```css
/* ===== 抖漫全站样式 v2.0 ===== */
/* 作者：资深UI设计/前端工程 | 模块化语义化 | 响应式 + 暗色 */

/* ---------- 1. 设计令牌 & 重置 ---------- */
:root{
  --bg-page:#fbfdff;
  --bg-card:#ffffff;
  --bg-card-2:#f0f4f8;
  --bg-header:rgba(255,255,255,0.82);
  --bg-footer:#0f172a;
  --bg-hero:linear-gradient(145deg,#0b1e3a 0%,#1e3a5f 45%,#2563eb 100%);
  --text-primary:#1e293b;
  --text-secondary:#475569;
  --text-heading:#0b1b2a;
  --text-link:#1d4ed8;
  --text-btn:#ffffff;
  --text-soft:#94a3b8;
  --border-light:rgba(148,163,184,0.18);
  --border-medium:#cbd5e1;
  --brand:#2563eb;
  --brand-dark:#1e40af;
  --brand-glow:rgba(37,99,235,0.18);
  --gradient-main:linear-gradient(135deg,#2563eb 0%,#7c3aed 100%);
  --gradient-soft:linear-gradient(145deg, rgba(37,99,235,0.06) 0%, rgba(124,58,237,0.06) 100%);
  --shadow-sm:0 2px 8px rgba(15,23,42,0.04), 0 1px 2px rgba(15,23,42,0.03);
  --shadow-md:0 12px 28px -8px rgba(15,23,42,0.08), 0 4px 12px rgba(15,23,42,0.04);
  --shadow-lg:0 24px 48px -12px rgba(2,6,23,0.12);
  --glass-bg:rgba(255,255,255,0.65);
  --glass-border:rgba(255,255,255,0.4);
  --glass-shadow:0 8px 32px rgba(0,0,0,0.08), inset 0 1px 0 rgba(255,255,255,0.6);
  --radius-sm:12px;
  --radius-md:20px;
  --radius-lg:28px;
  --radius-full:999px;
  --blur:blur(16px);
  --transition:all 0.35s cubic-bezier(0.4,0,0.2,1);
  --font-sans:system-ui, -apple-system, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

[data-theme="dark"]{
  --bg-page:#0b1220;
  --bg-card:#111c30;
  --bg-card-2:#1a2740;
  --bg-header:rgba(10,15,30,0.78);
  --bg-footer:#0b1525;
  --bg-hero:linear-gradient(145deg,#020617 0%,#0f172a 50%,#1e293b 100%);
  --text-primary:#e2e8f0;
  --text-secondary:#94a3b8;
  --text-heading:#f1f5f9;
  --text-link:#93c5fd;
  --text-btn:#0f172a;
  --text-soft:#64748b;
  --border-light:rgba(148,163,184,0.14);
  --border-medium:#334155;
  --brand:#3b82f6;
  --brand-dark:#2563eb;
  --brand-glow:rgba(59,130,246,0.2);
  --gradient-main:linear-gradient(135deg,#3b82f6 0%,#8b5cf6 100%);
  --gradient-soft:linear-gradient(145deg, rgba(59,130,246,0.08) 0%, rgba(139,92,246,0.08) 100%);
  --shadow-sm:0 2px 8px rgba(0,0,0,0.3);
  --shadow-md:0 12px 28px -8px rgba(0,0,0,0.45);
  --shadow-lg:0 24px 48px -12px rgba(0,0,0,0.5);
  --glass-bg:rgba(15,23,42,0.6);
  --glass-border:rgba(148,163,184,0.12);
  --glass-shadow:0 8px 32px rgba(0,0,0,0.3), inset 0 1px 0 rgba(148,163,184,0.08);
}

*{
  margin:0;
  padding:0;
  box-sizing:border-box;
  transition: background-color .25s ease, border-color .25s ease, color .2s ease, box-shadow .25s ease;
}

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

body{
  font-family:var(--font-sans);
  background-color:var(--bg-page);
  color:var(--text-primary);
  line-height:1.7;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

img,svg,video{max-width:100%; display:block;}
a{color:var(--text-link); text-decoration:none; font-weight:500; transition:color .2s ease;}
a:hover{color:var(--brand); text-decoration:underline;}
h1,h2,h3,h4,h5{color:var(--text-heading); line-height:1.3; font-weight:700; letter-spacing:-0.02em;}
h1{font-size:clamp(2rem, 5vw, 3.2rem); margin-bottom:1rem; font-weight:800;}
h2{font-size:clamp(1.5rem, 3vw, 2.2rem); margin:2.5rem 0 1.5rem; border-left:5px solid var(--brand); padding-left:1.2rem; position:relative;}
h2::after{content:''; position:absolute; left:0; bottom:-8px; width:40px; height:3px; background:var(--gradient-main); border-radius:4px;}
h3{font-size:1.35rem; margin:1.5rem 0 .8rem;}
h4{font-size:1.1rem; margin:1rem 0 .5rem; font-weight:600;}
p{color:var(--text-primary); margin-bottom:1.2rem; line-height:1.8;}
ul,ol{margin-left:1.8rem; margin-bottom:1.2rem; color:var(--text-primary);}
li{margin-bottom:0.4rem;}
strong{font-weight:700; color:var(--text-heading);}
em{font-style:italic;}

/* ---------- 2. 布局工具 ---------- */
.container{
  width:100%;
  max-width:1320px;
  margin:0 auto;
  padding:0 clamp(16px, 4vw, 40px);
}

.text-secondary{color:var(--text-secondary);}
.text-soft{color:var(--text-soft);}
.text-center{text-align:center;}
.mt-1{margin-top:1rem;}
.mb-1{margin-bottom:1rem;}
.mt-2{margin-top:2rem;}
.mb-2{margin-bottom:2rem;}
.sr-only{position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border-width:0;}

/* ---------- 3. 按钮 & 交互元素 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:0.5rem;
  background:var(--brand);
  color:var(--text-btn);
  padding:0.7rem 2rem;
  border-radius:var(--radius-full);
  font-weight:600;
  font-size:1rem;
  border:none;
  cursor:pointer;
  text-decoration:none;
  box-shadow:0 4px 16px var(--brand-glow);
  transition:all 0.3s cubic-bezier(0.4,0,0.2,1);
  position:relative;
  overflow:hidden;
  letter-spacing:0.01em;
}
.btn::before{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(120deg, transparent, rgba(255,255,255,0.2), transparent);
  transform:translateX(-100%);
  transition:transform 0.6s ease;
}
.btn:hover{
  background:var(--brand-dark);
  transform:translateY(-3px) scale(1.02);
  box-shadow:0 10px 30px var(--brand-glow);
  text-decoration:none;
  color:var(--text-btn);
}
.btn:hover::before{transform:translateX(100%);}
.btn:active{transform:translateY(-1px) scale(0.98);}
.btn-outline{
  background:transparent;
  border:2px solid var(--brand);
  color:var(--brand);
  box-shadow:none;
}
.btn-outline:hover{
  background:var(--brand);
  color:#fff;
  border-color:var(--brand);
}
.btn-sm{padding:0.5rem 1.2rem; font-size:0.9rem;}
.btn-lg{padding:0.9rem 2.5rem; font-size:1.1rem;}
.btn-block{width:100%;}

/* ---------- 4. 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:var(--bg-header);
  backdrop-filter:var(--blur);
  -webkit-backdrop-filter:var(--blur);
  border-bottom:1px solid var(--border-light);
  box-shadow:0 2px 20px rgba(0,0,0,0.03);
}
.header-flex{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0.8rem 0;
  gap:1rem;
}
.logo{
  font-size:1.8rem;
  font-weight:800;
  color:var(--text-heading);
  letter-spacing:-0.03em;
  display:flex;
  align-items:center;
  gap:0.2rem;
  text-decoration:none;
  background:linear-gradient(135deg, var(--brand) 0%, #8b5cf6 100%);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  transition:transform 0.3s ease;
}
.logo:hover{transform:scale(1.03); text-decoration:none;}
.logo span{font-size:2rem;}

.nav-links{
  display:flex;
  gap:clamp(1rem, 2.5vw, 2.2rem);
  align-items:center;
}
.nav-links a{
  color:var(--text-primary);
  font-weight:500;
  position:relative;
  padding:0.3rem 0;
  text-decoration:none;
  transition:color 0.2s ease;
}
.nav-links a::after{
  content:'';
  position:absolute;
  bottom:-2px;
  left:0;
  width:0;
  height:2px;
  background:var(--gradient-main);
  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%;}

.header-actions{
  display:flex;
  align-items:center;
  gap:0.8rem;
}
.search-box{
  position:relative;
}
.search-box input{
  padding:0.6rem 1.2rem 0.6rem 2.5rem;
  border-radius:var(--radius-full);
  border:1px solid var(--border-medium);
  background:var(--bg-card);
  color:var(--text-primary);
  font-size:0.9rem;
  width:180px;
  transition:all 0.3s ease;
  outline:none;
}
.search-box input:focus{
  width:220px;
  border-color:var(--brand);
  box-shadow:0 0 0 3px var(--brand-glow);
}
.search-box svg{
  position:absolute;
  left:0.8rem;
  top:50%;
  transform:translateY(-50%);
  width:18px;
  height:18px;
  color:var(--text-soft);
  pointer-events:none;
}
.dark-toggle{
  background:var(--bg-card);
  border:1px solid var(--border-medium);
  color:var(--text-primary);
  border-radius:var(--radius-full);
  padding:0.55rem 0.9rem;
  cursor:pointer;
  font-size:1.1rem;
  line-height:1;
  transition:all 0.3s ease;
  display:flex;
  align-items:center;
  justify-content:center;
}
.dark-toggle:hover{
  border-color:var(--brand);
  transform:rotate(15deg);
  box-shadow:0 0 12px var(--brand-glow);
}
.menu-mobile{
  display:none;
  font-size:1.8rem;
  background:none;
  border:none;
  color:var(--text-primary);
  cursor:pointer;
  line-height:1;
  padding:0.3rem;
}

/* ---------- 5. Hero 部分 ---------- */
.hero{
  background:var(--bg-hero);
  color:#fff;
  padding:clamp(3rem, 8vw, 6rem) 0;
  position:relative;
  overflow:hidden;
  isolation:isolate;
}
.hero::before{
  content:'';
  position:absolute;
  inset:0;
  background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity:0.5;
  z-index:-1;
}
.hero::after{
  content:'';
  position:absolute;
  top:-50%;
  right:-20%;
  width:60%;
  height:200%;
  background:radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
  pointer-events:none;
}
.hero-content{
  position:relative;
  z-index:2;
  max-width:850px;
}
.hero h1{
  color:#fff;
  font-size:clamp(2.2rem, 6vw, 4rem);
  font-weight:800;
  line-height:1.1;
  margin-bottom:1.2rem;
  text-shadow:0 4px 30px rgba(0,0,0,0.2);
  letter-spacing:-0.02em;
}
.hero h1 .highlight{
  background:linear-gradient(120deg, #fbbf24, #f59e0b);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero p{
  color:rgba(255,255,255,0.9);
  font-size:clamp(1.1rem, 2vw, 1.4rem);
  max-width:650px;
  line-height:1.7;
  margin-bottom:2rem;
  text-shadow:0 2px 10px rgba(0,0,0,0.15);
}
.hero-cta{
  display:flex;
  gap:1rem;
  flex-wrap:wrap;
  margin-bottom:2rem;
}
.hero-meta{
  display:flex;
  align-items:center;
  gap:1.5rem;
  flex-wrap:wrap;
  color:rgba(255,255,255,0.7);
  font-size:0.9rem;
  padding-top:1.2rem;
  border-top:1px solid rgba(255,255,255,0.15);
}
.hero-meta span{
  display:inline-flex;
  align-items:center;
  gap:0.4rem;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:0.5rem;
  background:rgba(255,255,255,0.1);
  backdrop-filter:blur(10px);
  border:1px solid rgba(255,255,255,0.15);
  padding:0.4rem 1rem;
  border-radius:var(--radius-full);
  font-size:0.85rem;
  color:#fff;
  margin-bottom:1.5rem;
}

/* ---------- 6. 卡片网格 & 卡片 ---------- */
.section{
  padding:clamp(2.5rem, 6vw, 5rem) 0;
}
.card-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(300px, 1fr));
  gap:clamp(1.2rem, 3vw, 2rem);
  margin:2rem 0;
}
.card{
  background:var(--bg-card);
  border-radius:var(--radius-md);
  padding:clamp(1.5rem, 3vw, 2.2rem);
  border:1px solid var(--border-light);
  box-shadow:var(--shadow-sm);
  transition:all 0.4s cubic-bezier(0.4,0,0.2,1);
  position:relative;
  overflow:hidden;
}
.card::before{
  content:'';
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:3px;
  background:var(--gradient-main);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform 0.4s ease;
}
.card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-md);
  border-color:var(--brand-glow);
}
.card:hover::before{transform:scaleX(1);}
.card h3{
  font-size:1.3rem;
  margin-bottom:0.8rem;
  display:flex;
  align-items:center;
  gap:0.6rem;
}
.card h3 .card-icon{
  font-size:1.8rem;
}
.card p{
  color:var(--text-secondary);
  font-size:0.95rem;
  margin-bottom:0.8rem;
}
.card .card-meta{
  font-size:0.85rem;
  color:var(--text-soft);
  margin-top:1rem;
  padding-top:0.8rem;
  border-top:1px solid var(--border-light);
  display:flex;
  justify-content:space-between;
  align-items:center;
}
.card .card-tag{
  display:inline-block;
  background:var(--gradient-soft);
  color:var(--brand);
  padding:0.2rem 0.8rem;
  border-radius:var(--radius-full);
  font-size:0.8rem;
  font-weight:600;
}

/* 玻璃卡片 */
.glass-card{
  background:var(--glass-bg);
  backdrop-filter:var(--blur);
  -webkit-backdrop-filter:var(--blur);
  border:1px solid var(--glass-border);
  box-shadow:var(--glass-shadow);
  border-radius:var(--radius-md);
  padding:2rem;
}

/* ---------- 7. 表格 ---------- */
.table-wrapper{
  overflow-x:auto;
  margin:1.5rem 0;
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-sm);
}
table{
  width:100%;
  border-collapse:collapse;
  background:var(--bg-card);
  border-radius:var(--radius-md);
  overflow:hidden;
  font-size:0.95rem;
}
thead th{
  background:var(--gradient-main);
  color:white;
  font-weight:600;
  padding:1rem 1.5rem;
  text-align:left;
  white-space:nowrap;
}
tbody td{
  padding:0.9rem 1.5rem;
  border-bottom:1px solid var(--border-light);
  color:var(--text-primary);
}
tbody tr:last-child td{border-bottom:none;}
tbody tr{
  transition:background 0.2s ease;
}
tbody tr:hover{
  background:var(--gradient-soft);
}

/* ---------- 8. 文章列表 ---------- */
.article-list{
  display:grid;
  gap:1.2rem;
}
.article-item{
  background:var(--bg-card);
  border-radius:var(--radius-md);
  padding:1.5rem 1.8rem;
  border:1px solid var(--border-light);
  transition:all 0.3s ease;
  display:flex;
  flex-direction:column;
  gap:0.4rem;
  position:relative;
  overflow:hidden;
}
.article-item:hover{
  transform:translateX(6px);
  border-color:var(--brand-glow);
  box-shadow:var(--shadow-sm);
}
.article-item h4{
  font-size:1.15rem;
  margin:0;
  color:var(--text-heading);
  transition:color 0.2s;
}
.article-item:hover h4{color:var(--brand);}
.article-meta{
  font-size:0.85rem;
  color:var(--text-soft);
  display:flex;
  align-items:center;
  gap:0.6rem;
  flex-wrap:wrap;
}
.article-meta .separator{
  width:3px;
  height:3px;
  background:var(--text-soft);
  border-radius:50%;
  display:inline-block;
}
.article-item p{
  font-size:0.95rem;
  color:var(--text-secondary);
  margin-bottom:0.5rem;
  line-height:1.7;
}
.article-item .read-more{
  align-self:flex-start;
  font-size:0.9rem;
  font-weight:600;
  color:var(--brand);
  display:inline-flex;
  align-items:center;
  gap:0.3rem;
  margin-top:auto;
  padding-top:0.5rem;
}
.article-item .read-more:hover{text-decoration:none; gap:0.6rem;}
.article-item .read-more svg{transition:transform 0.2s;}

/* ---------- 9. FAQ ---------- */
.faq-list{
  display:grid;
  gap:1rem;
}
.faq-item{
  background:var(--bg-card);
  border-radius:var(--radius-md);
  border:1px solid var(--border-light);
  overflow:hidden;
  transition:box-shadow 0.3s ease;
}
.faq-item.open{
  box-shadow:var(--shadow-sm);
  border-color:var(--brand-glow);
}
.faq-q{
  padding:1.2rem 1.5rem;
  font-weight:600;
  color:var(--text-heading);
  cursor:pointer;
  position:relative;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:1rem;
  transition:background 0.2s;
  font-size:1rem;
}
.faq-q:hover{background:var(--gradient-soft);}
.faq-q::after{
  content:'+';
  font-size:1.5rem;
  font-weight:300;
  color:var(--brand);
  transition:transform 0.3s ease;
  flex-shrink:0;
}
.faq-item.open .faq-q::after{
  transform:rotate(45deg);
}
.faq-a{
  padding:0 1.5rem 1.2rem;
  color:var(--text-secondary);
  line-height:1.8;
  display:none;
  font-size:0.95rem;
}
.faq-item.open .faq-a{
  display:block;
  animation:fadeSlideIn 0.4s ease;
}

/* ---------- 10. HowTo / Tutorial ---------- */
.howto-card{
  background:var(--bg-card);
  border-radius:var(--radius-lg);
  padding:clamp(1.5rem, 4vw, 2.5rem);
  border:1px solid var(--border-light);
  box-shadow:var(--shadow-sm);
  position:relative;
  overflow:hidden;
}
.howto-card::before{
  content:'';
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:4px;
  background:var(--gradient-main);
}
.howto-card ol{
  counter-reset:howto;
  list-style:none;
  margin-left:0;
}
.howto-card ol li{
  counter-increment:howto;
  position:relative;
  padding-left:3.5rem;
  margin-bottom:1.2rem;
  font-size:1.05rem;
  color:var(--text-primary);
}
.howto-card ol li::before{
  content:counter(howto);
  position:absolute;
  left:0;
  top:0.1rem;
  width:2.2rem;
  height:2.2rem;
  background:var(--gradient-main);
  color:white;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:0.9rem;
  font-weight:700;
  box-shadow:0 4px 12px var(--brand-glow);
}
.howto-card ul{
  list-style:none;
  margin-left:0;
}
.howto-card ul li{
  position:relative;
  padding-left:1.5rem;
  margin-bottom:0.6rem;
}
.howto-card ul li::before{
  content:'✓';
  position:absolute;
  left:0;
  color:var(--brand);
  font-weight:700;
}
.howto-note{
  background:var(--gradient-soft);
  border-left:4px solid var(--brand);
  padding:1rem 1.5rem;
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  margin:1.5rem 0;
  font-size:0.95rem;
}

/* ---------- 11. 联系 / 信息 ---------- */
.contact-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(250px, 1fr));
  gap:1.5rem;
  margin:2rem 0;
}
.contact-item{
  background:var(--bg-card);
  padding:1.5rem;
  border-radius:var(--radius-md);
  border:1px solid var(--border-light);
  text-align:center;
  transition:all 0.3s ease;
}
.contact-item:hover{
  transform:translateY(-5px);
  box-shadow:var(--shadow-sm);
}
.contact-item .contact-icon{
  font-size:2.5rem;
  margin-bottom:0.8rem;
  display:block;
}
.contact-item h4{
  margin-bottom:0.4rem;
}
.contact-item p{
  color:var(--text-secondary);
  margin:0;
  font-size:0.95rem;
}

/* ---------- 12. 页脚 ---------- */
footer{
  background:var(--bg-footer);
  color:var(--footer-text, #cbd5e1);
  padding:clamp(2.5rem, 5vw, 4rem) 0 1.5rem;
  margin-top:clamp(3rem, 8vw, 5rem);
  position:relative;
}
footer h4{
  color:var(--footer-heading, #fff);
  font-size:1.1rem;
  margin-bottom:1rem;
  position:relative;
  padding-bottom:0.5rem;
}
footer h4::after{
  content:'';
  position:absolute;
  bottom:0;
  left:0;
  width:30px;
  height:2px;
  background:var(--brand);
  border-radius:2px;
}
footer a{
  color:var(--footer-text, #cbd5e1);
  text-decoration:none;
  transition:color 0.2s;
}
footer a:hover{
  color:#fff;
  text-decoration:underline;
}
.footer-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(200px, 1fr));
  gap:clamp(1.5rem, 4vw, 3rem);
  margin-bottom:2.5rem;
}
.footer-brand p{
  color:var(--footer-text, #94a3b8);
  font-size:0.95rem;
  margin-top:0.8rem;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:0.5rem;
}
.footer-links a{
  font-size:0.95rem;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.1);
  padding-top:1.5rem;
  text-align:center;
  color:var(--footer-text, #94a3b8);
  font-size:0.85rem;
  display:flex;
  flex-direction:column;
  gap:0.5rem;
  align-items:center;
}
.footer-bottom .legal-links{
  display:flex;
  gap:1.2rem;
  flex-wrap:wrap;
  justify-content:center;
}
.footer-bottom .legal-links a{
  color:var(--footer-text, #94a3b8);
  font-size:0.85rem;
}
.footer-bottom .legal-links a:hover{color:#fff;}
.footer-social{
  display:flex;
  gap:0.8rem;
  margin-top:0.5rem;
}
.footer-social a{
  width:36px;
  height:36px;
  border-radius:50%;
  background:rgba(255,255,255,0.1);
  display:flex;
  align-items:center;
  justify-content:center;
  transition:all 0.3s;
}
.footer-social a:hover{
  background:var(--brand);
  text-decoration:none;
  transform:translateY(-3px);
}

/* ---------- 13. 滚动动画 ---------- */
.reveal{
  opacity:0;
  transform:translateY(30px);
  transition:opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible{
  opacity:1;
  transform:translateY(0);
}
.reveal-delay-1{transition-delay:0.1s;}
.reveal-delay-2{transition-delay:0.2s;}
.reveal-delay-3{transition-delay:0.3s;}

/* ---------- 14. 徽章 / 标签 ---------- */
.badge{
  display:inline-block;
  background:var(--gradient-main);
  color:white;
  padding:0.3rem 1rem;
  border-radius:var(--radius-full);
  font-size:0.8rem;
  font-weight:600;
  letter-spacing:0.02em;
  box-shadow:0 2px 8px var(--brand-glow);
}
.badge-outline{
  background:transparent;
  border:1px solid var(--brand);
  color:var(--brand);
  box-shadow:none;
}
.tag{
  display:inline-block;
  background:var(--gradient-soft);
  color:var(--brand);
  padding:0.2rem 0.8rem;
  border-radius:var(--radius-full);
  font-size:0.8rem;
  font-weight:500;
  margin-right:0.4rem;
  margin-bottom:0.4rem;
}

/* ---------- 15. 动画 ---------- */
@keyframes fadeSlideIn{
  from{opacity:0; transform:translateY(-8px);}
  to{opacity:1; transform:translateY(0);}
}
@keyframes float{
  0%,100%{transform:translateY(0);}
  50%{transform:translateY(-10px);}
}
@keyframes pulse{
  0%,100%{opacity:1;}
  50%{opacity:0.6;}
}
@keyframes shimmer{
  0%{background-position:-1000px 0;}
  100%{background-position:1000px 0;}
}
.animate-float{animation:float 3s ease-in-out infinite;}
.animate-pulse{animation:pulse 2s ease-in-out infinite;}

/* ---------- 16. 响应式 ---------- */
@media (max-width: 1024px){
  .card-grid{
    grid-template-columns:repeat(auto-fill, minmax(260px, 1fr));
  }
  .search-box input{
    width:150px;
  }
  .search-box input:focus{
    width:180px;
  }
}

@media (max-width: 768px){
  .header-flex{
    flex-wrap:wrap;
    gap:0.5rem;
  }
  .nav-links{
    display:none;
    flex-direction:column;
    position:fixed;
    top:0;
    right:0;
    height:100vh;
    width:280px;
    background:var(--bg-header);
    backdrop-filter:var(--blur);
    -webkit-backdrop-filter:var(--blur);
    padding:5rem 2rem 2rem;
    gap:1.2rem;
    box-shadow:-10px 0 30px rgba(0,0,0,0.1);
    z-index:999;
    transition:transform 0.4s ease;
    transform:translateX(100%);
    border-left:1px solid var(--border-light);
  }
  .nav-links.active{
    display:flex;
    transform:translateX(0);
  }
  .nav-links a{
    font-size:1.1rem;
    padding:0.5rem 0;
    border-bottom:1px solid var(--border-light);
  }
  .menu-mobile{
    display:block;
  }
  .search-box{
    display:none;
  }
  .hero{
    border-radius:0;
  }
  .hero-content{
    padding:1rem 0;
  }
  .hero-meta{
    gap:0.8rem;
    font-size:0.8rem;
  }
  .card-grid{
    grid-template-columns:1fr;
    gap:1.2rem;
  }
  .article-item{
    padding:1.2rem;
  }
  .footer-grid{
    grid-template-columns:1fr 1fr;
    gap:1.5rem;
  }
  .contact-grid{
    grid-template-columns:1fr;
  }
  h2{
    font-size:1.6rem;
  }
  .table-wrapper{
    margin:1rem -1rem;
    padding:0 1rem;
  }
}

@media (max-width: 480px){
  .footer-grid{
    grid-template-columns:1fr;
  }
  .hero{
    padding:3rem 0;
  }
  .hero h1{
    font-size:2rem;
  }
  .btn{
    padding:0.6rem 1.4rem;
    font-size:0.9rem;
  }
  .card{
    padding:1.5rem;
  }
  .faq-q{
    padding:1rem;
    font-size:0.95rem;
  }
  .faq-a{
    padding:0 1rem 1rem;
  }
  .container{
    padding:0 1rem;
  }
}

/* ---------- 17. 无障碍 ---------- */
@media (prefers-reduced-motion: reduce){
  *, *::before, *::after{
    animation-duration:0.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:0.01ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{
    opacity:1;
    transform:none;
  }
}
:focus-visible{
  outline:3px solid var(--brand);
  outline-offset:2px;
  border-radius:4px;
}
::selection{
  background:var(--brand);
  color:white;
}

/* ---------- 18. 滚动条 ---------- */
::-webkit-scrollbar{
  width:8px;
  height:8px;
}
::-webkit-scrollbar-track{
  background:var(--bg-page);
}
::-webkit-scrollbar-thumb{
  background:var(--border-medium);
  border-radius:4px;
}
::-webkit-scrollbar-thumb:hover{
  background:var(--brand);
}

/* ---------- 19. 工具类 ---------- */
.gradient-text{
  background:var(--gradient-main);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.gradient-bg{
  background:var(--gradient-main);
}
.gradient-border{
  border:2px solid transparent;
  background-image:linear-gradient(var(--bg-card), var(--bg-card)), var(--gradient-main);
  background-origin:border-box;
  background-clip:padding-box, border-box;
}
.divider{
  width:60px;
  height:4px;
  background:var(--gradient-main);
  border-radius:4px;
  margin:1.5rem 0;
}
.divider-center{
  margin-left:auto;
  margin-right:auto;
}
.shadow-hover:hover{
  box-shadow:var(--shadow-md);
}
.rounded-full{border-radius:var(--radius-full);}
.rounded-lg{border-radius:var(--radius-lg);}
.rounded-md{border-radius:var(--radius-md);}

/* ---------- 20. 打印样式 ---------- */
@media print{
  .site-header, .hero, footer, .dark-toggle, .menu-mobile, .search-box, .btn{
    display:none !important;
  }
  body{
    background:white;
    color:black;
  }
  .card{
    box-shadow:none;
    border:1px solid #ddd;
    break-inside:avoid;
  }
}
```