```css
/* ============================================
   咚漫漫画 - 完整样式表
   设计风格: 现代漫画风 + 毛玻璃 + 渐变
   ============================================ */

/* ---------- CSS 变量与主题 ---------- */
:root {
  --bg: #F8FAFC;
  --surface: rgba(255, 255, 255, 0.8);
  --surface-solid: #FFFFFF;
  --surface-hover: #EEF2F7;
  --text-primary: #1E293B;
  --text-secondary: #334155;
  --text-muted: #475569;
  --heading: #0F172A;
  --brand: #6366F1;
  --brand-light: #818CF8;
  --brand-dark: #4F46E5;
  --accent: #F59E0B;
  --link: #4F46E5;
  --border: rgba(148, 163, 184, 0.25);
  --footer-bg: #0F172A;
  --footer-text: #CBD5E1;
  --footer-heading: #F8FAFC;
  --card-bg: rgba(255, 255, 255, 0.85);
  --shadow: 0 8px 32px rgba(99, 102, 241, 0.08);
  --shadow-lg: 0 16px 48px rgba(99, 102, 241, 0.12);
  --max-width: 1280px;
  --radius: 20px;
  --radius-sm: 12px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --glass-bg: rgba(255, 255, 255, 0.6);
  --glass-border: rgba(255, 255, 255, 0.4);
  --gradient-hero: linear-gradient(135deg, #EEF2FF 0%, #F8FAFC 50%, #FEF3C7 100%);
  --gradient-btn: linear-gradient(135deg, #6366F1, #8B5CF6);
  --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.9), rgba(238,242,255,0.7));
}

[data-theme="dark"] {
  --bg: #0B1120;
  --surface: rgba(30, 41, 59, 0.8);
  --surface-solid: #1E293B;
  --surface-hover: #263449;
  --text-primary: #E2E8F0;
  --text-secondary: #CBD5E1;
  --text-muted: #94A3B8;
  --heading: #FFFFFF;
  --brand: #818CF8;
  --brand-light: #A5B4FC;
  --brand-dark: #6366F1;
  --accent: #FBBF24;
  --link: #A5B4FC;
  --border: rgba(148, 163, 184, 0.15);
  --footer-bg: #020617;
  --footer-text: #94A3B8;
  --footer-heading: #F1F5F9;
  --card-bg: rgba(30, 41, 59, 0.85);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  --glass-bg: rgba(30, 41, 59, 0.6);
  --glass-border: rgba(148, 163, 184, 0.2);
  --gradient-hero: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #312E81 100%);
  --gradient-btn: linear-gradient(135deg, #4F46E5, #7C3AED);
  --gradient-card: linear-gradient(145deg, rgba(30,41,59,0.9), rgba(15,23,42,0.7));
}

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

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

body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
  transition: background 0.4s ease, color 0.4s ease;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--heading);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  background: linear-gradient(135deg, var(--heading), var(--brand));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1.2rem;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-top: 2.5rem;
  margin-bottom: 1.5rem;
  padding-left: 1rem;
  border-left: 6px solid var(--brand);
  position: relative;
}

h2::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 60px;
  height: 4px;
  background: var(--gradient-btn);
  border-radius: 4px;
}

h3 {
  font-size: 1.4rem;
  margin-top: 1.8rem;
  margin-bottom: 0.8rem;
}

h4 {
  font-size: 1.15rem;
  margin-top: 1.2rem;
  color: var(--text-secondary);
}

p {
  color: var(--text-primary);
  margin: 1rem 0;
  line-height: 1.8;
}

a {
  color: var(--link);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

ul, ol {
  padding-left: 1.5rem;
  color: var(--text-primary);
}

li {
  margin: 0.5rem 0;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

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

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-btn);
  color: #FFFFFF;
  padding: 0.75rem 1.8rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
  color: #FFFFFF;
  text-decoration: none;
}

.btn:hover::before {
  left: 100%;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--brand);
  color: var(--brand);
  box-shadow: none;
}

.btn-outline:hover {
  background: var(--brand);
  color: #FFFFFF;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
}

/* ---------- 导航栏 ---------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.logo {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--heading);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  letter-spacing: -0.02em;
}

.logo svg {
  width: 40px;
  height: 40px;
  filter: drop-shadow(0 2px 8px rgba(99, 102, 241, 0.3));
  transition: transform 0.3s ease;
}

.logo:hover svg {
  transform: rotate(-5deg) scale(1.05);
}

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

.nav-links a {
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 0.3rem 0;
}

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

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

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

.search-box {
  display: flex;
  align-items: center;
  background: var(--surface);
  border-radius: 50px;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.search-box:focus-within {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.search-box input {
  background: transparent;
  border: none;
  padding: 0.4rem 0.8rem;
  color: var(--text-primary);
  outline: none;
  width: 160px;
  font-size: 0.9rem;
}

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

.search-box button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-primary);
  font-size: 1.1rem;
  padding: 0.3rem;
  transition: transform 0.2s ease;
}

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

.theme-toggle {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 0.5rem 1rem;
  color: var(--text-primary);
  cursor: pointer;
  font-weight: 500;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.theme-toggle:hover {
  border-color: var(--brand);
  transform: scale(1.05);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0.5rem;
}

.hamburger span {
  width: 28px;
  height: 3px;
  background: var(--text-primary);
  border-radius: 3px;
  transition: all 0.3s ease;
}

/* ---------- Hero 区域 ---------- */
.hero {
  background: var(--gradient-hero);
  padding: 4rem 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.1), transparent 70%);
  border-radius: 50%;
  animation: float 8s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.08), transparent 70%);
  border-radius: 50%;
  animation: float 12s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(-20px) scale(1.05);
  }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero h1 {
  animation: fadeInUp 0.8s ease;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  animation: fadeInUp 0.8s ease 0.1s both;
}

.hero-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 2.5rem;
  animation: fadeInUp 0.8s ease 0.2s both;
}

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

.stat-item .num {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--heading);
  background: linear-gradient(135deg, var(--brand), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.stat-item .label {
  color: var(--text-muted);
  font-size: 0.9rem;
  display: block;
  margin-top: 0.3rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  margin-top: 2.5rem;
  animation: fadeInUp 0.8s ease 0.3s both;
}

.img-placeholder {
  background: var(--glass-bg);
  border-radius: var(--radius);
  padding: 2rem;
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-lg);
  animation: fadeInUp 0.8s ease 0.2s both;
  transition: transform 0.3s ease;
}

.img-placeholder:hover {
  transform: translateY(-8px) rotate(1deg);
}

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

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding: 1.2rem 1.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.breadcrumb a {
  color: var(--text-muted);
  transition: color 0.2s ease;
}

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

/* ---------- 卡片通用 ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
  margin: 2.5rem 0;
}

.card {
  background: var(--gradient-card);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-btn);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(99, 102, 241, 0.3);
}

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

.card h3 {
  margin-top: 0;
  font-size: 1.3rem;
}

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

/* ---------- 文章卡片 ---------- */
.article-card {
  display: flex;
  flex-direction: column;
  min-height: 220px;
}

.article-card h4 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  transition: color 0.2s ease;
}

.article-card:hover h4 {
  color: var(--brand);
}

.article-meta {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 0.8rem 0;
  display: flex;
  gap: 0.8rem;
  align-items: center;
}

.article-card a {
  margin-top: auto;
  font-weight: 600;
  color: var(--brand);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: gap 0.2s ease;
}

.article-card a:hover {
  gap: 0.6rem;
  text-decoration: none;
}

/* ---------- FAQ ---------- */
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 1.2rem 0;
  margin-bottom: 0.5rem;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 1.1rem;
  cursor: pointer;
  color: var(--heading);
  padding: 0.8rem;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
  background: var(--surface);
  border: 1px solid transparent;
}

.faq-question:hover {
  background: var(--surface-hover);
  border-color: var(--border);
}

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

.faq-item.active .faq-question span {
  transform: rotate(135deg);
}

.faq-answer {
  margin-top: 0.8rem;
  color: var(--text-secondary);
  display: none;
  padding: 0.8rem 1rem;
  animation: fadeIn 0.3s ease;
}

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

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- HowTo ---------- */
.howto-steps {
  counter-reset: step;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 2rem;
  border: 1px solid var(--border);
  backdrop-filter: blur(10px);
}

.howto-steps ol {
  list-style: none;
  padding: 0;
}

.howto-steps li {
  margin: 1.2rem 0;
  padding-left: 3.5rem;
  position: relative;
  color: var(--text-primary);
  font-size: 1rem;
  line-height: 1.8;
}

.howto-steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  background: var(--gradient-btn);
  color: #FFFFFF;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.howto-steps li strong {
  color: var(--heading);
}

/* ---------- 联系我们 ---------- */
#contact p {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.6rem 1rem;
  background: var(--surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  transition: all 0.2s ease;
}

#contact p:hover {
  border-color: var(--brand);
  transform: translateX(4px);
}

#contact p strong {
  min-width: 80px;
  color: var(--heading);
}

/* ---------- 网站地图 ---------- */
#map-site {
  margin-top: 3rem;
}

#map-site p {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

#map-site a {
  padding: 0.4rem 1rem;
  background: var(--surface);
  border-radius: 50px;
  border: 1px solid var(--border);
  transition: all 0.2s ease;
  font-size: 0.9rem;
}

#map-site a:hover {
  background: var(--brand);
  color: #FFFFFF;
  border-color: var(--brand);
  text-decoration: none;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: 4rem 0 2rem;
  margin-top: 5rem;
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-btn);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
}

.site-footer h4 {
  color: var(--footer-heading);
  margin-bottom: 1.2rem;
  font-size: 1.1rem;
}

.site-footer a {
  color: var(--footer-text);
  opacity: 0.85;
  font-size: 0.95rem;
  line-height: 2;
  transition: all 0.2s ease;
}

.site-footer a:hover {
  color: #FFFFFF;
  opacity: 1;
  text-decoration: none;
  padding-left: 4px;
}

.copyright {
  border-top: 1px solid rgba(148, 163, 184, 0.2);
  padding-top: 1.5rem;
  margin-top: 3rem;
  font-size: 0.9rem;
  color: #64748B;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

/* ---------- 返回顶部 ---------- */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--gradient-btn);
  color: #FFFFFF;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
  cursor: pointer;
  border: none;
  font-size: 1.5rem;
  z-index: 999;
  transition: all var(--transition);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
}

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

.back-to-top:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 12px 32px rgba(99, 102, 241, 0.5);
}

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

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

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

  .img-placeholder {
    max-width: 500px;
    margin: 0 auto;
  }

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

@media (max-width: 900px) {
  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    padding: 1.5rem;
    gap: 1.2rem;
    border-bottom: 1px solid var(--glass-border);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  }

  .nav-links.open {
    display: flex;
    animation: slideDown 0.3s ease;
  }

  @keyframes slideDown {
    from {
      opacity: 0;
      transform: translateY(-20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .hamburger {
    display: flex;
  }

  .hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .hamburger.active span:nth-child(2) {
    opacity: 0;
  }

  .hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

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

  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  }
}

@media (max-width: 768px) {
  .hero {
    padding: 3rem 0;
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: 1.5rem;
  }

  .stat-item .num {
    font-size: 2rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .back-to-top {
    width: 44px;
    height: 44px;
    bottom: 1.5rem;
    right: 1.5rem;
    font-size: 1.2rem;
  }
}

@media (max-width: 560px) {
  .container {
    padding: 0 1rem;
  }

  h1 {
    font-size: 1.8rem;
  }

  h2 {
    font-size: 1.4rem;
  }

  .hero-cta {
    flex-direction: column;
  }

  .hero-cta .btn {
    width: 100%;
  }

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

  .howto-steps {
    padding: 1.5rem;
  }

  .howto-steps li {
    padding-left: 3rem;
  }

  .nav-inner {
    padding: 0.6rem 1rem;
  }

  .logo {
    font-size: 1.3rem;
  }

  .logo svg {
    width: 32px;
    height: 32px;
  }
}

/* ---------- 无障碍与可访问性 ---------- */
:focus-visible {
  outline: 3px solid var(--brand);
  outline-offset: 2px;
  border-radius: 4px;
}

::selection {
  background: var(--brand);
  color: #FFFFFF;
}

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

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

::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--brand), var(--brand-dark));
  border-radius: 10px;
  border: 2px solid var(--bg);
}

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

/* ---------- 打印样式 ---------- */
@media print {
  .navbar,
  .back-to-top,
  .hero-cta,
  .search-box,
  .theme-toggle,
  .hamburger {
    display: none !important;
  }

  body {
    background: #FFFFFF;
    color: #000000;
  }

  .card,
  .faq-item,
  .howto-steps {
    box-shadow: none;
    border: 1px solid #ddd;
  }
}
```