/* roulang page: index */
:root{
  --brand:#E4572E;
  --brand-dark:#C7461F;
  --brand-light:#FDEDE7;
  --cyan:#12B39B;
  --amber:#F2B230;
  --ink:#12151A;
  --ink-soft:#1B1F24;
  --gray:#5C6670;
  --line:#E6E2DC;
  --line-soft:#DED9D2;
  --bg:#F6F4F1;
  --bg-warm:#FBF7F4;
  --card:#FFFFFF;
  --white:#FFFFFF;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(18,21,26,.04), 0 8px 24px rgba(18,21,26,.06);
  --shadow-2:0 12px 32px rgba(18,21,26,.10);
  --t:180ms ease;
  --wrap:1200px;
  --narrow:760px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-soft);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--brand-dark);}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  color:var(--ink);
  font-weight:700;
  line-height:1.35;
}
p{margin:0 0 1.4em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
hr{border:0;border-top:1px solid var(--line);margin:0;}
:focus-visible{outline:3px solid rgba(228,87,46,.35);outline-offset:2px;border-radius:4px;}
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.wrap-narrow{max-width:var(--narrow);}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.bg-white{background:var(--card);}
.bg-paper{background:var(--bg);}
.bg-ink{background:var(--ink);}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--ink);
  color:#C9CED6;
  font-size:13px;
  line-height:38px;
  height:38px;
  overflow:hidden;
}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar-left{display:flex;align-items:center;gap:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);flex:none;box-shadow:0 0 0 3px rgba(18,179,155,.18);}
.topbar-right{display:flex;align-items:center;gap:20px;flex:none;}
.topbar-right a{color:#C9CED6;font-size:13px;}
.topbar-right a:hover{color:var(--brand);}
.topbar-domain{font-family:"SFMono-Regular",Consolas,Menlo,monospace;color:#8E969F;letter-spacing:.4px;}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--card);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t);
}
.site-header.is-stuck{box-shadow:0 6px 20px rgba(18,21,26,.08);}
.nav-inner{
  height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  background:linear-gradient(135deg,var(--brand) 0%,#F07A4E 100%);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:17px;font-weight:700;
  box-shadow:0 4px 12px rgba(228,87,46,.28);
  flex:none;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.2px;}
.brand-sub{font-size:11px;color:var(--gray);letter-spacing:.6px;}
.nav-menu{display:flex;align-items:center;gap:4px;}
.nav-menu a{
  display:block;
  padding:8px 14px;
  font-size:15px;
  color:var(--ink-soft);
  border-radius:var(--radius-sm);
  position:relative;
  white-space:nowrap;
}
.nav-menu a:hover{color:var(--brand);background:var(--brand-light);}
.nav-menu a.active{color:var(--brand);font-weight:600;}
.nav-menu a.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:-2px;
  height:2px;border-radius:2px;background:var(--brand);
}
.nav-right{display:flex;align-items:center;gap:14px;flex:none;}
.nav-search{
  display:flex;align-items:center;
  height:40px;
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  padding:0 8px 0 12px;
}
.nav-search i{color:var(--gray);font-size:13px;}
.nav-search input{
  border:0;background:transparent;outline:none;
  width:130px;padding:0 8px;font-size:14px;color:var(--ink);
}
.nav-search button{
  border:0;background:var(--brand);color:#fff;
  height:28px;padding:0 12px;border-radius:7px;
  font-size:13px;font-weight:600;cursor:pointer;
  transition:background var(--t);
}
.nav-search button:hover{background:var(--brand-dark);}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  background:var(--card);
  border-radius:var(--radius-sm);
  cursor:pointer;
  color:var(--ink);
  font-size:17px;
  align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* 抽屉 */
.drawer{
  display:none;
  border-top:1px solid var(--line);
  background:var(--card);
  padding:8px 0 20px;
}
.drawer.is-open{display:block;animation:drawerIn 200ms ease;}
@keyframes drawerIn{from{opacity:0;transform:translateY(-6px);}to{opacity:1;transform:translateY(0);}}
.drawer a{
  display:flex;align-items:center;justify-content:space-between;
  height:48px;padding:0 24px;
  font-size:16px;color:var(--ink-soft);
  border-bottom:1px solid var(--line);
}
.drawer a:hover,.drawer a.active{color:var(--brand);background:var(--brand-light);}
.drawer-cta{padding:18px 24px 0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(228,87,46,.24);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(228,87,46,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 10px rgba(228,87,46,.22);}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-light{background:#fff;color:var(--brand);}
.btn-light:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-2px);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn-outline-light:hover{background:rgba(255,255,255,.10);color:#fff;transform:translateY(-2px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:5px;
  height:24px;padding:0 11px;
  border-radius:var(--radius-pill);
  font-size:13px;line-height:1;font-weight:500;
  white-space:nowrap;
}
.badge-cat{background:var(--brand-light);color:var(--brand-dark);}
.badge-hot{background:var(--amber);color:var(--ink);font-weight:600;}
.badge-state{background:var(--cyan);color:#fff;}
.badge-line{background:transparent;border:1px solid var(--line);color:var(--gray);}

/* ---------- 板块标题 ---------- */
.sec-head{margin-bottom:34px;}
.sec-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--cyan);font-weight:600;letter-spacing:1px;
  margin-bottom:10px;
}
.sec-kicker::before{content:"";width:20px;height:4px;border-radius:2px;background:var(--brand);}
.sec-title{font-size:clamp(22px,2.4vw,30px);position:relative;padding-bottom:2px;}
.sec-desc{margin-top:12px;font-size:16px;color:var(--gray);max-width:720px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background:
    radial-gradient(circle at 12% 18%, rgba(228,87,46,.10) 0%, rgba(228,87,46,0) 42%),
    radial-gradient(circle at 88% 82%, rgba(18,179,155,.10) 0%, rgba(18,179,155,0) 46%),
    var(--bg);
  overflow:hidden;
  padding:80px 0 88px;
}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(18,21,26,.16) 1px, transparent 1px);
  background-size:26px 26px;
  opacity:.04;
  pointer-events:none;
}
.hero .wrap{position:relative;z-index:1;}
.hero-copy{padding-right:20px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:var(--radius-pill);
  background:var(--card);border:1px solid var(--line);
  font-size:13px;color:var(--gray);margin-bottom:22px;
}
.hero-eyebrow .pulse{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 3px rgba(18,179,155,.18);}
.hero h1{
  font-size:clamp(28px,4vw,44px);
  font-weight:700;line-height:1.3;
  letter-spacing:-.4px;
  margin-bottom:20px;
}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-sub{
  font-size:18px;line-height:1.8;color:var(--gray);
  max-width:560px;margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:36px;
  padding-top:26px;border-top:1px solid var(--line);
}
.stat-num{
  font-family:"SFMono-Regular",Consolas,Menlo,monospace;
  font-size:26px;font-weight:700;color:var(--ink);line-height:1.2;
}
.stat-num span{font-size:15px;color:var(--brand);margin-left:2px;}
.stat-label{font-size:13px;color:var(--gray);margin-top:4px;}
.hero-visual{position:relative;}
.hero-figure{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  min-height:420px;
  box-shadow:var(--shadow-1);
}
.hero-figure img{width:100%;height:100%;min-height:420px;object-fit:cover;}
.hero-figure::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(18,21,26,.10) 0%,rgba(18,21,26,.42) 100%);
}
.hero-figure-tag{
  position:absolute;left:20px;bottom:20px;z-index:2;
  display:flex;align-items:center;gap:10px;
  background:rgba(255,255,255,.94);
  border-radius:var(--radius-pill);
  padding:8px 16px 8px 10px;
  font-size:14px;color:var(--ink);font-weight:600;
  box-shadow:0 8px 24px rgba(18,21,26,.16);
}
.hero-figure-tag i{
  width:26px;height:26px;border-radius:50%;
  background:var(--brand-light);color:var(--brand-dark);
  display:flex;align-items:center;justify-content:center;font-size:12px;
}

/* ---------- 合集目录 ---------- */
.dir-grid{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-1);
}
.dir-item{
  display:flex;align-items:center;gap:20px;
  padding:24px 26px;
  border-bottom:1px solid var(--line);
  transition:background var(--t),transform var(--t);
}
.dir-item:last-child{border-bottom:0;}
.dir-item:hover{background:var(--brand-light);transform:translateX(4px);}
.dir-index{
  font-family:"SFMono-Regular",Consolas,Menlo,monospace;
  font-size:15px;font-weight:700;color:var(--brand);
  width:38px;height:38px;flex:none;
  border-radius:12px;background:var(--brand-light);
  display:flex;align-items:center;justify-content:center;
}
.dir-body{flex:1;min-width:0;}
.dir-name{font-size:18px;font-weight:600;color:var(--ink);margin-bottom:4px;}
.dir-item:hover .dir-name{color:var(--brand-dark);}
.dir-meta{font-size:14px;color:var(--gray);}
.dir-arrow{color:var(--brand);font-size:14px;flex:none;transition:transform var(--t);}
.dir-item:hover .dir-arrow{transform:translateX(4px);}

/* ---------- 精选 ---------- */
.feat-main{
  display:block;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  height:100%;
}
.feat-main:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(228,87,46,.3);}
.feat-main-img{position:relative;aspect-ratio:16/9;background:#EEE9E3;overflow:hidden;}
.feat-main-img img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease;}
.feat-main:hover .feat-main-img img{transform:scale(1.03);}
.feat-main-img .badge{position:absolute;left:16px;top:16px;}
.feat-main-body{padding:24px 26px 26px;}
.feat-main-body h3{font-size:22px;margin-bottom:12px;line-height:1.4;}
.feat-main:hover h3{color:var(--brand-dark);}
.feat-main-body p{font-size:15px;color:var(--gray);margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.feat-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--gray);flex-wrap:wrap;}

.mini-list{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  height:100%;
  box-shadow:var(--shadow-1);
}
.mini-item{
  display:block;
  padding:20px 22px;
  border-bottom:1px solid var(--line);
  transition:background var(--t);
}
.mini-item:last-child{border-bottom:0;}
.mini-item:hover{background:var(--bg-warm);}
.mini-item .badge{margin-bottom:10px;}
.mini-title{
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.5;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.mini-item:hover .mini-title{color:var(--brand-dark);}
.mini-time{font-size:13px;color:var(--gray);font-family:"SFMono-Regular",Consolas,Menlo,monospace;}

/* ---------- 最新信息列表 ---------- */
.post-list{display:flex;flex-direction:column;gap:18px;}
.post-card{
  display:flex;
  gap:22px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:18px;
  box-shadow:var(--shadow-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(228,87,46,.3);}
.post-thumb{
  flex:0 0 200px;width:200px;
  aspect-ratio:16/9;
  border-radius:12px;overflow:hidden;background:#EEE9E3;
}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease;}
.post-card:hover .post-thumb img{transform:scale(1.04);}
.post-body{flex:1;min-width:0;display:flex;flex-direction:column;justify-content:center;}
.post-title{
  font-size:19px;font-weight:600;color:var(--ink);line-height:1.5;margin:10px 0 8px;
}
.post-card:hover .post-title{color:var(--brand-dark);}
.post-excerpt{
  font-size:15px;color:var(--gray);line-height:1.8;margin:0 0 14px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--gray);}
.post-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line-soft);}
.post-more{color:var(--brand);font-weight:600;}
.list-foot{text-align:center;margin-top:36px;}
.link-more{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--brand);
  border-bottom:1px solid transparent;padding-bottom:2px;
  transition:border-color var(--t),color var(--t);
}
.link-more:hover{color:var(--brand-dark);border-color:var(--brand-dark);}
.empty-state{
  text-align:center;
  padding:64px 24px;
  background:var(--card);
  border:1px dashed var(--line-soft);
  border-radius:var(--radius-lg);
}
.empty-icon{
  width:56px;height:56px;margin:0 auto 18px;
  border-radius:18px;background:var(--brand-light);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:22px;
}
.empty-state h3{font-size:18px;margin-bottom:8px;}
.empty-state p{color:var(--gray);font-size:15px;margin-bottom:22px;}

/* ---------- 横向滚动推荐 ---------- */
.rail-wrap{position:relative;}
.rail{
  display:flex;gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:6px 4px 20px;
  scrollbar-width:thin;
  scrollbar-color:var(--line-soft) transparent;
}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-track{background:transparent;}
.rail::-webkit-scrollbar-thumb{background:var(--line-soft);border-radius:3px;}
.rail-card{
  flex:0 0 292px;
  scroll-snap-align:start;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  display:flex;flex-direction:column;
}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(228,87,46,.3);}
.rail-thumb{position:relative;aspect-ratio:16/9;background:#EEE9E3;overflow:hidden;}
.rail-thumb img{width:100%;height:100%;object-fit:cover;}
.rail-thumb .badge{position:absolute;left:12px;top:12px;}
.rail-body{padding:16px 18px 18px;flex:1;display:flex;flex-direction:column;}
.rail-title{
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rail-card:hover .rail-title{color:var(--brand-dark);}
.rail-desc{
  font-size:14px;color:var(--gray);line-height:1.75;margin:0 0 14px;flex:1;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rail-meta{font-size:13px;color:var(--gray);font-family:"SFMono-Regular",Consolas,Menlo,monospace;}

/* ---------- 深色 CTA ---------- */
.cta-band{
  background:var(--ink);
  border-radius:var(--radius-lg);
  padding:52px 48px;
  position:relative;
  overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  flex-wrap:wrap;
}
.cta-band::before{
  content:"";
  position:absolute;right:-60px;top:-60px;
  width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(228,87,46,.32) 0%,rgba(228,87,46,0) 70%);
}
.cta-band::after{
  content:"";
  position:absolute;left:-40px;bottom:-80px;
  width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,179,155,.24) 0%,rgba(18,179,155,0) 70%);
}
.cta-copy{position:relative;z-index:1;max-width:620px;}
.cta-copy h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:12px;}
.cta-copy p{color:#A9B0B9;font-size:16px;margin:0;}
.cta-actions{position:relative;z-index:1;display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t);
}
.faq-item:hover{border-color:rgba(228,87,46,.3);}
.faq-item[open]{box-shadow:var(--shadow-1);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:20px 22px;
  font-size:17px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  transition:box-shadow var(--t),color var(--t);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-dark);}
.faq-item[open] summary{box-shadow:inset 3px 0 0 var(--brand);color:var(--brand-dark);}
.faq-item summary::after{
  content:"";
  width:10px;height:10px;flex:none;
  border-right:2px solid var(--brand);
  border-bottom:2px solid var(--brand);
  transform:rotate(45deg);
  margin-top:-5px;
  transition:transform 200ms ease;
}
.faq-item[open] summary::after{transform:rotate(-135deg);margin-top:5px;}
.faq-answer{padding:0 22px 22px;font-size:15px;line-height:1.8;color:var(--gray);}
.faq-answer p{margin:0;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#A9B0B9;padding:72px 0 0;margin-top:0;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand-name{font-size:17px;font-weight:700;color:#fff;}
.footer-desc{font-size:14px;line-height:1.9;color:#A9B0B9;margin-bottom:14px;max-width:300px;}
.footer-domain{
  font-family:"SFMono-Regular",Consolas,Menlo,monospace;
  font-size:13px;color:#7C848D;letter-spacing:.4px;
}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:#A9B0B9;display:inline-block;transition:color var(--t),transform var(--t);}
.footer-col a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{
  margin-top:56px;
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7C848D;
}
.footer-bottom-links{display:flex;gap:20px;flex-wrap:wrap;}
.footer-bottom-links a{color:#7C848D;}
.footer-bottom-links a:hover{color:var(--brand);}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1280px){
  .nav-search input{width:96px;}
}
@media screen and (max-width:1024px){
  .nav-menu{display:none;}
  .nav-toggle{display:flex;}
  .nav-search{display:none;}
  .section{padding:72px 0;}
  .hero{padding:64px 0 72px;}
  .hero-copy{padding-right:0;margin-bottom:40px;}
  .hero-figure,.hero-figure img{min-height:320px;}
  .cta-band{padding:40px 32px;}
}
@media screen and (max-width:768px){
  .wrap{padding-left:16px;padding-right:16px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .hero{padding:48px 0 56px;}
  .hero-sub{font-size:16px;}
  .hero-stats{gap:24px;}
  .stat-num{font-size:22px;}
  .hero-actions{gap:10px;}
  .btn{height:44px;padding:0 20px;font-size:14px;}
  .post-card{flex-direction:column;gap:16px;}
  .post-thumb{flex:none;width:100%;}
  .rail-card{flex:0 0 78%;}
  .cta-band{flex-direction:column;align-items:flex-start;gap:26px;padding:34px 24px;}
  .site-footer{padding:52px 0 0;}
  .footer-col{margin-bottom:30px;}
  .footer-desc{max-width:100%;}
  .faq-item summary{font-size:16px;padding:18px;}
  .faq-answer{padding:0 18px 18px;}
  .topbar-right a:nth-child(2){display:none;}
}
@media screen and (max-width:520px){
  .topbar{font-size:12px;}
  .topbar-right{gap:12px;}
  .hero h1{font-size:26px;}
  .hero-figure,.hero-figure img{min-height:220px;}
  .dir-item{padding:18px;}
  .dir-index{width:32px;height:32px;font-size:13px;}
  .dir-name{font-size:16px;}
  .hero-stats{gap:18px;}
  .brand-sub{display:none;}
}

/* roulang page: article */
:root{
  --brand:#E4572E;
  --brand-dark:#C7461F;
  --brand-soft:#FDEDE7;
  --teal:#12B39B;
  --amber:#F2B230;
  --ink:#12151A;
  --graphite:#1B1F24;
  --mid:#5C6670;
  --line:#E6E2DC;
  --line-soft:#DED9D2;
  --paper:#F6F4F1;
  --paper-hover:#FBF7F4;
  --white:#FFFFFF;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:10px;
  --shadow-1:0 1px 2px rgba(18,21,26,.04),0 8px 24px rgba(18,21,26,.06);
  --shadow-2:0 12px 32px rgba(18,21,26,.10);
  --wrap:1200px;
  --narrow:760px;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--graphite);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,transform .18s ease;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(228,87,46,.35);outline-offset:2px;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px;width:100%;}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink);color:#C9CED6;font-size:13px;height:38px;display:flex;align-items:center;}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:38px;}
.topbar-tip{display:flex;align-items:center;gap:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-dot{width:7px;height:7px;border-radius:999px;background:var(--teal);flex:0 0 auto;box-shadow:0 0 0 3px rgba(18,179,155,.18);}
.topbar-links{display:flex;align-items:center;gap:18px;flex:0 0 auto;}
.topbar-links a{color:#C9CED6;font-size:13px;}
.topbar-links a:hover{color:var(--brand);}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--white);border-bottom:1px solid var(--line);transition:box-shadow .2s ease;}
.site-header.is-stuck{box-shadow:0 6px 20px rgba(18,21,26,.08);}
.nav-bar{height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;flex:0 0 auto;
  display:grid;place-items:center;color:#fff;font-weight:700;font-size:18px;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  box-shadow:0 6px 16px rgba(228,87,46,.28);
}
.brand-name{font-size:18px;font-weight:700;color:var(--graphite);letter-spacing:.2px;}
.nav-menu{display:flex;align-items:center;gap:2px;}
.nav-menu a{
  position:relative;display:block;padding:10px 13px;font-size:15px;color:var(--mid);border-radius:8px;
}
.nav-menu a:hover{color:var(--brand);background:var(--brand-soft);}
.nav-menu a.active{color:var(--brand);font-weight:600;}
.nav-menu a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;background:var(--brand);
}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;
  border:1px solid var(--line-soft);border-radius:var(--radius-sm);background:var(--paper);color:var(--mid);
}
.nav-search input{border:0;background:transparent;outline:none;font-size:14px;width:132px;color:var(--graphite);}
.nav-search input::placeholder{color:#9AA2AC;}
.nav-search i{color:var(--mid);font-size:14px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(228,87,46,.24);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--brand);border:1px solid var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:var(--radius-sm);border:1px solid var(--line);color:var(--graphite);font-size:18px;align-items:center;justify-content:center;}

/* ---------- 抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(18,21,26,.45);opacity:0;visibility:hidden;transition:opacity .2s ease;z-index:70;}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);background:var(--white);z-index:80;
  transform:translateX(100%);transition:transform .2s ease;display:flex;flex-direction:column;
  box-shadow:-12px 0 32px rgba(18,21,26,.16);
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line);}
.drawer-title{font-weight:700;font-size:16px;}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);display:grid;place-items:center;font-size:16px;color:var(--mid);}
.drawer-nav{padding:8px 0;flex:1;overflow:auto;}
.drawer-nav a{display:flex;align-items:center;justify-content:space-between;height:48px;padding:0 20px;font-size:15px;color:var(--graphite);border-bottom:1px solid var(--line);}
.drawer-nav a i{color:#B6BDC6;font-size:13px;}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--brand);background:var(--brand-soft);}
.drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line);}
.drawer-foot .btn{width:100%;}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--white);border-bottom:1px solid var(--line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:13.5px;color:var(--mid);}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:#BFC6CE;}
.crumb a{color:var(--mid);}
.crumb a:hover{color:var(--brand);}
.crumb li[aria-current]{color:var(--graphite);font-weight:600;}
.crumb li[aria-current] span{max-width:46vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头 ---------- */
.article-head{
  position:relative;padding:56px 0 40px;background:var(--white);border-bottom:1px solid var(--line);overflow:hidden;
}
.article-head::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(18,21,26,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(18,21,26,.04) 1px,transparent 1px);
  background-size:28px 28px;opacity:.5;
}
.article-head .wrap{position:relative;z-index:1;}
.article-head-inner{max-width:840px;}
.kicker{
  display:inline-flex;align-items:center;gap:8px;height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-dark);font-size:13px;font-weight:600;margin-bottom:18px;
}
.article-title{
  font-size:clamp(28px,4vw,44px);font-weight:700;line-height:1.3;color:var(--graphite);letter-spacing:.2px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px;margin-top:22px;font-size:13.5px;color:var(--mid);}
.meta-item{display:inline-flex;align-items:center;gap:7px;}
.meta-item i{color:var(--brand);font-size:13px;}
.badge-cat{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-dark);font-size:13px;font-weight:600;
}
.badge-hot{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  background:var(--amber);color:var(--ink);font-size:13px;font-weight:600;
}

/* ---------- 正文 ---------- */
.article-main{padding:56px 0 84px;}
.article-layout{display:flex;gap:40px;align-items:flex-start;}
.article-content{flex:1 1 auto;min-width:0;max-width:var(--narrow);margin:0 auto;}
.article-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:40px 44px;box-shadow:var(--shadow-1);
}
.article-body{font-size:17px;line-height:1.85;color:var(--graphite);}
.article-body>p:first-child{font-size:17.5px;color:var(--graphite);}
.article-body h2{
  font-size:26px;font-weight:700;line-height:1.35;margin:2.1em 0 .85em;padding-left:14px;border-left:4px solid var(--brand);
}
.article-body h3{font-size:20px;font-weight:600;line-height:1.4;margin:1.7em 0 .6em;}
.article-body h2:first-child,.article-body h3:first-child{margin-top:0;}
.article-body p{margin:0 0 1.4em;}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:1.3em;}
.article-body ul li{list-style:none;position:relative;margin-bottom:.6em;padding-left:18px;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--teal);
}
.article-body ol{list-style:decimal;}
.article-body ol li{margin-bottom:.6em;}
.article-body blockquote{
  margin:0 0 1.4em;padding:18px 22px;border-left:4px solid var(--brand);
  background:var(--brand-soft);border-radius:0 14px 14px 0;color:var(--mid);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--radius);margin:1.6em auto;max-width:100%;height:auto;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption,.article-body em{display:block;font-size:13px;color:var(--mid);text-align:center;margin-top:-8px;font-style:normal;}
.article-body a{color:var(--brand-dark);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand);}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 1.5em;font-size:15px;border-radius:12px;overflow:hidden;}
.article-body thead th{background:var(--paper);color:var(--graphite);font-weight:600;}
.article-body th,.article-body td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);}
.article-body tbody tr:nth-child(even){background:var(--paper-hover);}
.article-body code{font-family:var(--mono);font-size:14px;background:var(--paper);padding:2px 6px;border-radius:6px;}
.article-body strong{font-weight:700;color:var(--ink);}

/* ---------- 空态 ---------- */
.article-empty{
  background:var(--white);border:1px dashed var(--line-soft);border-radius:var(--radius-lg);
  padding:64px 32px;text-align:center;box-shadow:var(--shadow-1);
}
.article-empty .ico{
  width:62px;height:62px;border-radius:18px;margin:0 auto 20px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);font-size:24px;
}
.article-empty h2{font-size:22px;font-weight:700;margin-bottom:10px;}
.article-empty p{color:var(--mid);font-size:15px;margin-bottom:26px;}

/* ---------- 标签 & 分享 ---------- */
.article-foot{margin-top:32px;}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding-bottom:24px;border-bottom:1px solid var(--line);}
.tag-row .tag-label{font-size:13.5px;color:var(--mid);margin-right:2px;}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;font-size:13.5px;
  background:var(--paper);border:1px solid var(--line);color:var(--mid);
}
.tag:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}
.share-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding-top:22px;}
.share-label{font-size:14px;color:var(--mid);display:flex;align-items:center;gap:8px;}
.share-label i{color:var(--brand);}
.share-btns{display:flex;flex-wrap:wrap;gap:10px;}
.share-btn{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);background:var(--white);font-size:13.5px;color:var(--graphite);
}
.share-btn:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);transform:translateY(-2px);}

/* ---------- 相关推荐 ---------- */
.related{padding:80px 0;background:var(--white);border-top:1px solid var(--line);}
.section-head{margin-bottom:34px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--teal);margin-bottom:10px;
}
.section-head h2{font-size:clamp(24px,3vw,30px);font-weight:700;line-height:1.35;display:flex;align-items:center;gap:12px;}
.section-head h2::before{content:"";width:4px;height:20px;border-radius:2px;background:var(--brand);flex:0 0 auto;}
.section-head p{margin-top:10px;color:var(--mid);font-size:15px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(228,87,46,.3);}
.card-thumb{aspect-ratio:16/9;background:#EEE9E3;overflow:hidden;}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.card:hover .card-thumb img{transform:scale(1.04);}
.card-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-title{font-size:17px;font-weight:600;line-height:1.5;color:var(--graphite);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card:hover .card-title{color:var(--brand-dark);}
.card-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--mid);margin-top:auto;}

/* ---------- 返回入口 ---------- */
.back-zone{padding:64px 0 84px;background:var(--paper);}
.back-box{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:34px 36px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  box-shadow:var(--shadow-1);
}
.back-box h3{font-size:19px;font-weight:700;margin-bottom:6px;}
.back-box p{font-size:14px;color:var(--mid);}
.back-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#A9B0B9;padding:72px 0 0;}
.footer-col{margin-bottom:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:10px;font-size:16px;}
.footer-brand-name{color:#fff;font-size:17px;font-weight:700;}
.footer-desc{font-size:14px;line-height:1.8;color:#A9B0B9;margin-bottom:14px;}
.footer-domain{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(255,255,255,.06);color:#C9CED6;font-size:13px;font-family:var(--mono);
}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.site-footer ul li{margin-bottom:11px;}
.site-footer ul li a{font-size:14px;color:#A9B0B9;display:inline-block;}
.site-footer ul li a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{
  margin-top:24px;padding:22px 0;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;font-size:13.5px;color:#8D949D;
}
.footer-bottom-links{display:flex;flex-wrap:wrap;gap:20px;}
.footer-bottom-links a{color:#8D949D;}
.footer-bottom-links a:hover{color:var(--brand);}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1024px){
  .nav-menu{display:none;}
  .nav-search{display:none;}
  .nav-toggle{display:flex;}
  .article-card{padding:32px 30px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media screen and (max-width:768px){
  .wrap{padding:0 16px;}
  .topbar-tip span.topbar-long{display:none;}
  .topbar-links a:nth-child(2){display:none;}
  .article-head{padding:40px 0 32px;}
  .article-main{padding:40px 0 56px;}
  .article-card{padding:26px 20px;border-radius:var(--radius);}
  .article-body{font-size:16px;line-height:1.8;}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:18px;}
  .related{padding:56px 0;}
  .card-grid{grid-template-columns:1fr;gap:18px;}
  .back-zone{padding:48px 0 64px;}
  .back-box{padding:26px 22px;}
  .back-actions .btn{flex:1 1 100%;}
  .site-footer{padding-top:56px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media screen and (max-width:520px){
  .brand-name{font-size:16px;}
  .article-meta{gap:10px 14px;}
  .crumb li[aria-current] span{max-width:38vw;}
  .share-row{flex-direction:column;align-items:flex-start;}
  .share-btns{width:100%;}
  .share-btn{flex:1 1 calc(50% - 5px);justify-content:center;}
}

/* roulang page: category1 */
:root{
  --brand:#E4572E;
  --brand-dark:#C7461F;
  --brand-soft:#FDEDE7;
  --teal:#12B39B;
  --amber:#F2B230;
  --ink:#12151A;
  --ink-soft:#1B1F24;
  --gray:#5C6670;
  --line:#E6E2DC;
  --paper:#F6F4F1;
  --white:#FFFFFF;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:10px;
  --shadow-1:0 1px 2px rgba(18,21,26,.04),0 8px 24px rgba(18,21,26,.06);
  --shadow-2:0 12px 32px rgba(18,21,26,.10);
  --wrap:1200px;
  --narrow:760px;
  --gap:24px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-soft);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:3px solid rgba(228,87,46,.35);outline-offset:2px;border-radius:6px;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.35;}
p{margin:0 0 1.4em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;font-family:inherit;
  border:1px solid transparent;cursor:pointer;transition:all .18s ease;white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand-dark);}
.btn-ghost:hover{background:var(--brand-soft);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  font-size:13px;line-height:1;font-weight:500;
}
.badge-cat{background:var(--brand-soft);color:var(--brand-dark);}
.badge-pick{background:var(--amber);color:var(--ink);}
.badge-state{background:var(--teal);color:#fff;}

/* 顶部信息条 */
.site-header{position:sticky;top:0;z-index:60;background:var(--white);}
.topbar{background:var(--ink);color:#C9CED6;font-size:13px;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;min-height:38px;gap:16px;}
.topbar-note{margin:0;line-height:1.5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-links{display:flex;align-items:center;gap:18px;flex-shrink:0;}
.topbar-links a{color:#C9CED6;transition:color .18s ease;}
.topbar-links a:hover{color:#fff;}
.topbar-domain{font-family:var(--font-mono);letter-spacing:.4px;color:#8E97A3;}

/* 主导航 */
.nav-bar{border-bottom:1px solid var(--line);transition:box-shadow .2s ease;}
.nav-bar.is-stuck{box-shadow:0 6px 20px rgba(18,21,26,.08);}
.nav-inner{display:flex;align-items:center;gap:24px;min-height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;
}
.brand-name{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.2px;}
.nav-menu{display:flex;align-items:center;gap:26px;margin-left:12px;flex:1;}
.nav-menu a{
  position:relative;font-size:15px;color:var(--gray);padding:22px 0;
  transition:color .18s ease;
}
.nav-menu a:hover{color:var(--brand);}
.nav-menu a.active{color:var(--brand-dark);font-weight:600;}
.nav-menu a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;background:var(--brand);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-search{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:var(--radius-sm);
  border:1px solid var(--line);color:var(--gray);font-size:14px;background:var(--paper);
  transition:all .18s ease;
}
.nav-search:hover{border-color:var(--brand);color:var(--brand-dark);background:var(--brand-soft);}
.nav-toggle{
  display:none;width:44px;height:40px;border-radius:var(--radius-sm);border:1px solid var(--line);
  background:var(--white);color:var(--ink);font-size:14px;font-family:inherit;cursor:pointer;
}

/* 抽屉 */
.drawer-menu{display:none;border-top:1px solid var(--line);background:var(--white);}
.drawer-menu.open{display:block;}
.drawer-menu a{
  display:block;padding:0 24px;line-height:48px;font-size:15px;color:var(--gray);
  border-bottom:1px solid var(--line);
}
.drawer-menu a.active{color:var(--brand-dark);font-weight:600;background:var(--brand-soft);}
.drawer-cta{padding:16px 24px 24px;}

/* 通用板块 */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-white{background:var(--white);}
.section-head{margin-bottom:32px;}
.section-head h2{font-size:clamp(22px,2.6vw,30px);}
.section-head p{margin:8px 0 0;color:var(--gray);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--brand-dark);letter-spacing:.5px;margin-bottom:12px;
}
.eyebrow::before{content:"";width:20px;height:4px;border-radius:2px;background:var(--brand);}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--gap);}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);}

/* 分类 Hero */
.cat-hero{
  background:
    radial-gradient(circle at 88% 12%,rgba(18,179,155,.10),transparent 45%),
    linear-gradient(180deg,#FFFFFF 0%,var(--brand-soft) 100%);
  border-bottom:1px solid var(--line);
  padding:56px 0 48px;
  position:relative;
  overflow:hidden;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.04;
  background-image:linear-gradient(var(--ink) 1px,transparent 1px),linear-gradient(90deg,var(--ink) 1px,transparent 1px);
  background-size:28px 28px;
}
.cat-hero .wrap{position:relative;z-index:1;}
.crumb{font-size:13px;color:var(--gray);margin-bottom:18px;}
.crumb ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:0;padding:0;list-style:none;}
.crumb a{color:var(--gray);}
.crumb a:hover{color:var(--brand-dark);}
.crumb li[aria-current]{color:var(--ink);font-weight:600;}
.crumb li+li::before{content:"/";margin-right:8px;color:#B9BFC7;}
.cat-hero h1{font-size:clamp(28px,4vw,44px);line-height:1.3;max-width:900px;}
.cat-hero .lead{
  margin:18px 0 0;max-width:720px;font-size:17px;color:var(--gray);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:32px;margin-top:34px;padding-top:26px;border-top:1px solid rgba(18,21,26,.08);}
.fact b{display:block;font-family:var(--font-mono);font-size:22px;color:var(--ink);line-height:1.3;}
.fact span{font-size:13px;color:var(--gray);}

/* 锚点横条 */
.anchor-bar{
  background:var(--white);border-bottom:1px solid var(--line);
}
.anchor-bar .wrap{display:flex;align-items:center;gap:10px;overflow-x:auto;padding-top:14px;padding-bottom:14px;}
.anchor-bar a{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);font-size:14px;color:var(--gray);white-space:nowrap;transition:all .18s ease;
}
.anchor-bar a:hover{border-color:var(--brand);color:var(--brand-dark);background:var(--brand-soft);}

/* 卡片 */
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  height:100%;display:flex;flex-direction:column;overflow:hidden;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(228,87,46,.3);}
.card-media{position:relative;aspect-ratio:16/9;background:#EEE9E3;overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:19px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-body p{
  margin:0;font-size:15px;line-height:1.8;color:var(--gray);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--gray);margin-top:auto;padding-top:6px;}
.card-meta .dot{width:6px;height:6px;border-radius:50%;background:var(--teal);}

/* 卖点 */
.point{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow-1);height:100%;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.point:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(228,87,46,.3);}
.point .num{
  font-family:var(--font-mono);font-size:13px;font-weight:600;color:var(--brand-dark);
  background:var(--brand-soft);display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  margin-bottom:14px;
}
.point h3{font-size:20px;margin-bottom:10px;}
.point p{margin:0;color:var(--gray);font-size:15px;}

/* 场景列表 */
.scene-list{border-top:1px solid var(--line);}
.scene-list li{
  display:flex;gap:18px;align-items:flex-start;padding:20px 4px;border-bottom:1px solid var(--line);
  transition:background .18s ease;
}
.scene-list li:hover{background:#FBF7F4;}
.scene-idx{
  font-family:var(--font-mono);font-size:14px;color:var(--teal);font-weight:600;
  min-width:34px;padding-top:2px;
}
.scene-list h3{font-size:17px;font-weight:600;margin-bottom:4px;}
.scene-list p{margin:0;font-size:15px;color:var(--gray);}

/* 流程 */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);counter-reset:flow;}
.flow-item{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;position:relative;box-shadow:var(--shadow-1);
}
.flow-item::before{
  counter-increment:flow;content:"0" counter(flow);
  font-family:var(--font-mono);font-size:13px;font-weight:600;color:#fff;background:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;height:26px;padding:0 10px;border-radius:999px;
  margin-bottom:14px;
}
.flow-item h3{font-size:18px;margin-bottom:8px;}
.flow-item p{margin:0;font-size:15px;color:var(--gray);}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:340px 1fr;gap:48px;align-items:start;}
.faq-list{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-1);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:none;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px;font-size:17px;font-weight:600;color:var(--ink);transition:background .18s ease;
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:#FBF7F4;}
.faq-item summary::after{
  content:"";width:10px;height:10px;border-right:2px solid var(--brand);
  border-bottom:2px solid var(--brand);transform:rotate(45deg);flex-shrink:0;
  transition:transform .2s ease;margin-right:4px;
}
.faq-item[open] summary::after{transform:rotate(-135deg);}
.faq-item[open] summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;background:var(--brand);border-radius:0 3px 3px 0;
}
.faq-answer{padding:0 20px 22px 20px;font-size:15px;line-height:1.85;color:var(--gray);}

/* 相关分类 */
.rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);}
.rel-card{
  display:block;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-1);transition:all .18s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(228,87,46,.3);}
.rel-card span{font-family:var(--font-mono);font-size:13px;color:var(--teal);font-weight:600;}
.rel-card h3{font-size:18px;margin:10px 0 8px;}
.rel-card p{margin:0;font-size:14px;color:var(--gray);line-height:1.7;}

/* CTA 深色条 */
.cta-band{background:var(--ink);color:#D6DAE0;padding:56px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{color:#fff;font-size:clamp(20px,2.4vw,28px);}
.cta-inner p{margin:10px 0 0;color:#A9B0B9;font-size:15px;max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.5);color:#fff;}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12);}

/* 页脚 */
.site-footer{background:var(--ink);color:#A9B0B9;padding:64px 0 0;font-size:14px;}
.site-footer .footer-col{margin-bottom:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--brand);}
.footer-brand-name{color:#fff;font-size:16px;font-weight:700;}
.footer-desc{font-size:14px;line-height:1.8;color:#A9B0B9;margin-bottom:14px;}
.footer-domain{font-family:var(--font-mono);font-size:13px;color:#7E8794;letter-spacing:.4px;}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.site-footer ul li{margin-bottom:11px;}
.site-footer ul li a{color:#A9B0B9;transition:all .18s ease;display:inline-block;}
.site-footer ul li a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);margin-top:24px;padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#8E97A3;
}
.footer-bottom-links{display:flex;gap:20px;flex-wrap:wrap;}
.footer-bottom-links a{color:#8E97A3;}
.footer-bottom-links a:hover{color:var(--brand);}

@media screen and (max-width:1024px){
  .nav-menu{gap:18px;}
  .nav-menu a{font-size:14px;}
  .section{padding:72px 0;}
  .faq-grid{grid-template-columns:1fr;gap:28px;}
  .flow{grid-template-columns:repeat(2,1fr);}
  .grid-4,.rel-grid{grid-template-columns:repeat(2,1fr);}
}
@media screen and (max-width:768px){
  .topbar-links a:not(:first-child){display:none;}
  .nav-menu,.nav-search{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-inner{justify-content:space-between;gap:12px;}
  .nav-actions .btn{display:none;}
  .section{padding:56px 0;}
  .grid-2,.grid-3,.grid-4,.rel-grid,.flow{grid-template-columns:1fr;}
  .hero-facts{gap:22px;}
  .cat-hero{padding:40px 0 36px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media screen and (max-width:520px){
  .wrap{padding:0 16px;}
  .brand-name{font-size:15px;}
  .card-body h3{font-size:17px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category2 */
:root{
  --brand:#E4572E;
  --brand-dark:#C7461F;
  --brand-soft:#FDEDE7;
  --teal:#12B39B;
  --amber:#F2B230;
  --ink:#12151A;
  --graphite:#1B1F24;
  --muted:#5C6670;
  --line:#E6E2DC;
  --paper:#F6F4F1;
  --white:#FFFFFF;
  --soft:#FBF7F4;
  --danger:#D64545;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(18,21,26,.04), 0 8px 24px rgba(18,21,26,.06);
  --sh-2:0 12px 32px rgba(18,21,26,.10);
  --wrap:1200px;
  --narrow:760px;
  --sp:clamp(56px, 7vw, 96px);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--graphite);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--brand);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--graphite);font-weight:700;line-height:1.35;}
p{margin:0 0 1.4em 0;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(228,87,46,.35);outline-offset:2px;}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px;width:100%;}
.mono{font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;font-variant-numeric:tabular-nums;}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--ink);color:#C9CED6;font-size:13px;line-height:1.6;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;padding:4px 0;}
.topbar-note{display:flex;align-items:center;gap:8px;color:#C9CED6;}
.topbar-note i{color:var(--teal);}
.topbar-links{display:flex;align-items:center;gap:18px;flex-shrink:0;}
.topbar-links a{color:#C9CED6;transition:color .18s ease;}
.topbar-links a:hover{color:var(--brand);}
.topbar-links .dot{width:5px;height:5px;border-radius:50%;background:var(--teal);display:inline-block;margin-right:6px;vertical-align:middle;}

/* ============ 主导航 ============ */
.site-header{position:sticky;top:0;z-index:60;background:var(--white);border-bottom:1px solid var(--line);transition:box-shadow .2s ease;}
.site-header.is-stuck{box-shadow:0 6px 20px rgba(18,21,26,.08);}
.nav-inner{display:flex;align-items:center;gap:26px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:var(--r-sm);
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:18px;letter-spacing:1px;
}
.brand-name{font-size:18px;font-weight:700;color:var(--graphite);white-space:nowrap;letter-spacing:.2px;}
.nav-menu{display:flex;align-items:center;gap:22px;margin-left:auto;}
.nav-menu a{
  position:relative;font-size:15px;color:var(--graphite);padding:6px 2px;
  transition:color .18s ease;white-space:nowrap;
}
.nav-menu a:hover{color:var(--brand);}
.nav-menu a.active{color:var(--brand);font-weight:600;}
.nav-menu a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-search{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-pill);background:var(--soft);
  color:var(--muted);font-size:14px;cursor:pointer;transition:border-color .18s ease,background .18s ease;
}
.nav-search:hover{border-color:var(--brand);background:var(--brand-soft);color:var(--brand-dark);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:var(--white);color:var(--graphite);
  align-items:center;justify-content:center;font-size:17px;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease, box-shadow .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-light{background:#fff;color:var(--ink);}
.btn-light:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-2px);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;transform:translateY(-2px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;
  border-radius:var(--r-pill);font-size:13px;line-height:1;font-weight:500;
}
.badge-cat{background:var(--brand-soft);color:var(--brand-dark);}
.badge-pick{background:var(--amber);color:var(--ink);font-weight:600;}
.badge-state{background:var(--teal);color:#fff;}
.badge-line{background:transparent;border:1px solid var(--line);color:var(--muted);}

/* ============ 分类 Hero ============ */
.cat-hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;}
.cat-hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.30;}
.cat-hero-veil{position:absolute;inset:0;background:linear-gradient(100deg,rgba(18,21,26,.95) 0%,rgba(18,21,26,.82) 52%,rgba(18,21,26,.58) 100%);}
.cat-hero .wrap{position:relative;z-index:2;padding-top:52px;padding-bottom:56px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#A9B0B9;margin-bottom:22px;}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:rgba(255,255,255,.28);}
.breadcrumb a{color:#A9B0B9;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .current{color:#E9E6E2;}
.cat-hero h1{
  font-size:clamp(28px,4vw,44px);font-weight:700;line-height:1.3;color:#fff;
  max-width:820px;margin-bottom:18px;
}
.cat-hero h1 em{font-style:normal;color:var(--brand);}
.hero-sub{font-size:17px;line-height:1.85;color:#C9CED6;max-width:700px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 14px;
  border-radius:var(--r-pill);background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);color:#E4E1DD;font-size:13px;
}
.chip i{color:var(--teal);}
.chip strong{color:#fff;font-weight:700;}

/* ============ 筛选条 ============ */
.filter-bar{background:var(--white);border-bottom:1px solid var(--line);}
.filter-inner{display:flex;align-items:center;gap:16px;padding:16px 0;overflow-x:auto;scrollbar-width:none;}
.filter-inner::-webkit-scrollbar{display:none;}
.filter-label{flex-shrink:0;font-size:13px;color:var(--muted);letter-spacing:.5px;}
.filter-tags{display:flex;gap:10px;flex-shrink:0;}
.filter-tag{
  display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 16px;
  border-radius:var(--r-pill);border:1px solid var(--line);background:var(--soft);
  color:var(--graphite);font-size:14px;cursor:pointer;transition:all .18s ease;white-space:nowrap;
}
.filter-tag:hover{border-color:var(--brand);color:var(--brand-dark);background:var(--brand-soft);}
.filter-tag.is-on{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;}
.filter-tag .num{font-size:12px;opacity:.75;}

/* ============ 主体网格 ============ */
.main-section{padding:var(--sp) 0 calc(var(--sp) * .7);}
.section-head{margin-bottom:34px;}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;position:relative;padding-left:16px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.22em;width:4px;height:20px;
  border-radius:2px;background:var(--brand);
}
.section-head p{margin-top:10px;color:var(--muted);font-size:15px;max-width:720px;}
.grid-gap{row-gap:28px;}

/* ============ 纵向条目流 ============ */
.flow-list{display:flex;flex-direction:column;gap:18px;}
.flow-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 26px 24px;box-shadow:var(--sh-1);
  transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.flow-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(228,87,46,.3);}
.flow-head{display:flex;align-items:flex-start;gap:14px;margin-bottom:12px;}
.flow-num{
  flex-shrink:0;width:36px;height:36px;border-radius:var(--r-sm);
  background:var(--brand-soft);color:var(--brand-dark);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:14px;letter-spacing:.5px;
}
.flow-head h3{font-size:20px;font-weight:600;line-height:1.45;padding-top:3px;}
.flow-card > p{color:var(--muted);font-size:15.5px;margin-bottom:16px;}
.flow-points{display:grid;gap:10px;margin-bottom:18px;}
.flow-points li{position:relative;padding-left:20px;font-size:15px;color:var(--graphite);line-height:1.75;}
.flow-points li::before{
  content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;
  border-radius:50%;background:var(--teal);
}
.flow-tags{display:flex;flex-wrap:wrap;gap:8px;padding-top:14px;border-top:1px solid var(--line);}
.flow-media{border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);margin-bottom:18px;}
.flow-media img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.flow-card.is-feature{background:linear-gradient(180deg,#fff 0%,var(--soft) 100%);}

/* ============ 粘性侧栏 ============ */
.sticky-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--sh-1);
}
.side-card h3{font-size:17px;font-weight:600;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3 i{color:var(--brand);font-size:15px;}
.side-card p{font-size:14.5px;color:var(--muted);line-height:1.8;}
.side-list li{border-bottom:1px solid var(--line);}
.side-list li:last-child{border-bottom:0;}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:13px 0;font-size:15px;color:var(--graphite);transition:color .18s ease, transform .18s ease;
}
.side-list a:hover{color:var(--brand);transform:translateX(3px);}
.side-list a i{font-size:12px;color:var(--brand);}
.side-media{border-radius:var(--r-sm);overflow:hidden;margin-bottom:14px;}
.side-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.side-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.side-stat{background:var(--soft);border-radius:var(--r-sm);padding:14px;text-align:left;}
.side-stat strong{display:block;font-size:22px;color:var(--brand);line-height:1.2;}
.side-stat span{font-size:13px;color:var(--muted);}
.side-note{
  background:var(--ink);border-radius:var(--r-md);padding:22px;color:#C9CED6;
}
.side-note h3{color:#fff;}
.side-note p{color:#A9B0B9;font-size:14px;}
.side-note .btn{margin-top:16px;width:100%;}

/* ============ FAQ ============ */
.faq-section{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:var(--sp) 0;}
.faq-intro h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px;}
.faq-intro p{color:var(--muted);font-size:15.5px;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .2s ease, box-shadow .2s ease;
}
.faq-item[open]{border-color:rgba(228,87,46,.35);box-shadow:var(--sh-1);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:20px;font-size:17px;font-weight:600;color:var(--graphite);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-dark);}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:13px;color:var(--brand);flex-shrink:0;transition:transform .2s ease;
}
.faq-item[open] summary{box-shadow:inset 3px 0 0 var(--brand);}
.faq-item[open] summary::after{transform:rotate(180deg);}
.faq-answer{padding:0 20px 22px 20px;color:var(--muted);font-size:15px;line-height:1.8;}
.faq-answer strong{color:var(--graphite);}

/* ============ 相关分类 ============ */
.related-section{padding:var(--sp) 0 calc(var(--sp) * .75);}
.rel-card{
  display:block;height:100%;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-md);padding:24px;box-shadow:var(--sh-1);
  transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(228,87,46,.3);}
.rel-card .rel-ico{
  width:42px;height:42px;border-radius:var(--r-sm);background:var(--brand-soft);
  color:var(--brand-dark);display:flex;align-items:center;justify-content:center;
  font-size:17px;margin-bottom:16px;
}
.rel-card h3{font-size:18px;font-weight:600;margin-bottom:10px;}
.rel-card p{font-size:14.5px;color:var(--muted);margin-bottom:16px;}
.rel-more{font-size:14px;color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:6px;}

/* ============ CTA 深色条 ============ */
.cta-band{background:var(--ink);color:#fff;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:clamp(40px,5vw,64px) 0;}
.cta-text h2{font-size:clamp(22px,2.8vw,30px);color:#fff;margin-bottom:12px;}
.cta-text p{color:#A9B0B9;font-size:15.5px;max-width:640px;margin:0;}
.cta-actions{display:flex;gap:14px;flex-shrink:0;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#A9B0B9;padding:64px 0 0;font-size:14px;}
.footer-col{margin-bottom:34px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{width:34px;height:34px;font-size:17px;}
.footer-brand-name{color:#fff;font-size:17px;font-weight:700;}
.footer-desc{color:#A9B0B9;font-size:14px;line-height:1.8;margin-bottom:12px;}
.footer-domain{
  display:inline-block;font-size:13px;color:#C9CED6;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.1);border-radius:var(--r-pill);padding:4px 12px;
}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.site-footer ul li{margin-bottom:10px;}
.site-footer ul a{color:#A9B0B9;font-size:14px;transition:color .18s ease, transform .18s ease;display:inline-block;}
.site-footer ul a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);margin-top:20px;padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:#8F979F;font-size:13px;
}
.footer-bottom-links{display:flex;gap:20px;flex-wrap:wrap;}
.footer-bottom-links a{color:#8F979F;}
.footer-bottom-links a:hover{color:var(--brand);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .nav-inner{gap:18px;}
  .nav-menu{gap:16px;}
  .nav-menu a{font-size:14.5px;}
}
@media (max-width:1023px){
  .nav-inner{height:64px;}
  .nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-menu{
    display:none;position:fixed;left:0;right:0;top:102px;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;padding:6px 24px 18px;border-bottom:1px solid var(--line);
    box-shadow:var(--sh-2);max-height:calc(100vh - 102px);overflow-y:auto;
  }
  .nav-menu.open{display:flex;}
  .nav-menu a{padding:15px 2px;font-size:16px;border-bottom:1px solid var(--line);min-height:48px;display:flex;align-items:center;}
  .nav-menu a.active::after{display:none;}
  .sticky-side{position:static;top:auto;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cat-hero .wrap{padding-top:40px;padding-bottom:44px;}
}
@media (max-width:767px){
  .wrap{padding:0 16px;}
  body{font-size:15.5px;}
  .topbar-links a:nth-child(1),.topbar-links a:nth-child(2){display:none;}
  .topbar-note span{display:none;}
  .topbar-note::after{content:"内容分类持续补充";color:#C9CED6;font-size:13px;}
  .brand-name{font-size:16px;}
  .cat-hero h1{font-size:26px;}
  .hero-sub{font-size:15.5px;}
  .hero-actions .btn{flex:1 1 100%;}
  .flow-card{padding:22px 18px;}
  .flow-head h3{font-size:18px;}
  .faq-item summary{font-size:16px;padding:18px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
}
@media (max-width:520px){
  .side-stats{grid-template-columns:1fr;}
  .hero-chips .chip{width:100%;}
  .section-head h2{font-size:21px;}
}

/* roulang page: category3 */
:root{
  --brand:#E4572E;
  --brand-dark:#C7461F;
  --brand-soft:#FDEDE7;
  --teal:#12B39B;
  --amber:#F2B230;
  --ink:#12151A;
  --ink-2:#1A1E24;
  --title:#1B1F24;
  --muted:#5C6670;
  --faint:#8A929B;
  --line:#E6E2DC;
  --line-2:#DED9D2;
  --bg:#F6F4F1;
  --bg-2:#FBF7F4;
  --white:#FFFFFF;
  --r-lg:20px;
  --r:16px;
  --r-sm:10px;
  --pill:999px;
  --sh-1:0 1px 2px rgba(18,21,26,.04), 0 8px 24px rgba(18,21,26,.06);
  --sh-2:0 12px 32px rgba(18,21,26,.10);
  --sh-nav:0 6px 20px rgba(18,21,26,.08);
  --container:1200px;
  --narrow:760px;
  --ff:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --ff-mono:"SFMono-Regular",Menlo,Consolas,"Courier New",monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--ff);
  font-size:17px;
  line-height:1.85;
  color:var(--title);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand-dark);text-decoration:none;transition:color 180ms var(--ease),transform 180ms var(--ease);}
a:hover{color:var(--brand);}
h1,h2,h3,h4{margin:0;color:var(--title);font-weight:700;line-height:1.35;}
p{margin:0 0 1.4em;p}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
input{font-family:inherit;}
:focus-visible{outline:3px solid rgba(228,87,46,.35);outline-offset:2px;}

.wrap{width:100%;max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px;}
.narrow{max-width:var(--narrow);}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink);color:#C9CED6;font-size:13px;line-height:38px;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar-note{margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-links{display:flex;align-items:center;gap:18px;}
.topbar-links a{color:#C9CED6;font-size:13px;}
.topbar-links a:hover{color:var(--brand);}
.topbar-domain{font-family:var(--ff-mono);color:#8E97A3;letter-spacing:.02em;}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow 200ms var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-nav);}
.nav-inner{display:flex;align-items:center;gap:28px;min-height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--title);}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--brand),#F08050);
  color:#fff;font-weight:700;font-size:18px;line-height:36px;text-align:center;
  box-shadow:0 6px 14px rgba(228,87,46,.28);
}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.brand:hover{color:var(--title);}
.nav-menu{display:flex;align-items:center;gap:26px;margin-left:8px;}
.nav-menu > a{
  position:relative;color:#3A424C;font-size:15px;font-weight:500;
  padding:22px 0;white-space:nowrap;
}
.nav-menu > a:hover{color:var(--brand);}
.nav-menu > a.active{color:var(--brand);font-weight:700;}
.nav-menu > a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-side{display:flex;align-items:center;gap:14px;margin-left:auto;flex:0 0 auto;}
.nav-search{display:flex;align-items:center;position:relative;}
.nav-search input{
  width:190px;height:40px;border-radius:var(--r-sm);
  border:1px solid var(--line-2);background:var(--bg);
  padding:0 42px 0 14px;font-size:14px;color:var(--title);
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.nav-search input::placeholder{color:var(--faint);}
.nav-search input:focus{
  outline:none;border-color:var(--brand);background:var(--white);
  box-shadow:0 0 0 3px rgba(228,87,46,.18);
}
.nav-search button{
  position:absolute;right:4px;top:4px;width:32px;height:32px;
  border:0;border-radius:8px;background:transparent;color:var(--muted);
  display:flex;align-items:center;justify-content:center;font-size:14px;
}
.nav-search button:hover{background:var(--brand-soft);color:var(--brand);}
.nav-drawer-cta{display:none;}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:var(--white);padding:0;margin-left:auto;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--title);margin:3px auto;border-radius:2px;transition:transform 200ms var(--ease),opacity 200ms var(--ease);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:background-color 180ms var(--ease),color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
  white-space:nowrap;
}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(228,87,46,.24);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 24px rgba(228,87,46,.28);}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-2px);}
.btn-light{background:#fff;color:var(--ink);}
.btn-light:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-2px);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.55);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:var(--pill);font-size:13px;font-weight:600;line-height:1;
}
.badge-cat{background:var(--brand-soft);color:var(--brand-dark);}
.badge-pick{background:var(--amber);color:var(--ink);}
.badge-live{background:var(--teal);color:#fff;}
.badge-line{background:transparent;color:var(--muted);border:1px solid var(--line-2);}

/* ---------- 分类 Hero ---------- */
.cat-hero{
  position:relative;background-color:var(--ink);
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;color:#fff;overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(18,21,26,.95) 0%,rgba(18,21,26,.78) 52%,rgba(18,21,26,.46) 100%);
}
.hero-inner{position:relative;z-index:1;padding:52px 0 68px;}
.crumbs{margin-bottom:26px;}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#9AA3AE;}
.crumbs li{display:flex;align-items:center;gap:8px;}
.crumbs li + li::before{content:"/";color:#5C6670;}
.crumbs a{color:#C9CED6;}
.crumbs a:hover{color:var(--brand);}
.crumbs [aria-current]{color:#fff;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;
  border-radius:var(--pill);background:rgba(228,87,46,.18);
  border:1px solid rgba(228,87,46,.5);color:#FFD9CB;font-size:13px;font-weight:600;
  margin-bottom:20px;
}
.cat-hero h1{
  color:#fff;font-size:clamp(28px,4vw,44px);line-height:1.3;font-weight:700;
  max-width:20em;margin-bottom:18px;
}
.hero-sub{
  color:#C9CED6;font-size:17px;line-height:1.85;max-width:44em;margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:38px;}
.hero-stats li{display:flex;flex-direction:column;gap:2px;}
.hero-stats b{
  font-family:var(--ff-mono);font-size:24px;font-weight:700;color:#fff;line-height:1.2;
}
.hero-stats span{font-size:13px;color:#9AA3AE;}

/* ---------- 横条筛选 ---------- */
.filter-band{background:var(--white);border-bottom:1px solid var(--line);}
.filter-inner{display:flex;align-items:center;gap:14px;padding:16px 0;overflow-x:auto;scrollbar-width:none;}
.filter-inner::-webkit-scrollbar{display:none;}
.filter-label{font-size:13px;color:var(--muted);flex:0 0 auto;letter-spacing:.04em;}
.chip{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;
  border-radius:var(--pill);border:1px solid var(--line-2);background:var(--white);
  color:#3A424C;font-size:14px;font-weight:500;flex:0 0 auto;
  transition:all 180ms var(--ease);
}
.chip:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}
.chip.is-on{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;}
.chip.is-on:hover{background:var(--brand-dark);color:#fff;}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section.tint{background:var(--white);}
.section.dark{background:var(--ink-2);color:#C9CED6;}
.sec-head{max-width:52em;margin-bottom:34px;}
.sec-head .eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;
  color:var(--brand-dark);letter-spacing:.08em;margin-bottom:14px;
}
.sec-head .eyebrow::before{content:"";width:4px;height:20px;border-radius:2px;background:var(--brand);}
.sec-head h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:14px;}
.sec-head p{color:var(--muted);font-size:16px;margin-bottom:0;}
.section.dark .sec-head h2{color:#fff;}
.section.dark .sec-head p{color:#9AA3AE;}

/* ---------- Zigzag 主区 ---------- */
.zig-band{padding:20px 0 0;}
.zig-row{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  padding:52px 0;
}
.zig-row + .zig-row{border-top:1px solid var(--line);}
.zig-media{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);}
.zig-media img{width:100%;aspect-ratio:4/3;object-fit:cover;background:#EEE9E3;transition:transform 400ms var(--ease);}
.zig-media:hover img{transform:scale(1.03);}
.zig-media .media-tip{
  position:absolute;left:16px;bottom:16px;display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:var(--pill);
  background:rgba(18,21,26,.72);color:#fff;font-size:13px;font-weight:500;backdrop-filter:blur(4px);
}
.zig-body h3{font-size:22px;margin:16px 0 14px;}
.zig-body > p{color:var(--muted);font-size:16.5px;margin-bottom:20px;}
.zig-points{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px;}
.zig-points li{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;
  border-radius:var(--pill);background:var(--bg);border:1px solid var(--line);
  font-size:13.5px;color:#3A424C;
}
.zig-points li i{color:var(--teal);font-size:12px;}
.zig-meta{
  display:flex;flex-wrap:wrap;gap:20px;font-size:13.5px;color:var(--faint);
  padding-top:18px;border-top:1px dashed var(--line-2);margin-bottom:24px;
}
.zig-meta span{display:inline-flex;align-items:center;gap:7px;}
.zig-meta i{color:var(--brand);font-size:12px;}
.zig-row.zig-alt .zig-media{order:2;}
.zig-row.zig-alt .zig-body{order:1;}

/* ---------- 热度榜 ---------- */
.rank-wrap{margin-top:8px;}
.rank-item{
  display:grid;grid-template-columns:52px 1fr 220px 56px;align-items:center;gap:24px;
  padding:22px 0;border-bottom:1px solid rgba(255,255,255,.10);
}
.rank-item:first-child{border-top:1px solid rgba(255,255,255,.10);}
.rank-no{font-family:var(--ff-mono);font-size:20px;font-weight:700;color:var(--brand);}
.rank-main h3{color:#fff;font-size:18px;margin-bottom:6px;}
.rank-main p{margin:0;font-size:14px;color:#9AA3AE;}
.rank-bar{height:8px;border-radius:var(--pill);background:rgba(255,255,255,.12);overflow:hidden;}
.rank-bar span{display:block;height:100%;border-radius:var(--pill);background:linear-gradient(90deg,var(--brand),#F2A07D);width:var(--w,50%);}
.rank-num{font-family:var(--ff-mono);font-size:17px;font-weight:700;color:#fff;text-align:right;}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:340px 1fr;gap:56px;align-items:start;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 48px 20px 20px;font-size:17px;font-weight:600;color:var(--title);
  transition:background-color 180ms var(--ease),color 180ms var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:2px;
  background:var(--brand);opacity:0;transition:opacity 200ms var(--ease);
}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;
  position:absolute;right:20px;top:24px;color:var(--faint);
  transition:transform 200ms var(--ease),color 200ms var(--ease);
}
.faq-item summary:hover{background:var(--bg-2);color:var(--brand-dark);}
.faq-item[open] summary::before{opacity:1;}
.faq-item[open] summary::after{transform:rotate(180deg);color:var(--brand);}
.faq-item[open] summary{color:var(--brand-dark);}
.faq-answer{padding:0 48px 22px 20px;}
.faq-answer p{color:var(--muted);font-size:15px;line-height:1.85;margin:0;}

/* ---------- 相关分类推荐 ---------- */
.rec-grid{margin-top:6px;}
.rec-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r);
  padding:26px 24px;box-shadow:var(--sh-1);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.rec-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(228,87,46,.3);}
.rec-card h3{font-size:19px;margin:16px 0 12px;}
.rec-card p{color:var(--muted);font-size:15px;margin-bottom:20px;}
.rec-card .rec-link{
  margin-top:auto;display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.rec-card .rec-link i{transition:transform 180ms var(--ease);}
.rec-card:hover .rec-link i{transform:translateX(4px);}

/* ---------- CTA 深色条 ---------- */
.cta-band{background:var(--ink);color:#C9CED6;padding:56px 0;}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;}
.cta-text h2{color:#fff;font-size:clamp(22px,2.4vw,28px);margin-bottom:10px;}
.cta-text p{margin:0;color:#9AA3AE;font-size:15.5px;max-width:38em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#A9B0B9;padding:68px 0 0;font-size:14px;}
.footer-col{margin-bottom:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:34px;height:34px;line-height:34px;font-size:17px;border-radius:10px;}
.footer-brand-name{color:#fff;font-size:17px;font-weight:700;}
.footer-desc{color:#8E97A3;font-size:14px;line-height:1.8;margin-bottom:14px;}
.footer-domain{font-family:var(--ff-mono);font-size:13px;color:#6F7884;letter-spacing:.02em;}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.site-footer ul li{margin-bottom:10px;}
.site-footer ul a{color:#A9B0B9;font-size:14px;display:inline-block;transition:color 180ms var(--ease),transform 180ms var(--ease);}
.site-footer ul a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{
  margin-top:14px;padding:22px 0;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:#7A838F;
}
.footer-bottom-links{display:flex;flex-wrap:wrap;gap:20px;}
.footer-bottom-links a{color:#7A838F;font-size:13px;}
.footer-bottom-links a:hover{color:var(--brand);}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .nav-search input{width:150px;}
  .nav-menu{gap:18px;}
}
@media (max-width:1024px){
  .section{padding:72px 0;}
  .faq-grid{grid-template-columns:1fr;gap:32px;}
  .rank-item{grid-template-columns:44px 1fr 56px;gap:16px;}
  .rank-bar{display:none;}
  .zig-row{gap:34px;}
}
@media (max-width:900px){
  .nav-search{display:none;}
}
@media (max-width:820px){
  .nav-toggle{display:block;}
  .nav-menu{
    position:fixed;top:0;right:0;bottom:0;width:290px;max-width:86vw;
    background:var(--white);box-shadow:-12px 0 40px rgba(18,21,26,.18);
    flex-direction:column;align-items:stretch;gap:0;margin:0;padding:88px 22px 22px;
    transform:translateX(102%);transition:transform 220ms var(--ease);z-index:70;
    overflow-y:auto;
  }
  .nav-menu.is-open{transform:translateX(0);}
  .nav-menu > a{height:48px;line-height:48px;padding:0;border-bottom:1px solid var(--line);font-size:16px;}
  .nav-menu > a.active::after{display:none;}
  .nav-menu > a.active{color:var(--brand);}
  .nav-drawer-cta{display:inline-flex;margin-top:24px;height:48px;width:100%;}
  .nav-side{margin-left:0;}
  .nav-side .btn{display:none;}
  .hero-inner{padding:36px 0 52px;}
  .hero-stats{gap:26px;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .wrap{padding-left:16px;padding-right:16px;}
  .topbar-links a:not(:first-child){display:none;}
  .section{padding:56px 0;}
  .zig-row{grid-template-columns:1fr;gap:24px;padding:36px 0;}
  .zig-row.zig-alt .zig-media{order:0;}
  .zig-row.zig-alt .zig-body{order:0;}
  .zig-media img{aspect-ratio:16/9;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .brand-text{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .hero-stats{gap:20px;}
  .hero-stats b{font-size:20px;}
  .zig-body h3{font-size:19px;}
  .rank-item{grid-template-columns:36px 1fr 44px;gap:12px;}
  .rank-main h3{font-size:16px;}
  .faq-item summary{padding:18px 42px 18px 16px;font-size:16px;}
  .faq-answer{padding:0 42px 20px 16px;}
  .section{padding:48px 0;}
}

/* roulang page: category4 */
:root{
    --primary:#E4572E;
    --primary-dark:#C7461F;
    --primary-soft:#FDEDE7;
    --teal:#12B39B;
    --amber:#F2B230;
    --ink:#12151A;
    --ink-2:#1B1F24;
    --text:#1B1F24;
    --muted:#5C6670;
    --line:#E6E2DC;
    --line-soft:#F0ECE6;
    --paper:#F6F4F1;
    --white:#FFFFFF;
    --danger:#D64545;
    --radius-lg:20px;
    --radius:16px;
    --radius-sm:10px;
    --shadow-1:0 1px 2px rgba(18,21,26,.04), 0 8px 24px rgba(18,21,26,.06);
    --shadow-2:0 12px 32px rgba(18,21,26,.10);
    --shadow-nav:0 6px 20px rgba(18,21,26,.08);
    --container:1200px;
    --narrow:760px;
    --ease:180ms ease;
  }

  *,*::before,*::after{box-sizing:border-box;}

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

  body{
    margin:0;
    background:var(--paper);
    color:var(--text);
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }

  img{max-width:100%;display:block;border-style:none;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}

  :focus-visible{
    outline:3px solid rgba(228,87,46,.35);
    outline-offset:2px;
    border-radius:6px;
  }

  .wrap{
    width:100%;
    max-width:var(--container);
    margin:0 auto;
    padding:0 24px;
  }

  .mono{font-family:"SFMono-Regular",Menlo,Consolas,"Courier New",monospace;font-variant-numeric:tabular-nums;}

  /* ============ 顶部信息条 ============ */
  .topbar{
    background:var(--ink);
    color:#C9CED6;
    font-size:13px;
    line-height:38px;
    height:38px;
    overflow:hidden;
  }
  .topbar .wrap{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
  }
  .topbar-note{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
  .topbar-links{display:flex;align-items:center;gap:20px;flex-shrink:0;}
  .topbar-links a{color:#C9CED6;transition:color var(--ease);}
  .topbar-links a:hover{color:var(--primary);}
  .topbar-domain{color:#8C949E;}

  /* ============ 主导航 ============ */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:var(--white);
    border-bottom:1px solid var(--line);
  }
  .site-header.is-stuck{box-shadow:var(--shadow-nav);}
  .nav-shell{
    display:flex;
    align-items:center;
    gap:28px;
    height:68px;
  }
  .brand{
    display:flex;
    align-items:center;
    gap:10px;
    flex-shrink:0;
  }
  .brand-mark{
    width:34px;
    height:34px;
    border-radius:11px;
    background:linear-gradient(140deg,var(--primary) 0%,var(--primary-dark) 100%);
    color:#fff;
    font-size:17px;
    font-weight:700;
    display:flex;
    align-items:center;
    justify-content:center;
    letter-spacing:0;
    box-shadow:0 6px 16px rgba(228,87,46,.28);
  }
  .brand-name{
    font-size:17px;
    font-weight:700;
    letter-spacing:.2px;
    color:var(--ink);
  }

  .nav-menu{
    display:flex;
    align-items:center;
    gap:4px;
    flex:1;
    min-width:0;
  }
  .nav-menu a{
    position:relative;
    display:block;
    padding:0 13px;
    height:68px;
    line-height:68px;
    font-size:15px;
    color:var(--ink-2);
    white-space:nowrap;
    transition:color var(--ease);
  }
  .nav-menu a::after{
    content:"";
    position:absolute;
    left:13px;
    right:13px;
    bottom:16px;
    height:2px;
    background:var(--primary);
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform var(--ease);
  }
  .nav-menu a:hover{color:var(--primary);}
  .nav-menu a:hover::after{transform:scaleX(1);}
  .nav-menu a.active{color:var(--primary);font-weight:600;}
  .nav-menu a.active::after{transform:scaleX(1);}

  .nav-right{
    display:flex;
    align-items:center;
    gap:14px;
    flex-shrink:0;
  }
  .nav-search{
    display:flex;
    align-items:center;
    height:40px;
    border:1px solid var(--line);
    border-radius:var(--radius-sm);
    background:#FBFAF8;
    padding:0 12px;
    gap:8px;
    transition:border-color var(--ease),box-shadow var(--ease);
  }
  .nav-search:focus-within{
    border-color:var(--primary);
    box-shadow:0 0 0 3px rgba(228,87,46,.16);
    background:#fff;
  }
  .nav-search svg{width:16px;height:16px;fill:none;stroke:#8C949E;stroke-width:1.8;flex-shrink:0;}
  .nav-search input{
    border:0;
    background:transparent;
    outline:none;
    width:132px;
    font-size:14px;
    color:var(--text);
  }
  .nav-search input::placeholder{color:#9AA1AA;}

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:46px;
    padding:0 24px;
    border-radius:var(--radius-sm);
    font-size:15px;
    font-weight:600;
    border:1px solid transparent;
    cursor:pointer;
    transition:transform var(--ease),background-color var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease);
  }
  .btn-primary{background:var(--primary);color:#fff;}
  .btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{
    background:transparent;
    color:var(--primary);
    border-color:var(--primary);
  }
  .btn-ghost:hover{background:var(--primary-soft);transform:translateY(-2px);}
  .btn-ghost:active{transform:translateY(0);}
  .btn-light{
    background:#fff;
    color:var(--ink);
    border-color:rgba(255,255,255,.35);
  }
  .btn-light:hover{border-color:#fff;transform:translateY(-2px);}
  .btn-sm{height:40px;padding:0 18px;font-size:14px;}

  .hamburger{
    display:none;
    width:44px;
    height:44px;
    border:1px solid var(--line);
    border-radius:var(--radius-sm);
    background:#fff;
    align-items:center;
    justify-content:center;
    cursor:pointer;
  }
  .hamburger span{
    display:block;
    width:18px;
    height:2px;
    background:var(--ink);
    position:relative;
  }
  .hamburger span::before,
  .hamburger span::after{
    content:"";
    position:absolute;
    left:0;
    width:18px;
    height:2px;
    background:var(--ink);
    transition:transform var(--ease);
  }
  .hamburger span::before{top:-6px;}
  .hamburger span::after{top:6px;}

  .nav-mask{
    display:none;
    position:fixed;
    inset:0;
    background:rgba(18,21,26,.45);
    z-index:90;
  }
  .nav-mask.is-open{display:block;}

  /* ============ 分类 Hero ============ */
  .cat-hero{
    position:relative;
    overflow:hidden;
    background:var(--ink);
    color:#fff;
  }
  .cat-hero-bg{
    position:absolute;
    inset:0;
    background-size:cover;
    background-position:center;
    opacity:.5;
  }
  .cat-hero::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(100deg,rgba(18,21,26,.94) 0%,rgba(18,21,26,.82) 52%,rgba(18,21,26,.55) 100%);
  }
  .cat-hero-inner{
    position:relative;
    z-index:2;
    padding:44px 24px 64px;
  }

  .breadcrumb{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:#9AA1AA;
    margin-bottom:26px;
  }
  .breadcrumb li{display:flex;align-items:center;gap:8px;}
  .breadcrumb li+li::before{content:"/";color:#5C6670;}
  .breadcrumb a{color:#C9CED6;transition:color var(--ease);}
  .breadcrumb a:hover{color:var(--primary);}
  .breadcrumb li[aria-current] {color:#fff;}

  .hero-badge{
    display:inline-flex;
    align-items:center;
    gap:8px;
    height:26px;
    padding:0 14px;
    border-radius:999px;
    background:rgba(228,87,46,.18);
    border:1px solid rgba(228,87,46,.5);
    color:#FFB199;
    font-size:13px;
    margin-bottom:18px;
  }
  .hero-badge i{
    width:6px;height:6px;border-radius:50%;background:var(--teal);display:block;
  }

  .cat-hero h1{
    font-size:clamp(28px,4vw,44px);
    font-weight:700;
    line-height:1.3;
    letter-spacing:.3px;
    max-width:760px;
  }
  .hero-sub{
    margin-top:18px;
    font-size:17px;
    line-height:1.85;
    color:#C9CED6;
    max-width:660px;
  }
  .hero-stats{
    display:flex;
    flex-wrap:wrap;
    gap:14px 40px;
    margin-top:30px;
  }
  .hero-stat b{
    display:block;
    font-size:22px;
    font-weight:700;
    color:#fff;
    line-height:1.4;
  }
  .hero-stat span{font-size:13px;color:#9AA1AA;}
  .hero-actions{
    display:flex;
    flex-wrap:wrap;
    gap:14px;
    margin-top:32px;
  }

  /* ============ 收录方向条 ============ */
  .filter-bar{
    background:var(--white);
    border-bottom:1px solid var(--line);
  }
  .filter-inner{
    display:flex;
    align-items:center;
    gap:16px;
    padding:16px 24px;
    overflow-x:auto;
    scrollbar-width:thin;
  }
  .filter-label{
    font-size:13px;
    color:var(--muted);
    white-space:nowrap;
    flex-shrink:0;
  }
  .chips{display:flex;gap:10px;flex-wrap:nowrap;}
  .chip{
    display:inline-flex;
    align-items:center;
    height:32px;
    padding:0 16px;
    border-radius:999px;
    border:1px solid var(--line);
    background:#FBFAF8;
    color:var(--ink-2);
    font-size:14px;
    white-space:nowrap;
    transition:border-color var(--ease),color var(--ease),background-color var(--ease);
  }
  .chip:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-soft);}
  .chip.is-on{background:var(--primary-soft);border-color:rgba(228,87,46,.45);color:var(--primary-dark);font-weight:600;}

  /* ============ 通用板块 ============ */
  .section{padding:88px 0;}
  .section.alt{background:var(--white);}
  .section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:24px;
    margin-bottom:32px;
  }
  .section-title{
    display:flex;
    align-items:center;
    gap:14px;
    font-size:28px;
    font-weight:700;
    line-height:1.35;
    color:var(--ink);
  }
  .section-title::before{
    content:"";
    width:4px;
    height:22px;
    border-radius:2px;
    background:var(--primary);
    flex-shrink:0;
  }
  .section-desc{
    margin-top:12px;
    font-size:15px;
    color:var(--muted);
    max-width:620px;
  }
  .section-more{
    font-size:14px;
    color:var(--primary);
    white-space:nowrap;
    transition:transform var(--ease);
  }
  .section-more:hover{transform:translateX(3px);}

  /* ============ 小卡网格 ============ */
  .card-grid{margin-top:-8px;}
  .mini-card{
    display:flex;
    flex-direction:column;
    background:var(--white);
    border:1px solid var(--line);
    border-radius:var(--radius);
    overflow:hidden;
    height:100%;
    margin-bottom:24px;
    transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  }
  .mini-card:hover{
    transform:translateY(-4px);
    box-shadow:var(--shadow-2);
    border-color:rgba(228,87,46,.3);
  }
  .mini-thumb{
    position:relative;
    aspect-ratio:4/3;
    background:#EEE9E3;
    overflow:hidden;
  }
  .mini-thumb img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform 320ms ease;
  }
  .mini-card:hover .mini-thumb img{transform:scale(1.04);}
  .mini-type{
    position:absolute;
    left:10px;
    top:10px;
    height:24px;
    padding:0 10px;
    border-radius:999px;
    font-size:13px;
    line-height:24px;
    background:rgba(18,21,26,.72);
    color:#fff;
    backdrop-filter:blur(2px);
  }
  .mini-type.hot{background:var(--amber);color:var(--ink);}
  .mini-body{
    padding:16px;
    display:flex;
    flex-direction:column;
    gap:12px;
    flex:1;
  }
  .mini-title{
    font-size:16px;
    font-weight:600;
    line-height:1.5;
    color:var(--ink-2);
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
    min-height:48px;
    transition:color var(--ease);
  }
  .mini-card:hover .mini-title{color:var(--primary-dark);}
  .mini-foot{
    margin-top:auto;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:10px;
    font-size:13px;
    color:var(--muted);
    padding-top:12px;
    border-top:1px solid var(--line-soft);
  }
  .mini-foot .dot{
    width:6px;height:6px;border-radius:50%;background:var(--teal);display:inline-block;margin-right:6px;
  }

  /* ============ 相关分类 ============ */
  .rel-cats{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:20px;
    margin-top:8px;
  }
  .rel-cat{
    display:flex;
    flex-direction:column;
    gap:10px;
    background:var(--white);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:22px 20px;
    transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease),background-color var(--ease);
  }
  .rel-cat:hover{
    transform:translateY(-4px);
    box-shadow:var(--shadow-2);
    border-color:rgba(228,87,46,.3);
    background:var(--primary-soft);
  }
  .rel-cat .idx{
    font-size:13px;
    font-weight:700;
    color:var(--teal);
    letter-spacing:1px;
  }
  .rel-cat h3{font-size:19px;font-weight:600;color:var(--ink);}
  .rel-cat p{font-size:14px;color:var(--muted);line-height:1.7;}
  .rel-cat .go{font-size:13px;color:var(--primary);font-weight:600;}

  /* ============ FAQ ============ */
  .faq-list{
    border-top:1px solid var(--line);
  }
  .faq-item{
    border-bottom:1px solid var(--line);
  }
  .faq-q{
    position:relative;
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    padding:20px 20px 20px 0;
    background:transparent;
    border:0;
    text-align:left;
    font-size:17px;
    font-weight:600;
    color:var(--ink);
    cursor:pointer;
    transition:color var(--ease),padding-left var(--ease);
  }
  .faq-q::before{
    content:"";
    position:absolute;
    left:0;
    top:20px;
    bottom:20px;
    width:3px;
    border-radius:2px;
    background:var(--primary);
    opacity:0;
    transition:opacity var(--ease);
  }
  .faq-q:hover{color:var(--primary);}
  .faq-item.open .faq-q{color:var(--primary-dark);padding-left:16px;}
  .faq-item.open .faq-q::before{opacity:1;}
  .faq-arrow{
    flex-shrink:0;
    width:18px;height:18px;
    stroke:#8C949E;
    stroke-width:2;
    fill:none;
    transition:transform 200ms ease,stroke var(--ease);
  }
  .faq-item.open .faq-arrow{transform:rotate(180deg);stroke:var(--primary);}
  .faq-a{
    display:none;
    padding:0 40px 22px 0;
    font-size:15px;
    line-height:1.8;
    color:var(--muted);
  }
  .faq-item.open .faq-a{display:block;}

  /* ============ CTA ============ */
  .cta-band{
    background:var(--ink);
    color:#fff;
    padding:56px 0;
  }
  .cta-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:32px;
    flex-wrap:wrap;
  }
  .cta-inner h2{
    font-size:26px;
    font-weight:700;
    line-height:1.4;
  }
  .cta-inner p{
    margin-top:10px;
    font-size:15px;
    color:#A9B0B9;
    max-width:560px;
  }
  .cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

  /* ============ 页脚 ============ */
  .site-footer{
    background:var(--ink);
    color:#A9B0B9;
    padding:64px 0 0;
  }
  .footer-col{margin-bottom:40px;}
  .footer-brand{
    display:flex;
    align-items:center;
    gap:10px;
    margin-bottom:16px;
  }
  .footer-brand .brand-mark{width:32px;height:32px;border-radius:10px;font-size:16px;}
  .footer-brand-name{font-size:17px;font-weight:700;color:#fff;}
  .footer-desc{
    font-size:14px;
    line-height:1.8;
    color:#A9B0B9;
    margin-bottom:14px;
  }
  .footer-domain{
    display:inline-block;
    font-size:13px;
    color:#7C848E;
    letter-spacing:.4px;
  }
  .footer-col h4{
    font-size:15px;
    font-weight:600;
    color:#fff;
    margin-bottom:16px;
  }
  .footer-col ul li{margin-bottom:10px;}
  .footer-col ul a{
    font-size:14px;
    color:#A9B0B9;
    transition:color var(--ease),transform var(--ease);
    display:inline-block;
  }
  .footer-col ul a:hover{color:var(--primary);transform:translateX(2px);}
  .footer-bottom{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
    border-top:1px solid rgba(255,255,255,.08);
    padding:22px 0 26px;
    font-size:13px;
    color:#7C848E;
  }
  .footer-bottom-links{display:flex;gap:20px;flex-wrap:wrap;}
  .footer-bottom-links a{color:#7C848E;transition:color var(--ease);}
  .footer-bottom-links a:hover{color:var(--primary);}

  /* ============ 响应式 ============ */
  @media (max-width:1280px){
    .nav-menu a{padding:0 10px;font-size:14px;}
    .nav-menu a::after{left:10px;right:10px;}
  }

  @media (max-width:1024px){
    .nav-search{display:none;}
    .hamburger{display:flex;}
    .nav-menu{
      position:fixed;
      top:0;
      right:-320px;
      width:300px;
      height:100%;
      background:#fff;
      flex-direction:column;
      align-items:stretch;
      gap:0;
      padding:76px 0 96px;
      overflow-y:auto;
      box-shadow:-8px 0 32px rgba(18,21,26,.14);
      transition:right 200ms ease;
      z-index:100;
    }
    .nav-menu.is-open{right:0;}
    .nav-menu a{
      height:48px;
      line-height:48px;
      padding:0 24px;
      border-bottom:1px solid var(--line);
      font-size:15px;
    }
    .nav-menu a::after{display:none;}
    .nav-menu a.active{background:var(--primary-soft);}
    .drawer-cta{
      position:fixed;
      right:0;
      bottom:0;
      width:300px;
      padding:16px 24px 24px;
      background:#fff;
      border-top:1px solid var(--line);
      display:none;
      z-index:101;
    }
    .drawer-cta.is-open{display:block;}
    .drawer-cta .btn{width:100%;}
    .section{padding:72px 0;}
    .rel-cats{grid-template-columns:repeat(2,1fr);}
  }

  @media (max-width:768px){
    .wrap{padding:0 16px;}
    .topbar .wrap{padding:0 16px;}
    .topbar-links a:not(.keep){display:none;}
    .cat-hero-inner{padding:32px 16px 48px;}
    .hero-stats{gap:12px 28px;}
    .hero-stat b{font-size:19px;}
    .section{padding:56px 0;}
    .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
    .section-title{font-size:23px;}
    .cta-inner{flex-direction:column;align-items:flex-start;}
    .cta-inner h2{font-size:22px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
  }

  @media (max-width:520px){
    .brand-name{font-size:16px;}
    .cat-hero h1{font-size:26px;}
    .hero-sub{font-size:15px;}
    .hero-actions .btn{width:100%;}
    .rel-cats{grid-template-columns:1fr;}
    .faq-q{font-size:16px;padding-right:12px;}
    .faq-a{padding-right:8px;}
    .cta-actions{width:100%;}
    .cta-actions .btn{width:100%;}
  }