```css
/* ============================================
   妖精动漫 - 全局样式表
   设计风格：现代·清新·动漫感
   支持：亮/暗色、响应式、动效
   ============================================ */

/* ---------- 设计变量 ---------- */
:root {
  /* 亮色主题 */
  --bg-body: #f4f7fb;
  --bg-card: #ffffff;
  --bg-soft: #eef2f7;
  --bg-nav: rgba(255, 255, 255, 0.75);
  --bg-input: #ffffff;
  --text-main: #1a2634;
  --text-secondary: #3d4c5e;
  --text-muted: #5c6b7a;
  --heading: #0e1e2f;
  --primary: #2d5f8b;
  --primary-deep: #1c3f5e;
  --primary-soft: #3b7dbd;
  --accent: #e67e5a;
  --accent-soft: #f5c7b7;
  --border: #dbe2ea;
  --border-light: #e8edf3;
  --shadow-sm: 0 4px 12px rgba(20, 40, 60, 0.06);
  --shadow-md: 0 8px 28px rgba(20, 40, 60, 0.1);
  --shadow-lg: 0 20px 50px rgba(20, 40, 60, 0.14);
  --footer-bg: #101f2e;
  --footer-text: #cbd5e1;
  --footer-heading: #f1f5f9;
  --hero-grad-start: #1c3f5e;
  --hero-grad-end: #2d6a9f;
  --success: #2f9e6e;
  --warning: #d97706;
  --danger: #dc2626;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --font-main: system-ui, -apple-system, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --nav-height: 68px;
}

/* 暗色主题变量覆盖 */
[data-theme="dark"] {
  --bg-body: #0e141b;
  --bg-card: #1a2332;
  --bg-soft: #101a26;
  --bg-nav: rgba(14, 20, 27, 0.8);
  --bg-input: #1a2332;
  --text-main: #d7e2ec;
  --text-secondary: #a8b8c8;
  --text-muted: #7c8b9a;
  --heading: #eaf0f6;
  --primary: #5b9bd0;
  --primary-deep: #3a7bb5;
  --primary-soft: #6ea8d9;
  --accent: #f0a588;
  --accent-soft: #5c3a2e;
  --border: #283746;
  --border-light: #1f2c3a;
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.5);
  --footer-bg: #080d13;
  --footer-text: #8b9aab;
  --footer-heading: #d7e2ec;
  --hero-grad-start: #0d1f30;
  --hero-grad-end: #1f4568;
}

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

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.75;
  font-size: 16px;
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
  min-height: 100vh;
}

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

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

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--heading);
  margin-bottom: 0.5em;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  border-left: 5px solid var(--primary);
  padding-left: 1rem;
  margin: 3rem 0 1.5rem;
  position: relative;
}

h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 4px;
  margin-top: 0.3rem;
}

h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.8rem;
}

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

p {
  margin-bottom: 1rem;
  color: var(--text-main);
}

ul, ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

li {
  margin-bottom: 0.3rem;
}

::selection {
  background: var(--primary);
  color: #fff;
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 8px;
  border: 2px solid var(--bg-soft);
}

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

/* ---------- 工具类 ---------- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.hidden {
  display: none !important;
}

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

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

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

/* ---------- 导航栏 ---------- */
.nav-wrapper {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-nav);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--nav-height);
  gap: 1rem;
}

.logo {
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--heading);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 2px;
  white-space: nowrap;
}

.logo span {
  color: var(--primary);
  font-size: 2rem;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.menu {
  display: flex;
  gap: 2rem;
  list-style: none;
  padding: 0;
}

.menu li {
  margin: 0;
  position: relative;
}

.menu a {
  color: var(--text-main);
  font-weight: 500;
  font-size: 1rem;
  padding: 0.5rem 0;
  position: relative;
  transition: color 0.25s ease;
}

.menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: width 0.3s ease;
}

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

.menu 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-input);
  border: 1.5px solid var(--border);
  border-radius: 50px;
  padding: 0.35rem 0.35rem 0.35rem 1.2rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(45, 95, 139, 0.15);
}

.search-box input {
  border: none;
  background: transparent;
  color: var(--text-main);
  font-size: 0.9rem;
  outline: none;
  width: 150px;
  padding: 0.35rem 0;
}

.search-box input::placeholder {
  color: var(--text-muted);
  opacity: 0.8;
}

.search-box button {
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  border: none;
  color: #fff;
  padding: 0.45rem 1.1rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.search-box button:hover {
  transform: scale(1.03);
  box-shadow: 0 4px 15px rgba(45, 95, 139, 0.3);
}

.theme-toggle, .mobile-toggle {
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: 50px;
  padding: 0.45rem 0.9rem;
  color: var(--text-main);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s ease;
}

.theme-toggle:hover, .mobile-toggle:hover {
  border-color: var(--primary);
  background: var(--bg-card);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.mobile-toggle {
  display: none;
  font-size: 1.2rem;
}

.mobile-menu {
  display: none;
  flex-direction: column;
  background: var(--bg-card);
  padding: 1.2rem;
  gap: 0.5rem;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
  animation: slideDown 0.3s ease;
}

.mobile-menu a {
  color: var(--text-main);
  font-weight: 500;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-sm);
  transition: background 0.2s ease;
}

.mobile-menu a:hover {
  background: var(--bg-soft);
  color: var(--primary);
}

.mobile-menu.show {
  display: flex;
}

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

/* ---------- Hero 首屏 ---------- */
.hero {
  background: linear-gradient(135deg, var(--hero-grad-start) 0%, var(--hero-grad-end) 100%);
  color: #fff;
  padding: 4rem 0 4.5rem;
  position: relative;
  overflow: hidden;
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow-lg);
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(230, 126, 90, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.hero-text {
  flex: 1;
  min-width: 300px;
  animation: fadeInUp 0.8s ease;
}

.hero-text h1 {
  color: #fff;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.2;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
}

.hero-text p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.15rem;
  max-width: 560px;
  margin-bottom: 2rem;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero svg {
  width: 260px;
  height: auto;
  animation: float 3s ease-in-out infinite;
  filter: drop-shadow(0 10px 25px rgba(0, 0, 0, 0.2));
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

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

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  color: #fff;
  padding: 0.8rem 2rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(45, 95, 139, 0.2);
  text-align: center;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(45, 95, 139, 0.3);
  color: #fff;
}

.btn:active {
  transform: translateY(-1px);
}

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

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
  color: #fff;
  box-shadow: none;
}

.btn-light {
  background: #fff;
  color: var(--primary-deep);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn-light:hover {
  background: #f0f4f8;
  color: var(--primary-deep);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

/* ---------- 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);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s ease;
}

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

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

.card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 0;
}

.card .highlight {
  color: var(--primary);
  font-weight: 600;
}

/* ---------- 徽章 ---------- */
.badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary-soft), var(--primary));
  color: #fff;
  padding: 0.2rem 0.8rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-left: 0.5rem;
  vertical-align: middle;
}

/* ---------- 区块标题 ---------- */
.section-title {
  margin: 3.5rem 0 1.5rem;
  position: relative;
}

/* ---------- 文章列表 ---------- */
.article-list {
  list-style: none;
  padding: 0;
}

.article-list li {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-light);
  transition: background 0.2s ease;
  flex-wrap: wrap;
}

.article-list li:hover {
  background: var(--bg-soft);
  padding-left: 1rem;
  border-radius: var(--radius-sm);
}

.article-list time {
  color: var(--text-muted);
  font-size: 0.9rem;
  white-space: nowrap;
  font-weight: 500;
}

.article-list a {
  color: var(--text-main);
  font-weight: 500;
  flex: 1;
  min-width: 200px;
  transition: color 0.2s ease;
}

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

/* ---------- FAQ ---------- */
.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.6rem;
  margin-bottom: 0.8rem;
  border: 1px solid var(--border-light);
  transition: all 0.25s ease;
  cursor: pointer;
}

.faq-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  font-weight: 600;
  color: var(--heading);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.05rem;
  cursor: pointer;
  user-select: none;
}

.faq-question span {
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--primary);
  transition: transform 0.3s ease;
  display: inline-block;
}

.faq-item.open .faq-question span {
  transform: rotate(45deg);
}

.faq-answer {
  margin-top: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.7;
  display: none;
  animation: fadeIn 0.3s ease;
  font-size: 0.95rem;
  border-top: 1px dashed var(--border);
  padding-top: 0.8rem;
}

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

/* ---------- 表格 ---------- */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  min-width: 600px;
}

th {
  background: var(--primary-deep);
  color: #fff;
  padding: 1rem 1.2rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.95rem;
}

td {
  border: 1px solid var(--border-light);
  padding: 0.9rem 1.2rem;
  color: var(--text-main);
  font-size: 0.95rem;
}

tr:nth-child(even) {
  background: var(--bg-soft);
}

tr:hover {
  background: rgba(45, 95, 139, 0.05);
}

/* ---------- Footer ---------- */
footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: 3.5rem 0 2rem;
  margin-top: 4rem;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

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

footer h4 {
  color: var(--footer-heading);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1.2rem;
  position: relative;
  padding-bottom: 0.6rem;
}

footer h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

footer a {
  color: var(--footer-text);
  display: block;
  padding: 0.3rem 0;
  transition: color 0.2s ease, padding-left 0.2s ease;
  font-size: 0.95rem;
}

footer a:hover {
  color: #fff;
  padding-left: 6px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 1.8rem;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.4);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ---------- 返回顶部 ---------- */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  color: #fff;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.25);
  cursor: pointer;
  border: none;
  z-index: 999;
  font-size: 1.3rem;
  transition: all 0.3s ease;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
}

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

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

/* ---------- 联系区块 ---------- */
.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  background: var(--bg-card);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.contact-info div {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
}

.contact-info div strong {
  color: var(--heading);
  display: block;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.2rem;
}

.contact-info div p {
  margin: 0;
  color: var(--text-secondary);
}

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

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

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .container {
    padding: 0 20px;
  }
  
  .hero .container {
    flex-direction: column;
    text-align: center;
  }
  
  .hero-text p {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-buttons {
    justify-content: center;
  }
}

@media (max-width: 900px) {
  .menu, .search-box {
    display: none;
  }
  
  .mobile-toggle {
    display: flex;
  }
  
  .nav-actions {
    gap: 0.5rem;
  }
  
  .theme-toggle {
    padding: 0.45rem 0.7rem;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 16px;
  }
  
  .hero {
    padding: 3rem 0;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  }
  
  .hero svg {
    width: 180px;
  }
  
  .hero-text h1 {
    font-size: 1.9rem;
  }
  
  .hero-text p {
    font-size: 1rem;
  }
  
  .btn {
    padding: 0.7rem 1.5rem;
    font-size: 0.9rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .card-grid {
    grid-template-columns: 1fr;
  }
  
  .article-list li {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.3rem;
  }
  
  .article-list time {
    font-size: 0.85rem;
  }
  
  .back-to-top {
    bottom: 1.5rem;
    right: 1.5rem;
    width: 42px;
    height: 42px;
  }
  
  footer .columns {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 480px) {
  footer .columns {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .logo {
    font-size: 1.4rem;
  }
  
  .logo span {
    font-size: 1.6rem;
  }
}

/* ---------- 焦点可见性 ---------- */
.btn:focus-visible,
.theme-toggle:focus-visible,
.mobile-toggle:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 其他组件 ---------- */
.toolbar {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin: 1rem 0;
}

.banner-svg {
  background: var(--primary-deep);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  fill: #fff;
}

.dark-illustration {
  color: #fff;
}

/* 动画效果增强 */
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.02); }
}

@keyframes shine {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

/* FAQ 打开状态 */
.faq-item.open .faq-answer {
  display: block;
}

/* 玻璃拟态效果 */
.glass {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

[data-theme="dark"] .glass {
  background: rgba(20, 30, 40, 0.7);
  border-color: rgba(255, 255, 255, 0.08);
}

/* 渐变文字 */
.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* 分隔线 */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 2rem 0;
  border: none;
}

/* 响应式网格辅助 */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

/* 列表样式优化 */
.list-clean {
  list-style: none;
  padding: 0;
}

.list-clean li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.list-clean li::before {
  content: '▸';
  color: var(--primary);
  font-weight: bold;
}

/* 引用块 */
blockquote {
  border-left: 4px solid var(--primary);
  background: var(--bg-soft);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  font-style: italic;
}

/* 代码块 */
code {
  background: var(--bg-soft);
  color: var(--primary);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.9em;
}

pre {
  background: var(--bg-soft);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  overflow-x: auto;
  border: 1px solid var(--border-light);
}

pre code {
  background: transparent;
  padding: 0;
}

/* 标签 */
.tag {
  display: inline-block;
  background: var(--bg-soft);
  color: var(--text-secondary);
  padding: 0.3rem 0.8rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  margin-right: 0.4rem;
  margin-bottom: 0.3rem;
  border: 1px solid var(--border);
  transition: all 0.2s ease;
}

.tag:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* 统计数字 */
.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

/* 工具类：圆角 */
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }

/* 阴影 */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* 背景色 */
.bg-card { background: var(--bg-card); }
.bg-soft { background: var(--bg-soft); }
.bg-primary { background: var(--primary); }
.bg-primary-deep { background: var(--primary-deep); }

/* 文字颜色 */
.text-primary { color: var(--primary); }
.text-accent { color: var(--accent); }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-white { color: #fff; }

/* 对齐 */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

/* 间距工具 */
.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }
.p-5 { padding: 3rem; }

.px-2 { padding-left: 1rem; padding-right: 1rem; }
.px-3 { padding-left: 1.5rem; padding-right: 1.5rem; }
.px-4 { padding-left: 2rem; padding-right: 2rem; }

.py-2 { padding-top: 1rem; padding-bottom: 1rem; }
.py-3 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.py-4 { padding-top: 2rem; padding-bottom: 2rem; }
.py-5 { padding-top: 3rem; padding-bottom: 3rem; }

/* 弹性布局 */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.gap-4 { gap: 2rem; }

/* 响应式可见性 */
@media (min-width: 901px) {
  .d-desktop { display: block; }
  .d-mobile { display: none; }
}

@media (max-width: 900px) {
  .d-desktop { display: none; }
  .d-mobile { display: block; }
}
```