/* roulang page: index */
:root{
  --bg:#070C1C;
  --panel:#0E1730;
  --glass:rgba(255,255,255,0.055);
  --glass-2:rgba(255,255,255,0.09);
  --line:rgba(160,190,255,0.14);
  --line-soft:rgba(160,190,255,0.10);
  --cyan:#3DDCC8;
  --violet:#8C7BFF;
  --gold:#F2B457;
  --gold-grad:linear-gradient(135deg,#F7CE85 0%,#E0A23C 100%);
  --text:#E8EDF7;
  --text-2:#9AA9C4;
  --text-3:#6C7A99;
  --warn:#FF7A8A;
  --r-lg:18px;
  --r-md:16px;
  --r-sm:12px;
  --r-img:14px;
  --shadow:0 8px 30px rgba(0,0,0,.45);
  --shadow-hover:0 12px 36px rgba(0,0,0,.55),0 0 24px rgba(61,220,200,.22);
  --sp:24px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    radial-gradient(rgba(255,255,255,.11) 1px,transparent 1px),
    radial-gradient(rgba(160,190,255,.08) 1px,transparent 1px);
  background-size:180px 180px,260px 260px;
  background-position:0 0,90px 130px;
  opacity:.5;
}
body::after{
  content:"";
  position:fixed;
  inset:-20% -10% auto -10%;
  height:900px;
  pointer-events:none;
  z-index:0;
  background:radial-gradient(60% 50% at 20% 10%,rgba(61,220,200,.10),transparent 70%),
             radial-gradient(50% 45% at 85% 6%,rgba(140,123,255,.12),transparent 70%);
}
img{max-width:100%;display:block;}
a{color:var(--cyan);text-decoration:none;transition:color .16s ease,opacity .16s ease;}
a:hover{color:#6DF0DE;}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:.3px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;box-shadow:0 0 0 4px rgba(61,220,200,.22);border-radius:8px;}
.wrap{position:relative;z-index:1;}
.container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;width:100%;}
@media (min-width:1400px){.container{max-width:1280px;}}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.sec-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3;}
.sec-head h2 .dot{color:var(--cyan);}
.sec-desc{margin-top:10px;color:var(--text-2);font-size:15px;max-width:640px;}
.sec-more{font-size:14px;white-space:nowrap;color:var(--cyan);border-bottom:1px solid rgba(61,220,200,.35);padding-bottom:2px;}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12.5px;line-height:1.7;background:rgba(140,123,255,.18);color:#B9AEFF;border:1px solid rgba(140,123,255,.28);}
.badge-cyan{background:rgba(61,220,200,.14);color:#7CF0E0;border-color:rgba(61,220,200,.3);}
.badge-gold{background:rgba(242,180,87,.14);color:#F7CE85;border-color:rgba(242,180,87,.3);}

/* ---------- buttons ---------- */
.btn-gold,.btn-ghost,.btn-gold-sm,.btn-ghost-sm{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:600;border-radius:var(--r-sm);cursor:pointer;border:1px solid transparent;
  transition:transform .16s ease,box-shadow .16s ease,background-color .16s ease,border-color .16s ease,color .16s ease;
  text-align:center;
}
.btn-gold{padding:12px 26px;background:var(--gold-grad);color:#08122A;box-shadow:0 6px 20px rgba(242,180,87,.22);font-size:15.5px;}
.btn-gold:hover{color:#08122A;transform:translateY(-1px);box-shadow:0 10px 28px rgba(242,180,87,.38);}
.btn-gold:active{transform:translateY(1px);}
.btn-ghost{padding:12px 26px;background:transparent;border-color:rgba(61,220,200,.55);color:var(--cyan);font-size:15.5px;}
.btn-ghost:hover{background:rgba(61,220,200,.12);color:#6DF0DE;transform:translateY(-1px);}
.btn-gold-sm{padding:9px 18px;background:var(--gold-grad);color:#08122A;font-size:14px;box-shadow:0 4px 14px rgba(242,180,87,.2);}
.btn-gold-sm:hover{color:#08122A;transform:translateY(-1px);box-shadow:0 8px 22px rgba(242,180,87,.35);}
.btn-ghost-sm{padding:9px 18px;background:transparent;border-color:var(--line);color:var(--text);font-size:14px;}
.btn-ghost-sm:hover{border-color:rgba(61,220,200,.5);color:var(--cyan);background:rgba(61,220,200,.08);}
.btn-sky{display:inline-flex;align-items:center;gap:8px;padding:10px 22px;border-radius:999px;border:1px solid var(--line);color:var(--text-2);font-size:14px;background:var(--glass);transition:all .16s ease;}
.btn-sky:hover{color:var(--cyan);border-color:rgba(61,220,200,.45);background:rgba(61,220,200,.08);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(7,12,28,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-soft);
  transition:background-color .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{background:rgba(7,12,28,.94);box-shadow:0 8px 28px rgba(0,0,0,.5);}
.nav-inner{display:flex;align-items:center;gap:22px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{width:30px;height:30px;flex:0 0 30px;position:relative;display:inline-block;}
.brand-mark svg{width:100%;height:100%;display:block;}
.brand-text{font-size:17.5px;font-weight:700;color:var(--text);letter-spacing:.5px;white-space:nowrap;}
.brand:hover .brand-text{color:#fff;}
.nav-channels{display:flex;align-items:center;gap:26px;margin-left:8px;flex:1 1 auto;}
.nav-link{position:relative;font-size:15px;color:var(--text-2);padding:6px 0;white-space:nowrap;}
.nav-link::after{content:"";position:absolute;left:0;right:100%;bottom:-2px;height:2px;background:var(--cyan);transition:right .2s ease;}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{right:0;}
.nav-link.active{color:var(--text);font-weight:600;}
.nav-link.active::after{right:0;}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-search{position:relative;display:flex;align-items:center;}
.nav-search i{position:absolute;left:14px;color:var(--text-3);font-size:13px;pointer-events:none;}
.nav-search input{
  width:200px;height:38px;border-radius:999px;padding:0 16px 0 36px;
  background:var(--glass);border:1px solid var(--line);color:var(--text);font-size:14px;
  transition:border-color .16s ease,box-shadow .16s ease,background-color .16s ease;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search input:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(61,220,200,.18);background:rgba(255,255,255,.08);}
.nav-login{font-size:14.5px;color:var(--text-2);white-space:nowrap;}
.nav-login:hover{color:var(--cyan);}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;background:var(--glass);border:1px solid var(--line);color:var(--text);font-size:16px;}
.nav-toggle:hover{border-color:rgba(61,220,200,.45);color:var(--cyan);}

/* offcanvas drawer */
.drawer{background:#0A1226;color:var(--text);border-left:1px solid var(--line);width:82vw;max-width:340px;}
.drawer .offcanvas-header{border-bottom:1px solid var(--line-soft);padding:18px 20px;}
.drawer .offcanvas-body{padding:20px;display:flex;flex-direction:column;gap:6px;}
.drawer .d-link{display:flex;align-items:center;justify-content:space-between;padding:14px 14px;border-radius:12px;color:var(--text-2);font-size:15.5px;border:1px solid transparent;}
.drawer .d-link:hover{background:var(--glass);color:var(--text);border-color:var(--line);}
.drawer .d-link.active{color:var(--cyan);background:rgba(61,220,200,.09);border-color:rgba(61,220,200,.3);}
.drawer-actions{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.drawer-actions .btn-gold-sm,.drawer-actions .btn-ghost-sm{width:100%;padding:12px 18px;font-size:15px;}
.drawer .nav-search{width:100%;margin-top:14px;}
.drawer .nav-search input{width:100%;}
.btn-close-custom{background:transparent;border:none;color:var(--text-2);font-size:20px;}

/* ---------- hero ---------- */
.hero{position:relative;padding:72px 0 80px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:radial-gradient(70% 60% at 12% 20%,rgba(61,220,200,.09),transparent 70%),
             radial-gradient(60% 55% at 88% 0%,rgba(140,123,255,.13),transparent 72%);
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.hero h1{font-size:clamp(30px,4.2vw,46px);font-weight:700;line-height:1.25;letter-spacing:.5px;}
.hero h1 .hl{color:var(--cyan);}
.hero-sub{margin-top:20px;color:var(--text-2);font-size:16.5px;line-height:1.85;max-width:560px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.hero-tags{display:flex;flex-wrap:wrap;align-items:center;gap:0;margin-top:30px;}
.hero-tags span{font-size:13.5px;color:var(--text-2);padding:0 14px;position:relative;letter-spacing:.5px;}
.hero-tags span:first-child{padding-left:0;}
.hero-tags span:not(:last-child)::after{content:"";position:absolute;right:0;top:50%;transform:translateY(-50%);width:1px;height:12px;background:var(--line);}
.hero-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);aspect-ratio:4/3;background:linear-gradient(140deg,rgba(61,220,200,.18),rgba(140,123,255,.2));}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(7,12,28,.92) 0%,rgba(7,12,28,.35) 45%,transparent 80%);}
.hero-visual .hv-caption{position:absolute;left:22px;right:22px;bottom:20px;z-index:2;}
.hero-visual .hv-caption strong{display:block;font-size:16px;font-weight:600;letter-spacing:.5px;}
.hero-visual .hv-caption span{font-size:13px;color:var(--text-2);}

/* ---------- stat bar ---------- */
.stat-bar{margin-top:56px;display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);}
.stat-item{padding:22px 20px;border-right:1px solid var(--line-soft);}
.stat-item:last-child{border-right:none;}
.stat-item b{display:block;font-family:Inter,system-ui,sans-serif;font-size:26px;font-weight:700;color:var(--cyan);letter-spacing:.5px;}
.stat-item small{display:block;font-size:13.5px;color:var(--text-2);margin-top:4px;}

/* ---------- feature cover ---------- */
.cover-card{
  position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  min-height:340px;display:flex;align-items:flex-end;
  box-shadow:var(--shadow);transition:box-shadow .3s ease,border-color .3s ease;
}
.cover-card:hover{border-color:rgba(61,220,200,.45);box-shadow:var(--shadow-hover);}
.cover-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.cover-card .cover-mask{position:absolute;inset:0;background:linear-gradient(to top,rgba(7,12,28,.95) 0%,rgba(7,12,28,.7) 40%,rgba(7,12,28,.25) 100%);}
.cover-body{position:relative;z-index:2;padding:32px 34px;max-width:720px;}
.cover-body h3{font-size:clamp(21px,2.2vw,27px);margin-top:14px;line-height:1.35;}
.cover-body p{margin-top:12px;color:var(--text-2);font-size:15px;}
.cover-foot{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:22px;}
.cover-foot .meta{font-size:13.5px;color:var(--text-3);font-family:Inter,system-ui,sans-serif;}

/* ---------- atlas index ---------- */
.atlas-list{border-top:1px solid var(--line-soft);}
.atlas-item{
  display:grid;grid-template-columns:64px 1fr 120px 40px;align-items:center;gap:18px;
  padding:20px 18px;border-bottom:1px solid var(--line-soft);position:relative;
  transition:background-color .18s ease,padding-left .18s ease;
}
.atlas-item::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:2px;background:var(--cyan);opacity:0;transition:opacity .18s ease;}
.atlas-item:hover{background:var(--glass);padding-left:26px;}
.atlas-item:hover::before{opacity:1;}
.atlas-num{font-family:Inter,system-ui,sans-serif;font-size:20px;font-weight:600;color:var(--violet);letter-spacing:1px;}
.atlas-name{font-size:17px;font-weight:600;color:var(--text);}
.atlas-desc{font-size:13.5px;color:var(--text-2);margin-top:2px;}
.atlas-count{font-size:13.5px;color:var(--text-3);font-family:Inter,system-ui,sans-serif;text-align:right;}
.atlas-arrow{color:var(--text-3);font-size:14px;text-align:right;transition:transform .18s ease,color .18s ease;}
.atlas-item:hover .atlas-arrow{color:var(--cyan);transform:translateX(4px);}

/* ---------- glass cards ---------- */
.g-card{
  height:100%;display:flex;flex-direction:column;border-radius:var(--r-md);overflow:hidden;
  background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.g-card:hover{transform:translateY(-2px);border-color:rgba(61,220,200,.45);box-shadow:var(--shadow-hover);}
.g-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(140deg,rgba(61,220,200,.16),rgba(140,123,255,.2));}
.g-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.g-card:hover .g-media img{transform:scale(1.03);}
.g-media .badge{position:absolute;left:14px;top:14px;z-index:2;background:rgba(140,123,255,.82);color:#F2F0FF;border-color:transparent;backdrop-filter:blur(6px);}
.g-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto;}
.g-body h3{font-size:17.5px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.g-body p{margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.g-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);font-family:Inter,system-ui,sans-serif;}
.g-foot i{color:var(--text-3);}
.g-card:hover .g-foot i{color:var(--cyan);}

/* ---------- cms list ---------- */
.cms-item{
  display:block;height:100%;padding:22px 24px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.cms-item:hover{transform:translateY(-2px);border-color:rgba(61,220,200,.45);box-shadow:var(--shadow-hover);background:var(--glass-2);}
.cms-item h3{margin-top:14px;font-size:17.5px;line-height:1.5;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.cms-item p{margin-top:10px;font-size:14.5px;color:var(--text-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.cms-meta{margin-top:16px;padding-top:14px;border-top:1px solid var(--line-soft);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);font-family:Inter,system-ui,sans-serif;}
.empty-state{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border:1px dashed var(--line);border-radius:var(--r-md);background:var(--glass);text-align:center;padding:32px;
}
.empty-state i{font-size:30px;color:var(--violet);}
.empty-state span{color:var(--text-2);font-size:15px;}

/* ---------- horizontal strip ---------- */
.strip{display:grid;grid-auto-flow:column;grid-auto-columns:calc((100% - 60px)/4);gap:20px;overflow-x:auto;padding:6px 4px 18px;scroll-snap-type:x mandatory;}
.strip::-webkit-scrollbar{height:6px;}
.strip::-webkit-scrollbar-thumb{background:rgba(160,190,255,.2);border-radius:999px;}
.mini-card{
  scroll-snap-align:start;border-radius:var(--r-sm);overflow:hidden;background:var(--glass);
  border:1px solid var(--line);transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;display:block;
}
.mini-card:hover{transform:translateY(-2px);border-color:rgba(61,220,200,.42);box-shadow:var(--shadow-hover);}
.mini-card .m-media{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(140deg,rgba(61,220,200,.14),rgba(140,123,255,.18));}
.mini-card .m-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.mini-card:hover .m-media img{transform:scale(1.03);}
.mini-card .m-body{padding:16px 18px 18px;}
.mini-card h3{font-size:15.5px;line-height:1.5;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.mini-card span{display:block;margin-top:10px;font-size:12.5px;color:var(--text-3);font-family:Inter,system-ui,sans-serif;}

/* ---------- timeline-ish list (used in hero-side? keep for balance) ---------- */
.field-note{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line-soft);}
.field-note:last-child{border-bottom:none;}
.field-note b{font-family:Inter,system-ui,sans-serif;color:var(--gold);font-size:14px;flex:0 0 62px;padding-top:2px;}
.field-note div p{font-size:14.5px;color:var(--text-2);}
.field-note div strong{display:block;font-size:15.5px;font-weight:600;color:var(--text);margin-bottom:4px;}

/* ---------- faq ---------- */
.faq-wrap{max-width:800px;margin:0 auto;}
.faq-item{background:var(--glass);border:1px solid var(--line);border-radius:var(--r-sm);margin-bottom:8px;overflow:hidden;transition:border-color .2s ease;}
.faq-item.open{border-color:rgba(61,220,200,.4);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;background:transparent;border:none;color:var(--text);font-size:16px;font-weight:600;text-align:left;cursor:pointer;
}
.faq-q .plus{position:relative;flex:0 0 16px;width:16px;height:16px;transition:transform .25s ease;}
.faq-q .plus::before,.faq-q .plus::after{content:"";position:absolute;background:var(--cyan);border-radius:2px;}
.faq-q .plus::before{left:0;top:7px;width:16px;height:2px;}
.faq-q .plus::after{top:0;left:7px;width:2px;height:16px;transition:opacity .25s ease;}
.faq-item.open .plus{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a .faq-a-inner{padding:0 20px 20px 22px;position:relative;font-size:15px;line-height:1.8;color:var(--text-2);}
.faq-item.open .faq-a .faq-a-inner::before{content:"";position:absolute;left:0;top:2px;bottom:22px;width:2px;background:var(--cyan);}

/* ---------- cta band ---------- */
.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
  padding:28px 32px;border-radius:var(--r-lg);border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(61,220,200,.10),rgba(140,123,255,.12));
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow);
}
.cta-band h3{font-size:20px;font-weight:600;}
.cta-band p{margin-top:6px;font-size:14px;color:var(--text-2);}
.cta-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:46px;height:46px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--line);color:var(--text-2);cursor:pointer;transition:all .16s ease;
}
.icon-btn:hover{color:var(--cyan);border-color:rgba(61,220,200,.45);background:rgba(61,220,200,.08);}
.icon-btn.saved{color:var(--gold);border-color:rgba(242,180,87,.6);background:rgba(242,180,87,.12);}
.btn-gold.saved{background:linear-gradient(135deg,#FFE0AC,#F2B457);}

/* ---------- footer ---------- */
.site-footer{margin-top:20px;border-top:1px solid var(--line-soft);background:rgba(9,15,32,.7);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding:64px 0 40px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:320px;}
.footer-col h4{font-size:14px;color:var(--gold);letter-spacing:.5px;margin-bottom:16px;font-weight:600;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--cyan);}
.footer-note{font-size:13.5px;color:var(--text-2);line-height:1.9;}
.footer-bottom{border-top:1px solid var(--line-soft);padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);}
.footer-bottom span{font-family:Inter,system-ui,sans-serif;}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:22px;bottom:26px;z-index:1030;width:46px;height:46px;border-radius:999px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--line);color:var(--text-2);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(10px);transition:all .25s ease;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{color:var(--cyan);border-color:rgba(61,220,200,.45);box-shadow:0 0 20px rgba(61,220,200,.2);}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .strip{grid-auto-columns:calc((100% - 40px)/3);}
  .nav-search input{width:170px;}
  .nav-channels{gap:20px;}
}
@media (max-width:991.98px){
  .nav-channels,.nav-actions{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;margin-left:auto;}
  .nav-inner{height:64px;gap:16px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-visual{order:2;aspect-ratio:16/10;}
  .hero{padding:48px 0 56px;}
  .stat-bar{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(2){border-right:none;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line-soft);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px;}
  .section{padding:64px 0;}
  .strip{grid-auto-columns:calc((100% - 20px)/2);}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .container{padding-left:16px;padding-right:16px;}
  .section{padding:48px 0;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:15.5px;}
  .hero-cta .btn-gold,.hero-cta .btn-ghost{width:100%;padding:14px 20px;min-height:44px;}
  .stat-item{padding:18px 14px;}
  .stat-item b{font-size:22px;}
  .atlas-item{grid-template-columns:44px 1fr;grid-template-areas:"num name" "num desc" "count count";row-gap:6px;}
  .atlas-num{grid-area:num;}
  .atlas-name{grid-area:name;}
  .atlas-desc{grid-area:desc;}
  .atlas-count{grid-area:count;text-align:left;margin-top:6px;}
  .atlas-arrow{display:none;}
  .cover-body{padding:24px 22px;}
  .cover-card{min-height:300px;}
  .strip{grid-auto-columns:82%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-band{padding:22px 20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-gold{flex:1 1 auto;}
  .footer-bottom{justify-content:flex-start;}
}

/* roulang page: article */
:root{
  --ink:#070C1C;
  --panel:#0E1730;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.085);
  --line:rgba(160,190,255,.14);
  --line-soft:rgba(160,190,255,.10);
  --cyan:#3DDCC8;
  --violet:#8C7BFF;
  --gold:#F2B457;
  --gold-a:#F7CE85;
  --gold-b:#E0A23C;
  --text:#E8EDF7;
  --muted:#9AA9C4;
  --dim:#6C7A99;
  --warn:#FF7A8A;
  --r-lg:18px;
  --r-md:16px;
  --r-sm:12px;
  --r-img:14px;
  --sh:0 8px 30px rgba(0,0,0,.45);
  --sh-hover:0 12px 36px rgba(0,0,0,.55), 0 0 24px rgba(61,220,200,.22);
  --ease:160ms ease;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(900px 500px at 12% -6%, rgba(140,123,255,.16), transparent 62%),
    radial-gradient(760px 460px at 88% 4%, rgba(61,220,200,.12), transparent 60%),
    radial-gradient(1200px 700px at 50% 110%, rgba(242,180,87,.07), transparent 65%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.5;
  background-image:radial-gradient(rgba(232,237,247,.12) 1px, transparent 1px);
  background-size:120px 120px;
}
img{max-width:100%;display:block;}
a{color:var(--cyan);text-decoration:none;transition:color var(--ease),opacity var(--ease);}
a:hover{color:#7CF3E4;}
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
  border-radius:6px;
}
h1,h2,h3,h4{font-weight:600;line-height:1.35;margin:0;color:var(--text);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
  position:relative;
  z-index:1;
}
@media (min-width:1400px){.container{max-width:1280px;}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(7,12,28,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-soft);
  transition:background var(--ease),box-shadow var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,12,28,.94);
  box-shadow:0 10px 30px rgba(0,0,0,.45);
}
.header-inner{
  height:72px;
  display:flex;
  align-items:center;
  gap:24px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text);
  flex-shrink:0;
}
.brand:hover{color:var(--text);}
.brand-mark{width:30px;height:30px;display:inline-flex;}
.brand-mark svg{width:100%;height:100%;}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.5px;}
.nav-channels{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:8px;
  flex-wrap:nowrap;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  color:var(--muted);
  border-radius:var(--r-sm);
  white-space:nowrap;
  transition:color var(--ease),background var(--ease);
}
.nav-link:hover{color:var(--text);background:var(--glass);}
.nav-link.active{color:var(--text);}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--cyan);
}
.header-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.nav-search{
  display:flex;
  align-items:center;
  gap:8px;
  width:200px;
  height:38px;
  padding:0 14px;
  border-radius:999px;
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--dim);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.nav-search:focus-within{
  border-color:rgba(61,220,200,.75);
  box-shadow:0 0 0 3px rgba(61,220,200,.16);
}
.nav-search i{font-size:13px;color:var(--dim);}
.nav-search input{
  flex:1;
  min-width:0;
  background:transparent;
  border:0;
  outline:none;
  color:var(--text);
  font-size:14px;
}
.nav-search input::placeholder{color:var(--dim);}
.nav-text-link{
  font-size:15px;
  color:var(--muted);
  padding:6px 4px;
}
.nav-text-link:hover{color:var(--text);}
.btn-gold,.btn-ghost,.btn-line{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:10px 22px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  border:1px solid transparent;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
}
.btn-gold{
  background:linear-gradient(135deg,var(--gold-a),var(--gold-b));
  color:#0A1024;
  box-shadow:0 0 18px rgba(242,180,87,.22);
}
.btn-gold:hover{
  color:#0A1024;
  transform:translateY(-1px);
  box-shadow:0 0 30px rgba(242,180,87,.4);
}
.btn-gold:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;
  border-color:rgba(61,220,200,.55);
  color:var(--cyan);
}
.btn-ghost:hover{
  color:var(--cyan);
  background:rgba(61,220,200,.12);
  border-color:var(--cyan);
}
.btn-line{
  background:var(--glass);
  border-color:var(--line);
  color:var(--text);
}
.btn-line:hover{color:var(--text);background:var(--glass-strong);border-color:rgba(61,220,200,.45);}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  border-radius:var(--r-sm);
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--text);
  font-size:17px;
}
.nav-toggle:hover{border-color:rgba(61,220,200,.5);}

/* 抽屉 */
.offcanvas.star-drawer{
  background:rgba(10,16,36,.98);
  color:var(--text);
  border-right:1px solid var(--line);
  width:300px;
}
.star-drawer .offcanvas-header{border-bottom:1px solid var(--line-soft);padding:18px 20px;}
.star-drawer .offcanvas-title{font-size:16px;font-weight:700;}
.star-drawer .btn-close{filter:invert(1) grayscale(1) brightness(1.6);opacity:.7;}
.drawer-body{padding:16px 20px 28px;}
.drawer-links{display:flex;flex-direction:column;gap:4px;margin-bottom:20px;}
.drawer-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:48px;
  padding:0 14px;
  border-radius:var(--r-sm);
  color:var(--muted);
  font-size:15px;
  border:1px solid transparent;
}
.drawer-links a:hover,.drawer-links a.active{
  color:var(--text);
  background:var(--glass);
  border-color:var(--line);
}
.drawer-actions{display:flex;flex-direction:column;gap:10px;}
.drawer-actions .btn-gold,.drawer-actions .btn-ghost,.drawer-actions .btn-line{width:100%;}
.drawer-search{margin-bottom:20px;}

/* ---------- 面包屑 ---------- */
.crumb-area{padding:32px 0 0;}
.breadcrumb-bar{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--muted);
}
.breadcrumb-bar a{color:var(--muted);}
.breadcrumb-bar a:hover{color:var(--cyan);}
.breadcrumb-bar .sep{color:var(--dim);}
.breadcrumb-bar .current{color:var(--text);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头 ---------- */
.article-head{padding:24px 0 0;}
.article-head .badge-cat{margin-bottom:16px;}
.badge-cat{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.4px;
  background:rgba(140,123,255,.14);
  color:#B7ACFF;
  border:1px solid rgba(140,123,255,.28);
}
.badge-time{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  background:rgba(61,220,200,.12);
  color:#7CF3E4;
  border:1px solid rgba(61,220,200,.26);
}
.article-title{
  font-size:clamp(30px,4.2vw,46px);
  font-weight:700;
  line-height:1.25;
  letter-spacing:.5px;
  max-width:22ch;
  margin:0 0 18px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 14px;
  font-size:14px;
  color:var(--muted);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--dim);display:inline-block;}
.article-meta .num{font-variant-numeric:tabular-nums;}
.article-cover{
  margin:28px 0 0;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh);
  position:relative;
  aspect-ratio:16/7;
  background:linear-gradient(135deg,rgba(61,220,200,.18),rgba(140,123,255,.18));
}
.article-cover img{width:100%;height:100%;object-fit:cover;}
.article-cover::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,12,28,0) 40%,rgba(7,12,28,.78) 100%);
  pointer-events:none;
}
.cover-caption{
  position:absolute;
  left:20px;
  bottom:14px;
  z-index:2;
  font-size:13px;
  color:var(--muted);
}

/* ---------- 正文布局 ---------- */
.article-main{padding:56px 0 0;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,820px) 220px;
  gap:56px;
  justify-content:center;
  align-items:start;
}
.article-body{
  min-width:0;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
}
.article-body > * + *{margin-top:20px;}
.article-body p{color:var(--muted);line-height:1.9;}
.article-body h2{
  position:relative;
  padding-left:16px;
  margin-top:44px;
  font-size:clamp(22px,2.4vw,28px);
  font-weight:600;
  scroll-margin-top:100px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.36em;
  width:3px;
  height:1em;
  border-radius:2px;
  background:var(--cyan);
  box-shadow:0 0 12px rgba(61,220,200,.4);
}
.article-body h3{
  margin-top:32px;
  font-size:20px;
  font-weight:600;
  color:var(--text);
}
.article-body h4{font-size:17px;color:var(--text);}
.article-body a{text-decoration:underline;text-underline-offset:4px;}
.article-body strong{color:#FFFFFF;}
.article-body ul,.article-body ol{padding-left:22px;color:var(--muted);}
.article-body ul{list-style:none;}
.article-body ul li{position:relative;padding-left:16px;}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:0;
  top:.85em;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--violet);
  box-shadow:0 0 8px rgba(140,123,255,.5);
}
.article-body ol{list-style:decimal;}
.article-body ol li::marker{color:var(--cyan);font-variant-numeric:tabular-nums;}
.article-body li + li{margin-top:8px;}
.article-body blockquote{
  margin:26px 0;
  padding:18px 22px;
  border-left:2px solid var(--gold);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  background:var(--glass);
  backdrop-filter:blur(10px);
  color:var(--muted);
  font-size:15.5px;
}
.article-body blockquote p{color:var(--muted);}
.article-body img{
  width:100%;
  border-radius:var(--r-img);
  border:1px solid var(--line);
}
.article-body figure{margin:26px 0;}
.article-body figcaption{
  margin-top:10px;
  font-size:13px;
  color:var(--dim);
  text-align:center;
}
.article-body pre{
  background:rgba(9,14,30,.92);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  padding:18px 20px;
  overflow-x:auto;
  font-size:14px;
  line-height:1.7;
}
.article-body code{
  font-family:"JetBrains Mono",Consolas,Menlo,monospace;
  color:var(--cyan);
  background:rgba(61,220,200,.1);
  padding:2px 6px;
  border-radius:6px;
  font-size:14px;
}
.article-body pre code{background:none;padding:0;color:#CFE3F7;}
.article-body hr{border:0;border-top:1px solid var(--line-soft);margin:36px 0;}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;}
.article-body th,.article-body td{
  padding:12px 14px;
  border-bottom:1px solid var(--line-soft);
  text-align:left;
  color:var(--muted);
}
.article-body th{color:var(--text);font-weight:600;background:var(--glass);}

/* 空态 */
.empty-state{
  min-height:220px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  padding:40px 24px;
  border:1px dashed var(--line);
  border-radius:var(--r-lg);
  background:var(--glass);
  text-align:center;
}
.empty-state i{font-size:28px;color:var(--violet);}
.empty-state p{color:var(--muted);font-size:15px;}

/* 目录 */
.article-toc{
  position:sticky;
  top:100px;
  padding:20px;
  border-radius:var(--r-md);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
}
.article-toc h2{
  font-size:14px;
  font-weight:600;
  letter-spacing:.6px;
  color:var(--cyan);
  margin-bottom:14px;
}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;
  padding:7px 10px;
  font-size:13.5px;
  line-height:1.6;
  color:var(--muted);
  border-left:2px solid transparent;
  border-radius:0 8px 8px 0;
}
.toc-list a:hover{color:var(--text);background:var(--glass);}
.toc-list a.active{
  color:var(--text);
  border-left-color:var(--cyan);
  background:rgba(61,220,200,.1);
}

/* 标签与操作 */
.article-foot{margin-top:44px;}
.article-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  padding-top:24px;
  border-top:1px solid var(--line-soft);
}
.tag-pill{
  display:inline-flex;
  align-items:center;
  padding:6px 14px;
  border-radius:999px;
  font-size:13px;
  color:var(--muted);
  background:var(--glass);
  border:1px solid var(--line);
  transition:color var(--ease),border-color var(--ease),background var(--ease);
}
.tag-pill:hover{color:var(--text);border-color:rgba(61,220,200,.45);background:var(--glass-strong);}
.article-actions{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:20px;
}
.pill-btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:10px 18px;
  border-radius:999px;
  font-size:14px;
  font-weight:600;
  color:var(--muted);
  background:var(--glass);
  border:1px solid var(--line);
  cursor:pointer;
  transition:transform var(--ease),color var(--ease),border-color var(--ease),background var(--ease),box-shadow var(--ease);
}
.pill-btn:hover{color:var(--text);transform:translateY(-1px);border-color:rgba(61,220,200,.45);}
.pill-btn.is-saved{
  color:var(--gold);
  border-color:rgba(242,180,87,.6);
  background:rgba(242,180,87,.1);
}
.pill-btn.is-saved:hover{color:var(--gold);}

/* ---------- 通用区块 ---------- */
.section{padding:80px 0;}
.section-head{margin-bottom:32px;}
.section-head h2{
  font-size:clamp(24px,2.6vw,32px);
  font-weight:600;
  margin-bottom:10px;
}
.section-head p{color:var(--muted);font-size:15px;max-width:64ch;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:1.4px;
  color:var(--cyan);
  margin-bottom:12px;
}
.eyebrow::before{
  content:"";
  width:18px;
  height:1px;
  background:linear-gradient(90deg,var(--cyan),transparent);
}

/* 相关推荐 */
.rel-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.glass-card{
  display:flex;
  flex-direction:column;
  border-radius:var(--r-md);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  overflow:hidden;
  box-shadow:var(--sh);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  height:100%;
}
.glass-card:hover{
  transform:translateY(-2px);
  border-color:rgba(61,220,200,.45);
  box-shadow:var(--sh-hover);
}
.card-media{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:linear-gradient(135deg,rgba(61,220,200,.2),rgba(140,123,255,.2));
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease;}
.glass-card:hover .card-media img{transform:scale(1.03);}
.card-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,12,28,0) 45%,rgba(7,12,28,.72) 100%);
}
.card-body{
  padding:20px 22px 22px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1;
}
.card-body h3{
  font-size:17px;
  line-height:1.5;
  font-weight:600;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-body p{
  color:var(--muted);
  font-size:14px;
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--dim);
}
.card-foot .arrow{color:var(--cyan);font-size:13px;}

/* 上下篇 */
.post-nav{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
.post-nav-item{
  display:flex;
  flex-direction:column;
  gap:6px;
  padding:22px 24px;
  border-radius:var(--r-md);
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--text);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.post-nav-item:hover{
  color:var(--text);
  transform:translateY(-2px);
  border-color:rgba(61,220,200,.45);
  box-shadow:var(--sh-hover);
}
.post-nav-item .kicker{font-size:12px;color:var(--dim);letter-spacing:1px;}
.post-nav-item .title{font-size:16px;font-weight:600;}
.post-nav-item.next{align-items:flex-end;text-align:right;}
.back-cat{
  margin-top:20px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--muted);
}
.back-cat:hover{color:var(--cyan);}

/* 相关分类胶囊条 */
.rel-cats{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:28px;
  padding-top:24px;
  border-top:1px solid var(--line-soft);
}

/* 订阅通栏 */
.cta-strip{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  padding:32px 36px;
  border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(61,220,200,.10),rgba(140,123,255,.12)),var(--panel);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  box-shadow:var(--sh);
}
.cta-strip h2{font-size:22px;margin-bottom:6px;}
.cta-strip p{color:var(--muted);font-size:15px;}
.subscribe-form{display:flex;gap:12px;flex-wrap:wrap;}
.subscribe-form input{
  width:240px;
  height:44px;
  padding:0 16px;
  border-radius:var(--r-sm);
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--text);
  font-size:15px;
  outline:none;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.subscribe-form input::placeholder{color:var(--dim);}
.subscribe-form input:focus{
  border-color:rgba(61,220,200,.7);
  box-shadow:0 0 0 3px rgba(61,220,200,.15);
}
.form-tip{font-size:13px;color:var(--dim);margin-top:10px;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:80px;
  border-top:1px solid var(--line-soft);
  background:rgba(9,14,30,.7);
  padding:56px 0 0;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.4fr;
  gap:40px;
  padding-bottom:40px;
}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{color:var(--muted);font-size:14px;line-height:1.8;max-width:34ch;}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--gold);
  margin-bottom:16px;
  letter-spacing:.4px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:var(--muted);font-size:14px;}
.footer-col a:hover{color:var(--text);}
.footer-note{color:var(--muted);font-size:14px;line-height:1.8;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0;
  border-top:1px solid var(--line-soft);
  font-size:13px;
  color:var(--dim);
}

/* 回到顶部 */
.to-top{
  position:fixed;
  right:24px;
  bottom:28px;
  width:46px;
  height:46px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--glass-strong);
  border:1px solid var(--line);
  backdrop-filter:blur(12px);
  color:var(--text);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease),border-color var(--ease);
  z-index:1040;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{border-color:rgba(61,220,200,.6);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .article-toc{display:none;}
  .article-body{max-width:820px;margin:0 auto;}
  .article-cover{aspect-ratio:16/8;}
}
@media (max-width:991px){
  .nav-channels{display:none;}
  .nav-search{display:none;}
  .nav-text-link,.header-actions .btn-ghost,.header-actions .btn-gold{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{height:60px;}
  .section{padding:56px 0;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}
@media (max-width:767px){
  .container{padding-left:16px;padding-right:16px;}
  .article-title{max-width:none;}
  .article-main{padding:40px 0 0;}
  .article-cover{aspect-ratio:16/10;margin-top:22px;}
  .rel-grid{grid-template-columns:minmax(0,1fr);}
  .post-nav{grid-template-columns:minmax(0,1fr);}
  .post-nav-item.next{align-items:flex-start;text-align:left;}
  .cta-strip{padding:26px 22px;}
  .subscribe-form{width:100%;}
  .subscribe-form input{width:100%;}
  .subscribe-form .btn-gold{width:100%;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .section{padding:48px 0;}
}
@media (max-width:520px){
  .article-title{font-size:30px;}
  .article-meta{font-size:13px;}
  .crumb-area{padding-top:22px;}
  .breadcrumb-bar .current{max-width:34ch;}
}

/* roulang page: category1 */
:root{
  --bg:#070C1C;
  --panel:#0E1730;
  --glass:rgba(255,255,255,.055);
  --glass-2:rgba(255,255,255,.09);
  --line:rgba(160,190,255,.14);
  --line-soft:rgba(160,190,255,.10);
  --cyan:#3DDCC8;
  --violet:#8C7BFF;
  --gold:#F2B457;
  --gold-1:#F7CE85;
  --gold-2:#E0A23C;
  --text:#E8EDF7;
  --muted:#9AA9C4;
  --dim:#6C7A99;
  --danger:#FF7A8A;
  --r-lg:18px;
  --r-md:16px;
  --r-sm:12px;
  --sh:0 8px 30px rgba(0,0,0,.45);
  --sh-hover:0 12px 36px rgba(0,0,0,.55),0 0 24px rgba(61,220,200,.22);
}

/* ============ base ============ */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:100px;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.2px;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(circle at 10% 6%, rgba(140,123,255,.20), transparent 46%),
    radial-gradient(circle at 88% 2%, rgba(61,220,200,.14), transparent 44%),
    radial-gradient(circle at 50% 104%, rgba(242,180,87,.08), transparent 52%),
    radial-gradient(1.2px 1.2px at 64px 88px, rgba(232,237,247,.55), transparent 100%),
    radial-gradient(1px 1px at 196px 42px, rgba(61,220,200,.45), transparent 100%),
    radial-gradient(1px 1px at 320px 168px, rgba(232,237,247,.35), transparent 100%),
    radial-gradient(1.4px 1.4px at 460px 96px, rgba(140,123,255,.5), transparent 100%),
    radial-gradient(1px 1px at 118px 244px, rgba(232,237,247,.28), transparent 100%),
    radial-gradient(1px 1px at 388px 300px, rgba(242,180,87,.42), transparent 100%);
  background-size:auto,auto,auto,520px 380px,520px 380px,520px 380px,520px 380px,520px 380px,520px 380px;
  opacity:.9;
}
img{max-width:100%;display:block;}
a{color:var(--cyan);text-decoration:none;}
a:hover{color:#7DFFEE;}
button{font-family:inherit;}
h1,h2,h3,h4,h5{color:var(--text);margin:0;font-weight:600;letter-spacing:.4px;}
p{margin:0 0 14px;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:rgba(61,220,200,.3);color:#fff;}

.site-header,.page-main,.site-footer{position:relative;z-index:1;}

/* ============ a11y focus ============ */
a:focus-visible,button:focus-visible,input:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
  box-shadow:0 0 0 4px rgba(61,220,200,.18);
  border-radius:10px;
}

/* ============ container ============ */
.container{max-width:1200px;padding-left:24px;padding-right:24px;}
@media (min-width:1400px){.container{max-width:1280px;}}
@media (max-width:520px){.container{padding-left:16px;padding-right:16px;}}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(7,12,28,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-soft);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.scrolled{background:rgba(7,12,28,.94);box-shadow:0 10px 30px rgba(0,0,0,.45);}
.header-inner{display:flex;align-items:center;gap:26px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto;}
.brand-mark{width:32px;height:32px;display:inline-flex;flex:0 0 auto;}
.brand-mark svg{width:100%;height:100%;}
.brand-text{font-size:18px;font-weight:700;color:var(--text);letter-spacing:.6px;white-space:nowrap;}
.brand:hover .brand-text{color:#fff;}

.nav-channels{display:flex;align-items:center;gap:26px;margin-left:8px;}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--muted);
  text-decoration:none;
  padding:6px 2px;
  transition:color .16s ease;
  white-space:nowrap;
}
.nav-link:hover{color:var(--text);}
.nav-link.active{color:var(--text);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-8px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
}
.nav-link::before{
  content:"";position:absolute;left:0;right:0;bottom:-8px;height:2px;border-radius:2px;
  background:rgba(61,220,200,.45);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover::before{transform:scaleX(1);}
.nav-link.active::before{display:none;}

.header-actions{margin-left:auto;display:flex;align-items:center;gap:14px;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:200px;padding:8px 14px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);
  transition:border-color .16s ease,box-shadow .16s ease,background .16s ease;
}
.nav-search i{color:var(--dim);font-size:13px;}
.nav-search input{
  background:transparent;border:0;outline:none;width:100%;
  color:var(--text);font-size:14px;line-height:1.4;
}
.nav-search input::placeholder{color:var(--dim);}
.nav-search:focus-within{border-color:rgba(61,220,200,.85);background:rgba(61,220,200,.07);box-shadow:0 0 18px rgba(61,220,200,.25);}
.link-login{font-size:14.5px;color:var(--muted);text-decoration:none;transition:color .16s ease;white-space:nowrap;}
.link-login:hover{color:var(--cyan);}

.btn-gold{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1.4;
  color:#070C1C !important;
  background:linear-gradient(135deg,var(--gold-1),var(--gold-2));
  border:0;cursor:pointer;text-decoration:none;
  box-shadow:0 0 18px rgba(242,180,87,.26);
  transition:transform .16s ease,box-shadow .16s ease,filter .16s ease;
}
.btn-gold:hover{transform:translateY(-1px);box-shadow:0 0 30px rgba(242,180,87,.5);filter:saturate(1.08);}
.btn-gold:active{transform:translateY(1px);box-shadow:0 0 12px rgba(242,180,87,.32);}

.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1.4;
  color:var(--cyan);background:transparent;
  border:1px solid rgba(61,220,200,.55);
  cursor:pointer;text-decoration:none;
  transition:background .16s ease,color .16s ease,border-color .16s ease,transform .16s ease;
}
.btn-ghost:hover{background:rgba(61,220,200,.12);color:#8CFFF0;border-color:rgba(61,220,200,.9);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}

.btn-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 20px;border-radius:var(--r-sm);
  font-size:14.5px;font-weight:600;
  color:var(--text);background:var(--glass);border:1px solid var(--line);
  cursor:pointer;text-decoration:none;
  transition:background .16s ease,border-color .16s ease,color .16s ease;
}
.btn-soft:hover{background:var(--glass-2);border-color:rgba(160,190,255,.34);color:#fff;}

.drawer-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);color:var(--text);
  font-size:16px;cursor:pointer;transition:background .16s ease,border-color .16s ease;
}
.drawer-toggle:hover{background:var(--glass-2);border-color:rgba(61,220,200,.5);color:var(--cyan);}

@media (max-width:1399px){.nav-search{width:168px;}}
@media (max-width:1199px){
  .nav-channels{display:none;}
  .nav-search{display:none;}
  .drawer-toggle{display:inline-flex;}
}
@media (max-width:767px){
  .header-inner{height:60px;gap:12px;}
  .brand-text{font-size:16px;}
  .link-login,.header-actions .btn-ghost{display:none;}
  .header-actions .btn-gold{padding:10px 18px;font-size:14px;}
}

/* ============ mobile drawer ============ */
.drawer-panel{
  background:rgba(10,16,36,.98) !important;
  border-left:1px solid var(--line) !important;
  color:var(--text);
  width:min(86vw,340px);
}
.drawer-panel .offcanvas-header{
  border-bottom:1px solid var(--line-soft);
  padding:18px 20px;
  align-items:center;
}
.drawer-panel .offcanvas-body{padding:20px;display:flex;flex-direction:column;gap:6px;}
.drawer-link{
  display:block;padding:13px 14px;border-radius:var(--r-sm);
  font-size:15.5px;color:var(--muted);text-decoration:none;
  transition:background .16s ease,color .16s ease;
}
.drawer-link:hover{background:var(--glass);color:var(--text);}
.drawer-link.active{background:rgba(61,220,200,.1);color:var(--cyan);border-left:2px solid var(--cyan);}
.btn-close-x{
  width:38px;height:38px;border-radius:10px;
  background:var(--glass);border:1px solid var(--line);color:var(--text);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:background .16s ease,color .16s ease;
}
.btn-close-x:hover{background:var(--glass-2);color:var(--cyan);}
.drawer-search{
  display:flex;align-items:center;gap:8px;
  padding:11px 14px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);margin-bottom:10px;
}
.drawer-search input{background:transparent;border:0;outline:none;color:var(--text);width:100%;font-size:14px;}
.drawer-search input::placeholder{color:var(--dim);}
.drawer-search i{color:var(--dim);font-size:13px;}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:auto;padding-top:20px;}
.drawer-actions .btn-gold,.drawer-actions .btn-ghost{width:100%;}

/* ============ page hero ============ */
.page-hero{padding:52px 0 8px;}
.breadcrumb-x{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--dim);margin-bottom:26px;}
.breadcrumb-x a{color:var(--muted);text-decoration:none;transition:color .16s ease;}
.breadcrumb-x a:hover{color:var(--cyan);}
.breadcrumb-x span.sep{color:var(--dim);}
.breadcrumb-x .current{color:var(--muted);}

.page-hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:center;}
.badge-violet{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:999px;
  font-size:13px;font-weight:600;color:#C9C2FF;
  background:rgba(140,123,255,.16);
  border:1px solid rgba(140,123,255,.32);
  margin-bottom:18px;
}
.page-hero h1{
  font-size:clamp(30px,4.2vw,46px);
  font-weight:700;line-height:1.25;letter-spacing:.5px;
  margin-bottom:18px;
}
.page-hero-desc{font-size:16px;color:var(--muted);line-height:1.85;max-width:640px;margin-bottom:20px;}
.hero-tags{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-bottom:28px;}
.hero-tags span{font-size:13.5px;color:var(--muted);white-space:nowrap;}
.hero-tags span + span{padding-left:14px;border-left:1px solid var(--line);}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.page-hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  box-shadow:var(--sh);
}
@media (max-width:991px){
  .page-hero{padding:36px 0 4px;}
  .page-hero-grid{grid-template-columns:1fr;gap:30px;}
  .page-hero-media{order:2;}
  .hero-actions .btn-gold,.hero-actions .btn-ghost{flex:1 1 auto;min-width:150px;}
}
@media (max-width:520px){
  .page-hero h1{font-size:30px;}
  .hero-tags{gap:10px;}
  .hero-tags span + span{padding-left:10px;}
}

/* ============ stats strip ============ */
.stats-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:1px;background:var(--line-soft);
  border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;margin:48px 0 0;
}
.stat-cell{background:rgba(14,23,48,.72);padding:22px 22px;}
.stat-num{
  font-family:Inter,ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:28px;font-weight:700;color:var(--cyan);line-height:1.3;
  letter-spacing:.5px;
}
.stat-label{font-size:13.5px;color:var(--muted);margin-top:2px;}
@media (max-width:767px){
  .stats-strip{grid-template-columns:repeat(2,1fr);}
  .stat-cell{padding:18px 16px;}
  .stat-num{font-size:23px;}
}

/* ============ section shell ============ */
.section-block{padding:80px 0 0;}
.section-block:last-of-type{padding-bottom:0;}
@media (max-width:767px){.section-block{padding:52px 0 0;}}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:26px;}
.sec-title{
  position:relative;padding-left:14px;
  font-size:clamp(22px,2.2vw,28px);
  font-weight:600;line-height:1.35;margin:0;
}
.sec-title::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--cyan),var(--violet));
}
.sec-sub{font-size:14px;color:var(--dim);white-space:nowrap;}

/* ============ index layout ============ */
.index-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:52px;align-items:start;}
.index-sidebar{min-width:0;}
.sidebar-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:22px 18px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.sidebar-title{font-size:14px;font-weight:600;color:var(--gold);letter-spacing:.8px;margin-bottom:14px;padding-left:2px;}
.sidebar-nav{display:flex;flex-direction:column;gap:4px;}
.index-link{
  position:relative;display:block;
  padding:10px 14px;border-radius:10px;
  font-size:14.5px;color:var(--muted);text-decoration:none;
  transition:background .16s ease,color .16s ease;
}
.index-link:hover{background:var(--glass-2);color:var(--text);}
.index-link.active{background:var(--glass-2);color:var(--cyan);font-weight:600;}
.index-link.active::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:2px;border-radius:2px;
  background:var(--cyan);
}
.sidebar-foot{
  margin-top:16px;padding-top:16px;border-top:1px solid var(--line-soft);
  font-size:13px;color:var(--dim);line-height:1.75;
}
.sidebar-foot a{display:inline-block;margin-top:8px;font-size:13.5px;color:var(--cyan);text-decoration:underline;text-underline-offset:4px;}
.sidebar-foot a:hover{color:#8CFFF0;}

@media (min-width:992px){.index-sidebar{position:sticky;top:96px;}}
@media (max-width:991px){
  .index-layout{grid-template-columns:1fr;gap:26px;}
  .sidebar-card{padding:16px;}
  .sidebar-title{margin-bottom:10px;}
  .sidebar-nav{flex-direction:row;gap:8px;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch;}
  .sidebar-nav::-webkit-scrollbar{height:4px;}
  .sidebar-nav::-webkit-scrollbar-thumb{background:rgba(160,190,255,.25);border-radius:4px;}
  .index-link{white-space:nowrap;border:1px solid var(--line);border-radius:999px;padding:8px 15px;}
  .index-link.active::before{display:none;}
  .index-link.active{border-color:rgba(61,220,200,.55);}
  .sidebar-foot{display:none;}
}

/* ============ anchor sections ============ */
.anchor-section{padding-top:2px;scroll-margin-top:104px;}
.anchor-section + .anchor-section{margin-top:52px;}
.anchor-head{display:flex;align-items:baseline;justify-content:space-between;gap:14px;margin-bottom:6px;}
.anchor-head h2{
  position:relative;padding-left:14px;
  font-size:22px;font-weight:600;line-height:1.4;
}
.anchor-head h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--cyan),var(--violet));
}
.anchor-count{font-size:13px;color:var(--dim);font-family:Inter,ui-monospace,monospace;letter-spacing:.5px;}
.anchor-note{font-size:14.5px;color:var(--muted);margin:0 0 16px 14px;line-height:1.8;}
@media (max-width:520px){
  .anchor-note{margin-left:0;}
  .anchor-head h2{font-size:20px;}
}

.entry-list{display:flex;flex-direction:column;border-top:1px solid var(--line-soft);}
.entry-row{
  position:relative;
  display:grid;grid-template-columns:56px minmax(0,1fr) auto;
  gap:20px;align-items:center;
  padding:20px 16px 20px 14px;
  border-bottom:1px solid var(--line-soft);
  text-decoration:none;
  transition:background .18s ease;
}
.entry-row::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;border-radius:2px;
  background:transparent;transition:background .18s ease;
}
.entry-row:hover{background:var(--glass);}
.entry-row:hover::before{background:var(--cyan);}
.entry-no{
  font-family:Inter,ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:15px;font-weight:600;color:var(--violet);letter-spacing:1px;
}
.entry-main{min-width:0;}
.entry-title{
  display:block;font-size:17px;font-weight:600;color:var(--text);
  line-height:1.5;margin-bottom:4px;
  transition:color .18s ease;
}
.entry-row:hover .entry-title{color:#fff;}
.entry-desc{
  display:block;font-size:14px;color:var(--muted);line-height:1.72;
  overflow:hidden;
}
.entry-meta{display:flex;align-items:center;gap:16px;flex:0 0 auto;}
.entry-count{font-size:13.5px;color:var(--dim);white-space:nowrap;font-variant-numeric:tabular-nums;}
.entry-arrow{
  width:34px;height:34px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--cyan);font-size:12px;
  transition:background .18s ease,border-color .18s ease,transform .18s ease;
}
.entry-row:hover .entry-arrow{
  background:rgba(61,220,200,.14);
  border-color:rgba(61,220,200,.55);
  transform:translateX(3px);
}
@media (max-width:640px){
  .entry-row{grid-template-columns:40px minmax(0,1fr);gap:12px;padding:16px 12px 16px 10px;}
  .entry-meta{grid-column:2;justify-content:flex-start;margin-top:10px;}
  .entry-title{font-size:16px;}
  .entry-desc{font-size:13.5px;}
}

/* ============ faq ============ */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-acc .accordion-item{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:12px;
  margin-bottom:8px;
  overflow:hidden;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:border-color .18s ease;
}
.faq-acc .accordion-item:hover{border-color:rgba(160,190,255,.26);}
.faq-acc .accordion-header{margin:0;}
.faq-acc .accordion-button{
  background:transparent;
  color:var(--text);
  font-size:16px;font-weight:600;line-height:1.6;
  padding:18px 56px 18px 22px;
  border:0;
  box-shadow:none;
  border-radius:12px;
  transition:color .16s ease;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--cyan);background:transparent;box-shadow:none;}
.faq-acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--cyan);outline-offset:-2px;}
.faq-acc .accordion-button::after{
  background-image:none;
  content:"";
  position:absolute;right:22px;top:50%;
  width:14px;height:14px;margin:0;
  transform:translateY(-50%);
  background:
    linear-gradient(var(--cyan),var(--cyan)) center/2px 14px no-repeat,
    linear-gradient(var(--cyan),var(--cyan)) center/14px 2px no-repeat;
  transition:transform .26s ease;
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(45deg);}
.faq-acc .accordion-body{
  padding:0 22px 20px 22px;
  font-size:15px;line-height:1.8;color:var(--muted);
}
.faq-acc .accordion-item:has(.accordion-button:not(.collapsed)) .accordion-body{
  border-left:2px solid var(--cyan);
  margin-left:0;
}

/* ============ cta bar ============ */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:28px 34px;border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(61,220,200,.10),rgba(140,123,255,.10) 55%,rgba(242,180,87,.08));
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh);
}
.cta-title{font-size:20px;font-weight:600;margin-bottom:4px;}
.cta-sub{font-size:14px;color:var(--muted);margin:0;}
.cta-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.icon-btn{
  width:46px;height:46px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--line);color:var(--cyan);
  font-size:16px;cursor:pointer;
  transition:background .16s ease,border-color .16s ease,transform .16s ease,color .16s ease;
}
.icon-btn:hover{background:rgba(61,220,200,.12);border-color:rgba(61,220,200,.55);transform:translateY(-1px);}
.icon-btn:active{transform:translateY(1px);}
.icon-btn.saved{color:var(--gold);border-color:rgba(242,180,87,.7);background:rgba(242,180,87,.10);}
@media (max-width:767px){
  .cta-bar{flex-direction:column;align-items:flex-start;padding:24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-gold{flex:1 1 auto;}
}

/* ============ related categories ============ */
.rel-cats{display:flex;flex-wrap:wrap;gap:12px;}
.pill-link{
  display:inline-flex;align-items:center;gap:9px;
  padding:11px 20px;border-radius:999px;
  font-size:14.5px;color:var(--muted);text-decoration:none;
  background:var(--glass);border:1px solid var(--line);
  transition:color .16s ease,border-color .16s ease,background .16s ease,transform .16s ease;
}
.pill-link i{font-size:12px;color:var(--violet);transition:color .16s ease;}
.pill-link:hover{
  color:var(--cyan);border-color:rgba(61,220,200,.5);
  background:rgba(61,220,200,.10);transform:translateY(-1px);
}
.pill-link:hover i{color:var(--cyan);}

/* ============ footer ============ */
.site-footer{
  margin-top:96px;
  border-top:1px solid var(--line-soft);
  background:linear-gradient(180deg,rgba(14,23,48,.55),rgba(7,12,28,.95));
  padding-top:64px;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.35fr;
  gap:48px;
  padding-bottom:48px;
}
.footer-brand p{font-size:14px;color:var(--muted);line-height:1.85;margin:16px 0 0;max-width:340px;}
.footer-col h4{
  font-size:14px;font-weight:600;color:var(--gold);
  letter-spacing:.8px;margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col ul a{
  font-size:14px;color:var(--muted);text-decoration:none;
  transition:color .16s ease;
}
.footer-col ul a:hover{color:var(--cyan);}
.footer-note{font-size:14px;color:var(--muted);line-height:1.85;margin:0;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0 28px;
  border-top:1px solid var(--line-soft);
  font-size:13px;color:var(--dim);
}
@media (max-width:991px){
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:36px;}
}
@media (max-width:600px){
  .site-footer{margin-top:56px;padding-top:44px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}

/* ============ back to top ============ */
.to-top{
  position:fixed;right:24px;bottom:28px;z-index:1040;
  width:46px;height:46px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(14,23,48,.85);border:1px solid var(--line);
  color:var(--cyan);font-size:15px;cursor:pointer;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,visibility .25s ease,transform .25s ease,border-color .16s ease,box-shadow .16s ease;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{border-color:rgba(61,220,200,.6);box-shadow:0 0 20px rgba(61,220,200,.28);}
@media (max-width:520px){.to-top{right:16px;bottom:18px;width:42px;height:42px;}}

/* roulang page: category2 */
:root{
  --bg:#070C1C;
  --panel:#0E1730;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.085);
  --line:rgba(160,190,255,.14);
  --line-soft:rgba(160,190,255,.10);
  --cyan:#3DDCC8;
  --violet:#8C7BFF;
  --gold:#F2B457;
  --gold-1:#F7CE85;
  --gold-2:#E0A23C;
  --text:#E8EDF7;
  --muted:#9AA9C4;
  --dim:#6C7A99;
  --warn:#FF7A8A;
  --r-lg:18px;
  --r-md:16px;
  --r-sm:12px;
  --r-img:14px;
  --sh:0 8px 30px rgba(0,0,0,.45);
  --sh-hover:0 12px 36px rgba(0,0,0,.55),0 0 24px rgba(61,220,200,.22);
  --ease:160ms ease;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",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:-1;
  pointer-events:none;
  background-image:
    radial-gradient(circle, rgba(232,237,247,.10) 1px, transparent 1px),
    radial-gradient(circle, rgba(140,123,255,.08) 1px, transparent 1px);
  background-size:72px 72px, 118px 118px;
  background-position:0 0, 24px 36px;
  opacity:.55;
}
img{max-width:100%;display:block}
a{color:var(--cyan);text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease)}
a:hover{color:#6ff0dd}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.4px;line-height:1.3}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;box-shadow:0 0 0 4px rgba(61,220,200,.22);border-radius:8px}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
@media (min-width:1400px){.container{max-width:1280px}}
@media (max-width:767px){.container{padding-left:16px;padding-right:16px}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(7,12,28,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-soft);
  transition:background-color 240ms ease,box-shadow 240ms ease;
}
.site-header.is-scrolled{background:rgba(7,12,28,.94);box-shadow:0 6px 26px rgba(0,0,0,.45)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);flex-shrink:0}
.brand:hover{color:var(--text)}
.brand-mark{width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center}
.brand-mark svg{width:100%;height:100%}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.6px;white-space:nowrap}

.nav-channels{display:flex;align-items:center;gap:22px;margin-left:6px}
.nav-link{
  position:relative;
  font-size:15px;color:var(--muted);padding:24px 0;
  white-space:nowrap;transition:color var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:18px;height:2px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left;
  transition:transform 200ms ease;border-radius:2px;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--text);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}

.header-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.nav-search{position:relative;display:flex;align-items:center}
.nav-search svg{position:absolute;left:14px;width:15px;height:15px;color:var(--dim);pointer-events:none}
.nav-search input{
  width:200px;padding:9px 14px 9px 36px;
  background:var(--glass);border:1px solid var(--line);border-radius:999px;
  font-size:14px;color:var(--text);outline:none;
  transition:border-color var(--ease),box-shadow var(--ease),background-color var(--ease);
}
.nav-search input::placeholder{color:var(--dim)}
.nav-search input:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(61,220,200,.18);background:rgba(255,255,255,.08)}
.link-login{font-size:14px;color:var(--muted);white-space:nowrap}
.link-login:hover{color:var(--text)}

.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  padding:9px 18px;border-radius:var(--r-sm);
  border:1px solid rgba(61,220,200,.55);color:var(--cyan);
  font-size:14px;font-weight:600;background:transparent;white-space:nowrap;
  transition:background-color var(--ease),color var(--ease),transform var(--ease),border-color var(--ease);
}
.btn-ghost:hover{background:rgba(61,220,200,.12);color:#6ff0dd;border-color:var(--cyan)}
.btn-ghost:active{transform:translateY(1px)}

.btn-gold{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 22px;border-radius:var(--r-sm);border:none;
  background:linear-gradient(135deg,var(--gold-1),var(--gold-2));
  color:#0A1122;font-size:14px;font-weight:600;white-space:nowrap;
  box-shadow:0 0 16px rgba(242,180,87,.22);
  transition:box-shadow var(--ease),transform var(--ease),filter var(--ease);
}
.btn-gold:hover{color:#0A1122;transform:translateY(-1px);box-shadow:0 0 28px rgba(242,180,87,.42)}
.btn-gold:active{transform:translateY(0)}

.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-sm);
  background:var(--glass);border:1px solid var(--line);color:var(--text);
  align-items:center;justify-content:center;
}
.nav-toggle:hover{background:var(--glass-strong)}

@media (max-width:1199px){
  .nav-search input{width:150px}
  .nav-channels{gap:16px}
  .nav-link{font-size:14px}
}
@media (max-width:991px){
  .header-inner{height:60px;gap:12px}
  .nav-channels,.link-login,.btn-ghost{display:none}
  .nav-search{display:none}
  .nav-toggle{display:inline-flex}
  .brand-text{font-size:17px}
}
@media (max-width:575px){
  .btn-gold{padding:9px 16px;font-size:13px}
}

/* 抽屉导航 */
.offcanvas.drawer{
  background:var(--panel);color:var(--text);
  border-left:1px solid var(--line);width:300px;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line-soft)}
.drawer-body{padding:18px 20px 28px}
.drawer-nav a{
  display:block;padding:13px 4px;font-size:15px;color:var(--muted);
  border-bottom:1px solid var(--line-soft);
}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--cyan)}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:22px}
.drawer-actions .btn-ghost,.drawer-actions .btn-gold{width:100%;padding:12px 18px;min-height:44px}
.btn-close-x{background:none;border:none;color:var(--muted);font-size:22px;line-height:1}
.btn-close-x:hover{color:var(--text)}

/* ============ 通用按钮 ============ */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 28px;border-radius:var(--r-sm);border:none;
  background:linear-gradient(135deg,var(--gold-1),var(--gold-2));
  color:#0A1122;font-weight:600;font-size:15px;
  box-shadow:0 0 18px rgba(242,180,87,.24);
  transition:box-shadow var(--ease),transform var(--ease);
  min-height:44px;
}
.btn-main:hover{color:#0A1122;transform:translateY(-1px);box-shadow:0 0 30px rgba(242,180,87,.45)}
.btn-main:active{transform:translateY(1px)}

.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-sm);
  border:1px solid rgba(61,220,200,.55);background:transparent;color:var(--cyan);
  font-weight:600;font-size:15px;min-height:44px;
  transition:background-color var(--ease),color var(--ease),transform var(--ease),border-color var(--ease);
}
.btn-line:hover{background:rgba(61,220,200,.12);color:#6ff0dd;border-color:var(--cyan)}
.btn-line:active{transform:translateY(1px)}

.badge-cat{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;
  background:rgba(140,123,255,.16);color:#B6ABFF;font-size:12.5px;letter-spacing:.3px;
  border:1px solid rgba(140,123,255,.28);
}
.badge-time{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;
  background:rgba(61,220,200,.13);color:#6CEEDD;font-size:12.5px;
  border:1px solid rgba(61,220,200,.26);
}

/* ============ Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line-soft);
  background:
    radial-gradient(1000px 520px at 12% -10%, rgba(61,220,200,.10), transparent 62%),
    radial-gradient(760px 420px at 88% 8%, rgba(140,123,255,.14), transparent 60%),
    linear-gradient(180deg, rgba(10,18,40,.94), rgba(7,12,28,.98)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero-inner{
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:56px;align-items:center;padding:76px 0 68px;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:1.4px;color:var(--cyan);text-transform:none;
  margin-bottom:18px;
}
.hero-eyebrow::before{content:"";width:22px;height:1px;background:var(--cyan);display:inline-block}
.page-hero h1{
  font-size:clamp(30px,4.2vw,46px);font-weight:700;line-height:1.25;letter-spacing:.5px;
  margin-bottom:18px;
}
.page-hero h1 em{font-style:normal;color:var(--cyan)}
.hero-sub{font-size:17px;line-height:1.85;color:var(--muted);max-width:36em;margin-bottom:28px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px}
.hero-tags{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13.5px;color:var(--muted)}
.hero-tags span{display:inline-flex;align-items:center;gap:14px}
.hero-tags span:not(:last-child)::after{content:"";width:1px;height:14px;background:var(--line);display:inline-block}
.hero-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh)}
.hero-visual img{width:100%;aspect-ratio:16/11;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top, rgba(7,12,28,.92), rgba(7,12,28,.18) 55%, transparent);
}
.hero-visual figcaption{
  position:absolute;left:22px;right:22px;bottom:18px;z-index:2;
  font-size:13.5px;color:var(--muted);
}
.hero-visual figcaption strong{display:block;color:var(--text);font-size:15px;font-weight:600;margin-bottom:2px}

@media (max-width:991px){
  .hero-inner{grid-template-columns:1fr;gap:36px;padding:56px 0 52px}
  .hero-visual img{aspect-ratio:16/9}
}
@media (max-width:575px){
  .page-hero h1{font-size:30px}
  .hero-sub{font-size:16px}
}

/* ============ 板块 ============ */
.section{padding:88px 0}
.section.tight{padding:64px 0}
.section.alt{background:linear-gradient(180deg, rgba(14,23,48,.55), rgba(7,12,28,0));border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-label{font-size:13px;letter-spacing:1.4px;color:var(--cyan);margin-bottom:12px;display:block}
.section-head h2{font-size:clamp(24px,2.6vw,32px);font-weight:600;margin-bottom:14px}
.section-head p{color:var(--muted);font-size:15.5px;line-height:1.85}
@media (max-width:991px){
  .section{padding:64px 0}
  .section.tight{padding:52px 0}
}
@media (max-width:575px){
  .section{padding:52px 0}
  .section.tight{padding:44px 0}
}

/* 栏目说明 */
.intro-panel{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:34px 36px;display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:36px;align-items:start;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.intro-panel h2{font-size:22px;font-weight:600;margin-bottom:14px}
.intro-panel p{color:var(--muted);font-size:15.5px;line-height:1.9}
.intro-facts{border-left:1px solid var(--line);padding-left:28px;display:flex;flex-direction:column;gap:18px}
.intro-facts .fact strong{display:block;font-size:22px;font-weight:700;color:var(--cyan);font-variant-numeric:tabular-nums;line-height:1.4}
.intro-facts .fact span{font-size:13.5px;color:var(--dim)}
@media (max-width:991px){
  .intro-panel{grid-template-columns:1fr;padding:28px 24px;gap:26px}
  .intro-facts{border-left:none;border-top:1px solid var(--line);padding-left:0;padding-top:22px;flex-direction:row;flex-wrap:wrap;gap:28px}
}

/* ============ 指南卡片（3 列） ============ */
.guide-card{
  height:100%;display:flex;flex-direction:column;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh);
  transition:transform 220ms ease,box-shadow 220ms ease,border-color 220ms ease,background-color 220ms ease;
}
.guide-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(61,220,200,.45);background:var(--glass-strong)}
.card-media{position:relative;overflow:hidden;background:linear-gradient(140deg,rgba(61,220,200,.18),rgba(140,123,255,.22))}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 400ms ease}
.guide-card:hover .card-media img{transform:scale(1.03)}
.card-media::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(7,12,28,.72),transparent 58%)}
.card-body-in{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.card-top{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.guide-card h3{font-size:18px;font-weight:600;line-height:1.5;margin-bottom:10px}
.guide-card .card-desc{color:var(--muted);font-size:14.5px;line-height:1.8;margin-bottom:18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line-soft);padding-top:14px}
.card-foot .meta{font-size:13px;color:var(--dim);font-variant-numeric:tabular-nums}
.card-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--cyan);font-weight:600}
.card-link:hover{color:#6ff0dd;text-decoration:underline;text-underline-offset:4px}
.card-link svg{width:14px;height:14px;transition:transform var(--ease)}
.card-link:hover svg{transform:translateX(3px)}

/* ============ 准备顺序（步骤） ============ */
.step-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.step-item{
  position:relative;padding:26px 22px 24px;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);
  transition:border-color var(--ease),transform var(--ease),background-color var(--ease);
}
.step-item:hover{border-color:rgba(61,220,200,.45);transform:translateY(-2px);background:var(--glass-strong)}
.step-num{
  font-size:14px;font-weight:700;color:var(--violet);letter-spacing:1px;
  font-variant-numeric:tabular-nums;display:block;margin-bottom:14px;
}
.step-item h3{font-size:17px;font-weight:600;margin-bottom:10px}
.step-item p{color:var(--muted);font-size:14.5px;line-height:1.8}
@media (max-width:991px){.step-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:575px){.step-grid{grid-template-columns:1fr}}

/* ============ 参数速查 ============ */
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.stat-card{
  background:linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.03));
  border:1px solid var(--line);border-radius:var(--r-md);padding:26px 22px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.stat-card:hover{border-color:rgba(242,180,87,.42);box-shadow:0 10px 30px rgba(0,0,0,.4)}
.stat-card strong{display:block;font-size:28px;font-weight:700;color:var(--gold);font-variant-numeric:tabular-nums;line-height:1.25;margin-bottom:8px}
.stat-card h3{font-size:15px;font-weight:600;margin-bottom:8px}
.stat-card p{font-size:13.5px;color:var(--dim);line-height:1.75}
@media (max-width:991px){.stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:575px){.stat-grid{grid-template-columns:1fr}}

/* ============ FAQ ============ */
.faq-wrap{max-width:800px;margin:0 auto}
.faq-item{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-sm);
  margin-bottom:8px;overflow:hidden;transition:border-color var(--ease),background-color var(--ease);
}
.faq-item[open]{border-color:rgba(61,220,200,.4);background:var(--glass-strong)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px 18px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";width:12px;height:12px;flex-shrink:0;
  background:
    linear-gradient(var(--cyan),var(--cyan)) center/12px 2px no-repeat,
    linear-gradient(var(--cyan),var(--cyan)) center/2px 12px no-repeat;
  transition:transform 240ms ease;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-answer{
  position:relative;padding:0 22px 20px 24px;color:var(--muted);font-size:15px;line-height:1.85;
  border-left:2px solid var(--cyan);margin-left:24px;padding-left:18px;
}
.faq-item[open] .faq-answer{padding-top:2px}

/* ============ CTA 通栏 ============ */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:linear-gradient(120deg, rgba(61,220,200,.10), rgba(140,123,255,.14));
  border:1px solid var(--line);border-radius:var(--r-lg);
  padding:32px 36px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.cta-bar h2{font-size:22px;font-weight:600;margin-bottom:8px}
.cta-bar p{color:var(--muted);font-size:14.5px}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.icon-btn{
  width:46px;height:46px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:var(--glass);color:var(--muted);
  display:inline-flex;align-items:center;justify-content:center;
  transition:color var(--ease),border-color var(--ease),background-color var(--ease);
}
.icon-btn:hover{color:var(--cyan);border-color:rgba(61,220,200,.5);background:rgba(61,220,200,.1)}
.icon-btn svg{width:18px;height:18px}
.btn-main.is-saved{background:transparent;border:1px solid var(--gold);color:var(--gold);box-shadow:none}
.btn-main.is-saved:hover{background:rgba(242,180,87,.12);color:var(--gold);box-shadow:none}

/* ============ 相关分类 ============ */
.related-bar{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  border-top:1px solid var(--line-soft);padding-top:28px;margin-top:8px;
}
.related-bar .related-title{font-size:14px;color:var(--dim);margin-right:6px}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:999px;border:1px solid var(--line);
  background:var(--glass);color:var(--muted);font-size:14.5px;
  transition:color var(--ease),border-color var(--ease),background-color var(--ease),transform var(--ease);
}
.pill:hover{color:var(--cyan);border-color:rgba(61,220,200,.5);background:rgba(61,220,200,.1);transform:translateY(-1px)}

/* ============ 页脚 ============ */
.site-footer{
  background:linear-gradient(180deg, rgba(14,23,48,.6), rgba(7,12,28,1));
  border-top:1px solid var(--line-soft);padding:64px 0 0;margin-top:24px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{color:var(--muted);font-size:14px;line-height:1.85;max-width:32em}
.footer-col h4{font-size:14px;color:var(--gold);margin-bottom:16px;letter-spacing:.5px;font-weight:600}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:var(--muted)}
.footer-col ul a:hover{color:var(--cyan)}
.footer-note{font-size:14px;color:var(--muted);line-height:1.85}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--line-soft);
  padding:20px 0 26px;display:flex;align-items:center;justify-content:space-between;
  gap:14px;flex-wrap:wrap;font-size:13px;color:var(--dim);
}
@media (max-width:991px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* 回到顶部 */
.to-top{
  position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:50%;
  border:1px solid var(--line);background:rgba(14,23,48,.85);color:var(--muted);
  display:inline-flex;align-items:center;justify-content:center;
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity 240ms ease,transform 240ms ease,visibility 240ms ease,color var(--ease),border-color var(--ease);
  z-index:1030;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{color:var(--cyan);border-color:rgba(61,220,200,.5)}
.to-top svg{width:16px;height:16px}
@media (max-width:575px){.to-top{right:14px;bottom:16px}}

/* roulang page: category3 */
:root{
  --sky-bg:#070C1C;
  --sky-panel:#0E1730;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.09);
  --line:rgba(160,190,255,.14);
  --line-soft:rgba(160,190,255,.10);
  --cyan:#3DDCC8;
  --violet:#8C7BFF;
  --gold:#F2B457;
  --gold-1:#F7CE85;
  --gold-2:#E0A23C;
  --text:#E8EDF7;
  --text-2:#9AA9C4;
  --text-3:#6C7A99;
  --warn:#FF7A8A;
  --r-lg:18px;
  --r:16px;
  --r-sm:12px;
  --shadow:0 8px 30px rgba(0,0,0,.45);
  --shadow-hover:0 12px 36px rgba(0,0,0,.55),0 0 24px rgba(61,220,200,.22);
  --bs-primary:#3DDCC8;
  --bs-body-bg:#070C1C;
  --bs-body-color:#E8EDF7;
  --bs-link-color:#3DDCC8;
  --bs-link-hover-color:#7FE9DB;
  --bs-border-color:rgba(160,190,255,.14);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--sky-bg);
  color:var(--text);
  font-family:Inter,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  opacity:.5;
  background-image:
    radial-gradient(1.4px 1.4px at 12% 16%, rgba(232,237,247,.55), transparent 62%),
    radial-gradient(1.1px 1.1px at 76% 9%, rgba(61,220,200,.5), transparent 62%),
    radial-gradient(1px 1px at 44% 58%, rgba(232,237,247,.4), transparent 62%),
    radial-gradient(1.3px 1.3px at 88% 72%, rgba(140,123,255,.5), transparent 62%),
    radial-gradient(1px 1px at 22% 86%, rgba(232,237,247,.35), transparent 62%),
    radial-gradient(1.6px 1.6px at 62% 32%, rgba(242,180,87,.35), transparent 62%);
  background-size:420px 420px,520px 520px,360px 360px,600px 600px,480px 480px,700px 700px;
}
body::after{
  content:"";
  position:fixed;
  width:1300px;height:1300px;
  left:-360px;top:-620px;
  border-radius:50%;
  border:1px solid rgba(140,123,255,.10);
  box-shadow:inset 0 0 120px rgba(61,220,200,.05);
  z-index:0;
  pointer-events:none;
}
main,header.site-header,footer.site-footer{position:relative;z-index:1;}

h1,h2,h3,h4{font-weight:600;color:var(--text);margin:0;}
p{margin:0;}
a{color:var(--cyan);text-decoration:none;transition:color .16s ease;}
a:hover{color:#7FE9DB;}
img{max-width:100%;display:block;}
ul{list-style:none;margin:0;padding:0;}
button{font-family:inherit;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media (min-width:1400px){.container{max-width:1280px;}}

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:6px;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1040;
  background:rgba(7,12,28,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-soft);
  transition:background .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.site-header.is-scrolled{
  background:rgba(7,12,28,.94);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.45);
}
.header-inner{
  height:72px;
  display:flex;
  align-items:center;
  gap:24px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--text);
  text-decoration:none;
}
.brand:hover{color:var(--text);}
.brand-mark{
  width:30px;height:30px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex:0 0 auto;
}
.brand-mark svg{width:100%;height:100%;}
.brand-text{
  font-size:17px;
  font-weight:600;
  letter-spacing:.5px;
  white-space:nowrap;
}
.nav-channels{
  display:flex;
  align-items:center;
  gap:26px;
  margin-left:8px;
}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--text-2);
  padding:6px 0;
  white-space:nowrap;
  transition:color .16s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;
  bottom:0;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--text);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}

.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
}
.nav-search{
  position:relative;
  display:flex;
  align-items:center;
}
.nav-search i{
  position:absolute;
  left:14px;
  font-size:13px;
  color:var(--text-3);
  pointer-events:none;
}
.nav-search input{
  width:200px;
  height:40px;
  padding:0 14px 0 36px;
  border-radius:999px;
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--text);
  font-size:14px;
  transition:border-color .16s ease,box-shadow .16s ease,background .16s ease;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search input:focus{
  outline:none;
  border-color:var(--cyan);
  background:rgba(61,220,200,.06);
  box-shadow:0 0 0 3px rgba(61,220,200,.18);
}
.nav-text-link{
  font-size:14px;
  color:var(--text-2);
  white-space:nowrap;
}
.nav-text-link:hover{color:var(--cyan);}

.btn-gold,.btn-ghost,.btn-soft{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:12px;
  font-weight:600;
  font-size:14px;
  line-height:1;
  padding:12px 20px;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .16s ease,box-shadow .16s ease,background .16s ease,border-color .16s ease,color .16s ease;
}
.btn-gold{
  background:linear-gradient(135deg,var(--gold-1),var(--gold-2));
  color:#0A1024;
  box-shadow:0 0 18px rgba(242,180,87,.22);
}
.btn-gold:hover{
  color:#0A1024;
  transform:translateY(-1px);
  box-shadow:0 8px 28px rgba(242,180,87,.38),0 0 26px rgba(242,180,87,.32);
}
.btn-gold:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;
  border-color:rgba(61,220,200,.55);
  color:var(--cyan);
}
.btn-ghost:hover{
  background:rgba(61,220,200,.12);
  border-color:var(--cyan);
  color:#7FE9DB;
  transform:translateY(-1px);
}
.btn-ghost:active{transform:translateY(1px);}
.btn-soft{
  background:var(--glass);
  border-color:var(--line);
  color:var(--text);
}
.btn-soft:hover{background:var(--glass-strong);border-color:rgba(61,220,200,.45);color:var(--text);}
.btn-lg-x{padding:15px 30px;font-size:15px;}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:12px;
  color:var(--text);
  font-size:17px;
  cursor:pointer;
}

/* offcanvas 抽屉 */
.offcanvas.sky-drawer{
  background:rgba(10,16,36,.97);
  backdrop-filter:blur(16px);
  color:var(--text);
  border-left:1px solid var(--line);
  width:min(360px,88vw);
}
.sky-drawer .offcanvas-header{
  border-bottom:1px solid var(--line-soft);
  padding:18px 20px;
}
.sky-drawer .offcanvas-title{font-size:16px;font-weight:600;}
.sky-drawer .btn-close{
  filter:invert(1) grayscale(1);
  opacity:.7;
}
.sky-drawer .offcanvas-body{padding:20px;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:20px;}
.drawer-nav a{
  display:block;
  padding:13px 14px;
  border-radius:12px;
  color:var(--text-2);
  font-size:15px;
  border:1px solid transparent;
  transition:background .16s ease,color .16s ease,border-color .16s ease;
}
.drawer-nav a:hover,.drawer-nav a.active{
  background:var(--glass);
  border-color:var(--line);
  color:var(--text);
}
.drawer-nav a.active{border-left:2px solid var(--cyan);}
.drawer-actions{display:flex;flex-direction:column;gap:12px;padding-top:18px;border-top:1px solid var(--line-soft);}
.drawer-actions .btn-ghost,.drawer-actions .btn-gold{width:100%;padding:14px 20px;min-height:44px;}
.drawer-search{position:relative;display:flex;align-items:center;margin-bottom:18px;}
.drawer-search i{position:absolute;left:14px;font-size:13px;color:var(--text-3);}
.drawer-search input{
  width:100%;height:44px;padding:0 14px 0 38px;
  border-radius:12px;background:var(--glass);
  border:1px solid var(--line);color:var(--text);font-size:14px;
}
.drawer-search input:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(61,220,200,.18);}

/* ============ 页面 Hero ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line-soft);
  padding:64px 0 72px;
  background-image:linear-gradient(180deg,rgba(7,12,28,.72) 0%,rgba(7,12,28,.88) 60%,var(--sky-bg) 100%),url("/assets/images/backpic/back-3.webp");
  background-size:cover;
  background-position:center;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-180px;top:-220px;
  width:640px;height:640px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(140,123,255,.18),rgba(61,220,200,.08) 45%,transparent 70%);
  pointer-events:none;
}
.breadcrumb-line{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:20px;
}
.breadcrumb-line a{color:var(--text-2);}
.breadcrumb-line a:hover{color:var(--cyan);}
.breadcrumb-line .sep{color:var(--text-3);opacity:.65;}
.breadcrumb-line .cur{color:var(--text-2);}

.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:48px;
  align-items:start;
  position:relative;
  z-index:1;
}
.page-hero h1{
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.25;
  letter-spacing:.5px;
  font-weight:700;
  margin-bottom:18px;
}
.page-hero .hero-lead{
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  max-width:38em;
  margin-bottom:26px;
}
.tag-strip{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  margin-bottom:28px;
  font-size:13px;
  color:var(--text-2);
}
.tag-strip span{
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.tag-strip span + span::before{
  content:"";
  display:inline-block;
  width:1px;height:12px;
  background:var(--line);
  margin-right:14px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;}

.hero-aside{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:24px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.hero-aside h2{
  font-size:16px;
  font-weight:600;
  margin-bottom:16px;
  display:flex;
  align-items:center;
  gap:8px;
}
.hero-aside h2 i{color:var(--cyan);font-size:14px;}
.hero-aside ul{display:flex;flex-direction:column;}
.hero-aside li{
  display:flex;
  justify-content:space-between;
  gap:16px;
  padding:11px 0;
  border-bottom:1px solid var(--line-soft);
  font-size:14px;
  color:var(--text-2);
}
.hero-aside li:last-child{border-bottom:none;padding-bottom:0;}
.hero-aside li b{color:var(--text);font-weight:600;font-variant-numeric:tabular-nums;}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:40px;
}
.section-title{
  font-size:clamp(24px,2.6vw,32px);
  line-height:1.3;
  letter-spacing:.3px;
}
.section-title .mark{
  display:inline-block;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--cyan);
  margin-right:10px;
  vertical-align:middle;
  box-shadow:0 0 12px rgba(61,220,200,.7);
}
.section-desc{
  margin-top:12px;
  font-size:15px;
  color:var(--text-2);
  max-width:38em;
}
.section-side{font-size:14px;color:var(--text-2);}

/* 数据通栏 */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line-soft);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
}
.stat-cell{
  background:rgba(14,23,48,.72);
  padding:26px 24px;
  transition:background .2s ease;
}
.stat-cell:hover{background:rgba(20,32,64,.85);}
.stat-cell .num{
  font-size:26px;
  font-weight:700;
  color:var(--text);
  font-variant-numeric:tabular-nums;
  letter-spacing:.5px;
}
.stat-cell .num em{
  font-style:normal;
  font-size:14px;
  color:var(--cyan);
  margin-left:6px;
  font-weight:600;
}
.stat-cell .lbl{
  margin-top:8px;
  font-size:13px;
  color:var(--text-2);
  line-height:1.7;
}

/* 筛选胶囊 */
.filter-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:40px;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 18px;
  border-radius:999px;
  font-size:13px;
  color:var(--text-2);
  background:var(--glass);
  border:1px solid var(--line);
  transition:all .16s ease;
}
.chip:hover{
  color:var(--text);
  border-color:rgba(61,220,200,.45);
  background:rgba(61,220,200,.10);
}
.chip.active{
  color:#0A1024;
  background:linear-gradient(135deg,var(--gold-1),var(--gold-2));
  border-color:transparent;
  font-weight:600;
}

/* ============ 时间线 ============ */
.timeline{
  position:relative;
  padding-left:38px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:9px;
  top:8px;
  bottom:8px;
  width:2px;
  border-radius:2px;
  background:linear-gradient(180deg,rgba(61,220,200,.6),rgba(140,123,255,.4) 42%,rgba(160,190,255,.10) 82%,rgba(160,190,255,0));
}
.tl-item{position:relative;padding-bottom:32px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";
  position:absolute;
  left:-29px;
  top:16px;
  width:10px;height:10px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 5px rgba(61,220,200,.16),0 0 14px rgba(61,220,200,.55);
}
.tl-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  margin-bottom:12px;
}
.tl-date{
  font-size:13px;
  color:var(--text-2);
  font-variant-numeric:tabular-nums;
  letter-spacing:.6px;
  min-width:92px;
}
.badge-soft{
  display:inline-flex;
  align-items:center;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  line-height:1.6;
  font-weight:600;
  letter-spacing:.3px;
}
.badge-violet{background:rgba(140,123,255,.16);color:#B8ACFF;}
.badge-cyan{background:rgba(61,220,200,.14);color:#6FE7D6;}
.badge-gold{background:rgba(242,180,87,.16);color:#F5C57F;}

.tl-card{
  display:flex;
  gap:24px;
  align-items:stretch;
  padding:22px 24px;
  border-radius:var(--r);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.tl-card:hover{
  transform:translateY(-2px);
  border-color:rgba(61,220,200,.45);
  box-shadow:var(--shadow-hover);
}
.tl-body{flex:1 1 auto;min-width:0;}
.tl-title{
  font-size:18px;
  font-weight:600;
  line-height:1.5;
  margin-bottom:10px;
}
.tl-title a{color:var(--text);}
.tl-title a:hover{color:var(--cyan);}
.tl-sum{
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
  margin-bottom:14px;
}
.tl-foot{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--text-3);
  border-top:1px solid var(--line-soft);
  padding-top:12px;
}
.tl-foot .tl-arrow{color:var(--cyan);display:inline-flex;align-items:center;gap:6px;font-weight:600;}
.tl-foot .tl-arrow i{font-size:11px;transition:transform .2s ease;}
.tl-card:hover .tl-foot .tl-arrow i{transform:translateX(4px);}
.tl-thumb{
  flex:0 0 210px;
  width:210px;
  border-radius:14px;
  overflow:hidden;
  position:relative;
  background:linear-gradient(135deg,rgba(61,220,200,.22),rgba(140,123,255,.22));
}
.tl-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  aspect-ratio:16/10;
  transition:transform .4s ease;
}
.tl-card:hover .tl-thumb img{transform:scale(1.03);}
.tl-thumb::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,28,.05),rgba(7,12,28,.5));
  pointer-events:none;
}

/* ============ 流程步骤 ============ */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.step{
  padding:26px 22px;
  border-radius:var(--r);
  background:var(--glass);
  border:1px solid var(--line);
  position:relative;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.step:hover{
  transform:translateY(-2px);
  border-color:rgba(140,123,255,.5);
  box-shadow:var(--shadow-hover);
}
.step .idx{
  font-size:13px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  color:var(--violet);
  letter-spacing:1.2px;
  margin-bottom:14px;
  display:block;
}
.step h3{font-size:17px;margin-bottom:10px;}
.step p{font-size:14px;line-height:1.8;color:var(--text-2);}

/* ============ FAQ ============ */
.faq-wrap{max-width:800px;margin:0 auto;}
.accordion-item.faq-item{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  margin-bottom:8px;
  overflow:hidden;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.accordion-item.faq-item:last-child{margin-bottom:0;}
.faq-item .accordion-button{
  position:relative;
  background:transparent;
  color:var(--text);
  font-size:16px;
  font-weight:600;
  line-height:1.6;
  padding:18px 56px 18px 22px;
  border:none;
  box-shadow:none;
}
.faq-item .accordion-button::after{display:none;}
.faq-item .accordion-button::before{
  content:"＋";
  position:absolute;
  right:20px;
  top:50%;
  transform:translateY(-50%);
  color:var(--cyan);
  font-size:17px;
  line-height:1;
  transition:transform .24s ease,color .2s ease;
}
.faq-item .accordion-button:not(.collapsed)::before{
  transform:translateY(-50%) rotate(45deg);
  color:var(--gold);
}
.faq-item .accordion-button:not(.collapsed){
  color:var(--cyan);
  background:rgba(61,220,200,.05);
}
.faq-item .accordion-button:focus{box-shadow:none;}
.faq-item .accordion-button:hover{background:var(--glass-strong);}
.faq-item .accordion-body{
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
  padding:4px 24px 22px 22px;
  border-left:2px solid var(--cyan);
  margin-left:0;
}
.faq-item .accordion-button:not(.collapsed) + .accordion-collapse .accordion-body,
.faq-item .accordion-collapse.show .accordion-body{border-left-color:var(--cyan);}

/* ============ 相关分类横条 ============ */
.related-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  padding:22px 24px;
  border-radius:var(--r);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.related-bar .rb-label{
  font-size:14px;
  color:var(--text-2);
  margin-right:6px;
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.related-bar .rb-label i{color:var(--violet);font-size:13px;}
.pill-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 18px;
  border-radius:999px;
  font-size:14px;
  color:var(--text);
  background:rgba(140,123,255,.10);
  border:1px solid rgba(140,123,255,.35);
  transition:all .16s ease;
}
.pill-link:hover{
  color:#0A1024;
  background:linear-gradient(135deg,var(--gold-1),var(--gold-2));
  border-color:transparent;
  transform:translateY(-1px);
  box-shadow:0 0 22px rgba(242,180,87,.3);
}
.pill-link i{font-size:11px;}

/* ============ 订阅 CTA ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(135deg,rgba(20,32,64,.92),rgba(10,16,36,.92));
  padding:38px 40px;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:32px;
  align-items:center;
  box-shadow:var(--shadow);
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-120px;top:-140px;
  width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(61,220,200,.22),transparent 68%);
  pointer-events:none;
}
.cta-band h2{
  font-size:clamp(21px,2.2vw,27px);
  line-height:1.35;
  margin-bottom:10px;
  position:relative;
}
.cta-band p{
  font-size:15px;
  color:var(--text-2);
  position:relative;
}
.cta-form-zone{position:relative;}
.inline-form{
  display:flex;
  gap:12px;
  align-items:stretch;
  flex-wrap:wrap;
}
.inline-form input{
  flex:1 1 240px;
  min-width:0;
  height:48px;
  padding:0 18px;
  border-radius:12px;
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--text);
  font-size:15px;
  transition:border-color .16s ease,box-shadow .16s ease;
}
.inline-form input::placeholder{color:var(--text-3);}
.inline-form input:focus{
  outline:none;
  border-color:var(--cyan);
  box-shadow:0 0 0 3px rgba(61,220,200,.18);
}
.inline-form .btn-gold{height:48px;padding:0 26px;flex:0 0 auto;}
.form-hint{
  font-size:13px;
  color:var(--warn);
  margin-top:6px;
  min-height:18px;
}
.form-note{
  font-size:13px;
  color:var(--text-3);
  margin-top:8px;
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:24px;
  border-top:1px solid var(--line-soft);
  background:linear-gradient(180deg,rgba(10,16,36,.6),rgba(7,12,28,.98));
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{
  font-size:14px;
  line-height:1.8;
  color:var(--text-2);
  max-width:32em;
}
.footer-col h4{
  font-size:14px;
  color:var(--gold);
  letter-spacing:.6px;
  margin-bottom:18px;
  font-weight:600;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{
  font-size:14px;
  color:var(--text-2);
}
.footer-col a:hover{color:var(--cyan);}
.footer-note{
  font-size:14px;
  line-height:1.85;
  color:var(--text-2);
}
.footer-bottom{
  border-top:1px solid var(--line-soft);
  padding:20px 0 26px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  align-items:center;
  font-size:13px;
  color:var(--text-3);
}

/* 回到顶部 */
.to-top{
  position:fixed;
  right:24px;
  bottom:28px;
  width:46px;height:46px;
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:rgba(14,23,48,.85);
  border:1px solid var(--line);
  color:var(--cyan);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .24s ease,transform .24s ease,visibility .24s ease,border-color .2s ease;
  z-index:1030;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{border-color:var(--cyan);color:#7FE9DB;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav-search input{width:160px;}
  .nav-channels{gap:20px;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-col:last-child{grid-column:span 3;}
}

@media (max-width:991px){
  .nav-channels,.header-actions{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{height:60px;}
  .hero-grid{grid-template-columns:1fr;}
  .page-hero{padding:44px 0 52px;}
  .section{padding:60px 0;}
  .section-tight{padding:48px 0;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .cta-band{grid-template-columns:1fr;padding:32px 26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-col:last-child{grid-column:span 2;}
}

@media (max-width:767px){
  body{font-size:16px;}
  .container{padding-left:16px;padding-right:16px;}
  .page-hero h1{font-size:clamp(30px,7vw,34px);}
  .timeline{padding-left:26px;}
  .timeline::before{left:5px;}
  .tl-item::before{left:-25px;width:9px;height:9px;top:14px;}
  .tl-card{flex-direction:column;padding:20px;}
  .tl-thumb{flex:0 0 auto;width:100%;order:-1;}
  .tl-thumb img{aspect-ratio:16/9;}
  .tl-date{min-width:0;}
  .steps{grid-template-columns:1fr;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:28px;}
  .stat-strip{grid-template-columns:1fr;}
  .stat-cell{padding:20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-col:last-child{grid-column:span 1;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-band{padding:26px 20px;}
  .inline-form .btn-gold{width:100%;}
  .related-bar{padding:18px;}
  .related-bar .rb-label{width:100%;margin-bottom:4px;}
  .to-top{right:16px;bottom:18px;}
  .faq-item .accordion-button{font-size:15px;padding:16px 48px 16px 18px;}
}

/* roulang page: category4 */
:root{
  --bg:#070C1C;
  --panel:#0E1730;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.085);
  --line:rgba(160,190,255,.14);
  --line-soft:rgba(160,190,255,.10);
  --cyan:#3DDCC8;
  --violet:#8C7BFF;
  --gold:#F2B457;
  --gold-1:#F7CE85;
  --gold-2:#E0A23C;
  --text:#E8EDF7;
  --muted:#9AA9C4;
  --dim:#6C7A99;
  --warn:#FF7A8A;
  --r-lg:18px;
  --r-md:16px;
  --r-sm:12px;
  --shadow:0 8px 30px rgba(0,0,0,.45);
  --shadow-hover:0 12px 36px rgba(0,0,0,.55), 0 0 24px rgba(61,220,200,.22);
  --max:1200px;
  --t:160ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    radial-gradient(circle, rgba(232,237,247,.075) 1px, transparent 1px),
    radial-gradient(circle, rgba(61,220,200,.06) 1px, transparent 1px);
  background-size:130px 130px, 190px 190px;
  background-position:0 0, 65px 95px;
  opacity:.5;
}
header,main,footer,.to-top{position:relative;z-index:1}
img{max-width:100%;display:block}
a{color:var(--cyan);text-decoration:none;transition:color var(--t), opacity var(--t)}
a:hover{color:#6BEBDA}
h1,h2,h3,h4{line-height:1.35;color:var(--text);margin:0}
p{margin:0 0 16px}
ul,ol{padding-left:0}
::selection{background:rgba(61,220,200,.28);color:#fff}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;box-shadow:0 0 0 4px rgba(61,220,200,.18)}
.container{width:100%;max-width:var(--max);margin:0 auto;padding-left:24px;padding-right:24px}
@media (min-width:1400px){.container{max-width:1280px}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(7,12,28,.62);
  border-bottom:1px solid var(--line-soft);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:background var(--t), box-shadow var(--t);
}
.site-header.scrolled{background:rgba(7,12,28,.9);box-shadow:0 10px 30px rgba(0,0,0,.4)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);flex-shrink:0}
.brand:hover{color:var(--text)}
.brand-mark{width:30px;height:30px;display:inline-flex}
.brand-mark svg{width:100%;height:100%}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.5px;white-space:nowrap}
.nav-channels{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-link{
  position:relative;
  padding:6px 2px;
  font-size:15px;
  color:var(--muted);
  text-decoration:none;
  white-space:nowrap;
  transition:color var(--t);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  border-radius:2px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--t);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--text)}
.nav-link.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-box{
  display:flex;
  align-items:center;
  gap:8px;
  height:38px;
  width:200px;
  padding:0 14px;
  border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  transition:border-color var(--t), box-shadow var(--t), background var(--t);
}
.search-box:focus-within{border-color:var(--cyan);background:rgba(255,255,255,.08);box-shadow:0 0 0 3px rgba(61,220,200,.16)}
.search-box svg{width:15px;height:15px;flex-shrink:0;stroke:var(--dim)}
.search-box input{width:100%;background:transparent;border:0;outline:none;color:var(--text);font-size:14px;font-family:inherit}
.search-box input::placeholder{color:var(--dim)}
.link-entry{font-size:14px;color:var(--muted);text-decoration:none;white-space:nowrap}
.link-entry:hover{color:var(--cyan)}
.btn-ghost-sm,.btn-gold-sm{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:38px;
  padding:0 18px;
  border-radius:12px;
  font-size:14px;
  font-weight:600;
  white-space:nowrap;
  transition:transform var(--t), box-shadow var(--t), background var(--t), color var(--t), border-color var(--t);
}
.btn-ghost-sm{background:transparent;border:1px solid rgba(61,220,200,.55);color:var(--cyan)}
.btn-ghost-sm:hover{background:rgba(61,220,200,.12);color:var(--cyan);border-color:var(--cyan)}
.btn-gold-sm{
  background:linear-gradient(135deg,var(--gold-1),var(--gold-2));
  color:#0A1024;
  border:0;
  box-shadow:0 0 16px rgba(242,180,87,.2);
}
.btn-gold-sm:hover{transform:translateY(-1px);box-shadow:0 0 26px rgba(242,180,87,.42);color:#0A1024}
.btn-gold-sm:active{transform:translateY(1px)}
.menu-toggle{
  display:none;
  width:40px;height:40px;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  color:var(--text);
  cursor:pointer;
}
.menu-toggle:hover{border-color:rgba(61,220,200,.45)}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}

.drawer{background:#0A1226;border-left:1px solid var(--line);color:var(--text)}
.drawer .offcanvas-header{border-bottom:1px solid var(--line-soft);padding:18px 20px}
.drawer .offcanvas-body{padding:20px}
.drawer-links{display:grid;gap:4px;margin-bottom:24px}
.drawer-links a{
  display:block;
  padding:13px 14px;
  border-radius:12px;
  color:var(--muted);
  font-size:16px;
  text-decoration:none;
  transition:background var(--t), color var(--t);
}
.drawer-links a:hover{background:var(--glass);color:var(--text)}
.drawer-links a.active{background:rgba(61,220,200,.1);color:var(--cyan)}
.drawer-search{display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;border-radius:12px;background:rgba(255,255,255,.05);border:1px solid var(--line);margin-bottom:16px}
.drawer-search input{width:100%;background:transparent;border:0;outline:none;color:var(--text);font-size:15px;font-family:inherit}
.drawer-actions{display:grid;gap:10px}
.drawer-actions .btn-ghost-sm,.drawer-actions .btn-gold-sm{width:100%;height:44px}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  padding:72px 0 76px;
  overflow:hidden;
  background-image:
    linear-gradient(180deg, rgba(7,12,28,.82) 0%, rgba(7,12,28,.94) 62%, var(--bg) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line-soft);
}
.page-hero::after{
  content:"";
  position:absolute;
  width:880px;height:880px;
  right:-300px;top:-460px;
  border-radius:50%;
  border:1px solid rgba(160,190,255,.10);
  pointer-events:none;
}
.crumb{font-size:13px;color:var(--muted);margin-bottom:18px}
.crumb a{color:var(--muted);text-decoration:none}
.crumb a:hover{color:var(--cyan)}
.crumb span{margin:0 8px;color:var(--dim)}
.hero-title{
  font-size:clamp(30px,4.2vw,46px);
  font-weight:700;
  letter-spacing:.5px;
  line-height:1.25;
  margin-bottom:18px;
}
.hero-sub{
  max-width:720px;
  font-size:16.5px;
  color:var(--muted);
  line-height:1.9;
  margin-bottom:26px;
}
.tag-strip{display:flex;flex-wrap:wrap;align-items:center;gap:0;margin-bottom:30px}
.tag-strip .tag{
  font-size:13.5px;
  color:var(--muted);
  padding:0 16px;
  position:relative;
}
.tag-strip .tag:first-child{padding-left:0}
.tag-strip .tag + .tag::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:1px;height:13px;
  transform:translateY(-50%);
  background:var(--line);
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}
.btn-gold,.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:12px;
  font-size:15px;
  font-weight:600;
  font-family:inherit;
  cursor:pointer;
  transition:transform var(--t), box-shadow var(--t), background var(--t), color var(--t), border-color var(--t);
}
.btn-gold{
  background:linear-gradient(135deg,var(--gold-1),var(--gold-2));
  color:#0A1024;
  border:0;
  box-shadow:0 0 18px rgba(242,180,87,.18);
}
.btn-gold:hover{transform:translateY(-1px);box-shadow:0 0 30px rgba(242,180,87,.42);color:#0A1024}
.btn-gold:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;
  border:1px solid rgba(61,220,200,.6);
  color:var(--cyan);
}
.btn-ghost:hover{background:rgba(61,220,200,.12);border-color:var(--cyan);color:var(--cyan)}

/* ---------- 板块 ---------- */
.section{padding:88px 0}
.section.tight{padding-top:64px}
.section-head{max-width:720px;margin-bottom:44px}
.eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:2px;
  color:var(--cyan);
  margin-bottom:12px;
}
.section-head h2{font-size:clamp(24px,2.6vw,32px);font-weight:600;margin-bottom:14px}
.section-head p{color:var(--muted);margin:0}

/* ---------- 两栏对照 ---------- */
.split{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:start}
.split-text h3{font-size:21px;font-weight:600;margin:0 0 14px}
.split-text p{color:var(--muted)}
.split-text ul{list-style:none;margin:0 0 26px;display:grid;gap:10px}
.split-text li{
  position:relative;
  padding-left:20px;
  color:var(--muted);
  font-size:15px;
}
.split-text li::before{
  content:"";
  position:absolute;
  left:0;top:13px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 8px rgba(61,220,200,.6);
}
.split-figure{
  margin:8px 0 0;
  border:1px solid var(--line);
  border-radius:14px;
  overflow:hidden;
  box-shadow:var(--shadow);
  position:relative;
}
.split-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.split-figure figcaption{
  font-size:13px;
  color:var(--dim);
  padding:12px 16px;
  border-top:1px solid var(--line-soft);
  background:rgba(7,12,28,.6);
}
.info-table{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:28px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.info-table h3{font-size:19px;font-weight:600;margin-bottom:6px}
.info-table .info-hint{font-size:13.5px;color:var(--dim);margin-bottom:18px}
.info-table dl{margin:0}
.info-row{
  display:grid;
  grid-template-columns:96px 1fr;
  gap:16px;
  padding:14px 0;
  border-bottom:1px solid var(--line-soft);
}
.info-row:last-child{border-bottom:0;padding-bottom:0}
.info-row dt{font-size:13.5px;color:var(--dim);font-weight:400}
.info-row dd{margin:0;font-size:15px;color:var(--text)}
.info-row dd strong{color:var(--cyan);font-weight:600}

/* ---------- 编号排行列表 ---------- */
.rank-list{border-top:1px solid var(--line-soft)}
.rank-item{
  position:relative;
  display:grid;
  grid-template-columns:64px minmax(0,1fr) 200px;
  gap:28px;
  align-items:center;
  padding:26px 16px 26px 20px;
  border-bottom:1px solid var(--line-soft);
  transition:background var(--t);
}
.rank-item::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:2px;
  background:var(--cyan);
  opacity:0;
  transition:opacity var(--t);
}
.rank-item:hover{background:var(--glass)}
.rank-item:hover::before{opacity:1}
.rank-no{
  font-family:Inter,ui-sans-serif,system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:26px;
  font-weight:700;
  color:var(--violet);
  letter-spacing:1px;
  line-height:1;
}
.rank-body h3{font-size:18px;font-weight:600;margin-bottom:8px}
.rank-body p{font-size:14.5px;color:var(--muted);margin:0;line-height:1.8}
.rank-metric{text-align:right}
.metric-label{display:block;font-size:12px;color:var(--dim);letter-spacing:.5px;margin-bottom:4px}
.metric-value{
  font-size:15px;
  font-weight:600;
  color:var(--cyan);
  font-variant-numeric:tabular-nums;
}

/* ---------- 流程步骤 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  border-top:1px solid var(--line-soft);
  border-bottom:1px solid var(--line-soft);
}
.step{
  padding:30px 26px;
  border-right:1px solid var(--line-soft);
  transition:background var(--t);
}
.step:last-child{border-right:0}
.step:hover{background:var(--glass)}
.step-no{
  font-family:Inter,ui-sans-serif,system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:13px;
  letter-spacing:1.5px;
  color:var(--gold);
  display:block;
  margin-bottom:14px;
}
.step h3{font-size:17.5px;font-weight:600;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--muted);margin:0;line-height:1.8}

/* ---------- FAQ ---------- */
.faq{max-width:800px;margin:0 auto}
.faq-item{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  margin-bottom:8px;
  overflow:hidden;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:border-color var(--t), box-shadow var(--t);
}
.faq-item:hover{border-color:rgba(61,220,200,.3)}
.faq-item.open{border-color:rgba(61,220,200,.42);box-shadow:inset 2px 0 0 var(--cyan)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  background:transparent;
  border:0;
  color:var(--text);
  font-size:16px;
  font-weight:600;
  font-family:inherit;
  text-align:left;
  cursor:pointer;
  transition:color var(--t);
}
.faq-q:hover{color:var(--cyan)}
.faq-icon{
  position:relative;
  width:16px;height:16px;
  flex-shrink:0;
  transition:transform .3s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--cyan);
  border-radius:2px;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .32s ease, padding .32s ease;
  padding:0 22px;
}
.faq-item.open .faq-a{max-height:460px;padding-bottom:20px}
.faq-a p{font-size:15px;line-height:1.8;color:var(--muted);margin:0}

/* ---------- 相关分类 ---------- */
.related-bar{padding:0 0 8px}
.related-inner{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:12px;
  padding:22px 26px;
  border:1px solid var(--line-soft);
  border-radius:var(--r-lg);
  background:rgba(255,255,255,.03);
}
.related-label{font-size:14px;color:var(--dim);margin-right:6px}
.pill{
  display:inline-flex;
  align-items:center;
  padding:9px 18px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--muted);
  font-size:14px;
  text-decoration:none;
  transition:color var(--t), border-color var(--t), background var(--t), transform var(--t);
}
.pill:hover{color:var(--cyan);border-color:rgba(61,220,200,.45);background:rgba(61,220,200,.08);transform:translateY(-1px)}

/* ---------- CTA 通栏 ---------- */
.cta-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:24px;
  padding:34px 36px;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:linear-gradient(120deg, rgba(14,23,48,.92), rgba(61,220,200,.10));
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.cta-bar h2{font-size:clamp(20px,2vw,24px);font-weight:600;margin-bottom:8px}
.cta-bar p{font-size:14.5px;color:var(--muted);margin:0;max-width:520px}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.icon-btn{
  width:46px;height:46px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--muted);
  cursor:pointer;
  transition:color var(--t), border-color var(--t), background var(--t), transform var(--t);
}
.icon-btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.icon-btn:hover{color:var(--cyan);border-color:rgba(61,220,200,.45);background:rgba(61,220,200,.1)}
.icon-btn:active{transform:translateY(1px)}
.fav-btn.is-fav{border-color:var(--gold);color:var(--gold);background:rgba(242,180,87,.1)}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;
  padding:64px 0 24px;
  border-top:1px solid var(--line-soft);
  background:rgba(7,12,28,.72);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand .brand{display:flex;align-items:center;gap:10px;color:var(--text);text-decoration:none}
.footer-brand p{font-size:14px;color:var(--muted);margin:16px 0 0;max-width:330px;line-height:1.8}
.footer-col h4{font-size:14px;font-weight:600;color:var(--gold);margin-bottom:16px}
.footer-col ul{list-style:none;margin:0;display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--muted);text-decoration:none}
.footer-col a:hover{color:var(--cyan)}
.footer-note{font-size:13.5px;color:var(--dim);line-height:1.85;margin:0}
.footer-bottom{
  margin-top:48px;
  padding-top:20px;
  border-top:1px solid var(--line-soft);
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--dim);
}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;
  right:24px;
  bottom:24px;
  width:46px;height:46px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  border:1px solid var(--line);
  background:rgba(14,23,48,.9);
  color:var(--cyan);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .3s ease, transform .3s ease, visibility .3s ease, border-color var(--t);
  backdrop-filter:blur(10px);
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:rgba(61,220,200,.5)}
.to-top svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .search-box{display:none}
  .split{grid-template-columns:1fr;gap:40px}
}
@media (max-width:991px){
  .nav-channels{display:none}
  .header-actions .link-entry,
  .header-actions .btn-ghost-sm,
  .header-actions .btn-gold-sm{display:none}
  .menu-toggle{display:inline-flex}
  .header-inner{height:60px}
  .section{padding:64px 0}
  .page-hero{padding:52px 0 56px}
  .rank-item{grid-template-columns:48px minmax(0,1fr);gap:18px;padding:22px 12px 22px 16px}
  .rank-metric{grid-column:2;text-align:left;margin-top:12px}
  .metric-label{display:inline;margin-right:8px}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step:nth-child(2){border-right:0}
  .step:nth-child(1),.step:nth-child(2){border-bottom:1px solid var(--line-soft)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding-left:16px;padding-right:16px}
  .section{padding:52px 0}
  .hero-sub{font-size:15.5px}
  .tag-strip{gap:8px 0}
  .tag-strip .tag{font-size:13px;padding:0 12px}
  .btn-gold,.btn-ghost{width:100%;min-height:46px}
  .hero-cta{width:100%}
  .steps{grid-template-columns:1fr}
  .step{border-right:0;border-bottom:1px solid var(--line-soft)}
  .step:last-child{border-bottom:0}
  .cta-bar{padding:26px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn-gold{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .to-top{right:16px;bottom:16px}
}