/* roulang page: index */
:root{
  --ink:#101114;
  --paper:#F6F4EF;
  --card:#FFFFFF;
  --surface:#EFECE4;
  --lime:#C9F24C;
  --gray:#6E6F6A;
  --line:#E3DFD6;
  --ok:#3F9E6A;
  --warn:#D98A2B;
  --err:#C4553F;
  --r-card:20px;
  --r-media:20px;
  --r-btn:999px;
  --r-btn-2:12px;
  --r-input:12px;
  --sh-1:0 1px 2px rgba(16,17,20,.04);
  --sh-2:0 18px 40px -20px rgba(16,17,20,.28);
  --t:200ms cubic-bezier(.2,.7,.3,1);
  --font-cn:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:16.5px;
  font-weight:400;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden}
img{display:block;max-width:100%;height:auto;border-radius:var(--r-media)}
figure{margin:0}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;font-weight:900;letter-spacing:-.02em;line-height:1.25}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input,textarea,select{font:inherit}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
::selection{background:var(--lime);color:var(--ink)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- layout ---------- */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px}
.section{padding:120px 0}
.section-tight{padding:88px 0}
.section-surface{background:var(--surface)}
.section-ink{background:var(--ink);color:var(--paper)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px}
.sec-head h2{font-size:clamp(1.6rem,3vw,2.6rem)}
.sec-head p{margin-top:12px;color:var(--gray);max-width:620px;font-size:15.5px}
.eyebrow{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--gray);margin-bottom:14px}
.on-ink .eyebrow,.section-ink .eyebrow{color:rgba(246,244,239,.6)}
.link-more{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:700;white-space:nowrap}
.link-more i{transition:transform var(--t)}
.link-more:hover i{transform:translateX(4px)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:13px 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;border:1px solid transparent;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-dark{background:var(--ink);color:var(--paper)}
.btn-dark:hover{background:var(--lime);color:var(--ink);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-lime{background:var(--lime);color:var(--ink)}
.btn-lime:hover{background:var(--card);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-line{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-line:hover{background:var(--ink);color:var(--paper);transform:translateY(-2px)}
.btn-line-light{border-color:rgba(246,244,239,.55);color:var(--paper);background:transparent}
.btn-line-light:hover{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.btn-ghost{border-color:var(--line);background:var(--card);color:var(--ink);border-radius:var(--r-btn-2)}
.btn-ghost:hover{border-color:var(--ink)}
.btn:disabled,.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- badges ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.02em;background:var(--card);border:1px solid var(--line);color:var(--gray)}
.badge-lime{background:var(--lime);border-color:var(--lime);color:var(--ink)}
.badge-soft{background:var(--surface);border-color:var(--surface);color:var(--gray)}

/* ---------- topbar ---------- */
.topbar{background:var(--ink);color:rgba(246,244,239,.86);font-size:14px}
.topbar-in{display:flex;align-items:center;gap:14px;min-height:46px}
.topbar .dot{width:8px;height:8px;border-radius:999px;background:var(--lime);flex:0 0 auto}
.topbar p{flex:1 1 auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.topbar a{display:inline-flex;align-items:center;gap:6px;font-weight:700;white-space:nowrap;color:var(--lime)}
.topbar a i{transition:transform var(--t)}
.topbar a:hover i{transform:translateX(4px)}

/* ---------- header / card nav ---------- */
.site-header{position:sticky;top:0;z-index:80;padding:12px 0 0;transition:padding var(--t)}
.site-header.is-shrunk{padding:8px 0 0}
.nav-card{
  display:flex;align-items:center;gap:20px;
  background:var(--paper);border:1px solid var(--line);border-radius:22px;
  padding:12px 16px;box-shadow:var(--sh-1);
  transition:box-shadow var(--t),border-color var(--t),padding var(--t),background var(--t);
}
.site-header.is-shrunk .nav-card{padding:8px 14px;background:rgba(246,244,239,.96);box-shadow:0 10px 30px -22px rgba(16,17,20,.4);border-color:var(--line)}
.brand{display:flex;align-items:center;gap:12px;padding:6px 8px;border-radius:14px;flex:0 0 auto}
.brand-mark{width:40px;height:40px;border-radius:12px;background:var(--ink);color:var(--lime);display:grid;place-items:center;font-weight:900;font-size:19px;letter-spacing:-.02em}
.brand-tx{display:flex;flex-direction:column;line-height:1.3}
.brand-tx strong{font-size:17px;font-weight:900;letter-spacing:-.01em}
.brand-tx em{font-style:normal;font-size:12px;color:var(--gray);letter-spacing:.04em}
.nav-tiles{display:flex;align-items:center;gap:8px;flex:1 1 auto;min-width:0}
.nav-tile{
  display:flex;align-items:center;gap:10px;flex:1 1 0;min-width:0;
  padding:10px 12px;border-radius:14px;border:1px solid transparent;background:transparent;
  transition:background var(--t),border-color var(--t),color var(--t);
}
.nav-tile:hover{background:var(--surface);border-color:var(--lime)}
.nav-tile.is-active{background:var(--ink);color:var(--paper)}
.nav-tile.is-active .nav-tile-tx em{color:rgba(246,244,239,.62)}
.nav-tile.is-active .nav-tile-ic{background:rgba(201,242,76,.16);color:var(--lime)}
.nav-tile-ic{width:30px;height:30px;flex:0 0 auto;border-radius:9px;background:var(--surface);display:grid;place-items:center;font-size:13px;color:var(--ink);transition:background var(--t),color var(--t)}
.nav-tile-tx{display:flex;flex-direction:column;min-width:0;line-height:1.35}
.nav-tile-tx strong{font-size:14px;font-weight:700;white-space:nowrap}
.nav-tile-tx em{font-style:normal;font-size:11.5px;color:var(--gray);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-burger{display:none;width:46px;height:46px;border-radius:14px;border:1px solid var(--line);background:var(--card);align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform var(--t),opacity var(--t)}
body.nav-open .nav-burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.nav-open .nav-burger span:nth-child(2){opacity:0}
body.nav-open .nav-burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* drawer */
.nav-drawer{
  position:fixed;top:0;right:0;height:100%;width:min(88vw,380px);z-index:90;
  background:var(--paper);border-left:1px solid var(--line);
  padding:28px 22px;overflow-y:auto;
  transform:translateX(102%);transition:transform 260ms cubic-bezier(.2,.7,.3,1);
  box-shadow:-24px 0 60px -34px rgba(16,17,20,.5);
}
body.nav-open .nav-drawer{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-head strong{font-size:16px;font-weight:900}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--card);display:grid;place-items:center}
.drawer-list{display:flex;flex-direction:column;gap:8px;margin-bottom:22px}
.drawer-list a{display:flex;align-items:center;gap:12px;padding:14px;border-radius:14px;border:1px solid var(--line);background:var(--card);min-height:44px;transition:border-color var(--t),background var(--t)}
.drawer-list a:hover{border-color:var(--lime);background:var(--surface)}
.drawer-list a.is-active{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.drawer-list a.is-active em{color:rgba(246,244,239,.6)}
.drawer-list b{font-size:15px;font-weight:700;display:block}
.drawer-list em{font-style:normal;font-size:12.5px;color:var(--gray);display:block}
.drawer-list i.di{width:32px;height:32px;border-radius:10px;background:var(--surface);display:grid;place-items:center;font-size:13px;flex:0 0 auto}
.drawer-list a.is-active i.di{background:rgba(201,242,76,.16);color:var(--lime)}
.drawer-cta{display:flex;flex-direction:column;gap:10px}
.drawer-cta .btn{width:100%}
.nav-mask{position:fixed;inset:0;background:rgba(16,17,20,.42);z-index:85;opacity:0;pointer-events:none;transition:opacity var(--t)}
body.nav-open .nav-mask{opacity:1;pointer-events:auto}

/* ---------- hero ---------- */
.hero-wrap{padding:20px 0 0}
.hero{
  position:relative;border-radius:28px;overflow:hidden;color:var(--paper);
  background-image:linear-gradient(115deg,rgba(16,17,20,.9) 0%,rgba(16,17,20,.78) 46%,rgba(16,17,20,.6) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center right;
  padding:72px 56px 56px;
}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:end}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;border:1px solid rgba(246,244,239,.28);font-size:12.5px;letter-spacing:.04em;color:rgba(246,244,239,.86)}
.hero-tag::before{content:"";width:6px;height:6px;border-radius:999px;background:var(--lime)}
.hero h1{font-size:clamp(2.6rem,6vw,4.8rem);margin:22px 0 0;color:#fff}
.hero-sub{margin-top:20px;max-width:560px;font-size:17px;line-height:1.8;color:rgba(246,244,239,.82)}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-figure{border-radius:var(--r-media);overflow:hidden;border:1px solid rgba(246,244,239,.18);transform:translateY(8px)}
.hero-figure img{width:100%;border-radius:0;object-fit:cover;aspect-ratio:16/10}
.hero-stats{
  position:absolute;right:32px;bottom:32px;display:flex;
  background:rgba(16,17,20,.72);border:1px solid rgba(246,244,239,.18);border-radius:18px;overflow:hidden;
}
.stat{padding:14px 22px;border-left:1px solid rgba(246,244,239,.14)}
.stat:first-child{border-left:0}
.stat b{display:block;font-size:26px;font-weight:900;line-height:1.2;color:var(--lime);letter-spacing:-.02em}
.stat span{display:block;font-size:12.5px;color:rgba(246,244,239,.7);white-space:nowrap}

/* ---------- brand band ---------- */
.band-ink{background:var(--ink);color:var(--paper)}
.band-in{padding:120px 0;display:grid;gap:26px}
.band-line{width:70px;height:3px;background:var(--lime);border-radius:3px}
.band-title{font-size:clamp(1.9rem,4.4vw,3.4rem);max-width:900px;color:#fff;letter-spacing:-.025em}
.band-sub{max-width:720px;color:rgba(246,244,239,.72);font-size:16.5px}

/* ---------- story ---------- */
.story-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:64px;align-items:start}
.story-figure{border-radius:var(--r-media);overflow:hidden;border:1px solid var(--line);background:var(--surface)}
.story-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0}
.story-body h2{font-size:clamp(1.6rem,3vw,2.5rem);margin-bottom:18px}
.story-body>p{color:var(--gray);margin-bottom:34px;max-width:640px}
.timeline{position:relative;padding-left:26px}
.timeline::before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:1px;background:var(--ink)}
.timeline li{position:relative;padding:0 0 26px}
.timeline li:last-child{padding-bottom:0}
.timeline li::before{content:"";position:absolute;left:-26px;top:9px;width:11px;height:11px;border-radius:999px;background:var(--paper);border:2px solid var(--ink)}
.timeline li:first-child::before{background:var(--lime);border-color:var(--ink)}
.timeline .tl-year{display:block;font-size:13px;font-weight:900;letter-spacing:.06em;color:var(--gray)}
.timeline .tl-title{display:block;font-size:17px;font-weight:900;margin:2px 0 4px;letter-spacing:-.01em}
.timeline .tl-desc{display:block;font-size:14.5px;color:var(--gray);line-height:1.75}

/* ---------- feature cards ---------- */
.feature-grid{display:grid;grid-template-columns:7fr 5fr;grid-auto-rows:min-content;gap:24px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(201,242,76,.9)}
.card:hover .card-media img{transform:scale(1.04)}
.card-media{overflow:hidden;background:var(--surface)}
.card-media img{width:100%;object-fit:cover;border-radius:0;transition:transform 420ms cubic-bezier(.2,.7,.3,1);aspect-ratio:16/10}
.card-sm .card-media img{aspect-ratio:16/10}
.card-body{padding:26px 28px 28px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto}
.card-body h3{font-size:1.25rem}
.card-body p{color:var(--gray);font-size:15px}
.card-lg{grid-row:span 2}
.card-lg .card-media img{aspect-ratio:16/10}
.card-lg .card-body h3{font-size:clamp(1.3rem,2.1vw,1.7rem)}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:14.5px;margin-top:auto;padding-top:6px}
.link-arrow i{transition:transform var(--t)}
.link-arrow:hover i{transform:translateX(4px)}
.link-arrow::after{content:"";display:none}

/* ---------- news list (CMS) ---------- */
.news-list{border-top:1px solid var(--line)}
.news-row{
  display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;
  padding:26px 18px 26px 0;border-bottom:1px solid var(--line);
  transition:background var(--t),padding-left var(--t);
}
.news-row:hover{background:var(--paper);padding-left:16px}
.news-main{min-width:0}
.news-main h3{font-size:17.5px;margin:10px 0 8px;transition:color var(--t)}
.news-main p{color:var(--gray);font-size:14.5px;max-width:760px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.news-date{font-size:14px;color:var(--gray);white-space:nowrap;font-variant-numeric:tabular-nums}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-card);background:var(--card);
  padding:48px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px;
}
.empty-ic{width:52px;height:52px;border-radius:16px;background:var(--surface);display:grid;place-items:center;color:var(--gray);font-size:20px}
.empty-state p{color:var(--gray)}

/* ---------- trust ---------- */
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:42px}
.trust-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:30px 26px;box-shadow:var(--sh-1);transition:border-color var(--t),transform var(--t),box-shadow var(--t)}
.trust-item:hover{border-color:rgba(201,242,76,.9);transform:translateY(-4px);box-shadow:var(--sh-2)}
.trust-item b{display:block;font-size:clamp(2rem,4vw,2.8rem);font-weight:900;letter-spacing:-.03em;line-height:1.1}
.trust-item b .u{font-size:15px;font-weight:700;color:var(--gray);margin-left:4px;letter-spacing:0}
.trust-item span{display:block;margin-top:10px;color:var(--gray);font-size:14.5px}
.trust-line{display:flex;flex-wrap:wrap;gap:10px 26px;align-items:center;color:var(--gray);font-size:14.5px;border-top:1px solid var(--line);padding-top:24px}
.trust-line i{color:var(--lime);margin-right:6px}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:56px;align-items:start}
.faq-side h2{font-size:clamp(1.6rem,3vw,2.4rem);margin-bottom:16px}
.faq-side p{color:var(--gray);max-width:380px}
.faq-side .btn{margin-top:26px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 4px;font-size:17px;font-weight:700;transition:color var(--t),padding-left var(--t);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--ink);padding-left:12px}
.faq-item summary .faq-ic{width:32px;height:32px;flex:0 0 auto;border-radius:999px;border:1px solid var(--line);display:grid;place-items:center;font-size:12px;transition:transform var(--t),background var(--t),border-color var(--t)}
.faq-item[open] summary .faq-ic{transform:rotate(180deg);background:var(--lime);border-color:var(--lime)}
.faq-body{padding:0 4px 26px;color:var(--gray);background:transparent;max-width:760px}

/* ---------- cta ---------- */
.cta-band{background:var(--ink);color:var(--paper);padding:104px 0}
.cta-inner{text-align:center;display:flex;flex-direction:column;align-items:center;gap:20px}
.cta-inner h2{font-size:clamp(1.9rem,4.2vw,3rem);color:#fff;max-width:820px}
.cta-inner>p{color:rgba(246,244,239,.74);max-width:640px}
.sub-card{
  width:min(720px,100%);margin-top:18px;background:var(--card);color:var(--ink);
  border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-2);text-align:left;
}
.sub-form{display:grid;grid-template-columns:1fr auto;gap:12px}
.sub-form input{
  width:100%;padding:14px 16px;border-radius:var(--r-input);
  border:1px solid var(--line);background:var(--paper);color:var(--ink);
  transition:border-color var(--t),box-shadow var(--t);
}
.sub-form input::placeholder{color:#9C9C95}
.sub-form input:focus{outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(201,242,76,.35)}
.sub-form input.is-error{border-color:var(--err)}
.form-note{margin-top:14px;font-size:13.5px;color:var(--gray)}
.form-msg{margin-top:10px;font-size:14px;display:none}
.form-msg.show{display:block}
.form-msg.err{color:var(--err)}
.form-msg.ok{color:var(--ok)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(246,244,239,.8);padding:88px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px}
.footer-brand strong{display:block;font-size:19px;font-weight:900;color:#fff;margin-bottom:14px;letter-spacing:-.01em}
.footer-brand p{font-size:14.5px;line-height:1.85;max-width:340px}
.footer-col h4{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:rgba(246,244,239,.55);margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14.5px;transition:color var(--t),padding-left var(--t)}
.footer-col a:hover{color:var(--lime);padding-left:4px}
.footer-col p{font-size:14.5px;line-height:1.9}
.footer-col p b{color:#fff;font-weight:700}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(246,244,239,.14);
  display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;font-size:13.5px;color:rgba(246,244,239,.6);
}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 420ms cubic-bezier(.2,.7,.3,1),transform 420ms cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:60ms}
.reveal.d2{transition-delay:120ms}
.reveal.d3{transition-delay:180ms}
.skeleton{background:var(--surface);border-radius:12px;position:relative;overflow:hidden}
.skeleton::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.7),transparent);animation:shimmer 1.4s infinite}
@keyframes shimmer{from{transform:translateX(-100%)}to{transform:translateX(100%)}}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* ---------- responsive ---------- */
@media (max-width:1439px){
  .container{max-width:1180px}
}
@media (max-width:1199px){
  .nav-tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
  .nav-card{flex-wrap:wrap}
  .nav-tiles{order:3;width:100%}
  .nav-actions{margin-left:auto}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero{padding:56px 40px 48px}
  .hero-stats{position:static;margin-top:36px;width:100%;justify-content:space-between}
  .stat{flex:1 1 0;text-align:left}
  .feature-grid{grid-template-columns:1fr 1fr}
  .card-lg{grid-row:span 1;grid-column:span 2}
  .story-grid{gap:44px}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
}
@media (max-width:1023px){
  .section{padding:88px 0}
  .container{padding:0 28px}
  .nav-tiles{display:none}
  .nav-burger{display:flex}
  .band-in{padding:88px 0}
  .story-grid{grid-template-columns:1fr}
  .story-figure{order:-1}
  .trust-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-band{padding:80px 0}
}
@media (max-width:767px){
  body{font-size:16px}
  .section{padding:64px 0}
  .container{padding:0 20px}
  .topbar p{white-space:normal;line-height:1.6;padding:4px 0}
  .topbar-in{flex-wrap:wrap;gap:8px;padding:8px 0}
  .hero{border-radius:22px;padding:40px 22px 32px}
  .hero h1{font-size:clamp(2rem,7.6vw,2.6rem)}
  .hero-sub{font-size:15.5px}
  .hero-cta .btn{width:100%}
  .hero-stats{flex-direction:column;border-radius:16px}
  .stat{border-left:0;border-top:1px solid rgba(246,244,239,.14);padding:12px 18px;display:flex;align-items:baseline;gap:12px}
  .stat:first-child{border-top:0}
  .stat b{font-size:22px}
  .feature-grid{grid-template-columns:1fr}
  .card-lg{grid-column:span 1}
  .card-body{padding:20px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .news-row{grid-template-columns:1fr;gap:10px;padding:22px 0}
  .news-row:hover{padding-left:8px}
  .trust-grid{grid-template-columns:1fr;gap:16px}
  .trust-item{padding:24px 20px}
  .faq-item summary{font-size:16px;padding:20px 0}
  .sub-card{padding:20px}
  .sub-form{grid-template-columns:1fr}
  .sub-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:10px}
  .btn{padding:12px 22px}
}
@media (max-width:480px){
  h1{font-size:2rem}
  .brand-tx em{display:none}
  .nav-tile-tx em{display:none}
  .hero{padding:32px 18px 26px}
  .cta-band{padding:64px 0}
}

/* roulang page: category1 */
:root{
  --ink:#101114;
  --paper:#F6F4EF;
  --card:#FFFFFF;
  --muted:#EFECE4;
  --lime:#C9F24C;
  --gray:#6E6F6A;
  --line:#E3DFD6;
  --success:#3F9E6A;
  --warn:#D98A2B;
  --error:#C4553F;
  --r-card:20px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,17,20,.04);
  --sh-2:0 18px 40px -20px rgba(16,17,20,.28);
  --container:1280px;
  --gutter:40px;
  --sec-y:120px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  font-weight:400;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:900;letter-spacing:-.02em;line-height:1.24}
p{margin:0}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px}
::selection{background:var(--lime);color:var(--ink)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}
.section{padding:var(--sec-y) 0}
.section--tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px}
.section-head h2{font-size:clamp(1.6rem,3vw,2.6rem);max-width:760px}
.section-head .head-note{max-width:420px;color:var(--gray);font-size:15px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--gray);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--ink);display:block}

/* 通知条 */
.notice-bar{background:var(--ink);color:rgba(246,244,239,.86)}
.notice-inner{display:flex;align-items:center;gap:14px;min-height:44px;font-size:14px}
.notice-inner p{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.notice-dot{width:8px;height:8px;border-radius:50%;background:var(--lime);flex:none;box-shadow:0 0 0 4px rgba(201,242,76,.16)}
.notice-inner a{color:var(--lime);font-weight:700;white-space:nowrap;border-bottom:1px solid transparent;transition:border-color .2s var(--ease)}
.notice-inner a:hover{border-color:var(--lime)}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{background:rgba(246,244,239,.97);border-bottom-color:var(--line);box-shadow:var(--sh-1)}
.header-inner{display:flex;align-items:center;gap:22px;height:88px;transition:height .25s var(--ease)}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand-mark{
  width:40px;height:40px;border-radius:14px;background:var(--ink);color:var(--lime);
  display:grid;place-items:center;font-size:16px;flex:none;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17px;font-weight:900;letter-spacing:-.01em}
.brand-text em{font-style:normal;font-size:11px;color:var(--gray);letter-spacing:.06em}

.nav-tiles{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;flex:1;margin:0 6px}
.nav-tile{
  display:flex;align-items:center;gap:10px;
  padding:9px 12px;border-radius:14px;
  background:var(--card);border:1px solid var(--line);
  transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.nav-tile-ic{width:30px;height:30px;border-radius:9px;background:var(--muted);display:grid;place-items:center;font-size:13px;color:var(--ink);flex:none}
.nav-tile-tx{display:flex;flex-direction:column;min-width:0}
.nav-tile-tx strong{font-size:13.5px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav-tile-tx em{font-style:normal;font-size:11px;color:var(--gray);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav-tile:hover{background:var(--muted);border-color:rgba(201,242,76,.9);transform:translateY(-2px)}
.nav-tile.is-active{background:var(--ink);border-color:var(--ink)}
.nav-tile.is-active .nav-tile-tx strong{color:var(--paper)}
.nav-tile.is-active .nav-tile-tx em{color:rgba(246,244,239,.62)}
.nav-tile.is-active .nav-tile-ic{background:rgba(201,242,76,.18);color:var(--lime)}
.header-actions{display:flex;align-items:center;gap:10px;flex:none}
.menu-btn{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--card);
  place-items:center;font-size:16px;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.menu-btn:hover{background:var(--muted);border-color:rgba(201,242,76,.9)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:46px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn i{font-size:13px;transition:transform .22s var(--ease)}
.btn-primary{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn-primary:hover{background:var(--lime);color:var(--ink);border-color:var(--lime);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:hover i{transform:translateX(3px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-2px)}
.btn-light{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.btn-light:hover{background:var(--lime);border-color:var(--lime);transform:translateY(-2px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.link-more{
  display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:700;
  background-image:linear-gradient(var(--lime),var(--lime));
  background-size:0% 2px;background-repeat:no-repeat;background-position:0 100%;
  padding-bottom:3px;transition:background-size .28s var(--ease);
}
.link-more:hover{background-size:100% 2px}
.link-more i{font-size:12px}

/* 徽章与标签 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:700;letter-spacing:.04em;
  background:var(--paper);border:1px solid var(--line);color:var(--gray);
}
.badge-accent{background:var(--lime);border-color:var(--lime);color:var(--ink)}
.badge-ink{background:var(--ink);border-color:var(--ink);color:var(--paper)}

/* 页面标题带 */
.page-band{padding:56px 0 0}
.page-crumb{margin-bottom:22px}
.page-crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--gray)}
.page-crumb li{display:flex;align-items:center;gap:10px}
.page-crumb li+li::before{content:"/";color:var(--line)}
.page-crumb a{transition:color .2s var(--ease)}
.page-crumb a:hover{color:var(--ink)}
.page-crumb .current{color:var(--ink);font-weight:700}

.band-card{
  background:var(--card);border:1px solid var(--line);border-radius:28px;
  padding:48px;display:grid;grid-template-columns:1.35fr .9fr;gap:48px;align-items:center;
  box-shadow:var(--sh-1);
}
.band-copy h1{font-size:clamp(2.1rem,4.4vw,3.4rem);margin-bottom:20px}
.band-copy h1 span{display:block;color:var(--gray);font-size:clamp(1rem,1.6vw,1.18rem);font-weight:500;letter-spacing:0;margin-top:16px;line-height:1.85}
.band-lead{color:var(--gray);font-size:16.5px;max-width:640px}
.band-lead strong{color:var(--ink)}
.band-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.band-figure{border-radius:var(--r-card);overflow:hidden;background:var(--muted);aspect-ratio:4/3}
.band-figure img{width:100%;height:100%;object-fit:cover}
.band-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}

/* 指标卡 */
.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.metric{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.metric:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(201,242,76,.9)}
.metric-num{display:flex;align-items:baseline;gap:6px;font-family:"Space Grotesk","Noto Sans SC",sans-serif;font-weight:700;letter-spacing:-.03em;font-size:clamp(2.2rem,3.6vw,3rem);line-height:1}
.metric-num em{font-style:normal;font-size:15px;font-weight:700;color:var(--gray);letter-spacing:0}
.metric h3{font-size:15px;margin:16px 0 8px}
.metric p{font-size:14px;color:var(--gray);line-height:1.75}

/* 双栏图文 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.split-figure{border-radius:var(--r-card);overflow:hidden;background:var(--muted);aspect-ratio:16/11;border:1px solid var(--line)}
.split-figure img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.split-figure:hover img{transform:scale(1.04)}
.split-copy h2{font-size:clamp(1.6rem,3vw,2.4rem);margin-bottom:20px}
.split-copy p{color:var(--gray);margin-bottom:18px}
.split-list{margin-top:28px;border-top:1px solid var(--line)}
.split-list li{
  display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line);
  transition:padding-left .25s var(--ease);
}
.split-list li:hover{padding-left:12px}
.split-list .idx{font-family:"Space Grotesk",sans-serif;font-size:13px;font-weight:700;color:var(--gray);padding-top:4px;flex:none}
.split-list strong{display:block;font-size:15.5px;margin-bottom:4px}
.split-list span{display:block;color:var(--gray);font-size:14px;line-height:1.75}

/* 数据表格 */
.table-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:12px;box-shadow:var(--sh-1)}
.table-scroll{overflow-x:auto;border-radius:14px}
table.data{min-width:760px;font-size:14.5px}
table.data thead th{
  background:var(--ink);color:var(--paper);text-align:left;font-weight:700;font-size:13px;
  letter-spacing:.06em;padding:16px 20px;white-space:nowrap;
}
table.data thead th:first-child{border-radius:12px 0 0 12px}
table.data thead th:last-child{border-radius:0 12px 12px 0}
table.data tbody td{padding:18px 20px;border-bottom:1px solid var(--line);color:var(--gray);vertical-align:top}
table.data tbody tr:nth-child(even){background:var(--muted)}
table.data tbody tr:hover{background:#E9F5C9}
table.data tbody td:first-child{color:var(--ink);font-weight:700;white-space:nowrap}
table.data tbody td b{color:var(--ink);font-family:"Space Grotesk","Noto Sans SC",sans-serif;letter-spacing:-.01em}
.table-note{margin-top:16px;font-size:13px;color:var(--gray)}

/* 场景卡（错落） */
.case-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:24px}
.case-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;display:flex;flex-direction:column;gap:12px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(201,242,76,.9)}
.case-card.feature{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.case-card.feature p{color:rgba(246,244,239,.7)}
.case-card h3{font-size:19px}
.case-card p{font-size:14.5px;color:var(--gray);line-height:1.8;flex:1}
.case-card .case-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--gray)}
.case-card.feature .case-foot{color:rgba(246,244,239,.62)}

/* 流程 */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--line)}
.flow-item{padding:32px 28px 0;border-right:1px solid var(--line);transition:background .25s var(--ease)}
.flow-item:last-child{border-right:0}
.flow-item:hover{background:var(--muted)}
.flow-num{font-family:"Space Grotesk",sans-serif;font-size:clamp(2.4rem,4vw,3.4rem);font-weight:700;color:var(--line);line-height:1;letter-spacing:-.04em;transition:color .25s var(--ease)}
.flow-item:hover .flow-num{color:var(--lime)}
.flow-item h3{font-size:16.5px;margin:18px 0 10px}
.flow-item p{font-size:14px;color:var(--gray);line-height:1.8}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:1.5fr 1fr;gap:48px;align-items:start}
.faq-list{border-top:1px solid var(--line)}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;font-weight:700;font-size:16.5px;cursor:pointer;list-style:none;
  transition:padding-left .25s var(--ease),color .2s var(--ease);
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:hover{padding-left:12px}
.faq-list summary .chev{flex:none;width:28px;height:28px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;font-size:11px;color:var(--gray);transition:transform .25s var(--ease),background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease)}
.faq-list details[open] summary .chev{transform:rotate(180deg);background:var(--lime);border-color:var(--lime);color:var(--ink)}
.faq-body{padding:0 4px 24px;color:var(--gray);font-size:15px;line-height:1.9;max-width:760px}
.faq-side{background:var(--ink);color:var(--paper);border-radius:var(--r-card);padding:32px}
.faq-side h3{font-size:19px;margin-bottom:14px}
.faq-side p{color:rgba(246,244,239,.7);font-size:14.5px;margin-bottom:22px}
.faq-side ul li{display:flex;gap:10px;font-size:14px;color:rgba(246,244,239,.82);padding:10px 0;border-top:1px solid rgba(246,244,239,.12)}
.faq-side ul li i{color:var(--lime);font-size:12px;padding-top:6px}
.faq-side .btn{margin-top:24px}

/* CTA */
.cta-band{background:var(--ink);color:var(--paper);border-radius:32px;padding:64px;position:relative;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,242,76,.22),transparent 68%);
}
.cta-band h2{font-size:clamp(1.7rem,3.2vw,2.6rem);max-width:720px;position:relative}
.cta-band p{color:rgba(246,244,239,.72);max-width:620px;margin-top:18px;position:relative}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;position:relative}
.cta-strip{width:64px;height:3px;background:var(--lime);border-radius:2px;margin-bottom:26px}

/* 页脚 */
.site-footer{background:var(--ink);color:rgba(246,244,239,.8);margin-top:var(--sec-y);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand strong{display:block;color:var(--paper);font-size:22px;font-weight:900;letter-spacing:-.02em;margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(246,244,239,.66)}
.footer-col h4{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:rgba(246,244,239,.5);margin-bottom:18px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--lime)}
.footer-col p{font-size:14px;line-height:2;color:rgba(246,244,239,.68)}
.footer-col p b{color:var(--paper);font-weight:700}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(246,244,239,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(246,244,239,.5);
}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,17,20,.5);opacity:0;visibility:hidden;
  transition:opacity .25s var(--ease),visibility .25s var(--ease);z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(360px,86vw);z-index:80;
  background:var(--paper);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .3s var(--ease);
  padding:24px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-head strong{font-size:17px;font-weight:900}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);display:grid;place-items:center;background:var(--card)}
.drawer-nav{display:grid;gap:10px;margin-bottom:24px}
.drawer-nav .nav-tile{align-items:center}

/* 入场动画 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* 响应式 */
@media (max-width:1439px){
  :root{--container:1180px}
}
@media (max-width:1199px){
  :root{--gutter:28px;--sec-y:88px}
  .nav-tiles{grid-template-columns:repeat(3,minmax(0,1fr))}
  .band-card{grid-template-columns:1fr;gap:32px;padding:36px}
  .band-figure{aspect-ratio:16/9}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
  .case-grid{grid-template-columns:1fr 1fr}
  .case-card.feature{grid-column:span 2}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-col:last-child{grid-column:span 3}
}
@media (max-width:1023px){
  .nav-tiles{display:none}
  .menu-btn{display:grid}
  .header-actions .btn-sm{display:none}
  .split{grid-template-columns:1fr;gap:32px}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow-item{border-right:0;border-bottom:1px solid var(--line);padding:24px 20px}
  .flow-item:nth-child(odd){border-right:1px solid var(--line)}
  .cta-band{padding:44px 28px}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
}
@media (max-width:768px){
  :root{--gutter:20px;--sec-y:64px}
  body{font-size:16px}
  .notice-inner{min-height:40px;font-size:13px}
  .notice-inner p{white-space:normal;overflow:visible;text-overflow:clip;line-height:1.6}
  .brand-text em{display:none}
  .band-card{padding:24px;border-radius:22px}
  .band-copy h1{font-size:1.9rem}
  .band-actions .btn{width:100%}
  .metrics{grid-template-columns:1fr;gap:16px}
  .metric{padding:22px}
  .case-grid{grid-template-columns:1fr}
  .case-card.feature{grid-column:span 1}
  .flow{grid-template-columns:1fr}
  .flow-item{border-right:0!important}
  .split-list li:hover{padding-left:0}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-col:last-child{grid-column:span 1}
  .footer-bottom{flex-direction:column;gap:8px}
  .faq-side{padding:24px}
}
@media (max-width:480px){
  .band-copy h1{font-size:1.7rem}
  .btn{font-size:14px;padding:0 18px}
  .case-card,.metric{padding:20px}
  .table-card{padding:8px}
}

/* roulang page: article */
:root{
  --ink:#101114;
  --paper:#F6F4EF;
  --white:#FFFFFF;
  --surface:#EFECE4;
  --lime:#C9F24C;
  --graphite:#6E6F6A;
  --line:#E3DFD6;
  --ok:#3F9E6A;
  --warn:#D98A2B;
  --err:#C4553F;
  --r-card:20px;
  --r-tile:14px;
  --r-btn:999px;
  --r-input:12px;
  --sh-1:0 1px 2px rgba(16,17,20,.04);
  --sh-2:0 18px 40px -20px rgba(16,17,20,.28);
  --pad-x:40px;
  --gap-y:120px;
  --max:1280px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{letter-spacing:-.02em;line-height:1.25;margin:0}
p{margin:0}
ul,ol{margin:0;padding:0}
[hidden]{display:none!important}
::selection{background:var(--lime);color:var(--ink)}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--pad-x)}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 18px;border-radius:0 0 12px 0;z-index:200}
.skip:focus{left:0}

/* ---------- 顶部通知条 ---------- */
.topbar{background:var(--ink);color:rgba(246,244,239,.86)}
.topbar-inner{display:flex;align-items:center;gap:12px;height:42px;font-size:13px}
.topbar-dot{width:8px;height:8px;border-radius:50%;background:var(--lime);flex:0 0 auto;box-shadow:0 0 0 4px rgba(201,242,76,.16)}
.topbar-inner p{flex:1;min-width:0;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.topbar-inner a{color:var(--lime);font-weight:700;text-decoration:none;display:inline-flex;align-items:center;gap:6px;flex:0 0 auto}
.topbar-inner a:hover{text-decoration:underline}

/* ---------- 头部 与 卡片化导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.9);
  backdrop-filter:saturate(150%) blur(8px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(246,244,239,.96);
  border-bottom-color:var(--line);
  box-shadow:0 14px 30px -26px rgba(16,17,20,.55);
}
.header-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-top:16px;padding-bottom:14px;transition:padding .25s ease}
.site-header.is-scrolled .header-bar{padding-top:10px;padding-bottom:8px}
.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink)}
.brand-mark{width:40px;height:40px;border-radius:12px;background:var(--ink);color:var(--lime);display:grid;place-items:center;font-weight:900;font-size:17px;letter-spacing:-.04em}
.brand-tx{display:flex;flex-direction:column;line-height:1.2}
.brand-tx strong{font-size:19px;font-weight:900;letter-spacing:-.02em}
.brand-tx em{font-style:normal;font-size:11px;color:var(--graphite);letter-spacing:.08em;font-weight:500}
.header-actions{display:flex;align-items:center;gap:12px}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:12px;background:var(--white);
  border:1px solid var(--line);cursor:pointer;align-items:center;justify-content:center;font-size:16px;
  transition:background .2s ease,border-color .2s ease;
}
.menu-toggle:hover{background:var(--surface);border-color:rgba(201,242,76,.9)}
.nav-tiles{
  display:grid;grid-template-columns:repeat(5,1fr);gap:12px;
  padding-bottom:16px;
}
.nav-tile{
  display:flex;align-items:center;gap:12px;min-height:64px;
  padding:12px 14px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-tile);
  text-decoration:none;color:var(--ink);transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.nav-tile-ic{
  width:34px;height:34px;flex:0 0 auto;border-radius:10px;background:var(--surface);
  display:grid;place-items:center;font-size:14px;color:var(--ink);transition:background .2s ease,color .2s ease;
}
.nav-tile-tx{display:flex;flex-direction:column;min-width:0}
.nav-tile-tx strong{font-size:14px;font-weight:700}
.nav-tile-tx em{font-style:normal;font-size:12px;color:var(--graphite);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav-tile:hover{background:var(--surface);border-color:rgba(201,242,76,.9);transform:translateY(-2px)}
.nav-tile:hover .nav-tile-ic{background:var(--lime);color:var(--ink)}
.nav-tile.is-active{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.nav-tile.is-active em{color:rgba(246,244,239,.7)}
.nav-tile.is-active .nav-tile-ic{background:rgba(246,244,239,.12);color:var(--lime)}
.site-header.is-scrolled .nav-tile{min-height:52px;padding:8px 14px}
.site-header.is-scrolled .nav-tile em{display:none}

/* ---------- 抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(16,17,20,.52);opacity:0;pointer-events:none;transition:opacity .28s ease;z-index:70}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(360px,88vw);background:var(--paper);
  transform:translateX(102%);transition:transform .3s cubic-bezier(.4,0,.2,1);z-index:80;
  padding:22px;overflow-y:auto;box-shadow:-24px 0 60px -34px rgba(0,0,0,.6);
}
body.drawer-open .drawer{transform:none}
body.drawer-open .drawer-mask{opacity:1;pointer-events:auto}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-close{width:44px;height:44px;border-radius:12px;background:var(--white);border:1px solid var(--line);cursor:pointer}
.drawer-list{list-style:none;display:grid;gap:10px}
.drawer-list a{
  display:flex;align-items:center;gap:12px;min-height:52px;padding:10px 14px;text-decoration:none;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-tile);font-weight:700;font-size:15px;
}
.drawer-list a:hover{background:var(--surface);border-color:rgba(201,242,76,.9)}
.drawer-list i{color:var(--graphite)}
.drawer-cta{margin-top:22px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:700;text-decoration:none;cursor:pointer;white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn i{font-size:13px}
.btn-primary{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-primary:hover{background:var(--lime);color:var(--ink);border-color:var(--lime);transform:translateY(-2px);box-shadow:0 12px 26px -16px rgba(16,17,20,.6)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-2px)}
.btn-lime{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.btn-lime:hover{background:var(--paper);color:var(--ink);border-color:var(--paper);transform:translateY(-2px)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn-link{
  display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:15px;color:var(--ink);
  text-decoration:none;position:relative;padding-bottom:3px;
}
.btn-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--lime);transition:width .25s ease}
.btn-link:hover::after{width:100%}
.btn-link i{transition:transform .25s ease}
.btn-link:hover i{transform:translateX(4px)}

/* ---------- 通用标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  background:var(--paper);border:1px solid var(--line);font-size:12px;color:var(--graphite);font-weight:500;
}
.badge-lime{background:var(--lime);border-color:var(--lime);color:var(--ink);font-weight:700}
.badge-dark{background:var(--ink);border-color:var(--ink);color:var(--paper)}

/* ---------- 面包屑 ---------- */
.crumb-band{padding:28px 0 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:0;list-style:none;font-size:14px;color:var(--graphite)}
.breadcrumb li{display:flex;align-items:center}
.breadcrumb li+li::before{content:"/";margin:0 10px;color:var(--line)}
.breadcrumb a{text-decoration:none;color:var(--graphite)}
.breadcrumb a:hover{color:var(--ink);text-decoration:underline}
.breadcrumb li[aria-current] span{color:var(--ink);font-weight:500}

/* ---------- 文章头部 ---------- */
.article-hero{padding:32px 0 36px}
.article-hero .kicker{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:18px}
.article-title{
  font-size:clamp(2rem,4.4vw,3.4rem);font-weight:900;letter-spacing:-.02em;line-height:1.2;
  max-width:930px;
}
.article-lead{
  margin-top:18px;max-width:760px;font-size:17px;color:#2c2d30;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:22px;font-size:14px;color:var(--graphite)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line)}
.article-meta .sep{width:1px;height:14px;background:var(--line)}

/* ---------- 封面 ---------- */
.article-cover{margin:0 0 56px}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-card);background:var(--surface)}
.article-cover figcaption{margin-top:10px;font-size:12px;color:var(--graphite)}

/* ---------- 阅读区布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 236px;gap:56px;justify-content:center;padding-bottom:var(--gap-y)}
.article-layout.no-toc{grid-template-columns:minmax(0,760px)}
.article-side{display:grid;gap:20px;align-self:start;position:sticky;top:112px}
.article-toc .toc-title{font-size:12px;letter-spacing:.08em;color:var(--graphite);font-weight:700;margin-bottom:12px}
.toc-list{list-style:none;display:grid;gap:8px;border-left:1px solid var(--line);padding-left:16px}
.toc-list a{display:block;font-size:14px;color:var(--graphite);text-decoration:none;line-height:1.5;padding:3px 0}
.toc-list a:hover{color:var(--ink)}
.toc-list a.is-current{color:var(--ink);font-weight:700}
.side-card{background:var(--ink);color:var(--paper);border-radius:var(--r-card);padding:24px}
.side-card strong{display:block;font-size:16px;font-weight:700}
.side-card p{font-size:13.5px;color:rgba(246,244,239,.72);margin:10px 0 18px;line-height:1.75}
.side-card .btn{width:100%}

/* ---------- 正文排版 ---------- */
.article-body{font-size:17px;line-height:1.9;color:#232427}
.article-body>*+*{margin-top:20px}
.article-body p{margin:0 0 20px}
.article-body h2{
  font-size:clamp(1.4rem,2.6vw,1.9rem);font-weight:900;letter-spacing:-.02em;
  margin:52px 0 18px;padding-left:16px;border-left:3px solid var(--lime);line-height:1.35;scroll-margin-top:120px;
}
.article-body h3{font-size:1.22rem;font-weight:700;margin:34px 0 12px;scroll-margin-top:120px}
.article-body h4{font-size:1.02rem;font-weight:700;margin:26px 0 10px}
.article-body a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--lime);text-underline-offset:4px;text-decoration-thickness:2px}
.article-body a:hover{background:rgba(201,242,76,.35)}
.article-body ul,.article-body ol{list-style:none;display:grid;gap:10px;margin:0 0 22px}
.article-body ul>li,.article-body ol>li{position:relative;padding-left:24px}
.article-body ul>li::before{
  content:"";position:absolute;left:1px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--lime);
}
.article-body ol{counter-reset:li}
.article-body ol>li{counter-increment:li}
.article-body ol>li::before{
  content:counter(li,decimal-leading-zero);position:absolute;left:0;top:0;
  font-size:12px;font-weight:700;color:var(--graphite);line-height:2.3;letter-spacing:.04em;
}
.article-body blockquote{
  margin:28px 0;background:var(--white);border-left:3px solid var(--ink);
  border-radius:0 var(--r-card) var(--r-card) 0;padding:20px 26px;color:#2c2d30;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:16px;margin:26px auto;background:var(--surface)}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:12px;color:var(--graphite);text-align:center;margin-top:10px}
.article-body .table-scroll{overflow-x:auto;margin:26px 0;border:1px solid var(--line);border-radius:14px}
.article-body table{width:100%;border-collapse:collapse;font-size:14.5px;background:var(--white);min-width:520px}
.article-body th{background:var(--ink);color:var(--paper);font-weight:700;text-align:left}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line)}
.article-body tbody tr:nth-child(even){background:var(--surface)}
.article-body code{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:2px 6px;font-size:14px}
.article-body hr{border:none;border-top:1px solid var(--line);margin:36px 0}

/* ---------- 空态 ---------- */
.empty-state{
  background:var(--white);border:1px dashed var(--line);border-radius:var(--r-card);
  padding:56px 32px;text-align:center;display:grid;gap:14px;justify-items:center;
}
.empty-state i{font-size:30px;color:var(--graphite)}
.empty-state h2{font-size:1.4rem;font-weight:900;border:none;padding:0;margin:0}
.empty-state p{font-size:15px;color:var(--graphite);max-width:520px}

/* ---------- 文末 ---------- */
.article-foot{border-top:1px solid var(--line);margin-top:56px;padding-top:28px;display:grid;gap:22px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.tag-row .label{font-size:12px;letter-spacing:.08em;color:var(--graphite);font-weight:700}
.share-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.share-btn{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:var(--white);
  display:grid;place-items:center;color:var(--graphite);cursor:pointer;transition:.2s ease;
}
.share-btn:hover{color:var(--ink);border-color:rgba(201,242,76,.9);background:var(--surface)}

.pager{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin:44px 0 0}
.pager-card{
  display:block;text-decoration:none;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);transition:.25s ease;
}
.pager-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(201,242,76,.9)}
.pager-card .dir{font-size:12px;letter-spacing:.08em;color:var(--graphite);font-weight:700}
.pager-card strong{display:block;font-size:16px;font-weight:700;margin:10px 0 6px}
.pager-card span{font-size:13.5px;color:var(--graphite)}

/* ---------- 推荐 ---------- */
.rec-section{padding:0 0 var(--gap-y)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:32px}
.section-head h2{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:900}
.section-head p{font-size:15px;color:var(--graphite);margin-top:10px;max-width:640px}
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rec-card{
  display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);text-decoration:none;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.rec-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(201,242,76,.9)}
.rec-thumb{overflow:hidden;background:var(--surface)}
.rec-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s ease}
.rec-card:hover .rec-thumb img{transform:scale(1.04)}
.rec-body{padding:22px 22px 24px;display:grid;gap:12px}
.rec-body h3{font-size:1.05rem;font-weight:700;line-height:1.5}
.rec-body p{font-size:14px;color:var(--graphite)}
.rec-foot{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--graphite);padding-top:4px}
.rec-foot i{transition:transform .25s ease}
.rec-card:hover .rec-foot i{transform:translateX(4px)}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);color:var(--paper);border-radius:28px;padding:clamp(34px,5vw,64px);
  display:grid;gap:20px;justify-items:center;text-align:center;
}
.cta-band h2{font-size:clamp(1.7rem,3.4vw,2.6rem);font-weight:900;color:#fff;max-width:760px}
.cta-band p{font-size:16px;color:rgba(246,244,239,.72);max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.back-row{display:flex;justify-content:center;margin-top:34px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(246,244,239,.8);padding:80px 0 32px;margin-top:var(--gap-y)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand strong{display:block;font-size:20px;font-weight:900;color:#fff;margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(246,244,239,.7);max-width:380px}
.footer-col h4{font-size:12px;letter-spacing:.08em;color:rgba(246,244,239,.5);text-transform:uppercase;margin-bottom:16px;font-weight:700}
.footer-col ul{list-style:none;display:grid;gap:10px}
.footer-col a{color:rgba(246,244,239,.82);text-decoration:none;font-size:14px}
.footer-col a:hover{color:var(--lime)}
.footer-col p{font-size:14px;color:rgba(246,244,239,.7);line-height:1.9}
.footer-col b{color:#fff;font-weight:700}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  border-top:1px solid rgba(246,244,239,.14);margin-top:48px;padding-top:24px;
  font-size:13px;color:rgba(246,244,239,.55);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .2s ease,transform .2s ease}
.reveal.in{opacity:1;transform:none}
.reveal-stagger>*{opacity:0;transform:translateY(16px);transition:opacity .2s ease,transform .2s ease}
.reveal-stagger.in>*{opacity:1;transform:none}
.reveal-stagger.in>*:nth-child(1){transition-delay:0ms}
.reveal-stagger.in>*:nth-child(2){transition-delay:60ms}
.reveal-stagger.in>*:nth-child(3){transition-delay:120ms}
.reveal-stagger.in>*:nth-child(4){transition-delay:180ms}
.reveal-stagger.in>*:nth-child(5){transition-delay:240ms}
.skeleton{background:var(--surface);border-radius:12px;position:relative;overflow:hidden}
.skeleton::after{
  content:"";position:absolute;inset:0;transform:translateX(-100%);
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.55),transparent);
  animation:shimmer 1.4s infinite;
}
@keyframes shimmer{to{transform:translateX(100%)}}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal,.reveal-stagger>*{opacity:1;transform:none}
}

/* ---------- 断点 ---------- */
@media (max-width:1439px){
  :root{--max:1180px}
}
@media (max-width:1199px){
  :root{--pad-x:28px;--gap-y:88px}
  .nav-tiles{grid-template-columns:repeat(3,minmax(0,1fr))}
  .nav-tile:nth-child(4),.nav-tile:nth-child(5){display:none}
}
@media (max-width:1023px){
  :root{--pad-x:28px;--gap-y:88px}
  .nav-tiles{display:none}
  .menu-toggle{display:inline-flex}
  .article-layout{grid-template-columns:minmax(0,760px)}
  .article-side{position:static;grid-template-columns:minmax(0,1fr);}
  .article-toc{display:none}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-col:last-child{grid-column:1/-1}
}
@media (max-width:767px){
  :root{--pad-x:20px;--gap-y:64px}
  .topbar-inner{font-size:12px}
  .topbar-inner p{white-space:normal;line-height:1.4;padding:8px 0}
  .topbar-inner{height:auto;min-height:42px;align-items:flex-start;padding:6px 0}
  .topbar-dot{margin-top:10px}
  .topbar-inner a{display:none}
  .brand-tx em{display:none}
  .article-hero{padding:24px 0 28px}
  .article-title{font-size:clamp(1.7rem,7vw,2.2rem)}
  .article-lead{font-size:16px}
  .article-cover{margin-bottom:36px}
  .rec-grid{grid-template-columns:minmax(0,1fr)}
  .pager{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:30px}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
}
@media (max-width:520px){
  .article-title{font-size:2rem}
  .btn{height:46px;padding:0 20px}
  .btn-sm{height:44px}
  .rec-body{padding:20px}
  .pager-card{padding:20px}
}

/* roulang page: category3 */
:root{
  --ink:#101114;
  --paper:#F6F4EF;
  --card:#FFFFFF;
  --sub:#EFECE4;
  --lime:#C9F24C;
  --graphite:#6E6F6A;
  --line:#E3DFD6;
  --ok:#3F9E6A;
  --warn:#D98A2B;
  --err:#C4553F;
  --r-card:20px;
  --r-btn:999px;
  --r-input:12px;
  --sh-1:0 1px 2px rgba(16,17,20,.04);
  --sh-2:0 18px 40px -20px rgba(16,17,20,.28);
  --gap:24px;
  --band:120px;
  --font-cn:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,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(--ink);
  font-family:var(--font-cn);font-size:16.5px;line-height:1.85;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-radius:var(--r-card)}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:900;letter-spacing:-0.02em;line-height:1.22}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px}

/* container */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px}
@media(max-width:1199px){.container{max-width:1180px;padding:0 28px}}
@media(max-width:767px){.container{padding:0 20px}}

/* ============ topbar ============ */
.topbar{background:var(--ink);color:rgba(246,244,239,.86);font-size:13px}
.topbar-inner{display:flex;align-items:center;gap:12px;min-height:40px;padding-top:8px;padding-bottom:8px}
.topbar-dot{width:8px;height:8px;border-radius:50%;background:var(--lime);flex:none;box-shadow:0 0 0 3px rgba(201,242,76,.18)}
.topbar p{font-size:13px;line-height:1.5;color:rgba(246,244,239,.82)}
.topbar-link{margin-left:auto;font-size:13px;color:var(--lime);border-bottom:1px solid rgba(201,242,76,.45);padding-bottom:2px;white-space:nowrap}
.topbar-link:hover{border-bottom-color:var(--lime)}

/* ============ header ============ */
.site-header{position:sticky;top:0;z-index:80;background:var(--paper);transition:box-shadow .2s ease}
.header-bar{background:rgba(246,244,239,.96);border-bottom:1px solid transparent;transition:border-color .2s ease,background .2s ease}
.site-header.is-shrink .header-bar{border-bottom-color:var(--line);background:rgba(246,244,239,.97);box-shadow:var(--sh-1)}
.header-inner{display:flex;align-items:center;gap:20px;padding-top:18px;padding-bottom:18px;transition:padding .22s ease}
.site-header.is-shrink .header-inner{padding-top:10px;padding-bottom:10px}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand-mark{
  width:44px;height:44px;border-radius:14px;background:var(--ink);color:var(--lime);
  display:grid;place-items:center;font-weight:900;font-size:15px;letter-spacing:.04em
}
.brand-tx{display:flex;flex-direction:column;line-height:1.25}
.brand-tx strong{font-size:17px;font-weight:900;letter-spacing:-0.01em}
.brand-tx em{font-style:normal;font-size:11.5px;color:var(--graphite);letter-spacing:.08em}

/* nav tiles */
.nav-tiles{display:flex;align-items:stretch;gap:8px;margin-left:auto;padding:6px;background:var(--card);border:1px solid var(--line);border-radius:18px;box-shadow:var(--sh-1)}
.nav-tile{
  display:flex;align-items:center;gap:10px;padding:9px 14px;border-radius:14px;
  background:var(--paper);border:1px solid transparent;transition:background .18s ease,border-color .18s ease,transform .18s ease
}
.nav-tile-ic{
  width:34px;height:34px;flex:none;border-radius:10px;background:var(--sub);color:var(--ink);
  display:grid;place-items:center;font-size:14px;transition:background .18s ease,color .18s ease
}
.nav-tile-tx{display:flex;flex-direction:column;line-height:1.28}
.nav-tile-tx strong{font-size:14px;font-weight:700;white-space:nowrap}
.nav-tile-tx em{font-style:normal;font-size:11px;color:var(--graphite);white-space:nowrap}
.nav-tile:hover{background:var(--sub);border-color:rgba(201,242,76,.9);transform:translateY(-2px)}
.nav-tile:hover .nav-tile-ic{background:var(--lime);color:var(--ink)}
.nav-tile.is-active{background:var(--ink);border-color:var(--ink)}
.nav-tile.is-active .nav-tile-tx strong{color:var(--paper)}
.nav-tile.is-active .nav-tile-tx em{color:rgba(246,244,239,.62)}
.nav-tile.is-active .nav-tile-ic{background:rgba(201,242,76,.16);color:var(--lime)}
.header-act{display:flex;align-items:center;gap:12px;margin-left:16px;flex:none}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);font-size:14.5px;font-weight:700;
  border:1px solid transparent;transition:background .18s ease,color .18s ease,transform .18s ease,border-color .18s ease,box-shadow .18s ease
}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--lime);color:var(--ink);transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-2px)}
.btn-lime{background:var(--lime);color:var(--ink)}
.btn-lime:hover{background:var(--paper);color:var(--ink);transform:translateY(-2px)}
.btn-link{
  display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:700;
  padding:4px 0;border-bottom:1px solid var(--line);transition:border-color .18s ease,color .18s ease
}
.btn-link i{transition:transform .18s ease}
.btn-link:hover{border-bottom-color:var(--lime)}
.btn-link:hover i{transform:translateX(4px)}

.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--card);align-items:center;justify-content:center;font-size:16px}

/* ============ breadcrumb ============ */
.crumb{padding-top:26px}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--graphite)}
.crumb li{display:flex;align-items:center;gap:10px}
.crumb li::after{content:"/";color:var(--line)}
.crumb li:last-child::after{display:none}
.crumb a:hover{color:var(--ink)}
.crumb .current{color:var(--ink);font-weight:700}

/* ============ page head ============ */
.page-head{padding:34px 0 0}
.page-head-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.page-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--graphite);background:var(--card);border:1px solid var(--line);
  border-radius:999px;padding:6px 14px
}
.page-tag b{color:var(--ink)}
.page-head h1{font-size:clamp(2rem,4vw,3.1rem);margin:18px 0 16px}
.page-head h1 span{display:inline-block;border-bottom:6px solid var(--lime);padding-bottom:2px}
.lead{font-size:16.5px;color:var(--graphite);max-width:640px}
.lead p+p{margin-top:10px}
.page-head-acts{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.page-head-media{border-radius:var(--r-card);overflow:hidden;background:var(--sub);box-shadow:var(--sh-1);border:1px solid var(--line)}
.page-head-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0}
.page-media-cap{font-size:12px;color:var(--graphite);padding:10px 14px;background:var(--card);border-top:1px solid var(--line)}

/* ============ sections ============ */
.section{padding:var(--band) 0 0}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:clamp(1.6rem,3vw,2.4rem)}
.section-head p{margin-top:14px;color:var(--graphite)}
.eyebrow{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--graphite);display:block;margin-bottom:12px}

/* metric cards */
.metric-row{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.metric-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(201,242,76,.9)}
.metric-card strong{display:block;font-size:2.1rem;font-weight:900;letter-spacing:-0.02em;line-height:1.1}
.metric-card strong i{font-style:normal;font-size:.7em;color:var(--graphite);margin-left:4px}
.metric-card h3{font-size:1rem;font-weight:700;margin:12px 0 6px}
.metric-card p{font-size:14px;color:var(--graphite);line-height:1.7}

/* zigzag */
.zig{display:flex;flex-direction:column;gap:72px}
.zig-row{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.zig-media{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--sub)}
.zig-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform .35s ease}
.zig-media:hover img{transform:scale(1.04)}
.zig-index{
  position:absolute;top:16px;left:16px;background:var(--ink);color:var(--lime);
  font-size:12px;letter-spacing:.08em;padding:6px 12px;border-radius:999px
}
.zig-body h3{font-size:1.55rem;margin-bottom:14px}
.zig-body>p{color:var(--graphite);max-width:560px}
.tick-list{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.tick-list li{display:flex;gap:12px;font-size:15px;line-height:1.7;color:#2b2c30;padding-bottom:12px;border-bottom:1px dashed var(--line)}
.tick-list li:last-child{border-bottom:0;padding-bottom:0}
.tick-list i{color:var(--ink);background:var(--lime);width:20px;height:20px;border-radius:6px;display:grid;place-items:center;font-size:10px;flex:none;margin-top:5px}
.zig-row.reverse .zig-media{order:2}

/* compare */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap)}
.compare-col{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:30px 28px;box-shadow:var(--sh-1)}
.compare-col h3{font-size:1.15rem;display:flex;align-items:center;gap:10px}
.compare-col h3 span{
  width:26px;height:26px;border-radius:999px;display:grid;place-items:center;font-size:12px;
  background:var(--sub);color:var(--graphite)
}
.compare-col.is-key{border-color:var(--ink);background:var(--ink);color:var(--paper)}
.compare-col.is-key h3 span{background:var(--lime);color:var(--ink)}
.compare-col.is-key .cmp-item{border-top-color:rgba(246,244,239,.16)}
.compare-col.is-key .cmp-item p{color:rgba(246,244,239,.72)}
.cmp-item{border-top:1px solid var(--line);padding:18px 0 0;margin-top:18px}
.cmp-item:first-of-type{margin-top:24px}
.cmp-item b{display:block;font-size:14px;letter-spacing:.02em;margin-bottom:6px}
.cmp-item p{font-size:14px;color:var(--graphite);line-height:1.75}

/* dark band */
.band-dark{
  margin-top:var(--band);background:var(--ink);color:var(--paper);
  background-image:linear-gradient(rgba(16,17,20,.86),rgba(16,17,20,.92)),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center
}
.band-dark .container{padding-top:96px;padding-bottom:96px}
.band-dark h2{font-size:clamp(1.6rem,3vw,2.3rem);max-width:760px}
.band-dark .band-sub{color:rgba(246,244,239,.7);margin-top:14px;max-width:660px}
.band-line{width:88px;height:3px;background:var(--lime);margin-top:26px;border-radius:3px}
.pace{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);margin-top:52px}
.pace-item{border-top:1px solid rgba(246,244,239,.22);padding-top:20px}
.pace-item b{display:block;font-size:13px;letter-spacing:.08em;color:var(--lime);margin-bottom:10px}
.pace-item strong{display:block;font-size:1.05rem;font-weight:700;margin-bottom:8px}
.pace-item p{font-size:14px;color:rgba(246,244,239,.7);line-height:1.75}

/* faq */
.faq-wrap{max-width:880px}
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:18px;
  padding:22px 4px;font-weight:700;font-size:16.5px;transition:padding-left .18s ease,color .18s ease
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{padding-left:10px}
.faq-arrow{
  margin-left:auto;width:32px;height:32px;flex:none;border-radius:999px;background:var(--card);
  border:1px solid var(--line);display:grid;place-items:center;font-size:12px;transition:transform .22s ease,background .22s ease
}
.faq-item[open] .faq-arrow{transform:rotate(180deg);background:var(--lime);border-color:var(--lime)}
.faq-body{padding:0 4px 26px;max-width:720px;color:var(--graphite);font-size:15.5px;line-height:1.85}
.faq-body p+p{margin-top:10px}

/* cta */
.cta{margin-top:var(--band);background:var(--ink);color:var(--paper)}
.cta .container{padding-top:84px;padding-bottom:84px;text-align:center}
.cta h2{font-size:clamp(1.7rem,3.4vw,2.6rem);max-width:820px;margin:0 auto}
.cta p{color:rgba(246,244,239,.72);max-width:640px;margin:18px auto 0}
.cta-acts{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:34px}
.cta-note{margin-top:22px;font-size:13px;color:rgba(246,244,239,.55)}

/* ============ footer ============ */
.site-footer{margin-top:0;background:var(--ink);color:rgba(246,244,239,.8);padding:72px 0 30px;border-top:1px solid rgba(246,244,239,.12)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}
.footer-brand strong{color:var(--paper);font-size:19px;font-weight:900;display:block;margin-bottom:14px;letter-spacing:-0.01em}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(246,244,239,.68);max-width:360px}
.footer-col h4{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:rgba(246,244,239,.5);margin-bottom:16px;font-weight:700}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14.5px;color:rgba(246,244,239,.82);transition:color .18s ease}
.footer-col a:hover{color:var(--lime)}
.footer-col p{font-size:14px;line-height:1.9;color:rgba(246,244,239,.68)}
.footer-col p b{color:var(--paper);font-weight:700}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(246,244,239,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(246,244,239,.52)
}

/* ============ responsive ============ */
@media(max-width:1199px){
  .nav-tile-tx em{display:none}
  .metric-row{grid-template-columns:repeat(2,1fr)}
  .pace{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:1023px){
  .nav-toggle{display:flex}
  .nav-tiles{
    position:fixed;top:0;right:0;height:100vh;width:min(88vw,380px);
    flex-direction:column;align-items:stretch;gap:10px;margin:0;padding:92px 22px 34px;
    background:var(--card);border:0;border-left:1px solid var(--line);border-radius:0;
    transform:translateX(104%);transition:transform .32s ease;overflow:auto;z-index:90;box-shadow:-20px 0 50px -30px rgba(16,17,20,.5)
  }
  body.nav-open .nav-tiles{transform:translateX(0)}
  body.nav-open::after{content:"";position:fixed;inset:0;background:rgba(16,17,20,.45);z-index:85}
  .nav-tile{background:var(--paper);padding:14px 16px}
  .nav-tile-tx em{display:block}
  .header-act{margin-left:auto}
  .page-head-grid{grid-template-columns:1fr;gap:32px}
  .zig-row{grid-template-columns:1fr;gap:28px}
  .zig-row.reverse .zig-media{order:0}
  .compare-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .section{padding-top:88px}
  .band-dark .container{padding-top:72px;padding-bottom:72px}
}
@media(max-width:767px){
  body{font-size:16px}
  .topbar-link{display:none}
  .brand-tx em{display:none}
  .header-act .btn-primary{display:none}
  .section{padding-top:64px}
  .metric-row{grid-template-columns:1fr;gap:16px}
  .pace{grid-template-columns:1fr;gap:18px}
  .zig{gap:52px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .cta .container{padding-top:64px;padding-bottom:64px}
  .cta-acts{flex-direction:column;align-items:stretch}
  .cta-acts .btn{width:100%}
  .page-head-acts{flex-direction:column;align-items:stretch}
  .page-head-acts .btn{width:100%}
  .band-dark .container{padding-top:56px;padding-bottom:56px}
  .footer-bottom{flex-direction:column}
}
@media(max-width:480px){
  .page-head h1{font-size:2rem}
  .metric-card{padding:20px}
  .compare-col{padding:22px 20px}
  .faq-item summary{font-size:15.5px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --ink:#101114;
  --paper:#F6F4EF;
  --card:#FFFFFF;
  --sub:#EFECE4;
  --lime:#C9F24C;
  --gray:#6E6F6A;
  --line:#E3DFD6;
  --ok:#3F9E6A;
  --warn:#D98A2B;
  --err:#C4553F;
  --r-card:20px;
  --r-btn:999px;
  --r-sm:12px;
  --sh-1:0 1px 2px rgba(16,17,20,.04);
  --sh-2:0 18px 40px -20px rgba(16,17,20,.28);
  --cw:1280px;
  --pad:40px;
  --sec:120px;
  --font:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,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(--ink);
  font-family:var(--font);font-size:16.5px;line-height:1.85;font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:900;letter-spacing:-.02em;line-height:1.2}
p{margin:0}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px}
::selection{background:var(--lime);color:var(--ink)}

.container{width:100%;max-width:var(--cw);margin:0 auto;padding:0 var(--pad)}
.section{padding:var(--sec) 0}
.section-tight{padding:calc(var(--sec) * .62) 0}
.sec-head{max-width:760px}
.sec-head h2{font-size:clamp(1.6rem,3vw,2.6rem);margin-bottom:16px}
.sec-head p{color:var(--gray)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;
  letter-spacing:.08em;text-transform:uppercase;color:var(--gray);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--ink)}
.eyebrow.on-dark{color:rgba(246,244,239,.7)}
.eyebrow.on-dark::before{background:var(--lime)}
.lead{font-size:17px;color:var(--gray);max-width:640px}

/* ---------- 顶部通知条 ---------- */
.topbar{background:var(--ink);color:rgba(246,244,239,.86);font-size:13.5px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px}
.topbar-msg{display:flex;align-items:center;gap:10px;min-width:0}
.topbar-msg span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.dot{width:8px;height:8px;border-radius:50%;background:var(--lime);flex:none;box-shadow:0 0 0 4px rgba(201,242,76,.18)}
.topbar a{color:var(--lime);border-bottom:1px solid transparent;transition:border-color .2s ease;flex:none}
.topbar a:hover{border-color:var(--lime)}

/* ---------- 头部与卡片化导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;padding:14px 0;transition:padding .25s ease,background .25s ease,border-color .25s ease;border-bottom:1px solid transparent}
.site-header.is-scrolled{padding:8px 0;background:rgba(246,244,239,.97);border-bottom-color:var(--line)}
.nav-shell{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;gap:20px;min-height:88px;transition:min-height .25s ease}
.site-header.is-scrolled .nav-inner{min-height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:900;font-size:18px;letter-spacing:-.02em;flex:none}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--ink);color:var(--lime);display:grid;place-items:center;font-size:14px}
.brand:hover .brand-mark{background:var(--lime);color:var(--ink);transition:background .2s ease,color .2s ease}
.nav-tiles{display:flex;align-items:center;gap:6px;flex:1}
.nav-tile{
  display:flex;align-items:center;gap:9px;padding:9px 11px;border-radius:var(--r-sm);
  border:1px solid transparent;transition:background .2s ease,border-color .2s ease,color .2s ease;min-height:52px;
}
.nav-tile:hover{background:var(--sub);border-color:rgba(201,242,76,.9)}
.nav-tile-ic{width:30px;height:30px;flex:none;display:grid;place-items:center;border-radius:9px;background:var(--sub);font-size:12.5px;color:var(--ink);transition:background .2s ease,color .2s ease}
.nav-tile-tx strong{display:block;font-size:13.5px;font-weight:700;line-height:1.35;white-space:nowrap}
.nav-tile-tx em{display:block;font-style:normal;font-size:11px;color:var(--gray);line-height:1.4;white-space:nowrap}
.nav-tile.is-active{background:var(--ink);color:#fff}
.nav-tile.is-active .nav-tile-ic{background:rgba(255,255,255,.12);color:var(--lime)}
.nav-tile.is-active .nav-tile-tx em{color:rgba(255,255,255,.68)}
.nav-cta{display:flex;align-items:center;gap:10px;flex:none}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:var(--card);cursor:pointer;place-items:center;font-size:16px;
}
.nav-toggle:hover{background:var(--sub)}
.nav-overlay{
  position:fixed;inset:0;background:rgba(16,17,20,.42);opacity:0;pointer-events:none;
  transition:opacity .25s ease;z-index:55;
}
body.drawer-open .nav-overlay{opacity:1;pointer-events:auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;min-height:46px;
  transition:background .2s ease,color .2s ease,transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.btn i{font-size:13px}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--lime);color:var(--ink);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-2px)}
.btn-lime{background:var(--lime);color:var(--ink)}
.btn-lime:hover{background:#fff;transform:translateY(-2px)}
.btn-block{width:100%}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}
.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:14.5px;position:relative}
.text-link::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:1.5px;background:var(--lime);transition:width .25s ease}
.text-link:hover::after{width:100%}
.text-link i{transition:transform .2s ease}
.text-link:hover i{transform:translateX(4px)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.02em;background:var(--paper);
  border:1px solid var(--line);color:var(--gray);white-space:nowrap;
}
.badge-lime{background:var(--lime);border-color:var(--lime);color:var(--ink)}
.badge-dark{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.chips li{
  font-size:12.5px;color:var(--gray);background:var(--sub);border-radius:999px;
  padding:4px 11px;line-height:1.7;
}

/* ---------- 面包屑 ---------- */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--gray);margin-bottom:22px}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:var(--line)}
.crumbs a:hover{color:var(--ink)}
.crumbs .current{color:var(--ink);font-weight:600}

/* ---------- 分类标题带 ---------- */
.page-hero{padding:44px 0 8px}
.page-hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:52px;align-items:center}
.page-hero h1{font-size:clamp(2.1rem,4.2vw,3.5rem);margin-bottom:20px}
.page-hero .lead{font-size:17.5px}
.page-hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.page-hero-media{position:relative}
.page-hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);
  border:1px solid var(--line);box-shadow:var(--sh-1);
}
.page-hero-media figcaption{font-size:12px;color:var(--gray);margin-top:10px}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}

/* ---------- 步骤流 ---------- */
.steps{margin-top:56px;border-top:1px solid var(--line)}
.step{
  display:grid;grid-template-columns:190px 1fr;gap:36px;align-items:start;
  padding:38px 0;border-bottom:1px solid var(--line);position:relative;
}
.step::before{content:"";position:absolute;left:0;top:38px;bottom:38px;width:3px;background:transparent;transition:background .22s ease}
.step:hover::before{background:var(--lime)}
.step-no{
  font-size:clamp(3rem,6vw,4.6rem);font-weight:900;line-height:.86;letter-spacing:-.05em;
  color:var(--ink);transition:transform .22s ease;
}
.step:hover .step-no{transform:translateX(6px)}
.step h3{font-size:1.25rem;margin-bottom:10px}
.step p{color:var(--gray);max-width:640px}
.step-meta{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--gray);font-weight:700;margin-top:14px;display:block}

/* ---------- 能力卡非对称网格 ---------- */
.cap-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:24px;margin-top:52px}
.cap-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.cap-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(201,242,76,.9)}
.cap-card h3{font-size:1.2rem;margin-bottom:10px}
.cap-card p{color:var(--gray);font-size:15px}
.cap-card.big{grid-row:span 2;display:flex;flex-direction:column}
.cap-card.big img{border-radius:14px;aspect-ratio:16/10;object-fit:cover;width:100%;margin-bottom:22px}
.cap-card.big p{margin-bottom:18px}
.cap-card.wide{grid-column:1/-1;display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:center}
.cap-card.wide .wide-list li{
  display:flex;gap:10px;align-items:flex-start;padding:12px 0;border-bottom:1px dashed var(--line);
  font-size:15px;color:var(--gray);
}
.cap-card.wide .wide-list li:last-child{border-bottom:0}
.cap-card.wide .wide-list i{color:var(--ink);font-size:13px;margin-top:7px}

/* ---------- 深色参数带 ---------- */
.band-dark{
  background:var(--ink);color:rgba(246,244,239,.86);position:relative;overflow:hidden;
  padding:var(--sec) 0;
}
.band-dark::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.16;
}
.band-dark .container{position:relative;z-index:2}
.band-dark h2{color:#fff;font-size:clamp(1.6rem,3vw,2.5rem);margin-bottom:16px}
.band-dark .sec-head{max-width:720px}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:56px}
.stat-row li{
  border-top:2px solid var(--lime);padding-top:22px;
}
.stat-row strong{
  display:block;font-size:clamp(1.9rem,3.4vw,2.7rem);font-weight:900;color:#fff;
  letter-spacing:-.03em;line-height:1.1;margin-bottom:8px;
}
.stat-row span{font-size:14px;color:rgba(246,244,239,.7)}
.band-note{
  margin-top:44px;padding-top:24px;border-top:1px solid rgba(246,244,239,.16);
  display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;font-size:14px;color:rgba(246,244,239,.68);
}

/* ---------- 场景横向滚动 ---------- */
.scroll-row{
  display:flex;gap:20px;overflow-x:auto;padding:6px 4px 22px;margin-top:44px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.scroll-row::-webkit-scrollbar{height:6px}
.scroll-row::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px}
.scene-card{
  flex:0 0 320px;scroll-snap-align:start;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(201,242,76,.9)}
.scene-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--sub)}
.scene-card .scene-bd{padding:22px}
.scene-card h3{font-size:1.05rem;margin:12px 0 8px}
.scene-card p{font-size:14.5px;color:var(--gray)}

/* ---------- FAQ ---------- */
.faq{max-width:900px;margin:48px auto 0;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;display:flex;gap:18px;justify-content:space-between;
  align-items:flex-start;padding:22px 4px;font-weight:700;font-size:17px;line-height:1.6;
  transition:padding-left .2s ease,color .2s ease;
}
.faq summary:hover{padding-left:12px}
.faq summary::-webkit-details-marker{display:none}
.chev{
  flex:none;width:30px;height:30px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;font-size:11px;color:var(--gray);
  transition:transform .25s ease,background .25s ease,border-color .25s ease,color .25s ease;
}
.faq details[open] .chev{transform:rotate(180deg);background:var(--lime);border-color:var(--lime);color:var(--ink)}
.faq .ans{padding:0 4px 26px;color:#3c3d3a;max-width:760px;font-size:15.5px}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink);padding:var(--sec) 0;position:relative;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  opacity:.12;pointer-events:none;
}
.cta-band .container{position:relative;z-index:2}
.cta-card{
  background:var(--card);color:var(--ink);border-radius:var(--r-card);padding:44px;
  display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;box-shadow:var(--sh-2);
}
.cta-card h2{font-size:clamp(1.5rem,2.6vw,2.1rem);margin-bottom:14px}
.cta-card p{color:var(--gray);font-size:15.5px}
.cta-form{display:grid;gap:14px}
.field label{display:block;font-size:13.5px;font-weight:700;margin-bottom:7px}
.field .req{color:var(--ink);background:var(--lime);border-radius:4px;font-size:11px;padding:1px 5px;margin-left:6px}
.field input,.field select{
  width:100%;padding:13px 15px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:#fff;font-size:15px;transition:border-color .2s ease,box-shadow .2s ease;
}
.field input:focus,.field select:focus{outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(201,242,76,.35)}
.field input::placeholder{color:#a5a49f}
.form-note{font-size:12.5px;color:var(--gray);line-height:1.7}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);color:rgba(246,244,239,.78);padding:76px 0 32px;font-size:14.5px;
  border-top:1px solid rgba(201,242,76,.22);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand strong{font-size:18px;color:#fff;display:block;margin-bottom:14px;letter-spacing:-.01em}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(246,244,239,.7)}
.footer-col h4{
  font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:rgba(246,244,239,.5);
  margin-bottom:16px;font-weight:700;
}
.footer-col ul li{margin-bottom:11px}
.footer-col a{color:rgba(246,244,239,.78);transition:color .2s ease}
.footer-col a:hover{color:var(--lime)}
.footer-col p{font-size:14px;line-height:1.9;color:rgba(246,244,239,.7)}
.footer-col b{color:#fff;font-weight:700}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(246,244,239,.14);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;
  font-size:12.5px;color:rgba(246,244,239,.55);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .35s ease,transform .35s ease}
.reveal.in{opacity:1;transform:none}
.reveal:nth-child(2){transition-delay:.06s}
.reveal:nth-child(3){transition-delay:.12s}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  :root{--cw:1180px}
}
@media (max-width:1279px){
  .nav-tile-tx em{display:none}
  .nav-tile{min-height:44px}
}
@media (max-width:1199px){
  .cap-grid{grid-template-columns:1fr}
  .cap-card.big{grid-row:auto}
  .cap-card.wide{grid-template-columns:1fr}
}
@media (max-width:1023px){
  :root{--sec:88px;--pad:28px}
  .nav-toggle{display:grid}
  .nav-tiles{
    position:fixed;top:0;right:0;height:100vh;width:min(86vw,370px);z-index:60;
    background:var(--card);flex-direction:column;align-items:stretch;gap:10px;
    padding:92px 20px 28px;transform:translateX(103%);
    transition:transform .28s ease;box-shadow:-20px 0 46px -26px rgba(16,17,20,.5);
    overflow-y:auto;border-left:1px solid var(--line);
  }
  body.drawer-open .nav-tiles{transform:translateX(0)}
  .nav-tile{padding:14px 14px;min-height:56px}
  .nav-tile-tx em{display:block}
  .page-hero-grid{grid-template-columns:1fr;gap:32px}
  .page-hero-media{order:-1}
  .step{grid-template-columns:1fr;gap:14px}
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .cta-card{grid-template-columns:1fr;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--sec:72px;--pad:20px}
  body{font-size:16px}
  .topbar-msg span{display:none}
  .cap-card.wide{grid-column:auto}
  .step-no{font-size:3rem}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:480px){
  :root{--sec:64px}
  h1{font-size:2rem !important}
  .page-hero{padding-top:28px}
  .btn{width:100%}
  .page-hero-actions{flex-direction:column}
  .cap-card,.scene-card .scene-bd{padding:20px}
  .cta-card{padding:24px}
  .stat-row{grid-template-columns:1fr;gap:18px}
  .badge{font-size:11px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category4 */
:root{
  --ink:#101114;
  --paper:#F6F4EF;
  --card:#FFFFFF;
  --sub:#EFECE4;
  --lime:#C9F24C;
  --graphite:#6E6F6A;
  --line:#E3DFD6;
  --ok:#3F9E6A;
  --warn:#D98A2B;
  --err:#C4553F;
  --r-card:20px;
  --r-btn:999px;
  --r-in:12px;
  --sh-1:0 1px 2px rgba(16,17,20,.04);
  --sh-2:0 18px 40px -20px rgba(16,17,20,.28);
  --c-max:1280px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  font-weight:400;
  letter-spacing:.005em;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:900;letter-spacing:-.02em;line-height:1.22}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:var(--lime);color:var(--ink)}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.container{width:100%;max-width:var(--c-max);margin:0 auto;padding:0 40px}

/* ---------- 通知条 ---------- */
.notice-bar{background:var(--ink);color:rgba(246,244,239,.86);font-size:13.5px}
.notice-inner{display:flex;align-items:center;gap:12px;justify-content:space-between;min-height:44px;flex-wrap:wrap}
.notice-left{display:flex;align-items:center;gap:10px}
.dot{width:8px;height:8px;border-radius:999px;background:var(--lime);flex:none;box-shadow:0 0 0 3px rgba(201,242,76,.18)}
.notice-bar a{color:var(--lime);border-bottom:1px solid rgba(201,242,76,.45);padding-bottom:1px}
.notice-bar a:hover{border-bottom-color:var(--lime)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.94);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid transparent;
  transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-stuck{background:rgba(246,244,239,.96);border-bottom-color:var(--line);box-shadow:var(--sh-1)}
.header-inner{display:flex;align-items:center;gap:24px;min-height:88px;transition:min-height .2s ease}
.site-header.is-stuck .header-inner{min-height:64px}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand-mark{
  width:42px;height:42px;border-radius:14px;background:var(--ink);color:var(--lime);
  display:grid;place-items:center;font-size:17px;flex:none;transition:.2s ease;
}
.brand:hover .brand-mark{background:var(--lime);color:var(--ink)}
.brand-tx{display:flex;flex-direction:column;line-height:1.2}
.brand-tx strong{font-size:17px;font-weight:900;letter-spacing:-.01em}
.brand-tx em{font-style:normal;font-size:12px;color:var(--graphite);letter-spacing:.06em}

.nav-tiles{
  flex:1 1 auto;display:flex;align-items:center;gap:8px;justify-content:center;
  background:var(--sub);border:1px solid var(--line);border-radius:18px;padding:6px;
}
.nav-tile{
  display:flex;align-items:center;gap:10px;padding:9px 14px;border-radius:14px;
  background:transparent;border:1px solid transparent;
  transition:background .2s ease,border-color .2s ease,transform .2s ease;min-height:44px;
}
.nav-tile-ic{
  width:32px;height:32px;border-radius:10px;background:var(--card);color:var(--ink);
  display:grid;place-items:center;font-size:13px;flex:none;transition:.2s ease;
}
.nav-tile-tx{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.nav-tile-tx strong{font-size:13.5px;font-weight:700;white-space:nowrap}
.nav-tile-tx em{font-style:normal;font-size:11.5px;color:var(--graphite);white-space:nowrap}
.nav-tile:hover{background:var(--card);border-color:rgba(201,242,76,.9);transform:translateY(-2px)}
.nav-tile:hover .nav-tile-ic{background:var(--lime)}
.nav-tile.is-active{background:var(--ink);border-color:var(--ink)}
.nav-tile.is-active .nav-tile-tx strong{color:var(--paper)}
.nav-tile.is-active .nav-tile-tx em{color:rgba(246,244,239,.62)}
.nav-tile.is-active .nav-tile-ic{background:rgba(246,244,239,.12);color:var(--lime)}

.header-cta{display:flex;align-items:center;gap:12px;flex:none}
.nav-toggle{
  display:none;width:46px;height:46px;border-radius:14px;border:1px solid var(--line);
  background:var(--card);cursor:pointer;font-size:16px;
}
.nav-toggle:hover{border-color:var(--ink)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:14.5px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background .2s ease,color .2s ease,transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--lime);color:var(--ink);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-2px)}
.btn-lime{background:var(--lime);color:var(--ink)}
.btn-lime:hover{background:var(--ink);color:var(--lime);transform:translateY(-2px)}
.btn-sm{min-height:42px;padding:0 18px;font-size:13.5px}
.btn-block{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;
  color:var(--ink);position:relative;padding-bottom:3px;
}
.link-arrow i{transition:transform .2s ease}
.link-arrow::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;
  background:var(--lime);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.link-arrow:hover::after{transform:scaleX(1)}
.link-arrow:hover i{transform:translateX(4px)}

/* ---------- 面包屑 ---------- */
.crumb-wrap{padding:26px 0 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--graphite)}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li::after{content:"/";color:var(--line)}
.crumb li:last-child::after{display:none}
.crumb a:hover{color:var(--ink)}
.crumb .is-now{color:var(--ink);font-weight:700}

/* ---------- 分类标题带 ---------- */
.cat-band{padding:28px 0 64px}
.band-grid{
  display:grid;grid-template-columns:1.35fr .85fr;gap:48px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:44px 48px;box-shadow:var(--sh-1);
}
.tagline{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;
  letter-spacing:.08em;text-transform:uppercase;color:var(--ink);
  background:var(--lime);border-radius:999px;padding:5px 14px;
}
.band-grid h1{font-size:clamp(2rem,4vw,3.1rem);margin:18px 0 16px}
.band-lead{font-size:16.5px;color:var(--graphite);max-width:44ch}
.band-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.band-media{
  border-radius:var(--r-card);overflow:hidden;background:var(--sub);
  border:1px solid var(--line);aspect-ratio:4/3;
}
.band-media img{width:100%;height:100%;object-fit:cover}

/* ---------- 通用区块 ---------- */
.section{padding:0 0 96px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;flex-wrap:wrap}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.2rem)}
.section-head p{font-size:14.5px;color:var(--graphite);margin-top:10px;max-width:56ch}
.kicker{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--graphite);font-weight:700;display:block;margin-bottom:10px}

/* ---------- 横向精选条 ---------- */
.rail{
  display:flex;gap:20px;overflow-x:auto;padding:4px 4px 20px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-track{background:var(--sub);border-radius:999px}
.rail::-webkit-scrollbar-thumb{background:var(--ink);border-radius:999px}
.rail-card{
  flex:0 0 300px;scroll-snap-align:start;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(201,242,76,.9)}
.rail-media{aspect-ratio:16/10;background:var(--sub);overflow:hidden}
.rail-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.rail-card:hover .rail-media img{transform:scale(1.04)}
.rail-body{padding:20px 22px 24px}
.rail-body h3{font-size:16px;line-height:1.5;margin-bottom:8px}
.rail-body p{font-size:13.5px;color:var(--graphite);line-height:1.7}
.rail-meta{display:flex;align-items:center;justify-content:space-between;margin-top:16px;font-size:12.5px;color:var(--graphite)}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;
  border-radius:999px;padding:4px 12px;background:var(--card);
  border:1px solid var(--line);color:var(--graphite);letter-spacing:.04em;
}
.badge-lime{background:var(--lime);border-color:var(--lime);color:var(--ink)}

/* ---------- 杂志瀑布 ---------- */
.mag{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.mag-col{display:flex;flex-direction:column;gap:28px}
.mag-col.offset{margin-top:64px}
.mag-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.mag-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(201,242,76,.9)}
.mag-media{aspect-ratio:16/10;background:var(--sub);overflow:hidden}
.mag-card.square .mag-media{aspect-ratio:4/3}
.mag-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.mag-card:hover .mag-media img{transform:scale(1.04)}
.mag-body{padding:26px 28px 30px}
.mag-body h3{font-size:20px;line-height:1.42;margin:14px 0 10px}
.mag-card.square .mag-body h3{font-size:17.5px}
.mag-body p{font-size:14.5px;color:var(--graphite);line-height:1.8}
.mag-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.mag-foot time{font-size:12.5px;color:var(--graphite)}

/* ---------- 墨黑观察数据带 ---------- */
.dark-band{
  background:var(--ink);color:var(--paper);border-radius:28px;
  padding:72px 64px;margin:0 0 96px;position:relative;overflow:hidden;
}
.dark-band::after{
  content:"";position:absolute;right:-120px;top:-120px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,242,76,.22),rgba(201,242,76,0) 68%);
}
.dark-band h2{font-size:clamp(1.5rem,2.6vw,2.2rem);max-width:22ch}
.dark-band .line{width:96px;height:3px;background:var(--lime);border-radius:999px;margin:24px 0 8px}
.dark-band .sub{color:rgba(246,244,239,.66);font-size:15px;max-width:60ch;margin-top:10px}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin-top:52px;position:relative;z-index:1}
.stat b{display:block;font-size:clamp(2rem,3.6vw,3rem);font-weight:900;letter-spacing:-.03em;color:var(--lime);line-height:1.1}
.stat span{display:block;font-size:13.5px;color:rgba(246,244,239,.72);margin-top:10px;line-height:1.7}

/* ---------- 复盘步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px 28px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(201,242,76,.9)}
.step .num{
  font-size:clamp(2.4rem,4vw,3.4rem);font-weight:900;letter-spacing:-.04em;
  color:var(--sub);line-height:1;
}
.step:hover .num{color:var(--lime)}
.step h3{font-size:18px;margin:16px 0 10px}
.step p{font-size:14.5px;color:var(--graphite);line-height:1.8}
.step ul{margin-top:16px;display:flex;flex-direction:column;gap:8px}
.step li{font-size:13.5px;color:var(--graphite);padding-left:16px;position:relative}
.step li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:2px;background:var(--lime);
}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:1.5fr .9fr;gap:40px;align-items:start}
.faq-list{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
.faq-item+.faq-item{border-top:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:20px;padding:22px 28px;font-weight:700;font-size:16px;transition:background .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--paper)}
.faq-item summary .chev{
  width:30px;height:30px;border-radius:999px;background:var(--sub);display:grid;place-items:center;
  flex:none;font-size:12px;color:var(--ink);transition:transform .25s ease,background .2s ease;
}
.faq-item[open] summary .chev{transform:rotate(180deg);background:var(--lime)}
.faq-item .ans{padding:0 28px 24px;font-size:14.8px;color:var(--graphite);line-height:1.85}
.faq-side{
  background:var(--ink);color:var(--paper);border-radius:var(--r-card);padding:32px 30px;
}
.faq-side h3{font-size:19px;margin-bottom:12px}
.faq-side p{font-size:14.5px;color:rgba(246,244,239,.72);line-height:1.8}
.faq-side ul{margin:22px 0 26px;display:flex;flex-direction:column;gap:12px}
.faq-side li{font-size:14px;color:rgba(246,244,239,.86);display:flex;gap:10px;align-items:flex-start}
.faq-side li i{color:var(--lime);margin-top:6px;font-size:12px}

/* ---------- CTA ---------- */
.cta-wrap{padding:0 0 96px}
.cta{
  background:var(--ink);color:var(--paper);border-radius:28px;padding:64px 56px;
  display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;
}
.cta h2{font-size:clamp(1.6rem,3vw,2.5rem)}
.cta p{color:rgba(246,244,239,.7);margin-top:16px;font-size:15.5px;max-width:48ch}
.cta-form{background:var(--card);border-radius:var(--r-card);padding:28px;color:var(--ink)}
.cta-form label{display:block;font-size:13.5px;font-weight:700;margin-bottom:10px}
.cta-form .req{color:var(--lime);font-weight:900}
.field{
  width:100%;min-height:48px;border-radius:var(--r-in);border:1px solid var(--line);
  background:var(--card);padding:0 16px;font-size:14.5px;transition:border-color .2s ease,box-shadow .2s ease;
}
.field:focus{outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(201,242,76,.28)}
.field::placeholder{color:var(--graphite)}
.form-row{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.form-hint{font-size:12.5px;color:var(--graphite);margin-top:14px;line-height:1.7}
.form-btns{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(246,244,239,.8);padding:72px 0 32px;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand strong{display:block;font-size:20px;color:var(--paper);font-weight:900;letter-spacing:-.01em}
.footer-brand p{font-size:14px;line-height:1.85;margin-top:14px;color:rgba(246,244,239,.66);max-width:34ch}
.footer-col h4{
  font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:rgba(246,244,239,.6);
  margin-bottom:18px;font-weight:700;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:rgba(246,244,239,.82);transition:color .2s ease,padding-left .2s ease}
.footer-col a:hover{color:var(--lime);padding-left:4px}
.footer-col p{font-size:14px;line-height:1.9;color:rgba(246,244,239,.66)}
.footer-col p b{color:var(--paper);font-weight:700}
.footer-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid rgba(246,244,239,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(246,244,239,.5);
}

/* ---------- 移动端抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,17,20,.42);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  .container{max-width:1180px}
}
@media (max-width:1199px){
  .nav-tile-tx em{display:none}
  .nav-tile{padding:8px 12px}
  .band-grid{grid-template-columns:1fr;gap:32px;padding:36px}
  .band-media{max-width:520px}
  .mag{gap:22px}
  .mag-col.offset{margin-top:44px}
}
@media (max-width:1023px){
  .container{padding:0 28px}
  .nav-toggle{display:grid;place-items:center}
  .nav-tiles{
    position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);z-index:80;
    flex-direction:column;align-items:stretch;justify-content:flex-start;gap:10px;
    background:var(--paper);border:none;border-left:1px solid var(--line);border-radius:0;
    padding:88px 20px 28px;transform:translateX(102%);transition:transform .28s ease;
    overflow-y:auto;
  }
  .nav-tiles.is-open{transform:none;box-shadow:-18px 0 40px -24px rgba(16,17,20,.4)}
  .nav-tile{background:var(--card);border-color:var(--line);border-radius:16px;padding:12px 14px}
  .nav-tile-tx em{display:block}
  .section{padding-bottom:80px}
  .dark-band{padding:52px 32px;margin-bottom:80px}
  .stat-row{grid-template-columns:repeat(2,1fr);gap:26px}
  .steps{grid-template-columns:1fr;gap:20px}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .cta{grid-template-columns:1fr;padding:44px 32px;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .notice-inner{min-height:auto;padding:10px 0;font-size:12.5px}
  .header-inner{min-height:72px;gap:14px}
  .site-header.is-stuck .header-inner{min-height:62px}
  .brand-tx em{display:none}
  .section{padding-bottom:64px}
  .cat-band{padding-bottom:56px}
  .band-grid{padding:26px 22px;gap:24px}
  .band-actions .btn{width:100%}
  .mag{grid-template-columns:1fr;gap:20px}
  .mag-col{gap:20px}
  .mag-col.offset{margin-top:0}
  .mag-body{padding:20px 20px 24px}
  .rail-card{flex:0 0 82vw}
  .dark-band{border-radius:22px;padding:36px 22px}
  .stat-row{grid-template-columns:1fr 1fr;gap:22px;margin-top:36px}
  .faq-item summary{padding:18px 20px;font-size:15px}
  .faq-item .ans{padding:0 20px 20px}
  .faq-side{padding:26px 22px}
  .cta{border-radius:22px;padding:32px 22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{font-size:12px}
}
@media (max-width:480px){
  .band-grid h1{font-size:1.85rem}
  .section-head h2{font-size:1.5rem}
  .mag-body h3{font-size:17px}
  .stat-row{grid-template-columns:1fr}
  .form-btns .btn{width:100%}
}

/* roulang page: category5 */
:root{
  --ink:#101114;
  --paper:#F6F4EF;
  --card:#FFFFFF;
  --sub:#EFECE4;
  --lime:#C9F24C;
  --gray:#6E6F6A;
  --line:#E3DFD6;
  --ok:#3F9E6A;
  --warn:#D98A2B;
  --err:#C4553F;
  --r-lg:20px;
  --r-md:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,17,20,.04);
  --sh-2:0 18px 40px -20px rgba(16,17,20,.28);
  --max:1280px;
  --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(--ink);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  font-weight:400;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-lg);}
a{color:var(--ink);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--ink);}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:900;letter-spacing:-0.02em;line-height:1.25;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 40px;}

/* ---------- 通用排版与组件 ---------- */
.eyebrow{
  font-family:"Space Grotesk","Noto Sans SC",sans-serif;
  font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--gray);font-weight:700;display:inline-flex;align-items:center;gap:8px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--lime);border-radius:2px;}
.lead{color:var(--gray);font-size:16.5px;}
.muted{color:var(--gray);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:var(--card);border:1px solid var(--line);
  font-size:12px;letter-spacing:.04em;color:var(--gray);font-weight:700;white-space:nowrap;
}
.badge-lime{background:var(--lime);border-color:var(--lime);color:var(--ink);}
.badge-dark{background:var(--ink);border-color:var(--ink);color:var(--paper);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:12px 26px;border-radius:var(--r-pill);
  border:1px solid transparent;font-weight:700;font-size:15px;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn i{font-size:13px;transition:transform .2s var(--ease);}
.btn-primary{background:var(--ink);color:var(--paper);}
.btn-primary:hover{background:var(--lime);color:var(--ink);transform:translateY(-2px);}
.btn-primary:hover i{transform:translateX(4px);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-2px);}
.btn-lime{background:var(--lime);color:var(--ink);}
.btn-lime:hover{background:var(--paper);color:var(--ink);transform:translateY(-2px);}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:15px;
  background-image:linear-gradient(var(--lime),var(--lime));
  background-repeat:no-repeat;background-size:0% 2px;background-position:0 100%;
  padding-bottom:3px;transition:background-size .28s var(--ease);
}
.link-arrow:hover{background-size:100% 2px;}
.link-arrow i{transition:transform .2s var(--ease);}
.link-arrow:hover i{transform:translateX(4px);}

.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(201,242,76,.9);}
.card h3{font-size:1.25rem;margin-bottom:10px;}
.card p{color:var(--gray);font-size:15.5px;}
.icon-box{
  width:48px;height:48px;border-radius:14px;background:var(--sub);
  display:flex;align-items:center;justify-content:center;font-size:19px;color:var(--ink);margin-bottom:18px;
}
.icon-box-lime{background:var(--lime);}

/* ---------- 顶栏与导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:200;
  background:rgba(246,244,239,.92);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease),padding .25s var(--ease);
}
.site-header.is-scrolled{background:rgba(246,244,239,.96);border-bottom-color:var(--line);}
.header-inner{
  display:flex;align-items:center;gap:24px;
  padding:16px 0;transition:padding .25s var(--ease);
}
.site-header.is-scrolled .header-inner{padding:9px 0;}
.brand{display:flex;flex-direction:column;gap:2px;flex:0 0 auto;}
.brand-mark{font-size:19px;font-weight:900;letter-spacing:-0.02em;}
.brand-sub{font-size:11px;letter-spacing:.12em;color:var(--gray);font-weight:700;}
.nav-tiles{
  display:flex;align-items:stretch;gap:8px;flex:1 1 auto;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:8px;box-shadow:var(--sh-1);min-width:0;
}
.nav-tile{
  display:flex;align-items:center;gap:10px;flex:1 1 0;min-width:0;
  padding:10px 12px;border-radius:14px;border:1px solid transparent;
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.nav-tile:hover{background:var(--sub);border-color:rgba(201,242,76,.9);}
.nav-tile.is-active{background:var(--ink);border-color:var(--ink);color:var(--paper);}
.nav-tile.is-active .nav-tile-tx em{color:rgba(246,244,239,.7);}
.nav-tile-ic{
  width:32px;height:32px;flex:0 0 32px;border-radius:10px;background:var(--sub);
  display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--ink);
}
.nav-tile.is-active .nav-tile-ic{background:var(--lime);}
.nav-tile-tx{display:flex;flex-direction:column;min-width:0;}
.nav-tile-tx strong{font-size:14px;font-weight:700;white-space:nowrap;}
.nav-tile-tx em{font-style:normal;font-size:11.5px;color:var(--gray);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-burger{
  display:none;width:46px;height:46px;border-radius:var(--r-md);
  background:var(--card);border:1px solid var(--line);cursor:pointer;font-size:16px;
}
.nav-burger:hover{border-color:var(--ink);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,17,20,.45);opacity:0;visibility:hidden;
  transition:opacity .25s var(--ease),visibility .25s var(--ease);z-index:300;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;top:0;right:0;height:100%;width:min(360px,88vw);z-index:310;
  background:var(--paper);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .3s var(--ease);
  padding:24px 20px;overflow-y:auto;display:flex;flex-direction:column;gap:16px;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-head strong{font-size:17px;font-weight:900;}
.drawer-close{width:42px;height:42px;border-radius:var(--r-md);background:var(--card);border:1px solid var(--line);cursor:pointer;}
.drawer-tiles{display:flex;flex-direction:column;gap:10px;}
.drawer-tiles .nav-tile{background:var(--card);border:1px solid var(--line);}
.drawer-tiles .nav-tile.is-active{background:var(--ink);color:var(--paper);}
.drawer-note{font-size:13px;color:var(--gray);border-top:1px solid var(--line);padding-top:16px;}

/* ---------- 面包屑 ---------- */
.crumbs{padding:26px 0 0;}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--gray);}
.crumbs li{display:flex;align-items:center;gap:8px;}
.crumbs li::after{content:"/";color:var(--line);}
.crumbs li:last-child::after{content:"";}
.crumbs a{color:var(--gray);}
.crumbs a:hover{color:var(--ink);}
.crumbs .is-current{color:var(--ink);font-weight:700;}

/* ---------- 分类标题带 ---------- */
.band{padding:34px 0 0;}
.band-grid{
  display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:26px;
  padding:48px;box-shadow:var(--sh-1);position:relative;overflow:hidden;
}
.band-grid::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,242,76,.35),transparent 68%);pointer-events:none;
}
.band h1{font-size:clamp(2.1rem,4.4vw,3.4rem);margin:18px 0 16px;position:relative;z-index:1;}
.band-lead{color:var(--gray);font-size:17px;max-width:34em;position:relative;z-index:1;}
.band-lead + .band-lead{margin-top:8px;}
.band-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;position:relative;z-index:1;}
.band-media{position:relative;z-index:1;}
.band-media img{aspect-ratio:4/3;object-fit:cover;width:100%;border:1px solid var(--line);}
.band-media figcaption{font-size:12px;color:var(--gray);margin-top:10px;letter-spacing:.04em;}

/* ---------- 区块 ---------- */
.section{padding:96px 0 0;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{font-size:clamp(1.6rem,3vw,2.4rem);margin:14px 0 12px;}
.section-head p{color:var(--gray);}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}

/* 支持入口卡：一主三副 */
.entry-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;grid-template-rows:auto auto;gap:20px;}
.entry-main{grid-row:span 2;display:flex;flex-direction:column;justify-content:space-between;background:var(--ink);border-color:var(--ink);color:var(--paper);}
.entry-main h3{color:var(--paper);font-size:1.6rem;}
.entry-main p{color:rgba(246,244,239,.72);}
.entry-main .icon-box{background:rgba(246,244,239,.08);color:var(--lime);}
.entry-main .btn-ghost{border-color:rgba(246,244,239,.5);color:var(--paper);}
.entry-main .btn-ghost:hover{background:var(--lime);border-color:var(--lime);color:var(--ink);}
.entry-list{margin-top:22px;display:flex;flex-direction:column;gap:10px;}
.entry-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:rgba(246,244,239,.78);}
.entry-list i{color:var(--lime);margin-top:6px;font-size:11px;}

/* 流程步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;border-top:1px solid var(--line);padding-top:40px;}
.step-no{
  font-family:"Space Grotesk",sans-serif;font-size:clamp(2.4rem,5vw,3.4rem);font-weight:700;
  letter-spacing:-0.04em;line-height:1;color:var(--ink);
}
.step-no span{color:var(--lime);}
.step h3{font-size:1.15rem;margin:16px 0 8px;}
.step p{color:var(--gray);font-size:15px;}
.step-line{height:1px;background:var(--line);margin:18px 0 0;}

/* 指标条 */
.kpi-row{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:30px;}
.kpi{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;box-shadow:var(--sh-1);}
.kpi b{display:block;font-family:"Space Grotesk",sans-serif;font-size:2.2rem;font-weight:700;letter-spacing:-0.03em;line-height:1.1;}
.kpi span{font-size:14px;color:var(--gray);display:block;margin-top:6px;}

/* 表格 */
.table-wrap{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:8px;box-shadow:var(--sh-1);overflow-x:auto;
}
table.spec{min-width:640px;border-radius:14px;overflow:hidden;}
table.spec th{
  background:var(--ink);color:var(--paper);font-size:13px;font-weight:700;letter-spacing:.04em;
  text-align:left;padding:16px 20px;white-space:nowrap;
}
table.spec td{padding:16px 20px;font-size:15px;border-top:1px solid var(--line);color:var(--gray);}
table.spec tbody tr:nth-child(even){background:var(--sub);}
table.spec td strong{color:var(--ink);display:block;font-weight:700;}

/* FAQ + 联系卡 */
.support-grid{display:grid;grid-template-columns:1fr 372px;gap:32px;align-items:start;}
.faq{border-top:1px solid var(--line);}
.faq details{border-bottom:1px solid var(--line);}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;font-weight:700;font-size:17px;transition:padding .2s var(--ease),color .2s var(--ease);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover{padding-left:16px;}
.faq summary .chev{
  flex:0 0 32px;width:32px;height:32px;border-radius:50%;background:var(--sub);
  display:flex;align-items:center;justify-content:center;font-size:12px;
  transition:transform .25s var(--ease),background .25s var(--ease);
}
.faq details[open] summary .chev{transform:rotate(180deg);background:var(--lime);}
.faq .faq-body{background:var(--card);border-radius:14px;padding:0 20px 22px;color:var(--gray);font-size:15.5px;}
.faq details[open] .faq-body{margin-bottom:16px;padding:20px;}

.contact-card{
  background:var(--ink);color:var(--paper);border-radius:var(--r-lg);padding:32px;
  position:sticky;top:104px;box-shadow:var(--sh-2);
}
.contact-card h3{color:var(--paper);font-size:1.3rem;margin-bottom:12px;}
.contact-card p{color:rgba(246,244,239,.72);font-size:15px;}
.contact-meta{margin:24px 0;display:flex;flex-direction:column;gap:14px;}
.contact-meta li{display:flex;gap:12px;font-size:14.5px;color:rgba(246,244,239,.82);}
.contact-meta i{color:var(--lime);margin-top:5px;}
.contact-divider{height:1px;background:rgba(246,244,239,.16);margin:24px 0;}
.contact-card .badge{background:rgba(246,244,239,.08);border-color:rgba(246,244,239,.2);color:rgba(246,244,239,.85);}

/* 表单 */
.form-band{background:var(--ink);color:var(--paper);border-radius:28px;padding:56px;margin-top:96px;}
.form-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:start;}
.form-band h2{color:var(--paper);font-size:clamp(1.6rem,3vw,2.3rem);margin:14px 0 14px;}
.form-band .eyebrow{color:rgba(246,244,239,.7);}
.form-band p{color:rgba(246,244,239,.72);}
.form-points{margin-top:26px;display:flex;flex-direction:column;gap:12px;}
.form-points li{display:flex;gap:12px;font-size:15px;color:rgba(246,244,239,.82);}
.form-points i{color:var(--lime);margin-top:6px;font-size:11px;}
.form-card{background:var(--paper);border-radius:var(--r-lg);padding:32px;color:var(--ink);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13.5px;font-weight:700;margin-bottom:8px;letter-spacing:.02em;}
.field .req{color:var(--lime);}
.field input,.field select,.field textarea{
  width:100%;background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:13px 15px;font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{min-height:112px;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(201,242,76,.35);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--err);}
.field .err-msg{display:none;color:var(--err);font-size:13.5px;margin-top:6px;}
.field.has-error .err-msg{display:block;}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.form-note{font-size:13px;color:var(--gray);margin-top:14px;}
.form-success{
  display:none;margin-top:18px;padding:14px 16px;border-radius:var(--r-md);
  background:rgba(63,158,106,.12);border:1px solid rgba(63,158,106,.4);color:var(--ok);font-size:14.5px;
}
.form-success.is-show{display:block;}

/* CTA 带 */
.cta-band{
  margin-top:96px;background:var(--card);border:1px solid var(--line);border-radius:28px;
  padding:56px;display:grid;grid-template-columns:1.3fr auto;gap:32px;align-items:center;box-shadow:var(--sh-1);
}
.cta-band h2{font-size:clamp(1.5rem,2.8vw,2.2rem);margin-bottom:12px;}
.cta-band p{color:var(--gray);}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* 页脚 */
.site-footer{margin-top:110px;background:var(--ink);color:rgba(246,244,239,.8);padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;}
.footer-brand strong{display:block;font-size:19px;color:var(--paper);font-weight:900;margin-bottom:14px;}
.footer-brand p{font-size:14.5px;line-height:1.85;color:rgba(246,244,239,.7);}
.footer-col h4{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:rgba(246,244,239,.6);margin-bottom:16px;font-weight:700;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:rgba(246,244,239,.82);font-size:14.5px;}
.footer-col a:hover{color:var(--lime);}
.footer-col p{font-size:14.5px;color:rgba(246,244,239,.72);line-height:1.9;}
.footer-col p b{color:var(--paper);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(246,244,239,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(246,244,239,.6);
}

/* 滚动入场 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
.reveal:nth-child(2){transition-delay:60ms;}
.reveal:nth-child(3){transition-delay:120ms;}
.reveal:nth-child(4){transition-delay:180ms;}

/* 骨架与空态（备用） */
.skeleton{background:var(--sub);border-radius:var(--r-md);height:16px;position:relative;overflow:hidden;}
.skeleton::after{
  content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.7),transparent);
  animation:shimmer 1.4s infinite;
}
@keyframes shimmer{from{transform:translateX(-100%);}to{transform:translateX(100%);}}
.empty-state{
  text-align:center;padding:56px 24px;background:var(--card);border:1px dashed var(--line);border-radius:var(--r-lg);color:var(--gray);
}
.empty-state i{font-size:26px;color:var(--gray);display:block;margin-bottom:12px;}

/* 响应式 */
@media (max-width:1439px){
  .container{padding:0 40px;}
}
@media (max-width:1199px){
  .container{padding:0 28px;max-width:1180px;}
  .nav-tile-tx em{display:none;}
  .band-grid{padding:40px;gap:32px;}
  .entry-grid{grid-template-columns:1fr 1fr;}
  .entry-main{grid-row:span 1;grid-column:span 2;}
}
@media (max-width:1023px){
  body{font-size:16px;}
  .nav-tiles{display:none;}
  .nav-burger{display:inline-flex;align-items:center;justify-content:center;}
  .header-actions .btn{display:none;}
  .section{padding:72px 0 0;}
  .band-grid{grid-template-columns:1fr;}
  .band-media{order:-1;}
  .grid-4,.grid-3,.kpi-row,.steps{grid-template-columns:repeat(2,1fr);}
  .steps{gap:34px;}
  .support-grid{grid-template-columns:1fr;}
  .contact-card{position:static;}
  .form-band{padding:40px 32px;}
  .form-grid{grid-template-columns:1fr;gap:32px;}
  .cta-band{grid-template-columns:1fr;padding:40px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .band-grid{padding:28px 22px;border-radius:20px;}
  .band-cta .btn{flex:1 1 100%;}
  .grid-4,.grid-3,.grid-2,.kpi-row,.steps,.entry-grid{grid-template-columns:1fr;}
  .entry-main{grid-column:span 1;}
  .card{padding:22px;}
  .section{padding:56px 0 0;}
  .form-band{padding:28px 20px;border-radius:20px;}
  .form-card{padding:22px;}
  .field-row{grid-template-columns:1fr;}
  .cta-band{padding:28px 22px;border-radius:20px;}
  .site-footer{margin-top:72px;padding-top:52px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:480px){
  .band h1{font-size:2rem;}
  .nav-tile-tx strong{font-size:13.5px;}
  .brand-mark{font-size:17px;}
  .cta-actions .btn,.band-cta .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}