```css

/* ===== 小米影院 · 主题样式 ===== */
/* 风格: 深海幻境 + 暗金质感 */
/* 渐变Banner + 毛玻璃 + 圆角卡片 + 响应式 + 暗色模式 */

:root {
  --bg-body: #f2f6fd;
  --bg-card: rgba(255, 255, 255, 0.72);
  --bg-card-solid: #ffffff;
  --bg-header: rgba(255, 255, 255, 0.6);
  --bg-footer: #0f1c2e;
  --text-primary: #1f2937;
  --text-secondary: #2c3e50;
  --text-heading: #0b1a2a;
  --text-footer: #e5e7eb;
  --text-link: #0b4d8a;
  --text-link-hover: #00274d;
  --border-light: rgba(15, 28, 46, 0.1);
  --btn-bg: #0f1c2e;
  --btn-text: #ffffff;
  --btn-hover-bg: #1f3a5f;
  --accent: #b8860b;
  --accent-glow: rgba(184, 134, 11, 0.2);
  --nav-bg: rgba(255, 255, 255, 0.7);
  --nav-text: #1f2937;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
  --shadow-hover: 0 12px 30px rgba(0, 0, 0, 0.1);
  --card-title: #1f2937;
  --card-text: #2d3748;
  --glass-blur: blur(10px);
  --hero-gradient: linear-gradient(135deg, #0b1a2a 0%, #1f3a5f 40%, #2c5f8a 100%);
  --hero-glow: radial-gradient(circle at 20% 30%, rgba(184, 134, 11, 0.15) 0%, transparent 40%);
  --card-border: rgba(255, 255, 255, 0.3);
  --accent-gold: #f1c40f;
  --accent-gold-dark: #b8860b;
  --overlay-dark: rgba(15, 28, 46, 0.6);
}

[data-theme="dark"] {
  --bg-body: #0b111f;
  --bg-card: rgba(26, 35, 50, 0.8);
  --bg-card-solid: #1a2332;
  --bg-header: rgba(17, 26, 43, 0.7);
  --bg-footer: #0a0f1c;
  --text-primary: #e2e8f0;
  --text-secondary: #cbd5e1;
  --text-heading: #f8fafc;
  --text-footer: #cbd5e1;
  --text-link: #7cb3e8;
  --text-link-hover: #a0c8f0;
  --border-light: rgba(148, 163, 184, 0.2);
  --btn-bg: #2c3e50;
  --btn-text: #f1f5f9;
  --btn-hover-bg: #3e5a74;
  --accent: #e6b422;
  --accent-glow: rgba(230, 180, 34, 0.15);
  --nav-bg: rgba(17, 26, 43, 0.7);
  --nav-text: #e2e8f0;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.45);
  --card-title: #f1f5f9;
  --card-text: #d1dce6;
  --hero-gradient: linear-gradient(135deg, #060b14 0%, #0f1c2e 50%, #1b2f4a 100%);
  --card-border: rgba(255, 255, 255, 0.08);
  --accent-gold: #f1c40f;
  --overlay-dark: rgba(0, 0, 0, 0.5);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-body);
  color: var(--text-primary);
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  transition: background 0.3s ease, color 0.3s ease;
  background-image: 
    radial-gradient(at 80% 10%, rgba(184, 134, 11, 0.03) 0%, transparent 50%),
    radial-gradient(at 20% 90%, rgba(15, 28, 46, 0.03) 0%, transparent 50%);
}

a {
  color: var(--text-link);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--text-link-hover);
  text-decoration: underline;
}

.container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== 头部导航 (毛玻璃) ===== */
.site-header {
  background-color: var(--bg-header);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-light);
  transition: background 0.3s, border-color 0.3s;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.6rem;
  color: var(--text-heading);
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.logo-area svg {
  display: block;
  border-radius: 6px;
  transition: transform 0.3s;
}

.logo-area svg:hover {
  transform: scale(1.05);
}

.search-box {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  padding: 0.3rem 0.8rem;
  border-radius: 40px;
  backdrop-filter: blur(4px);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.search-box input {
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 0.95rem;
  padding: 0.4rem 0.5rem;
  width: 210px;
  outline: none;
}

.search-box input::placeholder {
  color: var(--text-secondary);
  opacity: 0.7;
}

.search-box button {
  background: var(--btn-bg);
  border: none;
  color: var(--btn-text);
  padding: 0.4rem 1rem;
  border-radius: 30px;
  cursor: pointer;
  font-weight: 500;
  transition: background 0.2s, transform 0.2s;
}

.search-box button:hover {
  background: var(--btn-hover-bg);
  transform: scale(1.03);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  font-weight: 500;
  color: var(--nav-text);
}

.nav-links a {
  color: var(--nav-text);
  position: relative;
  padding: 0.3rem 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s;
}

.nav-links a:hover {
  color: var(--text-link);
  text-decoration: none;
}

.nav-links a:hover::after {
  width: 100%;
}

.theme-toggle button {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 30px;
  padding: 0.3rem 1rem;
  color: var(--text-primary);
  cursor: pointer;
  font-size: 0.9rem;
  backdrop-filter: blur(4px);
  transition: background 0.2s, transform 0.2s, border-color 0.2s;
}

.theme-toggle button:hover {
  background: var(--bg-card-solid);
  transform: scale(1.05);
  border-color: var(--accent);
}

.mobile-menu-icon {
  display: none;
  font-size: 2rem;
  cursor: pointer;
  color: var(--text-primary);
  line-height: 1;
  padding: 0 0.2rem;
}

.mobile-nav {
  display: none;
  flex-direction: column;
  width: 100%;
  padding: 0.5rem 1rem;
  border-top: 1px solid var(--border-light);
  background: var(--bg-header);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

.mobile-nav a {
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-primary);
  font-weight: 500;
  transition: padding-left 0.2s, color 0.2s;
}

.mobile-nav a:hover {
  padding-left: 0.8rem;
  color: var(--text-link);
  text-decoration: none;
}

.mobile-nav a:last-child {
  border-bottom: none;
}

/* ===== 主视觉 Hero (渐变 + 毛玻璃) ===== */
.hero {
  background: var(--hero-gradient), var(--hero-glow);
  padding: 3.5rem 0;
  margin-bottom: 2.5rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(circle, rgba(241, 196, 15, 0.05) 0%, transparent 60%);
  pointer-events: none;
}

.hero-content {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2rem;
  color: white;
  position: relative;
  z-index: 1;
}

.hero-text {
  flex: 1 1 350px;
}

.hero-text h1 {
  font-size: 2.8rem;
  color: #ffffff;
  margin-bottom: 0.8rem;
  text-shadow: 2px 2px 12px rgba(0, 0, 0, 0.4);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.hero-text p {
  font-size: 1.15rem;
  color: #e2e8f0;
  max-width: 700px;
  opacity: 0.9;
  text-shadow: 1px 1px 4px rgba(0,0,0,0.2);
}

.hero-badge {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 50px;
  padding: 0.5rem 1.5rem;
  display: inline-block;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--accent-gold);
  font-weight: 600;
  margin-bottom: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 0.95rem;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.hero svg {
  border-radius: 16px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  transition: transform 0.5s ease;
}

.hero svg:hover {
  transform: translateY(-5px) scale(1.01);
}

/* ===== 区块标题 ===== */
.section-title {
  font-size: 2rem;
  color: var(--text-heading);
  border-left: 6px solid var(--accent);
  padding-left: 1rem;
  margin: 3rem 0 1.8rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--border-light), transparent);
  margin-left: 1rem;
}

/* ===== 卡片网格 ===== */
.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.8rem;
}

.card {
  background: var(--bg-card);
  border-radius: 20px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
}

.card:hover::before {
  opacity: 1;
}

.card h3 {
  color: var(--card-title);
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
  line-height: 1.4;
}

.card p {
  color: var(--card-text);
  font-size: 0.95rem;
}

.card a {
  font-weight: 600;
  display: inline-block;
  margin-top: 0.8rem;
  transition: transform 0.2s;
}

.card a:hover {
  transform: translateX(4px);
  text-decoration: none;
}

/* ===== 文章卡片 ===== */
.article-card {
  display: flex;
  flex-direction: column;
}

.article-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.4rem;
  line-height: 1.5;
  transition: color 0.2s;
}

.article-card:hover h3 {
  color: var(--accent);
}

.article-meta {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-top: 0.4rem;
  opacity: 0.8;
}

/* ===== FAQ 折叠面板 ===== */
details {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 0.8rem 1.2rem;
  margin-bottom: 0.8rem;
  backdrop-filter: blur(4px);
  transition: border-color 0.2s, box-shadow 0.2s;
}

details:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

details[open] {
  border-color: var(--accent);
  box-shadow: 0 4px 16px var(--accent-glow);
}

summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text-heading);
  list-style-position: inside;
  padding: 0.3rem 0;
  transition: color 0.2s;
  outline: none;
}

summary::-webkit-details-marker {
  color: var(--accent);
}

summary:hover {
  color: var(--accent);
}

details p {
  margin-top: 0.7rem;
  color: var(--text-primary);
  padding: 0.8rem;
  background: var(--bg-body);
  border-radius: 12px;
  border-left: 3px solid var(--accent);
}

/* ===== Footer ===== */
.site-footer {
  background-color: var(--bg-footer);
  color: var(--text-footer);
  padding: 3rem 0 2rem;
  margin-top: 5rem;
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-gold), transparent);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2.5rem;
}

.footer-grid h4 {
  color: #ffffff;
  margin-bottom: 1.2rem;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.footer-grid a {
  color: var(--text-footer);
  display: block;
  margin-bottom: 0.5rem;
  opacity: 0.8;
  font-size: 0.95rem;
  transition: opacity 0.2s, padding-left 0.2s;
}

.footer-grid a:hover {
  color: var(--accent-gold);
  opacity: 1;
  padding-left: 0.4rem;
  text-decoration: none;
}

.copyright {
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 2rem;
  margin-top: 2.5rem;
  color: #cbd5e1;
  font-size: 0.9rem;
}

/* ===== 数字动画区域 ===== */
.stats-area {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  background: var(--bg-card);
  padding: 2.5rem 1.5rem;
  border-radius: 28px;
  margin: 3rem 0;
  border: 1px solid var(--card-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
  gap: 1.5rem;
}

.stat-item {
  text-align: center;
  flex: 1 1 150px;
}

.stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--text-heading);
  line-height: 1.2;
  background: linear-gradient(135deg, var(--text-heading), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.95rem;
  letter-spacing: 0.05em;
}

/* ===== 按钮 ===== */
.btn {
  background: var(--btn-bg);
  color: var(--btn-text);
  padding: 0.7rem 1.8rem;
  border-radius: 60px;
  font-weight: 500;
  display: inline-block;
  transition: all 0.25s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  border: 1px solid transparent;
}

.btn:hover {
  background: var(--btn-hover-bg);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
  text-decoration: none;
}

.btn:active {
  transform: translateY(0);
}

/* ===== 返回顶部 ===== */
#backTop {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--btn-bg);
  color: white;
  padding: 12px 18px;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
  z-index: 2000;
  transition: all 0.25s ease;
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
}

#backTop.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#backTop:hover {
  background: var(--btn-hover-bg);
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.3);
}

/* ===== 信息表格 ===== */
.info-table {
  width: 100%;
  border-collapse: collapse;
}

.info-table td,
.info-table th {
  border: 1px solid var(--border-light);
  padding: 12px;
  color: var(--text-primary);
}

.info-table th {
  background: var(--bg-card);
  color: var(--text-heading);
  font-weight: 600;
}

/* ===== 工具类 ===== */
.hidden {
  display: none;
}

.text-center {
  text-align: center;
}

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }

/* ===== 滚动动画 (reveal) ===== */
.reveal {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

/* ===== 响应式设计 ===== */
@media (max-width: 1024px) {
  .hero-text h1 {
    font-size: 2.4rem;
  }
  
  .grid-4 {
    gap: 1.5rem;
  }
  
  .search-box input {
    width: 170px;
  }
}

@media (max-width: 900px) {
  .nav-links {
    display: none;
  }
  
  .mobile-menu-icon {
    display: block;
  }
  
  .mobile-nav.open {
    display: flex;
  }
  
  .search-box {
    order: 3;
    width: 100%;
    margin-top: 0.5rem;
  }
  
  .search-box input {
    flex: 1;
    width: auto;
  }
  
  .header-inner {
    gap: 0.8rem;
  }
  
  .hero {
    padding: 2.5rem 0;
  }
  
  .hero-text h1 {
    font-size: 2rem;
  }
  
  .section-title {
    font-size: 1.6rem;
  }
  
  .stats-area {
    padding: 1.5rem 1rem;
  }
  
  .stat-number {
    font-size: 2.2rem;
  }
}

@media (max-width: 600px) {
  .container {
    padding: 0 16px;
  }
  
  .hero-text h1 {
    font-size: 1.7rem;
  }
  
  .hero-text p {
    font-size: 1rem;
  }
  
  .hero-badge {
    font-size: 0.8rem;
    padding: 0.4rem 1rem;
  }
  
  .grid-4 {
    grid-template-columns: 1fr;
    gap: 1.2rem;
  }
  
  .card {
    padding: 1.2rem;
  }
  
  .section-title {
    font-size: 1.4rem;
    margin: 2rem 0 1.2rem;
  }
  
  .footer-grid {
    gap: 1.8rem;
  }
  
  #backTop {
    bottom: 20px;
    right: 20px;
    padding: 10px 14px;
  }
  
  .logo-area {
    font-size: 1.3rem;
  }
  
  .logo-area svg {
    width: 100px;
    height: auto;
  }
  
  .theme-toggle button {
    padding: 0.3rem 0.8rem;
  }
  
  .stat-number {
    font-size: 1.8rem;
  }
  
  .stats-area {
    gap: 1rem;
  }
}

/* ===== 暗色模式微调 ===== */
[data-theme="dark"] .card {
  background: var(--bg-card);
  border-color: var(--card-border);
}

[data-theme="dark"] .card:hover {
  border-color: var(--accent);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .search-box input {
  color: var(--text-primary);
}

[data-theme="dark"] .hero-badge {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] details p {
  background: rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .btn {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

/* ===== 鼠标跟随光晕 (PC端) ===== */
@media (hover: hover) and (min-width: 1024px) {
  .card {
    position: relative;
  }
  
  .card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at var(--x, 50%) var(--y, 50%), var(--accent-glow) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
    border-radius: 20px;
  }
  
  .card:hover::after {
    opacity: 1;
  }
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--accent);
  border-radius: 10px;
  border: 2px solid var(--bg-body);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-gold-dark);
}

/* ===== 平滑显示 ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-content {
  animation: fadeInUp 0.6s ease-out;
}

.section-title {
  animation: fadeInUp 0.4s ease-out;
}

/* ===== 打印样式 ===== */
@media print {
  .site-header,
  .hero,
  #backTop,
  .site-footer,
  .theme-toggle,
  .mobile-menu-icon,
  .search-box,
  .btn {
    display: none !important;
  }
  
  body {
    background: white;
    color: black;
  }
  
  .card {
    border: 1px solid #ddd;
    break-inside: avoid;
  }
}

```