/* roulang page: index */
:root {
      --bg: #070b17;
      --bg-soft: #0c1223;
      --panel: #10182c;
      --panel-light: #151f38;
      --primary: #5b7cfa;
      --primary-dark: #3f5dde;
      --cyan: #62d9ff;
      --text: #f5f7ff;
      --muted: #9ba8c5;
      --muted-2: #71809e;
      --line: rgba(166, 184, 255, .14);
      --line-bright: rgba(166, 184, 255, .28);
      --radius-lg: 28px;
      --radius-md: 18px;
      --radius-sm: 12px;
      --shadow: 0 24px 70px rgba(0, 0, 0, .28);
      --container: 1200px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--text);
      background:
        radial-gradient(circle at 84% 4%, rgba(73, 103, 255, .18), transparent 25rem),
        radial-gradient(circle at 4% 30%, rgba(34, 177, 232, .08), transparent 22rem),
        var(--bg);
      font-family: "Noto Sans SC", "Inter", sans-serif;
      font-size: 16px;
      line-height: 1.75;
      overflow-x: hidden;
    }
    a { color: inherit; text-decoration: none; transition: .25s ease; }
    img { display: block; max-width: 100%; }
    button, input, textarea { font: inherit; }
    button:focus, a:focus, input:focus, textarea:focus {
      outline: 3px solid rgba(98, 217, 255, .35);
      outline-offset: 3px;
    }
    .container {
      width: min(var(--container), calc(100% - 48px));
      margin: 0 auto;
    }
    .section {
      position: relative;
      padding: 112px 0;
    }
    .section-soft {
      background: linear-gradient(180deg, rgba(15, 23, 45, .56), rgba(9, 14, 28, .35));
      border-top: 1px solid rgba(166, 184, 255, .06);
      border-bottom: 1px solid rgba(166, 184, 255, .06);
    }
    .section-head {
      max-width: 720px;
      margin-bottom: 48px;
    }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      color: var(--cyan);
      font-size: 12px;
      font-weight: 800;
      letter-spacing: .16em;
      text-transform: uppercase;
      margin-bottom: 15px;
    }
    .eyebrow::before {
      content: "";
      width: 24px;
      height: 1px;
      background: var(--cyan);
      box-shadow: 0 0 14px var(--cyan);
    }
    h1, h2, h3, p { margin-top: 0; }
    h1, h2, h3 { line-height: 1.2; letter-spacing: -.035em; }
    h1 {
      max-width: 760px;
      margin-bottom: 24px;
      font-size: clamp(2.55rem, 6vw, 5.8rem);
      font-weight: 800;
    }
    h2 {
      margin-bottom: 18px;
      font-size: clamp(2rem, 4vw, 3.4rem);
      font-weight: 800;
    }
    h3 {
      margin-bottom: 12px;
      font-size: 1.25rem;
      font-weight: 700;
    }
    .lead {
      max-width: 720px;
      color: var(--muted);
      font-size: 1.08rem;
      line-height: 1.9;
    }
    .muted { color: var(--muted); }
    .tiny { color: var(--muted-2); font-size: .84rem; }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 30;
      border-bottom: 1px solid rgba(166, 184, 255, .1);
      background: rgba(7, 11, 23, .82);
      backdrop-filter: blur(22px);
    }
    .nav-wrap {
      min-height: 78px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 28px;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 11px;
      min-width: max-content;
      font-size: 1.12rem;
      font-weight: 800;
      letter-spacing: -.03em;
    }
    .brand-mark {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      border-radius: 11px;
      color: white;
      background: linear-gradient(135deg, var(--primary), var(--cyan));
      box-shadow: 0 9px 28px rgba(91, 124, 250, .36);
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .main-nav a {
      padding: 10px 14px;
      color: var(--muted);
      border-radius: 10px;
      font-size: .93rem;
      font-weight: 600;
    }
    .main-nav a:hover, .main-nav a.active {
      color: var(--text);
      background: rgba(116, 139, 255, .12);
    }
    .nav-download {
      display: inline-flex !important;
      align-items: center;
      gap: 8px;
      color: #fff !important;
      background: var(--primary) !important;
      box-shadow: 0 10px 24px rgba(91, 124, 250, .25);
    }
    .nav-download:hover { background: var(--primary-dark) !important; transform: translateY(-2px); }
    .nav-toggle {
      display: none;
      border: 1px solid var(--line);
      color: var(--text);
      background: transparent;
      border-radius: 10px;
      padding: 8px 11px;
      cursor: pointer;
    }

    .hero {
      min-height: 720px;
      display: flex;
      align-items: center;
      padding: 90px 0 84px;
      overflow: hidden;
    }
    .hero::before {
      content: "";
      position: absolute;
      width: 560px;
      height: 560px;
      right: -170px;
      top: 80px;
      border-radius: 50%;
      background: rgba(84, 114, 255, .15);
      filter: blur(90px);
      pointer-events: none;
    }
    .hero-grid {
      position: relative;
      display: grid;
      grid-template-columns: 1.08fr .92fr;
      gap: 26px;
      align-items: stretch;
    }
    .hero-main {
      min-height: 520px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      padding: clamp(30px, 5vw, 62px);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background:
        linear-gradient(140deg, rgba(31, 48, 95, .82), rgba(15, 23, 45, .88)),
        url("https://images.unsplash.com/photo-1451187580459-43490279c0fa?auto=format&fit=crop&w=1600&q=85") center/cover;
      box-shadow: var(--shadow);
      overflow: hidden;
    }
    .hero-main::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(7, 11, 23, .1), rgba(7, 11, 23, .64));
      pointer-events: none;
    }
    .hero-main > * { position: relative; z-index: 1; }
    .hero-main .eyebrow { color: #b9eaff; }
    .hero-main .hero-description {
      max-width: 670px;
      color: #d4ddf7;
      font-size: 1.06rem;
      line-height: 1.9;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 30px;
    }
    .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 48px;
      padding: 0 20px;
      border: 1px solid transparent;
      border-radius: 12px;
      font-weight: 700;
      cursor: pointer;
      transition: .25s ease;
    }
    .button-primary {
      color: white;
      background: var(--primary);
      box-shadow: 0 12px 30px rgba(91, 124, 250, .28);
    }
    .button-primary:hover { color: white; background: var(--primary-dark); transform: translateY(-2px); }
    .button-ghost {
      color: var(--text);
      border-color: var(--line-bright);
      background: rgba(255,255,255,.04);
    }
    .button-ghost:hover { color: white; border-color: var(--cyan); background: rgba(98, 217, 255, .08); }
    .hero-note {
      display: flex;
      align-items: center;
      gap: 10px;
      color: #b4c0df;
      font-size: .9rem;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #42e3a3;
      box-shadow: 0 0 14px #42e3a3;
    }
    .hero-side {
      display: grid;
      grid-template-rows: 1fr 1fr;
      gap: 26px;
    }
    .bento-card {
      position: relative;
      padding: 30px;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: linear-gradient(145deg, rgba(21, 31, 56, .92), rgba(12, 18, 35, .9));
      box-shadow: 0 20px 55px rgba(0,0,0,.16);
      overflow: hidden;
    }
    .bento-card:hover, .feature-card:hover, .security-card:hover, .news-card:hover {
      border-color: rgba(98, 217, 255, .42);
      transform: translateY(-5px);
      box-shadow: 0 24px 60px rgba(0,0,0,.28);
    }
    .bento-card, .feature-card, .security-card, .news-card { transition: .28s ease; }
    .bento-card i {
      color: var(--cyan);
      font-size: 1.5rem;
      margin-bottom: 30px;
    }
    .metric-large {
      margin: 4px 0 8px;
      color: white;
      font-size: 3.2rem;
      font-weight: 800;
      letter-spacing: -.06em;
    }
    .signal-bars {
      display: flex;
      align-items: end;
      gap: 6px;
      height: 48px;
      margin-top: 22px;
    }
    .signal-bars span {
      width: 13px;
      border-radius: 4px 4px 2px 2px;
      background: linear-gradient(to top, var(--primary), var(--cyan));
      animation: signal 2.4s ease-in-out infinite alternate;
    }
    .signal-bars span:nth-child(1) { height: 22px; }
    .signal-bars span:nth-child(2) { height: 35px; animation-delay: .2s; }
    .signal-bars span:nth-child(3) { height: 28px; animation-delay: .4s; }
    .signal-bars span:nth-child(4) { height: 46px; animation-delay: .6s; }
    .signal-bars span:nth-child(5) { height: 38px; animation-delay: .8s; }
    @keyframes signal { to { opacity: .52; transform: scaleY(.72); } }

    .ticker {
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
      background: rgba(10, 16, 31, .78);
      overflow: hidden;
    }
    .ticker-track {
      display: flex;
      gap: 44px;
      width: max-content;
      padding: 15px 0;
      color: var(--muted);
      font-size: .84rem;
      animation: ticker 26s linear infinite;
    }
    .ticker-track span { white-space: nowrap; }
    .ticker-track i { color: var(--cyan); margin-right: 8px; }
    @keyframes ticker { from { transform: translateX(0); } to { transform: translateX(-35%); } }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1px;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      overflow: hidden;
      background: var(--line);
    }
    .stat-item {
      padding: 30px 24px;
      background: rgba(16, 24, 44, .88);
    }
    .stat-number {
      display: block;
      margin-bottom: 8px;
      color: #fff;
      font-size: 2.25rem;
      font-weight: 800;
      letter-spacing: -.05em;
    }
    .stat-label { color: var(--muted); font-size: .9rem; }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .feature-card {
      padding: 30px;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: rgba(16, 24, 44, .72);
    }
    .icon-box {
      width: 48px;
      height: 48px;
      display: grid;
      place-items: center;
      margin-bottom: 25px;
      color: var(--cyan);
      border: 1px solid rgba(98, 217, 255, .2);
      border-radius: 14px;
      background: rgba(98, 217, 255, .08);
      font-size: 1.15rem;
    }
    .feature-card p, .security-card p, .news-card p { color: var(--muted); font-size: .93rem; line-height: 1.8; }
    .feature-tag {
      display: inline-flex;
      margin-top: 20px;
      padding: 5px 10px;
      color: #bcefff;
      border-radius: 999px;
      background: rgba(98, 217, 255, .08);
      font-size: .76rem;
    }

    .matrix {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }
    .matrix-item {
      display: flex;
      gap: 22px;
      padding: 26px;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: linear-gradient(120deg, rgba(21, 31, 56, .78), rgba(11, 17, 32, .85));
    }
    .matrix-number {
      flex: 0 0 42px;
      height: 42px;
      display: grid;
      place-items: center;
      color: var(--cyan);
      border: 1px solid rgba(98, 217, 255, .28);
      border-radius: 12px;
      font-weight: 800;
    }
    .matrix-item p { margin: 0; color: var(--muted); font-size: .92rem; }

    .compare-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }
    .compare-card {
      padding: 34px;
      border-radius: var(--radius-md);
      border: 1px solid var(--line);
      background: rgba(16, 24, 44, .72);
    }
    .compare-card.highlight {
      border-color: rgba(91, 124, 250, .58);
      background: linear-gradient(145deg, rgba(54, 72, 153, .32), rgba(16, 24, 44, .8));
      box-shadow: 0 20px 50px rgba(56, 77, 189, .18);
    }
    .compare-title {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 24px;
    }
    .compare-title span:last-child {
      color: var(--cyan);
      font-size: .78rem;
      font-weight: 700;
    }
    .compare-list { margin: 0; list-style: none; }
    .compare-list li {
      display: flex;
      gap: 12px;
      padding: 13px 0;
      color: var(--muted);
      border-top: 1px solid var(--line);
      font-size: .92rem;
    }
    .compare-list i { margin-top: 5px; color: #42e3a3; }

    .timeline {
      position: relative;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .timeline::before {
      content: "";
      position: absolute;
      top: 21px;
      left: 10%;
      right: 10%;
      height: 1px;
      background: linear-gradient(90deg, var(--primary), var(--cyan));
      opacity: .48;
    }
    .timeline-item { position: relative; z-index: 1; }
    .timeline-point {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      margin-bottom: 22px;
      color: white;
      border: 5px solid var(--bg);
      border-radius: 50%;
      background: var(--primary);
      box-shadow: 0 0 0 1px rgba(91,124,250,.55), 0 0 22px rgba(91,124,250,.42);
    }
    .timeline-item p { color: var(--muted); font-size: .9rem; line-height: 1.75; }

    .node-panel {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 28px;
      padding: 38px;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: linear-gradient(135deg, rgba(22, 33, 63, .92), rgba(10, 16, 31, .88));
    }
    .node-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .node {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 15px 17px;
      border: 1px solid var(--line);
      border-radius: 12px;
      background: rgba(255,255,255,.035);
    }
    .node-name { display: flex; align-items: center; gap: 9px; font-size: .9rem; }
    .node-name i { color: var(--cyan); }
    .node-state { color: #42e3a3; font-size: .78rem; }
    .node-visual {
      min-height: 245px;
      display: flex;
      align-items: center;
      justify-content: center;
      border: 1px solid rgba(98,217,255,.14);
      border-radius: 20px;
      background:
        radial-gradient(circle, rgba(91,124,250,.28) 0 2px, transparent 3px) 0 0/22px 22px,
        linear-gradient(145deg, rgba(98,217,255,.08), transparent);
    }
    .orbit {
      position: relative;
      width: 150px;
      height: 150px;
      border: 1px solid rgba(98,217,255,.5);
      border-radius: 50%;
      box-shadow: 0 0 45px rgba(91,124,250,.28);
    }
    .orbit::before, .orbit::after {
      content: "";
      position: absolute;
      inset: 18px;
      border: 1px solid rgba(91,124,250,.42);
      border-radius: 50%;
      transform: rotate(58deg) scaleX(1.7);
    }
    .orbit::after { transform: rotate(-58deg) scaleX(1.7); }
    .orbit-core {
      position: absolute;
      inset: 52px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--cyan), var(--primary));
      box-shadow: 0 0 28px rgba(98,217,255,.7);
    }

    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .news-card {
      padding: 26px;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: rgba(16, 24, 44, .72);
    }
    .news-meta {
      display: flex;
      justify-content: space-between;
      margin-bottom: 24px;
      color: var(--muted-2);
      font-size: .78rem;
    }
    .news-meta span:first-child { color: var(--cyan); }
    .news-card a { display: inline-flex; align-items: center; gap: 8px; color: #c9d4ff; font-size: .88rem; font-weight: 700; }
    .news-card a:hover { color: var(--cyan); }

    .security-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .security-card {
      padding: 28px;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: rgba(13, 20, 38, .7);
    }

    .faq-list { max-width: 900px; }
    .faq-item {
      border-top: 1px solid var(--line);
      padding: 24px 0;
    }
    .faq-item:last-child { border-bottom: 1px solid var(--line); }
    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      cursor: pointer;
      color: var(--text);
      font-weight: 700;
    }
    .faq-question i { color: var(--cyan); transition: .25s ease; }
    .faq-answer {
      max-width: 760px;
      margin: 13px 0 0;
      color: var(--muted);
      font-size: .93rem;
      line-height: 1.85;
    }

    .cta-section { padding: 100px 0 112px; }
    .cta-box {
      position: relative;
      display: grid;
      grid-template-columns: 1fr .86fr;
      gap: 44px;
      padding: clamp(32px, 6vw, 70px);
      border: 1px solid rgba(98,217,255,.25);
      border-radius: var(--radius-lg);
      background:
        radial-gradient(circle at 90% 10%, rgba(98,217,255,.18), transparent 20rem),
        linear-gradient(135deg, rgba(31, 50, 106, .82), rgba(13, 20, 39, .92));
      overflow: hidden;
      box-shadow: var(--shadow);
    }
    .cta-box p { color: #c3cdec; max-width: 590px; line-height: 1.85; }
    .contact-form {
      padding: 24px;
      border: 1px solid var(--line);
      border-radius: 18px;
      background: rgba(7,11,23,.45);
    }
    .contact-form label { display: block; margin-bottom: 7px; color: #dce3fa; font-size: .85rem; font-weight: 600; }
    .contact-form input, .contact-form textarea {
      width: 100%;
      margin-bottom: 16px;
      padding: 12px 14px;
      color: var(--text);
      border: 1px solid var(--line-bright);
      border-radius: 10px;
      background: rgba(255,255,255,.045);
      box-shadow: none;
    }
    .contact-form input::placeholder, .contact-form textarea::placeholder { color: var(--muted-2); }
    .contact-form textarea { min-height: 90px; resize: vertical; }
    .form-note { margin: 12px 0 0; color: var(--muted-2); font-size: .76rem; line-height: 1.6; }

    .site-footer {
      padding: 58px 0 28px;
      border-top: 1px solid var(--line);
      background: #060a14;
    }
    .footer-top {
      display: flex;
      justify-content: space-between;
      gap: 40px;
      padding-bottom: 42px;
    }
    .footer-brand p { max-width: 350px; color: var(--muted); font-size: .88rem; }
    .footer-links { display: flex; gap: 64px; }
    .footer-column h4 { margin: 0 0 13px; color: white; font-size: .9rem; }
    .footer-column a { display: block; margin: 7px 0; color: var(--muted-2); font-size: .84rem; }
    .footer-column a:hover { color: var(--cyan); }
    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      padding-top: 24px;
      border-top: 1px solid var(--line);
      color: var(--muted-2);
      font-size: .78rem;
    }

    @media (max-width: 1024px) {
      .hero-grid, .node-panel, .cta-box { grid-template-columns: 1fr; }
      .hero-main { min-height: 480px; }
      .hero-side { grid-template-columns: 1fr 1fr; grid-template-rows: auto; }
      .feature-grid, .news-grid, .security-grid { grid-template-columns: repeat(2, 1fr); }
      .timeline { grid-template-columns: repeat(2, 1fr); gap: 30px 20px; }
      .timeline::before { display: none; }
    }

    @media (max-width: 768px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .section { padding: 78px 0; }
      .nav-wrap { min-height: 68px; }
      .nav-toggle { display: block; }
      .main-nav {
        display: none;
        position: absolute;
        top: 68px;
        left: 16px;
        right: 16px;
        padding: 12px;
        flex-direction: column;
        align-items: stretch;
        border: 1px solid var(--line);
        border-radius: 16px;
        background: rgba(12,18,35,.98);
        box-shadow: var(--shadow);
      }
      .main-nav.open { display: flex; }
      .main-nav a { padding: 13px 14px; }
      .hero { min-height: auto; padding: 60px 0; }
      .hero-side, .compare-wrap, .matrix { grid-template-columns: 1fr; }
      .stats-grid { grid-template-columns: repeat(2, 1fr); }
      .node-list { grid-template-columns: 1fr; }
      .footer-top, .footer-bottom { flex-direction: column; }
      .footer-links { gap: 32px; flex-wrap: wrap; }
    }

    @media (max-width: 520px) {
      h1 { font-size: 2.6rem; }
      h2 { font-size: 2rem; }
      .hero-main, .bento-card, .node-panel, .cta-box { padding: 25px; }
      .feature-grid, .news-grid, .security-grid, .stats-grid { grid-template-columns: 1fr; }
      .hero-actions { align-items: stretch; flex-direction: column; }
      .hero-actions .button { width: 100%; }
      .stat-item { padding: 24px 20px; }
      .timeline { grid-template-columns: 1fr; }
      .footer-links { display: grid; grid-template-columns: 1fr 1fr; width: 100%; }
    }

/* roulang page: category2 */
:root {
      --bg:#070b17;
      --bg-soft:#0c1223;
      --panel:#10182c;
      --panel-light:#151f38;
      --primary:#5b7cfa;
      --primary-dark:#3f5dde;
      --cyan:#62d9ff;
      --text:#f5f7ff;
      --muted:#9ba8c5;
      --muted-2:#71809e;
      --line:rgba(166,184,255,.14);
      --line-bright:rgba(166,184,255,.28);
      --radius-lg:28px;
      --radius-md:18px;
      --radius-sm:12px;
      --shadow:0 24px 70px rgba(0,0,0,.28);
      --container:1200px;
    }

    * { box-sizing:border-box; }
    html { scroll-behavior:smooth; }
    body {
      margin:0;
      color:var(--text);
      background:
        radial-gradient(circle at 84% 4%,rgba(73,103,255,.18),transparent 25rem),
        radial-gradient(circle at 4% 30%,rgba(34,177,232,.08),transparent 22rem),
        var(--bg);
      font-family:"Noto Sans SC","Inter",sans-serif;
      font-size:16px;
      line-height:1.75;
      overflow-x:hidden;
    }
    body::selection { color:#fff; background:var(--primary); }
    a { color:inherit; text-decoration:none; transition:.25s ease; }
    img { display:block; max-width:100%; }
    button,input,textarea { font:inherit; }
    button:focus,a:focus,input:focus,textarea:focus {
      outline:3px solid rgba(98,217,255,.35);
      outline-offset:3px;
    }
    h1,h2,h3,h4,p { margin-top:0; }
    h1,h2,h3,h4 { letter-spacing:-.04em; }
    .container { width:min(var(--container),calc(100% - 48px)); margin:0 auto; }
    .section { position:relative; padding:104px 0; }
    .section-soft {
      background:linear-gradient(180deg,rgba(15,23,45,.58),rgba(9,14,28,.34));
      border-top:1px solid rgba(166,184,255,.06);
      border-bottom:1px solid rgba(166,184,255,.06);
    }
    .section-head { max-width:740px; margin-bottom:44px; }
    .section-head.split {
      max-width:none;
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:35px;
    }
    .eyebrow {
      display:inline-flex;
      align-items:center;
      gap:9px;
      color:var(--cyan);
      font-size:12px;
      font-weight:800;
      letter-spacing:.16em;
      margin-bottom:15px;
    }
    .eyebrow::before {
      content:"";
      width:24px;
      height:1px;
      background:var(--cyan);
      box-shadow:0 0 14px var(--cyan);
    }
    h1 { font-size:clamp(2.65rem,6vw,5.4rem); line-height:1.08; margin-bottom:24px; }
    h2 { font-size:clamp(2rem,4vw,3.2rem); line-height:1.16; margin-bottom:17px; }
    h3 { font-size:1.35rem; line-height:1.35; margin-bottom:12px; }
    .lead { max-width:720px; color:var(--muted); font-size:1.08rem; line-height:1.9; }
    .muted { color:var(--muted); }

    .site-header {
      position:sticky;
      top:0;
      z-index:30;
      border-bottom:1px solid rgba(166,184,255,.1);
      background:rgba(7,11,23,.82);
      backdrop-filter:blur(22px);
    }
    .nav-wrap {
      min-height:78px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:28px;
    }
    .brand {
      display:inline-flex;
      align-items:center;
      gap:11px;
      min-width:max-content;
      font-size:1.12rem;
      font-weight:800;
      letter-spacing:-.03em;
    }
    .brand-mark {
      width:34px;
      height:34px;
      display:grid;
      place-items:center;
      border-radius:11px;
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--cyan));
      box-shadow:0 9px 28px rgba(91,124,250,.36);
    }
    .main-nav { display:flex; align-items:center; gap:6px; }
    .main-nav a {
      padding:10px 14px;
      color:var(--muted);
      border-radius:10px;
      font-size:.93rem;
      font-weight:600;
    }
    .main-nav a:hover,.main-nav a.active {
      color:var(--text);
      background:rgba(116,139,255,.12);
    }
    .main-nav .nav-download {
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#fff;
      background:var(--primary);
      box-shadow:0 10px 24px rgba(91,124,250,.25);
    }
    .main-nav .nav-download:hover {
      color:#fff;
      background:var(--primary-dark);
      transform:translateY(-2px);
    }
    .nav-toggle {
      display:none;
      border:1px solid var(--line);
      color:var(--text);
      background:transparent;
      border-radius:10px;
      padding:8px 11px;
      cursor:pointer;
    }

    .page-intro {
      position:relative;
      padding:92px 0 70px;
      overflow:hidden;
    }
    .page-intro::before {
      content:"";
      position:absolute;
      width:620px;
      height:620px;
      right:-200px;
      top:-250px;
      border-radius:50%;
      background:rgba(79,104,255,.16);
      filter:blur(12px);
      pointer-events:none;
    }
    .intro-grid {
      position:relative;
      display:grid;
      grid-template-columns:1fr .8fr;
      gap:58px;
      align-items:end;
    }
    .intro-copy { max-width:760px; }
    .intro-copy h1 { max-width:770px; }
    .intro-meta {
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:30px;
    }
    .pill {
      display:inline-flex;
      align-items:center;
      gap:8px;
      min-height:36px;
      padding:0 13px;
      color:#cdd8f5;
      border:1px solid var(--line);
      border-radius:999px;
      background:rgba(255,255,255,.035);
      font-size:.88rem;
    }
    .pill i { color:var(--cyan); font-size:.75rem; }
    .intro-panel {
      padding:24px;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      background:linear-gradient(145deg,rgba(25,39,77,.84),rgba(13,21,42,.8));
      box-shadow:var(--shadow);
    }
    .signal-label {
      display:flex;
      justify-content:space-between;
      color:var(--muted);
      font-size:.82rem;
      margin-bottom:15px;
    }
    .signal-label strong { color:#cfe7ff; font-weight:700; }
    .signal-map {
      position:relative;
      height:190px;
      overflow:hidden;
      border:1px solid rgba(132,170,255,.2);
      border-radius:18px;
      background:
        linear-gradient(rgba(97,126,221,.11) 1px,transparent 1px),
        linear-gradient(90deg,rgba(97,126,221,.11) 1px,transparent 1px),
        radial-gradient(circle at 50% 44%,rgba(98,217,255,.24),transparent 11%),
        #0b142b;
      background-size:28px 28px,28px 28px,auto,auto;
    }
    .signal-map::before,.signal-map::after {
      content:"";
      position:absolute;
      border:1px solid rgba(98,217,255,.34);
      border-radius:50%;
      transform:translate(-50%,-50%);
      left:50%;
      top:47%;
    }
    .signal-map::before { width:120px; height:120px; }
    .signal-map::after { width:210px; height:210px; opacity:.45; }
    .map-node {
      position:absolute;
      z-index:2;
      width:11px;
      height:11px;
      border-radius:50%;
      background:var(--cyan);
      box-shadow:0 0 0 6px rgba(98,217,255,.11),0 0 18px var(--cyan);
    }
    .map-node.one { left:20%; top:34%; }
    .map-node.two { right:19%; top:28%; }
    .map-node.three { left:27%; bottom:22%; }
    .map-node.four { right:28%; bottom:19%; background:var(--primary); box-shadow:0 0 0 6px rgba(91,124,250,.13),0 0 18px var(--primary); }
    .map-core {
      position:absolute;
      z-index:3;
      left:50%;
      top:47%;
      width:15px;
      height:15px;
      border-radius:50%;
      transform:translate(-50%,-50%);
      background:#fff;
      box-shadow:0 0 0 8px rgba(255,255,255,.08),0 0 25px var(--cyan);
    }
    .intro-panel-foot {
      display:flex;
      justify-content:space-between;
      gap:15px;
      margin-top:17px;
      color:var(--muted);
      font-size:.83rem;
    }
    .intro-panel-foot strong { color:#dce6ff; }

    .button {
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      min-height:48px;
      padding:0 20px;
      border:1px solid transparent;
      border-radius:12px;
      font-weight:700;
      cursor:pointer;
      transition:.25s ease;
    }
    .button-primary {
      color:#fff;
      background:var(--primary);
      box-shadow:0 12px 30px rgba(91,124,250,.28);
    }
    .button-primary:hover { color:#fff; background:var(--primary-dark); transform:translateY(-2px); }
    .button-ghost {
      color:var(--text);
      border-color:var(--line-bright);
      background:rgba(255,255,255,.04);
    }
    .button-ghost:hover { color:#fff; border-color:var(--cyan); background:rgba(98,217,255,.08); }

    .metrics {
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:14px;
    }
    .metric {
      min-height:150px;
      padding:24px;
      border:1px solid var(--line);
      border-radius:var(--radius-md);
      background:rgba(16,24,44,.72);
      transition:.25s ease;
    }
    .metric:hover { transform:translateY(-4px); border-color:var(--line-bright); background:var(--panel-light); }
    .metric i { color:var(--cyan); font-size:1.1rem; margin-bottom:23px; }
    .metric strong { display:block; font-size:2rem; line-height:1; letter-spacing:-.06em; margin-bottom:9px; }
    .metric span { color:var(--muted); font-size:.88rem; }

    .matrix {
      display:grid;
      grid-template-columns:1.08fr .92fr;
      gap:24px;
      align-items:stretch;
    }
    .matrix-feature {
      min-height:410px;
      padding:34px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      background:
        linear-gradient(135deg,rgba(18,35,76,.76),rgba(11,19,39,.92)),
        url("https://images.unsplash.com/photo-1558494949-ef010cbdcc31?auto=format&fit=crop&w=1200&q=85") center/cover;
      overflow:hidden;
      box-shadow:var(--shadow);
    }
    .matrix-feature h3 { max-width:460px; font-size:2rem; }
    .matrix-feature p { max-width:470px; color:#bdc9e8; }
    .matrix-feature .button { align-self:flex-start; }
    .matrix-list {
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:14px;
    }
    .matrix-card {
      padding:25px 22px;
      border:1px solid var(--line);
      border-radius:var(--radius-md);
      background:rgba(16,24,44,.74);
      transition:.25s ease;
    }
    .matrix-card:hover { border-color:rgba(98,217,255,.45); transform:translateY(-4px); }
    .matrix-icon {
      width:42px;
      height:42px;
      display:grid;
      place-items:center;
      margin-bottom:20px;
      color:var(--cyan);
      border-radius:13px;
      background:rgba(98,217,255,.1);
    }
    .matrix-card h3 { font-size:1.08rem; margin-bottom:9px; }
    .matrix-card p { color:var(--muted); font-size:.9rem; line-height:1.7; margin:0; }

    .route-section { overflow:hidden; }
    .route-layout {
      display:grid;
      grid-template-columns:.72fr 1.28fr;
      gap:58px;
      align-items:start;
    }
    .route-copy { position:sticky; top:118px; }
    .route-copy .lead { font-size:1rem; }
    .route-list { border-top:1px solid var(--line); }
    .route-item {
      display:grid;
      grid-template-columns:70px 1fr auto;
      gap:22px;
      align-items:center;
      padding:24px 0;
      border-bottom:1px solid var(--line);
    }
    .route-index {
      color:var(--cyan);
      font-family:"Inter",sans-serif;
      font-size:1.1rem;
      font-weight:800;
    }
    .route-item h3 { margin-bottom:5px; font-size:1.13rem; }
    .route-item p { margin:0; color:var(--muted); font-size:.9rem; }
    .route-status {
      color:#8ff0c4;
      font-size:.83rem;
      white-space:nowrap;
    }
    .route-status i { margin-right:5px; font-size:.6rem; }

    .compare-grid {
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:24px;
    }
    .compare-card {
      padding:32px;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      background:var(--panel);
    }
    .compare-card.highlight {
      border-color:rgba(91,124,250,.55);
      background:linear-gradient(145deg,rgba(29,45,95,.83),rgba(14,23,46,.9));
      box-shadow:0 20px 55px rgba(31,59,165,.17);
    }
    .compare-top {
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:18px;
      padding-bottom:22px;
      border-bottom:1px solid var(--line);
      margin-bottom:22px;
    }
    .compare-top h3 { margin:0; }
    .compare-badge {
      padding:5px 10px;
      color:#c8f6ff;
      border:1px solid rgba(98,217,255,.25);
      border-radius:999px;
      background:rgba(98,217,255,.1);
      font-size:.75rem;
    }
    .compare-row {
      display:flex;
      justify-content:space-between;
      gap:20px;
      padding:13px 0;
      color:var(--muted);
      border-bottom:1px dashed rgba(166,184,255,.12);
      font-size:.92rem;
    }
    .compare-row:last-child { border-bottom:0; }
    .compare-row strong { color:var(--text); font-family:"Inter",sans-serif; }

    .timeline {
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:0;
      position:relative;
    }
    .timeline::before {
      content:"";
      position:absolute;
      left:8%;
      right:8%;
      top:24px;
      height:1px;
      background:linear-gradient(90deg,var(--primary),var(--cyan));
      opacity:.45;
    }
    .milestone { position:relative; padding-right:24px; }
    .milestone-dot {
      position:relative;
      z-index:1;
      width:49px;
      height:49px;
      display:grid;
      place-items:center;
      margin-bottom:22px;
      color:#fff;
      border:7px solid var(--bg);
      border-radius:50%;
      background:linear-gradient(135deg,var(--primary),var(--cyan));
      box-shadow:0 0 0 1px rgba(98,217,255,.35),0 0 25px rgba(98,217,255,.18);
      font-size:.82rem;
      font-weight:800;
    }
    .milestone h3 { font-size:1.06rem; margin-bottom:8px; }
    .milestone p { margin:0; color:var(--muted); font-size:.88rem; line-height:1.75; }

    .news-layout {
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      gap:24px;
    }
    .news-feature {
      min-height:345px;
      padding:30px;
      display:flex;
      flex-direction:column;
      justify-content:end;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      background:
        linear-gradient(180deg,rgba(8,13,27,.05),rgba(8,13,27,.94)),
        url("https://images.unsplash.com/photo-1518770660439-4636190af475?auto=format&fit=crop&w=1200&q=85") center/cover;
    }
    .news-feature .eyebrow { margin-bottom:12px; }
    .news-feature h3 { font-size:1.65rem; max-width:480px; }
    .news-feature p { color:#c0cbea; margin-bottom:0; max-width:520px; }
    .news-list { border-top:1px solid var(--line); }
    .news-item {
      display:grid;
      grid-template-columns:110px 1fr;
      gap:20px;
      padding:20px 0;
      border-bottom:1px solid var(--line);
    }
    .news-date { color:var(--cyan); font-family:"Inter",sans-serif; font-size:.82rem; padding-top:4px; }
    .news-item h3 { font-size:1.08rem; margin-bottom:6px; }
    .news-item p { color:var(--muted); margin:0; font-size:.9rem; line-height:1.7; }

    .security-grid {
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:16px;
    }
    .security-card {
      padding:26px;
      border-left:2px solid var(--primary);
      background:rgba(16,24,44,.68);
      border-radius:0 var(--radius-md) var(--radius-md) 0;
    }
    .security-card i { color:var(--cyan); font-size:1.35rem; margin-bottom:18px; }
    .security-card h3 { font-size:1.08rem; margin-bottom:8px; }
    .security-card p { color:var(--muted); font-size:.9rem; line-height:1.75; margin:0; }

    .faq-wrap {
      display:grid;
      grid-template-columns:.72fr 1.28fr;
      gap:65px;
      align-items:start;
    }
    .faq-list { border-top:1px solid var(--line); }
    .faq-item { border-bottom:1px solid var(--line); }
    .faq-item summary {
      position:relative;
      list-style:none;
      cursor:pointer;
      padding:21px 42px 21px 0;
      font-weight:700;
    }
    .faq-item summary::-webkit-details-marker { display:none; }
    .faq-item summary::after {
      content:"+";
      position:absolute;
      right:4px;
      top:15px;
      color:var(--cyan);
      font-size:1.45rem;
      font-weight:400;
      transition:.25s ease;
    }
    .faq-item[open] summary::after { content:"−"; transform:rotate(180deg); }
    .faq-answer { padding:0 35px 22px 0; color:var(--muted); font-size:.93rem; line-height:1.85; }

    .cta-section { padding:90px 0; }
    .cta-box {
      position:relative;
      overflow:hidden;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:35px;
      padding:46px 52px;
      border:1px solid rgba(124,151,255,.35);
      border-radius:var(--radius-lg);
      background:
        radial-gradient(circle at 90% 20%,rgba(98,217,255,.18),transparent 20rem),
        linear-gradient(135deg,rgba(30,48,103,.9),rgba(15,24,50,.93));
      box-shadow:var(--shadow);
    }
    .cta-box h2 { max-width:650px; margin-bottom:10px; }
    .cta-box p { max-width:650px; color:#c0cbed; margin:0; }
    .cta-box .button { flex:none; }

    .site-footer {
      padding:70px 0 25px;
      border-top:1px solid rgba(166,184,255,.1);
      background:#060a14;
    }
    .footer-top {
      display:flex;
      justify-content:space-between;
      gap:70px;
      padding-bottom:48px;
    }
    .footer-brand { max-width:390px; }
    .footer-brand .brand { margin-bottom:18px; }
    .footer-brand p { color:var(--muted); font-size:.92rem; line-height:1.8; }
    .footer-links { display:flex; gap:85px; }
    .footer-column { display:flex; flex-direction:column; gap:11px; min-width:120px; }
    .footer-column h4 { color:var(--text); font-size:.95rem; margin-bottom:6px; }
    .footer-column a { color:var(--muted); font-size:.9rem; }
    .footer-column a:hover { color:var(--cyan); transform:translateX(3px); }
    .footer-bottom {
      display:flex;
      justify-content:space-between;
      gap:22px;
      padding-top:22px;
      border-top:1px solid var(--line);
      color:var(--muted-2);
      font-size:.78rem;
    }

    @media (max-width:1024px) {
      .intro-grid,.matrix,.route-layout,.news-layout,.faq-wrap { grid-template-columns:1fr; }
      .route-copy { position:static; }
      .intro-panel { max-width:620px; }
      .metrics { grid-template-columns:repeat(2,1fr); }
      .section { padding:88px 0; }
    }
    @media (max-width:768px) {
      .container { width:min(var(--container),calc(100% - 34px)); }
      .nav-wrap { min-height:70px; }
      .nav-toggle { display:block; }
      .main-nav {
        position:absolute;
        left:17px;
        right:17px;
        top:77px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        gap:4px;
        padding:12px;
        border:1px solid var(--line);
        border-radius:16px;
        background:rgba(10,16,32,.97);
        box-shadow:var(--shadow);
      }
      .main-nav.open { display:flex; }
      .main-nav a { padding:12px 14px; }
      .main-nav .nav-download { justify-content:center; margin-top:5px; }
      .page-intro { padding:70px 0 55px; }
      .intro-grid { gap:35px; }
      h1 { font-size:clamp(2.35rem,12vw,4rem); }
      .section-head.split { display:block; }
      .section-head.split .lead { margin-top:15px; }
      .matrix-list,.compare-grid,.security-grid { grid-template-columns:1fr; }
      .matrix-feature { min-height:360px; }
      .timeline { grid-template-columns:1fr 1fr; gap:28px 20px; }
      .timeline::before { display:none; }
      .milestone { padding-right:0; }
      .milestone-dot { margin-bottom:14px; }
      .cta-box { display:block; padding:34px 27px; }
      .cta-box .button { margin-top:25px; }
      .footer-top { display:block; }
      .footer-links { margin-top:35px; gap:45px; }
      .footer-bottom { display:block; }
      .footer-bottom span { display:block; margin-top:8px; }
    }
    @media (max-width:520px) {
      .section { padding:70px 0; }
      .metrics { grid-template-columns:1fr 1fr; gap:10px; }
      .metric { min-height:130px; padding:18px; }
      .metric strong { font-size:1.65rem; }
      .matrix-feature { padding:25px; }
      .matrix-feature h3 { font-size:1.6rem; }
      .route-item { grid-template-columns:45px 1fr; gap:12px; }
      .route-status { grid-column:2; }
      .news-item { grid-template-columns:1fr; gap:4px; }
      .timeline { grid-template-columns:1fr; }
      .intro-meta { gap:7px; }
      .intro-panel { padding:17px; }
      .footer-links { gap:28px; }
    }

/* roulang page: category1 */
:root {
 --bg: #070b17;
 --bg-soft: #0c1223;
 --panel: #10182c;
 --panel-light: #151f38;
 --primary: #5b7cfa;
 --primary-dark: #3f5dde;
 --cyan: #62d9ff;
 --text: #f5f7ff;
 --muted: #9ba8c5;
 --muted-2: #71809e;
 --line: rgba(166, 184, 255, .14);
 --line-bright: rgba(166, 184, 255, .28);
 --radius-lg: 28px;
 --radius-md: 18px;
 --radius-sm: 12px;
 --shadow: 0 24px 70px rgba(0, 0, 0, .28);
 --container: 1200px;
 }
/* roulang page: index */
:root {
 --bg: #070b17;
 --bg-soft: #0c1223;
 --panel: #10182c;
 --panel-light: #151f38;
 --primary: #5b7cfa;
 --primary-dark: #3f5dde;
 --cyan: #62d9ff;
 --text: #f5f7ff;
 --muted: #9ba8c5;
 --muted-2: #71809e;
 --line: rgba(166, 184, 255, .14);
 --line-bright: rgba(166, 184, 255, .28);
 --radius-lg: 28px;
 --radius-md: 18px;
 --radius-sm: 12px;
 --shadow: 0 24px 70px rgba(0, 0, 0, .28);
 --container: 1200px;
 }
html { scroll-behavior: smooth; }
body {
 margin: 0;
 color: var(--text);
 background:
 radial-gradient(circle at 84% 4%, rgba(73, 103, 255, .18), transparent 25rem),
 radial-gradient(circle at 4% 30%, rgba(34, 177, 232, .08), transparent 22rem),
 var(--bg);
 font-family: "Noto Sans SC", "Inter", sans-serif;
 font-size: 16px;
 line-height: 1.75;
 overflow-x: hidden;
 }
a { color: inherit; text-decoration: none; transition: .25s ease; }
img { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }
button:focus, a:focus, input:focus, textarea:focus {
 outline: 3px solid rgba(98, 217, 255, .35);
 outline-offset: 3px;
 }
.container {
 width: min(var(--container), calc(100% - 48px));
 margin: 0 auto;
 }
.section {
 position: relative;
 padding: 112px 0;
 }
.section-soft {
 background: linear-gradient(180deg, rgba(15, 23, 45, .56), rgba(9, 14, 28, .35));
 border-top: 1px solid rgba(166, 184, 255, .06);
 border-bottom: 1px solid rgba(166, 184, 255, .06);
 }
.section-head {
 max-width: 720px;
 margin-bottom: 48px;
 }
.eyebrow {
 display: inline-flex;
 align-items: center;
 gap: 9px;
 color: var(--cyan);
 font-size: 12px;
 font-weight: 800;
 letter-spacing: .16em;
 text-transform: uppercase;
 margin-bottom: 15px;
 }
.eyebrow::before {
 content: "";
 width: 24px;
 height: 1px;
 background: var(--cyan);
 box-shadow: 0 0 14px var(--cyan);
 }
.lead {
 max-width: 720px;
 color: var(--muted);
 font-size: 1.08rem;
 line-height: 1.9;
 }
.muted { color: var(--muted); }
.site-header {
 position: sticky;
 top: 0;
 z-index: 30;
 border-bottom: 1px solid rgba(166, 184, 255, .1);
 background: rgba(7, 11, 23, .82);
 backdrop-filter: blur(22px);
 }
.nav-wrap {
 min-height: 78px;
 display: flex;
 align-items: center;
 justify-content: space-between;
 gap: 28px;
 }
.brand {
 display: inline-flex;
 align-items: center;
 gap: 11px;
 min-width: max-content;
 font-size: 1.12rem;
 font-weight: 800;
 letter-spacing: -.03em;
 }
.brand-mark {
 width: 34px;
 height: 34px;
 display: grid;
 place-items: center;
 border-radius: 11px;
 color: white;
 background: linear-gradient(135deg, var(--primary), var(--cyan));
 box-shadow: 0 9px 28px rgba(91, 124, 250, .36);
 }
.main-nav {
 display: flex;
 align-items: center;
 gap: 6px;
 }
.main-nav a {
 padding: 10px 14px;
 color: var(--muted);
 border-radius: 10px;
 font-size: .93rem;
 font-weight: 600;
 }
.main-nav a:hover, .main-nav a.active {
 color: var(--text);
 background: rgba(116, 139, 255, .12);
 }
.nav-download {
 display: inline-flex !important;
 align-items: center;
 gap: 8px;
 color: #fff !important;
 background: var(--primary) !important;
 box-shadow: 0 10px 24px rgba(91, 124, 250, .25);
 }
.nav-download:hover { background: var(--primary-dark) !important; transform: translateY(-2px); }
.nav-toggle {
 display: none;
 border: 1px solid var(--line);
 color: var(--text);
 background: transparent;
 border-radius: 10px;
 padding: 8px 11px;
 cursor: pointer;
 }
.hero {
 min-height: 720px;
 display: flex;
 align-items: center;
 padding: 90px 0 84px;
 overflow: hidden;
 }
.hero::before {
 content: "";
 position: absolute;
 width: 560px;
 height: 560px;
 right: -170px;
 top: 80px;
 border-radius: 50%;
 background: rgba(84, 114, 255, .15);
 filter: blur(90px);
 pointer-events: none;
 }
.hero-grid {
 position: relative;
 display: grid;
 grid-template-columns: 1.08fr .92fr;
 gap: 26px;
 align-items: stretch;
 }
.hero-main {
 min-height: 520px;
 display: flex;
 flex-direction: column;
 justify-content: space-between;
 padding: clamp(30px, 5vw, 62px);
 border: 1px solid var(--line);
 border-radius: var(--radius-lg);
 background:
 linear-gradient(140deg, rgba(31, 48, 95, .82), rgba(15, 23, 45, .88)),
 url("https://images.unsplash.com/photo-1451187580459-43490279c0fa?auto=format&fit=crop&w=1600&q=85") center/cover;
 box-shadow: var(--shadow);
 overflow: hidden;
 }
.hero-main::after {
 content: "";
 position: absolute;
 inset: 0;
 background: linear-gradient(135deg, rgba(7, 11, 23, .1), rgba(7, 11, 23, .64));
 pointer-events: none;
 }
.hero-main > * { position: relative; z-index: 1; }
.hero-main .eyebrow { color: #b9eaff; }
.hero-main .hero-description {
 max-width: 670px;
 color: #d4ddf7;
 font-size: 1.06rem;
 line-height: 1.9;
 }
.hero-actions {
 display: flex;
 flex-wrap: wrap;
 gap: 12px;
 margin-top: 30px;
 }
.button {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 gap: 9px;
 min-height: 48px;
 padding: 0 20px;
 border: 1px solid transparent;
 border-radius: 12px;
 font-weight: 700;
 cursor: pointer;
 transition: .25s ease;
 }
.button-primary {
 color: white;
 background: var(--primary);
 box-shadow: 0 12px 30px rgba(91, 124, 250, .28);
 }
.button-primary:hover { color: white; background: var(--primary-dark); transform: translateY(-2px); }
.button-ghost {
 color: var(--text);
 border-color: var(--line-bright);
 background: rgba(255,255,255,.04);
 }
.button-ghost:hover { color: white; border-color: var(--cyan); background: rgba(98, 217, 255, .08); }
.hero-note {
 display: flex;
 align-items: center;
 gap: 10px;
 color: #b4c0df;
 font-size: .9rem;
 }
/* design system truncated */
*, *::before, *::after { box-sizing: border-box; }
h1, h2, h3, h4, h5, h6 {
 margin: 0;
 color: var(--text);
 font-family: inherit;
 line-height: 1.25;
 letter-spacing: -.03em;
}
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
.section { padding: 96px 0; }
.site-header { overflow: visible; }
.nav-wrap { position: relative; }
body a.button,
body button.button {
 margin: 0;
 width: auto;
 text-transform: none;
 letter-spacing: 0;
 line-height: 1;
 font-size: .95rem;
}
.button-primary { background: var(--primary); color: #fff; }
.stage-intro { max-width: 860px; margin: 0 auto 36px; text-align: center; }
.stage-intro .lead { margin: 0 auto; }
.stage-title {
 font-size: clamp(2.3rem, 5vw, 4.35rem);
 font-weight: 800;
 line-height: 1.12;
 margin-bottom: 16px;
}
.stage-layout {
 display: grid;
 grid-template-columns: 230px minmax(0, 1fr) 230px;
 gap: 18px;
 align-items: center;
}
.stage-points { display: grid; gap: 14px; }
.point {
 padding: 16px 16px 15px;
 border: 1px solid var(--line);
 border-radius: var(--radius-md);
 background: rgba(16, 24, 44, .78);
 transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.point:hover {
 transform: translateY(-3px);
 border-color: var(--line-bright);
 box-shadow: 0 16px 40px rgba(0, 0, 0, .22);
}
.point i {
 width: 36px;
 height: 36px;
 display: grid;
 place-items: center;
 margin-bottom: 10px;
 border-radius: 11px;
 color: var(--cyan);
 background: rgba(98, 217, 255, .08);
}
.point strong { display: block; margin-bottom: 4px; font-size: 1rem; }
.point span { color: var(--muted); font-size: .92rem; }
.stage-visual {
 position: relative;
 min-height: 470px;
 border-radius: var(--radius-lg);
 overflow: hidden;
 border: 1px solid var(--line-bright);
 box-shadow: var(--shadow);
}
.stage-visual img {
 width: 100%;
 height: 470px;
 object-fit: cover;
}
.stage-visual::after {
 content: "";
 position: absolute;
 inset: 0;
 background: linear-gradient(180deg, rgba(7, 11, 23, .08), rgba(7, 11, 23, .78));
}
.stage-panel {
 position: absolute;
 z-index: 1;
 left: 16px;
 right: 16px;
 bottom: 16px;
 display: grid;
 grid-template-columns: 1.3fr .7fr .8fr;
 gap: 10px;
 padding: 14px;
 border-radius: 18px;
 background: rgba(8, 12, 26, .78);
 border: 1px solid rgba(166, 184, 255, .2);
 backdrop-filter: blur(16px);
}
.stage-panel b { display: block; font-size: 1.02rem; }
.stage-panel span { color: #c6d0ea; font-size: .84rem; }
.live-dot {
 width: 8px;
 height: 8px;
 display: inline-block;
 margin-right: 6px;
 border-radius: 50%;
 background: #67f0b4;
 box-shadow: 0 0 12px #67f0b4;
}
.stage-actions {
 display: flex;
 justify-content: center;
 flex-wrap: wrap;
 gap: 12px;
 margin-top: 26px;
}
.metric-board {
 display: grid;
 grid-template-columns: repeat(4, 1fr);
 border: 1px solid var(--line);
 border-radius: var(--radius-lg);
 background: linear-gradient(180deg, rgba(21, 31, 56, .9), rgba(12, 18, 35, .92));
 overflow: hidden;
}
.metric-item {
 padding: 28px 24px;
 border-right: 1px solid var(--line);
}
.metric-item:last-child { border-right: 0; }
.metric-value {
 font-family: Inter, "Noto Sans SC", sans-serif;
 font-size: clamp(1.8rem, 3vw, 2.6rem);
 font-weight: 800;
 letter-spacing: -.04em;
 color: white;
}
.metric-value em {
 font-style: normal;
 color: var(--cyan);
 font-size: .46em;
 margin-left: 6px;
}
.metric-label { color: var(--muted); margin-top: 6px; }
.ticker {
 margin-top: 18px;
 overflow: hidden;
 border-radius: 999px;
 border: 1px solid var(--line);
 background: rgba(16, 24, 44, .72);
}
.ticker-track {
 display: flex;
 width: max-content;
 gap: 28px;
 padding: 12px 0;
 animation: ticker 32s linear infinite;
}
.ticker span { color: #d5def5; font-weight: 600; white-space: nowrap; }
.ticker i { color: var(--cyan); margin-right: 8px; }
@keyframes ticker {
 from { transform: translateX(0); }
 to { transform: translateX(-50%); }
}
.bento {
 display: grid;
 grid-template-columns: 1.35fr .75fr;
 gap: 18px;
}
.bento-card, .assure-card, .news-item, .quick-item, .contact-card, .compare-board {
 border: 1px solid var(--line);
 background: rgba(16, 24, 44, .82);
 border-radius: var(--radius-lg);
 box-shadow: 0 18px 50px rgba(0, 0, 0, .16);
}
.bento-main {
 min-height: 100%;
 padding: 36px;
 background:
 radial-gradient(circle at 90% 10%, rgba(91, 124, 250, .22), transparent 16rem),
 rgba(16, 24, 44, .9);
}
.bento-main h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); max-width: 520px; margin: 8px 0 16px; }
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 26px; }
.chip {
 padding: 7px 12px;
 border-radius: 999px;
 color: #d7e4ff;
 background: rgba(98, 217, 255, .08);
 border: 1px solid rgba(98, 217, 255, .16);
 font-size: .86rem;
 font-weight: 700;
}
.bento-side { display: grid; gap: 18px; }
.bento-side .bento-card { padding: 24px; transition: transform .25s ease, border-color .25s ease; }
.bento-side .bento-card:hover { transform: translateY(-4px); border-color: var(--line-bright); }
.bento-side h3 { margin: 10px 0; font-size: 1.22rem; }
.compare-board { padding: 10px 22px 8px; }
.compare-head, .compare-row {
 display: grid;
 grid-template-columns: 1.05fr 1fr 1fr;
 gap: 12px;
 align-items: stretch;
}
.compare-head {
 padding: 18px 0 8px;
 color: var(--muted-2);
 font-size: .86rem;
 font-weight: 800;
}
.compare-row {
 padding: 14px 0;
 border-top: 1px solid var(--line);
}
.compare-row strong, .compare-plain, .compare-better { display: block; }
.compare-plain, .compare-better { padding: 14px 16px; border-radius: 14px; }
.compare-plain { background: rgba(255,255,255,.03); color: #c9d3ea; }
.compare-better {
 color: #e8fbff;
 background: rgba(98, 217, 255, .08);
 border: 1px solid rgba(98, 217, 255, .16);
}
.scene-name { display: flex; align-items: center; font-weight: 800; }
.timeline {
 display: grid;
 grid-template-columns: repeat(4, 1fr);
 gap: 16px;
}
.time-item {
 position: relative;
 padding: 22px 20px 20px;
 border-radius: var(--radius-md);
 border: 1px solid var(--line);
 background: rgba(12, 18, 35, .72);
}
.time-item::before {
 content: "";
 position: absolute;
 left: 22px;
 right: -16px;
 top: 34px;
 height: 1px;
 background: linear-gradient(90deg, var(--cyan), transparent);
}
.time-item:last-child::before { display: none; }
.time-no {
 font-family: Inter, sans-serif;
 color: var(--cyan);
 font-weight: 800;
 letter-spacing: .08em;
}
.time-item h3 { margin: 18px 0 8px; font-size: 1.16rem; }
.news-list { display: grid; gap: 12px; }
.news-item {
 display: grid;
 grid-template-columns: 126px 1fr;
 gap: 18px;
 padding: 22px 24px;
 transition: border-color .25s ease, transform .25s ease;
}
.news-item:hover { transform: translateX(4px); border-color: var(--line-bright); }
.news-date { color: var(--cyan); font-weight: 800; font-family: Inter, sans-serif; }
.news-item h3 { font-size: 1.18rem; margin-bottom: 6px; }
.assure-wrap {
 display: grid;
 grid-template-columns: .78fr 1.22fr;
 gap: 34px;
 align-items: start;
}
.assure-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.assure-card { padding: 22px; min-height: 180px; }
.assure-card i {
 color: var(--cyan);
 font-size: 1.15rem;
 margin-bottom: 14px;
}
.assure-card h3 { margin-bottom: 8px; font-size: 1.12rem; }
.quick-list { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.quick-item { padding: 22px 22px 18px; }
.quick-item b { display: block; margin-bottom: 6px; font-size: 1.05rem; }
.faq-list { display: grid; gap: 12px; max-width: 920px; }
.faq-item {
 border: 1px solid var(--line);
 border-radius: 16px;
 background: rgba(16, 24, 44, .8);
 overflow: hidden;
}
.faq-item summary {
 cursor: pointer;
 list-style: none;
 padding: 18px 20px;
 font-weight: 800;
 display: flex;
 justify-content: space-between;
 gap: 16px;
 align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--cyan); font-size: 1.3rem; }
.faq-item[open] summary::after { content: "–"; }
.faq-item p { padding: 0 20px 18px; color: var(--muted); }
.contact-card { padding: 22px; }
.field { margin-bottom: 14px; }
.field label { display: block; margin-bottom: 7px; font-weight: 700; }
input, select, textarea {
 width: 100%;
 color: var(--text);
 background: #0b1224;
 border: 1px solid var(--line);
 border-radius: 12px;
 min-height: 48px;
 padding: 12px 14px;
 box-shadow: none;
}
textarea { min-height: 120px; resize: vertical; }
input:focus, select:focus, textarea:focus { border-color: var(--cyan); background: #0d152b; }
.form-ok {
 margin-top: 14px;
 padding: 12px 14px;
 border-radius: 12px;
 color: #d9fff0;
 background: rgba(72, 196, 145, .12);
 border: 1px solid rgba(72, 196, 145, .28);
}
.site-footer {
 padding: 64px 0 28px;
 border-top: 1px solid rgba(166, 184, 255, .1);
 background: #080d1b;
}
.footer-top {
 display: grid;
 grid-template-columns: 1.3fr .9fr;
 gap: 40px;
 padding-bottom: 28px;
}
.footer-brand p { max-width: 420px; margin-top: 14px; color: var(--muted); }
.footer-links { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.footer-column { display: grid; align-content: start; gap: 8px; }
.footer-column h4 { margin-bottom: 6px; font-size: .95rem; }
.footer-column a { color: var(--muted); }
.footer-column a:hover { color: white; }
.footer-bottom {
 display: flex;
 justify-content: space-between;
 gap: 12px;
 flex-wrap: wrap;
 padding-top: 18px;
 border-top: 1px solid var(--line);
 color: var(--muted-2);
 font-size: .9rem;
}
@media (max-width: 1024px) {
 .nav-toggle { display: inline-flex; }
 .main-nav {
  display: none;
  position: absolute;
  top: 74px;
  left: 0;
  right: 0;
  flex-direction: column;
  align-items: stretch;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(10, 15, 30, .98);
  box-shadow: var(--shadow);
 }
 .main-nav.is-open { display: flex; }
 .stage-layout, .bento, .assure-wrap, .timeline { grid-template-columns: 1fr 1fr; }
 .stage-visual { grid-column: 1 / -1; order: -1; }
 .metric-board { grid-template-columns: 1fr 1fr; }
 .metric-item:nth-child(2) { border-right: 0; }
 .metric-item { border-bottom: 1px solid var(--line); }
 .time-item::before { display: none; }
}
@media (max-width: 768px) {
 .section { padding: 72px 0; }
 .stage-layout, .bento, .assure-wrap, .timeline, .quick-list, .assure-grid, .footer-top, .compare-head, .compare-row, .news-item {
  grid-template-columns: 1fr;
 }
 .stage-panel { grid-template-columns: 1fr; }
 .stage-visual, .stage-visual img { min-height: 320px; height: 320px; }
 .footer-links { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
 .container { width: min(var(--container), calc(100% - 28px)); }
 .stage-title { font-size: 2rem; }
 .metric-board { grid-template-columns: 1fr; }
 .metric-item { border-right: 0; }
 .footer-links, .footer-bottom { grid-template-columns: 1fr; display: grid; }
 .stage-actions .button, .contact-card .button { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
 .ticker-track { animation: none; flex-wrap: wrap; width: auto; padding: 12px 16px; }
}

/* roulang page: category3 */
:root {
 --bg:#070b17;
 --bg-soft:#0c1223;
 --panel:#10182c;
 --panel-light:#151f38;
 --primary:#5b7cfa;
 --primary-dark:#3f5dde;
 --cyan:#62d9ff;
 --text:#f5f7ff;
 --muted:#9ba8c5;
 --muted-2:#71809e;
 --line:rgba(166,184,255,.14);
 --line-bright:rgba(166,184,255,.28);
 --green:#74e0b0;
 --orange:#ffbf73;
 --radius-lg:28px;
 --radius-md:18px;
 --radius-sm:12px;
 --shadow:0 24px 70px rgba(0,0,0,.28);
 --container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;
 color:var(--text);
 background:
 radial-gradient(circle at 86% 5%,rgba(73,103,255,.18),transparent 25rem),
 radial-gradient(circle at 4% 34%,rgba(34,177,232,.08),transparent 22rem),
 var(--bg);
 font-family:"Noto Sans SC","Inter",sans-serif;
 font-size:16px;
 line-height:1.75;
 overflow-x:hidden;
}
a{color:inherit;text-decoration:none;transition:.25s ease}
img{display:block;max-width:100%}
button,input,textarea{font:inherit}
button:focus,a:focus,input:focus,textarea:focus{outline:3px solid rgba(98,217,255,.35);outline-offset:3px}
.container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
.section{position:relative;padding:108px 0}
.section-soft{background:linear-gradient(180deg,rgba(15,23,45,.56),rgba(9,14,28,.35));border-top:1px solid rgba(166,184,255,.06);border-bottom:1px solid rgba(166,184,255,.06)}
.section-head{max-width:740px;margin-bottom:46px}
.section-head.split{max-width:none;display:flex;justify-content:space-between;align-items:flex-end;gap:28px}
.eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--cyan);font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;margin-bottom:15px}
.eyebrow:before{content:"";width:24px;height:1px;background:var(--cyan);box-shadow:0 0 14px var(--cyan)}
h1,h2,h3,h4,p{margin-top:0}
h1,h2,h3,h4{letter-spacing:-.04em}
h1{font-size:clamp(2.5rem,5vw,5rem);line-height:1.08;margin-bottom:24px}
h2{font-size:clamp(2rem,3.4vw,3.25rem);line-height:1.15;margin-bottom:18px}
h3{font-size:1.25rem;line-height:1.4;margin-bottom:12px}
.lead{max-width:720px;color:var(--muted);font-size:1.08rem;line-height:1.9}
.muted{color:var(--muted)}
.site-header{position:sticky;top:0;z-index:30;border-bottom:1px solid rgba(166,184,255,.1);background:rgba(7,11,23,.82);backdrop-filter:blur(22px)}
.nav-wrap{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:inline-flex;align-items:center;gap:11px;min-width:max-content;font-size:1.12rem;font-weight:800;letter-spacing:-.03em}
.brand-mark{width:34px;height:34px;display:grid;place-items:center;border-radius:11px;color:#fff;background:linear-gradient(135deg,var(--primary),var(--cyan));box-shadow:0 9px 28px rgba(91,124,250,.36)}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{padding:10px 14px;color:var(--muted);border-radius:10px;font-size:.93rem;font-weight:600}
.main-nav a:hover,.main-nav a.active{color:var(--text);background:rgba(116,139,255,.12)}
.nav-download{display:inline-flex!important;align-items:center;gap:8px;color:#fff!important;background:var(--primary)!important;box-shadow:0 10px 24px rgba(91,124,250,.25)}
.nav-download:hover{background:var(--primary-dark)!important;transform:translateY(-2px)}
.nav-toggle{display:none;border:1px solid var(--line);color:var(--text);background:transparent;border-radius:10px;padding:8px 11px;cursor:pointer}
.page-hero{padding:94px 0 78px;position:relative;overflow:hidden}
.page-hero:after{content:"";position:absolute;width:420px;height:420px;right:-150px;top:20px;border-radius:50%;background:rgba(91,124,250,.14);filter:blur(80px);pointer-events:none}
.hero-layout{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.hero-copy{max-width:720px}
.hero-copy h1 span{color:var(--cyan)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.button{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:48px;padding:0 20px;border:1px solid transparent;border-radius:12px;font-weight:700;cursor:pointer;transition:.25s ease}
.button-primary{color:#fff;background:var(--primary);box-shadow:0 12px 30px rgba(91,124,250,.28)}
.button-primary:hover{color:#fff;background:var(--primary-dark);transform:translateY(-2px)}
.button-ghost{color:var(--text);border-color:var(--line-bright);background:rgba(255,255,255,.04)}
.button-ghost:hover{color:#fff;border-color:var(--cyan);background:rgba(98,217,255,.08)}
.hero-note{display:flex;align-items:center;gap:10px;color:#b4c0df;font-size:.9rem;margin-top:22px}
.hero-panel{position:relative;min-height:390px}
.glow-orb{position:absolute;right:8%;top:7%;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(98,217,255,.34),rgba(91,124,250,.1) 52%,transparent 70%);filter:blur(8px)}
.price-board{position:absolute;left:12%;top:22px;width:74%;padding:25px;border:1px solid var(--line-bright);border-radius:24px;background:linear-gradient(145deg,rgba(28,44,87,.92),rgba(13,20,39,.94));box-shadow:var(--shadow);transform:rotate(-3deg)}
.price-board:before{content:"";position:absolute;inset:0;border-radius:24px;background:linear-gradient(120deg,rgba(255,255,255,.1),transparent 34%);pointer-events:none}
.board-top{display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:.84rem}
.board-status{display:inline-flex;align-items:center;gap:6px;color:var(--green);font-size:.78rem}
.board-status i{font-size:.46rem}
.board-price{display:flex;align-items:baseline;gap:5px;margin:30px 0 22px}
.board-price strong{font-size:3.3rem;line-height:1;color:#fff}
.board-price span{color:var(--muted)}
.mini-bars{display:grid;gap:10px}
.mini-bar{display:grid;grid-template-columns:72px 1fr 42px;align-items:center;gap:10px;color:var(--muted);font-size:.78rem}
.bar-track{height:6px;border-radius:9px;background:rgba(255,255,255,.1);overflow:hidden}
.bar-track i{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--primary),var(--cyan))}
.side-card{position:absolute;padding:17px 18px;border:1px solid var(--line);border-radius:17px;background:rgba(16,24,44,.92);box-shadow:0 18px 45px rgba(0,0,0,.26);backdrop-filter:blur(15px)}
.side-card strong{display:block;font-size:1.13rem;margin-bottom:3px}
.side-card small{color:var(--muted);font-size:.78rem}
.side-card.one{right:0;top:2px;transform:rotate(6deg)}
.side-card.two{left:0;bottom:28px;transform:rotate(4deg)}
.side-card i{color:var(--cyan);margin-right:8px}
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:26px;border:1px solid var(--line);border-radius:20px;overflow:hidden;background:var(--line)}
.stat-item{padding:25px 24px;background:rgba(15,23,45,.8)}
.stat-item strong{display:block;font-size:1.8rem;line-height:1.2;margin-bottom:5px}
.stat-item span{font-size:.87rem;color:var(--muted)}
.plan-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.plan-card{position:relative;display:flex;flex-direction:column;padding:27px 24px 24px;border:1px solid var(--line);border-radius:var(--radius-md);background:rgba(16,24,44,.8);transition:.3s ease}
.plan-card:hover{transform:translateY(-7px);border-color:rgba(98,217,255,.45);box-shadow:0 20px 45px rgba(0,0,0,.2)}
.plan-card.featured{border-color:rgba(98,217,255,.48);background:linear-gradient(155deg,rgba(32,52,104,.9),rgba(16,24,44,.94));box-shadow:0 18px 50px rgba(30,67,160,.2)}
.plan-badge{position:absolute;right:18px;top:18px;padding:4px 9px;border-radius:99px;color:#dff9ff;background:rgba(98,217,255,.14);font-size:.72rem;font-weight:700}
.plan-icon{width:42px;height:42px;display:grid;place-items:center;border-radius:13px;color:var(--cyan);background:rgba(98,217,255,.1);margin-bottom:20px}
.plan-card h3{margin-bottom:5px}
.plan-subtitle{color:var(--muted);font-size:.86rem;min-height:49px}
.plan-price{display:flex;align-items:baseline;gap:3px;margin:20px 0 19px}
.plan-price strong{font-size:2.25rem;line-height:1}
.plan-price span{color:var(--muted);font-size:.83rem}
.plan-list{list-style:none;margin:0 0 23px;padding:0;display:grid;gap:11px;color:#cbd4ec;font-size:.9rem}
.plan-list li{display:flex;gap:9px;align-items:flex-start}
.plan-list i{color:var(--green);margin-top:5px;font-size:.76rem}
.plan-card .button{width:100%;margin-top:auto}
.value-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:60px;align-items:start}
.value-box{padding:30px;border-radius:var(--radius-lg);border:1px solid var(--line);background:linear-gradient(145deg,rgba(20,32,65,.85),rgba(13,19,36,.72))}
.value-box .big-number{font-size:4.5rem;line-height:1;font-weight:800;color:var(--cyan);letter-spacing:-.08em}
.value-box p{color:var(--muted);margin:18px 0 0}
.value-list{display:grid;gap:13px}
.value-row{display:grid;grid-template-columns:44px 1fr auto;align-items:center;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.value-row:last-child{border-bottom:0}
.value-row .row-icon{width:40px;height:40px;display:grid;place-items:center;border-radius:12px;color:var(--cyan);background:rgba(98,217,255,.09)}
.value-row h3{font-size:1rem;margin:0 0 3px}
.value-row p{margin:0;color:var(--muted);font-size:.86rem}
.value-row b{color:var(--text);font-size:.9rem;white-space:nowrap}
.matrix{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.matrix-card{padding:28px;border:1px solid var(--line);border-radius:var(--radius-md);background:rgba(16,24,44,.72)}
.matrix-card:nth-child(2){background:linear-gradient(145deg,rgba(27,41,81,.85),rgba(16,24,44,.7))}
.matrix-head{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:17px}
.matrix-head i{font-size:1.35rem;color:var(--cyan)}
.matrix-card p{color:var(--muted);font-size:.92rem;margin-bottom:18px}
.tag-list{display:flex;flex-wrap:wrap;gap:8px}
.tag{padding:6px 10px;border-radius:8px;color:#cbd7fa;background:rgba(116,139,255,.1);font-size:.78rem}
.compare-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-md)}
.compare-table{width:100%;min-width:720px;border-collapse:collapse;background:rgba(13,19,36,.72)}
.compare-table th,.compare-table td{padding:17px 20px;border-bottom:1px solid var(--line);text-align:left}
.compare-table th{color:#dce5ff;font-size:.84rem;background:rgba(116,139,255,.08)}
.compare-table td{color:var(--muted);font-size:.9rem}
.compare-table td:first-child{color:var(--text);font-weight:600}
.compare-table tr:last-child td{border-bottom:0}
.compare-table .check{color:var(--green)}
.service-layout{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.service-card{padding:29px;border:1px solid var(--line);border-radius:var(--radius-md);background:rgba(16,24,44,.72)}
.service-card h3{display:flex;align-items:center;gap:11px}
.service-card h3 i{color:var(--cyan)}
.service-card p{color:var(--muted);font-size:.92rem;margin-bottom:0}
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden}
.timeline-item{position:relative;padding:27px 22px;background:rgba(16,24,44,.64);border-right:1px solid var(--line)}
.timeline-item:last-child{border-right:0}
.timeline-no{display:block;color:var(--cyan);font-weight:800;font-size:.76rem;letter-spacing:.12em;margin-bottom:18px}
.timeline-item h3{font-size:1.04rem}
.timeline-item p{color:var(--muted);font-size:.86rem;margin:0}
.faq-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.faq-item{padding:23px 24px;border:1px solid var(--line);border-radius:var(--radius-md);background:rgba(16,24,44,.7)}
.faq-item h3{display:flex;gap:12px;font-size:1rem;margin-bottom:9px}
.faq-item h3 i{color:var(--cyan);font-size:.86rem;margin-top:5px}
.faq-item p{color:var(--muted);font-size:.9rem;margin:0}
.cta-box{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:42px 46px;border:1px solid rgba(98,217,255,.24);border-radius:var(--radius-lg);background:linear-gradient(110deg,rgba(28,48,97,.9),rgba(15,25,52,.84));box-shadow:var(--shadow)}
.cta-box h2{font-size:clamp(1.8rem,3vw,2.7rem);margin-bottom:10px}
.cta-box p{color:#becbea;margin:0;max-width:650px}
.site-footer{padding:62px 0 25px;border-top:1px solid var(--line);background:rgba(4,7,15,.56)}
.footer-top{display:flex;justify-content:space-between;gap:60px;padding-bottom:45px}
.footer-brand{max-width:390px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{color:var(--muted);font-size:.9rem}
.footer-links{display:flex;gap:90px}
.footer-column{display:flex;flex-direction:column;gap:11px;min-width:120px}
.footer-column h4{font-size:.92rem;margin-bottom:7px}
.footer-column a{color:var(--muted);font-size:.88rem}
.footer-column a:hover{color:var(--cyan)}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:22px;border-top:1px solid var(--line);color:var(--muted-2);font-size:.78rem}
@media(max-width:1024px){
 .main-nav a{padding:9px 9px;font-size:.86rem}
 .hero-layout{gap:35px}
 .plan-grid{grid-template-columns:repeat(2,1fr)}
 .timeline{grid-template-columns:repeat(2,1fr)}
 .timeline-item:nth-child(2){border-right:0}
 .timeline-item:nth-child(-n+2){border-bottom:1px solid var(--line)}
}
@media(max-width:768px){
 .container{width:min(var(--container),calc(100% - 34px))}
 .section{padding:78px 0}
 .nav-wrap{min-height:70px}
 .nav-toggle{display:block}
 .main-nav{display:none;position:absolute;left:17px;right:17px;top:75px;padding:12px;border:1px solid var(--line);border-radius:16px;background:rgba(12,18,35,.97);box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
 .main-nav.open{display:flex}
 .main-nav a{padding:12px 14px}
 .nav-download{justify-content:center;margin-top:5px}
 .page-hero{padding:70px 0 55px}
 .hero-layout,.value-layout,.service-layout{grid-template-columns:1fr;gap:38px}
 .hero-panel{min-height:345px}
 .stat-strip{grid-template-columns:repeat(2,1fr)}
 .section-head.split{display:block}
 .section-head.split .lead{margin-top:18px}
 .matrix,.faq-list{grid-template-columns:1fr}
 .cta-box{display:block;padding:32px 25px}
 .cta-box .button{margin-top:24px}
 .footer-top{display:block}
 .footer-links{margin-top:34px;gap:55px}
 .footer-bottom{display:block}
 .footer-bottom span{display:block;margin-bottom:7px}
}
@media(max-width:520px){
 h1{font-size:2.55rem}
 h2{font-size:2rem}
 .hero-actions .button{width:100%}
 .price-board{left:4%;width:88%;padding:20px}
 .side-card.one{right:-3px}
 .side-card.two{left:-3px;bottom:17px}
 .board-price strong{font-size:2.7rem}
 .plan-grid{grid-template-columns:1fr}
 .timeline{grid-template-columns:1fr}
 .timeline-item{border-right:0;border-bottom:1px solid var(--line)}
 .timeline-item:last-child{border-bottom:0}
 .stat-item{padding:20px 15px}
 .stat-item strong{font-size:1.45rem}
 .value-box .big-number{font-size:3.7rem}
 .footer-links{gap:25px;justify-content:space-between}
}

/* roulang page: category4 */
:root{
 --bg:#070b17;--bg-soft:#0c1223;--panel:#10182c;--panel-light:#151f38;
 --primary:#5b7cfa;--primary-dark:#3f5dde;--cyan:#62d9ff;--text:#f5f7ff;
 --muted:#9ba8c5;--muted-2:#71809e;--line:rgba(166,184,255,.14);
 --line-bright:rgba(166,184,255,.28);--radius-lg:28px;--radius-md:18px;
 --radius-sm:12px;--shadow:0 24px 70px rgba(0,0,0,.28);--container:1200px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--text);background:radial-gradient(circle at 84% 4%,rgba(73,103,255,.18),transparent 25rem),radial-gradient(circle at 4% 30%,rgba(34,177,232,.08),transparent 22rem),var(--bg);font-family:"Noto Sans SC","Inter",sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none;transition:.25s ease}
img{display:block;max-width:100%}
button,input,textarea{font:inherit}
button:focus,a:focus,input:focus,textarea:focus{outline:3px solid rgba(98,217,255,.35);outline-offset:3px}
.container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
.section{position:relative;padding:108px 0}
.section-soft{background:linear-gradient(180deg,rgba(15,23,45,.56),rgba(9,14,28,.35));border-top:1px solid rgba(166,184,255,.06);border-bottom:1px solid rgba(166,184,255,.06)}
.section-head{max-width:720px;margin-bottom:46px}
.eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--cyan);font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;margin-bottom:15px}
.eyebrow:before{content:"";width:24px;height:1px;background:var(--cyan);box-shadow:0 0 14px var(--cyan)}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-.04em;line-height:1.2}
h1{font-size:clamp(2.5rem,6vw,5.4rem);max-width:850px}
h2{font-size:clamp(2rem,4vw,3.2rem)}
h3{font-size:1.25rem}
.lead{max-width:720px;color:var(--muted);font-size:1.08rem;line-height:1.9}
.muted{color:var(--muted)}
.site-header{position:sticky;top:0;z-index:30;border-bottom:1px solid rgba(166,184,255,.1);background:rgba(7,11,23,.82);backdrop-filter:blur(22px)}
.nav-wrap{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:inline-flex;align-items:center;gap:11px;min-width:max-content;font-size:1.12rem;font-weight:800;letter-spacing:-.03em}
.brand-mark{width:34px;height:34px;display:grid;place-items:center;border-radius:11px;color:white;background:linear-gradient(135deg,var(--primary),var(--cyan));box-shadow:0 9px 28px rgba(91,124,250,.36)}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{padding:10px 14px;color:var(--muted);border-radius:10px;font-size:.93rem;font-weight:600}
.main-nav a:hover,.main-nav a.active{color:var(--text);background:rgba(116,139,255,.12)}
.nav-download{display:inline-flex!important;align-items:center;gap:8px;color:#fff!important;background:var(--primary)!important;box-shadow:0 10px 24px rgba(91,124,250,.25)}
.nav-download:hover{background:var(--primary-dark)!important;transform:translateY(-2px)}
.nav-toggle{display:none;border:1px solid var(--line);color:var(--text);background:transparent;border-radius:10px;padding:8px 11px;cursor:pointer}
.page-hero{padding:90px 0 78px;position:relative;overflow:hidden}
.page-hero:after{content:"";position:absolute;width:520px;height:520px;right:-180px;top:10px;background:rgba(91,124,250,.16);filter:blur(90px);border-radius:50%;pointer-events:none}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:stretch}
.hero-copy{padding:25px 0 15px}
.hero-copy .lead{margin:28px 0 0}
.hero-panel{min-height:355px;padding:30px;border:1px solid var(--line);border-radius:var(--radius-lg);background:linear-gradient(145deg,rgba(25,42,85,.86),rgba(14,22,43,.9)),url("https://images.unsplash.com/photo-1451187580459-43490279c0fa?auto=format&fit=crop&w=1200&q=85") center/cover;box-shadow:var(--shadow);position:relative;overflow:hidden}
.hero-panel:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(7,11,23,.08),rgba(7,11,23,.78))}
.hero-panel>*{position:relative;z-index:1}
.status-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:56px;color:#d9e2ff;font-size:.86rem}
.status-dot{display:inline-flex;align-items:center;gap:8px}
.status-dot i{color:#55e5a0;font-size:.65rem;box-shadow:0 0 12px #55e5a0}
.signal-bars{display:flex;align-items:end;gap:4px;height:25px}
.signal-bars span{width:5px;border-radius:4px;background:var(--cyan)}
.signal-bars span:nth-child(1){height:8px}.signal-bars span:nth-child(2){height:14px}.signal-bars span:nth-child(3){height:20px}.signal-bars span:nth-child(4){height:25px}
.panel-number{font-size:4.2rem;line-height:1;font-weight:800;letter-spacing:-.08em}
.panel-number small{font-size:1rem;letter-spacing:0;color:var(--cyan);margin-left:8px}
.panel-caption{color:#b8c6e8;margin-top:12px}
.button{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:48px;padding:0 20px;border:1px solid transparent;border-radius:12px;font-weight:700;cursor:pointer;transition:.25s ease}
.button-primary{color:#fff;background:var(--primary);box-shadow:0 12px 30px rgba(91,124,250,.28)}
.button-primary:hover{color:#fff;background:var(--primary-dark);transform:translateY(-2px)}
.button-ghost{color:var(--text);border-color:var(--line-bright);background:rgba(255,255,255,.04)}
.button-ghost:hover{color:#fff;border-color:var(--cyan);background:rgba(98,217,255,.08)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}
.badge{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.045);color:#cdd8f3;font-size:.84rem}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.metric{padding:25px;border:1px solid var(--line);border-radius:var(--radius-md);background:rgba(16,24,44,.76)}
.metric strong{display:block;font-size:2rem;letter-spacing:-.05em}
.metric span{display:block;margin-top:6px;color:var(--muted);font-size:.9rem}
.matrix{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.matrix-card,.guide-card,.faq-item,.notice,.compare-box{border:1px solid var(--line);background:rgba(16,24,44,.72);border-radius:var(--radius-md);transition:.25s ease}
.matrix-card:hover,.guide-card:hover,.faq-item:hover{transform:translateY(-4px);border-color:var(--line-bright);box-shadow:0 18px 38px rgba(0,0,0,.18)}
.matrix-card{padding:25px;display:flex;gap:17px}
.icon-box{flex:0 0 44px;width:44px;height:44px;display:grid;place-items:center;border-radius:14px;color:var(--cyan);background:rgba(98,217,255,.1);border:1px solid rgba(98,217,255,.18)}
.matrix-card p,.guide-card p{color:var(--muted);font-size:.93rem;margin:10px 0 0}
.split{display:grid;grid-template-columns:.75fr 1.25fr;gap:50px;align-items:start}
.steps{display:grid;gap:14px}
.step{display:grid;grid-template-columns:44px 1fr;gap:17px;padding:20px 0;border-bottom:1px solid var(--line)}
.step:last-child{border-bottom:0}
.step-num{width:38px;height:38px;display:grid;place-items:center;border-radius:50%;color:#fff;background:linear-gradient(135deg,var(--primary),#7c9bff);font-weight:800}
.step p{margin:7px 0 0;color:var(--muted);font-size:.94rem}
.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.guide-card{padding:26px}
.guide-card .icon-box{margin-bottom:25px}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.compare-box{padding:28px}
.compare-box.good{background:linear-gradient(145deg,rgba(55,76,155,.45),rgba(16,24,44,.8));border-color:rgba(98,217,255,.3)}
.compare-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.compare-title span{color:var(--cyan);font-weight:800;font-size:.85rem}
.check-list{list-style:none;padding:0;margin:0;display:grid;gap:13px}
.check-list li{display:flex;gap:10px;color:#cad5ef;font-size:.94rem}
.check-list i{color:#62d9ff;margin-top:6px}
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);padding-top:25px}
.timeline-item{position:relative;padding:0 22px 0 0}
.timeline-item:before{content:"";position:absolute;top:-32px;left:0;width:10px;height:10px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 6px rgba(91,124,250,.12)}
.timeline-item:not(:last-child):after{content:"";position:absolute;top:-28px;left:10px;width:calc(100% - 10px);height:1px;background:var(--line)}
.timeline-item strong{display:block;margin-bottom:9px}
.timeline-item p{color:var(--muted);font-size:.9rem;margin:0}
.notice{padding:25px 28px;display:flex;align-items:center;justify-content:space-between;gap:25px;background:linear-gradient(100deg,rgba(42,61,128,.42),rgba(16,24,44,.7))}
.notice p{margin:7px 0 0;color:var(--muted)}
.faq-list{display:grid;grid-template-columns:1fr 1fr;gap:15px}
.faq-item{padding:24px}
.faq-item h3{font-size:1.05rem;display:flex;gap:12px}
.faq-item h3 i{color:var(--cyan);font-size:.9rem;margin-top:5px}
.faq-item p{color:var(--muted);font-size:.92rem;margin:12px 0 0}
.cta{padding:80px 0}
.cta-box{position:relative;overflow:hidden;padding:58px;border-radius:var(--radius-lg);border:1px solid var(--line-bright);background:linear-gradient(135deg,rgba(57,78,170,.72),rgba(16,24,44,.9));box-shadow:var(--shadow)}
.cta-box:after{content:"";position:absolute;width:300px;height:300px;right:-80px;top:-110px;border:1px solid rgba(98,217,255,.25);border-radius:50%;box-shadow:0 0 0 30px rgba(98,217,255,.04),0 0 0 60px rgba(98,217,255,.03)}
.cta-box p{max-width:650px;color:#d4def8;margin:18px 0 28px}
.site-footer{padding:65px 0 25px;border-top:1px solid var(--line);background:rgba(4,7,15,.55)}
.footer-top{display:flex;justify-content:space-between;gap:50px}
.footer-brand{max-width:350px}.footer-brand p{color:var(--muted);font-size:.92rem;margin-top:18px}
.footer-links{display:flex;gap:80px}.footer-column{display:grid;align-content:start;gap:10px;min-width:130px}
.footer-column h4{font-size:.95rem;margin-bottom:8px}.footer-column a{color:var(--muted);font-size:.9rem}.footer-column a:hover{color:var(--cyan)}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:30px;margin-top:40px;border-top:1px solid var(--line);color:var(--muted-2);font-size:.8rem}
@media(max-width:1024px){.main-nav{gap:0}.main-nav a{padding:9px 10px}.hero-grid,.split{grid-template-columns:1fr}.hero-panel{min-height:320px}.metrics{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){.container{width:min(var(--container),calc(100% - 32px))}.section{padding:78px 0}.nav-toggle{display:block}.main-nav{display:none;position:absolute;left:16px;right:16px;top:70px;padding:12px;flex-direction:column;align-items:stretch;border:1px solid var(--line);border-radius:16px;background:rgba(12,18,35,.97);box-shadow:var(--shadow)}.main-nav.is-open{display:flex}.main-nav a{padding:13px 14px}.page-hero{padding:65px 0 55px}.matrix,.guide-grid,.faq-list,.compare{grid-template-columns:1fr}.timeline{grid-template-columns:1fr 1fr;gap:38px 18px}.timeline-item:after{display:none}.footer-top{display:block}.footer-links{margin-top:35px;gap:40px}}
@media(max-width:520px){h1{font-size:2.5rem}.hero-actions .button{width:100%}.metrics{grid-template-columns:1fr 1fr}.metric{padding:18px}.metric strong{font-size:1.55rem}.hero-panel{padding:23px}.panel-number{font-size:3.1rem}.notice{display:block;padding:23px}.notice .button{margin-top:20px;width:100%}.timeline{grid-template-columns:1fr}.footer-links{display:grid;grid-template-columns:1fr 1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:8px}}