/* roulang page: index */
:root {
      --bg: #07111f;
      --bg-2: #0b1628;
      --panel: rgba(15, 23, 42, 0.62);
      --panel-strong: rgba(20, 31, 52, 0.78);
      --panel-soft: rgba(11, 22, 40, 0.54);
      --text: #f5f7fb;
      --muted: #a8b3c7;
      --weak: #6f7d95;
      --blue: #38bdf8;
      --blue-2: #2f80ed;
      --violet: #6366f1;
      --purple: #7c3aed;
      --amber: #f6b64a;
      --amber-2: #ffd08a;
      --danger: #fb7185;
      --border: rgba(148, 163, 184, 0.18);
      --border-strong: rgba(56, 189, 248, 0.35);
      --shadow: 0 28px 80px rgba(0, 0, 0, 0.35);
      --shadow-soft: 0 18px 48px rgba(0, 0, 0, 0.28);
      --glow: 0 0 30px rgba(56, 189, 248, 0.24);
      --amber-glow: 0 0 34px rgba(246, 182, 74, 0.22);
      --radius-xl: 32px;
      --radius-lg: 24px;
      --radius-md: 18px;
      --radius-sm: 14px;
      --container: 1220px;
      --ease: 220ms ease;
      --nav-h: 78px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      min-height: 100vh;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
      line-height: 1.75;
      color: var(--text);
      background:
        radial-gradient(circle at 12% 8%, rgba(56, 189, 248, 0.18), transparent 31%),
        radial-gradient(circle at 86% 15%, rgba(124, 58, 237, 0.18), transparent 34%),
        radial-gradient(circle at 70% 70%, rgba(246, 182, 74, 0.10), transparent 34%),
        linear-gradient(180deg, var(--bg), #091426 48%, #050b14 100%);
      overflow-x: hidden;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      opacity: 0.08;
      background-image:
        linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
      background-size: 56px 56px;
      mask-image: linear-gradient(to bottom, black, transparent 72%);
      z-index: -2;
    }

    body::after {
      content: "";
      position: fixed;
      inset: auto -10% 0 -10%;
      height: 240px;
      background: radial-gradient(ellipse at center, rgba(56,189,248,.13), transparent 68%);
      filter: blur(18px);
      pointer-events: none;
      z-index: -1;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

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

    button,
    input {
      font: inherit;
    }

    button {
      cursor: pointer;
      border: 0;
      background: none;
      color: inherit;
    }

    input {
      width: 100%;
      border: 0;
      outline: 0;
      color: var(--text);
    }

    ::selection {
      background: rgba(56, 189, 248, 0.32);
      color: #fff;
    }

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

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      height: var(--nav-h);
      display: flex;
      align-items: center;
      border-bottom: 1px solid rgba(148, 163, 184, 0.15);
      background: rgba(7, 17, 31, 0.76);
      backdrop-filter: blur(18px) saturate(140%);
      transition: box-shadow var(--ease), background var(--ease);
    }

    .site-header.is-scrolled {
      background: rgba(7, 17, 31, 0.9);
      box-shadow: 0 16px 44px rgba(0, 0, 0, 0.28);
    }

    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      height: 100%;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
      font-weight: 800;
      letter-spacing: -0.02em;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      flex: 0 0 42px;
      border-radius: 50%;
      position: relative;
      background:
        radial-gradient(circle at 68% 30%, rgba(255, 208, 138, 0.95), transparent 18%),
        linear-gradient(135deg, rgba(56, 189, 248, 0.95), rgba(99, 102, 241, 0.82) 58%, rgba(246, 182, 74, 0.82));
      box-shadow: var(--glow), inset 0 0 0 1px rgba(255,255,255,.22);
    }

    .brand-mark::before {
      content: "";
      position: absolute;
      left: 16px;
      top: 12px;
      width: 0;
      height: 0;
      border-left: 12px solid #fff;
      border-top: 8px solid transparent;
      border-bottom: 8px solid transparent;
      filter: drop-shadow(0 0 12px rgba(255,255,255,.55));
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      inset: 6px;
      border-radius: 50%;
      border: 1px dashed rgba(255,255,255,.36);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.15;
    }

    .brand-title {
      font-size: 16px;
      white-space: nowrap;
    }

    .brand-sub {
      font-size: 12px;
      color: var(--muted);
      font-weight: 500;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      margin-left: auto;
    }

    .nav-link {
      position: relative;
      min-height: 44px;
      display: inline-flex;
      align-items: center;
      padding: 0 16px;
      border-radius: 999px;
      color: var(--muted);
      font-size: 15px;
      font-weight: 650;
      transition: color var(--ease), background var(--ease), transform var(--ease);
    }

    .nav-link::after {
      content: "";
      position: absolute;
      left: 18px;
      right: 18px;
      bottom: 7px;
      height: 2px;
      border-radius: 99px;
      background: linear-gradient(90deg, var(--blue), var(--amber));
      opacity: 0;
      transform: scaleX(.35);
      transition: opacity var(--ease), transform var(--ease);
    }

    .nav-link:hover,
    .nav-link:focus-visible,
    .nav-link.active {
      color: var(--text);
      background: rgba(148, 163, 184, 0.10);
    }

    .nav-link:hover::after,
    .nav-link.active::after {
      opacity: 1;
      transform: scaleX(1);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .menu-toggle {
      display: none;
      width: 46px;
      height: 46px;
      border-radius: 15px;
      border: 1px solid var(--border);
      background: rgba(15, 23, 42, 0.62);
      transition: border-color var(--ease), background var(--ease);
    }

    .menu-toggle span {
      display: block;
      width: 20px;
      height: 2px;
      margin: 5px auto;
      border-radius: 9px;
      background: var(--text);
      transition: transform var(--ease), opacity var(--ease);
    }

    .menu-toggle[aria-expanded="true"] span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }

    .menu-toggle[aria-expanded="true"] span:nth-child(2) {
      opacity: 0;
    }

    .menu-toggle[aria-expanded="true"] span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

    .btn {
      min-height: 48px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      padding: 0 22px;
      border-radius: 999px;
      font-weight: 750;
      font-size: 15px;
      letter-spacing: .01em;
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease), background var(--ease), opacity var(--ease);
      user-select: none;
      white-space: nowrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--blue-2), var(--violet) 56%, var(--purple));
      color: #fff;
      box-shadow: 0 0 0 1px rgba(255,255,255,.12) inset, 0 14px 32px rgba(47,128,237,.26), 0 0 28px rgba(246,182,74,.14);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 0 1px rgba(255,255,255,.18) inset, 0 20px 46px rgba(47,128,237,.35), 0 0 38px rgba(246,182,74,.22);
    }

    .btn-secondary {
      border: 1px solid var(--border);
      background: rgba(15, 23, 42, 0.54);
      color: var(--text);
      backdrop-filter: blur(12px);
    }

    .btn-secondary:hover {
      border-color: var(--border-strong);
      background: rgba(56, 189, 248, 0.10);
      transform: translateY(-2px);
      box-shadow: var(--glow);
    }

    .btn:active {
      transform: translateY(0) scale(.98);
    }

    .btn:focus-visible,
    .nav-link:focus-visible,
    .menu-toggle:focus-visible,
    .faq-question:focus-visible,
    .form-button:focus-visible,
    input:focus-visible {
      outline: 3px solid rgba(56,189,248,.35);
      outline-offset: 3px;
    }

    .btn[disabled],
    .form-button[disabled] {
      cursor: not-allowed;
      opacity: .55;
      transform: none;
      box-shadow: none;
    }

    .hero {
      position: relative;
      padding: 96px 0 74px;
      overflow: hidden;
    }

    .hero::before {
      content: "";
      position: absolute;
      right: -120px;
      top: 44px;
      width: 520px;
      height: 520px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(246,182,74,.15), rgba(56,189,248,.12) 36%, transparent 70%);
      filter: blur(10px);
      pointer-events: none;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.03fr) minmax(360px, .86fr);
      gap: 54px;
      align-items: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      width: fit-content;
      min-height: 34px;
      padding: 0 13px;
      border-radius: 999px;
      border: 1px solid rgba(246, 182, 74, 0.34);
      color: var(--amber-2);
      background: rgba(246, 182, 74, 0.08);
      box-shadow: var(--amber-glow);
      font-size: 13px;
      font-weight: 750;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--amber);
      box-shadow: 0 0 18px rgba(246,182,74,.75);
    }

    h1 {
      margin-top: 22px;
      max-width: 780px;
      font-size: clamp(34px, 5vw, 58px);
      line-height: 1.14;
      letter-spacing: -0.045em;
      font-weight: 820;
    }

    .hero-highlight {
      color: transparent;
      background: linear-gradient(90deg, #fff, #dff7ff 45%, var(--amber-2));
      -webkit-background-clip: text;
      background-clip: text;
    }

    .hero-subtitle {
      margin-top: 22px;
      max-width: 640px;
      color: var(--muted);
      font-size: 18px;
      line-height: 1.8;
    }

    .hero-cta {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 34px;
    }

    .capsules {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 28px;
    }

    .capsule,
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      min-height: 34px;
      padding: 0 12px;
      border-radius: 999px;
      border: 1px solid var(--border);
      background: rgba(15, 23, 42, 0.48);
      color: var(--muted);
      font-size: 13px;
      font-weight: 650;
    }

    .capsule strong {
      color: var(--text);
      font-weight: 750;
    }

    .visual-panel {
      position: relative;
      border-radius: var(--radius-xl);
      padding: 22px;
      background: linear-gradient(145deg, rgba(15,23,42,.82), rgba(15,23,42,.46));
      border: 1px solid rgba(148, 163, 184, 0.22);
      box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,.08);
      backdrop-filter: blur(18px) saturate(140%);
      overflow: hidden;
    }

    .visual-panel::before {
      content: "";
      position: absolute;
      inset: -1px;
      background:
        radial-gradient(circle at 28% 12%, rgba(56,189,248,.22), transparent 35%),
        radial-gradient(circle at 84% 30%, rgba(246,182,74,.20), transparent 30%);
      pointer-events: none;
    }

    .poster-abstract {
      position: relative;
      min-height: 430px;
      border-radius: 26px;
      overflow: hidden;
      background:
        linear-gradient(180deg, rgba(255,255,255,.07), transparent 42%),
        radial-gradient(circle at 34% 16%, rgba(255,208,138,.34), transparent 26%),
        radial-gradient(circle at 76% 42%, rgba(56,189,248,.28), transparent 32%),
        linear-gradient(135deg, #0b1930, #10182d 46%, #1c1830);
      border: 1px solid rgba(255,255,255,.10);
    }

    .film-strip {
      position: absolute;
      left: 22px;
      top: 22px;
      bottom: 22px;
      width: 34px;
      border-radius: 999px;
      background: rgba(2, 6, 23, 0.38);
      border: 1px solid rgba(255,255,255,.08);
    }

    .film-strip::before {
      content: "";
      position: absolute;
      inset: 14px 10px;
      background: repeating-linear-gradient(to bottom, rgba(255,255,255,.34) 0 8px, transparent 8px 20px);
      border-radius: 20px;
      opacity: .75;
    }

    .dash-card {
      position: absolute;
      left: 74px;
      right: 24px;
      top: 34px;
      padding: 18px;
      border-radius: 20px;
      background: rgba(7, 17, 31, 0.62);
      border: 1px solid rgba(148, 163, 184, .18);
      backdrop-filter: blur(14px);
    }

    .dash-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 14px;
    }

    .dash-title {
      font-weight: 800;
      font-size: 17px;
    }

    .dash-pill {
      color: var(--amber-2);
      border-color: rgba(246,182,74,.34);
      background: rgba(246,182,74,.08);
    }

    .episode-lines {
      display: grid;
      gap: 11px;
    }

    .episode-line {
      display: grid;
      grid-template-columns: 58px 1fr 44px;
      gap: 12px;
      align-items: center;
      color: var(--muted);
      font-size: 13px;
    }

    .bar {
      height: 8px;
      overflow: hidden;
      border-radius: 99px;
      background: rgba(148, 163, 184, 0.14);
    }

    .bar span {
      display: block;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--blue), var(--violet), var(--amber));
      box-shadow: 0 0 18px rgba(56,189,248,.28);
    }

    .timeline-mini {
      position: absolute;
      left: 74px;
      right: 24px;
      bottom: 28px;
      display: grid;
      gap: 12px;
    }

    .node-line {
      position: relative;
      display: grid;
      grid-template-columns: 20px 1fr;
      gap: 12px;
      align-items: start;
      padding: 12px;
      border-radius: 16px;
      background: rgba(15, 23, 42, 0.52);
      border: 1px solid rgba(148, 163, 184, .14);
    }

    .node {
      width: 12px;
      height: 12px;
      margin-top: 7px;
      border-radius: 50%;
      background: var(--blue);
      box-shadow: 0 0 16px rgba(56,189,248,.65);
    }

    .node-line:nth-child(2) .node {
      background: var(--amber);
      box-shadow: 0 0 16px rgba(246,182,74,.62);
    }

    .node-line b {
      display: block;
      font-size: 14px;
      line-height: 1.4;
    }

    .node-line span {
      display: block;
      margin-top: 3px;
      color: var(--muted);
      font-size: 12px;
      line-height: 1.55;
    }

    main {
      position: relative;
      z-index: 1;
    }

    .section {
      padding: 92px 0;
    }

    .section-head {
      display: flex;
      justify-content: space-between;
      gap: 28px;
      align-items: end;
      margin-bottom: 34px;
    }

    .section-kicker {
      color: var(--blue);
      font-size: 14px;
      font-weight: 800;
      margin-bottom: 9px;
    }

    h2 {
      font-size: clamp(27px, 3.2vw, 38px);
      line-height: 1.22;
      letter-spacing: -0.03em;
      font-weight: 800;
    }

    .section-desc {
      max-width: 520px;
      color: var(--muted);
      font-size: 16px;
    }

    .content-map {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 18px;
    }

    .map-card,
    .metric-card,
    .topic-card,
    .step-card,
    .faq-item,
    .cta-box,
    .quote-card {
      border: 1px solid var(--border);
      background: var(--panel);
      backdrop-filter: blur(16px) saturate(130%);
      box-shadow: var(--shadow-soft), inset 0 1px 0 rgba(255,255,255,.06);
    }

    .map-card {
      min-height: 210px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      gap: 24px;
      border-radius: var(--radius-lg);
      padding: 24px;
      position: relative;
      overflow: hidden;
      transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
    }

    .map-card:nth-child(1) {
      grid-column: span 2;
      min-height: 260px;
      background:
        radial-gradient(circle at 78% 8%, rgba(246,182,74,.18), transparent 31%),
        linear-gradient(145deg, rgba(15,23,42,.72), rgba(30,41,59,.44));
    }

    .map-card:nth-child(4) {
      grid-row: span 2;
    }

    .map-card::after {
      content: "→";
      position: absolute;
      right: 22px;
      bottom: 18px;
      color: var(--blue);
      font-size: 24px;
      transition: transform var(--ease), color var(--ease);
    }

    .map-card:hover {
      transform: translateY(-4px);
      border-color: var(--border-strong);
      box-shadow: var(--shadow), var(--glow);
    }

    .map-card:hover::after {
      transform: translateX(4px);
      color: var(--amber-2);
    }

    .map-tag {
      width: fit-content;
      border-radius: 999px;
      padding: 5px 10px;
      color: var(--amber-2);
      background: rgba(246, 182, 74, 0.08);
      border: 1px solid rgba(246, 182, 74, 0.28);
      font-size: 12px;
      font-weight: 760;
    }

    h3 {
      font-size: 21px;
      line-height: 1.35;
      font-weight: 780;
    }

    .map-card p,
    .metric-card p,
    .topic-card p,
    .step-card p,
    .quote-card p {
      color: var(--muted);
      font-size: 15px;
    }

    .metrics {
      border-radius: var(--radius-xl);
      padding: 30px;
      background:
        radial-gradient(circle at 12% 20%, rgba(56,189,248,.14), transparent 30%),
        radial-gradient(circle at 78% 18%, rgba(124,58,237,.14), transparent 32%),
        rgba(7, 17, 31, 0.72);
      border: 1px solid var(--border);
      box-shadow: var(--shadow);
    }

    .metric-grid {
      display: grid;
      grid-template-columns: 1.05fr repeat(3, 1fr);
      gap: 16px;
      align-items: stretch;
    }

    .metric-card {
      border-radius: var(--radius-lg);
      padding: 24px;
      min-height: 172px;
      position: relative;
      overflow: hidden;
    }

    .metric-card.featured {
      background:
        linear-gradient(135deg, rgba(56,189,248,.14), rgba(99,102,241,.12)),
        rgba(15,23,42,.62);
    }

    .metric-label {
      color: var(--weak);
      font-size: 13px;
      font-weight: 700;
    }

    .metric-value {
      margin: 12px 0 8px;
      font-size: 36px;
      line-height: 1;
      font-weight: 860;
      color: #ecfeff;
      text-shadow: 0 0 18px rgba(56,189,248,.22);
    }

    .metric-progress {
      position: absolute;
      left: 24px;
      right: 24px;
      bottom: 22px;
      height: 7px;
      border-radius: 99px;
      background: rgba(148,163,184,.13);
      overflow: hidden;
    }

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

    .topic-layout {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 24px;
      align-items: stretch;
    }

    .topic-card {
      border-radius: var(--radius-xl);
      padding: 30px;
      overflow: hidden;
      position: relative;
      background:
        radial-gradient(circle at 85% 12%, rgba(246,182,74,.18), transparent 32%),
        rgba(15,23,42,.60);
    }

    .topic-card::before {
      content: "";
      position: absolute;
      right: -58px;
      bottom: -68px;
      width: 220px;
      height: 220px;
      border-radius: 50%;
      border: 1px dashed rgba(255,255,255,.16);
    }

    .topic-cover {
      height: 180px;
      margin: 24px 0;
      border-radius: 24px;
      background:
        linear-gradient(90deg, rgba(255,255,255,.08) 0 10%, transparent 10% 14%, rgba(255,255,255,.06) 14% 24%, transparent 24%),
        radial-gradient(circle at 24% 24%, rgba(246,182,74,.28), transparent 28%),
        linear-gradient(135deg, #10243e, #131a30);
      border: 1px solid rgba(255,255,255,.10);
      position: relative;
      overflow: hidden;
    }

    .topic-cover::after {
      content: "";
      position: absolute;
      inset: 30px;
      border-radius: 999px;
      border: 1px solid rgba(56,189,248,.28);
      box-shadow: inset 0 0 40px rgba(56,189,248,.08);
    }

    .timeline {
      display: grid;
      gap: 16px;
      padding: 8px 0 8px 22px;
      position: relative;
    }

    .timeline::before {
      content: "";
      position: absolute;
      left: 7px;
      top: 18px;
      bottom: 18px;
      width: 2px;
      border-radius: 9px;
      background: linear-gradient(var(--blue), var(--violet), var(--amber));
      opacity: .72;
    }

    .timeline-item {
      position: relative;
      padding: 22px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      background: rgba(15, 23, 42, 0.56);
      transition: transform var(--ease), border-color var(--ease), background var(--ease);
    }

    .timeline-item::before {
      content: "";
      position: absolute;
      left: -22px;
      top: 28px;
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: var(--blue);
      box-shadow: 0 0 18px rgba(56,189,248,.7);
    }

    .timeline-item:hover {
      transform: translateX(4px);
      border-color: var(--border-strong);
      background: rgba(15,23,42,.72);
    }

    .timeline-item span {
      color: var(--amber-2);
      font-size: 13px;
      font-weight: 780;
    }

    .timeline-item h3 {
      margin: 6px 0 6px;
      font-size: 19px;
    }

    .timeline-item p {
      color: var(--muted);
      font-size: 15px;
    }

    .steps {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
      counter-reset: step;
    }

    .step-card {
      position: relative;
      min-height: 210px;
      padding: 25px;
      border-radius: var(--radius-lg);
      overflow: hidden;
      counter-increment: step;
      transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
    }

    .step-card::before {
      content: counter(step, decimal-leading-zero);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 48px;
      height: 48px;
      margin-bottom: 22px;
      border-radius: 16px;
      color: #fff;
      font-weight: 850;
      background: linear-gradient(135deg, var(--blue-2), var(--violet));
      box-shadow: var(--glow);
    }

    .step-card::after {
      content: "";
      position: absolute;
      top: 48px;
      right: -20px;
      width: 90px;
      height: 2px;
      background: linear-gradient(90deg, rgba(56,189,248,.65), transparent);
    }

    .step-card:hover {
      transform: translateY(-3px);
      border-color: rgba(246,182,74,.34);
      box-shadow: var(--amber-glow);
    }

    .step-card h3 {
      margin-bottom: 8px;
    }

    .quote-card {
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      gap: 18px;
      border-radius: var(--radius-xl);
      padding: 24px;
      background:
        radial-gradient(circle at 12% 12%, rgba(56,189,248,.13), transparent 34%),
        rgba(15, 23, 42, 0.56);
    }

    .quote-item {
      padding: 22px;
      border-radius: 22px;
      border: 1px solid rgba(148,163,184,.14);
      background: rgba(7,17,31,.42);
    }

    .quote-item b {
      display: block;
      margin-bottom: 10px;
      font-size: 18px;
    }

    .faq-wrap {
      display: grid;
      grid-template-columns: .75fr 1.25fr;
      gap: 28px;
      align-items: start;
    }

    .faq-intro {
      position: sticky;
      top: calc(var(--nav-h) + 24px);
      padding: 30px;
      border-radius: var(--radius-xl);
      background:
        radial-gradient(circle at 20% 20%, rgba(246,182,74,.14), transparent 34%),
        var(--panel);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-soft);
      backdrop-filter: blur(16px);
    }

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

    .faq-item {
      border-radius: 22px;
      overflow: hidden;
      transition: border-color var(--ease), box-shadow var(--ease);
    }

    .faq-item.is-open {
      border-color: rgba(56,189,248,.38);
      box-shadow: var(--glow);
    }

    .faq-question {
      width: 100%;
      min-height: 60px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      padding: 18px 22px;
      color: var(--text);
      font-size: 16px;
      font-weight: 760;
      text-align: left;
    }

    .faq-icon {
      width: 28px;
      height: 28px;
      flex: 0 0 28px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--border);
      color: var(--blue);
      transition: transform var(--ease), background var(--ease);
    }

    .faq-item.is-open .faq-icon {
      transform: rotate(45deg);
      background: rgba(56,189,248,.12);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 260ms ease;
    }

    .faq-answer p {
      padding: 0 22px 20px;
      color: var(--muted);
      font-size: 15px;
    }

    .cta-box {
      position: relative;
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 28px;
      align-items: center;
      border-radius: 34px;
      padding: 34px;
      overflow: hidden;
      background:
        radial-gradient(circle at 15% 25%, rgba(56,189,248,.18), transparent 34%),
        radial-gradient(circle at 80% 35%, rgba(246,182,74,.16), transparent 30%),
        rgba(15,23,42,.67);
    }

    .cta-box::before {
      content: "";
      position: absolute;
      inset: 0;
      border-top: 1px solid rgba(255,255,255,.12);
      pointer-events: none;
    }

    .cta-box p {
      margin-top: 12px;
      color: var(--muted);
      max-width: 650px;
    }

    .search-form {
      position: relative;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 12px;
      padding: 10px;
      border-radius: 22px;
      border: 1px solid var(--border);
      background: rgba(7, 17, 31, 0.54);
    }

    .search-input {
      min-height: 50px;
      padding: 0 16px;
      border-radius: 16px;
      border: 1px solid rgba(148,163,184,.16);
      background: rgba(15, 23, 42, 0.72);
      transition: border-color var(--ease), box-shadow var(--ease), background var(--ease);
    }

    .search-input::placeholder {
      color: rgba(168,179,199,.62);
    }

    .search-input:focus {
      border-color: rgba(56,189,248,.48);
      box-shadow: 0 0 0 4px rgba(56,189,248,.12);
      background: rgba(15,23,42,.88);
    }

    .search-input.is-error {
      border-color: rgba(251,113,133,.65);
      box-shadow: 0 0 0 4px rgba(251,113,133,.10);
    }

    .form-button {
      min-height: 50px;
      padding: 0 20px;
      border-radius: 16px;
      color: #fff;
      font-weight: 780;
      background: linear-gradient(135deg, var(--amber), var(--violet));
      box-shadow: 0 12px 26px rgba(246,182,74,.16);
      transition: transform var(--ease), box-shadow var(--ease), opacity var(--ease);
    }

    .form-button:hover {
      transform: translateY(-2px);
      box-shadow: 0 18px 34px rgba(246,182,74,.24);
    }

    .form-note {
      margin-top: 10px;
      color: var(--weak);
      font-size: 13px;
    }

    .site-footer {
      padding: 54px 0 26px;
      border-top: 1px solid rgba(148, 163, 184, 0.14);
      background:
        radial-gradient(circle at 12% 0%, rgba(56,189,248,.10), transparent 30%),
        rgba(5, 11, 20, 0.86);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr .8fr .8fr;
      gap: 28px;
      margin-bottom: 34px;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
      font-weight: 820;
    }

    .footer-brand .brand-mark {
      width: 38px;
      height: 38px;
      flex-basis: 38px;
    }

    .footer-desc {
      max-width: 520px;
      color: var(--muted);
      font-size: 15px;
    }

    .footer-title {
      margin-bottom: 14px;
      color: var(--text);
      font-weight: 780;
    }

    .footer-links {
      display: grid;
      gap: 10px;
    }

    .footer-links a {
      color: var(--muted);
      font-size: 14px;
      transition: color var(--ease), transform var(--ease);
    }

    .footer-links a:hover {
      color: var(--blue);
      transform: translateX(3px);
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      padding-top: 22px;
      border-top: 1px solid rgba(148,163,184,.12);
      color: var(--weak);
      font-size: 13px;
    }

    @media (max-width: 1080px) {
      .hero-grid,
      .topic-layout,
      .cta-box,
      .faq-wrap {
        grid-template-columns: 1fr;
      }

      .visual-panel {
        max-width: 680px;
      }

      .content-map,
      .steps {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .metric-grid,
      .quote-card {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .faq-intro {
        position: static;
      }
    }

    @media (max-width: 880px) {
      :root {
        --nav-h: 72px;
      }

      .menu-toggle {
        display: inline-block;
      }

      .nav-menu {
        position: fixed;
        left: 20px;
        right: 20px;
        top: calc(var(--nav-h) + 12px);
        display: grid;
        gap: 8px;
        padding: 16px;
        border-radius: 24px;
        background: rgba(7,17,31,.94);
        border: 1px solid var(--border);
        box-shadow: var(--shadow);
        backdrop-filter: blur(18px);
        transform: translateY(-12px);
        opacity: 0;
        pointer-events: none;
        transition: opacity var(--ease), transform var(--ease);
      }

      .nav-menu.is-open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
      }

      .nav-link {
        justify-content: center;
        border-radius: 16px;
      }

      .nav-actions .btn {
        display: none;
      }

      .hero {
        padding-top: 72px;
      }

      .section {
        padding: 68px 0;
      }

      .section-head {
        display: block;
      }

      .section-desc {
        margin-top: 12px;
      }

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

      .footer-bottom {
        flex-direction: column;
      }
    }

    @media (max-width: 640px) {
      .container {
        width: min(100% - 28px, var(--container));
      }

      .brand-title {
        font-size: 14px;
        max-width: 148px;
        overflow: hidden;
        text-overflow: ellipsis;
      }

      .brand-sub {
        display: none;
      }

      h1 {
        font-size: 34px;
      }

      .hero-subtitle {
        font-size: 16px;
      }

      .hero-cta,
      .search-form {
        grid-template-columns: 1fr;
        display: grid;
      }

      .btn,
      .form-button {
        width: 100%;
      }

      .content-map,
      .steps,
      .metric-grid,
      .quote-card {
        grid-template-columns: 1fr;
      }

      .map-card:nth-child(1),
      .map-card:nth-child(4) {
        grid-column: auto;
        grid-row: auto;
      }

      .visual-panel {
        padding: 14px;
        border-radius: 24px;
      }

      .poster-abstract {
        min-height: 360px;
      }

      .dash-card,
      .timeline-mini {
        left: 62px;
        right: 14px;
      }

      .episode-line {
        grid-template-columns: 44px 1fr 34px;
        gap: 8px;
      }

      .cta-box {
        padding: 24px;
        border-radius: 26px;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      *,
      *::before,
      *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
      }
    }

/* roulang page: category1 */
:root {
      --bg: #07111f;
      --bg-2: #0b1628;
      --panel: rgba(15, 23, 42, 0.66);
      --panel-strong: rgba(17, 28, 48, 0.82);
      --text: #f5f7fb;
      --muted: #a8b3c7;
      --weak: #728199;
      --line: rgba(148, 163, 184, 0.18);
      --line-strong: rgba(56, 189, 248, 0.36);
      --blue: #38bdf8;
      --blue-2: #2f80ed;
      --violet: #6366f1;
      --purple: #7c3aed;
      --amber: #f6b64a;
      --amber-soft: #ffd08a;
      --danger: #fb927d;
      --radius-sm: 14px;
      --radius-md: 20px;
      --radius-lg: 28px;
      --radius-xl: 34px;
      --container: 1220px;
      --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
      --shadow-soft: 0 16px 48px rgba(2, 8, 23, 0.32);
      --glow: 0 0 34px rgba(56, 189, 248, 0.22);
      --transition: 220ms ease;
      --font: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
      -webkit-text-size-adjust: 100%;
    }

    body {
      min-height: 100vh;
      font-family: var(--font);
      color: var(--text);
      line-height: 1.75;
      background:
        radial-gradient(circle at 12% 8%, rgba(56, 189, 248, 0.18), transparent 32%),
        radial-gradient(circle at 88% 12%, rgba(246, 182, 74, 0.14), transparent 28%),
        radial-gradient(circle at 60% 66%, rgba(99, 102, 241, 0.13), transparent 34%),
        linear-gradient(180deg, #07111f 0%, #091426 46%, #050b15 100%);
      overflow-x: hidden;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      z-index: -1;
      background-image:
        linear-gradient(rgba(148, 163, 184, 0.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 163, 184, 0.045) 1px, transparent 1px);
      background-size: 48px 48px;
      mask-image: linear-gradient(to bottom, rgba(0,0,0,.8), rgba(0,0,0,.18));
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    img, svg {
      max-width: 100%;
      display: block;
    }

    button, input {
      font: inherit;
    }

    button {
      cursor: pointer;
      border: 0;
      background: transparent;
      color: inherit;
    }

    input {
      border: 0;
      outline: 0;
    }

    ::selection {
      background: rgba(56, 189, 248, 0.32);
      color: #fff;
    }

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

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(7, 17, 31, 0.78);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(18px) saturate(140%);
      box-shadow: 0 12px 34px rgba(0, 0, 0, 0.22);
    }

    .nav-wrap {
      height: 78px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
      font-weight: 800;
      letter-spacing: -0.02em;
      color: var(--text);
    }

    .brand-mark {
      width: 38px;
      height: 38px;
      flex: 0 0 auto;
      border-radius: 50%;
      position: relative;
      background:
        radial-gradient(circle at 60% 45%, rgba(255, 208, 138, 0.95) 0 8%, transparent 9%),
        linear-gradient(135deg, rgba(56, 189, 248, 0.95), rgba(99, 102, 241, 0.92) 48%, rgba(246, 182, 74, 0.88));
      box-shadow: 0 0 28px rgba(56, 189, 248, 0.26), inset 0 0 0 1px rgba(255,255,255,0.22);
    }

    .brand-mark::before {
      content: "";
      position: absolute;
      left: 14px;
      top: 10px;
      border-left: 11px solid #07111f;
      border-top: 7px solid transparent;
      border-bottom: 7px solid transparent;
      filter: drop-shadow(0 0 8px rgba(255, 208, 138, 0.45));
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      inset: 6px;
      border-radius: 50%;
      border: 1px dashed rgba(255, 255, 255, 0.4);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.1;
      white-space: nowrap;
    }

    .brand-text strong {
      font-size: 17px;
    }

    .brand-text span {
      margin-top: 3px;
      font-size: 12px;
      color: var(--muted);
      font-weight: 500;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 7px;
      border: 1px solid var(--line);
      border-radius: 999px;
      background: rgba(15, 23, 42, 0.44);
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
    }

    .nav-link {
      position: relative;
      min-height: 42px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0 16px;
      border-radius: 999px;
      font-size: 14px;
      color: var(--muted);
      transition: color var(--transition), background var(--transition), box-shadow var(--transition);
    }

    .nav-link::after {
      content: "";
      position: absolute;
      left: 18px;
      right: 18px;
      bottom: 7px;
      height: 2px;
      border-radius: 999px;
      background: linear-gradient(90deg, var(--blue), var(--amber));
      opacity: 0;
      transform: scaleX(.5);
      transition: opacity var(--transition), transform var(--transition);
    }

    .nav-link:hover,
    .nav-link:focus-visible {
      color: var(--text);
      background: rgba(56, 189, 248, 0.08);
    }

    .nav-link.active {
      color: #fff;
      background: linear-gradient(135deg, rgba(56, 189, 248, 0.16), rgba(99, 102, 241, 0.13));
      box-shadow: inset 0 0 0 1px rgba(56, 189, 248, 0.18);
    }

    .nav-link.active::after {
      opacity: 1;
      transform: scaleX(1);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn {
      min-height: 48px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      padding: 0 20px;
      border-radius: 999px;
      font-size: 15px;
      font-weight: 700;
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition), color var(--transition);
      user-select: none;
    }

    .btn-primary {
      color: #fff;
      background: linear-gradient(135deg, var(--blue-2), var(--violet) 52%, var(--purple));
      box-shadow: 0 0 0 1px rgba(255,255,255,0.08), 0 14px 34px rgba(47, 128, 237, 0.28), 0 0 28px rgba(246, 182, 74, 0.13);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 0 1px rgba(255,255,255,0.12), 0 18px 42px rgba(47, 128, 237, 0.36), 0 0 34px rgba(246, 182, 74, 0.18);
    }

    .btn-secondary {
      color: var(--text);
      border: 1px solid var(--line);
      background: rgba(15, 23, 42, 0.52);
    }

    .btn-secondary:hover {
      transform: translateY(-2px);
      border-color: var(--line-strong);
      background: rgba(56, 189, 248, 0.1);
      box-shadow: var(--glow);
    }

    .btn:focus-visible,
    .nav-link:focus-visible,
    .mobile-toggle:focus-visible,
    .tag:focus-visible,
    .faq-question:focus-visible,
    .pager-btn:focus-visible,
    input:focus-visible {
      outline: 3px solid rgba(56, 189, 248, 0.46);
      outline-offset: 3px;
    }

    .btn:active,
    .card:active,
    .index-card:active {
      transform: translateY(0) scale(0.99);
    }

    .btn[disabled] {
      opacity: .45;
      cursor: not-allowed;
      transform: none;
      box-shadow: none;
    }

    .mobile-toggle {
      display: none;
      width: 46px;
      height: 46px;
      border-radius: 14px;
      border: 1px solid var(--line);
      background: rgba(15, 23, 42, 0.62);
      align-items: center;
      justify-content: center;
      position: relative;
    }

    .mobile-toggle span,
    .mobile-toggle::before,
    .mobile-toggle::after {
      content: "";
      width: 20px;
      height: 2px;
      border-radius: 99px;
      background: var(--text);
      position: absolute;
      transition: transform var(--transition), opacity var(--transition);
    }

    .mobile-toggle::before {
      transform: translateY(-7px);
    }

    .mobile-toggle::after {
      transform: translateY(7px);
    }

    .mobile-toggle.is-open span {
      opacity: 0;
    }

    .mobile-toggle.is-open::before {
      transform: rotate(45deg);
    }

    .mobile-toggle.is-open::after {
      transform: rotate(-45deg);
    }

    .page-hero {
      position: relative;
      padding: 74px 0 58px;
      overflow: hidden;
    }

    .page-hero::before {
      content: "";
      position: absolute;
      inset: 12px auto auto 52%;
      width: 520px;
      height: 320px;
      border-radius: 999px;
      background: radial-gradient(circle, rgba(246, 182, 74, 0.2), transparent 65%);
      filter: blur(2px);
      pointer-events: none;
    }

    .banner {
      position: relative;
      display: grid;
      grid-template-columns: minmax(0, 1.35fr) minmax(320px, .65fr);
      gap: 28px;
      align-items: stretch;
      min-height: 360px;
      padding: 34px;
      border-radius: var(--radius-xl);
      border: 1px solid var(--line);
      background:
        linear-gradient(135deg, rgba(15, 23, 42, 0.78), rgba(11, 22, 40, 0.62)),
        radial-gradient(circle at 80% 18%, rgba(56, 189, 248, 0.16), transparent 34%);
      box-shadow: var(--shadow);
      backdrop-filter: blur(18px) saturate(130%);
      overflow: hidden;
    }

    .banner::after {
      content: "";
      position: absolute;
      right: 34px;
      bottom: -8px;
      width: 210px;
      height: 70px;
      opacity: .12;
      background: repeating-linear-gradient(90deg, transparent 0 14px, #fff 14px 24px);
      transform: rotate(-5deg);
      border-radius: 20px;
    }

    .breadcrumb {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 9px;
      font-size: 14px;
      color: var(--weak);
      margin-bottom: 20px;
    }

    .breadcrumb a {
      color: var(--muted);
      transition: color var(--transition);
    }

    .breadcrumb a:hover {
      color: var(--blue);
    }

    .badge-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 18px;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      min-height: 32px;
      padding: 5px 12px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: rgba(15, 23, 42, 0.58);
      color: var(--muted);
      font-size: 13px;
      line-height: 1.3;
    }

    .badge.hot {
      color: #fff6df;
      border-color: rgba(246, 182, 74, 0.35);
      background: linear-gradient(135deg, rgba(246, 182, 74, 0.16), rgba(56, 189, 248, 0.06));
    }

    .badge.status {
      color: #dff7ff;
      border-color: rgba(56, 189, 248, 0.32);
      box-shadow: inset 0 0 16px rgba(56, 189, 248, 0.06);
    }

    h1 {
      max-width: 820px;
      font-size: clamp(34px, 4.5vw, 58px);
      line-height: 1.14;
      letter-spacing: -0.045em;
      font-weight: 800;
      margin-bottom: 20px;
    }

    .hero-lead {
      max-width: 720px;
      color: var(--muted);
      font-size: 17px;
      line-height: 1.85;
      margin-bottom: 28px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      align-items: center;
    }

    .stat-panel {
      position: relative;
      display: flex;
      flex-direction: column;
      gap: 16px;
      padding: 24px;
      border-radius: var(--radius-lg);
      border: 1px solid rgba(56, 189, 248, 0.22);
      background:
        radial-gradient(circle at 20% 0%, rgba(56, 189, 248, 0.18), transparent 35%),
        rgba(8, 18, 33, 0.72);
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.06), 0 18px 50px rgba(0,0,0,0.28);
      overflow: hidden;
    }

    .stat-panel::before {
      content: "";
      position: absolute;
      inset: 0;
      pointer-events: none;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,0.04), transparent);
      transform: translateX(-70%);
      animation: sheen 7s infinite;
    }

    @keyframes sheen {
      0%, 55% { transform: translateX(-70%); }
      80%, 100% { transform: translateX(70%); }
    }

    .panel-head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
      padding-bottom: 14px;
      border-bottom: 1px solid var(--line);
    }

    .panel-title {
      font-size: 18px;
      font-weight: 750;
    }

    .panel-dot {
      width: 10px;
      height: 10px;
      border-radius: 99px;
      background: var(--amber);
      box-shadow: 0 0 18px rgba(246, 182, 74, 0.7);
    }

    .mini-stats {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }

    .mini-stat {
      padding: 14px;
      border-radius: 18px;
      border: 1px solid var(--line);
      background: rgba(255,255,255,0.035);
    }

    .mini-stat strong {
      display: block;
      font-size: 24px;
      line-height: 1.1;
      color: #e8fbff;
    }

    .mini-stat span {
      display: block;
      margin-top: 6px;
      font-size: 13px;
      color: var(--muted);
    }

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

    .progress-item {
      display: grid;
      gap: 8px;
    }

    .progress-line {
      height: 7px;
      border-radius: 999px;
      background: rgba(148, 163, 184, 0.15);
      overflow: hidden;
    }

    .progress-line i {
      display: block;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--blue), var(--violet), var(--amber));
      box-shadow: 0 0 18px rgba(56, 189, 248, 0.3);
    }

    .section {
      padding: 52px 0;
      position: relative;
    }

    .section-head {
      display: flex;
      justify-content: space-between;
      align-items: end;
      gap: 28px;
      margin-bottom: 26px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--amber-soft);
      font-size: 13px;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .eyebrow::before {
      content: "";
      width: 20px;
      height: 2px;
      border-radius: 99px;
      background: linear-gradient(90deg, var(--amber), var(--blue));
    }

    h2 {
      font-size: clamp(26px, 3.2vw, 38px);
      line-height: 1.2;
      letter-spacing: -0.035em;
      font-weight: 800;
    }

    .section-desc {
      max-width: 560px;
      color: var(--muted);
      font-size: 16px;
    }

    .filter-bar {
      display: flex;
      gap: 12px;
      overflow-x: auto;
      padding: 8px 2px 18px;
      scrollbar-width: thin;
      scrollbar-color: rgba(56, 189, 248, 0.35) transparent;
    }

    .tag {
      flex: 0 0 auto;
      min-height: 42px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 0 16px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: rgba(15, 23, 42, 0.56);
      color: var(--muted);
      font-size: 14px;
      transition: color var(--transition), border-color var(--transition), box-shadow var(--transition), background var(--transition), transform var(--transition);
    }

    .tag:hover {
      color: var(--text);
      border-color: rgba(56, 189, 248, 0.32);
      transform: translateY(-1px);
    }

    .tag.active {
      color: #fff;
      border-color: rgba(246, 182, 74, 0.46);
      background: linear-gradient(135deg, rgba(56, 189, 248, 0.12), rgba(246, 182, 74, 0.12));
      box-shadow: 0 0 22px rgba(246, 182, 74, 0.1);
    }

    .content-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 360px;
      gap: 24px;
      align-items: start;
    }

    .index-list {
      display: grid;
      gap: 18px;
    }

    .index-card {
      display: grid;
      grid-template-columns: 122px minmax(0, 1fr);
      gap: 18px;
      padding: 18px;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: var(--panel);
      box-shadow: var(--shadow-soft);
      backdrop-filter: blur(16px) saturate(130%);
      transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition), background var(--transition);
      overflow: hidden;
    }

    .index-card:hover {
      transform: translateY(-3px);
      border-color: var(--line-strong);
      box-shadow: var(--shadow-soft), var(--glow);
      background: rgba(17, 28, 48, 0.72);
    }

    .cover {
      min-height: 128px;
      border-radius: 20px;
      border: 1px solid rgba(255,255,255,0.08);
      background:
        radial-gradient(circle at 72% 20%, rgba(246, 182, 74, 0.5), transparent 23%),
        linear-gradient(145deg, rgba(56, 189, 248, 0.24), rgba(99, 102, 241, 0.2) 42%, rgba(15, 23, 42, 0.86)),
        repeating-linear-gradient(0deg, rgba(255,255,255,0.08) 0 7px, transparent 7px 14px);
      position: relative;
      overflow: hidden;
    }

    .cover::before {
      content: attr(data-no);
      position: absolute;
      left: 14px;
      bottom: 10px;
      color: rgba(255,255,255,0.9);
      font-weight: 800;
      font-size: 28px;
      letter-spacing: -0.05em;
    }

    .cover::after {
      content: "";
      position: absolute;
      top: 0;
      bottom: 0;
      left: 10px;
      width: 8px;
      background: repeating-linear-gradient(0deg, rgba(7,17,31,.8) 0 6px, transparent 6px 12px);
      opacity: .55;
    }

    .card-kicker {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 9px;
    }

    .small-pill {
      display: inline-flex;
      align-items: center;
      min-height: 26px;
      padding: 3px 9px;
      border-radius: 999px;
      border: 1px solid rgba(56, 189, 248, 0.22);
      color: #ccefff;
      background: rgba(56, 189, 248, 0.08);
      font-size: 12px;
      line-height: 1.2;
    }

    .small-pill.amber {
      color: #ffe9bd;
      border-color: rgba(246, 182, 74, 0.28);
      background: rgba(246, 182, 74, 0.08);
    }

    .index-card h3 {
      font-size: 22px;
      line-height: 1.35;
      margin-bottom: 8px;
      transition: color var(--transition);
    }

    .index-card:hover h3 {
      color: #dff7ff;
    }

    .index-card p {
      color: var(--muted);
      font-size: 15px;
      line-height: 1.75;
      margin-bottom: 12px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .meta-row {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      color: var(--weak);
      font-size: 13px;
    }

    .sidebar {
      position: sticky;
      top: 98px;
      display: grid;
      gap: 18px;
    }

    .side-card,
    .card {
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: var(--panel);
      box-shadow: var(--shadow-soft);
      backdrop-filter: blur(16px) saturate(130%);
    }

    .side-card {
      padding: 20px;
    }

    .side-card h3 {
      font-size: 18px;
      margin-bottom: 14px;
    }

    .hot-list {
      display: grid;
      gap: 12px;
      list-style: none;
    }

    .hot-list li a {
      display: grid;
      grid-template-columns: 30px minmax(0,1fr);
      gap: 10px;
      align-items: center;
      min-height: 44px;
      padding: 8px;
      border-radius: 14px;
      color: var(--muted);
      transition: background var(--transition), color var(--transition);
    }

    .hot-list li a:hover {
      color: var(--text);
      background: rgba(56, 189, 248, 0.08);
    }

    .hot-list b {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 30px;
      height: 30px;
      border-radius: 10px;
      background: rgba(255,255,255,0.05);
      color: var(--amber-soft);
      font-size: 13px;
    }

    .quick-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
    }

    .quick-grid a {
      min-height: 44px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 8px 10px;
      border-radius: 14px;
      border: 1px solid var(--line);
      color: var(--muted);
      background: rgba(255,255,255,0.03);
      font-size: 14px;
      transition: color var(--transition), border-color var(--transition), background var(--transition);
    }

    .quick-grid a:hover {
      color: #fff;
      border-color: rgba(56, 189, 248, 0.32);
      background: rgba(56, 189, 248, 0.08);
    }

    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 9px;
    }

    .tag-cloud span {
      display: inline-flex;
      padding: 6px 10px;
      border-radius: 999px;
      color: var(--muted);
      border: 1px solid var(--line);
      background: rgba(255,255,255,0.03);
      font-size: 13px;
    }

    .scenario-grid {
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      gap: 18px;
    }

    .scenario-card {
      padding: 22px;
      min-height: 210px;
      transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
      position: relative;
      overflow: hidden;
    }

    .scenario-card::after {
      content: "";
      position: absolute;
      right: -44px;
      top: -44px;
      width: 120px;
      height: 120px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(56, 189, 248, 0.18), transparent 68%);
    }

    .scenario-card:hover {
      transform: translateY(-3px);
      border-color: var(--line-strong);
      box-shadow: var(--shadow-soft), var(--glow);
    }

    .icon-box {
      width: 44px;
      height: 44px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 15px;
      color: #07111f;
      background: linear-gradient(135deg, var(--amber-soft), var(--blue));
      font-weight: 900;
      margin-bottom: 18px;
    }

    .scenario-card h3 {
      font-size: 20px;
      margin-bottom: 9px;
    }

    .scenario-card p {
      color: var(--muted);
      font-size: 15px;
    }

    .steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      counter-reset: step;
    }

    .step {
      position: relative;
      padding: 22px;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: linear-gradient(180deg, rgba(15, 23, 42, 0.66), rgba(15, 23, 42, 0.42));
      counter-increment: step;
    }

    .step::before {
      content: "0" counter(step);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 42px;
      height: 42px;
      border-radius: 14px;
      background: rgba(56, 189, 248, 0.1);
      border: 1px solid rgba(56, 189, 248, 0.22);
      color: var(--blue);
      font-weight: 800;
      margin-bottom: 16px;
    }

    .step::after {
      content: "";
      position: absolute;
      top: 42px;
      right: -17px;
      width: 18px;
      height: 2px;
      background: linear-gradient(90deg, rgba(56, 189, 248, .5), transparent);
    }

    .step:last-child::after {
      display: none;
    }

    .step h3 {
      font-size: 18px;
      margin-bottom: 7px;
    }

    .step p {
      color: var(--muted);
      font-size: 14.5px;
    }

    .pager {
      display: flex;
      justify-content: center;
      gap: 10px;
      margin-top: 26px;
      flex-wrap: wrap;
    }

    .pager-btn {
      min-width: 44px;
      height: 44px;
      padding: 0 14px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 14px;
      border: 1px solid var(--line);
      background: rgba(15, 23, 42, 0.58);
      color: var(--muted);
      transition: color var(--transition), border-color var(--transition), background var(--transition), transform var(--transition);
    }

    .pager-btn:hover:not(.disabled) {
      color: var(--text);
      border-color: var(--line-strong);
      transform: translateY(-2px);
    }

    .pager-btn.active {
      color: #fff;
      border-color: rgba(246, 182, 74, 0.42);
      background: linear-gradient(135deg, rgba(47,128,237,.26), rgba(246,182,74,.15));
    }

    .pager-btn.disabled {
      opacity: .42;
      cursor: not-allowed;
    }

    .faq-wrap {
      display: grid;
      gap: 14px;
    }

    .faq-item {
      border: 1px solid var(--line);
      border-radius: 20px;
      background: rgba(15, 23, 42, 0.58);
      overflow: hidden;
      transition: border-color var(--transition), box-shadow var(--transition);
    }

    .faq-item.is-open {
      border-color: rgba(56, 189, 248, 0.32);
      box-shadow: 0 0 24px rgba(56, 189, 248, 0.12);
    }

    .faq-question {
      width: 100%;
      min-height: 58px;
      padding: 16px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      text-align: left;
      font-weight: 750;
      color: var(--text);
    }

    .faq-question span:first-child {
      display: inline-flex;
      align-items: center;
      gap: 10px;
    }

    .faq-question span:first-child::before {
      content: "?";
      width: 26px;
      height: 26px;
      flex: 0 0 auto;
      border-radius: 9px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: rgba(56, 189, 248, 0.11);
      color: var(--blue);
      font-size: 14px;
    }

    .faq-icon {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      border: 1px solid var(--line);
      position: relative;
      flex: 0 0 auto;
      transition: transform var(--transition), border-color var(--transition);
    }

    .faq-icon::before,
    .faq-icon::after {
      content: "";
      position: absolute;
      left: 6px;
      right: 6px;
      top: 50%;
      height: 2px;
      border-radius: 99px;
      background: var(--muted);
      transform: translateY(-50%);
    }

    .faq-icon::after {
      transform: translateY(-50%) rotate(90deg);
      transition: opacity var(--transition);
    }

    .faq-item.is-open .faq-icon {
      transform: rotate(180deg);
      border-color: rgba(56, 189, 248, 0.35);
    }

    .faq-item.is-open .faq-icon::after {
      opacity: 0;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 260ms ease;
    }

    .faq-answer p {
      padding: 0 20px 18px 56px;
      color: var(--muted);
      font-size: 15.5px;
      line-height: 1.8;
    }

    .cta-strip {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      align-items: center;
      gap: 24px;
      padding: 28px;
      border-radius: var(--radius-xl);
      border: 1px solid rgba(246, 182, 74, 0.26);
      background:
        radial-gradient(circle at 82% 18%, rgba(246, 182, 74, 0.18), transparent 32%),
        linear-gradient(135deg, rgba(15, 23, 42, 0.78), rgba(8, 18, 33, 0.72));
      box-shadow: var(--shadow);
    }

    .cta-strip h2 {
      font-size: clamp(24px, 2.8vw, 34px);
      margin-bottom: 8px;
    }

    .cta-strip p {
      color: var(--muted);
      max-width: 720px;
    }

    .mini-form {
      display: flex;
      gap: 10px;
      margin-top: 18px;
      max-width: 560px;
    }

    .mini-form input {
      flex: 1;
      min-width: 0;
      height: 48px;
      padding: 0 16px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: rgba(7, 17, 31, 0.58);
      color: var(--text);
      transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
    }

    .mini-form input::placeholder {
      color: var(--weak);
    }

    .mini-form input:focus {
      border-color: var(--line-strong);
      box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.1);
      background: rgba(7, 17, 31, 0.78);
    }

    .mini-form.has-error input {
      border-color: rgba(251, 146, 125, 0.55);
      box-shadow: 0 0 0 4px rgba(251, 146, 125, 0.1);
    }

    .site-footer {
      margin-top: 52px;
      padding: 54px 0 26px;
      border-top: 1px solid var(--line);
      background:
        radial-gradient(circle at 20% 0%, rgba(56, 189, 248, 0.10), transparent 30%),
        rgba(5, 11, 21, 0.86);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr .7fr .7fr;
      gap: 34px;
      padding-bottom: 28px;
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      font-size: 18px;
      margin-bottom: 14px;
    }

    .footer-desc {
      max-width: 520px;
      color: var(--muted);
      font-size: 14.5px;
      line-height: 1.8;
    }

    .footer-title {
      color: var(--text);
      font-weight: 750;
      margin-bottom: 12px;
    }

    .footer-links {
      display: grid;
      gap: 10px;
    }

    .footer-links a {
      color: var(--muted);
      font-size: 14.5px;
      transition: color var(--transition), transform var(--transition);
    }

    .footer-links a:hover {
      color: var(--blue);
      transform: translateX(2px);
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      padding-top: 22px;
      border-top: 1px solid var(--line);
      color: var(--weak);
      font-size: 13px;
    }

    @media (max-width: 1060px) {
      .nav-menu {
        position: fixed;
        left: 20px;
        right: 20px;
        top: 88px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 12px;
        border-radius: 24px;
        background: rgba(7, 17, 31, 0.94);
        box-shadow: var(--shadow);
      }

      .nav-menu.is-open {
        display: flex;
      }

      .nav-link {
        justify-content: flex-start;
        padding: 0 18px;
      }

      .mobile-toggle {
        display: inline-flex;
      }

      .nav-actions .btn-primary {
        display: none;
      }

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

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

      .sidebar {
        position: static;
        grid-template-columns: 1fr 1fr;
      }

      .scenario-grid,
      .steps {
        grid-template-columns: 1fr 1fr;
      }

      .step::after {
        display: none;
      }
    }

    @media (max-width: 760px) {
      .container {
        width: min(calc(100% - 28px), var(--container));
      }

      .nav-wrap {
        height: 70px;
      }

      .brand-text strong {
        font-size: 15px;
      }

      .brand-text span {
        display: none;
      }

      .page-hero {
        padding: 44px 0 36px;
      }

      .banner {
        padding: 22px;
        border-radius: 26px;
        min-height: auto;
      }

      .hero-lead {
        font-size: 15.5px;
      }

      .hero-actions,
      .mini-form {
        flex-direction: column;
        align-items: stretch;
      }

      .btn,
      .mini-form input {
        width: 100%;
      }

      .section {
        padding: 38px 0;
      }

      .section-head {
        display: grid;
        gap: 10px;
      }

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

      .cover {
        min-height: 150px;
      }

      .sidebar,
      .scenario-grid,
      .steps {
        grid-template-columns: 1fr;
      }

      .cta-strip {
        grid-template-columns: 1fr;
        padding: 22px;
      }

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

      .footer-bottom {
        flex-direction: column;
      }

      .faq-answer p {
        padding-left: 20px;
      }
    }

    @media (max-width: 420px) {
      .brand-mark {
        width: 34px;
        height: 34px;
      }

      .brand-text strong {
        max-width: 148px;
        overflow: hidden;
        text-overflow: ellipsis;
      }

      h1 {
        font-size: 32px;
      }

      .mini-stats {
        grid-template-columns: 1fr;
      }

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

      .index-card,
      .side-card,
      .scenario-card,
      .step {
        padding: 18px;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: .01ms !important;
      }
    }