/* roulang page: index */
:root{
  --ink:#14161A;
  --ink-2:#3A3F46;
  --muted:#6B7078;
  --line:#E4E2DC;
  --bg:#FBFAF7;
  --surface:#FFFFFF;
  --brand:#0E7C66;
  --brand-2:#12B08C;
  --brand-on-dark:#35E0B0;
  --accent:#E1462B;
  --danger:#D33A2C;
  --radius-btn:6px;
  --radius-card:10px;
  --radius-block:16px;
  --shadow-1:0 1px 2px rgba(20,22,26,.05);
  --shadow-2:0 8px 24px rgba(20,22,26,.08);
  --container:1240px;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::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-sans);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--ink);text-decoration:none;transition:color 160ms ease-out;}
a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.2;letter-spacing:-0.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:3px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.mono{font-family:var(--font-mono);font-weight:700;font-variant-numeric:tabular-nums;}

/* 顶部 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(251,250,247,.94);backdrop-filter:blur(8px);border-bottom:1px solid transparent;transition:border-color 160ms ease-out, box-shadow 160ms ease-out;}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 2px rgba(20,22,26,.05);}
.brand-bar__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-0.01em;color:var(--ink);}
.logo:hover{text-decoration:none;color:var(--ink);}
.logo__mark{display:grid;place-items:center;width:34px;height:34px;border-radius:9px;background:var(--ink);color:var(--brand-on-dark);}
.logo__mark svg{width:18px;height:18px;}
.brand-bar__actions{display:flex;align-items:center;gap:14px;}
.hotline{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--muted);font-family:var(--font-mono);}
.hotline svg{width:15px;height:15px;color:var(--brand);}
.channel-bar{border-top:1px solid var(--line);}
.channel-nav{display:flex;align-items:center;gap:6px;height:48px;overflow-x:auto;scrollbar-width:none;}
.channel-nav::-webkit-scrollbar{display:none;}
.channel-nav a{
  display:inline-flex;align-items:center;white-space:nowrap;
  padding:6px 14px;border-radius:999px;font-size:14px;color:var(--ink-2);
  transition:background 160ms ease-out,color 160ms ease-out;
}
.channel-nav a:hover{background:#F1EFE9;color:var(--ink);text-decoration:none;}
.channel-nav a.is-active{background:var(--ink);color:#fff;}
.menu-toggle{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-btn);place-items:center;color:var(--ink);background:var(--surface);}
.menu-toggle svg{width:20px;height:20px;}
.drawer{display:none;border-bottom:1px solid var(--line);background:var(--surface);}
.drawer.is-open{display:block;}
.drawer__inner{padding:16px 24px 20px;display:flex;flex-direction:column;gap:8px;}
.drawer__inner a{padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius-btn);font-size:15px;}
.drawer__inner a.is-active{border-color:var(--brand);color:var(--brand);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform 160ms ease-out,box-shadow 160ms ease-out,background 160ms ease-out,color 160ms ease-out,border-color 160ms ease-out;
}
.btn:hover{text-decoration:none;transform:translateY(-1px);}
.btn--primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1);}
.btn--primary:hover{background:var(--brand-2);color:#fff;box-shadow:var(--shadow-2);}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand);}
.btn--dark{background:#fff;color:var(--ink);}
.btn--dark:hover{background:var(--brand-on-dark);color:var(--ink);}
.btn--sm{height:38px;padding:0 16px;font-size:14px;}
.btn--block{width:100%;}

/* 通用板块 */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--line{border-top:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:48px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.06em;text-transform:uppercase;font-family:var(--font-mono);}
.eyebrow::before{content:"";width:22px;height:1.5px;background:var(--brand);}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.2;margin-top:14px;}
.section-head p{margin-top:14px;color:var(--muted);font-size:15.5px;}

/* Hero */
.hero{padding:76px 0 84px;position:relative;overflow:hidden;}
.hero::after{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(680px 320px at 88% -10%, rgba(18,176,140,.10), transparent 70%),
    radial-gradient(520px 260px at 6% 90%, rgba(20,22,26,.045), transparent 72%);
}
.hero__grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:center;}
.hero__copy{grid-column:span 6;}
.hero__media{grid-column:span 6;}
.hero h1{font-size:clamp(30px,4.4vw,52px);line-height:1.12;font-weight:800;letter-spacing:-0.02em;margin-top:18px;}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero__lead{margin-top:20px;font-size:17px;color:var(--ink-2);max-width:32em;}
.hero__actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:32px;}
.hero__actions .text-link{font-size:15px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.hero__actions .text-link svg{width:16px;height:16px;transition:transform 160ms ease-out;}
.hero__actions .text-link:hover svg{transform:translateX(3px);}
.hero__stats{margin-top:34px;display:inline-flex;flex-wrap:wrap;gap:10px 22px;padding:12px 16px;border:1px solid var(--line);border-radius:var(--radius-btn);background:var(--surface);}
.hero__stats span{font-family:var(--font-mono);font-size:12.5px;color:var(--muted);letter-spacing:.01em;}
.hero__stats span b{color:var(--ink);font-weight:700;}
.hero__figure{position:relative;border:1px solid var(--line);border-radius:var(--radius-block);overflow:hidden;box-shadow:var(--shadow-1);aspect-ratio:4/3;background:#F1EFE9;}
.hero__figure img{width:100%;height:100%;object-fit:cover;}
.hero__figure figcaption{position:absolute;left:0;right:0;bottom:0;padding:14px 18px;font-size:12.5px;color:#fff;font-family:var(--font-mono);background:linear-gradient(to top,rgba(20,22,26,.72),transparent);}

/* 数据条 */
.metric-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--surface);}
.metric-strip__grid{display:grid;grid-template-columns:repeat(4,1fr);}
.metric{padding:28px 24px;border-left:1px solid var(--line);}
.metric:first-child{border-left:none;}
.metric b{display:block;font-family:var(--font-mono);font-size:clamp(24px,2.6vw,32px);font-weight:700;letter-spacing:-0.01em;}
.metric b span{font-size:15px;color:var(--brand);margin-left:2px;}
.metric p{margin-top:6px;font-size:13.5px;color:var(--muted);}

/* 卡片网格 */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;transition:border-color 160ms ease-out,box-shadow 160ms ease-out,transform 160ms ease-out;
}
.card:hover{border-color:var(--brand);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.card__icon{display:grid;place-items:center;width:40px;height:40px;border-radius:9px;background:#EAF6F2;color:var(--brand);margin-bottom:18px;}
.card__icon svg{width:20px;height:20px;}
.card h3{font-size:18px;font-weight:600;}
.card p{margin-top:10px;font-size:14.5px;color:var(--muted);}
.card__list{margin-top:16px;display:flex;flex-direction:column;gap:8px;}
.card__list li{position:relative;padding-left:18px;font-size:14px;color:var(--ink-2);}
.card__list li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:2px;background:var(--brand-2);}

/* 三步上手 */
.steps{display:grid;grid-template-columns:repeat(3,1fr);}
.step{padding:0 28px;border-left:1px solid var(--line);}
.step:first-child{border-left:none;padding-left:0;}
.step:last-child{padding-right:0;}
.step__num{font-family:var(--font-mono);font-size:40px;font-weight:700;color:var(--line);line-height:1;transition:color 200ms ease-out;}
.step:hover .step__num{color:var(--brand);}
.step h3{margin-top:16px;font-size:20px;font-weight:600;}
.step p{margin-top:10px;font-size:15px;color:var(--muted);}
.step-cta{margin-top:44px;display:flex;flex-wrap:wrap;align-items:center;gap:16px;}

/* 案例 */
.case-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;display:flex;flex-direction:column;transition:border-color 160ms ease-out,box-shadow 160ms ease-out,transform 160ms ease-out;}
.case-card:hover{border-color:var(--brand);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.case-card__media{aspect-ratio:16/10;overflow:hidden;background:#F1EFE9;}
.case-card__media img{width:100%;height:100%;object-fit:cover;}
.case-card__body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:#EAF6F2;color:var(--brand);font-size:12.5px;font-weight:600;}
.tag--accent{background:#FDEDE9;color:var(--accent);}
.case-card h3{font-size:18px;font-weight:600;}
.case-card p{font-size:14.5px;color:var(--muted);}
.case-card__metrics{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:18px;}
.case-card__metrics div{font-family:var(--font-mono);font-size:13px;color:var(--muted);}
.case-card__metrics b{display:block;font-size:20px;color:var(--ink);}

/* 最新信息 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;transition:border-color 160ms ease-out,box-shadow 160ms ease-out,transform 160ms ease-out;}
.news-card:hover{border-color:var(--brand);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.news-card__media{aspect-ratio:16/9;overflow:hidden;background:#F1EFE9;}
.news-card__media img{width:100%;height:100%;object-fit:cover;}
.news-card__body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-card h3{font-size:17px;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card h3 a{color:var(--ink);}
.news-card h3 a:hover{color:var(--brand);}
.news-card p{font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-card__meta{margin-top:auto;padding-top:14px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--line);}
.news-card__meta time{font-family:var(--font-mono);font-size:12.5px;color:var(--muted);}
.news-empty{border:1px dashed var(--line);border-radius:var(--radius-block);padding:56px 24px;text-align:center;background:var(--surface);}
.news-empty p{color:var(--muted);font-size:15px;}
.news-empty a{display:inline-block;margin-top:16px;font-weight:600;color:var(--brand);}
.section-foot{margin-top:40px;display:flex;justify-content:center;}

/* FAQ */
.faq-layout{display:grid;grid-template-columns:repeat(12,1fr);gap:48px;}
.faq-aside{grid-column:span 4;}
.faq-aside h2{font-size:clamp(24px,3vw,32px);}
.faq-aside p{margin-top:14px;font-size:15px;color:var(--muted);}
.faq-aside .contact-chip{margin-top:24px;display:flex;flex-direction:column;gap:6px;padding:18px 20px;border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface);}
.faq-aside .contact-chip b{font-size:15px;}
.faq-aside .contact-chip span{font-family:var(--font-mono);font-size:13px;color:var(--brand);}
.faq-list{grid-column:span 8;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:24px;padding:22px 0;text-align:left;font-size:18px;font-weight:600;color:var(--ink);transition:color 160ms ease-out;}
.faq-q:hover{color:var(--brand);}
.faq-q .sign{flex:0 0 auto;width:20px;height:20px;position:relative;margin-top:5px;}
.faq-q .sign::before,.faq-q .sign::after{content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform 240ms ease-out,opacity 240ms ease-out;}
.faq-q .sign::before{top:9px;left:0;width:20px;height:1.6px;}
.faq-q .sign::after{left:9px;top:0;width:1.6px;height:20px;}
.faq-item.is-open .faq-q .sign::after{transform:scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms ease-out;}
.faq-a p{padding:0 0 24px;font-size:15px;color:var(--muted);max-width:44em;}

/* CTA 深色块 */
.cta-block{background:var(--ink);color:#fff;border-radius:var(--radius-block);padding:56px;display:grid;grid-template-columns:repeat(12,1fr);gap:48px;}
.cta-copy{grid-column:span 5;}
.cta-copy .eyebrow{color:var(--brand-on-dark);}
.cta-copy .eyebrow::before{background:var(--brand-on-dark);}
.cta-copy h2{margin-top:16px;font-size:clamp(24px,3vw,34px);color:#fff;}
.cta-copy p{margin-top:16px;font-size:15px;color:rgba(255,255,255,.72);}
.cta-copy ul{margin-top:26px;display:flex;flex-direction:column;gap:12px;}
.cta-copy li{display:flex;gap:10px;font-size:14.5px;color:rgba(255,255,255,.82);}
.cta-copy li svg{width:18px;height:18px;flex:0 0 auto;margin-top:4px;color:var(--brand-on-dark);}
.cta-form{grid-column:span 7;background:#fff;border-radius:var(--radius-card);padding:30px;color:var(--ink);}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field--full{grid-column:span 2;}
.field label{font-size:13.5px;font-weight:600;color:var(--ink-2);}
.field input,.field select{height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius-btn);background:#fff;transition:border-color 160ms ease-out,box-shadow 160ms ease-out;}
.field input:focus,.field select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(14,124,102,.15);}
.field.has-error input,.field.has-error select{border-color:var(--danger);background:#FEF5F4;}
.form-note{margin-top:14px;font-size:12.5px;color:var(--muted);}
.form-alert{margin-top:16px;padding:12px 14px;border-radius:var(--radius-btn);font-size:13.5px;display:none;}
.form-alert.is-error{display:block;border:1px solid var(--danger);background:#FEF5F4;color:var(--danger);}
.form-alert.is-success{display:block;border:1px solid var(--brand);background:#EAF6F2;color:var(--brand);}
.cta-form .btn{margin-top:20px;}

/* 页脚 */
.site-footer{background:var(--ink);color:#fff;padding:64px 0 0;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.12);}
.footer-brand .logo{color:#fff;}
.footer-brand .logo__mark{background:rgba(255,255,255,.1);}
.footer-brand p{margin-top:18px;font-size:14px;color:rgba(255,255,255,.66);max-width:30em;}
.footer-brand .keyword-line{margin-top:16px;font-family:var(--font-mono);font-size:12.5px;color:var(--brand-on-dark);}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;letter-spacing:.02em;}
.footer-col ul{margin-top:18px;display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-col a:hover{color:#fff;text-decoration:none;}
.footer-col li span{font-size:14px;color:rgba(255,255,255,.66);font-family:var(--font-mono);}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;padding:26px 0 34px;font-size:13px;color:rgba(255,255,255,.5);}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:#fff;text-decoration:none;}

/* 动效 */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.is-in{opacity:1;transform:none;transition:opacity .5s ease-out,transform .5s ease-out;}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
}

/* 响应式 */
@media (max-width:1359px){
  .container{max-width:1080px;}
}
@media (max-width:1023px){
  .section{padding:72px 0;}
  .hero{padding:56px 0 64px;}
  .hero__copy,.hero__media{grid-column:span 12;}
  .hero__media{order:2;}
  .grid-3,.news-grid{grid-template-columns:repeat(2,1fr);}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .metric-strip__grid{grid-template-columns:repeat(2,1fr);}
  .metric{border-top:1px solid var(--line);}
  .metric:nth-child(-n+2){border-top:none;}
  .metric:nth-child(odd){border-left:none;}
  .steps{grid-template-columns:1fr;gap:32px;}
  .step{padding:0 0 0 22px;border-left:1px solid var(--line);}
  .step:first-child,.step:last-child{padding-left:22px;}
  .faq-layout{gap:32px;}
  .faq-aside,.faq-list{grid-column:span 12;}
  .cta-block{padding:40px;gap:32px;}
  .cta-copy,.cta-form{grid-column:span 12;}
  .footer-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:767px){
  .channel-bar{display:none;}
  .channel-nav--desktop{display:none;}
  .menu-toggle{display:grid;}
  .hotline{display:none;}
  .hero__stats{display:flex;width:100%;}
  .hero__actions .btn{width:100%;}
  .grid-2,.grid-3,.grid-4,.news-grid{grid-template-columns:1fr;}
  .metric-strip__grid{grid-template-columns:1fr;}
  .metric{border-left:none;border-top:1px solid var(--line);}
  .metric:first-child{border-top:none;}
  .form-grid{grid-template-columns:1fr;}
  .field--full{grid-column:span 1;}
  .cta-block{padding:28px 22px;}
  .cta-form{padding:22px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .section-head{margin-bottom:36px;}
}
@media (max-width:400px){
  .container{padding:0 16px;}
  .card{padding:20px;}
  .drawer__inner{padding:14px 16px 18px;}
}

/* roulang page: article */
:root{
  --ink:#14161A;
  --ink-2:#3A3F46;
  --muted:#6B7078;
  --line:#E4E2DC;
  --line-soft:#EFEDE7;
  --bg:#FBFAF7;
  --surface:#FFFFFF;
  --surface-2:#F6F4EF;
  --brand:#0E7C66;
  --brand-2:#12B08C;
  --brand-soft:#E7F3EF;
  --brand-on-dark:#35E0B0;
  --accent:#E1462B;
  --radius-btn:6px;
  --radius-card:10px;
  --radius-lg:16px;
  --shadow-1:0 1px 2px rgba(20,22,26,.05);
  --shadow-2:0 8px 24px rgba(20,22,26,.08);
  --shadow-3:0 18px 48px rgba(20,22,26,.12);
  --font-sans:"Noto Sans SC","Inter",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink);text-decoration:none;transition:color .16s ease-out,border-color .16s ease-out,background-color .16s ease-out,opacity .16s ease-out}
a:hover{color:var(--brand)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
svg{width:100%;height:100%;display:block}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand);color:#fff}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .16s ease-out,box-shadow .16s ease-out,background-color .16s ease-out,border-color .16s ease-out,color .16s ease-out;
}
.btn--primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1)}
.btn--primary:hover{background:var(--brand-2);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn--ghost{border-color:var(--line);background:var(--surface);color:var(--ink)}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn--dark{background:var(--ink);color:#fff}
.btn--dark:hover{background:#000;color:#fff;transform:translateY(-1px)}
.btn--sm{height:38px;padding:0 16px;font-size:14px}
.btn--block{width:100%}
.btn[disabled]{opacity:.4;pointer-events:none}

/* ---------- 通用小件 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.eyebrow--accent{background:#FDEDE9;color:var(--accent)}
.eyebrow--dark{background:rgba(53,224,176,.12);color:var(--brand-on-dark)}
.section{padding:96px 0}
.section--tight{padding:64px 0}
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.2;margin-bottom:14px}
.section-head p{font-size:16px;color:var(--muted);line-height:1.8}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:rgba(251,250,247,.96);backdrop-filter:saturate(140%) blur(8px);transition:box-shadow .24s ease-out}
.brand-bar{background:var(--surface)}
.brand-bar__inner{display:flex;align-items:center;gap:28px;height:72px}
.site-header.is-stuck .brand-bar{box-shadow:0 1px 0 var(--line),0 8px 20px rgba(20,22,26,.05)}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);flex:none}
.logo__mark{width:34px;height:34px;border-radius:9px;background:var(--ink);color:var(--brand-on-dark);display:flex;align-items:center;justify-content:center;padding:7px;flex:none}
.logo__text{font-size:18px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.logo:hover .logo__text{color:var(--brand)}
.channel-nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.channel-nav a{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:999px;
  font-size:14.5px;font-weight:500;color:var(--ink-2);
}
.channel-nav a:hover{background:var(--surface-2);color:var(--ink)}
.channel-nav a.is-active{background:var(--ink);color:#fff;font-weight:600}
.channel-nav--desktop{margin-left:auto}
.brand-bar__actions{display:flex;align-items:center;gap:16px;flex:none;margin-left:auto}
.hotline{display:inline-flex;align-items:center;gap:7px;font-family:var(--font-mono);font-size:13.5px;color:var(--ink-2);white-space:nowrap}
.hotline svg{width:18px;height:18px;color:var(--brand)}
.menu-toggle{display:none;width:42px;height:42px;padding:10px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--ink)}
.channel-bar{background:var(--bg);border-bottom:1px solid var(--line)}
.channel-bar .channel-nav{padding:5px 0}
.channel-bar .channel-nav a{height:36px;font-size:14px}
.drawer{display:none;position:fixed;left:0;right:0;top:0;bottom:0;background:rgba(20,22,26,.45);z-index:90;opacity:0;pointer-events:none;transition:opacity .24s ease-out}
.drawer.is-open{opacity:1;pointer-events:auto}
.drawer__inner{
  position:absolute;right:0;top:0;width:min(86vw,340px);height:100%;
  background:var(--surface);border-left:1px solid var(--line);
  padding:28px 22px calc(28px + env(safe-area-inset-bottom));
  display:flex;flex-direction:column;gap:8px;overflow-y:auto;
  transform:translateX(100%);transition:transform .24s ease-out;
}
.drawer.is-open .drawer__inner{transform:translateX(0)}
.drawer__inner a{padding:13px 14px;border-radius:8px;font-size:15.5px;font-weight:500;color:var(--ink-2)}
.drawer__inner a:hover{background:var(--surface-2);color:var(--ink)}
.drawer__inner a.is-active{background:var(--ink);color:#fff}
.drawer__inner .btn{margin-top:12px;height:48px}

/* ---------- 文章头 ---------- */
.article-hero{
  padding:46px 0 34px;
  background:linear-gradient(180deg,#F4F2EC 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.breadcrumb{display:flex;align-items:center;gap:9px;flex-wrap:wrap;font-size:13.5px;color:var(--muted)}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb__sep{color:#C4C0B6}
.breadcrumb__cat{color:var(--ink-2);font-weight:600}
.breadcrumb__current{color:var(--muted);max-width:min(60vw,620px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{margin-top:22px}
.article-title{
  font-size:clamp(28px,4vw,44px);line-height:1.18;letter-spacing:-.02em;font-weight:800;
  margin:16px 0 20px;max-width:900px;
}
.article-meta{display:flex;align-items:center;gap:12px 22px;flex-wrap:wrap;font-size:13.5px;color:var(--muted)}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px}
.article-meta .meta-item svg{width:16px;height:16px;color:var(--brand);flex:none}
.article-meta time{font-family:var(--font-mono);color:var(--ink-2)}

/* ---------- 文章布局 ---------- */
.article-main{padding:56px 0 24px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 292px;gap:56px;align-items:start}
.article-col{min-width:0}

.prose{max-width:760px;font-size:17px;line-height:1.9;color:var(--ink-2)}
.prose > *:first-child{margin-top:0}
.prose h2{
  font-size:clamp(22px,2.3vw,28px);line-height:1.35;font-weight:700;color:var(--ink);
  border-left:3px solid var(--brand);padding-left:14px;margin:46px 0 16px;
}
.prose h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--ink);margin:32px 0 12px}
.prose h4{font-size:17px;font-weight:600;color:var(--ink);margin:24px 0 10px}
.prose p{margin:0 0 18px}
.prose strong{color:var(--ink);font-weight:600}
.prose a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.prose a:hover{color:var(--brand-2)}
.prose blockquote{
  margin:26px 0;padding:18px 22px;border-left:3px solid var(--brand);
  background:#F3F7F5;border-radius:0 8px 8px 0;color:var(--ink-2);font-size:16.5px;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose ul,.prose ol{margin:0 0 20px;padding-left:22px}
.prose ul li{list-style:none;position:relative;margin:9px 0;padding-left:4px}
.prose ul li::before{content:"";position:absolute;left:-15px;top:.78em;width:6px;height:6px;border-radius:2px;background:var(--brand-2)}
.prose ol{list-style:decimal}
.prose ol li{margin:9px 0;padding-left:4px}
.prose ol li::marker{font-family:var(--font-mono);color:var(--brand);font-weight:700}
.prose img{border-radius:8px;border:1px solid var(--line);margin:28px auto 10px;max-width:100%}
.prose figure{margin:28px 0}
.prose figcaption{text-align:center;font-size:13.5px;color:var(--muted);margin-top:10px;line-height:1.6}
.prose table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden}
.prose th,.prose td{padding:12px 15px;text-align:left;border-bottom:1px solid var(--line-soft)}
.prose th{background:var(--surface-2);font-weight:600;color:var(--ink);font-size:14.5px}
.prose tr:last-child td{border-bottom:0}
.prose code{font-family:var(--font-mono);font-size:.9em;background:#F1EFEA;padding:2px 6px;border-radius:4px;color:var(--ink)}
.prose hr{border:0;height:1px;background:var(--line);margin:38px 0}

/* ---------- 文末标签与返回 ---------- */
.article-foot{max-width:760px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line)}
.tag-label{display:block;font-size:13px;color:var(--muted);margin-bottom:12px;letter-spacing:.04em}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);color:var(--ink-2);font-size:13.5px;
}
.tag:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.article-foot__links{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:24px}
.link-arrow{display:inline-flex;align-items:center;gap:7px;font-size:15px;font-weight:600;color:var(--brand)}
.link-arrow svg{width:16px;height:16px;transition:transform .16s ease-out}
.link-arrow:hover svg{transform:translateX(3px)}

/* ---------- 缺失提示 ---------- */
.article-empty{
  max-width:760px;padding:40px 32px;border:1px dashed var(--line);border-radius:var(--radius-lg);
  background:var(--surface);text-align:left;
}
.article-empty h2{font-size:22px;margin-bottom:12px}
.article-empty p{color:var(--muted);font-size:15.5px;margin-bottom:22px}

/* ---------- 侧栏 ---------- */
.article-aside{position:sticky;top:132px}
.aside-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
}
.aside-card h3{font-size:15px;font-weight:600;margin-bottom:16px;letter-spacing:.02em}
.aside-list li{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px solid var(--line-soft);font-size:13.5px}
.aside-list li:last-child{border-bottom:0}
.aside-list dt,.aside-list .k{color:var(--muted);flex:none}
.aside-list .v{color:var(--ink);text-align:right;font-weight:500;word-break:break-all}
.aside-list .v.mono{font-family:var(--font-mono);font-size:12.5px}
.aside-card .btn{margin-top:18px}
.aside-note{margin-top:20px;padding-top:18px;border-top:1px solid var(--line-soft);font-size:13px;color:var(--muted);line-height:1.7}

/* ---------- 相关推荐 ---------- */
.related-section{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .16s ease-out,box-shadow .16s ease-out,border-color .16s ease-out;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand)}
.card__media{position:relative;aspect-ratio:16/10;background:var(--surface-2);overflow:hidden}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease-out}
.card:hover .card__media img{transform:scale(1.03)}
.card__body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card__top{display:flex;align-items:center;gap:12px}
.card__body h3{font-size:19px;line-height:1.45;font-weight:600}
.card__body p{font-size:14.5px;color:var(--muted);line-height:1.75}
.card__meta{margin-top:auto;display:flex;align-items:center;gap:12px;font-family:var(--font-mono);font-size:12.5px;color:var(--muted)}
.card__link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.card__link svg{width:15px;height:15px}

/* ---------- 数据条 ---------- */
.stat-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface);overflow:hidden}
.stat{padding:24px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat__num{font-family:var(--font-mono);font-size:28px;font-weight:700;color:var(--ink);letter-spacing:-.02em;line-height:1.1}
.stat__num em{font-style:normal;color:var(--brand);font-size:16px;margin-left:3px}
.stat__label{margin-top:8px;font-size:13.5px;color:var(--muted)}

/* ---------- CTA 表单 ---------- */
.cta-section{padding:96px 0}
.cta-panel{
  background:var(--ink);color:rgba(255,255,255,.78);border-radius:var(--radius-lg);
  padding:56px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,440px);gap:56px;
  position:relative;overflow:hidden;
}
.cta-panel::after{
  content:"";position:absolute;right:-90px;bottom:-110px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(53,224,176,.18),transparent 68%);pointer-events:none;
}
.cta-panel h2{color:#fff;font-size:clamp(24px,3vw,34px);line-height:1.22;margin:16px 0 16px}
.cta-panel p{font-size:15.5px;line-height:1.85;max-width:460px}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:rgba(255,255,255,.82)}
.cta-points svg{width:18px;height:18px;flex:none;margin-top:3px;color:var(--brand-on-dark)}
.cta-form{position:relative;z-index:1;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius-card);padding:28px}
.cta-form h3{color:#fff;font-size:17px;margin-bottom:6px}
.cta-form .form-hint{font-size:13px;color:rgba(255,255,255,.55);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:rgba(255,255,255,.7);margin-bottom:8px}
.field input,.field select{
  width:100%;height:48px;padding:0 14px;border-radius:var(--radius-btn);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.18);
  color:#fff;font-size:15px;transition:border-color .16s ease-out,box-shadow .16s ease-out,background-color .16s ease-out;
}
.field input::placeholder{color:rgba(255,255,255,.38)}
.field select option{color:var(--ink)}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--brand-on-dark);
  box-shadow:0 0 0 3px rgba(53,224,176,.18);background:rgba(255,255,255,.1);
}
.form-msg{margin-top:14px;font-size:13.5px;padding:11px 14px;border-radius:var(--radius-btn);display:none}
.form-msg.is-ok{display:block;background:rgba(53,224,176,.12);border:1px solid rgba(53,224,176,.45);color:var(--brand-on-dark)}
.form-msg.is-error{display:block;background:rgba(225,70,43,.14);border:1px solid rgba(225,70,43,.55);color:#FFC9BE}
.cta-form .btn{margin-top:6px;height:48px;background:var(--brand-on-dark);color:#06231C}
.cta-form .btn:hover{background:#4FF0C0;color:#06231C}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.62);padding:72px 0 30px;border-top:1px solid rgba(255,255,255,.12)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12)}
.site-footer .logo{color:#fff}
.site-footer .logo__mark{background:rgba(255,255,255,.08);color:var(--brand-on-dark)}
.site-footer .logo__text{color:#fff}
.footer-brand p{font-size:14.5px;line-height:1.8;margin-top:18px;max-width:340px}
.keyword-line{margin-top:14px;font-family:var(--font-mono);font-size:12.5px;color:rgba(255,255,255,.42)}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:18px;letter-spacing:.03em}
.footer-col li{margin-bottom:12px;font-size:14px}
.footer-col a{color:rgba(255,255,255,.62)}
.footer-col a:hover{color:#fff}
.footer-col span{color:rgba(255,255,255,.62)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:26px;font-size:13px;color:rgba(255,255,255,.45)}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:var(--brand-on-dark)}

/* ---------- 动效 ---------- */
.fade-up{opacity:0;transform:translateY(12px);animation:fadeUp .6s ease-out forwards}
.fade-up:nth-child(2){animation-delay:.06s}
.fade-up:nth-child(3){animation-delay:.12s}
.fade-up:nth-child(4){animation-delay:.18s}
@keyframes fadeUp{to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .fade-up{opacity:1;transform:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:1359px){
  .container{max-width:1080px}
}
@media (max-width:1179px){
  .article-layout{grid-template-columns:minmax(0,1fr) 260px;gap:40px}
}
@media (max-width:1023px){
  .container{max-width:100%;padding:0 20px}
  .section{padding:72px 0}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px}
  .article-aside{position:static;order:-1}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line)}
  .cta-panel{grid-template-columns:minmax(0,1fr);padding:40px;gap:34px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px}
}
@media (max-width:860px){
  .channel-nav--desktop{display:none}
  .menu-toggle{display:inline-flex;align-items:center;justify-content:center}
  .brand-bar__inner{gap:16px}
  .hotline{display:none}
  .brand-bar__actions{margin-left:auto}
  .drawer{display:block}
}
@media (max-width:767px){
  .channel-bar{display:none}
  .container{padding:0 16px}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .article-hero{padding:30px 0 26px}
  .article-main{padding:36px 0 12px}
  .article-title{font-size:26px;margin:14px 0 16px}
  .breadcrumb__current{max-width:100%;white-space:normal}
  .prose{font-size:16.5px;line-height:1.85}
  .prose h2{margin-top:34px}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .stat-strip{grid-template-columns:minmax(0,1fr)}
  .stat{border-right:0;border-bottom:1px solid var(--line)}
  .stat:last-child{border-bottom:0}
  .cta-section{padding:56px 0}
  .cta-panel{padding:28px 20px;border-radius:var(--radius-card)}
  .cta-form{padding:20px}
  .footer-grid{grid-template-columns:minmax(0,1fr);padding-bottom:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .logo__text{font-size:16px}
}
@media (max-width:400px){
  .container{padding:0 14px}
  .article-title{font-size:23px}
  .prose table{font-size:14px}
  .prose th,.prose td{padding:10px 11px}
}

/* roulang page: category1 */
/* ===================== 设计变量 ===================== */
:root{
  --ink:#14161A;
  --ink-2:#3A3F46;
  --muted:#6B7078;
  --line:#E4E2DC;
  --bg:#FBFAF7;
  --surface:#FFFFFF;
  --surface-2:#F6F5F1;
  --brand:#0E7C66;
  --brand-2:#12B08C;
  --accent:#E1462B;
  --brand-on-dark:#35E0B0;
  --radius-sm:6px;
  --radius-md:10px;
  --radius-lg:16px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(20,22,26,.05);
  --shadow-2:0 8px 24px rgba(20,22,26,.08);
  --sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
  --gutter:24px;
}

/* ===================== 基础重置 ===================== */
*,*::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(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:var(--ink);text-decoration:none;transition:color .16s var(--ease),background-color .16s var(--ease),border-color .16s var(--ease)}
a:hover{color:var(--brand)}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.2;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
figure{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:rgba(14,124,102,.16)}

/* ===================== 布局容器 ===================== */
.container{width:100%;max-width:1080px;margin:0 auto;padding:0 var(--gutter)}
@media (min-width:1360px){ .container{max-width:1240px} }

.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:48px}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.2;margin-bottom:14px}
.section-head p{color:var(--muted);font-size:16px}
.eyebrow{
  display:inline-block;
  font-size:12.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--brand);
  font-weight:600;
  margin-bottom:14px;
}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:transform .16s var(--ease),box-shadow .16s var(--ease),background-color .16s var(--ease),border-color .16s var(--ease),color .16s var(--ease);
  white-space:nowrap;
}
.btn--primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1)}
.btn--primary:hover{background:var(--brand-2);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn--light{background:#fff;color:var(--ink)}
.btn--light:hover{background:var(--brand-on-dark);color:var(--ink);transform:translateY(-1px)}
.btn--sm{height:40px;padding:0 18px;font-size:14px}
.btn--block{width:100%}
.btn[disabled]{opacity:.4;pointer-events:none}

/* ===================== 头部 / 导航 ===================== */
.site-header{position:sticky;top:0;z-index:80;background:var(--surface)}
.brand-bar__inner{display:flex;align-items:center;gap:24px;height:72px}
.site-header.is-stuck .brand-bar{box-shadow:0 1px 0 var(--line)}

.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo__mark{
  width:34px;height:34px;border-radius:9px;
  display:grid;place-items:center;
  background:rgba(14,124,102,.09);
  color:var(--brand);
}
.logo__mark svg{width:20px;height:20px}
.logo__text{font-size:18px;font-weight:800;letter-spacing:-.02em;color:var(--ink);white-space:nowrap}
.logo:hover .logo__text{color:var(--brand)}

.channel-nav{display:flex;align-items:center;gap:2px}
.channel-nav a{
  position:relative;
  padding:8px 12px;
  font-size:14.5px;
  color:var(--ink-2);
  border-radius:var(--radius-pill);
  white-space:nowrap;
}
.channel-nav a:hover{color:var(--brand);background:rgba(14,124,102,.07)}
.channel-nav a.is-active{color:var(--ink);font-weight:600}
.channel-nav a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.channel-nav--desktop{margin-left:12px}

.brand-bar__actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.hotline{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--mono);font-size:13.5px;color:var(--ink-2);
  letter-spacing:.01em;
}
.hotline svg{width:16px;height:16px;color:var(--brand)}

.menu-toggle{
  display:none;width:42px;height:42px;border-radius:var(--radius-sm);
  border:1px solid var(--line);align-items:center;justify-content:center;color:var(--ink);
}
.menu-toggle svg{width:20px;height:20px}
.menu-toggle:hover{border-color:var(--brand);color:var(--brand)}

.channel-bar{display:none}
.drawer{display:none}

@media (max-width:960px){
  .channel-nav--desktop{display:none}
  .channel-bar{display:none}
  .channel-bar .channel-nav{height:48px;overflow-x:auto;flex-wrap:nowrap;-webkit-overflow-scrolling:touch}
  .hotline{display:none}
  .menu-toggle{display:inline-flex}
  .drawer{
    display:block;position:fixed;left:0;right:0;top:72px;bottom:0;
    background:rgba(20,22,26,.38);
    opacity:0;pointer-events:none;visibility:hidden;
    transition:opacity .24s var(--ease),visibility .24s var(--ease);
    z-index:70;
  }
  .drawer.is-open{opacity:1;pointer-events:auto;visibility:visible}
  .drawer__inner{
    background:var(--surface);
    border-bottom:1px solid var(--line);
    padding:16px var(--gutter) 22px;
    display:flex;flex-direction:column;gap:2px;
  }
  .drawer__inner a:not(.btn){
    padding:14px 4px;font-size:16px;color:var(--ink-2);
    border-bottom:1px solid var(--line);
  }
  .drawer__inner a:not(.btn).is-active{color:var(--brand);font-weight:600}
  .drawer__inner .btn{margin-top:16px}
}
@media (max-width:400px){
  :root{--gutter:16px}
}

/* ===================== 面包屑 ===================== */
.breadcrumb{padding:20px 0 0;font-size:13px;color:var(--muted)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li::after{content:"/";margin-left:8px;color:var(--line)}
.breadcrumb li:last-child::after{content:"";margin:0}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb [aria-current]{color:var(--ink-2)}

/* ===================== 分类页 Hero ===================== */
.page-hero{padding:44px 0 88px;position:relative;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;right:-160px;top:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(14,124,102,.10),rgba(14,124,102,0) 68%);
  pointer-events:none;
}
.page-hero__grid{
  display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center;position:relative;
}
.page-hero h1{font-size:clamp(30px,4.4vw,48px);line-height:1.15;letter-spacing:-.02em;margin-bottom:20px}
.page-hero__lead{font-size:17px;color:var(--ink-2);max-width:560px;margin-bottom:30px}
.page-hero__actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-bottom:26px}
.hero-mono{
  font-family:var(--mono);font-size:13px;color:var(--muted);
  display:flex;flex-wrap:wrap;gap:18px;
}
.hero-mono span{display:inline-flex;align-items:center;gap:7px}
.hero-mono b{color:var(--ink);font-weight:700}
.dot{width:6px;height:6px;border-radius:50%;background:var(--brand);display:inline-block}
.page-hero__figure{
  border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-1);background:var(--surface);aspect-ratio:4/3;
}
.page-hero__figure img{width:100%;height:100%;object-fit:cover}
@media (max-width:960px){
  .page-hero{padding:8px 0 64px}
  .page-hero__grid{grid-template-columns:1fr;gap:36px}
  .page-hero__figure{order:2;aspect-ratio:16/10}
}

/* ===================== 通用网格 / 卡片 ===================== */
.grid{display:grid;gap:24px}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}
@media (max-width:1023px){ .grid--3{grid-template-columns:repeat(2,1fr)} }
@media (max-width:767px){
  .grid--3,.grid--2{grid-template-columns:1fr;gap:16px}
}

.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:26px;
  box-shadow:var(--shadow-1);
  transition:transform .16s var(--ease),box-shadow .16s var(--ease),border-color .16s var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand)}
.card h3{font-size:18px;font-weight:600;margin-bottom:10px}
.card p{font-size:14.5px;color:var(--muted);line-height:1.75}
.card__index{
  font-family:var(--mono);font-size:13px;font-weight:700;color:var(--brand);
  display:inline-block;margin-bottom:14px;letter-spacing:.06em;
}
.card__icon{
  width:40px;height:40px;border-radius:var(--radius-sm);
  background:rgba(14,124,102,.08);color:var(--brand);
  display:grid;place-items:center;margin-bottom:16px;
}
.card__icon svg{width:20px;height:20px}

.badge{
  display:inline-flex;align-items:center;
  padding:4px 11px;border-radius:var(--radius-pill);
  font-size:12.5px;font-weight:600;
  background:rgba(14,124,102,.09);color:var(--brand);
  white-space:nowrap;
}
.badge--warn{background:rgba(225,70,43,.08);color:var(--accent)}
.badge--plain{background:var(--surface-2);color:var(--ink-2)}

/* ===================== 左文右表板块 ===================== */
.split{display:grid;grid-template-columns:5fr 7fr;gap:52px;align-items:start}
.split__aside h2{font-size:clamp(24px,3vw,34px);line-height:1.2;margin-bottom:16px}
.split__aside p{color:var(--muted);font-size:15.5px;margin-bottom:18px}
.split__aside .plain-list li{
  padding:12px 0 12px 26px;position:relative;font-size:14.5px;color:var(--ink-2);
  border-bottom:1px solid var(--line);
}
.split__aside .plain-list li:last-child{border-bottom:0}
.split__aside .plain-list li::before{
  content:"";position:absolute;left:0;top:21px;width:8px;height:8px;border-radius:2px;
  background:var(--brand);opacity:.85;
}
@media (max-width:1023px){ .split{grid-template-columns:1fr;gap:32px} }

.table-wrap{overflow-x:auto;border-radius:var(--radius-md)}
.spec-table{
  width:100%;min-width:560px;border-collapse:collapse;font-size:14.5px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden;
}
.spec-table caption{
  caption-side:top;text-align:left;font-size:13px;color:var(--muted);
  padding:0 0 12px;
}
.spec-table th{
  background:var(--surface-2);text-align:left;font-weight:600;font-size:13.5px;color:var(--ink-2);
  padding:13px 16px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.spec-table td{padding:14px 16px;border-bottom:1px solid var(--line);color:var(--ink-2);vertical-align:top}
.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table tbody tr:hover td{background:#FBFBF8}
.spec-table td strong{color:var(--ink);font-weight:600}
.spec-table .mono{font-family:var(--mono);font-size:13px;color:var(--ink)}

/* ===================== 核验四步 ===================== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);margin-top:8px}
.step{padding:34px 26px 30px;border-right:1px solid var(--line);transition:background-color .16s var(--ease)}
.step:last-child{border-right:0}
.step:hover{background:var(--surface)}
.step__num{
  font-family:var(--mono);font-size:40px;font-weight:700;line-height:1;
  color:var(--line);display:block;margin-bottom:18px;transition:color .16s var(--ease);
}
.step:hover .step__num{color:var(--brand)}
.step h3{font-size:20px;font-weight:600;margin-bottom:10px}
.step p{font-size:15px;color:var(--muted);line-height:1.75}
@media (max-width:1023px){
  .steps{grid-template-columns:repeat(2,1fr)}
  .step{border-bottom:1px solid var(--line)}
  .step:nth-child(2n){border-right:0}
}
@media (max-width:640px){
  .steps{grid-template-columns:1fr}
  .step{border-right:0;padding:26px 4px 24px}
  .step:last-child{border-bottom:0}
}

/* ===================== 案例证明 ===================== */
.case-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow-1);
  transition:transform .16s var(--ease),box-shadow .16s var(--ease),border-color .16s var(--ease);
}
.case-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand)}
.case-card__media{aspect-ratio:16/9;overflow:hidden;background:var(--surface-2)}
.case-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.case-card:hover .case-card__media img{transform:scale(1.03)}
.case-card__body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.case-card h3{font-size:18px;font-weight:600}
.case-card p{font-size:14.5px;color:var(--muted)}
.case-card__metrics{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
  display:flex;gap:26px;flex-wrap:wrap;
}
.metric__value{font-family:var(--mono);font-size:20px;font-weight:700;color:var(--ink);display:block;line-height:1.3}
.metric__label{font-size:12.5px;color:var(--muted)}

/* ===================== FAQ ===================== */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:52px;align-items:start}
.faq-intro h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px;line-height:1.2}
.faq-intro p{color:var(--muted);font-size:15.5px;margin-bottom:22px}
.faq-intro a.inline{color:var(--brand);font-weight:600;border-bottom:1px solid rgba(14,124,102,.3)}
.faq-intro a.inline:hover{border-bottom-color:var(--brand)}

.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item__q{
  width:100%;display:flex;align-items:flex-start;gap:18px;justify-content:space-between;
  text-align:left;padding:22px 0;font-size:18px;font-weight:600;color:var(--ink);
  transition:color .16s var(--ease);
}
.faq-item__q:hover{color:var(--brand)}
.faq-item__icon{
  flex:0 0 auto;width:20px;height:20px;margin-top:5px;position:relative;color:var(--brand);
  transition:transform .24s var(--ease);
}
.faq-item__icon::before,.faq-item__icon::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-item__icon::before{width:14px;height:1.6px}
.faq-item__icon::after{width:1.6px;height:14px}
.faq-item.is-open .faq-item__icon{transform:rotate(45deg)}
.faq-item__a{
  max-height:0;overflow:hidden;
  transition:max-height .24s var(--ease),opacity .24s var(--ease),padding .24s var(--ease);
  opacity:0;
}
.faq-item.is-open .faq-item__a{max-height:420px;opacity:1;padding-bottom:24px}
.faq-item__a p{font-size:15px;color:var(--muted);line-height:1.8;max-width:640px}
@media (max-width:1023px){ .faq-grid{grid-template-columns:1fr;gap:34px} }

/* ===================== CTA 表单 ===================== */
.cta{background:var(--ink);color:#fff;padding:88px 0;position:relative;overflow:hidden}
.cta::after{
  content:"";position:absolute;left:-120px;bottom:-180px;width:480px;height:480px;border-radius:50%;
  background:radial-gradient(circle,rgba(53,224,176,.16),rgba(53,224,176,0) 70%);
  pointer-events:none;
}
.cta__grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start;position:relative}
.cta__text h2{color:#fff;font-size:clamp(24px,3vw,34px);line-height:1.2;margin-bottom:16px}
.cta__text p{color:rgba(255,255,255,.72);font-size:15.5px;margin-bottom:24px}
.cta__points li{
  color:rgba(255,255,255,.82);font-size:14.5px;padding:10px 0 10px 24px;position:relative;
  border-top:1px solid rgba(255,255,255,.12);
}
.cta__points li:first-child{border-top:0}
.cta__points li::before{
  content:"";position:absolute;left:0;top:19px;width:8px;height:8px;border-radius:50%;
  background:var(--brand-on-dark);
}
.cta__phone{
  display:inline-flex;align-items:center;gap:8px;margin-top:26px;
  font-family:var(--mono);font-size:15px;color:var(--brand-on-dark);
}

.form-card{
  background:var(--surface);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow-2);
}
.form-card h3{font-size:20px;font-weight:600;margin-bottom:6px}
.form-card__hint{font-size:13.5px;color:var(--muted);margin-bottom:24px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink-2);margin-bottom:8px}
.field input,.field select{
  width:100%;height:48px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--radius-sm);
  background:#fff;font-size:14.5px;color:var(--ink);
  transition:border-color .16s var(--ease),box-shadow .16s var(--ease);
  appearance:none;
}
.field select{
  background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;
  background-size:6px 6px,6px 6px;background-repeat:no-repeat;padding-right:40px;
}
.field input::placeholder{color:#A9ADB4}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(14,124,102,.15);
}
.field.is-error input,.field.is-error select{border-color:#D33A2C;background:#FDF6F5}
.field__error{display:none;font-size:12.5px;color:#D33A2C;margin-top:6px}
.field.is-error .field__error{display:block}
.form-note{font-size:12.5px;color:var(--muted);margin-top:14px;line-height:1.7}
.form-msg{
  display:none;align-items:flex-start;gap:10px;margin-top:16px;
  padding:13px 15px;border-radius:var(--radius-sm);font-size:13.5px;line-height:1.7;
}
.form-msg.is-success{display:flex;border:1px solid var(--brand);background:rgba(14,124,102,.06);color:var(--brand)}
.form-msg.is-error{display:flex;border:1px solid #D33A2C;background:#FDF6F5;color:#C2331F}
.form-msg svg{width:18px;height:18px;flex:0 0 auto;margin-top:2px}
@media (max-width:1023px){ .cta{padding:64px 0} .cta__grid{grid-template-columns:1fr;gap:34px} }
@media (max-width:520px){ .form-card{padding:24px 18px} }
@media (max-width:767px){
  .cta .btn{width:100%}
}

/* ===================== 页脚 ===================== */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 32px;border-top:1px solid rgba(255,255,255,.1)}
.footer-grid{display:grid;grid-template-columns:4fr 2.5fr 2.5fr 3fr;gap:40px}
.footer-brand .logo{margin-bottom:18px}
.footer-brand .logo__mark{background:rgba(53,224,176,.12);color:var(--brand-on-dark)}
.footer-brand .logo__text{color:#fff}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);margin-bottom:14px}
.footer-brand .keyword-line{font-size:13px;color:rgba(255,255,255,.45);font-family:var(--mono)}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a,.footer-col span{font-size:14px;color:rgba(255,255,255,.6)}
.footer-col a:hover{color:#fff}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:14px 28px;align-items:center;
  font-size:13px;color:rgba(255,255,255,.45);
}
.footer-bottom a{color:rgba(255,255,255,.62)}
.footer-bottom a:hover{color:#fff}
@media (max-width:1023px){ .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px} }
@media (max-width:640px){
  .site-footer{padding:56px 0 26px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
}

/* ===================== 动效 ===================== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
.reveal:nth-child(2){transition-delay:.06s}
.reveal:nth-child(3){transition-delay:.12s}
.reveal:nth-child(4){transition-delay:.18s}
.reveal:nth-child(5){transition-delay:.24s}
.reveal:nth-child(6){transition-delay:.3s}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* ===================== 小屏收口 ===================== */
@media (max-width:767px){
  .section{padding:64px 0}
  .section-head{margin-bottom:32px}
  .card{padding:22px}
  .page-hero__actions .btn{width:100%}
}

/* roulang page: category2 */
:root{
  --ink:#14161A;
  --ink-2:#3A3F46;
  --muted:#6B7078;
  --line:#E4E2DC;
  --bg:#FBFAF7;
  --surface:#FFFFFF;
  --brand:#0E7C66;
  --brand-2:#12B08C;
  --accent:#E1462B;
  --brand-on-dark:#35E0B0;
  --sand:#F4F2ED;
  --radius-xs:6px;
  --radius-sm:8px;
  --radius:10px;
  --radius-lg:16px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(20,22,26,.05);
  --shadow-2:0 8px 24px rgba(20,22,26,.08);
  --sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::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(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:var(--ink);text-decoration:none;transition:color .16s var(--ease)}
a:hover{color:var(--brand)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;font-weight:700}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media (max-width:1359px){.container{max-width:1080px}}
@media (max-width:1023px){.container{max-width:100%}}
@media (max-width:767px){.container{padding:0 16px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-xs);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .16s var(--ease),box-shadow .16s var(--ease),background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.btn--primary{background:var(--brand);color:#fff}
.btn--primary:hover{background:var(--brand-2);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(14,124,102,.24)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-1px);box-shadow:var(--shadow-1)}
.btn--dark{background:var(--ink);color:#fff}
.btn--dark:hover{background:#000;color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(20,22,26,.22)}
.btn--sm{height:38px;padding:0 16px;font-size:14px;border-radius:var(--radius-xs)}
.btn--block{width:100%}
.btn[disabled],.btn[aria-disabled="true"]{opacity:.4;pointer-events:none}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand)}
.link-more svg{width:16px;height:16px;transition:transform .16s var(--ease)}
.link-more:hover svg{transform:translateX(3px)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12.5px;font-weight:600;line-height:1.5;
  background:rgba(14,124,102,.09);color:var(--brand);
}
.badge--line{background:transparent;border:1px solid var(--line);color:var(--muted);font-weight:500}
.badge--accent{background:rgba(225,70,43,.1);color:var(--accent)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12.5px;font-weight:700;letter-spacing:.08em;
  color:var(--brand);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand)}

/* ---------- 头部 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:var(--surface)}
.brand-bar{background:var(--surface);border-bottom:1px solid transparent;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.site-header.is-stuck .brand-bar{border-bottom-color:var(--line);box-shadow:0 1px 2px rgba(20,22,26,.05)}
.brand-bar__inner{display:flex;align-items:center;gap:20px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--ink)}
.logo:hover{color:var(--ink)}
.logo__mark{
  width:32px;height:32px;flex:0 0 32px;display:grid;place-items:center;
  border-radius:9px;background:var(--ink);color:var(--brand-on-dark);
}
.logo__mark svg{width:19px;height:19px}
.logo__text{white-space:nowrap}
.brand-bar__actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.hotline{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:14px;font-weight:700;color:var(--ink-2)}
.hotline svg{width:17px;height:17px;color:var(--brand)}
.channel-bar{border-bottom:1px solid var(--line);background:var(--surface)}
.channel-nav{display:flex;align-items:center;gap:4px;height:48px;overflow-x:auto;scrollbar-width:none}
.channel-nav::-webkit-scrollbar{display:none}
.channel-nav a{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--radius-pill);
  font-size:14.5px;color:var(--ink-2);white-space:nowrap;
  transition:background-color .16s var(--ease),color .16s var(--ease);
}
.channel-nav a:hover{background:var(--sand);color:var(--ink)}
.channel-nav a.is-active{background:var(--ink);color:#fff}
.channel-nav--desktop{display:none}
.menu-toggle{
  display:none;width:40px;height:40px;border-radius:var(--radius-xs);
  align-items:center;justify-content:center;border:1px solid var(--line);color:var(--ink);
  cursor:pointer;transition:border-color .16s var(--ease),background-color .16s var(--ease);
}
.menu-toggle:hover{border-color:var(--ink);background:var(--sand)}
.menu-toggle svg{width:20px;height:20px}
.drawer{position:fixed;inset:0;z-index:90;background:rgba(20,22,26,.45);opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease)}
.drawer.is-open{opacity:1;visibility:visible}
.drawer__inner{
  position:absolute;top:0;right:0;width:min(86vw,340px);height:100%;
  background:var(--surface);padding:84px 22px 28px;
  display:flex;flex-direction:column;gap:6px;
  transform:translateX(100%);transition:transform .28s var(--ease);
  overflow-y:auto;
}
.drawer.is-open .drawer__inner{transform:translateX(0)}
.drawer__inner a{display:block;padding:12px 14px;border-radius:var(--radius-xs);font-size:15.5px;color:var(--ink-2)}
.drawer__inner a:hover{background:var(--sand);color:var(--ink)}
.drawer__inner a.is-active{background:var(--ink);color:#fff}
.drawer__inner .btn{margin-top:16px;height:48px}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:20px 0 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--line)}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb [aria-current="page"]{color:var(--ink-2);font-weight:600}

/* ---------- Hero ---------- */
.hero{position:relative;padding:28px 0 72px;background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);border-bottom:1px solid var(--line)}
.hero__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;margin-top:36px}
.hero h1{font-size:clamp(30px,4.4vw,48px);line-height:1.16;font-weight:700;letter-spacing:-.02em}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero__lead{margin-top:22px;font-size:17px;line-height:1.8;color:var(--ink-2);max-width:56ch}
.hero__actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:32px}
.hero__meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.hero__points{margin-top:28px;display:grid;gap:10px}
.hero__points li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--ink-2)}
.hero__points svg{width:18px;height:18px;flex:0 0 18px;margin-top:5px;color:var(--brand)}
.hero__media{position:relative}
.hero__media figure{
  margin:0;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  background:var(--surface);box-shadow:var(--shadow-1);aspect-ratio:4/3;
}
.hero__media img{width:100%;height:100%;object-fit:cover}
.hero__strip{
  position:absolute;left:-14px;bottom:-22px;
  display:flex;align-items:center;gap:14px;
  padding:12px 18px;border-radius:var(--radius);
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-2);
}
.hero__strip strong{font-family:var(--mono);font-size:20px;font-weight:700;color:var(--brand)}
.hero__strip span{font-size:13px;color:var(--muted);line-height:1.4}

/* ---------- 强调带 ---------- */
.band{background:var(--ink);color:#fff;padding:56px 0}
.band__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.band__item{border-left:1px solid rgba(255,255,255,.14);padding-left:22px}
.band__item:first-child{border-left:0;padding-left:0}
.band__num{font-family:var(--mono);font-size:clamp(30px,3.6vw,42px);font-weight:700;line-height:1;color:var(--brand-on-dark)}
.band__num small{font-size:15px;font-weight:600;margin-left:4px;color:rgba(255,255,255,.72)}
.band__label{margin-top:12px;font-size:14px;color:rgba(255,255,255,.72);line-height:1.6}
.band__note{margin-top:34px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);display:flex;flex-wrap:wrap;gap:12px 28px;font-size:13.5px;color:rgba(255,255,255,.6)}
.band__note b{color:var(--brand-on-dark);font-weight:600}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section--sand{background:var(--sand);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section--tight{padding:72px 0}
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.22;font-weight:700;margin-top:14px}
.section-head p{margin-top:16px;font-size:16px;line-height:1.8;color:var(--muted)}
.section-head--split{display:flex;gap:40px;align-items:flex-end;justify-content:space-between;max-width:none}
.section-head--split .section-head__text{max-width:640px}

/* ---------- 卡片网格 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .16s var(--ease),box-shadow .16s var(--ease),border-color .16s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--shadow-2)}
.card__media{aspect-ratio:16/10;overflow:hidden;border-bottom:1px solid var(--line);background:var(--sand)}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card:hover .card__media img{transform:scale(1.03)}
.card__body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card__top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.card h3{font-size:19px;font-weight:600;line-height:1.4}
.card p{font-size:15px;line-height:1.75;color:var(--muted)}
.card__spec{margin-top:auto;padding-top:14px;border-top:1px dashed var(--line);display:grid;gap:8px}
.card__spec li{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13.5px;color:var(--muted)}
.card__spec b{font-family:var(--mono);font-weight:700;color:var(--ink);font-size:13.5px}

/* ---------- 对照表 ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-1)}
.spec-table{width:100%;border-collapse:collapse;min-width:780px;font-size:14.5px}
.spec-table caption{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.spec-table th,.spec-table td{padding:15px 20px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.spec-table thead th{background:var(--sand);font-size:13.5px;font-weight:600;color:var(--ink-2);letter-spacing:.02em;white-space:nowrap}
.spec-table tbody th{font-weight:600;color:var(--ink);width:168px;background:#FCFBF8}
.spec-table td{color:var(--ink-2);font-family:var(--mono);font-variant-numeric:tabular-nums}
.spec-table tbody tr:last-child th,.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table tbody tr:hover th,.spec-table tbody tr:hover td{background:#FAF9F6}
.table-note{margin-top:16px;font-size:13.5px;color:var(--muted)}

/* ---------- 流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:34px;border-top:1px solid var(--line)}
.flow__item{padding:28px 24px 0 0;border-right:1px solid var(--line)}
.flow__item:last-child{border-right:0}
.flow__num{font-family:var(--mono);font-size:34px;font-weight:700;line-height:1;color:var(--line);transition:color .16s var(--ease)}
.flow__item:hover .flow__num{color:var(--brand)}
.flow__item h3{font-size:18px;font-weight:600;margin-top:14px}
.flow__item p{margin-top:10px;font-size:15px;line-height:1.75;color:var(--muted)}

/* ---------- 案例 ---------- */
.case{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .16s var(--ease),box-shadow .16s var(--ease),border-color .16s var(--ease)}
.case:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--shadow-2)}
.case__media{aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--line);background:var(--sand)}
.case__media img{width:100%;height:100%;object-fit:cover}
.case__body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.case__tags{display:flex;flex-wrap:wrap;gap:8px}
.case h3{font-size:18px;font-weight:600;line-height:1.45}
.case__result{font-size:15px;line-height:1.75;color:var(--muted)}
.case__data{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);display:flex;align-items:baseline;gap:10px}
.case__data strong{font-family:var(--mono);font-size:22px;font-weight:700;color:var(--accent);line-height:1}
.case__data span{font-size:13px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:56px;align-items:start}
.faq__aside h2{font-size:clamp(22px,2.6vw,30px);line-height:1.25}
.faq__aside p{margin-top:16px;font-size:15px;line-height:1.8;color:var(--muted);max-width:36ch}
.faq__contact{margin-top:26px;padding:20px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
.faq__contact strong{display:block;font-family:var(--mono);font-size:19px;color:var(--ink)}
.faq__contact span{display:block;margin-top:6px;font-size:13.5px;color:var(--muted)}
.faq__contact a{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14.5px;font-weight:600;color:var(--brand)}
.faq__list{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:20px;
  padding:22px 0;text-align:left;cursor:pointer;
  font-size:18px;font-weight:600;line-height:1.5;color:var(--ink);
}
.faq-q:hover{color:var(--brand)}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 20px;color:var(--brand)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--ease)}
.faq-icon::before{left:0;top:9px;width:20px;height:2px}
.faq-icon::after{left:9px;top:0;width:2px;height:20px}
.faq-item.is-open .faq-icon::after{transform:rotate(45deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a p{padding:0 0 24px;font-size:15px;line-height:1.85;color:var(--muted);max-width:72ch}

/* ---------- CTA / 表单 ---------- */
.cta{
  position:relative;padding:96px 0;
  background-image:linear-gradient(rgba(20,22,26,.95),rgba(20,22,26,.95)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;color:#fff;
}
.cta__grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.cta h2{font-size:clamp(24px,3vw,34px);line-height:1.22;color:#fff}
.cta__lead{margin-top:18px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.72);max-width:48ch}
.cta__list{margin-top:30px;display:grid;gap:14px}
.cta__list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:rgba(255,255,255,.82)}
.cta__list svg{width:18px;height:18px;flex:0 0 18px;margin-top:5px;color:var(--brand-on-dark)}
.cta__panel{background:var(--surface);border-radius:var(--radius-lg);padding:30px;color:var(--ink);box-shadow:0 20px 50px rgba(0,0,0,.28)}
.cta__panel h3{font-size:20px;font-weight:700}
.cta__panel>p{margin-top:8px;font-size:14px;color:var(--muted)}
.form{margin-top:22px;display:grid;gap:16px}
.form__row{display:grid;gap:7px}
.form__row label{font-size:14px;font-weight:600;color:var(--ink-2)}
.form__row input,.form__row select{
  height:48px;padding:0 14px;border-radius:var(--radius-xs);
  border:1px solid var(--line);background:var(--surface);color:var(--ink);
  font-size:15px;transition:border-color .16s var(--ease),box-shadow .16s var(--ease);
}
.form__row input::placeholder{color:#A9ADB3}
.form__row input:focus,.form__row select:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(14,124,102,.15);
}
.form__row.has-error input,.form__row.has-error select{border-color:#D33A2C;background:#FDF4F3}
.form__grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form__hint{font-size:12.5px;color:var(--muted)}
.form__msg{display:none;align-items:flex-start;gap:8px;padding:12px 14px;border-radius:var(--radius-xs);font-size:14px;line-height:1.6}
.form__msg.is-visible{display:flex}
.form__msg--ok{background:rgba(14,124,102,.08);border:1px solid var(--brand);color:var(--brand)}
.form__msg--err{background:#FDF4F3;border:1px solid #D33A2C;color:#D33A2C}
.form__msg svg{width:17px;height:17px;flex:0 0 17px;margin-top:3px}
.spinner{
  width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(255,255,255,.4);border-top-color:#fff;
  animation:spin .7s linear infinite;display:none;
}
.btn.is-loading .spinner{display:inline-block}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#fff;padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.site-footer .logo{color:#fff}
.site-footer .logo:hover{color:#fff}
.site-footer .logo__mark{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:var(--brand-on-dark)}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:38ch}
.footer-brand .keyword-line{margin-top:16px;font-family:var(--mono);font-size:12.5px;color:var(--brand-on-dark);letter-spacing:.02em}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;letter-spacing:.02em;margin-bottom:18px}
.footer-col li{margin-bottom:11px}
.footer-col a,.footer-col span{font-size:14px;color:rgba(255,255,255,.66)}
.footer-col a:hover{color:#fff}
.footer-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:12px 28px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.62)}
.footer-bottom a:hover{color:#fff}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px)}
.reveal.is-in{opacity:1;transform:none;transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in[data-delay="1"]{transition-delay:.06s}
.reveal.is-in[data-delay="2"]{transition-delay:.12s}
.reveal.is-in[data-delay="3"]{transition-delay:.18s}
.reveal.is-in[data-delay="4"]{transition-delay:.24s}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .hero{padding:20px 0 56px}
  .hero__grid{grid-template-columns:1fr;gap:40px}
  .hero__strip{position:static;margin-top:18px;left:auto;bottom:auto}
  .band__grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .band__item:nth-child(odd){border-left:0;padding-left:0}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr)}
  .flow__item{border-right:0;border-bottom:1px solid var(--line);padding:26px 20px 26px 0}
  .flow__item:nth-child(2n){padding-right:0;padding-left:24px;border-left:1px solid var(--line)}
  .faq{grid-template-columns:1fr;gap:36px}
  .cta__grid{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:767px){
  .section{padding:64px 0}
  .section--tight{padding:56px 0}
  .brand-bar__inner{height:64px;gap:12px}
  .channel-bar{display:none}
  .menu-toggle{display:inline-flex}
  .hotline{display:none}
  .brand-bar__actions .btn--primary{display:none}
  .hero__actions{gap:12px}
  .hero__actions .btn{width:100%}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .band{padding:44px 0}
  .band__grid{grid-template-columns:1fr;gap:24px}
  .band__item{border-left:0;padding-left:0;border-top:1px solid rgba(255,255,255,.14);padding-top:20px}
  .band__item:first-child{border-top:0;padding-top:0}
  .flow{grid-template-columns:1fr}
  .flow__item{padding:24px 0;border-bottom:1px solid var(--line)}
  .flow__item:nth-child(2n){padding-left:0;border-left:0}
  .section-head--split{display:block}
  .cta{padding:64px 0}
  .cta__panel{padding:22px}
  .form__grid-2{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .spec-table th,.spec-table td{padding:13px 14px}
}
@media (max-width:400px){
  .container{padding:0 14px}
  .card__body,.case__body{padding:20px}
  .logo{font-size:15.5px}
}