```css
/* ===== 全局变量与重置 ===== */
:root {
  --bg-light: #f8fafc;
  --bg-dark: #0f172a;
  --text-primary-light: #1e293b;
  --text-secondary-light: #475569;
  --text-heading-light: #0f172a;
  --text-link-light: #4f46e5;
  --text-btn-light: #ffffff;
  --card-bg-light: rgba(255, 255, 255, 0.85);
  --border-light: rgba(226, 232, 240, 0.8);
  --bg-footer-light: #1e293b;
  --text-footer-light: #f1f5f9;
  --shadow-light: 0 4px 24px rgba(0, 0, 0, 0.06);

  --text-primary-dark: #cbd5e1;
  --text-secondary-dark: #94a3b8;
  --text-heading-dark: #f8fafc;
  --text-link-dark: #a5b4fc;
  --text-btn-dark: #1e1b4b;
  --card-bg-dark: rgba(30, 41, 59, 0.9);
  --border-dark: rgba(51, 65, 85, 0.6);
  --bg-footer-dark: #020617;
  --text-footer-dark: #94a3b8;
  --shadow-dark: 0 4px 24px rgba(0, 0, 0, 0.3);

  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-banner: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #312e81 100%);
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--bg-light);
  color: var(--text-primary-light);
  line-height: 1.75;
  transition: background 0.4s ease, color 0.4s ease;
  min-height: 100vh;
}

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

/* ===== 通用排版 ===== */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-heading-light);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.02em;
  transition: color 0.4s ease;
}

body.dark-mode h1,
body.dark-mode h2,
body.dark-mode h3,
body.dark-mode h4,
body.dark-mode h5,
body.dark-mode h6 {
  color: var(--text-heading-dark);
}

p, li, .description, .card-text, .faq-answer, .howto-box li {
  color: var(--text-primary-light);
  transition: color 0.4s ease;
}

body.dark-mode p,
body.dark-mode li,
body.dark-mode .description,
body.dark-mode .card-text,
body.dark-mode .faq-answer,
body.dark-mode .howto-box li {
  color: var(--text-primary-dark);
}

a {
  color: var(--text-link-light);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease, opacity 0.3s ease;
}

a:hover {
  color: var(--text-link-light);
  opacity: 0.85;
  text-decoration: underline;
}

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

/* ===== 容器 ===== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

/* ===== 导航栏 ===== */
.nav-bar {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.04);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(226, 232, 240, 0.5);
  transition: background 0.4s ease, border-color 0.4s ease;
}

body.dark-mode .nav-bar {
  background: rgba(15, 23, 42, 0.85);
  border-bottom: 1px solid rgba(51, 65, 85, 0.4);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 16px;
}

.logo a {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--text-secondary-light);
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 30px;
  transition: var(--transition);
  font-size: 0.95rem;
}

.nav-links a:hover {
  background: rgba(79, 70, 229, 0.08);
  color: var(--text-link-light);
  text-decoration: none;
}

body.dark-mode .nav-links a {
  color: var(--text-secondary-dark);
}

body.dark-mode .nav-links a:hover {
  background: rgba(165, 180, 252, 0.1);
  color: var(--text-link-dark);
}

.nav-cta {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-shrink: 0;
}

/* ===== 按钮 ===== */
.btn {
  padding: 10px 22px;
  border-radius: 50px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  background: var(--gradient-primary);
  color: var(--text-btn-light);
  transition: var(--transition);
  font-size: 0.9rem;
  box-shadow: 0 2px 12px rgba(79, 70, 229, 0.3);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(79, 70, 229, 0.4);
}

body.dark-mode .btn {
  background: var(--gradient-primary);
  color: #fff;
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--text-link-light);
  color: var(--text-link-light);
  box-shadow: none;
}

.btn-outline:hover {
  background: rgba(79, 70, 229, 0.08);
  transform: translateY(-2px);
  box-shadow: none;
}

body.dark-mode .btn-outline {
  border-color: var(--text-link-dark);
  color: var(--text-link-dark);
}

.btn-light {
  background: rgba(255, 255, 255, 0.95);
  color: #1e1b4b;
  padding: 12px 32px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  transition: var(--transition);
  display: inline-block;
}

.btn-light:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
  background: #ffffff;
  text-decoration: none;
}

/* ===== 暗黑模式切换按钮 ===== */
.dark-toggle {
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(226, 232, 240, 0.8);
  border-radius: 50px;
  padding: 8px 14px;
  font-weight: 500;
  color: var(--text-primary-light);
  cursor: pointer;
  transition: var(--transition);
  font-size: 1.1rem;
  backdrop-filter: blur(10px);
}

.dark-toggle:hover {
  transform: rotate(20deg) scale(1.05);
}

body.dark-mode .dark-toggle {
  background: rgba(30, 41, 59, 0.6);
  border-color: rgba(51, 65, 85, 0.6);
  color: var(--text-primary-dark);
}

/* ===== 移动菜单按钮 ===== */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.8rem;
  color: var(--text-primary-light);
  cursor: pointer;
  padding: 4px 8px;
  transition: var(--transition);
}

body.dark-mode .mobile-menu-btn {
  color: var(--text-primary-dark);
}

/* ===== 移动导航 ===== */
.mobile-nav {
  display: none;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  padding: 20px 24px;
  gap: 8px;
  border-top: 1px solid var(--border-light);
}

body.dark-mode .mobile-nav {
  background: rgba(15, 23, 42, 0.95);
  border-top-color: var(--border-dark);
}

.mobile-nav a {
  padding: 12px 16px;
  border-radius: 12px;
  font-weight: 500;
  color: var(--text-primary-light);
  transition: var(--transition);
}

.mobile-nav a:hover {
  background: rgba(79, 70, 229, 0.08);
  text-decoration: none;
}

body.dark-mode .mobile-nav a {
  color: var(--text-primary-dark);
}

.mobile-nav.open {
  display: flex;
}

/* ===== Banner ===== */
.banner {
  background: var(--gradient-banner);
  padding: 80px 0 70px;
  margin-bottom: 40px;
  border-radius: 0 0 48px 48px;
  position: relative;
  overflow: hidden;
}

.banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.3) 0%, transparent 70%);
  animation: float 8s ease-in-out infinite;
}

.banner::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(236, 72, 153, 0.2) 0%, transparent 70%);
  animation: float 10s ease-in-out infinite reverse;
}

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

.banner-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  color: white;
  position: relative;
  z-index: 1;
}

.banner h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  color: #ffffff;
  margin-bottom: 16px;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.banner p {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(226, 232, 240, 0.9);
  max-width: 700px;
  margin-bottom: 28px;
  font-weight: 400;
}

/* ===== 搜索栏 ===== */
.search-bar {
  margin: -24px auto 40px;
  display: flex;
  justify-content: center;
  position: relative;
  z-index: 10;
  padding: 0 24px;
}

.search-box {
  display: flex;
  width: 100%;
  max-width: 560px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
  border-radius: 60px;
  padding: 6px 6px 6px 24px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.3);
  transition: var(--transition);
}

.search-box:focus-within {
  box-shadow: 0 8px 40px rgba(79, 70, 229, 0.2);
  border-color: rgba(79, 70, 229, 0.3);
}

body.dark-mode .search-box {
  background: rgba(30, 41, 59, 0.9);
  border-color: rgba(51, 65, 85, 0.6);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.search-box input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: 1rem;
  color: var(--text-primary-light);
  min-width: 0;
}

body.dark-mode .search-box input {
  color: var(--text-primary-dark);
}

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

body.dark-mode .search-box input::placeholder {
  color: var(--text-secondary-dark);
}

.search-box button {
  background: var(--gradient-primary);
  border: none;
  border-radius: 50px;
  padding: 12px 28px;
  color: white;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  flex-shrink: 0;
}

.search-box button:hover {
  transform: scale(1.03);
  box-shadow: 0 4px 16px rgba(79, 70, 229, 0.4);
}

/* ===== 区块标题 ===== */
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin: 50px 0 24px;
  border-left: 6px solid transparent;
  border-image: var(--gradient-primary) 1;
  padding-left: 20px;
  font-weight: 800;
}

.section-sub {
  color: var(--text-secondary-light);
  margin-bottom: 20px;
  font-size: 1.05rem;
}

body.dark-mode .section-sub {
  color: var(--text-secondary-dark);
}

/* ===== 卡片网格 ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 20px;
}

.card {
  background: var(--card-bg-light);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  box-shadow: var(--shadow-light);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
  border-color: rgba(79, 70, 229, 0.2);
}

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

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

body.dark-mode .card:hover {
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

.card h3 {
  margin-bottom: 14px;
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card p {
  margin-bottom: 12px;
  font-size: 0.95rem;
  line-height: 1.7;
}

.card .link {
  font-weight: 600;
  color: var(--text-link-light);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}

.card .link:hover {
  gap: 8px;
}

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

/* ===== 文章列表 ===== */
.article-list {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.article-item {
  background: var(--card-bg-light);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: var(--transition);
  flex-wrap: wrap;
}

.article-item:hover {
  transform: translateX(6px);
  border-color: rgba(79, 70, 229, 0.2);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

body.dark-mode .article-item {
  background: var(--card-bg-dark);
  border-color: var(--border-dark);
}

.article-item .date {
  color: var(--text-secondary-light);
  font-size: 0.85rem;
  white-space: nowrap;
  font-weight: 500;
}

body.dark-mode .article-item .date {
  color: var(--text-secondary-dark);
}

.article-item a {
  font-weight: 600;
  flex: 1;
  min-width: 200px;
}

.article-item span:last-child {
  color: var(--text-secondary-light);
  font-size: 0.9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 300px;
}

body.dark-mode .article-item span:last-child {
  color: var(--text-secondary-dark);
}

/* ===== FAQ ===== */
.faq-list {
  margin: 24px 0;
}

.faq-item {
  background: var(--card-bg-light);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 14px;
  transition: var(--transition);
  cursor: pointer;
}

.faq-item:hover {
  border-color: rgba(79, 70, 229, 0.3);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

body.dark-mode .faq-item {
  background: var(--card-bg-dark);
  border-color: var(--border-dark);
}

.faq-question {
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 8px;
  color: var(--text-heading-light);
  display: flex;
  align-items: center;
  gap: 10px;
}

.faq-question::before {
  content: 'Q';
  background: var(--gradient-primary);
  color: white;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
}

body.dark-mode .faq-question {
  color: var(--text-heading-dark);
}

.faq-answer {
  color: var(--text-primary-light);
  margin-top: 8px;
  padding-left: 38px;
  font-size: 0.95rem;
}

body.dark-mode .faq-answer {
  color: var(--text-primary-dark);
}

/* ===== HowTo ===== */
.howto-box {
  background: var(--card-bg-light);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 36px;
  margin: 30px 0;
  box-shadow: var(--shadow-light);
  position: relative;
  overflow: hidden;
}

.howto-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
}

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

.howto-box h2 {
  margin-bottom: 20px;
  font-size: 1.6rem;
}

.howto-box ol {
  margin-left: 20px;
  display: grid;
  gap: 12px;
}

.howto-box li {
  padding: 8px 0;
  line-height: 1.8;
}

.howto-box li strong {
  color: var(--text-heading-light);
  margin-right: 8px;
}

body.dark-mode .howto-box li strong {
  color: var(--text-heading-dark);
}

/* ===== 表格 ===== */
.info-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 30px 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-light);
}

.info-table th,
.info-table td {
  border: 1px solid var(--border-light);
  padding: 14px 18px;
  text-align: left;
}

body.dark-mode .info-table th,
body.dark-mode .info-table td {
  border-color: var(--border-dark);
}

.info-table th {
  background: rgba(248, 250, 252, 0.8);
  font-weight: 700;
  color: var(--text-heading-light);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

body.dark-mode .info-table th {
  background: rgba(30, 41, 59, 0.8);
  color: var(--text-heading-dark);
}

.info-table tr:hover {
  background: rgba(79, 70, 229, 0.03);
}

body.dark-mode .info-table tr:hover {
  background: rgba(99, 102, 241, 0.05);
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-footer-light);
  color: var(--text-footer-light);
  padding: 60px 0 30px;
  margin-top: 80px;
  position: relative;
  transition: background 0.4s ease, color 0.4s ease;
}

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

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer h4 {
  color: #ffffff;
  margin-bottom: 20px;
  font-size: 1.1rem;
  font-weight: 700;
  position: relative;
  padding-bottom: 10px;
}

.footer h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: 3px;
}

body.dark-mode .footer h4 {
  color: #f8fafc;
}

.footer a {
  color: #94a3b8;
  display: block;
  margin-bottom: 10px;
  transition: var(--transition);
  font-size: 0.95rem;
}

.footer a:hover {
  color: #ffffff;
  padding-left: 6px;
  text-decoration: none;
}

body.dark-mode .footer a {
  color: #94a3b8;
}

body.dark-mode .footer a:hover {
  color: #e2e8f0;
}

.footer-bottom {
  border-top: 1px solid rgba(148, 163, 184, 0.2);
  padding-top: 24px;
  font-size: 0.9rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: #94a3b8;
}

/* ===== 返回顶部 ===== */
.go-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--gradient-primary);
  color: white;
  border: none;
  border-radius: 50px;
  padding: 14px 20px;
  font-weight: bold;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(79, 70, 229, 0.4);
  z-index: 200;
  transition: var(--transition);
  font-size: 1.1rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
}

.go-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.go-top:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 8px 30px rgba(79, 70, 229, 0.5);
}

/* ===== 动画 ===== */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

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

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, #667eea, #764ba2);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, #5a67d8, #6b46a1);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .container {
    padding: 0 20px;
  }
  
  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  }
}

@media (max-width: 768px) {
  .nav-links,
  .nav-cta .btn-outline,
  .nav-cta .dark-toggle {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .mobile-nav.open {
    display: flex;
  }
  
  .banner {
    padding: 60px 0 50px;
    border-radius: 0 0 32px 32px;
  }
  
  .banner h1 {
    font-size: 2rem;
  }
  
  .search-bar {
    margin-top: -20px;
    padding: 0 16px;
  }
  
  .search-box {
    padding-left: 16px;
  }
  
  .search-box button {
    padding: 10px 20px;
  }
  
  .article-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  
  .article-item span:last-child {
    max-width: 100%;
    white-space: normal;
  }
  
  .howto-box {
    padding: 24px;
  }
  
  .footer-grid {
    gap: 30px;
  }
  
  .go-top {
    bottom: 20px;
    right: 20px;
    padding: 12px 16px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  
  .nav-container {
    height: 64px;
  }
  
  .logo a {
    font-size: 1.3rem;
  }
  
  .card {
    padding: 20px;
  }
  
  .section-title {
    font-size: 1.5rem;
    margin: 40px 0 20px;
  }
  
  .faq-item {
    padding: 16px 18px;
  }
  
  .faq-answer {
    padding-left: 0;
  }
  
  .info-table {
    font-size: 0.85rem;
  }
  
  .info-table th,
  .info-table td {
    padding: 10px 12px;
  }
}

/* ===== 打印样式 ===== */
@media print {
  .nav-bar,
  .banner,
  .search-bar,
  .go-top,
  .dark-toggle,
  .mobile-menu-btn,
  .mobile-nav {
    display: none !important;
  }
  
  body {
    background: white;
    color: black;
  }
  
  .container {
    max-width: 100%;
    padding: 0;
  }
}

/* ===== 无障碍 ===== */
:focus-visible {
  outline: 3px solid rgba(79, 70, 229, 0.5);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
```