/* roulang page: index */
:root{
  --deep:#0B3B2E;
  --green:#18A36B;
  --orange:#FF6B2C;
  --bg:#F4F6F1;
  --dark:#0A1F1A;
  --ink:#12201C;
  --ink-2:#5A6B64;
  --line:#D9E2DA;
  --white:#ffffff;
  --danger:#D64545;
  --radius-lg:18px;
  --radius-sm:14px;
  --radius-pill:999px;
  --shadow:0 8px 24px rgba(11,59,46,.08);
  --shadow-hover:0 14px 36px rgba(11,59,46,.14);
  --sec:96px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-sm);}
a{color:var(--deep);text-decoration:none;transition:color .25s ease;}
a:hover{color:var(--green);}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;color:var(--ink);letter-spacing:.2px;}
h1{font-size:48px;}
h2{font-size:34px;}
h3{font-size:21px;font-weight:600;}
p{margin:0 0 16px;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
::selection{background:rgba(24,163,107,.2);}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--orange);
  outline-offset:2px;
  border-radius:6px;
}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
.section{padding:var(--sec) 0;}
.section-tight{padding:64px 0;}
.section-alt{background:#EDF2EC;}
.sec-head{max-width:760px;margin-bottom:52px;}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;letter-spacing:1.5px;
  color:var(--green);text-transform:uppercase;margin-bottom:14px;
}
.sec-eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--orange);}
.sec-head p{color:var(--ink-2);font-size:16px;margin:14px 0 0;}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(244,246,241,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:24px;height:82px;}
.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--deep);}
.brand:hover{color:var(--deep);}
.brand-dot{width:10px;height:10px;border-radius:50%;background:var(--orange);box-shadow:0 0 0 5px rgba(255,107,44,.15);flex:none;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-block;
  padding:9px 15px;font-size:15px;color:var(--ink-2);
  border-radius:var(--radius-pill);transition:all .25s ease;
}
.nav-link:hover{color:var(--deep);background:rgba(24,163,107,.09);}
.nav-link.is-active{color:var(--deep);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:1px;transform:translateX(-50%);
  width:16px;height:2px;border-radius:2px;background:var(--orange);
}
.header-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--deep);
  font-size:17px;cursor:pointer;
}
.mobile-drawer{
  position:fixed;inset:0;z-index:200;
  background:rgba(10,31,26,.98);
  padding:26px 24px 40px;
  display:none;flex-direction:column;
}
.mobile-drawer.is-open{display:flex;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:38px;}
.drawer-brand{color:#fff;font-size:18px;font-weight:700;}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.25);
  background:transparent;color:#fff;font-size:18px;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;gap:6px;}
.drawer-nav a{
  color:#E8F1EA;font-size:22px;font-weight:600;padding:16px 0;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.drawer-nav a:hover{color:var(--orange);}
.drawer-note{color:rgba(232,241,234,.62);font-size:14px;margin-top:auto;padding-top:28px;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--radius-pill);
  font-size:16px;font-weight:600;cursor:pointer;
  border:1px solid transparent;transition:all .25s ease;white-space:nowrap;
}
.btn-primary{background:var(--deep);color:#fff;box-shadow:0 8px 20px rgba(11,59,46,.18);}
.btn-primary:hover{background:var(--green);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-ghost{background:transparent;color:var(--deep);border-color:var(--line);}
.btn-ghost:hover{background:#fff;color:var(--deep);border-color:var(--green);transform:translateY(-2px);}
.btn-accent{background:var(--orange);color:#fff;}
.btn-accent:hover{background:#ef5c1c;color:#fff;transform:translateY(-2px);}
.btn-sm{padding:10px 20px;font-size:15px;}
.btn-block{width:100%;}
.text-link{display:inline-flex;align-items:center;gap:7px;font-weight:600;font-size:15px;color:var(--deep);}
.text-link i{transition:transform .25s ease;font-size:13px;}
.text-link:hover i{transform:translateX(4px);}

/* ===== Hero ===== */
.hero{
  position:relative;overflow:hidden;
  padding:92px 0 96px;
  background:linear-gradient(160deg,#F4F6F1 0%,#E7F0E9 58%,#E1EEE6 100%);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center right;
  opacity:.13;pointer-events:none;
}
.hero-track{
  position:absolute;right:-120px;top:40px;width:520px;height:520px;
  border:1px solid rgba(24,163,107,.22);border-radius:50%;pointer-events:none;
}
.hero-track::before{
  content:"";position:absolute;inset:64px;border:1px dashed rgba(255,107,44,.28);border-radius:50%;
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;
  padding:7px 16px;border-radius:var(--radius-pill);
  background:rgba(24,163,107,.12);color:var(--deep);
  font-size:14px;font-weight:600;margin-bottom:22px;
}
.hero-badge i{color:var(--orange);font-size:12px;}
.hero h1{font-size:50px;margin-bottom:20px;}
.hero h1 em{font-style:normal;color:var(--green);}
.hero-lead{font-size:17px;color:var(--ink-2);max-width:600px;margin-bottom:32px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:26px;padding-top:24px;border-top:1px solid rgba(11,59,46,.14);}
.hero-fact strong{display:block;font-size:22px;color:var(--deep);line-height:1.3;}
.hero-fact span{font-size:14px;color:var(--ink-2);}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;border-radius:var(--radius-lg);
  box-shadow:0 20px 46px rgba(11,59,46,.18);
}
.hero-float{
  position:absolute;left:-18px;bottom:26px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:14px 18px;box-shadow:var(--shadow);display:flex;align-items:center;gap:12px;
}
.hero-float i{color:var(--green);font-size:18px;}
.hero-float strong{display:block;font-size:15px;color:var(--deep);}
.hero-float span{font-size:13px;color:var(--ink-2);}

/* ===== 痛点区 ===== */
.pain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.pain-item{
  display:flex;gap:18px;padding:28px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  transition:all .28s ease;
}
.pain-item:hover{box-shadow:var(--shadow-hover);border-color:var(--green);transform:translateY(-3px);}
.pain-num{
  flex:none;width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,107,44,.1);color:var(--orange);font-weight:700;font-size:16px;
}
.pain-item h3{margin-bottom:8px;font-size:18px;}
.pain-item p{margin:0;color:var(--ink-2);font-size:15px;line-height:1.8;}

/* ===== 解决方案 ===== */
.solve-grid{display:grid;grid-template-columns:.86fr 1.14fr;gap:52px;align-items:start;}
.solve-list{margin-top:26px;display:flex;flex-direction:column;gap:14px;}
.solve-list li{display:flex;gap:12px;font-size:15px;color:var(--ink-2);}
.solve-list i{color:var(--green);margin-top:6px;font-size:13px;}
.solve-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.card{
  position:relative;overflow:hidden;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px;box-shadow:var(--shadow);transition:all .28s ease;
}
.card::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:3px;
  background:linear-gradient(90deg,var(--green),var(--orange));opacity:.85;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--green);}
.card:hover .card-title{color:var(--green);}
.card-icon{
  width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:rgba(11,59,46,.07);color:var(--deep);font-size:19px;margin-bottom:18px;
}
.card-title{font-size:19px;font-weight:600;margin-bottom:10px;transition:color .25s ease;}
.card p{color:var(--ink-2);font-size:15px;margin-bottom:16px;}

/* ===== 成果数据 ===== */
.stats-band{
  background:var(--deep);color:#fff;border-radius:26px;
  padding:56px 48px;display:grid;grid-template-columns:repeat(4,1fr);gap:32px;
  position:relative;overflow:hidden;
}
.stats-band::after{
  content:"";position:absolute;right:-80px;bottom:-100px;width:320px;height:320px;
  border:1px solid rgba(255,255,255,.14);border-radius:50%;
}
.stat{padding-left:22px;border-left:1px solid rgba(255,255,255,.18);position:relative;z-index:1;}
.stat:first-child{border-left:none;padding-left:0;}
.stat strong{display:block;font-size:42px;line-height:1.15;color:#fff;font-weight:700;}
.stat strong small{font-size:17px;font-weight:600;margin-left:4px;color:var(--orange);}
.stat span{display:block;font-size:14px;color:rgba(255,255,255,.72);margin-top:8px;}

/* ===== 证言 ===== */
.quote-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;}
.quote-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px;box-shadow:var(--shadow);transition:all .28s ease;
}
.quote-card:nth-child(2){margin-top:38px;}
.quote-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);}
.quote-card i.quote-mark{color:rgba(24,163,107,.35);font-size:22px;}
.quote-card p{font-size:16px;color:var(--ink);margin:16px 0 22px;line-height:1.85;}
.quote-user{display:flex;align-items:center;gap:14px;padding-top:18px;border-top:1px solid var(--line);}
.quote-user img{width:46px;height:46px;border-radius:50%;object-fit:cover;flex:none;}
.quote-user strong{display:block;font-size:15px;color:var(--deep);}
.quote-user span{font-size:13px;color:var(--ink-2);}

/* ===== 最新信息 ===== */
.post-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:start;}
.post-feature{
  display:block;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);
  transition:all .28s ease;
}
.post-feature:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px);border-color:var(--green);}
.post-feature-media{height:250px;overflow:hidden;}
.post-feature-media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.post-feature-body{padding:28px;}
.post-feature h3{font-size:23px;margin:12px 0 12px;color:var(--ink);}
.post-feature:hover h3{color:var(--green);}
.post-feature p{color:var(--ink-2);font-size:15px;margin-bottom:18px;}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--ink-2);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--radius-pill);
  background:rgba(24,163,107,.12);color:var(--deep);
  font-size:13px;font-weight:600;
}
.badge-orange{background:rgba(255,107,44,.13);color:#C4470F;}
.post-list{display:flex;flex-direction:column;gap:16px;}
.post-item{
  display:flex;gap:16px;padding:20px 22px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  transition:all .25s ease;
}
.post-item:hover{border-color:var(--green);box-shadow:var(--shadow);transform:translateX(4px);}
.post-item-media{flex:none;width:92px;height:74px;border-radius:10px;overflow:hidden;}
.post-item-media img{width:100%;height:100%;object-fit:cover;border-radius:10px;}
.post-item h3{font-size:16.5px;font-weight:600;margin-bottom:6px;color:var(--ink);}
.post-item:hover h3{color:var(--green);}
.post-item p{font-size:14px;color:var(--ink-2);margin:0 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.empty-state{
  padding:52px 24px;text-align:center;background:#fff;
  border:1px dashed var(--line);border-radius:var(--radius-lg);
}
.empty-state i{font-size:26px;color:var(--green);display:block;margin-bottom:14px;}
.empty-state p{margin:0;color:var(--ink-2);font-size:15px;}

/* ===== FAQ ===== */
.faq-wrap{max-width:920px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:24px 46px 24px 0;
  position:relative;font-size:18px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:8px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--green);transition:transform .28s ease;
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg);color:var(--orange);}
.faq-item summary:hover{color:var(--green);}
.faq-answer{padding:0 60px 26px 0;color:var(--ink-2);font-size:15.5px;line-height:1.85;}
.faq-answer p{margin:0;}

/* ===== CTA ===== */
.cta-band{
  background:var(--dark);color:#fff;border-radius:26px;
  padding:66px 56px;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-90px;top:-90px;width:360px;height:360px;
  border:1px dashed rgba(255,255,255,.16);border-radius:50%;
}
.cta-inner{position:relative;display:grid;grid-template-columns:1.25fr .75fr;gap:40px;align-items:center;}
.cta-band h2{color:#fff;font-size:32px;margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.76);margin:0;font-size:16px;max-width:620px;}
.cta-actions{display:flex;flex-direction:column;gap:12px;}

/* ===== 页脚 ===== */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:72px 0 28px;margin-top:var(--sec);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12);}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:19px;font-weight:700;margin-bottom:16px;}
.footer-brand .brand-dot{background:var(--orange);}
.site-footer p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.66);margin:0 0 14px;}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:18px;font-weight:600;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{color:rgba(255,255,255,.7);font-size:14.5px;}
.footer-col a:hover{color:var(--orange);}
.footer-col li span{font-size:14.5px;color:rgba(255,255,255,.66);}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;
  padding-top:24px;font-size:13.5px;color:rgba(255,255,255,.55);
}

@media (max-width:1024px){
  :root{--sec:72px;}
  h1{font-size:38px;}
  h2{font-size:29px;}
  .hero h1{font-size:40px;}
  .hero-inner{grid-template-columns:1fr;gap:44px;}
  .hero-visual{max-width:560px;}
  .solve-grid{grid-template-columns:1fr;gap:40px;}
  .post-layout{grid-template-columns:1fr;}
  .stats-band{grid-template-columns:repeat(2,1fr);padding:44px 34px;gap:26px;}
  .stat:nth-child(3){border-left:none;padding-left:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .cta-inner{grid-template-columns:1fr;gap:28px;}
  .cta-actions{flex-direction:row;flex-wrap:wrap;}
}
@media (max-width:768px){
  .main-nav{display:none;}
  .header-actions .btn{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:70px;}
  .hero{padding:64px 0 68px;}
  .hero h1{font-size:32px;}
  .hero-track{display:none;}
  .hero-facts{gap:20px;}
  .pain-grid{grid-template-columns:1fr;}
  .solve-cards{grid-template-columns:1fr;}
  .quote-grid{grid-template-columns:1fr;}
  .quote-card:nth-child(2){margin-top:0;}
  .stats-band{grid-template-columns:1fr;padding:36px 26px;}
  .stat{padding-left:0;border-left:none;padding-bottom:22px;border-bottom:1px solid rgba(255,255,255,.14);}
  .stat:last-child{border-bottom:none;padding-bottom:0;}
  .stat strong{font-size:34px;}
  .cta-band{padding:44px 26px;}
  .cta-band h2{font-size:26px;}
  .post-feature-media{height:200px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  h1{font-size:29px;}
  h2{font-size:24px;}
  .hero h1{font-size:28px;}
  .hero-lead{font-size:16px;}
  .btn{width:100%;padding:13px 20px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .post-item{flex-direction:column;gap:12px;}
  .post-item-media{width:100%;height:140px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .hero-float{position:static;margin-top:16px;left:auto;bottom:auto;}
  .faq-item summary{font-size:16.5px;padding-right:38px;}
  .faq-answer{padding-right:24px;}
}

/* roulang page: article */
:root{
  --ink:#0B3B2E;
  --ink-soft:#0F4A3A;
  --green:#18A36B;
  --green-soft:#E7F5EE;
  --orange:#FF6B2C;
  --orange-soft:#FFEDE3;
  --bg:#F4F6F1;
  --dark:#0A1F1A;
  --text:#12201C;
  --muted:#5A6B64;
  --border:#D9E2DA;
  --white:#FFFFFF;
  --r-lg:18px;
  --r-sm:14px;
  --shadow:0 8px 24px rgba(11,59,46,.08);
  --shadow-hover:0 14px 36px rgba(11,59,46,.14);
  --container:1240px;
  --sec:96px;
}

*,*::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","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  letter-spacing:.01em;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s ease,border-color .22s ease,opacity .22s ease;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--ink);}
p{margin:0;}
figure{margin:0;}
:focus-visible{outline:2px solid var(--orange);outline-offset:3px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--sec) 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:34px;letter-spacing:-.01em;}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--green);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--orange);}
.endline{height:1px;background:var(--border);border:0;margin:0;}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(244,246,241,.94);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:84px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.brand-dot{width:10px;height:10px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px rgba(24,163,107,.14);flex:none;}
.main-nav{display:flex;align-items:center;gap:34px;}
.nav-link{position:relative;font-size:15px;color:var(--muted);padding:6px 0;}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--green);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:14px;position:relative;z-index:90;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;border:1px solid var(--border);
  color:var(--ink);background:#fff;font-size:17px;transition:all .22s ease;
}
.nav-toggle:hover{border-color:var(--green);color:var(--green);}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-size:15px;font-weight:600;line-height:1;
  padding:14px 28px;border:1px solid transparent;
  transition:transform .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:var(--green);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-ghost{background:transparent;border-color:var(--border);color:var(--ink);}
.btn-ghost:hover{background:#fff;border-color:var(--green);color:var(--green);transform:translateY(-2px);}
.btn-orange{background:var(--orange);color:#fff;}
.btn-orange:hover{background:#F55A19;color:#fff;transform:translateY(-2px);box-shadow:0 14px 32px rgba(255,107,44,.32);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.42);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;transform:translateY(-2px);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-block{width:100%;}

/* ===== Tags ===== */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;
  font-size:13px;font-weight:600;line-height:1.5;
  background:var(--green-soft);color:var(--ink);
}
.tag-orange{background:rgba(255,107,44,.18);color:#FFB08A;}

/* ===== Breadcrumb ===== */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13.5px;color:rgba(255,255,255,.62);margin-bottom:26px;
}
.breadcrumb a{color:rgba(255,255,255,.78);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:#7FE0B4;font-weight:600;}

/* ===== Article hero ===== */
.article-hero{position:relative;background:var(--dark);color:#fff;padding:80px 0 88px;overflow:hidden;}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:.20;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(150deg,rgba(10,31,26,.72) 0%,rgba(11,59,46,.90) 62%,rgba(10,31,26,.96) 100%);
}
.article-hero .container{position:relative;z-index:2;}
.article-hero h1{
  color:#fff;font-size:48px;line-height:1.28;letter-spacing:-.015em;
  max-width:980px;margin:18px 0 24px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:16px;color:rgba(255,255,255,.76);font-size:14.5px;}
.article-meta span{display:inline-flex;align-items:center;gap:8px;}
.article-meta .dot{width:5px;height:5px;border-radius:50%;background:var(--orange);display:inline-block;}
.hero-track{position:absolute;right:-60px;bottom:-40px;width:420px;height:220px;border:1px dashed rgba(127,224,180,.28);border-radius:50%;z-index:1;}

/* ===== Article body ===== */
.article-wrap{padding:76px 0 88px;}
.article-shell{max-width:860px;margin:0 auto;}
.article-body{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--shadow);padding:52px 60px 46px;
  font-size:16.5px;line-height:1.92;color:var(--text);
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body strong{color:var(--ink);}
.article-body h2{
  position:relative;font-size:30px;line-height:1.42;color:var(--ink);
  margin:46px 0 18px;padding-left:18px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:4px;border-radius:3px;background:var(--green);
}
.article-body h3{font-size:22px;margin:34px 0 14px;color:var(--ink);}
.article-body h4{font-size:18px;margin:26px 0 12px;color:var(--ink-soft);}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.35em;}
.article-body ul li{list-style:none;position:relative;margin-bottom:.6em;padding-left:4px;}
.article-body ul li::before{
  content:"";position:absolute;left:-1.05em;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--green);opacity:.85;
}
.article-body ol{list-style:decimal;}
.article-body ol li{margin-bottom:.6em;padding-left:4px;}
.article-body ol li::marker{color:var(--green);font-weight:700;}
.article-body blockquote{
  margin:30px 0;padding:20px 26px;background:#F1F8F4;
  border-left:4px solid var(--green);border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--ink);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-sm);margin:26px 0;width:100%;}
.article-body figure{margin:26px 0;}
.article-body figcaption{margin-top:10px;font-size:14px;color:var(--muted);text-align:center;}
.article-body a{color:var(--green);border-bottom:1px solid rgba(24,163,107,.35);}
.article-body a:hover{color:var(--orange);border-bottom-color:rgba(255,107,44,.5);}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--border);padding:12px 15px;text-align:left;vertical-align:top;}
.article-body th{background:#F1F8F4;color:var(--ink);font-weight:600;}
.article-body code{
  background:#F1F8F4;color:var(--ink-soft);padding:2px 7px;border-radius:6px;font-size:.9em;
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;
}
.article-body pre{
  background:var(--dark);color:#D6E8DF;padding:20px 22px;border-radius:var(--r-sm);
  overflow:auto;font-size:14px;line-height:1.7;margin:26px 0;
}
.article-body pre code{background:transparent;color:inherit;padding:0;}
.article-body hr{border:0;height:1px;background:var(--border);margin:38px 0;}

.article-foot{
  margin-top:36px;padding-top:30px;border-top:1px solid var(--border);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
}
.article-foot-note{font-size:14px;color:var(--muted);}
.article-foot-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ===== Related cards ===== */
.related{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.card-grid{margin-top:8px;}
.card{
  display:flex;flex-direction:column;height:100%;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  overflow:hidden;position:relative;
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--green);opacity:.9;}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:rgba(24,163,107,.45);}
.card-media{aspect-ratio:16/9;overflow:hidden;background:var(--green-soft);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.card:hover .card-media img{transform:scale(1.05);}
.card-body{padding:24px 24px 26px;display:flex;flex-direction:column;flex:1;}
.card-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted);margin-bottom:12px;}
.card-title{font-size:19px;line-height:1.5;color:var(--ink);margin-bottom:10px;transition:color .22s ease;}
.card:hover .card-title{color:var(--orange);}
.card-text{font-size:14.5px;color:var(--muted);line-height:1.78;flex:1;}
.card-link{
  margin-top:18px;display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--green);
}
.card-link i{transition:transform .22s ease;}
.card:hover .card-link i{transform:translateX(4px);}

/* ===== CTA ===== */
.cta-section{padding:0 0 var(--sec);}
.cta-box{
  position:relative;overflow:hidden;
  background:var(--dark);border-radius:24px;
  padding:56px 58px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;
}
.cta-box::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-3.png') right center/cover no-repeat;
  opacity:.14;
}
.cta-box::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(10,31,26,.94) 0%,rgba(11,59,46,.80) 70%,rgba(11,59,46,.60) 100%);
}
.cta-copy,.cta-actions{position:relative;z-index:2;}
.cta-copy{max-width:620px;}
.cta-copy h2{color:#fff;font-size:32px;line-height:1.38;}
.cta-copy p{margin-top:14px;color:rgba(255,255,255,.78);font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ===== Empty state ===== */
.empty-wrap{padding:110px 0 120px;}
.empty-card{
  max-width:640px;margin:0 auto;text-align:center;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--shadow);padding:64px 40px;
}
.empty-card i{font-size:36px;color:var(--green);}
.empty-card h1{font-size:30px;margin:20px 0 14px;}
.empty-card p{color:var(--muted);margin-bottom:28px;}

/* ===== Footer ===== */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:72px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12);}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62);}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:20px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:12px;font-size:14.5px;}
.footer-col ul li a,.footer-col ul li span{color:rgba(255,255,255,.66);}
.footer-col ul li a:hover{color:var(--green);}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding-top:24px;font-size:13.5px;color:rgba(255,255,255,.48);
}

/* ===== Responsive ===== */
@media (max-width:1180px){
  .article-hero h1{font-size:42px;}
  .article-body{padding:46px 44px 42px;}
}
@media (max-width:1023px){
  :root{--sec:72px;}
  .header-inner{height:74px;}
  .main-nav{
    position:fixed;inset:0;z-index:80;
    background:var(--bg);
    flex-direction:column;justify-content:center;gap:30px;
    padding:64px 32px;
    transform:translateX(100%);transition:transform .32s ease;
  }
  .main-nav.is-open{transform:translateX(0);}
  .main-nav .nav-link{font-size:22px;font-weight:600;color:var(--ink);}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-sm{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-box{padding:44px 36px;}
  .cta-copy h2{font-size:27px;}
}
@media (max-width:767px){
  :root{--sec:56px;}
  .container{padding:0 16px;}
  .section-head h2{font-size:26px;}
  .article-hero{padding:56px 0 64px;}
  .article-hero h1{font-size:31px;margin:16px 0 20px;}
  .hero-track{display:none;}
  .article-wrap{padding:52px 0 64px;}
  .article-body{padding:32px 22px 30px;border-radius:var(--r-sm);font-size:16px;line-height:1.85;}
  .article-body h2{font-size:23px;margin:34px 0 14px;}
  .article-body h3{font-size:19px;}
  .article-foot{flex-direction:column;align-items:flex-start;}
  .article-foot-actions{width:100%;}
  .article-foot-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .cta-box{padding:36px 24px;border-radius:20px;}
  .cta-copy h2{font-size:23px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .empty-card{padding:48px 22px;}
}
@media (max-width:519px){
  .article-hero h1{font-size:27px;}
  .brand{font-size:17px;}
  .article-meta{font-size:13.5px;gap:12px;}
}

/* roulang page: category1 */
:root{
  --brand:#0B3B2E;
  --brand-deep:#0A1F1A;
  --accent:#18A36B;
  --orange:#FF6B2C;
  --bg:#F4F6F1;
  --ink:#12201C;
  --muted:#5A6B64;
  --line:#D9E2DA;
  --danger:#D64545;
  --r-lg:18px;
  --r-sm:14px;
  --shadow:0 8px 24px rgba(11,59,46,.08);
  --shadow-hover:0 14px 36px rgba(11,59,46,.14);
  --space-lg:96px;
  --space-md:72px;
  --space-sm:52px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  letter-spacing:.01em;
}
img{max-width:100%;display:block;height:auto;border-radius:var(--r-sm);}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--accent);}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3;letter-spacing:.005em;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--orange);outline-offset:3px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
.section{padding:var(--space-lg) 0;}
.section-tight{padding:var(--space-md) 0;}
.section-dark{background:var(--brand-deep);color:#E7F1EC;}
.section-dark h2,.section-dark h3{color:#fff;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;letter-spacing:.08em;color:var(--accent);
  background:rgba(24,163,107,.1);
  border-radius:999px;padding:6px 14px;margin-bottom:18px;
  text-transform:none;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--orange);}
.lead{font-size:17px;color:var(--muted);line-height:1.9;}
.section-head{max-width:820px;margin-bottom:48px;}
.section-head h2{font-size:34px;margin-bottom:16px;}
.section-head p{color:var(--muted);font-size:16.5px;margin:0;}
.section-dark .section-head p{color:#A9C4B9;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(244,246,241,.92);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:82px;gap:24px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:19px;color:var(--brand);letter-spacing:.01em;}
.brand:hover{color:var(--brand);}
.brand-dot{
  width:12px;height:12px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 4px rgba(24,163,107,.16);
  flex:0 0 auto;
}
.main-nav{display:flex;align-items:center;gap:34px;}
.nav-link{
  position:relative;
  font-size:15.5px;color:var(--ink);padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--accent);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .24s 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{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;background:transparent;border:1px solid var(--line);
  border-radius:12px;width:42px;height:42px;color:var(--brand);font-size:17px;
  align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:var(--accent);color:var(--accent);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;padding:14px 28px;font-size:15.5px;font-weight:600;
  border:1px solid transparent;transition:all .22s ease;white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;border-color:var(--brand);}
.btn-primary:hover{background:var(--accent);border-color:var(--accent);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--line);}
.btn-ghost:hover{background:rgba(24,163,107,.08);border-color:var(--accent);color:var(--brand);transform:translateY(-2px);}
.btn-accent{background:var(--orange);color:#fff;border-color:var(--orange);}
.btn-accent:hover{background:#F05515;border-color:#F05515;color:#fff;transform:translateY(-2px);box-shadow:0 14px 36px rgba(255,107,44,.28);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.42);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;transform:translateY(-2px);}
.btn-sm{padding:10px 20px;font-size:14.5px;}

/* ============ Hero ============ */
.cat-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#F7F9F5 0%,#EDF3EE 100%);
  border-bottom:1px solid var(--line);
  padding:78px 0 84px;
}
.cat-hero::before{
  content:"";position:absolute;top:-120px;right:-140px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(24,163,107,.16),rgba(24,163,107,0) 68%);
  pointer-events:none;
}
.cat-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:34px;height:1px;
  background-image:repeating-linear-gradient(90deg,var(--line) 0 14px,transparent 14px 26px);
  opacity:.9;pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:62px;align-items:center;position:relative;z-index:2;}
.cat-hero h1{font-size:48px;line-height:1.24;margin-bottom:20px;}
.cat-hero h1 .mark{color:var(--accent);}
.cat-hero .sub{font-size:17.5px;color:var(--muted);max-width:600px;margin-bottom:32px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:26px;border-top:1px solid var(--line);padding-top:22px;}
.hero-meta div{font-size:14px;color:var(--muted);display:flex;align-items:center;gap:8px;}
.hero-meta i{color:var(--accent);}
.hero-visual{position:relative;}
.hero-visual img{border-radius:var(--r-lg);box-shadow:var(--shadow);border:1px solid var(--line);}
.hero-badge{
  position:absolute;left:-18px;bottom:26px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  padding:14px 18px;box-shadow:var(--shadow);display:flex;align-items:center;gap:12px;
}
.hero-badge .ring{
  width:34px;height:34px;border-radius:50%;flex:0 0 auto;
  border:2px solid var(--accent);display:flex;align-items:center;justify-content:center;
  color:var(--accent);font-size:14px;
}
.hero-badge strong{display:block;font-size:14.5px;color:var(--ink);}
.hero-badge span{font-size:12.5px;color:var(--muted);}

/* ============ 说明区（左文右图） ============ */
.split{display:grid;grid-template-columns:1.02fr .98fr;gap:60px;align-items:center;}
.split h2{font-size:33px;margin-bottom:18px;}
.split p{color:var(--muted);}
.split-img img{border-radius:var(--r-lg);box-shadow:var(--shadow);border:1px solid var(--line);}
.check-list{margin-top:26px;display:grid;gap:14px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.6px;color:var(--ink);}
.check-list i{color:var(--accent);margin-top:6px;font-size:14px;flex:0 0 auto;}

/* ============ 步骤 ============ */
.steps{counter-reset:step;display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:8px;}
.step-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:34px 26px 28px;box-shadow:var(--shadow);transition:all .24s ease;overflow:hidden;
}
.step-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--line);
  transition:background .24s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--accent);}
.step-card:hover::before{background:var(--accent);}
.step-num{
  width:42px;height:42px;border-radius:12px;background:rgba(24,163,107,.1);color:var(--accent);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;margin-bottom:18px;
}
.step-card h3{font-size:19px;margin-bottom:10px;}
.step-card p{font-size:15px;color:var(--muted);margin:0;}

/* ============ 对照卡 ============ */
.msg-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.msg-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:30px;box-shadow:var(--shadow);transition:all .24s ease;position:relative;
}
.msg-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px);border-color:var(--accent);}
.tag{
  display:inline-block;font-size:13px;padding:4px 12px;border-radius:999px;
  background:rgba(11,59,46,.07);color:var(--brand);margin-bottom:14px;font-weight:600;
}
.tag-warn{background:rgba(255,107,44,.12);color:#C8480F;}
.msg-card h3{font-size:19px;margin-bottom:12px;}
.msg-card p{font-size:15px;color:var(--muted);margin-bottom:12px;}
.msg-card .fix{font-size:15px;color:var(--ink);border-top:1px dashed var(--line);padding-top:14px;margin:0;}
.msg-card .fix i{color:var(--accent);margin-right:8px;}

/* ============ 场景条 ============ */
.scene-row{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px;}
.scene{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  padding:26px;box-shadow:var(--shadow);transition:all .24s ease;
}
.scene:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--accent);}
.scene i{font-size:20px;color:var(--orange);margin-bottom:14px;display:block;}
.scene h3{font-size:17.5px;margin-bottom:8px;}
.scene p{font-size:14.8px;color:var(--muted);margin:0;}

/* ============ 配图带 ============ */
.visual-band{
  display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:stretch;margin-top:8px;
}
.visual-band figure{margin:0;position:relative;overflow:hidden;border-radius:var(--r-lg);border:1px solid var(--line);box-shadow:var(--shadow);}
.visual-band img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.visual-note{
  background:var(--brand);color:#DCEBE4;border-radius:var(--r-lg);padding:38px 34px;
  display:flex;flex-direction:column;justify-content:center;
}
.visual-note h3{color:#fff;font-size:22px;margin-bottom:14px;}
.visual-note p{font-size:15.4px;color:#B9D2C8;margin-bottom:20px;}
.visual-note ul{display:grid;gap:12px;}
.visual-note li{display:flex;gap:10px;font-size:15px;color:#E4F2EB;}
.visual-note li i{color:var(--accent);margin-top:6px;font-size:13px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:24px 44px 24px 0;position:relative;
  font-size:17.5px;font-weight:600;color:var(--ink);transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--accent);transition:transform .26s ease;
}
.faq-item[open] summary{color:var(--brand);}
.faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg);}
.faq-item summary:hover{color:var(--accent);}
.faq-body{padding:0 44px 26px 0;color:var(--muted);font-size:15.6px;line-height:1.85;}
.faq-body p{margin:0;}

/* ============ CTA ============ */
.cta-band{
  background:var(--brand-deep);
  background-image:radial-gradient(circle at 88% 18%,rgba(24,163,107,.28),rgba(24,163,107,0) 58%);
  color:#fff;border-radius:24px;padding:64px 56px;
}
.cta-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:40px;align-items:center;}
.cta-band h2{color:#fff;font-size:34px;margin-bottom:16px;}
.cta-band p{color:#A9C4B9;font-size:16.4px;margin:0;}
.cta-actions{display:flex;flex-direction:column;gap:14px;}
.cta-actions .btn{width:100%;}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-deep);color:#B9D2C8;margin-top:var(--space-lg);padding-top:72px;font-size:15px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.12);}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:18px;margin-bottom:16px;}
.footer-col p{color:#9FBBAF;font-size:14.6px;line-height:1.8;margin:0;}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:18px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col ul li{font-size:14.6px;color:#9FBBAF;}
.footer-col ul a{color:#C9DED5;}
.footer-col ul a:hover{color:var(--accent);}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:26px 0 34px;font-size:13.6px;color:#7E9B8F;}

/* ============ 面包屑 ============ */
.crumb{font-size:13.6px;color:var(--muted);padding:20px 0 0;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--accent);}
.crumb span.sep{margin:0 8px;color:#AFC0B8;}
.crumb .current{color:var(--accent);font-weight:600;}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--space-lg:74px;--space-md:60px;--space-sm:46px;}
  .cat-hero h1{font-size:39px;}
  .hero-grid{grid-template-columns:1fr;gap:42px;}
  .split{grid-template-columns:1fr;gap:38px;}
  .split.reverse .split-img{order:-1;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .scene-row{grid-template-columns:1fr;}
  .visual-band{grid-template-columns:1fr;}
  .cta-grid{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .section-head h2,.split h2{font-size:29px;}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:fixed;inset:0;z-index:90;
    background:#F7F9F5;
    flex-direction:column;align-items:flex-start;justify-content:center;
    gap:26px;padding:88px 32px;
    transform:translateX(100%);transition:transform .28s ease;
  }
  .main-nav.is-open{transform:translateX(0);}
  .main-nav .nav-link{font-size:23px;}
  .main-nav .nav-link::after{height:3px;bottom:-4px;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .cat-hero{padding:52px 0 60px;}
  .cat-hero h1{font-size:31px;}
  .cat-hero .sub{font-size:16px;}
  .hero-cta .btn{width:100%;}
  .hero-meta{gap:16px;flex-direction:column;}
  .steps,.msg-grid{grid-template-columns:1fr;}
  .cta-band{padding:42px 26px;border-radius:20px;}
  .cta-band h2{font-size:26px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .hero-badge{position:static;margin-top:16px;left:auto;bottom:auto;}
  .section-head h2,.split h2{font-size:25px;}
  .faq-item summary{font-size:16.4px;padding-right:36px;}
  .faq-body{padding-right:8px;}
  .header-actions .btn-sm{display:none;}
}
@media (max-width:520px){
  .cat-hero h1{font-size:28px;}
  .brand{font-size:17px;}
  .step-card,.msg-card,.scene{padding:24px 20px;}
}

/* roulang page: category2 */
:root{
  --deep:#0B3B2E;
  --deep-2:#0A1F1A;
  --mint:#18A36B;
  --mint-soft:#E4F3EC;
  --orange:#FF6B2C;
  --bg:#F4F6F1;
  --white:#FFFFFF;
  --ink:#12201C;
  --ink-2:#5A6B64;
  --line:#D9E2DA;
  --danger:#D64545;
  --r-lg:18px;
  --r-sm:14px;
  --r-pill:999px;
  --sh:0 8px 24px rgba(11,59,46,.08);
  --sh-hover:0 14px 36px rgba(11,59,46,.14);
  --sp-section:96px;
  --sp-section-md:68px;
  --sp-section-sm:52px;
}
*,*::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","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-sm);}
a{color:var(--deep);text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
a:hover{color:var(--mint);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.35;letter-spacing:.2px;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--orange);outline-offset:3px;border-radius:4px;}

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

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  min-height:80px;gap:24px;
}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:19px;color:var(--deep);letter-spacing:.4px;}
.brand:hover{color:var(--deep);}
.brand-text{white-space:nowrap;}
.brand-dot{
  width:10px;height:10px;border-radius:50%;
  background:linear-gradient(135deg,var(--mint),var(--orange));
  flex:0 0 auto;
}
.main-nav{display:flex;align-items:center;gap:30px;}
.nav-link{
  position:relative;font-size:15px;color:var(--ink-2);padding:6px 2px;font-weight:500;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--mint);transform:scaleX(0);transform-origin:left;transition:transform .24s ease;
}
.nav-link:hover{color:var(--deep);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--deep);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:var(--white);color:var(--deep);font-size:17px;cursor:pointer;
  align-items:center;justify-content:center;transition:background-color .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:var(--mint-soft);border-color:var(--mint);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  border:1px solid transparent;transition:all .22s ease;white-space:nowrap;
}
.btn-primary{background:var(--deep);color:#fff;box-shadow:var(--sh);}
.btn-primary:hover{background:var(--mint);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-hover);}
.btn-ghost{background:transparent;color:var(--deep);border-color:var(--line);}
.btn-ghost:hover{background:var(--mint-soft);border-color:var(--mint);color:var(--deep);transform:translateY(-2px);}
.btn-light{background:#fff;color:var(--deep);}
.btn-light:hover{background:var(--orange);color:#fff;transform:translateY(-2px);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.42);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;transform:translateY(-2px);}
.btn-sm{padding:9px 18px;font-size:14px;}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:var(--mint-soft);color:var(--deep);
  font-size:13px;font-weight:600;letter-spacing:.3px;
}
.badge-orange{background:#FFEDE4;color:#B4430F;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    linear-gradient(180deg,rgba(244,246,241,.55) 0%,rgba(244,246,241,1) 78%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  padding:84px 0 var(--sp-section);
  border-bottom:1px solid var(--line);
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero-eyebrow{margin-bottom:18px;}
.hero h1{font-size:48px;line-height:1.28;margin-bottom:20px;}
.hero h1 .accent{color:var(--mint);}
.hero-sub{font-size:17px;color:var(--ink-2);max-width:600px;margin-bottom:30px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-points{display:flex;flex-wrap:wrap;gap:12px 26px;font-size:14px;color:var(--ink-2);}
.hero-points li{display:flex;align-items:center;gap:8px;}
.hero-points i{color:var(--mint);font-size:13px;}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;border-radius:var(--r-lg);box-shadow:var(--sh);
  border:1px solid var(--line);aspect-ratio:4/3;object-fit:cover;
}
.hero-chip{
  position:absolute;left:-14px;bottom:-18px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  box-shadow:var(--sh);padding:14px 18px;display:flex;align-items:center;gap:12px;
  font-size:14px;color:var(--ink-2);
}
.hero-chip strong{display:block;color:var(--deep);font-size:15px;}
.hero-chip .pulse{
  width:12px;height:12px;border-radius:50%;background:var(--mint);
  box-shadow:0 0 0 6px rgba(24,163,107,.16);
}

/* ---------- Sections ---------- */
.section{padding:var(--sp-section) 0;}
.section-tight{padding:var(--sp-section-md) 0;}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{font-size:34px;margin-bottom:16px;}
.section-head p{color:var(--ink-2);margin:0;font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:700;letter-spacing:2px;color:var(--mint);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--mint);display:inline-block;}

/* ---------- Dual cards ---------- */
.dual-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;}
.info-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:38px 34px 34px;box-shadow:var(--sh);transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
  overflow:hidden;
}
.info-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--mint);}
.info-card.is-alt::before{background:var(--orange);}
.info-card:hover{box-shadow:var(--sh-hover);transform:translateY(-4px);border-color:var(--mint);}
.info-card h3{font-size:23px;margin-bottom:12px;}
.info-card .lead{color:var(--ink-2);font-size:15px;margin-bottom:22px;}
.check-list li{
  display:flex;gap:12px;padding:13px 0;border-top:1px solid var(--line);
  font-size:15px;color:var(--ink);
}
.check-list li:first-child{border-top:none;}
.check-list i{color:var(--mint);margin-top:7px;font-size:13px;flex:0 0 auto;}
.info-card.is-alt .check-list i{color:var(--orange);}
.check-list span small{display:block;color:var(--ink-2);font-size:14px;line-height:1.7;}

/* ---------- Compare table ---------- */
.compare-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh);overflow:hidden;
}
.compare-scroll{overflow-x:auto;}
table.compare{width:100%;border-collapse:collapse;min-width:720px;}
table.compare th,table.compare td{
  padding:20px 24px;text-align:left;font-size:15px;vertical-align:top;
  border-bottom:1px solid var(--line);
}
table.compare thead th{
  background:var(--deep);color:#fff;font-size:14px;font-weight:600;letter-spacing:.6px;
  border-bottom:none;white-space:nowrap;
}
table.compare tbody tr:last-child td{border-bottom:none;}
table.compare tbody tr:hover{background:#FAFCF9;}
table.compare td:first-child{font-weight:600;color:var(--deep);width:22%;}
.ok-text{color:var(--mint);font-weight:600;}
.warn-text{color:var(--danger);font-weight:600;}
table.compare td span.tagline{display:block;color:var(--ink-2);font-weight:400;font-size:14px;margin-top:4px;}

/* ---------- Timeline ---------- */
.timeline{padding:8px 0 0;}
.timeline-track{
  position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:22px;
}
.timeline-track::before{
  content:"";position:absolute;top:22px;left:6%;right:6%;height:2px;
  background:repeating-linear-gradient(90deg,var(--line) 0 10px,transparent 10px 20px);
}
.tl-item{position:relative;padding-top:56px;}
.tl-dot{
  position:absolute;top:8px;left:50%;transform:translateX(-50%);
  width:30px;height:30px;border-radius:50%;background:#fff;border:2px solid var(--mint);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;color:var(--deep);z-index:2;
}
.tl-item h4{font-size:17px;text-align:center;margin-bottom:8px;}
.tl-item p{font-size:14px;color:var(--ink-2);text-align:center;margin:0;}

/* ---------- Scene grid ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.scene-card{
  display:flex;gap:20px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-sm);padding:26px;box-shadow:var(--sh);
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.scene-card:hover{box-shadow:var(--sh-hover);transform:translateY(-3px);border-color:var(--mint);}
.scene-icon{
  flex:0 0 auto;width:48px;height:48px;border-radius:14px;
  background:var(--mint-soft);color:var(--deep);
  display:flex;align-items:center;justify-content:center;font-size:18px;
}
.scene-card h4{font-size:18px;margin-bottom:6px;}
.scene-card p{font-size:14.5px;color:var(--ink-2);margin:0;}

/* ---------- Feature banner ---------- */
.security-banner{
  background:var(--deep);color:#fff;border-radius:var(--r-lg);
  padding:52px 48px;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;
  position:relative;overflow:hidden;
}
.security-banner::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(24,163,107,.35),transparent 68%);
}
.security-banner h3{color:#fff;font-size:26px;margin-bottom:14px;}
.security-banner p{color:rgba(255,255,255,.78);margin:0;font-size:15.5px;}
.banner-stats{display:grid;grid-template-columns:1fr 1fr;gap:18px;position:relative;z-index:2;}
.stat-box{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-sm);padding:20px 22px;
}
.stat-box strong{display:block;font-size:28px;color:#fff;line-height:1.2;margin-bottom:6px;}
.stat-box span{font-size:13.5px;color:rgba(255,255,255,.72);}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:20px;padding:24px 4px;font-size:17px;font-weight:600;color:var(--ink);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--mint);}
.faq-item .mark{
  flex:0 0 auto;width:30px;height:30px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--deep);
  transition:transform .25s ease,background-color .25s ease,color .25s ease,border-color .25s ease;
  font-size:13px;
}
.faq-item[open] .mark{transform:rotate(45deg);background:var(--deep);color:#fff;border-color:var(--deep);}
.faq-body{padding:0 4px 26px;max-width:860px;color:var(--ink-2);font-size:15.5px;}
.faq-body p:last-child{margin-bottom:0;}

/* ---------- CTA ---------- */
.cta-section{
  background:var(--deep-2);color:#fff;padding:var(--sp-section) 0;
  position:relative;overflow:hidden;
}
.cta-section::before{
  content:"";position:absolute;left:-120px;bottom:-140px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,107,44,.24),transparent 70%);
}
.cta-inner{position:relative;z-index:2;text-align:center;max-width:820px;margin:0 auto;}
.cta-inner h2{color:#fff;font-size:36px;margin-bottom:18px;}
.cta-inner p{color:rgba(255,255,255,.76);font-size:16.5px;margin-bottom:32px;}
.cta-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;}
.cta-note{margin-top:26px;font-size:13.5px;color:rgba(255,255,255,.55);}

/* ---------- Footer ---------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.78);padding:72px 0 30px;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.14);
}
.footer-brand{
  display:flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:700;margin-bottom:16px;
}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;letter-spacing:.6px;}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);margin:0;}
.footer-col ul li{font-size:14px;padding:7px 0;color:rgba(255,255,255,.72);}
.footer-col ul li a{color:rgba(255,255,255,.72);}
.footer-col ul li a:hover{color:var(--orange);}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:24px;font-size:13.5px;color:rgba(255,255,255,.55);
}

/* ---------- Mobile drawer ---------- */
.drawer{
  position:fixed;inset:0;background:#fff;z-index:90;
  padding:28px 24px;display:flex;flex-direction:column;gap:8px;
  transform:translateY(-102%);transition:transform .32s ease;visibility:hidden;
}
body.nav-open .drawer{transform:translateY(0);visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-head .brand{font-size:18px;}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;
  color:var(--deep);font-size:18px;cursor:pointer;
}
.drawer a.drawer-link{
  font-size:20px;font-weight:600;color:var(--ink);padding:16px 0;
  border-bottom:1px solid var(--line);
}
.drawer a.drawer-link.is-active{color:var(--mint);}
.drawer .btn{margin-top:26px;width:100%;}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .hero h1{font-size:40px;}
  .hero-grid{gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .timeline-track{grid-template-columns:repeat(3,1fr);}
  .timeline-track::before{display:none;}
  .security-banner{grid-template-columns:1fr;padding:44px 34px;}
}
@media (max-width:900px){
  :root{--sp-section:var(--sp-section-md);}
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn{display:none;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-figure{order:-1;}
  .hero-chip{left:14px;bottom:-16px;}
  .dual-grid,.scene-grid{grid-template-columns:1fr;}
  .section-head h2{font-size:28px;}
}
@media (max-width:520px){
  :root{--sp-section:var(--sp-section-sm);}
  .container{padding:0 16px;}
  .hero{padding:56px 0 52px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:15.5px;}
  .hero-cta .btn{width:100%;}
  .section-head h2{font-size:25px;}
  .cta-inner h2{font-size:27px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .timeline-track{grid-template-columns:1fr;gap:8px;}
  .tl-item{padding-top:0;padding-left:52px;text-align:left;padding-bottom:26px;}
  .tl-dot{left:0;top:4px;transform:none;}
  .tl-item h4,.tl-item p{text-align:left;}
  .banner-stats{grid-template-columns:1fr;}
  .info-card{padding:30px 22px;}
  .scene-card{padding:22px;}
  .security-banner{padding:34px 22px;}
}