```css
/* ===== 567电影网 全局样式 ===== */
:root {
  --primary: #2563eb;
  --primary-light: #3b82f6;
  --primary-dark: #1e3a8a;
  --accent: #facc15;
  --bg-light: #f9fafb;
  --bg-dark: #111827;
  --card-light: #ffffff;
  --card-dark: #1e293b;
  --text-light: #1f2937;
  --text-dark: #e2e8f0;
  --text-muted-light: #4b5563;
  --text-muted-dark: #9ca3af;
  --border-light: #e5e7eb;
  --border-dark: #334155;
  --shadow-light: 0 6px 14px rgba(0,0,0,0.04);
  --shadow-dark: 0 6px 14px rgba(0,0,0,0.2);
  --radius: 1rem;
  --radius-sm: 0.8rem;
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  background-color: var(--bg-light);
  color: var(--text-light);
  line-height: 1.7;
  transition: background-color var(--transition), color var(--transition);
  overflow-x: hidden;
}

body.dark-mode {
  background-color: var(--bg-dark);
  color: var(--text-dark);
}

h1, h2, h3, h4 {
  color: #0f172a;
  font-weight: 650;
  line-height: 1.3;
  transition: color var(--transition);
}

body.dark-mode h1,
body.dark-mode h2,
body.dark-mode h3,
body.dark-mode h4 {
  color: #ffffff;
}

h1 {
  font-size: clamp(1.8rem, 4vw, 2.2rem);
  margin: 0.8rem 0;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: clamp(1.4rem, 3vw, 1.7rem);
  margin: 1.5rem 0 0.8rem;
  border-left: 6px solid var(--primary);
  padding-left: 0.7rem;
  position: relative;
}

h2::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 40px;
  height: 2px;
  background: var(--primary-light);
  opacity: 0.3;
}

body.dark-mode h2 {
  border-left-color: #60a5fa;
}

h3 {
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  margin: 1.2rem 0 0.5rem;
}

h4 {
  font-size: clamp(1rem, 1.5vw, 1.1rem);
  margin: 1rem 0 0.3rem;
}

p {
  margin: 0.9rem 0;
  color: #243447;
  transition: color var(--transition);
}

body.dark-mode p {
  color: #d1d5db;
}

a {
  color: #1d4ed8;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

body.dark-mode a {
  color: #93c5fd;
}

a:hover {
  text-decoration: none;
  color: var(--accent);
}

/* 容器 */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}

/* ===== 导航栏 ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  padding: 0.8rem 0;
  transition: background var(--transition), box-shadow var(--transition);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

body.dark-mode .navbar {
  background: rgba(30, 41, 59, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.logo {
  font-weight: 700;
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  color: #0f172a;
  transition: color var(--transition);
  letter-spacing: -0.5px;
}

body.dark-mode .logo {
  color: #f8fafc;
}

.logo:hover {
  transform: scale(1.02);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--text-light);
  font-weight: 500;
  position: relative;
  padding: 0.3rem 0;
}

body.dark-mode .nav-links a {
  color: #d1d5db;
}

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

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

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

body.dark-mode .nav-links a:hover {
  color: #60a5fa;
}

/* 搜索框 */
.search-box {
  display: flex;
  align-items: center;
  background: rgba(243, 244, 246, 0.9);
  border-radius: 2rem;
  padding: 0.2rem 0.5rem;
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

body.dark-mode .search-box {
  background: rgba(51, 65, 85, 0.9);
  border-color: rgba(255, 255, 255, 0.1);
}

.search-box:focus-within {
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
  border-color: var(--primary);
}

.search-box input {
  border: none;
  background: transparent;
  padding: 0.4rem 0.8rem;
  color: #111827;
  outline: none;
  min-width: 120px;
  font-size: 0.9rem;
}

body.dark-mode .search-box input {
  color: #f9fafb;
}

.search-box input::placeholder {
  color: #9ca3af;
}

body.dark-mode .search-box input::placeholder {
  color: #64748b;
}

.search-box button {
  background: var(--primary);
  border: none;
  border-radius: 2rem;
  padding: 0.3rem 1rem;
  color: white;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.9rem;
}

.search-box button:hover {
  background: var(--primary-dark);
  transform: scale(1.05);
}

/* 主题切换按钮 */
.theme-toggle {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 2rem;
  padding: 0.3rem 0.8rem;
  font-size: 1rem;
  cursor: pointer;
  color: #334155;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

body.dark-mode .theme-toggle {
  border-color: #475569;
  color: #e2e8f0;
  background: rgba(255, 255, 255, 0.05);
}

.theme-toggle:hover {
  transform: scale(1.1) rotate(15deg);
}

/* 移动端菜单按钮 */
.mobile-menu {
  display: none;
  background: none;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: var(--text-light);
  transition: color var(--transition);
  padding: 0.3rem;
  border-radius: 0.5rem;
}

body.dark-mode .mobile-menu {
  color: #f1f5f9;
}

.mobile-menu:hover {
  background: rgba(0, 0, 0, 0.05);
}

body.dark-mode .mobile-menu:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* ===== Banner 区域 ===== */
.banner {
  background: linear-gradient(145deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  margin: 1.5rem 0;
  color: white;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.8s ease;
}

.banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(5deg); }
}

.banner h2 {
  color: #ffffff;
  border-left: none;
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin: 0.5rem 0;
  position: relative;
  z-index: 1;
}

.banner p {
  color: #f1f5f9;
  font-size: clamp(1rem, 2vw, 1.1rem);
  position: relative;
  z-index: 1;
}

.banner .btn {
  background: var(--accent);
  color: #0f172a;
  border-radius: 2rem;
  padding: 0.6rem 1.8rem;
  font-weight: 600;
  display: inline-block;
  position: relative;
  z-index: 1;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.banner .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
  background: #eab308;
}

/* ===== 统计区域 ===== */
.stats {
  display: flex;
  gap: clamp(1rem, 3vw, 2rem);
  background: linear-gradient(135deg, #eef2ff, #e0e7ff);
  padding: 1.2rem;
  border-radius: var(--radius);
  margin: 1.5rem 0;
  flex-wrap: wrap;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(10px);
}

body.dark-mode .stats {
  background: linear-gradient(135deg, #1e293b, #334155);
  border-color: rgba(255, 255, 255, 0.05);
}

.stats > div {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  color: var(--text-light);
}

body.dark-mode .stats > div {
  color: var(--text-dark);
}

.stat {
  font-weight: 700;
  color: var(--primary);
  font-size: clamp(1.5rem, 3vw, 2rem);
  transition: color var(--transition);
  text-shadow: 0 2px 4px rgba(37, 99, 235, 0.1);
}

body.dark-mode .stat {
  color: #bfdbfe;
}

/* ===== 卡片网格 ===== */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(270px, 100%), 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.card {
  background: var(--card-light);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-light);
  transition: all 0.3s ease;
  border: 1px solid var(--border-light);
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.6s ease;
  animation-fill-mode: both;
}

body.dark-mode .card {
  background: var(--card-dark);
  border-color: var(--border-dark);
  box-shadow: var(--shadow-dark);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.card:hover::before {
  transform: scaleX(1);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

body.dark-mode .card:hover {
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
}

.card h3 {
  margin-top: 0;
  color: #0f172a;
  font-size: 1.2rem;
}

body.dark-mode .card h3 {
  color: #f1f5f9;
}

.card p {
  color: #334155;
  font-size: 0.95rem;
}

body.dark-mode .card p {
  color: #cbd5e1;
}

/* 卡片动画延迟 */
.grid .card:nth-child(1) { animation-delay: 0.1s; }
.grid .card:nth-child(2) { animation-delay: 0.2s; }
.grid .card:nth-child(3) { animation-delay: 0.3s; }
.grid .card:nth-child(4) { animation-delay: 0.4s; }

/* ===== 表格 ===== */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

th {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  padding: 0.8rem;
  text-align: left;
  font-weight: 600;
}

td {
  border-bottom: 1px solid #d1d5db;
  padding: 0.8rem;
  color: #1f2937;
  background: rgba(255, 255, 255, 0.5);
}

body.dark-mode td {
  border-color: #4b5563;
  color: #e5e7eb;
  background: rgba(255, 255, 255, 0.02);
}

tr:hover td {
  background: rgba(37, 99, 235, 0.05);
}

body.dark-mode tr:hover td {
  background: rgba(37, 99, 235, 0.1);
}

/* ===== 页脚 ===== */
.footer {
  background: linear-gradient(135deg, #0f172a, #1e293b);
  color: #cbd5e1;
  padding: 2.5rem 0;
  margin-top: 2rem;
  border-radius: 1rem 1rem 0 0;
  position: relative;
  overflow: hidden;
}

body.dark-mode .footer {
  background: linear-gradient(135deg, #0b1120, #111827);
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
}

.footer a {
  color: #94a3b8;
  transition: color 0.3s ease;
}

.footer a:hover {
  color: var(--accent);
}

.footer h4 {
  color: #ffffff;
  font-size: 1.3rem;
}

.footer p {
  color: #94a3b8;
  font-size: 0.95rem;
}

/* ===== FAQ 样式 ===== */
.faq-item {
  background: var(--card-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 1rem 1.2rem;
  margin-bottom: 1rem;
  transition: all 0.3s ease;
  cursor: pointer;
  animation: fadeInUp 0.5s ease;
  animation-fill-mode: both;
}

body.dark-mode .faq-item {
  background: #18212f;
  border-color: var(--border-dark);
}

.faq-item:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.1);
}

.faq-question {
  font-weight: 600;
  color: #0f172a;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1rem;
  transition: color 0.3s ease;
}

body.dark-mode .faq-question {
  color: #f1f5f9;
}

.faq-question span {
  transition: transform 0.3s ease;
  font-size: 0.8rem;
  color: var(--primary);
}

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

.faq-answer {
  margin-top: 0.7rem;
  color: #243447;
  line-height: 1.8;
  font-size: 0.95rem;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
  padding-top: 0.8rem;
  animation: fadeIn 0.3s ease;
}

body.dark-mode .faq-answer {
  color: #cbd5e1;
  border-top-color: rgba(255, 255, 255, 0.05);
}

/* ===== 通用按钮 ===== */
.btn {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  padding: 0.6rem 1.4rem;
  border-radius: 2rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.95rem;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
  text-align: center;
}

body.dark-mode .btn {
  background: linear-gradient(135deg, #3b82f6, var(--primary-dark));
  color: white;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.3);
  color: white;
}

/* ===== 文章列表 ===== */
.article-list article {
  border-bottom: 1px solid var(--border-light);
  padding: 1rem 0;
  transition: all 0.3s ease;
  animation: fadeInUp 0.5s ease;
  animation-fill-mode: both;
}

body.dark-mode .article-list article {
  border-color: var(--border-dark);
}

.article-list article:hover {
  padding-left: 1rem;
  border-left: 3px solid var(--primary);
}

.article-list article h3 {
  margin: 0.3rem 0;
  font-size: 1.1rem;
}

.article-list article h3 a {
  color: inherit;
  transition: color 0.3s ease;
}

.article-list article h3 a:hover {
  color: var(--primary);
}

.article-list article p {
  color: var(--text-muted-light);
  font-size: 0.9rem;
  margin: 0.3rem 0;
}

body.dark-mode .article-list article p {
  color: var(--text-muted-dark);
}

/* ===== 面包屑 ===== */
.breadcrumb {
  font-size: 0.9rem;
  color: #475569;
  padding: 1rem 0;
  transition: color var(--transition);
}

body.dark-mode .breadcrumb {
  color: #9ca3af;
}

.breadcrumb a {
  color: inherit;
  transition: color 0.3s ease;
}

.breadcrumb a:hover {
  color: var(--primary);
}

/* ===== 返回顶部 ===== */
.to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: linear-gradient(135deg, #1f2937, #374151);
  color: white;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.5rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
  z-index: 999;
  border: 2px solid rgba(255, 255, 255, 0.1);
  opacity: 0;
  visibility: hidden;
}

body.dark-mode .to-top {
  background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
  color: #0f172a;
}

.to-top.show {
  opacity: 1;
  visibility: visible;
}

.to-top:hover {
  transform: translateY(-3px) scale(1.1);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

/* ===== 图片占位符 ===== */
.svg-placeholder {
  background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
  border-radius: 0.5rem;
  text-align: center;
  padding: 0.5rem;
  color: #0f172a;
}

body.dark-mode .svg-placeholder {
  background: linear-gradient(135deg, #334155, #475569);
  color: #f8fafc;
}

/* ===== 通用文字 ===== */
.text-muted {
  color: var(--text-muted-light);
  transition: color var(--transition);
}

body.dark-mode .text-muted {
  color: var(--text-muted-dark);
}

/* ===== 链接区域 ===== */
.link-section {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin: 2rem 0;
  padding-top: 1rem;
  border-top: 1px solid #d1d5db;
}

body.dark-mode .link-section {
  border-top-color: #4b5563;
}

.link-section a {
  padding: 0.3rem 0.8rem;
  border-radius: 0.5rem;
  background: rgba(37, 99, 235, 0.05);
  transition: all 0.3s ease;
}

.link-section a:hover {
  background: rgba(37, 99, 235, 0.1);
  text-decoration: none;
}

/* ===== 有序列表（HowTo） ===== */
ol {
  padding-left: 1.5rem;
  margin: 1rem 0;
}

ol li {
  margin: 0.5rem 0;
  padding-left: 0.5rem;
  position: relative;
  line-height: 1.8;
}

ol li::marker {
  color: var(--primary);
  font-weight: 700;
}

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

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

/* ===== 滚动动画 ===== */
.scroll-animate {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.scroll-animate.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 响应式设计 ===== */
@media (max-width: 1024px) {
  .container {
    padding: 0 15px;
  }
  
  .nav-flex {
    gap: 0.5rem;
  }
}

@media (max-width: 800px) {
  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem 0;
    animation: fadeIn 0.3s ease;
  }
  
  .mobile-menu {
    display: block;
  }
  
  .nav-links.open {
    display: flex;
  }
  
  .nav-links a {
    width: 100%;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  }
  
  body.dark-mode .nav-links a {
    border-bottom-color: rgba(255, 255, 255, 0.05);
  }
  
  .search-box {
    order: 3;
    width: 100%;
    margin-top: 0.5rem;
  }
  
  .search-box input {
    flex: 1;
    min-width: 0;
  }
  
  .stats {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  
  .banner {
    padding: 1.5rem;
  }
  
  .grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .footer > .container > div:first-child {
    flex-direction: column;
    gap: 1.5rem;
  }
  
  .to-top {
    bottom: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.6rem;
  }
  
  h2 {
    font-size: 1.3rem;
  }
  
  .banner .btn {
    padding: 0.5rem 1.2rem;
    font-size: 0.9rem;
  }
  
  .card {
    padding: 1.2rem;
  }
  
  .faq-item {
    padding: 0.8rem 1rem;
  }
  
  .faq-question {
    font-size: 0.9rem;
  }
}

/* ===== 打印样式 ===== */
@media print {
  .navbar,
  .to-top,
  .theme-toggle,
  .mobile-menu,
  .search-box {
    display: none !important;
  }
  
  body {
    background: white;
    color: black;
  }
  
  .container {
    max-width: 100%;
    padding: 0;
  }
  
  .banner {
    background: none;
    color: black;
    text-shadow: none;
  }
  
  .banner h2,
  .banner p {
    color: black;
  }
}

/* ===== 无障碍：减少动画 ===== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ===== 自定义滚动条 ===== */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.05);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, #cbd5e1, #94a3b8);
  border-radius: 10px;
  border: 2px solid transparent;
  background-clip: padding-box;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, #94a3b8, #64748b);
  background-clip: padding-box;
  border: 2px solid transparent;
}

body.dark-mode ::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
}

body.dark-mode ::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, #475569, #334155);
  background-clip: padding-box;
  border: 2px solid transparent;
}

body.dark-mode ::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, #64748b, #475569);
  background-clip: padding-box;
  border: 2px solid transparent;
}

/* ===== 选中文字样式 ===== */
::selection {
  background: var(--primary);
  color: white;
  text-shadow: none;
}

/* ===== 焦点可见性 ===== */
:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ===== 卡片图标颜色 ===== */
.card h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ===== FAQ 动画延迟 ===== */
.faq-item:nth-child(1) { animation-delay: 0.05s; }
.faq-item:nth-child(2) { animation-delay: 0.1s; }
.faq-item:nth-child(3) { animation-delay: 0.15s; }
.faq-item:nth-child(4) { animation-delay: 0.2s; }
.faq-item:nth-child(5) { animation-delay: 0.25s; }
.faq-item:nth-child(6) { animation-delay: 0.3s; }
.faq-item:nth-child(7) { animation-delay: 0.35s; }
.faq-item:nth-child(8) { animation-delay: 0.4s; }
.faq-item:nth-child(9) { animation-delay: 0.45s; }
.faq-item:nth-child(10) { animation-delay: 0.5s; }
.faq-item:nth-child(11) { animation-delay: 0.55s; }
.faq-item:nth-child(12) { animation-delay: 0.6s; }
.faq-item:nth-child(13) { animation-delay: 0.65s; }
.faq-item:nth-child(14) { animation-delay: 0.7s; }
.faq-item:nth-child(15) { animation-delay: 0.75s; }

/* ===== 文章动画延迟 ===== */
.article-list article:nth-child(1) { animation-delay: 0.05s; }
.article-list article:nth-child(2) { animation-delay: 0.1s; }
.article-list article:nth-child(3) { animation-delay: 0.15s; }
.article-list article:nth-child(4) { animation-delay: 0.2s; }
.article-list article:nth-child(5) { animation-delay: 0.25s; }
.article-list article:nth-child(6) { animation-delay: 0.3s; }
.article-list article:nth-child(7) { animation-delay: 0.35s; }
.article-list article:nth-child(8) { animation-delay: 0.4s; }
.article-list article:nth-child(9) { animation-delay: 0.45s; }
.article-list article:nth-child(10) { animation-delay: 0.5s; }
```