```css
/* ===== 芝麻影院 完整样式表 ===== */
/* 设计理念：现代影视平台 · 科技感 · 沉浸式观影体验 */
/* 支持暗色模式 · 响应式 · 滚动动画 · 毛玻璃效果 */

/* ---------- CSS变量 & 主题 ---------- */
:root {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-glass: rgba(255, 255, 255, 0.6);
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-heading: #0f172a;
  --text-link: #3b82f6;
  --text-footer: #94a3b8;
  --footer-bg: #0f172a;
  --border-color: #e2e8f0;
  --btn-bg: #3b82f6;
  --btn-text: #ffffff;
  --hover-bg: #2563eb;
  --nav-bg: rgba(255, 255, 255, 0.8);
  --banner-gradient: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 50%, #06b6d4 100%);
  --banner-text: #ffffff;
  --card-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
  --card-hover-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
  --code-bg: #f8fafc;
  --faq-border: #e2e8f0;
  --glass-blur: blur(16px);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: rgba(30, 41, 59, 0.9);
  --bg-glass: rgba(15, 23, 42, 0.7);
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-heading: #f8fafc;
  --text-link: #60a5fa;
  --text-footer: #94a3b8;
  --footer-bg: #020617;
  --border-color: #334155;
  --btn-bg: #3b82f6;
  --btn-text: #ffffff;
  --hover-bg: #60a5fa;
  --nav-bg: rgba(15, 23, 42, 0.85);
  --banner-gradient: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #0e7490 100%);
  --card-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
  --card-hover-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
  --code-bg: #1e293b;
  --faq-border: #334155;
}

/* ---------- 基础重置 ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.75;
  font-size: 16px;
  transition: background-color 0.4s ease, color 0.4s ease;
  overflow-x: hidden;
}

img,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

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

a:hover {
  color: var(--hover-bg);
}

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input {
  font-family: inherit;
}

/* ---------- 工具类 ---------- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.text-muted {
  color: var(--text-muted) !important;
}

.text-secondary {
  color: var(--text-secondary) !important;
}

.text-heading {
  color: var(--text-heading) !important;
}

/* ---------- 导航栏 ---------- */
nav {
  background: var(--nav-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border-color);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 68px;
  gap: 1rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-heading);
  text-decoration: none;
  letter-spacing: 0.5px;
  background: var(--banner-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
  transition: transform 0.3s ease;
}

.logo:hover {
  transform: scale(1.03);
}

.nav-links {
  display: flex;
  gap: 1.8rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 0.3rem 0;
  transition: color 0.3s;
}

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

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

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-secondary);
  border-radius: 999px;
  padding: 0.35rem 0.5rem 0.35rem 0.2rem;
  border: 1px solid var(--border-color);
  transition: border-color 0.3s, box-shadow 0.3s;
  overflow: hidden;
}

.search-box:focus-within {
  border-color: var(--btn-bg);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.search-box input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  padding: 0.4rem 0.8rem;
  width: 140px;
  font-size: 0.9rem;
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-box button {
  background: var(--btn-bg);
  color: var(--btn-text);
  border: none;
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.85rem;
  transition: background 0.3s;
}

.search-box button:hover {
  background: var(--hover-bg);
}

.icon-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
  color: var(--text-primary);
  font-size: 1rem;
  transition: all 0.3s;
  line-height: 1;
}

.icon-btn:hover {
  background: var(--bg-card);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.mobile-menu-btn {
  display: none;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-primary);
  padding: 0.3rem 0.6rem;
  line-height: 1;
  transition: all 0.3s;
}

.mobile-menu-btn:hover {
  background: var(--bg-card);
}

.mobile-nav-links {
  display: none;
  flex-direction: column;
  background: var(--nav-bg);
  backdrop-filter: var(--glass-blur);
  padding: 1rem 1.5rem;
  gap: 0.8rem;
  border-top: 1px solid var(--border-color);
  animation: slideDown 0.3s ease;
}

.mobile-nav-links a {
  color: var(--text-primary);
  padding: 0.5rem 0;
  font-weight: 500;
  border-bottom: 1px solid var(--border-color);
  transition: padding-left 0.3s;
}

.mobile-nav-links a:hover {
  padding-left: 0.5rem;
  color: var(--text-link);
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  padding: 1rem 0;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1rem;
}

.breadcrumb a {
  color: var(--text-link);
  text-decoration: none;
}

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

/* ---------- Banner ---------- */
.banner {
  background: var(--banner-gradient);
  border-radius: var(--radius-lg);
  padding: 3.5rem 2.5rem;
  margin: 2rem 0;
  color: var(--banner-text);
  box-shadow: 0 12px 40px rgba(30, 58, 138, 0.25);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
}

.banner::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
}

.banner h1 {
  font-size: 2.6rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
  color: #ffffff;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.banner p {
  font-size: 1.15rem;
  max-width: 680px;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.3);
  color: #f0f9ff;
  line-height: 1.7;
}

.banner .btn-group {
  margin-top: 1.8rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ---------- 按钮 ---------- */
.btn {
  background-color: var(--btn-bg);
  color: var(--btn-text);
  padding: 0.7rem 1.8rem;
  border-radius: 999px;
  border: none;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.25);
  text-align: center;
}

.btn:hover {
  background-color: var(--hover-bg);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.35);
  color: #fff;
}

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

.btn-outline {
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.8);
  color: #ffffff;
  box-shadow: none;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: #ffffff;
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* ---------- 标题体系 ---------- */
h2 {
  font-size: 1.8rem;
  color: var(--text-heading);
  margin: 2.5rem 0 1.2rem;
  border-left: 6px solid var(--btn-bg);
  padding-left: 1rem;
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.3rem;
  color: var(--text-heading);
  margin: 1.5rem 0 0.8rem;
  font-weight: 600;
  line-height: 1.4;
}

h4 {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin: 1.2rem 0 0.5rem;
  font-weight: 600;
}

p {
  color: var(--text-primary);
  margin-bottom: 1rem;
  line-height: 1.7;
}

/* ---------- 卡片网格 ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--card-shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.card h3 {
  margin-top: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* ---------- 文章列表 ---------- */
.article-list {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.article-item {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
  box-shadow: var(--card-shadow);
}

.article-item:hover {
  transform: translateX(4px);
  box-shadow: var(--card-hover-shadow);
  border-color: var(--btn-bg);
}

.article-item h4 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
  color: var(--text-heading);
  transition: color 0.3s;
}

.article-item:hover h4 {
  color: var(--text-link);
}

.article-meta {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.article-item .btn {
  margin-top: 0.5rem;
  padding: 0.4rem 1.2rem;
  font-size: 0.85rem;
  display: inline-block;
}

/* ---------- FAQ ---------- */
.faq-item {
  border: 1px solid var(--faq-border);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  background: var(--bg-card);
  overflow: hidden;
  transition: all 0.3s ease;
  box-shadow: var(--card-shadow);
}

.faq-item:hover {
  border-color: var(--btn-bg);
}

.faq-question {
  padding: 1rem 1.5rem;
  font-weight: 600;
  cursor: pointer;
  background: var(--bg-secondary);
  color: var(--text-heading);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.3s;
  font-size: 1rem;
  user-select: none;
}

.faq-question span {
  font-size: 0.8rem;
  transition: transform 0.3s ease;
  opacity: 0.7;
}

.faq-item.open .faq-question span {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 1rem 1.5rem;
  color: var(--text-primary);
  border-top: 1px solid var(--faq-border);
  display: none;
  line-height: 1.7;
  font-size: 0.95rem;
  animation: fadeIn 0.3s ease;
}

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

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 表格 ---------- */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--card-shadow);
}

th,
td {
  border: 1px solid var(--border-color);
  padding: 0.75rem 1rem;
  text-align: left;
  color: var(--text-primary);
}

th {
  background: var(--bg-secondary);
  color: var(--text-heading);
  font-weight: 600;
}

/* ---------- Footer ---------- */
footer {
  background-color: var(--footer-bg);
  color: var(--text-footer);
  padding: 3rem 0 2rem;
  margin-top: 4rem;
  border-top: 1px solid var(--border-color);
  position: relative;
}

footer a {
  color: #93c5fd;
  text-decoration: none;
  transition: color 0.3s;
}

footer a:hover {
  color: #ffffff;
  text-decoration: underline;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-grid h4 {
  color: #f9fafb;
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.footer-grid p {
  color: var(--text-footer);
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.footer-bottom {
  border-top: 1px solid #334155;
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
}

/* ---------- 返回顶部 ---------- */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--btn-bg);
  color: var(--btn-text);
  border: none;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  z-index: 200;
  display: none;
  transition: all 0.3s ease;
  line-height: 1;
}

.back-to-top:hover {
  background: var(--hover-bg);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* ---------- 数字动画 ---------- */
.stat-number {
  font-weight: 800;
  font-size: 2.2rem;
  color: var(--text-heading);
  display: inline-block;
  min-width: 3ch;
}

/* ---------- 滚动动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- SVG占位 ---------- */
.svg-placeholder {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  color: var(--text-heading);
  font-weight: 600;
  border: 1px solid var(--border-color);
  margin: 1.5rem 0;
  min-height: 120px;
  transition: all 0.3s ease;
}

.svg-placeholder:hover {
  box-shadow: var(--card-hover-shadow);
}

/* ---------- 里程碑 ---------- */
section.reveal > div[style] {
  display: flex;
  gap: 3rem;
  flex-wrap: wrap;
  margin: 1.5rem 0;
}

section.reveal > div[style] > div {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem 2rem;
  text-align: center;
  box-shadow: var(--card-shadow);
  transition: all 0.3s ease;
  flex: 1;
  min-width: 150px;
}

section.reveal > div[style] > div:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-hover-shadow);
}

section.reveal > div[style] > div .stat-number {
  display: block;
  margin-bottom: 0.3rem;
}

/* ---------- 响应式 ---------- */
@media (max-width: 768px) {
  .nav-links,
  .nav-actions .search-box {
    display: none;
  }

  .mobile-menu-btn {
    display: block;
  }

  .nav-container {
    height: 60px;
  }

  .logo {
    font-size: 1.3rem;
  }

  .banner {
    padding: 2rem 1.5rem;
    margin: 1.5rem 0;
    border-radius: var(--radius-md);
  }

  .banner h1 {
    font-size: 1.8rem;
  }

  .banner p {
    font-size: 1rem;
  }

  h2 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
  }

  .card-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .article-item {
    padding: 1.2rem;
  }

  .faq-question {
    padding: 0.9rem 1.2rem;
    font-size: 0.95rem;
  }

  .faq-answer {
    padding: 0.9rem 1.2rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 0.5rem;
  }

  .back-to-top {
    bottom: 1.5rem;
    right: 1.5rem;
    width: 42px;
    height: 42px;
    font-size: 1.2rem;
  }

  .banner .btn-group {
    flex-direction: column;
    align-items: stretch;
  }

  .banner .btn-group .btn {
    text-align: center;
  }

  section.reveal > div[style] {
    gap: 1rem;
  }

  section.reveal > div[style] > div {
    padding: 1rem 1.5rem;
    min-width: 120px;
  }

  .stat-number {
    font-size: 1.8rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

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

  .banner p {
    font-size: 0.9rem;
  }

  .search-box input {
    width: 100px;
  }

  .search-box button {
    padding: 0.3rem 0.6rem;
    font-size: 0.8rem;
  }

  h2 {
    font-size: 1.3rem;
  }

  .card {
    padding: 1.2rem;
  }
}

/* ---------- 打印样式 ---------- */
@media print {
  .back-to-top,
  .mobile-menu-btn,
  .icon-btn,
  .search-box {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .banner {
    background: #f0f0f0;
    color: black;
    box-shadow: none;
  }
}

/* ---------- 无障碍 & 焦点状态 ---------- */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(59, 130, 246, 0.5);
  outline-offset: 2px;
  border-radius: 4px;
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 5px;
}

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

/* 选择文本 */
::selection {
  background: var(--btn-bg);
  color: white;
}
```