/* roulang page: index */
:root{
  --c-primary:#2B6CE6;
  --c-primary-deep:#1E56C4;
  --c-primary-light:#EAF1FE;
  --c-primary-line:#C9DBFB;
  --c-accent:#F2683C;
  --c-accent-light:#FDEEE8;
  --c-teal:#12A08A;
  --c-teal-light:#E6F6F3;
  --c-ink:#0E1E33;
  --c-text:#55657C;
  --c-weak:#8A99AE;
  --c-bg:#F4F7FC;
  --c-card:#FFFFFF;
  --c-alt:#EEF3FA;
  --c-line:#E4EBF4;
  --c-hair:rgba(14,30,51,.05);
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --r-band:20px;
  --sh-1:0 2px 8px rgba(14,30,51,.05);
  --sh-2:0 8px 24px rgba(14,30,51,.08);
  --sh-hover:0 14px 32px rgba(43,108,230,.14);
  --sp:80px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,ul,ol{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;object-fit:cover;border:1px solid var(--c-hair);background:var(--c-alt);}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
button{border:none;background:none;cursor:pointer;}
h1,h2,h3{color:var(--c-ink);line-height:1.3;}
.tnum{font-variant-numeric:tabular-nums;}
.container{max-width:1240px;margin:0 auto;padding:0 24px;}
.section{padding:var(--sp) 0;}
.section-alt{background:var(--c-alt);}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap;}
.sec-title{font-size:25px;font-weight:600;letter-spacing:-.01em;}
.sec-sub{font-size:16px;color:var(--c-text);margin-top:8px;}
.sec-title::before{content:"";display:inline-block;width:6px;height:20px;border-radius:3px;background:var(--c-primary);margin-right:12px;vertical-align:-2px;}

/* 导航 */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--c-line);transition:box-shadow .2s ease;}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.nav-inner{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:center;height:64px;}
.nav-left{grid-column:1 / span 8;display:flex;align-items:center;gap:30px;min-width:0;}
.nav-right{grid-column:9 / span 4;display:flex;align-items:center;justify-content:flex-end;gap:12px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{width:20px;height:20px;border-radius:6px;background:linear-gradient(135deg,var(--c-primary),var(--c-teal));flex-shrink:0;}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.2px;color:var(--c-ink);white-space:nowrap;}
.logo-text em{font-style:normal;color:var(--c-primary);}
.nav-links{display:flex;align-items:center;gap:22px;min-width:0;}
.nav-links a{position:relative;font-size:15px;font-weight:500;color:var(--c-text);padding:20px 0;white-space:nowrap;transition:color .2s ease;}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;border-radius:2px;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;}
.nav-links a:hover{color:var(--c-primary);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--c-primary);}
.nav-links a.active::after{transform:scaleX(1);}
.icon-btn{width:36px;height:36px;border-radius:50%;border:1px solid var(--c-line);display:inline-flex;align-items:center;justify-content:center;color:var(--c-ink);transition:background .2s ease,color .2s ease,border-color .2s ease;}
.icon-btn:hover{background:var(--c-primary-light);color:var(--c-primary);border-color:var(--c-primary-line);}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:500;border:1px solid transparent;transition:transform .2s ease,background .2s ease,box-shadow .2s ease,color .2s ease,border-color .2s ease;}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;border-color:var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-light);}
.btn-light{background:#fff;border-color:var(--c-line);color:var(--c-ink);}
.btn-light:hover{border-color:var(--c-primary-line);background:var(--c-primary-light);color:var(--c-primary);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn:disabled,.btn[disabled]{background:#B7C2D2;border-color:#B7C2D2;color:#fff;opacity:.6;cursor:not-allowed;transform:none;box-shadow:none;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-size:15px;font-weight:500;}
.link-more span{transition:transform .2s ease;}
.link-more:hover span{transform:translateX(4px);}
.burger{display:none;width:36px;height:36px;border-radius:10px;border:1px solid var(--c-line);align-items:center;justify-content:center;}
.burger span{display:block;width:16px;height:2px;background:var(--c-ink);border-radius:2px;position:relative;}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--c-ink);border-radius:2px;}
.burger span::before{top:-5px;}
.burger span::after{top:5px;}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(14,30,51,.45);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:80;}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:380px;background:#fff;z-index:90;transform:translateX(100%);transition:transform .28s ease;display:flex;flex-direction:column;padding:20px;}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-title{font-size:15px;font-weight:600;color:var(--c-ink);}
.drawer-links a{display:flex;align-items:center;justify-content:space-between;height:52px;font-size:15px;color:var(--c-ink);border-bottom:1px solid var(--c-line);}
.drawer-links a.active{color:var(--c-primary);}
.drawer-search{margin-top:18px;}
.drawer-cta{margin-top:auto;}

/* Hero */
.hero{padding:56px 0 72px;}
.hero-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:center;}
.hero-copy{grid-column:1 / span 6;}
.hero-visual{grid-column:7 / span 6;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--c-primary-light);color:var(--c-primary);font-size:13px;font-weight:500;padding:5px 14px;border-radius:var(--r-pill);margin-bottom:20px;}
.hero h1{font-size:44px;font-weight:700;line-height:1.25;letter-spacing:-.01em;}
.hero-lead{font-size:17px;line-height:1.85;color:var(--c-text);margin-top:20px;max-width:560px;}
.hero-actions{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap;}
.hero-stats{display:flex;gap:44px;margin-top:38px;padding-top:26px;border-top:1px solid var(--c-line);flex-wrap:wrap;}
.stat-num{font-size:22px;font-weight:700;color:var(--c-ink);font-variant-numeric:tabular-nums;}
.stat-label{font-size:13px;color:var(--c-weak);margin-top:2px;}
.hero-media{position:relative;border-radius:var(--r-band);overflow:hidden;}
.hero-media img{width:100%;aspect-ratio:4/3;border-radius:var(--r-band);}
.hero-chip{position:absolute;right:16px;bottom:16px;background:#fff;border-radius:14px;box-shadow:var(--sh-2);padding:14px 16px;max-width:250px;display:flex;gap:12px;align-items:flex-start;}
.hero-chip-icon{width:28px;height:28px;border-radius:8px;background:var(--c-primary-light);color:var(--c-primary);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:14px;font-weight:700;}
.hero-chip-t{font-size:14px;font-weight:600;color:var(--c-ink);}
.hero-chip-d{font-size:12.5px;color:var(--c-text);line-height:1.6;margin-top:2px;}

/* 区块A 主题封面 */
.cover-band{position:relative;border-radius:var(--r-band);overflow:hidden;box-shadow:var(--sh-1);}
.cover-band img{width:100%;aspect-ratio:16/6;border:none;}
.cover-band-mask{position:absolute;inset:0;background:linear-gradient(90deg,rgba(14,30,51,.55) 0%,rgba(14,30,51,.28) 48%,rgba(14,30,51,0) 78%);}
.cover-band-text{position:absolute;left:36px;bottom:34px;right:36px;color:#fff;}
.cover-band-text h2{color:#fff;font-size:26px;font-weight:600;line-height:1.4;}
.cover-band-text p{color:rgba(255,255,255,.82);font-size:15px;margin-top:8px;max-width:620px;}
.cover-band-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;color:#fff;font-size:15px;font-weight:500;}
.cover-band-link span{transition:transform .2s ease;}
.cover-band-link:hover span{transform:translateX(4px);}

/* 区块B 目录 */
.cat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.cat-item{position:relative;display:flex;align-items:flex-start;gap:16px;background:#fff;border:1px solid var(--c-hair);border-radius:var(--r-card);padding:20px 22px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,background .2s ease;}
.cat-item::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:3px;background:var(--c-primary);transform:scaleY(0);transform-origin:top;transition:transform .2s ease;}
.cat-item:hover{background:var(--c-primary-light);box-shadow:var(--sh-2);transform:translateX(3px);}
.cat-item:hover::before{transform:scaleY(1);}
.cat-no{width:44px;height:44px;border-radius:12px;background:var(--c-teal-light);color:var(--c-teal);font-weight:700;font-size:15px;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-variant-numeric:tabular-nums;}
.cat-body h3{font-size:18px;font-weight:600;}
.cat-body p{font-size:14.5px;margin-top:6px;color:var(--c-text);}
.cat-arrow{margin-left:auto;color:var(--c-primary);font-size:18px;line-height:1;align-self:center;transition:transform .2s ease;}
.cat-item:hover .cat-arrow{transform:translateX(4px);}

/* 区块C 精选 */
.feature-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.feat-main{grid-column:1 / span 7;background:#fff;border:1px solid var(--c-hair);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease;}
.feat-main:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.feat-main-img{position:relative;overflow:hidden;}
.feat-main-img img{width:100%;aspect-ratio:16/9;border-radius:0;border:none;}
.feat-main-body{padding:24px 26px 26px;}
.feat-main-body h3{font-size:21px;font-weight:600;line-height:1.45;}
.feat-main-body p{font-size:15px;margin-top:12px;}
.feat-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-weak);margin-top:16px;font-variant-numeric:tabular-nums;}
.feat-side{grid-column:8 / span 5;display:flex;flex-direction:column;gap:20px;}
.feat-row{display:flex;gap:16px;background:#fff;border:1px solid var(--c-hair);border-radius:var(--r-card);padding:16px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease;align-items:center;}
.feat-row:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.feat-row img{width:120px;height:88px;border-radius:var(--r-img);flex-shrink:0;}
.feat-row h3{font-size:16.5px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.feat-row p{font-size:13.5px;color:var(--c-weak);margin-top:8px;font-variant-numeric:tabular-nums;}
.badge{display:inline-flex;align-items:center;font-size:12px;font-weight:500;padding:4px 10px;border-radius:var(--r-pill);line-height:1.5;}
.badge-cat{background:var(--c-teal-light);color:var(--c-teal);}
.badge-pick{background:var(--c-accent-light);color:var(--c-accent);}
.badge-time{background:var(--c-alt);color:var(--c-text);}
.badge-img{position:absolute;left:12px;top:12px;}

/* 区块D 推荐 */
.mini-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.mini-card{background:#fff;border:1px solid var(--c-hair);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease;}
.mini-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.mini-card-img{position:relative;overflow:hidden;}
.mini-card-img img{width:100%;aspect-ratio:16/10;border-radius:0;border:none;}
.mini-card-body{padding:16px 18px 20px;}
.mini-card-body h3{font-size:16px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:48px;}
.mini-card-body .badge{margin-top:12px;}

/* 区块E CTA条 */
.cta-band{background:var(--c-primary-light);border-radius:var(--r-band);padding:40px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-band h2{font-size:22px;font-weight:600;}
.cta-band p{font-size:14.5px;margin-top:8px;color:var(--c-text);}
.cta-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
.share-group{display:flex;gap:10px;}
.share-btn{width:36px;height:36px;border-radius:50%;border:1px solid var(--c-primary-line);background:#fff;color:var(--c-primary);display:inline-flex;align-items:center;justify-content:center;font-size:13px;font-weight:600;transition:background .2s ease,transform .2s ease;}
.share-btn:hover{background:var(--c-primary-light);transform:translateY(-1px);}

/* 区块F 资讯 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{position:relative;background:#fff;border:1px solid var(--c-hair);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease;display:flex;flex-direction:column;}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.news-card h3{font-size:18px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card p{font-size:14.5px;margin-top:12px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:20px;padding-top:16px;border-top:1px solid var(--c-line);}
.news-foot time{font-size:13px;color:var(--c-weak);font-variant-numeric:tabular-nums;}
.card-hit{position:absolute;inset:0;border-radius:var(--r-card);}
.empty-state{grid-column:1 / -1;border:1px dashed var(--c-primary-line);background:var(--c-bg);border-radius:var(--r-card);padding:56px 24px;text-align:center;}
.empty-icon{width:52px;height:52px;border-radius:50%;background:#fff;border:1px solid var(--c-line);color:var(--c-primary);display:flex;align-items:center;justify-content:center;margin:0 auto 18px;font-size:20px;}
.empty-state p{font-size:15px;color:var(--c-text);margin-bottom:20px;}

/* FAQ */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{background:#fff;border:1px solid var(--c-hair);border-radius:var(--r-card);margin-bottom:14px;overflow:hidden;box-shadow:var(--sh-1);transition:background .2s ease;}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 22px 20px 24px;font-size:17px;font-weight:600;color:var(--c-ink);border-left:3px solid transparent;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-size:20px;color:var(--c-primary);transition:transform .25s ease;flex-shrink:0;}
.faq-item[open]{background:var(--c-primary-light);}
.faq-item[open] summary{border-left-color:var(--c-primary);}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg);}
.faq-body{padding:0 24px 22px 24px;font-size:15px;line-height:1.85;color:var(--c-text);}
.faq-body p+p{margin-top:10px;}

/* 页脚前 CTA */
.pre-footer{background:#fff;border-top:1px solid var(--c-line);}
.pre-footer-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;padding:56px 0;}
.pre-footer h2{font-size:24px;font-weight:600;}
.pre-footer p{font-size:15px;margin-top:10px;max-width:640px;}

/* 页脚 */
.site-footer{background:var(--c-footer);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand .logo-text em{color:#7FB0FF;}
.footer-desc{font-size:14px;line-height:1.85;margin-top:16px;max-width:320px;}
.footer-col h3{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col a{display:block;font-size:14px;line-height:2.2;transition:color .2s ease,transform .2s ease;}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-note{font-size:13.5px;line-height:1.9;}
.footer-bottom{margin-top:48px;border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;font-size:13px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;}

@media (max-width:1023px){
  :root{--sp:56px;}
  .nav-inner{height:64px;}
  .nav-left{grid-column:1 / span 8;gap:20px;}
  .nav-links{display:none;}
  .nav-right{grid-column:9 / span 4;}
  .burger{display:inline-flex;}
  .hero h1{font-size:36px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-copy,.hero-visual{grid-column:1 / -1;}
  .hero-media img{aspect-ratio:16/9;}
  .feat-main,.feat-side{grid-column:1 / -1;}
  .mini-grid{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:16px;padding-bottom:8px;-webkit-overflow-scrolling:touch;}
  .mini-card{flex:0 0 78vw;scroll-snap-align:start;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:767px){
  :root{--sp:44px;}
  .container{padding:0 18px;}
  .nav-inner{height:56px;gap:16px;}
  .nav-left{grid-column:1 / span 9;gap:14px;}
  .nav-right{grid-column:10 / span 3;gap:8px;}
  .nav-right .btn-primary{display:none;}
  .logo-text{font-size:15.5px;}
  .hero{padding:36px 0 52px;}
  .hero h1{font-size:28px;line-height:1.32;}
  .hero-lead{font-size:16px;}
  .hero-stats{gap:28px;}
  .cat-grid{grid-template-columns:1fr;}
  .cover-band img{aspect-ratio:3/2;}
  .cover-band-text{left:20px;right:20px;bottom:22px;}
  .cover-band-text h2{font-size:20px;}
  .feat-row{flex-direction:row;}
  .feat-row img{width:96px;height:76px;}
  .news-grid{grid-template-columns:1fr;}
  .cta-band{padding:26px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .drawer{width:92vw;}
}
@media (max-width:480px){
  .hero-actions .btn{width:100%;}
  .hero-media img{aspect-ratio:4/3;}
  .hero-chip{left:14px;right:14px;bottom:14px;max-width:none;}
  .feat-main-body{padding:20px;}
  .feat-row img{width:84px;height:68px;}
}

/* roulang page: category1 */
:root{
  --c-primary:#2B6CE6;
  --c-primary-deep:#1E56C4;
  --c-primary-light:#EAF1FE;
  --c-primary-line:#C9DBFB;
  --c-accent:#F2683C;
  --c-accent-light:#FDEEE8;
  --c-teal:#12A08A;
  --c-teal-light:#E6F6F3;
  --t-main:#0E1E33;
  --t-sub:#55657C;
  --t-weak:#8A99AE;
  --bg-page:#F4F7FC;
  --bg-card:#FFFFFF;
  --bg-alt:#EEF3FA;
  --bg-foot:#0E1E33;
  --line:#E4EBF4;
  --line-soft:rgba(14,30,51,.05);
  --ok:#12A08A;
  --warn:#E5A100;
  --err:#D94A3D;
  --disabled:#B7C2D2;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-badge:999px;
  --r-strip:20px;
  --sh-1:0 2px 8px rgba(14,30,51,.05);
  --sh-2:0 8px 24px rgba(14,30,51,.08);
  --sh-hover:0 14px 32px rgba(43,108,230,.14);
  --sp-section:80px;
  --nav-h:64px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--t-main);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
h1{font-size:34px;font-weight:700;line-height:1.35;letter-spacing:-.01em;}
h2{font-size:25px;font-weight:600;line-height:1.4;}
h3{font-size:18px;font-weight:600;line-height:1.5;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.container{max-width:1240px;margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:var(--nav-h);gap:24px;
}
.nav-left{display:flex;align-items:center;gap:30px;min-width:0;}
.logo{display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:17px;letter-spacing:.01em;white-space:nowrap;}
.logo-mark{
  width:22px;height:22px;border-radius:7px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--c-primary) 0%,#3E8BF0 100%);
  position:relative;
}
.logo-mark::after{
  content:"";position:absolute;inset:5px;border-radius:3px;background:#fff;opacity:.9;
}
.logo-text{color:var(--t-main);}
.logo-text em{font-style:normal;color:var(--c-primary);}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  position:relative;display:block;padding:0 12px;height:var(--nav-h);line-height:var(--nav-h);
  font-size:15px;font-weight:500;color:var(--t-sub);transition:color .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:14px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-links a:hover{color:var(--c-primary);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--c-primary);}
.nav-links a.active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--t-sub);
  background:#fff;transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.icon-btn:hover{background:var(--c-primary-light);color:var(--c-primary);border-color:var(--c-primary-line);}
.icon-btn:active{transform:translateY(1px);}
.burger{
  display:none;width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  align-items:center;justify-content:center;
}
.burger span{display:block;width:16px;height:2px;background:var(--t-main);border-radius:2px;position:relative;transition:background .2s ease;}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--t-main);border-radius:2px;transition:transform .2s ease;
}
.burger span::before{top:-5px;}
.burger span::after{top:5px;}
.burger:hover{background:var(--c-primary-light);border-color:var(--c-primary-line);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:500;line-height:1;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 2px 8px rgba(43,108,230,.18);}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-1px);box-shadow:0 8px 20px rgba(43,108,230,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 6px rgba(43,108,230,.2);}
.btn-ghost{background:#fff;color:var(--c-primary);border:1px solid var(--c-primary-line);}
.btn-ghost:hover{background:var(--c-primary-light);border-color:var(--c-primary);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn:disabled{opacity:.6;cursor:not-allowed;background:var(--disabled);color:#fff;box-shadow:none;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-size:14px;font-weight:500;
}
.link-more svg{transition:transform .2s ease;}
.link-more:hover svg{transform:translateX(4px);}

/* ---------- mobile drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,30,51,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:80;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:380px;background:#fff;z-index:90;
  transform:translateX(100%);transition:transform .3s ease;display:flex;flex-direction:column;
  padding:20px 20px 28px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);}
.drawer-close{width:34px;height:34px;border-radius:50%;border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;color:var(--t-sub);}
.drawer-close:hover{background:var(--c-primary-light);color:var(--c-primary);}
.drawer-links{margin-top:6px;}
.drawer-links a{
  display:block;height:52px;line-height:52px;font-size:15px;color:var(--t-main);
  border-bottom:1px solid var(--line);transition:color .2s ease,padding-left .2s ease;
}
.drawer-links a:hover{color:var(--c-primary);padding-left:4px;}
.drawer-links a.active{color:var(--c-primary);font-weight:600;}
.drawer-search{margin-top:20px;}
.drawer-search label{display:block;font-size:13px;color:var(--t-sub);margin-bottom:8px;}
.field{
  width:100%;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-btn);
  font-size:15px;color:var(--t-main);background:#fff;transition:border-color .2s ease,box-shadow .2s ease;
}
.field::placeholder{color:var(--t-weak);}
.field:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px var(--c-primary-light);}
.drawer-cta{margin-top:18px;width:100%;}

/* ---------- breadcrumb ---------- */
.crumb{padding:20px 0 0;font-size:14px;color:var(--t-sub);}
.crumb a{color:var(--t-sub);transition:color .2s ease;}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{margin:0 8px;color:var(--t-weak);}
.crumb .current{color:var(--t-weak);}

/* ---------- page head ---------- */
.page-head{padding:26px 0 0;}
.page-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;border-radius:var(--r-badge);
  background:var(--c-teal-light);color:#0B7F6E;font-size:12px;font-weight:500;margin-bottom:16px;
}
.page-head h1{max-width:860px;}
.page-head .lead{
  margin-top:16px;max-width:760px;font-size:16px;line-height:1.85;color:var(--t-sub);
}
.page-meta{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:20px;
}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-badge);
  font-size:12px;font-weight:500;
}
.badge-teal{background:var(--c-teal-light);color:#0B7F6E;}
.badge-primary{background:var(--c-primary-light);color:var(--c-primary-deep);}
.badge-accent{background:var(--c-accent-light);color:#C4451F;}
.badge-muted{background:#EEF3FA;color:var(--t-sub);}

/* ---------- index layout ---------- */
.section{padding:44px 0 0;}
.section-last{padding-bottom:var(--sp-section);}
.index-grid{display:grid;grid-template-columns:260px 1fr;gap:32px;align-items:start;}

.toc-card{
  position:sticky;top:calc(var(--nav-h) + 24px);
  background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:20px 16px;
}
.toc-title{font-size:13px;color:var(--t-weak);letter-spacing:.06em;padding:0 8px 12px;border-bottom:1px solid var(--line);}
.toc-list{margin-top:8px;display:flex;flex-direction:column;}
.toc-list a{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:11px 10px;border-radius:10px;font-size:14px;color:var(--t-sub);
  transition:background .2s ease,color .2s ease,padding-left .2s ease;
}
.toc-list a .i{
  width:22px;height:22px;flex:0 0 auto;border-radius:7px;background:var(--c-teal-light);
  color:#0B7F6E;font-size:12px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.toc-list a::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:3px;
  background:var(--c-primary);opacity:0;transition:opacity .2s ease;
}
.toc-list a:hover{background:var(--c-primary-light);color:var(--c-primary-deep);}
.toc-list a.is-current{background:var(--c-primary-light);color:var(--c-primary-deep);font-weight:600;}
.toc-list a.is-current::before{opacity:1;}
.toc-tip{
  margin-top:16px;padding:12px;border-radius:12px;background:var(--bg-alt);
  font-size:13px;line-height:1.7;color:var(--t-sub);
}

.entry-panel{
  background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
}
.entry-panel-head{
  padding:22px 24px;border-bottom:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;align-items:baseline;justify-content:space-between;
}
.entry-panel-head h2{font-size:20px;}
.entry-panel-head span{font-size:13px;color:var(--t-weak);}
.entry-row{
  display:flex;align-items:center;gap:18px;padding:16px 24px;
  border-bottom:1px solid var(--line);
  transition:background .2s ease,transform .2s ease;
}
.entry-row:last-child{border-bottom:none;}
.entry-row:hover{background:var(--c-primary-light);transform:translateX(4px);}
.entry-row:active{transform:translateX(2px);}
.entry-num{
  flex:0 0 auto;width:38px;height:38px;border-radius:11px;background:var(--c-teal-light);color:#0B7F6E;
  font-size:14px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.entry-body{flex:1 1 auto;min-width:0;}
.entry-body h3{font-size:16px;font-weight:600;color:var(--t-main);}
.entry-body p{
  margin-top:4px;font-size:14px;line-height:1.7;color:var(--t-sub);
  overflow:hidden;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;
}
.entry-arrow{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--t-weak);
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.entry-row:hover .entry-arrow{background:#fff;color:var(--c-primary);border-color:var(--c-primary-line);transform:translateX(2px);}

/* ---------- highlight strip ---------- */
.highlight{
  margin-top:36px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
}
.hl-item{
  background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:22px;transition:box-shadow .2s ease,transform .2s ease;
}
.hl-item:hover{box-shadow:var(--sh-hover);transform:translateY(-3px);}
.hl-item .k{font-size:13px;color:var(--t-weak);}
.hl-item .v{font-size:22px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--t-main);margin-top:6px;}
.hl-item .d{font-size:14px;color:var(--t-sub);margin-top:6px;line-height:1.75;}

/* ---------- category pills ---------- */
.cat-pills{
  margin-top:44px;padding:24px;background:#fff;border:1px solid var(--line-soft);
  border-radius:var(--r-card);box-shadow:var(--sh-1);
}
.cat-pills h2{font-size:18px;}
.cat-pills p{font-size:14px;color:var(--t-sub);margin-top:6px;}
.pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;}
.pill{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:var(--r-badge);
  border:1px solid var(--c-primary-line);background:#fff;color:var(--c-primary);
  font-size:14px;font-weight:500;transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.pill:hover{background:var(--c-primary-light);transform:translateY(-1px);}
.pill:active{transform:translateY(0);}
.pill.is-current{background:var(--c-primary);color:#fff;border-color:var(--c-primary);box-shadow:0 6px 16px rgba(43,108,230,.22);}
.pill.is-current:hover{background:var(--c-primary-deep);}

/* ---------- faq ---------- */
.faq-wrap{margin-top:44px;}
.faq-wrap > h2{font-size:24px;}
.faq-wrap > p{margin-top:8px;font-size:15px;color:var(--t-sub);}
.faq-list{margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;transition:background .2s ease,box-shadow .2s ease;
}
.faq-item[open]{background:var(--c-primary-light);box-shadow:var(--sh-2);}
.faq-item summary{
  position:relative;list-style:none;cursor:pointer;padding:18px 54px 18px 22px;
  font-size:17px;font-weight:600;color:var(--t-main);
}
.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:3px;background:var(--c-primary);
}
.faq-item summary::after{
  content:"";position:absolute;right:22px;top:50%;width:12px;height:12px;
  transform:translateY(-50%) rotate(45deg);
  border-right:2px solid var(--c-primary);border-bottom:2px solid var(--c-primary);
  transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:translateY(-70%) rotate(-135deg);}
.faq-item .faq-body{padding:0 22px 20px 22px;}
.faq-item .faq-body p{font-size:15px;line-height:1.8;color:var(--t-sub);}
.faq-item .faq-body p + p{margin-top:10px;}

/* ---------- cta strip ---------- */
.cta-strip{
  margin-top:56px;background:var(--c-primary-light);border-radius:var(--r-strip);
  padding:40px;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
}
.cta-strip h2{font-size:23px;max-width:560px;}
.cta-strip p{margin-top:8px;font-size:14px;color:var(--t-sub);max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.share-group{display:flex;gap:10px;}
.share-btn{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--c-primary-line);background:#fff;
  color:var(--c-primary);display:inline-flex;align-items:center;justify-content:center;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.share-btn:hover{background:#fff;box-shadow:var(--sh-1);transform:translateY(-1px);}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-foot);color:rgba(255,255,255,.72);margin-top:80px;padding:56px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand .logo-text{color:#fff;font-size:17px;font-weight:700;}
.footer-brand .logo-text em{font-style:normal;color:#7FB0FF;}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:320px;}
.footer-col h3{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px;}
.footer-col a{
  display:block;font-size:14px;color:rgba(255,255,255,.72);padding:6px 0;
  transition:color .2s ease,transform .2s ease;
}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-note{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  :root{--sp-section:56px;--nav-h:60px;}
  .nav-links{display:none;}
  .burger{display:inline-flex;}
  .index-grid{grid-template-columns:1fr;gap:20px;}
  .toc-card{position:static;padding:16px;}
  .toc-title{display:none;}
  .toc-list{
    flex-direction:row;overflow-x:auto;gap:8px;margin-top:0;
    padding-bottom:4px;scrollbar-width:thin;-webkit-overflow-scrolling:touch;
  }
  .toc-list a{
    flex:0 0 auto;border:1px solid var(--line);border-radius:var(--r-badge);
    padding:8px 14px;font-size:13px;white-space:nowrap;
  }
  .toc-list a::before{display:none;}
  .toc-tip{display:none;}
  .highlight{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  h1{font-size:30px;}
}
@media (max-width:767px){
  :root{--sp-section:44px;--nav-h:56px;}
  .container{padding:0 18px;}
  body{font-size:15px;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  .nav-right .btn-sm{display:none;}
  .drawer{width:84vw;}
  .page-head h1{font-size:27px;line-height:1.45;}
  .entry-row{padding:14px 16px;gap:12px;}
  .entry-body p{-webkit-line-clamp:2;}
  .entry-panel-head{padding:18px 16px;}
  .highlight{grid-template-columns:1fr;}
  .cta-strip{padding:26px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:480px){
  .drawer{width:92vw;}
  .logo{font-size:16px;}
  .pill{height:36px;padding:0 14px;font-size:13px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
}

/* roulang page: article */
:root{
  --c-primary:#2B6CE6;
  --c-primary-deep:#1E56C4;
  --c-primary-light:#EAF1FE;
  --c-primary-line:#C9DBFB;
  --c-accent:#F2683C;
  --c-accent-light:#FDEEE8;
  --c-teal:#12A08A;
  --c-teal-light:#E6F6F3;
  --c-text:#0E1E33;
  --c-text-2:#55657C;
  --c-text-3:#8A99AE;
  --c-bg:#F4F7FC;
  --c-card:#FFFFFF;
  --c-bg-alt:#EEF3FA;
  --c-dark:#0E1E33;
  --c-line:#E4EBF4;
  --c-line-soft:rgba(14,30,51,.05);
  --c-ok:#12A08A;
  --c-warn:#E5A100;
  --c-err:#D94A3D;
  --sh-1:0 2px 8px rgba(14,30,51,.05);
  --sh-2:0 8px 24px rgba(14,30,51,.08);
  --sh-hover:0 14px 32px rgba(43,108,230,.14);
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --nav-h:64px;
}
*,*::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-text);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:solid;border-width:1px;border-color:var(--c-line-soft);background:var(--c-bg-alt);}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;font-size:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--c-text);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;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  height:var(--nav-h);
  background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.nav-inner{height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:20px;}
.nav-left{display:flex;align-items:center;gap:32px;min-width:0;}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:-.02em;white-space:nowrap;}
.logo-mark{
  width:22px;height:22px;border-radius:7px;flex:none;
  background:linear-gradient(140deg,var(--c-primary) 0%,var(--c-teal) 100%);
  box-shadow:0 2px 6px rgba(43,108,230,.28);
}
.logo-text{color:var(--c-text);}
.logo-text em{font-style:normal;color:var(--c-primary);}
.nav-links{display:flex;align-items:center;gap:26px;}
.nav-links a{
  position:relative;
  font-size:15px;font-weight:500;color:var(--c-text-2);
  padding:8px 0;
  transition:color .2s ease;
  white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-links a:hover{color:var(--c-primary);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--c-primary);}
.nav-links a.active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;flex:none;}
.icon-btn{
  width:36px;height:36px;border-radius:50%;
  border:1px solid var(--c-line);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--c-text-2);background:#fff;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.icon-btn:hover{background:var(--c-primary-light);color:var(--c-primary);border-color:var(--c-primary-line);}
.icon-btn:active{transform:translateY(1px);}
.burger{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--c-line);
  display:none;align-items:center;justify-content:center;background:#fff;
}
.burger span{display:block;width:16px;height:2px;background:var(--c-text);border-radius:2px;position:relative;transition:background .2s ease;}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--c-text);border-radius:2px;transition:transform .2s ease;}
.burger span::before{top:-5px;}
.burger span::after{top:5px;}
.burger:hover{background:var(--c-primary-light);}

/* 移动端抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,30,51,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:70;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:380px;background:#fff;z-index:80;
  transform:translateX(100%);transition:transform .28s ease;
  display:flex;flex-direction:column;padding:20px 20px 28px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer-close{width:36px;height:36px;border-radius:50%;border:1px solid var(--c-line);display:inline-flex;align-items:center;justify-content:center;color:var(--c-text-2);}
.drawer-close:hover{background:var(--c-primary-light);color:var(--c-primary);}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;border-bottom:1px solid var(--c-line);
  font-size:15px;font-weight:500;color:var(--c-text-2);
}
.drawer-links a:hover,.drawer-links a.active{color:var(--c-primary);}
.drawer-search{margin:18px 0 16px;}
.field-label{display:block;font-size:13px;color:var(--c-text-2);margin-bottom:6px;}
.text-input{
  width:100%;height:44px;padding:0 14px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:#fff;color:var(--c-text);outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.text-input::placeholder{color:var(--c-text-3);}
.text-input:focus{border-color:var(--c-primary);box-shadow:0 0 0 4px var(--c-primary-light);}
.text-input.is-error{border-color:var(--c-err);}
.field-hint{font-size:13px;color:var(--c-err);margin-top:6px;display:none;}
.field-hint.show{display:block;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 2px 8px rgba(43,108,230,.22);}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 6px rgba(43,108,230,.18);}
.btn-ghost{background:#fff;color:var(--c-primary);border:1px solid var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-light);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{background:#B7C2D2;color:#fff;opacity:.6;pointer-events:none;box-shadow:none;}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;font-size:15px;transition:gap .2s ease;}
.text-link:hover{gap:10px;}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:500;line-height:1;
}
.badge-cat{background:var(--c-teal-light);color:#0C7A6A;}
.badge-pick{background:var(--c-accent-light);color:#C74A22;}
.badge-time{background:#EEF2F8;color:var(--c-text-2);}

/* ============ 面包屑 ============ */
.crumbs{padding:22px 0 0;font-size:14px;color:var(--c-text-2);}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumbs li{display:inline-flex;align-items:center;gap:8px;}
.crumbs li+li::before{content:"/";color:var(--c-text-3);}
.crumbs a{color:var(--c-text-2);transition:color .2s ease;}
.crumbs a:hover{color:var(--c-primary);}
.crumbs .current{color:var(--c-text-3);}

/* ============ 文章头部 ============ */
.article-hero{max-width:860px;margin:0 auto;padding:26px 0 0;}
.article-hero h1{
  font-size:32px;line-height:1.35;font-weight:700;letter-spacing:-.01em;
}
.article-lead{
  margin-top:16px;font-size:16px;color:var(--c-text-2);line-height:1.85;
  padding-left:14px;border-left:3px solid var(--c-primary-line);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:20px;font-size:13px;color:var(--c-text-2);
  font-variant-numeric:tabular-nums;
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--c-primary-line);}
.rule{height:1px;background:var(--c-line);margin:28px 0 0;}

/* ============ 正文排版 ============ */
.article-body{max-width:760px;margin:0 auto;padding:34px 0 0;}
.article-content{font-size:16.5px;line-height:1.9;color:var(--c-text);}
.article-content > * + *{margin-top:1.4em;}
.article-content p{color:var(--c-text);}
.article-content > p:first-of-type{font-size:17px;color:var(--c-text);}
.article-content h2{
  position:relative;margin:40px 0 14px;padding-left:12px;
  font-size:24px;line-height:1.4;font-weight:600;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--c-primary);
}
.article-content h3{margin:28px 0 10px;font-size:18px;line-height:1.5;font-weight:600;}
.article-content blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--c-primary);
  background:var(--c-primary-light);border-radius:var(--r-img);
  color:var(--c-text-2);font-size:16px;
}
.article-content ul,.article-content ol{margin:18px 0;padding-left:6px;}
.article-content ul li{position:relative;padding-left:22px;line-height:1.9;}
.article-content ul li + li{margin-top:8px;}
.article-content ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--c-primary);
}
.article-content ol{counter-reset:kyr;}
.article-content ol li{position:relative;padding-left:30px;counter-increment:kyr;line-height:1.9;}
.article-content ol li + li{margin-top:8px;}
.article-content ol li::before{
  content:counter(kyr);position:absolute;left:0;top:.5em;
  width:20px;height:20px;border-radius:6px;background:var(--c-primary-light);color:var(--c-primary);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.article-content img{border-radius:var(--r-img);margin:24px 0;width:100%;}
.article-content figure{margin:24px 0;}
.article-content figcaption{text-align:center;font-size:13px;color:var(--c-text-3);margin-top:8px;}
.article-content a{color:var(--c-primary);text-decoration:none;}
.article-content a:hover{text-decoration:underline;}
.article-content .table-scroll{overflow-x:auto;border:1px solid var(--c-line);border-radius:var(--r-img);margin:24px 0;background:#fff;}
.article-content table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px;}
.article-content th,.article-content td{padding:12px 16px;border-bottom:1px solid var(--c-line);text-align:left;}
.article-content th{background:var(--c-bg-alt);font-weight:600;color:var(--c-text);}
.article-content tr:last-child td{border-bottom:0;}
.article-content strong{font-weight:700;}

/* ============ 文末 ============ */
.article-foot{max-width:760px;margin:0 auto;padding:36px 0 0;}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.tag-row .label{font-size:13px;color:var(--c-text-3);}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--c-teal-light);color:#0C7A6A;font-size:13px;font-weight:500;
  transition:transform .2s ease,background .2s ease;
}
.tag:hover{transform:translateY(-1px);background:#D6F1EA;}
.foot-bar{
  margin-top:22px;padding-top:22px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
}
.share-group{display:flex;align-items:center;gap:10px;}
.share-group .label{font-size:13px;color:var(--c-text-3);}
.share-btn{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--c-line);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;color:var(--c-text-2);
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.share-btn:hover{background:var(--c-primary-light);color:var(--c-primary);border-color:var(--c-primary-line);transform:translateY(-1px);}
.share-btn:active{transform:translateY(0);}
.source-line{margin-top:16px;font-size:13px;color:var(--c-text-3);}

/* ============ 区块通用 ============ */
.section{padding:72px 0 0;}
.section-alt{margin-top:64px;padding:64px 0;background:var(--c-bg-alt);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;}
.section-head h2{font-size:25px;line-height:1.35;font-weight:600;}
.section-head p{margin-top:10px;font-size:16px;color:var(--c-text-2);line-height:1.8;max-width:720px;}

/* ============ 相关推荐 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.card{
  background:var(--c-card);border:1px solid var(--c-line-soft);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.card-cover{position:relative;overflow:hidden;background:var(--c-bg-alt);}
.card-cover img{width:100%;height:100%;object-fit:cover;border:0;border-radius:inherit;}
.card:hover .card-cover img{transform:scale(1.03);transition:transform .4s ease;}
.card-cover .badge{position:absolute;left:12px;top:12px;}
.card-body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:17px;line-height:1.5;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-body p{font-size:14px;color:var(--c-text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.card-meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-text-3);font-variant-numeric:tabular-nums;}
.rel-grid .card-cover{aspect-ratio:16/10;}

/* ============ 返回入口 ============ */
.back-row{max-width:760px;margin:0 auto;padding:30px 0 0;display:flex;flex-wrap:wrap;align-items:center;gap:14px;}

/* ============ FAQ ============ */
.faq{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq details{
  background:#fff;border:1px solid var(--c-line);border-radius:14px;overflow:hidden;
  transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.faq details[open]{background:var(--c-primary-light);border-color:var(--c-primary-line);box-shadow:var(--sh-1);}
.faq summary{
  position:relative;list-style:none;cursor:pointer;
  padding:18px 54px 18px 20px;font-size:17px;font-weight:600;color:var(--c-text);
  border-left:3px solid var(--c-primary);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{
  content:"";position:absolute;right:22px;top:50%;width:12px;height:2px;background:var(--c-primary);
  transform:translateY(-50%);transition:transform .25s ease;
}
.faq summary::before{
  content:"";position:absolute;right:22px;top:50%;width:12px;height:2px;background:var(--c-primary);
  transform:translateY(-50%) rotate(90deg);transition:transform .25s ease;
}
.faq details[open] summary::before{transform:translateY(-50%) rotate(0deg);}
.faq .answer{padding:0 22px 20px 23px;font-size:15px;line-height:1.8;color:var(--c-text-2);}
.faq .answer p + p{margin-top:10px;}

/* ============ CTA 条 ============ */
.cta-band{
  margin-top:72px;background:var(--c-primary-light);border-radius:20px;
  padding:40px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-band h2{font-size:24px;line-height:1.4;font-weight:600;}
.cta-band p{margin-top:10px;font-size:15px;color:var(--c-text-2);line-height:1.8;max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px;}

/* ============ 空态 ============ */
.empty-state{
  border:1px dashed var(--c-primary-line);background:var(--c-bg);border-radius:var(--r-card);
  padding:48px 24px;text-align:center;
}
.empty-state .icon{
  width:52px;height:52px;margin:0 auto 14px;border-radius:16px;background:#fff;border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;color:var(--c-primary);
}
.empty-state h3{font-size:18px;font-weight:600;}
.empty-state p{margin:10px auto 20px;font-size:14px;color:var(--c-text-2);max-width:460px;line-height:1.8;}

/* ============ 页脚 ============ */
.site-footer{margin-top:80px;background:var(--c-dark);color:rgba(255,255,255,.72);padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:32px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand .logo-text em{color:#8FB6FF;}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:320px;}
.footer-col h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:6px 0;transition:color .2s ease,transform .2s ease;}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-note{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);}
.footer-bottom{
  margin-top:40px;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.72);font-variant-numeric:tabular-nums;
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .rel-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .burger{display:inline-flex;}
  .nav-right .btn-sm{display:none;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .section{padding-top:56px;}
  .section-alt{margin-top:56px;padding:48px 0;}
  .article-hero h1{font-size:30px;}
}
@media (max-width:767px){
  :root{--nav-h:56px;}
  body{font-size:15px;}
  .container{padding:0 18px;}
  .article-hero h1{font-size:28px;}
  .article-content{font-size:15.5px;}
  .article-content h2{font-size:21px;}
  .cta-band{padding:26px;margin-top:52px;}
  .cta-band h2{font-size:20px;}
  .rel-grid{grid-template-columns:1fr;gap:18px;}
  .section{padding-top:44px;}
  .section-alt{margin-top:44px;padding:40px 0;}
  .section-head h2{font-size:21px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .site-footer{margin-top:56px;padding-top:44px;}
  .drawer{width:84vw;}
}
@media (max-width:480px){
  .drawer{width:92vw;}
  .article-hero h1{font-size:26px;}
  .foot-bar{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category3 */
:root{
  --c-primary:#2B6CE6;
  --c-primary-deep:#1E56C4;
  --c-primary-light:#EAF1FE;
  --c-primary-line:#C9DBFB;
  --c-accent:#F2683C;
  --c-accent-light:#FDEEE8;
  --c-teal:#12A08A;
  --c-teal-light:#E6F6F3;
  --t-1:#0E1E33;
  --t-2:#55657C;
  --t-3:#8A99AE;
  --bg:#F4F7FC;
  --bg-alt:#EEF3FA;
  --card:#FFFFFF;
  --line:#E4EBF4;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --sh-1:0 2px 8px rgba(14,30,51,.05);
  --sh-2:0 8px 24px rgba(14,30,51,.08);
  --sh-hover:0 14px 32px rgba(43,108,230,.14);
  --ease:200ms ease;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--t-1);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;}
h1,h2,h3,p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.num,.badge-time,.tl-date{font-variant-numeric:tabular-nums;}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.scrolled{box-shadow:var(--sh-1);}
.nav-inner{
  height:64px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.nav-left{display:flex;align-items:center;gap:32px;min-width:0;}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:700;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.logo-mark{
  width:28px;
  height:28px;
  border-radius:9px;
  background:var(--c-primary);
  position:relative;
  flex:0 0 auto;
}
.logo-mark::after{
  content:"";
  position:absolute;
  left:8px;
  top:8px;
  width:12px;
  height:12px;
  border-radius:4px;
  background:#fff;
  opacity:.94;
}
.logo-text{color:var(--t-1);}
.logo-text em{font-style:normal;color:var(--c-primary);}

.nav-links{display:flex;align-items:center;gap:2px;}
.nav-links a{
  position:relative;
  display:block;
  padding:8px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--t-2);
  border-radius:8px;
  transition:color var(--ease),background var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform var(--ease);
}
.nav-links a:hover{color:var(--c-primary);background:var(--c-primary-light);}
.nav-links a.active{color:var(--c-primary);}
.nav-links a.active::after{transform:scaleX(1);}
.nav-links a:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

.nav-right{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:36px;
  height:36px;
  border-radius:50%;
  border:1px solid var(--line);
  background:#fff;
  color:var(--t-2);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  transition:color var(--ease),background var(--ease),border-color var(--ease);
}
.icon-btn:hover{color:var(--c-primary);background:var(--c-primary-light);border-color:var(--c-primary-line);}
.icon-btn:active{color:var(--c-primary-deep);}
.icon-btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 1px 2px rgba(43,108,230,.22);}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-1px);box-shadow:0 8px 18px rgba(43,108,230,.24);}
.btn-primary:active{transform:none;box-shadow:none;}
.btn-outline{background:#fff;color:var(--c-primary);border-color:var(--c-primary-line);}
.btn-outline:hover{background:var(--c-primary-light);border-color:var(--c-primary);}
.btn-outline:active{background:var(--c-primary-line);transform:none;}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.btn[disabled]{background:#B7C2D2;color:#fff;box-shadow:none;opacity:.6;cursor:not-allowed;transform:none;}

.burger{
  display:none;
  width:40px;
  height:40px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  cursor:pointer;
  align-items:center;
  justify-content:center;
  transition:background var(--ease),border-color var(--ease);
}
.burger:hover{background:var(--c-primary-light);border-color:var(--c-primary-line);}
.burger:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.burger span{display:block;width:18px;height:2px;background:var(--t-1);position:relative;border-radius:2px;}
.burger span::before,
.burger span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  background:var(--t-1);
  border-radius:2px;
}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}

/* ============ 移动抽屉 ============ */
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(14,30,51,.45);
  opacity:0;
  visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;
  z-index:80;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;
  top:0;
  right:0;
  height:100%;
  width:84vw;
  max-width:400px;
  background:#fff;
  z-index:90;
  transform:translateX(102%);
  transition:transform .3s ease;
  display:flex;
  flex-direction:column;
  padding:20px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
}
.drawer-title{font-size:16px;font-weight:700;}
.drawer-close{
  width:34px;height:34px;border-radius:50%;border:1px solid var(--line);background:#fff;
  color:var(--t-2);font-size:16px;line-height:1;cursor:pointer;transition:background var(--ease),color var(--ease);
}
.drawer-close:hover{background:var(--c-primary-light);color:var(--c-primary);}
.drawer-nav{margin:8px 0 20px;}
.drawer-nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:52px;
  border-bottom:1px solid var(--line);
  font-size:15px;
  color:var(--t-2);
  transition:color var(--ease),padding-left var(--ease);
}
.drawer-nav a:hover{color:var(--c-primary);padding-left:4px;}
.drawer-nav a.active{color:var(--c-primary);font-weight:600;}
.drawer-search label{display:block;font-size:13px;color:var(--t-3);margin-bottom:6px;}
.drawer-search input{
  width:100%;
  height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  padding:0 14px;
  font-size:15px;
  color:var(--t-1);
  background:#fff;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.drawer-search input::placeholder{color:var(--t-3);}
.drawer-search input:focus{
  outline:none;
  border-color:var(--c-primary);
  box-shadow:0 0 0 4px var(--c-primary-light);
}
.drawer-cta{margin-top:18px;width:100%;}

/* ============ 通用板块 ============ */
.section{padding:56px 0;}
.section-tight{padding:32px 0 0;}
.section-head{max-width:760px;margin-bottom:28px;}
.section-head h2{
  font-size:25px;
  font-weight:600;
  line-height:1.4;
  letter-spacing:-.005em;
}
.section-head p{margin-top:10px;font-size:16px;color:var(--t-2);}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:999px;
  font-size:12px;
  font-weight:500;
  line-height:1.6;
}
.badge-teal{background:var(--c-teal-light);color:#0B7A69;}
.badge-time{background:var(--bg-alt);color:var(--t-2);}
.badge-accent{background:var(--c-accent-light);color:#C64A22;}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--c-primary);
  font-size:14px;
  font-weight:600;
  transition:color var(--ease);
}
.text-link .arrow{transition:transform var(--ease);}
.text-link:hover{color:var(--c-primary-deep);}
.text-link:hover .arrow{transform:translateX(4px);}
.text-link:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:4px;}

/* ============ 面包屑 / 页头 ============ */
.crumb-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--t-3);
  padding-top:28px;
}
.crumb-list a{color:var(--t-2);transition:color var(--ease);}
.crumb-list a:hover{color:var(--c-primary);}
.crumb-list .sep{color:#C2CCDA;}
.crumb-list .current{color:var(--t-3);}

.page-head{padding:20px 0 0;max-width:840px;}
.page-head h1{
  margin-top:16px;
  font-size:34px;
  font-weight:700;
  line-height:1.35;
  letter-spacing:-.01em;
}
.page-head .lede{
  margin-top:14px;
  font-size:17px;
  line-height:1.8;
  color:var(--t-2);
}
.page-meta{
  margin-top:18px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  align-items:center;
  font-size:13px;
  color:var(--t-3);
}

/* ============ 近期重点 ============ */
.focus-grid{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:32px;
  align-items:center;
  background:#fff;
  border:1px solid var(--line);
  border-radius:20px;
  padding:28px;
  box-shadow:var(--sh-1);
}
.focus-media{
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-alt);
  aspect-ratio:16/10;
}
.focus-media img{width:100%;height:100%;object-fit:cover;}
.focus-body h2{font-size:24px;font-weight:600;line-height:1.45;}
.focus-body p{margin-top:12px;font-size:16px;color:var(--t-2);}
.focus-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.focus-list li{
  display:flex;
  gap:10px;
  font-size:15px;
  color:var(--t-2);
  line-height:1.75;
}
.focus-list li::before{
  content:"";
  flex:0 0 auto;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--c-primary);
  margin-top:11px;
}

/* ============ 时间线 ============ */
.timeline{
  position:relative;
  padding:12px 0 8px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:50%;
  top:0;
  bottom:0;
  width:2px;
  background:var(--line);
  transform:translateX(-1px);
  border-radius:2px;
}
.tl-item{
  position:relative;
  width:calc(50% - 36px);
  margin-bottom:28px;
}
.tl-item.right{margin-left:calc(50% + 36px);}
.tl-item::before{
  content:"";
  position:absolute;
  top:30px;
  width:12px;
  height:12px;
  border-radius:50%;
  background:var(--c-primary);
  box-shadow:0 0 0 4px var(--c-primary-light);
}
.tl-item::after{
  content:"";
  position:absolute;
  top:35px;
  width:34px;
  height:2px;
  background:var(--line);
}
.tl-item.left::before{right:-42px;}
.tl-item.left::after{right:-36px;}
.tl-item.right::before{left:-42px;}
.tl-item.right::after{left:-36px;}
.tl-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.tl-card:hover{
  box-shadow:var(--sh-hover);
  transform:translateY(-3px);
  border-color:var(--c-primary-line);
}
.tl-card h3{
  margin-top:12px;
  font-size:18px;
  font-weight:600;
  line-height:1.55;
}
.tl-card p{
  margin-top:10px;
  font-size:15px;
  color:var(--t-2);
  line-height:1.8;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.tl-card .text-link{margin-top:14px;}

/* ============ 分类跳转条 ============ */
.pill-bar{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:6px;
}
.pill{
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 18px;
  border-radius:999px;
  border:1px solid var(--c-primary-line);
  background:#fff;
  color:var(--c-primary);
  font-size:14px;
  font-weight:500;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease);
}
.pill:hover{background:var(--c-primary-light);transform:translateY(-1px);}
.pill:active{transform:none;}
.pill.current{
  background:var(--c-primary);
  border-color:var(--c-primary);
  color:#fff;
}
.pill.current:hover{background:var(--c-primary-deep);}
.pill:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

/* ============ FAQ ============ */
.faq-list{margin-top:4px;}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  margin-bottom:12px;
  overflow:hidden;
  transition:background var(--ease),border-color var(--ease);
}
.faq-item summary{
  position:relative;
  list-style:none;
  cursor:pointer;
  padding:16px 52px 16px 24px;
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  transition:background var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";
  position:absolute;
  left:0;
  top:12px;
  bottom:12px;
  width:3px;
  border-radius:2px;
  background:var(--c-primary);
}
.faq-item summary::after{
  content:"+";
  position:absolute;
  right:20px;
  top:50%;
  transform:translateY(-50%);
  font-size:20px;
  font-weight:400;
  color:var(--c-primary);
  line-height:1;
  transition:transform var(--ease);
}
.faq-item[open]{background:var(--c-primary-light);border-color:var(--c-primary-line);}
.faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg);}
.faq-item summary:focus-visible{outline:2px solid var(--c-primary);outline-offset:-3px;}
.faq-body{
  padding:0 24px 18px 24px;
  font-size:15px;
  color:var(--t-2);
  line-height:1.8;
}
.faq-body p+p{margin-top:10px;}

/* ============ CTA 条 ============ */
.cta-band{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  background:var(--c-primary-light);
  border-radius:20px;
  padding:40px;
}
.cta-band h2{font-size:23px;font-weight:600;line-height:1.5;}
.cta-band p{margin-top:10px;font-size:15px;color:var(--t-2);}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:64px;
  background:#0E1E33;
  color:#fff;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:40px;
  padding:56px 0 32px;
}
.footer-brand .logo-text{color:#fff;}
.footer-desc{
  margin-top:16px;
  font-size:14px;
  color:rgba(255,255,255,.72);
  line-height:1.85;
  max-width:320px;
}
.footer-col h3{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:14px;
}
.footer-col a{
  display:block;
  font-size:14px;
  color:rgba(255,255,255,.72);
  padding:5px 0;
  transition:color var(--ease),transform var(--ease);
}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-col a:focus-visible{outline:2px solid #fff;outline-offset:3px;border-radius:4px;}
.footer-note{
  font-size:14px;
  color:rgba(255,255,255,.72);
  line-height:1.85;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:18px 0 26px;
  display:flex;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.72);
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .nav-links{display:none;}
  .burger{display:inline-flex;}
  .section{padding:48px 0;}
  .focus-grid{grid-template-columns:1fr;gap:22px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:44px 0 26px;}
}
@media (max-width:767px){
  body{font-size:15px;}
  .container{padding:0 18px;}
  .nav-inner{height:56px;}
  .nav-right .btn{display:none;}
  .page-head h1{font-size:29px;}
  .page-head .lede{font-size:16px;}
  .section{padding:44px 0;}
  .focus-grid{padding:20px;border-radius:16px;}
  .timeline::before{left:12px;transform:none;}
  .tl-item{
    width:100%;
    margin-left:0;
    padding-left:40px;
    margin-bottom:22px;
  }
  .tl-item.right{margin-left:0;}
  .tl-item.left::before,
  .tl-item.right::before{left:6px;right:auto;}
  .tl-item.left::after,
  .tl-item.right::after{left:18px;right:auto;width:22px;}
  .cta-band{padding:26px;border-radius:16px;}
  .cta-band h2{font-size:20px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
}
@media (max-width:480px){
  .drawer{width:92vw;}
  .page-head h1{font-size:27px;}
  .section-head h2{font-size:21px;}
  .tl-card{padding:20px;}
}

/* roulang page: category2 */
:root{
  --c-primary:#2B6CE6;
  --c-primary-deep:#1E56C4;
  --c-primary-light:#EAF1FE;
  --c-primary-line:#C9DBFB;
  --c-accent:#F2683C;
  --c-accent-light:#FDEEE8;
  --c-accent-deep:#C4451C;
  --c-teal:#12A08A;
  --c-teal-light:#E6F6F3;
  --c-teal-deep:#0C7A69;
  --t-main:#0E1E33;
  --t-sub:#55657C;
  --t-weak:#8A99AE;
  --bg-page:#F4F7FC;
  --bg-card:#FFFFFF;
  --bg-alt:#EEF3FA;
  --bg-footer:#0E1E33;
  --line:#E4EBF4;
  --line-soft:rgba(14,30,51,.05);
  --ok:#12A08A;
  --warn:#E5A100;
  --err:#D94A3D;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --r-band:20px;
  --sh-1:0 2px 8px rgba(14,30,51,.05);
  --sh-2:0 8px 24px rgba(14,30,51,.08);
  --sh-hover:0 14px 32px rgba(43,108,230,.14);
  --ease:200ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-page);
  color:var(--t-main);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:600;letter-spacing:-0.005em;}
p{margin:0;}
img{max-width:100%;display:block;background:var(--bg-alt);}
a{color:var(--c-primary);text-decoration:none;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;}
.container{max-width:1240px;margin:0 auto;padding:0 24px;}
.no-scroll{overflow:hidden;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.scrolled{box-shadow:var(--sh-1);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px;}
.nav-left{display:flex;align-items:center;gap:30px;min-width:0;}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex:none;}
.logo-mark{width:20px;height:20px;border-radius:6px;background:linear-gradient(135deg,#2B6CE6 0%,#12A08A 100%);display:inline-block;flex:none;}
.logo-text{font-size:17px;font-weight:700;color:var(--t-main);letter-spacing:.01em;white-space:nowrap;}
.logo-text em{font-style:normal;color:var(--c-primary);}
.nav-links{display:flex;align-items:center;gap:2px;}
.nav-links a{
  position:relative;display:inline-block;padding:20px 11px;
  font-size:15px;font-weight:500;color:var(--t-sub);
  transition:color var(--ease);white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:11px;right:11px;bottom:14px;height:2px;
  background:var(--c-primary);border-radius:2px;transform:scaleX(0);
  transition:transform var(--ease);
}
.nav-links a:hover{color:var(--c-primary);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--c-primary);font-weight:600;}
.nav-links a.active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;flex:none;}

.icon-btn{
  width:36px;height:36px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--t-sub);
  display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all var(--ease);
}
.icon-btn:hover{background:var(--c-primary-light);border-color:var(--c-primary-line);color:var(--c-primary);}
.icon-btn:active{transform:translateY(1px);}
.icon-btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:500;cursor:pointer;border:1px solid transparent;
  transition:all var(--ease);text-decoration:none;white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 2px 6px rgba(43,108,230,.20);}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-1px);box-shadow:0 6px 16px rgba(43,108,230,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 6px rgba(43,108,230,.20);}
.btn-outline{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-light);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(0);}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:var(--r-btn);}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{background:#B7C2D2;border-color:#B7C2D2;color:#fff;opacity:.6;cursor:not-allowed;transform:none;box-shadow:none;}

.burger{
  display:none;width:38px;height:38px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;cursor:pointer;
  align-items:center;justify-content:center;transition:all var(--ease);
}
.burger span{position:relative;display:block;width:16px;height:2px;background:var(--t-main);border-radius:2px;transition:background var(--ease);}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--t-main);border-radius:2px;transition:transform var(--ease);}
.burger span::before{top:-5px;}
.burger span::after{top:5px;}
.burger:hover{background:var(--c-primary-light);border-color:var(--c-primary-line);}

.mask{position:fixed;inset:0;background:rgba(14,30,51,.45);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:80;}
.mask.show{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:84vw;max-width:420px;
  background:#fff;z-index:90;padding:22px;
  transform:translateX(100%);transition:transform .28s ease;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--t-sub);cursor:pointer;font-size:16px;line-height:1;}
.drawer-close:hover{background:var(--c-primary-light);color:var(--c-primary);border-color:var(--c-primary-line);}
.drawer-links{display:flex;flex-direction:column;border-top:1px solid var(--line);}
.drawer-links a{
  height:52px;display:flex;align-items:center;justify-content:space-between;
  border-bottom:1px solid var(--line);font-size:15px;color:var(--t-main);
  font-weight:500;padding:0 4px;transition:all var(--ease);
}
.drawer-links a:hover{color:var(--c-primary);background:var(--c-primary-light);padding-left:10px;}
.drawer-links a.active{color:var(--c-primary);}
.drawer-form{margin:22px 0 16px;}
.drawer-form label{display:block;font-size:13px;color:var(--t-sub);margin-bottom:8px;}

/* ---------- 表单 ---------- */
.field{
  height:44px;width:100%;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--t-main);
  font-size:15px;font-family:inherit;transition:all var(--ease);
}
.field::placeholder{color:var(--t-weak);}
.field:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px var(--c-primary-light);}
.field.is-error{border-color:var(--err);}
.field:disabled{background:#F4F7FC;color:#B7C2D2;cursor:not-allowed;}
.field-hint{font-size:13px;color:var(--t-weak);margin-top:8px;}
.field-hint.error{color:var(--err);}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:14px;color:var(--t-weak);padding:22px 0 18px;
}
.breadcrumb a{color:var(--t-sub);transition:color var(--ease);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#C4CEDC;}
.breadcrumb .current{color:var(--t-weak);}

/* ---------- 横幅 ---------- */
.banner{
  position:relative;border-radius:var(--r-band);overflow:hidden;
  aspect-ratio:21/9;border:1px solid var(--line);background:var(--bg-alt);
}
.banner-img{width:100%;height:100%;object-fit:cover;}
.banner-mask{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(14,30,51,.55) 0%,rgba(14,30,51,.38) 45%,rgba(14,30,51,.06) 100%);
}
.banner-body{
  position:absolute;left:44px;right:44px;bottom:40px;max-width:760px;color:#fff;
}
.banner-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:var(--c-accent-light);color:var(--c-accent-deep);
  font-size:12px;font-weight:600;letter-spacing:.02em;margin-bottom:16px;
}
.banner h1{
  font-size:clamp(26px,2.6vw,35px);font-weight:700;line-height:1.3;
  color:#fff;margin-bottom:14px;letter-spacing:-0.01em;
}
.banner-lead{
  font-size:16px;line-height:1.8;color:rgba(255,255,255,.86);max-width:640px;
}

/* ---------- 板块 ---------- */
.section{padding:56px 0;}
.section-alt{background:var(--bg-alt);}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:28px;flex-wrap:wrap;margin-bottom:32px;
}
.section-head h2{font-size:25px;font-weight:600;color:var(--t-main);margin-bottom:10px;}
.section-sub{font-size:15.5px;color:var(--t-sub);line-height:1.8;max-width:660px;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:500;color:var(--c-primary);transition:color var(--ease);
}
.text-link:hover{color:var(--c-primary-deep);}
.text-link .arrow{transition:transform var(--ease);}
.text-link:hover .arrow{transform:translateX(4px);}

/* ---------- 双列大卡 ---------- */
.card-grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
.big-card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease);
}
.big-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.big-card:hover .card-title{color:var(--c-primary);}
.card-media{
  position:relative;aspect-ratio:16/10;overflow:hidden;
  background:var(--bg-alt);border-bottom:1px solid var(--line);
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.big-card:hover .card-media img{transform:scale(1.04);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:500;line-height:1.6;
}
.badge-teal{background:var(--c-teal-light);color:var(--c-teal-deep);}
.badge-accent{background:var(--c-accent-light);color:var(--c-accent-deep);}
.badge-neutral{background:#EEF1F6;color:var(--t-sub);}
.badge-float{position:absolute;top:12px;left:12px;backdrop-filter:none;}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-title{font-size:18px;font-weight:600;line-height:1.5;color:var(--t-main);transition:color var(--ease);}
.card-text{
  font-size:15px;line-height:1.8;color:var(--t-sub);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13px;color:var(--t-weak);margin-top:auto;padding-top:4px;
  font-variant-numeric:tabular-nums;
}
.card-meta .dot{color:#C4CEDC;}

/* ---------- 分栏 ---------- */
.split{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start;}
.panel{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px;box-shadow:var(--sh-1);
}
.panel h3{font-size:18px;font-weight:600;margin-bottom:12px;}
.panel p{font-size:15.5px;line-height:1.85;color:var(--t-sub);}
.dot-list{margin-top:20px;display:flex;flex-direction:column;gap:14px;}
.dot-list li{position:relative;padding-left:20px;font-size:15px;line-height:1.8;color:var(--t-sub);}
.dot-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;
  border-radius:50%;background:var(--c-primary);
}
.dot-list li strong{color:var(--t-main);font-weight:600;}

/* ---------- 步骤 ---------- */
.steps{position:relative;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;}
.steps::before{
  content:"";position:absolute;top:17px;left:8%;right:8%;
  border-top:2px dashed var(--c-primary-line);z-index:0;
}
.step{position:relative;z-index:1;}
.step-num{
  width:34px;height:34px;border-radius:50%;
  background:#fff;border:2px solid var(--c-primary);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
}
.step h3{font-size:17px;font-weight:600;margin:16px 0 8px;}
.step p{font-size:14.5px;line-height:1.8;color:var(--t-sub);}

/* ---------- 场景 ---------- */
.scene{display:grid;grid-template-columns:5fr 7fr;gap:36px;align-items:center;}
.scene-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1);}
.scene-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.scene h3{font-size:19px;font-weight:600;margin-bottom:12px;}
.scene p{font-size:15.5px;line-height:1.85;color:var(--t-sub);}
.pill-group{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.pill-tag{
  padding:7px 14px;border-radius:var(--r-pill);
  background:var(--c-primary-light);color:var(--c-primary-deep);
  font-size:13.5px;font-weight:500;
}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px;}
.faq-item{
  background:var(--bg-card);border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--sh-1);overflow:hidden;transition:box-shadow var(--ease);
}
.faq-item:hover{box-shadow:var(--sh-2);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;
  justify-content:space-between;gap:18px;
  padding:18px 22px;font-size:17px;font-weight:600;color:var(--t-main);
  border-left:3px solid transparent;transition:all var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:#F8FAFE;}
.faq-item[open] summary{background:var(--c-primary-light);border-left-color:var(--c-primary);}
.faq-icon{position:relative;width:18px;height:18px;flex:none;margin-top:5px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.faq-icon::before{left:0;right:0;top:8px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:8px;width:2px;}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-answer{padding:0 22px 22px;border-left:3px solid var(--c-primary);}
.faq-answer p{font-size:15px;line-height:1.8;color:var(--t-sub);margin-bottom:10px;}
.faq-answer p:last-child{margin-bottom:0;}

/* ---------- 分类跳转 ---------- */
.cat-pills{display:flex;flex-wrap:wrap;gap:12px;}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:var(--r-pill);
  border:1px solid var(--c-primary-line);background:#fff;color:var(--c-primary);
  font-size:14px;font-weight:500;transition:all var(--ease);
}
.pill:hover{background:var(--c-primary-light);transform:translateY(-1px);}
.pill.current{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}
.pill.current:hover{background:var(--c-primary-deep);}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--c-primary-light);border-radius:var(--r-band);
  padding:40px;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:23px;font-weight:600;color:var(--t-main);margin-bottom:10px;}
.cta-band p{font-size:15px;color:var(--t-sub);line-height:1.8;max-width:560px;}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.share-group{display:flex;align-items:center;gap:8px;margin-left:4px;}
.share-btn{
  width:36px;height:36px;border-radius:50%;
  border:1px solid var(--c-primary-line);background:#fff;color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all var(--ease);
}
.share-btn:hover{background:#fff;border-color:var(--c-primary);transform:translateY(-1px);box-shadow:0 4px 12px rgba(43,108,230,.16);}
.share-btn:active{transform:translateY(0);}
.share-btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.toast{
  position:fixed;left:50%;bottom:36px;transform:translate(-50%,16px);
  background:var(--t-main);color:#fff;font-size:14px;
  padding:10px 20px;border-radius:var(--r-pill);
  opacity:0;visibility:hidden;transition:all .25s ease;z-index:120;
}
.toast.show{opacity:1;visibility:visible;transform:translate(-50%,0);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-footer);color:rgba(255,255,255,.72);margin-top:40px;padding:64px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;
  gap:40px;padding-bottom:44px;
}
.footer-brand .logo-text{color:#fff;}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin-top:16px;max-width:320px;}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.03em;}
.footer-col a{
  display:block;font-size:14px;color:rgba(255,255,255,.72);
  padding:6px 0;transition:all var(--ease);
}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-note{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .banner-body{left:36px;right:36px;bottom:32px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .burger{display:inline-flex;}
  .section{padding:44px 0;}
  .section-head h2{font-size:23px;}
  .split{grid-template-columns:1fr;gap:20px;}
  .scene{grid-template-columns:1fr;gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:15px;}
  .container{padding:0 18px;}
  .nav-inner{height:56px;}
  .logo-text{font-size:15.5px;}
  .banner{aspect-ratio:4/3;border-radius:16px;}
  .banner-body{left:20px;right:20px;bottom:22px;}
  .banner h1{font-size:23px;margin-bottom:10px;}
  .banner-lead{font-size:14.5px;}
  .banner-tag{margin-bottom:12px;}
  .section{padding:34px 0;}
  .section-head{margin-bottom:24px;}
  .section-head h2{font-size:21px;}
  .section-sub{font-size:14.5px;}
  .card-grid-2{grid-template-columns:1fr;gap:20px;}
  .card-title{font-size:17px;}
  .card-body{padding:18px 18px 20px;}
  .panel{padding:22px;}
  .steps{grid-template-columns:1fr;gap:24px;}
  .steps::before{display:none;}
  .faq-item summary{font-size:16px;padding:16px 18px;}
  .faq-answer{padding:0 18px 18px;}
  .cta-band{padding:26px;border-radius:16px;}
  .cta-band h2{font-size:19px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .share-group{margin-left:0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding-top:44px;}
  .drawer{width:84vw;}
}
@media (max-width:480px){
  .drawer{width:92vw;}
  .banner h1{font-size:21px;}
  .pill{padding:9px 14px;font-size:13px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}

/* roulang page: category4 */
:root{
  --c-primary:#2B6CE6;
  --c-primary-deep:#1E56C4;
  --c-primary-light:#EAF1FE;
  --c-primary-line:#C9DBFB;
  --c-accent:#F2683C;
  --c-accent-light:#FDEEE8;
  --c-teal:#12A08A;
  --c-teal-light:#E6F6F3;
  --t-main:#0E1E33;
  --t-sub:#55657C;
  --t-weak:#8A99AE;
  --bg-page:#F4F7FC;
  --bg-card:#FFFFFF;
  --bg-alt:#EEF3FA;
  --footer-bg:#0E1E33;
  --border:#E4EBF4;
  --border-in:rgba(14,30,51,.05);
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(14,30,51,.05);
  --sh-2:0 8px 24px rgba(14,30,51,.08);
  --sh-hover:0 14px 32px rgba(43,108,230,.14);
  --sp-section:80px;
  --ease:200ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--t-main);
  background:var(--bg-page);
  font-variant-numeric:tabular-nums;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;object-fit:cover;}
a{color:inherit;text-decoration:none;transition:color var(--ease),background var(--ease),transform var(--ease);}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.container{max-width:1240px;margin:0 auto;padding:0 24px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow var(--ease);
}
.site-header.scrolled{box-shadow:var(--sh-1);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px;}
.nav-left{display:flex;align-items:center;gap:30px;min-width:0;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:20px;height:20px;border-radius:6px;
  background:linear-gradient(135deg,var(--c-primary) 0%,var(--c-teal) 100%);
  box-shadow:0 2px 6px rgba(43,108,230,.28);
  flex-shrink:0;
}
.logo-text{font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--t-main);white-space:nowrap;}
.logo-text em{font-style:normal;color:var(--c-primary);}
.nav-links{display:flex;align-items:center;gap:24px;}
.nav-links a{
  position:relative;
  font-size:15px;font-weight:500;color:var(--t-sub);
  padding:6px 1px;
  white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--c-primary);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease);
}
.nav-links a:hover{color:var(--c-primary);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--c-primary);font-weight:600;}
.nav-links a.active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.icon-btn{
  width:36px;height:36px;border-radius:50%;
  border:1px solid var(--border);color:var(--t-sub);
  display:inline-flex;align-items:center;justify-content:center;
  background:#fff;
}
.icon-btn:hover{background:var(--c-primary-light);color:var(--c-primary);border-color:var(--c-primary-line);}
.icon-btn:active{transform:translateY(1px);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  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;box-shadow:0 2px 8px rgba(43,108,230,.22);}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-1px);box-shadow:0 8px 20px rgba(43,108,230,.28);}
.btn-primary:active{transform:none;background:var(--c-primary-deep);box-shadow:none;}
.btn-outline{background:#fff;color:var(--c-primary);border-color:var(--c-primary-line);}
.btn-outline:hover{background:var(--c-primary-light);border-color:var(--c-primary);transform:translateY(-1px);}
.btn-outline:active{transform:none;}
.btn-sm{height:38px;padding:0 18px;font-size:14px;border-radius:var(--r-btn);}
.btn-text{color:var(--c-primary);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px;}
.btn-text span{transition:transform var(--ease);}
.btn-text:hover span{transform:translateX(4px);}
.btn:disabled,.btn[disabled]{background:#B7C2D2;color:#fff;opacity:.6;cursor:not-allowed;transform:none;box-shadow:none;}
.burger{
  display:none;width:38px;height:38px;border-radius:10px;
  border:1px solid var(--border);align-items:center;justify-content:center;
}
.burger span{position:relative;display:block;width:16px;height:2px;background:var(--t-main);border-radius:2px;}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--t-main);border-radius:2px;}
.burger span::before{top:-5px;}
.burger span::after{top:5px;}
.burger:hover{background:var(--c-primary-light);border-color:var(--c-primary-line);}

/* drawer */
.overlay{
  position:fixed;inset:0;background:rgba(14,30,51,.45);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);z-index:70;
}
.overlay.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:84vw;max-width:380px;
  background:#fff;z-index:80;transform:translateX(102%);
  transition:transform 260ms ease;display:flex;flex-direction:column;
  box-shadow:-12px 0 32px rgba(14,30,51,.12);
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border);}
.drawer-close{width:34px;height:34px;border-radius:50%;border:1px solid var(--border);display:inline-flex;align-items:center;justify-content:center;color:var(--t-sub);}
.drawer-close:hover{background:var(--c-primary-light);color:var(--c-primary);}
.drawer-nav{padding:8px 0;overflow-y:auto;flex:1;}
.drawer-nav a{display:block;padding:0 20px;line-height:52px;font-size:15px;font-weight:500;color:var(--t-main);border-bottom:1px solid var(--border);}
.drawer-nav a:hover,.drawer-nav a.active{background:var(--c-primary-light);color:var(--c-primary);}
.drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--border);}
.drawer-foot .search-box{display:flex;gap:8px;margin-bottom:14px;}
.drawer-foot .search-box input{flex:1;}
.drawer-foot .btn{width:100%;}

/* form */
input[type="search"],input[type="text"]{
  height:44px;width:100%;
  padding:0 14px;font-size:15px;color:var(--t-main);
  background:#fff;border:1px solid var(--border);border-radius:var(--r-btn);
  transition:border-color var(--ease),box-shadow var(--ease);
}
input[type="search"]::placeholder,input[type="text"]::placeholder{color:var(--t-weak);}
input[type="search"]:focus,input[type="text"]:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px var(--c-primary-light);
}
.field-label{display:block;font-size:13px;color:var(--t-sub);margin-bottom:6px;}
.field-error input{border-color:#D94A3D;}
.field-error .hint{font-size:13px;color:#D94A3D;margin-top:6px;}

/* ---------- generic ---------- */
.section{padding:var(--sp-section) 0;}
.section-alt{background:var(--bg-alt);}
.section-head{margin-bottom:32px;max-width:760px;}
.section-head h2{font-size:25px;font-weight:600;line-height:1.4;letter-spacing:-.01em;}
.section-head p{margin-top:8px;font-size:16px;color:var(--t-sub);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:500;line-height:1;
  padding:5px 10px;border-radius:var(--r-pill);
}
.badge-teal{background:var(--c-teal-light);color:#0B7A6A;}
.badge-accent{background:var(--c-accent-light);color:#C24A22;}
.badge-gray{background:#EFF3F9;color:var(--t-sub);}
.badge-primary{background:var(--c-primary-light);color:var(--c-primary-deep);}
.crumb{padding:20px 0 0;font-size:14px;color:var(--t-sub);display:flex;flex-wrap:wrap;gap:6px;align-items:center;}
.crumb a{color:var(--t-sub);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:var(--t-weak);}
.crumb .cur{color:var(--t-weak);}

/* ---------- hero ---------- */
.page-hero{padding:36px 0 8px;}
.hero-split{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:center;}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--c-teal);background:var(--c-teal-light);padding:6px 12px;border-radius:var(--r-pill);}
.page-hero h1{
  margin-top:18px;
  font-size:34px;font-weight:700;line-height:1.35;letter-spacing:-.01em;
}
.page-hero h1 em{font-style:normal;color:var(--c-primary);}
.hero-lead{margin-top:16px;font-size:17px;line-height:1.85;color:var(--t-sub);max-width:640px;}
.hero-meta{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px;}
.hero-figure{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--border-in);box-shadow:var(--sh-2);background:var(--bg-alt);}
.hero-figure img{width:100%;aspect-ratio:4/3;border:1px solid var(--border-in);}
.hero-figure .fig-cap{
  position:absolute;left:14px;bottom:14px;right:14px;
  background:#fff;border-radius:14px;padding:12px 14px;box-shadow:var(--sh-2);
  border:1px solid var(--border-in);
}
.hero-figure .fig-cap strong{display:block;font-size:14px;font-weight:700;}
.hero-figure .fig-cap span{display:block;font-size:13px;color:var(--t-sub);margin-top:2px;}

/* ---------- compare grid ---------- */
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
.compare-card{
  background:var(--bg-card);border-radius:var(--r-card);
  border:1px solid var(--border-in);box-shadow:var(--sh-1);
  padding:26px 26px 10px;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.compare-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:var(--c-primary-line);}
.compare-card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;padding-bottom:16px;border-bottom:1px solid var(--border);}
.compare-card-head h3{font-size:18px;font-weight:600;line-height:1.5;}
.compare-card-head .idx{
  flex-shrink:0;min-width:34px;height:34px;border-radius:10px;
  background:var(--c-teal-light);color:#0B7A6A;
  font-size:14px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;
}
.kv{display:grid;grid-template-columns:112px minmax(0,1fr);gap:0 16px;}
.kv-row{display:contents;}
.kv-key,.kv-val{
  padding:12px 0;
  border-bottom:1px dashed var(--border);
  font-size:15px;
}
.kv-key{font-size:13px;color:var(--t-sub);}
.kv-val{color:var(--t-main);font-weight:500;}
.kv-row:last-child .kv-key,.kv-row:last-child .kv-val{border-bottom:0;}
.compare-card .card-foot{margin-top:14px;padding-bottom:16px;}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.step{
  background:#fff;border-radius:var(--r-card);border:1px solid var(--border-in);
  box-shadow:var(--sh-1);padding:24px;
  transition:transform var(--ease),box-shadow var(--ease);
}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.step-no{font-size:22px;font-weight:700;color:var(--c-primary);}
.step h3{margin-top:10px;font-size:17px;font-weight:600;}
.step p{margin-top:8px;font-size:15px;color:var(--t-sub);}

/* ---------- faq ---------- */
.faq-list{max-width:900px;}
.faq-item{
  background:#fff;border:1px solid var(--border-in);border-radius:14px;
  margin-bottom:12px;overflow:hidden;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:18px 20px 18px 24px;
  font-size:17px;font-weight:600;line-height:1.6;
  border-left:3px solid var(--c-primary);
  transition:background var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--c-primary-light);}
.faq-item[open] summary{background:var(--c-primary-light);}
.faq-item .sign{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--c-primary-line);color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:600;transition:transform var(--ease),background var(--ease);
}
.faq-item[open] .sign{transform:rotate(180deg);background:#fff;}
.faq-body{padding:4px 24px 20px;font-size:15px;line-height:1.85;color:var(--t-sub);}
.faq-body p+p{margin-top:12px;}

/* ---------- pill bar ---------- */
.pill-bar{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;
  padding:26px;background:#fff;border-radius:var(--r-card);
  border:1px solid var(--border-in);box-shadow:var(--sh-1);
}
.pill-bar .bar-label{font-size:14px;color:var(--t-sub);margin-right:6px;}
.pill{
  display:inline-flex;align-items:center;height:40px;padding:0 20px;
  border-radius:var(--r-pill);font-size:14px;font-weight:500;
  background:#fff;color:var(--t-sub);border:1px solid var(--border);
  transition:all var(--ease);
}
.pill:hover{color:var(--c-primary);border-color:var(--c-primary-line);background:var(--c-primary-light);transform:translateY(-1px);}
.pill.active{background:var(--c-primary);color:#fff;border-color:var(--c-primary);box-shadow:0 6px 16px rgba(43,108,230,.24);}
.pill.active:hover{background:var(--c-primary-deep);color:#fff;}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--c-primary-light);
  border-radius:20px;
  padding:40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  border:1px solid var(--c-primary-line);
}
.cta-band h2{font-size:23px;font-weight:600;line-height:1.45;max-width:620px;}
.cta-band p{margin-top:8px;font-size:15px;color:var(--t-sub);}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.share-group{display:flex;gap:8px;margin-left:4px;}
.share-btn{
  width:36px;height:36px;border-radius:50%;
  border:1px solid var(--c-primary-line);background:#fff;color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;
}
.share-btn:hover{background:var(--c-primary);color:#fff;border-color:var(--c-primary);}

/* ---------- footer ---------- */
.site-footer{background:var(--footer-bg);color:rgba(255,255,255,.72);margin-top:var(--sp-section);padding:56px 0 24px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;}
.footer-brand .logo-text{font-size:17px;}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:320px;}
.footer-col h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.72);line-height:2.2;transition:color var(--ease),transform var(--ease);}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-note{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);}
.footer-bottom{
  margin-top:40px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.72);
}

/* ---------- toast ---------- */
.toast{
  position:fixed;left:50%;bottom:32px;transform:translate(-50%,16px);
  background:var(--t-main);color:#fff;font-size:14px;
  padding:12px 20px;border-radius:var(--r-btn);z-index:200;
  opacity:0;visibility:hidden;transition:all 240ms ease;box-shadow:var(--sh-2);
}
.toast.show{opacity:1;visibility:visible;transform:translate(-50%,0);}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-links{display:none;}
  .burger{display:inline-flex;}
  :root{--sp-section:56px;}
  .hero-split{grid-template-columns:1fr;gap:32px;}
  .hero-figure{order:2;}
  .page-hero h1{font-size:30px;}
  .compare-grid{grid-template-columns:1fr;gap:20px;}
  .steps{grid-template-columns:1fr;gap:18px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (min-width:1024px){
  .drawer,.overlay{display:none;}
}
@media (max-width:767px){
  :root{--sp-section:44px;}
  .container{padding:0 18px;}
  .nav-inner{height:56px;}
  .nav-right .btn-sm{display:none;}
  body{font-size:15px;}
  .page-hero{padding:26px 0 4px;}
  .page-hero h1{font-size:28px;}
  .hero-lead{font-size:15px;}
  .section-head h2{font-size:21px;}
  .compare-card{padding:20px 18px 6px;}
  .kv{grid-template-columns:1fr;gap:0;}
  .kv-key{padding:10px 0 0;border-bottom:0;}
  .kv-val{padding:2px 0 12px;border-bottom:1px dashed var(--border);}
  .kv-row:last-child .kv-key,.kv-row:last-child .kv-val{border-bottom:0;}
  .kv-row:last-child .kv-val{padding-bottom:6px;}
  .cta-band{padding:26px;}
  .cta-band h2{font-size:19px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .faq-item summary{font-size:16px;padding:16px 16px 16px 18px;}
  .faq-body{padding:2px 18px 18px;}
}
@media (max-width:480px){
  .drawer{width:92vw;}
  .logo-text{font-size:15px;}
  .btn{padding:0 16px;font-size:14px;}
}