```css
/* ========== 老司机漫画 全站样式 ========== */
/* ---------- 设计变量 & 可读性优先 ---------- */
:root {
  --bg: #f9fafb;
  --bg-card: #ffffff;
  --bg-header: #ffffffcc;
  --bg-footer: #111827;
  --text-primary: #1f2937;
  --text-secondary: #374151;
  --text-heading: #111827;
  --text-link: #1d4ed8;
  --text-on-dark: #f9fafb;
  --text-muted-dark: #d1d5db;
  --border-light: #e5e7eb;
  --accent: #f97316;
  --accent-dark: #b45309;
  --shadow: 0 10px 25px rgba(0,0,0,0.05);
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  --bg: #0b1120;
  --bg-card: #1e293b;
  --bg-header: #0f172acc;
  --bg-footer: #020617;
  --text-primary: #e2e8f0;
  --text-secondary: #cbd5e1;
  --text-heading: #f8fafc;
  --text-link: #93c5fd;
  --text-on-dark: #f1f5f9;
  --border-light: #334155;
  --accent: #f97316;
  --accent-dark: #fbbf24;
  --shadow: 0 10px 25px rgba(0,0,0,0.6);
}

/* ---------- 基础重置 ---------- */
* { 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: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
  transition: background 0.3s ease, color 0.3s ease;
  font-size: 16px;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ---------- 排版 ---------- */
h1, h2, h3, h4 { color: var(--text-heading); line-height: 1.3; font-weight: 600; }
h1 { font-size: clamp(1.8rem, 4vw, 2.2rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.4rem, 3vw, 1.8rem); margin: 2rem 0 1rem; border-left: 6px solid var(--accent); padding-left: 0.8rem; }
h3 { font-size: clamp(1.1rem, 2vw, 1.3rem); margin: 1.5rem 0 0.75rem; }
h4 { font-size: clamp(1rem, 1.5vw, 1.1rem); margin: 1rem 0 0.5rem; }
p { margin-bottom: 1rem; color: var(--text-primary); }
a { color: var(--text-link); text-decoration: none; font-weight: 500; transition: color 0.2s; }
a:hover { text-decoration: underline; color: var(--accent); }

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

/* ---------- 导航栏 ---------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-header);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  gap: 20px;
  flex-wrap: wrap;
}

.logo {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-heading);
  letter-spacing: -0.03em;
  transition: transform 0.3s;
}
.logo:hover { transform: scale(1.02); }
.logo span { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 24px;
  align-items: center;
  flex-wrap: wrap;
}
.nav-links a {
  color: var(--text-primary);
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s;
}
.nav-links a:hover::after { width: 100%; }
.nav-links a:hover { color: var(--accent); text-decoration: none; }

.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 40px;
  padding: 4px 8px;
  transition: var(--transition);
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.search-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}
.search-box input {
  border: none;
  background: transparent;
  padding: 8px 12px;
  color: var(--text-primary);
  outline: none;
  min-width: 180px;
  font-size: 0.95rem;
}
.search-box input::placeholder { color: var(--text-secondary); }
.search-box button {
  background: var(--accent);
  border: none;
  color: #fff;
  padding: 6px 14px;
  border-radius: 40px;
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition);
}
.search-box button:hover { background: var(--accent-dark); transform: scale(1.03); }

.theme-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  color: var(--text-primary);
  border-radius: 40px;
  padding: 6px 14px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: var(--transition);
  white-space: nowrap;
}
.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

.mobile-menu-btn { display: none; background: none; border: none; font-size: 1.8rem; color: var(--text-heading); cursor: pointer; padding: 4px; transition: transform 0.3s; }
.mobile-menu-btn:hover { transform: scale(1.1); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 10px 24px;
  border-radius: 40px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}
.btn:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(249, 115, 22, 0.3);
  text-decoration: none;
  color: #fff;
}
.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}
.btn-outline:hover {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 20px rgba(249, 115, 22, 0.2);
}

/* ---------- 卡片 ---------- */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-light);
  margin-bottom: 24px;
  transition: var(--transition);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }

/* ---------- 文章卡片 ---------- */
.article-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.article-card:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.08);
  border-color: var(--accent);
}
.article-card h4 { margin-top: 0; transition: color 0.3s; }
.article-card:hover h4 { color: var(--accent); }
.article-card .meta { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 8px; }
.article-card .btn-outline { align-self: flex-start; padding: 6px 12px; font-size: 0.9rem; }

/* ---------- FAQ ---------- */
details {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 16px 20px;
  margin-bottom: 12px;
  transition: var(--transition);
  overflow: hidden;
}
details:hover { border-color: var(--accent); }
details[open] {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  border-color: var(--accent);
}
summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text-heading);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
summary::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--accent);
  transition: transform 0.3s;
  flex-shrink: 0;
}
details[open] summary::after { transform: rotate(45deg); }
summary::-webkit-details-marker { display: none; }
details p { margin-top: 12px; color: var(--text-primary); animation: fadeIn 0.3s ease; }

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

/* ---------- Footer ---------- */
footer {
  background: var(--bg-footer);
  color: var(--text-on-dark);
  padding: 48px 0 24px;
  margin-top: 60px;
  position: relative;
}
footer a { color: #9ca3af; transition: color 0.3s; }
footer a:hover { color: #fff; text-decoration: none; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 32px; }
.footer-bottom {
  border-top: 1px solid #374151;
  margin-top: 32px;
  padding-top: 24px;
  text-align: center;
  color: #9ca3af;
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  gap: 8px;
  font-size: 0.9rem;
  margin: 16px 0;
  color: var(--text-secondary);
  flex-wrap: wrap;
  align-items: center;
}
.breadcrumb a { color: var(--text-link); transition: color 0.3s; }
.breadcrumb a:hover { color: var(--accent); }

/* ---------- Banner ---------- */
.banner {
  background: linear-gradient(145deg, #1e293b, #0f172a);
  color: white;
  border-radius: 32px;
  padding: 48px 32px;
  margin: 24px 0;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(249, 115, 22, 0.15), transparent 40%);
  z-index: -1;
}
.banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 80%, rgba(249, 115, 22, 0.1), transparent 30%);
  z-index: -1;
}
.banner h2 { color: white; border: none; margin-top: 0; }
.banner p { color: #e2e8f0; font-size: 1.1rem; }

/* ---------- 表格 ---------- */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  background: var(--bg-card);
  color: var(--text-primary);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
th {
  background: var(--accent);
  color: white;
  padding: 12px;
  text-align: left;
  font-weight: 600;
}
td { border-bottom: 1px solid var(--border-light); padding: 12px; transition: background 0.2s; }
tr:hover td { background: rgba(249, 115, 22, 0.05); }

/* ---------- 滚动动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* ---------- 图片占位 ---------- */
.svg-placeholder {
  background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #1e293b;
  font-weight: 600;
  padding: 24px;
  min-height: 120px;
}

/* ---------- 通用工具类 ---------- */
.text-secondary { color: var(--text-secondary); }
.mt-2 { margin-top: 16px; }
.mb-2 { margin-bottom: 16px; }
.flex { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }

/* ---------- 返回顶部 ---------- */
#backTop {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  font-size: 24px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  z-index: 999;
  transition: var(--transition);
  opacity: 0.9;
}
#backTop:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 24px rgba(249, 115, 22, 0.4);
  opacity: 1;
}

/* ---------- 列表样式 ---------- */
ul, ol { padding-left: 1.5rem; margin-bottom: 1rem; }
li { margin-bottom: 0.5rem; }

/* ---------- 区块标题 ---------- */
section { margin: 40px 0; }

/* ---------- 响应式布局 ---------- */
@media (max-width: 1024px) {
  .container { padding: 0 20px; }
  .grid-2 { grid-template-columns: 1fr; }
  .banner { padding: 40px 24px; }
}

@media (max-width: 768px) {
  body { font-size: 15px; }
  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.4rem; }
  
  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    background: var(--bg-card);
    padding: 12px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    gap: 12px;
  }
  .nav-links.show { display: flex; animation: slideDown 0.3s ease; }
  @keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .mobile-menu-btn { display: block; }
  .search-box { order: 3; width: 100%; }
  .search-box input { min-width: 0; flex: 1; }
  
  .banner { padding: 32px 20px; border-radius: 24px; }
  .banner h2 { font-size: 1.8rem; }
  .card { padding: 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  #backTop { width: 40px; height: 40px; font-size: 20px; bottom: 20px; right: 20px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .nav-inner { gap: 12px; }
  .logo { font-size: 1.4rem; }
  .grid-3 { grid-template-columns: 1fr; }
  .banner { padding: 28px 16px; }
  .banner h2 { font-size: 1.5rem; }
  .banner p { font-size: 1rem; }
  .btn { padding: 8px 16px; font-size: 0.9rem; }
  .theme-toggle { padding: 4px 10px; font-size: 0.8rem; }
}

/* ---------- 暗色模式微调 ---------- */
[data-theme="dark"] .banner {
  background: linear-gradient(145deg, #0f172a, #020617);
}
[data-theme="dark"] .search-box input {
  color-scheme: dark;
}
[data-theme="dark"] details summary::after {
  color: var(--accent-dark);
}

/* ---------- 打印样式 ---------- */
@media print {
  .navbar, .theme-toggle, .mobile-menu-btn, #backTop, .footer-bottom, .banner .btn { display: none !important; }
  body { background: white; color: black; }
  .card, .article-card { box-shadow: none; border: 1px solid #ddd; }
}

/* ---------- 无障碍支持 ---------- */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

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

/* ---------- 滚动条美化 ---------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--accent), var(--accent-dark));
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover { background: var(--accent-dark); }

/* ---------- 选中文本 ---------- */
::selection {
  background: var(--accent);
  color: white;
}

/* ---------- 表单元素 ---------- */
input, button, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ---------- 图片响应式 ---------- */
img { max-width: 100%; height: auto; }

/* ---------- 友情链接区域 ---------- */
.flex a {
  padding: 6px 12px;
  border-radius: 20px;
  transition: var(--transition);
}
.flex a:hover {
  background: rgba(249, 115, 22, 0.1);
  text-decoration: none;
}

/* ---------- 联系我们卡片 ---------- */
#contact .card p {
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ---------- HowTo 教程 ---------- */
#howto ol { margin-left: 20px; }
#howto li { margin-bottom: 8px; }

/* ---------- 品牌介绍 ---------- */
#about .card {
  position: relative;
  overflow: hidden;
}
#about .card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--accent);
  border-radius: 0 4px 4px 0;
}

/* ---------- 产品优势 ---------- */
#products ul {
  columns: 2;
  gap: 20px;
  list-style: none;
  padding-left: 0;
}
#products ul li {
  padding: 8px 12px;
  background: rgba(249, 115, 22, 0.05);
  border-radius: 8px;
  transition: var(--transition);
}
#products ul li:hover {
  background: rgba(249, 115, 22, 0.1);
  transform: translateX(4px);
}

@media (max-width: 600px) {
  #products ul { columns: 1; }
}
```