/* roulang page: index */
:root{
  --c-primary:#F25C05;
  --c-primary-d:#C94A03;
  --c-primary-soft:rgba(242,92,5,.08);
  --c-ink:#14191C;
  --c-ink-2:#3A4247;
  --c-accent:#17A98C;
  --c-bg:#F5F3EF;
  --c-card:#FFFFFF;
  --c-line:#E4DFD7;
  --c-muted:#767F84;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(20,25,28,.05);
  --sh-2:0 12px 28px -14px rgba(20,25,28,.22);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink-2);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;transition:color .18s ease-out;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:-.01em;line-height:1.3;}
h1{font-size:46px;line-height:1.25;}
h2{font-size:32px;line-height:1.3;}
h3{font-size:21px;line-height:1.45;}
h4{font-size:17px;line-height:1.5;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}

.wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.section-head h2{position:relative;padding-left:14px;}
.section-head h2::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:22px;background:var(--c-primary);border-radius:2px;}
.section-head p{margin-top:10px;font-size:15px;color:var(--c-muted);max-width:640px;}
.link-more{font-size:15px;font-weight:600;color:var(--c-primary);white-space:nowrap;border-bottom:1px solid transparent;padding-bottom:2px;}
.link-more:hover{border-bottom-color:var(--c-primary);}

/* ============ header ============ */
.site-head{position:sticky;top:0;z-index:60;background:rgba(245,243,239,.92);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--c-line);}
.head-in{display:flex;align-items:center;gap:32px;height:72px;transition:height .18s ease-out;}
.site-head.scrolled .head-in{height:64px;}
.logo{font-size:19px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em;white-space:nowrap;}
.logo-em{color:var(--c-primary);}
.logo-light{color:#fff;}
.nav-main{display:flex;align-items:center;gap:28px;margin-left:8px;flex:1;}
.nav-a{position:relative;font-size:15px;font-weight:500;color:var(--c-ink-2);padding:6px 0;white-space:nowrap;}
.nav-a:hover{color:var(--c-ink);}
.nav-a.active{color:var(--c-ink);font-weight:600;}
.nav-a.active::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--c-primary);border-radius:2px;}
.head-right{display:flex;align-items:center;}
.burger{display:none;width:40px;height:40px;flex-direction:column;justify-content:center;align-items:center;gap:6px;border-radius:10px;}
.burger span{display:block;width:22px;height:1.5px;background:var(--c-ink);border-radius:2px;transition:transform .18s ease-out,opacity .18s ease-out;}
.burger.open span:nth-child(1){transform:translateY(3.75px) rotate(45deg);}
.burger.open span:nth-child(2){transform:translateY(-3.75px) rotate(-45deg);}

/* ============ buttons ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:background-color .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-d);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:scale(.98);}
.btn-outline{border-color:var(--c-ink);color:var(--c-ink);background:transparent;}
.btn-outline:hover{background:var(--c-ink);color:#fff;}
.btn-ghost{color:#fff;border-color:rgba(255,255,255,.28);}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;border-radius:var(--r-btn);}
.btn .ico{width:16px;height:16px;flex:none;}

/* ============ drawer ============ */
.drawer-mask{position:fixed;inset:0;background:rgba(20,25,28,.42);z-index:70;opacity:0;transition:opacity .2s ease-out;}
.drawer-mask.show{opacity:1;}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(360px,86vw);background:var(--c-bg);z-index:80;transform:translateX(102%);transition:transform .24s ease-out;display:flex;flex-direction:column;padding:24px 24px 32px;}
.drawer.show{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:20px;border-bottom:1px solid var(--c-line);}
.drawer-close{font-size:26px;line-height:1;color:var(--c-muted);width:36px;height:36px;border-radius:10px;}
.drawer-close:hover{color:var(--c-ink);}
.drawer-nav{display:flex;flex-direction:column;margin-top:16px;flex:1;}
.drawer-nav a{font-size:20px;line-height:1.6;color:var(--c-ink-2);padding:16px 0;border-bottom:1px solid var(--c-line);}
.drawer-nav a.active,.drawer-nav a:hover{color:var(--c-primary);font-weight:600;}
.drawer-cta{width:100%;margin-top:24px;}

/* ============ hero ============ */
.hero{position:relative;overflow:hidden;padding:72px 0 88px;border-bottom:1px solid var(--c-line);}
.hero-bg{position:absolute;inset:0;pointer-events:none;background-image:repeating-linear-gradient(115deg,rgba(242,92,5,.045) 0 1px,transparent 1px 24px),radial-gradient(circle at 84% 16%,rgba(242,92,5,.11),transparent 56%);}
.hero-grid{position:relative;display:grid;grid-template-columns:56fr 44fr;gap:56px;align-items:center;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--c-primary);background:var(--c-primary-soft);border-radius:999px;padding:5px 14px;}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-primary);}
.hero h1{margin-top:20px;}
.hero-sub{margin-top:18px;font-size:19px;line-height:1.7;color:var(--c-ink-2);max-width:560px;}
.hero-actions{display:flex;gap:12px;margin-top:32px;flex-wrap:wrap;}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:44px;padding-top:28px;border-top:1px solid var(--c-line);}
.hero-stats strong{display:block;font-size:24px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em;line-height:1.3;}
.hero-stats span{display:block;margin-top:2px;font-size:13px;color:var(--c-muted);line-height:1.6;}
.hero-media{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-2);}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);}
.hero-media::after{content:"";position:absolute;inset:auto 0 0 0;height:42%;background:linear-gradient(180deg,rgba(20,25,28,0) 0%,rgba(20,25,28,.62) 100%);pointer-events:none;}
.hero-media-tag{position:absolute;left:20px;bottom:18px;right:20px;z-index:2;color:#fff;}
.hero-media-tag strong{display:block;font-size:16px;font-weight:600;}
.hero-media-tag span{font-size:13px;color:rgba(255,255,255,.76);}

/* ============ bento ============ */
.bento{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:12px;transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;}
.card:hover{transform:translateY(-2px);border-color:rgba(242,92,5,.32);box-shadow:var(--sh-2);}
.card-media{border-radius:var(--r-img);overflow:hidden;background:#EDE9E2;aspect-ratio:16/10;position:relative;}
.card-media img{width:100%;height:100%;object-fit:cover;}
.card-media .badge{position:absolute;top:12px;left:12px;}
.badge{display:inline-flex;align-items:center;font-size:12.5px;font-weight:600;color:var(--c-primary);background:var(--c-primary-soft);border-radius:999px;padding:4px 12px;line-height:1.6;}
.badge-solid{background:#fff;color:var(--c-primary);}
.card p{font-size:14.5px;line-height:1.8;color:var(--c-muted);}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:8px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-muted);}
.dot-live{display:inline-flex;align-items:center;gap:6px;}
.dot-live::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);}
.card-arrow{width:18px;height:18px;color:var(--c-primary);flex:none;transition:transform .18s ease-out;}
.card:hover .card-arrow{transform:translateX(3px);}
.bento-a{grid-column:span 2;}
.bento-wide{grid-column:span 2;}
.bento-a .card-media{aspect-ratio:16/9;}

/* ============ cats ============ */
.cats{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.cat-card{position:relative;display:flex;flex-direction:column;background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;}
.cat-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(242,92,5,.32);}
.cat-card-img{aspect-ratio:16/9;overflow:hidden;background:#EDE9E2;}
.cat-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.cat-card:hover .cat-card-img img{transform:scale(1.03);}
.cat-card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.cat-card-body h3{font-size:22px;}
.cat-card-body p{font-size:14.5px;color:var(--c-muted);line-height:1.8;}
.cat-tags{display:flex;flex-wrap:wrap;gap:8px;}
.tag{font-size:12.5px;color:var(--c-ink-2);background:#F1EEE8;border-radius:999px;padding:4px 12px;}
.cat-card-foot{margin-top:auto;display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--c-primary);padding-top:8px;}

/* ============ reviews ============ */
.review-rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 24px;margin:0 -4px;scrollbar-width:none;}
.review-rail::-webkit-scrollbar{display:none;}
.review-card{flex:0 0 340px;scroll-snap-align:start;background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px;display:flex;flex-direction:column;gap:14px;box-shadow:var(--sh-1);}
.review-top{display:flex;align-items:center;gap:12px;}
.avatar{width:42px;height:42px;flex:none;border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:17px;}
.review-name{font-size:15px;font-weight:600;color:var(--c-ink);line-height:1.4;}
.review-src{font-size:12.5px;color:var(--c-muted);}
.score{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--c-muted);}
.score b{color:var(--c-primary);font-size:15px;}
.bars{display:flex;gap:3px;}
.bars i{display:block;width:14px;height:5px;border-radius:2px;background:var(--c-primary);}
.review-card p{font-size:15px;line-height:1.8;color:var(--c-ink-2);}
.review-date{margin-top:auto;font-size:13px;color:var(--c-muted);padding-top:10px;border-top:1px solid var(--c-line);}
.rail-ctrl{display:flex;gap:10px;}
.rail-btn{width:36px;height:36px;border-radius:50%;border:1px solid var(--c-line);display:flex;align-items:center;justify-content:center;color:var(--c-ink-2);background:var(--c-card);transition:border-color .18s ease-out,color .18s ease-out;}
.rail-btn:hover{border-color:var(--c-primary);color:var(--c-primary);}

/* ============ assure ============ */
.assure{background:var(--c-ink);padding:40px 0;}
.assure-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.assure-item{padding:0 26px;border-left:1px solid rgba(255,255,255,.12);}
.assure-item:first-child{border-left:0;padding-left:0;}
.assure-item i{display:block;width:24px;height:2px;background:var(--c-primary);border-radius:2px;margin-bottom:16px;}
.assure-item strong{display:block;font-size:15.5px;font-weight:600;color:#fff;}
.assure-item span{display:block;margin-top:6px;font-size:13px;line-height:1.7;color:rgba(255,255,255,.62);}

/* ============ news ============ */
.news-layout{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;}
.news-lead{display:flex;flex-direction:column;gap:14px;background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;}
.news-lead:hover{transform:translateY(-2px);border-color:rgba(242,92,5,.32);box-shadow:var(--sh-2);}
.news-lead-media{position:relative;border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/9;background:#EDE9E2;}
.news-lead-media img{width:100%;height:100%;object-fit:cover;}
.news-lead h3{font-size:23px;}
.news-lead p{font-size:14.5px;color:var(--c-muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.meta-row{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-muted);padding-top:6px;border-top:1px solid var(--c-line);}
.news-list{display:flex;flex-direction:column;background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);}
.news-item{display:flex;align-items:center;gap:16px;padding:16px 20px;border-bottom:1px solid var(--c-line);transition:background-color .18s ease-out,transform .18s ease-out;}
.news-item:last-child{border-bottom:0;}
.news-item:hover{background:#FBF9F5;transform:translateX(4px);}
.news-thumb{width:72px;height:72px;flex:none;border-radius:var(--r-img);overflow:hidden;background:#EDE9E2;}
.news-thumb img{width:100%;height:100%;object-fit:cover;}
.news-body{min-width:0;display:flex;flex-direction:column;gap:6px;}
.news-title{font-size:16.5px;font-weight:600;color:var(--c-ink);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{font-size:12.5px;color:var(--c-muted);}
.news-empty{grid-column:1/-1;background:var(--c-card);border:1px dashed var(--c-line);border-radius:var(--r-card);padding:56px 24px;text-align:center;color:var(--c-muted);font-size:15px;}

/* ============ faq ============ */
.faq-wrap{max-width:860px;}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0;font-size:16.5px;font-weight:600;color:var(--c-ink);}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-sign{position:relative;width:18px;height:18px;flex:none;}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;top:50%;left:0;width:18px;height:1.5px;background:var(--c-primary);border-radius:2px;transform:translateY(-50%);transition:transform .2s ease-out;}
.faq-sign::after{transform:translateY(-50%) rotate(90deg);}
.faq-item[open] .faq-sign::after{transform:translateY(-50%) rotate(0deg);}
.faq-answer{padding:0 40px 24px 0;font-size:15px;line-height:1.85;color:var(--c-muted);}

/* ============ cta ============ */
.cta-band{background:var(--c-ink);border-radius:16px;padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;position:relative;overflow:hidden;}
.cta-band::after{content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(242,92,5,.24),transparent 68%);pointer-events:none;}
.cta-band h2{color:#fff;font-size:26px;}
.cta-band p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.68);max-width:560px;}
.cta-actions{display:flex;gap:12px;flex:none;position:relative;z-index:1;}

/* ============ footer ============ */
.site-foot{background:var(--c-ink);color:rgba(255,255,255,.66);padding-top:64px;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.foot-brand .logo{font-size:19px;}
.foot-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:320px;}
.foot-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
.foot-col li{font-size:14px;line-height:2;color:rgba(255,255,255,.62);}
.foot-col a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:2px;}
.foot-col{position:relative;padding-left:24px;border-left:1px solid rgba(255,255,255,.12);}
.foot-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:22px;padding-bottom:28px;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:rgba(255,255,255,.48);}

/* ============ responsive ============ */
@media (max-width:1024px){
  .wrap{padding:0 24px;}
  .section{padding:72px 0;}
  h1{font-size:34px;}
  h2{font-size:25px;}
  .nav-main,.head-right{display:none;}
  .burger{display:flex;}
  .hero{padding:48px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-sub{font-size:17px;max-width:none;}
  .hero-media img{max-height:40vh;aspect-ratio:16/10;}
  .hero-stats{margin-top:32px;}
  .bento{grid-template-columns:repeat(2,1fr);}
  .bento-a,.bento-wide{grid-column:span 2;}
  .cats{grid-template-columns:1fr;}
  .assure-grid{grid-template-columns:repeat(2,1fr);gap:28px 0;}
  .assure-item:nth-child(3){border-left:0;padding-left:0;}
  .news-layout{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px;}
  .cta-actions{width:100%;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .foot-col{padding-left:0;border-left:0;}
}
@media (max-width:640px){
  .wrap{padding:0 20px;}
  .section{padding:56px 0;}
  h1{font-size:30px;}
  h2{font-size:23px;}
  h3{font-size:19px;}
  .head-in{height:64px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px;}
  .hero-actions .btn{width:100%;}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:20px;}
  .bento{grid-template-columns:1fr;gap:16px;}
  .bento-a,.bento-wide{grid-column:span 1;}
  .review-card{flex:0 0 84vw;}
  .assure-grid{grid-template-columns:1fr;gap:22px;}
  .assure-item{border-left:0;padding-left:0;}
  .news-item{transform:none;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --c-primary:#F25C05;
  --c-primary-d:#C94A03;
  --c-ink:#14191C;
  --c-ink-2:#3A4247;
  --c-accent:#17A98C;
  --c-bg:#F5F3EF;
  --c-card:#FFFFFF;
  --c-line:#E4DFD7;
  --c-muted:#767F84;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(20,25,28,.05);
  --sh-2:0 12px 28px -14px rgba(20,25,28,.22);
  --wrap:1200px;
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink-2);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--c-ink);margin:0;font-weight:700;letter-spacing:-0.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a:focus-visible,button:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding-left:20px;padding-right:20px;}
@media (min-width:640px){.wrap{padding-left:24px;padding-right:24px;}}
@media (min-width:1024px){.wrap{padding-left:32px;padding-right:32px;}}

/* ---------- 顶部导航 ---------- */
.site-head{
  position:sticky;top:0;z-index:60;
  background:rgba(245,243,239,.92);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--ease);
}
.site-head.scrolled{box-shadow:0 6px 18px -14px rgba(20,25,28,.35);}
.head-inner{display:flex;align-items:center;gap:28px;height:72px;transition:height var(--ease);}
.site-head.scrolled .head-inner{height:64px;}
.logo{font-size:19px;font-weight:700;letter-spacing:-0.02em;color:var(--c-ink);white-space:nowrap;}
.logo-em{color:var(--c-primary);}
.nav-main{display:flex;align-items:center;gap:26px;margin-left:10px;margin-right:auto;}
.nav-a{position:relative;font-size:15px;font-weight:500;color:var(--c-ink-2);padding:6px 0;transition:color var(--ease);}
.nav-a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform var(--ease);}
.nav-a:hover{color:var(--c-ink);}
.nav-a:hover::after,.nav-a.active::after{transform:scaleX(1);}
.nav-a.active{color:var(--c-ink);font-weight:600;}
.head-cta{flex:none;}
.burger{display:none;width:44px;height:44px;align-items:center;justify-content:center;flex-direction:column;gap:5px;border:1px solid var(--c-line);border-radius:var(--r-btn);background:transparent;cursor:pointer;transition:border-color var(--ease),background var(--ease);}
.burger span{display:block;width:20px;height:1.5px;background:var(--c-ink);border-radius:2px;}
.burger:hover{border-color:rgba(242,92,5,.45);background:rgba(242,92,5,.05);}
@media (max-width:1024px){
  .nav-main{display:none;}
  .head-cta{display:none;}
  .burger{display:flex;margin-left:auto;}
}
.drawer{position:fixed;top:0;right:0;height:100dvh;width:min(86vw,380px);background:var(--c-bg);z-index:90;transform:translateX(102%);transition:transform 260ms cubic-bezier(.22,.7,.3,1);display:flex;flex-direction:column;padding:22px;box-shadow:-18px 0 44px -26px rgba(20,25,28,.45);overflow-y:auto;}
.drawer.open{transform:translateX(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--c-line);}
.drawer-close{width:40px;height:40px;border:1px solid var(--c-line);border-radius:var(--r-btn);background:transparent;cursor:pointer;font-size:18px;line-height:1;color:var(--c-ink);}
.drawer-nav{display:flex;flex-direction:column;margin-top:8px;}
.drawer-nav a{font-size:20px;font-weight:500;color:var(--c-ink);padding:18px 2px;border-bottom:1px solid var(--c-line);transition:color var(--ease),padding-left var(--ease);}
.drawer-nav a:hover{color:var(--c-primary);padding-left:8px;}
.drawer-foot{margin-top:auto;padding-top:24px;}
.drawer-mask{position:fixed;inset:0;background:rgba(20,25,28,.45);opacity:0;visibility:hidden;transition:opacity 260ms ease-out,visibility 260ms;z-index:80;}
.drawer-mask.open{opacity:1;visibility:visible;}
body.locked{overflow:hidden;}

/* ---------- 按钮 / 胶囊 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease),border-color var(--ease);}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-d);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:scale(.98);}
.btn-outline{border-color:var(--c-ink);color:var(--c-ink);background:transparent;}
.btn-outline:hover{background:rgba(20,25,28,.06);transform:translateY(-1px);}
.btn-ghost{border-color:var(--c-line);color:var(--c-ink);background:var(--c-card);}
.btn-ghost:hover{border-color:rgba(242,92,5,.45);color:var(--c-primary);transform:translateY(-1px);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;border-radius:var(--r-btn);}
.pill{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:rgba(242,92,5,.08);color:var(--c-primary);font-size:12.5px;font-weight:600;letter-spacing:.01em;}
.pill-soft{background:rgba(20,25,28,.06);color:var(--c-ink-2);}
.dot{width:7px;height:7px;border-radius:50%;background:var(--c-accent);display:inline-block;}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:26px 0 0;font-size:13px;color:var(--c-muted);}
.crumb li{display:flex;align-items:center;}
.crumb li+li::before{content:"/";margin:0 8px;color:#CFC7BB;}
.crumb a{color:var(--c-muted);transition:color var(--ease);}
.crumb a:hover{color:var(--c-primary);}
.crumb [aria-current="page"]{color:var(--c-ink-2);}

/* ---------- 文章头部 ---------- */
.post-head{padding:26px 0 0;}
.post-head-inner{max-width:760px;margin:0 auto;}
.post-title{font-size:44px;line-height:1.25;font-weight:700;letter-spacing:-0.01em;margin-top:16px;word-break:break-word;}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:26px;padding:14px 0;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);font-size:13.5px;color:var(--c-muted);}
.post-meta .mt{display:inline-flex;align-items:center;gap:7px;}
.post-meta .mt b{color:var(--c-ink-2);font-weight:600;}
.post-meta .sep{width:1px;height:14px;background:var(--c-line);}
@media (max-width:900px){.post-title{font-size:34px;}}
@media (max-width:640px){.post-title{font-size:29px;}.post-meta{gap:8px 14px;font-size:13px;padding:12px 0;}}

/* ---------- 正文 ---------- */
.post-main{padding:38px 0 0;}
.post-body{max-width:760px;margin:0 auto;font-size:17px;line-height:1.9;color:var(--c-ink-2);word-break:break-word;}
.post-body p{margin:0 0 1.15em;}
.post-body h2{position:relative;font-size:28px;line-height:1.4;margin:2.2em 0 .7em;padding-left:15px;}
.post-body h2::before{content:"";position:absolute;left:0;top:.3em;width:3px;height:22px;background:var(--c-primary);border-radius:2px;}
.post-body h3{font-size:21px;line-height:1.45;margin:1.6em 0 .55em;color:var(--c-ink);}
.post-body h4{font-size:17.5px;margin:1.4em 0 .5em;color:var(--c-ink);}
.post-body ul{margin:0 0 1.2em;}
.post-body ul li{position:relative;padding-left:20px;margin-bottom:.5em;line-height:1.85;}
.post-body ul li::before{content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:1px;background:var(--c-primary);}
.post-body ol{margin:0 0 1.2em;counter-reset:pl;}
.post-body ol li{position:relative;padding-left:26px;margin-bottom:.55em;counter-increment:pl;}
.post-body ol li::before{content:counter(pl);position:absolute;left:0;top:.34em;width:18px;height:18px;border-radius:5px;background:rgba(242,92,5,.1);color:var(--c-primary);font-size:11.5px;font-weight:700;display:flex;align-items:center;justify-content:center;line-height:1;}
.post-body blockquote{margin:1.5em 0;padding:20px;border-left:3px solid var(--c-primary);background:rgba(242,92,5,.045);border-radius:0 var(--r-img) var(--r-img) 0;font-size:16px;color:var(--c-ink-2);}
.post-body blockquote p:last-child{margin-bottom:0;}
.post-body img{border-radius:var(--r-img);margin:1.5em 0 0;width:100%;height:auto;}
.post-body figure{margin:0 0 1.5em;}
.post-body figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:.6em;line-height:1.65;}
.post-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.post-body a:hover{color:var(--c-primary-d);}
.post-body table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15px;line-height:1.7;}
.post-body th,.post-body td{border:1px solid var(--c-line);padding:12px;text-align:left;vertical-align:top;}
.post-body th{background:#FAF8F5;color:var(--c-ink);font-weight:600;}
.post-body hr{border:0;border-top:1px solid var(--c-line);margin:2.4em 0;}
.post-body code{background:rgba(20,25,28,.06);padding:2px 6px;border-radius:5px;font-size:14.5px;}

/* ---------- 空态 ---------- */
.empty-state{max-width:640px;margin:20px auto 0;padding:44px 28px;background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);text-align:center;}
.empty-state h2{font-size:23px;margin-bottom:12px;}
.empty-state p{font-size:15px;line-height:1.8;color:var(--c-muted);margin-bottom:22px;}

/* ---------- 标签行 ---------- */
.post-tags{max-width:760px;margin:44px auto 0;padding-top:24px;border-top:1px solid var(--c-line);display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.post-tags .tk{font-size:13px;color:var(--c-muted);margin-right:4px;}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;border:1px solid var(--c-line);background:var(--c-card);font-size:13px;color:var(--c-ink-2);transition:border-color var(--ease),color var(--ease),transform var(--ease);}
.tag:hover{border-color:rgba(242,92,5,.45);color:var(--c-primary);transform:translateY(-1px);}

/* ---------- 相关推荐 ---------- */
.related{margin-top:78px;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px;}
.sec-h2{position:relative;font-size:30px;line-height:1.3;padding-left:15px;}
.sec-h2::before{content:"";position:absolute;left:0;top:.28em;width:3px;height:24px;background:var(--c-primary);border-radius:2px;}
.sec-more{font-size:14px;color:var(--c-muted);white-space:nowrap;transition:color var(--ease);}
.sec-more:hover{color:var(--c-primary);}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rel-card{display:flex;flex-direction:column;background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(242,92,5,.3);}
.rel-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:#EDE9E2;}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease-out;}
.rel-card:hover .rel-thumb img{transform:scale(1.04);}
.rel-thumb .pill{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.92);}
.rel-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.rel-body h3{font-size:18px;line-height:1.5;margin-bottom:10px;}
.rel-card:hover .rel-body h3{color:var(--c-primary);}
.rel-body p{font-size:14px;line-height:1.75;color:var(--c-muted);margin-bottom:16px;}
.rel-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-muted);padding-top:14px;border-top:1px solid var(--c-line);}
@media (max-width:1024px){.rel-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:640px){.rel-grid{grid-template-columns:1fr;}.sec-h2{font-size:23px;}}

/* ---------- 返回 ---------- */
.back-wrap{margin-top:56px;}

/* ---------- 页脚 ---------- */
.site-foot{background:var(--c-ink);color:#B9C0C5;padding-top:64px;margin-top:96px;}
.foot-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.25fr;gap:32px;padding-bottom:48px;}
.foot-brand p{font-size:14px;line-height:1.85;color:#8D9599;margin-top:16px;max-width:330px;}
.logo-light{color:#fff;font-size:18px;}
.foot-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.foot-col ul li{margin-bottom:11px;font-size:14px;color:#8D9599;line-height:1.7;}
.foot-col ul li a{color:#B9C0C5;transition:color var(--ease),text-underline-offset var(--ease);}
.foot-col ul li a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.foot-grid .foot-col{border-left:1px solid rgba(255,255,255,.08);padding-left:32px;}
.foot-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;padding-top:22px;padding-bottom:28px;border-top:1px solid rgba(255,255,255,.08);font-size:13px;color:#7A8286;}
@media (max-width:1024px){
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .foot-grid .foot-col{border-left:0;padding-left:0;}
}
@media (max-width:640px){
  .site-foot{padding-top:48px;margin-top:64px;}
  .foot-grid{grid-template-columns:1fr;gap:26px;padding-bottom:32px;}
  .foot-bottom{justify-content:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category1 */
:root{
  --c-primary:#F25C05;
  --c-primary-d:#C94A03;
  --c-ink:#14191C;
  --c-ink-2:#3A4247;
  --c-accent:#17A98C;
  --c-bg:#F5F3EF;
  --c-card:#FFFFFF;
  --c-line:#E4DFD7;
  --c-muted:#767F84;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(20,25,28,.05);
  --sh-2:0 12px 28px -14px rgba(20,25,28,.22);
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0}
a:focus-visible,button:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 32px}

/* ---------- 顶部导航 ---------- */
.site-head{
  position:sticky;top:0;z-index:60;
  background:rgba(245,243,239,.93);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
}
.head-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:72px;transition:height .25s ease-out;
}
.site-head.shrunk .head-inner{height:64px}
.logo{font-size:19px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.logo-em{color:var(--c-primary)}
.nav-main{display:flex;align-items:center;gap:34px}
.nav-a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;font-weight:500;color:var(--c-ink-2);
  transition:color .18s ease-out;
}
.nav-a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--c-primary);border-radius:2px;transform:scaleX(0);
  transform-origin:left center;transition:transform .18s ease-out;
}
.nav-a:hover{color:var(--c-ink)}
.nav-a.active{color:var(--c-ink);font-weight:600}
.nav-a.active::after{transform:scaleX(1)}
.head-right{display:flex;align-items:center;gap:14px}
.burger{
  display:none;width:40px;height:40px;border:1px solid var(--c-line);background:transparent;
  border-radius:10px;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  transition:border-color .18s ease-out,background .18s ease-out;
}
.burger:hover{border-color:rgba(242,92,5,.45);background:#fff}
.burger span{display:block;width:22px;height:1.5px;background:var(--c-ink);border-radius:2px;transition:transform .2s ease-out}
.burger[aria-expanded="true"] span:first-child{transform:translateY(3.25px) rotate(45deg)}
.burger[aria-expanded="true"] span:last-child{transform:translateY(-3.25px) rotate(-45deg)}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);z-index:90;
  background:var(--c-bg);border-left:1px solid var(--c-line);
  transform:translateX(100%);transition:transform .3s ease-out;
  display:flex;flex-direction:column;padding:20px 22px 28px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--c-line)}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--c-line);background:#fff;
  cursor:pointer;font-size:16px;line-height:1;
}
.drawer-nav{display:flex;flex-direction:column;margin-top:8px}
.drawer-nav a{
  font-size:20px;line-height:1.6;padding:16px 0;border-bottom:1px solid var(--c-line);
  color:var(--c-ink-2);transition:color .18s ease-out;
}
.drawer-nav a.active{color:var(--c-primary);font-weight:600}
.drawer-nav a:hover{color:var(--c-ink)}
.drawer-cta{margin-top:26px;width:100%}
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,25,28,.4);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .3s ease-out,visibility .3s ease-out;
}
.drawer-mask.open{opacity:1;visibility:visible}
body.locked{overflow:hidden}

/* ---------- 按钮与标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-d);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{border-color:rgba(20,25,28,.28);color:var(--c-ink);background:transparent}
.btn-ghost:hover{border-color:var(--c-ink);transform:translateY(-1px)}
.btn-ghost:active{transform:scale(.98)}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:rgba(242,92,5,.08);color:var(--c-primary);
  font-size:12.5px;font-weight:600;letter-spacing:.01em;
}
.tag-accent{background:rgba(23,169,140,.1);color:var(--c-accent)}

/* ---------- 面包屑 ---------- */
.crumb{font-size:13px;color:var(--c-muted);margin-bottom:16px}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:rgba(118,127,132,.6)}
.crumb a{color:var(--c-muted);transition:color .18s ease-out}
.crumb a:hover{color:var(--c-primary)}
.crumb [aria-current="page"]{color:var(--c-ink-2)}

/* ---------- 分类页窄幅 Hero ---------- */
.cat-hero{
  border-bottom:1px solid var(--c-line);
  background:linear-gradient(180deg,#FBFAF7 0%,var(--c-bg) 100%);
  position:relative;overflow:hidden;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(242,92,5,.05) 0 1px,transparent 1px 14px);
  opacity:.5;
}
.cat-hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.18fr .82fr;gap:48px;align-items:center;
  min-height:272px;padding-top:34px;padding-bottom:34px;
}
.cat-hero h1{font-size:clamp(28px,3.2vw,38px);line-height:1.28;letter-spacing:-.01em}
.cat-lead{
  margin-top:16px;max-width:640px;font-size:16px;line-height:1.85;color:var(--c-ink-2);
}
.cat-hero-media{
  position:relative;border-radius:var(--r-img);overflow:hidden;
  height:206px;background:#EDE9E2;border:1px solid var(--c-line);
}
.cat-hero-media img{width:100%;height:100%;object-fit:cover}
.cat-hero-media::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:52%;
  background:linear-gradient(180deg,rgba(20,25,28,0) 0%,rgba(20,25,28,.42) 100%);
}

/* ---------- 通用板块 ---------- */
.sec{padding:92px 0}
.sec-tight{padding-top:0}
.sec-head{margin-bottom:36px}
.sec-head h2{position:relative;padding-left:16px;font-size:32px;line-height:1.32}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.3em;width:3px;height:22px;
  background:var(--c-primary);border-radius:2px;
}
.sec-head p{margin:14px 0 0 16px;max-width:640px;font-size:15.5px;line-height:1.85;color:var(--c-ink-2)}

/* ---------- 指标带 ---------- */
.metrics{border-bottom:1px solid var(--c-line)}
.metrics-inner{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  padding:34px 0;
}
.metric{padding-left:16px;border-left:1px solid var(--c-line)}
.metric:first-child{border-left:0;padding-left:0}
.metric strong{
  display:block;font-size:25px;line-height:1.25;font-weight:700;letter-spacing:-.01em;
}
.metric span{display:block;margin-top:6px;font-size:13px;line-height:1.6;color:var(--c-muted)}

/* ---------- 错位卡片网格 ---------- */
.stagger{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.stagger-col{display:flex;flex-direction:column;gap:24px}
.stagger-col.is-right{padding-top:40px}
.card{
  display:block;background:var(--c-card);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1);
  transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.card:hover{transform:translateY(-2px);border-color:rgba(242,92,5,.35);box-shadow:var(--sh-2)}
.card-media{
  border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/10;background:#EDE9E2;
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.card:hover .card-media img{transform:scale(1.03)}
.card h3{font-size:20px;line-height:1.45;margin:16px 0 8px}
.card p{
  font-size:14.5px;line-height:1.78;color:var(--c-ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:18px;padding-top:14px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-muted);
}
.card-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--c-primary);
}
.card-arrow::after{content:"→";transition:transform .18s ease-out}
.card:hover .card-arrow::after{transform:translateX(3px)}

/* ---------- 流程 ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.flow-item{padding-top:22px;border-top:2px solid var(--c-line);transition:border-color .18s ease-out}
.flow-item:hover{border-top-color:var(--c-primary)}
.flow-num{
  font-size:13px;font-weight:700;color:var(--c-primary);letter-spacing:.08em;
}
.flow-item h3{font-size:17.5px;line-height:1.5;margin:10px 0 8px}
.flow-item p{font-size:14.5px;line-height:1.8;color:var(--c-ink-2)}

/* ---------- 深色规格面板 ---------- */
.panel-dark{
  background:var(--c-ink);color:#fff;border-radius:16px;padding:44px;
  position:relative;overflow:hidden;
}
.panel-dark::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(242,92,5,.22) 0%,rgba(242,92,5,0) 68%);
  pointer-events:none;
}
.panel-dark h2{font-size:30px;line-height:1.32}
.panel-dark .panel-desc{margin-top:14px;max-width:640px;font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.72)}
.spec-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:36px;
  background:rgba(255,255,255,.12);border-radius:12px;overflow:hidden;
}
.spec{background:var(--c-ink);padding:24px 22px}
.spec span{display:block;font-size:13px;color:rgba(255,255,255,.55);letter-spacing:.02em}
.spec strong{display:block;margin-top:10px;font-size:17px;line-height:1.6;font-weight:600;color:#fff}
.spec .dot{
  display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--c-accent);
  margin-right:7px;vertical-align:middle;
}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:transparent;border:0;padding:22px 0;text-align:left;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.6;
  transition:color .18s ease-out;
}
.faq-q:hover{color:var(--c-primary)}
.faq-ico{
  position:relative;flex:0 0 auto;width:18px;height:18px;
  transition:transform .22s ease-out;
}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);border-radius:2px;
}
.faq-ico::before{width:14px;height:1.8px;transform:translate(-50%,-50%)}
.faq-ico::after{width:1.8px;height:14px;transform:translate(-50%,-50%)}
.faq-item.open .faq-ico{transform:rotate(135deg)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .28s ease-out}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a>div{overflow:hidden}
.faq-a p{
  margin:0 0 22px;max-width:760px;font-size:15px;line-height:1.85;color:var(--c-ink-2);
}

/* ---------- CTA 带 ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  background:var(--c-ink);color:#fff;border-radius:16px;padding:44px;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;left:-60px;bottom:-120px;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(242,92,5,.25) 0%,rgba(242,92,5,0) 70%);
  pointer-events:none;
}
.cta-band h2{position:relative;font-size:26px;line-height:1.4}
.cta-band p{position:relative;margin-top:12px;max-width:560px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.72)}
.cta-actions{position:relative;display:flex;gap:12px;flex:0 0 auto}
.btn-outline-light{border-color:rgba(255,255,255,.34);color:#fff;background:transparent}
.btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.08);transform:translateY(-1px)}

/* ---------- 页脚 ---------- */
.site-foot{margin-top:96px;background:var(--c-ink);color:#fff;padding-top:64px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:48px}
.logo-light{color:#fff}
.foot-brand p{margin-top:14px;max-width:340px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.66)}
.foot-col h4{font-size:15px;font-weight:600;margin-bottom:16px;color:#fff}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col li,.foot-col a{font-size:14px;line-height:1.7;color:rgba(255,255,255,.68);transition:color .18s ease-out}
.foot-col a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
.foot-bottom{
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;
  padding-top:22px;padding-bottom:26px;border-top:1px solid rgba(255,255,255,.12);
}
.foot-bottom p{font-size:13px;color:rgba(255,255,255,.5)}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .wrap{padding:0 24px}
  .nav-main{display:none}
  .burger{display:inline-flex}
  .head-right .btn-sm{display:none}
  .cat-hero-inner{grid-template-columns:1fr;gap:26px;min-height:0;padding-top:30px;padding-bottom:32px}
  .cat-hero-media{height:190px}
  .sec{padding:68px 0}
  .sec-head h2{font-size:27px}
  .metrics-inner{grid-template-columns:1fr 1fr;gap:20px}
  .metric:nth-child(3){border-left:0;padding-left:0}
  .metric:nth-child(4){border-left:1px solid var(--c-line);padding-left:16px}
  .stagger{grid-template-columns:1fr 1fr}
  .stagger-col.is-right{padding-top:28px}
  .flow-grid{grid-template-columns:1fr 1fr;gap:20px}
  .panel-dark{padding:36px 30px}
  .spec-grid{grid-template-columns:1fr 1fr}
  .cta-band{padding:36px 30px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:30px}
  .site-foot{margin-top:72px}
}
@media (max-width:640px){
  .wrap{padding:0 20px}
  .head-inner{height:64px}
  .logo{font-size:17.5px}
  .cat-hero h1{font-size:27px}
  .cat-lead{font-size:15px}
  .cat-hero-media{height:160px}
  .sec{padding:52px 0}
  .sec-head h2{font-size:23px}
  .sec-head p{margin-left:0;padding-left:0;font-size:15px}
  .sec-head h2{padding-left:14px}
  .metrics-inner{grid-template-columns:1fr 1fr;gap:18px;padding:26px 0}
  .metric strong{font-size:21px}
  .metric{padding-left:12px}
  .metric:nth-child(4){padding-left:12px}
  .stagger{grid-template-columns:1fr}
  .stagger-col.is-right{padding-top:0}
  .flow-grid{grid-template-columns:1fr}
  .panel-dark{padding:28px 20px;border-radius:14px}
  .panel-dark h2{font-size:23px}
  .spec-grid{grid-template-columns:1fr;margin-top:26px}
  .faq-q{font-size:15.5px;padding:18px 0}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 22px;border-radius:14px}
  .cta-band h2{font-size:22px}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
  .site-foot{margin-top:60px;padding-top:48px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --c-primary:#F25C05;
  --c-primary-d:#C94A03;
  --c-ink:#14191C;
  --c-ink-2:#3A4247;
  --c-accent:#17A98C;
  --c-bg:#F5F3EF;
  --c-card:#FFFFFF;
  --c-line:#E4DFD7;
  --c-muted:#767F84;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(20,25,28,.05);
  --sh-2:0 12px 28px -14px rgba(20,25,28,.22);
  --ff:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink-2);
  font-family:var(--ff);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:640px){.wrap{padding-left:24px;padding-right:24px}}
@media(min-width:1024px){.wrap{padding-left:32px;padding-right:32px}}

/* ---------- 导航 ---------- */
.site-head{
  position:sticky;top:0;z-index:60;
  background:rgba(245,243,239,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
}
.head-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;height:72px;transition:height .18s ease-out;
}
body.scrolled .head-inner{height:64px}
.logo{
  font-size:19px;font-weight:700;color:var(--c-ink);
  letter-spacing:-.01em;white-space:nowrap;
}
.logo-em{color:var(--c-primary)}
.logo-light{color:#fff}
.nav-main{display:none}
@media(min-width:1024px){
  .nav-main{display:flex;align-items:center;gap:32px}
}
.nav-a{
  position:relative;font-size:15px;font-weight:500;color:var(--c-ink-2);
  padding:6px 0;transition:color .18s ease-out;white-space:nowrap;
}
.nav-a:hover{color:var(--c-ink)}
.nav-a.active{color:var(--c-ink);font-weight:600}
.nav-a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.head-right{display:flex;align-items:center;gap:14px}
.btn-head{
  display:none;align-items:center;justify-content:center;
  height:38px;padding:0 18px;border-radius:var(--r-btn);
  background:var(--c-primary);color:#fff;font-size:14px;font-weight:600;
  transition:background .18s ease-out,transform .18s ease-out;
}
.btn-head:hover{background:var(--c-primary-d);transform:translateY(-1px)}
@media(min-width:640px){.btn-head{display:inline-flex}}
.burger{
  width:40px;height:40px;border:1px solid var(--c-line);border-radius:10px;
  background:var(--c-card);display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
@media(min-width:1024px){.burger{display:none}}
.burger span{display:block;width:22px;height:1.5px;background:var(--c-ink);border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out}
body.drawer-open .burger span:nth-child(1){transform:translateY(3.25px) rotate(45deg)}
body.drawer-open .burger span:nth-child(2){transform:translateY(-3.25px) rotate(-45deg)}

.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(360px,86vw);z-index:70;
  background:var(--c-bg);border-left:1px solid var(--c-line);
  transform:translateX(100%);transition:transform .26s ease-out;
  display:flex;flex-direction:column;padding:88px 24px 32px;
  overflow-y:auto;
}
body.drawer-open .drawer{transform:translateX(0)}
.drawer a.drawer-link{
  font-size:20px;color:var(--c-ink);padding:18px 2px;
  border-bottom:1px solid var(--c-line);display:block;
}
.drawer a.drawer-link.active{color:var(--c-primary);font-weight:600}
.drawer .btn{margin-top:28px}
.scrim{
  position:fixed;inset:0;background:rgba(20,25,28,.42);z-index:65;
  opacity:0;visibility:hidden;transition:opacity .24s ease-out,visibility .24s ease-out;
}
body.drawer-open .scrim{opacity:1;visibility:visible}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-d);transform:translateY(-1px)}
.btn-primary:active{transform:scale(.98)}
.btn-outline{border-color:rgba(20,25,28,.8);color:var(--c-ink);background:transparent}
.btn-outline:hover{border-color:var(--c-ink);background:rgba(20,25,28,.05)}
.btn-outline:active{transform:scale(.98)}
.btn-sm{height:42px;font-size:14px;padding:0 18px}
.btn-ghost{
  display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);
  font-size:14px;font-weight:600;height:42px;padding:0;
}
.btn-ghost:hover{color:var(--c-primary-d)}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:500;color:var(--c-primary);
  background:rgba(242,92,5,.08);border-radius:999px;padding:4px 11px;line-height:1.5;
}
.chip-plain{color:var(--c-ink-2);background:rgba(20,25,28,.05)}
.dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);display:inline-block;flex:0 0 6px}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--c-muted);padding:24px 0 0;
}
.crumb a{color:var(--c-muted);transition:color .18s ease-out}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:var(--c-primary)}
.crumb .now{color:var(--c-ink-2)}

/* ---------- 分类页两栏骨架 ---------- */
.cat-layout{
  display:grid;grid-template-columns:1fr;gap:36px;
  padding:28px 0 64px;
}
@media(min-width:1024px){
  .cat-layout{grid-template-columns:260px minmax(0,1fr);gap:56px;padding:36px 0 96px}
}
.cat-side{min-width:0}
@media(min-width:1024px){
  .cat-side{position:sticky;top:88px;align-self:start}
}
.side-h1{
  font-size:24px;line-height:1.4;letter-spacing:-.01em;
}
@media(min-width:1024px){.side-h1{font-size:26px}}
.side-lead{
  font-size:14px;line-height:1.75;color:var(--c-muted);margin-top:12px;max-width:44ch;
}
.side-nav{
  display:flex;gap:6px;overflow-x:auto;margin-top:22px;padding-bottom:4px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.side-nav::-webkit-scrollbar{display:none}
.side-nav a{
  flex:0 0 auto;font-size:14px;color:var(--c-ink-2);
  padding:8px 14px;border:1px solid var(--c-line);border-radius:999px;
  background:var(--c-card);transition:all .18s ease-out;white-space:nowrap;
}
.side-nav a:hover{border-color:rgba(242,92,5,.45);color:var(--c-ink)}
.side-nav a.on{color:var(--c-primary);border-color:rgba(242,92,5,.45);font-weight:600;background:rgba(242,92,5,.06)}
@media(min-width:1024px){
  .side-nav{display:block;overflow:visible;margin-top:24px}
  .side-nav a{
    display:block;border:0;border-radius:0;background:transparent;
    border-left:2px solid transparent;padding:9px 0 9px 14px;font-size:14.5px;
  }
  .side-nav a:hover{background:transparent;color:var(--c-ink)}
  .side-nav a.on{
    background:transparent;border-left-color:var(--c-primary);font-weight:700;color:var(--c-ink);
  }
}
.side-line{height:1px;background:var(--c-line);margin:24px 0}
.side-note{font-size:13px;line-height:1.7;color:var(--c-muted);margin-bottom:18px}

/* ---------- 主内容 ---------- */
.cat-main{min-width:0}
.lead-figure{
  border-radius:var(--r-card);overflow:hidden;position:relative;
  border:1px solid var(--c-line);background:#e9e5de;
}
.lead-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/9}
.lead-figure::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:46%;
  background:linear-gradient(180deg,rgba(20,25,28,0) 0%,rgba(20,25,28,.55) 100%);
}
.lead-cap{
  position:absolute;left:20px;right:20px;bottom:16px;z-index:2;
  color:#fff;font-size:14px;line-height:1.7;font-weight:500;
}
.lead-text{margin-top:26px;font-size:16px;line-height:1.85;color:var(--c-ink-2);max-width:44ch}
@media(min-width:768px){.lead-text{max-width:none;max-width:70ch}}
.metrics{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 24px;
  margin-top:30px;padding-top:26px;border-top:1px solid var(--c-line);
}
@media(min-width:768px){.metrics{grid-template-columns:repeat(4,minmax(0,1fr))}}
.metric-num{
  font-size:23px;font-weight:700;color:var(--c-ink);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
@media(min-width:1024px){.metric-num{font-size:25px}}
.metric-label{font-size:13px;color:var(--c-muted);margin-top:6px;line-height:1.6}

.sec{margin-top:64px;scroll-margin-top:96px}
@media(min-width:1024px){.sec{margin-top:88px}}
.sec-head{margin-bottom:26px}
.sec-title{
  font-size:23px;line-height:1.35;padding-left:13px;position:relative;
}
.sec-title::before{
  content:"";position:absolute;left:0;top:6px;width:3px;height:22px;
  background:var(--c-primary);border-radius:2px;
}
@media(min-width:1024px){.sec-title{font-size:30px}}
.sec-sub{font-size:14.5px;color:var(--c-muted);margin-top:12px;max-width:62ch;line-height:1.8;padding-left:13px}

/* 横向长列表 */
.row-list{border-top:1px solid var(--c-line)}
.row-card{
  display:grid;grid-template-columns:1fr;gap:14px;
  padding:20px 12px;border-bottom:1px solid var(--c-line);
  transition:background .18s ease-out,transform .18s ease-out;
  border-radius:6px;
}
@media(min-width:768px){
  .row-card{grid-template-columns:200px minmax(0,1fr);gap:24px;align-items:center;padding:22px 14px}
}
.row-card:hover{background:rgba(242,92,5,.035);transform:translateX(4px)}
.row-thumb{
  border-radius:var(--r-img);overflow:hidden;background:#e9e5de;aspect-ratio:16/10;
}
.row-thumb img{width:100%;height:100%;object-fit:cover}
.row-title{font-size:19px;line-height:1.45}
@media(min-width:1024px){.row-title{font-size:20px}}
.row-desc{font-size:14.5px;line-height:1.8;color:var(--c-ink-2);margin-top:10px;max-width:64ch}
.row-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--c-muted);margin-top:14px;
  font-variant-numeric:tabular-nums;
}
.row-meta .sep{color:var(--c-line)}

/* 适用场景 */
.scene-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:768px){.scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.scene-card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);transition:border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
}
.scene-card:hover{border-color:rgba(242,92,5,.3);box-shadow:var(--sh-2);transform:translateY(-2px)}
@media(min-width:768px){.scene-card.wide{grid-column:span 2;display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:26px;align-items:center}}
.scene-card h3{font-size:18px;line-height:1.5}
.scene-card p{font-size:14.5px;line-height:1.8;color:var(--c-ink-2);margin-top:10px;max-width:60ch}
.scene-card .scene-img{border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/10;background:#e9e5de;margin-top:18px}
@media(min-width:768px){.scene-card.wide .scene-img{margin-top:0}}
.scene-card .scene-img img{width:100%;height:100%;object-fit:cover}

/* 流程 */
.flow{display:grid;grid-template-columns:1fr;gap:18px}
@media(min-width:640px){.flow{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.flow{grid-template-columns:repeat(4,minmax(0,1fr))}}
.flow-item{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px;position:relative;transition:border-color .18s ease-out,transform .18s ease-out;
}
.flow-item:hover{border-color:rgba(242,92,5,.3);transform:translateY(-2px)}
.flow-num{
  font-size:13px;font-weight:700;color:var(--c-primary);
  letter-spacing:.08em;font-variant-numeric:tabular-nums;
}
.flow-item h3{font-size:17px;margin-top:12px;line-height:1.5}
.flow-item p{font-size:14px;line-height:1.8;color:var(--c-muted);margin-top:10px}

/* 深色数据面板 */
.hud{
  background:var(--c-ink);border-radius:16px;padding:30px 24px;color:#fff;
}
@media(min-width:768px){.hud{padding:38px 34px}}
.hud-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:12px}
.hud-head h3{color:#fff;font-size:20px;line-height:1.4}
.hud-head span{font-size:13px;color:rgba(255,255,255,.55)}
.hud-grid{
  display:grid;grid-template-columns:1fr;gap:22px;margin-top:26px;
}
@media(min-width:640px){.hud-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.hud-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.hud-item{border-left:1px solid rgba(255,255,255,.14);padding-left:18px}
@media(max-width:639px){.hud-item{border-left:0;padding-left:0;border-top:1px solid rgba(255,255,255,.14);padding-top:16px}}
.hud-item:first-child{border-top:0;padding-top:0}
.hud-num{
  font-size:24px;font-weight:700;color:#fff;font-variant-numeric:tabular-nums;line-height:1.2;
}
.hud-num em{font-style:normal;font-size:14px;font-weight:500;color:rgba(255,255,255,.62);margin-left:4px}
.hud-label{font-size:13px;color:rgba(255,255,255,.6);margin-top:8px;line-height:1.7}

/* 提示带 */
.tip-band{
  margin-top:56px;background:rgba(242,92,5,.06);
  border-left:3px solid var(--c-primary);border-radius:0 12px 12px 0;
  padding:22px 24px;
}
@media(min-width:1024px){.tip-band{margin-top:72px}}
.tip-band h3{font-size:17px;line-height:1.5}
.tip-band p{font-size:14.5px;line-height:1.85;color:var(--c-ink-2);margin-top:10px;max-width:70ch}

/* FAQ */
.faq{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  background:none;border:0;padding:20px 2px;text-align:left;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.6;
  transition:color .18s ease-out;
}
.faq-q:hover{color:var(--c-primary-d)}
.faq-icon{
  position:relative;flex:0 0 18px;width:18px;height:18px;margin-top:4px;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);
  transform:translate(-50%,-50%);border-radius:2px;
}
.faq-icon::before{width:14px;height:1.5px}
.faq-icon::after{width:1.5px;height:14px;transition:transform .22s ease-out,opacity .22s ease-out}
.faq-item.open .faq-icon::after{opacity:0;transform:translate(-50%,-50%) rotate(90deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease-out}
.faq-a p{
  font-size:15px;line-height:1.85;color:var(--c-muted);
  padding:0 34px 22px 2px;max-width:72ch;
}

/* CTA */
.cta-band{
  margin-top:64px;background:var(--c-ink);border-radius:16px;
  padding:34px 24px;display:grid;gap:24px;
}
@media(min-width:768px){
  .cta-band{grid-template-columns:minmax(0,1fr) auto;align-items:center;padding:40px 38px;margin-top:88px}
}
.cta-band h2{color:#fff;font-size:23px;line-height:1.4}
@media(min-width:1024px){.cta-band h2{font-size:27px}}
.cta-band p{color:rgba(255,255,255,.66);font-size:15px;line-height:1.8;margin-top:12px;max-width:56ch}
.cta-actions{display:flex;flex-direction:column;gap:12px}
@media(min-width:520px){.cta-actions{flex-direction:row}}
.cta-band .btn-outline{border-color:rgba(255,255,255,.35);color:#fff}
.cta-band .btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.08)}

/* 页脚 */
.site-foot{background:var(--c-ink);color:rgba(255,255,255,.72);margin-top:80px}
@media(min-width:1024px){.site-foot{margin-top:104px}}
.foot-grid{
  display:grid;grid-template-columns:1fr;gap:32px;
  padding-top:56px;padding-bottom:36px;
}
@media(min-width:640px){.foot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.foot-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-top:64px}}
.foot-brand .logo{font-size:19px}
.foot-brand p{
  font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);
  margin-top:14px;max-width:38ch;
}
.foot-col h4{font-size:14px;color:#fff;font-weight:600;margin-bottom:16px}
.foot-col ul{display:grid;gap:11px}
.foot-col li,.foot-col a{font-size:14px;line-height:1.7;color:rgba(255,255,255,.68)}
.foot-col a{transition:color .18s ease-out}
.foot-col a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding-top:20px;padding-bottom:28px;
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

@media(prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}
html{scroll-behavior:smooth}