:root {
    --bg-dark: #0a0b10;
    --bg-card: #141724;
    --bg-card-hover: #1c2135;
    --primary: #ff3b5c;
    --primary-gradient: linear-gradient(135deg, #ff3b5c 0%, #ff7a45 100%);
    --accent: #ffce4a;
    --text-main: #f2f4f8;
    --text-muted: #9aa3b5;
    --border-color: rgba(255, 255, 255, 0.08);
    --radius-md: 16px;
    --radius-lg: 24px;
    --container: 1200px;
  }

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

  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
  }

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

  ul {
    list-style: none;
  }

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

  /* 顶部导航 */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(10, 11, 16, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
  }

  .logo-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
  }

  .logo-wrap img {
    height: 32px;
    width: auto;
    border-radius: 6px;
    display: block;
  }

  .logo-text {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 1px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .nav-links {
    display: none;
    gap: 28px;
  }

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

  .nav-links a:hover {
    color: var(--text-main);
  }

  .header-download-btn {
    display: none;
    background: var(--primary-gradient);
    color: #fff;
    padding: 8px 20px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 14px;
    box-shadow: 0 4px 12px rgba(255, 59, 92, 0.3);
  }

  /* 首屏 Hero */
  .hero {
    padding: 120px 0 60px;
    position: relative;
    overflow: hidden;
  }

  .hero::before {
    content: "";
    position: absolute;
    top: -100px;
    right: -100px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 59, 92, 0.15) 0%, rgba(10, 11, 16, 0) 70%);
    z-index: -1;
  }

  .hero::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 122, 69, 0.1) 0%, rgba(10, 11, 16, 0) 70%);
    z-index: -1;
  }

  .hero-content {
    text-align: center;
    margin-bottom: 40px;
  }

  .hero-title {
    font-size: 36px;
    font-weight: 900;
    line-height: 1.25;
    margin-bottom: 16px;
    letter-spacing: 1px;
  }

  .hero-title span {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .hero-subtitle {
    font-size: 16px;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 32px;
  }

  .download-group {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }

  .dl-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 700;
    transition: transform 0.2s, box-shadow 0.2s;
    min-width: 170px;
    border: none;
    cursor: pointer;
  }

  .dl-btn.primary {
    background: var(--primary-gradient);
    color: #fff;
    box-shadow: 0 8px 24px rgba(255, 59, 92, 0.35);
  }

  .dl-btn.secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-main);
    border: 1px solid var(--border-color);
  }

  .dl-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(255, 59, 92, 0.4);
  }

  .dl-btn.secondary:hover {
    box-shadow: 0 12px 28px rgba(255, 255, 255, 0.1);
  }

  /* 海报瀑布流/展示 */
  .poster-showcase {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    padding-bottom: 40px;
  }

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

  .poster-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s;
  }

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

  .poster-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    color: var(--accent);
    font-weight: 600;
  }

  /* 通用区块样式 */
  .section {
    padding: 60px 0;
  }

  .section-header {
    margin-bottom: 40px;
    text-align: center;
  }

  .section-title {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 12px;
  }

  .section-desc {
    font-size: 15px;
    color: var(--text-muted);
  }

  /* 魔改竖版-最新短剧 */
  .drama-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .drama-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
  }

  .drama-card:hover {
    transform: translateY(-4px);
    background: var(--bg-card-hover);
    border-color: rgba(255, 59, 92, 0.3);
  }

  .drama-cover {
    width: 100%;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    display: block;
  }

  .drama-info {
    padding: 16px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
  }

  .drama-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .drama-desc {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex-grow: 1;
  }

  .drama-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--text-muted);
    margin-top: auto;
  }

  .drama-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 12px;
  }

  .drama-tag {
    font-size: 11px;
    background: rgba(255, 59, 92, 0.15);
    color: #ff7a45;
    padding: 2px 8px;
    border-radius: 4px;
  }

  /* 安装步骤 */
  .steps-container {
    display: flex;
    flex-direction: column;
    gap: 24px;
  }

  .step-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 24px;
    display: flex;
    gap: 20px;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
  }

  .step-card::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-gradient);
  }

  .step-num {
    font-size: 32px;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.1);
    line-height: 1;
    flex-shrink: 0;
  }

  .step-content h3 {
    font-size: 18px;
    margin-bottom: 8px;
  }

  .step-content p {
    font-size: 14px;
    color: var(--text-muted);
  }

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

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

  .faq-question {
    padding: 20px;
    font-weight: 700;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
  }

  .faq-question::after {
    content: "+";
    font-size: 20px;
    color: var(--primary);
    transition: transform 0.3s;
  }

  .faq-item.active .faq-question::after {
    transform: rotate(45deg);
  }

  .faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.8;
  }

  .faq-item.active .faq-answer {
    padding: 0 20px 20px;
    max-height: 200px;
  }

  /* 用户热评 */
  .reviews-wrapper {
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  .review-card {
    background: linear-gradient(145deg, var(--bg-card) 0%, rgba(20, 23, 36, 0.5) 100%);
    border-radius: var(--radius-md);
    padding: 20px;
    border: 1px solid var(--border-color);
    position: relative;
  }

  .review-user {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
  }

  .review-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 16px;
    color: #fff;
  }

  .review-name {
    font-weight: 700;
    font-size: 15px;
  }

  .review-stars {
    color: var(--accent);
    font-size: 12px;
    margin-top: 2px;
  }

  .review-text {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
  }

  /* AI短剧 */
  .ai-showcase {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 24px;
    border: 1px solid var(--border-color);
  }

  .ai-image-wrap {
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
  }

  .ai-image-wrap img {
    width: 100%;
    height: auto;
    display: block;
  }

  .ai-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--primary);
    color: #fff;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
  }

  .ai-content h3 {
    font-size: 22px;
    margin-bottom: 16px;
  }

  .ai-content p {
    font-size: 15px;
    color: var(--text-muted);
    margin-bottom: 24px;
    line-height: 1.8;
  }

  /* 隐私安全 & 创作者计划 & 交流社区 */
  .grid-3 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .feature-box {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
  }

  .feature-box:hover {
    background: var(--bg-card-hover);
    border-color: rgba(255, 122, 69, 0.3);
  }

  .feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(255, 59, 92, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 16px;
    color: var(--primary);
  }

  .feature-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
  }

  .feature-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .feature-list li {
    font-size: 14px;
    color: var(--text-muted);
    display: flex;
    align-items: flex-start;
    gap: 8px;
  }

  .feature-list li::before {
    content: "•";
    color: var(--primary);
    font-weight: bold;
  }

  /* 底部 CTA */
  .bottom-cta {
    padding: 60px 0;
    background: linear-gradient(180deg, var(--bg-dark) 0%, #161028 100%);
    text-align: center;
    border-top: 1px solid var(--border-color);
  }

  .bottom-cta h2 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 16px;
  }

  .bottom-cta p {
    font-size: 15px;
    color: var(--text-muted);
    margin-bottom: 32px;
  }

  /* 页脚 */
  .site-footer {
    background: #05060a;
    padding: 40px 0 24px;
    text-align: center;
    border-top: 1px solid var(--border-color);
  }

  .footer-content {
    font-size: 12px;
    color: #5c6273;
    line-height: 2;
  }

  .footer-content a {
    color: #5c6273;
    transition: color 0.2s;
  }

  .footer-content a:hover {
    color: var(--text-muted);
  }

  /* 响应式 768px */
  @media (min-width: 768px) {
    .hero-title { font-size: 44px; }
    .poster-showcase { grid-template-columns: repeat(4, 1fr); gap: 20px; }
    .drama-grid { grid-template-columns: repeat(3, 1fr); }
    .steps-container { flex-direction: row; flex-wrap: wrap; }
    .step-card { flex: 1 1 calc(50% - 12px); }
    .reviews-wrapper { display: grid; grid-template-columns: repeat(2, 1fr); }
    .ai-showcase { grid-template-columns: 1fr 1fr; align-items: center; }
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
    .faq-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
  }

  /* 响应式 1024px */
  @media (min-width: 1024px) {
    .site-header { padding: 0 20px; }
    .nav-links { display: flex; }
    .header-download-btn { display: inline-block; }
    .hero { padding: 160px 0 80px; }
    .hero-title { font-size: 56px; }
    .poster-showcase { grid-template-columns: repeat(6, 1fr); }
    .drama-grid { grid-template-columns: repeat(4, 1fr); }
    .step-card { flex: 1; padding: 32px; }
    .reviews-wrapper { grid-template-columns: repeat(3, 1fr); }
    .ai-showcase { padding: 40px; gap: 40px; }
    .faq-list { grid-template-columns: repeat(3, 1fr); }
  }