/* roulang page: index */
:root{
  --ink:#14171A;
  --ink-soft:#2A2F35;
  --signal:#C9F24D;
  --paper:#F5F4F0;
  --paper2:#EAE8E1;
  --white:#FFFFFF;
  --line:#E2E0D8;
  --text:#14171A;
  --text-2:#5B6570;
  --text-3:#8B929A;
  --ok:#2E9E6B;
  --err:#B4432B;
  --r-sm:8px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,23,26,.05);
  --sh-2:0 24px 48px -28px rgba(20,23,26,.35);
  --maxw:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --mono:ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;
  --sans:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.2;letter-spacing:-.02em;font-weight:800}
p{margin:0}
ul,ol{margin:0;padding:0}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px;border-radius:4px}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
@media(min-width:640px){.container{padding:0 32px}}
@media(min-width:1024px){.container{padding:0 48px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(245,244,240,.88);
  backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid transparent;
  transition:background-color .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-stuck{
  background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);
  box-shadow:0 6px 24px -22px rgba(20,23,26,.6);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:12px 0;min-height:72px;flex-wrap:wrap;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;order:1}
.brand-mark{
  width:28px;height:28px;border-radius:9px;background:var(--ink);
  position:relative;display:inline-block;flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;inset:8px;border-radius:999px;background:var(--signal);
}
.brand-text{font-size:19px;font-weight:800;letter-spacing:-.03em;color:var(--ink)}
.nav-tabs{
  order:3;width:100%;display:flex;align-items:center;gap:8px;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  margin:0;padding:0 0 6px;
}
.nav-tabs::-webkit-scrollbar{display:none}
.tab{
  flex:0 0 auto;height:36px;display:inline-flex;align-items:center;
  padding:0 16px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:transparent;
  font-size:14px;line-height:1;color:var(--text-2);white-space:nowrap;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.tab:hover{border-color:var(--ink);color:var(--ink);background:var(--white)}
.tab.is-active{background:var(--signal);border-color:var(--signal);color:var(--ink);font-weight:700}
.header-cta{order:2;display:flex;align-items:center;gap:10px;margin-left:auto}

@media(min-width:1024px){
  .header-inner{flex-wrap:nowrap;padding:14px 0}
  .nav-tabs{order:2;width:auto;margin:0 auto;padding-bottom:0;overflow:visible}
  .header-cta{order:3;margin-left:0}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:0;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn .arrow{transition:transform .2s var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--signal);color:var(--ink)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{background:var(--white);border-color:var(--ink)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn-light{background:var(--signal);color:var(--ink)}
.btn-light:hover{background:#fff;color:var(--ink)}
.text-link{
  font-size:14px;font-weight:600;color:var(--ink);
  text-decoration:underline;text-decoration-offset:4px;text-underline-offset:5px;
  transition:background-color .2s var(--ease),color .2s var(--ease);
  padding:2px 4px;border-radius:4px;
}
.text-link:hover{background:var(--signal)}

/* ---------- badges / chips ---------- */
.badge{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;
  border-radius:var(--r-pill);background:var(--paper2);color:var(--text-2);
  font-size:13px;line-height:1;font-weight:600;white-space:nowrap;
}
.badge-signal{background:var(--signal);color:var(--ink)}
.chip{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-pill);background:var(--paper2);color:var(--text-2);
  font-size:12px;line-height:1;font-weight:600;
}

/* ---------- hero ---------- */
.hero{position:relative;padding:52px 0 72px;overflow:hidden}
.hero::before{
  content:"";position:absolute;top:-200px;right:-160px;width:520px;height:520px;
  border-radius:50%;background:radial-gradient(circle at 50% 50%,rgba(201,242,77,.32),rgba(201,242,77,0) 68%);
  pointer-events:none;
}
.hero-grid{display:grid;gap:44px;align-items:center;position:relative}
.hero-copy{max-width:640px}
.hero-title{
  font-size:clamp(1.9rem,4.4vw,3rem);
  letter-spacing:-.03em;line-height:1.14;margin:20px 0 0;
}
.hero-sub{margin:20px 0 0;color:var(--text-2);font-size:17px;max-width:540px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:30px 0 0}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:32px;
  margin:40px 0 0;padding:26px 0 0;border-top:1px solid var(--line);
}
.hero-stats dt{font-size:13px;color:var(--text-3);letter-spacing:.02em;margin:0}
.hero-stats dd{
  margin:6px 0 0;font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:28px;font-weight:700;letter-spacing:-.03em;color:var(--ink);line-height:1.1;
}
.hero-media{margin:0}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-lg);border:1px solid var(--line);box-shadow:var(--sh-2);
}
@media(min-width:1024px){
  .hero{padding:72px 0 96px}
  .hero-grid{grid-template-columns:1.05fr .95fr;gap:64px}
}

/* ---------- sections ---------- */
.section{padding:64px 0}
.section-head{max-width:760px}
.eyebrow{
  font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  color:var(--text-3);margin:0 0 12px;
}
.section-title{font-size:clamp(1.5rem,2.7vw,2.25rem);letter-spacing:-.03em;line-height:1.2}
.section-desc{margin:14px 0 0;color:var(--text-2);font-size:16px;max-width:660px}
.section-head-row{
  display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between;
}
@media(min-width:640px){.section{padding:88px 0}}
@media(min-width:1024px){.section{padding:112px 0}}

/* ---------- timeline ---------- */
.timeline{list-style:none;margin:48px 0 0;position:relative}
.timeline::before{
  content:"";position:absolute;left:27px;top:16px;bottom:16px;width:1px;
  background:linear-gradient(180deg,var(--line),var(--signal) 55%,var(--line));
}
.tl-item{
  position:relative;display:grid;grid-template-columns:56px 1fr;gap:20px;
  align-items:start;padding:16px 0;
}
.tl-num{
  width:56px;height:56px;border-radius:999px;background:var(--white);
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:15px;font-weight:700;
  color:var(--ink);position:relative;z-index:1;
  transition:background-color .35s var(--ease),border-color .35s var(--ease);
}
.tl-item.in-view .tl-num{background:var(--signal);border-color:var(--signal)}
.tl-body h3{font-size:18px;letter-spacing:-.02em}
.tl-body p{margin:8px 0 0;color:var(--text-2);font-size:15px;max-width:560px}
.tl-time{
  font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:13px;
  color:var(--text-3);padding-top:6px;letter-spacing:.02em;
}
@media(min-width:768px){
  .tl-item{grid-template-columns:56px 1fr 150px;gap:28px;padding:18px 0}
  .tl-time{text-align:right;padding-top:8px}
}

/* ---------- card grid ---------- */
.card-grid{display:grid;gap:20px;grid-template-columns:1fr;margin:44px 0 0}
@media(min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.card-grid.cols-4{grid-template-columns:repeat(4,1fr)}}
@media(min-width:1024px){.card-grid.cols-3{grid-template-columns:repeat(3,1fr)}}

.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:var(--ink);box-shadow:var(--sh-2)}
.card-thumb{width:100%;aspect-ratio:16/10;object-fit:cover;display:block}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;letter-spacing:-.02em}
.card-body p{color:var(--text-2);font-size:15px;line-height:1.85}
.card-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);display:flex;align-items:center;justify-content:space-between;
  gap:10px;font-family:var(--mono);font-variant-numeric:tabular-nums;
}

/* ---------- plans ---------- */
.plan-grid{display:grid;gap:20px;grid-template-columns:1fr;margin:44px 0 0;align-items:start}
@media(min-width:768px){.plan-grid{grid-template-columns:repeat(3,1fr)}}
.plan{
  position:relative;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:28px;display:flex;flex-direction:column;
  box-shadow:var(--sh-1);transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.plan:hover{border-color:var(--ink);box-shadow:var(--sh-2)}
.plan-name{font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--text-3);text-transform:uppercase}
.plan-title{font-size:22px;margin:10px 0 0;letter-spacing:-.03em}
.plan-price{
  margin:14px 0 0;font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:26px;font-weight:700;letter-spacing:-.03em;line-height:1.1;
}
.plan-price small{font-family:var(--sans);font-size:13px;font-weight:400;color:var(--text-3);margin-left:6px;letter-spacing:0}
.plan-features{list-style:none;margin:22px 0 0;display:grid;gap:11px}
.plan-features li{position:relative;padding-left:22px;font-size:15px;color:var(--text-2);line-height:1.7}
.plan-features li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:999px;
  background:var(--signal);border:1px solid rgba(20,23,26,.22);
}
.plan-actions{margin-top:28px;padding-top:22px;border-top:1px solid var(--line)}
.plan.is-featured{border-color:var(--ink);border-top:3px solid var(--signal);box-shadow:var(--sh-2)}
.plan-flag{
  position:absolute;top:-13px;left:28px;height:26px;padding:0 12px;border-radius:999px;
  background:var(--signal);color:var(--ink);font-size:12px;font-weight:700;
  display:inline-flex;align-items:center;line-height:1;
}
@media(min-width:768px){
  .plan.is-featured{transform:translateY(-8px)}
}

/* ---------- post list (cms) ---------- */
.post-grid{display:grid;gap:20px;grid-template-columns:1fr;margin:44px 0 0}
@media(min-width:640px){.post-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.post-grid{grid-template-columns:repeat(3,1fr)}}
.post-card{
  display:flex;flex-direction:column;gap:12px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.post-card:hover{transform:translateY(-2px);border-color:var(--ink);box-shadow:var(--sh-2)}
.post-meta{
  display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);
  font-family:var(--mono);font-variant-numeric:tabular-nums;
}
.post-card h3{
  font-size:17px;letter-spacing:-.02em;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card p{
  color:var(--text-2);font-size:15px;line-height:1.85;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;font-weight:600;color:var(--ink);display:inline-flex;align-items:center;gap:6px;
}
.empty-state{
  margin:44px 0 0;padding:56px 24px;text-align:center;
  background:var(--white);border:1px dashed var(--line);border-radius:var(--r-lg);
}
.empty-state p{color:var(--text-2);font-size:15px}
.empty-state .btn{margin-top:18px}

/* ---------- quotes ---------- */
.quote-grid{display:grid;gap:20px;grid-template-columns:1fr;margin:44px 0 0}
@media(min-width:768px){.quote-grid{grid-template-columns:repeat(3,1fr)}}
.quote{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px;display:flex;flex-direction:column;gap:16px;box-shadow:var(--sh-1);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.quote:hover{border-color:var(--ink);box-shadow:var(--sh-2);transform:translateY(-2px)}
.quote-text{font-size:15px;color:var(--text-2);line-height:1.9}
.quote-text::before{content:"“";font-size:22px;color:var(--signal);font-weight:800;margin-right:2px}
.quote-text::after{content:"”";font-size:22px;color:var(--signal);font-weight:800;margin-left:2px}
.quote-who{margin-top:auto;padding-top:16px;border-top:1px solid var(--line)}
.quote-who strong{display:block;font-size:15px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.quote-who span{display:block;font-size:13px;color:var(--text-3);margin-top:4px}

/* ---------- faq ---------- */
.faq{margin:40px 0 0;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:700;letter-spacing:-.02em;color:var(--ink);line-height:1.5;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--text-2)}
.faq-sign{
  flex:0 0 auto;width:26px;height:26px;border-radius:999px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:15px;color:var(--text-2);line-height:1;
  transition:background-color .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.faq-item.open .faq-sign{background:var(--signal);border-color:var(--signal);color:var(--ink)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease)}
.faq-a p{margin:0 0 24px;color:var(--text-2);font-size:15px;line-height:1.9;max-width:780px}

/* ---------- cta band ---------- */
.cta-band{background:var(--ink);color:#fff;padding:72px 0}
.cta-grid{display:grid;gap:40px}
@media(min-width:1024px){
  .cta-band{padding:96px 0}
  .cta-grid{grid-template-columns:1fr 460px;gap:64px;align-items:start}
}
.cta-band h2{font-size:clamp(1.5rem,2.7vw,2.25rem);letter-spacing:-.03em;color:#fff}
.cta-band .lead{margin:16px 0 0;color:rgba(255,255,255,.68);font-size:16px;max-width:520px}
.cta-list{list-style:none;margin:32px 0 0;display:grid;gap:14px}
.cta-list li{
  position:relative;padding-left:26px;font-size:15px;color:rgba(255,255,255,.82);line-height:1.7;
}
.cta-list li::before{
  content:"";position:absolute;left:0;top:10px;width:9px;height:9px;border-radius:999px;background:var(--signal);
}
.cta-contact{margin:32px 0 0;display:grid;gap:6px;font-size:14px;color:rgba(255,255,255,.6)}
.cta-contact b{color:#fff;font-weight:600}

.form-card{background:var(--paper);color:var(--ink);border-radius:var(--r-lg);padding:28px}
.form-card h3{font-size:20px;letter-spacing:-.02em}
.form-card .form-note{margin:10px 0 22px;font-size:14px;color:var(--text-2)}
.field{display:block;margin-bottom:18px}
.field > span{display:block;font-size:13px;font-weight:600;color:var(--text-2);margin-bottom:6px}
.field input,.field select,.field textarea{
  width:100%;background:transparent;border:0;border-bottom:1px solid var(--line);
  padding:9px 0;font-size:15px;color:var(--ink);border-radius:0;
  transition:border-color .2s var(--ease),padding-bottom .2s var(--ease);
}
.field select{appearance:none;-webkit-appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 14px) 18px,calc(100% - 9px) 18px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field textarea{resize:vertical;min-height:76px}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-bottom-color:var(--signal);border-bottom-width:2px;padding-bottom:8px;
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field-row{display:grid;gap:18px}
@media(min-width:640px){.field-row{grid-template-columns:1fr 1fr}}
.check{display:flex;align-items:flex-start;gap:10px;margin:6px 0 22px;font-size:13px;color:var(--text-2);line-height:1.7}
.check input{width:18px;height:18px;flex:0 0 auto;margin-top:3px;accent-color:#14171A}
.check a{color:var(--ink);text-decoration:underline;text-underline-offset:4px}
.form-status{
  margin-top:16px;font-size:14px;display:none;padding:12px 14px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:var(--white);
}
.form-status.is-ok{display:block;color:var(--ok);border-color:rgba(46,158,107,.35);background:rgba(46,158,107,.08)}
.form-status.is-err{display:block;color:var(--err);border-color:rgba(180,67,43,.35);background:rgba(180,67,43,.07)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#fff;padding:64px 0 0}
.footer-grid{display:grid;gap:36px;grid-template-columns:1fr}
@media(min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr}}
.footer-brand{display:inline-flex;align-items:center;gap:10px}
.footer-brand .brand-mark{background:#fff}
.footer-brand .brand-mark::after{background:var(--signal)}
.footer-brand span{font-size:19px;font-weight:800;letter-spacing:-.03em;color:#fff}
.footer-desc{margin:16px 0 0;font-size:14px;color:rgba(255,255,255,.62);line-height:1.85;max-width:340px}
.footer-meta{margin:18px 0 0;font-size:13px;color:rgba(255,255,255,.42);font-family:var(--mono);letter-spacing:.02em}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.04em;margin:0 0 16px;color:#fff}
.footer-col a,.footer-col p{display:block;font-size:14px;color:rgba(255,255,255,.66);padding:5px 0;line-height:1.7}
.footer-col a{transition:color .2s var(--ease),padding-left .2s var(--ease)}
.footer-col a:hover{color:var(--signal);padding-left:4px}
.footer-qr{
  margin-top:14px;width:96px;height:96px;border-radius:var(--r-sm);
  border:1px dashed rgba(255,255,255,.28);display:flex;align-items:center;justify-content:center;
  font-size:12px;color:rgba(255,255,255,.45);text-align:center;line-height:1.5;padding:8px;
}
@media(min-width:768px){
  .footer-col{padding-left:28px;border-left:1px solid rgba(255,255,255,.12)}
  .footer-grid > .footer-col:first-child{padding-left:0;border-left:0}
}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;display:flex;flex-wrap:wrap;gap:12px 24px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.46);
}
.footer-bottom span{display:inline-block}
.footer-bottom .mono{font-family:var(--mono);letter-spacing:.02em}

/* ---------- motion ---------- */
.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.js .reveal.in-view{opacity:1;transform:none}
.js .hero-copy > *{opacity:0;transform:translateY(14px);animation:rise .7s var(--ease) forwards}
.js .hero-copy > *:nth-child(1){animation-delay:.05s}
.js .hero-copy > *:nth-child(2){animation-delay:.12s}
.js .hero-copy > *:nth-child(3){animation-delay:.19s}
.js .hero-copy > *:nth-child(4){animation-delay:.26s}
.js .hero-copy > *:nth-child(5){animation-delay:.33s}
@keyframes rise{to{opacity:1;transform:translateY(0)}}
.js .hero-media{opacity:0;animation:rise .9s var(--ease) .2s forwards}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .js .reveal,.js .hero-copy > *,.js .hero-media{opacity:1 !important;transform:none !important}
}

/* roulang page: article */
:root{
  --ink:#14171A;
  --signal:#C9F24D;
  --paper:#F5F4F0;
  --paper2:#EAE8E1;
  --line:#E2E0D8;
  --t1:#14171A;
  --t2:#5B6570;
  --t3:#8B929A;
  --ok:#2E9E6B;
  --err:#B4432B;
  --r-s:8px;
  --r-card:16px;
  --r-slab:24px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(20,23,26,.05);
  --shadow-2:0 24px 48px -28px rgba(20,23,26,.35);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn: system-ui, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--t1);
  background:var(--paper);
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.2;letter-spacing:-.02em;font-weight:800;}
p{margin:0 0 1em;}
ul,ol{margin:0 0 1em;padding-left:1.2em;}
::selection{background:var(--signal);color:var(--ink);}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media(min-width:768px){.container{padding:0 32px;}}
@media(min-width:1280px){.container{padding:0 48px;max-width:1240px;}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(245,244,240,.92);
  backdrop-filter:saturate(150%) blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;gap:16px;
  min-height:68px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;font-weight:800;font-size:18px;letter-spacing:-.02em;}
.brand-mark{
  width:22px;height:22px;border-radius:7px;
  background:var(--ink);
  position:relative;display:inline-block;
}
.brand-mark::after{
  content:"";position:absolute;inset:6px 6px 6px 6px;border-radius:3px;background:var(--signal);
}
.brand-text{white-space:nowrap;}
.nav-tabs{
  display:flex;align-items:center;gap:8px;
  margin-left:auto;overflow-x:auto;-webkit-overflow-scrolling:touch;
  scrollbar-width:none;padding:4px 2px;
}
.nav-tabs::-webkit-scrollbar{display:none;}
.tab{
  flex:0 0 auto;height:34px;display:inline-flex;align-items:center;
  padding:0 14px;border-radius:var(--r-pill);
  font-size:14px;color:var(--t2);
  border:1px solid var(--line);background:transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.tab:hover{border-color:var(--ink);color:var(--ink);}
.tab.is-active{background:var(--signal);border-color:var(--signal);color:var(--ink);font-weight:700;}
.header-cta{flex:0 0 auto;display:none;}
@media(min-width:1024px){.header-cta{display:block;}}
@media(min-width:1024px){.nav-tabs{margin-left:28px;}}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-s);border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn i{transition:transform .2s var(--ease);}
.btn:hover i{transform:translateX(4px);}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:var(--signal);color:var(--ink);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{border-color:var(--ink);background:#fff;}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:15px;
  text-decoration:underline;text-underline-offset:4px;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.btn-link:hover{background:var(--signal);color:var(--ink);}

/* ---------- Chips & badges ---------- */
.chip{
  display:inline-flex;align-items:center;height:30px;padding:0 12px;
  border-radius:var(--r-pill);font-size:13px;
  background:var(--paper2);color:var(--t2);
}
.chip-signal{background:var(--signal);color:var(--ink);font-weight:700;}
.chip-line{background:transparent;border:1px solid var(--line);color:var(--t2);}

/* ---------- Article layout ---------- */
.article-wrap{padding:28px 0 72px;}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--t3);margin-bottom:24px;
}
.crumb a:hover{color:var(--ink);}
.crumb .sep{color:var(--line);}
.crumb .current{
  max-width:48vw;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--t2);
}
.article-grid{display:grid;grid-template-columns:1fr;gap:40px;}
@media(min-width:1024px){
  .article-grid{grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start;}
}
.article-head{border-bottom:1px solid var(--line);padding-bottom:26px;margin-bottom:34px;}
.article-tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;}
.article-title{
  font-size:clamp(1.7rem,3.4vw,2.6rem);
  line-height:1.25;max-width:46rem;letter-spacing:-.03em;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:20px;font-size:13px;color:var(--t3);
}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line);}
.article-hero{
  margin:28px 0 34px;border-radius:var(--r-slab);overflow:hidden;
  border:1px solid var(--line);background:#fff;
}
.article-hero img{width:100%;aspect-ratio:16/9;object-fit:cover;}

/* ---------- Article body ---------- */
.article-body{
  max-width:760px;font-size:16px;line-height:1.95;color:#21262B;
}
.article-body h2{
  margin:44px 0 16px;padding-top:18px;font-size:22px;position:relative;
  border-top:1px solid var(--line);padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:18px;bottom:2px;width:3px;background:var(--signal);border-radius:2px;
}
.article-body h3{margin:30px 0 12px;font-size:17.5px;font-weight:700;}
.article-body p{margin:0 0 1.1em;}
.article-body ul,.article-body ol{list-style:none;padding-left:0;margin:0 0 1.2em;}
.article-body ul li,.article-body ol li{
  position:relative;padding-left:22px;margin-bottom:10px;
}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:12px;width:8px;height:8px;border-radius:2px;background:var(--signal);
}
.article-body ol{counter-reset:art;}
.article-body ol li{counter-increment:art;}
.article-body ol li::before{
  content:counter(art,decimal-leading-zero);
  position:absolute;left:0;top:1px;
  font-family:var(--font-mono);font-size:12px;color:var(--t3);font-weight:600;
}
.article-body a{
  color:var(--ink);text-decoration:underline;text-underline-offset:4px;
  transition:background .2s var(--ease);
}
.article-body a:hover{background:var(--signal);}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;background:var(--paper2);
  border-left:3px solid var(--line);border-radius:0 var(--r-s) var(--r-s) 0;
  color:var(--t2);
}
.article-body img{border-radius:var(--r-card);margin:22px 0 8px;width:100%;}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--t3);margin-top:8px;}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px;
  border:1px solid var(--line);border-radius:var(--r-s);overflow:hidden;
}
.article-body th,.article-body td{
  border-bottom:1px solid var(--line);padding:12px 14px;text-align:left;
}
.article-body th{background:var(--paper2);font-weight:700;font-size:14px;}
.article-body tbody tr:nth-child(even){background:rgba(234,232,225,.45);}
.article-body code{
  font-family:var(--font-mono);font-size:.9em;background:var(--paper2);
  padding:2px 6px;border-radius:6px;
}
.empty-state{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-slab);
  padding:56px 28px;text-align:center;
}
.empty-state h3{font-size:20px;margin-bottom:10px;}
.empty-state p{color:var(--t2);margin-bottom:22px;}

/* ---------- Sidebar ---------- */
.sidebar{display:none;}
@media(min-width:1024px){.sidebar{display:block;}}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;margin-bottom:20px;box-shadow:var(--shadow-1);
}
.side-card h3{font-size:15px;margin-bottom:14px;}
.side-list{list-style:none;margin:0;padding:0;font-size:14px;}
.side-list li{padding:10px 0;border-bottom:1px dashed var(--line);color:var(--t2);}
.side-list li:last-child{border-bottom:0;padding-bottom:0;}
.side-list a{display:flex;gap:10px;align-items:baseline;transition:color .2s var(--ease);}
.side-list a:hover{color:var(--ink);}
.side-list .idx{font-family:var(--font-mono);font-size:12px;color:var(--t3);}
.side-cta{background:var(--ink);color:#fff;border-color:var(--ink);}
.side-cta h3{color:#fff;}
.side-cta p{font-size:14px;color:rgba(255,255,255,.72);margin-bottom:16px;}
.side-cta .btn-primary{background:var(--signal);color:var(--ink);width:100%;}
.side-cta .btn-primary:hover{background:#fff;}

/* ---------- Related ---------- */
.section{padding:64px 0;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:14px;margin-bottom:28px;}
.section-head h2{font-size:clamp(1.4rem,2.4vw,1.9rem);}
.section-head .section-sub{color:var(--t2);font-size:14.5px;max-width:56ch;}
.section-head .to-all{margin-left:auto;}
.card-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:640px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.card-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:var(--ink);box-shadow:var(--shadow-2);}
.card-media{overflow:hidden;background:var(--paper2);}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .25s var(--ease);}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:17px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-body p{
  font-size:14.5px;color:var(--t2);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;gap:10px;font-size:13px;color:var(--t3);
}

/* ---------- FAQ ---------- */
.faq-list{max-width:820px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 0;
  display:flex;align-items:center;gap:16px;font-weight:700;font-size:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .sign{
  margin-left:auto;font-family:var(--font-mono);font-size:18px;color:var(--t2);
  width:26px;text-align:center;transition:color .2s var(--ease);
}
.faq-item[open] summary .sign{color:var(--ink);}
.faq-item .answer{padding:0 0 22px;color:var(--t2);font-size:15px;max-width:70ch;}
.faq-item summary:hover{color:#000;}
.faq-item summary:hover .sign{color:var(--ink);}

/* ---------- CTA ---------- */
.cta-block{
  background:var(--ink);border-radius:var(--r-slab);
  padding:44px 28px;color:#fff;
}
@media(min-width:768px){.cta-block{padding:56px 48px;}}
.cta-inner{display:grid;grid-template-columns:1fr;gap:36px;}
@media(min-width:1024px){.cta-inner{grid-template-columns:1fr 460px;gap:56px;align-items:start;}}
.cta-block h2{color:#fff;font-size:clamp(1.5rem,2.8vw,2.1rem);margin-bottom:14px;}
.cta-block p{color:rgba(255,255,255,.72);font-size:15px;max-width:52ch;}
.cta-points{list-style:none;margin:22px 0 0;padding:0;}
.cta-points li{
  display:flex;gap:10px;align-items:flex-start;padding:10px 0;
  border-bottom:1px solid rgba(255,255,255,.12);font-size:14.5px;color:rgba(255,255,255,.86);
}
.cta-points li i{color:var(--signal);margin-top:5px;font-size:12px;}
.form-card{background:var(--paper);border-radius:var(--r-slab);padding:26px;color:var(--ink);}
.form-card h3{font-size:18px;margin-bottom:6px;}
.form-card .form-note{font-size:13px;color:var(--t2);margin-bottom:18px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--t2);margin-bottom:6px;}
.field input,.field select,.field textarea{
  width:100%;background:transparent;border:0;border-bottom:1px solid var(--line);
  padding:9px 2px;font-size:15px;border-radius:0;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{resize:vertical;min-height:76px;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-bottom:2px solid var(--signal);
}
.field input::placeholder,.field textarea::placeholder{color:#A9AFB5;}
.field-row{display:grid;grid-template-columns:1fr;gap:18px;}
@media(min-width:640px){.field-row{grid-template-columns:1fr 1fr;}}
.checkline{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--t2);margin-bottom:18px;}
.checkline input{margin-top:4px;accent-color:var(--ink);}
.form-msg{font-size:13px;margin-top:12px;display:none;}
.form-msg.is-ok{display:block;color:var(--ok);}
.form-msg.is-err{display:block;color:var(--err);}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.78);margin-top:0;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1fr;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:1.6fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:0;}
.footer-col a{display:block;padding:6px 0;font-size:14px;color:rgba(255,255,255,.72);transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--signal);}
.footer-col p{font-size:14px;margin:0 0 8px;color:rgba(255,255,255,.7);}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#fff;margin-bottom:14px;}
.footer-brand .brand-mark{background:var(--signal);}
.footer-brand .brand-mark::after{background:var(--ink);}
.footer-desc{max-width:34ch;line-height:1.85;}
.footer-meta{color:rgba(255,255,255,.5);font-size:13px;}
.footer-qr{
  margin-top:12px;width:104px;height:104px;border-radius:var(--r-card);
  border:1px dashed rgba(255,255,255,.28);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;color:rgba(255,255,255,.55);text-align:center;padding:10px;line-height:1.5;
}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:10px;
  align-items:center;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- Motion ---------- */
.fade-up{opacity:0;transform:translateY(14px);animation:fadeUp .68s var(--ease) forwards;}
.fade-up.d1{animation-delay:.07s;}
.fade-up.d2{animation-delay:.14s;}
@keyframes fadeUp{to{opacity:1;transform:none;}}
@media(prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .fade-up{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --ink:#14171A;
  --ink-soft:#5B6570;
  --ink-weak:#8B929A;
  --signal:#C9F24D;
  --paper:#F5F4F0;
  --paper2:#EAE8E1;
  --line:#E2E0D8;
  --ok:#2E9E6B;
  --err:#B4432B;
  --r-sm:8px;
  --r-card:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh:0 1px 2px rgba(20,23,26,.05);
  --sh-lift:0 24px 48px -28px rgba(20,23,26,.35);
  --mono:ui-monospace,Consolas,"SFMono-Regular",Menlo,monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
}

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

html{scroll-behavior:smooth}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.025em;line-height:1.18}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}

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

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:768px){.container{padding:0 32px}}
@media (min-width:1200px){.container{padding:0 48px}}

.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em}

/* ---------------- header ---------------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(245,244,240,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:70px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:19px;
  font-weight:800;
  letter-spacing:-.03em;
  flex:none;
}
.brand-mark{
  width:15px;
  height:15px;
  border-radius:5px;
  background:var(--signal);
  box-shadow:inset 0 0 0 2px var(--ink);
  flex:none;
}
.brand:hover .brand-mark{transform:rotate(45deg)}
.brand-mark{transition:transform .25s var(--ease)}

.nav-tabs{
  display:flex;
  align-items:center;
  gap:8px;
  margin-left:auto;
  overflow-x:auto;
  padding:6px 2px;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.nav-tabs::-webkit-scrollbar{display:none}

.tab{
  flex:none;
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 15px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  font-size:13.5px;
  font-weight:600;
  color:var(--ink-soft);
  white-space:nowrap;
  background:transparent;
}
.tab:hover{border-color:var(--ink);color:var(--ink)}
.tab.is-active{background:var(--signal);border-color:var(--signal);color:var(--ink)}

.header-cta{flex:none;display:none}
@media (min-width:1024px){.header-cta{display:block}}

@media (max-width:1023px){
  .header-inner{flex-wrap:wrap;padding-top:10px;padding-bottom:10px;gap:12px}
  .brand{font-size:18px}
  .nav-tabs{margin-left:0;width:100%;order:3}
}

/* ---------------- buttons ---------------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn .arrow{transition:transform .2s var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-primary:hover{background:var(--signal);color:var(--ink);border-color:var(--signal)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink);background:#fff}
.btn-sm{height:38px;padding:0 16px;font-size:13.5px}
.btn-block{width:100%}

.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:600;
  font-size:14.5px;
  border-bottom:1px solid var(--ink);
  padding-bottom:2px;
  transition:background-color .2s var(--ease),border-color .2s var(--ease);
}
.text-link:hover{background:var(--signal);border-color:var(--signal)}
.text-link .arrow{transition:transform .2s var(--ease)}
.text-link:hover .arrow{transform:translateX(4px)}

/* ---------------- hero ---------------- */
.page-hero{
  position:relative;
  padding:56px 0 64px;
  border-bottom:1px solid var(--line);
}
@media (min-width:768px){.page-hero{padding:76px 0 88px}}
@media (min-width:1024px){.page-hero{padding:92px 0 104px}}

.hero-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:44px;
  align-items:center;
}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:1.05fr .95fr;gap:64px}
}

.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-weak);
  margin-bottom:22px;
  flex-wrap:wrap;
}
.breadcrumb a:hover{color:var(--ink)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .now{color:var(--ink-soft);max-width:14em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:30px;
  padding:0 14px;
  border-radius:var(--r-pill);
  background:var(--signal);
  color:var(--ink);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.02em;
  margin-bottom:22px;
}

.page-hero h1{
  font-size:clamp(2.1rem,5.2vw,3.3rem);
  line-height:1.12;
  letter-spacing:-.03em;
  margin-bottom:22px;
}
.page-hero h1 em{
  font-style:normal;
  background:linear-gradient(transparent 62%,var(--signal) 62%);
}

.hero-lead{
  font-size:16.5px;
  line-height:1.9;
  color:var(--ink-soft);
  max-width:34em;
  margin-bottom:30px;
}

.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:34px}

.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:12px 40px;
  padding-top:26px;
  border-top:1px solid var(--line);
}
.hero-facts li{display:flex;flex-direction:column;gap:2px}
.hero-facts .num{font-family:var(--mono);font-size:22px;font-weight:700;letter-spacing:-.02em;line-height:1.3}
.hero-facts .lbl{font-size:12.5px;color:var(--ink-weak);letter-spacing:.02em}

.hero-media{
  position:relative;
  margin:0;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh);
  aspect-ratio:4/3;
  background:var(--paper2);
}
.hero-media img{width:100%;height:100%;object-fit:cover;transform:scale(1.02)}
.hero-media figcaption{
  position:absolute;
  left:16px;
  bottom:16px;
  background:rgba(20,23,26,.82);
  color:#fff;
  font-size:12.5px;
  padding:7px 13px;
  border-radius:var(--r-pill);
  backdrop-filter:blur(6px);
}

/* ---------------- section base ---------------- */
.section{padding:64px 0}
@media (min-width:768px){.section{padding:88px 0}}
@media (min-width:1024px){.section{padding:104px 0}}
.section-dark{background:var(--ink);color:#fff}
.section-alt{background:var(--paper2)}

.section-head{max-width:44rem;margin-bottom:44px}
.section-head .kicker{
  display:inline-block;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.12em;
  color:var(--ink-weak);
  text-transform:uppercase;
  margin-bottom:14px;
}
.section-dark .section-head .kicker{color:rgba(255,255,255,.55)}
.section-head h2{
  font-size:clamp(1.6rem,3.4vw,2.35rem);
  margin-bottom:16px;
}
.section-head p{color:var(--ink-soft);font-size:15.5px;line-height:1.9;max-width:38em}
.section-dark .section-head p{color:rgba(255,255,255,.7)}

/* ---------------- Z blocks ---------------- */
.z-list{display:flex;flex-direction:column}
.z-block{
  display:grid;
  grid-template-columns:1fr;
  gap:28px;
  align-items:center;
  padding:56px 0;
  border-top:1px solid var(--line);
}
.z-block:first-child{border-top:0;padding-top:0}
.z-block:last-child{padding-bottom:0}
@media (min-width:1024px){
  .z-block{grid-template-columns:1fr 1fr;gap:64px;padding:72px 0}
  .z-block.is-reverse .z-media{order:2}
}

.z-media{
  margin:0;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:16/10;
  background:var(--paper2);
  box-shadow:var(--sh);
  transition:box-shadow .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease);
}
.z-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.z-block:hover .z-media{border-color:var(--ink);box-shadow:var(--sh-lift);transform:translateY(-2px)}
.z-block:hover .z-media img{transform:scale(1.03)}

.z-index{
  font-family:var(--mono);
  font-size:13px;
  font-weight:700;
  color:var(--ink);
  background:var(--signal);
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 11px;
  border-radius:var(--r-pill);
  margin-bottom:18px;
}
.z-copy h3{font-size:clamp(1.25rem,2.2vw,1.6rem);margin-bottom:14px}
.z-copy > p{color:var(--ink-soft);font-size:15.5px;line-height:1.95;margin-bottom:22px}

.z-points{display:flex;flex-direction:column;gap:12px;margin-bottom:26px}
.z-points li{
  position:relative;
  padding-left:22px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink);
}
.z-points li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:9px;
  height:9px;
  border-radius:50%;
  background:var(--signal);
  box-shadow:inset 0 0 0 2px var(--ink);
}

/* ---------------- timeline ---------------- */
.timeline{position:relative;padding-left:26px}
.timeline::before{
  content:"";
  position:absolute;
  left:7px;
  top:6px;
  bottom:6px;
  width:2px;
  background:linear-gradient(to bottom,var(--signal),var(--line));
}
.tl-item{position:relative;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";
  position:absolute;
  left:-26px;
  top:8px;
  width:16px;
  height:16px;
  border-radius:50%;
  border:2px solid var(--ink);
  background:var(--paper);
  transition:background-color .25s var(--ease);
}
.tl-item:hover::before{background:var(--signal)}
.tl-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:12px;margin-bottom:6px}
.tl-num{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--ink-weak)}
.tl-title{font-size:17px;font-weight:700;letter-spacing:-.02em}
.tl-time{font-family:var(--mono);font-size:12.5px;color:var(--ink-weak);margin-left:auto}
.tl-desc{color:var(--ink-soft);font-size:14.5px;line-height:1.85;max-width:44em}
.section-alt .timeline::before{background:linear-gradient(to bottom,var(--signal),#cfcdc4)}
.section-alt .tl-item::before{background:var(--paper2)}

/* ---------------- scene rows ---------------- */
.rows{border-top:1px solid var(--line)}
.row{
  display:grid;
  grid-template-columns:1fr;
  gap:10px;
  padding:22px 0;
  border-bottom:1px solid var(--line);
  transition:background-color .2s var(--ease);
}
@media (min-width:768px){
  .row{grid-template-columns:200px 1fr auto;gap:24px;align-items:baseline;padding:24px 12px}
}
.row:hover{background:#fff}
.row-title{font-weight:700;font-size:16px;letter-spacing:-.02em}
.row-text{color:var(--ink-soft);font-size:14.5px;line-height:1.85}
.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  background:var(--paper2);
  color:var(--ink-soft);
  font-size:12.5px;
  font-weight:600;
  white-space:nowrap;
}
.badge-signal{background:var(--signal);color:var(--ink)}
.section-dark .badge{background:rgba(255,255,255,.12);color:#fff}

/* ---------------- FAQ ---------------- */
.faq-list{border-top:1px solid var(--line);max-width:52rem}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  text-align:left;
  background:transparent;
  border:0;
  cursor:pointer;
  padding:24px 4px;
  font-size:16.5px;
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1.5;
}
.faq-q:hover{color:var(--ink-soft)}
.faq-sign{
  flex:none;
  width:24px;
  height:24px;
  position:relative;
  border-radius:50%;
  border:1px solid var(--line);
  transition:background-color .2s var(--ease),border-color .2s var(--ease);
}
.faq-sign::before,
.faq-sign::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  background:var(--ink);
  transform:translate(-50%,-50%);
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.faq-sign::before{width:10px;height:1.6px}
.faq-sign::after{width:1.6px;height:10px}
.faq-item.is-open .faq-sign{background:var(--signal);border-color:var(--signal)}
.faq-item.is-open .faq-sign::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .22s var(--ease);
}
.faq-a p{
  padding:0 4px 26px;
  color:var(--ink-soft);
  font-size:15px;
  line-height:1.9;
  max-width:44rem;
}

/* ---------------- CTA + form ---------------- */
.cta-section{background:var(--ink);color:#fff}
.cta-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:40px;
  align-items:start;
}
@media (min-width:1024px){.cta-grid{grid-template-columns:1fr 1fr;gap:72px}}

.cta-copy h2{font-size:clamp(1.6rem,3.2vw,2.2rem);margin-bottom:18px}
.cta-copy p{color:rgba(255,255,255,.72);font-size:15.5px;line-height:1.95;margin-bottom:26px;max-width:34em}
.cta-points{display:flex;flex-direction:column;gap:14px;margin-bottom:30px}
.cta-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.88)}
.cta-points li span:first-child{
  font-family:var(--mono);
  color:var(--signal);
  font-weight:700;
  flex:none;
}
.cta-contact{border-top:1px solid rgba(255,255,255,.14);padding-top:22px;font-size:14px;color:rgba(255,255,255,.65)}

.form-card{
  background:var(--paper);
  color:var(--ink);
  border-radius:var(--r-lg);
  padding:28px 22px;
  box-shadow:var(--sh-lift);
}
@media (min-width:640px){.form-card{padding:36px 32px}}

.form-card h3{font-size:19px;margin-bottom:8px}
.form-card .form-hint{font-size:13.5px;color:var(--ink-weak);margin-bottom:24px}

.form-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:640px){
  .form-grid{grid-template-columns:1fr 1fr}
  .form-grid .span-2{grid-column:1 / -1}
}

.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:13px;font-weight:600;color:var(--ink-soft)}
.field input[type="text"],
.field input[type="tel"],
.field input[type="email"],
.field select,
.field textarea{
  width:100%;
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line);
  border-radius:0;
  padding:10px 2px;
  font-size:15px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{resize:vertical;min-height:76px;line-height:1.7}
.field select{appearance:none;cursor:pointer;
  background-image:linear-gradient(45deg,transparent 50%,var(--ink-soft) 50%),linear-gradient(135deg,var(--ink-soft) 50%,transparent 50%);
  background-position:calc(100% - 14px) 50%,calc(100% - 9px) 50%;
  background-size:5px 5px,5px 5px;
  background-repeat:no-repeat;
}
.field input:hover,.field textarea:hover,.field select:hover{border-color:var(--ink-weak)}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;
  border-bottom:2px solid var(--signal);
  padding-bottom:9px;
}

.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--ink-soft);line-height:1.7}
.check-row input{margin-top:5px;accent-color:var(--ink);width:16px;height:16px;flex:none}

.form-note{font-size:12.5px;color:var(--ink-weak);margin-top:14px}
.form-msg{margin-top:16px;font-size:14px;font-weight:600;display:none}
.form-msg.ok{display:block;color:var(--ok)}
.form-msg.err{display:block;color:var(--err)}

/* ---------------- footer ---------------- */
.site-footer{
  background:var(--ink);
  color:rgba(255,255,255,.72);
  padding:64px 0 28px;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:36px;
  padding-bottom:44px;
}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:0}
  .footer-col{padding:0 32px}
  .footer-col:first-child{padding-left:0}
  .footer-col:last-child{padding-right:0}
  .footer-col + .footer-col{border-left:1px solid rgba(255,255,255,.12)}
}

.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:19px;
  font-weight:800;
  color:#fff;
  letter-spacing:-.03em;
  margin-bottom:16px;
}
.footer-desc{color:rgba(255,255,255,.62);font-size:14px;line-height:1.85;max-width:30em;margin-bottom:12px}
.footer-meta{color:rgba(255,255,255,.45);font-size:13px;font-family:var(--mono);margin:0}

.footer-col h4{
  color:#fff;
  font-size:14px;
  font-weight:700;
  letter-spacing:.02em;
  margin-bottom:18px;
}
.footer-col a,
.footer-col p{
  display:block;
  color:rgba(255,255,255,.68);
  font-size:14px;
  padding:6px 0;
  margin:0;
}
.footer-col a:hover{color:var(--signal)}

.footer-qr{
  margin-top:14px;
  width:96px;
  height:96px;
  border-radius:var(--r-card);
  border:1px dashed rgba(255,255,255,.3);
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  font-size:12px;
  line-height:1.5;
  color:rgba(255,255,255,.5);
  padding:10px;
}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  align-items:center;
  border-top:1px solid rgba(255,255,255,.12);
  padding-top:22px;
  font-size:13px;
  color:rgba(255,255,255,.5);
}
.footer-bottom .mono{letter-spacing:0}

/* ---------------- motion ---------------- */
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .hero-media img{transform:none !important}
}

/* roulang page: category2 */
:root{
    --ink:#14171A;
    --signal:#C9F24D;
    --paper:#F5F4F0;
    --paper2:#EAE8E1;
    --line:#E2E0D8;
    --text:#14171A;
    --text-2:#5B6570;
    --text-3:#8B929A;
    --ok:#2E9E6B;
    --warn:#B4432B;
    --r-sm:8px;
    --r-card:16px;
    --r-lg:24px;
    --r-pill:999px;
    --sh-1:0 1px 2px rgba(20,23,26,.05);
    --sh-2:0 24px 48px -28px rgba(20,23,26,.35);
    --ease:cubic-bezier(.2,.7,.3,1);
    --mono: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--text);
    font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;}
  h1,h2,h3,h4{margin:0;letter-spacing:-.025em;line-height:1.18;font-weight:800;}
  p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  .mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding:0 32px;
  }

  /* ============ HEADER ============ */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(245,244,240,.92);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
    transition:box-shadow .25s var(--ease), background .25s var(--ease);
  }
  .site-header.is-scrolled{box-shadow:0 10px 30px -24px rgba(20,23,26,.5);background:rgba(255,255,255,.94);}
  .header-inner{
    display:flex;
    align-items:center;
    gap:24px;
    min-height:72px;
    padding-top:10px;
    padding-bottom:10px;
  }
  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;cursor:pointer;}
  .brand-mark{
    width:26px;height:26px;border-radius:8px;
    background:var(--ink);
    position:relative;
    flex:0 0 auto;
  }
  .brand-mark::after{
    content:"";
    position:absolute;
    inset:7px auto auto 7px;
    width:12px;height:12px;
    border-radius:50%;
    background:var(--signal);
  }
  .brand-text{
    font-size:19px;
    font-weight:800;
    letter-spacing:-.03em;
  }
  .nav-tabs{
    display:flex;
    align-items:center;
    gap:8px;
    margin-left:8px;
    flex:1 1 auto;
    overflow-x:auto;
    scrollbar-width:none;
    -ms-overflow-style:none;
  }
  .nav-tabs::-webkit-scrollbar{display:none;}
  .tab{
    display:inline-flex;
    align-items:center;
    height:36px;
    padding:0 16px;
    border-radius:var(--r-pill);
    border:1px solid var(--line);
    background:transparent;
    color:var(--text-2);
    font-size:13.5px;
    font-weight:600;
    white-space:nowrap;
    transition:background .22s var(--ease), color .22s var(--ease), border-color .22s var(--ease);
  }
  .tab:hover{border-color:var(--ink);color:var(--text);background:#fff;}
  .tab.is-active{background:var(--signal);border-color:var(--signal);color:var(--ink);}
  .tab:focus-visible{outline:2px solid var(--ink);outline-offset:2px;}
  .header-cta{flex:0 0 auto;}

  /* ============ BUTTONS ============ */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:46px;
    padding:0 22px;
    border-radius:var(--r-sm);
    border:1px solid transparent;
    font-size:15px;
    font-weight:700;
    cursor:pointer;
    transition:background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
  }
  .btn .arrow{transition:transform .2s var(--ease);display:inline-block;}
  .btn:hover .arrow{transform:translateX(4px);}
  .btn-primary{background:var(--ink);color:#fff;border-color:var(--ink);}
  .btn-primary:hover{background:var(--signal);color:var(--ink);border-color:var(--signal);}
  .btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
  .btn-ghost:hover{border-color:var(--ink);background:#fff;}
  .btn-signal{background:var(--signal);color:var(--ink);border-color:var(--signal);}
  .btn-signal:hover{background:var(--ink);color:#fff;border-color:var(--ink);}
  .btn-sm{min-height:38px;padding:0 16px;font-size:13.5px;border-radius:var(--r-pill);}
  .btn-block{width:100%;}
  .btn:focus-visible{outline:2px solid var(--ink);outline-offset:2px;}
  .link-underline{
    display:inline-flex;align-items:center;gap:6px;
    font-weight:700;font-size:14.5px;
    box-shadow:inset 0 -1px 0 var(--ink);
    padding-bottom:2px;
    transition:box-shadow .2s var(--ease), background .2s var(--ease);
  }
  .link-underline:hover{box-shadow:inset 0 -1.4em 0 var(--signal);}

  /* ============ TAGS / BADGES ============ */
  .badge{
    display:inline-flex;align-items:center;
    height:26px;padding:0 12px;
    border-radius:var(--r-pill);
    background:var(--paper2);
    color:var(--text-2);
    font-size:12.5px;font-weight:600;
    white-space:nowrap;
  }
  .badge-signal{background:var(--signal);color:var(--ink);}
  .badge-ink{background:var(--ink);color:#fff;}
  .badge-ok{background:rgba(46,158,107,.12);color:var(--ok);}

  /* ============ SECTION ============ */
  .section{padding:96px 0;}
  .section-tight{padding:72px 0;}
  .sec-head{max-width:760px;margin-bottom:48px;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12.5px;font-weight:700;letter-spacing:.12em;
    color:var(--text-3);
    text-transform:uppercase;
    margin-bottom:16px;
  }
  .eyebrow::before{content:"";width:22px;height:2px;background:var(--signal);border-radius:2px;}
  .sec-head h2{font-size:clamp(1.6rem,3vw,2.15rem);}
  .sec-head p{margin-top:16px;color:var(--text-2);font-size:15.5px;}

  /* ============ HERO ============ */
  .hero{
    position:relative;
    padding:64px 0 80px;
    background:var(--paper);
    overflow:hidden;
    border-bottom:1px solid var(--line);
  }
  .hero-bg{
    position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-2.webp');
    background-size:cover;
    background-position:center;
    opacity:.10;
    pointer-events:none;
  }
  .hero-inner{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;}
  .breadcrumb{
    display:flex;align-items:center;gap:8px;
    font-size:13px;color:var(--text-3);
    margin-bottom:22px;
    flex-wrap:wrap;
  }
  .breadcrumb a:hover{color:var(--ink);}
  .breadcrumb .sep{color:var(--line);}
  .breadcrumb .current{color:var(--text-2);}
  .hero h1{
    font-size:clamp(2rem,4.4vw,3.2rem);
    max-width:16em;
  }
  .hero h1 .hl{
    background:linear-gradient(transparent 62%, var(--signal) 62%);
    background-size:100% 100%;
  }
  .hero-lead{
    margin-top:24px;
    color:var(--text-2);
    font-size:16.5px;
    max-width:38em;
    line-height:1.9;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
  .hero-figure{
    position:relative;
    border-radius:var(--r-lg);
    overflow:hidden;
    border:1px solid var(--line);
    background:var(--paper2);
    box-shadow:var(--sh-1);
    aspect-ratio:4/3;
  }
  .hero-figure img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease);}
  .hero-figure:hover img{transform:scale(1.02);}
  .hero-figure .fig-tag{
    position:absolute;left:16px;bottom:16px;
    background:rgba(20,23,26,.88);
    color:#fff;
    font-size:12.5px;
    font-weight:600;
    padding:8px 14px;
    border-radius:var(--r-pill);
  }
  .hero-notes{
    display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;
  }
  .hero-notes span{
    font-size:13px;color:var(--text-2);
    background:#fff;border:1px solid var(--line);
    border-radius:var(--r-pill);
    padding:6px 14px;
  }

  /* ============ STAT BAR ============ */
  .stat-bar{
    position:relative;
    background:var(--ink);
    color:#fff;
    padding:44px 0;
    overflow:hidden;
  }
  .stat-bar::before{
    content:"";
    position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-1.png');
    background-size:cover;background-position:center;
    opacity:.16;
  }
  .stat-grid{
    position:relative;
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:28px;
  }
  .stat-item{border-left:1px solid rgba(255,255,255,.16);padding-left:20px;}
  .stat-item:first-child{border-left:0;padding-left:0;}
  .stat-num{
    font-family:var(--mono);
    font-variant-numeric:tabular-nums;
    font-size:clamp(1.6rem,3vw,2.1rem);
    font-weight:700;
    letter-spacing:-.02em;
    color:#fff;
  }
  .stat-num em{font-style:normal;color:var(--signal);}
  .stat-label{margin-top:8px;font-size:13.5px;color:rgba(255,255,255,.66);line-height:1.7;}

  /* ============ COMPLIANCE LIST ============ */
  .split{
    display:grid;
    grid-template-columns:minmax(0,1fr) 340px;
    gap:56px;
    align-items:start;
  }
  .checklist{position:relative;}
  .checklist::before{
    content:"";
    position:absolute;
    left:15px;top:10px;bottom:10px;
    width:2px;
    background:linear-gradient(180deg,var(--signal),var(--line));
    border-radius:2px;
  }
  .cl-item{
    position:relative;
    display:grid;
    grid-template-columns:32px minmax(0,1fr);
    gap:20px;
    padding:0 0 30px;
  }
  .cl-item:last-child{padding-bottom:0;}
  .cl-dot{
    width:32px;height:32px;border-radius:50%;
    border:2px solid var(--line);
    background:#fff;
    position:relative;
    z-index:1;
    margin-top:2px;
    transition:border-color .3s var(--ease), background .3s var(--ease);
    display:flex;align-items:center;justify-content:center;
    font-family:var(--mono);
    font-size:12px;
    color:var(--text-3);
    font-weight:700;
  }
  .cl-item.in-view .cl-dot{border-color:var(--signal);background:var(--signal);color:var(--ink);}
  .cl-body{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:18px 20px;
    transition:border-color .2s var(--ease), transform .2s var(--ease), box-shadow .2s var(--ease);
  }
  .cl-item:hover .cl-body{border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--sh-2);}
  .cl-top{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;}
  .cl-top h3{font-size:16.5px;}
  .cl-body p{margin-top:10px;color:var(--text-2);font-size:14.5px;line-height:1.85;}
  .cl-body p + p{margin-top:6px;}

  /* ============ SIDE PANEL ============ */
  .side-sticky{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
  .panel{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:24px;
    transition:border-color .2s var(--ease), box-shadow .2s var(--ease);
  }
  .panel:hover{border-color:var(--ink);box-shadow:var(--sh-2);}
  .panel h3{font-size:17px;margin-bottom:10px;}
  .panel p{color:var(--text-2);font-size:14.5px;line-height:1.85;}
  .panel .btn{margin-top:18px;}
  .panel-figure{
    border-radius:var(--r-sm);
    overflow:hidden;
    margin-bottom:18px;
    aspect-ratio:16/10;
    border:1px solid var(--line);
  }
  .panel-figure img{width:100%;height:100%;object-fit:cover;}
  .contact-lines{margin-top:16px;border-top:1px solid var(--line);padding-top:16px;display:flex;flex-direction:column;gap:8px;}
  .contact-lines span{font-size:13.5px;color:var(--text-2);display:flex;justify-content:space-between;gap:12px;}
  .contact-lines b{color:var(--text);font-weight:600;}

  /* ============ DEFENSE / FLOW ============ */
  .flow-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:0;
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    overflow:hidden;
    background:#fff;
  }
  .flow-cell{
    padding:32px 26px;
    border-right:1px solid var(--line);
    transition:background .22s var(--ease);
  }
  .flow-cell:last-child{border-right:0;}
  .flow-cell:hover{background:var(--paper);}
  .flow-num{
    font-family:var(--mono);
    font-size:13px;
    color:var(--text-3);
    letter-spacing:.06em;
  }
  .flow-cell h3{font-size:16.5px;margin-top:12px;}
  .flow-cell p{margin-top:10px;color:var(--text-2);font-size:14px;line-height:1.8;}

  /* ============ DELIVERABLES ============ */
  .deliver-wrap{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:20px;
  }
  .deliver{
    display:flex;gap:16px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:22px 24px;
    transition:border-color .2s var(--ease), transform .2s var(--ease), box-shadow .2s var(--ease);
  }
  .deliver:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--sh-2);}
  .deliver .tick{
    flex:0 0 auto;width:26px;height:26px;border-radius:50%;
    background:var(--signal);color:var(--ink);
    display:flex;align-items:center;justify-content:center;
    font-size:14px;font-weight:800;
    margin-top:2px;
  }
  .deliver h3{font-size:16px;}
  .deliver p{margin-top:8px;color:var(--text-2);font-size:14px;line-height:1.8;}

  /* ============ FAQ ============ */
  .faq{border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;
    display:flex;align-items:flex-start;justify-content:space-between;gap:24px;
    background:transparent;border:0;
    padding:24px 0;
    text-align:left;
    font-size:16.5px;font-weight:700;
    color:var(--text);
    cursor:pointer;
    transition:color .2s var(--ease);
  }
  .faq-q:hover{color:var(--ink);}
  .faq-q:focus-visible{outline:2px solid var(--ink);outline-offset:4px;}
  .faq-sign{
    flex:0 0 auto;
    width:26px;height:26px;border-radius:50%;
    border:1px solid var(--line);
    display:flex;align-items:center;justify-content:center;
    font-size:15px;font-weight:700;line-height:1;
    transition:background .22s var(--ease), border-color .22s var(--ease), color .22s var(--ease);
  }
  .faq-item.open .faq-sign{background:var(--signal);border-color:var(--signal);color:var(--ink);}
  .faq-a{
    max-height:0;overflow:hidden;
    transition:max-height .22s var(--ease);
  }
  .faq-a p{
    padding:0 0 26px;
    color:var(--text-2);
    font-size:14.8px;
    line-height:1.9;
    max-width:62ch;
  }

  /* ============ CTA ============ */
  .cta-block{
    background:var(--ink);
    color:#fff;
    border-radius:var(--r-lg);
    padding:56px 48px;
    display:grid;
    grid-template-columns:1fr 420px;
    gap:48px;
    align-items:start;
    position:relative;
    overflow:hidden;
  }
  .cta-block::after{
    content:"";
    position:absolute;right:-80px;top:-80px;
    width:260px;height:260px;border-radius:50%;
    background:rgba(201,242,77,.10);
  }
  .cta-copy{position:relative;}
  .cta-copy h2{font-size:clamp(1.6rem,3vw,2.1rem);color:#fff;}
  .cta-copy p{margin-top:16px;color:rgba(255,255,255,.72);font-size:15.5px;max-width:34em;}
  .cta-points{margin-top:28px;display:flex;flex-direction:column;gap:14px;}
  .cta-points li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:rgba(255,255,255,.85);}
  .cta-points li::before{
    content:"";flex:0 0 auto;width:8px;height:8px;border-radius:50%;
    background:var(--signal);margin-top:9px;
  }
  .form-card{
    position:relative;
    background:#fff;
    color:var(--text);
    border-radius:var(--r-lg);
    padding:30px 28px;
    box-shadow:var(--sh-2);
  }
  .form-card h3{font-size:18px;}
  .form-card .form-hint{margin-top:8px;font-size:13px;color:var(--text-3);}
  .field{margin-top:20px;}
  .field label{display:block;font-size:13px;font-weight:600;color:var(--text-2);margin-bottom:2px;}
  .field input,.field select,.field textarea{
    width:100%;
    border:0;
    border-bottom:1px solid var(--line);
    background:transparent;
    padding:9px 0;
    font-size:15px;
    color:var(--text);
    font-family:inherit;
    border-radius:0;
    transition:border-color .2s var(--ease), border-width .2s var(--ease);
  }
  .field textarea{resize:vertical;min-height:64px;line-height:1.7;}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;
    border-bottom:2px solid var(--signal);
    padding-bottom:8px;
  }
  .field .err{display:none;color:var(--warn);font-size:12px;margin-top:6px;}
  .field.invalid .err{display:block;}
  .field.invalid input,.field.invalid select{border-bottom-color:var(--warn);}
  .check-row{display:flex;gap:10px;align-items:flex-start;margin-top:22px;font-size:13px;color:var(--text-2);line-height:1.7;}
  .check-row input{width:16px;height:16px;margin-top:4px;accent-color:#14171A;}
  .form-ok{
    display:none;
    margin-top:18px;
    padding:12px 14px;
    border-radius:var(--r-sm);
    background:rgba(46,158,107,.10);
    color:var(--ok);
    font-size:13.5px;
    font-weight:600;
  }
  .form-ok.show{display:block;}

  /* ============ FOOTER ============ */
  .site-footer{
    background:var(--ink);
    color:rgba(255,255,255,.78);
    margin-top:96px;
    padding:72px 0 0;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1.2fr;
    gap:0;
  }
  .footer-col{
    padding:0 28px;
    border-left:1px solid rgba(255,255,255,.12);
  }
  .footer-col:first-child{border-left:0;padding-left:0;}
  .footer-brand{
    display:flex;align-items:center;gap:10px;
    color:#fff;font-size:18px;font-weight:800;letter-spacing:-.02em;
  }
  .footer-brand .brand-mark{background:#fff;}
  .footer-brand .brand-mark::after{background:var(--ink);}
  .footer-desc{margin-top:18px;font-size:13.8px;line-height:1.85;color:rgba(255,255,255,.62);max-width:30em;}
  .footer-meta{margin-top:14px;font-size:13px;color:rgba(255,255,255,.45);}
  .footer-col h4{color:#fff;font-size:14px;letter-spacing:.02em;margin-bottom:16px;}
  .footer-col a{
    display:block;
    font-size:13.8px;
    color:rgba(255,255,255,.72);
    padding:6px 0;
    transition:color .2s var(--ease), transform .2s var(--ease);
  }
  .footer-col a:hover{color:var(--signal);transform:translateX(3px);}
  .footer-col p{font-size:13.6px;line-height:1.9;color:rgba(255,255,255,.72);}
  .footer-qr{
    margin-top:16px;
    width:104px;height:104px;
    border-radius:var(--r-sm);
    border:1px dashed rgba(255,255,255,.28);
    display:flex;align-items:center;justify-content:center;
    text-align:center;
    font-size:12px;
    color:rgba(255,255,255,.55);
    padding:10px;
    line-height:1.5;
  }
  .footer-bottom{
    margin-top:56px;
    border-top:1px solid rgba(255,255,255,.12);
    padding:22px 0 28px;
    display:flex;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
    font-size:12.8px;
    color:rgba(255,255,255,.5);
  }

  /* ============ REVEAL ANIM ============ */
  .reveal{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease), transform .6s var(--ease);}
  .reveal.is-in{opacity:1;transform:none;}

  /* ============ RESPONSIVE ============ */
  @media (max-width:1080px){
    .split{grid-template-columns:minmax(0,1fr);gap:40px;}
    .side-sticky{position:static;flex-direction:row;flex-wrap:wrap;}
    .side-sticky .panel{flex:1 1 280px;}
    .hero-inner{grid-template-columns:1fr;gap:36px;}
    .hero-figure{aspect-ratio:16/9;}
    .flow-grid{grid-template-columns:repeat(2,1fr);}
    .flow-cell:nth-child(2){border-right:0;}
    .flow-cell:nth-child(1),.flow-cell:nth-child(2){border-bottom:1px solid var(--line);}
    .footer-grid{grid-template-columns:1fr 1fr;gap:36px 0;}
    .footer-col:nth-child(3){border-left:0;padding-left:0;}
    .cta-block{grid-template-columns:1fr;padding:44px 32px;}
    .container{padding:0 28px;}
  }
  @media (max-width:820px){
    .section{padding:72px 0;}
    .section-tight{padding:56px 0;}
    .header-inner{flex-wrap:wrap;gap:14px;padding-bottom:12px;}
    .nav-tabs{order:3;width:100%;margin-left:0;}
    .header-cta{margin-left:auto;}
    .stat-grid{grid-template-columns:repeat(2,1fr);gap:24px 20px;}
    .stat-item:nth-child(3){border-left:0;padding-left:0;}
    .deliver-wrap{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;gap:0;}
    .footer-col{border-left:0;padding:26px 0;border-top:1px solid rgba(255,255,255,.12);}
    .footer-col:first-child{border-top:0;padding-top:0;}
    .cta-block{padding:36px 22px;}
    .form-card{padding:26px 20px;}
  }
  @media (max-width:560px){
    .container{padding:0 20px;}
    .hero{padding:40px 0 56px;}
    .hero-actions .btn{width:100%;}
    .flow-grid{grid-template-columns:1fr;}
    .flow-cell{border-right:0;border-bottom:1px solid var(--line);padding:24px 20px;}
    .flow-cell:last-child{border-bottom:0;}
    .stat-grid{grid-template-columns:1fr;}
    .stat-item{border-left:0;padding-left:0;}
    .section{padding:56px 0;}
    .faq-q{font-size:15.5px;padding:20px 0;}
    .breadcrumb{font-size:12.5px;}
    .tab{height:34px;padding:0 13px;font-size:13px;}
  }
  @media (prefers-reduced-motion: reduce){
    *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
    .reveal{opacity:1;transform:none;}
  }

/* roulang page: category3 */
:root{
    --ink:#14171A;
    --signal:#C9F24D;
    --paper:#F5F4F0;
    --paper2:#EAE8E1;
    --surface:#FFFFFF;
    --line:#E2E0D8;
    --text:#14171A;
    --muted:#5B6570;
    --weak:#8B929A;
    --success:#2E9E6B;
    --error:#B4432B;
    --r-sm:8px;
    --r-card:16px;
    --r-lg:24px;
    --r-pill:999px;
    --shadow-sm:0 1px 2px rgba(20,23,26,.05);
    --shadow-lg:0 24px 48px -28px rgba(20,23,26,.35);
    --font-sans: system-ui, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --font-mono: ui-monospace, Consolas, "SFMono-Regular", Menlo, monospace;
    --ease: cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;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;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button,input,textarea,select{font:inherit;color:inherit}
  h1,h2,h3,h4{margin:0;line-height:1.18;letter-spacing:-.02em;font-weight:700}
  h1{letter-spacing:-.03em;font-weight:800}
  p{margin:0}
  ul{margin:0;padding:0;list-style:none}
  .mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.01em}

  ::selection{background:var(--signal);color:var(--ink)}
  :focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:4px}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media (min-width:780px){.container{padding:0 32px}}
  @media (min-width:1200px){.container{padding:0 48px;max-width:1240px}}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(245,244,240,.86);
    border-bottom:1px solid transparent;
    transition:background .25s var(--ease), border-color .25s var(--ease), backdrop-filter .25s var(--ease);
  }
  .site-header.is-scrolled{
    background:rgba(255,255,255,.92);
    backdrop-filter:saturate(140%) blur(10px);
    border-bottom-color:var(--line);
  }
  .header-inner{
    display:flex;align-items:center;gap:20px;
    min-height:72px;padding-top:10px;padding-bottom:10px;
  }
  .brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:-.02em;color:var(--ink);flex:0 0 auto}
  .brand-mark{
    width:14px;height:14px;border-radius:4px;background:var(--signal);
    box-shadow:inset 0 0 0 1px rgba(20,23,26,.18);
    transform:rotate(45deg);
    transition:transform .3s var(--ease);
  }
  .brand:hover .brand-mark{transform:rotate(45deg) scale(1.12)}
  .brand-text{white-space:nowrap}

  .nav-tabs{
    display:flex;align-items:center;gap:8px;flex:1 1 auto;justify-content:center;
    overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  }
  .nav-tabs::-webkit-scrollbar{display:none}
  .tab{
    display:inline-flex;align-items:center;
    height:36px;padding:0 16px;border-radius:var(--r-pill);
    border:1px solid var(--line);background:transparent;
    font-size:14px;color:var(--muted);white-space:nowrap;
    transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  }
  .tab:hover{border-color:var(--ink);color:var(--ink)}
  .tab.is-active{background:var(--signal);border-color:var(--signal);color:var(--ink);font-weight:600}
  .header-cta{flex:0 0 auto}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 24px;border-radius:var(--r-sm);
    border:1px solid transparent;background:transparent;
    font-size:15px;font-weight:600;cursor:pointer;
    transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
  }
  .btn-sm{height:40px;padding:0 18px;font-size:14px}
  .btn-primary{background:var(--ink);color:#fff}
  .btn-primary:hover{background:var(--signal);color:var(--ink);border-color:var(--signal)}
  .btn-primary:hover .btn-arrow{transform:translateX(4px)}
  .btn-ghost{border-color:var(--line);color:var(--ink);background:transparent}
  .btn-ghost:hover{border-color:var(--ink);background:#fff}
  .btn-arrow{transition:transform .2s var(--ease);font-family:var(--font-mono)}
  .btn:active{transform:translateY(1px)}
  .link-text{
    font-weight:600;color:var(--ink);
    text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;
    transition:background .2s var(--ease),color .2s var(--ease);
  }
  .link-text:hover{background:var(--signal)}

  @media (max-width:1023px){
    .header-inner{flex-wrap:wrap;gap:10px 14px}
    .nav-tabs{order:3;width:100%;justify-content:flex-start;padding-bottom:4px}
    .header-cta{margin-left:auto}
  }

  /* ---------- breadcrumb ---------- */
  .crumb{font-size:13px;color:var(--weak);display:flex;flex-wrap:wrap;align-items:center;gap:6px;padding-top:24px}
  .crumb a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:4px}
  .crumb .sep{color:var(--line)}
  .crumb .current{max-width:14em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted)}

  /* ---------- hero ---------- */
  .hero{padding:32px 0 72px}
  .hero-grid{display:grid;gap:40px;align-items:center}
  @media (min-width:1024px){.hero-grid{grid-template-columns:1.06fr .94fr;gap:56px}}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;font-weight:600;color:var(--muted);
    background:var(--paper2);border-radius:var(--r-pill);
    padding:6px 14px;margin-bottom:20px;
  }
  .eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--signal)}
  .hero h1{font-size:clamp(2rem,5.2vw,3.35rem);line-height:1.08}
  .hero-sub{margin-top:20px;font-size:17px;color:var(--muted);max-width:34em}
  .hero-sub strong{color:var(--ink)}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
  .hero-stats{display:flex;flex-wrap:wrap;gap:12px 40px;margin-top:40px;padding-top:24px;border-top:1px solid var(--line)}
  .stat-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:26px;font-weight:700;letter-spacing:-.02em;color:var(--ink);line-height:1.2}
  .stat-label{font-size:13px;color:var(--weak)}
  .hero-figure{position:relative}
  .hero-figure img{
    width:100%;aspect-ratio:4/3;object-fit:cover;
    border-radius:var(--r-lg);border:1px solid var(--line);
    box-shadow:var(--shadow-sm);
  }
  .hero-tag{
    position:absolute;left:18px;bottom:18px;
    background:rgba(20,23,26,.86);color:#fff;
    border-radius:var(--r-pill);padding:7px 16px;font-size:13px;
    backdrop-filter:blur(4px);
  }

  /* ---------- sections ---------- */
  .section{padding:56px 0}
  @media (min-width:780px){.section{padding:88px 0}}
  .section-head{max-width:60ch;margin-bottom:36px}
  .section-head h2{font-size:clamp(1.5rem,3vw,2.15rem);line-height:1.2}
  .section-head p{margin-top:14px;color:var(--muted);font-size:16px}
  .kicker{
    display:block;font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;
    color:var(--weak);text-transform:uppercase;margin-bottom:12px;
  }
  .band{background:var(--paper2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .band-dark{background:var(--ink);color:#fff}

  /* ---------- 数据条 ---------- */
  .metrics{display:grid;gap:18px;grid-template-columns:repeat(2,1fr)}
  @media (min-width:900px){.metrics{grid-template-columns:repeat(4,1fr)}}
  .metric{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    padding:22px 20px;box-shadow:var(--shadow-sm);
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  }
  .metric:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:var(--ink)}
  .metric .num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:30px;font-weight:700;line-height:1.15}
  .metric .num small{font-size:14px;color:var(--muted);font-weight:600;margin-left:4px}
  .metric .cap{margin-top:8px;font-size:13px;color:var(--muted)}

  /* ---------- 覆盖环节 ---------- */
  .split{display:grid;gap:36px}
  @media (min-width:1024px){.split{grid-template-columns:.85fr 1.15fr;gap:64px;align-items:start}}
  .scope-list{display:grid;gap:0}
  .scope-item{
    display:flex;gap:16px;align-items:flex-start;
    padding:20px 0;border-bottom:1px solid var(--line);
    transition:background .2s var(--ease);
  }
  .scope-item:hover{background:#fff}
  .scope-idx{font-family:var(--font-mono);font-size:13px;color:var(--ink);background:var(--signal);border-radius:var(--r-pill);padding:3px 10px;line-height:1.5;flex:0 0 auto;margin-top:4px}
  .scope-item h3{font-size:17px}
  .scope-item p{margin-top:6px;color:var(--muted);font-size:15px}

  /* ---------- 对比矩阵 ---------- */
  .matrix-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border-top:1px solid var(--line)}
  .matrix{min-width:860px}
  .matrix-row{
    display:grid;grid-template-columns:1.05fr .85fr .95fr 1.35fr 1.1fr;gap:18px;
    align-items:center;padding:20px 16px;border-bottom:1px solid var(--line);
    transition:background .2s var(--ease);
  }
  .matrix-row:hover{background:#fff}
  .matrix-head{
    font-size:13px;color:var(--weak);font-weight:600;
    border-bottom:1px solid var(--line);
  }
  .matrix-head:hover{background:transparent}
  .channel{display:flex;flex-direction:column;gap:6px}
  .channel strong{font-size:16px;font-weight:700}
  .badge{
    display:inline-flex;align-items:center;
    border-radius:var(--r-pill);padding:3px 10px;
    font-size:12px;background:var(--paper2);color:var(--muted);
    width:max-content;line-height:1.7;
  }
  .badge-signal{background:var(--signal);color:var(--ink);font-weight:600}
  .cell-mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:14px;color:var(--ink)}
  .cell{font-size:14px;color:var(--muted);line-height:1.75}

  /* ---------- 场景卡片 ---------- */
  .cards{display:grid;gap:20px;grid-template-columns:1fr}
  @media (min-width:640px){.cards{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.cards{grid-template-columns:repeat(4,1fr)}}
  .card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    overflow:hidden;display:flex;flex-direction:column;
    box-shadow:var(--shadow-sm);
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  }
  .card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:var(--ink)}
  .card-media{aspect-ratio:16/10;overflow:hidden;background:var(--paper2)}
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
  .card:hover .card-media img{transform:scale(1.03)}
  .card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
  .card-body h3{font-size:17px}
  .card-body p{font-size:14px;color:var(--muted);line-height:1.8}
  .card-foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--weak);display:flex;justify-content:space-between;align-items:center;gap:10px}

  /* ---------- 流程 ---------- */
  .flow{display:grid;gap:18px;grid-template-columns:1fr}
  @media (min-width:640px){.flow{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.flow{grid-template-columns:repeat(5,1fr)}}
  .flow-step{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    padding:20px;position:relative;
    transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .flow-step:hover{transform:translateY(-2px);border-color:var(--ink);box-shadow:var(--shadow-lg)}
  .flow-step .step-no{font-family:var(--font-mono);font-size:13px;color:var(--ink);background:var(--signal);border-radius:var(--r-sm);padding:2px 8px;display:inline-block}
  .flow-step h3{font-size:16px;margin-top:14px}
  .flow-step p{font-size:14px;color:var(--muted);margin-top:6px;line-height:1.75}

  /* ---------- FAQ ---------- */
  .faq-list{border-top:1px solid var(--line)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{
    width:100%;background:transparent;border:0;cursor:pointer;
    display:flex;align-items:center;justify-content:space-between;gap:20px;
    padding:22px 4px;text-align:left;font-size:16px;font-weight:600;color:var(--ink);
    transition:color .2s var(--ease),background .2s var(--ease);
  }
  .faq-q:hover{background:#fff}
  .faq-icon{position:relative;width:16px;height:16px;flex:0 0 auto}
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;background:var(--ink);border-radius:2px;
    transition:transform .22s var(--ease),opacity .22s var(--ease);
  }
  .faq-icon::before{left:0;top:7px;width:16px;height:2px}
  .faq-icon::after{top:0;left:7px;width:2px;height:16px}
  .faq-item.is-open .faq-icon::after{transform:scaleY(0)}
  .faq-item.is-open .faq-q{color:var(--ink)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease)}
  .faq-a p{padding:0 4px 24px;color:var(--muted);font-size:15px;line-height:1.9;max-width:62ch}

  /* ---------- CTA ---------- */
  .cta-band{background:var(--ink);color:#fff;padding:64px 0}
  @media (min-width:780px){.cta-band{padding:88px 0}}
  .cta-grid{display:grid;gap:40px}
  @media (min-width:1024px){.cta-grid{grid-template-columns:1fr .92fr;gap:64px;align-items:start}}
  .cta-band h2{font-size:clamp(1.5rem,3vw,2.1rem);color:#fff}
  .cta-band .lead{margin-top:16px;color:rgba(255,255,255,.72);font-size:16px;max-width:32em}
  .cta-points{margin-top:28px;display:grid;gap:12px}
  .cta-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.86)}
  .cta-points li::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--signal);margin-top:9px;flex:0 0 auto}
  .form-card{
    background:var(--paper);color:var(--ink);
    border-radius:var(--r-lg);padding:26px;border:1px solid rgba(255,255,255,.14);
    box-shadow:var(--shadow-lg);
  }
  @media (min-width:780px){.form-card{padding:32px}}
  .form-card h3{font-size:19px}
  .form-card .hint{margin-top:8px;font-size:13px;color:var(--muted)}
  .field{margin-top:20px}
  .field label{display:block;font-size:13px;font-weight:600;color:var(--muted);margin-bottom:6px}
  .field input,.field textarea,.field select{
    width:100%;background:transparent;border:0;
    border-bottom:1px solid var(--line);
    padding:10px 2px;font-size:15px;
    transition:border-color .2s var(--ease),border-width .2s var(--ease);
  }
  .field textarea{resize:vertical;min-height:78px;line-height:1.8}
  .field input:focus,.field textarea:focus,.field select:focus{
    outline:none;border-bottom:2px solid var(--signal);
  }
  .field.has-error input,.field.has-error textarea{border-bottom:2px solid var(--error)}
  .field .err{display:none;font-size:12px;color:var(--error);margin-top:6px}
  .field.has-error .err{display:block}
  .check-row{display:flex;gap:10px;align-items:flex-start;margin-top:20px;font-size:13px;color:var(--muted)}
  .check-row input{width:18px;height:18px;flex:0 0 auto;margin-top:4px;accent-color:#14171A}
  .form-msg{margin-top:16px;font-size:13px;min-height:20px}
  .form-msg.ok{color:var(--success)}
  .form-msg.bad{color:var(--error)}
  .form-card .btn-primary{width:100%;margin-top:22px}

  /* ---------- footer ---------- */
  .site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 32px;font-size:14px}
  .footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
  @media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}}
  .footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.01em}
  .footer-col a{display:block;padding:6px 0;color:rgba(255,255,255,.72);transition:color .2s var(--ease)}
  .footer-col a:hover{color:var(--signal)}
  .footer-col p{margin-bottom:8px;line-height:1.8}
  .footer-brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:#fff;margin-bottom:14px}
  .footer-desc{max-width:34ch}
  .footer-meta{font-family:var(--font-mono);font-size:13px;color:rgba(255,255,255,.5)}
  .footer-qr{
    margin-top:12px;width:104px;height:104px;border-radius:var(--r-sm);
    border:1px dashed rgba(255,255,255,.28);
    display:flex;align-items:center;justify-content:center;
    font-size:12px;color:rgba(255,255,255,.55);text-align:center;padding:10px;
  }
  .footer-bottom{
    margin-top:48px;padding-top:22px;
    border-top:1px solid rgba(255,255,255,.12);
    display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;
    font-size:13px;color:rgba(255,255,255,.55);
  }
  @media (min-width:1024px){
    .footer-grid > .footer-col + .footer-col{border-left:1px solid rgba(255,255,255,.12);padding-left:32px}
  }

  /* ---------- motion ---------- */
  @keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
  .hero-anim > *{animation:fadeUp .7s var(--ease) both}
  .hero-anim > *:nth-child(2){animation-delay:.07s}
  .hero-anim > *:nth-child(3){animation-delay:.14s}
  .hero-anim > *:nth-child(4){animation-delay:.21s}
  .hero-anim > *:nth-child(5){animation-delay:.28s}
  .hero-figure img{animation:fadeUp .9s var(--ease) both, softZoom 6s var(--ease) .4s both}
  @keyframes softZoom{from{transform:scale(1)}to{transform:scale(1.02)}}

  @media (prefers-reduced-motion: reduce){
    *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
    .hero-figure img{transform:none}
  }

/* roulang page: category4 */
:root{
  --ink:#14171A;
  --ink-soft:#2A2F34;
  --signal:#C9F24D;
  --paper:#F5F4F0;
  --paper-2:#EAE8E1;
  --white:#FFFFFF;
  --line:#E2E0D8;
  --text:#14171A;
  --text-2:#5B6570;
  --text-3:#8B929A;
  --success:#2E9E6B;
  --danger:#B4432B;
  --r-sm:8px;
  --r-card:16px;
  --r-lg:24px;
  --r-pill:999px;
  --shadow-sm:0 1px 2px rgba(20,23,26,.05);
  --shadow-lg:0 24px 48px -28px rgba(20,23,26,.35);
  --font-sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Consolas, "Courier New", monospace;
  --container:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.025em;line-height:1.18}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--signal);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
@media (min-width:1280px){.container{max-width:1240px;padding:0 48px}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(245,244,240,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--ease), background .25s var(--ease);
}
.site-header.is-stuck{border-bottom-color:var(--line);background:rgba(255,255,255,.94)}
.header-inner{display:flex;align-items:center;gap:14px;min-height:70px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:800;letter-spacing:-.02em;flex:none}
.brand-mark{width:13px;height:13px;border-radius:3px;background:var(--signal);box-shadow:inset 0 0 0 3px var(--ink);flex:none}
.brand-text{white-space:nowrap}
.nav-tabs{display:flex;align-items:center;gap:8px;flex:1;margin-left:10px;overflow-x:auto;scrollbar-width:none}
.nav-tabs::-webkit-scrollbar{display:none}
.tab{
  flex:none;display:inline-flex;align-items:center;height:34px;padding:0 14px;
  border-radius:var(--r-pill);border:1px solid var(--line);
  font-size:13.5px;color:var(--text-2);white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.tab:hover{color:var(--ink);border-color:var(--ink)}
.tab.is-active{background:var(--signal);border-color:var(--signal);color:var(--ink);font-weight:600}
.header-cta{flex:none}
@media (max-width:1023px){
  .header-inner{flex-wrap:wrap;padding-top:10px;padding-bottom:10px;gap:10px}
  .brand{order:1}
  .header-cta{order:2;margin-left:auto}
  .nav-tabs{order:3;flex-basis:100%;margin-left:0;padding-bottom:2px}
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-sm);
  border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--signal);color:var(--ink);border-color:var(--signal)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink);background:#fff}
.btn .arrow{transition:transform .2s var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}
.link-underline{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  border-bottom:1px solid var(--ink);padding-bottom:2px;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.link-underline:hover{background:var(--signal);border-color:var(--signal)}

/* ---------- Shared section ---------- */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:84px 0}}
@media (min-width:1280px){.section{padding:100px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2rem)}
.section-sub{margin:10px 0 0;max-width:60ch;color:var(--text-2);font-size:15px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--ink);
  background:var(--signal);border-radius:var(--r-pill);padding:5px 12px;margin-bottom:18px;
}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  border-radius:var(--r-pill);background:var(--paper-2);color:var(--text-2);
  font-size:12.5px;font-weight:600;white-space:nowrap;
}
.badge-signal{background:var(--signal);color:var(--ink)}

/* ---------- Hero ---------- */
.page-hero{
  background:var(--paper-2);
  border-bottom:1px solid var(--line);
  padding:42px 0 56px;
}
@media (min-width:1024px){.page-hero{padding:56px 0 76px}}
.hero-grid{display:grid;gap:36px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px}}
.crumbs{font-size:13px;color:var(--text-3);margin-bottom:20px;display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.crumbs a{transition:color .2s var(--ease)}
.crumbs a:hover{color:var(--ink)}
.crumbs .current{max-width:22ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-2)}
.page-hero h1{
  font-size:clamp(1.9rem,4.2vw,3rem);
  max-width:22ch;
  margin-bottom:18px;
}
.hero-lead{max-width:56ch;color:var(--text-2);font-size:16px;line-height:1.95}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px;margin-top:34px;padding-top:26px;border-top:1px solid rgba(20,23,26,.12)}
.metrics li{display:flex;flex-direction:column;gap:4px}
.metrics .num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:26px;font-weight:700;letter-spacing:-.02em;line-height:1.1}
.metrics .lbl{font-size:13px;color:var(--text-2)}
.hero-media{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-sm)}
.hero-media img{aspect-ratio:16/11;object-fit:cover;width:100%;transition:transform .4s var(--ease)}
.hero-media:hover img{transform:scale(1.02)}
.hero-media figcaption{
  position:absolute;left:16px;bottom:16px;
  background:rgba(20,23,26,.86);color:#fff;
  font-size:12.5px;padding:7px 12px;border-radius:var(--r-pill);
}

/* ---------- Filters ---------- */
.filters{margin-bottom:24px}
.chip{
  display:inline-flex;align-items:center;height:34px;padding:0 15px;
  border-radius:var(--r-pill);border:1px solid var(--line);background:transparent;
  color:var(--text-2);font-size:13.5px;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.chip:hover{color:var(--ink);border-color:var(--ink)}
.chip.is-active{background:var(--signal);border-color:var(--signal);color:var(--ink);font-weight:600}

/* ---------- Feed ---------- */
.feed-layout{display:grid;gap:40px}
@media (min-width:1024px){.feed-layout{grid-template-columns:minmax(0,1fr) 320px;gap:48px}}
.feed-main{border-top:1px solid var(--line)}
.feed-item{
  padding:22px 16px;border-bottom:1px solid var(--line);border-radius:var(--r-card);
  transition:background .2s var(--ease),box-shadow .2s var(--ease);
}
.feed-item:hover{background:#fff;box-shadow:var(--shadow-sm)}
.feed-item.is-hidden{display:none}
@media (min-width:640px){
  .feed-item{display:grid;grid-template-columns:104px minmax(0,1fr);gap:0 20px;padding:24px 18px}
}
.feed-date{font-size:12.5px;color:var(--text-3);padding-top:5px}
.feed-body h3{font-size:17.5px;margin-bottom:8px}
.feed-body h3 a{transition:color .2s var(--ease)}
.feed-body h3 a:hover{color:var(--text-2)}
.feed-body p{color:var(--text-2);font-size:14.5px;line-height:1.85;margin-bottom:10px}
.feed-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.5px;color:var(--text-3)}
.feed-meta .dot{color:var(--line)}
.feed-empty{
  display:none;text-align:center;padding:48px 20px;border:1px dashed var(--line);
  border-radius:var(--r-card);color:var(--text-2);font-size:14.5px
}
.feed-empty.is-visible{display:block}
.feed-empty .btn{margin-top:16px}

/* ---------- Side cards ---------- */
.feed-side{display:grid;gap:20px;align-content:start}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow-sm);
}
.side-card h3{font-size:16px;margin-bottom:10px}
.side-card p{font-size:14px;color:var(--text-2);line-height:1.85;margin-bottom:12px}
.side-tel{font-family:var(--font-mono);font-size:19px;font-weight:700;letter-spacing:-.01em;display:block;margin-bottom:14px}
.side-card--accent{background:var(--ink);border-color:var(--ink);color:#fff}
.side-card--accent p{color:rgba(255,255,255,.72)}
.rank{display:grid;gap:12px;counter-reset:rank}
.rank li{display:grid;grid-template-columns:26px minmax(0,1fr);gap:10px;align-items:start;font-size:14px;color:var(--text-2)}
.rank li::before{
  counter-increment:rank;content:counter(rank,decimal-leading-zero);
  font-family:var(--font-mono);font-size:12.5px;color:var(--ink);
  background:var(--paper-2);border-radius:6px;text-align:center;line-height:22px;height:22px;
}
.rank li:hover{color:var(--ink)}

/* ---------- Topic rail ---------- */
.topic-rail{display:flex;gap:20px;overflow-x:auto;padding:4px 4px 14px;scroll-snap-type:x mandatory;scrollbar-width:none}
.topic-rail::-webkit-scrollbar{display:none}
.topic-card{
  flex:0 0 250px;scroll-snap-align:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;padding-bottom:18px;
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.topic-card:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.topic-cover{position:relative;overflow:hidden;margin-bottom:14px}
.topic-cover img{aspect-ratio:3/4;object-fit:cover;width:100%;transition:transform .25s var(--ease)}
.topic-card:hover .topic-cover img{transform:scale(1.03)}
.topic-cover .hot{
  position:absolute;left:12px;top:12px;background:var(--signal);color:var(--ink);
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:var(--r-pill);
}
.topic-card h3{font-size:16px;padding:0 16px;margin-bottom:8px}
.topic-card p{font-size:13.5px;color:var(--text-2);line-height:1.8;padding:0 16px;margin:0}

/* ---------- Data strip ---------- */
.stat-band{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:32px;display:grid;gap:26px}
@media (min-width:900px){.stat-band{grid-template-columns:280px minmax(0,1fr);gap:48px;align-items:center;padding:40px}}
.stat-band h2{font-size:clamp(1.35rem,2.2vw,1.75rem)}
.stat-band .note{color:var(--text-2);font-size:14px;margin-top:12px}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:22px}
.stat-grid div{border-left:2px solid var(--signal);padding-left:16px}
.stat-grid .num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:30px;font-weight:700;letter-spacing:-.02em;line-height:1.1}
.stat-grid .lbl{font-size:13px;color:var(--text-2);margin-top:6px;display:block}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  background:none;border:0;padding:22px 4px;text-align:left;cursor:pointer;
  font-size:16.5px;font-weight:700;letter-spacing:-.02em;line-height:1.5;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--text-2)}
.faq-sign{font-family:var(--font-mono);font-size:20px;line-height:1;padding-top:4px;color:var(--text-2)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease)}
.faq-a p{color:var(--text-2);font-size:14.5px;line-height:1.9;padding:0 4px 22px;max-width:78ch}
.faq-item.is-open .faq-sign{color:var(--ink)}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:var(--ink);color:#fff;padding:34px 24px;
  display:grid;gap:34px;
}
.cta-panel::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  opacity:.16;
}
.cta-copy,.cta-form{position:relative;z-index:1}
@media (min-width:1024px){
  .cta-panel{grid-template-columns:minmax(0,1fr) 400px;padding:48px;gap:48px;align-items:start}
}
.cta-copy h2{font-size:clamp(1.5rem,2.8vw,2.1rem);margin-bottom:14px}
.cta-copy p{color:rgba(255,255,255,.74);font-size:15px;max-width:52ch}
.cta-list{display:grid;gap:12px;margin-top:22px}
.cta-list li{position:relative;padding-left:24px;font-size:14.5px;color:rgba(255,255,255,.86)}
.cta-list li::before{
  content:"";position:absolute;left:0;top:10px;width:10px;height:10px;border-radius:2px;
  background:var(--signal);
}
.cta-form{background:var(--paper);color:var(--ink);border-radius:var(--r-lg);padding:24px}
.cta-form h3{font-size:17px;margin-bottom:6px}
.cta-form .form-hint{font-size:13px;color:var(--text-2);margin-bottom:18px}
.field{display:flex;flex-direction:column;gap:2px;margin-bottom:16px}
.field label{font-size:13px;color:var(--text-2);font-weight:600}
.field input,.field select,.field textarea{
  width:100%;background:transparent;border:0;border-bottom:1px solid var(--line);
  padding:9px 2px 10px;font-size:15px;border-radius:0;
  transition:border-color .2s var(--ease),padding-bottom .2s var(--ease);
}
.field textarea{resize:vertical;min-height:64px}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-bottom:2px solid var(--signal);padding-bottom:9px;
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-2) 50%),linear-gradient(135deg,var(--text-2) 50%,transparent 50%);background-position:calc(100% - 14px) 18px,calc(100% - 9px) 18px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field-row{display:grid;gap:0 18px}
@media (min-width:560px){.field-row{grid-template-columns:1fr 1fr}}
.check{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-2);margin:6px 0 18px}
.check input{width:17px;height:17px;margin-top:3px;accent-color:#14171A;flex:none}
.form-tip{font-size:13px;margin-top:14px;display:none}
.form-tip.is-error{display:block;color:var(--danger)}
.form-tip.is-ok{display:block;color:var(--success)}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.78);margin-top:20px;padding:56px 0 26px}
.footer-grid{display:grid;gap:34px}
@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:0}
  .footer-col{padding:0 28px}
  .footer-col:first-child{padding-left:0}
  .footer-col:last-child{padding-right:0}
  .footer-col + .footer-col{border-left:1px solid rgba(255,255,255,.12)}
}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:800;letter-spacing:-.02em;margin-bottom:14px}
.footer-desc{font-size:14px;line-height:1.9;color:rgba(255,255,255,.7);max-width:34ch}
.footer-meta{font-size:12.5px;color:rgba(255,255,255,.5);margin-top:12px}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:0}
.footer-col a,.footer-col p{display:block;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:11px;transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--signal)}
.footer-qr{
  width:104px;height:104px;border:1px dashed rgba(255,255,255,.28);border-radius:var(--r-sm);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;color:rgba(255,255,255,.55);padding:10px;margin-top:6px;
}
.footer-bottom{
  margin-top:42px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.55);
}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}