/* CSS 全局变量：深海电光蓝 & 冰魄青 & 黑曜深邃渊 (Electric Sapphire & Ice Cyan Abyss) */
    :root {
      --primary: #e11d48;
      --primary-hover: #be123c;
      --primary-light: #fb7185;
      --primary-glow: rgba(225, 29, 72, 0.45);
      --accent: #16a34a;
      --accent-gold: #facc15;
      --accent-glow: rgba(22, 163, 74, 0.35);
      
      --bg-dark: #0a0c0a;
      --bg-card: #141816;
      --bg-card-hover: #1c241c;
      --bg-surface: #0f1610;
      --border: rgba(251, 113, 133, 0.22);
      --border-bright: rgba(251, 113, 133, 0.45);
      
      --text-main: #fff1f2;
      --text-muted: #86efac;
      --text-sub: #a8b5a8;
      --text-dim: #6b7c6b;
      
      --gradient-main: linear-gradient(135deg, #e11d48 0%, #be123c 100%);
      --gradient-glow: linear-gradient(135deg, #fb7185 0%, #e11d48 50%, #16a34a 100%);
      --gradient-text: linear-gradient(135deg, #fecdd3 0%, #fb7185 50%, #facc15 100%);
      --gradient-card: linear-gradient(180deg, rgba(225, 29, 72, 0.08) 0%, rgba(7, 23, 40, 0.95) 100%);
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-full: 9999px;
      --shadow-glow: 0 10px 30px -10px rgba(225, 29, 72, 0.5);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-tap-highlight-color: transparent;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      background-color: var(--bg-dark);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 15% 10%, rgba(225, 29, 72, 0.16) 0%, transparent 45%),
        radial-gradient(circle at 85% 40%, rgba(22, 163, 74, 0.12) 0%, transparent 40%),
        radial-gradient(circle at 50% 85%, rgba(190, 18, 60, 0.12) 0%, transparent 50%);
      background-attachment: fixed;
    }

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

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部导航 */
    header {
      position: sticky;
      top: 0;
      z-index: 1000;
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      background: rgba(3, 12, 23, 0.85);
      border-bottom: 1px solid var(--border);
      transition: all 0.3s ease;
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .logo-box {
      display: flex;
      align-items: center;
      gap: 12px;
      cursor: pointer;
    }

    .logo-icon {
      width: 42px;
      height: 42px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 14px var(--primary-glow);
    }

    .logo-text {
      display: flex;
      flex-direction: column;
    }

    .logo-title {
      font-size: 22px;
      font-weight: 800;
      letter-spacing: 0.5px;
      background: var(--gradient-text);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .logo-sub {
      font-size: 11px;
      color: var(--text-muted);
      letter-spacing: 1px;
      text-transform: uppercase;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
    }

    .nav-links a {
      font-size: 15px;
      color: var(--text-sub);
      font-weight: 500;
      transition: color 0.2s;
      position: relative;
    }

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

    .nav-links a:hover::after {
      content: "";
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-size: 14px;
      font-weight: 600;
      padding: 10px 20px;
      border-radius: var(--radius-full);
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
      cursor: pointer;
      border: none;
      outline: none;
    }

    .btn-primary {
      background: var(--gradient-main);
      color: #0a0c0a;
      font-weight: 700;
      box-shadow: var(--shadow-glow);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, #fb7185 0%, #e11d48 100%);
      transform: translateY(-2px);
      box-shadow: 0 12px 32px -8px rgba(225, 29, 72, 0.7);
    }

    .btn-outline {
      background: rgba(225, 29, 72, 0.08);
      color: var(--primary-light);
      border: 1px solid var(--border-bright);
    }

    .btn-outline:hover {
      background: rgba(225, 29, 72, 0.2);
      border-color: var(--primary-light);
      transform: translateY(-2px);
    }

    /* Hero Section */
    .hero-section {
      padding: 80px 0 60px;
      position: relative;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(225, 29, 72, 0.12);
      border: 1px solid rgba(251, 113, 133, 0.35);
      padding: 6px 16px;
      border-radius: var(--radius-full);
      font-size: 13px;
      font-weight: 600;
      color: var(--text-muted);
      margin-bottom: 24px;
    }

    .hero-badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #facc15;
      box-shadow: 0 0 10px #facc15;
      animation: pulse 2s infinite;
    }

    @keyframes pulse {
      0% { transform: scale(0.95); opacity: 0.8; }
      50% { transform: scale(1.3); opacity: 1; }
      100% { transform: scale(0.95); opacity: 0.8; }
    }

    .hero-title {
      font-size: 52px;
      line-height: 1.15;
      font-weight: 900;
      letter-spacing: -0.5px;
      margin-bottom: 20px;
    }

    .gradient-text {
      background: var(--gradient-text);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-desc {
      font-size: 17px;
      color: var(--text-sub);
      line-height: 1.7;
      margin-bottom: 36px;
      max-width: 580px;
    }

    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 48px;
    }

    .btn-large {
      padding: 14px 28px;
      font-size: 16px;
      border-radius: var(--radius-md);
    }

    /* 数据指标面板：防折行，带 + 号 */
    .metrics-bar {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 22px 18px;
      box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
    }

    .metric-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      border-right: 1px solid rgba(251, 113, 133, 0.15);
      padding: 0 8px;
    }

    .metric-item:last-child {
      border-right: none;
    }

    .metric-val {
      font-size: 26px;
      font-weight: 900;
      color: #fb7185;
      white-space: nowrap;
      flex-shrink: 0;
      font-variant-numeric: tabular-nums;
      text-shadow: 0 2px 10px rgba(225, 29, 72, 0.3);
    }

    .metric-label {
      font-size: 12px;
      color: var(--text-muted);
      margin-top: 6px;
      white-space: nowrap;
    }

    /* 手机真机演示机模 (Sapphire Cyber Frame) */
    .phone-mockup-wrapper {
      position: relative;
      display: flex;
      justify-content: center;
    }

    .phone-glow {
      position: absolute;
      width: 380px;
      height: 600px;
      background: radial-gradient(circle, rgba(225, 29, 72, 0.3) 0%, rgba(22, 163, 74, 0.05) 50%, transparent 70%);
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      z-index: 1;
      filter: blur(40px);
      pointer-events: none;
    }

    .phone-frame {
      position: relative;
      z-index: 2;
      width: 320px;
      height: 640px;
      background: #0a120c;
      border: 10px solid #14532d;
      border-radius: 46px;
      box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.9), 0 0 35px rgba(225, 29, 72, 0.35);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }

    .phone-island {
      position: absolute;
      top: 10px;
      left: 50%;
      transform: translateX(-50%);
      width: 96px;
      height: 24px;
      background: #000;
      border-radius: 20px;
      z-index: 10;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 10px;
    }

    .island-cam {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #9f1239;
    }

    .island-sensor {
      width: 5px;
      height: 5px;
      border-radius: 50%;
      background: #be123c;
    }

    .phone-screen {
      width: 100%;
      height: 100%;
      position: relative;
      background: #000;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .screen-bg-poster {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      z-index: 1;
      transition: transform 0.6s ease;
    }

    .phone-frame:hover .screen-bg-poster {
      transform: scale(1.04);
    }

    .screen-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.1) 40%, rgba(3, 14, 28, 0.95) 100%);
      z-index: 2;
    }

    .screen-topbar {
      position: relative;
      z-index: 3;
      padding: 38px 16px 10px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: #fff;
      font-size: 13px;
      font-weight: 600;
    }

    .screen-right-actions {
      position: absolute;
      right: 12px;
      bottom: 120px;
      z-index: 4;
      display: flex;
      flex-direction: column;
      gap: 16px;
      align-items: center;
    }

    .action-btn {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 4px;
      color: #fff;
      font-size: 11px;
    }

    .action-icon {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: rgba(225, 29, 72, 0.25);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(251, 113, 133, 0.4);
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .screen-bottom-info {
      position: relative;
      z-index: 4;
      padding: 16px;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .drama-tag {
      align-self: flex-start;
      background: var(--primary);
      color: #0a0c0a;
      font-size: 11px;
      font-weight: 800;
      padding: 2px 8px;
      border-radius: 4px;
    }

    .drama-name {
      color: #fff;
      font-size: 18px;
      font-weight: 800;
      text-shadow: 0 2px 6px rgba(0,0,0,0.8);
    }

    .drama-subtitle {
      color: var(--text-muted);
      font-size: 12px;
      line-height: 1.4;
    }

    .progress-bar-wrap {
      width: 100%;
      height: 4px;
      background: rgba(255,255,255,0.25);
      border-radius: 2px;
      overflow: hidden;
      margin-top: 4px;
    }

    .progress-bar-fill {
      width: 68%;
      height: 100%;
      background: #fb7185;
    }

    .phone-toast {
      position: absolute;
      top: 75px;
      left: 50%;
      transform: translateX(-50%);
      z-index: 5;
      background: rgba(225, 29, 72, 0.95);
      color: #0a0c0a;
      font-size: 11px;
      font-weight: 800;
      padding: 5px 12px;
      border-radius: 20px;
      white-space: nowrap;
      box-shadow: 0 4px 14px rgba(0,0,0,0.5);
      display: flex;
      align-items: center;
      gap: 6px;
    }

    /* 通用章节标题 */
    .section-header {
      text-align: center;
      margin-bottom: 48px;
    }

    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      color: var(--primary-light);
      text-transform: uppercase;
      letter-spacing: 1.5px;
      margin-bottom: 12px;
      background: rgba(225, 29, 72, 0.1);
      padding: 4px 14px;
      border-radius: var(--radius-full);
      border: 1px solid rgba(251, 113, 133, 0.3);
    }

    .section-title {
      font-size: 36px;
      font-weight: 800;
      letter-spacing: -0.5px;
      margin-bottom: 14px;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-sub);
      max-width: 640px;
      margin: 0 auto;
    }

    /* 剧单网格区域 (Catalog) */
    .catalog-section {
      padding: 80px 0;
      background: rgba(5, 18, 32, 0.5);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }

    .filter-tabs {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 40px;
    }

    .filter-btn {
      padding: 8px 20px;
      border-radius: var(--radius-full);
      font-size: 14px;
      font-weight: 600;
      color: var(--text-sub);
      background: var(--bg-card);
      border: 1px solid var(--border);
      cursor: pointer;
      transition: all 0.2s;
    }

    .filter-btn:hover, .filter-btn.active {
      background: var(--primary);
      color: #0a0c0a;
      border-color: var(--primary);
      box-shadow: 0 4px 16px var(--primary-glow);
    }

    .drama-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .drama-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .drama-card:hover {
      transform: translateY(-8px);
      border-color: var(--primary-light);
      box-shadow: 0 16px 40px -10px rgba(225, 29, 72, 0.4);
    }

    .card-poster-wrap {
      position: relative;
      width: 100%;
      padding-top: 140%;
      background: #0a120c;
      overflow: hidden;
    }

    .card-poster {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

    .drama-card:hover .card-poster {
      transform: scale(1.06);
    }

    .card-badge {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(3, 12, 23, 0.85);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(251, 113, 133, 0.4);
      color: #fb7185;
      font-size: 11px;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: 6px;
    }

    .card-score {
      position: absolute;
      bottom: 10px;
      right: 12px;
      background: rgba(0, 0, 0, 0.75);
      color: #facc15;
      font-size: 13px;
      font-weight: 900;
      padding: 2px 8px;
      border-radius: 6px;
      display: flex;
      align-items: center;
      gap: 4px;
    }

    .card-info {
      padding: 16px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
      justify-content: space-between;
    }

    .card-title {
      font-size: 16px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 6px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .card-tags {
      display: flex;
      gap: 6px;
      margin-bottom: 10px;
    }

    .tag-pill {
      font-size: 11px;
      background: rgba(225, 29, 72, 0.12);
      color: var(--text-muted);
      padding: 2px 6px;
      border-radius: 4px;
    }

    .card-desc {
      font-size: 12px;
      color: var(--text-sub);
      line-height: 1.5;
      height: 36px;
      overflow: hidden;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      margin-bottom: 14px;
    }

    .card-action {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-top: 1px solid rgba(251, 113, 133, 0.12);
      padding-top: 12px;
      font-size: 12px;
      color: var(--text-dim);
    }

    .play-link {
      color: var(--primary-light);
      font-weight: 700;
      display: flex;
      align-items: center;
      gap: 4px;
      transition: gap 0.2s;
    }

    .drama-card:hover .play-link {
      gap: 8px;
      color: #fb7185;
    }

    /* 沉浸式观影台 (Theater Showcase) */
    .theater-section {
      padding: 80px 0;
    }

    .theater-stage {
      background: var(--gradient-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 40px;
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
      position: relative;
      overflow: hidden;
      box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
    }

    .theater-stage::before {
      content: "";
      position: absolute;
      top: -100px;
      right: -100px;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(225, 29, 72, 0.2) 0%, transparent 70%);
      filter: blur(50px);
      pointer-events: none;
    }

    .player-window {
      position: relative;
      width: 100%;
      padding-top: 56.25%; /* 16:9 */
      background: #000;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid rgba(251, 113, 133, 0.4);
      box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8);
    }

    .player-bg {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      filter: brightness(0.85);
    }

    .player-controls {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      padding: 16px;
      background: linear-gradient(0deg, rgba(0,0,0,0.9) 0%, transparent 100%);
      display: flex;
      flex-direction: column;
      gap: 8px;
      z-index: 2;
    }

    .player-btns {
      display: flex;
      align-items: center;
      justify-content: space-between;
      color: #fff;
      font-size: 13px;
    }

    .center-play-trigger {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      width: 64px;
      height: 64px;
      border-radius: 50%;
      background: rgba(225, 29, 72, 0.85);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      box-shadow: 0 0 30px var(--primary-glow);
      transition: all 0.3s;
      z-index: 3;
    }

    .center-play-trigger:hover {
      transform: translate(-50%, -50%) scale(1.15);
      background: #fb7185;
    }

    .playlist-items {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .playlist-item {
      display: flex;
      gap: 16px;
      padding: 14px;
      background: rgba(3, 12, 23, 0.6);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      cursor: pointer;
      transition: all 0.2s;
    }

    .playlist-item:hover, .playlist-item.active {
      border-color: var(--primary-light);
      background: rgba(225, 29, 72, 0.12);
      transform: translateX(6px);
    }

    .playlist-thumb {
      width: 60px;
      height: 80px;
      border-radius: 6px;
      object-fit: cover;
    }

    .playlist-meta {
      display: flex;
      flex-direction: column;
      justify-content: center;
      gap: 4px;
    }

    .playlist-title {
      font-size: 15px;
      font-weight: 700;
      color: #fff;
    }

    .playlist-desc {
      font-size: 12px;
      color: var(--text-sub);
    }

    /* 核心特性 (Features) */
    .features-section {
      padding: 80px 0;
      background: rgba(5, 18, 32, 0.4);
    }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      transition: all 0.3s;
      position: relative;
    }

    .feature-card:hover {
      border-color: var(--primary-light);
      transform: translateY(-6px);
      box-shadow: 0 16px 36px rgba(225, 29, 72, 0.2);
    }

    .feature-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: rgba(225, 29, 72, 0.15);
      border: 1px solid rgba(251, 113, 133, 0.4);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--primary-light);
    }

    .feature-num {
      position: absolute;
      top: 24px;
      right: 24px;
      font-size: 24px;
      font-weight: 900;
      color: rgba(251, 113, 133, 0.25);
    }

    .feature-title {
      font-size: 18px;
      font-weight: 800;
      margin-bottom: 10px;
      color: #fff;
    }

    .feature-desc {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 三步安装教程 (Install Guide) */
    .install-section {
      padding: 80px 0;
    }

    .step-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
      position: relative;
    }

    .step-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      display: flex;
      flex-direction: column;
      gap: 16px;
      position: relative;
    }

    .step-badge {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: var(--gradient-main);
      color: #0a0c0a;
      font-weight: 900;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      box-shadow: 0 4px 14px var(--primary-glow);
    }

    .step-title {
      font-size: 18px;
      font-weight: 700;
      color: #fff;
    }

    .step-desc {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 应用规格与页面说明 (Specs & Official Auth) */
    .specs-section {
      padding: 80px 0;
      background: rgba(5, 18, 32, 0.5);
    }

    .specs-table-wrap {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
    }

    .specs-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }

    .specs-table th, .specs-table td {
      padding: 18px 24px;
      border-bottom: 1px solid rgba(251, 113, 133, 0.12);
      font-size: 14px;
    }

    .specs-table th {
      background: rgba(225, 29, 72, 0.08);
      color: var(--primary-light);
      font-weight: 700;
      width: 25%;
    }

    .specs-table td {
      color: var(--text-main);
    }

    .specs-table tr:last-child th, .specs-table tr:last-child td {
      border-bottom: none;
    }

    .domain-highlight {
      font-size: 16px;
      font-weight: 800;
      color: #fb7185;
      background: rgba(251, 113, 133, 0.1);
      padding: 4px 10px;
      border-radius: 6px;
      border: 1px solid rgba(251, 113, 133, 0.3);
      display: inline-block;
    }

    /* 常见问题 Accordion (FAQ) */
    .faq-section {
      padding: 80px 0;
    }

    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all 0.2s;
    }

    .faq-item:hover {
      border-color: var(--primary-light);
    }

    .faq-question {
      padding: 20px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-size: 16px;
      font-weight: 700;
      color: #fff;
    }

    .faq-icon {
      font-size: 20px;
      color: var(--primary-light);
      transition: transform 0.3s;
    }

    .faq-answer {
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.7;
      display: none;
    }

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

    .faq-item.open .faq-icon {
      transform: rotate(45deg);
      color: #fb7185;
    }

    /* 页脚 (Footer) */
    footer {
      background: #01070e;
      border-top: 1px solid var(--border);
      padding: 60px 0 30px;
      font-size: 13px;
      color: var(--text-dim);
    }

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

    .footer-brand h4 {
      font-size: 20px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 12px;
      background: var(--gradient-text);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 16px;
    }

    .footer-col h5 {
      color: #fff;
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 16px;
    }

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

    .footer-col a:hover {
      color: var(--primary-light);
    }

    .footer-bottom {
      border-top: 1px solid rgba(251, 113, 133, 0.1);
      padding-top: 24px;
      text-align: center;
      line-height: 1.8;
    }

    /* 移动端响应式 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
      }
      .hero-desc {
        margin: 0 auto 36px;
      }
      .hero-cta-group {
        justify-content: center;
      }
      .drama-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .theater-stage {
        grid-template-columns: 1fr;
      }
      .feature-grid, .step-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .metrics-bar {
        grid-template-columns: repeat(3, 1fr);
      }
      .metric-item:nth-child(3) {
        border-right: none;
      }
    }

    @media (max-width: 640px) {
      .nav-links {
        display: none;
      }
      .hero-title {
        font-size: 34px;
      }
      .drama-grid {
        grid-template-columns: 1fr;
      }
      .metrics-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .metric-item:nth-child(2) {
        border-right: none;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .phone-frame {
        width: 280px;
        height: 560px;
      }
    }