/* roulang page: index */
:root {
      --bg: #070a0f;
      --bg-soft: #0e131b;
      --bg-panel: #111823;
      --bg-panel-2: #151d29;
      --surface: #f6f7f9;
      --surface-card: #ffffff;
      --surface-soft: #eef2f6;
      --text: #f7f8fa;
      --text-dark: #111722;
      --muted: #b8c0cc;
      --muted-dark: #657184;
      --line: rgba(255,255,255,.1);
      --line-dark: rgba(12,18,28,.1);
      --primary: #ff3b4f;
      --primary-2: #ff6574;
      --cyan: #16d6c8;
      --cyan-2: #22c7e8;
      --amber: #ffd166;
      --green: #56e39f;
      --radius-xl: 32px;
      --radius-lg: 24px;
      --radius-md: 18px;
      --radius-sm: 14px;
      --shadow-deep: 0 28px 80px rgba(0,0,0,.38);
      --shadow-soft: 0 18px 45px rgba(8,14,24,.14);
      --shadow-glow: 0 0 0 1px rgba(255,255,255,.08), 0 20px 70px rgba(255,59,79,.16);
      --container: 1220px;
      --ease: 220ms ease;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      min-height: 100vh;
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 18% 10%, rgba(255,59,79,.18), transparent 32%),
        radial-gradient(circle at 82% 0%, rgba(22,214,200,.12), transparent 28%),
        linear-gradient(180deg, #070a0f 0%, #0b1018 46%, #f3f5f8 46%, #f3f5f8 100%);
      line-height: 1.78;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--ease), border-color var(--ease), background var(--ease), transform var(--ease), box-shadow var(--ease);
    }

    a:hover {
      color: var(--cyan);
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    button,
    input,
    textarea,
    select {
      font: inherit;
    }

    ::selection {
      background: rgba(255,59,79,.32);
      color: #fff;
    }

    .site-shell {
      width: min(var(--container), calc(100% - 40px));
      margin: 0 auto;
    }

    .section {
      padding: 86px 0;
      position: relative;
    }

    .section.compact {
      padding: 64px 0;
    }

    .section-dark {
      color: var(--text);
    }

    .section-light {
      color: var(--text-dark);
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      color: var(--cyan);
      background: rgba(22,214,200,.08);
      border: 1px solid rgba(22,214,200,.18);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: .02em;
      margin-bottom: 14px;
    }

    .section-kicker::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 999px;
      background: var(--cyan);
      box-shadow: 0 0 16px rgba(22,214,200,.8);
    }

    .section-title {
      margin: 0;
      font-size: clamp(28px, 4vw, 44px);
      line-height: 1.18;
      letter-spacing: -.04em;
      font-weight: 800;
    }

    .section-desc {
      margin: 16px 0 0;
      max-width: 760px;
      color: var(--muted);
      font-size: 16px;
    }

    .section-light .section-desc {
      color: var(--muted-dark);
    }

    .btn {
      min-height: 46px;
      border-radius: 999px;
      padding: 11px 20px;
      font-weight: 800;
      letter-spacing: .01em;
      border: 0;
      transition: transform var(--ease), box-shadow var(--ease), background var(--ease), color var(--ease), border-color var(--ease);
    }

    .btn:focus-visible,
    .nav-card-link:focus-visible,
    .article-link:focus-visible,
    .footer-link:focus-visible,
    .form-control:focus-visible,
    .form-select:focus-visible {
      outline: 3px solid rgba(22,214,200,.38);
      outline-offset: 3px;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--primary-2));
      color: #fff;
      box-shadow: 0 14px 34px rgba(255,59,79,.26);
    }

    .btn-primary:hover,
    .btn-primary:focus {
      background: linear-gradient(135deg, #ff263d, #ff5365);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 18px 42px rgba(255,59,79,.34);
    }

    .btn-primary:active {
      transform: translateY(0);
      box-shadow: 0 10px 24px rgba(255,59,79,.24);
    }

    .btn-outline-console {
      color: var(--text);
      border: 1px solid rgba(255,255,255,.14);
      background: rgba(255,255,255,.05);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.06);
    }

    .btn-outline-console:hover {
      color: #fff;
      border-color: rgba(22,214,200,.46);
      background: rgba(22,214,200,.1);
      transform: translateY(-2px);
    }

    .btn-light-console {
      color: var(--text-dark);
      background: #fff;
      border: 1px solid var(--line-dark);
      box-shadow: var(--shadow-soft);
    }

    .btn-light-console:hover {
      color: var(--text-dark);
      border-color: rgba(255,59,79,.28);
      transform: translateY(-2px);
      box-shadow: 0 18px 48px rgba(12,18,28,.16);
    }

    .text-arrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--cyan);
      font-weight: 800;
      font-size: 14px;
    }

    .text-arrow span {
      transition: transform var(--ease);
    }

    .text-arrow:hover span {
      transform: translateX(4px);
    }

    .badge-soft {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 7px 11px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 700;
      color: var(--muted);
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(255,255,255,.1);
    }

    .badge-soft::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--primary);
      box-shadow: 0 0 14px rgba(255,59,79,.75);
    }

    .badge-new::before {
      background: var(--cyan);
      box-shadow: 0 0 14px rgba(22,214,200,.75);
    }

    .badge-guide::before {
      background: var(--amber);
      box-shadow: 0 0 14px rgba(255,209,102,.75);
    }

    .badge-update::before {
      background: var(--green);
      box-shadow: 0 0 14px rgba(86,227,159,.75);
    }

    .site-header {
      position: sticky;
      top: 16px;
      z-index: 50;
      padding: 16px 0 0;
    }

    .nav-panel {
      width: min(var(--container), calc(100% - 40px));
      margin: 0 auto;
      padding: 10px;
      border-radius: 24px;
      background: rgba(14,19,27,.86);
      border: 1px solid rgba(255,255,255,.09);
      box-shadow: 0 18px 55px rgba(0,0,0,.34), inset 0 1px 0 rgba(255,255,255,.06);
      backdrop-filter: blur(18px);
    }

    .navbar {
      padding: 0;
    }

    .brand-lockup {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      font-weight: 900;
      letter-spacing: -.03em;
      font-size: 18px;
      white-space: nowrap;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 15px;
      display: grid;
      place-items: center;
      background:
        linear-gradient(135deg, rgba(255,59,79,.95), rgba(22,214,200,.82)),
        radial-gradient(circle at 20% 15%, rgba(255,255,255,.5), transparent 28%);
      box-shadow: 0 12px 30px rgba(255,59,79,.22);
      position: relative;
      overflow: hidden;
      flex: 0 0 auto;
    }

    .brand-mark::before {
      content: "";
      width: 0;
      height: 0;
      border-left: 12px solid #fff;
      border-top: 8px solid transparent;
      border-bottom: 8px solid transparent;
      transform: translateX(2px);
      filter: drop-shadow(0 3px 6px rgba(0,0,0,.2));
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      inset: 7px;
      border: 1px dashed rgba(255,255,255,.38);
      border-radius: 10px;
    }

    .navbar-toggler {
      border: 1px solid rgba(255,255,255,.12);
      border-radius: 15px;
      width: 46px;
      height: 42px;
      padding: 0;
      box-shadow: none !important;
      background: rgba(255,255,255,.05);
    }

    .navbar-toggler-icon {
      background-image: none;
      width: 20px;
      height: 14px;
      position: relative;
      border-top: 2px solid #fff;
      border-bottom: 2px solid #fff;
    }

    .navbar-toggler-icon::before {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      top: 5px;
      border-top: 2px solid #fff;
    }

    .nav-card-list {
      display: flex;
      align-items: center;
      gap: 8px;
      margin: 0 auto;
      padding: 0;
      list-style: none;
    }

    .nav-card-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      min-height: 42px;
      padding: 9px 14px;
      border-radius: 15px;
      color: var(--muted);
      background: rgba(255,255,255,.045);
      border: 1px solid rgba(255,255,255,.07);
      font-size: 14px;
      font-weight: 800;
    }

    .nav-card-link .nav-dot {
      width: 8px;
      height: 8px;
      border-radius: 999px;
      background: rgba(184,192,204,.55);
      transition: background var(--ease), box-shadow var(--ease);
    }

    .nav-card-link:hover,
    .nav-card-link.active {
      color: #fff;
      background: rgba(255,59,79,.14);
      border-color: rgba(255,59,79,.28);
    }

    .nav-card-link:hover .nav-dot,
    .nav-card-link.active .nav-dot {
      background: var(--primary);
      box-shadow: 0 0 14px rgba(255,59,79,.78);
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      min-height: 42px;
      padding: 10px 16px;
      border-radius: 999px;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), #ff6a78);
      font-size: 14px;
      font-weight: 900;
      box-shadow: 0 12px 28px rgba(255,59,79,.26);
      white-space: nowrap;
    }

    .nav-cta:hover {
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 18px 40px rgba(255,59,79,.34);
    }

    .hero {
      padding: 58px 0 84px;
      position: relative;
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: -120px 0 auto;
      height: 640px;
      background:
        linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
      background-size: 34px 34px;
      mask-image: linear-gradient(180deg, rgba(0,0,0,.9), transparent);
      pointer-events: none;
    }

    .hero-stage {
      position: relative;
      border-radius: var(--radius-xl);
      padding: 28px;
      background:
        linear-gradient(135deg, rgba(255,255,255,.08), rgba(255,255,255,.03)),
        radial-gradient(circle at 10% 12%, rgba(255,59,79,.22), transparent 30%),
        radial-gradient(circle at 92% 20%, rgba(22,214,200,.14), transparent 35%),
        var(--bg-panel);
      border: 1px solid rgba(255,255,255,.1);
      box-shadow: var(--shadow-deep);
      overflow: hidden;
    }

    .hero-stage::after {
      content: "";
      position: absolute;
      right: -80px;
      bottom: -120px;
      width: 360px;
      height: 360px;
      border-radius: 50%;
      background: rgba(255,59,79,.18);
      filter: blur(18px);
      pointer-events: none;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.04fr .96fr;
      gap: 24px;
      position: relative;
      z-index: 1;
    }

    .hero-main-card {
      min-height: 506px;
      border-radius: 28px;
      padding: clamp(28px, 5vw, 54px);
      background:
        linear-gradient(180deg, rgba(7,10,15,.58), rgba(7,10,15,.88)),
        radial-gradient(circle at 82% 20%, rgba(255,59,79,.14), transparent 34%);
      border: 1px solid rgba(255,255,255,.1);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .hero-label-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 22px;
    }

    h1 {
      margin: 0;
      max-width: 760px;
      font-size: clamp(34px, 5.4vw, 60px);
      line-height: 1.12;
      font-weight: 900;
      letter-spacing: -.06em;
    }

    .hero-lead {
      margin: 20px 0 0;
      max-width: 690px;
      color: var(--muted);
      font-size: 17px;
      line-height: 1.88;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 28px;
    }

    .hero-data-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      margin-top: 34px;
    }

    .hero-data {
      border-radius: 20px;
      padding: 16px;
      background: rgba(255,255,255,.055);
      border: 1px solid rgba(255,255,255,.08);
    }

    .hero-data strong {
      display: block;
      color: #fff;
      font-size: 22px;
      line-height: 1;
      font-weight: 900;
      letter-spacing: -.03em;
    }

    .hero-data span {
      display: block;
      margin-top: 8px;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.5;
    }

    .hero-bento {
      display: grid;
      grid-template-columns: 1fr 1fr;
      grid-auto-rows: minmax(150px, auto);
      gap: 16px;
    }

    .dashboard-card {
      position: relative;
      border-radius: 24px;
      padding: 22px;
      background: rgba(255,255,255,.07);
      border: 1px solid rgba(255,255,255,.1);
      overflow: hidden;
      min-height: 150px;
      box-shadow: inset 0 1px 0 rgba(255,255,255,.06);
    }

    .dashboard-card.large {
      grid-column: span 2;
      min-height: 188px;
      background:
        linear-gradient(135deg, rgba(255,59,79,.16), rgba(22,214,200,.08)),
        rgba(255,255,255,.07);
    }

    .dashboard-card.tall {
      min-height: 216px;
    }

    .dashboard-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 20px;
    }

    .dashboard-title {
      color: #fff;
      font-size: 15px;
      font-weight: 900;
    }

    .status-pill {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 6px 10px;
      border-radius: 999px;
      color: var(--cyan);
      background: rgba(22,214,200,.09);
      border: 1px solid rgba(22,214,200,.16);
      font-size: 12px;
      font-weight: 800;
    }

    .status-pill::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 999px;
      background: var(--cyan);
      box-shadow: 0 0 10px rgba(22,214,200,.8);
    }

    .dashboard-number {
      color: #fff;
      font-size: 38px;
      line-height: 1;
      font-weight: 900;
      letter-spacing: -.04em;
    }

    .dashboard-note {
      margin: 10px 0 0;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.65;
    }

    .mini-bars {
      display: grid;
      gap: 8px;
      margin-top: 18px;
    }

    .mini-bar {
      height: 8px;
      border-radius: 999px;
      background: rgba(255,255,255,.08);
      overflow: hidden;
    }

    .mini-bar i {
      display: block;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--primary), var(--cyan));
    }

    .timeline-mini {
      display: grid;
      gap: 11px;
      margin-top: 16px;
    }

    .timeline-mini div {
      display: flex;
      align-items: center;
      gap: 9px;
      color: var(--muted);
      font-size: 13px;
    }

    .timeline-mini div::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 999px;
      background: var(--primary);
    }

    .live-panel {
      border-radius: var(--radius-xl);
      padding: 28px;
      background: var(--surface-card);
      color: var(--text-dark);
      border: 1px solid var(--line-dark);
      box-shadow: var(--shadow-soft);
    }

    .live-grid {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 22px;
      align-items: stretch;
      margin-top: 30px;
    }

    .kpi-stack {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
    }

    .kpi-card {
      border-radius: 22px;
      padding: 20px;
      min-height: 150px;
      background: linear-gradient(180deg, #fff, #f7f9fb);
      border: 1px solid var(--line-dark);
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }

    .kpi-card:hover {
      transform: translateY(-3px);
      border-color: rgba(22,214,200,.36);
      box-shadow: 0 18px 46px rgba(14,22,32,.12);
    }

    .kpi-card strong {
      display: block;
      font-size: 30px;
      line-height: 1;
      font-weight: 900;
      letter-spacing: -.04em;
      color: var(--text-dark);
    }

    .kpi-card span {
      display: block;
      margin-top: 10px;
      color: var(--muted-dark);
      font-size: 14px;
      line-height: 1.65;
    }

    .update-table {
      border-radius: 24px;
      overflow: hidden;
      background: #fff;
      border: 1px solid var(--line-dark);
    }

    .update-row {
      display: grid;
      grid-template-columns: 120px 1fr 120px;
      gap: 16px;
      align-items: center;
      padding: 17px 20px;
      border-bottom: 1px solid rgba(12,18,28,.08);
    }

    .update-row:last-child {
      border-bottom: 0;
    }

    .update-time {
      color: var(--muted-dark);
      font-weight: 800;
      font-size: 13px;
    }

    .update-title {
      font-weight: 900;
      color: var(--text-dark);
    }

    .update-state {
      justify-self: end;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 10px;
      border-radius: 999px;
      color: #0f766e;
      background: rgba(22,214,200,.1);
      font-size: 12px;
      font-weight: 900;
    }

    .quick-grid {
      display: grid;
      grid-template-columns: 1.25fr .75fr;
      gap: 22px;
      margin-top: 30px;
    }

    .matrix-card {
      border-radius: 26px;
      padding: 26px;
      background: rgba(255,255,255,.065);
      border: 1px solid rgba(255,255,255,.1);
      color: var(--text);
      transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease), background var(--ease);
      overflow: hidden;
      position: relative;
    }

    .matrix-card:hover {
      transform: translateY(-4px);
      border-color: rgba(22,214,200,.38);
      background: rgba(255,255,255,.085);
      box-shadow: 0 20px 60px rgba(0,0,0,.24);
    }

    .matrix-card.big {
      min-height: 342px;
      background:
        radial-gradient(circle at 80% 10%, rgba(255,59,79,.16), transparent 34%),
        rgba(255,255,255,.065);
    }

    .matrix-small-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .icon-bubble {
      width: 46px;
      height: 46px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      background: rgba(22,214,200,.1);
      border: 1px solid rgba(22,214,200,.18);
      color: var(--cyan);
      font-size: 20px;
      font-weight: 900;
      margin-bottom: 18px;
    }

    .matrix-card h3 {
      margin: 0;
      font-size: 22px;
      font-weight: 900;
      letter-spacing: -.03em;
    }

    .matrix-card p {
      margin: 12px 0 0;
      color: var(--muted);
      font-size: 15px;
    }

    .matrix-card.big p {
      max-width: 620px;
      font-size: 16px;
    }

    .feature-list {
      display: grid;
      gap: 12px;
      margin: 24px 0 0;
      padding: 0;
      list-style: none;
    }

    .feature-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      color: var(--muted);
      font-size: 14px;
    }

    .feature-list li::before {
      content: "✓";
      display: inline-grid;
      place-items: center;
      width: 20px;
      height: 20px;
      border-radius: 50%;
      color: #071014;
      background: var(--cyan);
      font-size: 12px;
      font-weight: 900;
      flex: 0 0 auto;
      margin-top: 2px;
    }

    .content-panel {
      border-radius: var(--radius-xl);
      background: #fff;
      color: var(--text-dark);
      border: 1px solid var(--line-dark);
      box-shadow: var(--shadow-soft);
      padding: 28px;
      margin-top: 30px;
    }

    .content-layout {
      display: grid;
      grid-template-columns: .92fr 1.08fr;
      gap: 20px;
    }

    .article-card {
      border-radius: 24px;
      padding: 22px;
      border: 1px solid rgba(12,18,28,.1);
      background: linear-gradient(180deg, #fff, #f8fafc);
      transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
    }

    .article-card:hover {
      transform: translateY(-3px);
      border-color: rgba(255,59,79,.28);
      box-shadow: 0 18px 46px rgba(12,18,28,.12);
    }

    .article-card.featured {
      min-height: 100%;
      background:
        radial-gradient(circle at 90% 12%, rgba(255,59,79,.12), transparent 34%),
        linear-gradient(180deg, #fff, #f6f8fb);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .article-meta {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px;
      margin-bottom: 14px;
    }

    .article-badge {
      display: inline-flex;
      align-items: center;
      padding: 5px 9px;
      border-radius: 999px;
      color: #c72539;
      background: rgba(255,59,79,.09);
      font-size: 12px;
      font-weight: 900;
    }

    .article-time {
      color: var(--muted-dark);
      font-size: 12px;
      font-weight: 800;
    }

    .article-card h3 {
      margin: 0;
      color: var(--text-dark);
      font-size: 22px;
      line-height: 1.35;
      font-weight: 900;
      letter-spacing: -.03em;
      transition: color var(--ease);
    }

    .article-card:not(.featured) h3 {
      font-size: 17px;
    }

    .article-card:hover h3 {
      color: var(--primary);
    }

    .article-card p {
      margin: 12px 0 0;
      color: var(--muted-dark);
      font-size: 14px;
      line-height: 1.75;
    }

    .article-list {
      display: grid;
      gap: 14px;
    }

    .article-link {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 14px;
      margin-top: 18px;
      color: var(--cyan);
      font-size: 14px;
      font-weight: 900;
    }

    .article-link .arrow {
      transition: transform var(--ease);
    }

    .article-card:hover .article-link .arrow {
      transform: translateX(5px);
    }

    .empty-state {
      grid-column: 1 / -1;
      border-radius: 24px;
      padding: 34px;
      text-align: center;
      background: #f8fafc;
      border: 1px dashed rgba(12,18,28,.18);
    }

    .empty-icon {
      width: 58px;
      height: 58px;
      border-radius: 20px;
      margin: 0 auto 14px;
      display: grid;
      place-items: center;
      color: var(--primary);
      background: rgba(255,59,79,.08);
      font-size: 26px;
      font-weight: 900;
    }

    .safety-wrap {
      display: grid;
      grid-template-columns: .95fr 1.05fr;
      gap: 24px;
      align-items: stretch;
      margin-top: 30px;
    }

    .safety-card {
      border-radius: 28px;
      padding: 28px;
      background: rgba(255,255,255,.07);
      border: 1px solid rgba(255,255,255,.1);
      min-height: 100%;
    }

    .safety-card h3 {
      margin: 0;
      font-size: 24px;
      font-weight: 900;
      letter-spacing: -.03em;
    }

    .safety-card p {
      margin: 14px 0 0;
      color: var(--muted);
    }

    .safety-steps {
      display: grid;
      gap: 14px;
    }

    .safety-step {
      display: grid;
      grid-template-columns: 46px 1fr;
      gap: 14px;
      align-items: flex-start;
      padding: 18px;
      border-radius: 22px;
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(255,255,255,.09);
    }

    .step-num {
      width: 46px;
      height: 46px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--cyan));
      font-weight: 900;
      box-shadow: 0 14px 28px rgba(22,214,200,.16);
    }

    .safety-step strong {
      display: block;
      color: #fff;
      font-weight: 900;
      margin-bottom: 4px;
    }

    .safety-step span {
      color: var(--muted);
      font-size: 14px;
    }

    .compare-board {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 22px;
      margin-top: 30px;
    }

    .compare-card {
      border-radius: 28px;
      padding: 28px;
      border: 1px solid var(--line-dark);
      background: #fff;
      box-shadow: var(--shadow-soft);
      overflow: hidden;
      position: relative;
    }

    .compare-card.dim {
      background: linear-gradient(180deg, #f9fafb, #eef2f6);
    }

    .compare-card.clear {
      border-color: rgba(22,214,200,.22);
      background:
        radial-gradient(circle at 90% 0%, rgba(22,214,200,.12), transparent 34%),
        #fff;
    }

    .compare-card h3 {
      margin: 0 0 18px;
      font-size: 24px;
      font-weight: 900;
      letter-spacing: -.03em;
    }

    .compare-list {
      display: grid;
      gap: 12px;
      padding: 0;
      margin: 0;
      list-style: none;
    }

    .compare-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      padding: 14px;
      border-radius: 18px;
      background: rgba(12,18,28,.035);
      color: var(--muted-dark);
      font-size: 14px;
    }

    .compare-list li::before {
      content: "";
      width: 9px;
      height: 9px;
      border-radius: 999px;
      flex: 0 0 auto;
      margin-top: 8px;
      background: #aab3bf;
    }

    .compare-card.clear .compare-list li {
      background: rgba(22,214,200,.06);
      color: #344054;
    }

    .compare-card.clear .compare-list li::before {
      background: var(--cyan);
      box-shadow: 0 0 12px rgba(22,214,200,.55);
    }

    .progress-line {
      height: 9px;
      border-radius: 999px;
      background: rgba(12,18,28,.08);
      overflow: hidden;
      margin-top: 22px;
    }

    .progress-line span {
      display: block;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--primary), var(--cyan));
    }

    .faq-shell {
      max-width: 980px;
      margin: 30px auto 0;
    }

    .accordion {
      display: grid;
      gap: 14px;
    }

    .accordion-item {
      border: 1px solid rgba(12,18,28,.1);
      border-radius: 22px !important;
      overflow: hidden;
      background: #fff;
      box-shadow: 0 14px 34px rgba(12,18,28,.06);
    }

    .accordion-button {
      color: var(--text-dark);
      background: #fff;
      font-weight: 900;
      font-size: 16px;
      padding: 20px 22px;
      box-shadow: none !important;
    }

    .accordion-button:not(.collapsed) {
      color: var(--text-dark);
      background: linear-gradient(90deg, rgba(255,59,79,.08), rgba(22,214,200,.06));
      box-shadow: inset 4px 0 0 var(--primary) !important;
    }

    .accordion-button::after {
      filter: grayscale(1);
      opacity: .68;
    }

    .accordion-button:focus {
      border-color: transparent;
      box-shadow: none;
    }

    .accordion-body {
      padding: 0 22px 22px;
      color: var(--muted-dark);
      font-size: 15px;
      line-height: 1.85;
      background: #fff;
    }

    .feedback-panel {
      border-radius: var(--radius-xl);
      padding: 30px;
      background:
        radial-gradient(circle at 8% 18%, rgba(255,59,79,.18), transparent 32%),
        radial-gradient(circle at 96% 4%, rgba(22,214,200,.14), transparent 30%),
        var(--bg-panel);
      border: 1px solid rgba(255,255,255,.1);
      box-shadow: var(--shadow-deep);
      overflow: hidden;
    }

    .feedback-grid {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 28px;
      align-items: stretch;
    }

    .feedback-copy {
      padding: 10px 0;
    }

    .feedback-copy h2 {
      margin: 16px 0 0;
      font-size: clamp(28px, 4vw, 42px);
      line-height: 1.18;
      font-weight: 900;
      letter-spacing: -.04em;
    }

    .feedback-copy p {
      margin: 16px 0 0;
      color: var(--muted);
    }

    .feedback-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 24px;
    }

    .form-panel {
      border-radius: 26px;
      padding: 24px;
      background: rgba(255,255,255,.08);
      border: 1px solid rgba(255,255,255,.11);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.06);
    }

    .form-label {
      color: #fff;
      font-weight: 800;
      font-size: 14px;
      margin-bottom: 8px;
    }

    .form-control,
    .form-select {
      min-height: 48px;
      border-radius: 16px;
      color: #fff;
      background-color: rgba(7,10,15,.58);
      border: 1px solid rgba(255,255,255,.12);
      box-shadow: none;
      transition: border-color var(--ease), box-shadow var(--ease), background var(--ease);
    }

    .form-control::placeholder {
      color: rgba(184,192,204,.72);
    }

    .form-control:focus,
    .form-select:focus {
      color: #fff;
      background-color: rgba(7,10,15,.74);
      border-color: rgba(22,214,200,.68);
      box-shadow: 0 0 0 4px rgba(22,214,200,.12);
    }

    textarea.form-control {
      min-height: 128px;
      resize: vertical;
    }

    .mobile-card {
      border-radius: 26px;
      padding: 24px;
      background: rgba(255,255,255,.065);
      border: 1px solid rgba(255,255,255,.1);
      margin-top: 22px;
      display: grid;
      grid-template-columns: 78px 1fr;
      gap: 16px;
      align-items: center;
    }

    .qr-placeholder {
      width: 78px;
      height: 78px;
      border-radius: 22px;
      display: grid;
      place-items: center;
      background:
        linear-gradient(90deg, rgba(255,255,255,.12) 1px, transparent 1px),
        linear-gradient(rgba(255,255,255,.12) 1px, transparent 1px),
        rgba(255,255,255,.06);
      background-size: 13px 13px;
      color: var(--cyan);
      font-weight: 900;
      border: 1px solid rgba(255,255,255,.12);
    }

    .mobile-card strong {
      display: block;
      color: #fff;
      font-weight: 900;
      margin-bottom: 4px;
    }

    .mobile-card span {
      color: var(--muted);
      font-size: 14px;
    }

    .site-footer {
      padding: 54px 0 38px;
      color: var(--text);
      background: #070a0f;
    }

    .footer-panel {
      border-radius: 28px;
      padding: 30px;
      background: rgba(255,255,255,.045);
      border: 1px solid rgba(255,255,255,.09);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.05);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 28px;
      align-items: start;
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-size: 18px;
      font-weight: 900;
      letter-spacing: -.03em;
      margin-bottom: 14px;
    }

    .footer-panel p {
      max-width: 650px;
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      justify-content: flex-end;
      gap: 10px;
    }

    .footer-link {
      padding: 8px 12px;
      border-radius: 999px;
      color: var(--muted);
      background: rgba(255,255,255,.05);
      border: 1px solid rgba(255,255,255,.08);
      font-size: 13px;
      font-weight: 800;
    }

    .footer-link:hover {
      color: #fff;
      background: rgba(22,214,200,.1);
      border-color: rgba(22,214,200,.24);
    }

    .footer-bottom {
      margin-top: 22px;
      padding-top: 20px;
      border-top: 1px solid rgba(255,255,255,.08);
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      gap: 14px;
      color: rgba(184,192,204,.76);
      font-size: 13px;
    }

    @media (max-width: 1199px) {
      .hero-grid,
      .live-grid,
      .quick-grid,
      .safety-wrap,
      .feedback-grid {
        grid-template-columns: 1fr;
      }

      .hero-main-card {
        min-height: auto;
      }

      .content-layout,
      .compare-board {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 991px) {
      body {
        background:
          radial-gradient(circle at 18% 8%, rgba(255,59,79,.15), transparent 28%),
          linear-gradient(180deg, #070a0f 0%, #0b1018 50%, #f3f5f8 50%, #f3f5f8 100%);
      }

      .navbar-collapse {
        margin-top: 10px;
        padding-top: 10px;
        border-top: 1px solid rgba(255,255,255,.08);
      }

      .nav-card-list {
        width: 100%;
        margin: 0;
        justify-content: flex-start;
      }

      .nav-card-link {
        width: 100%;
      }

      .nav-cta {
        margin-top: 10px;
        width: 100%;
        justify-content: center;
      }

      .hero {
        padding-top: 36px;
      }

      .hero-bento {
        grid-template-columns: 1fr;
      }

      .dashboard-card.large {
        grid-column: span 1;
      }

      .footer-grid {
        grid-template-columns: 1fr;
      }

      .footer-links {
        justify-content: flex-start;
      }
    }

    @media (max-width: 767px) {
      .site-shell,
      .nav-panel {
        width: min(100% - 24px, var(--container));
      }

      .section {
        padding: 58px 0;
      }

      .hero-stage,
      .live-panel,
      .content-panel,
      .feedback-panel,
      .footer-panel {
        padding: 18px;
        border-radius: 24px;
      }

      .hero-main-card,
      .dashboard-card,
      .matrix-card,
      .safety-card,
      .compare-card,
      .form-panel {
        border-radius: 22px;
        padding: 20px;
      }

      .hero-data-row,
      .kpi-stack,
      .matrix-small-grid {
        grid-template-columns: 1fr;
      }

      .update-row {
        grid-template-columns: 1fr;
        gap: 6px;
      }

      .update-state {
        justify-self: start;
      }

      .hero-actions .btn,
      .feedback-panel .btn {
        width: 100%;
      }

      .mobile-card {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 480px) {
      .brand-lockup {
        font-size: 16px;
      }

      .brand-mark {
        width: 38px;
        height: 38px;
        border-radius: 14px;
      }

      h1 {
        font-size: 32px;
      }

      .section-title,
      .feedback-copy h2 {
        font-size: 27px;
      }

      .article-card h3,
      .matrix-card h3,
      .compare-card h3 {
        font-size: 20px;
      }

      .hero-lead,
      .section-desc {
        font-size: 15px;
      }
    }

/* roulang page: article */
:root {
      --bg: #070a0f;
      --bg-soft: #0e131b;
      --bg-panel: #111823;
      --bg-panel-2: #151d29;
      --surface: #f6f7f9;
      --surface-card: #ffffff;
      --surface-soft: #eef2f6;
      --text: #f7f8fa;
      --text-dark: #111722;
      --muted: #b8c0cc;
      --muted-dark: #657184;
      --line: rgba(255,255,255,.1);
      --line-dark: rgba(12,18,28,.1);
      --primary: #ff3b4f;
      --primary-2: #ff6574;
      --cyan: #16d6c8;
      --cyan-2: #22c7e8;
      --amber: #ffd166;
      --green: #56e39f;
      --radius-xl: 32px;
      --radius-lg: 24px;
      --radius-md: 18px;
      --radius-sm: 14px;
      --shadow-deep: 0 28px 80px rgba(0,0,0,.38);
      --shadow-soft: 0 18px 45px rgba(8,14,24,.14);
      --shadow-glow: 0 0 0 1px rgba(255,255,255,.08), 0 20px 70px rgba(255,59,79,.16);
      --container: 1220px;
      --ease: 220ms ease;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      min-height: 100vh;
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 15% 8%, rgba(255,59,79,.18), transparent 31%),
        radial-gradient(circle at 84% 2%, rgba(22,214,200,.13), transparent 30%),
        linear-gradient(180deg, #070a0f 0%, #0b1018 44%, #f3f5f8 44%, #f3f5f8 100%);
      line-height: 1.78;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--ease), border-color var(--ease), background var(--ease), transform var(--ease), box-shadow var(--ease);
    }

    a:hover {
      color: var(--cyan);
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    button,
    input,
    textarea,
    select {
      font: inherit;
    }

    .site-shell {
      width: min(var(--container), calc(100% - 40px));
      margin: 0 auto;
    }

    .section {
      padding: 86px 0;
      position: relative;
    }

    .section.compact {
      padding: 64px 0;
    }

    .section-dark {
      color: var(--text);
    }

    .section-light {
      color: var(--text-dark);
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      color: var(--cyan);
      background: rgba(22,214,200,.08);
      border: 1px solid rgba(22,214,200,.18);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 0;
      margin-bottom: 14px;
    }

    .section-kicker::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 999px;
      background: var(--cyan);
      box-shadow: 0 0 16px rgba(22,214,200,.8);
    }

    .section-title {
      margin: 0;
      font-size: clamp(28px, 4vw, 44px);
      line-height: 1.18;
      letter-spacing: 0;
      font-weight: 800;
    }

    .section-desc {
      margin: 16px 0 0;
      max-width: 760px;
      color: var(--muted);
      font-size: 16px;
    }

    .section-light .section-desc {
      color: var(--muted-dark);
    }

    .btn {
      min-height: 46px;
      border-radius: 999px;
      padding: 11px 20px;
      font-weight: 800;
      letter-spacing: 0;
      border: 0;
      transition: transform var(--ease), box-shadow var(--ease), background var(--ease), color var(--ease), border-color var(--ease);
    }

    .btn:focus-visible,
    .nav-card-link:focus-visible,
    .article-link:focus-visible,
    .footer-link:focus-visible,
    .form-control:focus-visible,
    .form-select:focus-visible {
      outline: 3px solid rgba(22,214,200,.38);
      outline-offset: 3px;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--primary-2));
      color: #fff;
      box-shadow: 0 14px 34px rgba(255,59,79,.26);
    }

    .btn-primary:hover,
    .btn-primary:focus {
      background: linear-gradient(135deg, #ff263d, #ff5365);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 18px 42px rgba(255,59,79,.34);
    }

    .btn-primary:active {
      transform: translateY(0);
      box-shadow: 0 10px 24px rgba(255,59,79,.24);
    }

    .btn-outline-console {
      color: var(--text);
      border: 1px solid rgba(255,255,255,.14);
      background: rgba(255,255,255,.05);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.06);
    }

    .btn-outline-console:hover {
      color: #fff;
      border-color: rgba(22,214,200,.46);
      background: rgba(22,214,200,.1);
      transform: translateY(-2px);
    }

    .btn-light-console {
      color: var(--text-dark);
      background: #fff;
      border: 1px solid var(--line-dark);
      box-shadow: var(--shadow-soft);
    }

    .btn-light-console:hover {
      color: var(--text-dark);
      border-color: rgba(255,59,79,.28);
      transform: translateY(-2px);
      box-shadow: 0 18px 48px rgba(12,18,28,.16);
    }

    .text-arrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--cyan);
      font-weight: 800;
      font-size: 14px;
    }

    .text-arrow span {
      transition: transform var(--ease);
    }

    .text-arrow:hover span {
      transform: translateX(4px);
    }

    .badge-soft {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 7px 11px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 700;
      color: var(--muted);
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(255,255,255,.1);
    }

    .badge-soft::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--primary);
      box-shadow: 0 0 14px rgba(255,59,79,.75);
    }

    .badge-new::before {
      background: var(--cyan);
      box-shadow: 0 0 14px rgba(22,214,200,.75);
    }

    .badge-guide::before {
      background: var(--amber);
      box-shadow: 0 0 14px rgba(255,209,102,.75);
    }

    .badge-update::before {
      background: var(--green);
      box-shadow: 0 0 14px rgba(86,227,159,.75);
    }

    .site-header {
      position: sticky;
      top: 16px;
      z-index: 50;
      padding: 16px 0 0;
    }

    .nav-panel {
      width: min(var(--container), calc(100% - 40px));
      margin: 0 auto;
      padding: 10px;
      border-radius: 24px;
      background: rgba(14,19,27,.86);
      border: 1px solid rgba(255,255,255,.1);
      box-shadow: 0 18px 60px rgba(0,0,0,.28), inset 0 1px 0 rgba(255,255,255,.06);
      backdrop-filter: blur(18px);
    }

    .navbar {
      min-height: 62px;
      padding: 0;
      gap: 14px;
    }

    .brand-lockup {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 10px 12px;
      color: #fff;
      font-weight: 900;
      letter-spacing: 0;
    }

    .brand-lockup:hover {
      color: #fff;
    }

    .brand-mark {
      width: 34px;
      height: 34px;
      border-radius: 12px;
      position: relative;
      display: inline-block;
      background:
        linear-gradient(135deg, rgba(255,59,79,.95), rgba(255,101,116,.75)),
        radial-gradient(circle at 70% 30%, rgba(255,255,255,.32), transparent 32%);
      box-shadow: 0 12px 28px rgba(255,59,79,.28);
      flex: 0 0 auto;
    }

    .brand-mark::before {
      content: "";
      position: absolute;
      left: 13px;
      top: 10px;
      width: 0;
      height: 0;
      border-top: 7px solid transparent;
      border-bottom: 7px solid transparent;
      border-left: 10px solid #fff;
      filter: drop-shadow(0 2px 8px rgba(0,0,0,.24));
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      inset: 5px;
      border: 1px solid rgba(255,255,255,.28);
      border-radius: 9px;
    }

    .navbar-toggler {
      border: 1px solid rgba(255,255,255,.14);
      border-radius: 14px;
      padding: 9px 11px;
      background: rgba(255,255,255,.06);
      box-shadow: none;
    }

    .navbar-toggler:focus {
      box-shadow: 0 0 0 3px rgba(22,214,200,.22);
    }

    .navbar-toggler-icon {
      width: 1.25em;
      height: 1.25em;
      filter: invert(1) grayscale(1) brightness(2);
    }

    .nav-card-list {
      margin-left: 14px;
      gap: 8px;
      align-items: center;
    }

    .nav-card-link {
      min-height: 42px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 14px;
      border-radius: 16px;
      color: var(--muted);
      background: rgba(255,255,255,.04);
      border: 1px solid rgba(255,255,255,.08);
      font-weight: 800;
      font-size: 14px;
    }

    .nav-card-link:hover,
    .nav-card-link.active {
      color: #fff;
      background: rgba(255,255,255,.09);
      border-color: rgba(22,214,200,.28);
      transform: translateY(-1px);
    }

    .nav-dot {
      width: 8px;
      height: 8px;
      border-radius: 999px;
      background: var(--cyan);
      box-shadow: 0 0 14px rgba(22,214,200,.7);
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 42px;
      padding: 10px 18px;
      border-radius: 999px;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--primary-2));
      font-weight: 900;
      box-shadow: 0 12px 28px rgba(255,59,79,.24);
    }

    .nav-cta:hover {
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 16px 36px rgba(255,59,79,.34);
    }

    .article-hero {
      padding: 70px 0 58px;
      position: relative;
    }

    .article-hero::before {
      content: "";
      position: absolute;
      inset: -160px 0 auto 0;
      height: 410px;
      background:
        linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
      background-size: 28px 28px;
      mask-image: linear-gradient(180deg, rgba(0,0,0,.75), transparent);
      pointer-events: none;
    }

    .breadcrumb-pills {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px;
      margin: 0 0 22px;
      padding: 0;
      list-style: none;
    }

    .breadcrumb-pills li {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--muted);
      font-size: 13px;
      font-weight: 800;
    }

    .breadcrumb-pills li:not(:last-child)::after {
      content: "";
      width: 6px;
      height: 6px;
      border-top: 2px solid rgba(255,255,255,.34);
      border-right: 2px solid rgba(255,255,255,.34);
      transform: rotate(45deg);
    }

    .breadcrumb-pills a,
    .breadcrumb-pills span {
      display: inline-flex;
      align-items: center;
      min-height: 34px;
      padding: 7px 12px;
      border-radius: 999px;
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(255,255,255,.1);
    }

    .breadcrumb-pills a:hover {
      background: rgba(22,214,200,.1);
      border-color: rgba(22,214,200,.28);
    }

    .article-title-panel {
      position: relative;
      overflow: hidden;
      border-radius: var(--radius-xl);
      padding: clamp(26px, 4vw, 44px);
      background:
        linear-gradient(135deg, rgba(17,24,35,.96), rgba(12,17,25,.96)),
        radial-gradient(circle at 84% 12%, rgba(255,59,79,.25), transparent 36%);
      border: 1px solid rgba(255,255,255,.1);
      box-shadow: var(--shadow-deep);
    }

    .article-title-panel::before {
      content: "";
      position: absolute;
      right: -80px;
      top: -90px;
      width: 280px;
      height: 280px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(22,214,200,.16), transparent 68%);
      pointer-events: none;
    }

    .article-title-grid {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 280px;
      gap: 28px;
      align-items: stretch;
      position: relative;
      z-index: 1;
    }

    .article-title-panel h1 {
      margin: 0;
      max-width: 850px;
      font-size: clamp(28px, 4vw, 46px);
      line-height: 1.18;
      letter-spacing: 0;
      font-weight: 900;
      color: #fff;
      word-break: break-word;
    }

    .article-summary {
      margin: 18px 0 0;
      max-width: 860px;
      color: var(--muted);
      font-size: 16px;
      line-height: 1.86;
    }

    .meta-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 22px;
    }

    .poster-card {
      min-height: 250px;
      border-radius: 26px;
      padding: 18px;
      border: 1px solid rgba(255,255,255,.1);
      background:
        linear-gradient(160deg, rgba(255,59,79,.22), rgba(22,214,200,.1)),
        linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.03));
      position: relative;
      overflow: hidden;
    }

    .poster-card::before {
      content: "";
      position: absolute;
      inset: 20px;
      border-radius: 22px;
      border: 1px dashed rgba(255,255,255,.18);
    }

    .poster-card::after {
      content: "";
      position: absolute;
      left: 28px;
      right: 28px;
      bottom: 34px;
      height: 86px;
      border-radius: 18px;
      background:
        linear-gradient(90deg, rgba(255,255,255,.16), rgba(255,255,255,.03)),
        repeating-linear-gradient(90deg, rgba(255,255,255,.16) 0 10px, transparent 10px 20px);
      opacity: .9;
    }

    .poster-status {
      position: relative;
      z-index: 1;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 12px;
      border-radius: 999px;
      color: #fff;
      background: rgba(0,0,0,.28);
      border: 1px solid rgba(255,255,255,.13);
      font-size: 13px;
      font-weight: 800;
    }

    .poster-play {
      position: absolute;
      left: 50%;
      top: 48%;
      z-index: 2;
      width: 64px;
      height: 64px;
      transform: translate(-50%, -50%);
      border-radius: 50%;
      background: rgba(255,255,255,.92);
      box-shadow: 0 18px 40px rgba(0,0,0,.28);
    }

    .poster-play::before {
      content: "";
      position: absolute;
      left: 26px;
      top: 20px;
      width: 0;
      height: 0;
      border-top: 12px solid transparent;
      border-bottom: 12px solid transparent;
      border-left: 17px solid var(--primary);
    }

    .quick-strip {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 14px;
      margin-top: 20px;
    }

    .quick-card {
      padding: 16px;
      border-radius: var(--radius-md);
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(255,255,255,.1);
    }

    .quick-card strong {
      display: block;
      color: #fff;
      font-size: 20px;
      line-height: 1.2;
      font-weight: 900;
    }

    .quick-card span {
      display: block;
      margin-top: 5px;
      color: var(--muted);
      font-size: 13px;
    }

    .main-reading {
      padding: 72px 0 24px;
      color: var(--text-dark);
    }

    .reading-layout {
      display: grid;
      grid-template-columns: minmax(0, 820px) minmax(260px, 1fr);
      gap: 28px;
      align-items: start;
    }

    .article-body-card,
    .side-panel,
    .related-card,
    .feedback-panel {
      border-radius: var(--radius-lg);
      background: var(--surface-card);
      border: 1px solid var(--line-dark);
      box-shadow: var(--shadow-soft);
    }

    .article-body-card {
      padding: clamp(24px, 4vw, 42px);
      overflow: hidden;
    }

    .article-content {
      font-size: 17px;
      line-height: 1.9;
      color: #1c2430;
      word-break: break-word;
    }

    .article-content > *:first-child {
      margin-top: 0;
    }

    .article-content p {
      margin: 0 0 1.15em;
    }

    .article-content h2 {
      margin: 2.1em 0 .8em;
      padding-left: 16px;
      border-left: 5px solid var(--primary);
      color: #101722;
      font-size: clamp(23px, 3vw, 30px);
      line-height: 1.32;
      font-weight: 900;
      letter-spacing: 0;
    }

    .article-content h3 {
      margin: 1.8em 0 .65em;
      color: #151d29;
      font-size: clamp(20px, 2.5vw, 24px);
      line-height: 1.38;
      font-weight: 850;
    }

    .article-content a {
      color: #0d9289;
      border-bottom: 1px solid rgba(22,214,200,.35);
      font-weight: 800;
    }

    .article-content a:hover {
      color: var(--primary);
      border-color: rgba(255,59,79,.38);
    }

    .article-content img {
      margin: 28px auto;
      border-radius: 18px;
      box-shadow: 0 18px 46px rgba(12,18,28,.16);
    }

    .article-content blockquote {
      margin: 28px 0;
      padding: 22px 24px;
      border-radius: 20px;
      background: #f7f9fb;
      border-left: 5px solid var(--cyan);
      color: #243041;
      box-shadow: inset 0 0 0 1px rgba(12,18,28,.06);
    }

    .article-content ul,
    .article-content ol {
      margin: 1em 0 1.2em;
      padding-left: 1.35em;
    }

    .article-content li {
      margin: .45em 0;
    }

    .article-content table {
      width: 100%;
      min-width: 620px;
      border-collapse: collapse;
      overflow: hidden;
      border-radius: 16px;
      background: #fff;
    }

    .article-content table th,
    .article-content table td {
      padding: 14px 16px;
      border: 1px solid #e2e7ee;
      text-align: left;
    }

    .article-content table th {
      background: #f2f5f8;
      font-weight: 900;
    }

    .article-content table {
      display: block;
      overflow-x: auto;
    }

    .not-found-card {
      padding: 34px;
      border-radius: var(--radius-lg);
      background:
        linear-gradient(135deg, rgba(255,59,79,.08), rgba(22,214,200,.08)),
        #fff;
      border: 1px solid rgba(12,18,28,.08);
      text-align: center;
    }

    .not-found-card h2 {
      margin: 0 0 12px;
      font-size: 28px;
      font-weight: 900;
      color: var(--text-dark);
    }

    .not-found-card p {
      margin: 0 auto 22px;
      max-width: 520px;
      color: var(--muted-dark);
    }

    .side-stack {
      display: grid;
      gap: 18px;
      position: sticky;
      top: 112px;
    }

    .side-panel {
      padding: 22px;
    }

    .side-panel h2,
    .side-panel h3 {
      margin: 0;
      color: var(--text-dark);
      font-size: 18px;
      font-weight: 900;
    }

    .side-panel p {
      margin: 10px 0 0;
      color: var(--muted-dark);
      font-size: 14px;
    }

    .side-list {
      display: grid;
      gap: 10px;
      margin: 18px 0 0;
      padding: 0;
      list-style: none;
    }

    .side-list a,
    .side-list span {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 12px 13px;
      border-radius: 15px;
      background: #f5f7fa;
      color: #202a38;
      border: 1px solid rgba(12,18,28,.07);
      font-weight: 800;
      font-size: 14px;
    }

    .side-list a:hover {
      color: var(--primary);
      border-color: rgba(255,59,79,.18);
      background: #fff;
      transform: translateY(-2px);
      box-shadow: 0 12px 28px rgba(12,18,28,.08);
    }

    .side-list small {
      color: var(--muted-dark);
      font-weight: 700;
      white-space: nowrap;
    }

    .mini-meter {
      margin-top: 16px;
      display: grid;
      gap: 10px;
    }

    .meter-row {
      display: grid;
      grid-template-columns: 68px 1fr;
      gap: 10px;
      align-items: center;
      color: var(--muted-dark);
      font-size: 13px;
      font-weight: 800;
    }

    .meter-track {
      height: 8px;
      border-radius: 999px;
      overflow: hidden;
      background: #e7ecf2;
    }

    .meter-fill {
      height: 100%;
      border-radius: 999px;
      background: linear-gradient(90deg, var(--primary), var(--cyan));
    }

    .related-section {
      padding: 48px 0 80px;
      color: var(--text-dark);
    }

    .related-grid {
      display: grid;
      grid-template-columns: 1.2fr .8fr .8fr;
      gap: 18px;
      margin-top: 24px;
    }

    .related-card {
      min-height: 180px;
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }

    .related-card.featured {
      color: #fff;
      background:
        linear-gradient(135deg, rgba(17,24,35,.96), rgba(13,19,28,.96)),
        radial-gradient(circle at 86% 14%, rgba(255,59,79,.24), transparent 35%);
      border-color: rgba(255,255,255,.12);
    }

    .related-card:hover {
      transform: translateY(-4px);
      border-color: rgba(22,214,200,.34);
      box-shadow: 0 20px 54px rgba(12,18,28,.16);
    }

    .related-card h3 {
      margin: 12px 0 8px;
      font-size: 20px;
      line-height: 1.38;
      font-weight: 900;
    }

    .related-card p {
      margin: 0;
      color: var(--muted-dark);
      font-size: 14px;
    }

    .related-card.featured p {
      color: var(--muted);
    }

    .related-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      margin-top: 22px;
      color: var(--muted-dark);
      font-size: 13px;
      font-weight: 800;
    }

    .related-card.featured .related-meta {
      color: var(--muted);
    }

    .faq-section {
      padding: 78px 0;
      color: var(--text-dark);
      background: #eef2f6;
    }

    .accordion {
      display: grid;
      gap: 14px;
      margin-top: 26px;
    }

    .accordion-item {
      border: 1px solid var(--line-dark);
      border-radius: 20px;
      overflow: hidden;
      background: #fff;
      box-shadow: 0 12px 32px rgba(12,18,28,.08);
    }

    .accordion-button {
      padding: 19px 22px;
      color: var(--text-dark);
      background: #fff;
      font-weight: 900;
      line-height: 1.45;
      box-shadow: none;
    }

    .accordion-button:not(.collapsed) {
      color: var(--text-dark);
      background:
        linear-gradient(90deg, rgba(255,59,79,.08), rgba(22,214,200,.06)),
        #fff;
      box-shadow: inset 5px 0 0 var(--primary);
    }

    .accordion-button:focus {
      border-color: transparent;
      box-shadow: 0 0 0 3px rgba(22,214,200,.24);
    }

    .accordion-button::after {
      width: 18px;
      height: 18px;
      background-size: 18px;
      filter: grayscale(1);
    }

    .accordion-body {
      padding: 0 22px 22px;
      color: var(--muted-dark);
      line-height: 1.85;
    }

    .feedback-section {
      padding: 78px 0 94px;
      color: var(--text);
      background:
        radial-gradient(circle at 16% 16%, rgba(255,59,79,.13), transparent 28%),
        radial-gradient(circle at 86% 20%, rgba(22,214,200,.1), transparent 30%),
        #070a0f;
    }

    .feedback-panel {
      overflow: hidden;
      color: var(--text);
      background: linear-gradient(135deg, rgba(17,24,35,.96), rgba(10,15,22,.96));
      border-color: rgba(255,255,255,.1);
      box-shadow: var(--shadow-deep);
    }

    .feedback-grid {
      display: grid;
      grid-template-columns: .95fr 1.05fr;
      gap: 0;
    }

    .feedback-copy {
      padding: clamp(26px, 4vw, 42px);
      border-right: 1px solid rgba(255,255,255,.1);
    }

    .feedback-copy h2 {
      margin: 0;
      font-size: clamp(27px, 4vw, 42px);
      line-height: 1.2;
      font-weight: 900;
    }

    .feedback-copy p {
      margin: 16px 0 0;
      color: var(--muted);
    }

    .feedback-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 24px;
    }

    .feedback-form {
      padding: clamp(24px, 4vw, 38px);
    }

    .form-label {
      color: #f4f7fb;
      font-size: 14px;
      font-weight: 850;
      margin-bottom: 8px;
    }

    .form-control,
    .form-select {
      min-height: 48px;
      border-radius: 16px;
      color: #fff;
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(255,255,255,.12);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.05);
    }

    textarea.form-control {
      min-height: 126px;
      resize: vertical;
    }

    .form-control::placeholder {
      color: rgba(184,192,204,.68);
    }

    .form-control:focus,
    .form-select:focus {
      color: #fff;
      background: rgba(255,255,255,.08);
      border-color: rgba(22,214,200,.65);
      box-shadow: 0 0 0 4px rgba(22,214,200,.12);
    }

    .form-select option {
      color: #111722;
    }

    .site-footer {
      padding: 0 0 34px;
      color: var(--text);
      background: #070a0f;
    }

    .footer-panel {
      padding: 32px;
      border-radius: var(--radius-lg);
      background: rgba(14,19,27,.92);
      border: 1px solid rgba(255,255,255,.1);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.05);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 26px;
      align-items: start;
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: #fff;
      font-size: 18px;
      font-weight: 900;
    }

    .footer-panel p {
      margin: 14px 0 0;
      max-width: 680px;
      color: var(--muted);
      font-size: 14px;
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: flex-end;
    }

    .footer-link {
      min-height: 38px;
      display: inline-flex;
      align-items: center;
      padding: 8px 12px;
      border-radius: 999px;
      color: var(--muted);
      background: rgba(255,255,255,.05);
      border: 1px solid rgba(255,255,255,.08);
      font-size: 13px;
      font-weight: 800;
    }

    .footer-link:hover {
      color: #fff;
      background: rgba(22,214,200,.1);
      border-color: rgba(22,214,200,.28);
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      margin-top: 26px;
      padding-top: 20px;
      border-top: 1px solid rgba(255,255,255,.08);
      color: rgba(184,192,204,.82);
      font-size: 13px;
    }

    @media (max-width: 1199px) {
      .article-title-grid,
      .reading-layout {
        grid-template-columns: 1fr;
      }

      .poster-card {
        min-height: 220px;
      }

      .side-stack {
        position: static;
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
    }

    @media (max-width: 991px) {
      .site-header {
        top: 10px;
        padding-top: 10px;
      }

      .nav-panel {
        width: min(var(--container), calc(100% - 24px));
      }

      .navbar-collapse {
        padding-top: 12px;
      }

      .nav-card-list {
        margin-left: 0;
        align-items: stretch;
      }

      .nav-card-link,
      .nav-cta {
        width: 100%;
        justify-content: center;
      }

      .quick-strip,
      .related-grid,
      .feedback-grid,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .feedback-copy {
        border-right: 0;
        border-bottom: 1px solid rgba(255,255,255,.1);
      }

      .footer-links {
        justify-content: flex-start;
      }
    }

    @media (max-width: 767px) {
      body {
        background:
          radial-gradient(circle at 12% 5%, rgba(255,59,79,.16), transparent 30%),
          linear-gradient(180deg, #070a0f 0%, #0b1018 38%, #f3f5f8 38%, #f3f5f8 100%);
      }

      .site-shell {
        width: min(100% - 24px, var(--container));
      }

      .section,
      .main-reading,
      .faq-section,
      .feedback-section {
        padding-top: 54px;
        padding-bottom: 54px;
      }

      .article-hero {
        padding-top: 44px;
        padding-bottom: 38px;
      }

      .article-title-panel {
        border-radius: 24px;
      }

      .quick-strip,
      .side-stack {
        grid-template-columns: 1fr;
      }

      .article-body-card,
      .side-panel,
      .related-card,
      .footer-panel {
        border-radius: 22px;
      }

      .article-content {
        font-size: 16px;
      }

      .meta-row,
      .feedback-tags,
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }

    @media (max-width: 520px) {
      .nav-panel {
        padding: 8px;
        border-radius: 20px;
      }

      .brand-lockup {
        padding: 8px 6px;
        font-size: 15px;
      }

      .brand-mark {
        width: 30px;
        height: 30px;
        border-radius: 10px;
      }

      .article-title-panel,
      .article-body-card,
      .feedback-copy,
      .feedback-form,
      .footer-panel {
        padding: 22px;
      }

      .breadcrumb-pills a,
      .breadcrumb-pills span {
        min-height: 32px;
        padding: 6px 10px;
      }

      .btn {
        width: 100%;
        justify-content: center;
      }

      .poster-card {
        min-height: 190px;
      }

      .poster-play {
        width: 56px;
        height: 56px;
      }

      .poster-play::before {
        left: 23px;
        top: 17px;
      }
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}