/* roulang page: index */
:root{
  --bg-0:#060A18;
  --bg-1:#0B1226;
  --bg-2:#050813;
  --star:#2CE0C8;
  --star-deep:#17B3A0;
  --aurora:#4C6BFF;
  --meteor:#FFB03A;
  --tx-1:#E9EFFA;
  --tx-2:#A6B4CE;
  --tx-3:#6E7D99;
  --ok:#35D07F;
  --warn:#FF7A59;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--tx-1);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--star);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(44,224,200,.28);color:#fff;}

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

.section{padding:56px 0;position:relative;}
@media (min-width:768px){.section{padding:72px 0;}}
@media (min-width:1280px){.section{padding:96px 0;}}
.section-alt{background:var(--bg-1);}
.section-alt::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(233,239,250,.10) .8px,transparent .8px);
  background-size:26px 26px;
  opacity:.5;
  pointer-events:none;
}
.section > .container{position:relative;z-index:1;}

.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:34px;}
.sec-head h2{font-size:26px;line-height:1.3;font-weight:800;letter-spacing:.01em;}
@media (min-width:768px){.sec-head h2{font-size:30px;}}
.sec-head .sec-note{color:var(--tx-2);font-size:14px;margin-top:8px;max-width:660px;}
.sec-more{color:var(--star);font-size:14px;display:inline-flex;align-items:center;gap:6px;min-height:44px;font-weight:600;}
.sec-more:hover{color:var(--tx-1);}
.sec-more svg{transition:transform .22s var(--ease);}
.sec-more:hover svg{transform:translateX(4px);}

.pill{
  display:inline-flex;align-items:center;gap:8px;
  height:32px;padding:0 14px;border-radius:999px;
  background:rgba(44,224,200,.10);
  border:1px solid rgba(44,224,200,.28);
  color:var(--star);font-size:13px;font-weight:600;letter-spacing:.02em;
}
.pill-dot{width:6px;height:6px;border-radius:50%;background:var(--star);box-shadow:0 0 8px rgba(44,224,200,.8);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease),filter .24s var(--ease);
  white-space:nowrap;
}
.btn-gold{background:linear-gradient(180deg,#FFC163,#FFB03A);color:#0A0F1E;box-shadow:0 0 24px rgba(255,176,58,.30);}
.btn-gold:hover{filter:brightness(1.08);transform:translateY(-1px);}
.btn-ghost{border:1px solid var(--line-strong);background:rgba(255,255,255,.04);color:var(--tx-1);}
.btn-ghost:hover{border-color:var(--star);color:var(--star);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}

.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:rgba(44,224,200,.10);color:var(--star);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease),backdrop-filter .25s var(--ease);
}
.site-header.is-stuck{
  background:rgba(6,10,24,.80);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(44,224,200,.20);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:64px;}
@media (min-width:1024px){.nav-inner{height:72px;}}
.brand{display:flex;align-items:center;gap:10px;min-height:44px;flex:none;}
.brand-mark{width:30px;height:30px;flex:none;}
.brand-text{font-size:17px;font-weight:800;letter-spacing:.01em;white-space:nowrap;}
@media (min-width:1024px){.brand-text{font-size:19px;}}
.brand-text em{font-style:normal;background:linear-gradient(90deg,var(--star),var(--aurora));-webkit-background-clip:text;background-clip:text;color:transparent;}

.main-nav{display:none;}
@media (min-width:1024px){.main-nav{display:flex;align-items:center;gap:28px;}}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:72px;
  font-size:15px;color:var(--tx-2);padding:0 2px;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:2px;right:2px;bottom:20px;height:2px;border-radius:2px;
  background:var(--star);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--tx-1);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--star);background:rgba(44,224,200,.08);border-radius:999px;padding:0 14px;}
.nav-link.is-active::after{left:14px;right:14px;transform:scaleX(1);}

.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-actions .nav-cta-group{display:none;}
@media (min-width:1024px){.nav-actions .nav-cta-group{display:flex;align-items:center;gap:12px;}}
.nav-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.04);
}
@media (min-width:1024px){.nav-toggle{display:none;}}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--tx-1);border-radius:2px;position:relative;transition:background .2s var(--ease);}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--tx-1);border-radius:2px;
  transition:transform .24s var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg);}

.mobile-drawer{
  position:fixed;left:0;right:0;top:64px;bottom:0;z-index:45;
  background:rgba(6,10,24,.97);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  padding:18px 20px 32px;
  display:flex;flex-direction:column;gap:2px;
  opacity:0;transform:translateY(-10px);pointer-events:none;
  transition:opacity .24s var(--ease),transform .24s var(--ease);
  overflow-y:auto;
}
.mobile-drawer.is-open{opacity:1;transform:none;pointer-events:auto;}
.mobile-drawer a{
  display:flex;align-items:center;gap:12px;min-height:52px;
  font-size:16px;color:var(--tx-2);border-bottom:1px solid var(--line);
}
.mobile-drawer a.is-active{color:var(--star);}
.mobile-drawer .m-idx{font-size:12px;color:var(--tx-3);font-variant-numeric:tabular-nums;letter-spacing:.08em;}
.mobile-drawer .btn{margin-top:20px;}

/* ============ Hero ============ */
.hero{position:relative;padding:36px 0 56px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;top:-200px;left:50%;transform:translateX(-50%);
  width:min(1000px,140vw);height:520px;
  background:radial-gradient(closest-side,rgba(44,224,200,.16),rgba(76,107,255,.07) 58%,transparent 78%);
  pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr;gap:36px;align-items:center;}
@media (min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:48px;min-height:560px;}}
.hero-copy .pill{margin-bottom:20px;}
.hero h1{font-size:29px;line-height:1.25;font-weight:800;letter-spacing:.01em;}
@media (min-width:640px){.hero h1{font-size:34px;}}
@media (min-width:1024px){.hero h1{font-size:40px;}}
@media (min-width:1280px){.hero h1{font-size:44px;}}
.hero-sub{color:var(--tx-2);font-size:16px;line-height:1.8;margin-top:16px;max-width:540px;}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
@media (max-width:520px){
  .hero-btns{flex-direction:column;}
  .hero-btns .btn{width:100%;}
}
.trust-row{display:flex;flex-wrap:wrap;gap:14px 26px;margin-top:26px;font-size:13px;color:var(--tx-2);}
.trust-row li{display:flex;align-items:center;gap:7px;}
.trust-row svg{color:var(--star);flex:none;}

.hero-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:16/10;box-shadow:0 10px 30px rgba(0,0,0,.45);}
@media (min-width:1024px){.hero-visual{aspect-ratio:1/1;min-height:460px;}}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,24,.10) 0%,rgba(6,10,24,.70) 100%);
}
.hero-arc{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:2;}
.hero-badge{
  position:absolute;left:18px;bottom:18px;z-index:3;
  display:flex;align-items:baseline;gap:10px;
  padding:14px 18px;border-radius:var(--r-md);
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.hero-badge b{font-size:26px;font-weight:800;color:var(--star);font-variant-numeric:tabular-nums;line-height:1;}
.hero-badge span{font-size:12px;color:var(--tx-2);letter-spacing:.04em;}

/* ============ Stats strip ============ */
.stats-strip{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  display:grid;grid-template-columns:repeat(2,1fr);gap:1px;
  background:var(--line);
}
@media (min-width:768px){.stats-strip{grid-template-columns:repeat(4,1fr);}}
.stat-cell{background:var(--bg-0);padding:22px 20px;}
.stat-cell b{display:block;font-size:24px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--tx-1);line-height:1.2;}
.stat-cell span{display:block;font-size:13px;color:var(--tx-3);margin-top:6px;}

/* ============ Cards ============ */
.wide-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:1024px){.wide-grid{grid-template-columns:7fr 5fr;}}
.card{
  position:relative;border-radius:var(--r-lg);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
  padding:26px;
  transition:transform .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(44,224,200,.42);}
.card-icon{
  width:44px;height:44px;border-radius:12px;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:rgba(44,224,200,.10);color:var(--star);
  border:1px solid rgba(44,224,200,.24);
  transition:box-shadow .24s var(--ease);
}
.card:hover .card-icon{box-shadow:0 0 18px rgba(44,224,200,.28);}
.card h3{font-size:18px;font-weight:700;line-height:1.5;letter-spacing:.01em;}
@media (min-width:1024px){.card h3{font-size:19px;}}
.card p{font-size:14px;color:var(--tx-2);margin-top:10px;line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:13px;font-weight:600;color:var(--star);min-height:44px;}
.card-link:hover{color:var(--tx-1);}
.card-wide{display:flex;gap:20px;align-items:flex-start;padding:28px;}
.card-wide .card-body{min-width:0;}
.card-wide p{-webkit-line-clamp:2;}

.slim-grid{display:grid;grid-template-columns:1fr;gap:20px;margin-top:20px;}
@media (min-width:640px){.slim-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.slim-grid{grid-template-columns:repeat(3,1fr);}}
.slim-card{position:relative;border-radius:var(--r-md);padding:22px;background:rgba(255,255,255,.04);border:1px solid var(--line);transition:transform .24s var(--ease),border-color .24s var(--ease);}
.slim-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,var(--star),rgba(44,224,200,0));
}
.slim-card:hover{transform:translateY(-4px);border-color:rgba(44,224,200,.42);}
.slim-card h3{font-size:17px;font-weight:700;margin-top:16px;}
.slim-card p{font-size:14px;color:var(--tx-2);margin-top:8px;line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ============ Timeline ============ */
.timeline{position:relative;padding-left:34px;}
.timeline::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;width:1px;
  background:linear-gradient(180deg,rgba(44,224,200,.85),rgba(44,224,200,.06));
}
.tl-item{position:relative;padding-bottom:34px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-33px;top:6px;width:12px;height:12px;border-radius:50%;
  background:var(--star);box-shadow:0 0 0 4px rgba(44,224,200,.14),0 0 14px rgba(44,224,200,.6);
}
.tl-num{font-size:12px;letter-spacing:.16em;color:var(--star);font-weight:700;font-variant-numeric:tabular-nums;}
.tl-item h3{font-size:18px;font-weight:700;margin-top:6px;}
.tl-item p{font-size:14px;color:var(--tx-2);margin-top:8px;max-width:640px;line-height:1.85;}

/* ============ Case cards ============ */
.case-grid{display:grid;grid-template-columns:1fr;gap:22px;}
@media (min-width:1024px){.case-grid{grid-template-columns:repeat(2,1fr);}}
.case-card{display:flex;flex-direction:column;border-radius:var(--r-lg);overflow:hidden;background:rgba(255,255,255,.05);border:1px solid var(--line);box-shadow:0 10px 30px rgba(0,0,0,.35);transition:transform .24s var(--ease),border-color .24s var(--ease);}
.case-card:hover{transform:translateY(-4px);border-color:rgba(44,224,200,.42);}
@media (min-width:640px){.case-card{flex-direction:row;}}
.case-media{position:relative;flex:none;aspect-ratio:4/3;overflow:hidden;}
@media (min-width:640px){.case-media{width:44%;aspect-ratio:4/3;}}
.case-media img{width:100%;height:100%;object-fit:cover;}
.case-body{padding:24px;min-width:0;}
.case-body h3{font-size:18px;font-weight:700;}
.case-body p{font-size:14px;color:var(--tx-2);margin-top:10px;line-height:1.8;}
.case-metrics{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.metric{
  display:inline-flex;align-items:baseline;gap:6px;
  padding:7px 12px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  font-size:12px;color:var(--tx-2);
}
.metric b{color:var(--star);font-size:13px;font-variant-numeric:tabular-nums;}

/* ============ Plans ============ */
.plan-grid{display:grid;grid-template-columns:1fr;gap:22px;align-items:stretch;}
@media (min-width:1024px){.plan-grid{grid-template-columns:repeat(3,1fr);}}
.plan{
  position:relative;border-radius:var(--r-lg);padding:28px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
  display:flex;flex-direction:column;
  transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.plan:hover{transform:translateY(-4px);}
.plan-featured{border-color:rgba(44,224,200,.5);background:rgba(44,224,200,.06);}
@media (min-width:1024px){.plan-featured{margin-top:-8px;}}
.plan-flag{
  position:absolute;top:-12px;left:26px;
  height:24px;padding:0 12px;border-radius:999px;
  background:var(--star);color:#052029;font-size:12px;font-weight:700;
  display:inline-flex;align-items:center;letter-spacing:.04em;
}
.plan h3{font-size:18px;font-weight:700;}
.plan .plan-desc{font-size:13px;color:var(--tx-3);margin-top:8px;}
.plan-price{display:flex;align-items:baseline;gap:6px;margin-top:20px;}
.plan-price b{font-size:36px;font-weight:800;font-variant-numeric:tabular-nums;line-height:1;color:var(--tx-1);}
.plan-price span{font-size:13px;color:var(--tx-3);}
.plan ul{margin-top:20px;display:flex;flex-direction:column;gap:12px;flex:1;}
.plan li{display:flex;gap:10px;font-size:14px;color:var(--tx-2);line-height:1.6;}
.plan li svg{flex:none;color:var(--ok);margin-top:3px;}
.plan .btn{margin-top:24px;}

/* ============ CMS news ============ */
.news-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:640px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);}}
.news-card{
  display:flex;flex-direction:column;border-radius:var(--r-md);overflow:hidden;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
  transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(44,224,200,.42);}
@media (min-width:1024px){
  .news-card--lead{grid-column:span 2;flex-direction:row;}
  .news-card--lead .news-media{width:46%;aspect-ratio:auto;flex:none;}
}
.news-media{aspect-ratio:16/9;overflow:hidden;background:var(--bg-1);}
.news-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.news-card:hover .news-media img{transform:scale(1.03);}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1;min-width:0;}
.news-body h3{font-size:17px;font-weight:700;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body p{font-size:13px;color:var(--tx-2);margin-top:10px;line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;gap:12px;margin-top:14px;font-size:12px;color:var(--tx-3);}
.news-meta svg{color:var(--tx-3);}
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border-radius:var(--r-lg);border:1px dashed var(--line-strong);background:rgba(255,255,255,.02);
  text-align:center;padding:36px 20px;
}
.empty-state svg{color:var(--star);opacity:.8;}
.empty-state p{font-size:14px;color:var(--tx-2);}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{
  border-radius:var(--r-md);border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.faq-item.is-open{border-color:rgba(44,224,200,.42);background:rgba(44,224,200,.05);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;font-size:16px;font-weight:600;line-height:1.5;
}
@media (min-width:768px){.faq-q{font-size:17px;}}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line-strong);display:flex;align-items:center;justify-content:center;
  transition:transform .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease);
  color:var(--tx-2);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);border-color:var(--star);color:var(--star);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s var(--ease);
}
.faq-a-inner{
  padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--tx-2);
  border-top:1px solid var(--line);margin-top:2px;padding-top:16px;
}
.faq-item.is-open .faq-a{max-height:420px;}

/* ============ CTA band ============ */
.cta-band{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  padding:42px 28px;
  background:linear-gradient(135deg,rgba(44,224,200,.14),rgba(76,107,255,.10) 70%,rgba(255,255,255,.03));
  border:1px solid rgba(44,224,200,.26);
  display:grid;gap:24px;align-items:center;
}
@media (min-width:1024px){.cta-band{grid-template-columns:1fr auto;padding:52px 44px;}}
.cta-band h2{font-size:24px;font-weight:800;line-height:1.35;}
@media (min-width:768px){.cta-band h2{font-size:28px;}}
.cta-band p{font-size:14px;color:var(--tx-2);margin-top:10px;max-width:620px;}
.cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
@media (max-width:520px){.cta-band .cta-actions{flex-direction:column;}.cta-band .cta-actions .btn{width:100%;}}

/* ============ Footer ============ */
.site-footer{background:var(--bg-2);position:relative;margin-top:0;}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(44,224,200,.55),transparent);
}
.footer-top{display:grid;grid-template-columns:1fr;gap:36px;padding:52px 0 36px;}
@media (min-width:640px){.footer-top{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-top{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--tx-1);letter-spacing:.02em;margin-bottom:16px;}
.footer-col p,.footer-col li{font-size:13px;line-height:1.9;color:var(--tx-3);}
.footer-col a{color:var(--tx-3);display:inline-block;min-height:26px;}
.footer-col a:hover{color:var(--star);}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-social span{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--tx-2);
  transition:border-color .22s var(--ease),color .22s var(--ease);
}
.footer-social span:hover{border-color:var(--star);color:var(--star);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0;display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--tx-3);
}
.footer-bottom .fb-right{font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ============ Sticky mobile CTA ============ */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:40;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom,0px));
  background:rgba(6,10,24,.92);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-top:1px solid rgba(44,224,200,.22);
  display:flex;gap:10px;
}
.sticky-cta .btn{flex:1;height:46px;font-size:14px;}
@media (min-width:768px){.sticky-cta{display:none;}}
@media (max-width:767px){.site-footer{padding-bottom:76px;}}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --bg-0:#060A18;
  --bg-1:#0B1226;
  --bg-2:#050813;
  --star-cyan:#2CE0C8;
  --star-cyan-deep:#17B3A0;
  --aurora-indigo:#4C6BFF;
  --meteor-gold:#FFB03A;
  --tx-1:#E9EFFA;
  --tx-2:#A6B4CE;
  --tx-3:#6E7D99;
  --ok:#35D07F;
  --warn:#FF7A59;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-card:inset 0 0 0 1px rgba(255,255,255,.08), 0 10px 30px rgba(0,0,0,.35);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:230ms;
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--tx-1);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--star-cyan);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(44,224,200,.28);color:#fff;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#080D1C;}
::-webkit-scrollbar-thumb{background:#1B2740;border-radius:8px;border:2px solid #080D1C;}
::-webkit-scrollbar-thumb:hover{background:#27395C;}

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

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:transparent;
  transition:background var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(9,14,30,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(44,224,200,.18);
  box-shadow:0 12px 30px rgba(0,0,0,.35);
}
.header-inner{
  min-height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
@media (min-width:1024px){.header-inner{min-height:72px;}}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:30px;height:30px;flex:0 0 30px;}
.brand-text{font-size:18px;font-weight:800;letter-spacing:.01em;white-space:nowrap;}
.brand-text em{
  font-style:normal;
  background:linear-gradient(100deg,var(--star-cyan),var(--aurora-indigo));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
@media (min-width:1024px){.brand-text{font-size:19px;}}
.main-nav{display:none;align-items:center;gap:28px;}
@media (min-width:1024px){.main-nav{display:flex;}}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:44px;padding:0 12px;
  font-size:15px;color:var(--tx-2);
  border-radius:999px;
  transition:color var(--t) var(--ease),background var(--t) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;
  background:var(--star-cyan);border-radius:2px;
  transform:scaleX(0);transform-origin:left center;
  transition:transform var(--t) var(--ease);
}
.nav-link:hover{color:var(--tx-1);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{
  color:var(--star-cyan);
  background:rgba(44,224,200,.10);
}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:none;align-items:center;gap:14px;}
@media (min-width:1024px){.header-actions{display:flex;}}
.link-quiet{font-size:14px;color:var(--tx-2);transition:color var(--t) var(--ease);}
.link-quiet:hover{color:var(--star-cyan);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;
  border-radius:var(--r-sm);
  font-size:15px;font-weight:600;
  transition:transform var(--t) var(--ease),filter var(--t) var(--ease),background var(--t) var(--ease),border-color var(--t) var(--ease),color var(--t) var(--ease);
}
.btn-gold{
  background:var(--meteor-gold);color:#0A0F1E;
  box-shadow:0 0 24px rgba(255,176,58,.30);
}
.btn-gold:hover{filter:brightness(1.08);transform:translateY(-1px);}
.btn-ghost{
  background:rgba(255,255,255,.05);
  border:1px solid var(--line-strong);
  color:var(--tx-1);
}
.btn-ghost:hover{border-color:var(--star-cyan);color:var(--star-cyan);transform:translateY(-1px);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--line-strong);background:rgba(255,255,255,.04);
}
@media (min-width:1024px){.nav-toggle{display:none;}}
.nav-toggle span{display:block;width:18px;height:1.6px;background:var(--tx-1);position:relative;transition:transform var(--t) var(--ease);}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:1.6px;background:var(--tx-1);
  transition:transform var(--t) var(--ease),opacity var(--t) var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle.is-open span{transform:rotate(45deg);}
.nav-toggle.is-open span::before{transform:rotate(-90deg);top:0;}
.nav-toggle.is-open span::after{opacity:0;top:0;}
.drawer{
  position:fixed;inset:0;z-index:49;
  background:rgba(6,10,24,.94);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  padding:84px 20px 32px;
  display:flex;flex-direction:column;gap:4px;
  transform:translateY(-8px);opacity:0;pointer-events:none;
  transition:opacity var(--t) var(--ease),transform var(--t) var(--ease);
}
.drawer.is-open{opacity:1;transform:none;pointer-events:auto;}
@media (min-width:1024px){.drawer{display:none;}}
.drawer a.drawer-link{
  display:flex;align-items:center;gap:14px;
  min-height:52px;padding:0 12px;
  font-size:16px;color:var(--tx-2);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.drawer a.drawer-link .idx{font-size:12px;color:var(--star-cyan);font-variant-numeric:tabular-nums;}
.drawer a.drawer-link.is-active{color:var(--star-cyan);}
.drawer .btn{margin-top:20px;width:100%;}

/* ---------- page shell ---------- */
.page{padding-top:28px;}
.crumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--tx-3);
  padding:8px 0 24px;
}
.crumb a{color:var(--tx-2);transition:color var(--t) var(--ease);}
.crumb a:hover{color:var(--star-cyan);}
.crumb .sep{color:var(--star-cyan);font-size:11px;}
.crumb .crumb-current{
  color:var(--tx-3);
  max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
@media (min-width:768px){.crumb .crumb-current{max-width:460px;}}

/* ---------- article head ---------- */
.article-head{
  position:relative;
  padding:28px 0 34px;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.article-head::before{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;
  background:radial-gradient(circle at center,rgba(44,224,200,.14),transparent 68%);
  pointer-events:none;
}
.article-head .tag-cat{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:999px;
  background:rgba(44,224,200,.10);
  border:1px solid rgba(44,224,200,.28);
  color:var(--star-cyan);font-size:13px;font-weight:600;
}
.article-head h1{
  margin-top:18px;
  font-size:28px;line-height:1.3;font-weight:800;letter-spacing:.01em;
  max-width:900px;
}
@media (min-width:768px){.article-head h1{font-size:36px;}}
@media (min-width:1024px){.article-head h1{font-size:42px;line-height:1.25;}}
.article-meta{
  margin-top:18px;
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;
  font-size:13px;color:var(--tx-3);
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px;}
.article-meta svg{flex:0 0 auto;color:var(--star-cyan);opacity:.85;}

/* ---------- article body ---------- */
.article-layout{
  display:grid;grid-template-columns:1fr;gap:40px;
  padding:48px 0 8px;
}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:56px;}
}
.article-body{
  max-width:760px;
  font-size:17px;line-height:1.9;color:var(--tx-1);
}
.article-body p{margin:0 0 1.1em;}
.article-body h2{
  position:relative;
  margin:2.1em 0 .8em;
  font-size:24px;line-height:1.4;font-weight:800;color:var(--tx-1);
}
@media (min-width:768px){.article-body h2{font-size:27px;}}
.article-body h2::before{
  content:"";display:block;width:36px;height:3px;border-radius:3px;
  background:linear-gradient(90deg,var(--star-cyan),transparent);
  margin-bottom:12px;
}
.article-body h3{
  margin:1.7em 0 .6em;
  font-size:19px;font-weight:600;color:var(--tx-1);
}
.article-body a{
  color:var(--star-cyan);
  text-decoration:underline;
  text-underline-offset:4px;
  text-decoration-thickness:1px;
  transition:color var(--t) var(--ease);
}
.article-body a:hover{color:var(--tx-1);}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:4px;}
.article-body li{position:relative;padding-left:22px;margin-bottom:.6em;color:var(--tx-2);}
.article-body li::before{
  content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:50%;
  background:var(--star-cyan);box-shadow:0 0 8px rgba(44,224,200,.55);
}
.article-body ol{counter-reset:num;}
.article-body ol li{padding-left:30px;}
.article-body ol li::before{
  content:counter(num);counter-increment:num;
  top:.15em;left:0;width:auto;height:auto;background:none;box-shadow:none;
  color:var(--star-cyan);font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:1.6em 0;
  padding:18px 22px;
  background:rgba(255,255,255,.05);
  border-left:3px solid var(--star-cyan);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--tx-2);
  font-size:16px;line-height:1.85;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  width:100%;height:auto;border-radius:var(--r-md);
  margin:1.8em auto;
  background:var(--bg-1);
}
.article-body figure{margin:1.8em 0;}
.article-body figure img{margin:0 auto;}
.article-body figcaption{
  margin-top:10px;text-align:center;
  font-size:13px;color:var(--tx-3);
}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.8em 0;
  font-size:15px;border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--line);
}
.article-body th,.article-body td{
  padding:12px 16px;text-align:left;
  border-bottom:1px solid var(--line);
}
.article-body th{background:rgba(44,224,200,.08);color:var(--star-cyan);font-weight:600;}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.03);}
.article-body tbody tr:last-child td{border-bottom:0;}
.article-body strong{color:var(--tx-1);font-weight:700;}
.article-body hr{border:0;height:1px;background:var(--line);margin:2.4em 0;}

/* side panel */
.side-panel{display:flex;flex-direction:column;gap:18px;}
@media (max-width:1023px){.side-panel{order:-1;}}
.side-card{
  background:rgba(255,255,255,.05);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
  padding:22px;
}
.side-card h3{font-size:16px;font-weight:700;margin-bottom:14px;}
.side-list li+li{margin-top:12px;border-top:1px solid rgba(255,255,255,.06);padding-top:12px;}
.side-list a{font-size:14px;color:var(--tx-2);transition:color var(--t) var(--ease);}
.side-list a:hover{color:var(--star-cyan);}
.side-note{font-size:13px;color:var(--tx-3);line-height:1.8;}

/* ---------- tags & share ---------- */
.article-foot{
  margin-top:48px;padding-top:26px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:18px;align-items:center;justify-content:space-between;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;
  border-radius:999px;font-size:13px;color:var(--tx-2);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  transition:color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.tag:hover{color:var(--star-cyan);border-color:rgba(44,224,200,.5);}
.share-row{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--tx-3);}
.share-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--line-strong);background:rgba(255,255,255,.04);
  color:var(--tx-2);
  transition:color var(--t) var(--ease),border-color var(--t) var(--ease),transform var(--t) var(--ease);
}
.share-btn:hover{color:var(--star-cyan);border-color:var(--star-cyan);transform:translateY(-2px);}

/* ---------- related ---------- */
.related{padding:var(--sec) 0 0;}
.section-head{
  display:flex;flex-wrap:wrap;gap:14px;align-items:flex-end;justify-content:space-between;
  margin-bottom:32px;
}
.section-head h2{font-size:24px;font-weight:800;}
@media (min-width:768px){.section-head h2{font-size:28px;}}
.section-head p{font-size:14px;color:var(--tx-3);margin-top:8px;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--star-cyan);font-size:14px;font-weight:600;
  transition:gap var(--t) var(--ease);
}
.text-link:hover{gap:10px;}
.card-grid{display:grid;grid-template-columns:1fr;gap:22px;}
@media (min-width:640px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.card{
  display:flex;flex-direction:column;
  background:rgba(255,255,255,.05);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:inset 0 0 0 1px rgba(44,224,200,.5),0 16px 34px rgba(0,0,0,.45);}
.card-media{
  position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-1);
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.card:hover .card-media img{transform:scale(1.04);}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{
  font-size:18px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-body p{
  font-size:14px;color:var(--tx-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{margin-top:auto;display:flex;align-items:center;gap:8px;font-size:12px;color:var(--tx-3);}
.card-meta svg{color:var(--star-cyan);opacity:.85;}
.pill{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;font-size:12px;
  background:rgba(44,224,200,.10);color:var(--star-cyan);
}

/* ---------- back & empty ---------- */
.back-row{padding:40px 0 var(--sec);display:flex;justify-content:center;}
.empty-state{
  padding:56px 28px;text-align:center;
  background:rgba(255,255,255,.04);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
}
.empty-state h2{font-size:22px;font-weight:800;margin-bottom:12px;}
.empty-state p{font-size:15px;color:var(--tx-2);max-width:520px;margin:0 auto 22px;}
.empty-mark{width:64px;height:64px;margin:0 auto 18px;color:var(--star-cyan);}

/* ---------- footer ---------- */
.site-footer{
  margin-top:var(--sec);
  background:var(--bg-2);
  border-top:1px solid rgba(44,224,200,.16);
}
.footer-top{
  display:grid;grid-template-columns:1fr;gap:36px;
  padding:64px 0 44px;
}
@media (min-width:640px){.footer-top{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.footer-top{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:44px;}}
.footer-col h4{font-size:14px;font-weight:700;color:var(--tx-1);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul{
  font-size:13.5px;line-height:1.9;color:var(--tx-2);
}
.footer-col ul a{color:var(--tx-2);transition:color var(--t) var(--ease);}
.footer-col ul a:hover{color:var(--star-cyan);}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{font-size:17px;}
.footer-col p{font-size:13.5px;line-height:1.9;color:var(--tx-3);max-width:340px;}
.footer-social{display:flex;gap:12px;margin-top:18px;}
.footer-social span{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:var(--r-sm);
  border:1px solid var(--line);color:var(--tx-2);
  transition:color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.footer-social span:hover{color:var(--star-cyan);border-color:var(--star-cyan);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--tx-3);
}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --bg-0:#060A18;
  --bg-1:#0B1226;
  --bg-2:#050813;
  --star:#2CE0C8;
  --star-deep:#17B3A0;
  --aurora:#4C6BFF;
  --gold:#FFB03A;
  --tx-1:#E9EFFA;
  --tx-2:#A6B4CE;
  --tx-3:#6E7D99;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec:96px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--tx-1);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(circle at 12% 8%, rgba(44,224,200,.08), transparent 42%),
    radial-gradient(circle at 88% 2%, rgba(76,107,255,.08), transparent 40%),
    radial-gradient(rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:auto,auto,120px 120px;
  opacity:.85;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--star);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1}
@media (min-width:768px){.container{padding:0 32px}}
.section{padding:56px 0}
@media (min-width:768px){.section{padding:72px 0}}
@media (min-width:1024px){.section{padding:var(--sec) 0}}
.num{font-variant-numeric:tabular-nums}

/* ============ HEADER ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  height:64px;
  border-bottom:1px solid transparent;
  transition:background .22s var(--ease),border-color .22s var(--ease),backdrop-filter .22s var(--ease);
}
@media (min-width:1024px){.site-header{height:72px}}
.site-header.is-scrolled{
  background:rgba(6,10,24,.74);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(44,224,200,.20);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:100%}
.brand{display:inline-flex;align-items:center;gap:10px;min-height:44px}
.brand-mark{width:30px;height:30px;flex:0 0 auto}
.brand-text{font-size:18px;font-weight:800;letter-spacing:.01em;white-space:nowrap}
@media (min-width:1024px){.brand-text{font-size:19px}}
.brand-text em{
  font-style:normal;
  background:linear-gradient(92deg,var(--star),var(--aurora));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.main-nav{display:none;align-items:center;gap:28px}
@media (min-width:1024px){.main-nav{display:flex}}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:44px;padding:0 2px;
  font-size:15px;color:var(--tx-2);
  transition:color .22s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:6px;height:2px;
  background:var(--star);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--tx-1)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{
  color:var(--star);
  padding:0 14px;
  background:rgba(44,224,200,.09);
  border-radius:999px;
}
.nav-link.is-active::after{left:14px;right:14px;bottom:9px;transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:14px}
.header-cta{display:none}
@media (min-width:1024px){.header-cta{display:inline-flex}}
.burger{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 10px;border-radius:var(--r-sm);
  border:1px solid var(--line-strong);
  transition:border-color .22s var(--ease)
}
@media (min-width:1024px){.burger{display:none}}
.burger:hover{border-color:var(--star)}
.burger span{display:block;height:2px;background:var(--tx-1);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ DRAWER ============ */
.drawer{
  position:fixed;inset:0;z-index:80;
  background:rgba(5,8,19,.92);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  padding:24px 20px 32px;
  display:flex;flex-direction:column;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px}
.drawer-nav{margin-top:18px;display:flex;flex-direction:column}
.drawer-link{
  display:flex;align-items:center;gap:14px;
  min-height:52px;padding:0 4px;
  border-bottom:1px solid var(--line);
  color:var(--tx-2);font-size:17px;font-weight:600;
  transition:color .2s var(--ease),padding-left .2s var(--ease)
}
.drawer-link span{font-size:12px;color:var(--tx-3);font-weight:500}
.drawer-link:hover{color:var(--tx-1);padding-left:10px}
.drawer-link.is-active{color:var(--star)}
.drawer-cta{margin-top:auto;display:block}
.drawer-cta .btn{width:100%;justify-content:center}

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;
  border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .22s var(--ease),filter .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease),background .22s var(--ease);
}
.btn-gold{
  background:linear-gradient(180deg,#FFC463,#FFB03A);
  color:#0A0F1E;
  box-shadow:0 0 24px rgba(255,176,58,.30);
}
.btn-gold:hover{transform:translateY(-1px);filter:brightness(1.08)}
.btn-ghost{
  background:rgba(255,255,255,.05);
  border:1px solid var(--line-strong);
  color:var(--tx-1);
}
.btn-ghost:hover{border-color:var(--star);color:var(--star)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn:active{transform:translateY(1px)}

/* ============ HERO ============ */
.page-hero{
  position:relative;
  padding:28px 0 40px;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
@media (min-width:1024px){.page-hero{padding:34px 0 46px}}
.page-hero::after{
  content:"";
  position:absolute;left:0;right:0;top:-1px;height:220px;
  background:radial-gradient(ellipse at 22% 0%, rgba(44,224,200,.16), transparent 62%);
  pointer-events:none;
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--tx-3);position:relative;z-index:1}
.crumbs a{color:var(--tx-2);transition:color .2s var(--ease)}
.crumbs a:hover{color:var(--star)}
.crumbs .sep{color:var(--star);font-size:11px}
.hero-grid{
  position:relative;z-index:1;
  margin-top:18px;
  display:grid;gap:26px;
  grid-template-columns:1fr;
  align-items:center;
}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:1.55fr 1fr;gap:40px;min-height:270px}
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:999px;
  background:rgba(44,224,200,.10);
  border:1px solid rgba(44,224,200,.28);
  color:var(--star);font-size:12.5px;font-weight:600;letter-spacing:.04em;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--star);box-shadow:0 0 10px var(--star)}
h1{
  margin-top:16px;
  font-size:29px;line-height:1.3;font-weight:800;letter-spacing:.01em;
}
@media (min-width:768px){h1{font-size:36px}}
@media (min-width:1024px){h1{font-size:42px;line-height:1.25}}
.hero-lead{margin-top:14px;font-size:15.5px;color:var(--tx-2);max-width:640px}
.hero-actions{margin-top:22px;display:flex;flex-wrap:wrap;gap:12px}
.hero-figure{
  position:relative;
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
  aspect-ratio:16/9;
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,24,.12),rgba(6,10,24,.66));
}
.hero-badge{
  position:absolute;left:14px;bottom:14px;z-index:2;
  display:flex;align-items:center;gap:10px;
  padding:10px 14px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.hero-badge b{font-size:20px;font-weight:800;color:var(--star);font-variant-numeric:tabular-nums}
.hero-badge span{font-size:12px;color:var(--tx-2)}

/* ============ CHIPS ============ */
.chip-bar{
  display:flex;flex-wrap:wrap;gap:10px;
  padding:18px 0 4px;
}
.chip{
  display:inline-flex;align-items:center;
  min-height:38px;padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line-strong);
  background:rgba(255,255,255,.04);
  color:var(--tx-2);font-size:14px;
  transition:all .22s var(--ease);
}
.chip:hover{color:var(--tx-1);border-color:rgba(44,224,200,.5)}
.chip.is-active{
  background:var(--star);border-color:var(--star);color:#06201C;font-weight:600;
}

/* ============ SECTION TITLE ============ */
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px}
h2{font-size:25px;line-height:1.35;font-weight:700}
@media (min-width:768px){h2{font-size:28px}}
.sec-head p{margin-top:8px;font-size:14.5px;color:var(--tx-2);max-width:680px}
.sec-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--star);transition:opacity .2s var(--ease)}
.sec-link:hover{opacity:.78}

/* ============ ENTRY GRID ============ */
.entry-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media (min-width:640px){.entry-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.entry-grid{grid-template-columns:repeat(6,1fr)}}
.entry{
  position:relative;
  padding:22px;
  border-radius:var(--r-md);
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.022));
  border:1px solid var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
  display:flex;flex-direction:column;
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.entry::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  border-radius:var(--r-md) var(--r-md) 0 0;
  background:linear-gradient(90deg,var(--star),rgba(44,224,200,0));
  opacity:.75;
}
.entry:hover{transform:translateY(-4px);border-color:rgba(44,224,200,.45);box-shadow:0 16px 36px rgba(0,0,0,.42)}
.entry:hover .entry-ico{box-shadow:0 0 22px rgba(44,224,200,.22);border-color:rgba(44,224,200,.4)}
.entry-ico{
  width:44px;height:44px;border-radius:var(--r-sm);
  display:flex;align-items:center;justify-content:center;
  background:rgba(44,224,200,.08);
  border:1px solid rgba(44,224,200,.22);
  transition:box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.entry-ico svg{width:22px;height:22px;stroke:var(--star);fill:none;stroke-width:1.5}
.entry h3{margin-top:16px;font-size:18px;font-weight:600;line-height:1.45}
.entry p{margin-top:8px;font-size:14px;color:var(--tx-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.entry-more{
  margin-top:auto;padding-top:16px;
  display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;color:var(--star);
}
.entry-more svg{width:14px;height:14px;stroke:var(--star);fill:none;stroke-width:1.8;transition:transform .22s var(--ease)}
.entry:hover .entry-more svg{transform:translateX(4px)}
@media (min-width:1024px){
  .entry.span-4{grid-column:span 4}
  .entry.span-2{grid-column:span 2}
}
.entry-meta{margin-top:10px;display:flex;flex-wrap:wrap;gap:8px}
.pill{
  display:inline-flex;align-items:center;
  height:24px;padding:0 10px;border-radius:999px;
  background:rgba(44,224,200,.10);color:var(--star);
  font-size:12px;letter-spacing:.02em;
}
.pill-mute{background:rgba(255,255,255,.06);color:var(--tx-2)}

/* ============ STAT BAR ============ */
.stat-band{
  display:grid;gap:1px;
  grid-template-columns:1fr;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--line);
}
@media (min-width:640px){.stat-band{grid-template-columns:repeat(3,1fr)}}
.stat-cell{
  background:var(--bg-1);
  padding:26px 24px;
  display:flex;flex-direction:column;gap:6px;
}
.stat-cell b{font-size:32px;font-weight:800;color:var(--tx-1);line-height:1.1;font-variant-numeric:tabular-nums}
.stat-cell b em{font-style:normal;font-size:15px;font-weight:600;color:var(--star);margin-left:6px}
.stat-cell span{font-size:13.5px;color:var(--tx-2)}
.stat-cell small{font-size:12.5px;color:var(--tx-3)}

/* ============ FAQ ============ */
.faq-wrap{display:grid;gap:14px;max-width:900px}
.faq-item{border:1px solid var(--line);border-radius:var(--r-md);background:rgba(255,255,255,.03);overflow:hidden;transition:border-color .22s var(--ease)}
.faq-item.is-open{border-color:rgba(44,224,200,.40);background:rgba(255,255,255,.055);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--tx-1);
  min-height:56px;
}
.faq-ic{position:relative;width:22px;height:22px;flex:0 0 auto;transition:transform .24s var(--ease)}
.faq-ic::before,.faq-ic::after{content:"";position:absolute;background:var(--star);border-radius:2px}
.faq-ic::before{left:0;right:0;top:10px;height:2px}
.faq-ic::after{top:0;bottom:0;left:10px;width:2px}
.faq-item.is-open .faq-ic{transform:rotate(45deg)}
.faq-a{display:none;padding:0 20px 20px;border-top:1px solid var(--line)}
.faq-item.is-open .faq-a{display:block}
.faq-a p{padding-top:16px;font-size:15px;line-height:1.8;color:var(--tx-2)}

/* ============ CTA BAND ============ */
.cta-band{
  position:relative;
  border-radius:var(--r-lg);
  border:1px solid rgba(44,224,200,.24);
  background:linear-gradient(180deg,rgba(44,224,200,.10),rgba(44,224,200,.02));
  padding:34px 24px;
  display:grid;gap:20px;
  overflow:hidden;
}
@media (min-width:1024px){.cta-band{grid-template-columns:1.6fr 1fr;align-items:center;padding:40px 36px}}
.cta-band::after{
  content:"";position:absolute;right:-40px;top:-60px;width:240px;height:240px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(76,107,255,.24),transparent 66%);
  pointer-events:none;
}
.cta-band h2{font-size:24px;position:relative;z-index:1}
@media (min-width:768px){.cta-band h2{font-size:27px}}
.cta-band p{margin-top:10px;font-size:14.5px;color:var(--tx-2);max-width:560px;position:relative;z-index:1}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1}
@media (max-width:767px){.cta-actions .btn{width:100%}}

/* ============ FOOTER ============ */
.site-footer{
  margin-top:24px;
  background:var(--bg-2);
  border-top:1px solid rgba(44,224,200,.18);
  padding:52px 0 0;
  position:relative;z-index:1;
}
.footer-top{display:grid;gap:32px;grid-template-columns:1fr}
@media (min-width:640px){.footer-top{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-top{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand .brand-mark{width:28px;height:28px}
.footer-brand .brand-text{font-size:17px}
.footer-col p{margin-top:14px;font-size:13.5px;line-height:1.9;color:var(--tx-2);max-width:340px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--tx-1);letter-spacing:.02em}
.footer-col ul{margin-top:14px;display:grid;gap:2px}
.footer-col li a{font-size:13.5px;color:var(--tx-2);line-height:1.9;transition:color .2s var(--ease)}
.footer-col li a:hover{color:var(--star)}
.footer-social{margin-top:18px;display:flex;gap:10px}
.footer-social span{
  width:34px;height:34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);color:var(--tx-2);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-social span:hover{color:var(--star);border-color:rgba(44,224,200,.45)}
.footer-bottom{
  margin-top:44px;
  border-top:1px solid var(--line);
  padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;align-items:center;
  font-size:12.5px;color:var(--tx-3);
}
.footer-bottom .domain{color:var(--tx-2);letter-spacing:.02em}

/* ============ STICKY CTA (mobile, category only) ============ */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:12px 16px calc(12px + env(safe-area-inset-bottom));
  background:rgba(6,10,24,.86);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-top:1px solid rgba(44,224,200,.22);
  transform:translateY(110%);
  transition:transform .28s var(--ease);
}
.sticky-cta.is-show{transform:translateY(0)}
.sticky-cta strong{display:block;font-size:14px}
.sticky-cta small{display:block;font-size:12px;color:var(--tx-3)}
@media (min-width:768px){.sticky-cta{display:none}}

/* ============ MOTION ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#070C1C}
::-webkit-scrollbar-thumb{background:rgba(44,224,200,.28);border-radius:8px;border:2px solid #070C1C}
::-webkit-scrollbar-thumb:hover{background:rgba(44,224,200,.45)}

/* roulang page: category2 */
:root{
  --bg-0:#060A18;
  --bg-1:#0B1226;
  --bg-2:#050813;
  --star-cyan:#2CE0C8;
  --star-cyan-deep:#17B3A0;
  --aurora-indigo:#4C6BFF;
  --meteor-gold:#FFB03A;
  --tx-1:#E9EFFA;
  --tx-2:#A6B4CE;
  --tx-3:#6E7D99;
  --ok:#35D07F;
  --warn:#FF7A59;
  --line:rgba(255,255,255,.08);
  --panel:rgba(255,255,255,.05);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec-y:56px;
}
@media(min-width:768px){:root{--sec-y:72px;}}
@media(min-width:1024px){:root{--sec-y:96px;}}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--tx-1);
  font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.3;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--star-cyan);outline-offset:2px;border-radius:6px;}

::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#050813;}
::-webkit-scrollbar-thumb{background:rgba(44,224,200,.28);border-radius:999px;}
::-webkit-scrollbar-thumb:hover{background:rgba(44,224,200,.45);}

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

.section{padding-top:var(--sec-y);padding-bottom:var(--sec-y);}
.section--alt{background:var(--bg-1);}
.num-tab{font-variant-numeric:tabular-nums;}

/* ============ 星空装饰 ============ */
.starfield{position:relative;}
.starfield::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:radial-gradient(rgba(233,239,250,.09) 1px, transparent 1px);
  background-size:34px 34px;
  opacity:.9;
  mask-image:linear-gradient(180deg, rgba(0,0,0,.9), transparent 78%);
  -webkit-mask-image:linear-gradient(180deg, rgba(0,0,0,.9), transparent 78%);
}
.orbit-arc{position:absolute;pointer-events:none;opacity:.55;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease), border-color .24s var(--ease), backdrop-filter .24s var(--ease);
}
.site-header.is-stuck{
  background:rgba(11,18,38,.74);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:rgba(44,224,200,.18);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px;}
@media(min-width:1024px){.header-inner{height:72px;}}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:30px;height:30px;flex-shrink:0;}
.brand-text{font-size:18px;font-weight:800;letter-spacing:.01em;color:var(--tx-1);white-space:nowrap;}
@media(min-width:1024px){.brand-text{font-size:19px;}}
.brand-text em{
  font-style:normal;
  background:linear-gradient(100deg,var(--star-cyan),var(--aurora-indigo));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.main-nav{display:none;align-items:center;gap:28px;}
@media(min-width:1024px){.main-nav{display:flex;}}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 12px;
  font-size:15px;
  color:var(--tx-2);
  border-radius:999px;
  transition:color .22s var(--ease), background-color .22s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:1px;
  height:2px;
  border-radius:2px;
  background:var(--star-cyan);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--tx-1);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{
  color:var(--star-cyan);
  background:rgba(44,224,200,.09);
}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:none;align-items:center;gap:18px;}
@media(min-width:1024px){.header-actions{display:flex;}}
.link-sub{font-size:14px;color:var(--tx-2);transition:color .22s var(--ease);}
.link-sub:hover{color:var(--star-cyan);}
.btn-gold{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border:0;
  border-radius:var(--r-sm);
  background:linear-gradient(180deg,#FFC163,#FFB03A);
  color:#0A0F1E;
  font-size:15px;
  font-weight:700;
  cursor:pointer;
  box-shadow:0 0 24px rgba(255,176,58,.30);
  transition:transform .2s var(--ease), filter .2s var(--ease), box-shadow .2s var(--ease);
}
.btn-gold:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 30px rgba(255,176,58,.42);}
.btn-gold:active{transform:translateY(0);}
.btn-gold--sm{height:40px;padding:0 18px;font-size:14px;}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.04);
  color:var(--tx-1);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:border-color .22s var(--ease), background-color .22s var(--ease), transform .2s var(--ease);
}
.btn-ghost:hover{border-color:rgba(44,224,200,.6);background:rgba(44,224,200,.07);transform:translateY(-1px);}

.burger{
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:44px;
  height:44px;
  align-items:center;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.04);
  cursor:pointer;
}
@media(min-width:1024px){.burger{display:none;}}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--tx-1);transition:transform .24s var(--ease), opacity .24s var(--ease);}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:60;
  background:rgba(6,10,24,.92);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  padding:88px 24px 32px;
  display:flex;
  flex-direction:column;
  transform:translateY(-12px);
  opacity:0;
  visibility:hidden;
  transition:opacity .24s var(--ease), transform .24s var(--ease), visibility .24s var(--ease);
}
.mobile-drawer.is-open{opacity:1;transform:translateY(0);visibility:visible;}
.mobile-drawer a.drawer-link{
  display:flex;
  align-items:center;
  gap:14px;
  min-height:52px;
  border-bottom:1px solid rgba(255,255,255,.07);
  color:var(--tx-1);
  font-size:17px;
  font-weight:600;
}
.mobile-drawer a.drawer-link .idx{font-size:12px;color:var(--star-cyan);font-variant-numeric:tabular-nums;}
.mobile-drawer a.drawer-link.is-active{color:var(--star-cyan);}
.drawer-close{
  position:absolute;
  top:20px;
  right:20px;
  width:44px;
  height:44px;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.04);
  color:var(--tx-1);
  cursor:pointer;
  font-size:20px;
  line-height:1;
}
.drawer-cta{margin-top:auto;width:100%;}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:40px 0 56px;
  border-bottom:1px solid rgba(255,255,255,.06);
}
@media(min-width:768px){.page-hero{padding:56px 0 72px;}}
.page-hero::after{
  content:"";
  position:absolute;
  top:-220px;
  right:-140px;
  width:620px;
  height:620px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(44,224,200,.18), transparent 62%);
  pointer-events:none;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--tx-3);margin-bottom:20px;}
.crumb a{color:var(--tx-2);transition:color .2s var(--ease);}
.crumb a:hover{color:var(--star-cyan);}
.crumb .sep{color:var(--star-cyan);}
.hero-grid{display:grid;gap:32px;align-items:center;}
@media(min-width:1024px){.hero-grid{grid-template-columns:1.65fr 1fr;gap:48px;}}
.hero-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:32px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid rgba(44,224,200,.32);
  background:rgba(44,224,200,.09);
  color:var(--star-cyan);
  font-size:13px;
  font-weight:600;
  letter-spacing:.02em;
}
h1{
  margin-top:20px;
  font-size:28px;
  font-weight:800;
  line-height:1.25;
  letter-spacing:.01em;
  color:var(--tx-1);
}
@media(min-width:768px){h1{font-size:36px;}}
@media(min-width:1024px){h1{font-size:42px;}}
h1 .accent{
  background:linear-gradient(100deg,var(--star-cyan),var(--aurora-indigo));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-lead{margin-top:16px;font-size:16px;color:var(--tx-2);max-width:620px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
@media(max-width:520px){.hero-actions .btn-gold,.hero-actions .btn-ghost{width:100%;}}
.hero-badge{
  position:relative;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
  padding:26px 24px;
  display:flex;
  align-items:center;
  gap:20px;
  overflow:hidden;
}
.hero-badge .big{
  font-size:52px;
  font-weight:800;
  line-height:1;
  font-variant-numeric:tabular-nums;
  background:linear-gradient(140deg,#E9EFFA,var(--star-cyan));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-badge .lbl{font-size:14px;color:var(--tx-2);}
.hero-badge .lbl strong{display:block;font-size:16px;color:var(--tx-1);font-weight:700;margin-bottom:4px;}
.hero-thumb{margin-top:22px;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);position:relative;}
.hero-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.hero-thumb::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(6,10,24,.05), rgba(6,10,24,.55));
  pointer-events:none;
}

/* ============ 通用标题 ============ */
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px;}
.sec-head h2{font-size:24px;font-weight:800;color:var(--tx-1);letter-spacing:.01em;}
@media(min-width:768px){.sec-head h2{font-size:28px;}}
.sec-head p{margin-top:10px;font-size:14px;color:var(--tx-3);max-width:600px;}
.sec-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--star-cyan);transition:gap .22s var(--ease), color .22s var(--ease);}
.sec-link:hover{gap:11px;color:#63f0dc;}

/* ============ 时间轴步骤 ============ */
.tl{position:relative;padding-left:56px;}
@media(min-width:768px){.tl{padding-left:76px;}}
.tl::before{
  content:"";
  position:absolute;
  left:21px;
  top:14px;
  bottom:24px;
  width:1px;
  background:linear-gradient(180deg, rgba(44,224,200,.75), rgba(76,107,255,.22) 55%, rgba(76,107,255,0));
}
@media(min-width:768px){.tl::before{left:25px;}}
.tl-item{position:relative;padding-bottom:38px;}
.tl-item:last-child{padding-bottom:0;}
.tl-node{
  position:absolute;
  left:-56px;
  top:2px;
  width:44px;
  height:44px;
  border-radius:999px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:14px;
  font-weight:800;
  font-variant-numeric:tabular-nums;
  color:#04140F;
  background:linear-gradient(140deg,var(--star-cyan),var(--star-cyan-deep));
  box-shadow:0 0 0 6px rgba(44,224,200,.08), 0 0 22px rgba(44,224,200,.34);
}
@media(min-width:768px){.tl-node{left:-76px;width:52px;height:52px;font-size:15px;}}
.tl-card{
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:linear-gradient(160deg, rgba(255,255,255,.055), rgba(255,255,255,.015));
  box-shadow:0 10px 30px rgba(0,0,0,.35);
  padding:22px 22px 24px;
  transition:transform .24s var(--ease), border-color .24s var(--ease);
}
.tl-card:hover{transform:translateY(-4px);border-color:rgba(44,224,200,.45);}
.tl-card h3{font-size:18px;font-weight:700;color:var(--tx-1);}
@media(min-width:768px){.tl-card h3{font-size:19px;}}
.tl-card p{margin-top:10px;font-size:15px;color:var(--tx-2);line-height:1.8;}
.tl-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;}
.tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  color:var(--star-cyan);
  background:rgba(44,224,200,.10);
  border:1px solid rgba(44,224,200,.20);
}
.tag--muted{color:var(--tx-2);background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.10);}

/* ============ 图集 ============ */
.gallery{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:640px){.gallery{grid-template-columns:1fr 1fr;gap:24px;}}
.gallery figure{
  margin:0;
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-1);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
  transition:transform .26s var(--ease), border-color .26s var(--ease);
}
.gallery figure:hover{transform:scale(1.02);border-color:rgba(44,224,200,.45);}
.gallery img{width:100%;object-fit:cover;transition:transform .3s var(--ease);}
.gallery .r-43 img{aspect-ratio:4/3;}
.gallery .r-169 img{aspect-ratio:16/9;}
.gallery .r-11 img{aspect-ratio:1/1;}
.gallery figcaption{padding:14px 18px 16px;font-size:13px;color:var(--tx-3);line-height:1.7;}
.gallery figcaption strong{display:block;font-size:15px;color:var(--tx-1);font-weight:600;margin-bottom:4px;}
.gallery .offset{margin-top:0;}
@media(min-width:640px){.gallery .offset{margin-top:36px;}}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:linear-gradient(160deg, rgba(255,255,255,.05), rgba(255,255,255,.015));
  overflow:hidden;
  transition:border-color .24s var(--ease);
}
.faq-item.is-open{border-color:rgba(44,224,200,.45);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:56px;
  padding:16px 20px;
  border:0;
  background:transparent;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--tx-1);
  cursor:pointer;
  transition:color .22s var(--ease);
}
@media(min-width:768px){.faq-q{font-size:17px;}}
.faq-q:hover{color:var(--star-cyan);}
.faq-icon{
  flex-shrink:0;
  width:26px;
  height:26px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:999px;
  border:1px solid rgba(44,224,200,.35);
  color:var(--star-cyan);
  font-size:16px;
  line-height:1;
  transition:transform .26s var(--ease), background-color .26s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:rgba(44,224,200,.14);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s var(--ease);
}
.faq-a-inner{
  padding:0 20px 20px;
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:16px;
  font-size:15px;
  line-height:1.8;
  color:var(--tx-2);
}

/* ============ 咨询表单 ============ */
.consult-grid{display:grid;gap:32px;}
@media(min-width:1024px){.consult-grid{grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start;}}
.consult-points{display:flex;flex-direction:column;gap:18px;margin-top:26px;}
.consult-points li{display:flex;gap:14px;align-items:flex-start;}
.consult-points .dot{
  flex-shrink:0;
  width:34px;height:34px;
  border-radius:var(--r-sm);
  display:flex;align-items:center;justify-content:center;
  color:var(--star-cyan);
  background:rgba(44,224,200,.10);
  border:1px solid rgba(44,224,200,.22);
}
.consult-points strong{display:block;font-size:15px;font-weight:700;color:var(--tx-1);}
.consult-points span{display:block;font-size:14px;color:var(--tx-3);margin-top:4px;line-height:1.7;}
.form-card{
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.015));
  box-shadow:0 10px 30px rgba(0,0,0,.35);
  padding:24px;
}
@media(min-width:768px){.form-card{padding:30px;}}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--tx-2);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.12);
  background:#0B1226;
  color:var(--tx-1);
  font-size:15px;
  padding:12px 14px;
  transition:border-color .22s var(--ease), box-shadow .22s var(--ease);
  appearance:none;
}
.field textarea{min-height:118px;resize:vertical;line-height:1.7;}
.field select{
  background-image:linear-gradient(45deg,transparent 50%,var(--tx-2) 50%),linear-gradient(135deg,var(--tx-2) 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px, calc(100% - 15px) 21px;
  background-size:5px 5px,5px 5px;
  background-repeat:no-repeat;
}
.field input::placeholder,.field textarea::placeholder{color:var(--tx-3);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--star-cyan);
  box-shadow:0 0 0 4px rgba(44,224,200,.16);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--warn);}
.field .err{display:none;margin-top:6px;font-size:13px;color:var(--warn);}
.field.has-error .err{display:block;}
.form-grid{display:grid;gap:0 18px;}
@media(min-width:640px){.form-grid{grid-template-columns:1fr 1fr;}}
.form-note{margin-top:14px;font-size:13px;color:var(--tx-3);line-height:1.7;}
.form-ok{
  display:none;
  margin-top:16px;
  padding:12px 14px;
  border-radius:var(--r-sm);
  border:1px solid rgba(53,208,127,.4);
  background:rgba(53,208,127,.10);
  color:#8BE8B6;
  font-size:14px;
}
.form-ok.is-show{display:block;}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid rgba(44,224,200,.24);
  background:linear-gradient(140deg, rgba(44,224,200,.12), rgba(76,107,255,.08) 60%, rgba(255,255,255,.02));
  padding:34px 24px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:22px;
}
@media(min-width:768px){.cta-band{padding:44px 44px;}}
.cta-band h2{font-size:22px;font-weight:800;color:var(--tx-1);}
@media(min-width:768px){.cta-band h2{font-size:26px;}}
.cta-band p{margin-top:10px;font-size:15px;color:var(--tx-2);max-width:560px;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-2);
  border-top:1px solid transparent;
  border-image:linear-gradient(90deg, rgba(44,224,200,.55), rgba(76,107,255,.25), transparent) 1;
  padding:56px 0 0;
  margin-top:0;
}
.footer-top{
  display:grid;
  gap:34px;
  padding-bottom:40px;
}
@media(min-width:640px){.footer-top{grid-template-columns:1fr 1fr;}}
@media(min-width:1024px){.footer-top{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}}
.footer-col h4{font-size:14px;font-weight:700;color:var(--tx-1);margin-bottom:16px;letter-spacing:.02em;}
.footer-col p{font-size:13px;line-height:1.9;color:var(--tx-3);}
.footer-col ul li{margin-bottom:8px;}
.footer-col ul a{font-size:13px;line-height:1.9;color:var(--tx-3);transition:color .2s var(--ease);}
.footer-col ul a:hover{color:var(--star-cyan);}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-text{font-size:17px;}
.footer-social{display:flex;gap:12px;margin-top:18px;}
.footer-social span{
  width:34px;height:34px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.10);
  color:var(--tx-2);
  transition:color .2s var(--ease), border-color .2s var(--ease);
}
.footer-social span:hover{color:var(--star-cyan);border-color:rgba(44,224,200,.45);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.07);
  padding:20px 0 26px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--tx-3);
}

/* ============ 移动端粘性 CTA ============ */
.sticky-cta{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:55;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:12px 16px;
  background:rgba(5,8,19,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-top:1px solid rgba(44,224,200,.20);
}
.sticky-cta span{font-size:13px;color:var(--tx-2);}
.sticky-cta .btn-gold{height:42px;padding:0 18px;font-size:14px;}
@media(min-width:768px){.sticky-cta{display:none;}}
@media(max-width:767px){body{padding-bottom:74px;}}

/* ============ 进场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease), transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:translateY(0);}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}