```css
:root {
  --primary: #ff4d6d;
  --primary-dark: #c9184a;
  --secondary: #ffb347;
  --accent: #4cc9f0;
  --bg: #0f0f1a;
  --bg-light: #1a1a2e;
  --card-bg: rgba(255, 255, 255, 0.06);
  --card-border: rgba(255, 255, 255, 0.1);
  --text: #e8e8f0;
  --text-muted: #a0a0b8;
  --text-dark: #1a1a2e;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 12px 48px rgba(255, 77, 109, 0.2);
  --blur: blur(16px);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-family);
  background: linear-gradient(135deg, #0f0f1a 0%, #1a1a2e 50%, #16213e 100%);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  transition: var(--transition);
}

/* 暗色模式 */
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f0f0f5;
    --bg-light: #ffffff;
    --card-bg: rgba(255, 255, 255, 0.8);
    --card-border: rgba(0, 0, 0, 0.08);
    --text: #1a1a2e;
    --text-muted: #666680;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 12px 48px rgba(255, 77, 109, 0.15);
  }
  body {
    background: linear-gradient(135deg, #f0f0f5 0%, #ffffff 50%, #f5f0ff 100%);
  }
}

/* 滚动条 */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--primary), var(--secondary));
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* 头部导航 */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15, 15, 26, 0.8);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--card-border);
  transition: var(--transition);
}

@media (prefers-color-scheme: light) {
  header {
    background: rgba(255, 255, 255, 0.8);
  }
}

nav {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}

.logo h1 {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: -0.5px;
  white-space: nowrap;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 4px;
  align-items: center;
  flex-wrap: wrap;
}

nav ul li a {
  display: block;
  padding: 8px 16px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 50px;
  transition: var(--transition);
  position: relative;
}

nav ul li a:hover {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  box-shadow: 0 4px 20px rgba(255, 77, 109, 0.3);
  transform: translateY(-2px);
}

/* 主内容区域 */
main {
  max-width: 1440px;
  margin: 0 auto;
  padding: 24px;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 32px;
  position: relative;
}

main > section {
  min-width: 0;
}

/* 通用区块样式 */
section {
  margin-bottom: 48px;
  position: relative;
}

section h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 24px;
  padding-bottom: 16px;
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
}

section h2::before {
  content: '';
  width: 48px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 4px;
  display: inline-block;
  flex-shrink: 0;
}

section h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--card-border), transparent);
}

/* 电影网格 */
.movie-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.movie-grid article,
.featured-grid article,
.cast-grid article {
  background: var(--card-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  animation: fadeInUp 0.6s ease both;
  display: flex;
  flex-direction: column;
}

.movie-grid article:hover,
.featured-grid article:hover,
.cast-grid article:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
}

.movie-grid article img,
.featured-grid article img,
.cast-grid article img {
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform 0.5s ease;
  background: linear-gradient(135deg, #2a2a40, #1a1a2e);
}

.movie-grid article:hover img,
.featured-grid article:hover img,
.cast-grid article:hover img {
  transform: scale(1.05);
}

.movie-grid article h3,
.featured-grid article h3,
.cast-grid article h3 {
  font-size: 1.2rem;
  font-weight: 600;
  padding: 16px 16px 8px;
  color: var(--text);
}

.movie-grid article p,
.featured-grid article p,
.cast-grid article p {
  padding: 0 16px;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.movie-grid article p:last-child,
.featured-grid article p:last-child,
.cast-grid article p:last-child {
  padding-bottom: 16px;
}

/* 精品推荐 */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.featured-grid article {
  position: relative;
}

.featured-grid article::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
  z-index: 1;
}

.featured-grid article p {
  line-height: 1.5;
}

/* 影片详细介绍 */
#movie-detail article {
  background: var(--card-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 32px;
  transition: var(--transition);
  animation: fadeInUp 0.6s ease both;
}

#movie-detail article:hover {
  box-shadow: var(--shadow);
  border-color: var(--secondary);
}

#movie-detail img {
  max-width: 100%;
  border-radius: var(--radius-sm);
  margin-bottom: 24px;
  box-shadow: var(--shadow);
}

#movie-detail h3 {
  font-size: 1.4rem;
  margin: 24px 0 12px;
  color: var(--primary);
  position: relative;
  padding-left: 16px;
}

#movie-detail h3::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 20px;
  background: linear-gradient(180deg, var(--primary), var(--secondary));
  border-radius: 4px;
}

#movie-detail p {
  color: var(--text);
  line-height: 1.8;
  margin-bottom: 16px;
  font-size: 1rem;
}

/* 演员阵容 */
.cast-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}

.cast-grid article {
  text-align: center;
  padding-bottom: 20px;
}

.cast-grid article img {
  width: 200px;
  height: 280px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  margin: 16px auto 0;
  display: block;
  box-shadow: var(--shadow);
}

.cast-grid article h3 {
  font-size: 1.1rem;
  margin-top: 12px;
}

.cast-grid article p {
  font-size: 0.85rem;
  padding: 0 12px;
}

/* 平台介绍 */
#platform-intro {
  background: linear-gradient(135deg, rgba(255, 77, 109, 0.1), rgba(76, 201, 240, 0.1));
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 32px;
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  animation: fadeInUp 0.6s ease both;
}

#platform-intro p {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--text);
  margin-bottom: 16px;
}

/* APP下载 */
#app-download {
  text-align: center;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius);
  padding: 48px 32px;
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.6s ease both;
}

#app-download::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.2), transparent 70%);
  transform: rotate(45deg);
}

#app-download h2 {
  color: #fff;
  font-size: 2.5rem;
  margin-bottom: 16px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

#app-download p {
  color: rgba(255, 255, 255, 0.95);
  font-size: 1.1rem;
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.8;
}

#app-download h2::before {
  display: none;
}

#app-download h2::after {
  display: none;
}

.download-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.download-buttons a {
  display: inline-block;
  padding: 14px 32px;
  background: #fff;
  color: var(--primary);
  text-decoration: none;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.download-buttons a:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
  background: var(--text-dark);
  color: #fff;
}

/* 用户评论 */
.review-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.review-list blockquote {
  background: var(--card-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  font-style: italic;
  color: var(--text);
  line-height: 1.6;
  position: relative;
  transition: var(--transition);
  animation: fadeInUp 0.6s ease both;
}

.review-list blockquote::before {
  content: '"';
  position: absolute;
  top: -10px;
  left: 16px;
  font-size: 4rem;
  color: var(--primary);
  opacity: 0.3;
  font-style: normal;
}

.review-list blockquote:hover {
  transform: translateY(-4px);
  border-color: var(--secondary);
  box-shadow: var(--shadow);
}

/* 侧边栏 */
aside {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: 96px;
  align-self: start;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  padding-right: 4px;
}

aside section {
  background: var(--card-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 0;
  transition: var(--transition);
  animation: fadeInUp 0.6s ease both;
}

aside section:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}

aside h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--card-border);
  color: var(--text);
  position: relative;
}

aside h3::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--primary);
}

aside ul {
  list-style: none;
}

aside ul li {
  padding: 8px 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  border-bottom: 1px dashed var(--card-border);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

aside ul li:last-child {
  border-bottom: none;
}

aside ul li:hover {
  color: var(--primary);
  padding-left: 8px;
  cursor: pointer;
}

aside ul li::before {
  content: '▸';
  color: var(--primary);
  font-size: 0.8rem;
  opacity: 0;
  transition: var(--transition);
}

aside ul li:hover::before {
  opacity: 1;
}

/* 页脚 */
footer {
  background: rgba(15, 15, 26, 0.9);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-top: 1px solid var(--card-border);
  padding: 48px 24px 24px;
  margin-top: 48px;
}

@media (prefers-color-scheme: light) {
  footer {
    background: rgba(255, 255, 255, 0.9);
  }
}

.footer-links {
  max-width: 1440px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.footer-links h3 {
  font-size: 1.2rem;
  margin-bottom: 16px;
  color: var(--text);
}

.footer-links ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-links ul li a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
  padding: 4px 8px;
  border-radius: 4px;
}

.footer-links ul li a:hover {
  color: var(--primary);
  background: rgba(255, 77, 109, 0.1);
}

.copyright {
  max-width: 1440px;
  margin: 0 auto;
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid var(--card-border);
}

.copyright p {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.8;
  margin-bottom: 8px;
}

.copyright a {
  color: var(--primary);
  text-decoration: none;
  margin: 0 8px;
  transition: var(--transition);
}

.copyright a:hover {
  text-decoration: underline;
}

/* 响应式布局 */
@media (max-width: 1200px) {
  main {
    grid-template-columns: 1fr;
  }

  aside {
    position: static;
    max-height: none;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
    padding-right: 0;
  }

  aside section {
    margin-bottom: 0;
  }
}

@media (max-width: 768px) {
  nav {
    flex-direction: column;
    padding: 12px 16px;
    gap: 12px;
  }

  nav ul {
    justify-content: center;
    gap: 4px;
    width: 100%;
    flex-wrap: wrap;
  }

  nav ul li a {
    padding: 6px 12px;
    font-size: 0.85rem;
  }

  main {
    padding: 16px;
    gap: 24px;
  }

  section h2 {
    font-size: 1.5rem;
  }

  .movie-grid,
  .featured-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
  }

  .cast-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 16px;
  }

  .cast-grid article img {
    width: 140px;
    height: 200px;
  }

  #movie-detail article {
    padding: 20px;
  }

  #app-download {
    padding: 32px 20px;
  }

  #app-download h2 {
    font-size: 1.8rem;
  }

  .download-buttons a {
    padding: 12px 24px;
    font-size: 0.9rem;
  }

  .review-list {
    grid-template-columns: 1fr;
  }

  footer {
    padding: 32px 16px 16px;
  }

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

@media (max-width: 480px) {
  .movie-grid,
  .featured-grid {
    grid-template-columns: 1fr;
  }

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

  main {
    padding: 12px;
  }

  section h2 {
    font-size: 1.3rem;
  }

  .logo h1 {
    font-size: 1.5rem;
  }

  nav ul {
    gap: 2px;
  }

  nav ul li a {
    padding: 4px 8px;
    font-size: 0.8rem;
  }
}

/* 动画 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* 滚动动画 */
section {
  animation: fadeInUp 0.6s ease both;
}

/* 图片加载动画 */
img {
  opacity: 0;
  animation: fadeIn 0.5s ease forwards;
}

img.loaded {
  opacity: 1;
}

/* 标题渐变效果 */
h1, h2, h3 {
  background: linear-gradient(135deg, var(--text), var(--text-muted));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

section h2 {
  background: linear-gradient(135deg, var(--text), var(--primary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* 卡片悬浮光效 */
.movie-grid article::after,
.featured-grid article::after,
.cast-grid article::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.8s ease;
  pointer-events: none;
}

.movie-grid article:hover::after,
.featured-grid article:hover::after,
.cast-grid article:hover::after {
  left: 100%;
}

/* 链接下划线动画 */
nav ul li a::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s ease;
}

nav ul li a:hover::after {
  width: 60%;
}

/* 按钮样式 */
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  border: none;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(255, 77, 109, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255, 77, 109, 0.5);
}

/* 无障碍 */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}
```