/* roulang page: index */
:root {
      --blue: #1F5FA8;
      --blue-deep: #184A86;
      --blue-soft: #3D7CA8;
      --ink: #2A3340;
      --amber: #C9842A;
      --amber-soft: #E8C48A;
      --paper: #F3F6FA;
      --white: #FFFFFF;
      --line: #E2E8F0;
      --footer: #1B2430;
      --title: #152033;
      --text: #3A4656;
      --muted: #6B7787;
      --danger: #B42318;
      --radius: 14px;
      --radius-sm: 8px;
      --shadow: 0 8px 28px rgba(21, 48, 88, .08);
      --shadow-hover: 0 14px 36px rgba(21, 48, 88, .14);
      --container: 1220px;
      --nav-h: 72px;
      --ease: .22s ease;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    html.lock, body.lock { overflow: hidden; }
    body {
      margin: 0;
      font-family: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      font-size: 16px;
      line-height: 1.75;
      color: var(--text);
      background: var(--paper);
    }
    img { max-width: 100%; display: block; height: auto; }
    a { color: var(--blue); text-decoration: none; transition: color var(--ease); }
    a:hover { color: var(--blue-deep); }
    button, input, select, textarea { font-family: inherit; }
    button { cursor: pointer; }
    h1, h2, h3, h4 { color: var(--title); margin: 0 0 .6em; letter-spacing: .02em; }
    h1 { font-size: clamp(2.05rem, 3.2vw, 2.85rem); line-height: 1.22; font-weight: 700; }
    h2 { font-size: clamp(1.55rem, 2.2vw, 1.95rem); line-height: 1.3; font-weight: 700; }
    h3 { font-size: clamp(1.18rem, 1.4vw, 1.32rem); line-height: 1.4; font-weight: 600; }
    p { margin: 0 0 1em; }
    ul, ol { margin: 0; padding: 0; }
    .container { width: min(100% - 40px, var(--container)); margin: 0 auto; }
    .skip {
      position: absolute; left: -999px; top: 8px; background: var(--blue); color: #fff;
      padding: 8px 14px; z-index: 100; border-radius: 6px;
    }
    .skip:focus { left: 12px; }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 10px 22px; border-radius: var(--radius-sm);
      font-weight: 600; border: 1px solid transparent; transition: background var(--ease), border-color var(--ease), transform var(--ease), box-shadow var(--ease);
    }
    .btn:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
      outline: 2px solid var(--blue); outline-offset: 2px;
    }
    .btn-primary { background: var(--blue); color: #fff; }
    .btn-primary:hover { background: var(--blue-deep); color: #fff; }
    .btn-primary:active { transform: translateY(1px); }
    .btn-ghost { background: #fff; color: var(--blue); border-color: var(--blue); }
    .btn-ghost:hover { background: #eaf2fb; color: var(--blue-deep); }
    .btn-amber { background: transparent; color: #fff; border: 1px solid var(--amber); }
    .btn-amber:hover { background: rgba(201, 132, 42, .16); color: #fff; }
    .badge {
      display: inline-flex; align-items: center; gap: 6px;
      padding: 4px 10px; border-radius: 6px; font-size: 12px; font-weight: 600;
      background: rgba(201, 132, 42, .12); color: var(--amber); letter-spacing: .04em;
    }
    .badge-blue { background: rgba(31, 95, 168, .1); color: var(--blue); }
    .kicker {
      display: inline-flex; align-items: center; gap: 8px;
      color: var(--blue); font-weight: 600; font-size: 13px; letter-spacing: .12em;
      margin-bottom: 12px;
    }
    .kicker::before { content: ""; width: 22px; height: 2px; background: var(--blue); }
    .section { padding: 104px 0; position: relative; }
    .section-tight { padding: 72px 0; }
    .section h2 { margin-bottom: 12px; }
    .lead { max-width: 760px; color: var(--text); margin-bottom: 32px; }
    .muted { color: var(--muted); }
    .site-header { position: relative; z-index: 50; }
    .topbar {
      background: rgba(31, 95, 168, .07);
      border-bottom: 1px solid var(--line);
      font-size: 13px; color: var(--muted);
    }
    .topbar-inner {
      display: flex; align-items: center; justify-content: space-between;
      min-height: 40px; gap: 16px; flex-wrap: wrap;
    }
    .topbar a { color: var(--title); font-weight: 500; }
    .topbar a:hover { color: var(--blue); }
    .top-links { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; }
    .top-links .split { width: 1px; height: 12px; background: #c5d0dc; }
    .nav-wrap {
      background: #fff; border-bottom: 1px solid var(--line);
    }
    .nav-wrap.is-sticky {
      position: sticky; top: 0; box-shadow: 0 8px 20px rgba(21, 48, 88, .08); z-index: 60;
    }
    .nav-inner {
      display: flex; align-items: center; justify-content: space-between;
      min-height: var(--nav-h); gap: 20px;
    }
    .logo {
      display: flex; align-items: center; gap: 10px; color: var(--title); font-weight: 700; font-size: 18px;
      flex-shrink: 0;
    }
    .logo:hover { color: var(--title); }
    .logo-mark {
      width: 36px; height: 36px; border-radius: 10px;
      background: linear-gradient(180deg, #2c73c0, var(--blue));
      display: grid; place-items: center; box-shadow: inset 0 0 0 1px rgba(255,255,255,.2);
    }
    .menu { display: flex; align-items: center; gap: 4px; list-style: none; }
    .menu a {
      color: var(--title); font-weight: 500; font-size: 15px;
      padding: 8px 10px; position: relative; display: inline-flex;
    }
    .menu a::after {
      content: ""; position: absolute; left: 10px; right: 10px; bottom: 2px; height: 2px;
      background: var(--blue); transform: scaleX(0); transition: transform var(--ease);
    }
    .menu a:hover, .menu a.is-active { color: var(--blue); }
    .menu a.is-active::after, .menu a:hover::after { transform: scaleX(1); }
    .nav-cta { flex-shrink: 0; }
    .hamburger {
      display: none; width: 44px; height: 44px; border: 1px solid var(--line);
      background: #fff; border-radius: 8px; align-items: center; justify-content: center; flex-direction: column; gap: 5px;
    }
    .hamburger span { width: 18px; height: 2px; background: var(--title); display: block; }
    .drawer {
      display: none; position: fixed; inset: 0; background: rgba(21, 32, 51, .46); z-index: 80;
    }
    .drawer.open { display: block; }
    .drawer-panel {
      position: absolute; right: 0; top: 0; height: 100%; width: min(86vw, 360px);
      background: #fff; padding: 24px 22px; box-shadow: -12px 0 32px rgba(21,48,88,.16);
      overflow: auto;
    }
    .drawer-panel a { display: block; padding: 14px 4px; color: var(--title); font-weight: 600; border-bottom: 1px solid var(--line); }
    .hero { position: relative; min-height: 86vh; overflow: hidden; background: var(--ink); }
    .slides { position: absolute; inset: 0; }
    .slide {
      position: absolute; inset: 0; opacity: 0; transition: opacity .7s ease;
      background-size: cover; background-position: center;
    }
    .slide.is-on { opacity: 1; }
    .slide::after {
      content: ""; position: absolute; inset: auto 0 0 0; height: 42%;
      background: linear-gradient(180deg, transparent, rgba(16, 24, 36, .78));
    }
    .hero-grid {
      position: relative; z-index: 2; min-height: 86vh;
      display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(280px, .72fr);
      gap: 28px; align-items: end; padding: 120px 0 72px;
    }
    .hero-panel {
      background: rgba(21, 28, 40, .82); color: #fff; border: 1px solid rgba(255,255,255,.08);
      border-radius: 16px; padding: 32px 32px 28px; box-shadow: 0 18px 40px rgba(0,0,0,.22);
    }
    .hero-panel .kicker, .hero-panel .kicker::before { color: var(--amber-soft); background: var(--amber-soft); }
    .hero-panel .kicker { background: transparent; }
    .hero-panel .kicker::before { background: var(--amber); }
    .hero-panel h1 { color: #fff; margin-bottom: 14px; }
    .hero-panel p { color: rgba(255,255,255,.86); margin-bottom: 22px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .slide-tag {
      display: inline-block; margin-bottom: 10px; font-size: 13px; color: var(--amber-soft); font-weight: 600;
    }
    .rank-card {
      background: rgba(27, 36, 48, .88); border: 1px solid rgba(201, 132, 42, .35);
      border-radius: 16px; padding: 22px 20px; color: #fff;
      backdrop-filter: none;
    }
    .rank-card h3 { color: #fff; font-size: 1.05rem; margin-bottom: 14px; }
    .rank-list { list-style: none; }
    .rank-list li {
      display: grid; grid-template-columns: 36px 1fr auto; gap: 10px; align-items: center;
      padding: 10px 0; border-bottom: 1px dashed rgba(255,255,255,.12); font-size: 14px;
    }
    .rank-list li:last-child { border-bottom: 0; }
    .rank-no { color: var(--amber); font-variant-numeric: tabular-nums; font-weight: 700; }
    .hero-ctrl {
      position: absolute; z-index: 3; bottom: 28px; left: 50%; transform: translateX(-50%);
      display: flex; align-items: center; gap: 10px;
    }
    .hero-btn {
      width: 44px; height: 44px; border-radius: 50%; border: 1px solid rgba(255,255,255,.35);
      background: rgba(0,0,0,.28); color: #fff;
    }
    .hero-btn:hover { background: rgba(31, 95, 168, .9); }
    .dots { display: flex; gap: 8px; }
    .dots button {
      width: 10px; height: 10px; border-radius: 50%; border: 0; background: rgba(255,255,255,.4);
    }
    .dots button.is-on { background: var(--amber); }
    .count-strip {
      background: #fff; border-bottom: 1px solid var(--line); padding: 28px 0;
    }
    .count-box {
      display: grid; grid-template-columns: 1.2fr .8fr; gap: 24px; align-items: center;
      background: linear-gradient(90deg, #fff, #f7fafc); border: 1px solid var(--line);
      border-radius: var(--radius); padding: 22px 26px; box-shadow: var(--shadow);
    }
    .timer { display: flex; gap: 10px; }
    .timer span {
      min-width: 64px; background: var(--ink); color: #fff; border-radius: 10px;
      text-align: center; padding: 10px 8px; font-variant-numeric: tabular-nums;
    }
    .timer b { display: block; font-size: 22px; line-height: 1.2; color: var(--amber-soft); }
    .timer small { color: rgba(255,255,255,.7); font-size: 12px; }
    .hl-grid {
      display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 18px;
    }
    .hl-main, .hl-side {
      border-radius: var(--radius); overflow: hidden; min-height: 220px; position: relative; color: #fff;
      box-shadow: var(--shadow);
    }
    .hl-main { background: #1b2a3d center/cover no-repeat; }
    .hl-side { background: #fff; color: var(--title); border: 1px solid var(--line); padding: 22px; }
    .hl-main .inner { position: absolute; inset: auto 0 0; padding: 22px; background: linear-gradient(180deg, transparent, rgba(16,24,36,.78)); }
    .hl-side h3 { margin-bottom: 8px; }
    .corner {
      position: absolute; top: 14px; right: 14px; background: var(--amber); color: #fff;
      font-size: 12px; font-weight: 700; padding: 4px 8px; border-radius: 4px;
    }
    .split-media {
      display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center;
    }
    .media-frame {
      border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--line);
    }
    .check-list { list-style: none; display: grid; gap: 10px; margin: 18px 0 24px; }
    .check-list li {
      padding: 10px 12px 10px 14px; background: #fff; border: 1px solid var(--line); border-radius: 10px;
      border-left: 4px solid var(--blue);
    }
    .bento {
      display: grid; grid-template-columns: 1.25fr 1fr 1fr; grid-template-rows: auto auto; gap: 16px;
    }
    .tile {
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
      padding: 22px; box-shadow: var(--shadow); transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }
    .tile:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--blue); }
    .tile.big { grid-row: span 2; min-height: 100%; display: flex; flex-direction: column; justify-content: flex-end; color: #fff; position: relative; overflow: hidden; }
    .tile.big img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
    .tile.big .shade { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(16,24,36,.1), rgba(16,24,36,.78)); }
    .tile.big .copy { position: relative; z-index: 1; }
    .adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .adv-card {
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
      box-shadow: var(--shadow); padding: 22px 22px 20px 26px; position: relative;
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }
    .adv-card::before { content: ""; position: absolute; left: 0; top: 14px; bottom: 14px; width: 4px; background: var(--blue); border-radius: 4px; }
    .adv-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--blue); }
    .adv-num { color: var(--amber); font-weight: 700; font-variant-numeric: tabular-nums; font-size: 20px; }
    .product-stage { display: grid; grid-template-columns: 1.4fr .8fr; gap: 16px; }
    .product-side { display: grid; gap: 16px; }
    .prod {
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
      box-shadow: var(--shadow); display: grid; grid-template-columns: 1.1fr .9fr; min-height: 250px;
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }
    .prod:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--blue); }
    .prod.mini { min-height: 0; grid-template-columns: .9fr 1.1fr; }
    .prod img { width: 100%; height: 100%; object-fit: cover; }
    .prod-body { padding: 20px; }
    .compare {
      width: 100%; border-collapse: separate; border-spacing: 0; background: #fff;
      border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
      margin-top: 28px;
    }
    .compare th, .compare td { padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
    .compare th { background: #eef4fb; color: var(--title); font-weight: 600; }
    .compare tr:last-child td { border-bottom: 0; }
    .compare td.hot { background: rgba(31, 95, 168, .05); }
    .steps { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; counter-reset: step; }
    .step {
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 16px;
      box-shadow: var(--shadow); position: relative;
    }
    .step::before {
      counter-increment: step; content: counter(step, decimal-leading-zero);
      display: block; color: var(--blue); font-weight: 700; margin-bottom: 8px; font-variant-numeric: tabular-nums;
    }
    .step ul { margin-top: 8px; padding-left: 16px; color: var(--muted); font-size: 14px; }
    .dark-band {
      background: var(--ink); color: #d8dee6; padding: 96px 0; position: relative; overflow: hidden;
    }
    .dark-band::before {
      content: ""; position: absolute; inset: 0; background:
        linear-gradient(90deg, rgba(27,36,48,.88), rgba(27,36,48,.72)),
        url("/assets/images/eea7e439a2b0bc32.webp") center/cover;
      opacity: 1;
    }
    .dark-inner { position: relative; display: grid; grid-template-columns: 1.15fr .85fr; gap: 36px; align-items: center; }
    .quote {
      font-size: clamp(1.4rem, 2.4vw, 2rem); color: #fff; line-height: 1.45; font-weight: 700;
      border-left: 3px solid var(--amber); padding-left: 18px;
    }
    .scene { background: rgba(255,255,255,.04); border: 1px solid rgba(201,132,42,.35); border-radius: 14px; padding: 20px; }
    .scene + .scene { margin-top: 14px; }
    .scene h3 { color: #fff; }
    .mosaic { display: grid; grid-template-columns: 1.3fr 1fr 1fr; grid-template-rows: 240px 240px; gap: 14px; }
    .case {
      position: relative; overflow: hidden; border-radius: var(--radius); color: #fff; min-height: 220px;
      box-shadow: var(--shadow);
    }
    .case.wide { grid-column: 1 / 2; grid-row: 1 / 3; }
    .case img { width: 100%; height: 100%; object-fit: cover; }
    .case .cap {
      position: absolute; inset: auto 0 0; padding: 16px 18px;
      background: linear-gradient(180deg, transparent, rgba(16,24,36,.82));
    }
    .stories { display: grid; grid-template-columns: 1.2fr .9fr .9fr; gap: 16px; }
    .story {
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px;
      box-shadow: var(--shadow); display: grid; grid-template-columns: 72px 1fr; gap: 14px;
    }
    .story img { width: 72px; height: 72px; object-fit: cover; border-radius: 12px; }
    .stats {
      background: rgba(31, 95, 168, .08); padding: 42px 0; border-block: 1px solid var(--line);
    }
    .stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
    .stat b {
      display: block; font-size: 34px; color: var(--amber); font-variant-numeric: tabular-nums; line-height: 1.15;
    }
    .reviews { display: grid; grid-template-columns: .9fr 1.2fr .9fr; gap: 16px; align-items: start; }
    .review {
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px;
      box-shadow: var(--shadow);
    }
    .review:nth-child(2) { transform: translateY(18px); }
    .stars { color: var(--amber); letter-spacing: 2px; font-size: 13px; margin-bottom: 8px; }
    .news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
    .news {
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
      box-shadow: var(--shadow); display: flex; flex-direction: column;
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }
    .news:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--blue); }
    .news img { height: 150px; width: 100%; object-fit: cover; }
    .news-body { padding: 16px 16px 18px; }
    .news h3 {
      display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; min-height: 2.7em;
    }
    .partners { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
    .partner {
      background: #fff; border: 1px dashed var(--line); border-radius: 12px; min-height: 84px;
      display: grid; place-items: center; color: #8a94a1; font-weight: 700; letter-spacing: .08em; filter: grayscale(1);
    }
    .faq-item { background: #fff; border: 1px solid var(--line); border-radius: 12px; margin-bottom: 10px; overflow: hidden; }
    .faq-item button {
      width: 100%; text-align: left; background: #fff; border: 0; min-height: 60px;
      padding: 0 18px; font-weight: 600; color: var(--title); display: flex; justify-content: space-between; align-items: center;
    }
    .faq-item .ans { display: none; background: #f7f9fc; padding: 0 18px 16px; color: var(--text); }
    .faq-item.open .ans { display: block; }
    .faq-item .sign { color: var(--blue); font-size: 22px; font-weight: 400; }
    .guard {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
    }
    .guard a, .guard .g {
      background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 18px;
      box-shadow: var(--shadow); color: var(--title); display: block;
    }
    .guard a:hover { border-color: var(--blue); }
    .contact-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 28px; }
    .form-card, .info-card {
      background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 26px;
      box-shadow: var(--shadow);
    }
    label { display: block; font-weight: 600; color: var(--title); margin: 12px 0 6px; }
    input, select, textarea {
      width: 100%; border: 1px solid var(--line); border-radius: 8px; min-height: 44px;
      padding: 8px 12px; background: #fff; color: var(--title);
    }
    textarea { min-height: 96px; resize: vertical; }
    input.is-err, select.is-err, textarea.is-err { border-color: var(--danger); }
    .err { color: var(--danger); font-size: 13px; display: none; }
    .form-note { font-size: 13px; color: var(--muted); margin-top: 10px; }
    .ok-msg { display: none; background: #eaf6ee; color: #1e6b3a; padding: 12px; border-radius: 8px; margin-bottom: 12px; }
    .site-footer { background: var(--footer); color: #c5ccd6; padding: 64px 0 24px; }
    .foot-grid { display: grid; grid-template-columns: 1.3fr .8fr .9fr .9fr; gap: 28px; }
    .site-footer a { color: #dce3ec; }
    .site-footer a:hover { color: #fff; }
    .site-footer h3 { color: #fff; font-size: 16px; }
    .foot-copy { border-top: 1px solid rgba(255,255,255,.08); margin-top: 32px; padding-top: 16px; font-size: 13px; color: #9aa4b2; }
    .lane {
      pointer-events: none; position: absolute; inset: 0; opacity: .05;
      background-image: repeating-linear-gradient(90deg, transparent, transparent 18px, #1F5FA8 18px, #1F5FA8 22px);
    }
    @media (max-width: 1280px) {
      .container { width: min(100% - 40px, 1080px); }
      .steps { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 1024px) {
      .section { padding: 80px 0; }
      .hero-grid, .split-media, .product-stage, .dark-inner, .contact-grid, .foot-grid, .count-box, .hl-grid, .stories, .stat-row, .news-grid, .guard, .bento, .adv-grid, .reviews, .mosaic {
        grid-template-columns: 1fr 1fr;
      }
      .bento .tile.big, .case.wide, .prod { grid-column: auto; grid-row: auto; }
      .mosaic { grid-template-rows: auto; }
      .menu { display: none; }
      .hamburger { display: inline-flex; }
      .nav-cta { display: none; }
      .prod, .prod.mini { grid-template-columns: 1fr; }
      .prod img, .prod.mini img { height: 180px; }
      .partners { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 768px) {
      .container { width: min(100% - 32px, 100%); }
      .section { padding: 64px 0; }
      .top-links .hide-sm { display: none; }
      .hero-grid, .split-media, .product-stage, .dark-inner, .contact-grid, .foot-grid, .count-box, .hl-grid, .stories, .stat-row, .news-grid, .guard, .bento, .adv-grid, .reviews, .mosaic, .partners, .steps {
        grid-template-columns: 1fr;
      }
      .hero { min-height: auto; }
      .hero-grid { min-height: auto; padding: 88px 0 84px; }
      .review:nth-child(2) { transform: none; }
      .timer span { min-width: 56px; }
      .compare { display: block; overflow-x: auto; }
    }
    @media (max-width: 520px) {
      .hero-actions .btn, .nav-inner { width: 100%; }
      .hero-panel, .rank-card { padding: 20px 16px; }
      h1 { font-size: 2.05rem; }
      .stat b { font-size: 28px; }
    }

/* roulang page: index */
:root {
      --blue: #1F5FA8;
      --blue-dark: #184A84;
      --blue-2: #3D7CA8;
      --ink: #2A3340;
      --amber: #C9842A;
      --amber-dark: #A66C20;
      --bg: #F3F6FA;
      --white: #FFFFFF;
      --line: #E2E8F0;
      --footer: #1B2430;
      --title: #152033;
      --text: #3A4656;
      --muted: #6B7787;
      --danger: #B42318;
      --radius: 14px;
      --radius-sm: 8px;
      --shadow: 0 8px 28px rgba(21, 48, 88, .08);
      --shadow-hover: 0 14px 36px rgba(21, 48, 88, .14);
      --space: 32px;
      --container: 1220px;
      --header-h: 72px;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      font-size: 16px;
      line-height: 1.75;
      color: var(--text);
      background: var(--bg);
      overflow-x: hidden;
    }
    body.nav-open { overflow: hidden; }
    img { max-width: 100%; display: block; height: auto; }
    a { color: var(--blue); text-decoration: none; transition: color .2s ease, background .2s ease, border-color .2s ease, transform .2s ease; }
    a:hover { color: var(--blue-dark); }
    button, input, select, textarea { font-family: inherit; font-size: 16px; }
    button { cursor: pointer; }
    h1, h2, h3, h4 { color: var(--title); margin: 0 0 12px; font-weight: 700; line-height: 1.25; }
    h1 { font-size: clamp(2.1rem, 4vw, 3rem); }
    h2 { font-size: clamp(1.75rem, 3vw, 2rem); }
    h2::after {
      content: "";
      display: block;
      width: 42px;
      height: 3px;
      background: var(--blue);
      margin: 14px 0 0;
      border-radius: 2px;
    }
    h3 { font-size: 1.28rem; }
    p { margin: 0 0 14px; }
    ul { margin: 0; padding: 0; list-style: none; }
    .skip {
      position: absolute; left: -999px; top: 8px; background: var(--blue); color: #fff; padding: 8px 14px; z-index: 1000; border-radius: 6px;
    }
    .skip:focus { left: 8px; }
    .container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }
    .muted { color: var(--muted); }
    .lead { max-width: 760px; color: var(--text); font-size: 16px; }
    .badge {
      display: inline-flex; align-items: center; gap: 6px;
      background: rgba(201, 132, 42, .12); color: var(--amber-dark);
      border: 1px solid rgba(201, 132, 42, .28);
      border-radius: 6px; padding: 4px 10px; font-size: 12px; font-weight: 600; letter-spacing: .04em;
    }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 10px 22px; border-radius: var(--radius-sm);
      font-weight: 600; border: 1px solid transparent; line-height: 1.2; text-align: center;
      transition: background .2s ease, border-color .2s ease, transform .2s ease, color .2s ease, box-shadow .2s ease;
    }
    .btn:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
      outline: 2px solid var(--blue); outline-offset: 2px;
    }
    .btn-primary { background: var(--blue); color: #fff; }
    .btn-primary:hover { background: var(--blue-dark); color: #fff; }
    .btn-primary:active { transform: translateY(1px); }
    .btn-ghost { background: #fff; color: var(--blue); border-color: var(--blue); }
    .btn-ghost:hover { background: rgba(31, 95, 168, .06); color: var(--blue-dark); }
    .btn-amber { background: transparent; color: #fff; border-color: var(--amber); }
    .btn-amber:hover { background: rgba(201, 132, 42, .16); color: #fff; }
    .topbar {
      background: rgba(31, 95, 168, .07); color: var(--text); font-size: 13px;
      border-bottom: 1px solid var(--line);
    }
    .topbar-inner {
      display: flex; align-items: center; justify-content: space-between; gap: 16px;
      min-height: 40px; flex-wrap: wrap; padding: 6px 0;
    }
    .topbar a { color: var(--blue); font-weight: 600; }
    .topbar-links { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; }
    .topbar-links a { position: relative; }
    .site-header {
      background: #fff; border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 80;
      transition: box-shadow .2s ease;
    }
    .site-header.is-stuck { box-shadow: 0 8px 20px rgba(21, 48, 88, .08); }
    .nav-main {
      display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: var(--header-h);
    }
    .logo {
      display: flex; align-items: center; gap: 10px; color: var(--title); font-weight: 700; font-size: 18px; flex-shrink: 0;
    }
    .logo:hover { color: var(--blue); }
    .logo-mark {
      width: 36px; height: 36px; border-radius: 8px; background: var(--blue); color: #fff;
      display: grid; place-items: center;
    }
    .menu { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
    .menu a {
      color: var(--title); font-weight: 500; font-size: 15px; padding: 8px 10px; position: relative;
    }
    .menu a:hover { color: var(--blue); }
    .menu a.active::after, .menu a:hover::after {
      content: ""; position: absolute; left: 10px; right: 10px; bottom: 2px; height: 2px; background: var(--blue);
    }
    .nav-cta { flex-shrink: 0; }
    .burger {
      display: none; width: 44px; height: 44px; border: 1px solid var(--line); background: #fff; border-radius: 8px;
      align-items: center; justify-content: center; flex-direction: column; gap: 5px;
    }
    .burger span { width: 18px; height: 2px; background: var(--title); display: block; }
    .drawer {
      position: fixed; inset: 0; background: rgba(21, 32, 51, .45); z-index: 90; opacity: 0; pointer-events: none; transition: opacity .2s ease;
    }
    .drawer.open { opacity: 1; pointer-events: auto; }
    .drawer-panel {
      position: absolute; right: 0; top: 0; bottom: 0; width: min(86vw, 360px); background: #fff;
      padding: 24px 20px; transform: translateX(100%); transition: transform .24s ease; overflow: auto;
    }
    .drawer.open .drawer-panel { transform: none; }
    .drawer-panel a { display: block; padding: 12px 8px; color: var(--title); border-bottom: 1px solid var(--line); font-weight: 600; }
    .hero { position: relative; min-height: 640px; color: #fff; overflow: hidden; }
    .hero-track { position: absolute; inset: 0; }
    .hero-slide {
      position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0;
      transition: opacity .6s ease;
    }
    .hero-slide.active { opacity: 1; }
    .hero-slide::after {
      content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 40%;
      background: linear-gradient(180deg, transparent, rgba(21, 32, 51, .72));
    }
    .hero-content {
      position: relative; z-index: 2; min-height: 640px; display: grid; grid-template-columns: 1.15fr .85fr;
      gap: 28px; align-items: end; padding: 90px 0 70px;
    }
    .hero-panel {
      background: var(--ink); color: #fff; padding: 32px 32px 28px; border-radius: var(--radius);
      box-shadow: var(--shadow); border-top: 3px solid var(--amber); position: relative;
    }
    .hero-panel .corner {
      position: absolute; right: 16px; top: 16px; background: var(--amber); color: #fff;
      font-size: 12px; font-weight: 700; padding: 4px 8px; border-radius: 4px;
    }
    .hero-panel h1 { color: #fff; margin-bottom: 14px; }
    .hero-panel p { color: rgba(255,255,255,.88); margin-bottom: 20px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .rank-card {
      background: rgba(255,255,255,.96); color: var(--text); border-radius: var(--radius); padding: 22px 20px;
      box-shadow: var(--shadow); border: 1px solid var(--line);
    }
    .rank-card h3 { font-size: 1.05rem; margin-bottom: 6px; }
    .rank-list li {
      display: grid; grid-template-columns: 28px 1fr auto; gap: 10px; align-items: center;
      padding: 10px 0; border-bottom: 1px dashed var(--line); font-size: 14px;
    }
    .rank-list li:last-child { border-bottom: 0; }
    .rank-num { color: var(--amber); font-weight: 700; font-variant-numeric: tabular-nums; }
    .rank-tag { color: var(--blue); font-size: 12px; font-weight: 600; }
    .hero-nav {
      position: absolute; z-index: 3; bottom: 22px; left: 50%; transform: translateX(-50%);
      display: flex; align-items: center; gap: 10px;
    }
    .hero-dot {
      width: 10px; height: 10px; border-radius: 50%; border: 0; background: rgba(255,255,255,.45);
    }
    .hero-dot.active { background: #fff; width: 22px; border-radius: 8px; }
    .hero-arrow {
      width: 44px; height: 44px; border-radius: 50%; border: 1px solid rgba(255,255,255,.4);
      background: rgba(21,32,51,.35); color: #fff; font-size: 18px;
    }
    .hero-arrow:hover { background: var(--blue); }
    section { padding: 96px 0; position: relative; }
    .sec-light { background: var(--bg); }
    .sec-white { background: #fff; }
    .sec-head { margin-bottom: 36px; }
    .sec-head .lead { margin-top: 10px; }
    .lane::before {
      content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .05;
      background-image: repeating-linear-gradient(90deg, transparent, transparent 28px, var(--ink) 28px, var(--ink) 36px);
    }
    .countdown {
      display: grid; grid-template-columns: 1.2fr .8fr; gap: 24px; align-items: stretch;
    }
    .count-box, .tier-box {
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 28px;
    }
    .timer { display: flex; gap: 12px; margin: 18px 0 8px; }
    .timer div {
      min-width: 72px; background: var(--ink); color: #fff; text-align: center; border-radius: 10px; padding: 12px 8px;
    }
    .timer strong { display: block; font-size: 28px; font-variant-numeric: tabular-nums; color: var(--amber); line-height: 1.1; }
    .timer span { font-size: 12px; color: rgba(255,255,255,.75); }
    .split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; }
    .split img { width: 100%; height: 420px; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--line); }
    .check-list li { padding: 8px 0 8px 18px; position: relative; border-bottom: 1px solid var(--line); }
    .check-list li::before { content: ""; width: 8px; height: 8px; background: var(--blue); border-radius: 50%; position: absolute; left: 0; top: 16px; }
    .pain { margin-top: 18px; }
    .pain li {
      display: grid; grid-template-columns: 36px 1fr; gap: 10px; padding: 10px 0; border-bottom: 1px dashed var(--line); font-size: 15px;
    }
    .pain b { color: var(--amber); font-variant-numeric: tabular-nums; }
    .bento {
      display: grid; grid-template-columns: 1.2fr 1fr 1fr; grid-template-rows: auto auto; gap: 16px;
    }
    .bento a.card, .card-link { color: inherit; }
    .card {
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
      padding: 22px; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--blue); }
    .bento .wide { grid-row: span 2; min-height: 280px; background-size: cover; background-position: center; color: #fff; position: relative; overflow: hidden; }
    .bento .wide::before { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(21,32,51,.15), rgba(21,32,51,.78)); }
    .bento .wide > * { position: relative; z-index: 1; }
    .bento .wide h3, .bento .wide p { color: #fff; }
    .adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .adv-card { display: grid; grid-template-columns: 4px 1fr; gap: 16px; padding: 0; overflow: hidden; }
    .adv-card .bar { background: var(--blue); }
    .adv-card .inner { padding: 20px 20px 20px 0; }
    .kpi { font-size: 22px; color: var(--amber); font-weight: 700; font-variant-numeric: tabular-nums; margin-bottom: 6px; }
    .hot-grid { display: grid; grid-template-columns: 1.4fr 1fr; grid-template-rows: auto auto; gap: 16px; }
    .hot-card { padding: 0; overflow: hidden; display: flex; flex-direction: column; }
    .hot-card.big { grid-row: span 2; }
    .hot-card img { width: 100%; height: 190px; object-fit: cover; }
    .hot-card.big img { height: 280px; }
    .hot-card .body { padding: 18px 18px 20px; }
    .hot-card p { font-size: 14px; }
    .compare { margin-top: 28px; overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
    table { width: 100%; border-collapse: collapse; min-width: 680px; }
    th, td { padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--line); font-size: 14px; }
    th { background: rgba(31,95,168,.08); color: var(--title); font-weight: 700; }
    tr:last-child td { border-bottom: 0; }
    .timeline { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; position: relative; }
    .step {
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow);
      min-height: 220px;
    }
    .step-index { color: var(--blue); font-weight: 700; font-size: 13px; margin-bottom: 8px; }
    .step ul { margin-top: 8px; }
    .step li { font-size: 13px; color: var(--muted); padding: 3px 0 3px 12px; position: relative; }
    .step li::before { content: "·"; position: absolute; left: 0; color: var(--blue); }
    .dark-sec { background: var(--ink); color: #e8edf3; padding: 96px 0; position: relative; overflow: hidden; }
    .dark-sec::after {
      content: ""; position: absolute; inset: 0; background: url("/assets/images/ca6242d19e24a04b.webp") center/cover no-repeat;
      opacity: .18;
    }
    .dark-wrap { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr .9fr; gap: 32px; }
    .dark-sec h2 { color: #fff; }
    .dark-sec h2::after { background: var(--amber); }
    .quote {
      font-size: 28px; line-height: 1.45; color: #fff; font-weight: 700; border-left: 3px solid var(--amber); padding-left: 18px;
    }
    .dark-points { display: grid; gap: 14px; }
    .dark-points article { background: rgba(255,255,255,.06); border: 1px solid rgba(201,132,42,.45); border-radius: 12px; padding: 18px; }
    .dark-points h3 { color: #fff; }
    .masonry { display: grid; grid-template-columns: 1.2fr 1fr 1fr; grid-template-rows: 240px 240px; gap: 14px; }
    .case {
      position: relative; overflow: hidden; border-radius: var(--radius); border: 1px solid var(--line); box-shadow: var(--shadow);
    }
    .case:first-child { grid-row: span 2; }
    .case img { width: 100%; height: 100%; object-fit: cover; }
    .case figcaption {
      position: absolute; left: 0; right: 0; bottom: 0; padding: 16px;
      background: linear-gradient(180deg, transparent, rgba(21,32,51,.82)); color: #fff;
    }
    .case h3 { color: #fff; font-size: 1.05rem; margin-bottom: 6px; }
    .case p { font-size: 13px; margin: 0; color: rgba(255,255,255,.9); }
    .story-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .story { display: grid; grid-template-columns: 86px 1fr; gap: 14px; align-items: start; }
    .story img { width: 86px; height: 86px; object-fit: cover; border-radius: 12px; }
    .story blockquote { margin: 0 0 10px; font-size: 14px; }
    .chips { display: flex; flex-wrap: wrap; gap: 6px; }
    .chip { background: rgba(31,95,168,.08); color: var(--blue); font-size: 12px; padding: 3px 8px; border-radius: 999px; font-weight: 600; }
    .stats {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
      background: rgba(31,95,168,.08); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 18px;
    }
    .stats strong { display: block; font-size: 32px; color: var(--amber); font-variant-numeric: tabular-nums; line-height: 1.1; }
    .stats span { font-size: 13px; color: var(--muted); }
    .review-grid { display: grid; grid-template-columns: 1fr 1.15fr 1fr; gap: 16px; align-items: start; }
    .review { padding: 20px; }
    .review:nth-child(2) { margin-top: 28px; }
    .stars { color: var(--amber); font-size: 12px; letter-spacing: 2px; margin-bottom: 8px; }
    .news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
    .news img { width: 100%; height: 140px; object-fit: cover; border-radius: 10px; margin-bottom: 10px; }
    .news time { color: var(--muted); font-size: 12px; }
    .news h3 { font-size: 1.05rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
    .news p { font-size: 14px; min-height: 72px; }
    .partners { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
    .partner {
      background: #fff; border: 1px solid var(--line); border-radius: 12px; min-height: 86px;
      display: grid; place-items: center; color: #8a93a0; font-weight: 700; letter-spacing: .12em; filter: grayscale(1);
    }
    .faq-item { background: #fff; border: 1px solid var(--line); border-radius: 12px; margin-bottom: 10px; overflow: hidden; }
    .faq-item button {
      width: 100%; text-align: left; background: #fff; border: 0; min-height: 60px; padding: 14px 52px 14px 18px;
      font-weight: 600; color: var(--title); position: relative;
    }
    .faq-item button::after {
      content: "+"; position: absolute; right: 18px; top: 50%; transform: translateY(-50%); color: var(--blue); font-size: 22px;
    }
    .faq-item.open button::after { content: "–"; }
    .faq-item .panel { display: none; background: #f7f9fc; padding: 4px 18px 16px; color: var(--text); }
    .faq-item.open .panel { display: block; }
    .guard { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
    .guard a, .guard article {
      display: block; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 20px; box-shadow: var(--shadow); color: inherit;
    }
    .icon-line {
      width: 36px; height: 36px; border: 1px solid rgba(31,95,168,.3); border-radius: 8px; display: grid; place-items: center;
      color: var(--blue); margin-bottom: 10px; font-weight: 700;
    }
    .contact-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 28px; }
    form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 28px; }
    .form-row { margin-bottom: 14px; }
    label { display: block; font-weight: 600; color: var(--title); margin-bottom: 6px; font-size: 14px; }
    input, select, textarea {
      width: 100%; border: 2px solid var(--line); border-radius: 8px; padding: 10px 12px; background: #fff; color: var(--title);
    }
    input:focus, select:focus, textarea:focus { border-color: var(--blue); }
    .field-error input, .field-error select, .field-error textarea { border-color: var(--danger); }
    .err { display: none; color: var(--danger); font-size: 13px; margin-top: 4px; }
    .field-error .err { display: block; }
    .form-note { font-size: 13px; color: var(--muted); margin: 8px 0 16px; }
    .form-success { display: none; background: rgba(31,95,168,.08); border: 1px solid var(--blue); color: var(--blue-dark); padding: 12px; border-radius: 8px; margin-bottom: 12px; }
    .contact-side { background: var(--ink); color: #fff; border-radius: var(--radius); padding: 28px; }
    .contact-side h3 { color: #fff; }
    .contact-side p, .contact-side a { color: rgba(255,255,255,.86); }
    .contact-side a { font-weight: 600; }
    .site-footer { background: var(--footer); color: #c5ccd6; padding: 56px 0 24px; }
    .footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 28px; margin-bottom: 28px; }
    .site-footer h3 { color: #fff; font-size: 16px; }
    .site-footer a { color: #c5ccd6; display: inline-block; padding: 4px 0; }
    .site-footer a:hover { color: #fff; }
    .copy { border-top: 1px solid rgba(255,255,255,.08); padding-top: 16px; font-size: 13px; color: #9aa3ae; }
    @media (max-width: 1280px) {
      .hero-content { grid-template-columns: 1fr .8fr; }
      .news-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 1024px) {
      section, .dark-sec { padding: 80px 0; }
      .menu { display: none; }
      .burger { display: flex; }
      .nav-cta { display: none; }
      .hero-content, .countdown, .split, .dark-wrap, .contact-grid, .footer-grid, .hot-grid, .adv-grid, .story-grid, .review-grid, .guard, .stats, .partners, .timeline, .bento, .masonry {
        grid-template-columns: 1fr 1fr;
      }
      .bento, .hot-grid, .masonry { grid-template-rows: auto; }
      .bento .wide, .hot-card.big, .case:first-child { grid-row: auto; }
      .timeline { grid-template-columns: 1fr 1fr 1fr; }
      .partners { grid-template-columns: 1fr 1fr 1fr; }
      .hero { min-height: 0; }
      .hero-content { min-height: 0; align-items: stretch; padding: 48px 0 80px; }
      .split img { height: 320px; }
    }
    @media (max-width: 768px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .topbar-links span.hide-sm { display: none; }
      .hero-content, .countdown, .split, .dark-wrap, .contact-grid, .footer-grid, .hot-grid, .adv-grid, .story-grid, .review-grid, .guard, .stats, .partners, .timeline, .bento, .masonry, .news-grid {
        grid-template-columns: 1fr;
      }
      .review:nth-child(2) { margin-top: 0; }
      .stats strong { font-size: 26px; }
      .quote { font-size: 22px; }
      .hero-panel { padding: 24px 20px; }
      .timer div { min-width: 62px; }
      .case { min-height: 220px; }
      .case img { height: 220px; }
      .hot-card img, .hot-card.big img { height: 180px; }
    }
    @media (max-width: 520px) {
      section, .dark-sec { padding: 60px 0; }
      .topbar-inner { justify-content: center; }
      .hero-actions, .btn { width: 100%; }
      .timer { flex-wrap: wrap; }
      form .btn { width: 100%; }
      .story { grid-template-columns: 1fr; }
    }