/* roulang page: index */
:root{
  --ink:#0E1512;
  --ink-2:#16211C;
  --paper:#FAFAF7;
  --paper-2:#F1F0EA;
  --primary:#12B37C;
  --primary-deep:#0A7D57;
  --accent:#FF7A45;
  --line:#E4E3DC;
  --text:#1B211E;
  --muted:#6B736E;
  --ink-text:#F2F5F2;
  --ink-muted:#A9B5AE;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-sm:0 1px 2px rgba(14,21,18,.06);
  --sh-md:0 6px 20px -8px rgba(14,21,18,.15);
  --sh-lg:0 18px 48px -20px rgba(14,21,18,.28);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  background:var(--paper);
  color:var(--text);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer;}
h1,h2,h3,h4,p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

.wrap{max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px;}
.section{padding:88px 0;}
.section-sm{padding:64px 0;}
.bg-paper2{background:var(--paper-2);}
.dark-block{background:var(--ink);color:var(--ink-text);}
.hairline{border-top:1px solid var(--line);}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--primary);text-transform:uppercase;
}
.eyebrow::before{content:"";width:20px;height:2px;background:var(--primary);border-radius:2px;}
.dark-block .eyebrow{color:#5FE0B0;}
.dark-block .eyebrow::before{background:#5FE0B0;}

h1{font-size:clamp(30px,4.4vw,52px);line-height:1.22;font-weight:800;letter-spacing:-.01em;}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.35;font-weight:700;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
.lead{font-size:17px;line-height:1.85;color:var(--muted);max-width:760px;}
.dark-block .lead{color:var(--ink-muted);}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head h2{margin-top:14px;}
.sec-head p{margin-top:14px;color:var(--muted);font-size:16px;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:background .18s ease,transform .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
  border:1px solid transparent;cursor:pointer;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px -10px rgba(18,179,124,.85);}
.btn-primary:hover{background:var(--primary-deep);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:rgba(18,179,124,.55);color:var(--primary);}
.btn-ghost:hover{background:rgba(18,179,124,.08);}
.dark-block .btn-ghost,.on-dark .btn-ghost{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.22);color:#fff;}
.dark-block .btn-ghost:hover,.on-dark .btn-ghost:hover{background:rgba(255,255,255,.2);}
.btn-link{color:var(--primary);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px;min-height:44px;}
.btn-link svg{transition:transform .18s ease;}
.btn-link:hover svg{transform:translateX(3px);}

/* 导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:76px;display:flex;align-items:center;
  background:rgba(14,21,18,.42);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.10);
  transition:height .22s ease,background .22s ease,box-shadow .22s ease,border-color .22s ease;
}
@supports not ((backdrop-filter:blur(2px)) or (-webkit-backdrop-filter:blur(2px))){
  .site-header{background:rgba(14,21,18,.88);}
}
.site-header.solid{
  height:64px;
  background:rgba(14,21,18,.95);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  border-bottom-color:rgba(255,255,255,.10);
  box-shadow:0 10px 30px -18px rgba(0,0,0,.75);
}
.nav-inner{width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:flex;flex-direction:column;line-height:1.15;color:#fff;}
.brand-main{font-size:18px;font-weight:700;letter-spacing:.01em;}
.brand-sub{font-size:11px;font-weight:500;letter-spacing:.06em;color:#8FDCC0;margin-top:2px;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;min-height:44px;
  padding:0 14px;font-size:15px;font-weight:500;color:rgba(242,245,242,.82);
  border-radius:8px;transition:color .18s ease,background .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:8px;height:2px;
  background:var(--primary);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover{color:#fff;}
.nav-link.active{color:#5FE0B0;}
.nav-link.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;color:rgba(242,245,242,.85);border:1px solid rgba(255,255,255,.14);
  transition:background .18s ease,color .18s ease;
}
.icon-btn:hover{background:rgba(255,255,255,.12);color:#fff;}
.burger{display:none;}
.header-cta{min-height:42px;padding:0 18px;font-size:14px;}

/* 移动抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(6,10,8,.6);opacity:0;visibility:hidden;transition:opacity .22s ease;z-index:70;}
.drawer-mask.show{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;z-index:80;
  background:var(--ink);border-left:1px solid rgba(255,255,255,.1);
  transform:translateX(100%);transition:transform .26s ease;
  display:flex;flex-direction:column;overflow-y:auto;
}
.drawer.show{transform:translateX(0);}
.drawer-head{padding:20px 22px;border-bottom:1px solid rgba(255,255,255,.1);}
.drawer-nav{padding:6px 0;flex:1;}
.drawer-nav a{
  display:flex;align-items:center;min-height:52px;padding:0 22px;
  font-size:15px;color:rgba(242,245,242,.85);border-bottom:1px solid rgba(255,255,255,.07);
}
.drawer-nav a.active{color:#5FE0B0;}
.drawer-foot{padding:18px 22px 26px;}
.drawer-foot .btn{width:100%;}
.drawer-close{padding:22px;display:flex;justify-content:flex-end;}

/* Hero */
.hero{
  position:relative;overflow:hidden;background:var(--ink);color:var(--ink-text);
  padding:150px 0 92px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(620px 400px at 84% 16%, rgba(18,179,124,.22), transparent 68%),
    radial-gradient(460px 320px at 8% 88%, rgba(255,122,69,.14), transparent 70%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;inset:0;
  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:64px 64px;
  mask-image:linear-gradient(to bottom, rgba(0,0,0,.9), rgba(0,0,0,.15));
  -webkit-mask-image:linear-gradient(to bottom, rgba(0,0,0,.9), rgba(0,0,0,.15));
  pointer-events:none;
}
.hero .wrap{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center;}
.hero-copy{max-width:560px;}
.hero h1{margin-top:20px;color:#fff;}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.8;color:var(--ink-muted);max-width:520px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.trust-row{display:flex;flex-wrap:wrap;gap:20px;margin-top:30px;font-size:13px;color:#B9C4BD;}
.trust-row span{display:inline-flex;align-items:center;gap:8px;}
.trust-row span::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--primary);}
.device-frame{
  position:relative;padding:10px;border-radius:18px;
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.05);
  box-shadow:0 28px 70px -30px rgba(0,0,0,.8);
}
.device-frame img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:10px;}
.float-card{
  position:absolute;left:-18px;bottom:26px;
  background:rgba(22,33,28,.94);border:1px solid rgba(255,255,255,.14);
  border-radius:12px;padding:14px 18px;min-width:186px;
  box-shadow:0 18px 40px -22px rgba(0,0,0,.85);
}
.float-card b{display:block;font-family:ui-monospace,"SF Mono",Menlo,monospace;font-size:22px;font-weight:600;color:#5FE0B0;line-height:1.3;}
.float-card span{font-size:12px;color:#9FADA5;}

/* 卖点带 */
.strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));}
.strip-item{padding:0 32px;border-left:1px solid var(--line);}
.strip-item:first-child{border-left:none;padding-left:0;}
.strip-item:last-child{padding-right:0;}
.strip-num{
  font-family:ui-monospace,"SF Mono",Menlo,monospace;font-size:34px;font-weight:600;
  color:var(--accent);line-height:1;letter-spacing:.02em;
}
.strip-item h3{margin-top:16px;font-size:20px;}
.strip-item p{margin-top:10px;font-size:15px;line-height:1.85;color:var(--muted);}

/* 场景 */
.zig{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:56px;align-items:center;}
.zig.reverse .zig-media{order:2;}
.zig-media{position:relative;}
.zig-media img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-md);}
.zig-tag{
  position:absolute;top:14px;left:14px;background:rgba(14,21,18,.78);color:#fff;
  font-size:12px;font-weight:600;padding:6px 12px;border-radius:999px;
  border:1px solid rgba(255,255,255,.16);
}
.mini-card{
  position:absolute;right:-16px;bottom:-18px;background:#fff;border:1px solid var(--line);
  border-radius:12px;padding:14px 18px;box-shadow:var(--sh-md);min-width:160px;
}
.mini-card b{display:block;font-family:ui-monospace,"SF Mono",Menlo,monospace;font-size:20px;font-weight:600;color:var(--primary);line-height:1.3;}
.mini-card span{font-size:12px;color:var(--muted);}
.check-list{margin-top:22px;display:grid;gap:12px;}
.check-list li{display:flex;gap:12px;font-size:15px;line-height:1.8;color:#39423D;}
.check-list svg{flex:none;margin-top:5px;color:var(--primary);}

/* 内容卡 */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--sh-lg);border-color:rgba(18,179,124,.3);}
.post-thumb{position:relative;overflow:hidden;}
.post-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease;}
.post-card:hover .post-thumb img{transform:scale(1.03);}
.badge{
  position:absolute;top:12px;left:12px;background:var(--primary);color:#fff;
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;
}
.badge.accent{background:var(--accent);}
.post-body{padding:20px 20px 18px;display:flex;flex-direction:column;flex:1;}
.post-body h3{font-size:18px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card:hover .post-body h3{color:var(--primary-deep);}
.post-body p{
  margin-top:10px;font-size:14px;line-height:1.8;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;flex:1;
}
.post-meta{
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.post-meta svg{transition:transform .18s ease;}
.post-card:hover .post-meta svg{transform:translateX(3px);color:var(--primary);}

.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-card);background:#fff;
  padding:48px 24px;text-align:center;
}
.empty-state svg{color:var(--primary);margin:0 auto;}
.empty-state strong{display:block;margin-top:16px;font-size:15px;font-weight:600;}
.empty-state p{margin-top:6px;font-size:13px;color:var(--muted);}
.empty-state .btn{margin-top:18px;}

/* 社会认同 */
.stat-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;border-bottom:1px solid rgba(255,255,255,.1);padding-bottom:40px;}
.stat b{display:block;font-family:ui-monospace,"SF Mono",Menlo,monospace;font-size:clamp(28px,3vw,36px);font-weight:600;color:#5FE0B0;line-height:1.2;}
.stat span{display:block;margin-top:8px;font-size:13px;color:var(--ink-muted);}
.quote-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:44px;}
.quote-card{
  background:var(--ink-2);border:1px solid rgba(255,255,255,.10);border-radius:var(--r-card);
  padding:24px;position:relative;
}
.quote-card::before{content:"";position:absolute;top:0;left:24px;width:36px;height:3px;background:var(--primary);border-radius:0 0 3px 3px;}
.quote-card p{margin-top:16px;font-size:15px;line-height:1.85;color:#DDE4DF;}
.quote-user{display:flex;align-items:center;gap:12px;margin-top:20px;}
.avatar{
  width:36px;height:36px;border-radius:50%;flex:none;
  background:linear-gradient(135deg,rgba(18,179,124,.9),rgba(255,122,69,.8));
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;color:#06251B;
}
.quote-user span{font-size:13px;color:var(--ink-muted);}

/* FAQ */
.faq-list{max-width:880px;display:grid;gap:10px;}
.faq-item{border:1px solid var(--line);border-radius:12px;background:#fff;overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;}
.faq-item.open{border-color:rgba(18,179,124,.4);box-shadow:var(--sh-sm);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;font-size:16px;font-weight:600;line-height:1.6;
  transition:color .18s ease;
}
.faq-q:hover{color:var(--primary-deep);}
.faq-item.open .faq-q{color:var(--primary-deep);}
.faq-q .plus{
  flex:none;width:22px;height:22px;position:relative;margin-top:3px;
  transition:transform .24s ease;
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;background:var(--muted);border-radius:2px;
}
.faq-q .plus::before{left:0;right:0;top:10px;height:2px;}
.faq-q .plus::after{top:0;bottom:0;left:10px;width:2px;}
.faq-item.open .faq-q .plus{transform:rotate(45deg);}
.faq-item.open .faq-q .plus::before,.faq-item.open .faq-q .plus::after{background:var(--primary);}
.faq-body{display:grid;grid-template-rows:0fr;transition:grid-template-rows .24s ease;}
.faq-item.open .faq-body{grid-template-rows:1fr;}
.faq-body>div{overflow:hidden;}
.faq-body p{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--muted);}
.faq-body a{color:var(--primary-deep);font-weight:600;border-bottom:1px solid rgba(10,125,87,.3);}

/* 底部 CTA */
.cta-block{
  background:var(--ink);color:#fff;border-radius:0;
}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;}
.cta-inner h2{color:#fff;max-width:520px;}
.cta-inner p{margin-top:12px;color:var(--ink-muted);font-size:15px;}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;}

/* 页脚 */
.site-footer{background:#080D0A;color:var(--ink-muted);padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:36px;}
.footer-brand .brand-main{color:#fff;font-size:17px;}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.85;max-width:300px;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--ink-muted);transition:color .18s ease;}
.footer-col a:hover{color:#5FE0B0;}
.footer-col p{font-size:14px;line-height:1.85;}
.copyright{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0 30px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#7E8B84;
}

/* 转化条 */
.convert-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:55;
  background:rgba(14,21,18,.97);border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  height:60px;padding:0 16px;color:#fff;
  transform:translateY(120%);opacity:0;
  transition:transform .28s ease,opacity .28s ease;
}
.convert-bar.show{transform:translateY(0);opacity:1;}
.convert-bar span{font-size:13px;color:#B9C4BD;}
.convert-bar .btn{min-height:38px;padding:0 16px;font-size:14px;}

@media (min-width:1024px){
  .convert-bar{
    left:auto;right:28px;bottom:28px;height:auto;border-radius:999px;
    border:1px solid rgba(255,255,255,.14);padding:10px 10px 10px 22px;
    box-shadow:0 22px 50px -24px rgba(0,0,0,.9);max-width:420px;
  }
}

@media (max-width:1023px){
  .wrap{padding-left:24px;padding-right:24px;}
  .section{padding:72px 0;}
  .hero{padding:132px 0 76px;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero-copy{max-width:none;}
  .nav-links{display:none;}
  .burger{display:inline-flex;}
  .header-cta{display:none;}
  .strip{grid-template-columns:1fr;gap:28px;}
  .strip-item{border-left:none;border-top:3px solid rgba(18,179,124,.5);padding:18px 0 0;border-radius:2px;}
  .strip-item:first-child{padding-left:0;}
  .zig{grid-template-columns:1fr;gap:40px;}
  .zig.reverse .zig-media{order:0;}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-row{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  .quote-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .wrap{padding-left:20px;padding-right:20px;}
  .section{padding:56px 0;}
  .hero{padding:118px 0 60px;}
  .hero-sub{font-size:16px;}
  .post-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .site-footer{padding-bottom:72px;}
  .mini-card{right:10px;bottom:-14px;}
  .float-card{left:10px;bottom:14px;}
}
@media (max-width:520px){
  h1{font-size:28px;}
  .hero-cta .btn{width:100%;}
  .stat b{font-size:26px;}
  .trust-row{gap:14px;}
}

/* roulang page: category1 */
:root{
  --ink:#0E1512;
  --ink-2:#16211C;
  --paper:#FAFAF7;
  --paper-2:#F1F0EA;
  --primary:#12B37C;
  --primary-deep:#0A7D57;
  --accent:#FF7A45;
  --line:#E4E3DC;
  --text:#1B211E;
  --muted:#6B736E;
  --dark-text:#F2F5F2;
  --dark-muted:#A9B5AE;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-sm:0 1px 2px rgba(14,21,18,.06);
  --sh-md:0 6px 20px -8px rgba(14,21,18,.15);
  --sh-lg:0 18px 48px -20px rgba(14,21,18,.28);
  --mono:ui-monospace,"SF Mono","Cascadia Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1024px){.wrap{padding:0 32px}}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  height:76px;display:flex;align-items:center;
  background:rgba(14,21,18,.42);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.10);
  transition:height .22s ease,background .22s ease,box-shadow .22s ease;
}
.site-header.scrolled{
  height:64px;background:rgba(14,21,18,.95);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  box-shadow:0 12px 34px -20px rgba(0,0,0,.75);
}
@supports not ((backdrop-filter:blur(2px)) or (-webkit-backdrop-filter:blur(2px))){
  .site-header{background:rgba(14,21,18,.9)}
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%}
.brand{display:flex;flex-direction:column;line-height:1.12}
.brand-main{font-size:18px;font-weight:700;color:var(--dark-text);letter-spacing:0}
.brand-sub{font-size:11px;font-weight:500;letter-spacing:.06em;color:var(--dark-muted)}
.nav-links{display:none;align-items:center;gap:26px}
@media(min-width:900px){.nav-links{display:flex}}
.nav-link{position:relative;font-size:15px;font-weight:500;color:#DDE5E0;padding:8px 0;transition:color .18s ease}
.nav-link::after{content:"";position:absolute;left:0;right:100%;bottom:2px;height:2px;background:var(--primary);transition:right .2s ease}
.nav-link:hover{color:#fff}
.nav-link:hover::after{right:0}
.nav-link.active{color:var(--primary)}
.nav-link.active::after{right:0}
.nav-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:44px;height:44px;border-radius:999px;display:flex;align-items:center;justify-content:center;
  color:#E7EFEA;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);
  transition:background .18s ease,color .18s ease,transform .18s ease;
}
.icon-btn:hover{background:rgba(18,179,124,.22);color:#fff;transform:translateY(-1px)}
.menu-btn{display:flex}
@media(min-width:900px){.menu-btn{display:none}}
.nav-cta{display:none}
@media(min-width:1024px){.nav-cta{display:inline-flex}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 22px -12px rgba(18,179,124,.9)}
.btn-primary:hover{background:var(--primary-deep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--primary-deep);border:1px solid var(--primary)}
.btn-ghost:hover{background:rgba(18,179,124,.08)}
.btn-ghost-dark{background:rgba(255,255,255,.10);color:#fff;border:1px solid rgba(255,255,255,.22)}
.btn-ghost-dark:hover{background:rgba(255,255,255,.18)}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px}
.text-link{color:var(--primary-deep);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:6px}
.text-link::after{content:"→";transition:transform .18s ease}
.text-link:hover::after{transform:translateX(3px)}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;background:var(--ink);color:var(--dark-text);
  padding:132px 0 76px;overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(120% 90% at 20% 0%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(120% 90% at 20% 0%,#000 20%,transparent 78%);
  pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:520px;height:520px;border-radius:999px;
  background:radial-gradient(circle,rgba(18,179,124,.30),transparent 66%);pointer-events:none;
}
.hero-grid{position:relative;z-index:2;display:grid;gap:36px;align-items:center}
@media(min-width:960px){.hero-grid{grid-template-columns:minmax(0,1.05fr) minmax(0,.85fr);gap:52px}}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:rgba(18,179,124,.16);border:1px solid rgba(18,179,124,.42);
  color:#8FE7C5;font-size:13px;font-weight:600;
}
.hero-title{
  margin:18px 0 0;font-size:clamp(30px,4.4vw,50px);line-height:1.22;font-weight:800;letter-spacing:0;
}
.hero-title em{font-style:normal;color:var(--primary)}
.hero-sub{margin-top:16px;max-width:560px;font-size:17px;line-height:1.85;color:var(--dark-muted)}
.hero-cta{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px}
.hero-points{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13px;color:var(--dark-muted)}
.hero-points li{display:flex;align-items:center;gap:8px}
.hero-points li::before{content:"";width:8px;height:8px;border-radius:999px;background:var(--primary);flex:none}
.device-frame{
  position:relative;padding:10px;border-radius:18px;
  background:linear-gradient(180deg,rgba(255,255,255,.12),rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.16);
  box-shadow:0 24px 60px -30px rgba(0,0,0,.85);
}
.device-frame img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:10px}
.float-card{
  position:absolute;left:-14px;bottom:22px;min-width:186px;
  background:rgba(14,21,18,.86);border:1px solid rgba(255,255,255,.16);
  border-radius:12px;padding:12px 14px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.float-card .num{font-family:var(--mono);font-size:22px;font-weight:700;color:var(--accent);line-height:1.2}
.float-card .lab{font-size:12px;color:var(--dark-muted);margin-top:2px}

/* ---------- 通用板块 ---------- */
.section{padding:64px 0}
@media(min-width:768px){.section{padding:76px 0}}
@media(min-width:1024px){.section{padding:92px 0}}
.section-alt{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--primary-deep);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--primary);border-radius:2px}
.section-title{margin-top:12px;font-size:clamp(24px,2.6vw,34px);line-height:1.35;font-weight:700;color:var(--text)}
.section-desc{margin-top:12px;font-size:16px;line-height:1.85;color:var(--muted)}
.head-split{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between}

/* ---------- 导引卡 ---------- */
.guide-grid{margin-top:34px;display:grid;gap:20px}
@media(min-width:640px){.guide-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.guide-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.guide-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 22px;box-shadow:var(--sh-sm);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.guide-card:hover{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:rgba(18,179,124,.4)}
.guide-card .idx{
  font-family:var(--mono);font-size:13px;font-weight:700;color:var(--accent);
  display:inline-block;padding:3px 10px;border-radius:999px;background:rgba(255,122,69,.10);
}
.guide-card h3{margin-top:14px;font-size:17px;font-weight:600;line-height:1.5}
.guide-card p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--muted)}

/* ---------- 时间线 ---------- */
.timeline-layout{display:grid;gap:40px}
@media(min-width:1024px){.timeline-layout{grid-template-columns:minmax(0,1fr) minmax(0,.78fr);gap:56px;align-items:start}}
.timeline{position:relative;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:21px;top:14px;bottom:14px;width:2px;
  background:linear-gradient(180deg,var(--primary),rgba(18,179,124,.14));
}
.tl-item{position:relative;padding-left:68px;padding-bottom:30px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:0;top:0;width:44px;height:44px;border-radius:999px;
  background:#fff;border:2px solid var(--primary);color:var(--primary-deep);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:14px;font-weight:700;box-shadow:var(--sh-sm);
}
.tl-item h3{font-size:18px;font-weight:600;line-height:1.55}
.tl-item p{margin-top:8px;font-size:15px;line-height:1.85;color:var(--muted)}
.tl-note{margin-top:10px;display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;color:var(--primary-deep);background:rgba(18,179,124,.10);
  border:1px solid rgba(18,179,124,.28);
}
.chip-warn{color:#B2451E;background:rgba(255,122,69,.12);border-color:rgba(255,122,69,.34)}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-md);
}
.side-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.side-card .body{padding:22px}
.side-card h3{font-size:18px;font-weight:600}
.check-list{margin-top:14px;display:grid;gap:12px}
.check-list li{display:flex;gap:10px;font-size:15px;line-height:1.8;color:var(--text)}
.check-list li svg{flex:none;margin-top:5px;color:var(--primary)}
.side-card .meta-row{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);
}

/* ---------- 信息条 ---------- */
.info-strip{
  margin-top:30px;display:grid;gap:14px;
}
@media(min-width:768px){.info-strip{grid-template-columns:repeat(2,minmax(0,1fr))}}
.info-item{
  display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:18px 20px;transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.info-item:hover{border-color:rgba(18,179,124,.4);transform:translateY(-2px);box-shadow:var(--sh-sm)}
.info-item .mark{width:6px;height:38px;border-radius:4px;background:var(--accent);flex:none}
.info-item h3{font-size:16px;font-weight:600}
.info-item p{margin-top:6px;font-size:14px;line-height:1.8;color:var(--muted)}

/* ---------- 提示块 ---------- */
.notice{
  margin-top:30px;border-left:4px solid var(--accent);background:rgba(255,122,69,.08);
  border-radius:0 var(--r-card) var(--r-card) 0;padding:20px 22px;
}
.notice h3{font-size:16px;font-weight:600;color:#B2451E}
.notice p{margin-top:8px;font-size:14px;line-height:1.85;color:#5C4B41}

/* ---------- FAQ ---------- */
.faq-wrap{margin-top:32px;display:grid;gap:12px;max-width:900px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item[open]{border-color:rgba(18,179,124,.45);box-shadow:var(--sh-sm)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary-deep)}
.faq-item[open] summary{color:var(--primary-deep)}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:999px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--primary-deep);
  transition:transform .24s ease,background .18s ease,border-color .18s ease,color .18s ease;
}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--primary);border-color:var(--primary);color:#fff}
.faq-body{padding:0 20px 20px;font-size:15px;line-height:1.9;color:var(--muted)}
.faq-body a{color:var(--primary-deep);font-weight:600;border-bottom:1px solid rgba(18,179,124,.4)}

/* ---------- 底部 CTA ---------- */
.cta-band{background:var(--ink);color:var(--dark-text);padding:56px 0}
@media(min-width:1024px){.cta-band{padding:72px 0}}
.cta-inner{display:grid;gap:24px;align-items:center}
@media(min-width:900px){.cta-inner{grid-template-columns:minmax(0,1fr) auto;gap:40px}}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);line-height:1.4;font-weight:700}
.cta-inner p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--dark-muted);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:#0A100D;color:var(--dark-muted);padding:56px 0 24px;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{display:grid;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand .brand-main{font-size:17px}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.85;color:var(--dark-muted);max-width:360px}
.footer-col h4{font-size:14px;font-weight:600;color:#fff}
.footer-col ul{margin-top:14px;display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--dark-muted);transition:color .18s ease}
.footer-col a:hover{color:var(--primary)}
.footer-col p{font-size:14px;line-height:1.85;color:var(--dark-muted);margin-top:14px}
.copyright{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:#7C877F;
}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(6,10,8,.6);opacity:0;visibility:hidden;
  transition:opacity .24s ease,visibility .24s ease;z-index:100;
}
.drawer-mask.show{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);background:var(--ink-2);
  z-index:110;transform:translateX(100%);transition:transform .28s ease;
  display:flex;flex-direction:column;padding:18px 18px 24px;overflow-y:auto;
  border-left:1px solid rgba(255,255,255,.10);
}
.drawer.show{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.10)}
.drawer-close{width:44px;height:44px;border-radius:999px;border:1px solid rgba(255,255,255,.16);color:#E7EFEA;font-size:20px;line-height:1}
.drawer-nav{margin-top:8px;display:grid}
.drawer-link{
  height:52px;display:flex;align-items:center;justify-content:space-between;
  color:#DDE5E0;font-size:15px;font-weight:500;border-bottom:1px solid rgba(255,255,255,.08);
}
.drawer-link.active{color:var(--primary)}
.drawer-cta{margin-top:22px;width:100%}

/* ---------- 吸底转化条 ---------- */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:80;
  display:flex;align-items:center;gap:12px;
  background:rgba(14,21,18,.96);border-top:1px solid rgba(255,255,255,.12);
  padding:10px 16px;transform:translateY(120%);opacity:0;
  transition:transform .3s ease,opacity .3s ease;
}
.sticky-cta.show{transform:translateY(0);opacity:1}
.sticky-cta p{flex:1;font-size:13px;line-height:1.5;color:var(--dark-muted)}
.sticky-close{display:none;width:34px;height:34px;border-radius:999px;border:1px solid rgba(255,255,255,.18);color:#DDE5E0;font-size:16px;line-height:1}
@media(min-width:1024px){
  .sticky-cta{
    left:auto;right:26px;bottom:26px;max-width:430px;border-radius:999px;
    border:1px solid rgba(255,255,255,.14);box-shadow:var(--sh-lg);padding:10px 12px 10px 22px;
  }
  .sticky-close{display:flex;align-items:center;justify-content:center}
}
body{padding-bottom:0}
@media(max-width:1023px){.site-footer{padding-bottom:88px}}

/* roulang page: article */
:root{
  --ink:#0E1512;
  --ink-2:#16211C;
  --paper:#FAFAF7;
  --paper-2:#F1F0EA;
  --primary:#12B37C;
  --primary-deep:#0A7D57;
  --accent:#FF7A45;
  --line:#E4E3DC;
  --line-dark:rgba(255,255,255,.10);
  --text:#1B211E;
  --muted:#6B736E;
  --ink-text:#F2F5F2;
  --ink-muted:#A9B5AE;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-sm:0 1px 2px rgba(14,21,18,.06);
  --sh-md:0 6px 20px -8px rgba(14,21,18,.15);
  --sh-lg:0 18px 48px -20px rgba(14,21,18,.28);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.wrap{padding:0 32px;}}
.section{padding:72px 0;}
@media (max-width:1023px){.section{padding:56px 0;}}
@media (max-width:640px){.section{padding:44px 0;}}
.section-alt{background:var(--paper-2);}
.section-dark{background:var(--ink);color:var(--ink-text);}

/* ============ header ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:76px;
  background:rgba(14,21,18,.42);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line-dark);
  transition:height .22s ease,background .22s ease,box-shadow .22s ease;
}
@supports not ((backdrop-filter:blur(2px)) or (-webkit-backdrop-filter:blur(2px))){
  .site-header{background:rgba(14,21,18,.88);}
}
.site-header.scrolled{
  height:64px;
  background:rgba(14,21,18,.97);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  box-shadow:0 12px 32px -20px rgba(0,0,0,.75);
}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:flex;flex-direction:column;justify-content:center;line-height:1.15;}
.brand-main{font-size:18px;font-weight:700;color:#fff;letter-spacing:0;}
.brand-sub{font-size:11px;font-weight:500;letter-spacing:.06em;color:var(--ink-muted);margin-top:2px;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
  font-size:15px;font-weight:500;color:rgba(242,245,242,.82);border-radius:8px;
  transition:color .18s ease,background .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:center;
  transition:transform .18s ease;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.06);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:#fff;}
.nav-link.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.06);
  color:#fff;cursor:pointer;transition:background .18s ease,border-color .18s ease;
}
.icon-btn:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.26);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-deep);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--primary);color:var(--primary);}
.btn-ghost:hover{background:rgba(18,179,124,.08);}
.btn-on-dark{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.22);color:#fff;}
.btn-on-dark:hover{background:rgba(255,255,255,.18);}
.btn-line{background:#fff;border-color:var(--line);color:var(--text);}
.btn-line:hover{border-color:rgba(18,179,124,.5);color:var(--primary-deep);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-lg{height:52px;padding:0 26px;font-size:16px;}
.burger{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border-radius:10px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.06);
  color:#fff;cursor:pointer;
}
@media (max-width:767px){
  .site-header{height:64px;}
  .nav-links{display:none;}
  .header-actions .btn{display:none;}
  .burger{display:inline-flex;}
}

/* ============ drawer ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(8,12,10,.62);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:71;
  background:var(--ink);border-left:1px solid var(--line-dark);
  transform:translateX(102%);transition:transform .26s ease;
  display:flex;flex-direction:column;padding:18px 18px 22px;overflow-y:auto;
}
.drawer.open{transform:none;}
.drawer-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line-dark);}
.drawer-close{
  width:38px;height:38px;flex:0 0 38px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.06);color:#fff;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;margin:8px 0 20px;}
.drawer-nav a{
  display:flex;align-items:center;height:52px;font-size:16px;color:rgba(242,245,242,.86);
  border-bottom:1px solid rgba(255,255,255,.08);transition:color .18s ease;
}
.drawer-nav a:hover{color:var(--primary);}
.drawer-nav a.active{color:var(--primary);}
.drawer-cta{width:100%;margin-top:auto;}
@media (min-width:768px){.drawer,.drawer-mask{display:none;}}

/* ============ post hero ============ */
.post-hero{position:relative;background:var(--ink);padding:132px 0 62px;overflow:hidden;}
.post-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.26;
}
.post-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(720px 360px at 82% 12%,rgba(18,179,124,.22),transparent 70%),
    linear-gradient(180deg,rgba(14,21,18,.84) 0%,rgba(14,21,18,.95) 100%);
}
.post-hero .wrap{position:relative;z-index:2;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-muted);}
.crumbs a{color:var(--ink-muted);transition:color .18s ease;}
.crumbs a:hover{color:var(--primary);}
.crumbs .sep{color:rgba(255,255,255,.28);}
.crumbs .current{color:rgba(242,245,242,.72);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.post-cat{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--primary);color:#fff;font-size:12px;font-weight:600;letter-spacing:.02em;
}
.post-title{
  margin-top:18px;max-width:900px;
  font-size:clamp(26px,3.4vw,40px);font-weight:800;line-height:1.26;color:#fff;
}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;margin-top:20px;font-size:13px;color:var(--ink-muted);}
.post-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.28);}
.post-meta time{font-family:ui-monospace,"SF Mono",Menlo,monospace;font-size:12.5px;letter-spacing:.02em;}
@media (max-width:767px){.post-hero{padding:104px 0 44px;}}

/* ============ article body ============ */
.article-section{background:var(--paper);padding:56px 0 72px;}
@media (max-width:640px){.article-section{padding:36px 0 52px;}}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:44px;}
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,760px) 200px;justify-content:center;}
}
.article-body{
  max-width:760px;font-size:17px;line-height:1.9;color:var(--text);
  word-break:break-word;overflow-wrap:break-word;
}
.article-body h2{
  font-size:23px;font-weight:700;line-height:1.45;margin:44px 0 16px;
  padding-left:14px;border-left:3px solid var(--primary);color:var(--text);
}
.article-body h3{font-size:19px;font-weight:600;line-height:1.55;margin:30px 0 12px;}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 10px;}
.article-body p{margin:0 0 1.1em;}
.article-body strong{font-weight:700;}
.article-body a{color:var(--primary-deep);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--primary);}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:0;list-style:none;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--primary);
}
.article-body ol{counter-reset:olnum;padding-left:0;}
.article-body ol li{position:relative;padding-left:32px;margin-bottom:10px;counter-increment:olnum;}
.article-body ol li::before{
  content:counter(olnum);position:absolute;left:0;top:.35em;
  width:20px;height:20px;border-radius:6px;background:rgba(18,179,124,.12);color:var(--primary-deep);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
  font-family:ui-monospace,"SF Mono",Menlo,monospace;
}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--primary);
  background:var(--paper-2);border-radius:0 var(--r-img) var(--r-img) 0;color:#3B433F;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);margin:24px auto;box-shadow:var(--sh-sm);}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-body table{
  display:block;width:100%;overflow-x:auto;border-collapse:collapse;
  margin:24px 0;font-size:15px;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.article-body th{background:var(--paper-2);font-weight:600;}
.article-body code{
  background:var(--paper-2);padding:2px 6px;border-radius:6px;
  font-family:ui-monospace,"SF Mono",Menlo,monospace;font-size:14px;
}
.article-body pre{
  background:var(--ink);color:#E7EFEA;padding:16px 18px;border-radius:var(--r-img);
  overflow-x:auto;font-size:14px;line-height:1.7;margin:24px 0;
}
.article-body pre code{background:none;color:inherit;padding:0;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}
.article-body h2:first-child,.article-body h3:first-child{margin-top:0;}

/* toc */
.toc{display:none;}
@media (min-width:1200px){.toc{display:block;}}
.toc-inner{position:sticky;top:96px;font-size:13px;}
.toc-title{font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--muted);text-transform:uppercase;margin-bottom:12px;}
.toc-list{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line);}
.toc-list a{
  display:block;padding:6px 0 6px 14px;margin-left:-1px;border-left:2px solid transparent;
  color:var(--muted);line-height:1.6;transition:color .18s ease,border-color .18s ease;
}
.toc-list a:hover{color:var(--primary-deep);border-left-color:rgba(18,179,124,.5);}
.toc-list a.is-active{color:var(--primary-deep);border-left-color:var(--primary);font-weight:600;}

/* empty state */
.empty-state{
  max-width:760px;margin:0 auto;text-align:center;padding:48px 20px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);
}
.empty-state svg{width:48px;height:48px;margin:0 auto 18px;color:var(--primary);}
.empty-state h2{font-size:19px;font-weight:600;margin-bottom:8px;}
.empty-state p{font-size:13.5px;color:var(--muted);margin-bottom:22px;}

/* ============ article footer blocks ============ */
.post-foot{margin-top:52px;padding-top:32px;border-top:1px solid var(--line);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px;}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 13px;border-radius:999px;
  background:var(--paper-2);border:1px solid var(--line);font-size:12.5px;color:var(--muted);
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.tag:hover{color:var(--primary-deep);border-color:rgba(18,179,124,.45);background:rgba(18,179,124,.06);}
.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:32px;}
.share-label{font-size:13px;color:var(--muted);margin-right:2px;}
.share-btn{
  display:inline-flex;align-items:center;gap:7px;height:38px;padding:0 15px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;font-size:13.5px;color:var(--text);cursor:pointer;
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.share-btn:hover{border-color:rgba(18,179,124,.5);color:var(--primary-deep);background:rgba(18,179,124,.05);}
.share-btn svg{width:15px;height:15px;}
.back-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}

/* related */
.related{margin-top:56px;}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;}
.related-head h2{font-size:22px;font-weight:700;}
.related-head a{font-size:13.5px;color:var(--primary-deep);display:inline-flex;align-items:center;gap:6px;}
.related-head a:hover{color:var(--primary);}
.card-grid{display:grid;gap:22px;grid-template-columns:repeat(3,minmax(0,1fr));}
@media (max-width:1023px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:639px){.card-grid{grid-template-columns:1fr;}}
.post-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-sm);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:rgba(18,179,124,.3);}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--paper-2);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .18s ease;}
.post-card:hover .card-media img{transform:scale(1.03);}
.card-badge{
  position:absolute;top:12px;left:12px;height:24px;padding:0 10px;border-radius:999px;
  display:inline-flex;align-items:center;background:var(--primary);color:#fff;font-size:11.5px;font-weight:600;
}
.card-body{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1;}
.card-body h3{
  font-size:16.5px;font-weight:600;line-height:1.55;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-body p{
  font-size:13.5px;color:var(--muted);line-height:1.75;margin-bottom:14px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--muted);}
.card-meta .arrow{transition:transform .18s ease;color:var(--primary-deep);}
.post-card:hover .card-meta .arrow{transform:translateX(3px);}

/* ============ cta ============ */
.cta-band{background:var(--ink);color:var(--ink-text);padding:64px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;}
.cta-inner h2{font-size:clamp(21px,2.2vw,28px);font-weight:700;color:#fff;line-height:1.4;}
.cta-inner p{margin-top:10px;font-size:14.5px;color:var(--ink-muted);max-width:620px;line-height:1.8;}
.cta-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
.cta-link{font-size:14.5px;color:var(--ink-muted);border-bottom:1px solid rgba(255,255,255,.24);padding-bottom:2px;transition:color .18s ease,border-color .18s ease;}
.cta-link:hover{color:var(--primary);border-color:var(--primary);}

/* ============ sticky cta ============ */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:65;
  display:flex;align-items:center;gap:12px;height:60px;padding:0 16px;
  background:rgba(14,21,18,.97);border-top:1px solid var(--line-dark);color:#fff;
  transform:translateY(120%);opacity:0;visibility:hidden;
  transition:transform .28s ease,opacity .28s ease,visibility .28s ease;
}
.sticky-cta.show{transform:none;opacity:1;visibility:visible;}
.sticky-cta-text{flex:1;font-size:13.5px;line-height:1.4;color:var(--ink-muted);}
.sticky-close{
  width:34px;height:34px;flex:0 0 34px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:999px;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);color:#fff;cursor:pointer;
}
.sticky-close:hover{background:rgba(255,255,255,.16);}
@media (min-width:1024px){
  .sticky-cta{
    left:auto;right:24px;bottom:24px;width:auto;height:auto;
    padding:12px 12px 12px 20px;border-radius:999px;border:1px solid rgba(255,255,255,.14);
    box-shadow:var(--sh-lg);transform:translateY(16px);
  }
  .sticky-cta.show{transform:none;}
  .sticky-cta-text{flex:0 0 auto;max-width:280px;}
}
@media (max-width:767px){
  .site-footer{padding-bottom:64px;}
}

/* ============ footer ============ */
.site-footer{background:#0A100D;color:var(--ink-muted);padding:64px 0 0;border-top:1px solid var(--line-dark);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px;}}
@media (max-width:639px){.footer-grid{grid-template-columns:1fr;gap:28px;}}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.85;max-width:380px;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-col ul{list-style:none;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--ink-muted);transition:color .18s ease;}
.footer-col a:hover{color:var(--primary);}
.footer-col p{font-size:13.5px;line-height:1.85;}
.copyright{
  margin-top:48px;border-top:1px solid var(--line-dark);padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:#7C877F;
}

/* roulang page: category2 */
:root{
    --ink:#0E1512;
    --ink-2:#16211C;
    --paper:#FAFAF7;
    --paper-2:#F1F0EA;
    --primary:#12B37C;
    --primary-deep:#0A7D57;
    --accent:#FF7A45;
    --line:#E4E3DC;
    --text:#1B211E;
    --muted:#6B736E;
    --ink-text:#F2F5F2;
    --ink-muted:#A9B5AE;
    --radius-card:14px;
    --radius-img:12px;
    --radius-btn:10px;
    --shadow-sm:0 1px 2px rgba(14,21,18,.06);
    --shadow-md:0 6px 20px -8px rgba(14,21,18,.15);
    --shadow-lg:0 18px 48px -20px rgba(14,21,18,.28);
    --font-sans:-apple-system,"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
    --font-mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:var(--font-sans);
    background:var(--paper);
    color:var(--text);
    font-size:16px;
    line-height:1.9;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;cursor:pointer;border:0;background:none;}
  h1,h2,h3,h4,p,ul,ol{margin:0;}
  ul{padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

  .wrap{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
  @media (min-width:1024px){.wrap{padding-left:32px;padding-right:32px;}}

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:70;
    background:rgba(14,21,18,.42);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    backdrop-filter:blur(14px) saturate(140%);
    border-bottom:1px solid rgba(255,255,255,.10);
    transition:background .22s ease,box-shadow .22s ease,border-color .22s ease,backdrop-filter .22s ease;
  }
  @supports not ((backdrop-filter:blur(4px)) or (-webkit-backdrop-filter:blur(4px))){
    .site-header{background:rgba(14,21,18,.88);}
  }
  .site-header.scrolled{
    background:rgba(14,21,18,.95);
    -webkit-backdrop-filter:blur(8px);
    backdrop-filter:blur(8px);
    border-bottom-color:rgba(255,255,255,.12);
    box-shadow:0 12px 30px -20px rgba(0,0,0,.7);
  }
  .header-inner{
    display:flex;align-items:center;justify-content:space-between;gap:24px;
    height:76px;transition:height .22s ease;
  }
  .site-header.scrolled .header-inner{height:64px;}
  .brand{display:flex;flex-direction:column;justify-content:center;line-height:1.15;}
  .brand-main{font-size:18px;font-weight:700;color:var(--ink-text);letter-spacing:.01em;}
  .brand-sub{font-size:11px;font-weight:500;letter-spacing:.06em;color:var(--ink-muted);}
  .nav-links{display:none;align-items:center;gap:28px;}
  @media (min-width:900px){.nav-links{display:flex;}}
  .nav-link{
    position:relative;padding:8px 2px;font-size:15px;font-weight:500;
    color:rgba(242,245,242,.86);transition:color .2s ease;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
    background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
  }
  .nav-link:hover{color:#fff;}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{color:var(--primary);}
  .nav-link.active::after{transform:scaleX(1);}
  .header-actions{display:flex;align-items:center;gap:12px;}
  .icon-btn{
    width:44px;height:44px;border-radius:999px;display:flex;align-items:center;justify-content:center;
    color:var(--ink-text);background:rgba(255,255,255,.06);
    border:1px solid rgba(255,255,255,.14);transition:background .2s ease,transform .2s ease;
  }
  .icon-btn:hover{background:rgba(255,255,255,.14);transform:translateY(-1px);}
  .menu-btn{
    width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;
    color:var(--ink-text);border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);
  }
  @media (min-width:900px){.menu-btn{display:none;}}
  .header-cta{display:none;}
  @media (min-width:900px){.header-cta{display:inline-flex;}}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 22px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;letter-spacing:.01em;
    transition:background .18s ease,transform .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
  }
  .btn-sm{height:42px;padding:0 18px;font-size:14px;}
  .btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 22px -12px rgba(18,179,124,.85);}
  .btn-primary:hover{background:var(--primary-deep);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);background:#086a49;}
  .btn-ghost{background:transparent;border:1px solid rgba(18,179,124,.55);color:var(--primary);}
  .btn-ghost:hover{background:rgba(18,179,124,.10);}
  .btn-ghost-light{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);color:#fff;}
  .btn-ghost-light:hover{background:rgba(255,255,255,.18);}
  .btn-outline-dark{background:transparent;border:1px solid var(--line);color:var(--text);}
  .btn-outline-dark:hover{border-color:var(--primary);color:var(--primary);}

  /* ---------- 移动抽屉 ---------- */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(8,12,10,.55);z-index:80;
    opacity:0;pointer-events:none;transition:opacity .24s ease;
  }
  .drawer-mask.open{opacity:1;pointer-events:auto;}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);z-index:90;
    background:var(--ink);border-left:1px solid rgba(255,255,255,.10);
    transform:translateX(100%);transition:transform .28s ease;
    display:flex;flex-direction:column;padding:20px;overflow-y:auto;
  }
  .drawer.open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.10);}
  .drawer-nav{display:flex;flex-direction:column;margin-top:8px;}
  .drawer-link{
    display:flex;align-items:center;min-height:52px;font-size:16px;font-weight:500;
    color:var(--ink-text);border-bottom:1px solid rgba(255,255,255,.10);transition:color .2s ease,padding-left .2s ease;
  }
  .drawer-link:hover{padding-left:6px;}
  .drawer-link.active{color:var(--primary);}
  .drawer-cta{margin-top:auto;width:100%;}
  .drawer-close{width:44px;height:44px;border-radius:10px;color:var(--ink-text);border:1px solid rgba(255,255,255,.16);display:flex;align-items:center;justify-content:center;}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;background:var(--ink);color:var(--ink-text);
    padding-top:132px;padding-bottom:72px;overflow:hidden;
  }
  @media (min-width:768px){.hero{padding-top:156px;padding-bottom:96px;}}
  .hero::before{
    content:"";position:absolute;inset:0;
    background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                     linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
    background-size:64px 64px;pointer-events:none;
  }
  .hero::after{
    content:"";position:absolute;top:-160px;right:-120px;width:620px;height:620px;border-radius:50%;
    background:radial-gradient(circle,rgba(18,179,124,.30),rgba(18,179,124,0) 68%);pointer-events:none;
  }
  .hero-grid{position:relative;z-index:2;display:grid;gap:48px;align-items:center;}
  @media (min-width:1024px){.hero-grid{grid-template-columns:minmax(0,1fr) minmax(0,460px);gap:64px;}}
  .badge{
    display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;
    font-size:13px;font-weight:600;letter-spacing:.02em;
    background:rgba(18,179,124,.16);color:#7EE7BF;border:1px solid rgba(18,179,124,.35);
  }
  .badge-accent{background:rgba(255,122,69,.16);color:#FFB492;border-color:rgba(255,122,69,.35);}
  .hero h1{
    margin-top:20px;font-size:clamp(30px,4.4vw,52px);line-height:1.22;font-weight:800;letter-spacing:0;color:#fff;
  }
  .hero-sub{
    margin-top:18px;max-width:560px;font-size:16px;line-height:1.85;color:var(--ink-muted);
  }
  @media (min-width:768px){.hero-sub{font-size:18px;}}
  .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
  .hero-trust{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:28px;font-size:13px;color:var(--ink-muted);}
  .hero-trust span{display:inline-flex;align-items:center;gap:8px;}
  .hero-trust i{color:var(--primary);font-size:11px;}
  .device-frame{
    position:relative;padding:10px;border-radius:18px;
    border:1px solid rgba(255,255,255,.14);background:rgba(22,33,28,.72);
    box-shadow:0 30px 60px -30px rgba(0,0,0,.85);
  }
  .device-frame img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:10px;}
  .float-card{
    position:absolute;left:-10px;bottom:26px;padding:14px 16px;border-radius:12px;
    background:rgba(14,21,18,.92);border:1px solid rgba(255,255,255,.14);
    box-shadow:0 18px 36px -20px rgba(0,0,0,.8);min-width:172px;
  }
  .float-card b{display:block;font-family:var(--font-mono);font-size:24px;font-weight:600;color:var(--primary);line-height:1.2;}
  .float-card em{font-style:normal;font-size:12px;color:var(--ink-muted);}

  /* ---------- 通用板块 ---------- */
  .section{padding-top:64px;padding-bottom:64px;}
  @media (min-width:768px){.section{padding-top:80px;padding-bottom:80px;}}
  @media (min-width:1280px){.section{padding-top:96px;padding-bottom:96px;}}
  .section-alt{background:var(--paper-2);}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.06em;
    color:var(--primary-deep);text-transform:uppercase;
  }
  .eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--primary);}
  .section h2{
    margin-top:14px;font-size:clamp(24px,2.6vw,34px);line-height:1.35;font-weight:700;letter-spacing:0;
  }
  .section-lead{margin-top:14px;max-width:720px;font-size:16px;line-height:1.9;color:var(--muted);}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;}

  /* ---------- 导引锚点 ---------- */
  .anchor-grid{display:grid;gap:16px;margin-top:36px;}
  @media (min-width:640px){.anchor-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
  @media (min-width:1024px){.anchor-grid{grid-template-columns:repeat(4,minmax(0,1fr));}}
  .anchor-card{
    display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:22px 20px;box-shadow:var(--shadow-sm);
    transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  }
  .anchor-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(18,179,124,.5);}
  .anchor-card i{font-size:18px;color:var(--primary);}
  .anchor-card h3{margin-top:14px;font-size:17px;font-weight:600;}
  .anchor-card p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--muted);}

  /* ---------- 版本对照 ---------- */
  .compare{margin-top:36px;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:#fff;box-shadow:var(--shadow-sm);}
  .compare-head,.compare-row{display:grid;grid-template-columns:1fr;}
  @media (min-width:768px){
    .compare-head,.compare-row{grid-template-columns:1.05fr 1fr 1fr;}
    .compare-head{background:var(--ink);}
  }
  .compare-head{display:none;}
  @media (min-width:768px){.compare-head{display:grid;}}
  .compare-cell{padding:18px 20px;font-size:15px;line-height:1.8;}
  .compare-head .compare-cell{color:var(--ink-text);font-weight:600;font-size:14px;letter-spacing:.02em;}
  .compare-head .compare-cell.col-b{color:var(--primary);}
  .compare-row{border-top:1px solid var(--line);}
  .compare-row:hover{background:#FCFCF9;}
  .compare-cell.row-title{font-weight:600;font-size:15px;color:var(--text);}
  .compare-cell.col-a,.compare-cell.col-b{color:var(--muted);font-size:15px;}
  @media (max-width:767px){
    .compare-row{
      display:block;border:1px solid var(--line);border-radius:var(--radius-card);
      background:#fff;margin:14px;box-shadow:var(--shadow-sm);
    }
    .compare{border:0;background:transparent;box-shadow:none;}
    .compare-cell{padding:14px 18px;border-top:1px solid var(--line);}
    .compare-cell.row-title{border-top:0;background:var(--paper-2);border-radius:var(--radius-card) var(--radius-card) 0 0;}
    .compare-cell.col-a::before,.compare-cell.col-b::before{
      content:attr(data-label);display:block;font-size:12px;font-weight:600;color:var(--text);margin-bottom:4px;
    }
    .compare-cell.col-b{color:var(--primary-deep);}
  }
  .tick{color:var(--primary);margin-right:6px;}
  .cross{color:var(--accent);margin-right:6px;}

  /* ---------- 特性网格 ---------- */
  .feature-grid{display:grid;gap:20px;margin-top:36px;}
  @media (min-width:640px){.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
  @media (min-width:1024px){.feature-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
  .feature-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;
    box-shadow:var(--shadow-sm);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  }
  .feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(18,179,124,.5);}
  .icon-badge{
    width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
    background:rgba(18,179,124,.12);color:var(--primary-deep);font-size:18px;
  }
  .feature-card h3{margin-top:16px;font-size:18px;font-weight:600;}
  .feature-card p{margin-top:8px;font-size:14.5px;line-height:1.85;color:var(--muted);}
  .feature-meta{margin-top:14px;display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:var(--muted);}
  .tag{
    display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
    font-size:12px;font-weight:500;background:var(--paper-2);border:1px solid var(--line);color:var(--muted);
    transition:color .18s ease,border-color .18s ease;
  }
  .tag:hover{color:var(--primary);border-color:rgba(18,179,124,.5);}
  .tag-accent{background:rgba(255,122,69,.12);border-color:rgba(255,122,69,.35);color:#B64A1F;}

  /* ---------- 设备适配图文 ---------- */
  .split{display:grid;gap:36px;align-items:center;margin-top:36px;}
  @media (min-width:1024px){.split{grid-template-columns:1fr 1fr;gap:56px;}}
  .split img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-img);border:1px solid var(--line);}
  .check-list{display:flex;flex-direction:column;gap:14px;margin-top:22px;}
  .check-list li{display:flex;gap:12px;font-size:15.5px;line-height:1.85;color:var(--muted);}
  .check-list i{color:var(--primary);margin-top:6px;font-size:13px;}
  .check-list b{color:var(--text);font-weight:600;}

  /* ---------- 提示块 ---------- */
  .notice{
    margin-top:36px;display:flex;gap:16px;padding:22px 24px;border-radius:var(--radius-card);
    background:#FFF6F1;border-left:4px solid var(--accent);border-top:1px solid rgba(255,122,69,.18);
    border-right:1px solid rgba(255,122,69,.18);border-bottom:1px solid rgba(255,122,69,.18);
  }
  .notice i{color:var(--accent);font-size:18px;margin-top:4px;}
  .notice h3{font-size:16.5px;font-weight:600;}
  .notice p{margin-top:8px;font-size:14.5px;line-height:1.85;color:#6B4A3B;}

  /* ---------- FAQ ---------- */
  .faq-list{margin-top:34px;display:flex;flex-direction:column;gap:10px;}
  .faq-itemborder,.faq-item{border:1px solid var(--line);border-radius:12px;background:#fff;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;}
  .faq-item:hover{border-color:rgba(18,179,124,.45);box-shadow:var(--shadow-sm);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;
    padding:20px 22px;font-size:16.5px;font-weight:600;color:var(--text);transition:color .2s ease;
  }
  .faq-q i{color:var(--muted);font-size:14px;transition:transform .24s ease,color .2s ease;flex:0 0 auto;}
  .faq-item.open .faq-q{color:var(--primary-deep);}
  .faq-item.open .faq-q i{transform:rotate(45deg);color:var(--primary);}
  .faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .24s ease;}
  .faq-a > div{overflow:hidden;}
  .faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.9;color:var(--muted);}
  .faq-item.open .faq-a{grid-template-rows:1fr;}

  /* ---------- 底部 CTA ---------- */
  .cta-band{background:var(--ink);color:var(--ink-text);position:relative;overflow:hidden;}
  .cta-band::after{
    content:"";position:absolute;bottom:-180px;left:-80px;width:520px;height:520px;border-radius:50%;
    background:radial-gradient(circle,rgba(18,179,124,.26),rgba(18,179,124,0) 70%);pointer-events:none;
  }
  .cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;}
  .cta-inner h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;color:#fff;line-height:1.4;}
  .cta-inner p{margin-top:10px;font-size:15px;color:var(--ink-muted);max-width:560px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:#0A100D;color:var(--ink-muted);padding:64px 0 0;border-top:1px solid rgba(255,255,255,.08);}
  .footer-grid{display:grid;gap:36px;}
  @media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:48px;}}
  .footer-brand .brand-main{color:#fff;}
  .footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;max-width:320px;}
  .footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;}
  .footer-col ul{display:flex;flex-direction:column;gap:10px;}
  .footer-col a{font-size:14px;color:var(--ink-muted);transition:color .18s ease;}
  .footer-col a:hover{color:var(--primary);}
  .footer-col p{font-size:14px;line-height:1.85;}
  .copyright{
    margin-top:48px;padding:20px 0 64px;border-top:1px solid rgba(255,255,255,.10);
    display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;
  }
  @media (min-width:768px){.copyright{padding-bottom:28px;}}

  /* ---------- 底部转化条 ---------- */
  .sticky-cta{
    position:fixed;left:0;right:0;bottom:0;z-index:60;
    display:flex;align-items:center;justify-content:space-between;gap:14px;
    height:60px;padding:0 16px;background:rgba(14,21,18,.96);
    border-top:1px solid rgba(255,255,255,.12);
    transform:translateY(14px);opacity:0;pointer-events:none;
    transition:transform .3s ease,opacity .3s ease;
  }
  .sticky-cta.show{transform:translateY(0);opacity:1;pointer-events:auto;}
  .sticky-cta p{font-size:13.5px;color:var(--ink-muted);line-height:1.4;}
  .sticky-close{width:32px;height:32px;border-radius:999px;color:var(--ink-muted);flex:0 0 auto;display:flex;align-items:center;justify-content:center;}
  .sticky-close:hover{color:#fff;background:rgba(255,255,255,.10);}
  @media (min-width:1024px){
    .sticky-cta{
      left:auto;right:24px;bottom:24px;height:auto;width:auto;
      border-radius:999px;padding:12px 16px;border:1px solid rgba(255,255,255,.14);
      box-shadow:0 18px 40px -22px rgba(0,0,0,.9);
    }
    .sticky-cta p{max-width:220px;}
    .copyright{padding-bottom:28px;}
  }
  body{padding-bottom:60px;}
  @media (min-width:1024px){body{padding-bottom:0;}}

  .divider{height:1px;background:var(--line);border:0;}

/* roulang page: category3 */
:root{
  --ink:#0E1512;
  --ink-2:#16211C;
  --paper:#FAFAF7;
  --paper-2:#F1F0EA;
  --primary:#12B37C;
  --primary-deep:#0A7D57;
  --accent:#FF7A45;
  --line:#E4E3DC;
  --text:#1B211E;
  --muted:#6B736E;
  --dark-text:#F2F5F2;
  --dark-muted:#A9B5AE;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-sm:0 1px 2px rgba(14,21,18,.06);
  --sh-md:0 6px 20px -8px rgba(14,21,18,.15);
  --sh-lg:0 18px 48px -20px rgba(14,21,18,.28);
  --wrap:1200px;
  --font:-apple-system,"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:rgba(18,179,124,.25)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 32px}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  height:76px;
  display:flex;
  align-items:center;
  background:rgba(14,21,18,.42);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.10);
  transition:height .22s ease,background .22s ease,box-shadow .22s ease;
}
@supports not ((backdrop-filter:blur(2px)) or (-webkit-backdrop-filter:blur(2px))){
  .site-header{background:rgba(14,21,18,.88)}
}
.site-header.scrolled{
  height:64px;
  background:rgba(14,21,18,.93);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  box-shadow:0 12px 34px -22px rgba(0,0,0,.7);
}
.header-inner{display:flex;align-items:center;gap:28px;width:100%}
.brand{display:flex;flex-direction:column;line-height:1.15;flex-shrink:0}
.brand-main{font-size:18px;font-weight:700;color:var(--dark-text);letter-spacing:.01em}
.brand-sub{font-size:11px;font-weight:500;letter-spacing:.06em;color:var(--dark-muted)}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-link{position:relative;display:inline-block;font-size:15px;font-weight:500;color:#E6EBE7;padding:10px 0;transition:color .18s ease}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--primary)}
.header-actions{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.18);color:#E6EBE7;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.icon-btn:hover{background:rgba(255,255,255,.14);color:var(--primary);border-color:rgba(18,179,124,.5)}
.menu-btn{display:none;width:44px;height:44px;align-items:center;justify-content:center;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.18);color:#E6EBE7}
.menu-btn:hover{background:rgba(255,255,255,.14)}
.menu-lines{display:block;width:18px;height:2px;background:currentColor;position:relative}
.menu-lines::before,.menu-lines::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor}
.menu-lines::before{top:-6px}
.menu-lines::after{top:6px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:background .18s ease,color .18s ease,transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh-md)}
.btn-primary:hover{background:var(--primary-deep);transform:translateY(-1px)}
.btn-ghost{border:1px solid rgba(18,179,124,.55);color:var(--primary-deep);background:transparent}
.btn-ghost:hover{background:rgba(18,179,124,.08);transform:translateY(-1px)}
.btn-ghost-dark{border:1px solid rgba(255,255,255,.22);color:#F2F5F2;background:rgba(255,255,255,.12)}
.btn-ghost-dark:hover{background:rgba(255,255,255,.2);transform:translateY(-1px)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary-deep)}
.btn-link:hover{color:var(--primary)}
.btn-link .arrow{transition:transform .18s ease}
.btn-link:hover .arrow{transform:translateX(3px)}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--ink);color:var(--dark-text);padding:150px 0 88px}
.hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(14,21,18,.90),rgba(14,21,18,.96)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.hero-grid-lines{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(120deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(120deg,rgba(0,0,0,.9),transparent 78%);
}
.hero-glow{
  position:absolute;width:640px;height:640px;right:-160px;top:-220px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,179,124,.28),transparent 66%);
  filter:blur(10px);
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  color:#DFF3EA;background:rgba(18,179,124,.16);
  border:1px solid rgba(18,179,124,.38);
  padding:6px 14px;border-radius:999px;
}
.pill::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary)}
.hero-title{
  margin-top:20px;
  font-size:clamp(30px,4.4vw,50px);
  line-height:1.22;
  font-weight:800;
  letter-spacing:0;
  color:#FFFFFF;
  max-width:560px;
}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.85;color:var(--dark-muted);max-width:560px}
.hero-cta{margin-top:30px;display:flex;flex-wrap:wrap;gap:12px}
.trust{margin-top:26px;display:flex;flex-wrap:wrap;gap:18px}
.trust li{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:#C6D2CB}
.trust li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.hero-media{position:relative;padding:10px;border-radius:18px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.05)}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:10px}
.hero-mini{
  position:absolute;left:-14px;bottom:-18px;display:flex;align-items:center;gap:10px;
  padding:12px 16px;border-radius:12px;background:rgba(16,26,21,.92);
  border:1px solid rgba(18,179,124,.35);box-shadow:var(--sh-lg);
}
.hero-mini .mini-num{font-family:var(--mono);font-size:20px;font-weight:600;color:var(--accent)}
.hero-mini .mini-text{font-size:13px;color:#D6E0DA}

/* ---------- sections ---------- */
.sec{padding:88px 0}
.sec-alt{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:760px}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.10em;
  color:var(--primary-deep);text-transform:uppercase;margin-bottom:12px;
}
.sec-title{font-size:clamp(24px,2.6vw,34px);line-height:1.35;font-weight:700;color:var(--text)}
.sec-desc{margin-top:14px;font-size:16px;color:var(--muted);line-height:1.85}
.sec-foot-note{margin-top:16px;font-size:13px;color:var(--muted)}
.sec-divider{height:1px;background:var(--line);margin:0}

/* ---------- speed check rails ---------- */
.rail{margin-top:40px;border-top:1px solid var(--line)}
.rail-item{
  display:grid;grid-template-columns:64px 200px 1fr auto;gap:24px;align-items:center;
  padding:22px 20px;border-bottom:1px solid var(--line);border-radius:var(--r-card);
  transition:background .18s ease,transform .18s ease;
}
.rail-item:hover{background:#fff;transform:translateX(4px);box-shadow:var(--sh-sm)}
.rail-num{font-family:var(--mono);font-size:14px;font-weight:600;color:var(--accent)}
.rail-title{font-size:16px;font-weight:600;color:var(--text)}
.rail-text{font-size:14px;color:var(--muted);line-height:1.75}
.rail-tag{font-size:12px;font-weight:600;color:var(--primary-deep);background:rgba(18,179,124,.10);border:1px solid rgba(18,179,124,.28);border-radius:999px;padding:4px 12px;white-space:nowrap}

/* ---------- QA list ---------- */
.qa-wrap{margin-top:40px;display:grid;gap:14px}
.qa-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 28px;box-shadow:var(--sh-sm);
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.qa-card:hover{box-shadow:var(--sh-md);transform:translateY(-3px);border-color:rgba(18,179,124,.35)}
.qa-q{display:flex;gap:12px;align-items:flex-start;font-size:19px;font-weight:600;line-height:1.5;color:var(--text)}
.qa-q::before{
  content:"问";flex-shrink:0;width:26px;height:26px;border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(18,179,124,.12);color:var(--primary-deep);
  font-size:12px;font-weight:700;margin-top:2px;
}
.qa-a{margin-top:12px;font-size:15px;line-height:1.85;color:#3C453F;padding-left:38px}
.qa-meta{margin-top:12px;padding-left:38px;font-size:13px;color:var(--muted)}

/* ---------- warn block ---------- */
.warn-block{
  margin-top:36px;
  border-left:4px solid var(--accent);
  background:#FDF4EE;
  border-radius:0 var(--r-card) var(--r-card) 0;
  padding:26px 30px;
}
.warn-block h3{font-size:17px;font-weight:700;color:#8A3B14;display:flex;align-items:center;gap:10px}
.warn-block h3::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent)}
.warn-block p{margin-top:12px;font-size:15px;line-height:1.85;color:#5C3A26}

/* ---------- steps ---------- */
.steps{margin-top:44px;position:relative;padding-left:36px}
.steps::before{content:"";position:absolute;left:9px;top:12px;bottom:12px;width:2px;background:linear-gradient(180deg,var(--primary),rgba(18,179,124,.15))}
.step{position:relative;padding-bottom:30px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:-36px;top:8px;width:20px;height:20px;border-radius:50%;
  background:var(--paper);border:3px solid var(--primary);
}
.step-num{font-family:var(--mono);font-size:13px;font-weight:600;color:var(--accent);letter-spacing:.04em}
.step h3{margin-top:6px;font-size:18px;font-weight:600;color:var(--text)}
.step p{margin-top:8px;font-size:15px;color:var(--muted);line-height:1.85;max-width:680px}

/* ---------- link rail (related) ---------- */
.link-rail{margin-top:38px;display:grid;gap:12px}
.link-row{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 24px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.link-row:hover{border-color:rgba(18,179,124,.4);transform:translateY(-3px);box-shadow:var(--sh-md)}
.link-row h3{font-size:16px;font-weight:600;color:var(--text)}
.link-row p{margin-top:4px;font-size:14px;color:var(--muted)}
.link-row .arrow{font-size:18px;color:var(--primary);transition:transform .18s ease}
.link-row:hover .arrow{transform:translateX(4px)}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink);color:var(--dark-text);padding:76px 0}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  border:1px solid rgba(255,255,255,.12);border-radius:18px;
  padding:38px 40px;background:var(--ink-2);
}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.4;color:#fff}
.cta-inner p{margin-top:10px;font-size:15px;color:var(--dark-muted);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}

/* ---------- footer ---------- */
.site-footer{background:#0A100D;color:var(--dark-muted);padding:64px 0 28px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.85;color:#8C9891;max-width:360px}
.footer-col h4{font-size:14px;font-weight:600;color:#FFFFFF;margin-bottom:14px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{color:var(--dark-muted);transition:color .18s ease}
.footer-col a:hover{color:var(--primary)}
.footer-col p{font-size:13.5px;line-height:1.85;color:#8C9891}
.copyright{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:13px;color:#7C8881;
}

/* ---------- float cta ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:flex;align-items:center;gap:14px;
  padding:12px 14px 12px 20px;border-radius:999px;
  background:var(--ink-2);color:#E9EFEB;
  border:1px solid rgba(255,255,255,.14);box-shadow:var(--sh-lg);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .26s ease,transform .26s ease;
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta span{font-size:13.5px;white-space:nowrap}
.float-close{width:28px;height:28px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;color:#A9B5AE;font-size:16px;line-height:1}
.float-close:hover{background:rgba(255,255,255,.12);color:#fff}

/* ---------- drawer ---------- */
.drawer-mask{position:fixed;inset:0;z-index:80;background:rgba(6,10,8,.55);opacity:0;transition:opacity .24s ease}
.drawer-mask.show{opacity:1}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:90;width:300px;max-width:86vw;
  background:var(--ink);border-left:1px solid rgba(255,255,255,.12);
  transform:translateX(102%);transition:transform .28s ease;
  display:flex;flex-direction:column;padding:20px 20px 24px;overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.12)}
.drawer-close{width:40px;height:40px;border-radius:10px;color:#C6D2CB;font-size:22px;line-height:1}
.drawer-close:hover{background:rgba(255,255,255,.12)}
.drawer-nav{margin-top:8px;display:flex;flex-direction:column}
.drawer-nav a{
  display:flex;align-items:center;min-height:52px;padding:0 6px;
  color:#E6EBE7;font-size:16px;font-weight:500;
  border-bottom:1px solid rgba(255,255,255,.10);
  transition:color .18s ease,padding-left .18s ease;
}
.drawer-nav a:hover{color:var(--primary);padding-left:12px}
.drawer-nav a.active{color:var(--primary)}
.drawer-cta{margin-top:22px;width:100%}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .wrap{padding:0 24px}
  .nav-links,.header-actions .btn,.header-actions .icon-btn{display:none}
  .menu-btn{display:inline-flex}
  .header-actions{margin-left:auto}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media{max-width:520px}
  .hero-mini{left:12px;bottom:-16px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .rail-item{grid-template-columns:56px 1fr;gap:12px 18px}
  .rail-text{grid-column:2}
  .rail-tag{grid-column:2;justify-self:start}
}
@media (max-width:767px){
  .wrap{padding:0 20px}
  .site-header{height:64px}
  .sec{padding:56px 0}
  .page-hero{padding:118px 0 64px}
  .hero-title{font-size:clamp(26px,7.2vw,34px)}
  .hero-sub{font-size:15.5px}
  .qa-card{padding:20px 18px}
  .qa-a,.qa-meta{padding-left:0}
  .warn-block{padding:20px 18px}
  .steps{padding-left:30px}
  .step::before{left:-30px;width:16px;height:16px;top:9px}
  .cta-inner{padding:26px 22px}
  .site-footer{padding:48px 0 96px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;padding:9px 14px;
    justify-content:space-between;background:rgba(14,21,18,.97);border-left:0;border-right:0;border-bottom:0;
  }
  .float-cta span{font-size:12.5px}
}
@media (max-width:519px){
  .rail-item{grid-template-columns:1fr;padding:18px 14px}
  .rail-num{font-size:13px}
  .link-row{flex-direction:column;align-items:flex-start;gap:10px}
  .hero-cta .btn{width:100%}
}