/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --bg-0:#060A12;
  --bg-1:#0B1220;
  --bg-2:#111B2B;
  --glass:rgba(255,255,255,.045);
  --brand:#1FE0A6;
  --brand-strong:#14C08C;
  --brand-soft:rgba(31,224,166,.14);
  --accent:#FF9E2C;
  --text-1:#E9F1FA;
  --text-2:#93A4BC;
  --text-3:#5E6E85;
  --ok:#38D39F;
  --err:#FF5D6C;
  --border:rgba(255,255,255,.08);
  --divider:rgba(255,255,255,.06);
  --r-lg:14px;
  --r-md:10px;
  --r-pill:999px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --sb-w:232px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  background:var(--bg-0);
  color:var(--text-1);
  padding-bottom:80px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease);}
ul,ol{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{margin:0;font-weight:650;letter-spacing:-.01em;line-height:1.3;color:var(--text-1);}
p{margin:0;}
button{cursor:pointer;border:0;background:none;font:inherit;color:inherit;}
input,textarea,select{font:inherit;color:inherit;}
::selection{background:var(--brand-soft);color:#fff;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--brand);outline-offset:2px;box-shadow:0 0 0 4px rgba(31,224,166,.18);}
section[id],div[id]{scroll-margin-top:76px;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 布局容器 ============ */
.content{margin-left:var(--sb-w);}
.container{max-width:1160px;margin:0 auto;padding:0 32px;}
.section{padding:96px 0;position:relative;}
.section--alt{background:var(--bg-1);border-top:1px solid var(--divider);border-bottom:1px solid var(--divider);}

/* ============ 侧栏导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sb-w);
  background:#04070D;border-right:1px solid var(--divider);
  display:flex;flex-direction:column;z-index:80;
  transition:transform .3s var(--ease);
}
.sb-logo{
  height:72px;display:flex;align-items:center;gap:10px;
  padding:0 18px;border-bottom:1px solid var(--divider);flex:0 0 auto;
}
.mark{
  width:30px;height:30px;flex:0 0 30px;border-radius:9px;
  background:linear-gradient(135deg,var(--brand),#0C8C68);
  position:relative;box-shadow:0 6px 18px rgba(31,224,166,.32);
}
.mark::before{
  content:"";position:absolute;inset:8px 9px 8px 8px;
  border:2px solid rgba(4,7,13,.85);border-left:0;border-radius:0 6px 6px 0;
}
.mark::after{
  content:"";position:absolute;left:8px;top:50%;width:12px;height:2px;
  background:rgba(4,7,13,.85);transform:translateY(-50%);
}
.sb-logo-text{
  font-size:14.5px;font-weight:650;line-height:1.35;color:var(--text-1);letter-spacing:.01em;
}
.sb-nav{flex:1 1 auto;overflow-y:auto;padding:18px 12px;}
.sb-label{
  font-size:11px;letter-spacing:.14em;color:var(--text-3);
  padding:14px 10px 8px;margin:0;
}
.sb-item{
  display:flex;align-items:center;gap:10px;height:42px;padding:0 12px;
  border-radius:var(--r-md);font-size:14.5px;color:var(--text-2);
  position:relative;margin-bottom:2px;
}
.sb-item i{font-size:15px;width:18px;text-align:center;color:var(--text-3);transition:color .2s var(--ease);}
.sb-item:hover{background:rgba(255,255,255,.05);color:var(--text-1);}
.sb-item:hover i{color:var(--brand);}
.sb-item.is-active{background:var(--brand-soft);color:var(--text-1);}
.sb-item.is-active i{color:var(--brand);}
.sb-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand);box-shadow:0 0 12px rgba(31,224,166,.7);
}
.sb-foot{padding:14px 14px 18px;flex:0 0 auto;border-top:1px solid var(--divider);}
.sb-cta{
  background:var(--glass);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:16px;backdrop-filter:blur(14px);
}
.sb-cta-t{font-size:14px;font-weight:650;margin-bottom:6px;}
.sb-cta-d{font-size:12.5px;line-height:1.7;color:var(--text-3);margin-bottom:12px;}
.sb-overlay{
  position:fixed;inset:0;background:rgba(4,7,13,.66);backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s;z-index:70;
}
.sb-overlay.is-show{opacity:1;visibility:visible;}

/* ============ 顶部栏（移动端） ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:75;
  background:rgba(4,7,13,.94);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--divider);
  align-items:center;gap:12px;padding:0 14px;
}
.burger{width:36px;height:36px;display:flex;flex-direction:column;justify-content:center;gap:5px;padding:0 8px;border-radius:var(--r-md);}
.burger span{display:block;height:2px;border-radius:2px;background:var(--text-1);transition:transform .25s var(--ease),opacity .25s;}
.burger:hover span{background:var(--brand);}
.topbar-brand{flex:1 1 auto;font-size:14px;font-weight:650;line-height:1.3;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-md);
  font-size:15px;font-weight:650;letter-spacing:.01em;
  transition:transform .18s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:var(--brand);color:#04160F;
  box-shadow:0 8px 24px rgba(31,224,166,.28);
}
.btn-primary:hover{background:#35E9B4;box-shadow:0 12px 32px rgba(31,224,166,.38);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;border:1px solid rgba(255,255,255,.16);color:var(--text-1);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);}
.btn-sm{height:38px;padding:0 16px;font-size:13.5px;}
.btn-xs{height:32px;padding:0 12px;font-size:12.5px;border-radius:8px;}
.btn-block{width:100%;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:13.5px;font-weight:650;
}
.link-more i{transition:transform .22s var(--ease);font-size:12px;}
.link-more:hover i{transform:translateX(3px);}
.text-btn{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);
  font-size:14px;font-weight:650;
}
.text-btn i{font-size:12px;transition:transform .22s var(--ease);}
.text-btn:hover i{transform:translateX(3px);}

/* ============ 板块标题组 ============ */
.sec-head{margin-bottom:40px;max-width:720px;}
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--accent);
  margin-bottom:14px;font-variant-numeric:tabular-nums;
}
.sec-tag::before{content:"";width:18px;height:1px;background:var(--accent);opacity:.7;}
.sec-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;margin-bottom:12px;}
.sec-sub{color:var(--text-2);font-size:15px;line-height:1.85;max-width:640px;}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:110px 0 96px;}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero-bg::after{content:"";position:absolute;inset:0;background:rgba(6,10,18,.78);}
.hero-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.032) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.032) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
}
.hero-glow{
  position:absolute;top:-24%;left:26%;width:760px;height:560px;pointer-events:none;
  background:radial-gradient(circle,rgba(31,224,166,.2),rgba(31,224,166,0) 66%);
}
.hero .container{position:relative;z-index:2;}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
  border-radius:var(--r-pill);border:1px solid rgba(31,224,166,.32);
  background:rgba(31,224,166,.08);color:var(--brand);
  font-size:12px;letter-spacing:.06em;margin-bottom:22px;
}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px var(--brand);}
h1.hero-title{
  font-size:clamp(32px,4.6vw,54px);line-height:1.2;letter-spacing:-.015em;margin-bottom:20px;
}
h1.hero-title em{
  font-style:normal;
  background:linear-gradient(100deg,var(--brand),#7CF3CC 60%,var(--brand-strong));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  border-bottom:2px solid rgba(31,224,166,.4);
}
.hero-sub{font-size:16.5px;line-height:1.85;color:var(--text-2);max-width:560px;margin-bottom:32px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:36px;}
.hero-facts{display:flex;gap:14px;flex-wrap:wrap;}
.fact{
  background:var(--glass);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:12px 18px;backdrop-filter:blur(14px);min-width:130px;
}
.fact b{display:block;font-size:20px;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.4;}
.fact span{font-size:12.5px;color:var(--text-3);letter-spacing:.02em;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;border-radius:var(--r-lg);border:1px solid var(--border);
  box-shadow:0 24px 60px rgba(0,0,0,.55);position:relative;z-index:2;
}
.hero-visual::before{
  content:"";position:absolute;right:-16px;top:-16px;width:120px;height:120px;
  border-radius:20px;background:linear-gradient(135deg,rgba(31,224,166,.5),rgba(255,158,44,.2));
  filter:blur(26px);z-index:1;
}

/* ============ 能力区（交错双列） ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split + .split{margin-top:72px;}
.split--rev .split-media{order:2;}
.split-media img{
  width:100%;border-radius:var(--r-lg);border:1px solid var(--border);
  box-shadow:var(--shadow);transition:transform .35s var(--ease),border-color .3s var(--ease);
}
.split-media img:hover{transform:scale(1.02);border-color:rgba(31,224,166,.35);}
.split-body h3{font-size:20px;margin-bottom:14px;line-height:1.45;}
.split-body > p{color:var(--text-2);font-size:15px;margin-bottom:20px;}
.check-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;color:var(--text-2);padding:9px 0;border-bottom:1px solid var(--divider);
}
.check-list li:last-child{border-bottom:0;}
.check-list i{color:var(--brand);font-size:13px;margin-top:8px;flex:0 0 auto;}

/* ============ 演示区 ============ */
.demo-frame{
  background:var(--glass);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:36px;backdrop-filter:blur(14px);box-shadow:var(--shadow);
}
.demo-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:32px;}
.demo-step{position:relative;padding-top:16px;border-top:1px solid var(--border);}
.demo-step::before{content:"";position:absolute;left:0;top:-1px;width:36px;height:2px;background:var(--brand);box-shadow:0 0 12px rgba(31,224,166,.7);}
.demo-idx{display:block;font-size:12px;letter-spacing:.14em;color:var(--accent);margin-bottom:10px;font-variant-numeric:tabular-nums;}
.demo-step h3{font-size:16px;margin-bottom:8px;}
.demo-step p{font-size:13.5px;line-height:1.8;color:var(--text-3);}
.demo-shot{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--border);}
.demo-shot img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.demo-shot:hover img{transform:scale(1.02);}
.demo-note{
  display:flex;align-items:center;gap:10px;margin-top:18px;
  font-size:13.5px;color:var(--text-3);
}
.demo-note i{color:var(--accent);}

/* ============ 数据区 ============ */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--border);border-radius:var(--r-lg);
  background:var(--glass);backdrop-filter:blur(14px);overflow:hidden;
}
.metric{padding:30px 24px;border-right:1px solid var(--divider);}
.metric:last-child{border-right:0;}
.metric b{
  display:block;font-size:32px;line-height:1.2;color:var(--brand);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.metric b small{font-size:15px;font-weight:400;color:var(--text-2);margin-left:4px;}
.metric span{display:block;font-size:13px;color:var(--text-3);margin-top:8px;line-height:1.7;}
.env-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.env-chip{
  display:inline-flex;align-items:center;gap:8px;height:36px;padding:0 16px;
  border-radius:var(--r-pill);border:1px solid var(--border);
  font-size:13px;color:var(--text-3);transition:all .25s var(--ease);
}
.env-chip i{font-size:13px;}
.env-chip:hover{color:var(--text-1);border-color:rgba(31,224,166,.35);background:rgba(255,255,255,.04);}

/* ============ 方案区（不对称双栏） ============ */
.plan-grid{display:grid;grid-template-columns:62% 38%;gap:20px;align-items:stretch;}
.plan-main{
  background:var(--glass);border:1px solid rgba(31,224,166,.26);border-radius:var(--r-lg);
  padding:36px;position:relative;overflow:hidden;backdrop-filter:blur(14px);box-shadow:var(--shadow);
}
.plan-main::before{content:"";position:absolute;left:0;top:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(31,224,166,.9),transparent);}
.plan-tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand);font-size:12px;letter-spacing:.06em;margin-bottom:18px;
}
.plan-main h3{font-size:24px;margin-bottom:12px;}
.plan-main > p{color:var(--text-2);font-size:15px;margin-bottom:22px;}
.plan-list li{
  display:flex;gap:12px;align-items:flex-start;padding:12px 0;
  border-bottom:1px solid var(--divider);font-size:14.5px;color:var(--text-2);
}
.plan-list li:last-child{border-bottom:0;}
.plan-list i{color:var(--brand);font-size:13px;margin-top:8px;}
.plan-side{
  background:var(--bg-2);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:30px;display:flex;flex-direction:column;
}
.plan-side h3{font-size:18px;margin-bottom:12px;}
.plan-side > p{color:var(--text-3);font-size:14px;flex:1 1 auto;margin-bottom:22px;}
.plan-side .meta-line{
  display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);padding:8px 0;
  border-top:1px solid var(--divider);
}
.plan-side .meta-line i{color:var(--accent);width:16px;}

/* ============ 内容动态 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.news-card{
  position:relative;display:flex;flex-direction:column;
  background:var(--glass);border:1px solid var(--border);border-radius:var(--r-lg);
  overflow:hidden;backdrop-filter:blur(14px);
  transition:transform .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.news-card:hover{transform:translateY(-3px);border-color:rgba(31,224,166,.35);box-shadow:0 16px 40px rgba(0,0,0,.45);}
.news-card::after{
  content:"";position:absolute;left:0;top:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,224,166,.85),transparent);
  opacity:0;transition:opacity .28s var(--ease);
}
.news-card:hover::after{opacity:1;}
.news-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2);}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.news-card:hover .news-cover img{transform:scale(1.04);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto;}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-pill);border:1px solid rgba(255,158,44,.4);
  color:var(--accent);font-size:12px;letter-spacing:.02em;
}
.news-date{font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.news-body h3{
  font-size:16.5px;line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  font-size:13.5px;line-height:1.8;color:var(--text-2);flex:1 1 auto;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;padding:64px 24px;border:1px dashed var(--border);border-radius:var(--r-lg);
  background:var(--glass);text-align:center;
}
.empty-state i{font-size:28px;color:var(--text-3);}
.empty-state p{color:var(--text-3);font-size:14px;}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--divider);}
.faq-item{border-bottom:1px solid var(--divider);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;gap:16px;text-align:left;
  padding:22px 0 22px 16px;position:relative;font-size:16px;font-weight:650;line-height:1.55;
  transition:color .22s var(--ease);
}
.faq-q::before{
  content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;border-radius:3px;
  background:transparent;transition:background .25s var(--ease);
}
.faq-item.is-open .faq-q::before{background:var(--brand);box-shadow:0 0 12px rgba(31,224,166,.6);}
.faq-q:hover{color:var(--brand);}
.faq-ind{
  margin-left:auto;flex:0 0 auto;width:20px;height:20px;position:relative;margin-top:6px;
  transition:transform .3s var(--ease);
}
.faq-ind::before,.faq-ind::after{
  content:"";position:absolute;background:var(--text-2);border-radius:2px;
  transition:background .25s var(--ease);
}
.faq-ind::before{left:0;top:9px;width:20px;height:2px;}
.faq-ind::after{left:9px;top:0;width:2px;height:20px;}
.faq-item.is-open .faq-ind{transform:rotate(90deg);}
.faq-item.is-open .faq-ind::before,.faq-item.is-open .faq-ind::after{background:var(--accent);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s var(--ease);}
.faq-a p{
  font-size:15px;line-height:1.8;color:var(--text-2);
  padding:0 44px 20px 16px;
}

/* ============ CTA + 表单 ============ */
.cta-wrap{
  background:var(--glass);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:44px;backdrop-filter:blur(14px);box-shadow:var(--shadow);
  display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start;
  position:relative;overflow:hidden;
}
.cta-wrap::before{content:"";position:absolute;right:-100px;top:-120px;width:340px;height:340px;background:radial-gradient(circle,rgba(31,224,166,.16),transparent 66%);}
.cta-copy{position:relative;z-index:2;}
.cta-copy h2{font-size:clamp(24px,2.6vw,30px);margin-bottom:14px;}
.cta-copy p{color:var(--text-2);font-size:15px;margin-bottom:26px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.form-card{position:relative;z-index:2;display:flex;flex-direction:column;gap:16px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:13px;color:var(--text-2);letter-spacing:.02em;}
.field input,.field textarea{
  width:100%;background:rgba(255,255,255,.04);border:1px solid var(--border);
  border-radius:var(--r-md);padding:12px 14px;font-size:14.5px;color:var(--text-1);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:rgba(31,224,166,.05);
  box-shadow:0 0 0 4px rgba(31,224,166,.14);
}
.field textarea{resize:vertical;min-height:88px;}
.form-hint{font-size:12.5px;color:var(--text-3);line-height:1.7;}

/* ============ 页脚 ============ */
.site-footer{border-top:1px solid var(--divider);background:#04070D;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .mark{width:26px;height:26px;flex:0 0 26px;border-radius:8px;}
.footer-brand span{font-size:15px;font-weight:650;line-height:1.35;}
.footer-desc{font-size:13.5px;line-height:1.85;color:var(--text-3);max-width:300px;}
.footer-col h4{font-size:14px;margin-bottom:16px;color:var(--text-1);letter-spacing:.02em;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:13.5px;color:var(--text-3);}
.footer-col a:hover{color:var(--brand);}
.footer-contact li{display:flex;gap:10px;font-size:13.5px;color:var(--text-3);margin-bottom:10px;align-items:flex-start;}
.footer-contact i{color:var(--accent);width:16px;margin-top:5px;font-size:13px;}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--divider);padding:22px 0;
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);border-bottom:1px solid transparent;}
.footer-bottom a:hover{color:var(--brand);border-bottom-color:var(--brand);}

/* ============ 浮动元素 ============ */
.float-cta{
  position:fixed;right:32px;bottom:88px;z-index:65;
  display:inline-flex;align-items:center;gap:10px;height:48px;padding:0 20px 0 16px;
  border-radius:var(--r-pill);background:var(--brand);color:#04160F;
  font-size:14px;font-weight:650;box-shadow:0 10px 30px rgba(31,224,166,.32);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s,box-shadow .25s;
}
.float-cta.is-show{opacity:1;visibility:visible;transform:none;}
.float-cta:hover{box-shadow:0 14px 36px rgba(31,224,166,.45);}
.float-cta i{font-size:12px;transition:transform .22s var(--ease);}
.float-cta:hover i{transform:translateX(3px);}
.to-top{
  position:fixed;right:32px;bottom:24px;z-index:64;
  width:44px;height:44px;border-radius:var(--r-md);
  background:var(--bg-2);border:1px solid var(--border);color:var(--text-2);
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s,border-color .22s,color .22s;
}
.to-top.is-show{opacity:1;visibility:visible;transform:none;}
.to-top:hover{border-color:var(--brand);color:var(--brand);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 26px;}
  .hero-inner{gap:40px;}
  .split{gap:40px;}
}
@media (max-width:1023px){
  .sidebar{transform:translateX(-100%);width:284px;}
  .sidebar.is-open{transform:none;}
  .content{margin-left:0;padding-top:60px;}
  .topbar{display:flex;}
  .hero{padding:64px 0 72px;}
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero-visual{order:-1;max-width:560px;}
  .section{padding:72px 0;}
  .demo-steps{grid-template-columns:repeat(2,1fr);}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .metric:nth-child(2){border-right:0;}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--divider);}
  .plan-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .cta-wrap{grid-template-columns:1fr;gap:32px;padding:34px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .split{grid-template-columns:1fr;gap:28px;}
  .split--rev .split-media{order:0;}
}
@media (max-width:767px){
  body{padding-bottom:84px;font-size:15.5px;}
  .container{padding:0 18px;}
  .section{padding:60px 0;}
  .sec-head{margin-bottom:30px;}
  h1.hero-title{font-size:clamp(28px,8vw,36px);}
  .hero-sub{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .hero-facts{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
  .fact{min-width:0;padding:10px 14px;}
  .demo-frame{padding:22px;}
  .demo-steps{grid-template-columns:1fr;gap:16px;}
  .metrics{grid-template-columns:1fr;}
  .metric{border-right:0;border-bottom:1px solid var(--divider);padding:22px 20px;}
  .metric:last-child{border-bottom:0;}
  .news-grid{grid-template-columns:1fr;}
  .plan-main,.plan-side{padding:24px;}
  .faq-q{font-size:15px;padding:18px 0 18px 14px;}
  .faq-a p{padding:0 20px 18px 14px;font-size:14.5px;}
  .cta-wrap{padding:26px;border-radius:var(--r-lg);}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .footer-desc{max-width:none;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .float-cta{
    left:0;right:0;bottom:0;height:64px;border-radius:0;justify-content:center;
    box-shadow:0 -6px 24px rgba(0,0,0,.4);
  }
  .to-top{right:16px;bottom:78px;width:40px;height:40px;}
}
@media (max-width:519px){
  .hero-facts{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .section{padding:52px 0;}
}

/* roulang page: article */
:root{
  --bg-0:#060A12;
  --bg-1:#0B1220;
  --bg-2:#111B2B;
  --brand:#1FE0A6;
  --brand-strong:#14C08C;
  --brand-soft:rgba(31,224,166,.14);
  --accent:#FF9E2C;
  --text-1:#E9F1FA;
  --text-2:#93A4BC;
  --text-3:#5E6E85;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.06);
  --glass:rgba(255,255,255,.045);
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --sb-w:232px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--text-1);
  background:var(--bg-0);
  background-image:radial-gradient(900px 420px at 78% -8%,rgba(31,224,166,.13),transparent 62%),
                   radial-gradient(700px 360px at 8% 4%,rgba(255,158,44,.07),transparent 60%);
  background-attachment:fixed;
  padding-bottom:80px;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{font-weight:650;letter-spacing:-.01em;margin:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 32px;}

/* ---------- App shell ---------- */
.app{display:block;min-height:100vh;}
.sb{
  position:fixed;left:0;top:0;bottom:0;width:var(--sb-w);
  background:var(--bg-1);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  z-index:60;
}
.sb-logo{
  height:72px;flex:0 0 72px;display:flex;align-items:center;gap:10px;
  padding:0 18px;border-bottom:1px solid var(--line);
}
.sb-logo .mark{
  width:26px;height:26px;border-radius:8px;flex:0 0 26px;position:relative;
  background:linear-gradient(135deg,var(--brand),var(--brand-strong));
  box-shadow:0 0 18px rgba(31,224,166,.45);
}
.sb-logo .mark::after{
  content:"";position:absolute;left:7px;top:7px;width:12px;height:12px;border-radius:3px;
  background:rgba(6,10,18,.86);
}
.sb-logo .txt{
  font-size:14.5px;line-height:1.3;font-weight:650;color:#fff;letter-spacing:.01em;
}
.sb-nav{padding:18px 12px;display:flex;flex-direction:column;gap:4px;overflow-y:auto;}
.sb-label{
  font-size:11.5px;letter-spacing:.08em;color:var(--text-3);
  padding:12px 10px 6px;margin:0;
}
.sb-item{
  display:flex;align-items:center;gap:10px;
  height:42px;padding:0 10px;border-radius:var(--radius-sm);
  font-size:14.5px;color:var(--text-2);
  border-left:3px solid transparent;
  transition:background .2s,color .2s,border-color .2s;
}
.sb-item i{width:18px;font-size:15px;text-align:center;color:var(--text-3);transition:color .2s;}
.sb-item:hover{background:rgba(255,255,255,.05);color:var(--text-1);}
.sb-item:hover i{color:var(--brand);}
.sb-item.is-active{
  background:rgba(31,224,166,.10);color:var(--text-1);border-left-color:var(--brand);
}
.sb-item.is-active i{color:var(--brand);}
.sb-cta{
  margin:auto 12px 16px;padding:18px;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  backdrop-filter:blur(14px);box-shadow:var(--shadow);
}
.sb-cta strong{display:block;font-size:14.5px;color:#fff;margin-bottom:6px;}
.sb-cta p{font-size:12.5px;line-height:1.7;color:var(--text-2);margin-bottom:14px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:var(--radius-sm);
  padding:11px 18px;font-size:14.5px;cursor:pointer;
  transition:transform .18s,box-shadow .18s,background .2s,color .2s,border-color .2s;
}
.btn-primary{
  background:var(--brand);color:#04140E;font-weight:650;
  box-shadow:0 8px 24px rgba(31,224,166,.28);
}
.btn-primary:hover{background:#2FF0B4;box-shadow:0 12px 30px rgba(31,224,166,.4);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;color:var(--text-1);border-color:rgba(255,255,255,.16);
}
.btn-ghost:hover{border-color:var(--brand);color:#fff;}
.btn-block{width:100%;}

.app-main{margin-left:var(--sb-w);min-height:100vh;display:flex;flex-direction:column;}
.topbar{
  display:none;position:sticky;top:0;height:60px;align-items:center;gap:12px;
  padding:0 16px;background:rgba(11,18,32,.94);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);z-index:50;
}
.topbar .mark{
  width:22px;height:22px;border-radius:7px;position:relative;flex:0 0 22px;
  background:linear-gradient(135deg,var(--brand),var(--brand-strong));
}
.topbar .mark::after{content:"";position:absolute;left:6px;top:6px;width:10px;height:10px;border-radius:3px;background:rgba(6,10,18,.86);}
.topbar .txt{font-size:14px;font-weight:650;color:#fff;line-height:1.25;}
.burger{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  background:rgba(255,255,255,.04);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;color:var(--text-1);
}
.topbar .tb-spacer{margin-left:auto;}
.sb-mask{display:none;}

/* ---------- Article ---------- */
.page{padding:44px 0 0;}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);margin-bottom:26px;
}
.crumb a{color:var(--text-2);transition:color .2s;}
.crumb a:hover{color:var(--brand);}
.crumb i{font-size:10px;color:var(--text-3);}
.crumb .now{color:var(--text-3);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

.article-head{border-bottom:1px solid var(--line-2);padding-bottom:28px;margin-bottom:40px;}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.06em;color:var(--brand);
  border:1px solid rgba(31,224,166,.32);background:var(--brand-soft);
  border-radius:999px;padding:5px 12px;margin-bottom:18px;
}
.article-head h1{
  font-size:clamp(28px,3.6vw,42px);line-height:1.28;letter-spacing:-.01em;
  max-width:900px;color:#fff;
}
.article-head h1 .hl{
  background:linear-gradient(100deg,var(--brand),#7CF3D0);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  margin-top:20px;font-size:13.5px;color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.meta span{display:inline-flex;align-items:center;gap:7px;}
.meta i{color:var(--accent);font-size:12.5px;}
.meta .bar{width:1px;height:12px;background:var(--line);display:inline-block;}

.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:48px;align-items:start;}
.article-body{
  max-width:760px;font-size:16px;line-height:1.85;color:var(--text-1);
  overflow-wrap:break-word;
}
.article-body>p{margin:0 0 20px;}
.article-body h2{
  position:relative;font-size:clamp(21px,2.4vw,26px);line-height:1.4;
  margin:40px 0 16px;padding-left:16px;color:#fff;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px rgba(31,224,166,.5);
}
.article-body h3{font-size:20px;line-height:1.45;margin:28px 0 12px;color:#fff;}
.article-body h4{font-size:17px;margin:24px 0 10px;color:#fff;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:#63F6CB;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:24px;}
.article-body ul li{list-style:disc;}
.article-body ol li{list-style:decimal;}
.article-body li{margin:0 0 8px;line-height:1.9;}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;color:var(--text-2);
  background:var(--glass);border-left:3px solid var(--brand);
  border-radius:0 var(--radius) var(--radius) 0;
  backdrop-filter:blur(14px);box-shadow:var(--shadow);
}
.article-body blockquote p:last-child{margin:0;}
.article-body img{
  border-radius:12px;border:1px solid var(--line);margin:24px auto;
}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;
  background:rgba(255,255,255,.07);padding:2px 6px;border-radius:6px;
}
.article-body pre{
  background:var(--bg-0);border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;overflow:auto;margin:24px 0;
}
.article-body pre code{background:none;padding:0;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.article-body th,.article-body td{padding:10px 12px;border-bottom:1px solid var(--line-2);text-align:left;}
.article-body th{color:#fff;background:rgba(255,255,255,.04);}
.article-body hr{border:0;border-top:1px solid var(--line-2);margin:32px 0;}

.toc-wrap{position:sticky;top:32px;}
.toc-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 12px 14px;backdrop-filter:blur(14px);box-shadow:var(--shadow);
}
.toc-card h4{
  font-size:12px;letter-spacing:.08em;color:var(--text-3);
  padding:0 10px 10px;margin-bottom:6px;border-bottom:1px solid var(--line-2);
}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:flex;gap:8px;align-items:flex-start;
  font-size:13.5px;line-height:1.6;color:var(--text-2);
  padding:7px 10px;border-left:2px solid transparent;
  border-radius:0 8px 8px 0;transition:color .2s,background .2s,border-color .2s;
}
.toc-list a .n{
  color:var(--text-3);font-size:12px;font-variant-numeric:tabular-nums;
  min-width:16px;padding-top:1px;
}
.toc-list a.lv3{padding-left:26px;font-size:13px;color:var(--text-3);}
.toc-list a:hover{color:#fff;background:rgba(255,255,255,.05);}
.toc-list a.is-active{
  color:#fff;border-left-color:var(--brand);background:rgba(31,224,166,.10);
  box-shadow:inset 0 0 14px rgba(31,224,166,.10);
}
.toc-list a.is-active .n{color:var(--brand);}

.empty-state{
  border:1px dashed rgba(255,255,255,.16);border-radius:var(--radius);
  padding:56px 24px;text-align:center;background:rgba(255,255,255,.03);
}
.empty-state i{font-size:30px;color:var(--accent);}
.empty-state h2{font-size:20px;margin:16px 0 8px;color:#fff;}
.empty-state p{color:var(--text-2);font-size:14.5px;margin-bottom:20px;}

.section{margin-top:64px;}
.section-head{margin-bottom:26px;}
.section-head .idx{
  display:inline-block;font-size:12px;letter-spacing:.1em;color:var(--accent);
  font-variant-numeric:tabular-nums;margin-bottom:8px;
}
.section-head h2{font-size:clamp(20px,2.2vw,26px);color:#fff;line-height:1.35;}
.section-head p{color:var(--text-2);font-size:14.5px;margin-top:8px;max-width:640px;}

.tags{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;letter-spacing:.03em;color:var(--text-2);
  border:1px solid var(--line);border-radius:999px;padding:6px 13px;
  background:rgba(255,255,255,.03);transition:border-color .2s,color .2s;
}
.tag:hover{border-color:rgba(31,224,166,.4);color:var(--text-1);}
.tag i{color:var(--accent);font-size:11px;}

.related{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.card{
  position:relative;display:flex;flex-direction:column;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;backdrop-filter:blur(14px);box-shadow:var(--shadow);
  transition:transform .22s,border-color .22s;
}
.card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:transparent;transition:background .22s;
}
.card:hover{transform:translateY(-3px);border-color:rgba(31,224,166,.35);}
.card:hover::before{background:var(--brand);}
.card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg-2);}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s;}
.card:hover .thumb img{transform:scale(1.03);}
.card .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card .row{display:flex;align-items:center;justify-content:space-between;gap:10px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.04em;
  color:var(--accent);border:1px solid rgba(255,158,44,.35);
  background:rgba(255,158,44,.08);border-radius:999px;padding:4px 11px;
}
.card .time{font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.card h3{font-size:17px;line-height:1.5;color:#fff;}
.card p{font-size:14px;line-height:1.75;color:var(--text-2);}
.card .more{
  margin-top:auto;font-size:14px;color:var(--brand);display:inline-flex;align-items:center;gap:6px;
}
.card .more i{transition:transform .2s;}
.card:hover .more i{transform:translateX(3px);}

.panel{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  backdrop-filter:blur(14px);box-shadow:var(--shadow);
  padding:32px;display:grid;grid-template-columns:1.35fr .95fr;gap:36px;
}
.panel h2{font-size:clamp(20px,2.2vw,26px);color:#fff;margin-bottom:12px;}
.panel .lead{color:var(--text-2);font-size:14.5px;line-height:1.85;}
.panel .lead + .lead{margin-top:10px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;background:rgba(255,255,255,.04);border:1px solid var(--line);
  border-radius:var(--radius-sm);padding:11px 13px;font-size:14.5px;line-height:1.6;
  transition:border-color .2s,box-shadow .2s;
}
.field textarea{min-height:104px;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,224,166,.16);
}
.field .hint{font-size:12px;color:var(--text-3);margin-top:7px;}
.formnote{margin-top:12px;font-size:12.5px;color:var(--text-3);min-height:18px;}
.formnote.ok{color:var(--brand);}
.assist{display:flex;flex-direction:column;gap:14px;justify-content:center;}
.assist .item{
  display:flex;gap:12px;align-items:flex-start;
  border-bottom:1px solid var(--line-2);padding-bottom:14px;
}
.assist .item:last-child{border-bottom:0;padding-bottom:0;}
.assist i{color:var(--brand);margin-top:4px;}
.assist strong{display:block;font-size:14.5px;color:#fff;margin-bottom:4px;}
.assist span{font-size:13.5px;color:var(--text-2);line-height:1.7;}

.back-links{display:flex;gap:14px;flex-wrap:wrap;margin-top:26px;}
.link-more{
  display:inline-flex;align-items:center;gap:8px;color:var(--brand);
  font-size:14.5px;padding:10px 16px;border:1px solid rgba(31,224,166,.3);
  border-radius:var(--radius-sm);background:rgba(31,224,166,.06);
  transition:background .2s,border-color .2s;
}
.link-more i{transition:transform .2s;}
.link-more:hover{background:rgba(31,224,166,.14);border-color:var(--brand);}
.link-more:hover i{transform:translateX(3px);}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:96px;border-top:1px solid var(--line);
  background:var(--bg-1);padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:650;color:#fff;}
.footer-brand .mark{
  width:24px;height:24px;border-radius:8px;position:relative;flex:0 0 24px;
  background:linear-gradient(135deg,var(--brand),var(--brand-strong));
  box-shadow:0 0 18px rgba(31,224,166,.45);
}
.footer-brand .mark::after{
  content:"";position:absolute;left:6.5px;top:6.5px;width:11px;height:11px;border-radius:3px;
  background:rgba(6,10,18,.86);
}
.footer-desc{color:var(--text-2);font-size:14px;line-height:1.8;margin-top:16px;max-width:360px;}
.footer-col h4{font-size:14px;color:#fff;letter-spacing:.03em;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:var(--text-2);font-size:14px;transition:color .2s;}
.footer-col a:hover{color:var(--brand);}
.footer-contact li{display:flex;gap:9px;color:var(--text-2);font-size:13.5px;line-height:1.7;}
.footer-contact i{color:var(--brand);margin-top:5px;font-size:12.5px;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-2);
  color:var(--text-3);font-size:13px;
}
.footer-bottom a{color:var(--text-2);transition:color .2s;}
.footer-bottom a:hover{color:var(--brand);text-decoration:underline;}

/* ---------- Floating ---------- */
.float-cta{
  position:fixed;right:32px;bottom:32px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 20px;border-radius:999px;
  background:var(--brand);color:#04140E;font-weight:650;font-size:14.5px;
  box-shadow:0 12px 32px rgba(31,224,166,.32);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s,transform .25s,visibility .25s;
}
.float-cta.is-on{opacity:1;visibility:visible;transform:none;}
.float-cta:hover{background:#2FF0B4;}
.to-top{
  position:fixed;right:32px;bottom:96px;z-index:70;
  width:44px;height:44px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--bg-2);border:1px solid var(--line);color:var(--text-1);
  cursor:pointer;opacity:0;visibility:hidden;
  transition:opacity .25s,visibility .25s,border-color .2s,color .2s;
}
.to-top.is-on{opacity:1;visibility:visible;}
.to-top:hover{border-color:var(--brand);color:var(--brand);}

/* ---------- Breakpoints ---------- */
@media (max-width:1439px){
  .container{padding:0 28px;}
}
@media (max-width:1279px) and (min-width:1024px){
  :root{--sb-w:200px;}
  .container{padding:0 24px;}
  .article-layout{grid-template-columns:minmax(0,1fr) 210px;gap:32px;}
}
@media (max-width:1023px){
  :root{--sb-w:264px;}
  .app-main{margin-left:0;}
  .topbar{display:flex;}
  .sb{transform:translateX(-100%);transition:transform .3s ease;box-shadow:0 0 44px rgba(0,0,0,.6);}
  .sb.is-open{transform:none;}
  .sb-mask{
    display:block;position:fixed;inset:0;z-index:55;
    background:rgba(4,7,13,.68);backdrop-filter:blur(2px);
    opacity:0;visibility:hidden;transition:opacity .25s,visibility .25s;
  }
  .sb-mask.is-open{opacity:1;visibility:visible;}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .toc-wrap{display:none;}
  .related{grid-template-columns:repeat(2,minmax(0,1fr));}
  .panel{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{padding-bottom:96px;}
  .container{padding:0 18px;}
  .page{padding:28px 0 0;}
  .section{margin-top:56px;}
  .article-head{padding-bottom:22px;margin-bottom:30px;}
  .article-head h1{font-size:clamp(23px,6vw,30px);}
  .crumb .now{max-width:180px;}
  .related{grid-template-columns:1fr;}
  .panel{padding:24px 20px;}
  .card .body{padding:18px;}
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;
    justify-content:center;padding:18px 16px;height:64px;
    transform:translateY(100%);
  }
  .float-cta.is-on{transform:none;}
  .to-top{right:16px;bottom:80px;width:40px;height:40px;}
  .btn{width:100%;}
  .link-more{width:100%;justify-content:center;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .site-footer{margin-top:64px;padding:48px 0 24px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:479px){
  .article-head h1{font-size:22px;}
  .section{margin-top:48px;}
  .meta{font-size:12.5px;gap:8px;}
}

/* roulang page: category2 */
:root{
  --bg-0:#060A12;
  --bg-1:#0B1220;
  --bg-2:#111B2B;
  --glass:rgba(255,255,255,.045);
  --brand:#1FE0A6;
  --brand-strong:#14C08C;
  --brand-soft:rgba(31,224,166,.14);
  --accent:#FF9E2C;
  --text-1:#E9F1FA;
  --text-2:#93A4BC;
  --text-3:#5E6E85;
  --ok:#38D39F;
  --err:#FF5D6C;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.06);
  --r:14px;
  --r-sm:10px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --sb:232px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  background:var(--bg-0);
  color:var(--text-1);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  padding-bottom:80px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:12px}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,border-color .2s ease}
a:hover{color:#5CF0C4}
h1,h2,h3,h4{font-weight:650;letter-spacing:-.01em;color:var(--text-1);margin:0}
p{margin:0 0 20px}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{max-width:1160px;margin:0 auto;padding:0 32px}
.num{font-variant-numeric:tabular-nums}

/* ============ 侧栏 App Shell ============ */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sb);
  background:var(--bg-1);
  border-right:1px solid var(--line-2);
  display:flex;flex-direction:column;
  z-index:60;
}
.sb-head{
  height:72px;display:flex;align-items:center;gap:10px;
  padding:0 18px;border-bottom:1px solid var(--line-2);
}
.mark{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  background:linear-gradient(135deg,var(--brand),var(--brand-strong));
  position:relative;box-shadow:0 6px 18px rgba(31,224,166,.3);
}
.mark::after{
  content:"";position:absolute;left:50%;top:50%;width:9px;height:9px;
  transform:translate(-50%,-50%) rotate(45deg);
  border-top:2px solid #05221A;border-right:2px solid #05221A;
}
.sb-brand{font-size:15px;font-weight:650;line-height:1.25;letter-spacing:-.01em}
.sb-scroll{flex:1;overflow-y:auto;padding:18px 12px 12px}
.sb-label{
  font-size:12px;letter-spacing:.08em;color:var(--text-3);
  margin:16px 10px 8px;
}
.sb-label:first-child{margin-top:0}
.sb-item{
  display:flex;align-items:center;gap:10px;
  height:42px;padding:0 12px;border-radius:var(--r-sm);
  color:var(--text-2);font-size:14.5px;
  border-left:3px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.sb-item i{width:18px;font-size:14px;color:var(--text-3);transition:color .2s ease}
.sb-item:hover{background:rgba(255,255,255,.05);color:var(--text-1)}
.sb-item:hover i{color:var(--brand)}
.sb-item.is-active{
  background:var(--brand-soft);color:var(--text-1);
  border-left-color:var(--brand);
}
.sb-item.is-active i{color:var(--brand)}
.sb-cta{
  margin:12px;padding:16px;border-radius:var(--r);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px);
}
.sb-cta h5{margin:0 0 6px;font-size:14px;font-weight:650}
.sb-cta p{margin:0 0 12px;font-size:12.5px;line-height:1.7;color:var(--text-3)}
.sb-cta .btn{width:100%;justify-content:center}

/* ============ 顶栏（移动/平板） ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:70;
  background:rgba(11,18,32,.94);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-2);
  align-items:center;justify-content:space-between;
  padding:0 14px;
}
.topbar .tb-left{display:flex;align-items:center;gap:10px;min-width:0}
.topbar .tb-brand{font-size:13px;font-weight:650;line-height:1.2}
.burger{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--text-1);
}
.mask{
  display:none;position:fixed;inset:0;z-index:80;
  background:rgba(6,10,18,.72);backdrop-filter:blur(2px);
}
.mask.is-open{display:block}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:272px;z-index:90;
  background:var(--bg-1);border-right:1px solid var(--line);
  transform:translateX(-102%);transition:transform .28s ease;
  display:flex;flex-direction:column;
}
.drawer.is-open{transform:translateX(0)}
.drawer .sb-head{padding-right:10px}
.drawer-close{
  margin-left:auto;width:32px;height:32px;border-radius:8px;
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  color:var(--text-2);
}

/* ============ 主内容 ============ */
.main{margin-left:var(--sb);min-height:100vh}

/* ============ 页头 ============ */
.page-head{
  position:relative;padding:64px 0 56px;min-height:320px;
  background-image:
    radial-gradient(900px 340px at 18% -10%,rgba(31,224,166,.16),transparent 60%),
    linear-gradient(rgba(6,10,18,.72),rgba(6,10,18,.72)),
    url("/assets/images/backpic/back-2.webp");
  background-size:cover,cover,cover;
  background-position:center,center,center;
  border-bottom:1px solid var(--line-2);
}
.page-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 85%);
}
.page-head .container{position:relative;z-index:2}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);margin-bottom:20px;
}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--brand)}
.crumb i{font-size:10px;color:var(--text-3)}
.crumb .now{color:var(--text-2)}
.page-head h1{
  font-size:clamp(30px,4vw,46px);line-height:1.22;margin-bottom:16px;
  max-width:840px;
}
.page-head h1 em{
  font-style:normal;
  background:linear-gradient(100deg,var(--brand),#7CF5D2);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-head .lede{
  max-width:700px;color:var(--text-2);font-size:16px;line-height:1.85;margin-bottom:28px;
}
.anchor-nav{display:flex;flex-wrap:wrap;gap:10px}
.anchor-nav a{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 15px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:var(--text-2);font-size:13.5px;
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.anchor-nav a:hover{border-color:rgba(31,224,166,.5);color:var(--text-1);transform:translateY(-2px)}
.anchor-nav a i{font-size:11px;color:var(--brand)}

/* ============ 区块 ============ */
.section{padding:96px 0}
.section.alt{background:var(--bg-1);border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;color:var(--accent);
  border:1px solid rgba(255,158,44,.32);background:rgba(255,158,44,.08);
  padding:4px 12px;border-radius:999px;margin-bottom:16px;
}
.sec-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;margin-bottom:14px}
.sec-head p{color:var(--text-2);margin:0;font-size:15.5px}

/* 错落双列卡片 */
.stagger{display:grid;grid-template-columns:1fr 1fr;gap:24px 24px}
.stagger .card:nth-child(even){transform:translateY(30px)}
.card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r);
  padding:24px;backdrop-filter:blur(14px);box-shadow:var(--shadow);
  position:relative;overflow:hidden;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,224,166,.55),transparent);
  opacity:0;transition:opacity .25s ease;
}
.card:hover{transform:translateY(-3px);border-color:rgba(31,224,166,.35);box-shadow:0 16px 40px rgba(0,0,0,.42)}
.stagger .card:nth-child(even):hover{transform:translateY(27px)}
.card:hover::before{opacity:1}
.card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.card-no{
  font-size:13px;font-weight:650;color:var(--brand);
  font-variant-numeric:tabular-nums;letter-spacing:.06em;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.04em;color:var(--accent);
  border:1px solid rgba(255,158,44,.3);border-radius:999px;padding:3px 10px;
}
.badge.is-soft{color:var(--brand);border-color:rgba(31,224,166,.32)}
.card h3{font-size:17px;line-height:1.45;margin-bottom:10px}
.card p{color:var(--text-2);font-size:14.5px;line-height:1.8;margin:0 0 14px}
.card p:last-child{margin-bottom:0}
.thumb{
  border-radius:12px;overflow:hidden;border:1px solid var(--line);margin-bottom:18px;
}
.thumb img{border-radius:0;width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease}
.card:hover .thumb img{transform:scale(1.02)}
.tick{display:flex;flex-direction:column;gap:9px}
.tick li{display:flex;gap:9px;font-size:14px;color:var(--text-2);line-height:1.7}
.tick i{color:var(--brand);font-size:12px;margin-top:6px}

/* 对比面板 */
.compare{
  display:grid;grid-template-columns:1.55fr 1fr;gap:0;
  border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  background:var(--bg-2);
}
.compare-col{padding:30px}
.compare-col.safe{background:linear-gradient(180deg,rgba(31,224,166,.07),transparent 60%)}
.compare-col.risk{background:rgba(255,93,108,.05);border-left:1px solid var(--line)}
.compare-col h3{font-size:19px;margin-bottom:6px;display:flex;align-items:center;gap:10px}
.compare-col h3 i{font-size:15px}
.compare-col.safe h3 i{color:var(--brand)}
.compare-col.risk h3 i{color:var(--err)}
.compare-col .sub{font-size:13.5px;color:var(--text-3);margin-bottom:20px}
.compare-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 0;border-bottom:1px dashed var(--line-2);
  font-size:14.5px;color:var(--text-2);line-height:1.75;
}
.compare-list li:last-child{border-bottom:0}
.compare-list i{font-size:13px;margin-top:7px;flex:0 0 auto}
.compare-col.safe .compare-list i{color:var(--brand)}
.compare-col.risk .compare-list i{color:var(--err)}

/* 阶段进度 */
.stages{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative}
.stage{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r);
  padding:22px;position:relative;
}
.stage .bar{height:3px;border-radius:99px;background:rgba(255,255,255,.08);margin-bottom:16px;overflow:hidden}
.stage .bar span{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-strong));width:100%}
.stage:nth-child(2) .bar span{width:82%}
.stage:nth-child(3) .bar span{width:64%}
.stage:nth-child(4) .bar span{width:46%}
.stage .idx{
  font-size:26px;font-weight:650;color:var(--brand);line-height:1;
  font-variant-numeric:tabular-nums;margin-bottom:10px;
}
.stage h3{font-size:16px;margin-bottom:8px}
.stage p{font-size:14px;color:var(--text-2);margin:0;line-height:1.75}

/* 指标条 */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--glass);
}
.metric{padding:26px 24px;border-right:1px solid var(--line-2)}
.metric:last-child{border-right:0}
.metric .v{font-size:32px;font-weight:650;color:var(--brand);line-height:1.1;font-variant-numeric:tabular-nums}
.metric .k{font-size:13px;color:var(--text-3);margin-top:8px;line-height:1.6}

/* 表单区 */
.submit-wrap{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;align-items:start}
.form-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r);
  padding:28px;backdrop-filter:blur(14px);box-shadow:var(--shadow);
}
.field{margin-bottom:16px}
.field:last-of-type{margin-bottom:0}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.field input,.field textarea{
  width:100%;background:rgba(255,255,255,.04);border:1px solid var(--line);
  border-radius:var(--r-sm);padding:12px 14px;color:var(--text-1);font-size:14.5px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:118px;resize:vertical;line-height:1.75}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,224,166,.18);
}
.field .hint{font-size:12px;color:var(--text-3);margin-top:6px}
.form-note{font-size:12.5px;color:var(--text-3);margin:14px 0 0;line-height:1.7}
.side-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r);
  padding:26px;
}
.side-card h3{font-size:17px;margin-bottom:14px}
.side-card .tick li{font-size:14px}

/* FAQ */
.faq{border-top:1px solid var(--line-2)}
.faq-item{border-bottom:1px solid var(--line-2);border-left:3px solid transparent;transition:border-color .25s ease}
.faq-item.is-open{border-left-color:var(--brand)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px 22px 16px;text-align:left;font-size:16px;font-weight:650;color:var(--text-1);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand)}
.faq-q .ic{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--text-2);transition:transform .28s ease,color .28s ease,border-color .28s ease;
}
.faq-item.is-open .faq-q .ic{transform:rotate(90deg);color:var(--accent);border-color:rgba(255,158,44,.45)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{
  padding:0 46px 20px 16px;margin:0;font-size:15px;line-height:1.8;color:var(--text-2);
}

/* CTA */
.cta-band{
  border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  background:
    radial-gradient(700px 260px at 12% -30%,rgba(31,224,166,.18),transparent 62%),
    linear-gradient(rgba(6,10,18,.78),rgba(6,10,18,.78)),
    url("/assets/images/backpic/back-3.png");
  background-size:cover;
  padding:52px 44px;
  display:grid;grid-template-columns:1.6fr 1fr;gap:32px;align-items:center;
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:14px}
.cta-band p{color:var(--text-2);margin:0;font-size:15px}
.cta-actions{display:flex;flex-direction:column;gap:14px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 22px;border-radius:var(--r-sm);font-size:14.5px;font-weight:650;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
}
.btn-primary{
  background:var(--brand);color:#04241B;
  box-shadow:0 8px 24px rgba(31,224,166,.28);
}
.btn-primary:hover{background:#3AEBB5;color:#04241B;box-shadow:0 12px 30px rgba(31,224,166,.36)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;color:var(--text-1);border:1px solid rgba(255,255,255,.16);
}
.btn-ghost:hover{border-color:var(--brand);color:#fff}
.btn-link{
  display:inline-flex;align-items:center;gap:8px;color:var(--brand);
  font-size:14.5px;font-weight:650;padding:0;
}
.btn-link i{transition:transform .2s ease}
.btn-link:hover i{transform:translateX(3px)}

/* 浮动 CTA / 回到顶部 */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:55;
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 20px;border-radius:999px;
  background:var(--brand);color:#04241B;font-size:14px;font-weight:650;
  box-shadow:0 12px 32px rgba(31,224,166,.32);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
}
.float-cta.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top{
  position:fixed;right:28px;bottom:96px;z-index:54;
  width:42px;height:42px;border-radius:50%;
  border:1px solid var(--line);background:rgba(17,27,43,.9);
  color:var(--text-2);display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease,border-color .2s ease,color .2s ease;
}
.to-top.is-show{opacity:1;visibility:visible}
.to-top:hover{border-color:var(--brand);color:var(--brand)}
.mobile-bar{display:none}

/* 页脚 */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line-2);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:36px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:15.5px;font-weight:650;margin-bottom:14px}
.footer-desc{color:var(--text-3);font-size:13.5px;line-height:1.8;margin:0;max-width:320px}
.footer-col h4{font-size:14px;margin-bottom:14px;color:var(--text-1)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:var(--text-3);font-size:13.5px}
.footer-col a:hover{color:var(--brand)}
.footer-contact li{display:flex;gap:9px;font-size:13.5px;color:var(--text-3);line-height:1.7}
.footer-contact i{color:var(--brand);font-size:12px;margin-top:6px}
.footer-bottom{
  border-top:1px solid var(--line-2);padding-top:22px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);border-bottom:1px solid transparent}
.footer-bottom a:hover{color:var(--brand);border-bottom-color:var(--brand)}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  .container{max-width:1080px}
}
@media (max-width:1279px){
  :root{--sb:76px}
  .sb-brand,.sb-cta,.sb-label,.sb-item span.t{display:none}
  .sb-item{justify-content:center;padding:0;border-left-width:0}
  .sb-item i{width:auto;font-size:16px}
  .sb-head{justify-content:center;padding:0}
  .sb-item.is-active{background:var(--brand-soft)}
  .sb-item.is-active::before{
    content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;
    background:var(--brand);border-radius:0 3px 3px 0;
  }
  .sb-item{position:relative}
}
@media (max-width:1023px){
  :root{--sb:0px}
  body{padding-top:60px;padding-bottom:76px}
  .sidebar{display:none}
  .topbar{display:flex}
  .main{margin-left:0}
  .stagger{grid-template-columns:1fr}
  .stagger .card:nth-child(even){transform:none}
  .stagger .card:nth-child(even):hover{transform:translateY(-3px)}
  .stages{grid-template-columns:1fr 1fr}
  .metrics{grid-template-columns:1fr 1fr}
  .metric:nth-child(2){border-right:0}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line-2)}
  .compare{grid-template-columns:1fr}
  .compare-col.risk{border-left:0;border-top:1px solid var(--line)}
  .submit-wrap{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr;padding:38px 26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .float-cta{display:none}
  .to-top{bottom:88px;right:16px}
  .mobile-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;height:64px;z-index:58;
    background:rgba(11,18,32,.96);backdrop-filter:blur(12px);
    border-top:1px solid var(--line);
    align-items:center;justify-content:space-between;gap:12px;padding:0 14px;
  }
  .mobile-bar .mb-text{font-size:12.5px;color:var(--text-3);line-height:1.5}
  .mobile-bar .btn{padding:10px 18px;font-size:14px;white-space:nowrap}
  .page-head{padding:40px 0 40px;min-height:auto}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:64px 0}
  .stages{grid-template-columns:1fr}
  .metrics{grid-template-columns:1fr}
  .metric{border-right:0;border-bottom:1px solid var(--line-2)}
  .metric:last-child{border-bottom:0}
  .cta-actions .btn,.anchor-nav a{width:100%;justify-content:center}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .faq-q{font-size:15.5px;padding-left:12px}
  .faq-a p{padding-left:12px;padding-right:12px}
}
@media (max-width:480px){
  body{font-size:15px}
  .section{padding:56px 0}
  .page-head h1{font-size:28px}
  .card{padding:18px}
  .cta-band{padding:30px 20px}
  .form-card,.side-card{padding:20px}
}

/* roulang page: category1 */
:root{
  --bg-0:#060A12;
  --bg-1:#0B1220;
  --bg-2:#111B2B;
  --brand:#1FE0A6;
  --brand-strong:#14C08C;
  --brand-soft:rgba(31,224,166,.14);
  --accent:#FF9E2C;
  --accent-soft:rgba(255,158,44,.14);
  --text-1:#E9F1FA;
  --text-2:#93A4BC;
  --text-3:#5E6E85;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.06);
  --glass:rgba(255,255,255,.045);
  --r-lg:14px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --sb-w:232px;
  --max:1160px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--text-1);
  background:var(--bg-0);
  background-image:radial-gradient(900px 520px at 78% -8%,rgba(31,224,166,.10),transparent 62%),radial-gradient(680px 420px at 4% 12%,rgba(255,158,44,.05),transparent 60%);
  padding-bottom:80px;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;font-weight:650;letter-spacing:-.01em;line-height:1.3;color:var(--text-1)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .22s ease,border-color .22s ease,background .22s ease}
img{max-width:100%;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:none;background:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;box-shadow:0 0 0 4px rgba(31,224,166,.18);border-radius:6px}
.num{font-variant-numeric:tabular-nums}

.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 32px}

/* ---------- 侧栏 App Shell ---------- */
.sb{
  position:fixed;left:0;top:0;bottom:0;width:var(--sb-w);z-index:60;
  background:#080E1A;
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:0 14px 18px;
  transition:width .28s ease,transform .3s ease;
}
.sb-logo{
  height:72px;display:flex;align-items:center;gap:10px;
  padding:0 6px;border-bottom:1px solid var(--line);margin-bottom:16px;
  flex:0 0 auto;
}
.mark{
  width:30px;height:30px;flex:0 0 auto;border-radius:9px;position:relative;
  background:linear-gradient(135deg,var(--brand),var(--brand-strong));
  box-shadow:0 6px 18px rgba(31,224,166,.28);
}
.mark::after{
  content:"";position:absolute;left:50%;top:50%;width:12px;height:12px;
  transform:translate(-50%,-50%);
  border-top:2px solid #04160F;border-right:2px solid #04160F;
  transform:translate(-70%,-50%) rotate(45deg);
}
.mark.sm{width:24px;height:24px;border-radius:7px}
.mark.sm::after{width:9px;height:9px;border-width:2px}
.sb-logo-text{font-size:14.5px;font-weight:650;line-height:1.3;color:var(--text-1)}
.sb-nav{flex:1 1 auto;overflow-y:auto;overflow-x:hidden;padding-right:2px}
.sb-label{
  font-size:12px;letter-spacing:.06em;color:var(--text-3);
  margin:16px 8px 8px;font-weight:600;
}
.sb-label:first-child{margin-top:0}
.sb-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:42px;padding:0 10px;border-radius:10px;margin-bottom:4px;
  font-size:14.5px;color:var(--text-2);border-left:3px solid transparent;
}
.sb-item i{font-size:15px;width:18px;text-align:center;flex:0 0 auto;color:var(--text-3);transition:color .22s ease}
.sb-item:hover{background:rgba(255,255,255,.05);color:var(--text-1)}
.sb-item:hover i{color:var(--brand)}
.sb-item.is-active{
  background:var(--brand-soft);color:var(--text-1);
  border-left-color:var(--brand);
}
.sb-item.is-active i{color:var(--brand)}
.sb-foot{
  flex:0 0 auto;margin-top:14px;padding:14px;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.sb-note{font-size:12.5px;line-height:1.7;color:var(--text-3);margin-top:10px}
.btn-block{display:flex;width:100%;justify-content:center}

/* ---------- 主区 ---------- */
.main{margin-left:var(--sb-w);min-height:100vh;transition:margin-left .28s ease}
section{scroll-margin-top:80px}

/* ---------- 移动顶栏 ---------- */
.topbar{
  display:none;position:fixed;left:0;right:0;top:0;height:60px;z-index:55;
  align-items:center;gap:12px;padding:0 16px;
  background:rgba(8,14,26,.92);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.burger{
  width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--text-1);font-size:16px;background:rgba(255,255,255,.04);
}
.burger:hover{border-color:var(--brand);color:var(--brand)}
.topbar-logo{
  display:flex;align-items:center;gap:8px;flex:1 1 auto;min-width:0;
  font-size:13.5px;font-weight:650;color:var(--text-1);
}
.btn-sm{padding:9px 14px;font-size:13px;border-radius:9px}
.sb-mask{
  display:none;position:fixed;inset:0;z-index:58;
  background:rgba(4,8,14,.66);
  backdrop-filter:blur(2px);-webkit-backdrop-filter:blur(2px);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:0;
  border:1px solid transparent;transition:all .25s ease;white-space:nowrap;
}
.btn i{font-size:13px;transition:transform .25s ease}
.btn-primary{background:var(--brand);color:#04160F;box-shadow:0 8px 24px rgba(31,224,166,.28)}
.btn-primary:hover{background:#2CE9B1;box-shadow:0 12px 32px rgba(31,224,166,.4);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 16px rgba(31,224,166,.24)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.16);color:var(--text-1)}
.btn-ghost:hover{border-color:var(--brand);color:#fff;background:rgba(31,224,166,.06)}
.btn-ghost:active{transform:translateY(1px)}
.btn-text{background:none;padding:8px 0;color:var(--brand);font-weight:600}
.btn-text:hover{color:#2CE9B1}
.btn-text:hover i{transform:translateX(3px)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:76px 0 68px;
  background-image:linear-gradient(115deg,rgba(6,10,18,.94) 8%,rgba(6,10,18,.74) 52%,rgba(6,10,18,.9) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(720px 380px at 82% 6%,rgba(31,224,166,.20),transparent 62%);
}
.hero .container{position:relative;z-index:2}
.crumb{font-size:13px;color:var(--text-3);margin-bottom:20px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.crumb a:hover{color:var(--brand)}
.crumb i{font-size:9px;color:var(--text-3)}
.crumb .cur{color:var(--text-2)}
.hero h1{
  font-size:clamp(32px,4.6vw,50px);line-height:1.2;max-width:840px;
}
.hero h1 em{
  font-style:normal;color:var(--brand);
  background:linear-gradient(90deg,var(--brand),#7CF3CE);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.hero-sub{
  max-width:760px;margin-top:20px;color:var(--text-2);font-size:16.5px;line-height:1.85;
}
.hero-actions{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.hero-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:34px}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.04em;
  border:1px solid var(--line);color:var(--text-2);background:rgba(255,255,255,.035);
}
.tag i{font-size:11px;color:var(--accent)}
.anchor-nav{
  display:flex;gap:8px;flex-wrap:wrap;margin-top:30px;
  padding-top:24px;border-top:1px solid var(--line-2);
}
.anchor-nav a{
  font-size:13.5px;color:var(--text-2);padding:7px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
}
.anchor-nav a:hover{color:var(--brand);border-color:rgba(31,224,166,.35);background:var(--brand-soft)}

/* ---------- 区块与标题组 ---------- */
.sec{padding:96px 0;border-bottom:1px solid var(--line-2)}
.sec:last-of-type{border-bottom:none}
.sec-head{display:flex;flex-direction:column;gap:14px;margin-bottom:48px;max-width:820px}
.sec-meta{display:flex;align-items:center;gap:12px}
.sec-num{
  font-size:12px;font-weight:700;letter-spacing:.08em;
  padding:5px 11px;border-radius:var(--r-pill);
  color:var(--brand);border:1px solid rgba(31,224,166,.34);background:var(--brand-soft);
}
.sec-tag{font-size:12px;letter-spacing:.06em;color:var(--text-3)}
.sec-head h2{font-size:clamp(24px,2.6vw,34px)}
.sec-head p{color:var(--text-2);font-size:16px}

/* ---------- 交替图文 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split + .split{margin-top:72px}
.split.reverse .split-media{order:2}
.media{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  background:var(--bg-2);box-shadow:var(--shadow);
}
.media img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  transition:transform .45s ease,filter .45s ease;
}
.media:hover img{transform:scale(1.02)}
.media:hover{border-color:rgba(31,224,166,.35);box-shadow:0 16px 40px rgba(0,0,0,.45)}
.split-body h3{font-size:20px;margin-bottom:16px}
.split-body p{color:var(--text-2);margin-bottom:18px}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 0;border-bottom:1px dashed var(--line-2);
  color:var(--text-2);font-size:15px;
}
.check-list li:last-child{border-bottom:none}
.check-list i{color:var(--brand);font-size:14px;margin-top:6px;flex:0 0 auto}
.check-list strong{color:var(--text-1);font-weight:600}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;max-width:900px}
.tl-item{position:relative;padding-left:74px;padding-bottom:38px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:23px;top:50px;bottom:-4px;width:1px;
  background:linear-gradient(180deg,rgba(31,224,166,.45),rgba(255,255,255,.06));
}
.tl-item:last-child::before{display:none}
.tl-num{
  position:absolute;left:0;top:0;width:48px;height:48px;border-radius:14px;
  display:grid;place-items:center;font-size:15px;font-weight:700;
  color:var(--brand);background:var(--brand-soft);
  border:1px solid rgba(31,224,166,.34);
  font-variant-numeric:tabular-nums;
}
.tl-item h3{font-size:18px;margin-bottom:10px}
.tl-item p{color:var(--text-2);font-size:15px;max-width:720px}
.tl-note{
  display:inline-flex;align-items:center;gap:8px;margin-top:12px;
  font-size:13px;color:var(--accent);background:var(--accent-soft);
  border:1px solid rgba(255,158,44,.28);border-radius:var(--r-pill);padding:5px 12px;
}

/* ---------- 设备对照卡 ---------- */
.device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:36px}
.device-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;position:relative;overflow:hidden;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.device-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;background:transparent;transition:background .28s ease;
}
.device-card:hover{transform:translateY(-3px);border-color:rgba(31,224,166,.35);box-shadow:0 16px 36px rgba(0,0,0,.4)}
.device-card:hover::before{background:var(--brand)}
.device-card i{font-size:18px;color:var(--brand);margin-bottom:14px;display:block}
.device-card h4{font-size:17px;margin-bottom:10px}
.device-card p{font-size:14.5px;color:var(--text-2)}

/* ---------- 提示处理列表 ---------- */
.issue-list{border-top:1px solid var(--line-2)}
.issue-row{
  display:grid;grid-template-columns:280px 1fr;gap:32px;
  padding:26px 0;border-bottom:1px solid var(--line-2);
  align-items:start;transition:background .25s ease;
}
.issue-row:hover{background:rgba(255,255,255,.022)}
.issue-row h3{font-size:17px;display:flex;align-items:flex-start;gap:10px}
.issue-row h3 i{color:var(--accent);font-size:14px;margin-top:6px}
.issue-row p{color:var(--text-2);font-size:15px}

/* ---------- 表单区 ---------- */
.form-panel{
  display:grid;grid-template-columns:1.15fr .85fr;gap:40px;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:40px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  color:var(--text-1);font-size:15px;transition:border-color .22s ease,box-shadow .22s ease;
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(31,224,166,.16);
}
.field textarea{min-height:112px;resize:vertical;line-height:1.75}
.form-aside h3{font-size:18px;margin-bottom:14px}
.form-aside p{font-size:14.5px;color:var(--text-2);margin-bottom:16px}
.form-aside ul li{
  display:flex;gap:10px;font-size:14px;color:var(--text-2);padding:8px 0;
}
.form-aside ul i{color:var(--brand);font-size:13px;margin-top:6px}
.form-tip{font-size:13px;color:var(--text-3);margin-top:12px}
.form-ok{
  display:none;margin-top:14px;font-size:14px;color:var(--brand);
  background:var(--brand-soft);border:1px solid rgba(31,224,166,.3);
  border-radius:var(--r-btn);padding:10px 14px;
}
.form-ok.is-show{display:block}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line-2)}
.faq-item{
  border-bottom:1px solid var(--line-2);border-left:3px solid transparent;
  padding-left:18px;transition:border-color .25s ease;
}
.faq-item[open]{border-left-color:var(--brand)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:22px 48px 22px 0;font-size:16.5px;font-weight:600;color:var(--text-1);
  transition:color .22s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary::after{
  content:"+";position:absolute;right:10px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--text-3);transition:transform .3s ease,color .3s ease;
}
.faq-item[open] summary::after{content:"−";color:var(--accent);transform:translateY(-50%) rotate(90deg)}
.faq-body{padding:0 40px 20px 0;font-size:15px;line-height:1.8;color:var(--text-2)}

/* ---------- 尾部 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  padding:56px;border:1px solid rgba(31,224,166,.22);
  background-image:linear-gradient(110deg,rgba(8,14,26,.94),rgba(8,14,26,.82)),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:14px;max-width:620px}
.cta-band p{color:var(--text-2);max-width:640px;font-size:15.5px}
.cta-actions{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap}
.cta-facts{display:flex;gap:36px;margin-top:34px;flex-wrap:wrap}
.cta-facts div{border-left:2px solid rgba(31,224,166,.4);padding-left:16px}
.cta-facts b{display:block;font-size:22px;color:var(--brand);font-variant-numeric:tabular-nums;font-weight:700}
.cta-facts span{font-size:13px;color:var(--text-3)}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);background:#080E1A;
  padding:64px 0 32px;margin-top:96px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;font-size:15.5px;font-weight:650;color:var(--text-1)}
.footer-desc{font-size:14px;color:var(--text-3);line-height:1.8;max-width:360px}
.footer-col h4{font-size:14px;color:var(--text-1);margin-bottom:16px;font-weight:650}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:var(--text-2)}
.footer-col ul a:hover{color:var(--brand)}
.footer-contact li{display:flex;gap:10px;font-size:13.5px;color:var(--text-3);line-height:1.7}
.footer-contact i{color:var(--brand);font-size:13px;margin-top:6px;flex:0 0 auto}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line-2);
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-2);border-bottom:1px solid transparent}
.footer-bottom a:hover{color:var(--brand);border-bottom-color:var(--brand)}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:28px;bottom:28px;width:46px;height:46px;z-index:40;
  border-radius:50%;display:grid;place-items:center;
  background:rgba(17,27,43,.9);border:1px solid var(--line);color:var(--text-2);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity .3s ease,transform .3s ease,color .25s ease,border-color .25s ease;
}
.to-top.is-show{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{color:var(--brand);border-color:rgba(31,224,166,.4)}

/* ---------- 响应式 ---------- */
@media (min-width:1280px){
  :root{--sb-w:232px}
}
@media (min-width:1024px) and (max-width:1279px){
  :root{--sb-w:76px;--max:1080px}
  .sb{padding:0 10px 18px}
  .sb-logo{height:96px;flex-direction:column;justify-content:center;gap:8px;padding:0}
  .sb-logo-text{font-size:11px;text-align:center;line-height:1.25;letter-spacing:0}
  .sb-label{font-size:10.5px;text-align:center;margin:14px 0 8px}
  .sb-item{justify-content:center;gap:0;padding:0;font-size:0;border-left-width:3px}
  .sb-item i{font-size:18px;width:auto}
  .sb-foot{padding:10px;text-align:center}
  .sb-foot .btn{font-size:0;padding:12px 0;gap:0}
  .sb-foot .btn i{font-size:14px}
  .sb-note{display:none}
}
@media (max-width:1023px){
  :root{--sb-w:264px}
  .sb{transform:translateX(-100%);box-shadow:0 0 40px rgba(0,0,0,.5);width:264px}
  .sb.is-open{transform:translateX(0)}
  .sb-mask.is-show{display:block}
  .main{margin-left:0;padding-top:60px}
  .topbar{display:flex}
  .sec{padding:72px 0}
  .hero{padding:56px 0 52px}
  .split{grid-template-columns:1fr;gap:28px}
  .split.reverse .split-media{order:0}
  .split + .split{margin-top:56px}
  .device-grid{grid-template-columns:1fr 1fr}
  .form-panel{grid-template-columns:1fr;gap:28px;padding:28px}
  .issue-row{grid-template-columns:1fr;gap:10px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:40px 28px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  body{font-size:15.5px}
  .sec{padding:56px 0}
  .sec-head{margin-bottom:32px}
  .device-grid{grid-template-columns:1fr}
  .hero h1{font-size:clamp(26px,7vw,34px)}
  .hero-actions .btn{width:100%}
  .timeline .tl-item{padding-left:58px}
  .tl-num{width:40px;height:40px;border-radius:12px;font-size:14px}
  .tl-item::before{left:19px;top:42px}
  .faq-item summary{font-size:15.5px;padding:18px 40px 18px 0}
  .faq-body{padding-right:14px}
  .cta-band h2{font-size:21px}
  .cta-facts{gap:22px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-grid > div:first-child{grid-column:1 / -1}
  .to-top{right:16px;bottom:76px}
}
@media (max-width:520px){
  .topbar-logo{font-size:12px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .anchor-nav a{font-size:12.5px;padding:6px 11px}
  .hero-tags{gap:8px}
}