/* roulang page: index */
:root{
  --primary:#2563EB;
  --primary-dark:#1D4ED8;
  --primary-light:#EFF6FF;
  --bg-body:#F5F8FC;
  --bg-card:#FFFFFF;
  --text-title:#0F172A;
  --text-body:#334155;
  --text-muted:#64748B;
  --border-color:#E2E8F0;
  --radius-card:1rem;
  --radius-btn:9999px;
  --shadow-card:0 4px 20px rgba(37,99,235,0.06);
  --shadow-hover:0 12px 32px rgba(37,99,235,0.12);
}
*{margin:0;padding:0;box-sizing:border-box;}
body{background:var(--bg-body);color:var(--text-body);font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;line-height:1.6;padding-bottom:80px;}
.container{max-width:1280px;margin:0 auto;padding:0 24px;}
a{color:inherit;text-decoration:none;transition:all 0.25s ease;}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
.section{padding:80px 0;}
.section-head{margin-bottom:44px;}
.section-head .eyebrow{display:inline-block;font-size:14px;font-weight:600;color:var(--primary);background:var(--primary-light);padding:6px 16px;border-radius:9999px;margin-bottom:12px;}
.section-head h2{font-size:32px;font-weight:700;color:var(--text-title);line-height:1.3;letter-spacing:-0.02em;}
.section-head p{margin-top:12px;font-size:16px;color:var(--text-muted);max-width:680px;}
/* header */
.site-header{background:var(--bg-card);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:50;box-shadow:0 2px 12px rgba(15,23,42,0.04);}
.brand-row{display:flex;align-items:center;justify-content:space-between;padding:18px 0;}
.logo{display:flex;align-items:center;gap:10px;font-size:24px;font-weight:800;color:var(--text-title);letter-spacing:-0.02em;}
.logo-icon{width:38px;height:38px;background:linear-gradient(135deg,#2563EB,#1D4ED8);border-radius:12px;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 14px rgba(37,99,235,0.3);}
.logo-icon svg{width:22px;height:22px;stroke:#fff;fill:none;}
.header-right{display:flex;align-items:center;gap:12px;}
.search-box{display:flex;align-items:center;background:#F1F5F9;border-radius:9999px;padding:4px 6px 4px 16px;border:1px solid transparent;}
.search-box input{background:transparent;border:none;outline:none;font-size:14px;color:var(--text-body);width:160px;}
.search-box button{background:var(--primary);border-radius:9999px;padding:8px 16px;font-size:13px;font-weight:500;color:#fff;transition:background 0.2s;}
.search-box button:hover{background:var(--primary-dark);}
.btn-primary{background:var(--primary);color:#fff!important;border-radius:9999px;padding:10px 24px;font-size:14px;font-weight:600;transition:all 0.25s;display:inline-flex;align-items:center;gap:6px;box-shadow:0 4px 14px rgba(37,99,235,0.25);}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 24px rgba(37,99,235,0.3);}
.btn-outline{border:1px solid var(--border-color);background:#fff;color:var(--text-body)!important;border-radius:9999px;padding:10px 24px;font-size:14px;font-weight:500;transition:all 0.25s;display:inline-flex;align-items:center;gap:6px;}
.btn-outline:hover{border-color:var(--primary);color:var(--primary)!important;}
/* nav grid */
.nav-grid{border-top:1px solid var(--border-color);padding:14px 0;display:flex;align-items:center;gap:8px;}
.nav-item{display:flex;align-items:center;gap:8px;padding:8px 18px;border-radius:12px;font-size:15px;font-weight:500;color:var(--text-muted);transition:all 0.2s;}
.nav-item svg{width:18px;height:18px;stroke:currentColor;fill:none;}
.nav-item:hover{background:var(--primary-light);color:var(--primary);}
.nav-item.active{background:var(--primary);color:#fff;box-shadow:0 4px 14px rgba(37,99,235,0.25);}
.nav-item.active:hover{background:var(--primary-dark);color:#fff;}
/* hero */
.hero{background:linear-gradient(135deg,#F8FAFC 0%,#EFF6FF 50%,#DBEAFE 100%);position:relative;overflow:hidden;padding:60px 0 40px;}
.hero-content{position:relative;z-index:2;text-align:center;padding:24px 0;}
.hero h1{font-size:52px;font-weight:800;color:var(--text-title);letter-spacing:-0.03em;line-height:1.2;max-width:800px;margin:0 auto 20px;}
.hero h1 .accent{background:linear-gradient(120deg,#2563EB,#3B82F6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;}
.hero-sub{font-size:18px;color:var(--text-body);max-width:640px;margin:0 auto 28px;line-height:1.7;}
/* hero marquee belt */
.hero-belt{display:flex;align-items:center;justify-content:space-between;gap:48px;max-width:960px;margin:40px auto 0;padding:24px 36px;background:rgba(255,255,255,0.7);backdrop-filter:blur(8px);border-radius:20px;border:1px solid rgba(255,255,255,0.9);box-shadow:0 16px 48px rgba(37,99,235,0.08);}
.belt-item{text-align:center;flex:1;}
.belt-num{display:block;font-size:30px;font-weight:800;color:var(--primary);line-height:1.2;}
.belt-label{font-size:13px;color:var(--text-muted);margin-top:4px;display:block;}
/* rail / vertical cards */
.rail-row{display:flex;gap:24px;overflow-x:auto;padding-bottom:20px;scroll-snap-type:x mandatory;}
.rail-row::-webkit-scrollbar{height:4px;}
.rail-row::-webkit-scrollbar-thumb{background:#CBD5E1;border-radius:4px;}
.rail-card{min-width:260px;max-width:280px;background:var(--bg-card);border-radius:16px;overflow:hidden;border:1px solid var(--border-color);box-shadow:var(--shadow-card);transition:all 0.3s;scroll-snap-align:start;}
.rail-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:#BFDBFE;}
.rail-thumb{height:180px;background:linear-gradient(135deg,#DBEAFE,#EFF6FF);position:relative;display:flex;align-items:center;justify-content:center;}
.rail-thumb .play-btn{width:52px;height:52px;background:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 24px rgba(37,99,235,0.4);transition:transform 0.3s;}
.rail-card:hover .play-btn{transform:scale(1.1);}
.rail-thumb .play-btn svg{width:20px;height:20px;fill:#fff;}
.rail-tag{position:absolute;top:12px;left:12px;background:rgba(15,23,42,0.7);backdrop-filter:blur(4px);color:#fff;font-size:12px;padding:4px 12px;border-radius:9999px;}
.rail-body{padding:16px;}
.rail-body h3{font-size:16px;font-weight:600;color:var(--text-title);margin-bottom:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.rail-body p{font-size:13px;color:var(--text-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rail-meta{display:flex;align-items:center;justify-content:space-between;margin-top:10px;font-size:12px;color:var(--text-muted);}
.rail-meta .score{color:#F59E0B;font-weight:700;font-size:13px;}
/* hot list */
.hot-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.hot-card{display:flex;gap:16px;background:var(--bg-card);border-radius:16px;padding:16px;border:1px solid var(--border-color);box-shadow:var(--shadow-card);transition:all 0.3s;}
.hot-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);}
.hot-rank{font-size:28px;font-weight:800;color:#CBD5E1;line-height:1;min-width:44px;text-align:center;}
.hot-card:nth-child(-n+3) .hot-rank{color:var(--primary);}
.hot-info{flex:1;min-width:0;}
.hot-info h3{font-size:16px;font-weight:600;color:var(--text-title);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.hot-info p{font-size:13px;color:var(--text-muted);margin-top:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.hot-meta{display:flex;align-items:center;gap:12px;margin-top:10px;font-size:12px;color:var(--text-muted);flex-wrap:wrap;}
.hot-meta .badge{background:var(--primary-light);color:var(--primary);border-radius:6px;padding:2px 8px;font-size:11px;}
/* list sections */
.split-list{display:grid;grid-template-columns:3fr 2fr;gap:32px;}
.list-main{display:flex;flex-direction:column;gap:12px;}
.list-card{display:flex;justify-content:space-between;align-items:center;background:var(--bg-card);border-radius:12px;padding:14px 16px;border:1px solid var(--border-color);transition:all 0.25s;}
.list-card:hover{border-color:#BFDBFE;box-shadow:var(--shadow-card);transform:translateX(4px);}
.list-card .rank{width:36px;font-weight:700;color:var(--primary);font-size:18px;}
.list-card .name{flex:1;font-size:15px;font-weight:500;color:var(--text-title);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.list-card .meta{font-size:12px;color:var(--text-muted);margin-right:8px;}
/* news */
.news-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:24px;}
.news-item{background:var(--bg-card);border-radius:16px;padding:20px;border:1px solid var(--border-color);transition:all 0.3s;}
.news-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px);}
.news-item h3{font-size:16px;font-weight:600;color:var(--text-title);margin-bottom:8px;line-height:1.4;}
.news-item p{font-size:13px;color:var(--text-muted);line-height:1.6;margin-bottom:12px;}
.news-meta{font-size:12px;color:var(--text-muted);display:flex;align-items:center;gap:8px;}
/* testimonial */
.testimonial-grid{display:grid;grid-template-columns:1fr 2fr;gap:32px;align-items:start;}
.testimonial-summary{background:var(--bg-card);border-radius:20px;padding:32px;border:1px solid var(--border-color);text-align:center;box-shadow:var(--shadow-card);}
.score-big{font-size:64px;font-weight:800;color:var(--text-title);line-height:1;}
.stars{color:#F59E0B;font-size:18px;margin:12px 0 8px;letter-spacing:2px;}
.testimonial-item{background:var(--bg-card);border-radius:16px;padding:20px 24px;margin-bottom:16px;border:1px solid var(--border-color);box-shadow:var(--shadow-card);display:flex;gap:14px;}
.testimonial-item .avatar{width:42px;height:42px;border-radius:50%;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0;}
.t-quote{font-size:15px;color:var(--text-body);line-height:1.7;}
.t-name{font-size:13px;color:var(--text-muted);margin-top:8px;}
/* faq */
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{background:var(--bg-card);border-radius:14px;border:1px solid var(--border-color);overflow:hidden;transition:all 0.3s;}
.faq-item summary{list-style:none;display:flex;justify-content:space-between;align-items:center;padding:18px 24px;font-weight:500;color:var(--text-title);font-size:16px;cursor:pointer;transition:background 0.2s;}
.faq-item summary:hover{background:#F8FAFC;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item[open]{border-color:#BFDBFE;box-shadow:var(--shadow-card);}
.faq-answer{padding:0 24px 20px;color:var(--text-muted);line-height:1.7;font-size:15px;border-top:1px dashed var(--border-color);margin-top:0;}
.faq-answer p{padding-top:12px;}
.chevron{transition:transform 0.3s;width:20px;height:20px;color:var(--text-muted);flex-shrink:0;}
.faq-item[open] .chevron{transform:rotate(180deg);}
/* cta */
.cta-section{background:linear-gradient(120deg,#EFF6FF,#DBEAFE);border-radius:28px;padding:48px 48px;position:relative;overflow:hidden;border:1px solid #BFDBFE;}
.cta-section h2{font-size:32px;font-weight:800;color:var(--text-title);margin-bottom:12px;}
.cta-section p{font-size:16px;color:var(--text-body);margin-bottom:24px;max-width:560px;}
/* footer */
.site-footer{background:var(--bg-card);border-top:1px solid var(--border-color);padding:40px 0 24px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:32px;padding-bottom:32px;border-bottom:1px solid var(--border-color);}
.footer-brand p{font-size:14px;color:var(--text-muted);margin-top:12px;}
.footer-links h4{font-size:15px;font-weight:600;color:var(--text-title);margin-bottom:16px;}
.footer-links ul{list-style:none;display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--text-muted);}
.footer-links a:hover{color:var(--primary);}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:20px;font-size:13px;color:var(--text-muted);}
/* sticky bar */
.sticky-bar-mobile{position:fixed;bottom:0;left:0;right:0;z-index:100;background:rgba(255,255,255,0.95);backdrop-filter:blur(12px);border-top:1px solid var(--border-color);padding:12px 20px;display:flex;align-items:center;gap:16px;}
.sticky-bar-mobile .sb-text{flex:1;font-size:14px;font-weight:500;color:var(--text-body);}
.sticky-bar-desktop{position:fixed;bottom:8px;right:48px;z-index:100;background:var(--bg-card);box-shadow:0 16px 48px rgba(15,23,42,0.16);border-radius:9999px;padding:8px 12px 8px 24px;align-items:center;gap:14px;border:1px solid var(--border-color);display:none;}
/* hide desktop bar on mobile, show mobile bar */
@media (max-width:639px){
  .sticky-bar-mobile{display:flex;}
  .sticky-bar-desktop{display:none;}
}
@media (min-width:640px){
  .sticky-bar-mobile{display:none;}
  .sticky-bar-desktop{display:flex;}
  .sticky-bar-desktop{right:20px;}
}
/* responsive */
@media (max-width:1024px){
  .split-list{grid-template-columns:1fr;}
  .testimonial-grid{grid-template-columns:1fr;}
  .hot-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .section{padding:56px 0;}
  .brand-row{padding:14px 0;}
  .search-box{display:none;}
  .hero h1{font-size:36px;}
  .hero-sub{font-size:16px;}
  .hero-belt{flex-direction:column;gap:16px;align-items:stretch;text-align:center;}
  .nav-grid{overflow-x:auto;gap:4px;flex-wrap:nowrap;-webkit-overflow-scrolling:touch;}
  .nav-item{white-space:nowrap;padding:8px 14px;font-size:14px;}
  .news-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .cta-section{padding:32px 24px;}
}
@media (max-width:520px){
  .hero-belt{padding:16px 20px;}
  .hero h1{font-size:32px;}
  .rail-card{min-width:220px;}
  .footer-bottom{flex-direction:column;gap:8px;text-align:center;}
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --primary: #2563EB;
  --primary-dark: #1D4ED8;
  --primary-light: #EFF6FF;
  --bg-body: #F5F8FC;
  --bg-card: #FFFFFF;
  --text-title: #0F172A;
  --text-body: #334155;
  --text-muted: #64748B;
  --border-color: #E2E8F0;
  --radius-card: 1rem;
  --radius-btn: 9999px;
  --shadow-card: 0 4px 20px rgba(37,99,235,0.06);
  --shadow-hover: 0 12px 32px rgba(37,99,235,0.12);
}

/* ===== Reset / Base ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg-body);
  color: var(--text-body);
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, sans-serif;
  line-height: 1.6;
  padding-bottom: 80px;
}
a { color: inherit; text-decoration: none; transition: all 0.25s ease; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input { font-family: inherit; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-head { margin-bottom: 44px; }
.section-head .eyebrow {
  display: inline-block; font-size: 14px; font-weight: 600;
  color: var(--primary); background: var(--primary-light);
  padding: 6px 16px; border-radius: 9999px; margin-bottom: 12px;
}
.section-head h2 {
  font-size: 32px; font-weight: 700; color: var(--text-title);
  line-height: 1.3; letter-spacing: -0.02em; margin: 0;
}
.section-head p { margin-top: 12px; font-size: 16px; color: var(--text-muted); max-width: 680px; }

/* ===== 按钮 ===== */
.btn-primary {
  background: var(--primary); color: #fff !important;
  border-radius: 9999px; padding: 10px 24px; font-size: 14px; font-weight: 600;
  transition: all 0.25s; display: inline-flex; align-items: center; gap: 6px;
  box-shadow: 0 4px 14px rgba(37,99,235,0.25); border: none;
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37,99,235,0.3); }
.btn-primary:active { transform: scale(0.98); }
.btn-primary:focus-visible { outline: 2px solid rgba(37,99,235,0.3); outline-offset: 2px; }
.btn-outline {
  border: 1px solid var(--border-color); background: #fff; color: var(--text-body) !important;
  border-radius: 9999px; padding: 10px 24px; font-size: 14px; font-weight: 500;
  transition: all 0.25s; display: inline-flex; align-items: center; gap: 6px;
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary) !important; }
.btn-outline:active { transform: scale(0.98); }
.btn-outline:focus-visible { outline: 2px solid rgba(37,99,235,0.3); outline-offset: 2px; }

/* ===== Header ===== */
.site-header {
  background: var(--bg-card); border-bottom: 1px solid var(--border-color);
  position: sticky; top: 0; z-index: 50; box-shadow: 0 2px 12px rgba(15,23,42,0.04);
}
.brand-row { display: flex; align-items: center; justify-content: space-between; padding: 18px 0; gap: 16px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 24px; font-weight: 800; color: var(--text-title); letter-spacing: -0.02em; }
.logo-icon {
  width: 38px; height: 38px; background: linear-gradient(135deg, #2563EB, #1D4ED8);
  border-radius: 12px; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 14px rgba(37,99,235,0.3); flex-shrink: 0;
}
.logo-icon svg { width: 22px; height: 22px; stroke: #fff; fill: none; }
.header-right { display: flex; align-items: center; gap: 12px; }
.search-box {
  display: flex; align-items: center; background: #F1F5F9; border-radius: 9999px;
  padding: 4px 6px 4px 16px; border: 1px solid transparent; transition: border-color 0.2s;
}
.search-box:focus-within { border-color: var(--primary); background: #fff; }
.search-box input { background: transparent; border: none; outline: none; font-size: 14px; color: var(--text-body); width: 160px; }
.search-box button {
  background: var(--primary); border-radius: 9999px; padding: 8px 16px;
  font-size: 13px; font-weight: 500; color: #fff; transition: background 0.2s;
}
.search-box button:hover { background: var(--primary-dark); }
.nav-toggle {
  display: none; width: 42px; height: 42px; border-radius: 12px;
  border: 1px solid var(--border-color); background: #fff;
  align-items: center; justify-content: center;
}
.nav-toggle svg { width: 20px; height: 20px; stroke: var(--text-body); fill: none; }

/* ===== 导航网格 ===== */
.nav-grid { border-top: 1px solid var(--border-color); padding: 14px 0; display: flex; align-items: center; gap: 8px; }
.nav-item {
  display: flex; align-items: center; gap: 8px; padding: 8px 18px; border-radius: 12px;
  font-size: 15px; font-weight: 500; color: var(--text-muted); transition: all 0.2s;
}
.nav-item svg { width: 18px; height: 18px; stroke: currentColor; fill: none; }
.nav-item:hover { background: var(--primary-light); color: var(--primary); }
.nav-item.active {
  background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(37,99,235,0.25);
}
.nav-item.active:hover { background: var(--primary-dark); color: #fff; }

/* ===== 移动端抽屉 ===== */
.mobile-drawer {
  position: fixed; top: 0; right: -100%; width: 86%; max-width: 360px;
  height: 100vh; background: #fff; z-index: 100; transition: right 0.3s ease;
  box-shadow: -8px 0 40px rgba(15,23,42,0.12); padding: 24px; overflow-y: auto;
}
.mobile-drawer.open { right: 0; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.drawer-close {
  width: 36px; height: 36px; border-radius: 10px; border: 1px solid var(--border-color);
  display: flex; align-items: center; justify-content: center;
}
.drawer-close svg { width: 18px; height: 18px; stroke: var(--text-body); fill: none; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.drawer-nav a {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  padding: 16px 12px; border-radius: 14px; background: #F8FAFC;
  font-size: 14px; font-weight: 500; color: var(--text-body);
  border: 1px solid var(--border-color); transition: all 0.2s;
}
.drawer-nav a:hover { background: var(--primary-light); color: var(--primary); border-color: #BFDBFE; }
.drawer-nav a.active {
  background: var(--primary); color: #fff; border-color: var(--primary);
  box-shadow: 0 4px 14px rgba(37,99,235,0.25);
}
.drawer-nav a svg { width: 22px; height: 22px; stroke: currentColor; fill: none; }
.drawer-overlay {
  position: fixed; inset: 0; background: rgba(15,23,42,0.4); z-index: 99;
  opacity: 0; pointer-events: none; transition: opacity 0.3s;
}
.drawer-overlay.open { opacity: 1; pointer-events: auto; }

/* ===== 分类 Hero ===== */
.cat-hero {
  background: linear-gradient(135deg, #F8FAFC 0%, #EFF6FF 60%, #DBEAFE 100%);
  padding: 56px 0 48px; position: relative; overflow: hidden;
}
.cat-hero::before {
  content: ''; position: absolute; width: 360px; height: 360px; border-radius: 50%;
  background: rgba(59,130,246,0.08); top: -120px; right: -80px;
}
.cat-hero::after {
  content: ''; position: absolute; width: 200px; height: 200px; border-radius: 50%;
  background: rgba(59,130,246,0.06); bottom: -60px; left: 10%;
}
.breadcrumb {
  display: flex; align-items: center; gap: 8px; font-size: 14px;
  color: var(--text-muted); margin-bottom: 20px; position: relative; z-index: 2;
}
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: #CBD5E1; }
.cat-hero h1 {
  font-size: 42px; font-weight: 800; color: var(--text-title);
  letter-spacing: -0.03em; line-height: 1.2; margin: 0 0 16px;
  position: relative; z-index: 2;
}
.cat-hero h1 .accent { color: var(--primary); }
.cat-hero p {
  font-size: 17px; color: var(--text-body); max-width: 640px;
  line-height: 1.8; position: relative; z-index: 2;
}
.cat-hero-stats { display: flex; gap: 36px; margin-top: 28px; position: relative; z-index: 2; flex-wrap: wrap; }
.cat-hero-stats .stat-num { font-size: 28px; font-weight: 800; color: var(--text-title); }
.cat-hero-stats .stat-label { font-size: 14px; color: var(--text-muted); }

/* ===== 筛选条 ===== */
.filter-bar {
  display: flex; flex-wrap: wrap; gap: 10px; margin: 36px 0 40px;
  padding-top: 36px; border-top: 1px solid var(--border-color);
}
.filter-pill {
  padding: 9px 24px; border-radius: 9999px; font-size: 14px; font-weight: 500;
  color: var(--text-muted); background: #fff; border: 1px solid var(--border-color);
  transition: all 0.25s;
}
.filter-pill:hover { border-color: var(--primary); color: var(--primary); }
.filter-pill.active {
  background: var(--primary); color: #fff; border-color: var(--primary);
  box-shadow: 0 4px 14px rgba(37,99,235,0.25);
}

/* ===== 精选卡片 ===== */
.featured-card {
  background: var(--bg-card); border-radius: 20px; overflow: hidden;
  border: 1px solid var(--border-color); box-shadow: var(--shadow-card);
  transition: all 0.3s; height: 100%; display: flex; flex-direction: column;
}
.featured-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); border-color: #BFDBFE; }
.featured-cover {
  position: relative; height: 240px; background: linear-gradient(135deg, #1E3A8A, #3B82F6);
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.featured-cover::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0) 50%, rgba(15,23,42,0.35));
}
.featured-cover svg { width: 56px; height: 56px; stroke: rgba(255,255,255,0.8); fill: none; position: relative; z-index: 1; }
.featured-badge {
  position: absolute; top: 16px; left: 16px; z-index: 2;
  background: rgba(255,255,255,0.92); color: var(--primary); font-size: 13px;
  font-weight: 600; padding: 5px 14px; border-radius: 9999px; backdrop-filter: blur(4px);
}
.featured-rating {
  position: absolute; top: 16px; right: 16px; z-index: 2;
  background: rgba(245,158,11,0.92); color: #fff; font-size: 13px;
  font-weight: 700; padding: 5px 12px; border-radius: 9999px;
}
.featured-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.featured-body h3 { font-size: 22px; font-weight: 700; color: var(--text-title); margin: 0 0 10px; line-height: 1.4; }
.featured-body p { font-size: 15px; color: var(--text-muted); line-height: 1.75; margin: 0 0 18px; flex: 1; }
.featured-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.tag {
  display: inline-block; font-size: 12px; font-weight: 500; color: var(--primary);
  background: var(--primary-light); padding: 4px 12px; border-radius: 9999px;
}
.featured-meta {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 13px; color: var(--text-muted); border-top: 1px solid var(--border-color);
  padding-top: 16px; flex-wrap: wrap; gap: 8px;
}
.featured-meta a { color: var(--primary); font-weight: 600; }
.featured-meta a:hover { text-decoration: underline; }

/* ===== 侧边列表 ===== */
.side-list { display: flex; flex-direction: column; gap: 14px; height: 100%; }
.side-item {
  display: flex; gap: 16px; background: var(--bg-card); border-radius: 16px;
  padding: 14px; border: 1px solid var(--border-color); box-shadow: var(--shadow-card);
  transition: all 0.3s; align-items: center;
}
.side-item:hover { box-shadow: var(--shadow-hover); transform: translateX(4px); border-color: #BFDBFE; }
.side-thumb {
  width: 72px; height: 72px; border-radius: 12px; display: flex;
  align-items: center; justify-content: center; flex-shrink: 0;
}
.side-thumb svg { width: 26px; height: 26px; stroke: #fff; fill: none; }
.side-thumb.blue { background: linear-gradient(135deg, #3B82F6, #1D4ED8); }
.side-thumb.green { background: linear-gradient(135deg, #10B981, #059669); }
.side-thumb.amber { background: linear-gradient(135deg, #F59E0B, #D97706); }
.side-thumb.purple { background: linear-gradient(135deg, #8B5CF6, #6D28D9); }
.side-thumb.rose { background: linear-gradient(135deg, #F43F5E, #E11D48); }
.side-thumb.cyan { background: linear-gradient(135deg, #06B6D4, #0891B2); }
.side-info { flex: 1; min-width: 0; }
.side-info h4 {
  font-size: 15px; font-weight: 600; color: var(--text-title); margin: 0 0 4px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.side-info .side-desc {
  font-size: 13px; color: var(--text-muted);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin: 0;
}
.side-meta { display: flex; align-items: center; gap: 10px; margin-top: 6px; font-size: 12px; color: var(--text-muted); }
.side-meta .score { color: #F59E0B; font-weight: 700; }

/* ===== 分页器 ===== */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 48px; flex-wrap: wrap; }
.page-btn {
  min-width: 42px; height: 42px; border-radius: 12px; display: flex;
  align-items: center; justify-content: center; font-size: 14px; font-weight: 500;
  color: var(--text-muted); background: #fff; border: 1px solid var(--border-color);
  transition: all 0.2s; padding: 0 8px;
}
.page-btn:hover { border-color: var(--primary); color: var(--primary); }
.page-btn.active {
  background: var(--primary); color: #fff; border-color: var(--primary);
  box-shadow: 0 4px 14px rgba(37,99,235,0.25);
}

/* ===== FAQ ===== */
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: 16px; box-shadow: var(--shadow-card); overflow: hidden;
  transition: border-color 0.3s;
}
.faq-item:hover { border-color: #BFDBFE; }
.faq-item summary {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 24px; font-size: 16px; font-weight: 600; color: var(--text-title);
  cursor: pointer; list-style: none; transition: background 0.2s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { background: var(--primary-light); }
.faq-item summary::after {
  content: '+'; font-size: 22px; color: var(--primary); font-weight: 400;
  transition: transform 0.3s; line-height: 1;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .faq-answer { padding: 0 24px 20px; color: var(--text-muted); font-size: 15px; line-height: 1.8; }

/* ===== CTA 区 ===== */
.cta-area {
  background: linear-gradient(135deg, #EFF6FF, #DBEAFE); border-radius: 28px;
  padding: 60px 48px; text-align: center; position: relative; overflow: hidden;
}
.cta-area::before {
  content: ''; position: absolute; width: 220px; height: 220px; border-radius: 50%;
  background: rgba(37,99,235,0.08); top: -80px; right: -40px;
}
.cta-area::after {
  content: ''; position: absolute; width: 140px; height: 140px; border-radius: 50%;
  background: rgba(37,99,235,0.06); bottom: -50px; left: 20px;
}
.cta-area h2 {
  font-size: 32px; font-weight: 800; color: var(--text-title);
  margin: 0 0 12px; position: relative; z-index: 1;
}
.cta-area p {
  font-size: 16px; color: var(--text-body); max-width: 520px;
  margin: 0 auto 28px; position: relative; z-index: 1;
}
.cta-btns { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; position: relative; z-index: 1; }

/* ===== Footer ===== */
.site-footer { background: var(--bg-card); border-top: 1px solid var(--border-color); padding: 60px 0 0; margin-top: 80px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 0.8fr 0.8fr 1.2fr; gap: 40px; padding-bottom: 40px; }
.footer-brand .logo { font-size: 20px; margin-bottom: 12px; }
.footer-brand p { font-size: 14px; color: var(--text-muted); line-height: 1.7; max-width: 260px; }
.footer-links h4 { font-size: 15px; font-weight: 600; color: var(--text-title); margin: 0 0 16px; }
.footer-links ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 14px; color: var(--text-muted); transition: color 0.2s; }
.footer-links a:hover { color: var(--primary); }
.footer-links input {
  width: 100%; padding: 10px 14px; border-radius: 12px; border: 1px solid var(--border-color);
  outline: none; font-size: 14px; background: #F8FAFC; transition: border-color 0.2s;
}
.footer-links input:focus { border-color: var(--primary); background: #fff; }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 0; border-top: 1px solid var(--border-color);
  font-size: 13px; color: var(--text-muted);
}

/* ===== 固定转化条 ===== */
.sticky-cta {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 90;
  background: rgba(255,255,255,0.96); backdrop-filter: blur(10px);
  border-top: 1px solid var(--border-color); padding: 12px 20px;
  display: flex; align-items: center; justify-content: space-between;
  box-shadow: 0 -4px 24px rgba(15,23,42,0.06);
  opacity: 0; pointer-events: none; transition: opacity 0.3s;
}
.sticky-cta.visible { opacity: 1; pointer-events: auto; }
.sticky-cta .sticky-text { font-size: 14px; font-weight: 600; color: var(--text-title); }
.sticky-cta .sticky-sub { font-size: 12px; color: var(--text-muted); }
.sticky-cta-close {
  width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center;
  justify-content: center; color: var(--text-muted); background: #F1F5F9; flex-shrink: 0;
  transition: background 0.2s;
}
.sticky-cta-close:hover { background: #E2E8F0; }
.sticky-cta-close svg { width: 14px; height: 14px; }
.desktop-cta {
  display: flex; position: fixed; bottom: 24px; right: 24px; z-index: 90;
  background: #fff; border-radius: 9999px; padding: 10px 18px 10px 22px;
  box-shadow: 0 12px 40px rgba(15,23,42,0.14); border: 1px solid var(--border-color);
  align-items: center; gap: 16px; opacity: 0; pointer-events: none; transition: opacity 0.3s, transform 0.3s;
}
.desktop-cta.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
.desktop-cta .btn-primary { padding: 8px 18px; font-size: 13px; }

/* ===== 响应式 ===== */
@media (max-width: 992px) {
  .nav-grid { overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
  .nav-grid::-webkit-scrollbar { display: none; }
  .nav-item { white-space: nowrap; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .search-box { display: none; }
  .nav-toggle { display: flex; }
  .header-right .btn-primary { display: none; }
  .cat-hero h1 { font-size: 32px; }
  .cat-hero p { font-size: 15px; }
  .cat-hero-stats { gap: 20px; }
  .cat-hero-stats .stat-num { font-size: 24px; }
  .featured-cover { height: 180px; }
  .featured-body h3 { font-size: 18px; }
  .cta-area { padding: 40px 24px; }
  .cta-area h2 { font-size: 26px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .desktop-cta { display: none; }
}
@media (min-width: 769px) {
  .sticky-cta { display: none; }
  .desktop-cta { display: flex; }
}