/* roulang page: index */
:root{
  --primary:#F6481F;
  --primary-dark:#D93A16;
  --accent:#1DBFAE;
  --bg:#F7F8F8;
  --white:#FFFFFF;
  --ink:#15181C;
  --sub:#5B6068;
  --line:#E9EBEE;
  --dark:#0D1014;
  --dark-2:#12161C;
  --radius:12px;
  --radius-sm:8px;
  --shadow:0 6px 18px rgba(0,0,0,0.04);
  --shadow-hover:0 14px 28px rgba(0,0,0,0.08);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);background:var(--bg);color:var(--ink);line-height:1.75;font-size:16px}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px}
.container{width:min(1280px,calc(100% - 40px));margin-inline:auto}
.section{padding-block:88px}
.section-lite{background:var(--white)}
.section-shade{background:#EFF1F3}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 28px;border-radius:var(--radius-sm);
  font-weight:700;font-size:15px;line-height:1;transition:background .2s ease,transform .15s ease,box-shadow .2s ease,border-color .2s ease;
  text-align:center;white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(246,72,31,.24)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(217,58,22,.28)}
.btn-ghost-light{border:1px solid rgba(255,255,255,.6);color:#fff;background:transparent}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-ghost{border:1px solid var(--line);color:var(--ink);background:var(--white)}
.btn-ghost:hover{background:#F1F3F5;border-color:#DDE2E6}
.text-link{display:inline-flex;align-items:center;gap:4px;color:var(--ink);font-weight:700;font-size:14px;border-bottom:1px solid transparent;transition:color .2s,border-color .2s}
.text-link:hover{color:var(--primary);border-color:rgba(246,72,31,.45)}
.tag{align-items:center;background:#F2EFEC;border-radius:999px;color:var(--sub);display:inline-flex;font-size:12px;font-weight:700;line-height:1;padding:6px 12px;white-space:nowrap}
.tag-accent{background:rgba(29,191,174,.12);color:#149A8D}
/* 头部导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.86);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
}
.nav-shell{
  width:min(1440px,100% - 32px);margin-inline:auto;
  display:flex;align-items:center;height:76px;gap:28px;
}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:10px;background:var(--primary);
  color:#fff;display:inline-flex;align-items:center;justify-content:center;font-weight:900;font-size:20px;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.3),0 6px 12px rgba(246,72,31,.3);
  transform:skew(-6deg);
}
.brand-mark span{transform:skew(6deg)}
.brand-name{font-size:21px;font-weight:900;letter-spacing:1px;line-height:1.1}
.brand-name small{display:block;font-size:10px;color:var(--sub);font-weight:600;letter-spacing:1.5px}
.nav-menu{display:flex;align-items:center;gap:6px;margin-inline:auto}
.nav-link{
  padding:10px 16px;border-radius:8px;font-weight:700;font-size:15px;color:var(--sub);
  position:relative;transition:color .2s,background .2s;line-height:1.2;
}
.nav-link:hover{background:#F3F5F7;color:var(--ink)}
.nav-link.active{color:var(--ink)}
.nav-link.active::after{content:"";position:absolute;left:16px;right:16px;bottom:4px;height:2px;background:var(--primary);border-radius:2px}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.search-box{display:flex;align-items:center;position:relative}
.search-box input{
  width:230px;height:40px;border:1px solid var(--line);background:#F6F7F8;border-radius:999px;
  padding:0 42px 0 16px;font-size:14px;transition:border-color .2s,background .2s,box-shadow .2s;color:var(--ink);
}
.search-box input::placeholder{color:#A4AAB1}
.search-box input:focus{outline:none;border-color:var(--primary);background:var(--white);box-shadow:0 0 0 4px rgba(246,72,31,.10)}
.search-box .search-btn{
  position:absolute;right:6px;top:50%;transform:translateY(-50%);
  width:30px;height:30px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;color:var(--sub);transition:background .2s,color .2s;
}
.search-box .search-btn:hover{background:#EFF1F3;color:var(--primary)}
.login{border:none;background:transparent;padding:8px 10px;color:var(--sub);font-weight:700;font-size:15px;transition:color .2s;border-radius:8px}
.login:hover{color:var(--ink)}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 22px;background:var(--primary);color:#fff;border-radius:8px;
  font-size:14px;font-weight:700;transition:background .2s,box-shadow .2s,transform .15s;
}
.nav-cta:hover{background:var(--primary-dark);box-shadow:0 8px 18px rgba(246,72,31,.3)}
.nav-cta:active{transform:translateY(1px)}
.menu-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;align-items:center;justify-content:center;flex-shrink:0}
.mobile-panel{display:none;position:fixed;top:76px;left:0;right:0;bottom:0;background:var(--white);z-index:99;padding:18px 20px 40px;overflow-y:auto;border-top:1px solid var(--line)}
.mobile-panel.open{display:block}
.mobile-panel .nav-mobile-list{display:flex;flex-direction:column}
.mobile-panel .nav-mobile-link{display:flex;align-items:center;min-height:52px;font-size:18px;font-weight:700;padding:0 12px;border-radius:10px;color:var(--ink);border-bottom:1px solid var(--line)}
.mobile-panel .nav-mobile-link:hover{background:#F3F4F6}
.mobile-panel .nav-mobile-link.active{color:var(--primary)}
/* Hero */
.hero{position:relative;background:var(--dark);min-height:88vh;display:flex;align-items:flex-end;overflow:hidden;padding-top:130px}
.hero::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:url('/assets/images/backpic/back-1.png') no-repeat 72% center/cover;
  opacity:.16;
}
.hero::after{
  content:"";position:absolute;left:0;top:0;width:34%;height:100%;background:linear-gradient(180deg,transparent,rgba(13,16,20,.88));
  z-index:2;pointer-events:none;
}
.hero-inner{position:relative;z-index:3;padding-block:100px 130px}
.hero-grid{display:grid;grid-template-columns:1.05fr .92fr;gap:60px;align-items:center}
.hero-eyebrow{display:inline-flex;align-items:center;gap:10px;margin-bottom:20px;color:#F7F8F5}
.hero-eyebrow .eyebrow-dot{width:8px;height:8px;background:var(--accent);border-radius:50%}
.hero h1{
  color:#fff;font-size:clamp(42px,7vw,74px);line-height:1.12;font-weight:900;letter-spacing:-1px;
  margin-bottom:20px;
}
.hero h1 .hero-amp{color:var(--primary)}
.hero-lead{
  color:rgba(255,255,255,.74);font-size:18px;line-height:1.85;max-width:520px;margin-bottom:30px;
}
.hero-ctas{display:flex;flex-wrap:wrap;gap:14px}
.hero-note{display:flex;align-items:center;gap:10px;color:rgba(255,255,255,.46);font-size:13px;margin-top:34px;line-height:1.6}
.hero-note::before{content:"";width:26px;height:1px;background:var(--accent)}
.hero-visual{position:relative;width:100%}
.hero-frame{
  background:var(--dark-2);border:1px solid rgba(255,255,255,.12);border-radius:20px;padding:12px;
  transform:rotate(1.2deg);box-shadow:0 30px 60px rgba(0,0,0,.35);
}
.hero-frame img{border-radius:12px;width:100%;height:300px;object-fit:cover}
.hero-visual-caption{
  display:flex;justify-content:space-between;align-items:center;gap:14px;
  margin-top:14px;padding:0 8px;color:rgba(255,255,255,.6);font-size:13px;
}
.hero-live{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-weight:800;font-size:12px;letter-spacing:.8px}
.hero-live::before{content:"";width:8px;height:8px;background:var(--accent);border-radius:50%;box-shadow:0 0 0 0 rgba(29,191,174,.6);animation:pulse 1.8s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(29,191,174,.5)}70%{box-shadow:0 0 0 10px rgba(29,191,174,0)}100%{box-shadow:0 0 0 0 rgba(29,191,174,0)}}
/* 指标看板 */
.metrics{position:relative;z-index:5;margin-top:-74px;padding-bottom:0}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.metric-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 26px 22px;box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease;
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.metric-label{display:flex;align-items:center;justify-content:space-between;color:var(--sub);font-size:13px;font-weight:600;margin-bottom:6px}
.metric-label i{font-style:normal;width:8px;height:8px;border-radius:2px;background:rgba(29,191,174,.25)}
.metric-label i.muted{background:rgba(91,96,104,.18)}
.metric-value{font-size:42px;font-weight:900;letter-spacing:-1.5px;font-variant-numeric:tabular-nums;line-height:1.15}
.metric-value small{font-size:15px;font-weight:700;color:var(--sub);margin-left:6px}
.metric-meta{margin-top:12px;color:var(--sub);font-size:13px}
.metric-flow{margin-top:14px;height:5px;border-radius:99px;background:#EDEEF0;overflow:hidden}
.metric-flow span{display:block;height:100%;background:var(--primary);border-radius:99px;width:82%}
.metric-flow.center span{width:65%;background:var(--accent)}
.metric-flow.grow span{width:93%}
.metrics-note{color:var(--sub);font-size:12px;text-align:right;margin-top:14px}
.metrics-note b{color:var(--ink)}
/* 服务矩阵 */
.service-zone .section-head{max-width:820px;margin-bottom:58px}
.section-eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-weight:800;font-size:13px;letter-spacing:2px;text-transform:uppercase}
.section-eyebrow span{color:var(--sub);font-weight:600;font-size:12px}
.section-head h2{font-size:clamp(30px,5vw,46px);line-height:1.22;margin-top:14px;font-weight:900;letter-spacing:-.5px}
.section-head p{margin-top:18px;color:var(--sub);font-size:17px;max-width:760px}
.service-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.service-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;position:relative;
  transition:box-shadow .25s ease,transform .25s ease;
}
.service-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.service-card::after{content:"";position:absolute;right:-80px;top:-80px;width:160px;height:160px;border-radius:50%;background:rgba(246,72,31,.04);transition:transform .2s}
.service-card:hover::after{transform:scale(1.2)}
.service-media{position:relative;height:200px;overflow:hidden;background:#E8ECEE;border-bottom:1px solid var(--line)}
.service-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.service-card:hover .service-media img{transform:scale(1.04)}
.service-media .service-index{
  position:absolute;left:18px;bottom:10px;z-index:2;font-size:52px;font-weight:900;color:#fff;letter-spacing:-2px;
  text-shadow:0 4px 18px rgba(0,0,0,.32);line-height:1
}
.service-index span{color:rgba(255,255,255,.62);font-size:24px;font-weight:800}
.service-body{padding:28px 30px 26px;flex:1;display:flex;flex-direction:column}
.service-body h3{font-size:22px;font-weight:800;margin-bottom:14px;letter-spacing:-.2px}
.service-body p{color:var(--sub);font-size:15px;line-height:1.85;margin-bottom:20px;flex:1}
.service-body .text-link{color:var(--primary)}
.service-body .text-link:hover{color:var(--primary-dark)}
/* 结果对比 */
.contrast-section{background:#F1F3F5;position:relative}
.contrast-section::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary) 0%,transparent 60%)}
.contrast-grid{display:grid;grid-template-columns:1fr .9fr;gap:48px}
.contrast-header{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:44px}
.section-title-row{max-width:600px}
.section-title-row h2{font-size:clamp(28px,4.5vw,42px);line-height:1.25;font-weight:900;letter-spacing:-.5px}
.section-title-row p{margin-top:14px;color:var(--sub)}
.contrast-note{display:inline-flex;align-items:center;gap:8px;background:rgba(29,191,174,.1);color:#159D8B;font-size:13px;font-weight:700;padding:8px 14px;border-radius:999px}
.compare-block{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.compare-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;box-shadow:var(--shadow)}
.compare-card.dark{background:var(--dark);border-color:var(--dark)}
.compare-card h3{font-size:17px;font-weight:800;margin-bottom:18px;display:flex;align-items:center;gap:9px}
.compare-card.calm h3::before{content:"";width:4px;height:16px;background:#C6CBD0;border-radius:2px}
.compare-card.dark h3{color:#F4F7F9}
.compare-card.dark h3::before{content:"";width:4px;height:16px;background:var(--primary);border-radius:2px}
.compare-card ul{display:flex;flex-direction:column;gap:14px}
.compare-card li{display:flex;gap:10px;font-size:14px;color:var(--sub);line-height:1.7}
.compare-card li::before{content:"";flex-shrink:0;width:7px;height:7px;border-radius:2px;background:#D3D8DC;margin-top:8px}
.compare-card.dark li{color:rgba(255,255,255,.66)}
.compare-card.dark li::before{background:var(--primary)}
.metric-panel{margin-top:20px;background:var(--white);border-radius:var(--radius);border:1px solid var(--line);padding:26px;box-shadow:var(--shadow)}
.metric-panel-head{display:flex;gap:12px;align-items:center;justify-content:space-between;padding-bottom:10px}
.metric-panel-title{font-size:18px;font-weight:800}
.metric-panel .hint{font-size:12px;color:#A3A9B0}
.metric-panel-body{display:flex;flex-direction:column;gap:26px;margin-top:22px}
.metric-row{display:grid;grid-template-columns:130px 1fr auto;gap:18px;align-items:center}
.metric-name{color:var(--sub);font-size:14px;line-height:1.5}
.metric-name b{color:var(--ink);display:block;font-weight:700}
.metric-bar{background:#EDEFF0;height:10px;border-radius:8px;overflow:hidden;position:relative;max-width:420px}
.metric-bar span{position:absolute;left:0;top:0;bottom:0;background:var(--primary);border-radius:8px;width:0}
.metric-bar span.cold{background:var(--accent)}
.metric-val{font-size:14px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--ink)}
.metric-legend{display:flex;gap:20px;margin-top:24px;padding-top:20px;border-top:1px solid var(--line);color:var(--sub);font-size:13px}
.metric-legend i{width:8px;height:8px;background:var(--primary);border-radius:3px;display:inline-block;margin-right:6px}
.metric-legend i.green{background:var(--accent)}
/* 最新动态 */
.news-section{background:var(--white)}
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:42px}
.dynamic-list{border-top:1px solid var(--line)}
.news-row{display:block;border-bottom:1px solid var(--line);transition:background .2s ease}
.news-row:hover{background:#FBFAF9}
.news-row-link{display:flex;align-items:center;gap:24px;padding:24px 12px}
.news-visual{
  width:76px;height:76px;border-radius:12px;background:var(--dark);flex-shrink:0;display:flex;align-items:center;justify-content:center;
  position:relative;overflow:hidden;
}
.news-visual::before{content:"";width:34px;height:34px;background:rgba(246,72,31,.3);transform:rotate(45deg);position:absolute}
.news-visual::after{content:"";width:10px;height:10px;background:var(--accent);position:relative}
.news-content{min-width:0;flex:1}
.news-meta{display:flex;align-items:center;gap:10px;color:var(--sub);font-size:13px;margin-bottom:8px;flex-wrap:wrap}
.news-meta .dot{width:3px;height:3px;border-radius:50%;background:#A5AAAF}
.news-cat{color:var(--primary);font-weight:800}
.news-content h3{font-size:18px;font-weight:800;line-height:1.5;margin-bottom:8px;transition:color .2s;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.news-row:hover .news-content h3{color:var(--primary)}
.news-summary{color:var(--sub);font-size:14px;line-height:1.7;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical}
.news-empty{border:1px dashed #D7DBDF;border-radius:var(--radius);background:#FAFAFA;padding:60px 18px;text-align:center;color:var(--sub);font-weight:600;line-height:1.6}
/* FAQ */
.faq-section{background:var(--dark);color:#E8ECEF}
.faq-section .section-eyebrow{color:var(--primary)}
.faq-inner{display:grid;grid-template-columns:0.9fr 1.1fr;gap:80px}
.faq-copy h2{font-size:clamp(30px,5vw,46px);line-height:1.25;color:#fff;font-weight:900;margin-top:16px}
.faq-copy p{margin-top:20px;color:rgba(255,255,255,.6);line-height:2}
.faq-contact{margin-top:40px;border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.04);border-radius:14px;padding:20px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.faq-contact strong{font-size:17px;display:block;color:#fff}
.faq-contact span{font-size:14px;color:rgba(255,255,255,.56)}
.faq-contact .btn{min-height:44px;padding:0 20px;font-size:14px}
.faq-list details{border-bottom:1px solid rgba(255,255,255,.12)}
.faq-list details summary{
  display:flex;justify-content:space-between;align-items:center;gap:20px;cursor:pointer;list-style:none;
  padding:24px 4px;color:#F1F5F8;font-weight:700;font-size:17px;transition:color .2s;
}
.faq-list details summary::-webkit-details-marker{display:none}
.faq-list details summary:hover{color:var(--primary)}
.faq-list .faq-q-icon{flex-shrink:0;width:24px;height:24px;border-radius:50%;border:1px solid rgba(246,72,31,.4);display:inline-flex;align-items:center;justify-content:center;font-size:20px;font-weight:400;color:var(--primary);transition:transform .25s,border-color .25s;line-height:1}
.faq-list details[open] .faq-q-icon{transform:rotate(45deg);border-color:var(--primary);background:rgba(246,72,31,.12)}
.faq-list details .faq-a{margin:0 4px 26px;padding-right:26px;color:rgba(255,255,255,.66);line-height:1.9;font-size:15px}
/* 转化表单 */
.cta-section{background:linear-gradient(to right,#0D1014,#14191F);position:relative;overflow:hidden;color:#fff}
.cta-section::after{content:"";position:absolute;right:-160px;top:-120px;width:360px;height:360px;background:radial-gradient(circle,rgba(246,72,31,.26),transparent 68%)}
.cta-grid{display:grid;grid-template-columns:1fr .9fr;gap:72px;z-index:1;position:relative;}
.cta-left h2{font-size:clamp(30px,5vw,46px);line-height:1.25;font-weight:900;color:#fff}
.cta-left>p{margin-top:20px;color:rgba(255,255,255,.68);font-size:16px;line-height:1.9;max-width:500px}
.cta-list{margin-top:34px;display:flex;flex-direction:column;gap:18px}
.cta-list li{display:flex;gap:12px;align-items:flex-start;color:rgba(255,255,255,.76);line-height:1.7;font-size:15px}
.cta-list li::before{content:"";width:10px;height:10px;background:var(--accent);flex-shrink:0;margin-top:9px;border-radius:3px}
.cta-contact-block{margin-top:44px;border-top:1px solid rgba(255,255,255,.1);padding-top:26px;display:flex;flex-wrap:wrap;gap:42px}
.cta-contact-item span{display:block;font-size:13px;color:rgba(255,255,255,.46);margin-bottom:6px}
.cta-contact-item strong{font-size:17px;font-weight:800}
.form-card{background:var(--white);color:var(--ink);border-radius:18px;box-shadow:0 20px 50px rgba(0,0,0,.2);padding:34px}
.form-card h3{font-size:22px;font-weight:800;margin-bottom:8px}
.form-card .form-sub{color:var(--sub);font-size:14px;margin-bottom:26px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-group.full{grid-column:1/-1}
.form-group label{font-size:14px;font-weight:700;color:#454B53}
.form-group input,.form-group select,.form-group textarea{
  border:1px solid var(--line);background:#F9FAF9;border-radius:8px;height:48px;padding:0 14px;
  font-size:15px;color:var(--ink);transition:border-color .2s,background .2s,box-shadow .2s;
}
.form-group textarea{height:110px;padding:13px 14px;resize:vertical;line-height:1.7}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;background:var(--white);border-color:var(--primary);box-shadow:0 0 0 4px rgba(246,72,31,.09)}
.form-submit{margin-top:20px;width:100%}
.form-success{display:none;margin-top:18px;background:#E6F6F3;border:1px solid #B8E8DF;color:#127E6B;padding:13px 16px;border-radius:8px;font-weight:700;text-align:center}
/* 页脚 */
.site-footer{background:#070A0D;color:#C9CDD3;padding:80px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.8fr 1fr 1fr 1.3fr;gap:56px;padding-bottom:56px}
.footer-brand .brand{transform:none;margin-bottom:18px}
.footer-brand .brand-name{color:#fff}
.footer-brand .brand-name small{color:rgba(255,255,255,.42)}
.footer-brand-text{max-width:300px;color:rgba(255,255,255,.55);line-height:1.9;margin-top:4px}
.footer-col h4{color:#fff;font-size:15px;font-weight:800;margin-bottom:22px;letter-spacing:.5px}
.footer-col .footer-links{display:flex;flex-direction:column;gap:12px}
.footer-col .footer-links a{color:rgba(255,255,255,.58);transition:color .2s;display:inline-flex;align-items:center;gap:6px}
.footer-col .footer-links a:hover{color:var(--primary)}
.footer-col .footer-links a::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--primary);opacity:0;transition:opacity .2s}
.footer-col .footer-links a:hover::before{opacity:1}
.footer-contact-item{display:flex;flex-direction:column;gap:20px;color:rgba(255,255,255,.62)}
.footer-contact-item p{font-size:14px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;font-size:13px;color:rgba(255,255,255,.4);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
/* 响应式 */
@media (max-width:1280px){
  .nav-shell{width:min(1280px,calc(100% - 40px))}
}
@media (max-width:1024px){
  .nav-menu{display:none}
  .nav-actions .search-box{display:none}
  .menu-toggle{display:inline-flex}
  .mobile-panel.open{display:block}
  .hero-grid{grid-template-columns:1fr;gap:42px}
  .hero{min-height:auto;padding-top:110px}
  .hero-visual{max-width:560px}
  .metrics-grid{grid-template-columns:repeat(2,1fr)}
  .contrast-grid{grid-template-columns:1fr}
  .service-grid{grid-template-columns:1fr}
  .metric-row{grid-template-columns:100px 1fr auto;gap:14px}
  .faq-inner{grid-template-columns:1fr;gap:60px}
  .cta-grid{grid-template-columns:1fr;gap:52px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:44px}
  .compare-block{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .section{padding-block:72px}
  .nav-actions .login{display:none}
  .mobile-panel .mobile-quick-actions{margin-top:18px;display:flex;flex-direction:column;gap:12px}
  .mobile-panel .mobile-quick-actions a{min-height:50px;align-items:center;justify-content:center}
  .hero-inner{padding-block:80px 110px}
  .hero h1{font-size:clamp(34px,9vw,46px)}
  .hero-lead{font-size:16px}
  .section-head h2{font-size:30px}
  .contrast-section::before{height:3px}
  .compare-block{grid-template-columns:1fr;gap:14px}
  .metric-row{grid-template-columns:90px 1fr auto}
  .news-head{align-items:flex-start;flex-direction:column}
  .news-row-link{gap:16px;padding:20px 8px}
  .news-visual{width:62px;height:62px}
  .news-content h3{font-size:16px}
  .faq-inner{grid-template-columns:1fr}
  .faq-list details summary{font-size:16px}
  .cta-grid{gap:48px}
  .form-card{padding:26px}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:520px){
  .container{width:min(1280px,calc(100% - 28px))}
  .nav-shell{gap:8px;height:68px}
  .brand-name{font-size:18px}
  .nav-cta{min-height:36px;padding:0 15px;font-size:13px}
  .metrics-grid{grid-template-columns:1fr 1fr;gap:12px}
  .metric-card{padding:20px 16px}
  .metric-value{font-size:32px}
  .metric-label{font-size:12px}
  .form-grid{grid-template-columns:1fr}
  .faq-list details .faq-a{padding-right:0}
  .footer-bottom{flex-direction:column}
  .metric-row{grid-template-columns:1fr;gap:8px}
  .metric-bar{max-width:none;width:100%}
  .metric-val{justify-self:start}
  .service-body{padding:22px}
  .form-card{border-radius:14px;padding:20px}
}

/* roulang page: category1 */
:root {
    --primary: #F6481F;
    --primary-dark: #D93A16;
    --accent: #1DBFAE;
    --bg: #F7F8F8;
    --surface: #FFFFFF;
    --text: #15181C;
    --muted: #5B6068;
    --border: #E9EBEE;
    --dark: #0D1014;
    --dark-text: #F2F4F7;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow-sm: 0 6px 18px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 14px 28px rgba(0, 0, 0, 0.08);
    --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  }

  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
  }

  img {
    max-width: 100%;
    display: block;
  }

  a {
    color: inherit;
    text-decoration: none;
    transition: color .2s ease;
  }

  a:hover {
    color: var(--primary);
  }

  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  textarea:focus-visible,
  select:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
  }

  button,
  input,
  select,
  textarea {
    font-family: inherit;
    font-size: 16px;
  }

  .container {
    max-width: 1280px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
  }

  .brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    white-space: nowrap;
  }

  .brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), #ff7a45);
    color: #fff;
    font-size: 20px;
    font-weight: 800;
    line-height: 1;
    box-shadow: 0 6px 14px rgba(246, 72, 31, 0.28);
  }

  .brand-mark span {
    transform: skewX(-6deg);
  }

  .brand-name {
    display: flex;
    flex-direction: column;
    font-size: 21px;
    font-weight: 800;
    letter-spacing: 0.02em;
    line-height: 1.15;
    color: var(--text);
  }

  .brand-name small {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.16em;
    color: var(--muted);
  }

  .site-header {
    position: relative;
    z-index: 50;
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(8px);
  }

  .header-inner {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 72px;
  }

  .nav-menu {
    display: flex;
    align-items: center;
    gap: 6px;
  }

  .nav-link {
    display: inline-flex;
    align-items: center;
    min-height: 40px;
    padding: 0 16px;
    border-radius: 8px;
    font-weight: 600;
    color: #2a2f36;
    line-height: 1;
    position: relative;
  }

  .nav-link:hover {
    color: var(--primary);
    background: #f4f5f6;
  }

  .nav-link.active {
    color: var(--text);
    font-weight: 700;
  }

  .nav-link.active::after {
    content: "";
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 4px;
    height: 2px;
    border-radius: 2px;
    background: var(--primary);
  }

  .header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
  }

  .header-search {
    position: relative;
    display: flex;
    align-items: center;
    width: 220px;
    height: 40px;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: #f2f4f5;
    transition: border .2s, background .2s;
  }

  .header-search:focus-within {
    border-color: var(--primary);
    background: #fff;
  }

  .header-search svg {
    margin-left: 12px;
    flex: none;
  }

  .header-search input {
    flex: 1;
    min-width: 0;
    padding: 0 10px 0 6px;
    border: 0;
    background: transparent;
    color: var(--text);
    font-size: 14px;
    outline: none;
  }

  .header-search input::placeholder {
    color: #9aa1aa;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 0 18px;
    border-radius: 8px;
    border: 1px solid transparent;
    font-weight: 600;
    font-size: 15px;
    line-height: 1;
    cursor: pointer;
    transition: background .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .12s ease;
  }

  .btn:active {
    transform: translateY(1px);
  }

  .btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    box-shadow: 0 6px 16px rgba(246, 72, 31, 0.22);
  }

  .btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #fff;
    box-shadow: 0 10px 20px rgba(217, 58, 22, 0.26);
  }

  .btn-outline-dark {
    background: transparent;
    border-color: rgba(255, 255, 255, 0.55);
    color: #fff;
  }

  .btn-outline-dark:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
    color: #fff;
  }

  .nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    cursor: pointer;
  }

  .mobile-nav {
    display: none;
  }

  .category-banner {
    position: relative;
    padding: 58px 0 48px;
    background: #f0f2f3;
    border-bottom: 1px solid var(--border);
    overflow: hidden;
  }

  .category-banner::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
      linear-gradient(100deg, rgba(246, 72, 31, 0.08), transparent 60%),
      url('/assets/images/backpic/back-2.png') no-repeat right center / cover;
    pointer-events: none;
  }

  .category-banner .container {
    position: relative;
    z-index: 1;
  }

  .crumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--muted);
    margin-bottom: 14px;
  }

  .crumb a {
    color: var(--muted);
  }

  .crumb a:hover {
    color: var(--primary);
  }

  .crumb span {
    color: #9aa1aa;
  }

  .banner-kicker {
    margin: 0 0 6px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--primary);
  }

  .category-banner h1 {
    margin: 0 0 14px;
    font-size: clamp(30px, 5vw, 48px);
    line-height: 1.2;
    font-weight: 800;
    letter-spacing: -0.02em;
  }

  .banner-desc {
    max-width: 680px;
    margin: 0;
    font-size: 16px;
    color: #3d434b;
    line-height: 1.8;
  }

  .page-wrap {
    display: grid;
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 28px;
    padding-top: 36px;
    padding-bottom: 24px;
  }

  .cat-sidebar {
    position: sticky;
    top: 24px;
    align-self: start;
    display: flex;
    flex-direction: column;
    gap: 18px;
  }

  .side-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow-sm);
  }

  .side-card h2,
  .side-card p {
    margin: 0;
  }

  .side-card .side-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 14px;
  }

  .side-title .en {
    font-size: 11px;
    font-weight: 600;
    color: #b0b6bc;
    letter-spacing: 0.04em;
  }

  .side-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
  }

  .side-list a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    min-height: 40px;
    padding: 0 10px;
    border-radius: 8px;
    font-size: 15px;
    color: #343940;
    font-weight: 500;
  }

  .side-list a:hover {
    background: #f2f4f5;
    color: var(--primary);
  }

  .side-list a i {
    font-style: normal;
    font-size: 18px;
    color: #c4c9ce;
    transition: color .2s, transform .2s;
    transform: translateX(-2px);
  }

  .side-list a:hover i {
    color: var(--primary);
    transform: translateX(0);
  }

  .scene-box {
    background: var(--dark);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius);
    padding: 22px 20px;
    color: var(--dark-text);
    background-image: linear-gradient(145deg, rgba(246, 72, 31, 0.16), transparent 50%), url('/assets/images/backpic/back-3.png');
    background-size: cover;
    background-position: center;
  }

  .scene-box .side-title {
    color: var(--dark-text);
    margin-bottom: 8px;
  }

  .scene-box .side-title .en {
    color: rgba(255, 255, 255, 0.45);
  }

  .scene-box p {
    color: rgba(255, 255, 255, 0.72);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 14px;
  }

  .contact-mini {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .contact-mini a {
    color: #fff;
    font-weight: 600;
  }

  .news-corpus {
    display: flex;
    flex-direction: column;
    gap: 18px;
  }

  .feature-post {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    overflow: hidden;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
  }

  .feature-cover {
    min-height: 260px;
    background: #e2e5e7;
    position: relative;
  }

  .feature-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .feature-body {
    padding: 28px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    gap: 16px;
  }

  .post-tag {
    display: inline-flex;
    align-items: center;
    padding: 5px 11px;
    border-radius: 6px;
    background: #fff1ed;
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    line-height: 1.2;
  }

  .post-tag.accent {
    background: #e7f7f5;
    color: #109a8c;
  }

  .feature-body h2,
  .feed-head h2 {
    margin: 0;
    font-size: 22px;
    line-height: 1.4;
    font-weight: 700;
  }

  .feature-body p {
    margin: 0;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.8;
  }

  .post-date {
    margin-top: auto;
    font-size: 13px;
    color: #969da6;
    display: flex;
    gap: 18px;
  }

  .post-link {
    color: var(--primary);
    font-weight: 600;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }

  .post-link:hover {
    color: var(--primary-dark);
  }

  .post-link svg {
    transition: transform .2s;
  }

  .post-link:hover svg {
    transform: translateX(3px);
  }

  .feed-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px 22px 8px;
    box-shadow: var(--shadow-sm);
  }

  .feed-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 6px;
  }

  .feed-head h2 {
    font-size: 20px;
  }

  .link-more {
    color: var(--muted);
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
  }

  .link-more:hover {
    color: var(--primary);
  }

  .news-feed {
    margin-top: 12px;
  }

  .info-item {
    display: flex;
    align-items: stretch;
    gap: 18px;
    padding: 18px 0;
    border-bottom: 1px solid var(--border);
    transition: background .2s ease;
  }

  .info-item:hover {
    background: #fbfcfc;
  }

  .info-item:last-child {
    border-bottom: 0;
  }

  .info-thumb {
    flex: none;
    width: 120px;
    min-height: 86px;
    border-radius: 10px;
    overflow: hidden;
    background: #eef0f1;
  }

  .info-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .info-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    gap: 4px;
  }

  .info-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 13px;
    color: #8e959e;
  }

  .info-meta .tag {
    background: #f1f3f5;
    color: #4d545c;
    border-radius: 5px;
    padding: 2px 8px;
  }

  .info-content h3 {
    margin: 0;
    font-size: 16px;
    line-height: 1.6;
    font-weight: 700;
    color: var(--text);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .info-content p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .read-arrow {
    margin-top: 3px;
    color: var(--muted);
    font-size: 13px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
  }

  .read-arrow:hover {
    color: var(--primary);
  }

  .section {
    padding: 60px 0;
  }

  .cycle-section {
    background: #fff;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 64px 0;
  }

  .section-head {
    margin-bottom: 28px;
  }

  .section-head .eyebrow {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--primary);
    margin-bottom: 8px;
  }

  .section-head h2 {
    margin: 0;
    font-size: clamp(26px, 4vw, 36px);
    line-height: 1.35;
    font-weight: 800;
    letter-spacing: -0.01em;
  }

  .section-head p {
    max-width: 680px;
    margin: 8px 0 0;
    color: var(--muted);
    font-size: 16px;
  }

  .stage-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 30px;
  }

  .stage-item {
    background: #f8f9fa;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 20px;
    transition: transform .2s ease, box-shadow .2s ease;
  }

  .stage-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
  }

  .stage-index {
    display: block;
    font-size: 26px;
    font-weight: 700;
    color: #e1e4e7;
    line-height: 1;
    font-variant-numeric: tabular-nums;
    margin-bottom: 18px;
  }

  .stage-item h3 {
    margin: 0 0 8px;
    font-size: 17px;
    font-weight: 700;
    line-height: 1.5;
  }

  .stage-item p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.8;
  }

  .contact-section {
    background: var(--dark);
    color: var(--dark-text);
    padding: 54px 0;
    background-image: linear-gradient(120deg, rgba(246, 72, 31, 0.18), transparent 44%), url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
  }

  .contact-section .container {
    display: grid;
    grid-template-columns: 1.4fr 0.6fr;
    gap: 28px;
    align-items: center;
  }

  .contact-copy .eyebrow {
    color: #ff8d6a;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.08em;
  }

  .contact-copy h2 {
    margin: 8px 0 12px;
    font-size: clamp(24px, 3.6vw, 36px);
    line-height: 1.35;
    font-weight: 800;
  }

  .contact-copy p {
    margin: 0;
    color: rgba(255, 255, 255, 0.72);
    max-width: 600px;
    line-height: 1.8;
  }

  .contact-actions {
    display: flex;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 12px;
  }

  .contact-actions .btn {
    min-width: 150px;
    min-height: 48px;
  }

  .site-footer {
    background: #090b0e;
    color: rgba(255, 255, 255, 0.82);
    padding: 64px 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 0.8fr 0.9fr 1fr;
    gap: 36px;
    padding-bottom: 36px;
  }

  .footer-brand .brand-name {
    color: #fff;
  }

  .footer-brand-text {
    margin: 18px 0 0;
    color: rgba(255, 255, 255, 0.56);
    font-size: 14px;
    line-height: 1.8;
    max-width: 340px;
  }

  .footer-col h4 {
    margin: 0 0 16px;
    color: #fff;
    font-size: 16px;
    font-weight: 700;
  }

  .footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .footer-links a {
    color: rgba(255, 255, 255, 0.62);
    font-size: 14px;
  }

  .footer-links a:hover {
    color: #fff;
  }

  .footer-contact-item p {
    margin: 0 0 8px;
    color: rgba(255, 255, 255, 0.62);
    font-size: 14px;
    line-height: 1.7;
    word-break: break-all;
  }

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 22px 0;
    display: flex;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    color: rgba(255, 255, 255, 0.4);
    font-size: 13px;
  }

  @media (max-width: 1280px) {
    .container {
      padding-left: 20px;
      padding-right: 20px;
    }
  }

  @media (max-width: 1024px) {
    .header-search {
      width: 160px;
    }

    .header-search input {
      max-width: 110px;
    }

    .brand-name {
      font-size: 19px;
    }

    .page-wrap {
      grid-template-columns: 1fr;
    }

    .cat-sidebar {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      position: static;
    }

    .cat-sidebar .scene-box {
      grid-column: span 2;
    }

    .stage-grid {
      grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
      grid-template-columns: 1fr 1fr;
    }

    .feature-post {
      grid-template-columns: 1fr;
    }

    .feature-cover {
      min-height: 200px;
    }
  }

  @media (max-width: 768px) {
    .header-inner {
      min-height: 64px;
      gap: 10px;
    }

    .nav-menu,
    .header-search {
      display: none;
    }

    .nav-toggle {
      display: inline-flex;
    }

    .mobile-nav {
      display: block;
      overflow: hidden;
      max-height: 0;
      transition: max-height .3s ease;
      background: #fff;
      border-bottom: 1px solid var(--border);
    }

    .mobile-nav.open {
      max-height: 360px;
    }

    .mobile-nav .nav-menu {
      display: flex;
      flex-direction: column;
      align-items: stretch;
      gap: 0;
      padding: 10px 20px 18px;
    }

    .mobile-nav .nav-link {
      min-height: 48px;
      border-radius: 8px;
      border-bottom: 1px solid #f1f3f4;
    }

    .mobile-nav .nav-link.active::after {
      display: none;
    }

    .header-actions .btn-text {
      display: none;
    }

    .category-banner {
      padding: 38px 0 34px;
    }

    .category-banner h1 {
      font-size: 30px;
    }

    .banner-desc {
      font-size: 15px;
    }

    .info-item {
      flex-direction: column;
      gap: 10px;
    }

    .info-thumb {
      width: 100%;
      height: 120px;
    }

    .feed-head {
      align-items: flex-start;
      flex-direction: column;
      margin-bottom: 2px;
    }

    .cycle-section {
      padding: 40px 0;
    }

    .stage-grid {
      grid-template-columns: 1fr;
      gap: 12px;
    }

    .section-head h2 {
      font-size: 26px;
    }

    .contact-section .container {
      grid-template-columns: 1fr;
    }

    .contact-actions {
      justify-content: flex-start;
    }

    .contact-actions .btn {
      min-width: calc(50% - 8px);
    }

    .footer-grid {
      grid-template-columns: 1fr;
      gap: 28px;
    }

    .footer-bottom {
      flex-direction: column;
      align-items: flex-start;
    }
  }

  @media (max-width: 520px) {
    .container {
      padding-left: 16px;
      padding-right: 16px;
    }

    .brand-name {
      font-size: 18px;
    }

    .brand-mark {
      width: 34px;
      height: 34px;
      font-size: 17px;
    }

    .btn {
      padding: 0 12px;
    }

    .cat-sidebar {
      grid-template-columns: 1fr;
    }

    .cat-sidebar .scene-box {
      grid-column: auto;
    }

    .feature-body {
      padding: 20px;
    }

    .info-meta {
      font-size: 12px;
    }

    .contact-copy h2 {
      font-size: 24px;
    }

    .contact-actions {
      flex-direction: column;
    }

    .contact-actions .btn {
      width: 100%;
    }
  }

/* roulang page: article */
:root {
      --main: #F6481F;
      --main-hover: #D93A16;
      --main-soft: rgba(246, 72, 31, 0.1);
      --accent: #1DBFAE;
      --page-bg: #F7F8F8;
      --card-bg: #FFFFFF;
      --deep-bg: #0D1014;
      --deep-text: #F2F4F7;
      --text: #15181C;
      --text-weak: #5B6068;
      --border: #E9EBEE;
      --border-deep: rgba(255, 255, 255, 0.12);
      --radius-lg: 12px;
      --radius-md: 8px;
      --card-shadow: 0 6px 18px rgba(0, 0, 0, 0.04);
      --card-shadow-hover: 0 14px 28px rgba(0, 0, 0, 0.08);
      --font-body: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
      --max-width: 1280px;
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-body);
      background-color: var(--page-bg);
      color: var(--text);
      font-size: 16px;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }

    img {
      display: block;
      max-width: 100%;
      background-color: #E3E6EA;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    ul,
    ol {
      list-style: none;
    }

    button,
    input,
    textarea {
      font-family: inherit;
      color: inherit;
    }

    button {
      border: none;
      background: none;
      cursor: pointer;
    }

    a:focus-visible,
    button:focus-visible,
    input:focus-visible {
      outline: 2px solid rgba(246, 72, 31, 0.6);
      outline-offset: 2px;
    }

    .skip-link {
      position: fixed;
      left: -999px;
      top: 0;
      z-index: 200;
      background: var(--main);
      color: #fff;
      padding: 10px 18px;
      border-radius: 0 0 8px 0;
      font-weight: 700;
    }

    .skip-link:focus {
      left: 0;
    }

    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding-left: 24px;
      padding-right: 24px;
      width: 100%;
    }

    section {
      scroll-margin-top: 88px;
    }

    /* ========== Header ========== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 120;
      background: rgba(255, 255, 255, 0.96);
      border-bottom: 1px solid var(--border);
      backdrop-filter: blur(14px);
    }

    .header-inner {
      height: 72px;
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
      margin-right: 8px;
    }

    .brand-mark {
      width: 38px;
      height: 38px;
      border-radius: 10px 10px 10px 3px;
      background: var(--main);
      color: #fff;
      font-size: 18px;
      font-weight: 800;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 6px 12px rgba(246, 72, 31, 0.22);
    }

    .brand-mark span {
      transform: translateY(-1px);
    }

    .brand-name {
      font-size: 19px;
      line-height: 1.1;
      font-weight: 800;
      letter-spacing: 0.02em;
      color: var(--text);
      white-space: nowrap;
    }

    .brand-name small {
      display: block;
      font-size: 10px;
      font-weight: 700;
      letter-spacing: 0.2em;
      color: var(--main);
      margin-top: 3px;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 2px;
      margin-left: auto;
    }

    .nav-link {
      position: relative;
      display: inline-block;
      padding: 9px 13px;
      border-radius: 8px;
      font-size: 15px;
      font-weight: 500;
      color: #4C5158;
      line-height: 1.5;
      transition: background-color 0.2s ease, color 0.2s ease;
    }

    .nav-link:hover {
      background: #F1F2F4;
      color: var(--text);
    }

    .nav-link.active {
      background: #F7F1EE;
      color: var(--text);
      font-weight: 700;
    }

    .nav-link.active::after {
      content: "";
      position: absolute;
      left: 14px;
      right: 14px;
      bottom: -1px;
      height: 2px;
      border-radius: 2px;
      background: var(--main);
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-left: 8px;
      flex-shrink: 0;
    }

    .search-form {
      position: relative;
      display: block;
    }

    .search-form svg {
      position: absolute;
      left: 13px;
      top: 50%;
      transform: translateY(-50%);
      color: #8B9199;
      pointer-events: none;
    }

    .search-form input {
      width: 220px;
      height: 38px;
      border: 1px solid #E5E7EA;
      background: #F7F8F9;
      border-radius: 999px;
      padding: 0 18px 0 38px;
      font-size: 14px;
      color: var(--text);
      transition: border-color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
    }

    .search-form input::placeholder {
      color: #A0A6AE;
    }

    .search-form input:focus {
      background: #fff;
      border-color: var(--main);
      box-shadow: 0 0 0 3px rgba(246, 72, 31, 0.14);
      outline: none;
    }

    .login-link {
      display: inline-flex;
      align-items: center;
      height: 38px;
      padding: 0 10px;
      color: #4C5158;
      font-size: 15px;
      font-weight: 600;
      transition: color 0.2s ease;
    }

    .login-link:hover {
      color: var(--main);
    }

    .btn-primary,
    .btn-ghost,
    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border: none;
      border-radius: var(--radius-md);
      font-weight: 700;
      font-size: 15px;
      text-align: center;
      white-space: nowrap;
      transition: transform 0.2s ease, background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .btn-primary {
      height: 48px;
      padding: 0 24px;
      background: var(--main);
      color: #fff;
      border-radius: 8px;
      box-shadow: 0 6px 16px rgba(246, 72, 31, 0.24);
    }

    .btn-primary:hover {
      background: var(--main-hover);
      transform: translateY(-1px);
      box-shadow: 0 10px 20px rgba(246, 72, 31, 0.28);
    }

    .btn-primary:active {
      transform: translateY(1px);
    }

    .btn-ghost {
      height: 48px;
      padding: 0 24px;
      background: rgba(255, 255, 255, 0.06);
      color: #EDF0F3;
      border: 1px solid rgba(255, 255, 255, 0.35);
    }

    .btn-ghost:hover {
      background: rgba(255, 255, 255, 0.14);
      border-color: rgba(255, 255, 255, 0.62);
    }

    .btn-outline {
      height: 40px;
      padding: 0 18px;
      background: #fff;
      border: 1px solid #D8DDE3;
      color: #2F3237;
    }

    .btn-outline:hover {
      border-color: var(--main);
      color: var(--main);
      background: #FFF9F8;
    }

    .btn-header {
      height: 38px;
      padding: 0 18px;
      border-radius: 8px;
      box-shadow: 0 4px 12px rgba(246, 72, 31, 0.2);
    }

    .nav-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border-radius: 8px;
      background: transparent;
      align-items: center;
      justify-content: center;
      border: 1px solid #E9EBEE;
      transition: background 0.2s;
    }

    .nav-toggle:hover {
      background: #F1F2F4;
    }

    .nav-toggle span,
    .nav-toggle span::before,
    .nav-toggle span::after {
      content: "";
      display: block;
      width: 18px;
      height: 2px;
      background: var(--text);
      border-radius: 10px;
      position: relative;
      transition: transform 0.2s ease;
    }

    .nav-toggle span::before {
      position: absolute;
      top: -6px;
    }

    .nav-toggle span::after {
      position: absolute;
      top: 6px;
    }

    .mobile-nav-panel {
      display: none;
      position: absolute;
      top: 72px;
      left: 0;
      right: 0;
      z-index: 119;
      background: #fff;
      border-bottom: 1px solid var(--border);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
      padding: 10px 24px 24px;
    }

    .mobile-nav-panel.open {
      display: block;
    }

    .mobile-links {
      display: block;
      padding: 10px 0;
    }

    .mobile-links a {
      display: block;
      min-height: 48px;
      line-height: 48px;
      padding: 0 12px;
      font-size: 17px;
      font-weight: 600;
      color: var(--text);
      border-bottom: 1px solid #F0F1F3;
    }

    .mobile-links a.active {
      color: var(--main);
      background: #FFF7F5;
      border-radius: 8px;
      border-bottom-color: transparent;
    }

    .mobile-links a:last-child {
      border-bottom: none;
    }

    .mobile-search {
      position: relative;
      margin: 12px 0 18px;
    }

    .mobile-search svg {
      position: absolute;
      left: 14px;
      top: 50%;
      transform: translateY(-50%);
      color: #8B9199;
    }

    .mobile-search input {
      width: 100%;
      height: 48px;
      border: 1px solid #E5E7EA;
      background: #F7F8F9;
      border-radius: 999px;
      padding: 0 18px 0 42px;
      font-size: 16px;
    }

    .mobile-action {
      display: flex;
      gap: 10px;
    }

    .mobile-action .btn-primary {
      flex: 1;
    }

    /* ========== Hero / Page Head ========== */
    .page-hero {
      position: relative;
      overflow: hidden;
      padding: 76px 0 70px;
      background: var(--deep-bg);
      color: var(--deep-text);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .page-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image: url("/assets/images/backpic/back-1.png");
      background-size: cover;
      background-position: right center;
      opacity: 0.2;
      pointer-events: none;
    }

    .page-hero::after {
      content: "";
      position: absolute;
      right: -120px;
      top: -160px;
      width: 420px;
      height: 420px;
      border-radius: 50%;
      background: rgba(246, 72, 31, 0.22);
      filter: blur(120px);
      pointer-events: none;
    }

    .page-hero .container {
      position: relative;
      z-index: 1;
    }

    .page-hero-row {
      display: grid;
      grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
      gap: 52px;
      align-items: center;
    }

    .page-intro {
      min-width: 0;
    }

    .eyebrow {
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 0.18em;
      color: #AEB6BE;
      text-transform: uppercase;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .eyebrow-dot {
      display: inline-block;
      width: 9px;
      height: 9px;
      background: var(--accent);
      border-radius: 3px;
      transform: rotate(45deg);
    }

    .page-hero h1 {
      font-size: clamp(40px, 6vw, 64px);
      line-height: 1.18;
      font-weight: 800;
      letter-spacing: 0.02em;
      margin-bottom: 20px;
    }

    .page-hero h1 span {
      color: var(--main);
    }

    .page-lead {
      font-size: 17px;
      line-height: 1.85;
      color: #C8CED5;
      max-width: 640px;
      margin-bottom: 26px;
    }

    .intro-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 32px;
    }

    .tag-item {
      display: inline-flex;
      align-items: center;
      min-height: 30px;
      padding: 0 12px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.17);
      font-size: 13px;
      color: #DDE1E6;
    }

    .tag-item strong {
      color: var(--accent);
      font-weight: 700;
    }

    .hero-ctas {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .hero-visual {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 0 22px 46px rgba(0, 0, 0, 0.3);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .hero-visual img {
      width: 100%;
      height: 390px;
      object-fit: cover;
    }

    .visual-note {
      position: absolute;
      left: 16px;
      top: 16px;
      background: rgba(13, 16, 20, 0.82);
      color: #fff;
      border: 1px solid rgba(255, 255, 255, 0.14);
      padding: 8px 14px;
      border-radius: 999px;
      font-size: 13px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      backdrop-filter: blur(6px);
    }

    .visual-note i {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 0 4px rgba(29, 191, 174, 0.16);
    }

    .visual-caption {
      position: absolute;
      left: 16px;
      right: 16px;
      bottom: 14px;
      background: rgba(13, 16, 20, 0.75);
      border: 1px solid rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(8px);
      border-radius: 10px;
      padding: 13px 16px;
      color: #DDE1E6;
      font-size: 13px;
      line-height: 1.55;
    }

    .visual-caption strong {
      display: block;
      color: #fff;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 2px;
    }

    /* ========== Metric cards ========== */
    .metric-section {
      background: #fff;
      padding: 54px 0 58px;
    }

    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 24px;
      flex-wrap: wrap;
      margin-bottom: 30px;
    }

    .section-head h2 {
      font-size: clamp(27px, 4vw, 38px);
      line-height: 1.35;
      font-weight: 800;
      color: var(--text);
    }

    .section-kicker {
      font-size: 12px;
      font-weight: 700;
      color: var(--main);
      letter-spacing: 0.18em;
      text-transform: uppercase;
      margin-bottom: 10px;
    }

    .data-note {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 7px 13px;
      background: #FFF3F0;
      color: var(--main);
      border-radius: 999px;
      font-size: 13px;
      font-weight: 700;
    }

    .metric-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      margin-top: 8px;
    }

    .metric-card {
      background: var(--page-bg);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 22px 22px 20px;
      min-height: 190px;
      position: relative;
      overflow: hidden;
      transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    }

    .metric-card::after {
      content: "";
      position: absolute;
      top: 0;
      right: 0;
      width: 38px;
      height: 38px;
      background: rgba(246, 72, 31, 0.04);
      border-radius: 0 0 0 34px;
    }

    .metric-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--card-shadow-hover);
      border-color: #E3E6EA;
    }

    .metric-label {
      font-size: 14px;
      color: var(--text-weak);
      margin-bottom: 12px;
      font-weight: 500;
    }

    .metric-value {
      font-size: 42px;
      font-weight: 800;
      color: var(--text);
      line-height: 1.15;
      font-variant-numeric: tabular-nums;
      letter-spacing: -0.02em;
    }

    .metric-value small {
      font-size: 20px;
      font-weight: 700;
      margin-left: 3px;
    }

    .metric-bottom {
      margin-top: 18px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
      border-top: 1px solid #E7E8EA;
      padding-top: 12px;
    }

    .metric-trend {
      font-size: 13px;
      font-weight: 700;
      color: var(--accent);
      font-variant-numeric: tabular-nums;
    }

    .metric-unit-note {
      font-size: 12px;
      color: #A0A6AE;
    }

    /* ========== Leaderboard ========== */
    .board-section {
      background: var(--page-bg);
      padding: 68px 0 72px;
    }

    .board-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 300px;
      gap: 20px;
      align-items: start;
    }

    .board-panel {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      box-shadow: var(--card-shadow);
      padding: 8px 20px 4px;
    }

    .board-row {
      display: grid;
      grid-template-columns: 54px minmax(0, 1fr) 130px 94px;
      gap: 16px;
      align-items: center;
      padding: 20px 4px;
      border-bottom: 1px solid #F0F1F2;
      min-height: 84px;
    }

    .board-row:last-child {
      border-bottom: none;
    }

    .rank-index {
      font-size: 34px;
      font-weight: 800;
      color: #D7DEE3;
      line-height: 1;
      font-variant-numeric: tabular-nums;
      letter-spacing: -0.04em;
    }

    .board-row.is-top .rank-index {
      color: var(--main);
    }

    .board-title {
      font-size: 17px;
      font-weight: 800;
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      line-height: 1.45;
      margin-bottom: 5px;
    }

    .rank-tag {
      display: inline-flex;
      align-items: center;
      height: 21px;
      padding: 0 8px;
      background: var(--main);
      color: #fff;
      border-radius: 999px;
      font-size: 11px;
      font-weight: 700;
      line-height: 1;
    }

    .board-meta {
      font-size: 13px;
      color: #949BA3;
      line-height: 1.5;
    }

    .board-value {
      text-align: right;
    }

    .board-value span {
      display: block;
      font-size: 12px;
      color: #949BA3;
      margin-bottom: 2px;
    }

    .board-value strong {
      font-size: 20px;
      font-weight: 800;
      font-variant-numeric: tabular-nums;
      line-height: 1.3;
    }

    .trend {
      display: inline-flex;
      align-items: center;
      justify-content: flex-end;
      gap: 3px;
      font-size: 13px;
      font-weight: 700;
      font-variant-numeric: tabular-nums;
    }

    .trend.up {
      color: var(--accent);
    }

    .trend.down {
      color: #7F878E;
    }

    .board-aside {
      background: #fff;
      border: 1px solid var(--border);
      box-shadow: var(--card-shadow);
      border-radius: var(--radius-lg);
      padding: 22px 20px 20px;
    }

    .aside-tag {
      display: inline-flex;
      align-items: center;
      font-size: 12px;
      font-weight: 800;
      letter-spacing: 0.1em;
      color: var(--main);
      margin-bottom: 14px;
      text-transform: uppercase;
    }

    .aside-tag::before {
      content: "";
      width: 8px;
      height: 8px;
      background: var(--main);
      border-radius: 3px;
      margin-right: 7px;
      transform: rotate(45deg);
    }

    .board-aside h3 {
      font-size: 20px;
      line-height: 1.5;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .board-aside p {
      font-size: 14px;
      color: var(--text-weak);
      line-height: 1.8;
      margin-bottom: 20px;
    }

    .aside-list li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      padding: 12px 0;
      border-top: 1px solid #F0F1F2;
      font-size: 14px;
      line-height: 1.6;
      color: #454A51;
    }

    .aside-list li:first-child {
      border-top: none;
    }

    .aside-list i {
      font-style: normal;
      font-weight: 800;
      color: var(--main);
      font-family: "PingFang SC", sans-serif;
      font-variant-numeric: tabular-nums;
      flex: 0 0 20px;
    }

    /* ========== Analysis ========== */
    .analysis-section {
      background: #fff;
      padding: 66px 0 72px;
    }

    .analysis-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) minmax(370px, 0.95fr);
      gap: 28px;
      align-items: stretch;
    }

    .measure-card {
      background: var(--page-bg);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 30px 30px 26px;
    }

    .measure-card h3 {
      font-size: 24px;
      font-weight: 800;
      margin-bottom: 4px;
    }

    .measure-sub {
      font-size: 14px;
      color: var(--text-weak);
      margin-bottom: 26px;
    }

    .bar-line {
      margin-bottom: 18px;
    }

    .bar-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      margin-bottom: 9px;
    }

    .bar-head span {
      font-size: 14px;
      font-weight: 600;
      color: #373C42;
    }

    .bar-head strong {
      font-size: 15px;
      font-weight: 800;
      color: var(--text);
      font-variant-numeric: tabular-nums;
    }

    .bar-track {
      height: 8px;
      border-radius: 999px;
      background: #E2E6E9;
      overflow: hidden;
    }

    .bar-fill {
      height: 100%;
      border-radius: 999px;
      background: var(--main);
    }

    .bar-fill.cyan {
      background: var(--accent);
    }

    .archive-card {
      background: #0D1014;
      color: #E9EDF2;
      border-radius: var(--radius-lg);
      overflow: hidden;
      position: relative;
      padding: 30px 30px 18px;
    }

    .archive-card::before {
      content: "";
      position: absolute;
      top: -40px;
      right: -40px;
      width: 140px;
      height: 140px;
      border-radius: 50%;
      background: rgba(246, 72, 31, 0.2);
      filter: blur(56px);
    }

    .archive-card h3 {
      font-size: 23px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 8px;
      position: relative;
    }

    .archive-card > p {
      color: #AAB2BC;
      font-size: 14px;
      margin-bottom: 22px;
      line-height: 1.8;
      position: relative;
    }

    .archive-list {
      position: relative;
    }

    .archive-list li {
      display: grid;
      grid-template-columns: 46px 1fr;
      gap: 12px;
      padding: 15px 0 15px 2px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .archive-list li:first-child {
      border-top: none;
    }

    .archive-list i {
      font-style: normal;
      font-weight: 800;
      color: var(--accent);
      font-size: 17px;
      font-variant-numeric: tabular-nums;
    }

    .archive-list strong {
      display: block;
      font-size: 15px;
      color: #fff;
      font-weight: 700;
      margin-bottom: 3px;
    }

    .archive-list span {
      font-size: 13px;
      color: #9AA3AD;
      line-height: 1.6;
    }

    /* ========== FAQ ========== */
    .faq-section {
      background: var(--page-bg);
      padding: 66px 0 72px;
    }

    .faq-wrap {
      max-width: 880px;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      box-shadow: var(--card-shadow);
      padding: 12px 30px 20px;
    }

    .faq-item {
      border-bottom: 1px solid #F0F1F2;
    }

    .faq-item:last-child {
      border-bottom: none;
    }

    .faq-item summary {
      list-style: none;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      padding: 18px 0 18px 2px;
      font-size: 17px;
      font-weight: 700;
      color: var(--text);
      position: relative;
      transition: color 0.2s ease;
    }

    .faq-item summary:hover {
      color: var(--main);
    }

    .faq-item summary::-webkit-details-marker {
      display: none;
    }

    .faq-item summary::after {
      content: "+";
      font-size: 24px;
      font-weight: 400;
      color: #8B9199;
      line-height: 1;
      transition: transform 0.25s ease, color 0.25s ease;
      display: inline-block;
      flex: 0 0 24px;
      text-align: right;
    }

    .faq-item[open] summary::after {
      content: "+";
      transform: rotate(45deg);
      color: var(--main);
    }

    .faq-answer {
      padding: 0 2px 22px 4px;
      max-width: 730px;
    }

    .faq-answer p {
      font-size: 15px;
      line-height: 1.85;
      color: var(--text-weak);
    }

    /* ========== CTA ========== */
    .cta-section {
      position: relative;
      background: var(--deep-bg);
      color: #fff;
      padding: 58px 0 62px;
      overflow: hidden;
    }

    .cta-section::before {
      content: "";
      position: absolute;
      right: 8%;
      top: -90px;
      width: 330px;
      height: 330px;
      border-radius: 50%;
      background: rgba(246, 72, 31, 0.24);
      filter: blur(90px);
    }

    .cta-wrap {
      position: relative;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 36px;
      flex-wrap: wrap;
    }

    .cta-heading {
      max-width: 700px;
    }

    .cta-heading .eyebrow {
      color: var(--accent);
      margin-bottom: 10px;
    }

    .cta-heading h2 {
      font-size: clamp(28px, 4.4vw, 42px);
      line-height: 1.35;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .cta-heading p {
      color: #B9C0C9;
      font-size: 16px;
      line-height: 1.8;
      max-width: 590px;
    }

    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
    }

    /* ========== Footer ========== */
    .site-footer {
      background: #090C0F;
      color: #B7BEC6;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    .site-footer .container {
      padding-top: 58px;
      padding-bottom: 20px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: minmax(280px, 1.5fr) 1fr 1.2fr 1.4fr;
      gap: 40px;
      margin-bottom: 44px;
    }

    .footer-brand .brand {
      margin-bottom: 18px;
    }

    .footer-brand .brand-name,
    .footer-brand .brand-mark {
      color: #fff;
    }

    .footer-brand .brand-name small {
      color: var(--accent);
    }

    .footer-brand-text {
      font-size: 14px;
      line-height: 1.85;
      color: #9BA4AD;
      max-width: 340px;
    }

    .footer-col h4 {
      font-size: 15px;
      color: #fff;
      font-weight: 700;
      margin-bottom: 16px;
      line-height: 1.4;
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a {
      font-size: 14px;
      color: #A6AEB6;
      line-height: 1.6;
      display: inline-block;
      transition: color 0.2s ease, padding-left 0.2s ease;
    }

    .footer-links a:hover {
      color: #fff;
      padding-left: 5px;
    }

    .footer-contact-item p {
      font-size: 14px;
      line-height: 1.75;
      color: #A6AEB6;
      margin-bottom: 4px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 18px;
      padding-bottom: 4px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 10px;
      font-size: 12px;
      color: #8E959D;
    }

    /* ========== Responsive ========== */
    @media (max-width: 1180px) {
      .header-actions .search-form input {
        width: 170px;
      }

      .nav-link {
        font-size: 14px;
        padding: 8px 10px;
      }

      .header-actions .login-link {
        display: none;
      }
    }

    @media (max-width: 1024px) {
      .container {
        padding-left: 18px;
        padding-right: 18px;
      }

      .page-hero-row {
        grid-template-columns: 1fr;
        gap: 38px;
      }

      .hero-visual img {
        height: 320px;
      }

      .metric-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .board-layout {
        grid-template-columns: 1fr;
      }

      .analysis-grid {
        grid-template-columns: 1fr;
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
      }
    }

    @media (max-width: 900px) {
      .nav-menu {
        display: none;
      }

      .header-actions .search-form {
        display: none;
      }

      .nav-toggle {
        display: inline-flex;
      }

      .header-actions {
        margin-left: auto;
      }

      .login-link {
        display: none;
      }
    }

    @media (max-width: 768px) {
      .header-inner {
        height: 64px;
        gap: 10px;
      }

      .mobile-nav-panel {
        top: 64px;
      }

      .brand-mark {
        width: 34px;
        height: 34px;
        font-size: 16px;
        border-radius: 8px 8px 8px 2px;
      }

      .brand-name {
        font-size: 17px;
      }

      .brand-name small {
        letter-spacing: 0.12em;
      }

      .page-hero {
        padding: 52px 0 56px;
      }

      .page-hero h1 {
        font-size: 38px;
      }

      .page-lead {
        font-size: 15px;
      }

      .metric-section,
      .board-section,
      .analysis-section,
      .faq-section {
        padding: 48px 0 54px;
      }

      .metric-grid {
        gap: 12px;
      }

      .metric-card {
        padding: 18px 16px;
        min-height: 176px;
      }

      .metric-value {
        font-size: 34px;
      }

      .board-panel {
        padding: 4px 14px;
      }

      .board-row {
        grid-template-columns: 42px minmax(0, 1fr);
        gap: 6px 12px;
        padding: 17px 0;
        min-height: 88px;
      }

      .rank-index {
        font-size: 28px;
      }

      .board-value {
        text-align: left;
        margin-top: 6px;
        grid-column: 2;
      }

      .board-value span {
        display: inline;
        margin-right: 6px;
      }

      .trend {
        justify-content: flex-start;
      }

      .measure-card,
      .archive-card {
        padding: 24px 18px 20px;
      }

      .cta-wrap {
        flex-direction: column;
        align-items: flex-start;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }

      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }

    @media (max-width: 520px) {
      .container {
        padding-left: 14px;
        padding-right: 14px;
      }

      .header-inner {
        gap: 6px;
      }

      .brand-name small {
        display: none;
      }

      .brand-name {
        font-size: 16px;
      }

      .header-actions .btn-header {
        font-size: 13px;
        padding: 0 12px;
        height: 36px;
      }

      .metric-grid {
        grid-template-columns: 1fr;
      }

      .page-hero h1 {
        font-size: 34px;
      }

      .hero-visual img {
        height: 230px;
      }

      .hero-ctas,
      .cta-actions {
        flex-direction: column;
        width: 100%;
      }

      .hero-ctas .btn-primary,
      .hero-ctas .btn-ghost,
      .cta-actions .btn-primary,
      .cta-actions .btn-outline {
        width: 100%;
        padding-left: 12px;
        padding-right: 12px;
      }

      .section-head {
        flex-direction: column;
        align-items: flex-start;
      }

      .board-title {
        font-size: 15px;
      }

      .rank-tag {
        font-size: 10px;
        height: 19px;
        padding: 0 6px;
      }

      .board-value strong {
        font-size: 18px;
      }
    }

/* roulang page: category2 */
:root {
  --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --c-primary: #F6481F;
  --c-primary-dark: #D93A16;
  --c-accent: #1DBFAE;
  --c-bg: #F7F8F8;
  --c-card: #FFFFFF;
  --c-text: #15181C;
  --c-muted: #5B6068;
  --c-border: #E9EBEE;
  --c-dark: #0D1014;
  --c-dark-text: #F2F4F7;
  --radius-card: 12px;
  --radius-btn: 8px;
  --shadow-card: 0 6px 18px rgba(0, 0, 0, 0.04);
  --shadow-hover: 0 14px 28px rgba(0, 0, 0, 0.08);
  --transition: 0.22s ease;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

button,
input,
select,
textarea {
  font: inherit;
}

:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 3px;
}

[hidden] {
  display: none !important;
}

.container {
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: 32px;
}

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-btn);
  font-weight: 700;
  font-size: 15px;
  line-height: 1;
  padding: 14px 24px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  min-height: 48px;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(115deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
  color: #fff;
  border: none;
  box-shadow: 0 10px 24px rgba(246, 72, 31, 0.14);
}

.btn-primary:hover {
  background: linear-gradient(115deg, var(--c-primary-dark) 0%, #C42F0F 100%);
  box-shadow: 0 12px 28px rgba(246, 72, 31, 0.25);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-line {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: var(--c-dark-text);
}

.btn-line:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.7);
  color: #fff;
  transform: translateY(-2px);
}

.btn-line:active {
  transform: translateY(0);
}

.btn-sm {
  min-height: 42px;
  padding: 10px 18px;
  font-size: 14px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--c-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 18px;
  box-shadow: 0 8px 18px rgba(246, 72, 31, 0.2);
}

.brand-name {
  display: flex;
  flex-direction: column;
  font-weight: 800;
  font-size: 20px;
  line-height: 1.2;
  color: var(--c-text);
  letter-spacing: 0.02em;
}

.brand-name small {
  display: block;
  font-size: 10px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.16em;
  color: var(--c-muted);
  margin-top: 4px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  display: inline-block;
  padding: 10px 15px;
  color: #3B4047;
  font-weight: 500;
  font-size: 15px;
  border-radius: 8px;
  position: relative;
  transition: color var(--transition), background var(--transition);
}

.nav-link:hover {
  color: var(--c-text);
  background: #F1F2F3;
}

.nav-link.active {
  color: var(--c-text);
  font-weight: 700;
}

.nav-link.active::after {
  content: "";
  display: block;
  position: absolute;
  bottom: -19px;
  left: 50%;
  transform: translateX(-50%);
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--c-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.search-field {
  display: inline-flex;
  align-items: center;
  width: 230px;
  height: 40px;
  background: #F1F2F3;
  border-radius: 999px;
  padding: 0 14px;
  gap: 8px;
  border: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}

.search-field:focus-within {
  background: #fff;
  border-color: var(--c-primary);
}

.search-field svg {
  width: 16px;
  height: 16px;
  color: var(--c-muted);
  stroke: currentColor;
  flex-shrink: 0;
}

.search-field input {
  border: none;
  background: transparent;
  width: 100%;
  height: 100%;
  outline: none;
  font-size: 14px;
  color: var(--c-text);
}

.search-field input::placeholder {
  color: var(--c-muted);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  border: 1px solid var(--c-border);
  background: #fff;
  color: var(--c-text);
  cursor: pointer;
}

.nav-toggle svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.mobile-menu {
  display: none;
  background: #fff;
  border-top: 1px solid var(--c-border);
  padding: 8px 20px 20px;
}

.mobile-menu.open {
  display: block;
}

.mobile-menu .mobile-nav {
  display: flex;
  flex-direction: column;
  padding-block: 8px;
}

.mobile-menu .mobile-nav a {
  display: flex;
  align-items: center;
  min-height: 50px;
  padding: 0 8px;
  font-size: 18px;
  font-weight: 600;
  color: var(--c-text);
  border-radius: 10px;
}

.mobile-menu .mobile-nav a:hover {
  background: #F3F4F5;
}

.mobile-menu .mobile-nav a.active {
  color: var(--c-primary-dark);
}

.mobile-menu .mobile-cta-row {
  display: flex;
  gap: 12px;
  padding-top: 8px;
}

.mobile-menu .btn {
  flex: 1;
}

/* page hero */
.page-hero {
  position: relative;
  background: linear-gradient(120deg, rgba(10, 13, 17, 0.97) 0%, rgba(16, 25, 28, 0.92) 60%, rgba(13, 16, 20, 0.95) 100%),
    url("/assets/images/backpic/back-2.png") center / cover no-repeat;
  color: var(--c-dark-text);
  padding: 74px 0 64px;
  overflow: hidden;
}

.page-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, var(--c-primary) 0%, var(--c-accent) 200%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 52px;
  align-items: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--c-accent);
  margin-bottom: 18px;
}

.hero-eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--c-accent);
  display: inline-block;
}

.hero-title {
  font-size: clamp(34px, 5vw, 58px);
  font-weight: 800;
  line-height: 1.18;
  color: #fff;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero-title em {
  font-style: normal;
  color: var(--c-primary);
}

.hero-desc {
  color: rgba(242, 244, 247, 0.78);
  font-size: 17px;
  line-height: 1.8;
  max-width: 580px;
  margin-bottom: 28px;
}

.hero-note {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 26px;
}

.hero-note li {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(242, 244, 247, 0.7);
}

.hero-note li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-accent);
  flex-shrink: 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 26px;
}

/* snapshot panel */
.project-snapshot {
  background: #12161B;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 12px 20px 18px;
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.22);
}

.snap-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-block: 14px 12px;
  color: #fff;
  font-weight: 700;
}

.snap-head span:last-child {
  font-size: 12px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.4);
}

.snap-list {
  display: flex;
  flex-direction: column;
}

.snap-row {
  display: grid;
  grid-template-columns: 50px 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 15px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.snap-row:last-child {
  border-bottom: none;
}

.snap-code {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: rgba(255, 255, 255, 0.3);
  font-variant-numeric: tabular-nums;
}

.snap-name {
  font-size: 14px;
  color: rgba(242, 244, 247, 0.9);
  font-weight: 600;
  line-height: 1.45;
}

.snap-time {
  display: inline-flex;
  font-size: 12px;
  line-height: 1;
  background: rgba(29, 191, 174, 0.14);
  color: #50DDCE;
  border-radius: 999px;
  padding: 7px 11px;
  font-variant-numeric: tabular-nums;
}

/* sections generic */
.section {
  padding: 84px 0;
}

.section-head {
  position: relative;
  max-width: 760px;
  margin-bottom: 44px;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--c-primary);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.section-kicker::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--c-primary);
  display: inline-block;
}

.section-title {
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 800;
  line-height: 1.35;
  color: var(--c-text);
  letter-spacing: -0.01em;
}

.section-sub {
  color: var(--c-muted);
  font-size: 16px;
  margin-top: 14px;
  line-height: 1.8;
}

/* delivery */
.delivery-section {
  background: var(--c-bg);
}

.delivery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.delivery-card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
}

.delivery-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.delivery-media {
  position: relative;
  height: 188px;
  overflow: hidden;
  background: #DCE0E3;
}

.delivery-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.delivery-card:hover .delivery-media img {
  transform: scale(1.04);
}

.delivery-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(10, 13, 17, 0.2) 0%, rgba(10, 13, 17, 0) 40%);
  pointer-events: none;
}

.delivery-body {
  padding: 26px 28px 6px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.delivery-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
}

.delivery-num {
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
  color: rgba(21, 24, 28, 0.08);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.03em;
}

.delivery-card:hover .delivery-num {
  color: rgba(246, 72, 31, 0.32);
}

.delivery-title {
  font-size: 22px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--c-text);
}

.delivery-text {
  color: var(--c-muted);
  font-size: 15px;
  line-height: 1.8;
  margin-top: 2px;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 4px 12px;
  border-radius: 999px;
  background: #F2F3F4;
  color: var(--c-muted);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.2;
  white-space: nowrap;
}

.delivery-foot {
  border-top: 1px solid var(--c-border);
  margin-top: 24px;
  padding: 15px 28px 16px;
  color: var(--c-muted);
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.delivery-foot strong {
  color: var(--c-text);
  font-weight: 700;
}

/* scenes */
.scene-section {
  background: #fff;
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}

.scene-list {
  display: flex;
  flex-direction: column;
}

.scene-item {
  display: grid;
  grid-template-columns: 110px 190px 1fr auto;
  align-items: start;
  gap: 28px;
  padding: 32px 8px;
  border-bottom: 1px solid var(--c-border);
  transition: background var(--transition);
}

.scene-item:last-child {
  border-bottom: none;
}

.scene-item:hover {
  background: #FAFAFA;
}

.scene-no {
  font-size: 16px;
  font-weight: 800;
  color: var(--c-primary);
}

.scene-title {
  font-size: 19px;
  font-weight: 800;
  color: var(--c-text);
  line-height: 1.5;
  padding-top: 2px;
}

.scene-desc {
  color: var(--c-muted);
  font-size: 15px;
  line-height: 1.8;
}

.scene-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

/* process */
.process-section {
  background: var(--c-dark);
  color: var(--c-dark-text);
  padding: 88px 0 92px;
  position: relative;
  overflow: hidden;
}

.process-section .section-kicker {
  color: var(--c-accent);
}

.process-section .section-kicker::before {
  background: var(--c-accent);
}

.process-section .section-title {
  color: #fff;
}

.process-section .section-sub {
  color: rgba(242, 244, 247, 0.6);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.process-step {
  padding-top: 24px;
  border-top: 2px solid rgba(255, 255, 255, 0.16);
  position: relative;
}

.process-step::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: 0 0 0 5px rgba(29, 191, 174, 0.12);
}

.process-step .step-id {
  color: var(--c-accent);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
}

.process-step h3 {
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 10px;
}

.process-step p {
  color: rgba(242, 244, 247, 0.55);
  font-size: 14px;
  line-height: 1.75;
}

.process-role {
  display: inline-block;
  margin-top: 14px;
  padding: 5px 10px;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(242, 244, 247, 0.72);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* faq */
.faq-section {
  background: var(--c-bg);
  padding: 82px 0 84px;
}

.faq-wrap {
  max-width: 820px;
  margin-inline: auto;
}

.faq-item {
  border-bottom: 1px solid var(--c-border);
}

.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  gap: 18px;
  padding: 24px 0 22px;
  color: var(--c-text);
  font-size: 17px;
  font-weight: 700;
  transition: color var(--transition);
}

.faq-item summary:hover {
  color: var(--c-primary-dark);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #F1F2F3;
  color: var(--c-muted);
  border-radius: 8px;
  font-size: 22px;
  font-weight: 400;
  line-height: 1;
  transition: background var(--transition), color var(--transition), transform var(--transition);
}

.faq-item[open] .faq-icon {
  color: #fff;
  background: var(--c-primary);
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 0 24px;
  color: var(--c-muted);
  line-height: 1.85;
  font-size: 15px;
}

.faq-answer p {
  padding-left: 0;
}

/* contact */
.contact-section {
  background: #fff;
  padding: 90px 0 96px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: center;
}

.contact-title {
  font-size: clamp(24px, 2.8vw, 34px);
  font-weight: 800;
  line-height: 1.45;
  color: var(--c-text);
  margin-bottom: 18px;
}

.contact-info p {
  color: var(--c-muted);
  line-height: 1.85;
  font-size: 16px;
}

.contact-lines {
  margin-top: 26px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.contact-line {
  display: flex;
  align-items: center;
  gap: 14px;
}

.contact-line .dot {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: #FDEAE5;
  color: var(--c-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  flex-shrink: 0;
}

.contact-line span {
  font-size: 15px;
}

.contact-line small {
  display: block;
  color: var(--c-muted);
  font-size: 13px;
}

.contact-form-panel {
  background: #F8F9FA;
  border: 1px solid var(--c-border);
  border-radius: 16px;
  padding: 32px;
  box-shadow: var(--shadow-card);
}

.contact-form-panel h3 {
  color: var(--c-text);
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 6px;
}

.contact-form-panel > p {
  color: var(--c-muted);
  font-size: 14px;
  margin-bottom: 22px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field.full {
  grid-column: span 2;
}

.field label {
  font-size: 13px;
  font-weight: 600;
  color: var(--c-muted);
}

.field label i {
  color: var(--c-primary);
  font-style: normal;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: 8px;
  color: var(--c-text);
  font-size: 15px;
  min-height: 48px;
  padding: 0 14px;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.field textarea {
  min-height: 118px;
  resize: vertical;
  padding: 13px 14px;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(246, 72, 31, 0.1);
}

.field input.error,
.field textarea.error {
  border-color: #D93A16;
}

.form-footer {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.form-success {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #E5F6F2;
  color: #168678;
  border: 1px solid #B8E9DF;
  padding: 12px 14px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
}

.form-success svg {
  width: 18px;
  height: 18px;
  color: #168678;
  flex-shrink: 0;
}

.form-note {
  color: var(--c-muted);
  font-size: 13px;
}

/* footer */
.site-footer {
  background: var(--c-dark);
  color: rgba(242, 244, 247, 0.72);
  padding: 64px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.site-footer .brand-name {
  color: #fff;
}

.site-footer .brand-name small {
  color: rgba(255, 255, 255, 0.42);
}

.site-footer .brand-mark {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand-text {
  margin-top: 18px;
  color: rgba(242, 244, 247, 0.52);
  font-size: 14px;
  line-height: 1.85;
  max-width: 340px;
}

.footer-col h4 {
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 16px;
  opacity: 0.9;
}

.footer-links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.footer-links a,
.footer-contact-item p {
  color: rgba(242, 244, 247, 0.62);
  font-size: 14px;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--c-primary);
}

.footer-contact-item {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 20px 0 24px;
  color: rgba(242, 244, 247, 0.34);
  font-size: 13px;
}

/* responsive */
@media (max-width: 1200px) {
  .search-field {
    width: 190px;
  }

  .process-steps {
    gap: 16px;
  }

  .scene-item {
    grid-template-columns: 70px 1fr 1.2fr;
    gap: 16px 24px;
  }

  .scene-tags {
    grid-column: 2 / -1;
    justify-content: flex-start;
  }
}

@media (max-width: 1024px) {
  .container {
    padding-inline: 26px;
  }

  .header-inner {
    gap: 14px;
  }

  .search-field {
    width: 164px;
  }

  .nav-menu .nav-link {
    padding: 10px 10px;
    font-size: 14px;
  }

  .hero-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }

  .hero-title {
    font-size: clamp(30px, 4vw, 44px);
  }

  .project-snapshot {
    padding: 10px 16px 14px;
  }

  .delivery-grid {
    grid-template-columns: 1fr 1fr;
  }

  .process-section {
    padding: 70px 0;
  }

  .process-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 28px 22px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .contact-form-panel {
    max-width: 700px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 900px) {
  .nav-menu,
  .nav-actions .search-field,
  .nav-actions .btn {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .header-inner {
    height: 64px;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
    font-size: 16px;
  }

  .brand-name {
    font-size: 18px;
  }

  .nav-link.active::after {
    bottom: 0;
    display: none;
  }

  .hero-grid {
    grid-template-columns: 1fr;
  }

  .page-hero {
    padding: 56px 0;
  }

  .project-snapshot {
    max-width: 680px;
  }

  .delivery-grid {
    grid-template-columns: 1fr;
  }

  .delivery-media {
    height: 200px;
  }

  .section {
    padding: 64px 0;
  }

  .scene-item {
    grid-template-columns: 56px 1fr;
    gap: 10px 18px;
    padding: 24px 0;
  }

  .scene-title {
    font-size: 18px;
  }

  .scene-desc {
    grid-column: 1 / -1;
    grid-row: auto;
  }

  .scene-tags {
    grid-column: 1 / -1;
    justify-content: flex-start;
  }

  .process-steps {
    grid-template-columns: 1fr 1fr;
  }

  .faq-wrap {
    margin: 0;
  }

  .contact-form-panel {
    padding: 24px;
  }
}

@media (max-width: 520px) {
  .container {
    padding-inline: 18px;
  }

  .brand-name small {
    display: none;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-desc {
    font-size: 16px;
  }

  .snap-row {
    grid-template-columns: 40px 1fr;
    gap: 8px;
  }

  .snap-time {
    grid-column: 2;
    justify-self: start;
  }

  .delivery-body,
  .delivery-foot {
    padding-left: 20px;
    padding-right: 20px;
  }

  .section {
    padding: 52px 0;
  }

  .section-title {
    font-size: 26px;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .field.full {
    grid-column: span 1;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* roulang page: category3 */
:root {
  --rp-primary: #F6481F;
  --rp-primary-dark: #D93A16;
  --rp-primary-light: #FF6A3D;
  --rp-accent: #1DBFAE;
  --rp-bg: #F7F8F8;
  --rp-surface: #FFFFFF;
  --rp-line: #E9EBEE;
  --rp-text: #15181C;
  --rp-muted: #5B6068;
  --rp-dark: #0D1014;
  --rp-radius: 12px;
  --rp-radius-sm: 8px;
  --rp-shadow: 0 6px 18px rgba(0, 0, 0, 0.04);
  --rp-shadow-lg: 0 14px 28px rgba(0, 0, 0, 0.09);
  --rp-space: clamp(64px, 8vw, 112px);
}

*, *::before, *::after {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", Arial, sans-serif;
  background: var(--rp-bg);
  color: var(--rp-text);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

:focus-visible {
  outline: 2px solid var(--rp-primary);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 28px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(13, 16, 20, 0.08);
  box-shadow: 0 8px 24px rgba(13, 16, 20, 0.03);
  backdrop-filter: blur(10px);
}

.header-inner {
  display: flex;
  align-items: center;
  min-height: 76px;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--rp-primary) 0%, #FF8A00 100%);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 21px;
  font-weight: 900;
  line-height: 1;
  box-shadow: 0 6px 14px rgba(246, 72, 31, 0.2);
}

.brand-name {
  display: flex;
  flex-direction: column;
  font-size: 20px;
  font-weight: 900;
  line-height: 1.2;
  color: var(--rp-text);
}

.brand-name small {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 1.5px;
  color: #8A9098;
  margin-top: 2px;
}

.nav-menu {
  display: flex;
  flex: 1;
  justify-content: center;
  align-items: center;
  gap: 6px;
}

.nav-link {
  padding: 10px 13px;
  border-radius: 8px;
  font-weight: 500;
  color: #4A5058;
  line-height: 1.4;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.nav-link:hover {
  background: #F1F2F4;
  color: var(--rp-text);
}

.nav-link.active {
  color: var(--rp-text);
  font-weight: 700;
  background: #fff;
  border-bottom-color: var(--rp-primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.search-box {
  position: relative;
  width: 220px;
}

.search-box svg {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: #8A9098;
  pointer-events: none;
}

.search-box input {
  width: 100%;
  height: 42px;
  border: 1px solid var(--rp-line);
  border-radius: 999px;
  background: #F1F2F4;
  padding: 0 14px 0 42px;
  font-size: 14px;
  color: var(--rp-text);
  transition: border-color .2s, background .2s, box-shadow .2s;
}

.search-box input::placeholder {
  color: #9AA0A8;
}

.search-box input:focus {
  background: #fff;
  border-color: var(--rp-primary);
  box-shadow: 0 0 0 3px rgba(246, 72, 31, 0.12);
  outline: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: var(--rp-radius-sm);
  padding: 0 20px;
  height: 44px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: background .2s, color .2s, border-color .2s, box-shadow .2s, transform .15s;
  white-space: nowrap;
  line-height: 1;
}

.btn-primary {
  background: var(--rp-primary);
  color: #fff;
  box-shadow: 0 8px 18px rgba(246, 72, 31, 0.18);
}

.btn-primary:hover {
  background: var(--rp-primary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 12px 22px rgba(246, 72, 31, 0.22);
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 5px 12px rgba(246, 72, 31, 0.18);
}

.btn-outline-light {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.45);
  color: #FFFFFF;
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--rp-muted);
}

.btn-ghost:hover {
  background: #F1F2F4;
  color: var(--rp-text);
}

.btn-header {
  height: 42px;
  padding: 0 18px;
  font-size: 14px;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--rp-line);
  border-radius: 8px;
  cursor: pointer;
  color: var(--rp-text);
}

.menu-toggle svg {
  width: 22px;
  height: 22px;
}

.mobile-menu {
  display: none;
  flex-direction: column;
  padding: 12px 20px 20px;
  background: #fff;
  border-top: 1px solid var(--rp-line);
  box-shadow: 0 18px 30px rgba(13, 16, 20, 0.08);
}

.mobile-menu.show {
  display: flex;
}

.mobile-menu a {
  padding: 13px 6px;
  border-bottom: 1px solid #F1F2F4;
  font-size: 17px;
  font-weight: 500;
}

.mobile-menu a:last-child {
  border-bottom: 0;
}

.mobile-menu .mobile-cta {
  margin-top: 12px;
  background: var(--rp-primary);
  color: #fff;
  border-radius: 8px;
  text-align: center;
  padding: 13px;
  font-weight: 600;
}

.main {
  overflow: clip;
}

.category-hero {
  background: var(--rp-dark);
  color: #fff;
  position: relative;
}

.category-hero-bg {
  background:
    linear-gradient(105deg, rgba(13, 16, 20, 0.96) 0%, rgba(13, 16, 20, 0.84) 58%, rgba(13, 16, 20, 0.6) 100%),
    url("/assets/images/backpic/back-1.png") center / cover no-repeat;
}

.category-hero-inner {
  padding: 92px 0 104px;
  max-width: 860px;
  margin-left: 0;
}

.crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: #A4A9B1;
  margin: 0 0 28px;
}

.crumbs a {
  color: #C9CDD2;
}

.crumbs a:hover {
  color: #fff;
  text-decoration: underline;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.82);
  letter-spacing: .3px;
  margin-bottom: 20px;
}

.hero-kicker::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--rp-accent);
}

.category-hero h1 {
  font-size: clamp(42px, 7vw, 72px);
  line-height: 1.1;
  margin: 0 0 22px;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.category-hero .hero-lead {
  font-size: 18px;
  line-height: 1.9;
  color: #C9CDD2;
  max-width: 720px;
  margin: 0 0 34px;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-ctas .btn {
  height: 50px;
  padding: 0 26px;
  font-size: 16px;
}

.section {
  padding: var(--rp-space) 0;
}

.section-head {
  max-width: 860px;
  margin-bottom: 42px;
}

.section-head .section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--rp-primary);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-head .section-tag::after {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--rp-primary);
  opacity: .5;
}

.section-head h2 {
  font-size: clamp(28px, 3.6vw, 42px);
  margin: 0 0 14px;
  line-height: 1.3;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.section-head p {
  color: var(--rp-muted);
  font-size: 16px;
  max-width: 760px;
  margin: 0;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.metric-card {
  background: #fff;
  border: 1px solid var(--rp-line);
  border-radius: var(--rp-radius);
  padding: 28px;
  box-shadow: var(--rp-shadow);
  position: relative;
  overflow: hidden;
  min-height: 196px;
  transition: transform .25s, box-shadow .25s;
}

.metric-card::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--rp-primary), var(--rp-primary-light));
  opacity: 0;
  transition: opacity .25s;
}

.metric-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--rp-shadow-lg);
}

.metric-card:hover::before {
  opacity: 1;
}

.metric-card-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  color: var(--rp-muted);
  font-size: 14px;
  margin-bottom: 22px;
}

.mini-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 12px;
  line-height: 1.5;
  background: rgba(29, 191, 174, 0.12);
  color: #087A6D;
  white-space: nowrap;
}

.metric-value {
  font-size: 38px;
  line-height: 1.1;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.03em;
  color: var(--rp-text);
}

.metric-value .metric-unit {
  font-size: 16px;
  font-weight: 600;
  color: var(--rp-muted);
  margin-left: 4px;
  letter-spacing: normal;
}

.metric-card-desc {
  margin: 12px 0 0;
  color: #727881;
  font-size: 14px;
  line-height: 1.7;
}

.section-white {
  background: #fff;
}

.ranking-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 36px;
  align-items: start;
}

.ranking-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--rp-line);
}

.rank-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  padding: 26px 4px;
  border-bottom: 1px solid var(--rp-line);
  transition: background .2s, box-shadow .2s;
}

.rank-row:hover {
  background: #FCFCFD;
}

.rank-no {
  font-size: 38px;
  line-height: 1;
  font-weight: 900;
  color: #D7DBDF;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  transition: color .2s;
}

.rank-row:hover .rank-no {
  color: var(--rp-primary);
}

.rank-main h3 {
  margin: 0 0 6px;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.45;
}

.rank-main p {
  margin: 0 0 8px;
  color: var(--rp-muted);
  font-size: 14px;
  line-height: 1.7;
  max-width: 620px;
}

.rank-meta {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 12px;
  color: #878D96;
}

.rank-meta .sample-chip {
  background: #F0F1F3;
  border-radius: 999px;
  padding: 3px 9px;
  color: #5F646C;
}

.rank-value {
  text-align: right;
  min-width: 128px;
}

.rank-value strong {
  display: block;
  font-size: 32px;
  font-weight: 900;
  line-height: 1;
  color: #15181C;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.rank-value strong small {
  font-size: 14px;
  color: var(--rp-muted);
  margin-left: 2px;
  font-weight: 600;
}

.rank-value .trend {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 13px;
  margin-top: 10px;
  color: var(--rp-accent);
  background: rgba(29, 191, 174, 0.1);
  border-radius: 999px;
  padding: 3px 8px;
  line-height: 1.4;
}

.sample-board {
  background: #F9FAFA;
  border: 1px solid var(--rp-line);
  border-radius: var(--rp-radius);
  padding: 28px;
  position: sticky;
  top: 100px;
  box-shadow: var(--rp-shadow);
}

.board-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 18px;
}

.board-title-row h3 {
  margin: 0;
  font-size: 20px;
  font-weight: 800;
}

.sample-label {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  background: rgba(246, 72, 31, 0.09);
  color: #C13417;
  padding: 4px 11px;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.sample-board p {
  margin: 0 0 24px;
  color: var(--rp-muted);
  font-size: 14px;
  line-height: 1.8;
}

.board-field-list {
  border-top: 1px solid var(--rp-line);
  padding-top: 20px;
  display: grid;
  gap: 18px;
}

.board-field-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 14px;
}

.board-field-item span {
  color: var(--rp-muted);
}

.board-field-item strong {
  font-variant-numeric: tabular-nums;
}

.board-range {
  margin-top: 6px;
  width: 100%;
}

.board-range-bars {
  display: grid;
  gap: 12px;
  margin-top: 18px;
  border-top: 1px solid var(--rp-line);
  padding-top: 20px;
}

.bar-row {
  display: grid;
  grid-template-columns: 96px 1fr 44px;
  gap: 12px;
  align-items: center;
  font-size: 13px;
}

.bar-row > span {
  color: #5F646C;
}

.bar-row .bar {
  height: 8px;
  border-radius: 999px;
  background: #ECEEF0;
  overflow: hidden;
}

.bar-row .bar i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--rp-primary), var(--rp-primary-light));
}

.bar-row .bar i.bar-accent {
  background: var(--rp-accent);
}

.bar-row em {
  font-style: normal;
  font-variant-numeric: tabular-nums;
  text-align: right;
  font-weight: 600;
}

.section-flow {
  background: var(--rp-bg);
}

.flow-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 72px;
  align-items: center;
}

.flow-copy h2 {
  font-size: clamp(28px, 3.2vw, 40px);
  line-height: 1.3;
  margin: 0 0 16px;
  font-weight: 800;
}

.flow-copy > p {
  color: var(--rp-muted);
  font-size: 17px;
  max-width: 600px;
  margin: 0 0 32px;
}

.step-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.step-item {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 18px;
  position: relative;
  padding-bottom: 28px;
}

.step-item::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 46px;
  bottom: 6px;
  width: 2px;
  background: #DDE1E4;
}

.step-item:last-child::before {
  display: none;
}

.step-num {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(246, 72, 31, 0.25);
  background: rgba(246, 72, 31, 0.07);
  color: var(--rp-primary);
  font-weight: 800;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.step-text h3 {
  margin: 0 0 5px;
  font-size: 18px;
  font-weight: 700;
}

.step-text p {
  margin: 0;
  color: var(--rp-muted);
  font-size: 14px;
  line-height: 1.7;
}

.flow-visual {
  border-radius: 16px;
  overflow: hidden;
  background: var(--rp-dark);
  box-shadow: var(--rp-shadow-lg);
}

.flow-visual img {
  width: 100%;
  height: 460px;
  object-fit: cover;
}

.flow-visual figcaption {
  background: #fff;
  padding: 18px 22px;
  font-size: 14px;
  color: var(--rp-muted);
  border-top: 1px solid var(--rp-line);
}

.section-faq {
  background: #fff;
}

.faq-grid {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 56px;
  align-items: start;
}

.faq-side .section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--rp-primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 14px;
}

.faq-side .section-tag::after {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--rp-primary);
  opacity: .5;
}

.faq-side h2 {
  margin: 0 0 18px;
  font-size: clamp(28px, 3.2vw, 40px);
  line-height: 1.3;
  font-weight: 800;
}

.faq-side p {
  color: var(--rp-muted);
  margin: 0 0 26px;
  font-size: 16px;
  line-height: 1.8;
}

.faq-list {
  border-top: 1px solid var(--rp-line);
}

.faq-item {
  border-bottom: 1px solid var(--rp-line);
}

.faq-toggle {
  width: 100%;
  background: transparent;
  border: 0;
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  cursor: pointer;
  font-weight: 700;
  font-size: 18px;
  color: var(--rp-text);
  line-height: 1.5;
  transition: color .2s;
}

.faq-toggle:hover {
  color: var(--rp-primary);
}

.faq-icon {
  flex: 0 0 26px;
  width: 26px;
  height: 26px;
  border: 1px solid var(--rp-line);
  border-radius: 50%;
  color: var(--rp-primary);
  font-size: 19px;
  font-weight: 400;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  transition: transform .25s, background .2s, border-color .2s;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--rp-primary);
  border-color: var(--rp-primary);
  color: #fff;
}

.faq-answer {
  display: none;
  padding: 0 40px 26px 0;
  color: var(--rp-muted);
  line-height: 1.8;
  max-width: 760px;
}

.faq-item.active .faq-answer {
  display: block;
  animation: fadeIn .3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.cta-section {
  background: var(--rp-bg);
  padding-bottom: 96px;
}

.cta-shell {
  background: var(--rp-dark);
  border-radius: 20px;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  padding: 58px 56px;
  position: relative;
  overflow: hidden;
  color: #F2F4F7;
}

.cta-shell::before {
  content: "";
  position: absolute;
  top: -150px;
  right: -100px;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(246, 72, 31, 0.45), transparent 68%);
  pointer-events: none;
}

.cta-shell .cta-info {
  position: relative;
  z-index: 1;
}

.cta-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--rp-primary-light);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.cta-info h2 {
  margin: 0 0 20px;
  font-size: clamp(28px, 3.2vw, 42px);
  line-height: 1.3;
  font-weight: 800;
  color: #fff;
}

.cta-info > p {
  color: #B8BDC5;
  font-size: 16px;
  line-height: 1.9;
  margin: 0 0 34px;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 16px;
}

.contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: #C6CBD2;
  font-size: 15px;
}

.contact-list .contact-mark {
  flex: 0 0 24px;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--rp-primary-light);
}

.cta-form-card {
  background: #fff;
  border-radius: 16px;
  padding: 30px;
  position: relative;
  z-index: 2;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.18);
  color: var(--rp-text);
}

.cta-form-card h3 {
  margin: 0 0 6px;
  font-size: 22px;
  font-weight: 800;
}

.cta-form-card .form-intro {
  margin: 0 0 24px;
  color: var(--rp-muted);
  font-size: 14px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  margin-bottom: 7px;
  color: #4D5259;
  font-size: 14px;
  font-weight: 600;
}

.cta-form-card input,
.cta-form-card select,
.cta-form-card textarea {
  width: 100%;
  background: #F7F8F8;
  border: 1px solid var(--rp-line);
  border-radius: var(--rp-radius-sm);
  height: 48px;
  padding: 0 14px;
  font-size: 15px;
  color: var(--rp-text);
  transition: border-color .2s, background .2s, box-shadow .2s;
}

.cta-form-card textarea {
  height: 108px;
  padding: 12px 14px;
  resize: vertical;
  line-height: 1.7;
}

.cta-form-card input:focus,
.cta-form-card select:focus,
.cta-form-card textarea:focus {
  outline: none;
  background: #fff;
  border-color: var(--rp-primary);
  box-shadow: 0 0 0 3px rgba(246, 72, 31, 0.1);
}

.cta-form-card .input-error {
  border-color: var(--rp-primary) !important;
}

.field-error {
  display: none;
  color: var(--rp-primary);
  font-size: 12px;
  margin-top: 5px;
}

.form-success {
  display: none;
  background: #ECF8F5;
  border: 1px solid rgba(29, 191, 174, 0.35);
  color: #087A6D;
  border-radius: 12px;
  padding: 24px;
  font-size: 15px;
  line-height: 1.8;
}

.form-success strong {
  display: block;
  margin-bottom: 4px;
  color: #0B6B5E;
}

.form-submit {
  width: 100%;
  margin-top: 8px;
}

.site-footer {
  background: #0A0D10;
  color: #C6CBD2;
  padding: 68px 0 0;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 1fr 1.1fr;
  gap: 44px;
  padding-bottom: 48px;
}

.footer-brand .brand {
  margin-bottom: 22px;
}

.footer-brand .brand-name {
  color: #fff;
}

.footer-brand .brand-name small {
  color: #7C828C;
}

.footer-brand-text {
  margin: 20px 0 0;
  color: #9AA0A8;
  font-size: 14px;
  line-height: 1.9;
  max-width: 360px;
}

.footer-col h4 {
  margin: 0 0 20px;
  color: #fff;
  font-size: 16px;
  font-weight: 700;
}

.footer-col .brand {
  margin-bottom: 16px;
}

.footer-links {
  display: grid;
  gap: 10px;
}

.footer-links a {
  color: #9AA0A8;
  line-height: 1.6;
}

.footer-links a:hover {
  color: #fff;
  text-decoration: underline;
}

.footer-contact-item p {
  margin: 0 0 10px;
  color: #9AA0A8;
  line-height: 1.8;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: #7F858D;
  font-size: 13px;
}

@media (max-width: 1180px) {
  .container {
    padding: 0 24px;
  }

  .nav-menu {
    gap: 2px;
  }

  .search-box {
    width: 180px;
  }

  .header-inner {
    gap: 16px;
  }
}

@media (max-width: 1024px) {
  .metric-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .ranking-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .sample-board {
    position: static;
  }

  .flow-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .flow-visual img {
    height: 380px;
  }

  .faq-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .cta-shell {
    grid-template-columns: 1fr;
    padding: 40px;
    gap: 40px;
  }
}

@media (max-width: 920px) {
  .nav-menu {
    display: none;
  }

  .header-actions .search-box,
  .header-actions .btn-login {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .header-actions {
    margin-left: auto;
  }

  .category-hero-inner {
    padding: 68px 0 80px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    min-height: 68px;
  }

  .category-hero-inner {
    padding-bottom: 72px;
  }

  .category-hero h1 {
    font-size: 42px;
  }

  .category-hero .hero-lead {
    font-size: 16px;
  }

  .section {
    padding: 58px 0;
  }

  .rank-row {
    grid-template-columns: 54px minmax(0, 1fr);
    row-gap: 10px;
  }

  .rank-no {
    font-size: 30px;
  }

  .rank-value {
    grid-column: 2 / 3;
    text-align: left;
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 14px;
  }

  .rank-value strong {
    font-size: 26px;
  }

  .rank-value .trend {
    margin-top: 0;
  }

  .flow-visual img {
    height: auto;
  }

  .cta-section {
    padding-bottom: 56px;
  }

  .cta-shell {
    padding: 30px 22px;
    gap: 32px;
  }

  .cta-form-card {
    padding: 22px 18px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }

  .brand-name {
    font-size: 18px;
  }

  .brand-name small {
    letter-spacing: .5px;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
    font-size: 18px;
    border-radius: 8px;
  }

  .category-hero h1 {
    font-size: 36px;
  }

  .hero-ctas .btn {
    height: 48px;
    font-size: 15px;
    width: 100%;
  }

  .metric-grid {
    grid-template-columns: 1fr;
    margin-top: 12px;
  }

  .section-head h2 {
    font-size: 28px;
  }

  .rank-row {
    padding: 20px 0;
  }

  .rank-main h3 {
    font-size: 17px;
  }

  .rank-value {
    flex-wrap: wrap;
    gap: 10px;
  }

  .bar-row {
    grid-template-columns: 76px 1fr 40px;
    font-size: 12px;
  }

  .cta-info h2 {
    font-size: 26px;
  }

  .faq-toggle {
    font-size: 16px;
    padding: 20px 0;
  }

  .faq-answer {
    padding-right: 0;
  }
}