/* roulang page: index */
:root {
      --bg-0: #070B14;
      --bg-1: #0B1626;
      --bg-2: #102033;
      --blue: #2F7BFF;
      --cyan: #1EE0C6;
      --line: rgba(86,160,255,.28);
      --glass: rgba(14,28,48,.52);
      --text: #E7F0FF;
      --muted: #8EA3BB;
      --warn: #E7B64C;
      --radius-card: 16px;
      --radius-btn: 10px;
      --radius-input: 10px;
      --shadow-glow: 0 0 24px rgba(30,224,198,.35);
      --shadow-soft: 0 18px 40px rgba(0,0,0,.28);
      --container: 1240px;
      --topbar-h: 36px;
      --nav-h: 78px;
      --space-section: 104px;
      --space-card: 24px;
      --font: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; color-scheme: dark; }
    html, body { margin: 0; padding: 0; background: var(--bg-0); color: var(--text); }
    body {
      font-family: var(--font);
      font-size: 16px;
      line-height: 1.75;
      min-width: 320px;
      overflow-x: hidden;
      background:
        radial-gradient(1200px 640px at 12% -10%, rgba(47,123,255,.18), transparent 55%),
        radial-gradient(900px 520px at 92% 8%, rgba(30,224,198,.10), transparent 50%),
        var(--bg-0);
    }
    img { max-width: 100%; height: auto; display: block; border: 0; }
    a { color: var(--cyan); text-decoration: none; transition: color .2s ease, opacity .2s ease; }
    a:hover { color: #7ff0e0; }
    button, input, select, textarea { font-family: inherit; }
    button { cursor: pointer; }
    h1, h2, h3, h4, p { margin: 0; }
    ul, ol { margin: 0; padding: 0; list-style: none; }
    table { border-collapse: collapse; }
    :focus-visible {
      outline: 2px solid var(--cyan);
      outline-offset: 3px;
    }
    .skip-link {
      position: absolute;
      left: 12px;
      top: -48px;
      z-index: 80;
      background: var(--cyan);
      color: #062018;
      padding: 8px 14px;
      border-radius: 8px;
      font-size: 14px;
      font-weight: 600;
    }
    .skip-link:focus { top: 12px; }
    .container {
      width: min(100% - 40px, var(--container));
      margin: 0 auto;
    }
    .kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--cyan);
      font-size: 13px;
      font-weight: 600;
      letter-spacing: .08em;
    }
    .kicker::before {
      content: "";
      width: 18px;
      height: 2px;
      background: var(--cyan);
      box-shadow: 0 0 8px var(--cyan);
    }
    .muted { color: var(--muted); }
    .lead {
      color: var(--muted);
      font-size: 15px;
      line-height: 1.8;
      max-width: 760px;
    }
    .tabular { font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; }
    .badge {
      display: inline-flex;
      align-items: center;
      height: 28px;
      padding: 0 12px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: rgba(47,123,255,.12);
      color: #cfe2ff;
      font-size: 12px;
      white-space: nowrap;
    }
    .glass {
      background: var(--glass);
      backdrop-filter: blur(16px) saturate(140%);
      -webkit-backdrop-filter: blur(16px) saturate(140%);
      border: 1px solid rgba(255,255,255,.12);
      border-radius: var(--radius-card);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.06);
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 0 20px;
      border-radius: var(--radius-btn);
      border: 1px solid transparent;
      font-size: 15px;
      font-weight: 600;
      letter-spacing: .02em;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
      text-decoration: none;
    }
    .btn-primary {
      background: linear-gradient(180deg, #3af0d4 0%, var(--cyan) 100%);
      color: #062018;
      box-shadow: var(--shadow-glow);
    }
    .btn-primary:hover {
      transform: translateY(-1px);
      box-shadow: 0 0 32px rgba(30,224,198,.5);
      color: #04140f;
    }
    .btn-primary:active { transform: translateY(0); }
    .btn-ghost {
      background: rgba(14,28,48,.45);
      color: var(--text);
      border-color: rgba(86,160,255,.4);
    }
    .btn-ghost:hover {
      transform: translateY(-1px);
      border-color: var(--cyan);
      color: #fff;
    }
    .icon {
      width: 24px;
      height: 24px;
      flex: 0 0 24px;
      stroke: var(--cyan);
      fill: none;
      stroke-width: 1.7;
      stroke-linecap: round;
      stroke-linejoin: round;
    }

    .site-header { position: relative; z-index: 40; }
    .topbar {
      height: var(--topbar-h);
      background: #050914;
      border-bottom: 1px solid rgba(86,160,255,.16);
      font-size: 12px;
      color: var(--muted);
    }
    .topbar .container {
      height: 100%;
      display: grid;
      grid-template-columns: 1fr auto 1fr;
      align-items: center;
      gap: 12px;
    }
    .topbar a { color: var(--muted); }
    .topbar a:hover { color: var(--cyan); }
    .topbar-mid { text-align: center; }
    .topbar-mid a {
      color: #b7fff4;
      border-bottom: 1px dashed rgba(30,224,198,.4);
      padding-bottom: 1px;
    }
    .topbar-right { text-align: right; }
    .nav-bar {
      height: var(--nav-h);
      display: flex;
      align-items: center;
      background: rgba(7,11,20,.72);
      border-bottom: 1px solid transparent;
      transition: background .2s ease, border-color .2s ease, box-shadow .2s ease, backdrop-filter .2s ease;
    }
    .nav-bar.is-stuck {
      position: fixed;
      left: 0;
      right: 0;
      top: 0;
      background: rgba(8,14,26,.78);
      backdrop-filter: blur(16px) saturate(140%);
      border-bottom: 1px solid rgba(30,224,198,.28);
      box-shadow: 0 10px 30px rgba(0,0,0,.28), 0 0 0 1px rgba(86,160,255,.12);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      width: min(100% - 40px, var(--container));
      margin: 0 auto;
      min-height: var(--nav-h);
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--text);
      min-height: 44px;
      flex: 0 0 auto;
    }
    .logo:hover { color: #fff; }
    .logo-mark {
      width: 36px;
      height: 36px;
      border-radius: 10px;
      background: linear-gradient(145deg, rgba(47,123,255,.35), rgba(30,224,198,.2));
      border: 1px solid rgba(30,224,198,.4);
      display: grid;
      place-items: center;
      box-shadow: 0 0 16px rgba(30,224,198,.25);
    }
    .logo-text { display: flex; flex-direction: column; line-height: 1.15; }
    .logo-text strong { font-size: 16px; font-weight: 700; }
    .logo-text span { font-size: 11px; color: var(--muted); letter-spacing: .04em; }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .nav-links a {
      position: relative;
      color: var(--text);
      font-size: 14px;
      font-weight: 500;
      padding: 10px 12px;
      min-height: 44px;
      display: inline-flex;
      align-items: center;
    }
    .nav-links a::after {
      content: "";
      position: absolute;
      left: 12px;
      right: 12px;
      bottom: 6px;
      height: 2px;
      background: var(--cyan);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform .2s ease;
      box-shadow: 0 0 8px var(--cyan);
    }
    .nav-links a:hover,
    .nav-links a.is-active { color: #fff; }
    .nav-links a:hover::after,
    .nav-links a.is-active::after { transform: scaleX(1); }
    .nav-cta { flex: 0 0 auto; }
    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 10px;
      border: 1px solid var(--line);
      background: rgba(16,32,51,.7);
      color: var(--text);
      align-items: center;
      justify-content: center;
      flex-direction: column;
      gap: 5px;
    }
    .menu-toggle span {
      display: block;
      width: 18px;
      height: 1.5px;
      background: var(--text);
    }
    .drawer-mask {
      position: fixed;
      inset: 0;
      background: rgba(2,6,12,.56);
      opacity: 0;
      pointer-events: none;
      transition: opacity .25s ease;
      z-index: 50;
    }
    .drawer-mask.is-open { opacity: 1; pointer-events: auto; }
    .drawer {
      position: fixed;
      top: 0;
      right: 0;
      width: min(86vw, 360px);
      height: 100%;
      background: #0a1422;
      border-left: 1px solid var(--line);
      transform: translateX(100%);
      transition: transform .28s ease;
      z-index: 60;
      padding: 24px 20px 32px;
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .drawer.is-open { transform: translateX(0); }
    .drawer a {
      color: var(--text);
      min-height: 44px;
      display: flex;
      align-items: center;
      padding: 0 8px;
      border-bottom: 1px solid rgba(86,160,255,.12);
      font-size: 16px;
    }
    .drawer .btn { margin-top: 8px; width: 100%; }
    .drawer-close {
      align-self: flex-end;
      width: 44px;
      height: 44px;
      border: 1px solid var(--line);
      background: transparent;
      color: var(--text);
      border-radius: 10px;
    }

    main { display: block; }
    .section {
      position: relative;
      padding: var(--space-section) 0;
    }
    .section[id] { scroll-margin-top: 96px; }
    .section-h {
      display: grid;
      gap: 12px;
      margin-bottom: 36px;
    }
    .section-h h2 {
      font-size: clamp(26px, 3vw, 34px);
      line-height: 1.3;
      font-weight: 700;
      max-width: 880px;
    }
    .grid-bg::before {
      content: "";
      position: absolute;
      inset: 0;
      pointer-events: none;
      background-image:
        linear-gradient(rgba(86,160,255,.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(86,160,255,.05) 1px, transparent 1px);
      background-size: 48px 48px;
      mask-image: radial-gradient(ellipse at center, #000 40%, transparent 80%);
    }

    .hero {
      position: relative;
      min-height: 720px;
      padding: 36px 0 72px;
      overflow: hidden;
    }
    .hero-slides, .hero-slide { position: absolute; inset: 0; }
    .hero-slide {
      opacity: 0;
      transition: opacity .7s ease;
      background-size: cover;
      background-position: center;
    }
    .hero-slide.is-on { opacity: 1; }
    .hero-slide::after {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(7,11,20,.88) 0%, rgba(7,11,20,.62) 46%, rgba(7,11,20,.38) 100%),
        linear-gradient(180deg, rgba(7,11,20,.15), rgba(7,11,20,.72));
    }
    .hero-stack {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: minmax(0, 1.4fr) minmax(280px, .82fr);
      gap: 22px;
      align-items: center;
      min-height: 560px;
    }
    .hero-main {
      padding: 32px 32px 28px;
    }
    .hero-main h1 {
      font-size: clamp(32px, 4.4vw, 50px);
      line-height: 1.18;
      font-weight: 700;
      margin: 14px 0 16px;
      max-width: 18ch;
    }
    .hero-main .lead { margin-bottom: 24px; max-width: 42em; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-side {
      display: flex;
      flex-direction: column;
      gap: 16px;
      padding-top: 28px;
    }
    .hero-side-card {
      padding: 20px;
      transform: translate(14px, -24px);
    }
    .hero-side-card:last-child { transform: translate(-10px, 18px); }
    .hero-side-card h3 { font-size: 18px; margin: 8px 0 6px; }
    .hero-side-card p { font-size: 14px; color: var(--muted); }
    .hero-ctrl {
      position: relative;
      z-index: 3;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-top: 22px;
      gap: 16px;
    }
    .hero-arrows { display: flex; gap: 8px; }
    .hero-arrows button,
    .quote-arrows button {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      border: 1px solid var(--line);
      background: rgba(14,28,48,.55);
      color: var(--text);
    }
    .hero-arrows button:hover,
    .quote-arrows button:hover { border-color: var(--cyan); }
    .hero-dots { display: flex; gap: 8px; }
    .hero-dots button {
      width: 28px;
      height: 4px;
      border: 0;
      border-radius: 99px;
      background: rgba(231,240,255,.28);
      min-height: 44px;
      padding: 20px 0 0;
      background-clip: content-box;
    }
    .hero-dots button.is-on { background-image: linear-gradient(var(--cyan), var(--cyan)); background-clip: content-box; box-shadow: 0 10px 16px rgba(30,224,198,.35); }

    .pain-grid {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 28px;
      align-items: stretch;
    }
    .pain-list { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border-radius: var(--radius-card); overflow: hidden; box-shadow: 0 0 0 1px var(--line), 0 0 24px rgba(47,123,255,.12); }
    .pain-item {
      background: var(--bg-1);
      padding: 22px 22px 20px;
      min-height: 168px;
    }
    .pain-item .num { color: var(--cyan); font-size: 13px; font-weight: 600; letter-spacing: .08em; }
    .pain-item h3 { font-size: 18px; margin: 8px 0 8px; }
    .pain-item p { font-size: 14px; color: var(--muted); }
    .pain-visual { position: relative; overflow: hidden; border-radius: var(--radius-card); min-height: 360px; }
    .pain-visual img { width: 100%; height: 100%; object-fit: cover; min-height: 360px; }
    .pain-visual figcaption {
      position: absolute;
      left: 16px;
      right: 16px;
      bottom: 16px;
      padding: 12px 14px;
      font-size: 13px;
    }

    .sol-grid {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 28px;
      align-items: center;
    }
    .sol-visual {
      overflow: hidden;
      border-radius: var(--radius-card);
      min-height: 420px;
      border: 1px solid rgba(255,255,255,.1);
    }
    .sol-visual img { width: 100%; height: 100%; object-fit: cover; min-height: 420px; }
    .sol-mods { display: grid; gap: 14px; }
    .sol-mod { padding: 20px 22px; }
    .sol-mod h3 { font-size: 18px; margin-bottom: 6px; }
    .sol-mod p { font-size: 14px; color: var(--muted); }
    .param-row {
      margin-top: 10px;
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .timeline {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      position: relative;
    }
    .timeline::before {
      content: "";
      position: absolute;
      left: 4%;
      right: 4%;
      top: 22px;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--cyan), var(--blue), transparent);
      opacity: .7;
    }
    .step {
      position: relative;
      padding: 0 0 8px;
    }
    .step-index {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: var(--bg-2);
      border: 1px solid var(--cyan);
      color: var(--cyan);
      font-weight: 700;
      font-variant-numeric: tabular-nums;
      margin-bottom: 14px;
      box-shadow: 0 0 16px rgba(30,224,198,.25);
    }
    .step h3 { font-size: 18px; margin-bottom: 8px; }
    .step p { font-size: 14px; color: var(--muted); }

    .adv-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }
    .adv-card {
      padding: 22px;
      min-height: 230px;
      background-image:
        linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px);
      background-size: 18px 18px;
      transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
    }
    .adv-card:hover {
      transform: translateY(-3px);
      border-color: rgba(30,224,198,.4);
      box-shadow: 0 0 24px rgba(30,224,198,.16);
    }
    .adv-card h3 { font-size: 18px; margin: 12px 0 8px; }
    .adv-card p { font-size: 14px; color: var(--muted); }
    .adv-card .result {
      margin-top: 12px;
      padding-top: 12px;
      border-top: 1px solid rgba(86,160,255,.18);
      color: #d7fff7;
      font-size: 13px;
    }

    .prod-grid {
      display: grid;
      grid-template-columns: 1.25fr 1fr 1fr;
      gap: 22px;
    }
    .prod-card { overflow: hidden; display: flex; flex-direction: column; min-height: 100%; }
    .prod-card img { width: 100%; height: 190px; object-fit: cover; }
    .prod-card.featured img { height: 230px; }
    .prod-body { padding: 20px 22px 22px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
    .prod-body h3 { font-size: 20px; }
    .tags { display: flex; flex-wrap: wrap; gap: 8px; }
    .prod-points { display: grid; gap: 6px; color: var(--muted); font-size: 14px; }
    .prod-points li { padding-left: 14px; position: relative; }
    .prod-points li::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--cyan);
      position: absolute;
      left: 0;
      top: 9px;
    }
    .prod-body .btn { align-self: flex-start; margin-top: auto; }

    .case-dark {
      background:
        radial-gradient(700px 280px at 80% 0%, rgba(47,123,255,.16), transparent 60%),
        var(--bg-0);
      padding: 88px 0;
      border-block: 1px solid rgba(86,160,255,.16);
      position: relative;
      overflow: hidden;
    }
    .case-dark::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(115deg, transparent 0 18%, rgba(30,224,198,.06) 19%, transparent 20%),
        linear-gradient(rgba(86,160,255,.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(86,160,255,.07) 1px, transparent 1px);
      background-size: auto, 64px 64px, 64px 64px;
      opacity: .35;
      pointer-events: none;
    }
    .case-dark .container { position: relative; z-index: 1; }
    .case-layout {
      display: grid;
      grid-template-columns: 1.3fr .8fr;
      gap: 22px;
    }
    .case-big, .case-small { padding: 26px; }
    .case-big { min-height: 340px; background-size: cover; background-position: center; position: relative; }
    .case-big::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(8,14,26,.25), rgba(8,14,26,.82));
      border-radius: inherit;
    }
    .case-big > * { position: relative; z-index: 1; }
    .case-metric {
      display: flex;
      gap: 18px;
      margin-top: 22px;
      padding: 14px 16px;
    }
    .case-metric div { min-width: 0; }
    .case-metric strong { display: block; font-size: 22px; }
    .case-metric span { color: var(--muted); font-size: 12px; }
    .case-side { display: grid; gap: 16px; }
    .idea {
      margin-top: 22px;
      color: #cde8ff;
      font-size: 15px;
      border-left: 2px solid var(--cyan);
      padding-left: 14px;
    }

    .stats-bar {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 12px;
    }
    .stat {
      padding: 22px 16px;
      text-align: left;
    }
    .stat b {
      display: block;
      font-size: 28px;
      line-height: 1.2;
      font-weight: 700;
      font-variant-numeric: tabular-nums;
    }
    .stat span { color: var(--muted); font-size: 13px; }

    .story-list { display: grid; gap: 22px; }
    .story {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 0;
      overflow: hidden;
    }
    .story:nth-child(even) { grid-template-columns: 1.1fr .9fr; }
    .story:nth-child(even) .story-media { order: 2; }
    .story-media img { width: 100%; height: 100%; object-fit: cover; min-height: 280px; }
    .story-body { padding: 28px 28px; }
    .story-body h3 { font-size: 22px; margin: 8px 0 10px; }
    .story-body p { color: var(--muted); font-size: 15px; }

    .quote-wrap { position: relative; }
    .quote-track {
      display: flex;
      gap: 18px;
      overflow-x: auto;
      scroll-snap-type: x mandatory;
      padding: 6px 2px 12px;
      scrollbar-width: thin;
    }
    .quote-card {
      flex: 0 0 min(78%, 360px);
      scroll-snap-align: start;
      padding: 22px;
      min-height: 210px;
    }
    .quote-card p { font-size: 15px; }
    .quote-meta { margin-top: 16px; color: var(--muted); font-size: 13px; }

    .chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
    .chip {
      min-height: 36px;
      padding: 0 14px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: rgba(16,32,51,.7);
      color: var(--text);
      font-size: 13px;
    }
    .chip.is-on {
      border-color: var(--cyan);
      color: #062018;
      background: var(--cyan);
      font-weight: 600;
    }
    .scene-matrix {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 16px;
    }
    .scene-cell { padding: 18px 18px 16px; grid-column: span 2; }
    .scene-cell h3 { font-size: 18px; margin-bottom: 8px; }
    .scene-cell p { font-size: 14px; color: var(--muted); }
    .bound { margin-top: 10px; font-size: 13px; color: var(--warn); }

    .tab-head { display: flex; gap: 10px; margin-bottom: 20px; flex-wrap: wrap; }
    .tab-btn {
      min-height: 44px;
      padding: 0 16px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: rgba(16,32,51,.6);
      color: var(--text);
    }
    .tab-btn.is-on {
      background: rgba(30,224,198,.16);
      border-color: var(--cyan);
      color: #d7fff7;
    }
    .tab-panel { display: none; }
    .tab-panel.is-on { display: grid; }
    .split {
      grid-template-columns: 1fr 1fr;
      gap: 22px;
      align-items: center;
    }
    .split img { width: 100%; height: 340px; object-fit: cover; border-radius: var(--radius-card); }
    .point-list { display: grid; gap: 14px; }
    .point-list li { padding: 16px 18px; }
    .point-list h3 { font-size: 17px; margin-bottom: 4px; }
    .point-list p { font-size: 14px; color: var(--muted); }

    .guard-grid {
      display: grid;
      grid-template-columns: 1fr 1.15fr;
      gap: 22px;
    }
    .qual-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-bottom: 16px;
    }
    .qual { padding: 16px; font-size: 14px; }
    .iface {
      width: 100%;
    }
    .iface-row {
      display: grid;
      grid-template-columns: 220px 1fr;
      gap: 12px;
      padding: 14px 0;
      border-bottom: 1px solid rgba(86,160,255,.14);
      font-size: 14px;
    }
    .iface-row b { color: #dbeaff; font-weight: 600; }
    .iface-row span { color: var(--muted); }

    .news-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      grid-template-rows: repeat(3, auto);
      gap: 16px;
    }
    .news-card { overflow: hidden; display: grid; grid-template-columns: 140px 1fr; }
    .news-card.featured {
      grid-row: 1 / span 3;
      grid-template-columns: 1fr;
    }
    .news-card img { width: 100%; height: 100%; object-fit: cover; min-height: 96px; }
    .news-card.featured img { min-height: 230px; height: 230px; }
    .news-body { padding: 16px 18px; }
    .news-body time { color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }
    .news-body h3 { font-size: 16px; margin: 6px 0; line-height: 1.45; }
    .news-card.featured h3 { font-size: 22px; }
    .news-body p { font-size: 14px; color: var(--muted); }
    .more-link { display: inline-flex; min-height: 44px; align-items: center; font-weight: 600; }

    .dash {
      background: #071018;
      border-radius: 20px;
      padding: 22px;
      border: 1px solid rgba(86,160,255,.2);
    }
    .dash-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 14px;
    }
    .meter {
      padding: 16px 16px 14px;
      min-height: 118px;
    }
    .meter label { display: block; color: var(--muted); font-size: 12px; margin-bottom: 8px; }
    .meter b { font-size: 26px; font-variant-numeric: tabular-nums; }
    .meter .bar {
      margin-top: 10px;
      height: 4px;
      background: rgba(86,160,255,.18);
      border-radius: 99px;
      overflow: hidden;
    }
    .meter .bar i {
      display: block;
      height: 100%;
      background: linear-gradient(90deg, var(--blue), var(--cyan));
    }
    .meter.warn b { color: var(--warn); }

    .faq-list { display: grid; gap: 10px; max-width: 920px; }
    .faq-item {
      border: 1px solid rgba(86,160,255,.18);
      border-radius: 14px;
      background: rgba(11,22,38,.8);
      overflow: hidden;
    }
    .faq-q {
      width: 100%;
      text-align: left;
      background: transparent;
      border: 0;
      color: var(--text);
      min-height: 56px;
      padding: 14px 52px 14px 18px;
      font-size: 16px;
      font-weight: 600;
      position: relative;
    }
    .faq-q::after {
      content: "";
      position: absolute;
      right: 20px;
      top: 50%;
      width: 10px;
      height: 10px;
      border-right: 2px solid var(--cyan);
      border-bottom: 2px solid var(--cyan);
      transform: translateY(-70%) rotate(45deg);
      transition: transform .2s ease;
    }
    .faq-item.is-open .faq-q::after { transform: translateY(-30%) rotate(225deg); }
    .faq-a {
      display: none;
      padding: 0 18px 18px;
      color: var(--muted);
      font-size: 15px;
      border-top: 1px solid rgba(30,224,198,.16);
      box-shadow: inset 0 8px 18px rgba(30,224,198,.04);
    }
    .faq-item.is-open .faq-a { display: block; padding-top: 14px; }

    .cta-band {
      padding: 88px 0;
      background:
        radial-gradient(600px 240px at 20% 0%, rgba(30,224,198,.12), transparent 55%),
        #060a12;
      border-top: 1px solid rgba(30,224,198,.22);
      box-shadow: inset 0 1px 0 rgba(30,224,198,.2);
    }
    .cta-grid {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 28px;
      align-items: start;
    }
    .cta-copy h2 { font-size: clamp(26px, 3vw, 34px); margin: 10px 0 12px; }
    .hotline {
      margin-top: 18px;
      padding: 16px 18px;
    }
    .hotline a { color: #fff; font-size: 22px; font-weight: 700; font-variant-numeric: tabular-nums; }
    form.assess {
      padding: 24px;
      display: grid;
      gap: 14px;
    }
    .field { display: grid; gap: 6px; }
    .field span { font-size: 13px; color: var(--muted); }
    .field input, .field select {
      height: 44px;
      border-radius: var(--radius-input);
      border: 1px solid rgba(86,160,255,.28);
      background: #0b1726;
      color: var(--text);
      padding: 0 12px;
      font-size: 15px;
    }
    .field input:focus, .field select:focus {
      border-color: var(--cyan);
    }
    .field.is-error input,
    .field.is-error select { border-color: var(--warn); }
    .field .err { color: var(--warn); font-size: 12px; min-height: 16px; }
    .form-ok {
      display: none;
      padding: 12px 14px;
      border-radius: 10px;
      background: rgba(30,224,198,.12);
      color: #d7fff7;
      font-size: 14px;
    }
    .form-ok.is-show { display: block; }
    .privacy { font-size: 12px; color: var(--muted); }

    .site-footer {
      background: #05080f;
      border-top: 1px solid rgba(86,160,255,.14);
      padding: 48px 0 24px;
      color: var(--muted);
      font-size: 13px;
    }
    .foot-grid {
      display: grid;
      grid-template-columns: 1.3fr .8fr 1fr 1fr;
      gap: 28px;
      margin-bottom: 28px;
    }
    .site-footer h3 { color: var(--text); font-size: 15px; margin-bottom: 12px; }
    .site-footer a { color: var(--muted); display: inline-flex; min-height: 32px; align-items: center; }
    .site-footer a:hover { color: var(--cyan); }
    .foot-brand strong { color: var(--text); font-size: 16px; display: block; margin-bottom: 8px; }
    .copyright {
      border-top: 1px solid rgba(86,160,255,.12);
      padding-top: 16px;
      display: flex;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
    }

    @media (max-width: 1439px) {
      .scene-matrix { grid-template-columns: repeat(2, 1fr); }
      .scene-cell { grid-column: span 1; }
    }
    @media (max-width: 1024px) {
      :root { --space-section: 84px; --nav-h: 72px; }
      .nav-links { display: none; }
      .nav-cta { display: none; }
      .menu-toggle { display: flex; }
      .hero { min-height: 0; padding-bottom: 48px; }
      .hero-stack, .pain-grid, .sol-grid, .case-layout, .cta-grid, .guard-grid, .split, .news-grid {
        grid-template-columns: 1fr;
      }
      .news-card.featured { grid-row: auto; }
      .timeline { grid-template-columns: 1fr 1fr; }
      .timeline::before { display: none; }
      .adv-grid { grid-template-columns: 1fr 1fr; }
      .prod-grid { grid-template-columns: 1fr; }
      .stats-bar { grid-template-columns: 1fr 1fr 1fr; }
      .dash-grid { grid-template-columns: 1fr 1fr; }
      .foot-grid { grid-template-columns: 1fr 1fr; }
      .story, .story:nth-child(even) { grid-template-columns: 1fr; }
      .story:nth-child(even) .story-media { order: 0; }
      .hero-side-card, .hero-side-card:last-child { transform: none; }
      .topbar .container { grid-template-columns: 1fr auto; }
      .topbar-mid { display: none; }
    }
    @media (max-width: 767px) {
      :root { --space-section: 72px; }
      .container { width: min(100% - 28px, var(--container)); }
      .topbar { height: auto; }
      .topbar .container { min-height: 32px; display: flex; justify-content: space-between; }
      .topbar-right { display: none; }
      .hero-main { padding: 22px 18px; }
      .hero-main h1 { max-width: none; font-size: 30px; }
      .pain-list { grid-template-columns: 1fr; }
      .timeline, .adv-grid, .stats-bar, .dash-grid, .qual-row, .foot-grid, .scene-matrix {
        grid-template-columns: 1fr;
      }
      .iface-row { grid-template-columns: 1fr; gap: 4px; }
      .news-card { grid-template-columns: 1fr; }
      .quote-card { flex-basis: 86%; }
      .copyright { flex-direction: column; }
      .hero { padding-top: 20px; }
      .sol-visual, .pain-visual img, .sol-visual img { min-height: 240px; }
      .split img { height: 220px; }
    }
    @media (max-width: 520px) {
      .hero-actions { flex-direction: column; }
      .hero-actions .btn { width: 100%; }
      .stats-bar { grid-template-columns: 1fr 1fr; }
      .stat b { font-size: 22px; }
      h2 { font-size: 24px !important; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after {
        animation: none !important;
        transition: none !important;
        scroll-behavior: auto !important;
      }
    }

/* roulang page: index */
:root {
      --bg-0: #070B14;
      --bg-1: #0B1626;
      --bg-2: #102033;
      --blue: #2F7BFF;
      --cyan: #1EE0C6;
      --line: rgba(86,160,255,.28);
      --glass: rgba(14,28,48,.52);
      --text: #E7F0FF;
      --muted: #8EA3BB;
      --warn: #E7B64C;
      --danger: #E7B64C;
      --radius-card: 16px;
      --radius-btn: 10px;
      --shadow-glow: 0 0 24px rgba(30,224,198,.35);
      --container: 1240px;
      --nav-h: 80px;
      --topbar-h: 36px;
      --space-section: 108px;
      --gap: 24px;
      --text-dark: #082018;
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    html, body { background: var(--bg-0); color: var(--text); }
    body {
      font-family: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      font-size: 16px;
      line-height: 1.75;
      min-width: 320px;
      overflow-x: hidden;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font-family: inherit; }
    button { cursor: pointer; border: 0; background: none; color: inherit; }
    ul, ol { list-style: none; }
    table { border-collapse: collapse; width: 100%; }
    :focus-visible {
      outline: 2px solid var(--cyan);
      outline-offset: 3px;
    }
    .skip-link {
      position: absolute;
      left: 12px;
      top: -48px;
      z-index: 10000;
      background: var(--cyan);
      color: var(--text-dark);
      padding: 10px 16px;
      border-radius: 10px;
      font-weight: 600;
    }
    .skip-link:focus { top: 12px; }
    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      z-index: 0;
      background:
        radial-gradient(900px 480px at 12% -10%, rgba(47,123,255,.18), transparent 55%),
        radial-gradient(720px 420px at 92% 8%, rgba(30,224,198,.1), transparent 50%),
        linear-gradient(transparent 31px, rgba(86,160,255,.045) 32px),
        linear-gradient(90deg, transparent 31px, rgba(86,160,255,.045) 32px);
      background-size: auto, auto, 32px 32px, 32px 32px;
      opacity: .7;
    }
    .container {
      width: min(100% - 40px, var(--container));
      margin: 0 auto;
      position: relative;
      z-index: 1;
    }
    .site-header { position: relative; z-index: 50; }
    .topbar {
      height: var(--topbar-h);
      background: #050910;
      border-bottom: 1px solid var(--line);
      display: flex;
      align-items: center;
      font-size: 12.5px;
      color: var(--muted);
    }
    .topbar .container {
      display: grid;
      grid-template-columns: 1fr auto 1fr;
      align-items: center;
      gap: 12px;
    }
    .topbar a { color: #c9d8ea; }
    .topbar a:hover { color: var(--cyan); }
    .topbar-center a {
      color: var(--cyan);
      padding: 4px 10px;
      min-height: 28px;
      display: inline-flex;
      align-items: center;
      border: 1px solid rgba(30,224,198,.28);
      border-radius: 999px;
    }
    .topbar-right { text-align: right; }
    .mainnav {
      height: var(--nav-h);
      display: flex;
      align-items: center;
      background: rgba(7,11,20,.72);
      backdrop-filter: blur(16px) saturate(140%);
      border-bottom: 1px solid transparent;
      transition: background .25s ease, border-color .25s ease, box-shadow .25s ease;
    }
    .mainnav.is-sticky {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      background: rgba(11,22,38,.78);
      border-bottom: 1px solid rgba(86,160,255,.35);
      box-shadow: 0 10px 40px rgba(0,0,0,.28), 0 0 0 1px rgba(30,224,198,.12);
    }
    .mainnav .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      min-height: 44px;
      flex-shrink: 0;
    }
    .logo-mark {
      width: 36px;
      height: 36px;
      border-radius: 10px;
      display: grid;
      place-items: center;
      background: linear-gradient(160deg, rgba(30,224,198,.2), rgba(47,123,255,.18));
      border: 1px solid rgba(30,224,198,.45);
      box-shadow: var(--shadow-glow);
    }
    .logo-text {
      display: flex;
      flex-direction: column;
      line-height: 1.15;
    }
    .logo-text strong {
      font-size: 16px;
      font-weight: 700;
      letter-spacing: .04em;
    }
    .logo-text span {
      font-size: 12px;
      color: var(--muted);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .nav-links a {
      position: relative;
      min-height: 44px;
      padding: 10px 12px;
      display: inline-flex;
      align-items: center;
      color: #d5e4f6;
      font-size: 14.5px;
      font-weight: 500;
    }
    .nav-links a::after {
      content: "";
      position: absolute;
      left: 12px;
      right: 12px;
      bottom: 6px;
      height: 2px;
      border-radius: 99px;
      background: var(--cyan);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform .2s ease;
      box-shadow: 0 0 10px rgba(30,224,198,.8);
    }
    .nav-links a:hover,
    .nav-links a.is-active { color: #fff; }
    .nav-links a.is-active::after,
    .nav-links a:hover::after { transform: scaleX(1); }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 10px 18px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 14.5px;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
    }
    .btn-primary {
      background: linear-gradient(180deg, #3af0d4, var(--cyan));
      color: var(--text-dark);
      box-shadow: var(--shadow-glow);
    }
    .btn-primary:hover {
      transform: translateY(-1px);
      box-shadow: 0 0 32px rgba(30,224,198,.55);
    }
    .btn-primary:active { transform: translateY(0); }
    .btn-ghost {
      background: rgba(14,28,48,.45);
      color: var(--text);
      border: 1px solid rgba(255,255,255,.14);
      backdrop-filter: blur(16px) saturate(140%);
    }
    .btn-ghost:hover {
      border-color: rgba(30,224,198,.55);
      box-shadow: 0 0 18px rgba(30,224,198,.18);
      transform: translateY(-1px);
    }
    .nav-cta { flex-shrink: 0; }
    .nav-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 10px;
      border: 1px solid var(--line);
      align-items: center;
      justify-content: center;
      flex-direction: column;
      gap: 5px;
      background: var(--glass);
    }
    .nav-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      background: var(--text);
      border-radius: 2px;
    }
    .drawer-mask {
      position: fixed;
      inset: 0;
      background: rgba(2,6,12,.62);
      opacity: 0;
      pointer-events: none;
      transition: opacity .25s ease;
      z-index: 60;
    }
    .drawer-mask.is-open { opacity: 1; pointer-events: auto; }
    .drawer {
      position: fixed;
      top: 0;
      right: 0;
      width: min(84vw, 360px);
      height: 100%;
      background: #0a1524;
      border-left: 1px solid var(--line);
      transform: translateX(100%);
      transition: transform .28s ease;
      z-index: 70;
      padding: 24px 20px;
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .drawer.is-open { transform: translateX(0); }
    .drawer a {
      min-height: 44px;
      display: flex;
      align-items: center;
      padding: 8px 6px;
      border-bottom: 1px solid rgba(86,160,255,.12);
    }
    main { position: relative; z-index: 1; }
    .section {
      padding: var(--space-section) 0;
      position: relative;
    }
    .section-alt { background: var(--bg-1); }
    .section-lift { background: var(--bg-2); }
    .kicker {
      color: var(--cyan);
      font-size: 13px;
      letter-spacing: .16em;
      font-weight: 600;
      margin-bottom: 10px;
    }
    .h2 {
      font-size: clamp(26px, 3vw, 34px);
      line-height: 1.28;
      font-weight: 700;
      margin-bottom: 14px;
      letter-spacing: .01em;
    }
    .h3 {
      font-size: 20px;
      line-height: 1.4;
      font-weight: 650;
      margin-bottom: 8px;
    }
    .lead {
      color: var(--muted);
      font-size: 15.5px;
      max-width: 760px;
    }
    .section-head { margin-bottom: 40px; }
    .glass {
      background: var(--glass);
      backdrop-filter: blur(16px) saturate(140%);
      border: 1px solid rgba(255,255,255,.12);
      border-radius: var(--radius-card);
      box-shadow: 0 10px 40px rgba(0,0,0,.22);
    }
    .badge {
      display: inline-flex;
      align-items: center;
      min-height: 28px;
      padding: 2px 10px;
      border-radius: 999px;
      font-size: 12px;
      color: #d7fff6;
      background: rgba(30,224,198,.12);
      border: 1px solid rgba(30,224,198,.28);
    }
    .hero {
      position: relative;
      min-height: 720px;
      padding: 28px 0 48px;
    }
    .hero-slider {
      position: absolute;
      inset: 0;
      overflow: hidden;
    }
    .slide {
      position: absolute;
      inset: 0;
      opacity: 0;
      transition: opacity .7s ease;
    }
    .slide.is-active { opacity: 1; z-index: 1; }
    .slide img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .slide::after {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(7,11,20,.86) 0%, rgba(7,11,20,.62) 42%, rgba(7,11,20,.38) 100%),
        linear-gradient(180deg, rgba(7,11,20,.2), rgba(7,11,20,.72));
    }
    .hero-grid {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.25fr .75fr;
      gap: 22px;
      align-items: stretch;
      min-height: 640px;
      padding-top: 28px;
    }
    .hero-main {
      padding: 36px 34px;
      align-self: center;
    }
    .hero-main h1 {
      font-size: clamp(32px, 4.2vw, 48px);
      line-height: 1.22;
      margin: 10px 0 18px;
      font-weight: 700;
    }
    .hero-copy {
      font-size: 16px;
      color: #c5d5e8;
      max-width: 640px;
      margin-bottom: 24px;
    }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-side {
      display: flex;
      flex-direction: column;
      justify-content: center;
      gap: 16px;
      padding-top: 48px;
    }
    .side-card {
      padding: 20px 22px;
      transform: translateX(18px);
    }
    .side-card:nth-child(2) { transform: translateX(-8px); margin-right: 28px; }
    .side-card strong {
      display: block;
      font-size: 28px;
      font-variant-numeric: tabular-nums;
      font-feature-settings: "tnum";
      color: var(--cyan);
      line-height: 1.1;
    }
    .side-card p { color: var(--muted); font-size: 14px; margin-top: 6px; }
    .slider-nav {
      position: relative;
      z-index: 3;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-top: 22px;
    }
    .arrow-btns { display: flex; gap: 8px; }
    .icon-btn {
      width: 44px;
      height: 44px;
      border-radius: 12px;
      border: 1px solid rgba(255,255,255,.14);
      background: var(--glass);
      backdrop-filter: blur(16px);
      color: var(--text);
      display: grid;
      place-items: center;
    }
    .icon-btn:hover { border-color: var(--cyan); box-shadow: var(--shadow-glow); }
    .dots { display: flex; gap: 8px; }
    .dots button {
      width: 28px;
      height: 4px;
      border-radius: 99px;
      background: rgba(231,240,255,.25);
      min-height: 44px;
      position: relative;
    }
    .dots button::before {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      top: 50%;
      height: 4px;
      border-radius: 99px;
      background: rgba(231,240,255,.25);
      transform: translateY(-50%);
    }
    .dots button.is-active::before {
      background: var(--cyan);
      box-shadow: 0 0 10px rgba(30,224,198,.8);
    }
    .pain-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }
    .pain-list { display: grid; gap: 14px; }
    .pain-item {
      padding: 18px 20px;
      display: grid;
      grid-template-columns: 42px 1fr;
      gap: 14px;
      align-items: start;
    }
    .pain-no {
      width: 42px;
      height: 42px;
      border-radius: 12px;
      display: grid;
      place-items: center;
      color: var(--cyan);
      border: 1px solid var(--line);
      font-variant-numeric: tabular-nums;
      font-weight: 700;
    }
    .pain-item h3 { font-size: 18px; margin-bottom: 4px; }
    .pain-item p { color: var(--muted); font-size: 14.5px; }
    .media-frame {
      overflow: hidden;
      border-radius: 18px;
      border: 1px solid rgba(255,255,255,.12);
      position: relative;
    }
    .media-frame img { width: 100%; height: 100%; object-fit: cover; min-height: 420px; }
    .split {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 32px;
      align-items: center;
    }
    .module-stack { display: grid; gap: 14px; }
    .module {
      padding: 18px 20px;
    }
    .module h3 { font-size: 18px; }
    .module p { color: var(--muted); font-size: 14.5px; }
    .spec {
      color: #d9fff6 !important;
      font-variant-numeric: tabular-nums;
    }
    .timeline {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      position: relative;
    }
    .timeline::before {
      content: "";
      position: absolute;
      left: 4%;
      right: 4%;
      top: 28px;
      height: 1px;
      background: linear-gradient(90deg, transparent, var(--cyan), var(--blue), transparent);
      box-shadow: 0 0 12px rgba(30,224,198,.45);
    }
    .step {
      padding: 20px 18px 22px;
      position: relative;
    }
    .step-index {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: #07131f;
      border: 1px solid var(--cyan);
      color: var(--cyan);
      font-size: 12px;
      font-weight: 700;
      margin-bottom: 16px;
      position: relative;
      z-index: 1;
      font-variant-numeric: tabular-nums;
    }
    .step h3 { font-size: 18px; }
    .step p { color: var(--muted); font-size: 14.5px; }
    .adv-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }
    .adv-card {
      padding: 24px 22px;
      min-height: 250px;
      background-image: linear-gradient(180deg, rgba(255,255,255,.03), transparent 40%),
        linear-gradient(transparent 23px, rgba(86,160,255,.05) 24px),
        linear-gradient(90deg, transparent 23px, rgba(86,160,255,.05) 24px);
      background-size: auto, 24px 24px, 24px 24px;
      transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
    }
    .adv-card:hover {
      transform: translateY(-3px);
      border-color: rgba(30,224,198,.4);
      box-shadow: 0 0 24px rgba(30,224,198,.16);
    }
    .icon-line {
      width: 24px;
      height: 24px;
      stroke: var(--cyan);
      fill: none;
      stroke-width: 1.7;
      margin-bottom: 14px;
    }
    .adv-card h3 { font-size: 18px; }
    .adv-card p { color: var(--muted); font-size: 14.5px; margin: 8px 0 12px; }
    .metric {
      font-size: 13.5px;
      color: #d7fff6;
      border-top: 1px solid var(--line);
      padding-top: 10px;
      font-variant-numeric: tabular-nums;
    }
    .product-grid {
      display: grid;
      grid-template-columns: 1.2fr .9fr .9fr;
      gap: 22px;
    }
    .product-card { overflow: hidden; display: flex; flex-direction: column; }
    .product-card img { width: 100%; height: 210px; object-fit: cover; }
    .product-card.featured img { height: 280px; }
    .product-body { padding: 22px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
    .product-body h3 { font-size: 20px; }
    .tags { display: flex; flex-wrap: wrap; gap: 8px; }
    .param { color: var(--muted); font-size: 14.5px; }
    .param li {
      padding-left: 14px;
      position: relative;
      margin: 4px 0;
    }
    .param li::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--cyan);
      position: absolute;
      left: 0;
      top: 10px;
      box-shadow: 0 0 8px rgba(30,224,198,.8);
    }
    .case-dark {
      background: #050910;
      overflow: hidden;
    }
    .case-dark::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image: url("/assets/images/b0585f7f394001ae.jpg");
      background-size: cover;
      background-position: center;
      opacity: .18;
    }
    .case-dark::after {
      content: "";
      position: absolute;
      inset: 0;
      background:
        radial-gradient(circle at 20% 20%, rgba(47,123,255,.16), transparent 28%),
        repeating-linear-gradient(115deg, transparent 0 18px, rgba(86,160,255,.05) 18px 19px);
      pointer-events: none;
    }
    .case-layout {
      display: grid;
      grid-template-columns: 1.3fr .7fr;
      gap: 22px;
      position: relative;
      z-index: 1;
    }
    .case-main, .case-mini { padding: 28px 26px; }
    .case-mini-wrap { display: grid; gap: 16px; }
    .idea {
      margin-top: 22px;
      padding: 16px 18px;
      color: #cfe7ff;
      border-left: 2px solid var(--cyan);
      background: rgba(14,28,48,.45);
    }
    .glass-bar {
      margin-top: 24px;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      padding: 14px;
    }
    .glass-bar span { color: var(--muted); font-size: 12.5px; display: block; }
    .glass-bar b {
      font-size: 20px;
      font-variant-numeric: tabular-nums;
      font-feature-settings: "tnum";
    }
    .stats {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 14px;
    }
    .stat {
      padding: 22px 16px;
      text-align: left;
    }
    .stat b {
      display: block;
      font-size: 28px;
      font-variant-numeric: tabular-nums;
      font-feature-settings: "tnum";
      color: var(--cyan);
      line-height: 1.1;
    }
    .stat span { color: var(--muted); font-size: 13px; }
    .stories {
      display: grid;
      gap: 28px;
    }
    .story {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 24px;
      align-items: center;
      padding: 18px;
    }
    .story:nth-child(even) { grid-template-columns: 1.1fr .9fr; }
    .story:nth-child(even) .story-media { order: 2; }
    .story img {
      width: 100%;
      height: 280px;
      object-fit: cover;
      border-radius: 14px;
    }
    .quotes-track {
      display: grid;
      grid-auto-flow: column;
      grid-auto-columns: minmax(280px, 1fr);
      gap: 18px;
      overflow-x: auto;
      scroll-snap-type: x mandatory;
      padding-bottom: 8px;
    }
    .quote {
      scroll-snap-align: start;
      padding: 22px 20px;
      min-height: 210px;
    }
    .quote p { font-size: 15px; margin-bottom: 16px; }
    .quote footer { color: var(--muted); font-size: 13px; }
    .chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 26px; }
    .scene-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 14px;
    }
    .scene-cell { padding: 18px 16px; }
    .scene-cell h3 { font-size: 16px; }
    .scene-cell p { color: var(--muted); font-size: 13.5px; }
    .bound { color: var(--warn) !important; }
    .tab-bar { display: flex; gap: 10px; margin-bottom: 22px; }
    .tab-btn {
      min-height: 44px;
      padding: 8px 16px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: rgba(14,28,48,.4);
      color: var(--muted);
      font-weight: 600;
    }
    .tab-btn.is-active {
      color: var(--text-dark);
      background: var(--cyan);
      box-shadow: var(--shadow-glow);
    }
    .tab-panel { display: none; }
    .tab-panel.is-active { display: grid; }
    .topic-grid {
      grid-template-columns: 1.1fr .9fr;
      gap: 24px;
      align-items: center;
    }
    .point-list li {
      padding: 12px 0;
      border-bottom: 1px solid var(--line);
      color: var(--muted);
    }
    .point-list strong { color: var(--text); display: block; }
    .iface {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 24px;
    }
    .iface-table {
      width: 100%;
      font-size: 14.5px;
    }
    .iface-table th, .iface-table td {
      text-align: left;
      padding: 12px 10px;
      border-bottom: 1px solid var(--line);
    }
    .iface-table th { color: var(--muted); font-weight: 500; }
    .guard-list li {
      padding: 12px 0 12px 16px;
      position: relative;
      color: var(--muted);
    }
    .guard-list li::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--blue);
      position: absolute;
      left: 0;
      top: 20px;
    }
    .news-grid {
      display: grid;
      grid-template-columns: 1.2fr .9fr;
      gap: 22px;
    }
    .news-main img { width: 100%; height: 320px; object-fit: cover; }
    .news-main .body, .news-side article { padding: 18px 20px; }
    .news-side { display: grid; gap: 14px; }
    .news-side article { display: grid; gap: 6px; }
    .date { color: var(--cyan); font-size: 12.5px; font-variant-numeric: tabular-nums; }
    .news-side h3, .news-main h3 { font-size: 18px; }
    .news-side p, .news-main p { color: var(--muted); font-size: 14.5px; }
    .more-link {
      display: inline-flex;
      min-height: 44px;
      align-items: center;
      color: var(--cyan);
      font-weight: 600;
    }
    .dash {
      background: #050910;
    }
    .dash-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }
    .dash-card {
      padding: 20px 18px;
      min-height: 140px;
      background: linear-gradient(180deg, rgba(16,32,51,.8), rgba(14,28,48,.45));
    }
    .dash-card span { color: var(--muted); font-size: 13px; }
    .dash-card b {
      display: block;
      margin-top: 10px;
      font-size: 30px;
      font-variant-numeric: tabular-nums;
      font-feature-settings: "tnum";
    }
    .dash-card em {
      font-style: normal;
      color: var(--cyan);
      font-size: 12.5px;
    }
    .faq-list { display: grid; gap: 10px; }
    .faq-item {
      border: 1px solid rgba(255,255,255,.12);
      border-radius: 14px;
      background: rgba(14,28,48,.38);
      overflow: hidden;
    }
    .faq-item[open] { box-shadow: 0 0 0 1px rgba(30,224,198,.2); }
    .faq-item summary {
      list-style: none;
      cursor: pointer;
      min-height: 56px;
      padding: 14px 52px 14px 20px;
      position: relative;
      font-weight: 600;
    }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after {
      content: "";
      width: 10px;
      height: 10px;
      border-right: 2px solid var(--cyan);
      border-bottom: 2px solid var(--cyan);
      position: absolute;
      right: 22px;
      top: 22px;
      transform: rotate(45deg);
      transition: transform .2s ease;
    }
    .faq-item[open] summary::after { transform: rotate(225deg); top: 26px; }
    .faq-item .ans {
      padding: 0 20px 18px;
      color: var(--muted);
      border-top: 1px solid rgba(30,224,198,.18);
      box-shadow: inset 0 8px 18px rgba(30,224,198,.05);
    }
    .cta {
      padding: 72px 0 88px;
      background:
        linear-gradient(180deg, rgba(5,9,16,.65), rgba(5,9,16,.88)),
        url("/assets/images/5a6d054579ad2043.jpg") center/cover no-repeat;
    }
    .cta-box {
      display: grid;
      grid-template-columns: .85fr 1.15fr;
      gap: 28px;
      padding: 32px;
      border: 1px solid rgba(30,224,198,.28);
      box-shadow: 0 0 0 1px rgba(47,123,255,.18), var(--shadow-glow);
    }
    .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; color: #c9d8ea; }
    input, select, textarea {
      min-height: 44px;
      border-radius: 10px;
      border: 1px solid var(--line);
      background: rgba(7,11,20,.7);
      color: var(--text);
      padding: 10px 12px;
    }
    input:focus, select:focus, textarea:focus {
      border-color: var(--cyan);
    }
    .field.error input, .field.error select {
      border-color: var(--warn);
    }
    .err {
      color: var(--warn);
      font-size: 12px;
      min-height: 16px;
    }
    .form-note { color: var(--muted); font-size: 13px; margin-top: 8px; }
    .form-success {
      display: none;
      padding: 14px 16px;
      border-radius: 10px;
      background: rgba(30,224,198,.12);
      color: #d7fff6;
      margin-bottom: 10px;
    }
    .form-success.is-show { display: block; }
    .site-footer {
      background: #04070d;
      border-top: 1px solid var(--line);
      padding: 56px 0 24px;
      color: var(--muted);
      font-size: 13.5px;
      position: relative;
      z-index: 1;
    }
    .foot-grid {
      display: grid;
      grid-template-columns: 1.3fr .8fr .9fr 1fr;
      gap: 28px;
      margin-bottom: 28px;
    }
    .site-footer h3 {
      color: var(--text);
      font-size: 16px;
      margin-bottom: 12px;
    }
    .site-footer a:hover { color: var(--cyan); }
    .foot-links { display: grid; gap: 8px; }
    .copyright {
      border-top: 1px solid rgba(86,160,255,.14);
      padding-top: 16px;
      display: flex;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
    }
    @media (max-width: 1440px) {
      .scene-grid { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 1024px) {
      :root { --space-section: 84px; }
      .topbar .container { grid-template-columns: 1fr auto; }
      .topbar-center { display: none; }
      .nav-links, .nav-cta { display: none; }
      .nav-toggle { display: inline-flex; }
      .hero-grid, .pain-grid, .split, .case-layout, .iface, .news-grid, .cta-box, .topic-grid {
        grid-template-columns: 1fr;
      }
      .hero { min-height: 0; }
      .hero-grid { min-height: 0; }
      .hero-side { padding-top: 0; }
      .side-card, .side-card:nth-child(2) { transform: none; margin: 0; }
      .timeline { grid-template-columns: 1fr 1fr; }
      .timeline::before { display: none; }
      .adv-grid { grid-template-columns: 1fr 1fr; }
      .product-grid { grid-template-columns: 1fr; }
      .stats { grid-template-columns: 1fr 1fr 1fr; }
      .story, .story:nth-child(even) { grid-template-columns: 1fr; }
      .story:nth-child(even) .story-media { order: 0; }
      .dash-grid { grid-template-columns: 1fr 1fr; }
      .foot-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .container { width: min(100% - 28px, var(--container)); }
      .topbar-right { display: none; }
      .topbar .container { grid-template-columns: 1fr; }
      .hero-main { padding: 24px 18px; }
      .hero-main h1 { font-size: 30px; }
      .slide img, .media-frame img, .story img, .news-main img, .product-card img, .product-card.featured img {
        min-height: 0;
        height: 220px;
      }
      .adv-grid, .stats, .scene-grid, .form-grid { grid-template-columns: 1fr; }
      .timeline { grid-template-columns: 1fr; }
      .dash-grid { grid-template-columns: 1fr; }
      .foot-grid { grid-template-columns: 1fr; }
      .glass-bar { grid-template-columns: 1fr; }
      .iface-table thead { display: none; }
      .iface-table tr { display: block; padding: 12px 0; border-bottom: 1px solid var(--line); }
      .iface-table td { display: block; padding: 4px 0; border: 0; }
      .iface-table td::before { color: var(--muted); margin-right: 8px; }
      .iface-table td:nth-child(1)::before { content: "接口："; }
      .iface-table td:nth-child(2)::before { content: "用途："; }
    }
    @media (max-width: 520px) {
      .hero-actions .btn { width: 100%; }
      .h2 { font-size: 24px; }
      .copyright { font-size: 12px; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after {
        animation: none !important;
        transition: none !important;
      }
    }

/* roulang page: index */
:root {
      --bg-0: #070B14;
      --bg-1: #0B1626;
      --bg-2: #102033;
      --blue: #2F7BFF;
      --cyan: #1EE0C6;
      --line: rgba(86,160,255,.28);
      --glass: rgba(14,28,48,.52);
      --text: #E7F0FF;
      --muted: #8EA3BB;
      --warn: #E7B64C;
      --danger: #E7B64C;
      --radius-card: 16px;
      --radius-btn: 10px;
      --shadow-glow: 0 0 24px rgba(30,224,198,.35);
      --container: 1240px;
      --nav-h: 80px;
      --top-h: 36px;
      --space-section: 104px;
      --space-card: 24px;
      --font: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "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;
      line-height: 1.75;
      color: var(--text);
      background: var(--bg-0);
      min-height: 100%;
      overflow-x: hidden;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font-family: inherit; }
    button { cursor: pointer; }
    h1, h2, h3, h4, p { margin: 0; }
    ul, ol { margin: 0; padding: 0; list-style: none; }
    table { border-collapse: collapse; width: 100%; }
    :focus-visible {
      outline: 2px solid var(--cyan);
      outline-offset: 3px;
    }
    .skip {
      position: absolute;
      left: 12px;
      top: -48px;
      z-index: 10000;
      background: var(--cyan);
      color: #06241f;
      padding: 10px 16px;
      border-radius: 10px;
      font-weight: 600;
    }
    .skip:focus { top: 12px; }
    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      z-index: 0;
      background-image:
        radial-gradient(ellipse 80% 50% at 12% -8%, rgba(47,123,255,.2), transparent 55%),
        radial-gradient(ellipse 50% 40% at 92% 8%, rgba(30,224,198,.08), transparent 50%),
        linear-gradient(rgba(86,160,255,.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(86,160,255,.045) 1px, transparent 1px);
      background-size: auto, auto, 72px 72px, 72px 72px;
    }
    .grid-lines {
      position: absolute;
      inset: 0;
      pointer-events: none;
      opacity: .35;
      background-image:
        radial-gradient(circle at 20% 30%, rgba(30,224,198,.12), transparent 22%),
        radial-gradient(circle at 70% 60%, rgba(47,123,255,.1), transparent 26%);
    }
    .container {
      width: min(var(--container), calc(100% - 40px));
      margin: 0 auto;
    }
    header {
      position: relative;
      z-index: 200;
    }
    .topbar {
      height: var(--top-h);
      background: #050910;
      border-bottom: 1px solid rgba(86,160,255,.16);
      color: var(--muted);
      font-size: 12px;
      letter-spacing: .02em;
    }
    .topbar-inner {
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }
    .topbar a {
      color: #b9cbe0;
      min-height: 32px;
      display: inline-flex;
      align-items: center;
    }
    .topbar a:hover { color: var(--cyan); }
    .topbar-mid {
      color: var(--cyan);
      opacity: .9;
    }
    .nav-main {
      height: var(--nav-h);
      background: rgba(7,11,20,.72);
      border-bottom: 1px solid transparent;
      transition: background .25s ease, border-color .25s ease, box-shadow .25s ease, backdrop-filter .25s ease;
    }
    .nav-main.is-stuck {
      position: sticky;
      top: 0;
      z-index: 300;
      background: rgba(8,16,30,.78);
      backdrop-filter: blur(16px) saturate(140%);
      -webkit-backdrop-filter: blur(16px) saturate(140%);
      border-bottom: 1px solid rgba(30,224,198,.22);
      box-shadow: 0 8px 28px rgba(0,0,0,.28), 0 0 18px rgba(47,123,255,.12);
    }
    .nav-inner {
      height: 100%;
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      min-height: 44px;
      flex-shrink: 0;
      font-weight: 700;
      letter-spacing: .04em;
      color: var(--text);
    }
    .logo-mark {
      width: 34px;
      height: 34px;
      color: var(--cyan);
      filter: drop-shadow(0 0 8px rgba(30,224,198,.45));
    }
    .logo-text { font-size: 16px; white-space: nowrap; }
    .nav-links {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 4px;
      flex: 1;
    }
    .nav-links a {
      position: relative;
      min-height: 44px;
      padding: 0 12px;
      display: inline-flex;
      align-items: center;
      color: #c5d5ea;
      font-size: 15px;
      font-weight: 500;
    }
    .nav-links a::after {
      content: "";
      position: absolute;
      left: 12px;
      right: 12px;
      bottom: 8px;
      height: 2px;
      border-radius: 99px;
      background: var(--cyan);
      transform: scaleX(0);
      transition: transform .2s ease;
      box-shadow: 0 0 8px rgba(30,224,198,.7);
    }
    .nav-links a:hover { color: #fff; }
    .nav-links a.is-active { color: #fff; }
    .nav-links a.is-active::after,
    .nav-links a:hover::after { transform: scaleX(1); }
    .nav-cta { margin-left: auto; flex-shrink: 0; }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 0 18px;
      border-radius: var(--radius-btn);
      border: 1px solid transparent;
      font-size: 14px;
      font-weight: 600;
      letter-spacing: .02em;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
    }
    .btn-glow {
      background: linear-gradient(180deg, #3af0d4 0%, var(--cyan) 100%);
      color: #06241f;
      box-shadow: var(--shadow-glow);
    }
    .btn-glow:hover {
      transform: translateY(-1px);
      box-shadow: 0 0 32px rgba(30,224,198,.55);
      background: #49f5dc;
    }
    .btn-glow:active { transform: translateY(0); }
    .btn-ghost {
      background: rgba(14,28,48,.45);
      border-color: rgba(255,255,255,.16);
      color: var(--text);
      backdrop-filter: blur(12px);
    }
    .btn-ghost:hover {
      transform: translateY(-1px);
      border-color: rgba(30,224,198,.5);
      box-shadow: 0 0 16px rgba(47,123,255,.2);
    }
    .hamburger {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 10px;
      border: 1px solid var(--line);
      background: rgba(14,28,48,.5);
      color: var(--text);
      align-items: center;
      justify-content: center;
      margin-left: auto;
    }
    .hamburger span,
    .hamburger span::before,
    .hamburger span::after {
      display: block;
      width: 18px;
      height: 2px;
      background: currentColor;
      border-radius: 2px;
      position: relative;
    }
    .hamburger span::before,
    .hamburger span::after {
      content: "";
      position: absolute;
      left: 0;
    }
    .hamburger span::before { top: -6px; }
    .hamburger span::after { top: 6px; }
    .drawer-mask {
      position: fixed;
      inset: 0;
      background: rgba(2,6,12,.62);
      opacity: 0;
      pointer-events: none;
      transition: opacity .25s ease;
      z-index: 350;
    }
    .drawer-mask.open { opacity: 1; pointer-events: auto; }
    .drawer {
      position: fixed;
      top: 0;
      right: 0;
      width: min(84vw, 360px);
      height: 100%;
      background: #0a1524;
      border-left: 1px solid var(--line);
      transform: translateX(100%);
      transition: transform .28s ease;
      z-index: 400;
      padding: 28px 22px;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .drawer.open { transform: translateX(0); }
    .drawer a {
      min-height: 48px;
      display: flex;
      align-items: center;
      padding: 0 12px;
      border-radius: 10px;
      color: var(--text);
    }
    .drawer a:hover, .drawer a.is-active { background: rgba(47,123,255,.12); color: var(--cyan); }
    .drawer-close {
      align-self: flex-end;
      width: 44px;
      height: 44px;
      border: 1px solid var(--line);
      background: transparent;
      color: var(--text);
      border-radius: 10px;
    }
    main { position: relative; z-index: 1; }
    section { position: relative; }
    .section {
      padding: var(--space-section) 0;
    }
    .section-alt { background: var(--bg-1); }
    .section-raise { background: var(--bg-2); }
    .kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--cyan);
      font-size: 13px;
      font-weight: 600;
      letter-spacing: .12em;
      margin-bottom: 12px;
    }
    .kicker::before {
      content: "";
      width: 18px;
      height: 2px;
      background: var(--cyan);
      box-shadow: 0 0 8px var(--cyan);
    }
    .h2 {
      font-size: 32px;
      line-height: 1.28;
      font-weight: 700;
      letter-spacing: .01em;
      margin-bottom: 16px;
    }
    .h3 {
      font-size: 20px;
      line-height: 1.4;
      font-weight: 650;
      margin-bottom: 8px;
    }
    .lead {
      color: var(--muted);
      font-size: 16px;
      max-width: 760px;
    }
    .section-head { margin-bottom: 40px; }
    .glass {
      background: var(--glass);
      backdrop-filter: blur(16px) saturate(140%);
      -webkit-backdrop-filter: blur(16px) saturate(140%);
      border: 1px solid rgba(255,255,255,.12);
      border-radius: var(--radius-card);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.06), 0 12px 40px rgba(0,0,0,.22);
    }
    .badge {
      display: inline-flex;
      align-items: center;
      min-height: 28px;
      padding: 0 10px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: rgba(47,123,255,.12);
      color: #cfe2ff;
      font-size: 12px;
      font-weight: 500;
    }
    .num {
      font-variant-numeric: tabular-nums;
      font-feature-settings: "tnum";
    }
    .hero {
      min-height: 720px;
      height: calc(100vh - var(--top-h) - var(--nav-h));
      max-height: 860px;
      overflow: hidden;
    }
    .hero-track { position: relative; height: 100%; }
    .hero-slide {
      position: absolute;
      inset: 0;
      opacity: 0;
      pointer-events: none;
      transition: opacity .55s ease;
    }
    .hero-slide.is-on {
      opacity: 1;
      pointer-events: auto;
      z-index: 1;
    }
    .hero-slide img.hero-bg {
      width: 100%;
      height: 100%;
      object-fit: cover;
      filter: saturate(1.05) contrast(1.05);
    }
    .hero-mask {
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(7,11,20,.82) 0%, rgba(7,11,20,.58) 48%, rgba(7,11,20,.34) 100%),
        linear-gradient(180deg, rgba(7,11,20,.2) 0%, rgba(7,11,20,.55) 100%);
    }
    .hero-content {
      position: absolute;
      inset: 0;
      display: flex;
      align-items: center;
      z-index: 2;
    }
    .hero-stack {
      display: grid;
      grid-template-columns: minmax(0, 1.25fr) minmax(260px, .78fr);
      gap: 22px;
      align-items: stretch;
      width: 100%;
    }
    .hero-main {
      padding: 32px 32px 28px;
    }
    .hero h1 {
      font-size: 46px;
      line-height: 1.22;
      font-weight: 700;
      margin: 8px 0 18px;
    }
    .hero-title {
      font-size: 38px;
      line-height: 1.25;
      font-weight: 700;
      margin: 8px 0 16px;
    }
    .hero-copy {
      color: #c9d8ec;
      font-size: 16px;
      max-width: 640px;
      margin-bottom: 24px;
    }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-side {
      display: flex;
      flex-direction: column;
      justify-content: center;
      gap: 16px;
      padding-top: 36px;
    }
    .hero-side .mini {
      padding: 18px 20px;
    }
    .hero-side .mini:first-child { transform: translateX(18px); }
    .hero-side .mini:last-child { transform: translateX(-10px) translateY(10px); }
    .mini-label { color: var(--muted); font-size: 13px; }
    .mini-value {
      font-size: 28px;
      font-weight: 700;
      margin: 4px 0;
      color: var(--cyan);
    }
    .mini p { color: #c5d5ea; font-size: 14px; }
    .hero-ctrl {
      position: absolute;
      z-index: 3;
      top: 50%;
      transform: translateY(-50%);
      width: 44px;
      height: 44px;
      border-radius: 50%;
      border: 1px solid rgba(255,255,255,.16);
      background: rgba(14,28,48,.5);
      color: #fff;
      backdrop-filter: blur(10px);
    }
    .hero-ctrl:hover { border-color: var(--cyan); box-shadow: var(--shadow-glow); }
    .hero-prev { left: 18px; }
    .hero-next { right: 18px; }
    .hero-dots {
      position: absolute;
      z-index: 3;
      left: 50%;
      bottom: 22px;
      transform: translateX(-50%);
      display: flex;
      gap: 8px;
    }
    .hero-dots button {
      width: 28px;
      height: 4px;
      border: 0;
      border-radius: 99px;
      background: rgba(255,255,255,.28);
      min-height: 44px;
      padding: 20px 0;
      background-clip: content-box;
    }
    .hero-dots button.is-on {
      background: var(--cyan);
      background-clip: content-box;
      box-shadow: 0 0 12px rgba(30,224,198,.7);
    }
    .split {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 36px;
      align-items: center;
    }
    .split-rev { grid-template-columns: .95fr 1.05fr; }
    .media {
      overflow: hidden;
      border-radius: var(--radius-card);
      border: 1px solid rgba(255,255,255,.12);
      position: relative;
      min-height: 320px;
    }
    .media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      min-height: 320px;
    }
    .pain-list { display: grid; gap: 14px; }
    .pain-item {
      display: grid;
      grid-template-columns: 44px 1fr;
      gap: 14px;
      padding: 18px 20px;
    }
    .pain-no {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      display: grid;
      place-items: center;
      color: var(--cyan);
      border: 1px solid var(--line);
      background: rgba(30,224,198,.08);
      font-weight: 700;
      font-variant-numeric: tabular-nums;
    }
    .pain-item h3 { font-size: 18px; margin-bottom: 4px; }
    .pain-item p { color: var(--muted); font-size: 15px; }
    .spec-list { display: grid; gap: 14px; margin-top: 20px; }
    .spec {
      padding: 16px 18px;
      border-left: 2px solid var(--cyan);
    }
    .spec h3 { font-size: 18px; }
    .spec p { color: var(--muted); font-size: 15px; }
    .timeline {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      position: relative;
    }
    .timeline::before {
      content: "";
      position: absolute;
      top: 27px;
      left: 6%;
      right: 6%;
      height: 1px;
      background: linear-gradient(90deg, transparent, var(--cyan), var(--blue), transparent);
      box-shadow: 0 0 10px rgba(30,224,198,.35);
    }
    .step {
      padding: 20px 18px 22px;
      position: relative;
    }
    .step-index {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: #07131f;
      border: 1px solid var(--cyan);
      color: var(--cyan);
      font-size: 12px;
      font-weight: 700;
      margin-bottom: 16px;
      position: relative;
      z-index: 1;
      font-variant-numeric: tabular-nums;
    }
    .step h3 { font-size: 18px; }
    .step p { color: var(--muted); font-size: 14px; }
    .cards-6 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }
    .adv {
      padding: 24px 22px;
      min-height: 230px;
      background-image: linear-gradient(180deg, rgba(255,255,255,.03), transparent 40%),
        linear-gradient(rgba(86,160,255,.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(86,160,255,.05) 1px, transparent 1px);
      background-size: auto, 18px 18px, 18px 18px;
      transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
    }
    .adv:hover {
      transform: translateY(-3px);
      border-color: rgba(30,224,198,.35);
      box-shadow: 0 0 24px rgba(47,123,255,.16);
    }
    .ico {
      width: 24px;
      height: 24px;
      color: var(--cyan);
      margin-bottom: 14px;
    }
    .adv h3 { font-size: 18px; margin-bottom: 8px; }
    .adv p { color: var(--muted); font-size: 14px; }
    .adv .result {
      margin-top: 12px;
      color: #d7ecff;
      font-size: 13px;
      font-weight: 600;
    }
    .products {
      display: grid;
      grid-template-columns: 1.35fr 1fr 1fr;
      gap: 22px;
    }
    .product {
      overflow: hidden;
      display: flex;
      flex-direction: column;
      min-height: 460px;
    }
    .product img {
      width: 100%;
      height: 210px;
      object-fit: cover;
    }
    .product-body { padding: 22px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
    .product.featured img { height: 250px; }
    .params { color: var(--muted); font-size: 14px; display: grid; gap: 6px; }
    .params li { padding-left: 14px; position: relative; }
    .params li::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--cyan);
      position: absolute;
      left: 0;
      top: 8px;
    }
    .cases {
      background: #050910;
      padding: 108px 0;
      overflow: hidden;
    }
    .cases::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(180deg, rgba(5,9,16,.4), rgba(5,9,16,.86)),
        url("/assets/images/b0585f7f394001ae.jpg") center/cover;
      opacity: .45;
    }
    .cases::after {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(115deg, transparent 40%, rgba(30,224,198,.05) 41%, transparent 42%),
        linear-gradient(70deg, transparent 62%, rgba(47,123,255,.07) 63%, transparent 64%);
      opacity: .8;
    }
    .cases .container { position: relative; z-index: 1; }
    .case-grid {
      display: grid;
      grid-template-columns: 1.4fr .8fr;
      gap: 22px;
    }
    .case-big, .case-small { padding: 28px 26px; }
    .case-smalls { display: grid; gap: 16px; }
    .quote-line {
      margin-top: 22px;
      padding-top: 16px;
      border-top: 1px solid rgba(30,224,198,.2);
      color: #d5e6ff;
      font-size: 15px;
    }
    .data-strip {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 18px;
    }
    .data-chip {
      padding: 8px 12px;
      border-radius: 999px;
      background: rgba(30,224,198,.1);
      border: 1px solid rgba(30,224,198,.25);
      font-size: 13px;
      color: #d7fff7;
    }
    .stats {
      padding: 42px 0;
      background: linear-gradient(180deg, #0a1628, #0d1c31);
      border-block: 1px solid var(--line);
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 12px;
    }
    .stat {
      text-align: center;
      padding: 18px 8px;
    }
    .stat b {
      display: block;
      font-size: 34px;
      color: var(--cyan);
      font-weight: 700;
      letter-spacing: .02em;
    }
    .stat span { color: var(--muted); font-size: 13px; }
    .stories {
      display: grid;
      gap: 24px;
    }
    .story {
      display: grid;
      grid-template-columns: 1.05fr 1fr;
      gap: 0;
      overflow: hidden;
    }
    .story:nth-child(even) { grid-template-columns: 1fr 1.05fr; }
    .story:nth-child(even) .story-media { order: 2; }
    .story img { width: 100%; height: 100%; object-fit: cover; min-height: 280px; }
    .story-body { padding: 32px 28px; }
    .story-body p { color: var(--muted); }
    .reviews-wrap { overflow: hidden; }
    .reviews {
      display: grid;
      grid-auto-flow: column;
      grid-auto-columns: minmax(280px, 1fr);
      gap: 18px;
      overflow-x: auto;
      scroll-snap-type: x mandatory;
      padding-bottom: 8px;
    }
    .review {
      scroll-snap-align: start;
      padding: 22px 20px;
      min-height: 210px;
    }
    .review p { color: #d5e4f7; font-size: 15px; }
    .review-meta {
      margin-top: 16px;
      color: var(--muted);
      font-size: 13px;
    }
    .chips {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 22px;
    }
    .chip {
      min-height: 40px;
      padding: 0 14px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: rgba(16,32,51,.7);
      color: var(--text);
      font-size: 13px;
    }
    .chip.is-on, .chip:hover {
      border-color: var(--cyan);
      color: var(--cyan);
      box-shadow: 0 0 12px rgba(30,224,198,.2);
    }
    .matrix {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 16px;
    }
    .matrix .cell {
      grid-column: span 2;
      padding: 22px 20px;
    }
    .cell h3 { font-size: 18px; }
    .cell p { color: var(--muted); font-size: 14px; }
    .bound { color: #e7d7a4 !important; margin-top: 8px; }
    .tabs { display: flex; gap: 10px; margin-bottom: 22px; }
    .tab {
      min-height: 44px;
      padding: 0 16px;
      border-radius: 10px;
      border: 1px solid var(--line);
      background: rgba(14,28,48,.4);
      color: var(--text);
    }
    .tab.is-on {
      background: rgba(30,224,198,.12);
      border-color: var(--cyan);
      color: var(--cyan);
    }
    .topic-pane { display: none; }
    .topic-pane.is-on { display: grid; }
    .topic-grid {
      grid-template-columns: 1.1fr .9fr;
      gap: 24px;
      align-items: center;
    }
    .points { display: grid; gap: 12px; }
    .point { padding: 16px 18px; }
    .point h3 { font-size: 18px; }
    .point p { color: var(--muted); font-size: 14px; }
    .iface {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 24px;
    }
    .iface-item {
      display: grid;
      grid-template-columns: 180px 1fr;
      gap: 12px;
      padding: 14px 0;
      border-bottom: 1px solid rgba(86,160,255,.16);
    }
    .iface-item b { color: #dbe8fb; font-size: 14px; }
    .iface-item span { color: var(--muted); font-size: 14px; }
    .guard-notes { display: grid; gap: 12px; }
    .news-grid {
      display: grid;
      grid-template-columns: 1.25fr 1fr;
      grid-template-rows: auto auto auto;
      gap: 18px;
    }
    .news-card {
      overflow: hidden;
      display: grid;
      grid-template-columns: 140px 1fr;
    }
    .news-card.big {
      grid-row: span 3;
      grid-template-columns: 1fr;
    }
    .news-card img { width: 100%; height: 100%; object-fit: cover; min-height: 96px; }
    .news-card.big img { min-height: 240px; max-height: 280px; }
    .news-body { padding: 18px 18px 20px; }
    .news-body time { color: var(--muted); font-size: 12px; }
    .news-body h3 { font-size: 18px; margin: 6px 0 8px; }
    .news-body p { color: var(--muted); font-size: 14px; }
    .more-link {
      display: inline-flex;
      align-items: center;
      min-height: 44px;
      color: var(--cyan);
      font-weight: 600;
    }
    .board { background: #050910; }
    .dash {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }
    .kpi {
      padding: 20px 18px;
      background: rgba(10,22,40,.7);
    }
    .kpi .lab { color: var(--muted); font-size: 13px; }
    .kpi .val {
      font-size: 30px;
      font-weight: 700;
      margin: 6px 0 12px;
      color: #eaf6ff;
    }
    .bar {
      height: 6px;
      border-radius: 99px;
      background: rgba(255,255,255,.08);
      overflow: hidden;
    }
    .bar > span {
      display: block;
      height: 100%;
      border-radius: 99px;
      background: linear-gradient(90deg, var(--blue), var(--cyan));
    }
    .bar.warn > span { background: var(--warn); }
    .faq-list { display: grid; gap: 10px; }
    .faq-item {
      border: 1px solid rgba(255,255,255,.1);
      border-radius: 14px;
      background: rgba(11,22,38,.72);
      overflow: hidden;
    }
    .faq-item[open] { box-shadow: inset 0 -1px 0 rgba(30,224,198,.18); }
    .faq-item summary {
      list-style: none;
      cursor: pointer;
      min-height: 56px;
      padding: 14px 52px 14px 20px;
      position: relative;
      font-weight: 600;
      font-size: 16px;
    }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after {
      content: "";
      position: absolute;
      right: 20px;
      top: 50%;
      width: 10px;
      height: 10px;
      border-right: 2px solid var(--cyan);
      border-bottom: 2px solid var(--cyan);
      transform: translateY(-70%) rotate(45deg);
      transition: transform .2s ease;
    }
    .faq-item[open] summary::after { transform: translateY(-20%) rotate(225deg); }
    .faq-item .ans {
      padding: 0 20px 18px;
      color: var(--muted);
      border-top: 1px solid rgba(30,224,198,.12);
      margin-top: -4px;
      padding-top: 14px;
    }
    .cta {
      padding: 96px 0;
      background:
        radial-gradient(600px 180px at 20% 0%, rgba(30,224,198,.12), transparent 60%),
        linear-gradient(180deg, #071018, #0a182b);
      border-top: 1px solid rgba(30,224,198,.2);
      box-shadow: inset 0 1px 0 rgba(30,224,198,.12);
    }
    .cta-grid {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 28px;
      align-items: start;
    }
    .cta-box { padding: 28px; }
    form { display: grid; gap: 14px; }
    label { font-size: 13px; color: #c5d5ea; }
    .field { display: grid; gap: 6px; }
    input, select {
      min-height: 44px;
      border-radius: 10px;
      border: 1px solid rgba(255,255,255,.14);
      background: rgba(7,14,26,.75);
      color: var(--text);
      padding: 0 12px;
    }
    input:focus, select:focus {
      border-color: var(--cyan);
    }
    .field.error input, .field.error select { border-color: var(--warn); }
    .err {
      color: var(--warn);
      font-size: 12px;
      min-height: 16px;
    }
    .form-note { color: var(--muted); font-size: 13px; }
    .form-ok {
      display: none;
      padding: 14px 16px;
      border-radius: 10px;
      border: 1px solid rgba(30,224,198,.35);
      background: rgba(30,224,198,.08);
      color: #d9fff7;
    }
    .form-ok.show { display: block; }
    .hotline-side {
      margin-top: 18px;
      color: var(--muted);
      font-size: 14px;
    }
    .hotline-side a { color: var(--cyan); font-weight: 600; }
    footer {
      background: #04070d;
      border-top: 1px solid rgba(86,160,255,.14);
      padding: 56px 0 24px;
      color: #93a7be;
      font-size: 13px;
      position: relative;
      z-index: 1;
    }
    .foot-grid {
      display: grid;
      grid-template-columns: 1.3fr 1fr 1fr 1.1fr;
      gap: 28px;
      margin-bottom: 32px;
    }
    .foot-brand strong {
      display: block;
      color: var(--text);
      font-size: 16px;
      margin-bottom: 10px;
    }
    footer a { color: #b7c8db; min-height: 32px; display: inline-flex; align-items: center; }
    footer a:hover { color: var(--cyan); }
    .foot-title { color: #e7f0ff; font-weight: 600; margin-bottom: 10px; font-size: 14px; }
    .foot-copy {
      border-top: 1px solid rgba(255,255,255,.06);
      padding-top: 16px;
      display: flex;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
    }
    @media (max-width: 1440px) {
      .hero h1 { font-size: 42px; }
    }
    @media (max-width: 1024px) {
      :root { --space-section: 88px; --nav-h: 72px; }
      .hero { min-height: 640px; height: auto; max-height: none; padding-bottom: 64px; }
      .hero-content { position: relative; padding: 48px 0 24px; }
      .hero-stack { grid-template-columns: 1fr; }
      .hero-side { flex-direction: row; padding-top: 0; }
      .hero-side .mini:first-child, .hero-side .mini:last-child { transform: none; flex: 1; }
      .split, .split-rev, .case-grid, .topic-grid, .iface, .cta-grid { grid-template-columns: 1fr; }
      .timeline { grid-template-columns: 1fr 1fr; }
      .timeline::before { display: none; }
      .cards-6 { grid-template-columns: 1fr 1fr; }
      .products { grid-template-columns: 1fr; }
      .stats-grid { grid-template-columns: repeat(3, 1fr); }
      .matrix { grid-template-columns: 1fr 1fr; }
      .matrix .cell { grid-column: auto; }
      .dash { grid-template-columns: 1fr 1fr; }
      .news-grid { grid-template-columns: 1fr 1fr; }
      .news-card.big { grid-row: auto; grid-column: 1 / -1; }
      .foot-grid { grid-template-columns: 1fr 1fr; }
      .story, .story:nth-child(even) { grid-template-columns: 1fr; }
      .story:nth-child(even) .story-media { order: 0; }
    }
    @media (max-width: 768px) {
      .topbar-mid, .topbar-mail { display: none; }
      .nav-links, .nav-cta { display: none; }
      .hamburger { display: inline-flex; }
      .container { width: min(var(--container), calc(100% - 28px)); }
      .hero h1, .hero-title { font-size: 30px; }
      .h2 { font-size: 26px; }
      .hero-side { flex-direction: column; }
      .hero-ctrl { display: none; }
      .cards-6, .stats-grid, .dash, .news-grid, .foot-grid { grid-template-columns: 1fr; }
      .timeline { grid-template-columns: 1fr; }
      .iface-item { grid-template-columns: 1fr; gap: 4px; }
      .news-card { grid-template-columns: 1fr; }
      .logo-text { font-size: 14px; }
    }
    @media (max-width: 520px) {
      .hero { min-height: 0; }
      .hero-main { padding: 22px 18px; }
      .hero-actions .btn { width: 100%; }
      .h2 { font-size: 24px; }
      .mini-value { font-size: 24px; }
      .matrix { grid-template-columns: 1fr; }
    }
    @media (max-width: 375px) {
      body { font-size: 15px; }
      .logo-text { max-width: 190px; white-space: normal; line-height: 1.25; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after {
        animation: none !important;
        transition: none !important;
      }
    }