini img { width: 118px; height: 100%; object-fit: cover; }
    .product-mini .body { padding: 16px; }
    .product-mini h3 { margin-bottom: 8px; font-size: 17px; }
    .spec-list { list-style: none; font-size: 13px; color: var(--muted); }
    .spec-list li { display: flex; justify-content: space-between; gap: 8px; padding: 3px 0; }
    .spec-list b { color: var(--title); font-family: var(--mono); }
    .cases { background: var(--dark); color: #C9D4E0; overflow: hidden; }
    .cases h2, .cases h3 { color: #fff; }
    .cases .lead { color: #C9D4E0; }
    .case-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 28px; position: relative; z-index: 1; }
    .principle { display: flex; flex-direction: column; gap: 12px; }
    .principle li {
      list-style: none; background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
      border-radius: 8px; padding: 14px 16px; font-size: 15px;
    }
    .case-strip { display: flex; flex-direction: column; gap: 12px; }
    .case-item {
      background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
      border-radius: 10px; padding: 16px 18px;
    }
    .case-item .meta { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 6px; }
    .case-item .chip { background: rgba(15,122,122,0.18); color: #9FE3E0; border-color: rgba(159,227,224,0.2); }
    .kpi-bar {
      display: grid; grid-template-columns: repeat(4, 1fr); background: #fff;
      border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden;
    }
    .kpi {
      padding: 28px 20px; text-align: left; border-right: 1px solid var(--border);
    }
    .kpi:last-child { border-right: 0; }
    .kpi b {
      display: block; font-family: var(--mono); font-size: 32px; font-weight: 700;
      color: var(--blue-700); line-height: 1.15; margin-bottom: 6px;
    }
    .kpi span { color: var(--muted); font-size: 14px; }
    .story { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center; margin-top: 28px; }
    .story + .story { margin-top: 48px; }
    .story img { width: 100%; height: 320px; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow); }
    .story-copy h3 { margin: 10px 0 12px; font-size: 22px; }
    .quote-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
    .quote {
      background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
      box-shadow: var(--shadow); padding: 20px; min-height: 220px;
    }
    .person { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
    .gavatar {
      width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center;
      color: #fff; font-weight: 800; font-size: 14px;
    }
    .person small { display: block; color: var(--muted); font-size: 12px; }
    .quote p { font-size: 14px; }
    .audience-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .aud-card {
      background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
      box-shadow: var(--shadow); padding: 22px; display: grid; grid-template-columns: 1fr auto; gap: 12px;
    }
    .aud-card p { font-size: 14px; color: var(--muted); margin-top: 8px; }
    .bound { font-size: 12px; color: var(--copper); font-weight: 700; background: rgba(181,106,50,0.08); border-radius: 6px; padding: 6px 8px; align-self: start; }
    .scene-box { display: grid; grid-template-columns: 220px 1fr; gap: 18px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
    .scene-nav { background: var(--bg-alt); padding: 12px; display: flex; flex-direction: column; gap: 8px; }
    .scene-nav button {
      min-height: 48px; text-align: left; padding: 8px 12px; border-radius: 8px;
      font-weight: 700; color: var(--title);
    }
    .scene-nav button.is-active { background: #fff; color: var(--blue-700); box-shadow: var(--shadow-soft); }
    .scene-panel { display: none; padding: 24px; }
    .scene-panel.is-active { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 20px; align-items: center; }
    .scene-panel img { height: 220px; width: 100%; object-fit: cover; border-radius: 8px; }
    .scene-points { list-style: none; margin-top: 12px; }
    .scene-points li { padding: 6px 0 6px 14px; position: relative; font-size: 14px; }
    .scene-points li::before { content: ""; width: 6px; height: 6px; background: var(--teal); position: absolute; left: 0; top: 13px; border-radius: 50%; }
    .news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
    .news-card {
      background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
      box-shadow: var(--shadow); overflow: hidden; display: flex; flex-direction: column;
      transition: transform .2s ease, box-shadow .2s ease;
    }
    .news-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
    .news-card img { height: 150px; width: 100%; object-fit: cover; }
    .news-card .body { padding: 16px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
    .news-card time { font-size: 12px; color: var(--muted); }
    .news-card h3 { font-size: 16px; }
    .news-card p { font-size: 13px; color: var(--muted); }
    .news-more { margin-top: 22px; }
    .metric-board {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--border);
      border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
    }
    .metric {
      background: #fff; padding: 22px 18px; min-height: 150px;
    }
    .metric b {
      display: block; font-family: var(--mono); font-size: 26px; color: var(--teal); font-weight: 700; line-height: 1.2;
    }
    .metric em { font-style: normal; font-size: 12px; color: var(--copper); font-weight: 700; }
    .metric p { font-size: 13px; color: var(--muted); margin-top: 8px; }
    .faq-list { display: flex; flex-direction: column; gap: 10px; }
    .faq-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
    .faq-item.is-open { box-shadow: var(--shadow); border-left: 3px solid var(--blue-700); }
    .faq-item button {
      width: 100%; text-align: left; min-height: 56px; padding: 14px 18px;
      font-weight: 700; color: var(--title); display: flex; justify-content: space-between; gap: 12px; align-items: center;
    }
    .faq-item .icon { width: 22px; height: 22px; border-radius: 50%; border: 1px solid var(--border); display: grid; place-items: center; flex: none; color: var(--blue-700); }
    .faq-panel { display: none; padding: 0 18px 16px; color: var(--text); font-size: 14px; }
    .faq-item.is-open .faq-panel { display: block; }
    .faq-panel ul { margin: 8px 0 0 18px; }
    .cta-box {
      display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 28px;
      background: #EAF3FB; border: 1px solid var(--border); border-radius: 12px; padding: 32px;
    }
    .deliver { list-style: none; margin-top: 16px; }
    .deliver li {
      padding: 10px 0 10px 28px; position: relative; border-bottom: 1px dashed var(--border);
    }
    .deliver li::before {
      content: ""; width: 14px; height: 14px; border-radius: 4px; background: var(--blue-700);
      position: absolute; left: 0; top: 14px;
    }
    .contact-repeat { margin-top: 18px; display: flex; flex-direction: column; gap: 6px; font-weight: 700; color: var(--title); }
    .form {
      background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
      box-shadow: var(--shadow); padding: 22px;
    }
    .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(--title); }
    .req { color: var(--danger); }
    input, select, textarea {
      min-height: 44px; border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px;
      background: #fff; color: var(--title);
    }
    textarea { min-height: 96px; resize: vertical; }
    input:focus, select:focus, textarea:focus { border-color: var(--blue-600); box-shadow: var(--focus); outline: none; }
    .error { display: none; color: var(--danger); font-size: 12px; }
    .field.is-invalid input, .field.is-invalid select, .field.is-invalid textarea { border-color: var(--danger); }
    .field.is-invalid .error { display: block; }
    .form-success {
      display: none; background: rgba(47, 133, 90, 0.1); color: var(--success);
      border: 1px solid rgba(47,133,90,0.25); border-radius: 8px; padding: 12px 14px; margin-bottom: 12px; font-size: 14px;
    }
    .form-success.is-show { display: block; }
    .site-footer { background: #EEF2F6; border-top: 1px solid var(--border); padding: 48px 0 20px; }
    .footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1.1fr; gap: 28px; }
    .footer-brand strong { display: block; color: var(--title); font-size: 18px; margin-bottom: 8px; }
    .footer-brand p { font-size: 14px; color: var(--muted); }
    .site-footer h3 { font-size: 14px; margin-bottom: 10px; }
    .site-footer a { color: var(--text); display: inline-block; min-height: 32px; }
    .site-footer a:hover { color: var(--blue-700); }
    .footer-list { list-style: none; }
    .copybar {
      margin-top: 28px; padding-top: 16px; border-top: 1px solid var(--border);
      display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
      font-size: 13px; color: var(--muted);
    }
    @media (max-width: 1280px) {
      h1 { font-size: 36px; }
      .quote-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 1024px) {
      .section { padding: 72px 0; }
      .nav { display: none; }
      .header-cta { display: none; }
      .menu-toggle { display: inline-flex; margin-left: auto; }
      .pain-grid, .split, .split.reverse, .product-layout, .case-grid, .story, .cta-box, .scene-box, .scene-panel.is-active {
        grid-template-columns: 1fr;
      }
      .timeline { grid-template-columns: 1fr 1fr; }
      .timeline::before { display: none; }
      .adv-grid { grid-template-columns: 1fr 1fr; }
      .metric-board { grid-template-columns: 1fr 1fr; }
      .kpi-bar { grid-template-columns: 1fr 1fr; }
      .kpi { border-bottom: 1px solid var(--border); }
      .media-frame img, .product-main img, .story img { height: 280px; }
      .hero-stage { height: 260px; }
      .topbar .hide-md { display: none; }
    }
    @media (max-width: 768px) {
      .section { padding: 56px 0; }
      .container { width: min(100% - 28px, var(--container)); }
      h1 { font-size: 30px; }
      h2 { font-size: 24px; }
      .profile-top { flex-direction: column; }
      .hero-profile { padding: 20px; margin-top: -48px; }
      .issue { grid-template-columns: 1fr; }
      .adv-grid, .audience-grid, .quote-grid, .news-grid, .form-grid, .footer-grid, .timeline, .kpi-bar, .metric-board, .mini-spec {
        grid-template-columns: 1fr;
      }
      .product-mini { grid-template-columns: 1fr; }
      .product-mini img { width: 100%; height: 160px; }
      .carousel-btn { display: none; }
      .param-table thead { display: none; }
      .param-table tr { display: block; padding: 8px 0; border-bottom: 1px solid var(--border); }
      .param-table th, .param-table td { display: block; width: 100%; padding: 2px 0; border: 0; }
      .copybar { flex-direction: column; }
    }
    @media (max-width: 520px) {
      .section { padding: 48px 0; }
      h1 { font-size: 28px; }
      .stat-badge { min-width: calc(50% - 6px); flex: 1; }
      .btn { width: 100%; }
      .hero-actions { flex-direction: column; }
      .hero-stage { height: 210px; }
      .avatar { width: 68px; height: 68px; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { animation: none !important; transition: none !important; }
    }