```css
/* ==========================================
   浮云漫画 - 全局样式
   风格: 温暖橙 + 柔和渐变 + 毛玻璃
   ========================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, '微软雅黑', 'PingFang SC', sans-serif;
}

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

body {
  background: #fff;
  color: #1e1e1e;
  line-height: 1.7;
  transition: background .3s ease, color .3s ease;
  overflow-x: hidden;
}

body.dark {
  background: #121212;
  color: #e0e0e0;
}

/* 容器 */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}

/* 文字选中 */
::selection {
  background: rgba(245, 166, 35, .3);
}

/* 滚动条 */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(245, 166, 35, .4);
  border-radius: 20px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(245, 166, 35, .6);
}

/* ==========================================
   导航栏 - 毛玻璃吸顶
   ========================================== */
.nav {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(255, 255, 255, .85);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  box-shadow: 0 2px 20px rgba(0, 0, 0, .06);
  border-bottom: 1px solid rgba(245, 166, 35, .1);
  transition: background .3s, box-shadow .3s;
}

body.dark .nav {
  background: rgba(18, 18, 18, .85);
  border-bottom-color: rgba(255, 255, 255, .08);
  box-shadow: 0 2px 20px rgba(0, 0, 0, .3);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo a {
  font-size: 1.8rem;
  font-weight: 800;
  color: #f5a623;
  text-decoration: none;
  letter-spacing: -0.5px;
  transition: color .3s;
}

.logo a:hover {
  color: #e08900;
}

.logo a strong {
  font-weight: 800;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: inherit;
  font-weight: 500;
  font-size: 1rem;
  position: relative;
  padding: 4px 2px;
  transition: color .3s;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: #f5a623;
  border-radius: 2px;
  transition: width .3s;
}

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

.nav-links a:hover {
  color: #f5a623;
}

/* 暗黑切换按钮 */
#darkToggle {
  background: none;
  border: 1px solid rgba(128, 128, 128, .4);
  border-radius: 40px;
  padding: .3rem .9rem;
  cursor: pointer;
  font-size: .9rem;
  color: inherit;
  transition: all .3s;
  white-space: nowrap;
}

#darkToggle:hover {
  border-color: #f5a623;
  background: rgba(245, 166, 35, .1);
}

/* 移动菜单按钮 */
.menu-icon {
  display: none;
  font-size: 1.8rem;
  cursor: pointer;
  user-select: none;
  line-height: 1;
  color: inherit;
  padding: 4px;
  border-radius: 8px;
  transition: background .2s;
}

.menu-icon:hover {
  background: rgba(0, 0, 0, .05);
}

body.dark .menu-icon:hover {
  background: rgba(255, 255, 255, .1);
}

/* ==========================================
   Banner 轮播区
   ========================================== */
.banner {
  position: relative;
  overflow: hidden;
  border-radius: 24px;
  margin: 24px 0;
  background: #fff3e0;
  box-shadow: 0 8px 32px rgba(245, 166, 35, .15);
  border: 1px solid rgba(245, 166, 35, .1);
}

body.dark .banner {
  background: #2a2a2a;
  box-shadow: 0 8px 32px rgba(0, 0, 0, .3);
  border-color: rgba(255, 255, 255, .05);
}

.banner-slide {
  padding: 3rem 2rem;
  text-align: center;
  animation: fadeIn .8s ease;
  display: none;
}

.banner-slide.active {
  display: block;
}

.banner-slide h2 {
  font-size: 2.4rem;
  font-weight: 800;
  color: #f5a623;
  margin-bottom: 1rem;
  line-height: 1.3;
  text-shadow: 0 2px 8px rgba(245, 166, 35, .2);
}

.banner-slide p {
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto;
  opacity: .9;
  font-weight: 400;
}

.banner-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 1rem;
  position: relative;
  z-index: 5;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(0, 0, 0, .2);
  cursor: pointer;
  transition: all .3s;
  border: none;
}

body.dark .dot {
  background: rgba(255, 255, 255, .2);
}

.dot.active {
  background: #f5a623;
  transform: scale(1.2);
  box-shadow: 0 0 8px rgba(245, 166, 35, .4);
}

/* ==========================================
   网格卡片布局
   ========================================== */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
  margin: 2rem 0;
}

.card {
  background: #fff;
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, .04);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s;
  border: 1px solid #f0f0f0;
  position: relative;
  overflow: hidden;
}

body.dark .card {
  background: #1e1e1e;
  border-color: rgba(255, 255, 255, .08);
  box-shadow: 0 4px 12px rgba(0, 0, 0, .2);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, #f5a623, transparent);
  opacity: 0;
  transition: opacity .3s;
}

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

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 32px rgba(0, 0, 0, .1);
  border-color: rgba(245, 166, 35, .3);
}

body.dark .card:hover {
  box-shadow: 0 16px 32px rgba(0, 0, 0, .4);
}

.card h3 {
  color: #f5a623;
  margin-bottom: 8px;
  font-size: 1.2rem;
  font-weight: 700;
}

.card p {
  font-size: .95rem;
  opacity: .85;
  line-height: 1.6;
}

/* 按钮 */
.btn {
  display: inline-block;
  background: linear-gradient(135deg, #f5a623, #e08900);
  color: #fff;
  padding: .5rem 1.4rem;
  border-radius: 40px;
  text-decoration: none;
  font-weight: 600;
  margin-top: 1rem;
  transition: all .3s;
  box-shadow: 0 4px 12px rgba(245, 166, 35, .3);
  border: none;
  cursor: pointer;
  font-size: .95rem;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(245, 166, 35, .4);
  background: linear-gradient(135deg, #f7b53b, #e08900);
}

.btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(245, 166, 35, .3);
}

/* ==========================================
   区块标题
   ========================================== */
.section-title {
  font-size: 2rem;
  font-weight: 800;
  margin: 2.5rem 0 1.5rem;
  position: relative;
  line-height: 1.3;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, #f5a623, transparent);
  border-radius: 4px;
  margin-top: .3rem;
}

/* ==========================================
   数字统计区
   ========================================== */
.stats {
  display: flex;
  gap: 2rem;
  justify-content: center;
  margin: 3rem 0;
  flex-wrap: wrap;
  background: linear-gradient(145deg, rgba(245, 166, 35, .08), rgba(245, 166, 35, .02));
  border-radius: 24px;
  padding: 2.5rem 1rem;
  border: 1px solid rgba(245, 166, 35, .15);
}

.stat {
  text-align: center;
  min-width: 120px;
}

.stat span {
  font-size: 2.8rem;
  font-weight: 800;
  color: #f5a623;
  display: block;
  line-height: 1.2;
}

.stat p {
  margin-top: .3rem;
  font-weight: 500;
  opacity: .8;
}

/* ==========================================
   文章列表
   ========================================== */
.article-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.article-list .card {
  display: flex;
  flex-direction: column;
}

.article-list .card p {
  flex: 1;
}

.article-list .btn {
  align-self: flex-start;
}

/* ==========================================
   FAQ 样式
   ========================================== */
.faq-item {
  border-bottom: 1px solid rgba(128, 128, 128, .2);
  padding: 1rem 0;
  transition: background .2s;
}

body.dark .faq-item {
  border-color: rgba(255, 255, 255, .1);
}

.faq-q {
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.05rem;
  padding: .3rem 0;
  transition: color .2s;
}

.faq-q:hover {
  color: #f5a623;
}

.faq-q span {
  font-size: 1.4rem;
  font-weight: 400;
  transition: transform .3s;
  color: #f5a623;
  line-height: 1;
}

.faq-a {
  display: none;
  padding-top: .8rem;
  color: #555;
  line-height: 1.8;
  font-size: .95rem;
}

body.dark .faq-a {
  color: #aaa;
}

.faq-item.open .faq-a {
  display: block;
  animation: fadeIn .3s ease;
}

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

/* ==========================================
   HowTo 区块
   ========================================== */
#howto > div {
  background: linear-gradient(145deg, #f9f9f9, #f0f0f0);
  padding: 2rem;
  border-radius: 16px;
  border: 1px solid rgba(0, 0, 0, .05);
}

body.dark #howto > div {
  background: #1e1e1e;
  border-color: rgba(255, 255, 255, .08);
}

#howto p {
  margin-bottom: .5rem;
  line-height: 1.8;
}

#howto strong {
  color: #f5a623;
}

/* ==========================================
   页脚
   ========================================== */
footer {
  background: #fafafa;
  padding: 3rem 0 2rem;
  margin-top: 4rem;
  border-top: 1px solid rgba(128, 128, 128, .1);
}

body.dark footer {
  background: #1a1a1a;
  border-top-color: rgba(255, 255, 255, .08);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.footer-grid h4 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
  color: #f5a623;
  font-weight: 700;
}

.footer-grid a {
  color: inherit;
  text-decoration: none;
  display: block;
  margin: .4rem 0;
  opacity: .8;
  transition: all .2s;
  font-size: .95rem;
}

.footer-grid a:hover {
  color: #f5a623;
  opacity: 1;
  padding-left: 4px;
}

footer .container > div:last-child {
  margin-top: 2rem;
  border-top: 1px solid rgba(128, 128, 128, .15);
  padding-top: 1.2rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: .9rem;
  opacity: .7;
}

body.dark footer .container > div:last-child {
  border-top-color: rgba(255, 255, 255, .1);
}

/* ==========================================
   返回顶部按钮
   ========================================== */
#topBtn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: linear-gradient(145deg, #f5a623, #e08900);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  font-size: 1.5rem;
  cursor: pointer;
  display: none;
  z-index: 1000;
  box-shadow: 0 4px 16px rgba(245, 166, 35, .4);
  transition: all .3s;
  line-height: 1;
}

#topBtn:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(245, 166, 35, .5);
}

#topBtn:active {
  transform: scale(.95);
}

/* ==========================================
   工具类
   ========================================== */
.text-center {
  text-align: center;
}

.mt-2 {
  margin-top: 2rem;
}

.mb-2 {
  margin-bottom: 2rem;
}

/* ==========================================
   滚动动画
   ========================================== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all .6s cubic-bezier(.25, .8, .25, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================
   动画定义
   ========================================== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================
   响应式设计
   ========================================== */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, .95);
    backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 1rem 2rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, .08);
    gap: .5rem;
    border-bottom: 1px solid rgba(245, 166, 35, .1);
  }

  body.dark .nav-links {
    background: rgba(18, 18, 18, .95);
    border-bottom-color: rgba(255, 255, 255, .08);
  }

  .nav-links.active {
    display: flex;
    animation: fadeIn .3s ease;
  }

  .nav-links a {
    padding: .6rem 0;
    width: 100%;
    text-align: center;
    font-size: 1.05rem;
  }

  .nav-links a::after {
    display: none;
  }

  #darkToggle {
    margin-top: .5rem;
    width: 100%;
  }

  .menu-icon {
    display: block;
  }

  .banner-slide {
    padding: 2rem 1.5rem;
  }

  .banner-slide h2 {
    font-size: 1.8rem;
  }

  .banner-slide p {
    font-size: 1rem;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .stats {
    gap: 1.5rem;
    padding: 1.5rem .5rem;
  }

  .stat span {
    font-size: 2rem;
  }

  #topBtn {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
    font-size: 1.2rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .logo a {
    font-size: 1.5rem;
  }

  .grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .article-list {
    grid-template-columns: 1fr;
  }

  .card {
    padding: 1.2rem;
  }

  .banner-slide h2 {
    font-size: 1.5rem;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
}

/* 暗色模式图片调整 */
body.dark img {
  filter: brightness(.9);
}

/* 卡片图标 */
.card h3 {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 动画：卡片悬浮 */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}

/* 打印样式 */
@media print {
  .nav,
  footer,
  #topBtn,
  .banner-dots,
  .menu-icon {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .card {
    box-shadow: none;
    border: 1px solid #ddd;
  }
}
```