/* roulang page: index */
:root{
  --night-900:#150F2E;
  --night-800:#1E1740;
  --night-700:#2A2158;
  --amber-500:#F2A93B;
  --amber-300:#FFCE7A;
  --orbit-500:#2FB8A8;
  --paper:#F6F5FB;
  --paper-2:#EDE9F7;
  --ink-900:#1B1533;
  --ink-600:#5A5378;
  --ink-400:#8C86A8;
  --line-light:#E1DDF0;
  --line-dark:rgba(255,255,255,.10);
  --text-on-dark:#EDEAF7;
  --muted-on-dark:#A79FC7;
  --danger:#E4574C;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:10px;
  --shadow-light:0 10px 30px rgba(21,15,46,.10);
  --shadow-dark:0 20px 60px rgba(0,0,0,.45);
  --container:1240px;
  --nav-h:68px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-900);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .22s ease,opacity .22s ease}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.01em;line-height:1.3}
p{margin:0}
button,input{font-family:inherit;font-size:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--amber-500);outline-offset:2px}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--night-900);
  border-bottom:1px solid var(--line-dark);
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{box-shadow:0 12px 30px rgba(0,0,0,.35)}
.nav-inner{
  max-width:var(--container);margin:0 auto;padding:0 24px;
  height:var(--nav-h);display:flex;align-items:center;gap:24px;
}
.nav-left{flex:0 0 52%;display:flex;align-items:center;gap:26px;min-width:0}
.nav-right{flex:1 1 auto;display:flex;align-items:center;justify-content:flex-end;gap:14px;min-width:0}
.logo{display:inline-flex;align-items:center;gap:9px;color:var(--text-on-dark);flex:0 0 auto}
.logo-mark{width:18px;height:18px;flex:0 0 18px}
.logo-text{font-size:19px;font-weight:700;letter-spacing:.04em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:22px;min-width:0}
.nav-links a{
  position:relative;font-size:14px;color:var(--muted-on-dark);
  padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--amber-500);transition:width .25s ease;
}
.nav-links a:hover{color:var(--text-on-dark)}
.nav-links a:hover::after{width:60%}
.nav-links a.is-active{color:var(--text-on-dark)}
.nav-links a.is-active::after{width:60%}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:220px;height:36px;padding:0 12px;
  border:1px solid var(--line-dark);border-radius:var(--r-sm);
  background:rgba(255,255,255,.04);
  transition:border-color .22s ease,background .22s ease;
}
.nav-search:focus-within{border-color:var(--amber-500)}
.nav-search input{
  flex:1;min-width:0;height:100%;border:0;background:transparent;
  color:var(--text-on-dark);font-size:13px;outline:none;
}
.nav-search input::placeholder{color:var(--muted-on-dark)}
.nav-search svg{flex:0 0 14px;color:var(--muted-on-dark)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border-radius:var(--r-sm);
  font-size:15px;font-weight:500;letter-spacing:.01em;
  transition:transform .2s ease,background .22s ease,color .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.btn-primary{background:var(--amber-500);color:var(--night-900);font-weight:700}
.btn-primary:hover{background:var(--amber-300);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 3px rgba(242,169,59,.22)}
.btn-ghost{border:1px solid var(--line-dark);color:var(--text-on-dark);background:transparent}
.btn-ghost:hover{border-color:var(--amber-500);color:var(--amber-500)}
.btn-ghost:active{transform:translateY(1px)}
.btn-outline{border:1px solid var(--line-light);color:var(--ink-900);background:#fff}
.btn-outline:hover{border-color:var(--amber-500);color:#8a5a10}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.nav-cta{flex:0 0 auto}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-sm);
  border:1px solid var(--line-dark);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-on-dark);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text-on-dark)
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.drawer{
  position:fixed;inset:0;z-index:120;display:none;
}
.drawer.is-open{display:block}
.drawer-mask{position:absolute;inset:0;background:rgba(0,0,0,.55)}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(340px,86vw);
  background:var(--night-900);border-left:1px solid var(--line-dark);
  padding:26px 24px;overflow-y:auto;
  animation:slideIn .28s ease;
}
@keyframes slideIn{from{transform:translateX(24px);opacity:.4}to{transform:translateX(0);opacity:1}}
.drawer-panel .logo{margin-bottom:22px}
.drawer-panel nav a{
  display:block;font-size:16px;line-height:56px;color:var(--text-on-dark);
  border-bottom:1px solid var(--line-dark);
}
.drawer-panel nav a.is-active{color:var(--amber-500)}
.drawer-search{
  margin:20px 0 14px;display:flex;align-items:center;gap:8px;height:44px;
  padding:0 12px;border:1px solid var(--line-dark);border-radius:var(--r-sm);background:rgba(255,255,255,.05);
}
.drawer-search input{flex:1;border:0;background:transparent;color:var(--text-on-dark);font-size:14px;outline:none}
.drawer-close{
  position:absolute;top:20px;right:20px;width:36px;height:36px;border-radius:50%;
  border:1px solid var(--line-dark);color:var(--text-on-dark);font-size:18px;line-height:1;
}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;color:var(--text-on-dark);
  background:linear-gradient(160deg,var(--night-900) 0%,var(--night-800) 62%,var(--night-700) 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.10;
  background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:22px 22px;
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:52% 48%;gap:40px;
  padding:64px 0 56px;
}
.hero-copy{max-width:600px}
.eyebrow{
  display:inline-flex;align-items:center;gap:12px;
  font-size:13px;letter-spacing:.12em;color:var(--orbit-500);margin-bottom:20px;
}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--orbit-500)}
.hero h1{font-size:48px;line-height:1.18;color:var(--text-on-dark);max-width:14em}
.hero h1 em{font-style:normal;color:var(--amber-300)}
.hero-sub{
  margin-top:22px;font-size:17px;line-height:1.8;color:var(--muted-on-dark);max-width:30em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-actions .btn{height:48px;padding:0 26px;font-size:16px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 13px;border-radius:999px;
  font-size:13px;line-height:1;
}
.tag--orbit{border:1px solid rgba(47,184,168,.55);background:rgba(47,184,168,.12);color:#8FE6DB}
.tag--amber{border:1px solid rgba(242,169,59,.5);background:rgba(242,169,59,.12);color:var(--amber-300)}
.tag--light{border:1px solid var(--line-light);background:var(--paper-2);color:var(--ink-600)}
.hero-visual{position:relative;align-self:center}
.hero-media{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line-dark);box-shadow:var(--shadow-dark);
  aspect-ratio:3/2;
}
.hero-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.hero-media:hover img{transform:scale(1.03)}
.orbit-svg{position:absolute;right:-26px;top:-30px;width:230px;height:230px;pointer-events:none;opacity:.75}
.float-stat{
  position:absolute;left:-18px;bottom:-22px;min-width:172px;
  background:rgba(21,15,46,.92);border:1px solid var(--line-dark);
  border-radius:var(--r-md);padding:16px 18px;box-shadow:var(--shadow-dark);
}
.float-stat b{display:block;font-size:30px;line-height:1.1;color:var(--amber-300)}
.float-stat span{display:block;margin-top:6px;font-size:13px;color:var(--muted-on-dark)}
.hero-foot{
  position:relative;z-index:1;border-top:1px solid var(--line-dark);
  padding:20px 0 26px;display:flex;flex-wrap:wrap;align-items:center;gap:18px 30px;
}
.scroll-hint{display:inline-flex;align-items:center;gap:10px;font-size:13px;color:var(--muted-on-dark)}
.scroll-hint i{
  display:block;width:1px;height:18px;background:linear-gradient(var(--amber-500),transparent);
}
.trust-chips{display:flex;flex-wrap:wrap;gap:12px 28px;margin-left:auto}
.trust-chips li{font-size:13px;color:var(--text-on-dark);display:inline-flex;align-items:center;gap:8px}
.trust-chips li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--amber-500)}

/* ---------- bridge ---------- */
.bridge{
  background:var(--night-800);color:var(--text-on-dark);
  border-top:1px solid var(--line-dark);
}
.bridge-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:28px;padding:44px 0;
}
.bridge-claim{font-size:20px;font-weight:700;letter-spacing:.01em;max-width:24em}
.bridge-metrics{display:flex;flex-wrap:wrap;gap:40px}
.metric b{display:block;font-size:34px;line-height:1.1;color:var(--amber-500)}
.metric span{display:block;margin-top:6px;font-size:13px;color:var(--muted-on-dark)}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section--paper{background:var(--paper)}
.section--paper2{background:var(--paper-2)}
.section--dark{background:var(--night-900);color:var(--text-on-dark)}
.section-head{max-width:660px;margin-bottom:44px}
.section-head h2{font-size:34px;color:var(--ink-900)}
.section-head p{margin-top:14px;font-size:16px;color:var(--ink-600)}
.section--dark .section-head h2{color:var(--text-on-dark)}
.section--dark .section-head p{color:var(--muted-on-dark)}
.kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.1em;color:var(--orbit-500);margin-bottom:14px;
}
.kicker::before{content:"";width:22px;height:1px;background:var(--orbit-500)}

/* story */
.story-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:stretch}
.story-media{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line-light);
  box-shadow:var(--shadow-light);min-height:420px;
}
.story-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.story-media:hover img{transform:scale(1.03)}
.story-body h2{font-size:34px;color:var(--ink-900)}
.story-body p{margin-top:20px;font-size:16px;color:var(--ink-600);line-height:1.9}
.story-points{margin-top:30px;display:grid;gap:18px}
.story-points li{
  border-left:3px solid var(--amber-500);padding-left:16px;
}
.story-points h3{font-size:18px;color:var(--ink-900)}
.story-points p{margin-top:6px;font-size:14.5px;color:var(--ink-600);line-height:1.7}

/* feature grid */
.feature-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:28px}
.f-card{
  grid-column:span 6;
  background:#fff;border:1px solid var(--line-light);border-radius:var(--r-md);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.f-card:hover{transform:translateY(-4px);border-color:var(--amber-500);box-shadow:var(--shadow-light)}
.f-card--wide{grid-column:span 7}
.f-card--mid{grid-column:span 5}
.f-card--offset{margin-top:24px}
.f-card__media{aspect-ratio:16/10;overflow:hidden;background:var(--paper-2)}
.f-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.f-card:hover .f-card__media img{transform:scale(1.04)}
.f-card__body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.f-card__body h3{margin-top:14px;font-size:22px;color:var(--ink-900);line-height:1.4}
.f-card__body p{margin-top:10px;font-size:15px;line-height:1.75;color:var(--ink-600)}
.f-card__foot{
  margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;
  font-size:14px;color:var(--ink-400);
}
.arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--amber-500);
  font-weight:700;transition:transform .25s ease;
}
.f-card:hover .arrow{transform:translateX(4px)}

/* category strip */
.cat-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:28px}
.cat-card{
  grid-column:span 4;grid-column:span 4;
  background:#fff;border:1px solid var(--line-light);border-radius:var(--r-md);
  overflow:hidden;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.cat-card--lg{grid-column:span 5}
.cat-card--md{grid-column:span 4}
.cat-card--sm{grid-column:span 3}
.cat-card:hover{transform:translateY(-4px);border-color:var(--amber-500);box-shadow:var(--shadow-light)}
.cat-card__media{aspect-ratio:16/10;overflow:hidden}
.cat-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.cat-card:hover .cat-card__media img{transform:scale(1.04)}
.cat-card__body{padding:20px 22px 24px}
.cat-card__body h3{font-size:20px;color:var(--ink-900)}
.cat-card__body p{margin-top:10px;font-size:14.5px;line-height:1.7;color:var(--ink-600)}
.cat-card__link{margin-top:16px;display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--amber-500)}
.cat-card:hover .cat-card__link{transform:translateX(0)}
.cat-card__link i{font-style:normal;transition:transform .25s ease}
.cat-card:hover .cat-card__link i{transform:translateX(4px)}

/* news list */
.news-layout{display:grid;grid-template-columns:22% 78%;gap:40px;align-items:start}
.news-aside{position:sticky;top:96px}
.news-aside h2{font-size:30px;color:var(--ink-900)}
.news-aside p{margin-top:12px;font-size:15px;color:var(--ink-600)}
.text-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:16px;
  font-size:14px;font-weight:700;color:var(--amber-500);
}
.text-link i{font-style:normal;transition:transform .25s ease}
.text-link:hover i{transform:translateX(3px)}
.news-list{border-top:1px solid var(--line-light)}
.news-row{
  position:relative;padding:24px 20px 24px 22px;border-bottom:1px solid var(--line-light);
  transition:background .22s ease;
}
.news-row::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;
  background:var(--amber-500);opacity:0;transition:opacity .22s ease;
}
.news-row:hover{background:var(--paper-2)}
.news-row:hover::before{opacity:1}
.news-row__title{
  font-size:17px;font-weight:700;color:var(--ink-900);line-height:1.5;
  display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  transition:color .22s ease;
}
.news-row:hover .news-row__title{color:var(--night-700)}
.news-row__excerpt{
  margin-top:8px;font-size:15px;line-height:1.75;color:var(--ink-600);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-row__meta{
  margin-top:14px;display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  font-size:13px;color:var(--ink-400);
}
.news-row__more{font-size:13px;font-weight:700;color:var(--amber-500);margin-left:auto}
.empty-state{
  margin-top:24px;border:1px dashed var(--line-light);border-radius:var(--r-md);
  padding:48px 24px;text-align:center;
}
.empty-state p{font-size:14px;color:var(--ink-400);margin-bottom:16px}

/* proof */
.proof-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line-dark);border-bottom:1px solid var(--line-dark);
}
.proof-item{padding:36px 26px;border-right:1px solid var(--line-dark)}
.proof-item:last-child{border-right:0}
.proof-item b{display:block;font-size:34px;line-height:1.1;color:var(--amber-300)}
.proof-item span{display:block;margin-top:10px;font-size:13px;color:var(--muted-on-dark)}

/* faq */
.faq{max-width:900px;margin:0 auto;border-top:1px solid var(--line-light)}
.faq-item{border-bottom:1px solid var(--line-light)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:56px;padding:14px 0;text-align:left;
  font-size:16px;font-weight:700;color:var(--ink-900);
}
.faq-icon{
  position:relative;flex:0 0 18px;width:18px;height:18px;
  transition:transform .28s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink-400);transition:background .28s ease,opacity .28s ease;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-icon{transform:rotate(90deg)}
.faq-item.is-open .faq-icon::before,
.faq-item.is-open .faq-icon::after{background:var(--amber-500)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{display:none;padding:0 0 22px;font-size:15px;line-height:1.8;color:var(--ink-600);max-width:64em}
.faq-item.is-open .faq-a{display:block}

/* cta */
.cta-block{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:linear-gradient(140deg,var(--night-900),var(--night-700));
  border:1px solid var(--line-dark);
  padding:56px;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;
  color:var(--text-on-dark);
}
.cta-block::after{
  content:"";position:absolute;right:-60px;bottom:-60px;width:280px;height:280px;
  border:1px solid rgba(255,255,255,.14);border-radius:50%;
}
.cta-block h2{font-size:30px;color:var(--text-on-dark)}
.cta-block p{margin-top:12px;font-size:15px;color:var(--muted-on-dark);max-width:26em}
.cta-form{position:relative;z-index:1}
.cta-row{display:flex;gap:12px}
.cta-row input{
  flex:1;min-width:0;height:48px;padding:0 16px;border-radius:var(--r-sm);
  border:1px solid var(--line-dark);background:rgba(255,255,255,.06);
  color:var(--text-on-dark);font-size:15px;outline:none;
  transition:border-color .22s ease;
}
.cta-row input::placeholder{color:var(--muted-on-dark)}
.cta-row input:focus{border-color:var(--amber-500)}
.cta-row .btn{height:48px;padding:0 24px;white-space:nowrap}
.cta-hint{margin-top:12px;font-size:12px;color:var(--muted-on-dark)}
.cta-msg{margin-top:10px;font-size:13px;color:#FF9E93;display:none}
.cta-form.is-error input{border-color:var(--danger)}
.cta-form.is-error .cta-msg{display:block}
.cta-form.is-ok .cta-msg{display:block;color:#8FE6DB}

/* footer */
.site-footer{
  position:relative;background:var(--night-900);color:var(--muted-on-dark);
  padding-top:72px;overflow:hidden;
}
.footer-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:52px;border-bottom:1px solid var(--line-dark);
}
.footer-brand .logo{margin-bottom:18px}
.footer-brand p{font-size:14px;line-height:1.8;max-width:26em}
.footer-social{display:flex;gap:12px;margin-top:20px}
.footer-social a{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--line-dark);
  display:inline-flex;align-items:center;justify-content:center;font-size:13px;color:var(--muted-on-dark);
}
.footer-social a:hover{color:var(--amber-500);border-color:var(--amber-500)}
.footer-col h3{font-size:15px;color:var(--text-on-dark);margin-bottom:18px}
.footer-col a{display:block;font-size:14px;line-height:2.2;color:var(--muted-on-dark);transition:transform .2s ease,color .2s ease}
.footer-col a:hover{color:var(--text-on-dark);transform:translateX(2px)}
.footer-bottom{
  position:relative;z-index:1;
  display:flex;flex-wrap:wrap;gap:14px 28px;align-items:center;justify-content:space-between;
  padding:26px 0 34px;font-size:13px;
}
.footer-bottom a:hover{color:var(--text-on-dark)}
.footer-dust{
  position:absolute;left:0;right:0;bottom:0;height:120px;pointer-events:none;opacity:.10;
  background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:20px 20px;
}
.to-top{
  position:fixed;right:22px;bottom:24px;z-index:70;
  width:44px;height:44px;border-radius:50%;
  background:var(--night-900);border:1px solid var(--line-dark);color:var(--text-on-dark);
  display:inline-flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transition:opacity .3s ease,color .25s ease,border-color .25s ease,transform .25s ease;
}
.to-top.is-show{opacity:1;visibility:visible}
.to-top:hover{color:var(--amber-500);border-color:var(--amber-500);transform:translateY(-2px)}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container,.nav-inner{max-width:96%}
  .hero h1{font-size:42px}
}
@media (max-width:1023px){
  :root{--nav-h:60px}
  .nav-links,.nav-search{display:none}
  .nav-toggle{display:inline-flex}
  .nav-left{flex:1 1 auto}
  .nav-right{gap:10px}
  .hero-grid{grid-template-columns:1fr;gap:34px;padding:48px 0 44px}
  .hero h1{font-size:36px;max-width:none}
  .hero-media{aspect-ratio:16/9}
  .orbit-svg{display:none}
  .float-stat{left:16px;bottom:-18px}
  .story-grid{grid-template-columns:1fr;gap:32px}
  .story-media{min-height:320px}
  .f-card--wide,.f-card--mid,.f-card,.cat-card,.cat-card--lg,.cat-card--md,.cat-card--sm{grid-column:span 12}
  .f-card--offset{margin-top:0}
  .news-layout{grid-template-columns:1fr;gap:26px}
  .news-aside{position:static}
  .proof-strip{grid-template-columns:repeat(2,1fr)}
  .proof-item:nth-child(2){border-right:0}
  .proof-item:nth-child(1),.proof-item:nth-child(2){border-bottom:1px solid var(--line-dark)}
  .cta-block{grid-template-columns:1fr;padding:40px 32px;gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .section{padding:64px 0}
  .container,.nav-inner{padding:0 20px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:16px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .bridge-inner{padding:36px 0;gap:22px}
  .bridge-metrics{gap:26px}
  .section-head h2,.story-body h2,.news-aside h2,.cta-block h2{font-size:24px}
  .cta-row{flex-direction:column}
  .cta-row .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .proof-strip{grid-template-columns:1fr}
  .proof-item{border-right:0;border-bottom:1px solid var(--line-dark)}
  .proof-item:last-child{border-bottom:0}
  .news-row{padding:20px 14px 20px 18px}
  .news-row__title{white-space:normal}
  .news-row__more{margin-left:0}
}
@media (max-width:479px){
  .section{padding:48px 0}
  .hero-grid{padding:36px 0 34px}
  .hero-grid,.section .container{padding-left:20px;padding-right:20px}
  .f-card__body{padding:18px 18px 20px}
  .cta-block{padding:30px 22px}
  .hero::before,.footer-dust{display:none}
}

/* roulang page: article */
:root{
  --night-900:#150F2E;
  --night-800:#1E1740;
  --night-700:#2A2158;
  --amber-500:#F2A93B;
  --amber-300:#FFCE7A;
  --orbit-500:#2FB8A8;
  --paper:#F6F5FB;
  --paper-2:#EDE9F7;
  --ink-900:#1B1533;
  --ink-600:#5A5378;
  --ink-400:#8C86A8;
  --line-light:#E1DDF0;
  --line-dark:rgba(255,255,255,.10);
  --text-on-dark:#EDEAF7;
  --muted-on-dark:#A79FC7;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:10px;
  --r-pill:999px;
  --shadow-light:0 10px 30px rgba(21,15,46,.10);
  --shadow-dark:0 20px 60px rgba(0,0,0,.45);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-900);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none}
input,textarea{font:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.01em;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
time,.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--amber-500);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--night-900);
  border-bottom:1px solid var(--line-dark);
}
.nav-inner{
  max-width:var(--container);margin:0 auto;padding:0 24px;
  height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.nav-left{display:flex;align-items:center;gap:38px;min-width:0}
.nav-right{display:flex;align-items:center;gap:14px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{width:22px;height:22px;flex:none}
.logo-text{color:var(--text-on-dark);font-weight:700;font-size:18px;letter-spacing:.04em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{
  position:relative;display:inline-block;
  font-size:14px;color:var(--muted-on-dark);padding:6px 0;
  transition:color .25s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;width:60%;height:2px;
  background:var(--amber-500);transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-links a:hover,.nav-links a.is-active{color:var(--text-on-dark)}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1)}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:224px;height:36px;padding:0 12px;
  border:1px solid var(--line-dark);border-radius:var(--r-sm);
  background:rgba(255,255,255,.04);color:var(--muted-on-dark);
  transition:border-color .25s ease,color .25s ease;
}
.nav-search:focus-within{border-color:var(--amber-500);color:var(--amber-300)}
.nav-search input{
  flex:1;min-width:0;border:0;background:transparent;
  color:var(--text-on-dark);font-size:13px;outline:none;
}
.nav-search input::placeholder{color:var(--muted-on-dark)}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line-dark);
  border-radius:var(--r-sm);position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--text-on-dark);
  transform:translateX(-50%);transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle span{top:19px}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{transform:rotate(45deg);top:0}
.nav-toggle.is-open span::after{transform:rotate(-45deg);top:0}
.nav-mobile-extra{display:none}
.nav-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.55);
  opacity:0;visibility:hidden;transition:opacity .3s ease;z-index:65;
}
.nav-mask.is-open{opacity:1;visibility:visible}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border:1px solid transparent;border-radius:var(--r-sm);
  font-size:14px;font-weight:600;white-space:nowrap;
  transition:transform .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--amber-500);color:var(--night-900);box-shadow:0 8px 20px rgba(242,169,59,.22)}
.btn-primary:hover{background:var(--amber-300);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:transparent;border-color:var(--line-dark);color:var(--text-on-dark)}
.btn-ghost:hover{border-color:var(--amber-500);color:var(--amber-300)}
.btn-outline{background:#fff;border-color:var(--line-light);color:var(--ink-900)}
.btn-outline:hover{border-color:var(--amber-500);color:var(--night-700);transform:translateY(-1px)}
.btn-sm{height:36px;padding:0 16px;font-size:13px}
.btn-lg{height:48px;padding:0 26px;font-size:15px}

/* ---------- badges / tags ---------- */
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;
  border:1px solid rgba(47,184,168,.45);border-radius:var(--r-pill);
  background:rgba(47,184,168,.12);color:var(--orbit-500);
  font-size:13px;letter-spacing:.02em;
}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border:1px solid rgba(47,184,168,.45);border-radius:var(--r-pill);
  background:rgba(47,184,168,.12);color:var(--orbit-500);font-size:13px;
}
.tag-dark{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;
  border:1px solid var(--line-dark);border-radius:var(--r-pill);
  color:var(--muted-on-dark);font-size:13px;
}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;overflow:hidden;
  background-color:var(--night-900);
  background-image:linear-gradient(160deg,rgba(21,15,46,.90),rgba(30,23,64,.96)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  padding:34px 0 62px;
}
.article-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:radial-gradient(rgba(255,255,255,.13) 1px,transparent 1px);
  background-size:22px 22px;
}
.article-hero-inner{position:relative;z-index:1;max-width:820px;margin:0 auto}
.crumb-row{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:28px}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted-on-dark);flex-wrap:wrap}
.crumbs a{transition:color .2s ease}
.crumbs a:hover{color:var(--amber-300)}
.crumbs .sep{color:rgba(255,255,255,.28)}
.crumbs .current{color:rgba(237,234,247,.72)}
.back-link{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--muted-on-dark);
  transition:color .2s ease,transform .2s ease;white-space:nowrap;
}
.back-link:hover{color:var(--amber-300);transform:translateX(-3px)}
.article-hero h1{
  color:var(--text-on-dark);font-size:38px;line-height:1.28;
  margin:18px 0 20px;letter-spacing:.01em;word-break:break-word;
}
.meta-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--muted-on-dark)}
.meta-item{display:inline-flex;align-items:center;gap:6px}
.meta-item + .meta-item::before{
  content:"";display:inline-block;width:1px;height:12px;
  background:rgba(255,255,255,.22);margin-right:12px;
}

/* ---------- article body ---------- */
.article-main{padding:56px 0 24px}
.article-shell{max-width:820px;margin:0 auto}
.prose{font-size:17px;line-height:1.9;color:#2C2652}
.prose > *:first-child{margin-top:0}
.prose p{margin:0 0 22px}
.prose h2{
  font-size:26px;line-height:1.35;margin:40px 0 18px;
  padding-left:14px;border-left:4px solid var(--amber-500);color:var(--ink-900);
}
.prose h3{font-size:22px;line-height:1.4;margin:32px 0 14px;color:var(--ink-900)}
.prose h4{font-size:18px;line-height:1.5;margin:26px 0 12px;color:var(--ink-900)}
.prose ul{margin:0 0 22px;padding:0;list-style:none}
.prose ul li{position:relative;padding-left:18px;margin-bottom:6px}
.prose ul li::before{
  content:"";position:absolute;left:0;top:.78em;width:7px;height:7px;
  background:var(--orbit-500);border-radius:2px;
}
.prose ol{margin:0 0 22px;padding-left:24px;list-style:decimal}
.prose ol li{margin-bottom:6px}
.prose blockquote{
  margin:0 0 24px;padding:20px;
  border-left:3px solid var(--orbit-500);
  background:var(--paper-2);color:var(--ink-600);
  border-radius:0 var(--r-md) var(--r-md) 0;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{width:100%;border-radius:var(--r-md);margin:8px 0 12px}
.prose a{color:var(--night-700);text-decoration:underline;text-underline-offset:3px;transition:color .2s ease}
.prose a:hover{color:var(--amber-500)}
.prose table{width:100%;border-collapse:collapse;margin:0 0 24px;font-size:15px}
.prose th,.prose td{border:1px solid var(--line-light);padding:10px 12px;text-align:left}
.prose th{background:var(--paper-2);color:var(--ink-900)}
.prose hr{border:0;border-top:1px solid var(--line-light);margin:36px 0}
.prose figure{margin:0 0 24px}
.prose figcaption{font-size:13px;color:var(--ink-400);margin-top:8px}
.empty-state{
  border:1px dashed var(--line-light);border-radius:var(--r-md);
  padding:56px 24px;text-align:center;background:#fff;
}
.empty-state strong{display:block;font-size:18px;color:var(--ink-900);margin-bottom:10px}
.empty-state p{font-size:15px;color:var(--ink-600);margin-bottom:22px}

/* ---------- related ---------- */
.related{padding:64px 0 72px}
.section-head{max-width:640px;margin-bottom:32px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;color:var(--orbit-500);margin-bottom:12px;
}
.section-head .eyebrow::before{content:"";width:24px;height:1px;background:var(--orbit-500)}
.section-head h2{font-size:30px;line-height:1.32;margin-bottom:12px}
.section-head p{font-size:15px;color:var(--ink-600);line-height:1.75}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:#fff;border:1px solid var(--line-light);border-radius:var(--r-md);
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--amber-500);box-shadow:var(--shadow-light)}
.card-media{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--paper-2)}
.card-media img{width:100%;height:100%;transition:transform .5s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px;line-height:1.45}
.card-body p{font-size:14px;line-height:1.75;color:var(--ink-600);flex:1}
.card-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--night-700);transition:transform .25s ease,color .25s ease;
}
.card:hover .card-arrow{transform:translateX(4px);color:var(--amber-500)}
.card .badge{align-self:flex-start}

/* ---------- cta ---------- */
.cta{padding:0 0 88px}
.cta-box{
  position:relative;overflow:hidden;
  background:var(--night-900);border-radius:var(--r-lg);
  padding:56px;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;
  box-shadow:var(--shadow-dark);border:1px solid var(--line-dark);
}
.cta-box::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.12) 1px,transparent 1px);
  background-size:24px 24px;
}
.cta-copy{position:relative;z-index:1}
.cta-copy h2{font-size:28px;color:var(--text-on-dark);margin-bottom:12px;line-height:1.35}
.cta-copy p{font-size:15px;color:var(--muted-on-dark);line-height:1.8}
.cta-form{position:relative;z-index:1}
.field-row{display:flex;gap:12px}
.field-row input{
  flex:1;min-width:0;height:48px;padding:0 16px;
  background:rgba(255,255,255,.05);border:1px solid var(--line-dark);
  border-radius:var(--r-sm);color:var(--text-on-dark);font-size:14px;outline:none;
  transition:border-color .25s ease,background-color .25s ease;
}
.field-row input::placeholder{color:var(--muted-on-dark)}
.field-row input:focus{border-color:var(--amber-500);background:rgba(255,255,255,.08)}
.field-row input.is-error{border-color:#E4574C}
.form-note{font-size:12px;color:var(--muted-on-dark);margin-top:12px}
.form-msg{font-size:13px;margin-top:10px;display:none}
.form-msg.is-error{display:block;color:#F0847A}
.form-msg.is-ok{display:block;color:var(--orbit-500)}

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--night-900);color:var(--muted-on-dark);padding:64px 0 0;overflow:hidden}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px;padding-bottom:48px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;margin-bottom:10px;max-width:330px}
.footer-social{display:flex;gap:12px;margin-top:16px;flex-wrap:wrap}
.footer-social a{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;
  border:1px solid var(--line-dark);border-radius:var(--r-pill);
  font-size:13px;color:var(--muted-on-dark);transition:border-color .25s ease,color .25s ease;
}
.footer-social a:hover{border-color:var(--amber-500);color:var(--amber-300)}
.footer-col h3{font-size:15px;color:var(--text-on-dark);margin-bottom:16px}
.footer-col a{
  display:block;font-size:14px;line-height:2;color:var(--muted-on-dark);
  transition:color .2s ease,transform .2s ease;
}
.footer-col a:hover{color:var(--text-on-dark);transform:translateX(2px)}
.footer-bottom{
  position:relative;z-index:1;
  border-top:1px solid var(--line-dark);padding:20px 0 24px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;
}
.footer-bottom a{transition:color .2s ease}
.footer-bottom a:hover{color:var(--amber-300)}
.footer-dust{
  position:absolute;left:0;right:0;bottom:0;height:120px;pointer-events:none;opacity:.6;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:20px 20px;
}

/* ---------- float top ---------- */
.float-top{
  position:fixed;right:24px;bottom:24px;z-index:50;
  width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--night-800);border:1px solid var(--line-dark);color:var(--text-on-dark);
  opacity:0;visibility:hidden;transition:opacity .3s ease,background-color .25s ease,color .25s ease,transform .25s ease;
}
.float-top.is-visible{opacity:1;visibility:visible}
.float-top:hover{background:var(--amber-500);color:var(--night-900);border-color:var(--amber-500);transform:translateY(-2px)}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container,.nav-inner{padding:0 22px}
}
@media (max-width:1023px){
  .container,.nav-inner{width:96%;padding:0 18px}
  .nav-left{gap:24px}
  .nav-search{width:180px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:860px){
  .nav-inner{height:60px}
  .nav-links{
    position:fixed;top:0;right:0;z-index:70;
    width:min(328px,86vw);height:100vh;
    flex-direction:column;align-items:stretch;gap:0;
    padding:84px 24px 32px;
    background:var(--night-800);border-left:1px solid var(--line-dark);
    transform:translateX(102%);transition:transform .3s ease;
    overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-links a{width:100%;height:56px;line-height:56px;padding:0;font-size:16px;border-bottom:1px solid var(--line-dark)}
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:var(--amber-500)}
  .nav-search,.nav-cta{display:none}
  .nav-mobile-extra{display:block;padding-top:24px}
  .nav-mobile-extra .nav-search{display:flex;width:100%;margin-bottom:16px}
  .nav-mobile-extra .btn{display:inline-flex;width:100%}
  .nav-toggle{display:block}
  .article-hero{padding:26px 0 48px}
  .article-hero h1{font-size:30px}
  .article-hero-inner{max-width:100%}
  .article-main{padding:40px 0 16px}
  .prose{font-size:17px;line-height:1.85}
  .prose h2{font-size:23px;margin-top:34px}
  .prose h3{font-size:20px}
  .related{padding:48px 0 56px}
  .related-grid{grid-template-columns:1fr;gap:18px}
  .section-head h2{font-size:24px}
  .cta{padding:0 0 64px}
  .cta-box{grid-template-columns:1fr;gap:28px;padding:32px 24px}
  .cta-copy h2{font-size:23px}
  .field-row{flex-direction:column}
  .field-row .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .container,.nav-inner{padding:0 16px}
  .article-hero{padding:20px 0 40px}
  .article-hero h1{font-size:26px;margin:14px 0 16px}
  .crumb-row{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:20px}
  .related{padding:40px 0 48px}
  .cta-box{padding:26px 20px;border-radius:var(--r-md)}
  .float-top{right:16px;bottom:16px}
  .footer-dust{opacity:.35}
  .article-main{padding:32px 0 12px}
}

/* roulang page: category1 */
:root{
  --night-900:#150F2E;
  --night-800:#1E1740;
  --night-700:#2A2158;
  --amber-500:#F2A93B;
  --amber-300:#FFCE7A;
  --orbit-500:#2FB8A8;
  --paper:#F6F5FB;
  --paper-2:#EDE9F7;
  --ink-900:#1B1533;
  --ink-600:#5A5378;
  --ink-400:#8C86A8;
  --line-light:#E1DDF0;
  --text-on-dark:#EDEAF7;
  --muted-on-dark:#A79FC7;
  --line-dark:rgba(255,255,255,.10);
  --danger:#E4574C;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow-light:0 10px 30px rgba(21,15,46,.10);
  --shadow-dark:0 20px 60px rgba(0,0,0,.45);
  --container:1240px;
  --header-h:68px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-900);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.01em;line-height:1.32;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:var(--amber-300);color:var(--night-900);}
:focus-visible{outline:2px solid var(--amber-500);outline-offset:1px;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%;}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(21,15,46,.72);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{
  background:var(--night-900);
  border-bottom-color:var(--line-dark);
  box-shadow:0 10px 30px rgba(0,0,0,.28);
}
.nav-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  height:var(--header-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.nav-left{display:flex;align-items:center;gap:34px;flex:1 1 52%;min-width:0;}
.nav-right{display:flex;align-items:center;gap:14px;justify-content:flex-end;flex:0 1 48%;min-width:0;}
.logo{display:inline-flex;align-items:center;gap:9px;color:var(--text-on-dark);font-weight:700;letter-spacing:.04em;white-space:nowrap;}
.logo-mark{width:19px;height:19px;flex:none;}
.logo-text{font-size:18px;letter-spacing:.04em;}
.nav-links{display:flex;align-items:center;gap:26px;}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:14px;
  color:var(--muted-on-dark);
  transition:color .22s ease;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:60%;
  height:2px;
  background:var(--amber-500);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .25s ease;
}
.nav-links a:hover,.nav-links a:focus-visible{color:var(--text-on-dark);}
.nav-links a:hover::after,.nav-links a:focus-visible::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--amber-500);}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-search{
  display:flex;
  align-items:center;
  gap:7px;
  width:230px;
  height:36px;
  padding:0 13px;
  border:1px solid var(--line-dark);
  border-radius:var(--radius-pill);
  color:var(--muted-on-dark);
  transition:border-color .22s ease;
}
.nav-search:focus-within{border-color:var(--amber-500);}
.nav-search input{
  flex:1;
  min-width:0;
  border:0;
  background:transparent;
  outline:none;
  color:var(--text-on-dark);
  font-size:13px;
}
.nav-search input::placeholder{color:var(--muted-on-dark);}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:40px;
  padding:0 20px;
  border:1px solid transparent;
  border-radius:var(--radius-sm);
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  cursor:pointer;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .18s ease,box-shadow .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--amber-500);color:var(--night-900);}
.btn-primary:hover{background:var(--amber-300);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);box-shadow:inset 0 2px 6px rgba(21,15,46,.22);}
.btn-ghost{background:transparent;border-color:var(--line-dark);color:var(--text-on-dark);}
.btn-ghost:hover{border-color:var(--amber-500);color:var(--amber-500);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{height:36px;padding:0 16px;font-size:13px;}
.nav-toggle{
  display:none;
  position:relative;
  width:42px;
  height:42px;
  flex:none;
  border:1px solid var(--line-dark);
  border-radius:var(--radius-sm);
  background:transparent;
  cursor:pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:12px;
  width:18px;
  height:2px;
  background:var(--text-on-dark);
  border-radius:2px;
  transition:transform .25s ease,background .25s ease;
}
.nav-toggle span{top:19px;}
.nav-toggle span::before,.nav-toggle span::after{content:"";left:0;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
body.nav-open .nav-toggle span{background:transparent;}
body.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg);}
body.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg);}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  background:var(--night-900);
  color:var(--text-on-dark);
  padding:calc(var(--header-h) + 48px) 0 56px;
  min-height:300px;
  display:flex;
  align-items:center;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.5;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 92%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 92%);
  pointer-events:none;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-160px;
  top:-190px;
  width:520px;
  height:520px;
  border:1px solid rgba(242,169,59,.28);
  border-radius:50%;
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:860px;}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--muted-on-dark);
  margin-bottom:20px;
}
.breadcrumb a{color:var(--muted-on-dark);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--amber-500);}
.breadcrumb .sep{color:rgba(255,255,255,.28);}
.breadcrumb .current{color:var(--text-on-dark);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--orbit-500);
  margin-bottom:18px;
}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--orbit-500);}
.page-hero h1{
  font-size:44px;
  line-height:1.2;
  letter-spacing:.01em;
  margin-bottom:16px;
}
.page-hero h1 em{font-style:normal;color:var(--amber-500);}
.hero-sub{
  max-width:640px;
  font-size:16px;
  line-height:1.85;
  color:var(--muted-on-dark);
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag{
  display:inline-flex;
  align-items:center;
  height:28px;
  padding:0 13px;
  border:1px solid rgba(47,184,168,.55);
  background:rgba(47,184,168,.12);
  border-radius:var(--radius-pill);
  font-size:13px;
  color:var(--orbit-500);
  white-space:nowrap;
}

/* ---------- sections ---------- */
.section{padding:88px 0;}
.section-paper{background:var(--paper);}
.section-light{background:#fff;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head .kicker{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--orbit-500);
  margin-bottom:14px;
}
.section-head .kicker::before{content:"";width:22px;height:1px;background:var(--orbit-500);}
.section-head h2{font-size:34px;line-height:1.3;margin-bottom:14px;}
.section-head p{font-size:16px;line-height:1.85;color:var(--ink-600);}

/* ---------- two column layout ---------- */
.split{
  display:grid;
  grid-template-columns:minmax(200px,30%) 1fr;
  gap:48px;
  align-items:start;
}
.anchor-col{position:sticky;top:calc(var(--header-h) + 28px);}
.anchor-title{
  font-size:13px;
  letter-spacing:.1em;
  color:var(--ink-400);
  margin-bottom:16px;
}
.anchor-nav{display:flex;flex-direction:column;}
.anchor-nav a{
  padding:11px 0 11px 15px;
  border-left:2px solid var(--line-light);
  font-size:13px;
  line-height:1.6;
  color:var(--ink-600);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.anchor-nav a:hover{color:var(--ink-900);border-left-color:var(--amber-500);}
.anchor-nav a.is-current{color:var(--ink-900);font-weight:600;border-left-color:var(--amber-500);}
.anchor-note{
  margin-top:22px;
  padding:18px;
  background:#fff;
  border:1px solid var(--line-light);
  border-radius:var(--radius-md);
  font-size:13px;
  line-height:1.7;
  color:var(--ink-400);
}
.content-card{
  background:#fff;
  border:1px solid var(--line-light);
  border-radius:var(--radius-lg);
  padding:44px 48px;
  box-shadow:0 1px 2px rgba(21,15,46,.03);
}
.content-card h2{
  font-size:26px;
  line-height:1.35;
  padding-left:14px;
  border-left:4px solid var(--amber-500);
  margin-bottom:20px;
  scroll-margin-top:calc(var(--header-h) + 24px);
}
.content-card h3{
  font-size:19px;
  line-height:1.5;
  margin:30px 0 12px;
  color:var(--ink-900);
}
.content-card p{
  font-size:16px;
  line-height:1.9;
  color:var(--ink-600);
  margin-bottom:18px;
}
.content-card p strong{color:var(--ink-900);font-weight:600;}
.content-card h2 + p{margin-top:2px;}
.sep{height:1px;background:var(--line-light);border:0;margin:40px 0;}
.point-list{display:flex;flex-direction:column;gap:16px;margin:6px 0 22px;padding:0;}
.point-list li{
  position:relative;
  padding-left:18px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-600);
}
.point-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:11px;
  width:7px;
  height:7px;
  border-radius:2px;
  background:var(--orbit-500);
}
.point-list li b{color:var(--ink-900);font-weight:600;}
.step-list{counter-reset:step;display:flex;flex-direction:column;gap:14px;margin:8px 0 24px;}
.step-list li{
  position:relative;
  counter-increment:step;
  padding:16px 20px 16px 62px;
  background:var(--paper);
  border:1px solid var(--line-light);
  border-radius:var(--radius-md);
  font-size:15px;
  line-height:1.8;
  color:var(--ink-600);
}
.step-list li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;
  left:20px;
  top:15px;
  font-size:15px;
  font-weight:700;
  color:var(--amber-500);
}
.step-list li b{color:var(--ink-900);font-weight:600;}
figure{margin:26px 0;}
figure img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--radius-md);
  background:var(--paper-2);
}
figcaption{
  margin-top:12px;
  font-size:13px;
  line-height:1.7;
  color:var(--ink-400);
}
.timeline{margin:10px 0 24px;border-left:2px solid var(--line-light);padding-left:0;}
.timeline li{
  position:relative;
  padding:0 0 22px 24px;
}
.timeline li:last-child{padding-bottom:0;}
.timeline li::before{
  content:"";
  position:absolute;
  left:-7px;
  top:9px;
  width:12px;
  height:12px;
  border-radius:50%;
  background:var(--amber-500);
  box-shadow:0 0 0 4px rgba(242,169,59,.16);
}
.timeline .t-time{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  color:var(--amber-500);
  letter-spacing:.02em;
  margin-bottom:4px;
}
.timeline .t-title{display:block;font-size:16px;font-weight:600;color:var(--ink-900);margin-bottom:4px;}
.timeline .t-desc{display:block;font-size:15px;line-height:1.8;color:var(--ink-600);}

/* ---------- project rows ---------- */
.project-list{border-top:1px solid var(--line-light);}
.project-row{
  display:grid;
  grid-template-columns:150px 1fr auto;
  gap:26px;
  align-items:center;
  padding:24px 20px 24px 18px;
  border-bottom:1px solid var(--line-light);
  border-left:3px solid transparent;
  transition:background .22s ease,border-color .22s ease;
}
.project-row:hover{background:var(--paper);border-left-color:var(--amber-500);}
.project-row .p-name{font-size:17px;font-weight:600;color:var(--ink-900);}
.project-row .p-desc{font-size:15px;line-height:1.8;color:var(--ink-600);}
.project-row .p-tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border:1px solid rgba(47,184,168,.5);
  background:rgba(47,184,168,.1);
  border-radius:var(--radius-pill);
  font-size:13px;
  color:var(--orbit-500);
  white-space:nowrap;
}

/* ---------- entry cards ---------- */
.entry-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;}
.entry-card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--line-light);
  border-radius:var(--radius-md);
  overflow:hidden;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.entry-card:hover{transform:translateY(-4px);border-color:var(--amber-500);box-shadow:var(--shadow-light);}
.entry-card:hover .entry-arrow{transform:translateX(4px);}
.entry-media{overflow:hidden;background:var(--paper-2);}
.entry-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .5s ease;
}
.entry-card:hover .entry-media img{transform:scale(1.03);}
.entry-body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.entry-body h3{font-size:20px;line-height:1.4;}
.entry-body p{font-size:15px;line-height:1.8;color:var(--ink-600);}
.entry-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-top:6px;
  font-size:13px;
  color:var(--ink-400);
}
.entry-arrow{
  display:inline-flex;
  align-items:center;
  color:var(--amber-500);
  font-weight:700;
  transition:transform .25s ease;
}

/* ---------- CTA ---------- */
.cta-wrap{padding:0 0 88px;}
.cta{
  position:relative;
  overflow:hidden;
  background:var(--night-900);
  color:var(--text-on-dark);
  border:1px solid var(--line-dark);
  border-radius:var(--radius-lg);
  padding:56px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:44px;
  align-items:center;
  box-shadow:var(--shadow-dark);
}
.cta::before{
  content:"";
  position:absolute;
  right:-140px;
  bottom:-180px;
  width:420px;
  height:420px;
  border:1px solid rgba(242,169,59,.26);
  border-radius:50%;
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;}
.cta h2{font-size:30px;line-height:1.3;margin-bottom:14px;}
.cta p{font-size:15px;line-height:1.85;color:var(--muted-on-dark);}
.sub-form{position:relative;z-index:2;}
.form-row{display:flex;gap:12px;}
.form-row input{
  flex:1;
  min-width:0;
  height:48px;
  padding:0 16px;
  border:1px solid var(--line-dark);
  border-radius:var(--radius-sm);
  background:rgba(255,255,255,.04);
  color:var(--text-on-dark);
  font-size:14px;
  outline:none;
  transition:border-color .22s ease,background .22s ease;
}
.form-row input::placeholder{color:var(--muted-on-dark);}
.form-row input:focus{border-color:var(--amber-500);background:rgba(255,255,255,.07);}
.form-row input.is-error{border-color:var(--danger);}
.form-row .btn{height:48px;padding:0 24px;}
.form-msg{
  display:none;
  margin-top:12px;
  font-size:13px;
  line-height:1.7;
  color:var(--danger);
}
.form-msg.is-visible{display:block;}
.form-msg.is-ok{color:var(--orbit-500);}
.form-hint{margin-top:12px;font-size:12px;line-height:1.7;color:var(--muted-on-dark);}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  background:var(--night-900);
  color:var(--muted-on-dark);
  padding:72px 0 0;
  overflow:hidden;
}
.footer-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:52px;
}
.footer-brand .logo{margin-bottom:18px;}
.footer-brand p{font-size:14px;line-height:1.8;margin-bottom:12px;max-width:320px;}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-social a{
  display:inline-flex;
  align-items:center;
  height:30px;
  padding:0 14px;
  border:1px solid var(--line-dark);
  border-radius:var(--radius-pill);
  font-size:13px;
  color:var(--muted-on-dark);
  transition:color .22s ease,border-color .22s ease;
}
.footer-social a:hover{color:var(--amber-500);border-color:var(--amber-500);}
.footer-col h3{
  font-size:15px;
  color:var(--text-on-dark);
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-col a{
  display:block;
  font-size:14px;
  line-height:1.6;
  padding:6px 0;
  color:var(--muted-on-dark);
  transition:color .22s ease,transform .22s ease;
}
.footer-col a:hover{color:var(--text-on-dark);transform:translateX(2px);}
.footer-bottom{
  position:relative;
  z-index:2;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:22px 0 26px;
  border-top:1px solid var(--line-dark);
  font-size:13px;
  color:var(--muted-on-dark);
}
.footer-bottom a{color:var(--muted-on-dark);transition:color .2s ease;}
.footer-bottom a:hover{color:var(--amber-500);}
.footer-dust{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:120px;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:20px 20px;
  opacity:.4;
  pointer-events:none;
}

/* ---------- back top ---------- */
.back-top{
  position:fixed;
  right:24px;
  bottom:24px;
  width:44px;
  height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line-dark);
  border-radius:50%;
  background:var(--night-800);
  color:var(--text-on-dark);
  font-size:16px;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,background .22s ease,color .22s ease;
  z-index:90;
}
.back-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{background:var(--amber-500);color:var(--night-900);border-color:var(--amber-500);}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 28px;}
  .nav-inner{padding:0 28px;}
  .page-hero h1{font-size:40px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;width:96%;}
  .nav-inner{padding:0 24px;width:100%;}
  .nav-links{gap:20px;}
  .nav-search{width:180px;}
  .split{grid-template-columns:1fr;gap:32px;}
  .anchor-col{position:static;}
  .anchor-nav{flex-direction:row;flex-wrap:wrap;gap:8px;}
  .anchor-nav a{
    border-left:0;
    border:1px solid var(--line-light);
    border-radius:var(--radius-pill);
    padding:8px 16px;
    background:#fff;
  }
  .anchor-nav a.is-current{border-color:var(--amber-500);color:var(--night-700);}
  .anchor-note{display:none;}
  .content-card{padding:36px 30px;}
  .entry-grid{grid-template-columns:1fr;}
  .cta{grid-template-columns:1fr;gap:30px;padding:44px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .page-hero{padding:calc(var(--header-h) + 40px) 0 48px;}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.85;}
  .nav-links{
    position:fixed;
    top:0;
    right:0;
    bottom:0;
    width:min(340px,88vw);
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:84px 26px 170px;
    background:var(--night-800);
    border-left:1px solid var(--line-dark);
    transform:translateX(105%);
    transition:transform .34s ease;
    z-index:130;
    overflow-y:auto;
  }
  body.nav-open .nav-links{transform:translateX(0);}
  body.nav-open::before{
    content:"";
    position:fixed;
    inset:0;
    background:rgba(0,0,0,.55);
    z-index:110;
  }
  .nav-links a{
    width:100%;
    padding:16px 0;
    font-size:16px;
    border-bottom:1px solid var(--line-dark);
  }
  .nav-links a::after{display:none;}
  .nav-search,.nav-cta{display:none;}
  body.nav-open .nav-search{
    display:flex;
    position:fixed;
    right:26px;
    bottom:104px;
    width:calc(min(340px,88vw) - 52px);
    z-index:140;
    border-color:var(--line-dark);
    background:rgba(255,255,255,.04);
  }
  body.nav-open .nav-cta{
    display:inline-flex;
    position:fixed;
    right:26px;
    bottom:40px;
    width:calc(min(340px,88vw) - 52px);
    height:44px;
    z-index:140;
  }
  .nav-toggle{display:inline-block;}
  .logo-text{font-size:16px;}
  .page-hero h1{font-size:30px;}
  .hero-sub{font-size:15px;}
  .section{padding:64px 0;}
  .section-head h2{font-size:24px;}
  .content-card{padding:28px 20px;border-radius:var(--radius-md);}
  .content-card h2{font-size:22px;}
  .content-card h3{font-size:18px;}
  .content-card p{font-size:16px;line-height:1.85;}
  .step-list li{padding:14px 16px 14px 52px;}
  .step-list li::before{left:16px;top:13px;}
  .project-row{grid-template-columns:1fr;gap:10px;padding:20px 8px 20px 14px;}
  .cta{padding:32px 22px;border-radius:var(--radius-md);}
  .cta h2{font-size:24px;}
  .form-row{flex-direction:column;}
  .form-row .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .section-head{margin-bottom:32px;}
}
@media (max-width:480px){
  .container{padding:0 20px;width:100%;}
  .nav-inner{padding:0 20px;}
  .section{padding:52px 0;}
  .page-hero{padding:calc(var(--header-h) + 32px) 0 40px;}
  .page-hero h1{font-size:27px;}
  .back-top{right:16px;bottom:16px;}
}

/* roulang page: category2 */
:root{
  --night-900:#150F2E;
  --night-800:#1E1740;
  --night-700:#2A2158;
  --amber-500:#F2A93B;
  --amber-300:#FFCE7A;
  --orbit-500:#2FB8A8;
  --paper:#F6F5FB;
  --paper-2:#EDE9F7;
  --ink-900:#1B1533;
  --ink-600:#5A5378;
  --ink-400:#8C86A8;
  --line-light:#E1DDF0;
  --line-dark:rgba(255,255,255,.10);
  --text-on-dark:#EDEAF7;
  --muted-on-dark:#A79FC7;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-light:0 10px 30px rgba(21,15,46,.10);
  --shadow-dark:0 20px 60px rgba(0,0,0,.45);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-900);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.01em;line-height:1.3}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--amber-500);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:transparent;
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{background:var(--night-900);box-shadow:0 1px 0 rgba(255,255,255,.08)}
.nav-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.nav-left{display:flex;align-items:center;gap:34px;min-width:0}
.logo{display:inline-flex;align-items:center;gap:9px;color:var(--text-on-dark)}
.logo-mark{width:20px;height:20px;flex:none}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.04em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{position:relative;font-size:14px;color:var(--muted-on-dark);padding:6px 0;white-space:nowrap}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;width:60%;height:2px;
  background:var(--amber-500);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-links a:hover{color:var(--text-on-dark)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--amber-500)}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:14px;flex:none}
.nav-search{
  display:flex;align-items:center;gap:8px;width:224px;height:36px;padding:0 12px;
  border:1px solid var(--line-dark);border-radius:var(--radius-sm);
  color:var(--muted-on-dark);transition:border-color .2s ease;
}
.nav-search:focus-within{border-color:var(--amber-500)}
.nav-search input{flex:1;min-width:0;border:0;background:transparent;color:var(--text-on-dark);font-size:13px;outline:none}
.nav-search input::placeholder{color:var(--muted-on-dark)}
.nav-toggle{
  display:none;position:relative;width:40px;height:40px;border-radius:var(--radius-sm);
  border:1px solid var(--line-dark);
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:16px;height:2px;background:var(--text-on-dark);
  transform:translateX(-50%);transition:.25s;
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{content:"";top:-5px}
.nav-toggle span::after{content:"";top:5px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{top:0;transform:translateX(-50%) rotate(45deg)}
body.nav-open .nav-toggle span::after{top:0;transform:translateX(-50%) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:14px;font-weight:600;border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--amber-500);color:var(--night-900);box-shadow:0 6px 18px rgba(242,169,59,.22)}
.btn-primary:hover{background:var(--amber-300);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 2px 8px rgba(242,169,59,.20)}
.btn-ghost{background:transparent;border-color:var(--line-dark);color:var(--text-on-dark)}
.btn-ghost:hover{border-color:var(--amber-500);color:var(--amber-500)}
.btn-sm{height:36px;padding:0 16px;font-size:13px}

/* ---------- 分类页头 ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  color:var(--text-on-dark);
  background-color:var(--night-900);
  background-image:linear-gradient(160deg,var(--night-900) 0%,var(--night-800) 62%,var(--night-700) 100%);
  padding:132px 0 56px;
  margin-top:-68px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.26;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:26px 26px;opacity:.08;pointer-events:none;
}
.page-hero-inner{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted-on-dark);margin-bottom:22px}
.breadcrumb a:hover{color:var(--amber-300)}
.breadcrumb .sep{color:rgba(255,255,255,.28)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.08em;color:var(--orbit-500)}
.eyebrow::before{content:"";display:inline-block;width:24px;height:1px;background:var(--orbit-500)}
.page-hero h1{font-size:42px;line-height:1.2;margin:16px 0 18px;max-width:17em}
.hero-desc{font-size:17px;color:var(--muted-on-dark);max-width:640px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;
  border:1px solid rgba(47,184,168,.5);background:rgba(47,184,168,.12);color:#8FE4D8;font-size:13px;
}
.stat-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  margin-top:48px;padding-top:34px;border-top:1px solid var(--line-dark);
}
.stat{padding:0 28px;border-left:1px solid var(--line-dark)}
.stat:first-child{border-left:0;padding-left:0}
.stat-num{display:block;font-size:34px;font-weight:700;line-height:1.2;color:var(--amber-300);font-variant-numeric:tabular-nums}
.stat-label{display:block;margin-top:8px;font-size:13px;color:var(--muted-on-dark)}

/* ---------- 板块 ---------- */
.section{padding:88px 0}
.section-alt{background:var(--paper-2)}
.sec-head{max-width:680px;margin-bottom:44px}
.sec-title{font-size:34px;line-height:1.3}
.sec-title::before{
  content:"";display:block;width:4px;height:22px;border-radius:2px;
  background:var(--amber-500);margin-bottom:16px;
}
.sec-desc{margin-top:14px;font-size:15px;line-height:1.75;color:var(--ink-600)}

/* ---------- 序号轴 ---------- */
.timeline{position:relative;max-width:940px}
.timeline::before{
  content:"";position:absolute;left:5px;top:12px;bottom:12px;width:2px;background:var(--line-light);
}
.tl-item{position:relative;padding:0 0 46px 44px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:0;top:12px;width:12px;height:12px;border-radius:50%;
  background:var(--amber-500);box-shadow:0 0 0 4px rgba(242,169,59,.16);
}
.tl-head{display:flex;align-items:baseline;gap:16px;flex-wrap:wrap}
.tl-num{
  font-size:34px;font-weight:700;line-height:1;color:var(--paper-2);
  -webkit-text-stroke:1px #CDC6E6;font-variant-numeric:tabular-nums;
}
.tl-title{font-size:22px;line-height:1.4}
.tl-text{margin-top:10px;font-size:15px;line-height:1.75;color:var(--ink-600);max-width:660px}
.tl-text + .tl-text{margin-top:4px}
.tl-tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;margin-top:14px;
  border-radius:999px;border:1px solid rgba(47,184,168,.45);
  background:rgba(47,184,168,.10);color:#1F8C80;font-size:12px;
}

/* ---------- 图文区 ---------- */
.split{display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:center}
.split-media{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-light)}
.split-media img{width:100%;aspect-ratio:4/5;object-fit:cover;transition:transform .5s ease}
.split-media:hover img{transform:scale(1.03)}
.split-body h2{font-size:34px;line-height:1.3}
.split-body > p{margin-top:18px;font-size:16px;color:var(--ink-600)}
.point-list{margin-top:30px;display:grid;gap:18px}
.point{border-left:3px solid var(--amber-500);padding-left:16px}
.point h4{font-size:18px;line-height:1.5;margin-bottom:6px}
.point p{font-size:15px;line-height:1.75;color:var(--ink-600)}

/* ---------- 阅读场景 ---------- */
.scene-grid{display:grid;grid-template-columns:7fr 5fr;gap:28px;align-items:start}
.scene-card{
  background:#fff;border:1px solid var(--line-light);border-radius:var(--radius-md);
  padding:34px;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.scene-card:nth-child(2){margin-top:28px}
.scene-card:hover{transform:translateY(-4px);border-color:var(--amber-500);box-shadow:var(--shadow-light)}
.scene-card .tl-tag{margin-top:0;margin-bottom:16px}
.scene-card h3{font-size:22px;line-height:1.4;margin-bottom:12px}
.scene-card p{font-size:15px;line-height:1.75;color:var(--ink-600)}

/* ---------- 字段速查列表 ---------- */
.field-list{border-top:1px solid var(--line-light);max-width:960px}
.field-row{
  position:relative;display:grid;grid-template-columns:200px 1fr 120px;gap:24px;
  align-items:center;padding:22px 20px;border-bottom:1px solid var(--line-light);
  transition:background .25s ease;
}
.field-row::before{
  content:"";position:absolute;left:0;top:14%;bottom:14%;width:3px;border-radius:2px;
  background:var(--amber-500);opacity:0;transition:opacity .25s ease;
}
.field-row:hover{background:var(--paper-2)}
.field-row:hover::before{opacity:1}
.field-name{font-size:17px;font-weight:600}
.field-desc{font-size:15px;line-height:1.75;color:var(--ink-600)}
.field-link{font-size:14px;color:var(--night-700);text-align:right}
.field-link:hover{color:var(--amber-500)}

/* ---------- CTA ---------- */
.cta-wrap{padding:88px 0 96px}
.cta-block{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  padding:56px;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;
  background-color:var(--night-900);
  background-image:radial-gradient(circle at 18% 18%,rgba(47,184,168,.18),transparent 46%),linear-gradient(140deg,var(--night-900),var(--night-800));
  color:var(--text-on-dark);
}
.cta-block h2{font-size:30px;line-height:1.3}
.cta-block p{margin-top:12px;font-size:15px;line-height:1.75;color:var(--muted-on-dark)}
.cta-form{display:flex;gap:12px}
.cta-form input{
  flex:1;min-width:0;height:48px;padding:0 16px;border-radius:var(--radius-sm);
  border:1px solid var(--line-dark);background:rgba(255,255,255,.05);
  color:var(--text-on-dark);font-size:15px;transition:border-color .2s ease;
}
.cta-form input::placeholder{color:var(--muted-on-dark)}
.cta-form input:focus{outline:none;border-color:var(--amber-500)}
.cta-form .btn{height:48px}
.is-error .cta-form input{border-color:#E4574C}
.sub-note{margin-top:12px;font-size:12px;color:var(--muted-on-dark)}
.sub-note.is-error{color:#F08A82}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;overflow:hidden;background:var(--night-900);
  color:var(--muted-on-dark);padding:72px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{color:var(--text-on-dark)}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;max-width:340px}
.footer-social{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.footer-social a{
  display:inline-flex;align-items:center;justify-content:center;height:32px;padding:0 14px;
  border:1px solid var(--line-dark);border-radius:999px;font-size:13px;color:var(--muted-on-dark);
}
.footer-social a:hover{border-color:var(--amber-500);color:var(--amber-500)}
.footer-col h3{font-size:15px;color:var(--text-on-dark);margin-bottom:16px}
.footer-col a{display:block;font-size:14px;padding:6px 0;transition:transform .2s ease,color .2s ease}
.footer-col a:hover{color:var(--text-on-dark);transform:translateX(2px)}
.footer-bottom{
  position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:16px;align-items:center;
  justify-content:space-between;padding:22px 0;font-size:13px;border-top:1px solid var(--line-dark);
}
.footer-bottom a:hover{color:var(--amber-500)}
.footer-dust{
  position:absolute;left:0;right:0;bottom:0;height:120px;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:22px 22px;opacity:.08;
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;z-index:90;
  background:rgba(21,15,46,.92);border:1px solid var(--line-dark);color:var(--text-on-dark);
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease,background .2s ease,color .2s ease;
}
.to-top.is-show{opacity:1;visibility:visible}
.to-top:hover{background:var(--amber-500);border-color:var(--amber-500);color:var(--night-900)}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-links{gap:18px}
  .nav-search{display:none}
  .page-hero{padding:120px 0 48px;margin-top:-68px}
  .page-hero h1{font-size:34px}
  .split{grid-template-columns:1fr;gap:32px}
  .split-media img{aspect-ratio:16/10}
  .scene-grid{grid-template-columns:1fr;gap:20px}
  .scene-card:nth-child(2){margin-top:0}
  .cta-block{grid-template-columns:1fr;padding:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .nav-inner{height:60px;padding:0 18px}
  .nav-toggle{display:block;z-index:130}
  .nav-links{
    position:fixed;top:0;left:0;right:0;bottom:0;z-index:110;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--night-800);padding:104px 24px 200px;
    transform:translateX(100%);transition:transform .3s ease;overflow-y:auto;
  }
  body.nav-open .nav-links{transform:translateX(0)}
  .nav-links a{
    font-size:16px;line-height:56px;padding:0;color:var(--text-on-dark);
    border-bottom:1px solid var(--line-dark);
  }
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:var(--amber-500)}
  .nav-search{
    position:fixed;left:24px;right:24px;bottom:130px;top:auto;width:auto;height:44px;z-index:120;
    background:rgba(255,255,255,.04);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
  }
  .nav-cta{
    position:fixed;left:24px;right:24px;bottom:70px;height:46px;z-index:120;
    opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
  }
  body.nav-open .nav-search,
  body.nav-open .nav-cta{opacity:1;visibility:visible}
  body.nav-open .site-header{z-index:150;background:var(--night-800)}
  .container{padding:0 20px}
  .page-hero{padding:100px 0 44px;margin-top:-60px}
  .page-hero h1{font-size:30px}
  .hero-desc{font-size:16px;line-height:1.85}
  .stat-grid{grid-template-columns:1fr;margin-top:36px;padding-top:0;border-top:0}
  .stat{border-left:0;border-top:1px solid var(--line-dark);padding:18px 0}
  .stat:first-child{border-top:0;padding-top:0}
  .section{padding:56px 0}
  .sec-title{font-size:24px}
  .split-body h2{font-size:24px}
  .tl-item{padding:0 0 34px 34px}
  .tl-num{font-size:28px}
  .tl-title{font-size:19px}
  .field-row{grid-template-columns:1fr;gap:6px;padding:18px 14px}
  .field-link{text-align:left}
  .field-row::before{top:8%;bottom:8%}
  .cta-wrap{padding:56px 0 64px}
  .cta-block{padding:28px 20px;gap:24px}
  .cta-block h2{font-size:24px}
  .cta-form{flex-direction:column}
  .cta-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{justify-content:flex-start}
  .to-top{right:18px;bottom:20px}
}
@media (max-width:479px){
  .container{padding:0 18px}
  .section{padding:44px 0}
  .page-hero{padding:92px 0 40px}
  .page-hero h1{font-size:26px}
  .scene-card{padding:24px}
  .cta-wrap{padding:44px 0 52px}
  .footer-grid{padding-bottom:32px}
}

/* roulang page: category3 */
:root{
  --night-900:#150F2E;
  --night-800:#1E1740;
  --night-700:#2A2158;
  --amber-500:#F2A93B;
  --amber-300:#FFCE7A;
  --orbit-500:#2FB8A8;
  --paper:#F6F5FB;
  --paper-2:#EDE9F7;
  --ink-900:#1B1533;
  --ink-600:#5A5378;
  --ink-400:#8C86A8;
  --line-light:#E1DDF0;
  --text-on-dark:#EDEAF7;
  --muted-on-dark:#A79FC7;
  --line-dark:rgba(255,255,255,.10);
  --radius-lg:20px;
  --radius:14px;
  --radius-btn:10px;
  --shadow-light:0 10px 30px rgba(21,15,46,.10);
  --shadow-dark:0 20px 60px rgba(0,0,0,.45);
  --container:1240px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-900);
  background:var(--paper);
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--amber-500);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.01em;line-height:1.3}
p{margin:0}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease;
}
.site-header.is-scrolled{background:var(--night-900);border-bottom-color:var(--line-dark)}
.nav-inner{
  max-width:var(--container);margin:0 auto;padding:0 24px;
  height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.nav-left{display:flex;align-items:center;gap:34px;min-width:0}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text-on-dark);font-weight:700;font-size:17px;letter-spacing:.04em;white-space:nowrap}
.logo-mark{width:20px;height:20px;flex:none}
.nav-links{display:flex;align-items:center;gap:26px;font-size:14px}
.nav-links a{position:relative;color:var(--muted-on-dark);padding:6px 0;transition:color .22s ease}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--amber-500);transition:width .25s ease;
}
.nav-links a:hover{color:var(--text-on-dark)}
.nav-links a:hover::after{width:60%}
.nav-links a.is-active{color:var(--amber-500)}
.nav-links a.is-active::after{width:60%}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-search{
  display:flex;align-items:center;gap:8px;width:224px;height:36px;padding:0 14px;
  border:1px solid var(--line-dark);border-radius:999px;
  background:rgba(255,255,255,.05);color:var(--muted-on-dark);
  transition:border-color .22s ease;
}
.nav-search:focus-within{border-color:var(--amber-500)}
.nav-search input{
  width:100%;border:0;background:transparent;color:var(--text-on-dark);
  font-size:13px;outline:none;
}
.nav-search input::placeholder{color:var(--muted-on-dark)}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line-dark);
  border-radius:10px;background:transparent;cursor:pointer;
  align-items:center;justify-content:center;flex:none;
}
.nav-toggle span{position:relative;display:block;width:16px;height:2px;background:var(--text-on-dark);border-radius:2px;transition:background .2s ease}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--text-on-dark);border-radius:2px;
  transition:transform .25s ease;
}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{transform:translateY(5px) rotate(45deg)}
body.nav-open .nav-toggle span::after{transform:translateY(-5px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:var(--radius-btn);
  font-weight:600;cursor:pointer;text-align:center;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .18s ease,box-shadow .22s ease;
}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-lg{height:48px;padding:0 26px;font-size:16px}
.btn-primary{background:var(--amber-500);color:#1B1533}
.btn-primary:hover{background:var(--amber-300);transform:translateY(-1px);box-shadow:0 10px 24px rgba(242,169,59,.28)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:transparent;border-color:var(--line-dark);color:var(--text-on-dark)}
.btn-ghost:hover{border-color:var(--amber-500);color:var(--amber-300);background:rgba(255,255,255,.06)}
.btn-outline{background:#fff;border-color:var(--line-light);color:var(--ink-900)}
.btn-outline:hover{border-color:var(--amber-500);color:#B4761C;transform:translateY(-1px)}
.nav-cta{white-space:nowrap}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:calc(68px + 56px) 0 72px;
  color:var(--text-on-dark);
  background-image:
    radial-gradient(900px 460px at 82% 6%,rgba(47,184,168,.18),transparent 62%),
    linear-gradient(160deg,var(--night-900) 8%,var(--night-800) 58%,var(--night-700) 100%),
    url('/assets/images/backpic/back-1.webp');
  background-size:auto,auto,cover;
  background-position:center,center,center;
  background-blend-mode:normal,normal,overlay;
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.55) 1px,transparent 1.4px);
  background-size:26px 26px;opacity:.09;
}
.hero-orbit{
  position:absolute;right:-70px;top:50%;transform:translateY(-50%);
  width:430px;height:430px;opacity:.85;pointer-events:none;
}
.crumbs{position:relative;display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted-on-dark);margin-bottom:22px}
.crumbs a{transition:color .2s ease}
.crumbs a:hover{color:var(--amber-300)}
.crumbs .sep{opacity:.5}
.crumbs .current{color:var(--text-on-dark)}
.hero-inner{position:relative;max-width:820px}
.eyebrow{
  display:inline-flex;align-items:center;gap:12px;
  font-size:13px;color:var(--orbit-500);letter-spacing:.06em;margin-bottom:18px;
}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--orbit-500);display:block}
.page-hero h1{font-size:44px;line-height:1.2;margin-bottom:18px}
.page-hero .lead{font-size:17px;line-height:1.85;color:var(--muted-on-dark);max-width:660px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 13px;
  border-radius:999px;font-size:12.5px;letter-spacing:.02em;
  color:var(--orbit-500);border:1px solid rgba(47,184,168,.5);background:rgba(47,184,168,.12);
}
.tag.on-dark{color:#8FE2D7}

/* ---------- sections ---------- */
.section{padding:84px 0}
.section.alt{background:var(--paper-2)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:34px;margin-bottom:16px}
.section-head p{font-size:16px;color:var(--ink-600)}
.section-head .eyebrow{color:var(--orbit-500);margin-bottom:14px}

/* ---------- matrix cards ---------- */
.matrix{display:grid;grid-template-columns:repeat(12,1fr);gap:28px}
.m-span-7{grid-column:span 7}
.m-span-5{grid-column:span 5}
.tcard{
  display:flex;flex-direction:column;background:#fff;
  border:1px solid var(--line-light);border-radius:var(--radius);overflow:hidden;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.tcard:hover{transform:translateY(-4px);border-color:var(--amber-500);box-shadow:var(--shadow-light)}
.tcard-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--paper-2)}
.tcard-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.tcard:hover .tcard-media img{transform:scale(1.04)}
.tcard-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.tcard h3{font-size:21px}
.m-span-5 .tcard h3{font-size:19px}
.tcard p{font-size:15px;line-height:1.75;color:var(--ink-600)}
.tcard-link{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--night-700);padding-top:6px;
}
.tcard-link svg{transition:transform .25s ease}
.tcard:hover .tcard-link svg{transform:translateX(4px)}
.tcard:hover .tcard-link{color:#B4761C}

/* ---------- timeline ---------- */
.timeline{position:relative;margin-top:8px}
.timeline::before{content:"";position:absolute;left:5px;top:10px;bottom:10px;width:2px;background:var(--line-light)}
.tl-item{position:relative;padding-left:46px;padding-bottom:36px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:0;top:10px;width:12px;height:12px;border-radius:50%;
  background:var(--amber-500);box-shadow:0 0 0 4px rgba(242,169,59,.16);
}
.tl-head{display:flex;align-items:baseline;gap:16px;flex-wrap:wrap;margin-bottom:8px}
.tl-num{
  font-size:34px;font-weight:700;line-height:1;
  color:var(--paper-2);-webkit-text-stroke:1px #D8D2EC;
  font-variant-numeric:tabular-nums;
}
.tl-title{font-size:20px}
.tl-item p{font-size:15px;line-height:1.8;color:var(--ink-600);max-width:720px}

/* ---------- stats band ---------- */
.stats-band{
  position:relative;overflow:hidden;
  background:linear-gradient(140deg,var(--night-900),var(--night-800) 70%,var(--night-700));
  border-radius:var(--radius-lg);padding:52px 48px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:8px;
  box-shadow:var(--shadow-dark);
}
.stats-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1.4px);
  background-size:26px 26px;opacity:.08;
}
.stat{position:relative;padding:6px 24px}
.stat:first-child{padding-left:0}
.stat + .stat{border-left:1px solid var(--line-dark)}
.stat-num{
  display:block;font-size:34px;font-weight:700;color:var(--amber-300);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.stat-label{display:block;font-size:13px;color:var(--muted-on-dark);margin-top:8px}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line-light)}
.faq-item{border-bottom:1px solid var(--line-light)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:56px;padding:14px 0;background:none;border:0;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink-900);text-align:left;
  transition:color .22s ease;
}
.faq-q:hover{color:#B4761C}
.faq-icon{position:relative;width:16px;height:16px;flex:none}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink-400);border-radius:2px;
  transition:transform .28s ease,background .28s ease;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item.is-open .faq-icon::before{background:var(--amber-500)}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);background:var(--amber-500)}
.faq-a{max-height:0;overflow:hidden;opacity:0;transition:max-height .32s ease,opacity .3s ease}
.faq-item.is-open .faq-a{max-height:340px;opacity:1}
.faq-a p{font-size:15px;line-height:1.8;color:var(--ink-600);padding:0 0 22px;max-width:780px}

/* ---------- cta ---------- */
.cta-block{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background:linear-gradient(135deg,var(--night-800),var(--night-700));
  padding:56px;display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;
  box-shadow:var(--shadow-dark);
}
.cta-block::after{
  content:"";position:absolute;right:-120px;bottom:-160px;width:380px;height:380px;
  border:1px solid rgba(242,169,59,.28);border-radius:50%;pointer-events:none;
}
.cta-copy{position:relative;color:var(--text-on-dark)}
.cta-copy h2{font-size:30px;margin-bottom:14px}
.cta-copy p{font-size:15px;color:var(--muted-on-dark);max-width:460px}
.sub-form{position:relative;display:flex;gap:12px}
.sub-form input{
  flex:1;height:48px;padding:0 16px;border-radius:var(--radius-btn);
  border:1px solid var(--line-dark);background:rgba(255,255,255,.06);
  color:var(--text-on-dark);font-size:15px;outline:none;
  transition:border-color .22s ease;
}
.sub-form input::placeholder{color:var(--muted-on-dark)}
.sub-form input:focus{border-color:var(--amber-500)}
.sub-form .btn{height:48px;padding:0 24px;font-size:15px;white-space:nowrap}
.cta-note{position:relative;margin-top:14px;font-size:12.5px;color:var(--muted-on-dark)}
.cta-block.is-error .sub-form input{border-color:#E4574C}
.cta-block.is-error .cta-note{color:#F3A39B}

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--night-900);color:var(--muted-on-dark);padding-top:72px;overflow:hidden}
.footer-grid{
  display:grid;grid-template-columns:2.1fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:48px;border-bottom:1px solid var(--line-dark);
}
.footer-brand .logo{margin-bottom:18px}
.footer-brand p{font-size:14px;line-height:1.8;margin-bottom:10px;max-width:340px}
.footer-social{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap}
.footer-social a{
  font-size:13px;padding:6px 14px;border:1px solid var(--line-dark);
  border-radius:999px;transition:border-color .22s ease,color .22s ease;
}
.footer-social a:hover{border-color:var(--amber-500);color:var(--amber-300)}
.footer-col h3{font-size:15px;color:var(--text-on-dark);margin-bottom:16px;letter-spacing:.02em}
.footer-col a{display:block;font-size:14px;padding:6px 0;color:var(--muted-on-dark);transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:var(--text-on-dark);transform:translateX(2px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  padding:24px 0 28px;font-size:13px;
}
.footer-bottom a{transition:color .2s ease}
.footer-bottom a:hover{color:var(--amber-300)}
.footer-dust{
  height:120px;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1.4px);
  background-size:24px 24px;opacity:.08;
}

/* ---------- back to top ---------- */
.fab-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--night-800);color:var(--text-on-dark);border:1px solid var(--line-dark);
  display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:900;
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease,background .22s ease,color .22s ease;
}
.fab-top.is-visible{opacity:1;visibility:visible}
.fab-top:hover{background:var(--amber-500);color:#1B1533;border-color:var(--amber-500)}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 28px}
  .nav-inner{padding:0 28px}
}
@media (max-width:1023px){
  .matrix{grid-template-columns:1fr;gap:22px}
  .m-span-7,.m-span-5{grid-column:1/-1}
  .stats-band{grid-template-columns:repeat(2,1fr);gap:28px 0;padding:44px 36px}
  .stat:nth-child(3){border-left:0;padding-left:0}
  .cta-block{grid-template-columns:1fr;gap:30px;padding:44px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .footer-brand{grid-column:1/-1}
  .page-hero h1{font-size:36px}
  .hero-orbit{width:340px;height:340px;right:-110px;opacity:.6}
}
@media (max-width:900px){
  .nav-links{
    position:fixed;top:0;right:0;bottom:0;width:min(340px,88vw);
    background:var(--night-900);border-left:1px solid var(--line-dark);
    padding:88px 24px 170px;flex-direction:column;align-items:stretch;gap:0;
    transform:translateX(100%);transition:transform .32s ease;z-index:1250;
    overflow-y:auto;
  }
  body.nav-open .nav-links{transform:translateX(0)}
  .nav-links a{
    display:block;font-size:16px;line-height:56px;color:var(--text-on-dark);
    border-bottom:1px solid var(--line-dark);padding:0;
  }
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:var(--amber-500)}
  .nav-search,.nav-cta{display:none}
  .nav-toggle{display:flex}
  body.nav-open .nav-search{
    display:flex;position:fixed;right:24px;bottom:96px;
    width:min(292px,calc(88vw - 48px));z-index:1300;
    background:rgba(255,255,255,.07);
  }
  body.nav-open .nav-cta{
    display:inline-flex;position:fixed;right:24px;bottom:34px;
    width:min(292px,calc(88vw - 48px));height:46px;z-index:1300;
  }
  body.nav-open::after{
    content:"";position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:1200;
  }
}
@media (max-width:767px){
  .section{padding:56px 0}
  .page-hero{padding:calc(60px + 40px) 0 56px}
  .page-hero h1{font-size:30px}
  .page-hero .lead{font-size:16px}
  .section-head h2{font-size:24px}
  .stats-band{grid-template-columns:1fr;padding:36px 24px}
  .stat{padding:0 0 20px}
  .stat + .stat{border-left:0;border-top:1px solid var(--line-dark);padding-top:20px}
  .stat:last-child{padding-bottom:0}
  .cta-block{padding:32px 22px}
  .cta-copy h2{font-size:24px}
  .sub-form{flex-direction:column}
  .sub-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .tcard-body{padding:20px}
  .tl-num{font-size:28px}
  .hero-orbit{display:none}
}
@media (max-width:480px){
  .container{padding:0 20px}
  .nav-inner{padding:0 20px;height:60px}
  .section{padding:48px 0}
  .section-head{margin-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .fab-top{right:16px;bottom:16px}
}