/* roulang page: index */
:root {
      --bg-dark: #0E0F12;
      --bg-card: #16181D;
      --bg-elevated: #1C1F26;
      --primary: #E52E53;
      --primary-hover: #F04366;
      --accent-gold: #D8B468;
      --titanium: #2A2D35;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --border-focus: rgba(229, 46, 83, 0.4);
      --text-main: #F2F4F8;
      --text-muted: #8A909E;
      --text-dim: #5C6270;
      --radius: 6px;
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      font-size: 16px;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }
    a:hover {
      color: var(--primary);
    }

    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 72px;
      background: rgba(14, 15, 18, 0.82);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-subtle);
      z-index: 1000;
      display: flex;
      align-items: center;
    }
    .header-inner {
      max-width: 1280px;
      margin: 0 auto;
      width: 100%;
      padding: 0 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.2rem;
      font-weight: 700;
      letter-spacing: 0.04em;
      color: var(--text-main);
    }
    .brand-logo svg {
      width: 28px;
      height: 28px;
      fill: var(--primary);
    }
    .brand-logo span {
      background: linear-gradient(135deg, #FFF 20%, var(--accent-gold) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .btn-capsule {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 8px 22px;
      border-radius: 999px;
      font-size: 0.875rem;
      font-weight: 600;
      background: var(--primary);
      color: #FFF;
      border: 1px solid rgba(255, 255, 255, 0.15);
      transition: var(--transition);
      cursor: pointer;
    }
    .btn-capsule:hover {
      background: var(--primary-hover);
      color: #FFF;
      transform: translateY(-1px);
      box-shadow: 0 6px 20px rgba(229, 46, 83, 0.35);
    }
    .hamburger-trigger {
      display: flex;
      flex-direction: column;
      justify-content: center;
      gap: 5px;
      width: 40px;
      height: 40px;
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: 6px;
      padding: 9px 8px;
      cursor: pointer;
      transition: var(--transition);
    }
    .hamburger-trigger:hover {
      border-color: var(--primary);
    }
    .hamburger-trigger span {
      display: block;
      width: 100%;
      height: 2px;
      background: var(--text-main);
      border-radius: 2px;
      transition: var(--transition);
    }

    .drawer-overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100vh;
      background: rgba(0, 0, 0, 0.65);
      backdrop-filter: blur(6px);
      z-index: 1050;
      opacity: 0;
      pointer-events: none;
      transition: var(--transition);
    }
    .drawer-overlay.active {
      opacity: 1;
      pointer-events: auto;
    }
    .drawer-panel {
      position: fixed;
      top: 0;
      right: -100%;
      width: 100%;
      max-width: 440px;
      height: 100vh;
      background: var(--bg-dark);
      border-left: 1px solid var(--border-subtle);
      z-index: 1100;
      padding: 32px 36px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
      box-shadow: -15px 0 40px rgba(0, 0, 0, 0.7);
    }
    .drawer-panel.active {
      right: 0;
    }
    .drawer-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding-bottom: 24px;
      border-bottom: 1px solid var(--border-subtle);
    }
    .drawer-close {
      width: 36px;
      height: 36px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      color: var(--text-muted);
      border-radius: 6px;
      border: 1px solid var(--border-subtle);
      cursor: pointer;
      transition: var(--transition);
    }
    .drawer-close:hover {
      color: var(--primary);
      border-color: var(--primary);
    }
    .drawer-nav {
      margin-top: 36px;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .drawer-nav-item {
      font-size: 1.45rem;
      font-weight: 700;
      letter-spacing: -0.01em;
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 10px 0;
      border-bottom: 1px dashed rgba(255, 255, 255, 0.06);
    }
    .drawer-nav-item.active,
    .drawer-nav-item:hover {
      color: var(--primary);
    }
    .drawer-tags {
      margin-top: 30px;
    }
    .drawer-tags-title {
      font-size: 0.8rem;
      text-transform: uppercase;
      letter-spacing: 0.15em;
      color: var(--text-dim);
      margin-bottom: 14px;
    }
    .tag-cloud-mini {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .tag-pill-mini {
      font-size: 0.8rem;
      padding: 6px 12px;
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: 4px;
      color: var(--text-muted);
    }
    .tag-pill-mini:hover {
      border-color: var(--accent-gold);
      color: var(--accent-gold);
    }
    .drawer-footer {
      padding-top: 24px;
      border-top: 1px solid var(--border-subtle);
      font-size: 0.8rem;
      color: var(--text-dim);
    }

    main {
      padding-top: 72px;
    }
    .section-wrap {
      padding: 90px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
      position: relative;
    }
    .section-wrap.alt-bg {
      background-color: var(--bg-card);
    }
    .grid-container {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }
    .section-head {
      margin-bottom: 50px;
    }
    .section-subtitle {
      font-size: 0.82rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.18em;
      color: var(--accent-gold);
      display: inline-block;
      margin-bottom: 10px;
    }
    .section-title {
      font-size: 2.25rem;
      font-weight: 700;
      letter-spacing: -0.03em;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 14px;
    }
    .section-desc {
      font-size: 1rem;
      line-height: 1.8;
      color: var(--text-muted);
      max-width: 820px;
    }

    .hero-banner {
      background: #180D11;
      border-bottom: 1px solid rgba(229, 46, 83, 0.25);
      padding: 14px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
    }
    .hero-banner-text {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.875rem;
      color: #FFB3C2;
    }
    .flash-tag {
      background: var(--primary);
      color: #FFF;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: 3px;
      text-transform: uppercase;
    }
    .hero-countdown {
      display: flex;
      align-items: center;
      gap: 8px;
      font-family: monospace;
      font-size: 0.95rem;
      color: var(--text-main);
    }
    .time-chip {
      background: #2D141C;
      border: 1px solid rgba(229, 46, 83, 0.4);
      padding: 4px 8px;
      border-radius: 4px;
      font-weight: 700;
      color: #FFF;
    }

    .hero-main-grid {
      padding: 70px 0 60px;
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 50px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 3rem;
      font-weight: 800;
      line-height: 1.18;
      letter-spacing: -0.04em;
      margin-bottom: 22px;
      color: #FFF;
    }
    .hero-h1 span {
      background: linear-gradient(135deg, #FFFFFF 0%, #E52E53 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-intro {
      font-size: 1.05rem;
      line-height: 1.85;
      color: var(--text-muted);
      margin-bottom: 34px;
    }
    .hero-cta-group {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 40px;
    }
    .btn-solid {
      background: var(--primary);
      color: #FFF;
      padding: 14px 34px;
      border-radius: var(--radius);
      font-size: 1rem;
      font-weight: 600;
      border: 1px solid rgba(255, 255, 255, 0.15);
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      gap: 10px;
    }
    .btn-solid:hover {
      background: var(--primary-hover);
      color: #FFF;
      transform: translateY(-2px);
      box-shadow: 0 10px 30px rgba(229, 46, 83, 0.4);
    }
    .btn-outline {
      background: transparent;
      color: var(--text-main);
      padding: 14px 28px;
      border-radius: var(--radius);
      font-size: 1rem;
      font-weight: 600;
      border: 1px solid var(--border-subtle);
      transition: var(--transition);
    }
    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.05);
      border-color: rgba(255, 255, 255, 0.25);
      color: #FFF;
    }

    .hero-metrics-board {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius);
      padding: 30px;
      position: relative;
    }
    .board-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 24px;
      padding-bottom: 16px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .board-title {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--accent-gold);
      letter-spacing: 0.08em;
      text-transform: uppercase;
    }
    .metrics-2x2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }
    .metric-cell {
      background: var(--bg-dark);
      border: 1px solid var(--border-subtle);
      border-radius: 4px;
      padding: 18px;
      transition: var(--transition);
    }
    .metric-cell:hover {
      border-color: var(--border-focus);
      transform: translateY(-3px);
    }
    .metric-num {
      font-size: 2.2rem;
      font-weight: 800;
      font-family: monospace;
      color: var(--text-main);
      line-height: 1.1;
      margin-bottom: 6px;
    }
    .metric-num span {
      font-size: 1rem;
      color: var(--primary);
    }
    .metric-lbl {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .stream-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
    }
    .stream-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
      position: relative;
    }
    .stream-card:hover {
      border-color: var(--border-focus);
      transform: translateY(-4px);
    }
    .stream-thumb {
      width: 100%;
      aspect-ratio: 16 / 9;
      background: #191C22;
      position: relative;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .stream-thumb-svg {
      width: 48px;
      height: 48px;
      fill: rgba(255, 255, 255, 0.15);
      transition: var(--transition);
    }
    .stream-card:hover .stream-thumb-svg {
      fill: var(--primary);
      transform: scale(1.1);
    }
    .badge-time {
      position: absolute;
      bottom: 10px;
      right: 10px;
      background: rgba(0, 0, 0, 0.78);
      color: #FFF;
      font-size: 0.72rem;
      font-family: monospace;
      padding: 3px 7px;
      border-radius: 3px;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .badge-res {
      position: absolute;
      top: 10px;
      left: 10px;
      background: var(--primary);
      color: #FFF;
      font-size: 0.68rem;
      font-weight: 700;
      padding: 2px 6px;
      border-radius: 3px;
      letter-spacing: 0.05em;
    }
    .stream-bar {
      width: 100%;
      height: 3px;
      background: #252830;
      position: relative;
    }
    .stream-prog {
      height: 100%;
      background: var(--primary);
    }
    .stream-info {
      padding: 16px 18px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .stream-title {
      font-size: 0.98rem;
      font-weight: 600;
      line-height: 1.45;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .stream-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.78rem;
      color: var(--text-dim);
    }

    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .matrix-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius);
      padding: 30px 26px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .matrix-card:hover {
      border-color: var(--border-focus);
      transform: translateY(-3px);
    }
    .matrix-icon-wrap {
      width: 50px;
      height: 50px;
      background: rgba(229, 46, 83, 0.08);
      border: 1px solid rgba(229, 46, 83, 0.25);
      border-radius: 8px;
      display: flex;
      align-items:center;
      justify-content: center;
      margin-bottom: 22px;
      color: var(--primary);
    }
    .matrix-icon-wrap svg {
      width: 24px;
      height: 24px;
      fill: currentColor;
    }
    .matrix-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .matrix-text {
      font-size: 0.92rem;
      line-height: 1.75;
      color: var(--text-muted);
    }

    .compare-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
    }
    .compare-col {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius);
      padding: 34px;
      position: relative;
    }
    .compare-col.highlight {
      background: #151114;
      border-color: rgba(229, 46, 83, 0.45);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
    }
    .compare-head {
      padding-bottom: 20px;
      margin-bottom: 24px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .compare-col-title {
      font-size: 1.3rem;
      font-weight: 700;
    }
    .compare-tag {
      font-size: 0.75rem;
      padding: 3px 10px;
      border-radius: 999px;
      font-weight: 600;
    }
    .compare-tag.def {
      background: #252830;
      color: var(--text-muted);
    }
    .compare-tag.prim {
      background: var(--primary);
      color: #FFF;
    }
    .compare-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .compare-item {
      display: flex;
      gap: 16px;
      align-items: flex-start;
    }
    .compare-icon {
      flex-shrink: 0;
      width: 22px;
      height: 22px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.8rem;
      font-weight: 800;
      margin-top: 2px;
    }
    .compare-icon.no {
      background: #2D1A1F;
      color: #E55C72;
    }
    .compare-icon.yes {
      background: #1C3325;
      color: #38D976;
    }
    .compare-item-body strong {
      display: block;
      font-size: 0.95rem;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .compare-item-body p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    .timeline-wrap {
      position: relative;
      max-width: 980px;
      margin: 0 auto;
      padding: 30px 0;
    }
    .timeline-wrap::before {
      content: "";
      position: absolute;
      top: 0;
      bottom: 0;
      left: 50%;
      width: 2px;
      background: linear-gradient(180deg, rgba(229,46,83,0.1) 0%, rgba(229,46,83,0.8) 50%, rgba(229,46,83,0.1) 100%);
      transform: translateX(-50%);
    }
    .timeline-node {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
      margin-bottom: 50px;
      position: relative;
    }
    .timeline-node:nth-child(even) .timeline-content {
      grid-column: 2;
      text-align: left;
    }
    .timeline-node:nth-child(even) .timeline-date {
      grid-column: 1;
      grid-row: 1;
      text-align: right;
    }
    .timeline-node:nth-child(odd) .timeline-content {
      text-align: right;
    }
    .timeline-node:nth-child(odd) .timeline-date {
      text-align: left;
    }
    .timeline-content {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius);
      padding: 24px 28px;
      transition: var(--transition);
    }
    .timeline-content:hover {
      border-color: var(--accent-gold);
      transform: translateY(-2px);
    }
    .timeline-date {
      font-family: monospace;
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--accent-gold);
      letter-spacing: 0.08em;
    }
    .timeline-dot {
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%, -50%);
      width: 14px;
      height: 14px;
      background: var(--primary);
      border: 3px solid var(--bg-dark);
      border-radius: 50%;
      box-shadow: 0 0 12px var(--primary);
      z-index: 2;
    }

    .gateway-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
    }
    .gateway-card {
      position: relative;
      background: #14171E;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius);
      padding: 44px 38px;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      min-height: 280px;
      transition: var(--transition);
    }
    .gateway-card:hover {
      border-color: var(--primary);
      transform: translateY(-3px);
    }
    .gateway-card::before {
      content: "";
      position: absolute;
      top: -30%;
      right: -30%;
      width: 260px;
      height: 260px;
      background: radial-gradient(circle, rgba(229, 46, 83, 0.12) 0%, transparent 70%);
      pointer-events: none;
    }
    .gateway-head {
      margin-bottom: 20px;
    }
    .gateway-pill {
      font-size: 0.75rem;
      text-transform: uppercase;
      color: var(--accent-gold);
      letter-spacing: 0.12em;
      margin-bottom: 8px;
      display: block;
    }
    .gateway-name {
      font-size: 1.7rem;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 12px;
    }
    .gateway-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.75;
      max-width: 440px;
    }
    .gateway-link-btn {
      align-self: flex-start;
      margin-top: 24px;
      padding: 10px 24px;
      font-size: 0.9rem;
      font-weight: 600;
      color: #FFF;
      background: #232732;
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: var(--transition);
    }
    .gateway-card:hover .gateway-link-btn {
      background: var(--primary);
      border-color: var(--primary);
    }

    .editorial-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      align-items: stretch;
    }
    .editorial-lead {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius);
      padding: 34px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .lead-tag {
      font-size: 0.78rem;
      font-weight: 600;
      color: var(--primary);
      letter-spacing: 0.1em;
      margin-bottom: 14px;
      text-transform: uppercase;
    }
    .lead-title {
      font-size: 1.55rem;
      font-weight: 700;
      line-height: 1.35;
      color: var(--text-main);
      margin-bottom: 18px;
    }
    .lead-text {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .editorial-list {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .editorial-item {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius);
      padding: 22px 26px;
      transition: var(--transition);
    }
    .editorial-item:hover {
      border-color: rgba(255, 255, 255, 0.2);
      transform: translateX(4px);
    }
    .editorial-item-title {
      font-size: 1.05rem;
      font-weight: 600;
      margin-bottom: 8px;
      line-height: 1.4;
    }
    .editorial-item-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .trust-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .trust-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius);
      padding: 26px 20px;
      text-align: center;
      transition: var(--transition);
    }
    .trust-card:hover {
      border-color: var(--accent-gold);
      transform: translateY(-3px);
    }
    .trust-icon {
      width: 44px;
      height: 44px;
      margin: 0 auto 16px;
      border-radius: 50%;
      background: rgba(216, 180, 104, 0.1);
      border: 1px solid rgba(216, 180, 104, 0.3);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent-gold);
    }
    .trust-icon svg {
      width: 22px;
      height: 22px;
      fill: currentColor;
    }
    .trust-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .trust-desc {
      font-size: 0.82rem;
      line-height: 1.65;
      color: var(--text-muted);
    }

    .console-board {
      background: #090A0D;
      border: 1px solid #1E222B;
      border-radius: var(--radius);
      padding: 28px 32px;
      font-family: monospace;
    }
    .console-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding-bottom: 18px;
      border-bottom: 1px solid #191C24;
      margin-bottom: 24px;
    }
    .console-status {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.85rem;
      color: #38D976;
    }
    .pulse-dot {
      width: 8px;
      height: 8px;
      background: #38D976;
      border-radius: 50%;
      box-shadow: 0 0 10px #38D976;
      animation: pulse 1.8s infinite;
    }
    @keyframes pulse {
      0% { opacity: 0.4; transform: scale(0.9); }
      50% { opacity: 1; transform: scale(1.15); }
      100% { opacity: 0.4; transform: scale(0.9); }
    }
    .console-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .console-item {
      background: #111319;
      border: 1px solid #1C202A;
      border-radius: 4px;
      padding: 16px;
    }
    .console-metric {
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .console-label {
      font-size: 0.78rem;
      color: var(--text-dim);
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }

    .qa-accordion-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }
    .qa-item {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius);
      padding: 22px 24px;
      transition: var(--transition);
    }
    .qa-item:hover {
      border-color: rgba(255, 255, 255, 0.16);
    }
    .qa-q {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .qa-q-mark {
      color: var(--primary);
      font-family: monospace;
      font-size: 1.1rem;
    }
    .qa-a {
      font-size: 0.9rem;
      line-height: 1.75;
      color: var(--text-muted);
    }

    .extended-faq-wrap {
      max-width: 880px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-collapse-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius);
      padding: 24px 28px;
    }
    .faq-collapse-title {
      font-size: 1.12rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .faq-collapse-desc {
      font-size: 0.92rem;
      line-height: 1.8;
      color: var(--text-muted);
    }

    .convert-hub-box {
      background: linear-gradient(180deg, #1A1318 0%, #111318 100%);
      border: 1px solid rgba(229, 46, 83, 0.35);
      border-radius: 8px;
      padding: 56px 40px;
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
      box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
    }
    .convert-hub-box .section-title {
      font-size: 2.1rem;
      margin-bottom: 16px;
    }
    .convert-hub-box .section-desc {
      margin: 0 auto 34px;
    }
    .form-inline-center {
      display: flex;
      max-width: 540px;
      margin: 0 auto;
      gap: 10px;
    }
    .form-inline-center input {
      flex-grow: 1;
      height: 48px;
      background: #0A0C0F;
      border: 1px solid rgba(255, 255, 255, 0.14);
      border-radius: var(--radius);
      padding: 0 18px;
      font-size: 0.95rem;
      color: #FFF;
      outline: none;
      transition: var(--transition);
      margin-bottom: 0;
    }
    .form-inline-center input:focus {
      border-color: var(--primary);
      box-shadow: 0 0 12px rgba(229, 46, 83, 0.25);
    }
    .btn-shimmer {
      position: relative;
      overflow: hidden;
      height: 48px;
      padding: 0 32px;
      font-weight: 700;
      white-space: nowrap;
    }
    .btn-shimmer::after {
      content: "";
      position: absolute;
      top: -50%;
      left: -60%;
      width: 40%;
      height: 200%;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,0.35), transparent);
      transform: rotate(30deg);
      animation: shimmer 3.5s infinite;
    }
    @keyframes shimmer {
      0% { left: -60%; }
      35% { left: 140%; }
      100% { left: 140%; }
    }

    .seal-strip {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      text-align: left;
    }
    .seal-item {
      display: flex;
      align-items: center;
      gap: 18px;
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius);
      padding: 20px 24px;
    }
    .seal-icon {
      width: 42px;
      height: 42px;
      border-radius: 6px;
      background: #20242D;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent-gold);
      flex-shrink: 0;
    }
    .seal-icon svg {
      width: 20px;
      height: 20px;
      fill: currentColor;
    }
    .seal-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 2px;
    }
    .seal-sub {
      font-size: 0.8rem;
      color: var(--text-dim);
    }

    .site-footer {
      background: #07080A;
      border-top: 1px solid var(--border-subtle);
      padding: 60px 0 40px;
      font-size: 0.88rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-desc {
      color: var(--text-muted);
      line-height: 1.8;
      max-width: 440px;
      margin-top: 14px;
      font-size: 0.85rem;
    }
    .footer-col-title {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 18px;
      text-transform: uppercase;
      letter-spacing: 0.1em;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a {
      color: var(--text-muted);
    }
    .footer-links a:hover {
      color: var(--primary);
    }
    .footer-bottom {
      padding-top: 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      display: flex;
      align-items: center;
      justify-content: space-between;
      color: var(--text-dim);
      font-size: 0.8rem;
      flex-wrap: wrap;
      gap: 16px;
    }

    @media (max-width: 1023px) {
      .hero-main-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .stream-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .matrix-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .trust-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .timeline-wrap::before {
        left: 20px;
      }
      .timeline-node {
        grid-template-columns: 1fr;
        gap: 16px;
        padding-left: 48px;
      }
      .timeline-node:nth-child(even) .timeline-content,
      .timeline-node:nth-child(odd) .timeline-content {
        grid-column: 1;
        text-align: left;
      }
      .timeline-node:nth-child(even) .timeline-date,
      .timeline-node:nth-child(odd) .timeline-date {
        grid-column: 1;
        grid-row: auto;
        text-align: left;
      }
      .timeline-dot {
        left: 20px;
      }
    }

    @media (max-width: 639px) {
      .hero-h1 {
        font-size: 2.1rem;
      }
      .section-title {
        font-size: 1.7rem;
      }
      .stream-grid {
        grid-template-columns: 1fr;
      }
      .matrix-grid {
        grid-template-columns: 1fr;
      }
      .compare-container {
        grid-template-columns: 1fr;
      }
      .gateway-grid {
        grid-template-columns: 1fr;
      }
      .editorial-grid {
        grid-template-columns: 1fr;
      }
      .console-grid {
        grid-template-columns: 1fr;
      }
      .qa-accordion-grid {
        grid-template-columns: 1fr;
      }
      .seal-strip {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
      }
      .form-inline-center {
        flex-direction: column;
      }
      .btn-shimmer {
        width: 100%;
      }
    }

/* roulang page: category1 */
:root {
            --bg-dark: #0E0F12;
            --bg-card: #16181D;
            --bg-elevated: #1C1F26;
            --primary: #E52E53;
            --primary-hover: #F04366;
            --accent-gold: #D8B468;
            --titanium: #2A2D35;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-focus: rgba(229, 46, 83, 0.4);
            --text-main: #F2F4F8;
            --text-muted: #8A909E;
            --text-dim: #5C6270;
            --radius: 6px;
            --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            background-color: var(--bg-dark);
            color: var(--text-main);
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

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

        /* 顶栏架构 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 72px;
            background: rgba(14, 15, 18, 0.82);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-subtle);
            z-index: 1000;
            display: flex;
            align-items: center;
        }

        .header-inner {
            max-width: 1280px;
            margin: 0 auto;
            width: 100%;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.2rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            color: var(--text-main);
        }

        .brand-logo svg {
            width: 28px;
            height: 28px;
            fill: var(--primary);
            flex-shrink: 0;
        }

        .brand-logo span {
            background: linear-gradient(135deg, #FFF 20%, var(--accent-gold) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .btn-capsule {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 8px 22px;
            border-radius: 999px;
            font-size: 0.875rem;
            font-weight: 600;
            background: var(--primary);
            color: #FFF;
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-capsule:hover {
            background: var(--primary-hover);
            color: #FFF;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(229, 46, 83, 0.35);
        }

        .hamburger-trigger {
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: 6px;
            padding: 9px 8px;
            cursor: pointer;
            transition: var(--transition);
        }

        .hamburger-trigger:hover {
            border-color: var(--primary);
        }

        .hamburger-trigger span {
            display: block;
            width: 100%;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* 侧滑抽屉面板 */
        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: rgba(0, 0, 0, 0.65);
            backdrop-filter: blur(6px);
            z-index: 1050;
            opacity: 0;
            pointer-events: none;
            transition: var(--transition);
        }

        .drawer-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        .drawer-panel {
            position: fixed;
            top: 0;
            right: -100%;
            width: 100%;
            max-width: 440px;
            height: 100vh;
            background: var(--bg-dark);
            border-left: 1px solid var(--border-subtle);
            z-index: 1100;
            padding: 32px 36px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: -15px 0 40px rgba(0, 0, 0, 0.7);
        }

        .drawer-panel.active {
            right: 0;
        }

        .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border-subtle);
        }

        .drawer-close {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--text-muted);
            border-radius: 6px;
            border: 1px solid var(--border-subtle);
            cursor: pointer;
            transition: var(--transition);
        }

        .drawer-close:hover {
            color: var(--primary);
            border-color: var(--primary);
        }

        .drawer-nav {
            margin-top: 36px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .drawer-nav-item {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-main);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px dashed rgba(255, 255, 255, 0.06);
        }

        .drawer-nav-item.active,
        .drawer-nav-item:hover {
            color: var(--primary);
        }

        .drawer-nav-item span.indicator {
            font-size: 0.85rem;
            color: var(--text-dim);
            font-weight: 400;
        }

        .drawer-tags {
            margin-top: 30px;
        }

        .drawer-tags-title {
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.15em;
            color: var(--text-dim);
            margin-bottom: 14px;
        }

        .tag-cloud-mini {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-pill-mini {
            font-size: 0.8rem;
            padding: 6px 12px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: 4px;
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
        }

        .tag-pill-mini:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
        }

        .drawer-footer {
            padding-top: 24px;
            border-top: 1px solid var(--border-subtle);
            font-size: 0.8rem;
            color: var(--text-dim);
        }

        /* 主体通用与板块容器 */
        main {
            padding-top: 72px;
        }

        .section-wrap {
            padding: 70px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            position: relative;
        }

        .section-wrap.alt-bg {
            background-color: var(--bg-card);
        }

        .grid-container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-head {
            margin-bottom: 38px;
        }

        .section-subtitle {
            font-size: 0.82rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.18em;
            color: var(--accent-gold);
            display: inline-block;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: var(--text-main);
            line-height: 1.3;
        }

        .section-desc {
            font-size: 0.95rem;
            color: var(--text-muted);
            max-width: 760px;
            margin-top: 10px;
            line-height: 1.7;
        }

        /* 板块 1: 分类专属标头 + 自测选型交互器 */
        .category-header-wrap {
            padding: 50px 0 45px;
            background: radial-gradient(circle at 50% 0%, rgba(229, 46, 83, 0.08) 0%, transparent 70%);
            border-bottom: 1px solid var(--border-subtle);
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-dim);
            margin-bottom: 20px;
        }

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

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

        .category-h1 {
            font-size: 2.5rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            line-height: 1.25;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .category-h1 span {
            color: var(--primary);
        }

        .category-summary {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 860px;
            line-height: 1.8;
            margin-bottom: 28px;
        }

        .category-stats-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            align-items: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .stat-badge {
            display: inline-flex;
            align-items: baseline;
            gap: 8px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            padding: 8px 16px;
            border-radius: var(--radius);
        }

        .stat-badge .stat-label {
            font-size: 0.8rem;
            color: var(--text-dim);
            text-transform: uppercase;
        }

        .stat-badge .stat-value {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.02em;
        }

        .stat-badge .stat-value.highlight {
            color: var(--accent-gold);
        }

        /* 自测选型交互组件 (融入标头下方) */
        .preset-quiz-box {
            margin-top: 28px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius);
            padding: 20px 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .quiz-intro {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .quiz-tag {
            font-size: 0.75rem;
            color: var(--accent-gold);
            font-weight: 700;
            letter-spacing: 0.1em;
            text-transform: uppercase;
        }

        .quiz-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-main);
        }

        .quiz-options {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .quiz-opt-btn {
            background: var(--bg-elevated);
            border: 1px solid var(--border-subtle);
            color: var(--text-muted);
            font-size: 0.82rem;
            padding: 6px 14px;
            border-radius: 4px;
            cursor: pointer;
            transition: var(--transition);
        }

        .quiz-opt-btn.active,
        .quiz-opt-btn:hover {
            border-color: var(--primary);
            color: #FFF;
            background: rgba(229, 46, 83, 0.15);
        }

        .quiz-result-preview {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 6px 14px;
            background: rgba(0, 0, 0, 0.4);
            border-radius: 4px;
            border: 1px dashed rgba(255, 255, 255, 0.12);
        }

        .preview-text {
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .preview-text strong {
            color: var(--primary);
            margin: 0 4px;
        }

        /* 板块 2: 多维属性筛选矩阵 */
        .filter-section {
            padding: 24px 0;
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-subtle);
        }

        .filter-group-row {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 8px 0;
        }

        .filter-label {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-dim);
            min-width: 80px;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .filter-pills {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            flex: 1;
        }

        .filter-pill {
            font-size: 0.82rem;
            padding: 5px 14px;
            border-radius: 4px;
            background: var(--bg-dark);
            color: var(--text-muted);
            border: 1px solid var(--border-subtle);
            cursor: pointer;
            transition: var(--transition);
        }

        .filter-pill.active {
            background: var(--primary);
            color: #FFF;
            border-color: var(--primary);
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(229, 46, 83, 0.3);
        }

        .filter-pill:hover:not(.active) {
            border-color: var(--border-focus);
            color: var(--text-main);
        }

        /* 板块 3: 精选内容主列表 */
        .content-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            margin-bottom: 24px;
            display: flex;
            flex-direction: column;
            height: calc(100% - 24px);
        }

        .content-card:hover {
            transform: translateY(-3px);
            border-color: var(--border-focus);
            box-shadow: 0 10px 24px rgba(0, 0, 0, 0.5);
        }

        .thumb-box {
            position: relative;
            width: 100%;
            padding-top: 56.25%; /* 16:9 ratio */
            background: var(--bg-elevated);
            overflow: hidden;
        }

        .thumb-box svg.placeholder-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .content-card:hover .thumb-box svg.placeholder-bg {
            transform: scale(1.04);
        }

        .duration-badge {
            position: absolute;
            bottom: 10px;
            right: 10px;
            background: rgba(14, 15, 18, 0.85);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 8px;
            border-radius: 3px;
            color: #FFF;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .format-tag {
            position: absolute;
            top: 10px;
            left: 10px;
            background: rgba(229, 46, 83, 0.85);
            font-size: 0.7rem;
            font-weight: 700;
            padding: 2px 6px;
            border-radius: 2px;
            color: #FFF;
            letter-spacing: 0.05em;
        }

        .card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
            justify-content: space-between;
        }

        .card-meta-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.78rem;
            color: var(--text-dim);
            margin-bottom: 8px;
        }

        .card-meta-top .tag-text {
            color: var(--accent-gold);
            font-weight: 600;
        }

        .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.45;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: var(--transition);
        }

        .content-card:hover .card-title {
            color: var(--primary);
        }

        .card-footer-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.78rem;
            color: var(--text-muted);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 12px;
            margin-top: 12px;
        }

        .load-more-wrap {
            text-align: center;
            padding-top: 24px;
        }

        .btn-load-more {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 36px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: 999px;
            color: var(--text-main);
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-load-more:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--bg-elevated);
            transform: translateY(-2px);
        }

        /* 板块 4: 编辑推荐精选专栏 */
        .spotlight-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            margin-bottom: 24px;
            height: calc(100% - 24px);
            display: flex;
            flex-direction: column;
        }

        .spotlight-card:hover {
            border-color: var(--accent-gold);
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.6);
        }

        .spotlight-inner {
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        @media (min-width: 1024px) {
            .spotlight-inner {
                flex-direction: row;
            }
            .spotlight-thumb {
                width: 45%;
                min-height: 240px;
            }
            .spotlight-content {
                width: 55%;
            }
        }

        .spotlight-thumb {
            position: relative;
            background: var(--bg-elevated);
            overflow: hidden;
            min-height: 180px;
        }

        .spotlight-thumb svg {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .spotlight-content {
            padding: 24px 28px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .spotlight-badge {
            font-size: 0.75rem;
            color: var(--accent-gold);
            font-weight: 700;
            letter-spacing: 0.1em;
            margin-bottom: 8px;
            text-transform: uppercase;
        }

        .spotlight-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .spotlight-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .spotlight-quote {
            border-left: 2px solid var(--accent-gold);
            padding-left: 12px;
            font-size: 0.82rem;
            color: var(--text-dim);
            font-style: italic;
        }

        /* 板块 5: 关联子分类标签云 */
        .topic-cloud-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .topic-cloud-item {
            display: inline-flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            padding: 10px 18px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: 6px;
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .topic-cloud-item span.count {
            font-size: 0.75rem;
            background: var(--bg-dark);
            color: var(--text-dim);
            padding: 2px 8px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        .topic-cloud-item:hover {
            background: var(--primary);
            color: #FFF;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .topic-cloud-item:hover span.count {
            background: rgba(0, 0, 0, 0.25);
            color: #FFF;
        }

        /* 板块 6: 规格解析与浏览指南 */
        .guide-box {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius);
            padding: 30px;
            height: 100%;
        }

        .guide-box-header {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 20px;
        }

        .guide-icon {
            width: 42px;
            height: 42px;
            background: rgba(229, 46, 83, 0.1);
            border: 1px solid rgba(229, 46, 83, 0.25);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .guide-icon svg {
            width: 20px;
            height: 20px;
            fill: var(--primary);
        }

        .guide-box-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-main);
        }

        .guide-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .guide-list-item {
            display: flex;
            gap: 12px;
            font-size: 0.9rem;
            line-height: 1.65;
            color: var(--text-muted);
        }

        .guide-list-item strong {
            color: var(--text-main);
            min-width: 85px;
        }

        /* 板块 7: 分类专属问答与反馈 */
        .faq-accordion {
            background: transparent;
            border: none;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.15);
        }

        .faq-toggle {
            width: 100%;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: transparent;
            border: none;
            color: var(--text-main);
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            text-align: left;
        }

        .faq-toggle span.icon-plus {
            font-size: 1.25rem;
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-item.active .faq-toggle span.icon-plus {
            transform: rotate(45deg);
        }

        .faq-content {
            display: none;
            padding: 0 24px 22px;
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.75;
            border-top: 1px solid rgba(255, 255, 255, 0.03);
            margin-top: -4px;
        }

        .faq-item.active .faq-content {
            display: block;
        }

        /* 页脚区域对齐 */
        .site-footer {
            background-color: #090A0C;
            border-top: 1px solid var(--border-subtle);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        @media (max-width: 1023px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 639px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        .footer-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-top: 14px;
            max-width: 320px;
        }

        .footer-title {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 18px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links li a {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .footer-links li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-dim);
        }

        @media (max-width: 639px) {
            .category-h1 {
                font-size: 1.85rem;
            }
            .filter-group-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .preset-quiz-box {
                flex-direction: column;
                align-items: flex-start;
            }
        }