/* roulang page: index */
:root{
  --brand:#1F4E8C;
  --brand-600:#17416F;
  --brand-050:#EAF1FA;
  --accent:#C2703A;
  --accent-050:#FBF1E9;
  --bg:#FFFFFF;
  --bg-soft:#F6F8FB;
  --line:#E4E9F0;
  --ink:#0F1B2A;
  --ink-2:#4A5A6E;
  --ok:#2F7D5D;
  --warn:#B8860B;
  --err:#B4342C;
  --r-card:12px;
  --r-img:16px;
  --r-btn:10px;
  --shadow:0 1px 2px rgba(15,27,42,.05),0 12px 32px -12px rgba(31,78,140,.16);
  --shadow-hover:0 1px 2px rgba(15,27,42,.05),0 20px 44px -14px rgba(31,78,140,.28);
  --font:"Noto Sans SC","PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","Noto Sans SC",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font:inherit;cursor:pointer;background:none;border:0;color:inherit;}
input,textarea,select{font:inherit;color:inherit;}
:focus-visible{outline:3px solid rgba(31,78,140,.18);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media(min-width:768px){.container{padding:0 32px;}}

.section{padding:56px 0;}
@media(min-width:1024px){.section{padding:96px 0;}}
section[id],div[id="contact"]{scroll-margin-top:88px;}

h1{font-size:clamp(28px,4vw,44px);line-height:1.25;font-weight:700;letter-spacing:-.01em;}
h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;letter-spacing:-.005em;}
h3{font-size:20px;line-height:1.4;font-weight:600;}

.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;letter-spacing:.06em;color:var(--brand);}
.eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);display:inline-block;}
.section-head{max-width:700px;margin-bottom:40px;}
.section-head h2{margin-top:14px;}
.section-sub{margin-top:14px;color:var(--ink-2);font-size:16px;max-width:640px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;border:1px solid var(--brand);}
.btn-primary:hover{background:var(--brand-600);border-color:var(--brand-600);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--brand);border:1px solid var(--line);}
.btn-ghost:hover{background:var(--brand-050);border-color:var(--brand);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.link-cta{display:inline-block;color:var(--accent);font-weight:600;border-bottom:1px solid rgba(194,112,58,.4);padding-bottom:2px;}
.link-cta:hover{border-bottom-color:var(--accent);color:var(--brand);}

.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--ink);}
.logo-mark{position:relative;display:inline-block;width:22px;height:22px;border:2px solid var(--brand);border-radius:7px;}
.logo-mark i{position:absolute;inset:5px;border-radius:2px;background:var(--accent);display:block;}
.logo:hover .logo-mark{border-color:var(--brand-600);}
.nav-main{display:none;align-items:center;gap:32px;}
@media(min-width:1024px){.nav-main{display:flex;}}
.nav-link{position:relative;padding:6px 0;font-size:17px;letter-spacing:.02em;color:var(--ink-2);}
.nav-link:hover{color:var(--brand);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--accent);}
.nav-actions{display:none;align-items:center;gap:12px;}
@media(min-width:1024px){.nav-actions{display:flex;}}
.nav-toggle{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;width:44px;height:44px;border-radius:10px;}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
@media(min-width:1024px){.nav-toggle{display:none;}}

.drawer{position:fixed;top:72px;right:0;bottom:0;left:0;z-index:55;background:#fff;padding:8px 20px 40px;overflow-y:auto;}
.drawer[hidden]{display:none;}
.drawer a{display:flex;align-items:center;justify-content:space-between;min-height:56px;font-size:17px;color:var(--ink);border-bottom:1px solid var(--line);}
.drawer a:hover{color:var(--brand);}
.drawer a span.arrow{color:var(--accent);font-size:14px;}
.drawer-cta-wrap{display:grid;gap:12px;margin-top:28px;}
.drawer-cta-wrap .btn{width:100%;}

.hero{padding:48px 0 64px;background:linear-gradient(180deg,#fff 0%,var(--bg-soft) 100%);}
@media(min-width:1024px){.hero{padding:76px 0 96px;}}
.hero-grid{display:grid;gap:44px;align-items:center;}
@media(min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:56px;}}
.hero-copy h1{margin-top:18px;}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:var(--ink-2);max-width:520px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-stats{display:flex;flex-wrap:wrap;margin-top:36px;}
.hero-stats li{padding:0 22px;border-left:1px solid var(--line);}
.hero-stats li:first-child{padding-left:0;border-left:0;}
.hero-stats strong{display:block;font-family:var(--font-num);font-size:26px;font-weight:700;line-height:1.15;color:var(--brand);}
.hero-stats span{font-size:13px;color:var(--ink-2);}
.hero-visual{position:relative;}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--shadow);}
.hero-float{position:absolute;left:20px;bottom:20px;min-width:180px;padding:16px 20px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow);}
.hero-float-title{display:block;font-size:13px;color:var(--ink-2);}
.hero-float-num{display:block;font-family:var(--font-num);font-size:30px;font-weight:700;line-height:1.1;color:var(--accent);}
.hero-float-desc{display:block;font-size:13px;color:var(--ink-2);}

.card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow);overflow:hidden;}

.sell-grid{display:grid;gap:24px;}
@media(min-width:1024px){.sell-grid{grid-template-columns:7fr 5fr;}}
.sell-main{padding-bottom:28px;}
.sell-main img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.sell-main h3{padding:24px 28px 0;font-size:22px;}
.sell-main p{padding:12px 28px 0;color:var(--ink-2);font-size:16px;}
.sell-side{padding:28px;background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--r-card);}
.sell-side h3{font-size:18px;}
.point-list{margin-top:20px;display:grid;gap:20px;}
.point-list li{display:flex;gap:14px;}
.point-list .num{font-family:var(--font-num);font-size:15px;font-weight:700;color:var(--accent);line-height:1.9;}
.point-list h4{font-size:16px;font-weight:600;line-height:1.5;margin-bottom:4px;}
.point-list p{font-size:14px;line-height:1.7;color:var(--ink-2);}
.step-row{display:grid;margin-top:52px;border-top:1px solid var(--line);}
@media(min-width:768px){.step-row{grid-template-columns:repeat(4,1fr);}}
.step-row li{padding:24px 22px;border-bottom:1px solid var(--line);}
@media(min-width:768px){
  .step-row li{border-bottom:0;border-left:1px solid var(--line);}
  .step-row li:first-child{border-left:0;padding-left:0;}
}
.step-row .num{font-family:var(--font-num);font-size:15px;font-weight:700;color:var(--accent);}
.step-row h4{margin-top:8px;font-size:16px;font-weight:600;}
.step-row p{margin-top:6px;font-size:14px;color:var(--ink-2);line-height:1.7;}
.sell-cta{margin-top:36px;}

.demo{background:var(--bg-soft);}
.demo-grid{display:grid;gap:44px;align-items:center;}
@media(min-width:1024px){.demo-grid{grid-template-columns:1fr 1fr;gap:56px;}}
.demo-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--shadow);}
.demo-copy h2{margin-top:14px;}
.demo-copy .section-sub{margin-top:16px;}
.check-list{margin-top:26px;display:grid;gap:14px;}
.check-list li{display:flex;align-items:flex-start;gap:12px;font-size:16px;color:var(--ink-2);line-height:1.7;}
.check-list .tick{flex:0 0 auto;width:20px;height:20px;margin-top:5px;border-radius:50%;background:var(--brand-050);color:var(--brand);font-size:12px;font-weight:700;display:grid;place-items:center;}

.proof-wall{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;margin-bottom:44px;}
@media(min-width:640px){.proof-wall{grid-template-columns:repeat(4,1fr);}}
.proof-wall span{background:#fff;padding:26px 12px;text-align:center;font-size:15px;font-weight:600;letter-spacing:.06em;color:#8A97A8;}
.quote-grid{display:grid;gap:28px;}
@media(min-width:1024px){.quote-grid{grid-template-columns:repeat(3,1fr);}}
.quote{border-left:3px solid var(--brand);padding-left:20px;}
.quote p{font-size:16px;line-height:1.8;color:var(--ink);}
.quote cite{display:block;margin-top:14px;font-style:normal;font-size:13px;color:var(--ink-2);}

.price-grid{display:grid;gap:24px;}
@media(min-width:1024px){.price-grid{grid-template-columns:repeat(3,1fr);}}
.price-card{position:relative;display:flex;flex-direction:column;padding:32px 28px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow);transition:box-shadow .2s ease,transform .2s ease;}
.price-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.price-card.featured{border:2px solid var(--brand);}
.price-tag{position:absolute;top:-13px;left:28px;padding:4px 12px;border-radius:999px;background:var(--brand);color:#fff;font-size:12px;letter-spacing:.06em;}
.price-name{font-size:18px;font-weight:600;}
.price-amount{margin-top:18px;font-family:var(--font-num);font-size:40px;font-weight:700;line-height:1.1;color:var(--ink);}
.price-amount .unit{margin-left:6px;font-family:var(--font);font-size:14px;font-weight:500;color:var(--ink-2);}
.price-desc{margin-top:10px;font-size:14px;color:var(--ink-2);line-height:1.7;}
.price-feats{margin:22px 0 28px;display:grid;gap:10px;font-size:14px;color:var(--ink-2);}
.price-feats li{display:flex;gap:10px;align-items:flex-start;line-height:1.7;}
.price-feats li::before{content:"·";color:var(--accent);font-weight:700;}
.price-card .btn{width:100%;margin-top:auto;}
@media(max-width:1023px){
  .price-card.featured{border-width:1px;}
}

.news-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:36px;}
.news-grid{display:grid;gap:24px;}
@media(min-width:1024px){
  .news-grid{grid-template-columns:1.15fr 1fr 1fr;grid-template-rows:auto auto;}
}
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease;}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.news-card:hover .news-title{color:var(--brand);}
.news-card:nth-child(n+5){display:none;}
@media(min-width:1024px){.news-card--lead{grid-row:span 2;}}
.news-thumb{overflow:hidden;background:var(--bg-soft);}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease;}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{display:flex;flex:1;flex-direction:column;gap:10px;padding:20px 22px 24px;}
.badge{align-self:flex-start;padding:4px 12px;border-radius:999px;background:var(--brand-050);color:var(--brand);font-size:12px;letter-spacing:.04em;}
.news-title{font-size:17px;font-weight:600;line-height:1.5;color:var(--ink);transition:color .18s ease;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card--lead .news-title{font-size:21px;}
.news-desc{font-size:14px;line-height:1.7;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-date{margin-top:auto;padding-top:10px;font-family:var(--font-num);font-size:13px;color:#93A1B3;}
.news-empty{grid-column:1/-1;padding:56px 24px;text-align:center;background:var(--bg-soft);border:1px dashed var(--line);border-radius:var(--r-card);}
.news-empty p{color:var(--ink-2);margin-bottom:18px;}

.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;padding:22px 0;text-align:left;font-size:17px;font-weight:600;color:var(--ink);transition:color .18s ease;}
.faq-q:hover{color:var(--brand);}
.faq-icon{position:relative;flex:0 0 auto;width:24px;height:24px;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--accent);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.faq-icon::before{left:3px;right:3px;top:11px;height:2px;}
.faq-icon::after{top:3px;bottom:3px;left:11px;width:2px;}
.faq-q[aria-expanded="true"] .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease;}
.faq-a p{padding:0 0 24px;max-width:760px;font-size:16px;color:var(--ink-2);}

.contact{background:var(--bg-soft);}
.contact-grid{display:grid;gap:44px;}
@media(min-width:1024px){.contact-grid{grid-template-columns:5fr 7fr;gap:56px;}}
.contact-info h2{margin-top:14px;}
.contact-list{margin-top:26px;display:grid;gap:18px;}
.contact-list li{display:flex;gap:14px;align-items:flex-start;}
.contact-list .k{flex:0 0 88px;font-size:14px;color:var(--ink-2);}
.contact-list .v{font-size:15px;color:var(--ink);font-weight:500;}
.form-panel{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow);padding:28px;}
@media(min-width:768px){.form-panel{padding:36px;}}
.form-row{display:grid;gap:20px;}
.form-row + .form-row{margin-top:20px;}
@media(min-width:640px){.form-row.two{grid-template-columns:1fr 1fr;}}
.field label{display:block;margin-bottom:8px;font-size:14px;font-weight:600;color:var(--ink);}
.field input,.field textarea,.field select{width:100%;height:48px;padding:0 16px;background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);transition:border-color .18s ease,box-shadow .18s ease;}
.field textarea{height:auto;min-height:120px;padding:14px 16px;line-height:1.7;resize:vertical;}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,78,140,.18);}
.field.has-error input,.field.has-error textarea{border-color:var(--err);}
.field-error{display:none;margin-top:6px;font-size:13px;color:var(--err);}
.field.has-error .field-error{display:block;}
.form-foot{display:grid;gap:14px;margin-top:26px;}
.form-foot .btn{width:100%;}
@media(min-width:640px){.form-foot .btn{width:auto;justify-self:start;}}
.form-note{font-size:13px;color:var(--ink-2);}
.form-ok{display:none;margin-top:18px;padding:14px 18px;border-radius:var(--r-btn);background:rgba(47,125,93,.08);color:var(--ok);font-size:14px;}
.form-ok.is-visible{display:block;}

.site-footer{margin-top:56px;background:#0E1621;color:#C6CFDA;padding:64px 0 0;}
@media(min-width:1024px){.site-footer{margin-top:96px;}}
.footer-grid{display:grid;gap:36px;}
@media(min-width:768px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;}}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:#fff;}
.footer-brand .logo-mark{border-color:#fff;}
.footer-brand .logo-mark i{background:var(--accent);}
.footer-desc{margin-top:16px;max-width:300px;font-size:14px;line-height:1.8;color:#93A1B3;}
.footer-title{margin-bottom:16px;font-size:14px;font-weight:600;letter-spacing:.06em;color:#fff;}
.footer-links{display:grid;gap:12px;font-size:14px;}
.footer-links a:hover{color:var(--accent);}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;margin-top:48px;padding:22px 0;border-top:1px solid rgba(255,255,255,.08);font-size:13px;color:#7E8B9B;}

.float-cta{position:fixed;right:24px;bottom:32px;z-index:50;display:grid;gap:10px;opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .25s ease,transform .25s ease,visibility .25s ease;}
.float-cta.is-visible{opacity:1;visibility:visible;transform:none;}
.float-link{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 20px;border:1px solid var(--line);border-radius:999px;background:#fff;box-shadow:var(--shadow);font-size:14px;font-weight:600;color:var(--brand);transition:box-shadow .2s ease,background-color .2s ease;}
.float-link--solid{background:var(--brand);border-color:var(--brand);color:#fff;}
.float-link:hover{box-shadow:var(--shadow-hover);}
@media(max-width:767px){
  body{padding-bottom:56px;}
  .float-cta{right:0;left:0;bottom:0;grid-auto-flow:column;grid-auto-columns:1fr;gap:1px;background:var(--line);border-top:1px solid var(--line);}
  .float-link{height:56px;border:0;border-radius:0;box-shadow:none;}
  .float-link:hover{box-shadow:none;}
}

/* roulang page: article */
:root{
  --brand:#1F4E8C;
  --brand-600:#17416F;
  --brand-050:#EAF1FA;
  --accent:#C2703A;
  --accent-050:#FBF0E8;
  --bg:#FFFFFF;
  --bg-soft:#F6F8FB;
  --line:#E4E9F0;
  --ink:#0F1B2A;
  --ink-2:#4A5A6E;
  --ok:#2F7D5D;
  --warn:#B8860B;
  --err:#B4342C;
  --r-card:12px;
  --r-img:16px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(15,27,42,.05);
  --shadow-2:0 12px 32px -12px rgba(31,78,140,.16);
  --shadow-2h:0 18px 40px -14px rgba(31,78,140,.26);
  --sp-section:96px;
  --sp-section-m:56px;
  --font:"Noto Sans SC","PingFang SC","HarmonyOS Sans","Microsoft YaHei",Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-600)}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(31,78,140,.18);outline-offset:2px;border-radius:4px}
.container{max-width:1200px;margin:0 auto;padding:0 20px;width:100%}
@media (min-width:768px){.container{padding:0 32px}}
.section{padding:var(--sp-section-m) 0}
@media (min-width:992px){.section{padding:var(--sp-section) 0}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:19px;letter-spacing:.02em}
.logo:hover{color:var(--ink)}
.logo-mark{width:26px;height:26px;border:1.5px solid var(--brand);border-radius:8px;display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto}
.logo-mark i{display:block;width:10px;height:10px;background:var(--accent);border-radius:2px;transform:rotate(45deg)}
.nav-main{display:none;align-items:center;gap:30px;margin-left:8px}
.nav-link{
  position:relative;color:var(--ink-2);font-size:17px;letter-spacing:.02em;padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:500}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:none;align-items:center;gap:12px;margin-left:auto}
.nav-toggle{
  margin-left:auto;width:46px;height:46px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:1.6px;background:var(--ink);border-radius:2px}
.nav-toggle:hover{background:var(--brand-050)}
@media (min-width:1024px){
  .nav-main{display:flex}
  .header-actions{display:flex}
  .nav-toggle{display:none}
}
.drawer{
  position:fixed;inset:72px 0 0 0;background:#fff;z-index:55;display:none;flex-direction:column;
  padding:8px 20px 32px;overflow-y:auto;
}
.drawer.is-open{display:flex}
.drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;min-height:56px;border-bottom:1px solid var(--line);
  color:var(--ink);font-size:17px;
}
.drawer a.drawer-link:hover{color:var(--brand)}
.drawer-cta{display:flex;flex-direction:column;gap:12px;margin-top:24px}
@media (min-width:1024px){.drawer{display:none!important}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;
  border-radius:var(--r-btn);font-size:15px;font-weight:500;line-height:1;cursor:pointer;
  border:1px solid transparent;transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px)}
.btn-outline{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-outline:hover{background:var(--brand-050);border-color:#c9d9ec;color:var(--brand)}
.btn-soft{background:var(--brand-050);color:var(--brand)}
.btn-soft:hover{background:#dde9f8;color:var(--brand-600)}
.btn-block{width:100%}
.btn-sm{height:42px;padding:0 16px;font-size:14px}
.text-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-weight:500;
  border-bottom:1px solid rgba(194,112,58,.4);padding-bottom:2px;
}
.text-link:hover{color:#9d5827;border-bottom-color:#9d5827}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--bg-soft);border-bottom:1px solid var(--line)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:16px 0;font-size:13px;color:var(--ink-2)}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#b9c3d1}
.crumb .current{color:var(--ink);max-width:70ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头部 ---------- */
.article-head{padding:40px 0 8px}
.article-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--brand-050);color:var(--brand);font-size:13px;letter-spacing:.04em;
}
.article-head h1{
  font-size:clamp(28px,4vw,44px);line-height:1.25;font-weight:700;letter-spacing:-.01em;
  margin:18px 0 18px;max-width:24ch;color:var(--ink);
}
@media (max-width:640px){.article-head h1{max-width:none}}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;color:var(--ink-2);font-size:14px}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#c3ccd9;display:inline-block}
.article-meta strong{color:var(--ink);font-weight:500}
.head-rule{height:1px;background:var(--line);margin-top:28px}

/* ---------- 文章主体布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr);gap:40px;padding:40px 0 0;
}
@media (min-width:1080px){
  .article-layout{grid-template-columns:minmax(0,760px) 300px;gap:56px;justify-content:space-between}
}
.article-main{min-width:0}

/* 富文本排版 */
.article-body{font-size:17px;line-height:1.9;color:var(--ink);word-wrap:break-word}
.article-body > * + *{margin-top:20px}
.article-body p{margin:0}
.article-body h2{
  font-size:clamp(22px,2.4vw,28px);line-height:1.35;font-weight:700;color:var(--ink);
  margin-top:44px;padding-left:14px;border-left:4px solid var(--accent);scroll-margin-top:96px;
}
.article-body h3{font-size:20px;line-height:1.4;font-weight:700;color:var(--ink);margin-top:32px;scroll-margin-top:96px}
.article-body h4{font-size:17px;font-weight:700;color:var(--ink);margin-top:24px}
.article-body ul,.article-body ol{margin-top:16px;display:grid;gap:10px}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;color:var(--ink)}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:13px;width:7px;height:7px;border-radius:2px;background:var(--accent);transform:rotate(45deg);
}
.article-body ol{counter-reset:item}
.article-body ol li{counter-increment:item;padding-left:30px}
.article-body ol li::before{
  content:counter(item,decimal-leading-zero);position:absolute;left:0;top:0;color:var(--accent);font-weight:700;font-size:14px;line-height:1.9;
}
.article-body img{border-radius:var(--r-img);margin:28px 0;box-shadow:var(--shadow-1)}
.article-body figure{margin:28px 0}
.article-body figcaption{font-size:13px;color:var(--ink-2);text-align:center;margin-top:10px}
.article-body blockquote{
  margin:28px 0;padding:18px 22px;background:var(--bg-soft);border-left:3px solid var(--brand);
  border-radius:0 var(--r-card) var(--r-card) 0;color:var(--ink-2);
}
.article-body blockquote p{color:var(--ink-2)}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(31,78,140,.28)}
.article-body a:hover{color:var(--brand-600);border-bottom-color:var(--brand-600)}
.article-body strong{font-weight:700}
.article-body hr{border:0;height:1px;background:var(--line);margin:36px 0}
.article-body table{width:100%;border-collapse:collapse;display:block;overflow-x:auto;font-size:15px;margin:24px 0}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
.article-body th{background:var(--bg-soft);font-weight:600;color:var(--ink)}
.article-body code{background:var(--bg-soft);border:1px solid var(--line);border-radius:6px;padding:2px 6px;font-size:14px}
.article-body pre{background:#0E1621;color:#e6edf6;padding:18px;border-radius:var(--r-card);overflow-x:auto;font-size:14px}

/* 空态 */
.article-empty{
  border:1px dashed var(--line);border-radius:var(--r-card);background:var(--bg-soft);
  padding:56px 24px;text-align:center;
}
.article-empty h2{font-size:22px;font-weight:700;margin-bottom:10px}
.article-empty p{color:var(--ink-2);max-width:44ch;margin:0 auto 22px}

/* ---------- 侧栏 ---------- */
.article-side{display:grid;gap:20px;align-content:start}
@media (min-width:1080px){.article-side{position:sticky;top:96px}}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--shadow-1);
}
.side-card h3{font-size:15px;font-weight:700;letter-spacing:.04em;color:var(--ink);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:8px;height:8px;background:var(--accent);border-radius:2px;transform:rotate(45deg);display:inline-block}
.toc-list{display:grid;gap:2px}
.toc-link{
  display:block;padding:9px 0 9px 12px;font-size:14px;color:var(--ink-2);border-left:2px solid var(--line);line-height:1.6;
}
.toc-link:hover{color:var(--brand);border-left-color:var(--brand);background:var(--brand-050)}
.toc-link.is-sub{padding-left:26px;font-size:13px}
.side-links{display:grid;gap:2px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 0;border-bottom:1px solid var(--line);
  font-size:14px;color:var(--ink);
}
.side-links a:last-child{border-bottom:0}
.side-links a:hover{color:var(--brand)}
.side-links a span.arrow{color:var(--accent);font-size:13px}
.side-cta{background:var(--brand-050);border:1px solid #d8e5f5}
.side-cta p{font-size:14px;color:var(--ink-2);margin:8px 0 16px;line-height:1.75}
.side-cta h3::before{background:var(--brand)}

/* ---------- 标签 ---------- */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:44px;padding-top:24px;border-top:1px solid var(--line)}
.tag-row .label{font-size:14px;color:var(--ink-2);margin-right:4px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--bg-soft);border:1px solid var(--line);font-size:13px;color:var(--ink-2);
}
.tag:hover{background:var(--brand-050);color:var(--brand);border-color:#cfdff2}

/* ---------- 上一篇 / 下一篇 ---------- */
.prevnext{display:grid;gap:16px;margin-top:32px;grid-template-columns:1fr}
@media (min-width:768px){.prevnext{grid-template-columns:1fr 1fr}}
.prevnext a{
  display:block;border:1px solid var(--line);border-radius:var(--r-card);padding:18px 20px;background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.prevnext a:hover{border-color:#cfdff2;box-shadow:var(--shadow-2);transform:translateY(-2px)}
.prevnext .dir{font-size:13px;color:var(--accent);letter-spacing:.06em}
.prevnext .ttl{font-size:16px;font-weight:600;color:var(--ink);margin-top:8px;line-height:1.5}
.prevnext a:hover .ttl{color:var(--brand)}

/* ---------- 相关推荐 ---------- */
.related{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.related .sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px}
.related h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700}
.related .sec-head p{color:var(--ink-2);font-size:14px;margin-top:8px}
.card-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media (min-width:768px){.card-grid{grid-template-columns:repeat(3,1fr)}}
.card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;height:100%;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#cfdff2}
.card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--brand-050)}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .thumb img{transform:scale(1.03)}
.card .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card .pill{
  align-self:flex-start;display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--brand-050);color:var(--brand);font-size:12px;letter-spacing:.03em;
}
.card h3{font-size:17px;line-height:1.5;font-weight:600;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card:hover h3{color:var(--brand)}
.card .desc{font-size:14px;color:var(--ink-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card .foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-2);padding-top:4px}

/* ---------- 底部 CTA ---------- */
.cta-band{padding:64px 0}
.cta-inner{
  background:var(--brand-050);border:1px solid #d8e5f5;border-radius:20px;
  padding:40px 28px;display:grid;gap:24px;
}
@media (min-width:900px){
  .cta-inner{grid-template-columns:1.4fr 1fr;align-items:center;padding:48px 56px}
}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;font-weight:700;color:var(--ink)}
.cta-inner p{color:var(--ink-2);margin-top:12px;font-size:15px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media (max-width:520px){.cta-actions .btn{width:100%}}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;z-index:50;opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.float-cta.is-show{opacity:1;visibility:visible}
.float-cta{left:20px;right:20px;bottom:16px;display:flex;gap:10px}
.float-cta .btn{flex:1;height:52px}
@media (min-width:1024px){
  .float-cta{left:auto;right:24px;bottom:96px;flex-direction:column;width:150px}
  .float-cta .btn{width:100%}
}
@media (max-width:1023px){
  .float-cta{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:8px;box-shadow:var(--shadow-2)}
}

/* ---------- 页脚 ---------- */
.site-footer{background:#0E1621;color:#c6cfdb;margin-top:0}
.site-footer .container{padding-top:56px;padding-bottom:24px}
.footer-grid{display:grid;gap:36px;grid-template-columns:1fr}
@media (min-width:768px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:18px}
.footer-brand .logo-mark{border-color:#4d6b93}
.footer-brand .logo-mark i{background:var(--accent)}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:#93a1b3;max-width:34ch}
.footer-title{font-size:14px;font-weight:600;color:#fff;letter-spacing:.06em;margin-bottom:16px}
.footer-links{display:grid;gap:10px}
.footer-links li{font-size:14px;color:#93a1b3}
.footer-links a{color:#93a1b3}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.09);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:#7b8899;
}

/* roulang page: category1 */
/* ================= 设计变量 ================= */
:root{
  --brand:#1F4E8C;
  --brand-600:#17416F;
  --brand-050:#EAF1FA;
  --accent:#C2703A;
  --bg:#FFFFFF;
  --bg-soft:#F6F8FB;
  --line:#E4E9F0;
  --ink:#0F1B2A;
  --ink-2:#4A5A6E;
  --ok:#2F7D5D;
  --warn:#B8860B;
  --err:#B4342C;
  --r-card:12px;
  --r-img:16px;
  --r-btn:10px;
  --shadow-sm:0 1px 2px rgba(15,27,42,.05);
  --shadow-md:0 1px 2px rgba(15,27,42,.05),0 12px 32px -12px rgba(31,78,140,.16);
  --shadow-lg:0 1px 2px rgba(15,27,42,.05),0 18px 40px -14px rgba(31,78,140,.28);
  --container:1200px;
}

/* ================= 基础 reset ================= */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","HarmonyOS Sans","Microsoft YaHei",-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
:focus-visible{outline:3px solid rgba(31,78,140,.18);outline-offset:2px;border-radius:8px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 32px;}}

/* ================= 头部导航 ================= */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);}
.header-inner{display:flex;align-items:center;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--ink);white-space:nowrap;}
.brand:hover{color:var(--ink);}
.logo-mark{width:22px;height:22px;display:inline-flex;align-items:center;justify-content:center;border:1.5px solid var(--brand);border-radius:7px;flex:none;}
.logo-mark i{display:block;width:2px;height:11px;background:var(--accent);border-radius:1px;}
.nav-main{display:flex;align-items:center;gap:26px;margin-left:6px;}
.nav-link{position:relative;font-size:17px;letter-spacing:.02em;color:var(--ink);padding:24px 0;white-space:nowrap;}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:10px;margin-left:auto;}
.nav-toggle-bars{position:relative;width:18px;height:12px;display:block;}
.nav-toggle-bars span{position:absolute;left:0;right:0;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle-bars span:nth-child(1){top:0;}
.nav-toggle-bars span:nth-child(2){top:5px;}
.nav-toggle-bars span:nth-child(3){top:10px;}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}
.mobile-drawer{position:fixed;left:0;right:0;top:72px;bottom:0;background:#fff;z-index:80;padding:8px 20px 48px;overflow-y:auto;}
.mobile-drawer a{display:block;padding:18px 4px;font-size:17px;border-bottom:1px solid var(--line);min-height:48px;}
.mobile-drawer .drawer-cta{margin-top:24px;display:flex;flex-direction:column;gap:12px;}
.mobile-drawer .drawer-cta a{border-bottom:0;padding:0;}

/* ================= 按钮 ================= */
.btn{display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;letter-spacing:.02em;border:1px solid transparent;transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;white-space:nowrap;}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px);}
.btn-ghost{border-color:var(--line);background:#fff;color:var(--ink);}
.btn-ghost:hover{border-color:var(--brand);background:var(--brand-050);color:var(--brand);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn-full{width:100%;}
.link-cta{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-weight:600;border-bottom:1px solid rgba(194,112,58,.45);padding-bottom:2px;}
.link-cta:hover{color:var(--brand);border-bottom-color:var(--brand);}

/* ================= 面包屑 & 子页头 ================= */
.sub-hero{position:relative;background:var(--bg-soft);border-bottom:1px solid var(--line);overflow:hidden;padding:44px 0 52px;min-height:280px;}
.sub-hero::before{
  content:"";position:absolute;right:-60px;top:-40px;width:560px;height:560px;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:56px 56px;opacity:.65;
  -webkit-mask-image:radial-gradient(circle at 70% 30%,#000,transparent 72%);
  mask-image:radial-gradient(circle at 70% 30%,#000,transparent 72%);
  pointer-events:none;
}
.sub-hero .container{position:relative;z-index:1;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);margin-bottom:26px;}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#B9C4D2;}
.breadcrumb [aria-current="page"]{color:var(--ink);font-weight:600;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;color:var(--brand);background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 14px;margin-bottom:18px;}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}
.sub-hero h1{font-size:clamp(28px,4vw,42px);line-height:1.25;letter-spacing:.01em;max-width:820px;}
.sub-hero-lead{margin-top:16px;max-width:760px;color:var(--ink-2);font-size:17px;line-height:1.85;}

/* ================= 主体两列 ================= */
.layout{display:grid;grid-template-columns:1fr;gap:36px;padding:52px 0 0;}
@media (min-width:1024px){
  .layout{grid-template-columns:236px minmax(0,1fr);gap:56px;padding:76px 0 0;}
}
.anchor-rail{align-self:start;}
@media (min-width:1024px){.anchor-rail{position:sticky;top:104px;}}
.rail-title{font-size:13px;letter-spacing:.12em;color:var(--ink-2);margin-bottom:12px;}
.rail-list{display:flex;flex-wrap:wrap;gap:8px;}
@media (min-width:1024px){
  .rail-list{display:block;border-top:1px solid var(--line);}
  .rail-list li{border-bottom:1px solid var(--line);}
}
.rail-link{display:block;padding:10px 12px;font-size:15px;color:var(--ink-2);border-radius:8px;border-left:2px solid transparent;transition:background-color .2s ease,color .2s ease,border-color .2s ease;}
.rail-link:hover{color:var(--brand);background:var(--brand-050);}
.rail-link.is-active{color:var(--brand);font-weight:600;border-left-color:var(--accent);background:var(--brand-050);}
.rail-card{margin-top:24px;background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--r-card);padding:18px;}
.rail-card p{font-size:14px;color:var(--ink-2);line-height:1.8;}
.rail-card strong{display:block;color:var(--ink);font-size:15px;margin-bottom:6px;}

/* ================= 内容区块 ================= */
.content-col{min-width:0;}
.block{padding-bottom:46px;margin-bottom:46px;border-bottom:1px solid var(--line);scroll-margin-top:104px;}
.block:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0;}
.block h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;letter-spacing:.01em;margin-bottom:16px;}
.block > p{color:var(--ink-2);max-width:760px;}
.block > p + p{margin-top:14px;}

/* 编号横排列表 */
.pick-list{margin-top:26px;border-top:1px solid var(--line);}
.pick-item{display:grid;gap:6px;padding:22px 0;border-bottom:1px solid var(--line);}
@media (min-width:768px){
  .pick-item{grid-template-columns:72px 220px minmax(0,1fr);gap:24px;align-items:baseline;}
}
.pick-num{font-size:22px;font-weight:700;color:var(--accent);letter-spacing:.04em;line-height:1.2;}
.pick-item h3{font-size:17px;font-weight:600;}
.pick-item p{color:var(--ink-2);font-size:15px;line-height:1.85;}

/* 图片与图注 */
.figure-block{margin-top:28px;}
.figure-block img{width:100%;border-radius:var(--r-img);box-shadow:var(--shadow-md);}
.figure-block figcaption{margin-top:12px;font-size:13px;color:var(--ink-2);}

/* 非对称卡片区 */
.matrix{display:grid;gap:20px;margin-top:28px;}
@media (min-width:900px){
  .matrix{grid-template-columns:1.3fr 1fr;grid-template-areas:"wide a" "wide b";}
  .matrix-card--wide{grid-area:wide;}
  .matrix-card--a{grid-area:a;}
  .matrix-card--b{grid-area:b;}
}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--shadow-sm);transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:#D6DEE9;}
.card h3{font-size:19px;line-height:1.4;margin-bottom:10px;}
.card p{color:var(--ink-2);font-size:15px;line-height:1.85;}
.card-img{margin:-26px -26px 22px;border-radius:var(--r-card) var(--r-card) 0 0;overflow:hidden;}
.card-img img{width:100%;height:190px;object-fit:cover;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;}
.tag{display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.04em;color:var(--brand);background:var(--brand-050);border-radius:999px;padding:4px 12px;}
.tag--accent{color:var(--accent);background:rgba(194,112,58,.1);}
.fact-list{margin-top:16px;border-top:1px solid var(--line);}
.fact-list li{display:flex;justify-content:space-between;gap:16px;padding:10px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--ink-2);}
.fact-list li span:last-child{color:var(--ink);font-weight:600;}

/* 步骤条 */
.steps{display:grid;gap:22px;margin-top:30px;}
@media (min-width:768px){.steps{grid-template-columns:repeat(4,1fr);gap:24px;}}
.step{position:relative;padding-top:24px;border-top:2px solid var(--line);}
.step::before{content:"";position:absolute;top:-8px;left:0;width:14px;height:14px;border-radius:50%;background:#fff;border:3px solid var(--brand);}
.step h3{font-size:16px;font-weight:600;margin-bottom:6px;}
.step p{font-size:14px;color:var(--ink-2);line-height:1.8;}
.step .step-index{display:block;font-size:12px;letter-spacing:.14em;color:var(--accent);margin-bottom:6px;}

/* 报价构成 */
.budget{display:grid;gap:20px;margin-top:28px;}
@media (min-width:768px){.budget{grid-template-columns:repeat(3,1fr);}}
.budget-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;transition:box-shadow .25s ease,transform .25s ease;}
.budget-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);}
.budget-card.is-featured{border:2px solid var(--brand);}
.budget-label{display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--accent);margin-bottom:12px;}
.budget-card h3{font-size:18px;margin-bottom:10px;}
.budget-card p{font-size:14px;color:var(--ink-2);line-height:1.85;}
.budget-card .btn{margin-top:20px;}

/* 引用 */
.quote{margin-top:26px;padding-left:16px;border-left:3px solid var(--brand);}
.quote p{color:var(--ink);font-size:15px;line-height:1.9;}
.quote cite{display:block;margin-top:8px;font-size:13px;color:var(--ink-2);font-style:normal;}

/* FAQ */
.faq{margin-top:24px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 0;font-size:17px;font-weight:600;text-align:left;color:var(--ink);}
.faq-q:hover{color:var(--brand);}
.faq-icon{position:relative;flex:none;width:20px;height:20px;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--ink-2);transition:transform .2s ease,background-color .2s ease;}
.faq-icon::before{left:0;right:0;top:9px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:9px;width:2px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);}
.faq-item.is-open .faq-q{color:var(--brand);}
.faq-item.is-open .faq-icon::before{background:var(--accent);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease;}
.faq-a p{padding:0 0 20px;color:var(--ink-2);font-size:15px;line-height:1.9;max-width:760px;}

/* ================= CTA 区块 ================= */
.cta-band{margin-top:72px;background:var(--brand-050);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:52px 0;}
.cta-inner{display:grid;gap:24px;align-items:center;}
@media (min-width:900px){.cta-inner{grid-template-columns:1.4fr 1fr;gap:48px;}}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);line-height:1.35;margin-bottom:10px;}
.cta-band p{color:var(--ink-2);font-size:15px;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
@media (min-width:900px){.cta-actions{justify-content:flex-end;}}

/* ================= 浮动 CTA ================= */
.float-cta{position:fixed;z-index:70;opacity:0;pointer-events:none;transition:opacity .3s ease;}
.float-cta.is-visible{opacity:1;pointer-events:auto;}
@media (min-width:768px){
  .float-cta{right:24px;top:50%;transform:translateY(-50%);display:flex;flex-direction:column;gap:10px;}
  .float-cta .btn{box-shadow:var(--shadow-md);}
}
@media (max-width:767px){
  .float-cta{left:0;right:0;bottom:0;display:flex;gap:10px;padding:10px 12px;background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 20px rgba(15,27,42,.08);}
  .float-cta .btn{flex:1;height:44px;padding:0 12px;font-size:14px;}
}

/* ================= 页脚 ================= */
.site-footer{background:#0E1621;color:#C7D2DE;padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;gap:36px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:14px;}
.footer-brand .logo-mark{border-color:#3B5B85;}
.footer-desc{color:#8FA1B5;font-size:14px;line-height:1.9;max-width:330px;}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-links li{margin-bottom:10px;font-size:14px;color:#8FA1B5;line-height:1.8;}
.footer-links a{color:#C7D2DE;}
.footer-links a:hover{color:var(--accent);}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;border-top:1px solid rgba(255,255,255,.1);margin-top:48px;padding-top:22px;font-size:13px;color:#7D8FA3;}

/* ================= 响应式 ================= */
@media (max-width:1023px){
  .nav-main,.header-actions{display:none;}
  .nav-toggle{display:inline-flex;}
}
@media (min-width:1024px){
  .mobile-drawer{display:none !important;}
}
@media (max-width:767px){
  .sub-hero{padding:32px 0 40px;min-height:auto;}
  .sub-hero h1{font-size:26px;}
  .sub-hero-lead{font-size:16px;}
  .block{padding-bottom:36px;margin-bottom:36px;}
  .card{padding:20px;}
  .card-img{margin:-20px -20px 18px;}
  .cta-band{padding:40px 0;margin-top:52px;}
  .site-footer{padding:48px 0 24px;}
  body{padding-bottom:64px;}
}
@media (max-width:520px){
  .header-inner{gap:12px;}
  .brand{font-size:16px;}
  .btn{font-size:14px;}
  .pick-num{font-size:19px;}
}

/* roulang page: category2 */
:root{
    --brand:#1F4E8C;
    --brand-600:#17416F;
    --brand-050:#EAF1FA;
    --accent:#C2703A;
    --accent-050:#FBEFE7;
    --bg:#FFFFFF;
    --bg-soft:#F6F8FB;
    --line:#E4E9F0;
    --ink:#0F1B2A;
    --ink-2:#4A5A6E;
    --ok:#2F7D5D;
    --warn:#B8860B;
    --err:#B4342C;
    --radius-card:12px;
    --radius-img:16px;
    --radius-btn:10px;
    --radius-pill:999px;
    --shadow:0 1px 2px rgba(15,27,42,.05), 0 12px 32px -12px rgba(31,78,140,.16);
    --shadow-hover:0 1px 2px rgba(15,27,42,.05), 0 20px 44px -14px rgba(31,78,140,.26);
    --font:"Noto Sans SC","PingFang SC","HarmonyOS Sans","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
    --font-num:"Inter","Noto Sans SC",-apple-system,sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:var(--font);
    font-size:16px;
    line-height:1.8;
    color:var(--ink);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
  ul,ol{padding:0;list-style:none;}
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;transition:color .2s ease;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  :focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,78,140,.18);border-radius:6px;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  @media (min-width:768px){
    .container{padding:0 32px;}
  }

  /* ---------- Header / Nav ---------- */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:#fff;
    border-bottom:1px solid var(--line);
  }
  .header-inner{
    height:72px;display:flex;align-items:center;gap:28px;justify-content:space-between;
  }
  .brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--ink);}
  .logo-mark{
    width:26px;height:26px;flex:none;border:1.5px solid var(--brand);border-radius:8px;
    display:inline-flex;align-items:center;justify-content:center;
  }
  .logo-mark i{width:9px;height:9px;background:var(--accent);border-radius:2px;transform:rotate(45deg);display:block;}
  .nav-main{display:flex;align-items:center;gap:34px;margin-left:auto;}
  .nav-link{
    position:relative;font-size:17px;letter-spacing:.02em;color:var(--ink-2);padding:6px 2px;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--accent);
    transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
  }
  .nav-link:hover{color:var(--brand);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.is-active{color:var(--ink);font-weight:700;}
  .nav-link.is-active::after{transform:scaleX(1);}
  .header-actions{display:flex;align-items:center;gap:12px;}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;
    height:48px;padding:0 22px;border-radius:var(--radius-btn);
    font-size:16px;font-weight:600;line-height:1;white-space:nowrap;
    border:1px solid transparent;transition:background .2s ease,color .2s ease,transform .2s ease,border-color .2s ease,box-shadow .2s ease;
  }
  .btn-sm{height:40px;padding:0 16px;font-size:15px;}
  .btn-primary{background:var(--brand);color:#fff;}
  .btn-primary:hover{background:var(--brand-600);transform:translateY(-1px);}
  .btn-ghost{border-color:var(--line);color:var(--ink);background:#fff;}
  .btn-ghost:hover{background:var(--brand-050);border-color:#CFDBE9;}
  .btn-text{
    display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-weight:600;font-size:15px;
    text-decoration:underline;text-underline-offset:5px;text-decoration-thickness:1px;
  }
  .btn-text:hover{color:#9F5526;}

  .nav-toggle{
    display:none;width:44px;height:44px;flex-direction:column;justify-content:center;align-items:center;gap:5px;
    border-radius:10px;
  }
  .nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
  .nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
  .nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

  .nav-drawer{
    position:fixed;left:0;right:0;top:72px;bottom:0;background:#fff;z-index:70;
    padding:8px 20px 40px;overflow-y:auto;
  }
  .nav-drawer[hidden]{display:none;}
  .drawer-link{
    display:flex;align-items:center;min-height:56px;font-size:17px;color:var(--ink);
    border-bottom:1px solid var(--line);
  }
  .drawer-link.is-active{color:var(--brand);font-weight:700;}
  .drawer-actions{display:grid;gap:12px;margin-top:26px;}

  @media (max-width:980px){
    .nav-main,.header-actions{display:none;}
    .nav-toggle{display:flex;}
    .header-inner{gap:12px;}
  }

  /* ---------- Breadcrumb ---------- */
  .crumbs{padding:22px 0 0;font-size:13px;color:var(--ink-2);}
  .crumbs ol{display:flex;flex-wrap:wrap;gap:0 8px;}
  .crumbs li{display:flex;align-items:center;}
  .crumbs li + li::before{content:"/";margin-right:8px;color:#C3CCD8;}
  .crumbs a:hover{color:var(--brand);}
  .crumbs .current{color:var(--ink);}

  /* ---------- Page top ---------- */
  .page-top{padding:52px 0 0;}
  .page-top-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:56px;align-items:start;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:10px;
    font-size:13px;letter-spacing:.14em;color:var(--accent);font-weight:600;
  }
  .eyebrow i{display:block;width:26px;height:1px;background:var(--accent);}
  .page-top h1{
    font-size:clamp(30px,4vw,44px);line-height:1.24;font-weight:700;letter-spacing:-.01em;
    margin:20px 0 20px;
  }
  .lead{font-size:17px;color:var(--ink-2);max-width:620px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
  .stats{display:flex;flex-wrap:wrap;margin-top:44px;}
  .stat{padding:0 30px;border-left:1px solid var(--line);}
  .stat:first-child{padding-left:0;border-left:0;}
  .stat-num{font-family:var(--font-num);font-size:28px;font-weight:700;color:var(--brand);line-height:1.2;}
  .stat-label{font-size:13px;color:var(--ink-2);margin-top:4px;}

  .sla-card{
    background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:30px 28px;
  }
  .sla-card h2{font-size:16px;font-weight:700;letter-spacing:.02em;}
  .sla-card .sla-note{font-size:14px;color:var(--ink-2);margin-top:8px;}
  .sla-list{margin-top:8px;}
  .sla-list li{
    display:flex;align-items:baseline;justify-content:space-between;gap:16px;
    padding:15px 0;border-bottom:1px dashed var(--line);font-size:15px;color:var(--ink-2);
  }
  .sla-list li:last-child{border-bottom:0;}
  .sla-list .val{font-family:var(--font-num);font-weight:700;color:var(--brand);white-space:nowrap;}

  /* ---------- Section base ---------- */
  .section{padding:56px 0;}
  .section-soft{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .section-head{max-width:720px;margin-bottom:42px;}
  .section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;letter-spacing:-.01em;margin-top:16px;}
  .section-head p{margin-top:14px;color:var(--ink-2);}
  @media (min-width:768px){
    .section{padding:96px 0;}
  }

  /* ---------- Asymmetric cards ---------- */
  .asym{display:grid;grid-template-columns:1.45fr 1fr;gap:24px;align-items:start;}
  .asym-side{display:grid;gap:24px;}
  .card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow);overflow:hidden;
    transition:transform .25s ease,box-shadow .25s ease;
  }
  .card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
  .card-cover{overflow:hidden;background:var(--bg-soft);}
  .card-cover img{width:100%;height:100%;object-fit:cover;}
  .card-wide .card-cover{height:340px;}
  .card-narrow .card-cover{height:150px;}
  .card-body{padding:28px;}
  .card-narrow .card-body{padding:24px;}
  .tag{
    display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--radius-pill);
    background:var(--brand-050);color:var(--brand);font-size:12px;letter-spacing:.04em;
  }
  .tag-accent{background:var(--accent-050);color:#A4541F;}
  .card-body h3{font-size:20px;line-height:1.4;margin:14px 0 10px;}
  .card-narrow .card-body h3{font-size:18px;margin:12px 0 8px;}
  .card-body p{color:var(--ink-2);font-size:15px;line-height:1.75;}
  .card-link{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:15px;font-weight:600;color:var(--brand);}
  .card-link:hover{color:var(--brand-600);}
  @media (min-width:981px){
    .asym-side > *:nth-child(2){margin-top:26px;}
  }

  /* ---------- Numbered list ---------- */
  .num-list{border-top:1px solid var(--line);}
  .num-list li{
    display:grid;grid-template-columns:92px minmax(0,1fr);gap:28px;
    padding:34px 0;border-bottom:1px solid var(--line);
  }
  .num{
    font-family:var(--font-num);font-size:34px;font-weight:700;color:var(--accent);
    line-height:1;letter-spacing:-.02em;
  }
  .num-list h3{font-size:20px;line-height:1.4;margin-bottom:10px;}
  .num-list p{color:var(--ink-2);max-width:780px;}

  /* ---------- Standards ---------- */
  .standards{display:grid;grid-template-columns:1.55fr 1fr;gap:24px;}
  .panel{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:32px;box-shadow:var(--shadow);
  }
  .panel h3{font-size:19px;margin-bottom:6px;}
  .panel .panel-note{font-size:14px;color:var(--ink-2);margin-bottom:12px;}
  .check-list li{display:flex;gap:12px;padding:13px 0;font-size:16px;color:var(--ink);border-bottom:1px solid var(--line);}
  .check-list li:last-child{border-bottom:0;}
  .check{
    flex:none;width:20px;height:20px;margin-top:6px;border-radius:6px;background:var(--brand-050);
    color:var(--brand);font-size:12px;line-height:20px;text-align:center;font-weight:700;
  }
  .metric-grid{display:grid;gap:20px;align-content:start;}
  .metric{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:26px;box-shadow:var(--shadow);
  }
  .metric .metric-num{font-family:var(--font-num);font-size:32px;font-weight:700;color:var(--brand);line-height:1.2;}
  .metric .metric-label{font-size:15px;font-weight:600;margin-top:6px;}
  .metric .metric-desc{font-size:14px;color:var(--ink-2);margin-top:4px;}

  /* ---------- Quotes ---------- */
  .quotes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
  .quote{border-left:3px solid var(--brand);padding:4px 0 4px 24px;}
  .quote p{font-size:16px;color:var(--ink);}
  .quote footer{margin-top:16px;font-size:13px;color:var(--ink-2);}

  /* ---------- FAQ ---------- */
  .faq{border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
    padding:22px 0;text-align:left;font-size:17px;font-weight:600;color:var(--ink);
    transition:color .2s ease;
  }
  .faq-q:hover{color:var(--brand);}
  .faq-icon{position:relative;flex:none;width:16px;height:16px;}
  .faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--accent);border-radius:2px;}
  .faq-icon::before{left:0;right:0;top:7px;height:2px;}
  .faq-icon::after{top:0;bottom:0;left:7px;width:2px;transition:transform .2s ease;}
  .faq-item.is-open .faq-icon::after{transform:scaleY(0);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease;}
  .faq-item.is-open .faq-a{max-height:360px;}
  .faq-a p{padding:0 0 24px;color:var(--ink-2);max-width:780px;}

  /* ---------- CTA band ---------- */
  .cta-wrap{padding:0 0 8px;}
  .cta-band{
    background:var(--brand-050);border:1px solid #D8E4F2;border-radius:var(--radius-img);
    padding:48px;display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center;
  }
  .cta-band h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;font-weight:700;}
  .cta-band p{margin-top:14px;color:var(--ink-2);max-width:560px;}
  .cta-actions{display:grid;gap:12px;justify-items:stretch;}
  .cta-meta{font-size:13px;color:var(--ink-2);margin-top:4px;text-align:center;}

  /* ---------- Footer ---------- */
  .site-footer{background:#0E1621;color:#C7D2DE;margin-top:96px;padding-top:64px;}
  .footer-grid{
    display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
    padding-bottom:48px;border-bottom:1px solid #1E2A38;
  }
  .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:700;margin-bottom:16px;}
  .footer-brand .logo-mark{border-color:#5B7BA6;}
  .footer-desc{font-size:14px;line-height:1.8;color:#93A3B5;max-width:340px;}
  .footer-title{font-size:14px;color:#fff;letter-spacing:.06em;margin-bottom:16px;}
  .footer-links{display:grid;gap:10px;}
  .footer-links a,.footer-links li{font-size:14px;color:#A9B7C6;}
  .footer-links a:hover{color:var(--accent);}
  .footer-bottom{
    padding:20px 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
    font-size:13px;color:#7D8B9B;
  }

  /* ---------- Floating CTA ---------- */
  .float-cta{
    position:fixed;right:28px;top:50%;z-index:60;
    writing-mode:vertical-rl;letter-spacing:.2em;font-size:15px;font-weight:600;
    padding:20px 13px;border-radius:var(--radius-pill);
    background:var(--brand);color:#fff;
    box-shadow:0 1px 2px rgba(15,27,42,.05), 0 12px 32px -12px rgba(31,78,140,.28);
    opacity:0;pointer-events:none;transform:translateY(-50%) translateX(8px);
    transition:opacity .3s ease,transform .3s ease,background .2s ease;
  }
  .float-cta.is-visible{opacity:1;pointer-events:auto;transform:translateY(-50%) translateX(0);}
  .float-cta:hover{background:var(--brand-600);}

  @media (max-width:900px){
    .float-cta{
      writing-mode:horizontal-tb;letter-spacing:.06em;
      left:16px;right:16px;top:auto;bottom:0;
      height:56px;padding:0;border-radius:12px 12px 0 0;
      display:flex;align-items:center;justify-content:center;
      transform:translateY(100%);
    }
    .float-cta.is-visible{transform:translateY(0);}
  }

  /* ---------- Responsive ---------- */
  @media (max-width:1024px){
    .page-top-grid{grid-template-columns:minmax(0,1fr);gap:36px;}
    .asym{grid-template-columns:minmax(0,1fr);}
    .asym-side{grid-template-columns:repeat(2,minmax(0,1fr));}
    .asym-side > *:nth-child(2){margin-top:0;}
    .standards{grid-template-columns:minmax(0,1fr);}
    .cta-band{grid-template-columns:minmax(0,1fr);padding:40px 32px;}
    .footer-grid{grid-template-columns:1.4fr 1fr;gap:32px;}
  }
  @media (max-width:768px){
    .section{padding:56px 0;}
    .card-wide .card-cover{height:230px;}
    .card-narrow .card-cover{height:170px;}
    .num-list li{grid-template-columns:60px minmax(0,1fr);gap:18px;padding:26px 0;}
    .num{font-size:26px;}
    .quotes{grid-template-columns:minmax(0,1fr);}
    .cta-band{padding:32px 24px;border-radius:12px;}
    .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
    .site-footer{margin-top:64px;padding-top:48px;}
  }
  @media (max-width:520px){
    .stat{padding:0 18px;}
    .stat-num{font-size:24px;}
    .hero-actions .btn{width:100%;}
    .asym-side{grid-template-columns:minmax(0,1fr);}
    .card-body{padding:22px;}
    .panel{padding:22px;}
    .metric{padding:20px;}
  }