```css
:root {
  --bg: #ffffff;
  --surface: #f8fafc;
  --text-primary: #1e293b;
  --text-secondary: #334155;
  --text-muted: #475569;
  --heading-color: #0f172a;
  --link-color: #075985;
  --border-color: #cbd5e1;
  --accent: #2563eb;
  --accent-dark: #1e3a8a;
  --footer-bg: #0b1120;
  --footer-text: #e2e8f0;
  --card-bg: #ffffff;
  --shadow: 0 4px 20px rgba(0,0,0,0.05);
  --hover-bg: #eef2ff;
  --glass-bg: rgba(255,255,255,0.7);
  --glass-border: rgba(255,255,255,0.3);
  --gradient-bg: linear-gradient(135deg, #e0e7ff 0%, #f0f9ff 50%, #eff6ff 100%);
  --animation-duration: 0.6s;
  --animation-ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

[data-theme="dark"] {
  --bg: #0f172a;
  --surface: #1e293b;
  --text-primary: #e2e8f0;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --heading-color: #f1f5f9;
  --link-color: #93c5fd;
  --border-color: #334155;
  --accent: #60a5fa;
  --accent-dark: #3b82f6;
  --footer-bg: #020617;
  --footer-text: #e2e8f0;
  --card-bg: #1e293b;
  --hover-bg: #2d3a4f;
  --glass-bg: rgba(30, 41, 59, 0.7);
  --glass-border: rgba(255,255,255,0.1);
  --gradient-bg: linear-gradient(135deg, #1e293b 0%, #0f172a 50%, #1e1b4b 100%);
}

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

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

body {
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.7;
  transition: background 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  color: var(--heading-color);
  line-height: 1.3;
  font-weight: 650;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2rem, 5vw, 2.8rem);
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--heading-color) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  margin: 2rem 0 1rem;
  border-left: 6px solid var(--accent);
  padding-left: 1rem;
  position: relative;
  overflow: hidden;
}

h2::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 60px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
  animation: slideIn 0.8s var(--animation-ease);
}

h3 {
  font-size: clamp(1.2rem, 2.5vw, 1.5rem);
  margin: 1.5rem 0 0.75rem;
}

h4 {
  font-size: 1.2rem;
}

p {
  color: var(--text-primary);
  margin-bottom: 1rem;
  line-height: 1.8;
}

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

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

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

/* 导航栏 */
.navbar {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.navbar:hover {
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}

.nav-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 70px;
  gap: 1rem;
}

.logo {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--heading-color);
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
  transition: transform 0.3s ease;
}

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

.logo span {
  background: linear-gradient(135deg, var(--accent-dark) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--text-primary);
  font-weight: 500;
  position: relative;
  padding: 0.5rem 0;
}

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

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

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

.search-box {
  display: flex;
  align-items: center;
  background: var(--bg);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  padding: 0.2rem 0.8rem;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

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

.search-box input {
  border: none;
  background: transparent;
  padding: 0.5rem;
  color: var(--text-primary);
  outline: none;
  font-size: 0.95rem;
  width: 180px;
  transition: width 0.3s ease;
}

.search-box input:focus {
  width: 200px;
}

.search-box button {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--accent);
  font-size: 1.2rem;
  transition: transform 0.2s ease;
}

.search-box button:hover {
  transform: scale(1.1);
}

.dark-toggle {
  background: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  padding: 0.4rem 1rem;
  color: var(--text-primary);
  cursor: pointer;
  font-weight: 500;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.dark-toggle:hover {
  background: var(--hover-bg);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.mobile-menu {
  display: none;
  font-size: 2rem;
  cursor: pointer;
  color: var(--heading-color);
  background: none;
  border: none;
  padding: 0.5rem;
  transition: transform 0.3s ease;
}

.mobile-menu:hover {
  transform: scale(1.1);
}

/* 横幅 */
.hero {
  background: var(--gradient-bg);
  border-bottom: 1px solid var(--border-color);
  padding: clamp(3rem, 6vw, 5rem) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
  opacity: 0.1;
  animation: float 6s ease-in-out infinite;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2.5rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.banner-text {
  animation: fadeInUp 0.8s var(--animation-ease);
}

.banner-text h1 {
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  margin-bottom: 1rem;
}

.banner-text p {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.hero-btn {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: #ffffff !important;
  padding: 0.8rem 2.5rem;
  border-radius: 50px;
  font-weight: 600;
  margin-top: 1.2rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
  text-decoration: none;
}

.hero-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
  text-decoration: none;
}

.hero-svg {
  background: var(--card-bg);
  border-radius: 24px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  animation: fadeIn 1s var(--animation-ease);
}

.hero-svg:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}

.hero-svg svg {
  width: 100%;
  height: auto;
  display: block;
}

/* 卡片模块 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.8rem;
  margin: 2.5rem 0;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  padding: 1.6rem;
  box-shadow: var(--shadow);
  transition: all 0.3s var(--animation-ease);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

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

.card:hover {
  background: var(--hover-bg);
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
}

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

.card h3 {
  margin-top: 0.2rem;
  font-size: 1.3rem;
}

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

.card a {
  font-weight: 600;
}

.card-grid .card {
  animation: fadeInUp 0.6s var(--animation-ease) both;
}

.card-grid .card:nth-child(1) { animation-delay: 0.1s; }
.card-grid .card:nth-child(2) { animation-delay: 0.2s; }
.card-grid .card:nth-child(3) { animation-delay: 0.3s; }
.card-grid .card:nth-child(4) { animation-delay: 0.4s; }
.card-grid .card:nth-child(5) { animation-delay: 0.5s; }
.card-grid .card:nth-child(6) { animation-delay: 0.6s; }

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

.article-list li {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border-color);
  transition: all 0.3s ease;
  position: relative;
  padding-left: 1rem;
}

.article-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.article-list li:hover {
  padding-left: 1.5rem;
}

.article-list li:hover::before {
  opacity: 1;
}

.article-list h4 {
  margin-bottom: 0.3rem;
}

.article-list h4 a {
  color: var(--heading-color);
  transition: color 0.3s ease;
}

.article-list h4 a:hover {
  color: var(--accent);
}

.article-meta {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

/* FAQ */
.faq-item {
  border: 1px solid var(--border-color);
  border-radius: 16px;
  margin: 1rem 0;
  background: var(--card-bg);
  overflow: hidden;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.faq-item:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.faq-question {
  background: transparent;
  padding: 1.2rem 1.5rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--heading-color);
  border: none;
  width: 100%;
  text-align: left;
  font-size: 1.1rem;
  transition: all 0.3s ease;
}

.faq-question:hover {
  color: var(--accent);
}

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

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

.faq-answer {
  padding: 0 1.5rem 1.5rem;
  color: var(--text-secondary);
  display: none;
  animation: fadeIn 0.3s ease;
}

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

/* footer */
.footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: 3rem 0 1rem;
  margin-top: 3rem;
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-dark), var(--accent));
  background-size: 200% 100%;
  animation: gradientShift 3s ease infinite;
}

.footer a {
  color: #cbd5e1;
  transition: color 0.3s ease;
}

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

.footer .grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

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

.footer p {
  color: #94a3b8;
  font-size: 0.9rem;
}

.footer-copyright {
  border-top: 1px solid #1e293b;
  margin-top: 2rem;
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.9rem;
  color: #94a3b8;
}

/* 表格 */
.table-wrap {
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  background: var(--card-bg);
  box-shadow: var(--shadow);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 0;
}

th, td {
  padding: 1rem;
  border: 1px solid var(--border-color);
  text-align: left;
  font-size: 0.95rem;
}

th {
  background: var(--surface);
  color: var(--heading-color);
  font-weight: 600;
  white-space: nowrap;
}

tr {
  transition: background 0.3s ease;
}

tr:hover {
  background: var(--hover-bg);
}

/* 按钮 */
.btn {
  background: var(--accent);
  border: none;
  color: #ffffff;
  padding: 0.6rem 1.5rem;
  border-radius: 40px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-block;
  text-decoration: none;
}

.btn:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

/* 返回顶部 */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: #ffffff;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  cursor: pointer;
  border: none;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
  z-index: 100;
  transition: all 0.3s ease;
  opacity: 0.9;
}

.back-to-top:hover {
  transform: translateY(-5px) scale(1.05);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.3);
  opacity: 1;
}

/* 面包屑 */
.breadcrumb {
  padding: 1rem 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.breadcrumb a {
  color: var(--link-color);
  transition: color 0.3s ease;
}

.breadcrumb a:hover {
  color: var(--accent);
  text-decoration: underline;
}

/* 图片文字清晰规格 */
svg text {
  fill: var(--text-primary);
  font-weight: 500;
}

/* 滚动动画 */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

@keyframes slideIn {
  from {
    transform: translateX(-100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

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

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--accent);
  border-radius: 5px;
  transition: background 0.3s ease;
}

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

/* 响应式 */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .hero-svg {
    max-width: 500px;
    margin: 0 auto;
  }
  
  .footer .grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 800px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    z-index: 999;
    gap: 1rem;
    animation: fadeIn 0.3s ease;
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .nav-links a {
    display: block;
    padding: 0.5rem 0;
    font-size: 1.1rem;
  }
  
  .search-box {
    display: none;
  }
  
  .mobile-menu {
    display: block;
  }
  
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-svg {
    max-width: 100%;
  }
  
  .banner-text h1 {
    font-size: 2.2rem;
  }
  
  .banner-text p {
    font-size: 1.05rem;
    padding: 0 1rem;
  }
  
  .hero-btn {
    font-size: 0.95rem;
    padding: 0.7rem 2rem;
  }
  
  .card-grid {
    grid-template-columns: 1fr;
    gap: 1.2rem;
  }
  
  .footer .grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }
  
  .footer h4 {
    margin-bottom: 0.5rem;
  }
  
  .back-to-top {
    bottom: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
  }
  
  .container {
    padding: 0 1rem;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  h3 {
    font-size: 1.2rem;
  }
  
  .table-wrap {
    margin: 1rem -0.5rem;
    border-radius: 8px;
  }
  
  th, td {
    padding: 0.7rem;
    font-size: 0.85rem;
  }
}

@media (max-width: 480px) {
  .navbar {
    min-height: 60px;
  }
  
  .nav-wrap {
    min-height: 60px;
  }
  
  .logo {
    font-size: 1.5rem;
  }
  
  .hero {
    padding: 2.5rem 0;
  }
  
  .hero-svg {
    padding: 1rem;
  }
  
  .card {
    padding: 1.2rem;
  }
  
  .faq-question {
    font-size: 1rem;
    padding: 1rem;
  }
  
  .faq-answer {
    padding: 0 1rem 1rem;
    font-size: 0.9rem;
  }
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

/* 打印样式 */
@media print {
  .navbar, .dark-toggle, .mobile-menu, .back-to-top, .hero-btn, .search-box {
    display: none !important;
  }
  
  body {
    background: #ffffff;
    color: #000000;
    font-size: 12pt;
  }
  
  a {
    color: #000000;
    text-decoration: underline;
  }
  
  .card, .faq-item, .table-wrap {
    break-inside: avoid;
  }
}
```