:root {
    --purple-deep: #1a0b2e;
    --purple-main: #7b2cbf;
    --purple-light: #9d4edd;
    --purple-glow: #c77dff;
    --bg-dark: #0d0614;
    --bg-card: #1c1128;
    --text-main: #f3e8ff;
    --text-sub: #b8a8c8;
    --white: #ffffff;
    --black: #000000;
  }

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

  body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
  }

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

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

  .container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }

  /* Header */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(13, 6, 20, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(123, 44, 191, 0.3);
    padding: 12px 0;
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .brand {
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .brand img {
    height: 32px;
    width: auto;
    border-radius: 8px;
  }

  .brand-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 1px;
  }

  .header-nav {
    display: none;
    gap: 24px;
  }

  .header-nav a {
    color: var(--text-sub);
    font-size: 14px;
    transition: color 0.3s;
  }

  .header-nav a:hover {
    color: var(--purple-glow);
  }

  .header-cta {
    display: none;
    background: linear-gradient(135deg, var(--purple-main), var(--purple-light));
    color: var(--white);
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    transition: transform 0.2s;
  }

  .header-cta:hover {
    transform: scale(1.05);
  }

  /* Hero */
  .hero {
    position: relative;
    padding: 60px 0 40px;
    background: radial-gradient(circle at 50% 0%, rgba(123, 44, 191, 0.4) 0%, transparent 60%);
    text-align: center;
  }

  .hero h1 {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #fff, var(--purple-glow));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }

  .hero-sub {
    font-size: 16px;
    color: var(--text-sub);
    max-width: 600px;
    margin: 0 auto 24px;
  }

  .hero-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
  }

  .btn-primary {
    display: inline-block;
    background: linear-gradient(135deg, var(--purple-main), var(--purple-light));
    color: var(--white);
    padding: 14px 36px;
    border-radius: 30px;
    font-size: 18px;
    font-weight: 700;
    box-shadow: 0 4px 20px rgba(123, 44, 191, 0.5);
    transition: all 0.3s;
    border: 2px solid transparent;
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(157, 78, 221, 0.7);
  }

  .btn-secondary {
    display: inline-block;
    background: transparent;
    color: var(--purple-glow);
    padding: 14px 36px;
    border-radius: 30px;
    font-size: 18px;
    font-weight: 600;
    border: 2px solid var(--purple-main);
    transition: all 0.3s;
  }

  .btn-secondary:hover {
    background: rgba(123, 44, 191, 0.1);
  }

  /* Section Common */
  section {
    padding: 60px 0;
  }

  .section-title {
    font-size: 26px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 12px;
    color: var(--white);
  }

  .section-desc {
    text-align: center;
    color: var(--text-sub);
    margin-bottom: 40px;
    font-size: 15px;
  }

  /* 专题板块 */
  .theme-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .theme-card {
    background: var(--bg-card);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(123, 44, 191, 0.2);
    transition: transform 0.3s, border-color 0.3s;
  }

  .theme-card:hover {
    transform: translateY(-4px);
    border-color: var(--purple-light);
  }

  .theme-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
  }

  .theme-info {
    padding: 16px;
  }

  .theme-info h3 {
    font-size: 18px;
    color: var(--white);
    margin-bottom: 8px;
  }

  .theme-info p {
    font-size: 14px;
    color: var(--text-sub);
  }

  /* AI 帮你挑剧 */
  .ai-pick {
    background: linear-gradient(135deg, rgba(123, 44, 191, 0.15), rgba(26, 11, 46, 0.8));
    border-radius: 24px;
    padding: 40px 20px;
    border: 1px solid rgba(157, 78, 221, 0.3);
  }

  .ai-pick-inner {
    display: flex;
    flex-direction: column;
    gap: 30px;
  }

  .ai-pick-text h2 {
    font-size: 24px;
    margin-bottom: 16px;
    color: var(--purple-glow);
  }

  .ai-pick-text p {
    color: var(--text-sub);
    font-size: 15px;
    margin-bottom: 12px;
  }

  .ai-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
  }

  .ai-tags span {
    background: rgba(123, 44, 191, 0.3);
    color: var(--purple-glow);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    border: 1px solid rgba(157, 78, 221, 0.4);
  }

  .ai-pick-img img {
    width: 100%;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  }

  /* 剧集展示墙 */
  .showcase-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .showcase-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 3/4;
    background: var(--bg-card);
  }

  .showcase-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s;
  }

  .showcase-item:hover img {
    transform: scale(1.05);
  }

  .showcase-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 30px 12px 12px;
    background: linear-gradient(transparent, rgba(0,0,0,0.9));
    font-size: 14px;
    font-weight: 600;
    color: var(--white);
  }

  /* 为什么选我们 */
  .features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .feature-item {
    background: var(--bg-card);
    padding: 24px;
    border-radius: 16px;
    border-left: 4px solid var(--purple-main);
  }

  .feature-item h3 {
    font-size: 18px;
    color: var(--white);
    margin-bottom: 8px;
  }

  .feature-item p {
    font-size: 14px;
    color: var(--text-sub);
  }

  /* 下载板块 */
  .download-section {
    text-align: center;
    background: radial-gradient(circle at 50% 50%, rgba(123, 44, 191, 0.3) 0%, transparent 70%);
  }

  .download-big-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: linear-gradient(135deg, #9d4edd, #7b2cbf);
    color: var(--white);
    padding: 20px 60px;
    border-radius: 40px;
    font-size: 22px;
    font-weight: 800;
    box-shadow: 0 0 40px rgba(157, 78, 221, 0.6);
    transition: all 0.3s;
    animation: pulse 2s infinite;
    margin-top: 24px;
  }

  .download-big-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 60px rgba(157, 78, 221, 0.9);
  }

  @keyframes pulse {
    0% { box-shadow: 0 0 20px rgba(157, 78, 221, 0.6); }
    50% { box-shadow: 0 0 50px rgba(157, 78, 221, 0.9); }
    100% { box-shadow: 0 0 20px rgba(157, 78, 221, 0.6); }
  }

  /* 用户评价 */
  .reviews-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .review-card {
    background: var(--bg-card);
    padding: 24px;
    border-radius: 16px;
    border: 1px solid rgba(123, 44, 191, 0.2);
  }

  .review-stars {
    color: var(--purple-glow);
    font-size: 16px;
    margin-bottom: 12px;
  }

  .review-text {
    font-size: 15px;
    color: var(--text-main);
    margin-bottom: 12px;
    font-style: italic;
  }

  .review-user {
    font-size: 13px;
    color: var(--text-sub);
  }

  /* 问答 */
  .faq-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  .faq-item {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid rgba(123, 44, 191, 0.2);
  }

  .faq-item h3 {
    font-size: 16px;
    color: var(--purple-glow);
    margin-bottom: 10px;
  }

  .faq-item p {
    font-size: 14px;
    color: var(--text-sub);
  }

  /* Footer */
  .site-footer {
    padding: 30px 0;
    text-align: center;
    font-size: 12px;
    color: #6b5b7b;
    border-top: 1px solid rgba(123, 44, 191, 0.15);
  }

  .site-footer p {
    margin-bottom: 6px;
  }

  .site-footer a {
    color: #6b5b7b;
    text-decoration: none;
  }

  .site-footer a:hover {
    color: var(--text-sub);
  }

  .site-footer time {
    display: block;
    margin-top: 6px;
  }

  /* Tablet 768px */
  @media (min-width: 768px) {
    .theme-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .showcase-grid {
      grid-template-columns: repeat(3, 1fr);
    }
    .features-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .reviews-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .hero h1 {
      font-size: 42px;
    }
    .ai-pick-inner {
      flex-direction: row;
      align-items: center;
    }
    .ai-pick-text, .ai-pick-img {
      flex: 1;
    }
    .header-nav {
      display: flex;
    }
    .header-cta {
      display: block;
    }
    .section-title {
      font-size: 32px;
    }
  }

  /* Desktop 1024px */
  @media (min-width: 1024px) {
    section {
      padding: 80px 0;
    }
    .theme-grid {
      grid-template-columns: repeat(3, 1fr);
    }
    .showcase-grid {
      grid-template-columns: repeat(4, 1fr);
    }
    .features-grid {
      grid-template-columns: repeat(4, 1fr);
    }
    .reviews-grid {
      grid-template-columns: repeat(3, 1fr);
    }
    .hero h1 {
      font-size: 52px;
    }
    .hero-sub {
      font-size: 18px;
    }
  }