/* roulang page: index */
:root{
  --bg:#060A14;
  --panel:#0B1220;
  --card:rgba(255,255,255,.045);
  --card-hi:rgba(255,255,255,.075);
  --footer-bg:#04070E;
  --purple:#7C3AED;
  --purple-lt:#A78BFA;
  --lime:#C6F24E;
  --coral:#FF6B4A;
  --green:#34D399;
  --amber:#FBBF24;
  --rose:#FB7185;
  --text:#E7EDF7;
  --text-2:#94A3B8;
  --text-3:#64748B;
  --line:rgba(255,255,255,.10);
  --divider:rgba(255,255,255,.06);
  --r-card:20px;
  --r-sm:16px;
  --r-btn:14px;
  --shadow-card:0 18px 40px -18px rgba(0,0,0,.65);
  --max:1280px;
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","HarmonyOS Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-bottom:64px;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(720px 520px at 6% -8%, rgba(124,58,237,.10), transparent 62%),
    radial-gradient(680px 480px at 98% 102%, rgba(198,242,78,.06), transparent 60%);
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--purple-lt);outline-offset:3px;border-radius:6px}
::selection{background:rgba(198,242,78,.28)}

.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 16px;position:relative;z-index:1}
@media(min-width:768px){.container{padding:0 24px}}
@media(min-width:1024px){.container{max-width:1200px;padding:0 32px}}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(6,10,20,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--divider);
}
.nav{display:flex;align-items:center;gap:16px;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16.5px;white-space:nowrap}
.logo-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:11px;
  background:linear-gradient(135deg,var(--purple),#4C1D95);
  display:grid;place-items:center;color:#fff;font-size:14px;font-weight:800;
  box-shadow:0 10px 24px -12px rgba(124,58,237,.95);
}
.logo-text{color:var(--text)}
.logo-text em{font-style:normal;color:var(--lime)}
.nav-links{display:none}
@media(min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
}
.nav-links a{
  position:relative;display:block;padding:9px 13px;border-radius:10px;
  font-size:15px;color:var(--text-2);transition:color .2s,background .2s;
}
.nav-links a:hover{color:var(--text);background:var(--card)}
.nav-links a::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;border-radius:2px;
  background:var(--lime);transform:scaleX(0);transform-origin:left;transition:transform .24s ease;
}
.nav-links a.active{color:var(--text)}
.nav-links a.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
@media(min-width:1024px){.nav-actions{margin-left:14px}}
.icon-btn{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line);background:var(--card);color:var(--text-2);
  transition:color .2s,border-color .2s,background .2s,transform .2s;
}
.icon-btn:hover{color:var(--text);border-color:rgba(167,139,250,.45);background:var(--card-hi);transform:translateY(-2px)}
.icon-btn svg{width:19px;height:19px}
.nav-cta{display:none}
@media(min-width:1024px){.nav-cta{display:inline-flex}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;white-space:nowrap;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
}
.btn svg{width:16px;height:16px}
.btn-primary{
  background:var(--lime);color:#0A1014;
  box-shadow:0 0 0 1px rgba(198,242,78,.35),0 10px 30px -8px rgba(198,242,78,.45);
}
.btn-primary:hover{transform:translateY(-2px);background:#D4FA6C}
.btn-primary:active{transform:translateY(0);filter:saturate(.9)}
.btn-outline{border:1px solid rgba(167,139,250,.45);color:var(--text);background:transparent}
.btn-outline:hover{transform:translateY(-2px);border-color:var(--purple-lt);background:rgba(124,58,237,.14)}
.btn-ghost{color:var(--purple-lt);font-weight:600;padding:8px 2px;display:inline-flex;align-items:center;gap:6px}
.btn-ghost .arrow{transition:transform .22s ease}
.btn-ghost:hover .arrow{transform:translateX(3px)}
.btn-sm{padding:9px 16px;font-size:14px}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:5px;
  padding:3px 9px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.04em;line-height:1.5;
  white-space:nowrap;
}
.badge-purple{background:rgba(124,58,237,.22);color:#C4B5FD;border:1px solid rgba(124,58,237,.35)}
.badge-coral{background:rgba(255,107,74,.18);color:#FFB39F;border:1px solid rgba(255,107,74,.32)}
.badge-lime{background:rgba(198,242,78,.14);color:#D5F77E;border:1px solid rgba(198,242,78,.30)}
.badge-ghost{background:rgba(255,255,255,.05);color:var(--text-2);border:1px solid var(--line)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:34px 0 52px}
.hero-bg{
  position:absolute;inset:0;z-index:0;
  background:url(/assets/images/backpic/back-1.webp) center/cover no-repeat;
  opacity:.55;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,20,.72) 0%,rgba(6,10,20,.86) 55%,rgba(6,10,20,.98) 100%);
}
.hero-sweep{
  content:"";position:absolute;top:-25%;left:-35%;width:55%;height:150%;z-index:1;
  background:linear-gradient(100deg,transparent 42%,rgba(255,255,255,.07) 50%,transparent 58%);
  transform:rotate(9deg);pointer-events:none;
}
.hero-grid{position:relative;z-index:2;display:grid;gap:38px}
@media(min-width:1024px){.hero-grid{grid-template-columns:1.06fr .94fr;gap:48px;align-items:center}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.14em;
  color:var(--purple-lt);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--purple-lt);opacity:.7}
.hero h1{
  font-size:30px;line-height:1.34;font-weight:800;margin:14px 0 16px;
}
@media(min-width:768px){.hero h1{font-size:38px;line-height:1.26}}
@media(min-width:1024px){.hero h1{font-size:48px;line-height:1.18}}
.hl{color:var(--text);border-bottom:2px solid var(--lime);padding-bottom:1px}
.hero-sub{
  color:var(--text-2);font-size:15.5px;line-height:1.85;max-width:600px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.stat{
  min-width:118px;padding:12px 16px;border-radius:var(--r-sm);
  background:var(--card);border:1px solid var(--line);
  transition:border-color .25s,transform .25s;
}
.stat:hover{border-color:rgba(198,242,78,.30);transform:translateY(-2px)}
.stat b{
  display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:22px;font-weight:800;color:var(--lime);line-height:1.3;
}
.stat span{font-size:13px;color:var(--text-2)}
.hero-media{position:relative;display:flex;align-items:center;justify-content:center;min-height:330px}
@media(min-width:1024px){.hero-media{min-height:520px}}
.phone-card{
  position:relative;border-radius:22px;overflow:hidden;
  border:1px solid var(--line);background:var(--panel);box-shadow:var(--shadow-card);
}
.phone-card::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(6,10,20,.10) 32%,rgba(6,10,20,.82) 100%);
}
.phone-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.phone-main{width:212px;aspect-ratio:9/16;z-index:3}
@media(min-width:1024px){.phone-main{width:242px}}
.phone-sub{position:absolute;width:128px;aspect-ratio:9/16;z-index:2;opacity:.9}
.phone-sub.a{left:0;top:34px;transform:rotate(-7deg)}
.phone-sub.b{right:0;bottom:18px;transform:rotate(6deg)}
@media(max-width:640px){.phone-sub{width:100px}}
@media(max-width:520px){.phone-sub{display:none}}
.play-badge{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:56px;height:56px;border-radius:50%;z-index:3;
  background:rgba(198,242,78,.94);color:#0A1014;
  display:grid;place-items:center;font-size:16px;
  box-shadow:0 12px 32px -10px rgba(198,242,78,.65);
}
.duration{
  position:absolute;top:12px;right:12px;z-index:3;
  padding:3px 8px;border-radius:999px;
  background:rgba(4,7,14,.75);font-size:12px;color:#fff;
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
}
.phone-caption{
  position:absolute;left:14px;right:14px;bottom:14px;z-index:3;
  display:grid;gap:3px;
}
.phone-caption strong{font-size:14px;font-weight:700;color:#fff}
.phone-caption span{font-size:12px;color:rgba(255,255,255,.7)}

/* ---------- sections ---------- */
.section{padding:48px 0;position:relative;z-index:1}
@media(min-width:1024px){.section{padding:88px 0}}
.section-panel{background:linear-gradient(180deg,rgba(11,18,32,.85),rgba(6,10,20,.55));border-top:1px solid var(--divider);border-bottom:1px solid var(--divider)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:26px;flex-wrap:wrap}
.section-head h2{font-size:24px;line-height:1.35}
@media(min-width:1024px){.section-head h2{font-size:32px;line-height:1.3}}
.section-head .lead{margin-top:10px;color:var(--text-2);font-size:15px;max-width:760px;line-height:1.85}
.tagline{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.14em;
  color:var(--purple-lt);text-transform:uppercase;margin-bottom:10px;
}

/* ---------- clip track ---------- */
.clip-track{
  display:grid;grid-auto-flow:column;grid-auto-columns:64%;gap:14px;
  overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 16px;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.clip-track::-webkit-scrollbar{display:none}
@media(min-width:520px){.clip-track{grid-auto-columns:44%}}
@media(min-width:768px){.clip-track{grid-auto-columns:30%}}
@media(min-width:1024px){.clip-track{grid-auto-columns:22.4%}}
.clip-card{
  position:relative;aspect-ratio:9/16;border-radius:var(--r-sm);overflow:hidden;
  border:1px solid var(--line);background:var(--panel);scroll-snap-align:start;
  box-shadow:var(--shadow-card);
  transition:transform .28s ease,border-color .28s ease;
}
.clip-card:hover{transform:translateY(-4px);border-color:rgba(167,139,250,.38)}
.clip-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.clip-card:hover img{transform:scale(1.05)}
.clip-card::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(4,7,14,.06) 38%,rgba(4,7,14,.92) 100%);
}
.clip-top{position:absolute;top:10px;left:10px;right:10px;z-index:3;display:flex;justify-content:space-between;gap:8px}
.clip-bottom{position:absolute;left:12px;right:12px;bottom:12px;z-index:3}
.clip-bottom h3{
  font-size:14px;font-weight:600;line-height:1.5;color:#fff;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.clip-icons{display:flex;align-items:center;gap:14px;margin-top:10px;color:rgba(255,255,255,.72);font-size:12px}
.clip-icons span{display:inline-flex;align-items:center;gap:5px;font-family:var(--font-num);font-variant-numeric:tabular-nums}
.clip-icons svg{width:15px;height:15px}

/* ---------- numbered list ---------- */
.num-list{border-top:1px solid var(--divider)}
.num-item{
  position:relative;display:grid;grid-template-columns:52px 1fr;gap:16px;
  align-items:start;padding:20px 8px 20px 12px;
  border-bottom:1px solid var(--divider);
  transition:transform .25s ease;
}
.num-item::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:2px;border-radius:2px;
  background:var(--lime);opacity:0;transition:opacity .25s ease;
}
.num-item:hover{transform:translateX(4px)}
.num-item:hover::before{opacity:1}
.num-item .idx{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:22px;font-weight:800;line-height:1.3;
  color:rgba(167,139,250,.6);letter-spacing:.02em;
}
.num-item h3{font-size:17px;font-weight:600;line-height:1.55}
.num-item h3 .badge{margin-left:8px;vertical-align:middle}
.num-item p{margin-top:5px;color:var(--text-2);font-size:14.5px;line-height:1.75;max-width:760px}

/* ---------- category grid ---------- */
.cat-grid{display:grid;gap:14px;grid-template-columns:repeat(2,1fr)}
@media(min-width:1024px){.cat-grid{grid-template-columns:repeat(4,1fr)}}
.cat-card{
  display:flex;flex-direction:column;gap:10px;
  padding:20px;border-radius:var(--r-card);
  background:var(--card);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform .26s ease,border-color .26s ease,background .26s ease;
}
.cat-card:hover{transform:translateY(-4px);border-color:rgba(198,242,78,.32);background:var(--card-hi)}
.cat-icon{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;
  background:rgba(124,58,237,.18);border:1px solid rgba(124,58,237,.32);color:#C4B5FD;
}
.cat-icon svg{width:21px;height:21px}
.cat-card h3{font-size:16.5px;font-weight:700}
.cat-card p{color:var(--text-2);font-size:14px;line-height:1.75}
.cat-more{margin-top:auto;display:inline-flex;align-items:center;gap:6px;color:var(--lime);font-size:13.5px;font-weight:600}
.cat-more .arrow{transition:transform .22s ease}
.cat-card:hover .cat-more .arrow{transform:translateX(3px)}

/* ---------- news grid ---------- */
.news-grid{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:768px){.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;overflow:hidden;
  border-radius:var(--r-card);background:var(--card);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform .26s ease,border-color .26s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(167,139,250,.35)}
.news-thumb{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:var(--panel)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-thumb::after{content:"";position:absolute;inset:0;background:rgba(4,7,14,.12)}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body h3{
  font-size:16.5px;font-weight:600;line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease;
}
.news-card:hover .news-body h3{color:var(--lime)}
.news-body p{
  color:var(--text-2);font-size:14px;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding-top:12px;border-top:1px solid var(--divider);
  font-size:13px;color:var(--text-3);
}
.news-meta .date{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
}
.news-meta svg{width:14px;height:14px}
.news-meta .arrow-link{color:var(--purple-lt);display:inline-flex;align-items:center;gap:4px;transition:color .2s}
.news-card:hover .news-meta .arrow-link{color:var(--lime)}
.empty-state{
  grid-column:1/-1;display:grid;place-items:center;gap:12px;
  padding:48px 20px;border-radius:var(--r-card);
  background:var(--card);border:1px dashed var(--line);text-align:center;
}
.empty-state svg{width:34px;height:34px;color:var(--text-3)}
.empty-state p{color:var(--text-2);font-size:15px}

/* ---------- reviews ---------- */
.review-marquee{
  overflow:hidden;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);
}
.review-track{display:flex;gap:14px;width:max-content;animation:marquee 46s linear infinite}
.review-marquee:hover .review-track{animation-play-state:paused}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.review-card{
  width:272px;padding:18px;border-radius:var(--r-sm);
  background:var(--card);border:1px solid var(--line);
  display:grid;gap:10px;
}
.review-head{display:flex;align-items:center;gap:10px}
.avatar{
  width:36px;height:36px;flex:0 0 36px;border-radius:50%;
  display:grid;place-items:center;font-size:14px;font-weight:700;color:#0A1014;
  background:linear-gradient(135deg,var(--lime),#8FD1B0);
}
.avatar.alt{background:linear-gradient(135deg,var(--purple-lt),var(--purple));color:#fff}
.review-head strong{font-size:14px;font-weight:600}
.review-head span{display:block;font-size:12px;color:var(--text-3)}
.review-card p{font-size:14px;color:var(--text-2);line-height:1.7}
.stars{color:var(--amber);font-size:13px;letter-spacing:.16em}

/* ---------- faq ---------- */
.faq{display:grid;gap:12px;max-width:920px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-sm);
  background:var(--card);overflow:hidden;
  transition:border-color .25s ease,background .25s ease;
}
.faq-item:hover{border-color:rgba(167,139,250,.30)}
.faq-item.open{border-color:rgba(198,242,78,.28);background:var(--card-hi)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-icon{position:relative;width:22px;height:22px;flex:0 0 22px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--lime);border-radius:2px;
  transition:transform .3s ease,opacity .3s ease;
}
.faq-icon::before{width:13px;height:2px;top:10px;left:4.5px}
.faq-icon::after{width:2px;height:13px;top:4.5px;left:10px}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .36s ease}
.faq-item.open .faq-a{max-height:340px}
.faq-a p{padding:0 20px 20px;color:var(--text-2);font-size:15px;line-height:1.85;max-width:760px}

/* ---------- cta banner ---------- */
.cta-banner{
  position:relative;overflow:hidden;
  border-radius:24px;border:1px solid rgba(198,242,78,.22);
  background:
    radial-gradient(520px 320px at 88% 12%, rgba(198,242,78,.10), transparent 62%),
    linear-gradient(118deg, rgba(124,58,237,.30), rgba(4,7,14,.62) 58%),
    var(--panel);
  padding:28px;display:grid;gap:22px;
  box-shadow:var(--shadow-card);
}
@media(min-width:1024px){
  .cta-banner{grid-template-columns:1fr auto;align-items:center;padding:40px 44px}
}
.cta-banner h2{font-size:22px;line-height:1.4}
@media(min-width:1024px){.cta-banner h2{font-size:30px;line-height:1.32}}
.cta-banner p{margin-top:10px;color:var(--text-2);font-size:15px;max-width:660px;line-height:1.85}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- footer ---------- */
.site-footer{
  position:relative;z-index:1;background:var(--footer-bg);
  border-top:1px solid var(--divider);
  padding:48px 0 96px;
}
@media(min-width:1024px){.site-footer{padding:64px 0 28px}}
.footer-grid{display:grid;gap:30px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}}
.footer-brand p{margin-top:14px;color:var(--text-2);font-size:14px;line-height:1.85;max-width:360px}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.footer-title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px}
.footer-links li{margin-bottom:11px}
.footer-links a{color:var(--text-2);font-size:14px;transition:color .2s ease}
.footer-links a:hover{color:var(--lime)}
.footer-bottom{
  margin-top:32px;padding-top:18px;border-top:1px solid var(--divider);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--text-2)}

/* ---------- mobile tabbar ---------- */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:60;
  display:grid;grid-template-columns:repeat(5,1fr);
  background:rgba(4,7,14,.95);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--divider);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tabbar a{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;height:56px;font-size:10.5px;color:var(--text-3);
  transition:color .2s ease;
}
.mobile-tabbar a svg{width:19px;height:19px}
.mobile-tabbar a.active{color:var(--lime)}
.mobile-tabbar a.active::before{
  content:"";position:absolute;top:0;width:24px;height:2px;border-radius:2px;background:var(--lime);
}
@media(min-width:1024px){.mobile-tabbar{display:none}}

/* ---------- sticky follow bar / float cta ---------- */
.follow-bar{
  position:fixed;left:0;right:0;bottom:56px;z-index:55;
  display:flex;align-items:center;gap:12px;
  padding:10px 14px;
  background:rgba(4,7,14,.94);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--divider);
  transform:translateY(160%);
  transition:transform .32s ease;
}
.follow-bar.show{transform:translateY(0)}
.follow-bar img{width:38px;height:48px;object-fit:cover;border-radius:10px;flex:0 0 38px;border:1px solid var(--line)}
.follow-bar .fb-text{flex:1;min-width:0}
.follow-bar strong{display:block;font-size:13.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.follow-bar span{display:block;font-size:12px;color:var(--text-3)}
@media(min-width:1024px){.follow-bar{display:none}}
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:55;
  display:none;opacity:0;transform:translateY(14px);
  transition:opacity .3s ease,transform .3s ease;
}
.float-cta.show{opacity:1;transform:translateY(0)}
@media(min-width:1024px){.float-cta{display:inline-flex}}

/* roulang page: category1 */
:root{
  --bg:#060A14;
  --bg-panel:#0B1220;
  --bg-footer:#04070E;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.075);
  --purple:#7C3AED;
  --purple-light:#A78BFA;
  --lime:#C6F24E;
  --coral:#FF6B4A;
  --ok:#34D399;
  --warn:#FBBF24;
  --err:#FB7185;
  --text:#E7EDF7;
  --text-2:#94A3B8;
  --text-3:#64748B;
  --line:rgba(255,255,255,.10);
  --line-soft:rgba(255,255,255,.06);
  --r-xl:24px;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --shadow:0 18px 40px -18px rgba(0,0,0,.65);
  --shadow-lg:0 30px 70px -30px rgba(0,0,0,.8);
  --glow:0 0 0 1px rgba(198,242,78,.35),0 10px 30px -8px rgba(198,242,78,.45);
  --container:1200px;
  --dur:.28s;
  --safe-bottom:env(safe-area-inset-bottom,0px);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:
    radial-gradient(900px 620px at 6% -8%, rgba(124,58,237,.12), transparent 70%),
    radial-gradient(760px 520px at 102% 104%, rgba(198,242,78,.07), transparent 72%),
    var(--bg);
  background-attachment:fixed;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color var(--dur),background var(--dur),border-color var(--dur),opacity var(--dur);}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--purple-light);outline-offset:3px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 16px;
}
@media(min-width:768px){.container{padding:0 24px;}}
@media(min-width:1280px){.container{padding:0 32px;}}

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:14px;font-size:15px;font-weight:700;
  letter-spacing:.01em;white-space:nowrap;border:1px solid transparent;
  transition:transform .2s ease,box-shadow var(--dur),background var(--dur),border-color var(--dur),color var(--dur);
}
.btn i{font-size:14px;}
.btn-primary{
  background:var(--lime);color:#0A1010;box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-4px);box-shadow:0 0 0 1px rgba(198,242,78,.5),0 18px 40px -10px rgba(198,242,78,.55);}
.btn-primary:active{transform:translateY(-1px);filter:saturate(.85);}
.btn-outline{
  background:transparent;color:var(--purple-light);border-color:rgba(167,139,250,.45);
}
.btn-outline:hover{transform:translateY(-4px);border-color:var(--purple-light);background:rgba(124,58,237,.14);color:#fff;}
.btn-ghost{
  padding:8px 4px;color:var(--text-2);font-weight:600;gap:6px;border:0;
}
.btn-ghost i{transition:transform .2s ease;}
.btn-ghost:hover{color:var(--lime);}
.btn-ghost:hover i{transform:translateX(3px);}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:12px;}

.badge{
  display:inline-flex;align-items:center;gap:5px;
  padding:5px 11px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.04em;
  border:1px solid var(--line);background:var(--glass);color:var(--text-2);
}
.badge-purple{background:rgba(124,58,237,.16);border-color:rgba(167,139,250,.34);color:var(--purple-light);}
.badge-lime{background:rgba(198,242,78,.14);border-color:rgba(198,242,78,.34);color:var(--lime);}
.badge-coral{background:rgba(255,107,74,.15);border-color:rgba(255,107,74,.36);color:#FF9C82;}
.badge-ghost{background:var(--glass);}

.section{padding:56px 0;}
@media(min-width:1024px){.section{padding:88px 0;}}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:28px;flex-wrap:wrap;
}
.section-head h2{
  font-size:26px;line-height:1.35;font-weight:700;letter-spacing:-.01em;
}
@media(min-width:768px){.section-head h2{font-size:34px;}}
.section-head p{color:var(--text-2);font-size:14.5px;margin-top:8px;max-width:640px;line-height:1.8;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,20,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background var(--dur),border-color var(--dur),box-shadow var(--dur);
}
.site-header.is-scrolled{
  background:rgba(6,10,20,.9);
  border-bottom-color:var(--line-soft);
  box-shadow:0 14px 34px -26px rgba(0,0,0,.95);
}
.nav{display:flex;align-items:center;gap:18px;height:70px;}
@media(min-width:1024px){.nav{height:76px;}}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(140deg,#8B5CF6,#4C1D95);
  color:#fff;font-weight:800;font-size:18px;
  box-shadow:0 10px 24px -12px rgba(124,58,237,.95),inset 0 0 0 1px rgba(255,255,255,.16);
}
.logo-text{font-size:17px;font-weight:800;letter-spacing:-.01em;color:#fff;white-space:nowrap;}
.logo-text em{font-style:normal;color:var(--lime);}
.nav-links{display:none;flex:1;justify-content:center;gap:4px;}
.nav-links a{
  position:relative;padding:9px 13px;border-radius:11px;
  font-size:14.5px;font-weight:600;color:var(--text-2);
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.05);}
.nav-links a.active{color:#fff;}
.nav-links a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;
  background:var(--lime);box-shadow:0 0 12px rgba(198,242,78,.75);
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.icon-btn{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line);background:var(--glass);color:var(--text-2);
  transition:color var(--dur),border-color var(--dur),background var(--dur),transform var(--dur);
}
.icon-btn svg{width:19px;height:19px;}
.icon-btn:hover{color:var(--lime);border-color:rgba(198,242,78,.4);background:rgba(198,242,78,.08);transform:translateY(-2px);}
.nav-cta{display:none;}
@media(min-width:1024px){
  .nav-links{display:flex;}
  .nav-cta{display:inline-flex;}
}

/* ============ 移动端底部 Tab ============ */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:grid;grid-template-columns:repeat(5,1fr);
  height:calc(56px + var(--safe-bottom));
  padding-bottom:var(--safe-bottom);
  background:rgba(5,8,17,.94);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-top:1px solid var(--line-soft);
}
.mobile-tabbar a{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--text-3);position:relative;
}
.mobile-tabbar a i{font-size:17px;}
.mobile-tabbar a.active{color:var(--lime);}
.mobile-tabbar a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;background:var(--lime);
  box-shadow:0 0 12px rgba(198,242,78,.8);
}
@media(min-width:1024px){.mobile-tabbar{display:none;}}
@media(max-width:1023px){body{padding-bottom:calc(56px + var(--safe-bottom));}}

/* ============ 分类页头横幅 ============ */
.page-banner{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line-soft);
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center 32%;
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(4,7,14,.94) 0%,rgba(4,7,14,.78) 45%,rgba(11,18,32,.86) 100%);
}
.page-banner::after{
  content:"";position:absolute;top:-40%;left:-10%;width:60%;height:200%;
  background:linear-gradient(100deg,transparent 40%,rgba(198,242,78,.06) 50%,transparent 60%);
  transform:rotate(8deg);pointer-events:none;
}
.banner-inner{position:relative;z-index:2;padding:38px 0 44px;}
@media(min-width:1024px){.banner-inner{padding:56px 0 62px;}}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);margin-bottom:18px;
}
.breadcrumb a:hover{color:var(--lime);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .cur{color:var(--text-2);}
.banner-inner h1{
  font-size:29px;line-height:1.34;font-weight:800;letter-spacing:-.02em;max-width:880px;
}
@media(min-width:768px){.banner-inner h1{font-size:40px;}}
@media(min-width:1024px){.banner-inner h1{font-size:46px;line-height:1.22;}}
.banner-inner h1 .hl{
  color:var(--lime);
  box-shadow:inset 0 -10px 0 rgba(198,242,78,.16);
}
.banner-desc{
  margin-top:18px;max-width:760px;color:var(--text-2);font-size:16px;line-height:1.9;
}
@media(max-width:767px){.banner-desc{font-size:15.5px;line-height:1.85;}}
.banner-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.banner-badges .badge{padding:7px 14px;font-size:12.5px;}

/* ============ 分类 Tab 切换条 ============ */
.cat-tabs{
  position:sticky;top:70px;z-index:40;
  background:rgba(6,10,20,.88);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-soft);
}
@media(min-width:1024px){.cat-tabs{top:76px;}}
.cat-tabs-inner{
  display:flex;gap:8px;overflow-x:auto;padding:12px 0;scrollbar-width:none;
}
.cat-tabs-inner::-webkit-scrollbar{display:none;}
.cat-tabs-inner a{
  flex:0 0 auto;padding:9px 16px;border-radius:999px;
  font-size:14px;font-weight:600;color:var(--text-2);
  border:1px solid var(--line);background:var(--glass);
  transition:all var(--dur);
}
.cat-tabs-inner a:hover{color:#fff;border-color:rgba(167,139,250,.5);transform:translateY(-2px);}
.cat-tabs-inner a.active{
  background:rgba(198,242,78,.13);border-color:rgba(198,242,78,.55);color:var(--lime);
  box-shadow:0 0 0 1px rgba(198,242,78,.18),0 10px 26px -14px rgba(198,242,78,.6);
}

/* ============ 双列大卡 ============ */
.grid-2{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:900px){.grid-2{grid-template-columns:repeat(2,1fr);gap:24px;}}
.big-card{
  position:relative;display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--r-xl);border:1px solid var(--line);background:var(--glass);
  box-shadow:var(--shadow);
  transition:transform var(--dur),border-color var(--dur),box-shadow var(--dur);
}
.big-card:hover{transform:translateY(-4px);border-color:rgba(167,139,250,.42);box-shadow:var(--shadow-lg);}
.big-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;}
.big-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.big-card:hover .thumb img{transform:scale(1.04);}
.big-card .thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(4,7,14,.1),rgba(4,7,14,.7));
}
.big-card .thumb .tag{position:absolute;top:14px;left:14px;z-index:2;}
.big-card .body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
@media(min-width:1024px){.big-card .body{padding:28px;}}
.big-card h3{font-size:21px;line-height:1.5;font-weight:700;}
.big-card p{color:var(--text-2);font-size:15px;line-height:1.85;}
.big-card ul{display:flex;flex-direction:column;gap:9px;margin-top:2px;}
.big-card ul li{
  position:relative;padding-left:22px;color:var(--text-2);font-size:14.5px;line-height:1.75;
}
.big-card ul li::before{
  content:"";position:absolute;left:4px;top:11px;width:8px;height:8px;border-radius:3px;
  background:rgba(198,242,78,.85);box-shadow:0 0 10px rgba(198,242,78,.45);
}
.big-card .foot{margin-top:auto;padding-top:8px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;}

/* ============ 速查表 ============ */
.table-shell{
  border-radius:var(--r-lg);border:1px solid var(--line);background:var(--glass);
  box-shadow:var(--shadow);overflow:hidden;
}
.table-scroll{overflow-x:auto;}
.spec-table{min-width:560px;font-size:14.5px;}
.spec-table caption{
  text-align:left;padding:20px 22px 6px;font-size:14px;color:var(--text-3);
}
.spec-table th,.spec-table td{
  padding:15px 22px;text-align:left;vertical-align:top;line-height:1.7;
}
.spec-table thead th{
  font-size:13px;letter-spacing:.05em;text-transform:none;color:var(--text-3);
  background:rgba(255,255,255,.03);font-weight:600;
  border-bottom:1px solid var(--line);
}
.spec-table tbody tr:nth-child(odd){background:rgba(255,255,255,.022);}
.spec-table tbody tr{border-bottom:1px solid var(--line-soft);transition:background var(--dur);}
.spec-table tbody tr:last-child{border-bottom:0;}
.spec-table tbody tr:hover{background:rgba(124,58,237,.10);}
.spec-table td:first-child{
  color:var(--text);font-weight:600;white-space:nowrap;width:180px;
}
.spec-table td:last-child{color:var(--text-2);}
.spec-table .val{color:var(--lime);font-weight:600;font-variant-numeric:tabular-nums;}

/* ============ 三栏小卡 ============ */
.grid-3{display:grid;grid-template-columns:1fr;gap:18px;}
@media(min-width:640px){.grid-3{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.grid-3{grid-template-columns:repeat(3,1fr);gap:22px;}}
.mini-card{
  padding:22px;border-radius:var(--r-lg);border:1px solid var(--line);background:var(--glass);
  box-shadow:var(--shadow);transition:transform var(--dur),border-color var(--dur);
}
.mini-card:hover{transform:translateY(-4px);border-color:rgba(198,242,78,.35);}
.mini-card .idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;margin-bottom:14px;
  background:rgba(124,58,237,.18);border:1px solid rgba(167,139,250,.28);
  color:var(--purple-light);font-weight:800;font-size:15px;font-variant-numeric:tabular-nums;
}
.mini-card h3{font-size:17.5px;font-weight:700;margin-bottom:8px;}
.mini-card p{color:var(--text-2);font-size:14.5px;line-height:1.85;}

/* ============ 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:var(--glass);
  overflow:hidden;transition:border-color var(--dur),background var(--dur);
}
.faq-item[open]{border-color:rgba(167,139,250,.38);background:rgba(255,255,255,.06);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:17px 20px;font-size:16px;font-weight:600;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--lime);}
.faq-icon{
  position:relative;flex:0 0 auto;width:20px;height:20px;border-radius:50%;
  background:rgba(124,58,237,.2);border:1px solid rgba(167,139,250,.3);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--purple-light);
  transform:translate(-50%,-50%);transition:transform .3s ease,opacity .3s ease;
}
.faq-icon::before{width:10px;height:2px;}
.faq-icon::after{width:2px;height:10px;}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-item[open] .faq-icon::before{background:var(--lime);}
.faq-body{padding:0 20px 20px;color:var(--text-2);font-size:15px;line-height:1.9;}
.faq-body p+p{margin-top:10px;}

/* ============ CTA 横幅 ============ */
.cta-banner{
  position:relative;overflow:hidden;
  border-radius:var(--r-xl);border:1px solid rgba(198,242,78,.22);
  background:
    radial-gradient(700px 320px at 12% 0%, rgba(124,58,237,.3), transparent 70%),
    radial-gradient(560px 300px at 96% 110%, rgba(198,242,78,.16), transparent 70%),
    #0B1220;
  padding:30px 22px;
  display:flex;flex-direction:column;gap:22px;
  box-shadow:var(--shadow-lg);
}
@media(min-width:900px){
  .cta-banner{flex-direction:row;align-items:center;justify-content:space-between;padding:40px 44px;gap:40px;}
}
.cta-banner h2{font-size:24px;line-height:1.4;font-weight:800;}
@media(min-width:768px){.cta-banner h2{font-size:30px;}}
.cta-banner p{color:var(--text-2);margin-top:10px;font-size:15px;line-height:1.85;max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto;}

/* ============ 浮动进入条 ============ */
.floating-cta{
  position:fixed;z-index:65;
  left:12px;right:12px;bottom:calc(64px + var(--safe-bottom));
  display:flex;align-items:center;gap:12px;
  padding:10px 12px;border-radius:16px;
  background:rgba(11,18,32,.94);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-lg);
  transform:translateY(140%);opacity:0;pointer-events:none;
  transition:transform .38s cubic-bezier(.2,.8,.25,1),opacity .3s ease;
}
.floating-cta.show{transform:translateY(0);opacity:1;pointer-events:auto;}
.floating-cta img{width:44px;height:44px;border-radius:12px;object-fit:cover;flex:0 0 auto;}
.floating-cta .fc-text{min-width:0;flex:1;}
.floating-cta .fc-text strong{
  display:block;font-size:14px;font-weight:700;line-height:1.4;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.floating-cta .fc-text span{display:block;font-size:12px;color:var(--text-3);line-height:1.5;}
@media(min-width:1024px){
  .floating-cta{
    left:auto;right:28px;bottom:28px;width:auto;max-width:340px;
    border-radius:999px;padding:8px 10px 8px 8px;
  }
  .floating-cta .fc-text{max-width:150px;}
  .floating-cta .btn{padding:9px 16px;font-size:13.5px;border-radius:999px;}
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:60px;
  background:var(--bg-footer);
  border-top:1px solid var(--line-soft);
  padding:52px 0 26px;
}
@media(min-width:1024px){.site-footer{margin-top:88px;padding:66px 0 28px;}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media(min-width:680px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}}
.footer-brand p{color:var(--text-2);font-size:14.5px;line-height:1.9;margin-top:16px;max-width:400px;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.footer-title{
  font-size:14px;font-weight:700;letter-spacing:.08em;color:#fff;margin-bottom:16px;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{color:var(--text-2);font-size:14.5px;}
.footer-links a:hover{color:var(--lime);transform:translateX(3px);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
@media(max-width:520px){
  .footer-bottom{flex-direction:column;}
  .banner-inner h1{font-size:26px;}
  .section-head h2{font-size:23px;}
  .big-card h3{font-size:19px;}
}

/* roulang page: article */
:root{
  --bg:#060A14;
  --bg-2:#0B1220;
  --bg-3:#04070E;
  --glass:rgba(255,255,255,.045);
  --purple:#7C3AED;
  --purple-2:#A78BFA;
  --lime:#C6F24E;
  --coral:#FF6B4A;
  --ok:#34D399;
  --warn:#FBBF24;
  --err:#FB7185;
  --text:#E7EDF7;
  --text-2:#94A3B8;
  --text-3:#64748B;
  --line:rgba(255,255,255,.10);
  --line-soft:rgba(255,255,255,.06);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --shadow:0 18px 40px -18px rgba(0,0,0,.65);
  --container:1200px;
  --gap:16px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",Inter,system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(620px 430px at 6% -4%,rgba(124,58,237,.17),transparent 62%),
    radial-gradient(520px 380px at 102% 102%,rgba(198,242,78,.075),transparent 60%);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none}
h1,h2,h3,h4,h5{margin:0;line-height:1.28;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:8px}
.num{font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 16px;position:relative;z-index:1}
@media(min-width:768px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,10,20,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .3s,border-color .3s,box-shadow .3s;
}
.site-header.is-scrolled{background:rgba(6,10,20,.94);border-bottom-color:var(--line-soft);box-shadow:0 12px 30px -22px rgba(0,0,0,.9)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--purple) 0%,#4C1D95 100%);
  color:#fff;font-weight:800;font-size:18px;line-height:1;
  box-shadow:0 10px 24px -10px rgba(124,58,237,.95),inset 0 0 0 1px rgba(255,255,255,.14);
}
.logo-text{font-weight:800;font-size:17px;letter-spacing:.01em;white-space:nowrap}
.logo-text em{font-style:normal;color:var(--lime)}
.nav-links{display:none;align-items:center;gap:4px}
.nav-links a{
  padding:9px 14px;border-radius:12px;font-size:15px;color:var(--text-2);
  transition:color .22s,background .22s,box-shadow .22s;white-space:nowrap;
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.06)}
.nav-links a.active{color:#fff;background:rgba(124,58,237,.2);box-shadow:inset 0 0 0 1px rgba(167,139,250,.38)}
.nav-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;cursor:pointer;
  border:1px solid var(--line);background:var(--glass);color:var(--text-2);
  transition:transform .22s,border-color .22s,color .22s;
}
.icon-btn svg{width:20px;height:20px}
.icon-btn:hover{color:#fff;border-color:rgba(167,139,250,.55);transform:translateY(-2px)}
@media(min-width:1024px){.nav-links{display:flex}}
@media(max-width:400px){.nav-cta{display:none}}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:14px;font-weight:700;font-size:15px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s,box-shadow .2s,background .2s,border-color .2s,color .2s;
  white-space:nowrap;
}
.btn svg{width:16px;height:16px;transition:transform .2s}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:12px}
.btn-primary{background:var(--lime);color:#0A1005;box-shadow:0 0 0 1px rgba(198,242,78,.35),0 10px 30px -8px rgba(198,242,78,.45)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 0 0 1px rgba(198,242,78,.5),0 16px 38px -10px rgba(198,242,78,.55)}
.btn-primary:active{transform:translateY(-1px)}
.btn-outline{background:transparent;border-color:rgba(167,139,250,.55);color:var(--purple-2)}
.btn-outline:hover{background:rgba(124,58,237,.16);color:#fff;transform:translateY(-3px)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:rgba(167,139,250,.6);transform:translateY(-3px)}
.btn-text{background:none;padding:0;color:var(--purple-2);font-weight:600;font-size:14px}
.btn-text:hover{color:var(--lime)}
.btn-text:hover svg{transform:translateX(3px)}

/* ---------- Badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.04em;line-height:1.5;
}
.badge-purple{background:rgba(124,58,237,.22);color:#C4B5FD;box-shadow:inset 0 0 0 1px rgba(167,139,250,.32)}
.badge-lime{background:rgba(198,242,78,.15);color:var(--lime);box-shadow:inset 0 0 0 1px rgba(198,242,78,.28)}
.badge-coral{background:rgba(255,107,74,.18);color:#FFB4A0;box-shadow:inset 0 0 0 1px rgba(255,107,74,.3)}
.badge-ghost{background:rgba(255,255,255,.06);color:var(--text-2);box-shadow:inset 0 0 0 1px var(--line)}

/* ---------- Article Hero ---------- */
.article-hero{position:relative;padding:30px 0 40px;border-bottom:1px solid var(--line-soft);overflow:hidden}
.article-hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(124,58,237,.22),transparent 68%);pointer-events:none;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px}
.crumb a{color:var(--text-2);transition:color .2s}
.crumb a:hover{color:var(--lime)}
.crumb span.sep{opacity:.5}
.article-head{max-width:880px}
.article-title{
  font-size:clamp(26px,4.6vw,44px);font-weight:800;letter-spacing:-.015em;line-height:1.3;color:#fff;
}
.article-lead{margin-top:16px;color:var(--text-2);font-size:16px;max-width:760px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:22px;font-size:14px;color:var(--text-2)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3)}
.meta-item{display:inline-flex;align-items:center;gap:6px}
.meta-item svg{width:15px;height:15px;color:var(--purple-2)}
.article-cover{
  margin-top:30px;border-radius:var(--r-lg);overflow:hidden;position:relative;
  aspect-ratio:16/9;border:1px solid var(--line);box-shadow:var(--shadow);background:var(--bg-2);
}
.article-cover img{width:100%;height:100%;object-fit:cover}
.article-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,20,.05) 40%,rgba(6,10,20,.65));pointer-events:none}
.cover-caption{position:absolute;left:18px;bottom:14px;z-index:2;font-size:13px;color:rgba(231,237,247,.82)}

/* ---------- Layout ---------- */
.article-layout{display:grid;grid-template-columns:1fr;gap:40px;padding:48px 0 96px}
@media(min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 320px;gap:56px;padding:64px 0 110px}
}

/* ---------- Article Body ---------- */
.article-body{max-width:760px;font-size:16px;line-height:1.9;color:#D7DFEC}
.article-body h2{font-size:26px;font-weight:700;color:#fff;margin:44px 0 16px;letter-spacing:-.01em;scroll-margin-top:100px}
.article-body h3{font-size:20px;font-weight:600;color:#fff;margin:32px 0 12px;scroll-margin-top:100px}
.article-body h4{font-size:17px;font-weight:600;color:#fff;margin:24px 0 10px}
.article-body p{margin:0 0 18px}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px}
.article-body ul{list-style:none;padding-left:0}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:13px;width:7px;height:7px;border-radius:2px;
  background:var(--lime);opacity:.85;
}
.article-body ol{list-style:decimal;color:#D7DFEC}
.article-body ol li{margin-bottom:10px}
.article-body img{border-radius:var(--r-md);margin:24px 0;border:1px solid var(--line)}
.article-body blockquote{
  margin:26px 0;padding:18px 24px;border-left:3px solid var(--purple);
  background:var(--glass);border-radius:0 var(--r-md) var(--r-md) 0;color:#C9D3E3;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{color:var(--lime);border-bottom:1px solid rgba(198,242,78,.55);transition:opacity .2s}
.article-body a:hover{opacity:.78}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;display:block;overflow-x:auto;
  border:1px solid var(--line);border-radius:var(--r-md);background:var(--glass);
}
.article-body th,.article-body td{padding:12px 16px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line-soft);white-space:nowrap}
.article-body th{color:#fff;background:rgba(124,58,237,.16);font-weight:600}
.article-body tr:nth-child(even) td{background:rgba(255,255,255,.022)}
.article-body code{background:rgba(255,255,255,.07);padding:2px 7px;border-radius:6px;font-size:14px}
.article-body hr{border:none;border-top:1px solid var(--line-soft);margin:34px 0}

/* ---------- Empty / Loading ---------- */
.empty-state{
  border:1px dashed rgba(167,139,250,.4);border-radius:var(--r-lg);background:var(--glass);
  padding:52px 24px;text-align:center;
}
.empty-icon{
  width:62px;height:62px;margin:0 auto 18px;border-radius:18px;display:grid;place-items:center;
  background:rgba(124,58,237,.18);color:var(--purple-2);box-shadow:inset 0 0 0 1px rgba(167,139,250,.3);
}
.empty-icon svg{width:28px;height:28px}
.empty-state h2{font-size:22px;color:#fff;margin-bottom:10px}
.empty-state p{color:var(--text-2);max-width:440px;margin:0 auto 22px;font-size:15px}

/* ---------- Tag Row ---------- */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:46px;padding-top:26px;border-top:1px solid var(--line-soft)}
.tag-row .tag-label{font-size:13px;color:var(--text-3);margin-right:4px}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;font-size:13px;
  color:var(--text-2);background:rgba(255,255,255,.05);border:1px solid var(--line);
  transition:color .2s,border-color .2s,transform .2s;
}
.tag:hover{color:var(--lime);border-color:rgba(198,242,78,.45);transform:translateY(-2px)}

/* ---------- Pager ---------- */
.pager{display:grid;grid-template-columns:1fr;gap:14px;margin-top:34px}
@media(min-width:640px){.pager{grid-template-columns:1fr 1fr}}
.pager a{
  display:flex;flex-direction:column;gap:6px;padding:18px 20px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);transition:transform .22s,border-color .22s,background .22s;
}
.pager a:hover{transform:translateY(-4px);border-color:rgba(167,139,250,.5);background:rgba(255,255,255,.06)}
.pager .pager-dir{font-size:12px;color:var(--text-3);letter-spacing:.06em}
.pager .pager-title{font-size:15px;font-weight:600;color:#fff}
.pager .pager-title.right{text-align:right}
.pager a.next{align-items:flex-end;text-align:right}

/* ---------- Related ---------- */
.related{margin-top:64px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:26px}
.section-head h2{font-size:26px;font-weight:700;color:#fff}
.section-head p{color:var(--text-2);font-size:14px;margin-top:6px}
.card-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:640px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.post-card{
  display:flex;flex-direction:column;border-radius:var(--r-lg);overflow:hidden;
  background:var(--glass);border:1px solid var(--line);box-shadow:var(--shadow);
  transition:transform .24s,border-color .24s,box-shadow .24s;
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(167,139,250,.45);box-shadow:0 24px 48px -20px rgba(0,0,0,.8)}
.post-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.post-card:hover .post-thumb img{transform:scale(1.06)}
.post-thumb::after{content:"";position:absolute;inset:0;background:rgba(6,10,20,.16)}
.post-thumb .badge{position:absolute;top:12px;left:12px;z-index:2}
.post-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-title{font-size:17px;font-weight:600;color:#fff;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-desc{font-size:14px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);padding-top:8px}
.post-foot svg{width:16px;height:16px;transition:transform .2s}
.post-card:hover .post-foot svg{transform:translateX(3px);color:var(--lime)}

/* ---------- Sidebar ---------- */
.article-side{display:flex;flex-direction:column;gap:22px}
@media(min-width:1024px){
  .article-side{position:sticky;top:96px;align-self:start}
}
.side-card{background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);padding:20px;box-shadow:var(--shadow)}
.side-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-title::before{content:"";width:3px;height:15px;border-radius:2px;background:var(--lime)}
.side-list li + li{margin-top:6px}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;border-radius:12px;font-size:14.5px;color:var(--text-2);
  transition:background .2s,color .2s,transform .2s;
}
.side-list a:hover{background:rgba(255,255,255,.06);color:#fff;transform:translateX(3px)}
.side-list a svg{width:15px;height:15px;opacity:.6;flex-shrink:0}
.clip-mini{display:flex;gap:12px;padding:10px;border-radius:14px;transition:background .2s,transform .2s}
.clip-mini:hover{background:rgba(255,255,255,.06);transform:translateY(-2px)}
.clip-mini img{width:74px;height:74px;border-radius:12px;object-fit:cover;flex-shrink:0}
.clip-mini .mini-body{display:flex;flex-direction:column;gap:6px;min-width:0}
.clip-mini .mini-title{font-size:14px;font-weight:600;color:#fff;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.clip-mini .mini-meta{font-size:12px;color:var(--text-3)}
.side-note{font-size:13px;color:var(--text-2);line-height:1.8}
@media(max-width:1023px){
  .article-side{order:2}
}

/* ---------- CTA Banner ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;margin:0 0 80px;
  background:linear-gradient(120deg,rgba(124,58,237,.35) 0%,rgba(11,18,32,.9) 55%,rgba(198,242,78,.14) 100%);
  border:1px solid var(--line);
}
.cta-band-inner{position:relative;z-index:2;padding:38px 26px;display:flex;flex-direction:column;gap:22px}
@media(min-width:900px){
  .cta-band-inner{flex-direction:row;align-items:center;justify-content:space-between;padding:46px 44px}
}
.cta-band h2{font-size:26px;color:#fff;margin-bottom:10px}
.cta-band p{color:#CBD6E6;font-size:15px;max-width:600px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-band::after{
  content:"";position:absolute;right:-80px;bottom:-120px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(198,242,78,.22),transparent 68%);
}

/* ---------- FAQ (compact) ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;margin-top:24px}
.faq-item{background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;transition:border-color .24s}
.faq-item[open]{border-color:rgba(167,139,250,.4)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:16px 20px;font-size:16px;font-weight:600;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .plus{
  width:26px;height:26px;flex-shrink:0;border-radius:9px;display:grid;place-items:center;
  background:rgba(124,58,237,.22);color:var(--purple-2);font-size:16px;line-height:1;
  transition:transform .28s,background .24s,color .24s;
}
.faq-item[open] summary .plus{transform:rotate(135deg);background:rgba(198,242,78,.2);color:var(--lime)}
.faq-answer{padding:0 20px 18px;color:var(--text-2);font-size:15px;line-height:1.9}

/* ---------- Back to list ---------- */
.back-row{display:flex;justify-content:center;margin-top:46px}
.back-pill{
  display:inline-flex;align-items:center;gap:9px;padding:11px 24px;border-radius:999px;
  border:1px solid var(--line);background:var(--glass);color:var(--text-2);font-size:14.5px;
  transition:transform .22s,color .22s,border-color .22s;
}
.back-pill:hover{transform:translateY(-3px);color:#fff;border-color:rgba(167,139,250,.55)}
.back-pill svg{width:16px;height:16px}

/* ---------- Sticky bar / float ---------- */
.sticky-buy{
  position:fixed;left:0;right:0;bottom:56px;z-index:70;
  padding:10px 14px calc(10px + env(safe-area-inset-bottom));
  background:rgba(6,10,20,.94);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  display:flex;align-items:center;gap:12px;
  transform:translateY(150%);transition:transform .34s ease;
}
.sticky-buy.show{transform:translateY(0)}
.sticky-buy .sb-thumb{width:44px;height:44px;border-radius:12px;object-fit:cover;flex-shrink:0}
.sticky-buy .sb-text{flex:1;min-width:0}
.sticky-buy .sb-text strong{display:block;font-size:14px;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sticky-buy .sb-text span{font-size:12px;color:var(--text-3)}
.float-buy{
  position:fixed;right:32px;bottom:32px;z-index:70;display:none;
  box-shadow:0 0 0 1px rgba(198,242,78,.35),0 16px 40px -12px rgba(198,242,78,.5);
  opacity:0;transform:translateY(20px);transition:opacity .3s,transform .3s;
}
.float-buy.show{opacity:1;transform:translateY(0)}
@media(min-width:1024px){
  .sticky-buy{display:none}
  .float-buy{display:inline-flex}
}

/* ---------- Mobile Tab Bar ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:75;
  height:56px;display:flex;align-items:stretch;
  background:rgba(4,7,14,.96);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line-soft);
  padding-bottom:env(safe-area-inset-bottom);
}
.tabbar a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--text-3);position:relative;transition:color .2s;
}
.tabbar a svg{width:20px;height:20px}
.tabbar a.active{color:var(--lime)}
.tabbar a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;background:var(--lime);
}
@media(min-width:1024px){.tabbar{display:none}}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--bg-3);border-top:1px solid var(--line-soft);
  padding:56px 0 28px;margin-top:0;position:relative;z-index:1;
}
@media(max-width:1023px){.site-footer{padding-bottom:96px}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}}
.footer-brand p{color:var(--text-2);font-size:14.5px;line-height:1.9;margin:16px 0 18px;max-width:420px}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-links li + li{margin-top:10px}
.footer-links a{font-size:14.5px;color:var(--text-2);transition:color .2s,transform .2s;display:inline-block}
.footer-links a:hover{color:var(--lime);transform:translateX(3px)}
.footer-bottom{
  margin-top:42px;padding-top:22px;border-top:1px solid var(--line-soft);
  display:flex;flex-direction:column;gap:8px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
@media(min-width:768px){.footer-bottom{flex-direction:row;align-items:center}}

/* roulang page: category2 */
:root{
  --bg:#060A14;
  --panel:#0B1220;
  --panel-deep:#04070E;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.07);
  --purple:#7C3AED;
  --purple-light:#A78BFA;
  --lime:#C6F24E;
  --coral:#FF6B4A;
  --ok:#34D399;
  --warn:#FBBF24;
  --err:#FB7185;
  --text:#E7EDF7;
  --muted:#94A3B8;
  --dim:#64748B;
  --line:rgba(255,255,255,.10);
  --line-soft:rgba(255,255,255,.06);
  --r-xl:24px;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:14px;
  --r-xs:12px;
  --shadow:0 18px 40px -18px rgba(0,0,0,.65);
  --glow-lime:0 0 0 1px rgba(198,242,78,.35),0 10px 30px -8px rgba(198,242,78,.45);
  --font:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
  padding-bottom:72px;
}
body::before,body::after{
  content:"";position:fixed;pointer-events:none;z-index:0;border-radius:50%;
}
body::before{
  width:620px;height:620px;left:-220px;top:-240px;
  background:radial-gradient(circle,rgba(124,58,237,.18),rgba(124,58,237,0) 68%);
}
body::after{
  width:560px;height:560px;right:-220px;bottom:-200px;
  background:radial-gradient(circle,rgba(198,242,78,.10),rgba(198,242,78,0) 70%);
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
svg{width:1em;height:1em;display:block;}
:focus-visible{outline:2px solid var(--purple-light);outline-offset:2px;border-radius:8px;}
.container{
  width:100%;max-width:1200px;margin:0 auto;padding:0 16px;position:relative;z-index:1;
}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,10,20,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.scrolled{
  background:rgba(6,10,20,.92);
  border-bottom-color:var(--line-soft);
  box-shadow:0 12px 30px -22px rgba(0,0,0,.9);
}
.nav{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:66px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--purple),#4C1D95 70%);
  color:#fff;font-weight:800;font-size:17px;
  box-shadow:0 10px 24px -12px rgba(124,58,237,.9),inset 0 1px 0 rgba(255,255,255,.25);
}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.02em;white-space:nowrap;}
.logo-text em{color:var(--lime);font-style:normal;}
.nav-links{display:none;align-items:center;gap:4px;}
.nav-links a{
  position:relative;padding:9px 12px;border-radius:10px;font-size:14.5px;color:var(--muted);
  transition:color .2s ease,background .2s ease;
}
.nav-links a:hover{color:var(--text);background:var(--glass);}
.nav-links a.active{color:var(--text);background:var(--glass);}
.nav-links a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--lime),var(--purple-light));
}
.nav-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line);background:var(--glass);color:var(--muted);font-size:18px;
  transition:color .2s ease,border-color .2s ease,transform .2s ease,background .2s ease;
}
.icon-btn:hover{color:var(--text);border-color:rgba(167,139,250,.45);transform:translateY(-2px);background:var(--glass-strong);}
.icon-btn:active{transform:translateY(0);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:14px;font-weight:600;font-size:15px;line-height:1;
  padding:13px 22px;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-sm{padding:10px 16px;font-size:14px;border-radius:12px;}
.btn-primary{
  background:var(--lime);color:#0A1220;box-shadow:var(--glow-lime);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(198,242,78,.5),0 16px 34px -12px rgba(198,242,78,.6);}
.btn-primary:active{transform:translateY(0);filter:saturate(.85);}
.btn-ghost{
  background:transparent;border-color:rgba(167,139,250,.5);color:var(--purple-light);
}
.btn-ghost:hover{transform:translateY(-2px);background:rgba(124,58,237,.14);color:#D8CCFF;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--lime);font-weight:600;font-size:14.5px;
}
.btn-link svg{transition:transform .2s ease;}
.btn-link:hover svg{transform:translateX(3px);}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:5px;
  padding:4px 10px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.04em;
  border:1px solid var(--line);background:var(--glass);color:var(--muted);white-space:nowrap;
}
.badge-purple{background:rgba(124,58,237,.18);border-color:rgba(167,139,250,.35);color:#D6C7FF;}
.badge-lime{background:rgba(198,242,78,.14);border-color:rgba(198,242,78,.35);color:var(--lime);}
.badge-coral{background:rgba(255,107,74,.16);border-color:rgba(255,107,74,.38);color:#FFB9A6;}
.badge-ghost{color:var(--dim);}

/* ---------- page banner ---------- */
.page-banner{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line-soft);
}
.page-banner__bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  opacity:.42;filter:saturate(1.05);
}
.page-banner__mask{
  position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(6,10,20,.55) 0%,rgba(6,10,20,.88) 62%,var(--bg) 100%),
    linear-gradient(100deg,rgba(6,10,20,.92) 0%,rgba(6,10,20,.35) 60%,rgba(6,10,20,.8) 100%);
}
.page-banner__inner{position:relative;z-index:1;padding:34px 0 46px;}
.page-banner__glow{
  position:absolute;width:420px;height:420px;right:-120px;top:-180px;border-radius:50%;
  background:radial-gradient(circle,rgba(198,242,78,.16),rgba(198,242,78,0) 70%);pointer-events:none;
}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13.5px;color:var(--muted);margin-bottom:18px;
}
.breadcrumb a{color:var(--muted);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--lime);}
.breadcrumb span.sep{color:var(--dim);}
.breadcrumb .current{color:var(--text);font-weight:600;}
.page-banner h1{
  font-size:30px;line-height:1.3;font-weight:800;letter-spacing:.01em;max-width:760px;
}
.page-banner h1 mark{
  background:none;color:var(--lime);
  border-bottom:3px solid rgba(198,242,78,.45);padding-bottom:2px;
}
.page-banner__lead{
  margin-top:14px;max-width:700px;color:var(--muted);font-size:15.5px;line-height:1.9;
}
.banner-stats{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;
}
.banner-stat{
  flex:1 1 130px;min-width:130px;
  border:1px solid var(--line);background:var(--glass);border-radius:var(--r-md);
  padding:12px 16px;box-shadow:var(--shadow);
  transition:transform .2s ease,border-color .2s ease;
}
.banner-stat:hover{transform:translateY(-4px);border-color:rgba(167,139,250,.4);}
.banner-stat b{display:block;font-size:21px;font-weight:800;color:var(--lime);}
.banner-stat span{font-size:12.5px;color:var(--dim);letter-spacing:.03em;}

/* ---------- section shell ---------- */
.section{padding:48px 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:18px;
  margin-bottom:24px;flex-wrap:wrap;
}
.section-head h2{font-size:24px;font-weight:700;line-height:1.4;}
.section-head p{color:var(--muted);font-size:14.5px;margin-top:8px;max-width:640px;}
.section-head .head-right{display:flex;align-items:center;gap:12px;}

/* ---------- filter chips ---------- */
.chip-bar{
  display:flex;gap:10px;overflow-x:auto;padding:2px 0 10px;
  scrollbar-width:none;
}
.chip-bar::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;padding:9px 16px;border-radius:999px;font-size:13.5px;font-weight:600;
  border:1px solid var(--line);background:var(--glass);color:var(--muted);
  transition:color .2s ease,border-color .2s ease,background .2s ease,transform .2s ease;
}
.chip:hover{color:var(--text);border-color:rgba(167,139,250,.45);transform:translateY(-2px);}
.chip.is-active{
  background:rgba(198,242,78,.14);border-color:rgba(198,242,78,.45);color:var(--lime);
}
.chip-note{font-size:13px;color:var(--dim);}

/* ---------- clip wall ---------- */
.clip-wall{
  display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;
  margin:0 -16px;padding:4px 16px 14px;
  scrollbar-width:thin;
}
.clip-wall::-webkit-scrollbar{height:6px;}
.clip-wall::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:6px;}
.clip-card{
  flex:0 0 62%;scroll-snap-align:start;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow);
  transition:transform .25s ease,border-color .25s ease,background .25s ease;
}
.clip-card:hover{transform:translateY(-4px);border-color:rgba(167,139,250,.45);background:var(--glass-strong);}
.clip-thumb{
  position:relative;aspect-ratio:9/16;overflow:hidden;background:#0E1526;
}
.clip-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.clip-card:hover .clip-thumb img{transform:scale(1.04);}
.clip-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,20,.15) 0%,rgba(6,10,20,.05) 45%,rgba(6,10,20,.72) 100%);
}
.clip-tag-lt,.clip-tag-rt{
  position:absolute;top:10px;z-index:2;
}
.clip-tag-lt{left:10px;}
.clip-tag-rt{right:10px;}
.clip-play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:2;
  width:48px;height:48px;border-radius:50%;display:grid;place-items:center;
  background:rgba(6,10,20,.55);border:1px solid rgba(198,242,78,.5);color:var(--lime);
  backdrop-filter:blur(6px);font-size:20px;
  transition:background .25s ease,transform .25s ease;
}
.clip-card:hover .clip-play{background:rgba(198,242,78,.9);color:#0A1220;transform:translate(-50%,-50%) scale(1.06);}
.clip-body{padding:16px;}
.clip-body h3{
  font-size:15.5px;font-weight:600;line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  min-height:49px;
}
.clip-meta{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:12px;padding-top:12px;border-top:1px solid var(--line-soft);
  font-size:12.5px;color:var(--dim);
}
.clip-icons{display:flex;align-items:center;gap:10px;}
.clip-icons span{display:inline-flex;align-items:center;gap:4px;}
.clip-icons svg{font-size:15px;}

/* ---------- info cards ---------- */
.info-grid{display:grid;gap:16px;}
.info-card{
  border:1px solid var(--line);background:var(--glass);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--shadow);
  transition:transform .25s ease,border-color .25s ease;
}
.info-card:hover{transform:translateY(-4px);border-color:rgba(167,139,250,.4);}
.info-card .ico{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;
  background:rgba(124,58,237,.2);border:1px solid rgba(167,139,250,.35);
  color:var(--purple-light);font-size:20px;margin-bottom:14px;
}
.info-card h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.info-card p{color:var(--muted);font-size:14.5px;line-height:1.85;}
.info-card ul{margin-top:10px;display:grid;gap:6px;}
.info-card li{
  position:relative;padding-left:16px;color:var(--muted);font-size:14px;
}
.info-card li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--lime);
}

/* ---------- steps timeline ---------- */
.steps{
  position:relative;display:grid;gap:24px;margin-top:6px;
}
.step{
  position:relative;display:grid;grid-template-columns:56px 1fr;gap:16px;align-items:start;
  padding:18px;border:1px solid var(--line);background:var(--glass);border-radius:var(--r-lg);
  transition:transform .25s ease,border-color .25s ease;
}
.step:hover{transform:translateX(4px);border-color:rgba(198,242,78,.4);}
.step-num{
  font-size:34px;font-weight:800;line-height:1;letter-spacing:-.02em;
  color:transparent;-webkit-text-stroke:1.4px rgba(198,242,78,.6);
}
.step h3{font-size:17px;font-weight:700;margin-bottom:6px;}
.step p{color:var(--muted);font-size:14.5px;}
.rule{height:1px;background:var(--line-soft);border:0;margin:0;}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:14px;}
.faq-item{
  border:1px solid var(--line);background:var(--glass);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .25s ease,background .25s ease;
}
.faq-item[open]{background:rgba(255,255,255,.06);border-color:rgba(167,139,250,.4);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:15.5px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .plus{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--lime);font-size:17px;line-height:1;
  transition:transform .3s ease,background .3s ease;
}
.faq-item[open] summary .plus{transform:rotate(45deg);background:rgba(198,242,78,.15);}
.faq-item .faq-body{
  padding:0 20px 20px;color:var(--muted);font-size:14.5px;line-height:1.9;
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border:1px solid rgba(198,242,78,.24);
  background:linear-gradient(120deg,rgba(124,58,237,.24),rgba(11,18,32,.9) 60%);
  border-radius:var(--r-xl);padding:28px 22px;box-shadow:var(--shadow);
  display:flex;flex-direction:column;gap:20px;
}
.cta-band::after{
  content:"";position:absolute;width:320px;height:320px;right:-100px;bottom:-140px;border-radius:50%;
  background:radial-gradient(circle,rgba(198,242,78,.2),rgba(198,242,78,0) 70%);
}
.cta-band h2{font-size:22px;font-weight:800;line-height:1.4;position:relative;z-index:1;}
.cta-band p{color:var(--muted);font-size:14.5px;margin-top:8px;max-width:600px;position:relative;z-index:1;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--panel-deep);border-top:1px solid var(--line-soft);
  margin-top:40px;padding:44px 0 26px;position:relative;z-index:1;
}
.footer-grid{display:grid;gap:30px;}
.footer-brand p{color:var(--muted);font-size:14px;margin-top:14px;max-width:400px;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.footer-title{font-size:14px;font-weight:700;letter-spacing:.04em;color:var(--text);margin-bottom:14px;}
.footer-links{display:grid;gap:10px;}
.footer-links a{color:var(--muted);font-size:14px;transition:color .2s ease,padding-left .2s ease;}
.footer-links a:hover{color:var(--lime);padding-left:4px;}
.footer-bottom{
  margin-top:32px;padding-top:18px;border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  color:var(--dim);font-size:12.5px;
}

/* ---------- mobile tabbar ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  display:flex;align-items:stretch;
  background:rgba(6,10,20,.94);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line-soft);
  padding-bottom:env(safe-area-inset-bottom);
}
.tabbar a{
  flex:1;min-height:56px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--dim);position:relative;transition:color .2s ease;
}
.tabbar a svg{font-size:19px;}
.tabbar a.active{color:var(--lime);}
.tabbar a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;background:var(--lime);
}
.tabbar a:active{filter:saturate(.8);}

/* ---------- responsive ---------- */
@media (min-width:520px){
  .page-banner h1{font-size:34px;}
  .section{padding:56px 0;}
}
@media (min-width:768px){
  .container{padding:0 24px;}
  .nav{min-height:72px;}
  .page-banner__inner{padding:48px 0 60px;}
  .page-banner h1{font-size:40px;line-height:1.25;}
  .page-banner__lead{font-size:16px;}
  .section{padding:72px 0;}
  .section-head h2{font-size:28px;}
  .clip-wall{
    display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
    overflow:visible;margin:0;padding:0;gap:18px;
  }
  .clip-card{flex:none;}
  .info-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:32px 30px;}
  .cta-actions{flex:0 0 auto;}
}
@media (min-width:1024px){
  .container{padding:0 32px;}
  .nav-links{display:flex;}
  .page-banner__inner{padding:58px 0 72px;}
  .page-banner h1{font-size:46px;}
  .clip-wall{grid-template-columns:repeat(4,minmax(0,1fr));}
  .section{padding:88px 0;}
  .section-head h2{font-size:34px;}
  .steps{grid-template-columns:repeat(1,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;}
  .tabbar{display:none;}
  body{padding-bottom:0;}
}
@media (min-width:1280px){
  .container{max-width:1200px;}
}
@media (max-width:479px){
  .banner-stat{flex:1 1 calc(50% - 6px);min-width:0;}
  .step{grid-template-columns:44px 1fr;padding:16px;}
  .step-num{font-size:28px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category3 */
:root{
  --bg:#060A14;
  --bg-elev:#0B1220;
  --bg-deep:#04070E;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.07);
  --purple:#7C3AED;
  --purple-light:#A78BFA;
  --lime:#C6F24E;
  --coral:#FF6B4A;
  --success:#34D399;
  --warn:#FBBF24;
  --error:#FB7185;
  --text:#E7EDF7;
  --text-2:#94A3B8;
  --text-3:#64748B;
  --line:rgba(255,255,255,.10);
  --divider:rgba(255,255,255,.06);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:14px;
  --r-xs:12px;
  --r-pill:999px;
  --shadow-card:0 18px 40px -18px rgba(0,0,0,.65);
  --shadow-lime:0 0 0 1px rgba(198,242,78,.35),0 10px 30px -8px rgba(198,242,78,.45);
  --container:1200px;
  --section-gap:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:
    radial-gradient(900px 620px at 6% -8%, rgba(124,58,237,.16), transparent 62%),
    radial-gradient(780px 540px at 104% 10%, rgba(198,242,78,.07), transparent 60%),
    var(--bg);
  background-attachment:scroll;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .22s ease,opacity .22s ease}
a:hover{color:var(--purple-light)}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
input{font:inherit}
:focus-visible{outline:2px solid var(--purple-light);outline-offset:2px;border-radius:6px}
::selection{background:rgba(198,242,78,.28);color:#fff}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 16px}
@media (min-width:768px){.container{padding:0 24px}}
@media (min-width:1024px){.container{padding:0 32px}}
@media (min-width:1280px){.container{max-width:1280px}}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,20,.74);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,backdrop-filter .3s ease;
}
.site-header.is-scrolled{
  background:rgba(6,10,20,.9);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--divider);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:18px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.01em;flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--purple),#4C1D95);
  color:#fff;font-size:17px;font-weight:800;line-height:1;
  box-shadow:0 8px 22px -10px rgba(124,58,237,.9),inset 0 0 0 1px rgba(255,255,255,.16);
}
.logo-text{font-size:17px;color:var(--text);white-space:nowrap}
.logo-text em{font-style:normal;color:var(--lime)}
.nav-links{display:none;align-items:center;gap:4px}
.nav-links a{
  position:relative;padding:9px 13px;border-radius:var(--r-xs);
  font-size:14.5px;font-weight:500;color:var(--text-2);white-space:nowrap;
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-links a.active{color:var(--text);font-weight:600}
.nav-links a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--lime),var(--purple-light));
}
.nav-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line);background:var(--glass);color:var(--text-2);
  transition:.22s ease;
}
.icon-btn svg{width:19px;height:19px}
.icon-btn:hover{color:var(--text);border-color:rgba(167,139,250,.45);transform:translateY(-2px)}
.nav-cta{display:none}
@media (min-width:1024px){
  .nav{height:76px}
  .nav-links{display:flex}
  .nav-cta{display:inline-flex}
}

/* ---------- buttons / badges ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  border:1px solid transparent;cursor:pointer;
}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:var(--r-xs)}
.btn-primary{background:var(--lime);color:#0A1305;box-shadow:var(--shadow-lime)}
.btn-primary:hover{background:#D4F96A;color:#0A1305;transform:translateY(-4px)}
.btn-primary:active{transform:translateY(-1px);background:#B7E23F}
.btn-outline{background:transparent;border-color:rgba(167,139,250,.5);color:var(--text)}
.btn-outline:hover{border-color:var(--purple-light);background:rgba(124,58,237,.14);color:var(--text);transform:translateY(-4px)}
.btn-ghost{padding:10px 4px;color:var(--purple-light);font-weight:600;gap:6px}
.btn-ghost svg{width:16px;height:16px;transition:transform .22s ease}
.btn-ghost:hover{color:var(--lime)}
.btn-ghost:hover svg{transform:translateX(3px)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.04em;line-height:1.35;
  border:1px solid transparent;
}
.badge-purple{background:rgba(124,58,237,.18);color:#C4B5FD;border-color:rgba(124,58,237,.4)}
.badge-lime{background:rgba(198,242,78,.14);color:#D8FB84;border-color:rgba(198,242,78,.34)}
.badge-coral{background:rgba(255,107,74,.16);color:#FFB09A;border-color:rgba(255,107,74,.36)}
.badge-ghost{background:rgba(255,255,255,.05);color:var(--text-2);border-color:var(--line)}
.badge-success{background:rgba(52,211,153,.14);color:#7EE8BE;border-color:rgba(52,211,153,.34)}

/* ---------- page hero ---------- */
.page-hero{position:relative;overflow:hidden;padding:112px 0 56px;border-bottom:1px solid var(--divider)}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.9;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(6,10,20,.72) 0%,rgba(6,10,20,.86) 46%,rgba(6,10,20,.96) 100%),
    linear-gradient(115deg,rgba(198,242,78,.10) 0%,transparent 42%);
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:20px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--lime)}
.breadcrumb span.sep{color:var(--text-3)}
.page-hero h1{
  font-size:30px;line-height:1.3;font-weight:800;letter-spacing:-.01em;
  max-width:880px;margin-bottom:18px;
}
.page-hero h1 .hl{
  color:var(--lime);
  box-shadow:inset 0 -10px 0 rgba(198,242,78,.14);
  border-bottom:2px solid rgba(198,242,78,.6);
  padding-bottom:1px;
}
.hero-sub{max-width:760px;color:var(--text-2);font-size:15.5px;line-height:1.9}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
@media (min-width:768px){
  .page-hero{padding:140px 0 70px}
  .page-hero h1{font-size:40px}
  .hero-sub{font-size:17px}
}
@media (min-width:1024px){
  .page-hero h1{font-size:48px;line-height:1.18}
}

/* ---------- section base ---------- */
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:88px 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.section-head h2{font-size:24px;line-height:1.35;font-weight:700;letter-spacing:-.01em}
.section-head p{color:var(--text-2);font-size:14.5px;max-width:760px;margin-top:8px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--purple-light);text-transform:uppercase;margin-bottom:12px}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--lime)}
@media (min-width:768px){.section-head h2{font-size:30px}}
@media (min-width:1024px){.section-head h2{font-size:34px}}

/* ---------- category tabs ---------- */
.cat-tabs-wrap{margin-top:-26px;position:relative;z-index:5}
.cat-tabs{
  display:flex;gap:8px;overflow-x:auto;padding:7px;
  border:1px solid var(--line);background:rgba(11,18,32,.92);
  backdrop-filter:blur(12px);border-radius:var(--r-pill);
  scrollbar-width:none;
}
.cat-tabs::-webkit-scrollbar{display:none}
.cat-tab{
  flex:0 0 auto;padding:10px 18px;border-radius:var(--r-pill);
  font-size:14px;font-weight:600;color:var(--text-2);white-space:nowrap;transition:.25s ease;
}
.cat-tab:hover{color:var(--text);background:rgba(255,255,255,.06)}
.cat-tab.is-active{background:var(--lime);color:#0A1305;box-shadow:var(--shadow-lime)}

/* ---------- timeline ---------- */
.timeline{position:relative;max-width:940px}
.tl-item{
  position:relative;display:grid;grid-template-columns:64px 1fr;gap:16px;
  padding-bottom:26px;
}
.tl-item::before{
  content:"";position:absolute;left:31px;top:60px;bottom:-4px;width:1px;
  border-left:1px dashed rgba(255,255,255,.16);
}
.tl-item:last-child{padding-bottom:0}
.tl-item:last-child::before{display:none}
.tl-index{
  font-size:34px;font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1.4px rgba(167,139,250,.8);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
  padding-top:4px;
}
.tl-card{
  border:1px solid var(--line);background:var(--glass);border-radius:var(--r-md);
  padding:18px 20px;box-shadow:var(--shadow-card);
  transition:transform .25s ease,border-color .25s ease,background .25s ease;
}
.tl-card:hover{transform:translateY(-4px);border-color:rgba(167,139,250,.4);background:var(--glass-strong)}
.tl-card h3{font-size:18px;font-weight:600;line-height:1.45;margin-bottom:8px}
.tl-card p{color:var(--text-2);font-size:14.5px;line-height:1.85}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
@media (min-width:768px){
  .tl-item{grid-template-columns:96px 1fr;gap:24px;padding-bottom:34px}
  .tl-item::before{left:47px;top:74px}
  .tl-index{font-size:48px}
  .tl-card{padding:24px 28px}
  .tl-card h3{font-size:21px}
  .tl-card p{font-size:15.5px}
}

/* ---------- points grid ---------- */
.points-grid{display:grid;gap:16px;grid-template-columns:1fr}
@media (min-width:768px){.points-grid{grid-template-columns:repeat(2,1fr);gap:20px}}
@media (min-width:1024px){.points-grid{grid-template-columns:repeat(4,1fr)}}
.point-card{
  border:1px solid var(--line);background:var(--glass);border-radius:var(--r-lg);
  padding:22px 20px;box-shadow:var(--shadow-card);
  transition:transform .25s ease,border-color .25s ease,background .25s ease;
}
.point-card:hover{transform:translateY(-4px);border-color:rgba(167,139,250,.4);background:var(--glass-strong)}
.point-icon{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;
  background:rgba(124,58,237,.16);border:1px solid rgba(124,58,237,.35);
  color:var(--purple-light);margin-bottom:16px;
}
.point-icon svg{width:20px;height:20px}
.point-card h3{font-size:17px;font-weight:600;margin-bottom:8px;line-height:1.5}
.point-card p{color:var(--text-2);font-size:14.5px;line-height:1.85}

/* ---------- info two column ---------- */
.info-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media (min-width:900px){.info-grid{grid-template-columns:repeat(2,1fr)}}
.info-card{
  border:1px solid var(--line);background:var(--glass);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .25s ease,border-color .25s ease;
}
.info-card:hover{transform:translateY(-4px);border-color:rgba(198,242,78,.35)}
.info-media{position:relative;aspect-ratio:16/9;overflow:hidden}
.info-media img{width:100%;height:100%;object-fit:cover}
.info-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,20,.08),rgba(6,10,20,.72))}
.info-media .badge{position:absolute;left:14px;top:14px;z-index:2}
.info-body{padding:22px 22px 26px}
.info-body h3{font-size:19px;font-weight:600;margin-bottom:10px;line-height:1.5}
.info-body p{color:var(--text-2);font-size:14.5px;line-height:1.85}
.mini-list{margin-top:16px;display:grid;gap:10px}
.mini-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--text-2);line-height:1.75}
.mini-list li::before{
  content:"";width:6px;height:6px;border-radius:50%;flex:0 0 auto;margin-top:9px;
  background:var(--lime);box-shadow:0 0 0 3px rgba(198,242,78,.14);
}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px;max-width:900px}
.faq-item{
  border:1px solid var(--line);background:var(--glass);border-radius:var(--r-md);
  overflow:hidden;transition:background .25s ease,border-color .25s ease;
}
.faq-item[open]{background:var(--glass-strong);border-color:rgba(167,139,250,.36)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;line-height:1.6;cursor:pointer;
  list-style:none;
}
.faq-q::-webkit-details-marker{display:none}
.faq-q::after{
  content:"+";flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;font-size:18px;font-weight:400;line-height:1;
  color:var(--purple-light);border:1px solid rgba(167,139,250,.4);
  transition:transform .28s ease,color .28s ease,border-color .28s ease;
}
.faq-item[open] .faq-q::after{transform:rotate(45deg);color:var(--lime);border-color:rgba(198,242,78,.5)}
.faq-a{padding:0 20px 20px;color:var(--text-2);font-size:14.5px;line-height:1.9;max-width:760px}
@media (min-width:768px){
  .faq-q{padding:22px 24px;font-size:17px}
  .faq-a{padding:0 24px 24px;font-size:15.5px}
}

/* ---------- CTA ---------- */
.cta-banner{
  position:relative;overflow:hidden;
  border:1px solid rgba(198,242,78,.24);
  background:
    radial-gradient(520px 320px at 12% 0%, rgba(124,58,237,.3), transparent 65%),
    radial-gradient(420px 260px at 92% 110%, rgba(198,242,78,.14), transparent 62%),
    var(--bg-elev);
  border-radius:var(--r-lg);
  padding:30px 22px;
  display:grid;gap:22px;
  box-shadow:var(--shadow-card);
}
.cta-banner h2{font-size:23px;font-weight:700;line-height:1.4;margin-bottom:10px}
.cta-banner p{color:var(--text-2);font-size:14.5px;max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media (min-width:900px){
  .cta-banner{grid-template-columns:1fr auto;align-items:center;padding:44px 48px;gap:32px}
  .cta-banner h2{font-size:30px}
  .cta-banner p{font-size:16px}
}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--divider);padding:52px 0 26px;margin-top:24px}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}}
.footer-brand p{color:var(--text-2);font-size:14.5px;line-height:1.9;margin-top:16px;max-width:420px}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.footer-title{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--text)}
.footer-links{display:grid;gap:11px}
.footer-links a{color:var(--text-2);font-size:14.5px}
.footer-links a:hover{color:var(--lime)}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid var(--divider);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  color:var(--text-3);font-size:13.5px;
  font-variant-numeric:tabular-nums;
}

/* ---------- mobile tabbar ---------- */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:grid;grid-template-columns:repeat(5,1fr);
  background:rgba(4,7,14,.94);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-top:1px solid var(--divider);
  padding-bottom:env(safe-area-inset-bottom,0);
}
.mobile-tabbar a{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;height:56px;font-size:11px;color:var(--text-3);letter-spacing:.02em;
}
.mobile-tabbar svg{width:20px;height:20px}
.mobile-tabbar a.is-active{color:var(--lime)}
.mobile-tabbar a.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;background:var(--lime);
}
@media (max-width:1023px){body{padding-bottom:64px}}
@media (min-width:1024px){.mobile-tabbar{display:none}}

/* ---------- misc ---------- */
.divider-line{height:1px;background:var(--divider);border:0;margin:0}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}
.section-note{color:var(--text-3);font-size:13.5px;margin-top:18px}

/* roulang page: category4 */
:root{
  --bg:#060A14;
  --panel:#0B1220;
  --panel-2:#0F1728;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.07);
  --footer-bg:#04070E;
  --purple:#7C3AED;
  --purple-light:#A78BFA;
  --lime:#C6F24E;
  --coral:#FF6B4A;
  --ok:#34D399;
  --warn:#FBBF24;
  --err:#FB7185;
  --text:#E7EDF7;
  --text-2:#94A3B8;
  --text-3:#64748B;
  --line:rgba(255,255,255,.10);
  --line-soft:rgba(255,255,255,.06);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:14px;
  --r-xs:12px;
  --shadow-card:0 18px 40px -18px rgba(0,0,0,.65);
  --shadow-lime:0 0 0 1px rgba(198,242,78,.35),0 10px 30px -8px rgba(198,242,78,.45);
  --shadow-purple:0 12px 34px -14px rgba(124,58,237,.65);
  --container:1200px;
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --font-num:"Inter","HarmonyOS Sans SC","PingFang SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  padding-bottom:calc(56px + env(safe-area-inset-bottom));
}
body::before,
body::after{
  content:"";
  position:fixed;
  z-index:0;
  pointer-events:none;
  border-radius:50%;
  filter:blur(10px);
}
body::before{
  top:-180px;left:-160px;width:560px;height:560px;
  background:radial-gradient(circle,rgba(124,58,237,.22),rgba(124,58,237,0) 68%);
}
body::after{
  bottom:-220px;right:-180px;width:600px;height:600px;
  background:radial-gradient(circle,rgba(198,242,78,.14),rgba(198,242,78,0) 70%);
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
svg{display:block;}
:focus-visible{outline:2px solid var(--purple-light);outline-offset:2px;border-radius:6px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 16px;
  position:relative;
  z-index:1;
}
.section{padding:48px 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:16px;margin-bottom:24px;flex-wrap:wrap;
}
.section-title{font-size:24px;line-height:1.4;font-weight:700;letter-spacing:.01em;}
.section-title small{display:block;font-size:14px;font-weight:400;color:var(--text-2);margin-top:6px;letter-spacing:0;}
.more-link{font-size:14px;color:var(--purple-light);display:inline-flex;align-items:center;gap:6px;transition:color .2s,transform .2s;}
.more-link:hover{color:var(--lime);transform:translateX(2px);}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,20,.72);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:background .25s,border-color .25s,box-shadow .25s;
}
.site-header.is-scrolled{
  background:rgba(6,10,20,.9);
  border-bottom-color:var(--line-soft);
  box-shadow:0 12px 30px -22px rgba(0,0,0,.9);
}
.nav{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;height:64px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--purple),#5B21B6);
  color:#fff;font-weight:800;font-size:17px;
  box-shadow:var(--shadow-purple);
}
.logo-text{font-size:16px;font-weight:700;letter-spacing:.02em;color:var(--text);}
.logo-text em{font-style:normal;color:var(--lime);}
.nav-links{display:none;align-items:center;gap:6px;}
.nav-links a{
  font-size:14px;color:var(--text-2);
  padding:8px 12px;border-radius:10px;
  position:relative;transition:color .2s,background .2s;
}
.nav-links a:hover{color:var(--text);background:var(--glass);}
.nav-links a.active{color:var(--text);font-weight:600;}
.nav-links a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--lime);
}
.nav-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:36px;height:36px;border-radius:11px;
  display:grid;place-items:center;
  border:1px solid var(--line);
  background:var(--glass);color:var(--text-2);
  transition:color .2s,border-color .2s,background .2s,transform .2s;
}
.icon-btn svg{width:18px;height:18px;}
.icon-btn:hover{color:var(--lime);border-color:rgba(198,242,78,.35);background:var(--glass-strong);transform:translateY(-1px);}
.icon-btn:active{transform:translateY(1px);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:transform .2s,box-shadow .2s,background .2s,color .2s,border-color .2s,opacity .2s;
  white-space:nowrap;
}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:12px;}
.btn-primary{
  background:var(--lime);color:#0A1220;
  box-shadow:var(--shadow-lime);
}
.btn-primary:hover{transform:translateY(-2px);background:#D4FA63;}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(198,242,78,.25);}
.btn-ghost{
  border:1px solid var(--line);color:var(--text);
  background:var(--glass);
}
.btn-ghost:hover{border-color:rgba(167,139,250,.55);transform:translateY(-2px);background:var(--glass-strong);}
.btn-outline{
  border:1px solid rgba(167,139,250,.5);color:var(--purple-light);background:transparent;
}
.btn-outline:hover{background:rgba(124,58,237,.14);color:#DDD6FE;transform:translateY(-2px);}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;pointer-events:none;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--lime);font-size:14px;font-weight:600;}
.link-arrow svg{width:15px;height:15px;transition:transform .2s;}
.link-arrow:hover svg{transform:translateX(3px);}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:5px;
  padding:4px 10px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.04em;line-height:1.35;
  border:1px solid transparent;white-space:nowrap;
}
.badge-purple{background:rgba(124,58,237,.18);color:#C4B5FD;border-color:rgba(124,58,237,.4);}
.badge-lime{background:rgba(198,242,78,.14);color:var(--lime);border-color:rgba(198,242,78,.35);}
.badge-coral{background:rgba(255,107,74,.16);color:#FFB9A6;border-color:rgba(255,107,74,.38);}
.badge-ghost{background:var(--glass);color:var(--text-2);border-color:var(--line);}
.badge-ok{background:rgba(52,211,153,.14);color:#6EE7B7;border-color:rgba(52,211,153,.34);}

/* ============ 页头横幅 ============ */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line-soft);}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  transform:scale(1.04);
}
.page-hero .hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,20,.72),rgba(6,10,20,.94) 78%,var(--bg));
}
.page-hero::before{
  content:"";position:absolute;top:-40%;left:55%;width:520px;height:520px;
  background:radial-gradient(circle,rgba(124,58,237,.28),transparent 68%);
  transform:rotate(18deg);pointer-events:none;
}
.hero-inner{position:relative;padding:36px 0 44px;}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:18px;flex-wrap:wrap;
}
.breadcrumb a{color:var(--text-2);transition:color .2s;}
.breadcrumb a:hover{color:var(--lime);}
.breadcrumb .current{color:var(--text);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--lime);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--lime);}
.page-hero h1{
  font-size:30px;line-height:1.35;font-weight:800;letter-spacing:.01em;
  max-width:820px;margin-bottom:14px;
}
.page-hero h1 .hl{
  color:var(--lime);
  box-shadow:inset 0 -10px 0 rgba(198,242,78,.14);
}
.hero-desc{
  max-width:760px;color:var(--text-2);font-size:15.5px;line-height:1.9;
}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-points li{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 13px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);
  font-size:13px;color:var(--text-2);
}
.hero-points li strong{color:var(--text);font-family:var(--font-num);font-variant-numeric:tabular-nums;}
.dot{width:6px;height:6px;border-radius:50%;background:var(--purple-light);flex-shrink:0;}

/* ============ 分类 Tab ============ */
.cat-tabs-wrap{
  position:sticky;top:64px;z-index:50;
  background:rgba(8,13,26,.88);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
}
.cat-tabs{
  display:flex;gap:8px;overflow-x:auto;
  padding:12px 0;scrollbar-width:none;
}
.cat-tabs::-webkit-scrollbar{display:none;}
.cat-tabs a{
  flex:0 0 auto;
  padding:9px 16px;border-radius:999px;
  font-size:14px;color:var(--text-2);
  border:1px solid var(--line);background:var(--glass);
  transition:color .2s,border-color .2s,background .2s,transform .2s;
}
.cat-tabs a:hover{color:var(--text);border-color:rgba(167,139,250,.5);transform:translateY(-2px);}
.cat-tabs a.active{
  color:#0A1220;background:var(--lime);border-color:var(--lime);font-weight:700;
  box-shadow:0 8px 22px -12px rgba(198,242,78,.8);
}

/* ============ 答疑主体布局 ============ */
.faq-layout{
  display:grid;grid-template-columns:1fr;gap:28px;
  padding:44px 0 8px;
}
.faq-main-head{
  display:flex;align-items:center;justify-content:space-between;
  gap:14px;flex-wrap:wrap;margin-bottom:18px;
}
.faq-main-head h2{font-size:22px;font-weight:700;}
.faq-main-head .count{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:13px;color:var(--text-3);
}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:border-color .25s,transform .25s,background .25s;
}
.faq-item:hover{border-color:rgba(167,139,250,.32);}
.faq-item.is-open{border-color:rgba(124,58,237,.5);background:var(--glass-strong);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;gap:14px;
  padding:18px 20px;text-align:left;
  font-size:16px;font-weight:600;line-height:1.6;color:var(--text);
  transition:color .2s;
}
.faq-q:hover{color:var(--lime);}
.faq-num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:13px;font-weight:700;color:var(--purple-light);
  padding-top:3px;flex-shrink:0;
}
.faq-icon{
  margin-left:auto;flex-shrink:0;
  width:26px;height:26px;border-radius:9px;
  display:grid;place-items:center;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:var(--text-2);
  transition:transform .3s,color .25s,border-color .25s,background .25s;
}
.faq-icon svg{width:14px;height:14px;}
.faq-item.is-open .faq-icon{
  transform:rotate(135deg);color:#0A1220;background:var(--lime);border-color:var(--lime);
}
.faq-a{
  display:grid;grid-template-rows:0fr;
  transition:grid-template-rows .32s ease;
}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a-body{
  padding:0 20px 20px 50px;
  color:var(--text-2);font-size:15px;line-height:1.95;
}
.faq-a-body p + p{margin-top:10px;}
.faq-a-body .tip{
  display:block;margin-top:12px;padding:12px 14px;
  border-left:3px solid var(--purple);
  background:rgba(124,58,237,.09);
  border-radius:0 12px 12px 0;
  font-size:14px;color:#C7D2FE;line-height:1.8;
}
.faq-a-body strong{color:var(--text);}
.kw{color:var(--lime);border-bottom:1px solid rgba(198,242,78,.45);}

/* ============ 粘性摘要卡 ============ */
.faq-aside{display:flex;flex-direction:column;gap:16px;}
.sticky-wrap{position:static;}
.summary-card{
  background:linear-gradient(160deg,rgba(124,58,237,.16),rgba(255,255,255,.03) 55%);
  border:1px solid rgba(167,139,250,.28);
  border-radius:var(--r-lg);
  padding:22px;
  box-shadow:var(--shadow-card);
}
.summary-card h3{font-size:17px;font-weight:700;margin-bottom:6px;}
.summary-card .sub{font-size:13px;color:var(--text-3);margin-bottom:18px;}
.step-list{counter-reset:step;}
.step-list li{
  display:flex;gap:12px;padding:11px 0;
  border-bottom:1px dashed var(--line-soft);
  font-size:14px;color:var(--text-2);line-height:1.75;
}
.step-list li:last-child{border-bottom:0;padding-bottom:0;}
.step-list li::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:13px;font-weight:700;color:var(--lime);flex-shrink:0;padding-top:2px;
}
.step-list li strong{color:var(--text);display:block;font-size:14.5px;}
.mini-card{
  background:var(--glass);border:1px solid var(--line);
  border-radius:var(--r-md);padding:18px;box-shadow:var(--shadow-card);
}
.mini-card h4{font-size:15px;font-weight:700;margin-bottom:12px;display:flex;align-items:center;gap:8px;}
.mini-card h4 .dot{background:var(--lime);}
.jump-list{display:flex;flex-direction:column;gap:2px;}
.jump-list a{
  display:flex;align-items:center;gap:10px;
  padding:9px 4px;font-size:14px;color:var(--text-2);
  border-bottom:1px solid var(--line-soft);
  transition:color .2s,padding-left .2s;
}
.jump-list a:last-child{border-bottom:0;}
.jump-list a:hover{color:var(--lime);padding-left:8px;}
.jump-list a span{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:12px;color:var(--text-3);
}
.update-meta{
  display:flex;flex-direction:column;gap:9px;font-size:13.5px;color:var(--text-2);
}
.update-meta div{display:flex;justify-content:space-between;gap:12px;}
.update-meta b{
  color:var(--text);font-weight:600;
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
}

/* ============ 排查步骤板块 ============ */
.trouble{background:var(--panel);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);}
.trouble-grid{display:grid;grid-template-columns:1fr;gap:14px;}
.trouble-card{
  position:relative;
  background:var(--glass);border:1px solid var(--line);
  border-radius:var(--r-md);padding:22px 20px;
  box-shadow:var(--shadow-card);
  transition:transform .25s,border-color .25s,background .25s;
}
.trouble-card:hover{transform:translateY(-4px);border-color:rgba(167,139,250,.4);background:var(--glass-strong);}
.trouble-card .num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:34px;font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(167,139,250,.75);
  margin-bottom:14px;display:block;
}
.trouble-card h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.trouble-card p{font-size:14px;color:var(--text-2);line-height:1.85;}
.trouble-card .badge{margin-top:14px;}

/* ============ CTA 横幅 ============ */
.cta-band{padding:52px 0 60px;}
.cta-box{
  position:relative;overflow:hidden;
  border-radius:24px;
  border:1px solid rgba(198,242,78,.28);
  background:linear-gradient(120deg,rgba(124,58,237,.28),rgba(11,18,32,.9) 58%);
  padding:30px 22px;
  box-shadow:var(--shadow-card);
}
.cta-box::after{
  content:"";position:absolute;right:-120px;top:-120px;width:340px;height:340px;
  background:radial-gradient(circle,rgba(198,242,78,.22),transparent 68%);
  transform:rotate(20deg);pointer-events:none;
}
.cta-box h2{font-size:24px;font-weight:800;line-height:1.45;margin-bottom:12px;position:relative;}
.cta-box p{color:var(--text-2);font-size:15px;max-width:640px;position:relative;margin-bottom:22px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;}
.cta-thumbs{display:none;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--footer-bg);
  border-top:1px solid var(--line-soft);
  padding:44px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:30px;}
.footer-brand p{color:var(--text-2);font-size:14px;line-height:1.9;margin:14px 0 16px;max-width:420px;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;}
.footer-title{font-size:14px;font-weight:700;letter-spacing:.04em;margin-bottom:14px;color:var(--text);}
.footer-links{display:flex;flex-direction:column;gap:9px;}
.footer-links a{
  font-size:14px;color:var(--text-2);
  transition:color .2s,padding-left .2s;
}
.footer-links a:hover{color:var(--lime);padding-left:4px;}
.footer-bottom{
  margin-top:34px;padding:18px 0 26px;
  border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ============ 移动端底部 Tab ============ */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:grid;grid-template-columns:repeat(5,1fr);
  background:rgba(8,13,26,.96);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line-soft);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tab a{
  position:relative;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  height:56px;font-size:11px;color:var(--text-3);
  transition:color .2s;
}
.mobile-tab a svg{width:20px;height:20px;}
.mobile-tab a.active{color:var(--lime);}
.mobile-tab a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;background:var(--lime);
}
.mobile-tab a:active{transform:translateY(1px);}

/* ============ 响应式 ============ */
@media (min-width:520px){
  .container{padding:0 20px;}
  .page-hero h1{font-size:34px;}
  .section-head{margin-bottom:30px;}
  .trouble-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:repeat(2,1fr);}
  .faq-a-body{padding-left:54px;}
}
@media (min-width:768px){
  body{padding-bottom:0;}
  .mobile-tab{display:none;}
  .container{padding:0 24px;}
  .nav{height:70px;}
  .nav-links{display:flex;}
  .section{padding:64px 0;}
  .page-hero h1{font-size:40px;}
  .page-hero .hero-inner{padding:48px 0 58px;}
  .hero-desc{font-size:16px;}
  .faq-layout{grid-template-columns:1fr;gap:30px;padding:56px 0 12px;}
  .trouble-grid{grid-template-columns:repeat(2,1fr);gap:18px;}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px;}
  .cta-box{padding:40px 36px;display:flex;align-items:center;justify-content:space-between;gap:30px;}
  .cta-box .cta-copy{max-width:620px;}
  .cta-box p{margin-bottom:0;}
  .cta-actions{flex-shrink:0;}
  .cta-thumbs{display:block;position:absolute;right:36px;bottom:-14px;width:120px;opacity:.28;border-radius:14px;overflow:hidden;}
}
@media (min-width:1024px){
  .container{padding:0 32px;}
  .section{padding:88px 0;}
  .page-hero h1{font-size:44px;line-height:1.28;}
  .faq-layout{grid-template-columns:minmax(0,1fr) 336px;gap:34px;align-items:start;}
  .faq-aside .sticky-wrap{position:sticky;top:150px;}
  .trouble-grid{grid-template-columns:repeat(4,1fr);}
  .faq-q{font-size:16.5px;padding:20px 24px;}
  .faq-a-body{padding:0 24px 22px 56px;}
  .section-title{font-size:28px;}
  .footer-grid{gap:44px;}
}
@media (min-width:1280px){
  .container{max-width:1200px;}
  .page-hero h1{font-size:46px;}
}
@media (max-width:519px){
  .cat-tabs-wrap{top:64px;}
  .hero-points li{font-size:12.5px;padding:6px 11px;}
  .faq-a-body{padding-left:20px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
}