/* roulang page: index */
:root {
      --bg: #050b17;
      --bg-soft: #081426;
      --panel: rgba(12, 28, 48, 0.72);
      --panel-strong: rgba(15, 39, 65, 0.88);
      --line: rgba(142, 207, 236, 0.22);
      --line-bright: rgba(67, 229, 255, 0.56);
      --text: #edf7ff;
      --muted: #a9bfd3;
      --faint: #6f879c;
      --cyan: #38e8ff;
      --cyan-soft: rgba(56, 232, 255, 0.16);
      --silver: #d6e2ef;
      --green: #7fffd8;
      --warning: #ffd166;
      --radius: 8px;
      --shadow: 0 22px 70px rgba(0, 0, 0, 0.34);
      --glow: 0 0 0 1px rgba(56, 232, 255, 0.26), 0 0 26px rgba(56, 232, 255, 0.16);
      --nav-width: 248px;
      --ease: 180ms ease;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      color: var(--text);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
      line-height: 1.75;
      background:
        radial-gradient(circle at 72% 12%, rgba(44, 195, 255, 0.18), transparent 30%),
        radial-gradient(circle at 28% 70%, rgba(31, 105, 181, 0.16), transparent 32%),
        linear-gradient(135deg, #030711 0%, #07172c 48%, #050b17 100%);
      overflow-x: hidden;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      background-image:
        linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
      background-size: 44px 44px;
      mask-image: linear-gradient(to bottom, rgba(0,0,0,0.85), rgba(0,0,0,0.15));
      z-index: -2;
    }

    body::after {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      background:
        linear-gradient(105deg, transparent 0 18%, rgba(56,232,255,0.08) 26%, transparent 38% 100%),
        repeating-linear-gradient(0deg, rgba(255,255,255,0.018) 0 1px, transparent 1px 3px);
      opacity: 0.65;
      z-index: -1;
    }

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

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

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

    button,
    input {
      font: inherit;
    }

    button:focus-visible,
    a:focus-visible,
    input:focus-visible {
      outline: 2px solid var(--cyan);
      outline-offset: 3px;
    }

    .site-shell {
      min-height: 100vh;
      display: flex;
    }

    .side-nav {
      position: fixed;
      inset: 0 auto 0 0;
      width: var(--nav-width);
      padding: 24px 18px;
      background: rgba(4, 12, 25, 0.78);
      border-right: 1px solid var(--line);
      backdrop-filter: blur(18px);
      z-index: 30;
      display: flex;
      flex-direction: column;
      gap: 24px;
    }

    .brand-mark {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 10px 8px 18px;
      border-bottom: 1px solid rgba(142, 207, 236, 0.14);
    }

    .brand-icon {
      width: 38px;
      height: 38px;
      border-radius: var(--radius);
      display: grid;
      place-items: center;
      color: #04101f;
      background: linear-gradient(135deg, var(--cyan), #c9fbff);
      box-shadow: var(--glow);
      flex: 0 0 auto;
    }

    .brand-text {
      min-width: 0;
    }

    .brand-text strong {
      display: block;
      font-size: 15px;
      line-height: 1.35;
      letter-spacing: 0;
    }

    .brand-text span {
      display: block;
      color: var(--faint);
      font-size: 12px;
      margin-top: 2px;
    }

    .nav-list {
      display: grid;
      gap: 8px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .nav-link {
      display: flex;
      align-items: center;
      gap: 11px;
      min-height: 44px;
      padding: 10px 12px;
      border-radius: var(--radius);
      color: var(--muted);
      border: 1px solid transparent;
    }

    .nav-link i {
      width: 18px;
      text-align: center;
      color: var(--faint);
    }

    .nav-link:hover,
    .nav-link.active {
      color: var(--text);
      background: var(--cyan-soft);
      border-color: rgba(56, 232, 255, 0.28);
      box-shadow: 0 10px 26px rgba(0, 0, 0, 0.16);
    }

    .nav-link:hover i,
    .nav-link.active i {
      color: var(--cyan);
    }

    .nav-note {
      margin-top: auto;
      padding: 14px;
      border-radius: var(--radius);
      border: 1px solid var(--line);
      background: rgba(255,255,255,0.035);
      color: var(--muted);
      font-size: 13px;
      line-height: 1.65;
    }

    .mobile-topbar {
      display: none;
      position: sticky;
      top: 0;
      z-index: 40;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 12px 16px;
      background: rgba(4, 12, 25, 0.86);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(16px);
    }

    .menu-toggle {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: var(--radius);
      border: 1px solid var(--line);
      color: var(--text);
      background: rgba(255,255,255,0.04);
      cursor: pointer;
    }

    .main-area {
      width: 100%;
      margin-left: var(--nav-width);
    }

    .page-inner {
      width: min(1180px, calc(100% - 48px));
      margin: 0 auto;
    }

    .section {
      padding: 72px 0;
      border-bottom: 1px solid rgba(142, 207, 236, 0.1);
    }

    .section-tight {
      padding: 48px 0;
    }

    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 26px;
    }

    .section-kicker,
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      min-height: 28px;
      padding: 4px 10px;
      border-radius: 999px;
      border: 1px solid rgba(56, 232, 255, 0.3);
      background: rgba(56, 232, 255, 0.1);
      color: #c9fbff;
      font-size: 12px;
      line-height: 1.35;
    }

    .section-title {
      margin: 10px 0 0;
      font-size: clamp(26px, 3.2vw, 44px);
      line-height: 1.18;
      letter-spacing: 0;
      font-weight: 800;
    }

    .section-desc {
      max-width: 620px;
      margin: 10px 0 0;
      color: var(--muted);
      font-size: 16px;
    }

    .hero {
      min-height: 720px;
      display: flex;
      align-items: center;
      position: relative;
      overflow: hidden;
      padding: 52px 0 78px;
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: 42px 32px 54px;
      border: 1px solid rgba(56, 232, 255, 0.16);
      border-radius: 10px;
      background:
        linear-gradient(90deg, rgba(4,12,25,0.18), rgba(4,12,25,0.72)),
        radial-gradient(circle at 74% 38%, rgba(56,232,255,0.18), transparent 28%);
      box-shadow: inset 0 0 120px rgba(56, 232, 255, 0.08);
      pointer-events: none;
    }

    .hero-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
      gap: 34px;
      align-items: stretch;
    }

    .hero-copy {
      padding: 34px 0;
    }

    .hero h1 {
      margin: 14px 0 18px;
      font-size: clamp(42px, 7vw, 86px);
      line-height: 0.98;
      letter-spacing: 0;
      font-weight: 900;
      text-shadow: 0 0 38px rgba(56, 232, 255, 0.15);
    }

    .hero-intro {
      max-width: 690px;
      margin: 0 0 26px;
      color: #c7d7e7;
      font-size: clamp(16px, 1.35vw, 19px);
    }

    .hero-actions,
    .button-row {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
    }

    .btn-glow,
    .btn-ghost,
    .btn-soft {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 46px;
      padding: 11px 18px;
      border-radius: var(--radius);
      font-weight: 700;
      line-height: 1.2;
      cursor: pointer;
      border: 1px solid transparent;
      transition: transform var(--ease), box-shadow var(--ease), background var(--ease), color var(--ease), border-color var(--ease);
    }

    .btn-glow {
      color: #03101d;
      background: linear-gradient(135deg, #40eaff, #d7fbff);
      box-shadow: var(--glow);
    }

    .btn-glow:hover {
      color: #03101d;
      transform: translateY(-1px);
      box-shadow: 0 0 0 1px rgba(56, 232, 255, 0.55), 0 0 34px rgba(56, 232, 255, 0.26);
    }

    .btn-ghost {
      color: var(--text);
      background: rgba(255,255,255,0.04);
      border-color: var(--line);
    }

    .btn-ghost:hover,
    .btn-soft:hover {
      color: var(--text);
      border-color: var(--line-bright);
      background: rgba(56,232,255,0.1);
      transform: translateY(-1px);
    }

    .btn-soft {
      color: #dff8ff;
      background: rgba(56,232,255,0.09);
      border-color: rgba(56,232,255,0.22);
    }

    .hero-data {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      margin-top: 34px;
      max-width: 640px;
    }

    .data-pill {
      min-height: 82px;
      padding: 13px 12px;
      border-radius: var(--radius);
      border: 1px solid var(--line);
      background: rgba(5, 17, 31, 0.7);
    }

    .data-pill strong {
      display: block;
      color: var(--cyan);
      font-size: 22px;
      line-height: 1.2;
    }

    .data-pill span {
      color: var(--muted);
      font-size: 13px;
    }

    .live-board {
      align-self: center;
      min-height: 510px;
      border-radius: 10px;
      border: 1px solid rgba(56, 232, 255, 0.26);
      background:
        linear-gradient(150deg, rgba(10, 30, 53, 0.76), rgba(5, 12, 25, 0.86)),
        radial-gradient(circle at 30% 18%, rgba(255,255,255,0.14), transparent 20%);
      box-shadow: var(--shadow);
      overflow: hidden;
      position: relative;
    }

    .live-board::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(120deg, transparent 0 42%, rgba(56,232,255,0.13) 48%, transparent 56% 100%),
        linear-gradient(to bottom, transparent, rgba(0,0,0,0.36));
      pointer-events: none;
    }

    .poster-stage {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-rows: auto 1fr auto;
      min-height: 510px;
      padding: 22px;
    }

    .poster-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
    }

    .countdown {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 8px;
      margin: 28px 0;
    }

    .time-box {
      text-align: center;
      padding: 12px 8px;
      border-radius: var(--radius);
      background: rgba(0,0,0,0.28);
      border: 1px solid rgba(255,255,255,0.12);
    }

    .time-box strong {
      display: block;
      color: #fff;
      font-size: 27px;
      line-height: 1.1;
    }

    .time-box span {
      color: var(--faint);
      font-size: 12px;
    }

    .poster-title {
      margin-top: auto;
    }

    .poster-title h2 {
      margin: 0;
      font-size: clamp(25px, 3vw, 38px);
      line-height: 1.12;
      font-weight: 850;
    }

    .poster-title p {
      color: var(--muted);
      margin: 12px 0 0;
    }

    .remind-form {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 10px;
      margin-top: 22px;
    }

    .remind-form input {
      height: 46px;
      padding: 0 14px;
      color: var(--text);
      border-radius: var(--radius);
      border: 1px solid var(--line);
      background: rgba(2, 10, 19, 0.72);
      box-shadow: none;
    }

    .glass-card {
      border-radius: var(--radius);
      border: 1px solid var(--line);
      background: var(--panel);
      box-shadow: 0 16px 44px rgba(0,0,0,0.22);
      backdrop-filter: blur(14px);
      transition: transform var(--ease), border-color var(--ease), background var(--ease), box-shadow var(--ease);
    }

    .glass-card:hover {
      transform: translateY(-2px);
      border-color: rgba(56,232,255,0.36);
      background: rgba(15, 38, 64, 0.82);
      box-shadow: 0 20px 52px rgba(0,0,0,0.28);
    }

    .series-strip {
      display: grid;
      grid-template-columns: 0.85fr 1.15fr;
      gap: 18px;
      align-items: stretch;
    }

    .series-map {
      padding: 22px;
      min-height: 260px;
    }

    .series-list {
      margin: 18px 0 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 12px;
    }

    .series-list li {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      padding: 12px;
      border-radius: var(--radius);
      background: rgba(255,255,255,0.035);
      border: 1px solid rgba(142,207,236,0.12);
    }

    .series-list i {
      color: var(--cyan);
      margin-top: 5px;
    }

    .series-list strong {
      display: block;
      color: var(--text);
      line-height: 1.35;
    }

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

    .entry-matrix {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
    }

    .entry-card {
      padding: 20px;
      min-height: 146px;
    }

    .entry-card h3,
    .feature-card h3,
    .case-card h3,
    .price-card h3 {
      margin: 12px 0 8px;
      font-size: 20px;
      line-height: 1.28;
      font-weight: 800;
    }

    .entry-card p,
    .feature-card p,
    .case-card p,
    .price-card p {
      color: var(--muted);
      margin: 0;
      font-size: 15px;
    }

    .feature-lanes {
      display: grid;
      gap: 16px;
    }

    .feature-card {
      display: grid;
      grid-template-columns: 120px 1fr auto;
      gap: 18px;
      align-items: center;
      padding: 20px;
    }

    .feature-index {
      min-height: 84px;
      display: grid;
      place-items: center;
      border-radius: var(--radius);
      color: var(--cyan);
      font-size: 30px;
      font-weight: 900;
      background: rgba(56,232,255,0.08);
      border: 1px solid rgba(56,232,255,0.22);
    }

    .topic-grid {
      display: grid;
      grid-template-columns: 1.08fr 0.92fr;
      gap: 18px;
    }

    .hot-panel {
      padding: 24px;
      min-height: 420px;
      display: grid;
      align-content: space-between;
      background:
        linear-gradient(160deg, rgba(14, 43, 74, 0.84), rgba(4, 12, 25, 0.74)),
        radial-gradient(circle at 80% 20%, rgba(56,232,255,0.18), transparent 28%);
    }

    .hot-panel h3 {
      margin: 18px 0 8px;
      font-size: clamp(28px, 3.8vw, 48px);
      line-height: 1.05;
    }

    .hot-panel p {
      color: var(--muted);
      max-width: 650px;
    }

    .hot-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 18px;
    }

    .rank-list {
      display: grid;
      gap: 12px;
    }

    .rank-item {
      display: grid;
      grid-template-columns: 44px 1fr;
      gap: 12px;
      padding: 15px;
      align-items: center;
    }

    .rank-no {
      width: 44px;
      height: 44px;
      border-radius: var(--radius);
      display: grid;
      place-items: center;
      color: #061326;
      font-weight: 900;
      background: linear-gradient(135deg, var(--cyan), #e6fdff);
    }

    .rank-item h4,
    .news-list h4 {
      margin: 0;
      font-size: 16px;
      line-height: 1.4;
    }

    .rank-item p {
      margin: 4px 0 0;
      color: var(--muted);
      font-size: 14px;
    }

    .scenario-timeline {
      position: relative;
      display: grid;
      gap: 14px;
    }

    .timeline-item {
      display: grid;
      grid-template-columns: 160px 1fr;
      gap: 18px;
      padding: 18px;
      align-items: start;
    }

    .timeline-time {
      color: var(--cyan);
      font-weight: 800;
    }

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

    .timeline-item p {
      margin: 0;
      color: var(--muted);
    }

    .news-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 340px;
      gap: 18px;
      align-items: start;
    }

    .news-list {
      padding: 8px;
    }

    .news-link {
      display: grid;
      grid-template-columns: 112px 1fr auto;
      gap: 14px;
      align-items: center;
      padding: 15px;
      border-radius: var(--radius);
      border-bottom: 1px solid rgba(142,207,236,0.1);
      color: var(--text);
    }

    .news-link:hover {
      background: rgba(56,232,255,0.08);
    }

    .news-link time {
      color: var(--faint);
      font-size: 13px;
    }

    .news-link p {
      margin: 4px 0 0;
      color: var(--muted);
      font-size: 14px;
    }

    .recommend-box {
      padding: 22px;
      position: sticky;
      top: 24px;
    }

    .recommend-box h3 {
      margin: 12px 0 10px;
      font-size: 21px;
    }

    .recommend-box p {
      color: var(--muted);
      margin-bottom: 18px;
    }

    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }

    .case-card {
      padding: 20px;
    }

    .case-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      margin-top: 18px;
      padding-top: 14px;
      border-top: 1px solid rgba(142,207,236,0.12);
      color: var(--faint);
      font-size: 13px;
    }

    .price-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }

    .price-card {
      padding: 22px;
      position: relative;
    }

    .price-card.featured {
      border-color: rgba(56,232,255,0.48);
      box-shadow: var(--glow);
    }

    .price {
      margin: 18px 0;
      font-size: 34px;
      line-height: 1;
      color: var(--text);
      font-weight: 900;
    }

    .price span {
      color: var(--faint);
      font-size: 14px;
      font-weight: 500;
    }

    .check-list {
      margin: 0 0 20px;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 9px;
      color: var(--muted);
      font-size: 14px;
    }

    .check-list li {
      display: flex;
      gap: 9px;
      align-items: flex-start;
    }

    .check-list i {
      color: var(--green);
      margin-top: 5px;
    }

    .promise-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 12px;
    }

    .promise-item {
      padding: 16px;
      display: flex;
      gap: 12px;
      align-items: center;
    }

    .promise-item i {
      color: var(--cyan);
      font-size: 22px;
    }

    .promise-item strong {
      display: block;
      line-height: 1.35;
    }

    .promise-item span {
      display: block;
      color: var(--muted);
      font-size: 13px;
    }

    .faq-wrap {
      display: grid;
      grid-template-columns: 0.78fr 1.22fr;
      gap: 22px;
      align-items: start;
    }

    .accordion {
      background: transparent;
    }

    .accordion-item {
      margin-bottom: 10px;
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--line);
      background: rgba(12, 28, 48, 0.66);
    }

    .accordion-title {
      color: var(--text);
      border: 0;
      background: transparent;
      font-weight: 800;
      font-size: 16px;
      padding: 18px 44px 18px 18px;
    }

    .accordion-title:hover,
    .accordion-title:focus {
      color: var(--cyan);
      background: rgba(56,232,255,0.08);
    }

    .accordion-content {
      color: var(--muted);
      border: 0;
      background: rgba(0,0,0,0.14);
      padding: 0 18px 18px;
    }

    .member-cta {
      padding: 32px;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 18px;
      align-items: center;
      background:
        linear-gradient(120deg, rgba(56,232,255,0.14), rgba(9,26,46,0.84)),
        radial-gradient(circle at 88% 26%, rgba(255,255,255,0.13), transparent 20%);
    }

    .member-cta h2 {
      margin: 0 0 8px;
      font-size: clamp(26px, 3vw, 40px);
      line-height: 1.18;
    }

    .member-cta p {
      margin: 0;
      color: var(--muted);
      max-width: 720px;
    }

    .site-footer {
      padding: 46px 0 32px;
      background: rgba(3, 8, 17, 0.48);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.7fr 0.9fr;
      gap: 26px;
      align-items: start;
    }

    .footer-title {
      font-size: 18px;
      font-weight: 850;
      margin-bottom: 10px;
    }

    .footer-text,
    .footer-links a,
    .copyright {
      color: var(--muted);
      font-size: 14px;
    }

    .footer-links {
      display: grid;
      gap: 8px;
    }

    .copyright {
      margin-top: 28px;
      padding-top: 18px;
      border-top: 1px solid rgba(142,207,236,0.12);
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      gap: 12px;
    }

    @media screen and (max-width: 1024px) {
      :root {
        --nav-width: 220px;
      }

      .page-inner {
        width: min(100% - 32px, 960px);
      }

      .hero-grid,
      .series-strip,
      .topic-grid,
      .news-layout,
      .faq-wrap,
      .member-cta {
        grid-template-columns: 1fr;
      }

      .hero {
        min-height: auto;
      }

      .hero::before {
        inset: 18px 16px 34px;
      }

      .live-board,
      .poster-stage {
        min-height: 460px;
      }

      .case-grid,
      .price-grid {
        grid-template-columns: 1fr 1fr;
      }

      .promise-bar {
        grid-template-columns: 1fr 1fr;
      }

      .recommend-box {
        position: static;
      }
    }

    @media screen and (max-width: 768px) {
      .site-shell {
        display: block;
      }

      .mobile-topbar {
        display: flex;
      }

      .side-nav {
        transform: translateX(-104%);
        transition: transform var(--ease);
        width: min(82vw, 310px);
        box-shadow: 20px 0 60px rgba(0,0,0,0.36);
      }

      .side-nav.is-open {
        transform: translateX(0);
      }

      .main-area {
        margin-left: 0;
      }

      .section {
        padding: 54px 0;
      }

      .section-head {
        display: block;
      }

      .hero {
        padding-top: 34px;
      }

      .hero-copy {
        padding: 16px 0;
      }

      .hero-data,
      .entry-matrix,
      .case-grid,
      .price-grid,
      .promise-bar {
        grid-template-columns: 1fr;
      }

      .feature-card,
      .timeline-item,
      .news-link {
        grid-template-columns: 1fr;
      }

      .feature-index {
        min-height: 58px;
        place-items: center start;
        padding-left: 16px;
      }

      .countdown {
        grid-template-columns: repeat(2, 1fr);
      }

      .remind-form {
        grid-template-columns: 1fr;
      }

      .remind-form .btn-glow,
      .member-cta .btn-glow,
      .hero-actions a,
      .button-row a {
        width: 100%;
      }

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

    @media screen and (max-width: 520px) {
      .page-inner {
        width: min(100% - 24px, 460px);
      }

      .hero h1 {
        font-size: 40px;
      }

      .section-title {
        font-size: 28px;
      }

      .poster-stage {
        padding: 16px;
      }

      .poster-top {
        align-items: flex-start;
        flex-direction: column;
      }

      .member-cta {
        padding: 22px;
      }

      .copyright {
        display: block;
      }
    }

/* roulang page: category1 */
:root {
      --bg: #050b18;
      --bg-2: #071426;
      --panel: rgba(13, 29, 52, 0.72);
      --panel-strong: rgba(16, 38, 68, 0.9);
      --line: rgba(136, 202, 255, 0.18);
      --line-strong: rgba(126, 224, 255, 0.38);
      --text: #edf7ff;
      --muted: #a9bdd2;
      --soft: #6f839a;
      --cyan: #54e7ff;
      --cyan-2: #8feeff;
      --silver: #d6e2ee;
      --danger: #ff7a9a;
      --success: #78f2bd;
      --warning: #ffd36c;
      --radius: 8px;
      --shadow: 0 18px 60px rgba(0, 0, 0, 0.34);
      --glow: 0 0 22px rgba(84, 231, 255, 0.28);
      --sidebar: 268px;
      --ease: 180ms ease;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      min-height: 100vh;
      color: var(--text);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
      line-height: 1.75;
      background:
        radial-gradient(circle at 80% 12%, rgba(84, 231, 255, 0.18), transparent 30%),
        radial-gradient(circle at 18% 38%, rgba(79, 126, 255, 0.14), transparent 34%),
        linear-gradient(135deg, #030711 0%, #081529 48%, #06101f 100%);
      overflow-x: hidden;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      background-image:
        linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
      background-size: 42px 42px;
      mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.72), transparent 78%);
      z-index: -2;
    }

    body::after {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      background: linear-gradient(115deg, transparent 0%, rgba(84, 231, 255, 0.06) 48%, transparent 66%);
      z-index: -1;
    }

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

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

    button,
    input,
    select {
      font: inherit;
    }

    button {
      cursor: pointer;
    }

    :focus-visible {
      outline: 2px solid var(--cyan);
      outline-offset: 3px;
    }

    .app-shell {
      min-height: 100vh;
      display: flex;
    }

    .sidebar {
      position: fixed;
      inset: 0 auto 0 0;
      width: var(--sidebar);
      padding: 24px 18px;
      background: rgba(4, 13, 27, 0.82);
      border-right: 1px solid var(--line);
      backdrop-filter: blur(18px);
      z-index: 30;
      box-shadow: 16px 0 44px rgba(0, 0, 0, 0.24);
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 12px 10px 22px;
      border-bottom: 1px solid var(--line);
      margin-bottom: 18px;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border: 1px solid var(--line-strong);
      border-radius: var(--radius);
      color: var(--cyan);
      background: linear-gradient(145deg, rgba(84, 231, 255, 0.18), rgba(255, 255, 255, 0.04));
      box-shadow: var(--glow);
      flex: 0 0 auto;
    }

    .brand-name {
      font-weight: 800;
      letter-spacing: 0;
      line-height: 1.25;
      font-size: 17px;
    }

    .brand-note {
      color: var(--muted);
      font-size: 12px;
      margin-top: 2px;
    }

    .nav-list {
      margin: 0;
      list-style: none;
      display: grid;
      gap: 8px;
    }

    .nav-link {
      display: flex;
      align-items: center;
      gap: 11px;
      min-height: 44px;
      padding: 10px 12px;
      color: var(--muted);
      border-radius: var(--radius);
      border: 1px solid transparent;
      background: transparent;
      font-weight: 650;
    }

    .nav-link i {
      width: 18px;
      text-align: center;
      color: var(--soft);
    }

    .nav-link:hover,
    .nav-link.active {
      color: var(--text);
      border-color: var(--line-strong);
      background: rgba(84, 231, 255, 0.1);
      box-shadow: inset 0 0 24px rgba(84, 231, 255, 0.04);
    }

    .nav-link:hover i,
    .nav-link.active i {
      color: var(--cyan);
    }

    .sidebar-status {
      position: absolute;
      left: 18px;
      right: 18px;
      bottom: 22px;
      padding: 14px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255, 255, 255, 0.035);
      color: var(--muted);
      font-size: 13px;
    }

    .status-dot {
      width: 8px;
      height: 8px;
      display: inline-block;
      margin-right: 8px;
      border-radius: 999px;
      background: var(--success);
      box-shadow: 0 0 12px rgba(120, 242, 189, 0.6);
    }

    .mobile-topbar {
      display: none;
      position: sticky;
      top: 0;
      z-index: 40;
      align-items: center;
      justify-content: space-between;
      padding: 12px 16px;
      border-bottom: 1px solid var(--line);
      background: rgba(4, 13, 27, 0.88);
      backdrop-filter: blur(16px);
    }

    .menu-toggle {
      width: 42px;
      height: 42px;
      border-radius: var(--radius);
      border: 1px solid var(--line);
      color: var(--text);
      background: rgba(255, 255, 255, 0.05);
    }

    .main-area {
      width: 100%;
      margin-left: var(--sidebar);
      min-width: 0;
    }

    .page-inner {
      width: min(1180px, calc(100% - 48px));
      margin: 0 auto;
    }

    .hero {
      position: relative;
      padding: 54px 0 38px;
      border-bottom: 1px solid var(--line);
    }

    .hero-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
      gap: 24px;
      align-items: stretch;
    }

    .hero-panel,
    .rank-panel,
    .glass-card,
    .filter-bar,
    .faq-item,
    .cta-panel {
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--panel);
      box-shadow: var(--shadow);
      backdrop-filter: blur(16px);
    }

    .hero-panel {
      padding: 34px;
      min-height: 440px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      overflow: hidden;
      position: relative;
    }

    .hero-panel::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(120deg, rgba(84, 231, 255, 0.14), transparent 36%, rgba(255, 255, 255, 0.04));
      pointer-events: none;
    }

    .hero-content {
      position: relative;
      z-index: 1;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 5px 10px;
      border: 1px solid var(--line-strong);
      border-radius: 999px;
      color: var(--cyan-2);
      background: rgba(84, 231, 255, 0.08);
      font-size: 13px;
      font-weight: 700;
      margin-bottom: 18px;
    }

    h1 {
      margin: 0 0 18px;
      max-width: 820px;
      font-size: clamp(34px, 5vw, 62px);
      line-height: 1.08;
      letter-spacing: 0;
      font-weight: 900;
    }

    .hero-lead {
      max-width: 720px;
      margin: 0;
      color: var(--silver);
      font-size: 17px;
    }

    .hero-actions,
    .section-actions,
    .card-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
      margin-top: 26px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 11px 18px;
      border-radius: var(--radius);
      border: 1px solid var(--line-strong);
      color: var(--text);
      font-weight: 800;
      background: rgba(255, 255, 255, 0.055);
      transition: transform var(--ease), box-shadow var(--ease), background var(--ease), border-color var(--ease);
    }

    .btn.primary {
      color: #02111b;
      background: linear-gradient(135deg, var(--cyan), #d7fbff);
      border-color: rgba(255, 255, 255, 0.76);
      box-shadow: var(--glow);
    }

    .btn:hover {
      transform: translateY(-1px);
      border-color: var(--cyan-2);
      box-shadow: 0 0 20px rgba(84, 231, 255, 0.18);
    }

    .btn.primary:hover {
      box-shadow: 0 0 30px rgba(84, 231, 255, 0.38);
    }

    .hero-meta {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      margin-top: 30px;
    }

    .meta-chip {
      padding: 12px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255, 255, 255, 0.035);
    }

    .meta-chip strong {
      display: block;
      color: var(--cyan-2);
      font-size: 18px;
      line-height: 1.2;
    }

    .meta-chip span {
      color: var(--muted);
      font-size: 12px;
    }

    .rank-panel {
      padding: 24px;
      background:
        linear-gradient(180deg, rgba(9, 24, 43, 0.92), rgba(6, 15, 29, 0.82)),
        radial-gradient(circle at top right, rgba(84, 231, 255, 0.16), transparent 48%);
    }

    .panel-title-row {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      align-items: center;
      margin-bottom: 16px;
    }

    .panel-title-row h2,
    .section-head h2 {
      margin: 0;
      line-height: 1.18;
      font-size: clamp(24px, 3vw, 34px);
      font-weight: 850;
    }

    .small-note {
      color: var(--muted);
      font-size: 13px;
      white-space: nowrap;
    }

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

    .rank-item {
      display: grid;
      grid-template-columns: 34px 1fr auto;
      gap: 12px;
      align-items: center;
      padding: 14px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255, 255, 255, 0.045);
    }

    .rank-no {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      border-radius: var(--radius);
      background: rgba(84, 231, 255, 0.1);
      color: var(--cyan-2);
      font-weight: 900;
    }

    .rank-item h3 {
      margin: 0 0 2px;
      font-size: 16px;
      font-weight: 800;
    }

    .rank-item p {
      margin: 0;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.5;
    }

    .rank-score {
      color: var(--success);
      font-weight: 850;
      font-size: 14px;
    }

    .section {
      padding: 58px 0;
      border-bottom: 1px solid rgba(136, 202, 255, 0.1);
    }

    .section-head {
      max-width: 850px;
      margin-bottom: 24px;
    }

    .section-head p {
      margin: 10px 0 0;
      color: var(--muted);
      font-size: 16px;
    }

    .filter-bar {
      padding: 18px;
      margin-bottom: 22px;
      display: grid;
      grid-template-columns: minmax(220px, 1fr) auto auto;
      gap: 12px;
      align-items: center;
    }

    .search-box {
      position: relative;
    }

    .search-box i {
      position: absolute;
      left: 14px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--soft);
    }

    .search-box input {
      width: 100%;
      height: 46px;
      padding: 0 14px 0 40px;
      border-radius: var(--radius);
      border: 1px solid var(--line);
      color: var(--text);
      background: rgba(3, 11, 22, 0.72);
    }

    .segmented,
    .tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .seg-btn,
    .tag {
      min-height: 36px;
      padding: 7px 12px;
      border: 1px solid var(--line);
      border-radius: 999px;
      color: var(--muted);
      background: rgba(255, 255, 255, 0.04);
      font-weight: 700;
      font-size: 13px;
    }

    .seg-btn.active,
    .tag.active,
    .seg-btn:hover,
    .tag:hover {
      color: var(--text);
      border-color: var(--line-strong);
      background: rgba(84, 231, 255, 0.12);
    }

    .content-grid {
      display: grid;
      grid-template-columns: repeat(12, 1fr);
      gap: 16px;
    }

    .content-card {
      grid-column: span 4;
      min-height: 250px;
      padding: 20px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: linear-gradient(180deg, rgba(16, 38, 68, 0.78), rgba(8, 18, 34, 0.72));
      transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
      overflow: hidden;
      position: relative;
    }

    .content-card::after {
      content: "";
      position: absolute;
      inset: auto 0 0;
      height: 3px;
      background: linear-gradient(90deg, var(--cyan), transparent);
      opacity: 0.6;
    }

    .content-card:hover {
      transform: translateY(-2px);
      border-color: var(--line-strong);
      box-shadow: var(--glow);
    }

    .content-card.wide {
      grid-column: span 6;
    }

    .card-top {
      position: relative;
      z-index: 1;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 5px 9px;
      border-radius: 999px;
      color: var(--cyan-2);
      background: rgba(84, 231, 255, 0.1);
      border: 1px solid rgba(84, 231, 255, 0.22);
      font-size: 12px;
      font-weight: 800;
      margin-bottom: 14px;
    }

    .content-card h3 {
      margin: 0 0 10px;
      font-size: 19px;
      line-height: 1.35;
      font-weight: 850;
    }

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

    .mini-list {
      margin: 16px 0 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 9px;
      color: var(--silver);
      font-size: 14px;
    }

    .mini-list li {
      display: flex;
      gap: 9px;
      align-items: flex-start;
    }

    .mini-list i {
      margin-top: 6px;
      color: var(--cyan);
      font-size: 10px;
    }

    .state-strip {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 14px;
      margin-top: 22px;
    }

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

    .state-card strong {
      display: block;
      color: var(--text);
      font-size: 18px;
      margin-bottom: 4px;
    }

    .state-card span {
      color: var(--muted);
      font-size: 13px;
    }

    .steps {
      display: grid;
      grid-template-columns: 0.82fr 1.18fr;
      gap: 18px;
      align-items: start;
    }

    .timeline {
      display: grid;
      gap: 12px;
    }

    .step-item {
      display: grid;
      grid-template-columns: 46px 1fr;
      gap: 14px;
      padding: 16px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255, 255, 255, 0.04);
    }

    .step-no {
      width: 46px;
      height: 46px;
      display: grid;
      place-items: center;
      border-radius: var(--radius);
      color: var(--cyan-2);
      border: 1px solid var(--line-strong);
      background: rgba(84, 231, 255, 0.08);
      font-weight: 900;
    }

    .step-item h3 {
      margin: 0 0 5px;
      font-size: 17px;
      font-weight: 820;
    }

    .step-item p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .info-panel {
      padding: 22px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--panel-strong);
    }

    .info-panel h3 {
      margin: 0 0 12px;
      font-size: 22px;
      font-weight: 850;
    }

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

    .empty-state {
      display: none;
      padding: 28px;
      text-align: center;
      border: 1px dashed var(--line-strong);
      border-radius: var(--radius);
      color: var(--muted);
      background: rgba(84, 231, 255, 0.045);
    }

    .empty-state i {
      display: block;
      color: var(--cyan);
      font-size: 28px;
      margin-bottom: 10px;
    }

    .load-area {
      margin-top: 22px;
      text-align: center;
    }

    .faq-list {
      display: grid;
      gap: 12px;
    }

    .faq-item {
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      min-height: 58px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 18px;
      padding: 16px 18px;
      border: 0;
      color: var(--text);
      background: transparent;
      text-align: left;
      font-weight: 820;
    }

    .faq-question i {
      color: var(--cyan);
      transition: transform var(--ease);
    }

    .faq-answer {
      display: none;
      padding: 0 18px 18px;
      color: var(--muted);
    }

    .faq-item.open .faq-answer {
      display: block;
    }

    .faq-item.open .faq-question i {
      transform: rotate(180deg);
    }

    .cta-panel {
      padding: 30px;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 20px;
      align-items: center;
      background:
        linear-gradient(135deg, rgba(84, 231, 255, 0.13), rgba(255, 255, 255, 0.035)),
        rgba(10, 24, 44, 0.84);
    }

    .cta-panel h2 {
      margin: 0 0 8px;
      font-size: clamp(24px, 3vw, 36px);
      font-weight: 900;
    }

    .cta-panel p {
      margin: 0;
      color: var(--muted);
    }

    .site-footer {
      padding: 42px 0 26px;
      background: rgba(3, 10, 20, 0.72);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.3fr 0.7fr 1fr;
      gap: 24px;
      padding-bottom: 24px;
      border-bottom: 1px solid var(--line);
    }

    .footer-title {
      color: var(--text);
      font-weight: 850;
      margin-bottom: 10px;
    }

    .footer-text {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .footer-links {
      display: grid;
      gap: 8px;
    }

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

    .footer-links a:hover {
      color: var(--cyan-2);
    }

    .copyright {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      padding-top: 18px;
      color: var(--soft);
      font-size: 13px;
    }

    @media (max-width: 1024px) {
      :root {
        --sidebar: 232px;
      }

      .hero-layout,
      .steps,
      .cta-panel {
        grid-template-columns: 1fr;
      }

      .content-card,
      .content-card.wide {
        grid-column: span 6;
      }

      .filter-bar {
        grid-template-columns: 1fr;
      }

      .small-note {
        white-space: normal;
      }
    }

    @media (max-width: 768px) {
      .app-shell {
        display: block;
      }

      .mobile-topbar {
        display: flex;
      }

      .sidebar {
        transform: translateX(-105%);
        transition: transform var(--ease);
        width: min(84vw, 300px);
      }

      body.nav-open .sidebar {
        transform: translateX(0);
      }

      .main-area {
        margin-left: 0;
      }

      .page-inner {
        width: min(100% - 32px, 680px);
      }

      .hero {
        padding-top: 28px;
      }

      .hero-panel {
        min-height: auto;
        padding: 24px;
      }

      .hero-meta,
      .state-strip,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .content-card,
      .content-card.wide {
        grid-column: span 12;
      }

      .copyright {
        flex-direction: column;
      }

      .sidebar-status {
        position: static;
        margin-top: 18px;
      }
    }

    @media (max-width: 520px) {
      h1 {
        font-size: 32px;
      }

      .hero-actions,
      .section-actions,
      .card-actions,
      .segmented,
      .tag-row {
        align-items: stretch;
      }

      .btn,
      .seg-btn,
      .tag {
        width: 100%;
      }

      .rank-item {
        grid-template-columns: 34px 1fr;
      }

      .rank-score {
        grid-column: 2;
      }

      .panel-title-row {
        align-items: flex-start;
        flex-direction: column;
      }
    }