/* roulang page: index */
:root{
  --bg-0:#050B12;
  --bg-1:#0A141E;
  --bg-2:#0E1B26;
  --panel:rgba(255,255,255,.055);
  --panel-strong:rgba(255,255,255,.09);
  --line:rgba(255,255,255,.12);
  --brand:#19E3B1;
  --brand-deep:#0FA57F;
  --brand-2:#3B8CFF;
  --accent:#FFB020;
  --danger:#FF5C7A;
  --text-1:#ECF4F7;
  --text-2:#9DB0BC;
  --text-3:#6C8090;
  --r-card:16px;
  --r-img:20px;
  --r-btn:999px;
  --r-sm:12px;
  --shadow-card:0 18px 40px -20px rgba(0,0,0,.75);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --mono:ui-monospace,"DIN Alternate","SFMono-Regular",Menlo,monospace;
  --bs-primary:#19E3B1;
  --bs-primary-rgb:25,227,177;
  --bs-body-bg:#050B12;
  --bs-body-color:#ECF4F7;
  --bs-border-color:rgba(255,255,255,.12);
  --bs-border-radius:14px;
  --bs-border-radius-lg:16px;
  --bs-border-radius-sm:12px;
  --bs-link-color:#9DB0BC;
  --bs-link-hover-color:#19E3B1;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --bs-accordion-bg:transparent;
  --bs-accordion-border-color:rgba(255,255,255,.12);
  --bs-accordion-btn-color:#ECF4F7;
  --bs-accordion-active-bg:transparent;
  --bs-accordion-active-color:#19E3B1;
  --bs-accordion-btn-focus-box-shadow:0 0 0 2px rgba(59,140,255,.55);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  padding-top:68px;
  padding-bottom:78px;
  background-image:
    radial-gradient(900px 520px at 78% -8%, rgba(25,227,177,.10), transparent 62%),
    radial-gradient(760px 480px at 4% 12%, rgba(59,140,255,.10), transparent 60%),
    repeating-linear-gradient(0deg, rgba(255,255,255,.012) 0 1px, transparent 1px 3px);
}
img{max-width:100%;display:block}
a{color:var(--text-1);text-decoration:none;transition:color .14s cubic-bezier(.2,.7,.3,1),border-color .14s cubic-bezier(.2,.7,.3,1)}
a:hover{color:var(--brand)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em}
p{margin:0 0 18px}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px}

.container{max-width:1200px;padding-left:20px;padding-right:20px;margin:0 auto;width:100%}
.row{--bs-gutter-x:24px;--bs-gutter-y:24px}
.section{padding:96px 0}
.section-alt{background:var(--bg-1);border-top:1px solid rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.06)}
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;color:var(--brand);
  text-transform:none;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--brand),transparent)}
.h2{font-size:clamp(24px,3.4vw,34px);line-height:1.25;font-weight:700;margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:14px;line-height:1.75;margin:0}
.h3{font-size:20px;line-height:1.4;font-weight:600}
.lead-sm{color:var(--text-2);font-size:14px;line-height:1.75}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;height:68px;
  background:rgba(255,255,255,.05);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,.10);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.30),transparent);
}
.nav-wrap{height:68px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text-1)}
.brand:hover{color:var(--text-1)}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04241C;font-size:18px;
  box-shadow:0 10px 24px -12px rgba(25,227,177,.75);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-2);letter-spacing:.14em;margin-top:2px}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:12px}
.nav-link{
  padding:8px 14px;border-radius:999px;font-size:14px;color:var(--text-2);
  border:1px solid transparent;transition:all .14s cubic-bezier(.2,.7,.3,1);
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.10)}
.nav-link.active{color:var(--brand);background:rgba(25,227,177,.10);border-color:rgba(25,227,177,.32)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:18px}
.link-quiet{font-size:14px;color:var(--text-2);border-bottom:1px solid transparent;padding-bottom:2px}
.link-quiet:hover{color:var(--brand);border-bottom-color:var(--brand)}

/* ---------- buttons ---------- */
.btn-brand,.btn-ghost,.btn-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);font-size:14px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:transform .14s cubic-bezier(.2,.7,.3,1),box-shadow .14s cubic-bezier(.2,.7,.3,1),filter .14s,background .14s,color .14s;
}
.btn-brand{
  background:linear-gradient(135deg,#19E3B1,#12C79A);color:#04241C;
  box-shadow:0 0 0 1px rgba(25,227,177,.45),0 14px 34px -14px rgba(25,227,177,.6);
}
.btn-brand:hover{color:#04241C;transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(25,227,177,.6),0 18px 40px -14px rgba(25,227,177,.72)}
.btn-brand:active{transform:translateY(0);box-shadow:inset 0 2px 8px rgba(0,0,0,.28)}
.btn-ghost{
  background:rgba(255,255,255,.045);color:var(--text-1);border-color:var(--line);
}
.btn-ghost:hover{color:var(--brand);border-color:rgba(25,227,177,.42);background:rgba(25,227,177,.07);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-soft{
  background:rgba(255,255,255,.06);color:var(--text-1);border-color:var(--line);border-radius:var(--r-sm);padding:10px 18px;font-size:13px;
}
.btn-soft:hover{color:var(--brand);border-color:rgba(25,227,177,.4);background:rgba(25,227,177,.08)}
.btn-lg{padding:15px 30px;font-size:15px}

/* ---------- hero ---------- */
.hero{padding:72px 0 88px;position:relative;overflow:hidden}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;color:var(--brand);
  border:1px solid rgba(25,227,177,.28);background:rgba(25,227,177,.07);
  padding:6px 14px;border-radius:999px;margin-bottom:22px;
}
.hero h1{font-size:clamp(30px,5.2vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.02em;margin-bottom:18px}
.hero h1 span{color:var(--brand)}
.hero-sub{font-size:16px;color:var(--text-2);max-width:520px;margin-bottom:28px;line-height:1.75}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.flow-strip{
  display:flex;align-items:center;gap:0;flex-wrap:wrap;
  border:1px solid var(--line);background:var(--panel);border-radius:14px;
  padding:14px 18px;max-width:560px;
}
.flow-node{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-2);white-space:nowrap}
.flow-dot{width:8px;height:8px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px rgba(25,227,177,.16),0 0 12px rgba(25,227,177,.85)}
.flow-line{flex:1 1 22px;min-width:22px;height:1px;background:linear-gradient(90deg,rgba(25,227,177,.6),rgba(255,255,255,.10));margin:0 12px}
.hero-visual{position:relative;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--shadow-card);border:1px solid var(--line)}
.hero-visual img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,11,18,.15) 25%,rgba(5,11,18,.92) 100%);
}
.hero-visual .cap{
  position:absolute;left:22px;right:22px;bottom:18px;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.cap-title{font-size:14px;color:var(--text-1);font-weight:600}
.cap-note{font-size:12px;color:var(--text-2)}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:36px}
.timeline::before{
  content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,rgba(25,227,177,.85),rgba(59,140,255,.55) 55%,rgba(255,255,255,.05));
  box-shadow:0 0 18px rgba(25,227,177,.35);
}
.tl-item{position:relative;display:flex;gap:26px;align-items:flex-start;padding:22px 0}
.tl-item + .tl-item{border-top:1px solid rgba(255,255,255,.07)}
.tl-num{
  font-family:var(--mono);font-size:clamp(40px,6vw,56px);line-height:1;font-weight:700;
  color:transparent;-webkit-text-stroke:1px rgba(25,227,177,.55);flex:0 0 auto;min-width:78px;
}
.tl-body h3{margin-bottom:8px}
.tl-body p{color:var(--text-2);font-size:14px;line-height:1.75;margin:0;max-width:640px}

/* ---------- cards ---------- */
.glass{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);position:relative;overflow:hidden;
}
.glass::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.30),transparent);
}
.reward-card{display:block;height:100%;transition:border-color .16s,transform .16s}
.reward-card:hover{border-color:rgba(25,227,177,.35);transform:translateY(-2px);color:var(--text-1)}
.reward-card .thumb{position:relative;overflow:hidden;border-radius:var(--r-card) var(--r-card) 0 0;background:var(--bg-1)}
.reward-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s cubic-bezier(.2,.7,.3,1)}
.reward-card:hover .thumb img{transform:scale(1.03)}
.reward-body{padding:18px}
.reward-body h3{margin-bottom:8px;font-size:17px}
.reward-body p{color:var(--text-2);font-size:13px;line-height:1.7;margin:0}
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1;
  padding:5px 11px;border-radius:999px;border:1px solid transparent;
}
.badge-brand{color:var(--brand);background:rgba(25,227,177,.10);border-color:rgba(25,227,177,.32)}
.badge-accent{color:var(--accent);background:rgba(255,176,32,.10);border-color:rgba(255,176,32,.32)}
.badge-muted{color:var(--text-2);background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.14)}
.badge-float{position:absolute;top:12px;right:12px;z-index:3;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}

/* ---------- progress panel ---------- */
.progress-panel{padding:32px}
.pbar{height:10px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden;margin:20px 0 18px}
.pbar span{
  display:block;height:100%;width:64%;border-radius:999px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  box-shadow:0 0 18px rgba(25,227,177,.55);
}
.pnodes{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.pnode{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2)}
.pnode i{width:8px;height:8px;border-radius:50%;background:var(--text-3);display:inline-block}
.pnode.on i{background:var(--brand);box-shadow:0 0 12px rgba(25,227,177,.85)}
.pnode.on{color:var(--text-1)}

/* ---------- news ---------- */
.info-card{
  display:block;height:100%;padding:16px;border-radius:var(--r-card);
  background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:border-color .16s,transform .16s;position:relative;overflow:hidden;
}
.info-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);
}
.info-card:hover{border-color:rgba(25,227,177,.35);transform:translateY(-2px);color:var(--text-1)}
.info-thumb{border-radius:14px;overflow:hidden;background:var(--bg-1);margin-bottom:14px}
.info-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s cubic-bezier(.2,.7,.3,1)}
.info-card:hover .info-thumb img{transform:scale(1.03)}
.info-card .badge-pill{margin-bottom:10px}
.info-title{
  font-size:16px;font-weight:600;line-height:1.5;margin-bottom:8px;color:var(--text-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-sum{
  font-size:13px;color:var(--text-2);line-height:1.75;margin-bottom:14px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.info-foot{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);border-top:1px solid rgba(255,255,255,.07);padding-top:12px}
.info-foot i{color:var(--brand)}
.side-box{padding:20px;border-radius:var(--r-card);background:var(--panel);border:1px solid var(--line);margin-bottom:20px}
.side-box h3{font-size:15px;margin-bottom:14px;color:var(--text-1)}
.tag-list{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  font-size:12px;padding:5px 12px;border-radius:999px;color:var(--text-2);
  border:1px solid var(--line);background:rgba(255,255,255,.04);
}
.tag:hover{color:var(--brand);border-color:rgba(25,227,177,.4)}
.hot-item{display:flex;gap:12px;padding:12px 0;border-top:1px solid rgba(255,255,255,.07);font-size:13px;color:var(--text-2)}
.hot-item:first-of-type{border-top:0}
.hot-item b{font-family:var(--mono);color:var(--brand);font-weight:600}
.empty-state{text-align:center;padding:56px 20px;border:1px dashed var(--line);border-radius:var(--r-card);background:var(--panel)}
.empty-state i{font-size:34px;color:var(--text-3);display:block;margin-bottom:14px}
.empty-state p{color:var(--text-2);font-size:14px;margin-bottom:18px}

/* ---------- faq ---------- */
.faq-wrap{padding:10px 22px;border-radius:var(--r-card);background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow-card)}
.faq-item{border-bottom:1px solid rgba(255,255,255,.08)}
.faq-item:last-child{border-bottom:0}
.faq-btn{
  width:100%;background:transparent;border:0;padding:20px 0;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;color:var(--text-1);cursor:pointer;
}
.faq-btn:hover{color:var(--brand)}
.faq-btn .ico{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--brand);transition:transform .26s cubic-bezier(.2,.7,.3,1);
}
.faq-btn[aria-expanded="true"] .ico{transform:rotate(45deg)}
.faq-body{font-size:15px;line-height:1.8;color:var(--text-2);padding:0 0 20px;max-width:820px}
.collapse{transition:height .26s cubic-bezier(.2,.7,.3,1)}

/* ---------- cta ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  padding:32px;border-radius:var(--r-card);background:var(--panel-strong);
  border:1px solid var(--line);box-shadow:var(--shadow-card);position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(520px 200px at 88% 0%, rgba(25,227,177,.16), transparent 70%);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(20px,2.6vw,26px);margin-bottom:8px}
.cta-band p{color:var(--text-2);font-size:14px;margin:0}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:28px}
.stat{padding:18px;border-radius:14px;background:var(--panel);border:1px solid var(--line)}
.stat b{display:block;font-family:var(--mono);font-size:24px;color:var(--brand);line-height:1.2}
.stat span{font-size:13px;color:var(--text-2)}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-2);border-top:1px solid rgba(255,255,255,.09);padding:64px 0 28px;margin-top:96px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:34px;height:34px;font-size:16px}
.footer-brand strong{font-size:16px}
.footer-col h4{font-size:14px;letter-spacing:.04em;color:var(--text-1);margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:13px;color:var(--text-2);display:inline-block;transition:color .14s,transform .14s}
.footer-col a:hover{color:var(--brand);transform:translateX(2px)}
.footer-col p{font-size:13px;color:var(--text-2);line-height:1.8;margin:0 0 10px}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12px;color:var(--text-3);
}
.footer-note{margin-top:14px;font-size:12px;color:var(--text-3);line-height:1.8;max-width:900px}

/* ---------- mobile tab ---------- */
.tab-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1050;display:none;
  height:62px;padding-bottom:env(safe-area-inset-bottom);
  background:rgba(10,20,30,.86);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border-top:1px solid rgba(255,255,255,.12);
}
.tab-bar::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.26),transparent);
}
.tab-inner{height:62px;display:flex;align-items:center;justify-content:space-around}
.tab-item{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  font-size:11px;color:var(--text-3);position:relative;height:100%;
}
.tab-item i{font-size:19px}
.tab-item.active{color:var(--brand)}
.tab-item.active::before{
  content:"";position:absolute;top:0;width:22px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px rgba(25,227,177,.9);
}

@media (max-width:1199.98px){
  .nav-main{gap:0}
  .nav-link{padding:8px 10px;font-size:13px}
}
@media (max-width:991.98px){
  .nav-main,.nav-actions{display:none}
  .nav-wrap{gap:12px}
  .tab-bar{display:block}
  .section{padding:72px 0}
  .hero{padding:48px 0 64px}
  .hero-visual{margin-top:34px}
  .tl-num{min-width:60px}
}
@media (max-width:767.98px){
  .section{padding:64px 0}
  .stat-grid{grid-template-columns:1fr}
  .timeline{padding-left:24px}
  .timeline::before{left:4px}
  .tl-item{flex-direction:column;gap:10px;padding:18px 0}
  .progress-panel{padding:22px}
  .faq-wrap{padding:6px 16px}
  .cta-band{padding:24px}
}
@media (max-width:575.98px){
  body{font-size:15.5px;padding-bottom:78px}
  .container{padding-left:16px;padding-right:16px}
  .row{--bs-gutter-x:16px;--bs-gutter-y:16px}
  .section{padding:56px 0}
  .hero-actions .btn-brand,.hero-actions .btn-ghost{width:100%}
  .flow-strip{flex-direction:column;align-items:flex-start;gap:10px}
  .flow-line{display:none}
  .footer-bottom{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *{transition:opacity .14s linear !important;animation:none !important}
  .reward-card:hover,.info-card:hover,.btn-brand:hover,.btn-ghost:hover,.footer-col a:hover{transform:none}
  .reward-card:hover .thumb img,.info-card:hover .info-thumb img{transform:none}
}

/* roulang page: article */
:root{
  --bg-0:#050B12;
  --bg-1:#0A141E;
  --bg-2:#0E1B26;
  --panel:rgba(255,255,255,.055);
  --panel-strong:rgba(255,255,255,.09);
  --line:rgba(255,255,255,.12);
  --brand:#19E3B1;
  --brand-deep:#0FA57F;
  --brand-2:#3B8CFF;
  --accent:#FFB020;
  --danger:#FF5C7A;
  --text-1:#ECF4F7;
  --text-2:#9DB0BC;
  --text-3:#6C8090;
  --r-card:16px;
  --r-lg:20px;
  --r-sm:12px;
  --shadow-card:0 18px 40px -20px rgba(0,0,0,.75);
  --gap-section:96px;
  --bs-primary:#19E3B1;
  --bs-primary-rgb:25,227,177;
  --bs-body-bg:#050B12;
  --bs-body-color:#ECF4F7;
  --bs-border-color:rgba(255,255,255,.12);
  --bs-border-radius:16px;
  --bs-border-radius-lg:16px;
  --bs-border-radius-sm:12px;
  --bs-link-color:#ECF4F7;
  --bs-link-hover-color:#19E3B1;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  padding-top:68px;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(680px 380px at 12% -6%,rgba(25,227,177,.10),transparent 70%),
    radial-gradient(600px 340px at 92% 4%,rgba(59,140,255,.10),transparent 72%);
  z-index:0;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--text-1);text-decoration:none;transition:color 140ms cubic-bezier(.2,.7,.3,1),border-color 140ms cubic-bezier(.2,.7,.3,1);}
a:hover{color:var(--brand);}
p{margin:0 0 18px;}
ul,ol{margin:0;padding-left:1.15rem;}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(25,227,177,.28);color:#fff;}

.container{max-width:1200px;padding-left:20px;padding-right:20px;position:relative;z-index:2;}
.section{padding:var(--gap-section) 0;position:relative;z-index:2;}
.section-alt{background:var(--bg-1);}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--brand);
  background:rgba(25,227,177,.08);
  border:1px solid rgba(25,227,177,.28);
  border-radius:999px;
  padding:4px 12px;
  margin-bottom:16px;
}
.section-title{font-size:clamp(24px,3.4vw,34px);line-height:1.25;font-weight:700;margin:0 0 12px;letter-spacing:-.01em;}
.section-sub{color:var(--text-2);font-size:14px;line-height:1.75;margin:0 0 36px;max-width:660px;}

/* 顶部导航 */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  height:68px;
  z-index:1000;
  background:rgba(255,255,255,.05);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";
  position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(25,227,177,.55),transparent);
  opacity:.7;
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(25,227,177,.22),rgba(59,140,255,.16));
  border:1px solid rgba(25,227,177,.35);
  color:var(--brand);
  font-size:17px;
  box-shadow:0 0 18px -6px rgba(25,227,177,.55);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:.02em;color:var(--text-1);}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.14em;color:var(--text-2);}
.nav-main{display:flex;align-items:center;gap:6px;}
.nav-link{
  padding:8px 14px;
  border-radius:999px;
  font-size:14px;
  color:var(--text-2);
  border:1px solid transparent;
  transition:all 140ms cubic-bezier(.2,.7,.3,1);
}
.nav-link:hover{color:var(--text-1);background:var(--panel);border-color:var(--line);}
.nav-link.active{color:var(--brand);background:rgba(25,227,177,.10);border-color:rgba(25,227,177,.32);}
.nav-actions{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.link-quiet{font-size:14px;color:var(--text-2);border-bottom:1px solid transparent;padding-bottom:2px;}
.link-quiet:hover{color:var(--brand);border-bottom-color:rgba(25,227,177,.6);}
.btn-brand{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 22px;
  border-radius:999px;
  font-size:14px;font-weight:700;
  color:#04241C;
  background:linear-gradient(135deg,#19E3B1,#12C79A);
  border:none;
  box-shadow:0 0 0 1px rgba(25,227,177,.45),0 14px 34px -14px rgba(25,227,177,.6);
  transition:transform 140ms cubic-bezier(.2,.7,.3,1),filter 140ms cubic-bezier(.2,.7,.3,1),box-shadow 140ms cubic-bezier(.2,.7,.3,1);
}
.btn-brand:hover{color:#04241C;transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(25,227,177,.6),0 18px 40px -14px rgba(25,227,177,.75);}
.btn-brand:active{transform:translateY(0);box-shadow:inset 0 2px 8px rgba(0,0,0,.28);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 22px;
  border-radius:999px;
  font-size:14px;font-weight:600;
  color:var(--text-1);
  background:var(--panel);
  border:1px solid var(--line);
  transition:all 140ms cubic-bezier(.2,.7,.3,1);
}
.btn-ghost:hover{color:var(--brand);border-color:rgba(25,227,177,.45);background:var(--panel-strong);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}

/* 移动底部 Tab */
.tabbar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  height:62px;
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(10,20,30,.88);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-top:1px solid var(--line);
  z-index:1100;
}
.tabbar-inner{display:flex;height:62px;}
.tab-item{
  flex:1;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;
  font-size:11px;
  color:var(--text-3);
  position:relative;
}
.tab-item i{font-size:19px;}
.tab-item.active{color:var(--brand);}
.tab-item.active::before{
  content:"";position:absolute;top:0;width:22px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px rgba(25,227,177,.9);
}

/* 文章页头 */
.article-hero{
  position:relative;
  padding:48px 0 36px;
  background-image:linear-gradient(rgba(5,11,18,.82),rgba(5,11,18,.94)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--text-2);margin-bottom:22px;
}
.crumbs a{color:var(--text-2);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:var(--text-3);}
.crumbs .now{color:var(--text-1);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-h1{
  font-size:clamp(30px,5.2vw,52px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.02em;
  margin:0 0 20px;
  max-width:900px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  font-size:13px;color:var(--text-2);
}
.meta-row .badge-soft{font-size:12px;padding:4px 10px;border-radius:999px;color:var(--brand);background:rgba(25,227,177,.10);border:1px solid rgba(25,227,177,.3);}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);}
.divider-line{height:1px;background:var(--line);margin:0;}

/* 正文 */
.article-body{
  max-width:800px;
  margin:0 auto;
  padding:44px 0 0;
  font-size:16px;
  line-height:1.9;
  color:var(--text-1);
}
.article-body p{margin:0 0 18px;color:#DCE7EC;}
.article-body h2{
  position:relative;
  font-size:clamp(22px,3vw,28px);
  line-height:1.35;
  font-weight:700;
  margin:44px 0 18px;
  padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 12px rgba(25,227,177,.75);
}
.article-body h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--brand);margin:30px 0 14px;}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 12px;color:var(--text-1);}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:1.25rem;color:#DCE7EC;}
.article-body li{margin-bottom:8px;}
.article-body a{color:var(--brand-2);border-bottom:1px solid rgba(59,140,255,.4);}
.article-body a:hover{color:var(--brand);border-bottom-color:rgba(25,227,177,.6);}
.article-body blockquote{
  margin:24px 0;
  padding:18px 20px;
  background:var(--panel);
  border:1px solid var(--line);
  border-left:2px solid var(--brand);
  border-radius:var(--r-card);
  color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:22px auto;box-shadow:var(--shadow-card);}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-body table{
  display:block;
  width:100%;
  overflow-x:auto;
  border-collapse:collapse;
  margin:24px 0;
  font-size:14px;
}
.article-body th,.article-body td{
  border:1px solid var(--line);
  padding:10px 14px;
  text-align:left;
  white-space:nowrap;
  color:#DCE7EC;
}
.article-body th{background:var(--panel-strong);font-weight:600;color:var(--text-1);}
.article-body pre{
  overflow-x:auto;
  padding:18px;
  border-radius:var(--r-card);
  background:#08111A;
  border:1px solid var(--line);
  font-family:ui-monospace,"DIN Alternate",Menlo,Consolas,monospace;
  font-size:13.5px;
  line-height:1.7;
  color:#B9E9DC;
  margin:22px 0;
}
.article-body code{
  font-family:ui-monospace,"DIN Alternate",Menlo,Consolas,monospace;
  font-size:.92em;
  background:rgba(25,227,177,.10);
  color:#9FEBD6;
  padding:2px 6px;
  border-radius:6px;
}
.article-body pre code{background:none;padding:0;color:inherit;}
.article-body hr{border:none;height:1px;background:var(--line);margin:34px 0;}

/* 通用玻璃卡 */
.glass-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
  transition:border-color 160ms cubic-bezier(.2,.7,.3,1),transform 160ms cubic-bezier(.2,.7,.3,1);
}
.glass-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.45),transparent);
  opacity:.35;
}
.glass-card:hover{border-color:rgba(25,227,177,.35);}

/* 阅读提示条 */
.read-tips{padding:56px 0 0;max-width:800px;margin:0 auto;}
.tip-list{display:grid;gap:12px;}
.tip-item{
  display:flex;align-items:flex-start;gap:12px;
  padding:14px 16px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
}
.tip-item i{color:var(--brand);font-size:18px;line-height:1.6;}
.tip-item span{font-size:14px;line-height:1.75;color:var(--text-2);}

/* 文末操作 */
.article-end{padding:48px 0 0;max-width:800px;margin:0 auto;}
.end-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.end-note{
  font-size:11px;
  letter-spacing:.08em;
  color:var(--text-3);
  margin-top:22px;
}
.cta-band{
  margin-top:64px;
  padding:32px;
  border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(25,227,177,.12),rgba(59,140,255,.08)),var(--panel);
  border:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:clamp(20px,2.6vw,26px);font-weight:700;margin:0 0 8px;line-height:1.3;}
.cta-band p{margin:0;color:var(--text-2);font-size:14px;line-height:1.75;}
.empty-state{
  text-align:center;
  padding:64px 24px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
}
.empty-state i{font-size:34px;color:var(--text-3);display:block;margin-bottom:16px;}
.empty-state h2{font-size:22px;margin:0 0 10px;}
.empty-state p{color:var(--text-2);font-size:14px;margin:0 0 22px;}

/* 页脚 */
.site-footer{
  background:var(--bg-2);
  border-top:1px solid var(--line);
  padding:64px 0 28px;
  margin-top:var(--gap-section);
  position:relative;
  z-index:2;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand strong{font-size:16px;font-weight:800;letter-spacing:.01em;}
.site-footer p{color:var(--text-2);font-size:14px;line-height:1.75;margin:0 0 10px;}
.footer-col h4{font-size:15px;font-weight:700;margin:0 0 16px;color:var(--text-1);}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block;transition:color 140ms cubic-bezier(.2,.7,.3,1),transform 140ms cubic-bezier(.2,.7,.3,1);}
.footer-col a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-note{
  margin:14px 0 0;
  font-size:12px;
  line-height:1.8;
  color:var(--text-3);
  max-width:900px;
}

@media (max-width:1199.98px){
  :root{--gap-section:72px;}
}
@media (max-width:991.98px){
  :root{--gap-section:56px;}
  body{padding-bottom:78px;}
  .nav-main{display:none;}
  .nav-actions .link-quiet{display:none;}
  .tabbar{display:block;}
  .article-hero{padding:34px 0 28px;}
  .crumbs .now{max-width:200px;}
}
@media (max-width:767.98px){
  .article-body{font-size:15.5px;}
  .cta-band{padding:24px;}
  .end-actions .btn-brand,.end-actions .btn-ghost{width:100%;justify-content:center;}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px;}
  .brand-text strong{font-size:15px;}
  .brand-text em{font-size:10px;letter-spacing:.1em;}
  .nav-actions .btn-brand{padding:9px 16px;font-size:13px;}
  .footer-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  .btn-brand:hover,.btn-ghost:hover,.footer-col a:hover{transform:none;}
}

/* roulang page: category1 */
:root{
  --bg-0:#050B12;
  --bg-1:#0A141E;
  --bg-2:#0E1B26;
  --panel:rgba(255,255,255,.055);
  --panel-strong:rgba(255,255,255,.09);
  --line:rgba(255,255,255,.12);
  --brand:#19E3B1;
  --brand-deep:#0FA57F;
  --brand-2:#3B8CFF;
  --accent:#FFB020;
  --danger:#FF5C7A;
  --text-1:#ECF4F7;
  --text-2:#9DB0BC;
  --text-3:#6C8090;
  --r-card:16px;
  --r-lg:20px;
  --r-sm:12px;
  --r-btn:999px;
  --sh-card:0 18px 40px -20px rgba(0,0,0,.75);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-num:ui-monospace,"DIN Alternate","SFMono-Regular",Menlo,monospace;

  --bs-primary:#19E3B1;
  --bs-primary-rgb:25,227,177;
  --bs-body-bg:#050B12;
  --bs-body-color:#ECF4F7;
  --bs-border-color:rgba(255,255,255,.12);
  --bs-border-radius:16px;
  --bs-border-radius-sm:12px;
  --bs-border-radius-lg:20px;
  --bs-link-color:#ECF4F7;
  --bs-link-hover-color:#19E3B1;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  padding-top:68px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--text-1);text-decoration:none}
a:hover{color:var(--brand)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--text-1)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:rgba(25,227,177,.28);color:#fff}

.container{max-width:1200px;padding-left:20px;padding-right:20px}
@media (min-width:1200px){.container{max-width:1200px}}
@media (max-width:575.98px){.container{padding-left:16px;padding-right:16px}}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  height:68px;display:flex;align-items:center;
  background:rgba(255,255,255,.05);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,.12);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(25,227,177,.22),rgba(59,140,255,.16));
  border:1px solid rgba(25,227,177,.35);
  color:var(--brand);font-size:17px;
  box-shadow:0 0 22px -8px rgba(25,227,177,.7);
}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:.02em;color:var(--text-1)}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.3em;color:var(--text-3)}
.nav-main{display:flex;align-items:center;gap:4px}
.nav-link{
  display:inline-flex;align-items:center;
  padding:8px 14px;border-radius:var(--r-btn);
  font-size:14.5px;color:var(--text-2);
  transition:color .14s cubic-bezier(.2,.7,.3,1),background-color .14s cubic-bezier(.2,.7,.3,1);
}
.nav-link:hover{color:var(--text-1);background:var(--panel)}
.nav-link.active{color:var(--brand);background:rgba(25,227,177,.1)}
.nav-actions{display:flex;align-items:center;gap:16px;flex:0 0 auto}
.link-quiet{
  font-size:14px;color:var(--text-2);
  border-bottom:1px solid transparent;
  transition:color .14s,border-color .14s;
}
.link-quiet:hover{color:var(--brand);border-bottom-color:var(--brand)}

.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 24px;border:none;border-radius:var(--r-btn);
  background:linear-gradient(135deg,#19E3B1,#12C79A);
  color:#04241C;font-size:14.5px;font-weight:700;letter-spacing:.02em;
  box-shadow:0 0 0 1px rgba(25,227,177,.45),0 14px 34px -14px rgba(25,227,177,.6);
  transition:transform .14s cubic-bezier(.2,.7,.3,1),filter .14s,box-shadow .14s;
  cursor:pointer;
}
.btn-brand:hover{transform:translateY(-1px);filter:brightness(1.06);color:#04241C;
  box-shadow:0 0 0 1px rgba(25,227,177,.6),0 18px 42px -14px rgba(25,227,177,.75);}
.btn-brand:active{transform:translateY(0);box-shadow:inset 0 2px 8px rgba(0,0,0,.35)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 24px;border-radius:var(--r-btn);
  background:var(--panel);border:1px solid var(--line);color:var(--text-1);
  font-size:14.5px;font-weight:600;
  transition:transform .14s cubic-bezier(.2,.7,.3,1),border-color .14s,background-color .14s;
  cursor:pointer;
}
.btn-ghost:hover{transform:translateY(-1px);border-color:rgba(25,227,177,.5);background:var(--panel-strong);color:var(--text-1)}
.btn-ghost:active{transform:translateY(0)}
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px;
}

/* ============ 移动端底部 Tab ============ */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  display:none;height:62px;
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(10,20,30,.88);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-top:1px solid rgba(255,255,255,.12);
}
.tabbar-inner{display:flex;height:62px}
.tab-item{
  position:relative;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--text-3);
  transition:color .14s;
}
.tab-item i{font-size:19px;line-height:1}
.tab-item:hover{color:var(--text-2)}
.tab-item.active{color:var(--brand)}
.tab-item.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:22px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px var(--brand);
}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-alt{background:var(--bg-1)}
.section-head{margin-bottom:40px;max-width:720px}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.08em;
  color:var(--brand);margin-bottom:14px;
}
.section-head h2{font-size:clamp(24px,3.4vw,34px);line-height:1.25;font-weight:700}
.section-head p{margin-top:14px;color:var(--text-2);font-size:15px;line-height:1.85}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* ============ 页头 ============ */
.page-hero{
  position:relative;overflow:hidden;
  min-height:200px;display:flex;align-items:center;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-bottom:1px solid var(--line);
  padding:52px 0;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:rgba(5,11,18,.75);pointer-events:none;
}
.page-hero .container{position:relative;z-index:1}
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);margin-bottom:16px}
.crumb a{color:var(--text-2);border-bottom:1px solid transparent;transition:color .14s,border-color .14s}
.crumb a:hover{color:var(--brand);border-bottom-color:var(--brand)}
.crumb .sep{color:var(--text-3)}
.crumb .now{color:var(--brand)}
.page-hero h1{
  font-size:clamp(28px,4.6vw,44px);line-height:1.15;font-weight:800;letter-spacing:-.02em;
  max-width:820px;
}
.page-hero .lede{margin-top:16px;font-size:15px;color:var(--text-2);max-width:640px}

/* ============ Zigzag 长列表 ============ */
.zig-row{
  display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:center;
  padding:40px 0;border-bottom:1px solid var(--line);
}
.zig-row:first-child{padding-top:0}
.zig-row.rev{grid-template-columns:7fr 5fr}
.zig-row.rev .zig-media{order:2}
.zig-row.rev .zig-text{order:1}
.zig-media{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-1);
  aspect-ratio:16/10;
  box-shadow:var(--sh-card);
}
.zig-media::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;z-index:2;
  background:rgba(255,255,255,.08);
}
.zig-media img{width:100%;height:100%;object-fit:cover;transition:transform .32s cubic-bezier(.2,.7,.3,1)}
.zig-row:hover .zig-media img{transform:scale(1.03)}
.zig-num{
  font-family:var(--font-num);
  font-size:clamp(40px,7vw,56px);font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(25,227,177,.55);
  letter-spacing:.02em;margin-bottom:14px;
}
.zig-text h3{font-size:20px;font-weight:600;line-height:1.4;margin-bottom:12px}
.zig-text p{color:var(--text-2);font-size:15px;line-height:1.85;margin-bottom:10px}
.zig-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;color:var(--brand);
  border-bottom:1px solid transparent;transition:border-color .14s,gap .14s;
}
.zig-link:hover{color:var(--brand);border-bottom-color:var(--brand);gap:10px}
.badge-soft{
  display:inline-flex;align-items:center;gap:5px;
  padding:4px 10px;border-radius:var(--r-btn);
  font-size:12px;line-height:1.6;
  background:rgba(25,227,177,.12);border:1px solid rgba(25,227,177,.34);color:var(--brand);
}
.badge-warn{
  display:inline-flex;align-items:center;gap:5px;
  padding:4px 10px;border-radius:var(--r-btn);
  font-size:12px;line-height:1.6;
  background:rgba(255,176,32,.12);border:1px solid rgba(255,176,32,.34);color:var(--accent);
}
.badge-mute{
  display:inline-flex;align-items:center;gap:5px;
  padding:4px 10px;border-radius:var(--r-btn);
  font-size:12px;line-height:1.6;
  background:rgba(255,255,255,.06);border:1px solid var(--line);color:var(--text-2);
}

/* ============ 流程 ============ */
.flow-panel{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:36px;position:relative;overflow:hidden;
  box-shadow:var(--sh-card);
}
.flow-panel::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:rgba(255,255,255,.08);
}
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:8px}
.flow-item{position:relative;padding-top:20px}
.flow-item::before{
  content:"";position:absolute;top:0;left:0;width:100%;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),rgba(59,140,255,.45));
  opacity:.75;
}
.flow-idx{
  font-family:var(--font-num);font-size:22px;font-weight:800;color:var(--brand);
  letter-spacing:.06em;display:block;margin-bottom:8px;
}
.flow-item h3{font-size:17px;font-weight:600;margin-bottom:8px}
.flow-item p{font-size:14px;color:var(--text-2);line-height:1.8}

/* ============ 场景条 ============ */
.scene-list{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.scene-item{
  display:flex;align-items:flex-start;gap:12px;
  padding:20px;border-radius:var(--r-card);
  background:var(--panel);border:1px solid var(--line);
  transition:border-color .14s,background-color .14s;
}
.scene-item:hover{border-color:rgba(25,227,177,.35);background:var(--panel-strong)}
.scene-item i{font-size:20px;color:var(--brand);line-height:1.4}
.scene-item strong{display:block;font-size:15px;font-weight:600;margin-bottom:4px}
.scene-item span{font-size:13.5px;color:var(--text-2);line-height:1.75}

/* ============ 更新提示 ============ */
.note-list{display:grid;gap:16px}
.note-item{
  display:flex;gap:16px;align-items:flex-start;
  padding:22px 24px;border-radius:var(--r-card);
  background:var(--panel);border:1px solid var(--line);
  transition:border-color .14s,transform .14s cubic-bezier(.2,.7,.3,1);
}
.note-item:hover{border-color:rgba(25,227,177,.32);transform:translateX(3px)}
.note-dot{
  flex:0 0 8px;width:8px;height:8px;margin-top:11px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 10px var(--brand);
}
.note-item.warn .note-dot{background:var(--accent);box-shadow:0 0 10px var(--accent)}
.note-body h3{font-size:16px;font-weight:600;margin-bottom:6px}
.note-body p{font-size:14px;color:var(--text-2);line-height:1.8}
.note-time{font-family:var(--font-num);font-size:13px;color:var(--text-3);margin-top:8px;display:block}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;margin:0 auto}
.accordion-item{
  background:var(--panel)!important;
  border:1px solid var(--line)!important;
  border-radius:14px!important;
  margin-bottom:12px;overflow:hidden;
}
.accordion-button{
  background:transparent!important;
  color:var(--text-1)!important;
  font-size:16px;font-weight:600;
  padding:18px 22px;
  box-shadow:none!important;
  border-radius:14px!important;
}
.accordion-button:not(.collapsed){
  background:rgba(25,227,177,.06)!important;
  color:var(--brand)!important;
}
.accordion-button:focus{box-shadow:none!important;border-color:transparent!important}
.accordion-button::after{
  content:"+";
  background-image:none!important;
  width:24px;height:24px;flex:0 0 24px;
  display:grid;place-items:center;
  font-size:20px;font-weight:400;color:var(--brand);
  line-height:1;transform:none;
  transition:transform .24s cubic-bezier(.2,.7,.3,1);
}
.accordion-button.collapsed::after{transform:none}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.accordion-body{
  padding:0 22px 20px;
  font-size:15px;line-height:1.8;color:var(--text-2);
}
.accordion-collapse{transition:height .26s cubic-bezier(.2,.7,.3,1)}

/* ============ CTA ============ */
.cta-panel{
  display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;
  padding:44px;border-radius:var(--r-lg);
  background:var(--panel);border:1px solid var(--line);
  position:relative;overflow:hidden;
  box-shadow:var(--sh-card);
}
.cta-panel::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:rgba(255,255,255,.08);
}
.cta-panel h2{font-size:clamp(22px,3vw,30px);font-weight:700;line-height:1.3}
.cta-panel p{margin-top:14px;color:var(--text-2);font-size:15px;line-height:1.85}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px}
.cta-form label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.input-row{display:flex;gap:10px}
.form-control{
  background:rgba(255,255,255,.05)!important;
  border:1px solid var(--line)!important;
  border-radius:var(--r-sm)!important;
  color:var(--text-1)!important;
  padding:12px 16px;font-size:15px;
  transition:border-color .14s,box-shadow .14s,background-color .14s;
}
.form-control:focus{
  background:rgba(255,255,255,.07)!important;
  border-color:rgba(25,227,177,.6)!important;
  box-shadow:0 0 0 3px rgba(25,227,177,.18)!important;
  color:var(--text-1)!important;
}
.form-control::placeholder{color:var(--text-3)}
.form-hint{margin-top:10px;font-size:13px;color:var(--text-3)}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-2);
  border-top:1px solid var(--line);
  padding:64px 0 28px;
  margin-top:0;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand strong{font-size:16px;font-weight:800;color:var(--text-1)}
.site-footer p{font-size:14px;color:var(--text-2);line-height:1.85}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:14px;color:var(--text-1)}
.footer-col ul{display:grid;gap:10px}
.footer-col li a{
  font-size:14px;color:var(--text-2);display:inline-block;
  transition:color .14s,transform .14s;
}
.footer-col li a:hover{color:var(--brand);transform:translateX(2px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  margin-top:44px;padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.footer-note{
  margin-top:14px;font-size:12.5px;color:var(--text-3);line-height:1.8;
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .section{padding:72px 0}
}
@media (max-width:991.98px){
  .nav-main,.nav-actions{display:none}
  .tabbar{display:block}
  body{padding-bottom:78px}
  .section{padding:64px 0}
  .zig-row,.zig-row.rev{grid-template-columns:1fr;gap:24px}
  .zig-row .zig-media,.zig-row.rev .zig-media{order:1}
  .zig-row .zig-text,.zig-row.rev .zig-text{order:2}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .scene-list{grid-template-columns:repeat(2,1fr)}
  .cta-panel{grid-template-columns:1fr;padding:32px}
}
@media (max-width:767.98px){
  .page-hero{padding:40px 0;min-height:180px}
  .section{padding:56px 0}
}
@media (max-width:575.98px){
  body{font-size:15.5px}
  .flow-grid,.scene-list{grid-template-columns:1fr}
  .flow-panel{padding:24px}
  .cta-panel{padding:24px}
  .input-row{flex-direction:column}
  .input-row .btn-brand{width:100%}
  .brand-text em{letter-spacing:.22em;font-size:10px}
  .footer-bottom{flex-direction:column}
}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    transition-duration:.001ms!important;
    animation-duration:.001ms!important;
    scroll-behavior:auto!important;
  }
  .btn-brand:hover,.btn-ghost:hover,.note-item:hover{transform:none!important}
  .zig-row:hover .zig-media img{transform:none!important}
}

/* roulang page: category2 */
:root{
  --bg-0:#050B12; --bg-1:#0A141E; --bg-2:#0E1B26;
  --panel:rgba(255,255,255,.055); --panel-strong:rgba(255,255,255,.09); --line:rgba(255,255,255,.12);
  --brand:#19E3B1; --brand-deep:#0FA57F; --brand-2:#3B8CFF; --accent:#FFB020; --danger:#FF5C7A;
  --text-1:#ECF4F7; --text-2:#9DB0BC; --text-3:#6C8090;
  --r-card:16px; --r-img:20px; --r-btn:999px; --r-input:12px;
  --shadow-card:0 18px 40px -20px rgba(0,0,0,.75);
  --ease:cubic-bezier(.2,.7,.3,1);
}
:root{
  --bs-body-bg:#050B12; --bs-body-color:#ECF4F7;
  --bs-border-color:rgba(255,255,255,.12); --bs-border-radius:14px;
  --bs-primary:#19E3B1; --bs-primary-rgb:25,227,177;
  --bs-link-color:#19E3B1; --bs-link-hover-color:#3B8CFF;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --bs-body-font-size:16px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;padding-top:68px;
  background:var(--bg-0);color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.9;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--text-1);text-decoration:none;transition:color .14s var(--ease),background-color .14s var(--ease),border-color .14s var(--ease)}
a:hover{color:var(--brand)}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700}
p{margin:0 0 14px}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:10px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (max-width:576px){.container{padding-left:16px;padding-right:16px}}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;height:68px;z-index:1040;
  background:rgba(255,255,255,.05);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{height:68px;display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,#19E3B1,#12C79A);color:#04241C;font-size:18px;
  box-shadow:0 0 0 1px rgba(25,227,177,.45),0 14px 34px -14px rgba(25,227,177,.6);
}
.brand-text strong{display:block;font-size:16px;line-height:1.2;letter-spacing:.01em}
.brand-text em{display:block;font-style:normal;font-size:11px;line-height:1.3;color:var(--text-2);letter-spacing:.12em}
.nav-main{display:flex;align-items:center;gap:4px;margin:0 auto}
.nav-link{padding:8px 14px;border-radius:999px;font-size:14.5px;color:var(--text-2);white-space:nowrap}
.nav-link:hover{color:var(--text-1);background:var(--panel)}
.nav-link.active{color:var(--brand);background:rgba(25,227,177,.1);box-shadow:inset 0 0 0 1px rgba(25,227,177,.28)}
.nav-actions{display:flex;align-items:center;gap:16px;flex-shrink:0}
.link-quiet{font-size:14px;color:var(--text-2);border-bottom:1px solid transparent}
.link-quiet:hover{color:var(--brand);border-bottom-color:rgba(25,227,177,.55)}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--r-btn);border:0;
  font-size:14.5px;font-weight:600;color:#04241C;
  background:linear-gradient(135deg,#19E3B1,#12C79A);
  box-shadow:0 0 0 1px rgba(25,227,177,.45),0 14px 34px -14px rgba(25,227,177,.6);
  transition:transform .14s var(--ease),filter .14s var(--ease),box-shadow .14s var(--ease);
  white-space:nowrap;
}
.btn-brand:hover{color:#04241C;transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(25,227,177,.55),0 20px 44px -16px rgba(25,227,177,.75)}
.btn-brand:active{transform:translateY(0);box-shadow:inset 0 2px 8px rgba(4,36,28,.35)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--r-btn);
  font-size:14.5px;font-weight:600;color:var(--text-1);
  background:var(--panel);border:1px solid var(--line);
  transition:transform .14s var(--ease),border-color .14s var(--ease),color .14s var(--ease);
}
.btn-ghost:hover{color:var(--brand);border-color:rgba(25,227,177,.42);transform:translateY(-1px)}

/* ============ 移动端底部 Tab ============ */
.mobile-tab{display:none}
@media (max-width:991.98px){
  body{padding-bottom:78px}
  .nav-main{display:none}
  .nav-actions .link-quiet{display:none}
  .nav-wrap{justify-content:space-between}
  .mobile-tab{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:1050;
    height:62px;padding-bottom:env(safe-area-inset-bottom);
    background:rgba(10,20,30,.88);
    -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
    border-top:1px solid var(--line);
  }
  .tab-item{
    flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    font-size:11px;color:var(--text-3);position:relative;
  }
  .tab-item i{font-size:19px;line-height:1}
  .tab-item.active{color:var(--brand)}
  .tab-item.active::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:26px;height:2px;border-radius:2px;background:var(--brand);
    box-shadow:0 0 10px rgba(25,227,177,.9);
  }
}

/* ============ 页头 ============ */
.page-head{
  position:relative;min-height:210px;display:flex;align-items:flex-end;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;overflow:hidden;
}
.page-head::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,11,18,.72) 0%,rgba(5,11,18,.9) 100%);
}
.page-head .container{position:relative;z-index:2;padding-top:52px;padding-bottom:38px}
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);margin-bottom:16px;flex-wrap:wrap}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:var(--text-3)}
.crumb .now{color:var(--text-1)}
.page-head h1{
  font-size:clamp(28px,4.4vw,44px);line-height:1.18;font-weight:800;letter-spacing:-.02em;
  margin-bottom:12px;max-width:20em;
}
.page-head .lead{font-size:15px;color:var(--text-2);max-width:34em;margin:0}

/* ============ 板块 ============ */
.sec{padding:96px 0}
.sec-alt{background:var(--bg-1)}
.sec-line{border-top:1px solid var(--line)}
.sec-head{max-width:720px;margin-bottom:40px}
.sec-label{
  display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--brand);
  margin-bottom:12px;
}
.sec-head h2{font-size:clamp(24px,3.4vw,34px);line-height:1.25;font-weight:700;margin-bottom:12px}
.sec-head p{color:var(--text-2);font-size:15px;line-height:1.8;margin:0}

/* ============ 流程状态条 ============ */
.flow-bar{
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-card);
}
.flow-node{display:flex;align-items:center;gap:12px;position:relative}
.flow-node .dot{width:8px;height:8px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(25,227,177,.85);flex-shrink:0}
.flow-node .txt{font-size:14.5px;color:var(--text-1)}
.flow-node .line{flex:1;height:1px;background:var(--line)}
.flow-node:last-child .line{display:none}

/* ============ 索引式布局 ============ */
.index-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:40px;align-items:start}
.anchor-list{
  position:sticky;top:92px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px;box-shadow:var(--shadow-card);
}
.anchor-list h3{font-size:12px;letter-spacing:.08em;color:var(--text-3);font-weight:600;margin-bottom:14px}
.anchor-list a{
  display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;
  font-size:14.5px;color:var(--text-2);
}
.anchor-list a::before{
  content:"";width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.22);
  flex-shrink:0;transition:background-color .2s var(--ease),box-shadow .2s var(--ease);
}
.anchor-list a:hover{color:var(--text-1);background:var(--panel-strong)}
.anchor-list a.is-active{color:var(--brand);background:rgba(25,227,177,.1)}
.anchor-list a.is-active::before{background:var(--brand);box-shadow:0 0 10px rgba(25,227,177,.85)}

.num-card{
  position:relative;display:grid;grid-template-columns:104px minmax(0,1fr);gap:24px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--shadow-card);overflow:hidden;
  scroll-margin-top:96px;
}
.num-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.16),rgba(255,255,255,0));
}
.num-card + .num-card{margin-top:24px}
.num-card:hover{border-color:rgba(25,227,177,.35)}
.num-card .num{
  font-family:ui-monospace,"DIN Alternate",monospace;
  font-size:clamp(40px,5vw,56px);line-height:1;font-weight:800;letter-spacing:-.02em;
  color:transparent;-webkit-text-stroke:1px rgba(25,227,177,.55);
}
.num-body h3{font-size:20px;line-height:1.4;margin-bottom:10px}
.num-body p{color:var(--text-2);font-size:15px;line-height:1.8;margin-bottom:14px}
.meta-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.thumb{
  width:100%;max-width:420px;aspect-ratio:16/10;border-radius:14px;overflow:hidden;
  background:var(--bg-1);border:1px solid var(--line);
}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.num-card:hover .thumb img{transform:scale(1.03)}
@media (max-width:767.98px){
  .num-card{grid-template-columns:1fr;gap:14px;padding:20px}
  .num-card .num{font-size:40px}
}

/* ============ 标签 / 徽章 ============ */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;padding:4px 10px;border-radius:999px;
  border:1px solid var(--line);background:var(--panel);color:var(--text-2);
}
.tag-brand{color:var(--brand);border-color:rgba(25,227,177,.4);background:rgba(25,227,177,.08)}
.tag-accent{color:var(--accent);border-color:rgba(255,176,32,.35);background:rgba(255,176,32,.08)}

/* ============ 步骤表 ============ */
.step-table{display:grid;gap:12px}
.step-row{
  display:grid;grid-template-columns:200px minmax(0,1fr) 120px;gap:18px;align-items:center;
  background:var(--panel);border:1px solid var(--line);border-radius:14px;
  padding:16px 20px;transition:border-color .16s var(--ease),background-color .16s var(--ease);
}
.step-row:hover{border-color:rgba(25,227,177,.35);background:var(--panel-strong)}
.step-row .name{font-weight:600;font-size:15.5px;display:flex;align-items:center;gap:10px}
.step-row .name i{color:var(--brand);font-size:15px}
.step-row .cond{font-size:14.5px;color:var(--text-2)}
.step-row .time{font-family:ui-monospace,"DIN Alternate",monospace;font-size:14px;color:var(--accent);text-align:right}
@media (max-width:767.98px){
  .step-row{grid-template-columns:1fr;gap:8px;text-align:left}
  .step-row .time{text-align:left}
}

/* ============ 兼容清单卡 ============ */
.compat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:24px}
.compat-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-card);
  transition:border-color .16s var(--ease),transform .16s var(--ease);
}
.compat-card:hover{border-color:rgba(25,227,177,.35);transform:translateY(-2px)}
.compat-card .ico{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:rgba(25,227,177,.1);border:1px solid rgba(25,227,177,.28);
  color:var(--brand);font-size:18px;margin-bottom:16px;
}
.compat-card h3{font-size:17px;margin-bottom:8px}
.compat-card p{font-size:14.5px;color:var(--text-2);line-height:1.8;margin:0}

/* ============ 常见卡点 ============ */
.trouble-list{display:grid;gap:16px}
.trouble{
  display:grid;grid-template-columns:52px minmax(0,1fr);gap:18px;align-items:start;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;
}
.trouble .idx{
  font-family:ui-monospace,"DIN Alternate",monospace;font-size:15px;font-weight:700;
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  color:var(--brand);border:1px solid rgba(25,227,177,.35);background:rgba(25,227,177,.07);
}
.trouble h3{font-size:17px;margin-bottom:10px}
.trouble .order{color:var(--text-2);font-size:14.5px;line-height:1.9}
.trouble .order b{color:var(--text-1);font-weight:600}
.trouble .order i{color:var(--brand-2);font-style:normal;padding:0 4px}
@media (max-width:767.98px){
  .trouble{grid-template-columns:1fr;gap:12px;padding:20px}
}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px}
.accordion{
  --bs-accordion-bg:transparent;
  --bs-accordion-border-color:var(--line);
  --bs-accordion-btn-color:var(--text-1);
  --bs-accordion-btn-bg:transparent;
  --bs-accordion-active-color:var(--brand);
  --bs-accordion-active-bg:rgba(25,227,177,.06);
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-accordion-border-radius:14px;
  --bs-accordion-inner-border-radius:14px;
  --bs-accordion-color:var(--text-2);
}
.accordion-item{
  background:var(--panel);border:1px solid var(--line);border-radius:14px!important;
  margin-bottom:12px;overflow:hidden;
}
.accordion-button{
  font-weight:600;font-size:16px;background:transparent;box-shadow:none!important;
  padding:18px 20px;color:var(--text-1);
  transition:color .16s var(--ease),background-color .16s var(--ease);
}
.accordion-button:hover{color:var(--brand)}
.accordion-button:not(.collapsed){color:var(--brand);background:rgba(25,227,177,.06)}
.accordion-button::after{
  background-image:none!important;
  content:"+";display:flex;align-items:center;justify-content:center;
  width:24px;height:24px;font-size:20px;line-height:1;font-weight:400;
  color:var(--brand);flex-shrink:0;margin-left:16px;
  transition:transform .26s var(--ease);
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.accordion-body{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* ============ CTA ============ */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:linear-gradient(135deg,rgba(25,227,177,.12),rgba(59,140,255,.08)),var(--panel);
  border:1px solid var(--line);border-radius:var(--r-card);
  padding:36px 40px;box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);line-height:1.3;margin-bottom:8px}
.cta-band p{color:var(--text-2);font-size:15px;margin:0}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
@media (max-width:767.98px){
  .cta-band{padding:26px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn-brand,.cta-actions .btn-ghost{flex:1;min-width:150px}
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-2);border-top:1px solid var(--line);
  padding:64px 0 32px;margin-top:0;
}
.row{--bs-gutter-x:24px;--bs-gutter-y:24px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand strong{font-size:16px;letter-spacing:.01em}
.footer-col h4{font-size:14px;letter-spacing:.04em;color:var(--text-1);margin-bottom:16px;font-weight:600}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14.5px;color:var(--text-2);display:inline-block;transition:transform .14s var(--ease),color .14s var(--ease)}
.footer-col ul li a:hover{color:var(--brand);transform:translateX(2px)}
.footer-col p{font-size:14px;color:var(--text-2);line-height:1.8;margin-bottom:8px}
.site-footer .col-12 p{font-size:14.5px;color:var(--text-2);line-height:1.85;margin:0}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.footer-note{
  margin-top:16px;font-size:12.5px;letter-spacing:.01em;color:var(--text-3);line-height:1.8;
}
@media (max-width:991.98px){
  .sec{padding:72px 0}
}
@media (max-width:767.98px){
  .sec{padding:56px 0}
  .sec-head{margin-bottom:28px}
  .flow-bar{grid-template-columns:1fr;gap:12px;padding:20px}
  .flow-node .line{display:none}
  .index-layout{grid-template-columns:1fr;gap:26px}
  .anchor-list{position:static;display:flex;flex-wrap:wrap;gap:8px;padding:14px}
  .anchor-list h3{width:100%;margin-bottom:6px}
  .anchor-list a{padding:7px 12px;background:var(--panel-strong);border-radius:999px}
  .anchor-list a::before{width:6px;height:6px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms!important;animation-duration:.01ms!important}
  html{scroll-behavior:auto}
  .btn-brand:hover,.btn-ghost:hover,.compat-card:hover,.num-card:hover .thumb img{transform:none}
}

/* roulang page: category3 */
:root{
  --bg-0:#050B12;
  --bg-1:#0A141E;
  --bg-2:#0E1B26;
  --panel:rgba(255,255,255,.055);
  --panel-strong:rgba(255,255,255,.09);
  --line:rgba(255,255,255,.12);
  --brand:#19E3B1;
  --brand-deep:#0FA57F;
  --brand-2:#3B8CFF;
  --accent:#FFB020;
  --danger:#FF5C7A;
  --text-1:#ECF4F7;
  --text-2:#9DB0BC;
  --text-3:#6C8090;
  --radius-card:16px;
  --radius-img:20px;
  --shadow-card:0 18px 40px -20px rgba(0,0,0,.75);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;

  --bs-primary:#19E3B1;
  --bs-primary-rgb:25,227,177;
  --bs-body-bg:#050B12;
  --bs-body-color:#ECF4F7;
  --bs-border-color:rgba(255,255,255,.12);
  --bs-border-radius:16px;
  --bs-border-radius-sm:12px;
  --bs-border-radius-lg:20px;
  --bs-link-color:#3B8CFF;
  --bs-link-hover-color:#19E3B1;
  --bs-secondary:#9DB0BC;
  --bs-dark:#0A141E;
  --bs-font-sans-serif:var(--font);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  padding-bottom:0;
  overflow-x:hidden;
}
@media (max-width:991.98px){body{padding-bottom:78px}}
img{max-width:100%;height:auto;display:block}
a{color:var(--text-1);text-decoration:none;border-bottom:none;transition:color .14s cubic-bezier(.2,.7,.3,1),border-color .14s}
a:hover{color:var(--brand)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px}
h1,h2,h3,h4{font-family:var(--font);color:var(--text-1);letter-spacing:-.01em}
h1{font-size:clamp(30px,5.2vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.02em;margin:0}
h2{font-size:clamp(24px,3.4vw,34px);line-height:1.25;font-weight:700;margin:0}
h3{font-size:20px;line-height:1.4;font-weight:600;margin:0}
p{margin:0 0 18px}
.container{max-width:1200px;padding-left:20px;padding-right:20px;margin:0 auto}
@media (max-width:575.98px){.container{padding-left:16px;padding-right:16px}}
.row{--bs-gutter-x:24px;--bs-gutter-y:24px}
@media (max-width:575.98px){.row{--bs-gutter-x:16px;--bs-gutter-y:16px}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:linear-gradient(rgba(255,255,255,.05),rgba(255,255,255,.05)),rgba(5,11,18,.72);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.brand{display:flex;align-items:center;gap:10px;border-bottom:none;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(25,227,177,.22),rgba(59,140,255,.16));
  border:1px solid rgba(25,227,177,.38);color:var(--brand);font-size:18px;
  box-shadow:0 0 22px -10px rgba(25,227,177,.75);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:.01em;color:var(--text-1)}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.14em;color:var(--text-2)}
.nav-main{display:flex;align-items:center;gap:4px}
.nav-main .nav-link{
  display:inline-block;padding:8px 14px;border-radius:999px;font-size:15px;color:var(--text-2);
  border-bottom:none;white-space:nowrap;
}
.nav-main .nav-link:hover{color:var(--text-1);background:var(--panel)}
.nav-main .nav-link.active{color:var(--brand);background:rgba(25,227,177,.1);box-shadow:inset 0 0 0 1px rgba(25,227,177,.28)}
.nav-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}
.link-quiet{font-size:14px;color:var(--text-2);border-bottom:1px solid transparent}
.link-quiet:hover{color:var(--brand);border-bottom-color:var(--brand)}
.btn-brand,.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  border-radius:999px;font-size:15px;font-weight:600;padding:11px 22px;border:1px solid transparent;
  transition:transform .14s cubic-bezier(.2,.7,.3,1),filter .14s,box-shadow .14s,background .14s;
  cursor:pointer;white-space:nowrap;
}
.btn-brand{
  background:linear-gradient(135deg,#19E3B1,#12C79A);color:#04241C;border-bottom:none;
  box-shadow:0 0 0 1px rgba(25,227,177,.45),0 14px 34px -14px rgba(25,227,177,.6);
}
.btn-brand:hover{color:#04241C;transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(25,227,177,.6),0 18px 40px -14px rgba(25,227,177,.75)}
.btn-brand:active{transform:translateY(0);box-shadow:inset 0 2px 8px rgba(0,0,0,.35)}
.btn-ghost{
  background:var(--panel);color:var(--text-1);border:1px solid var(--line);border-bottom:1px solid var(--line);
}
.btn-ghost:hover{color:var(--text-1);transform:translateY(-1px);border-color:rgba(25,227,177,.35);background:var(--panel-strong)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm-brand{padding:9px 18px;font-size:14px}
.btn-lg-brand{padding:14px 28px;font-size:16px}

/* ---------- Page hero ---------- */
.page-hero{
  position:relative;isolation:isolate;
  min-height:220px;display:flex;align-items:flex-end;
  padding:44px 0 34px;
  border-bottom:1px solid var(--line);
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center 30%;
}
.page-hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(5,11,18,.72),rgba(5,11,18,.88));
}
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);margin-bottom:14px;flex-wrap:wrap}
.crumb a{color:var(--text-2);border-bottom:1px solid transparent}
.crumb a:hover{color:var(--brand);border-bottom-color:var(--brand)}
.crumb .sep{color:var(--text-3)}
.crumb .now{color:var(--text-1)}
.hero-sub{margin:14px 0 0;font-size:16px;color:var(--text-2);max-width:620px}

/* ---------- Sections ---------- */
.section{padding:96px 0}
.section-alt{background:var(--bg-1)}
@media (max-width:991.98px){.section{padding:72px 0}}
@media (max-width:575.98px){.section{padding:56px 0}}
.section-head{max-width:720px;margin-bottom:40px}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--brand);
  padding:6px 12px;border-radius:999px;background:rgba(25,227,177,.1);
  border:1px solid rgba(25,227,177,.28);margin-bottom:16px;
}
.section-head p{color:var(--text-2);font-size:15px;margin:14px 0 0}

/* ---------- Filter chips ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.filter-chip{
  appearance:none;background:var(--panel);border:1px solid var(--line);color:var(--text-2);
  font-size:14px;padding:9px 18px;border-radius:999px;cursor:pointer;
  transition:color .14s,border-color .14s,background .14s,transform .14s;
  font-family:var(--font);
}
.filter-chip:hover{color:var(--text-1);border-color:rgba(25,227,177,.3);transform:translateY(-1px)}
.filter-chip.is-active{
  color:var(--brand);border-color:rgba(25,227,177,.55);
  background:linear-gradient(180deg,rgba(25,227,177,.16),rgba(25,227,177,.04));
  box-shadow:0 0 0 1px rgba(25,227,177,.18),0 10px 26px -18px rgba(25,227,177,.9);
}

/* ---------- Glass card grid ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:start}
@media (max-width:1199.98px){.card-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}}
@media (max-width:991.98px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:575.98px){.card-grid{grid-template-columns:1fr;gap:16px}}
.glass-card{
  position:relative;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:16px;box-shadow:var(--shadow-card);overflow:hidden;
  transition:border-color .18s,transform .18s,box-shadow .18s;
}
.glass-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);
}
.glass-card:hover{border-color:rgba(25,227,177,.35);transform:translateY(-3px);box-shadow:0 24px 48px -24px rgba(0,0,0,.85)}
.card-media{
  position:relative;border-radius:12px;overflow:hidden;aspect-ratio:16/10;background:var(--bg-1);
  border:1px solid rgba(255,255,255,.07);
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s cubic-bezier(.2,.7,.3,1)}
.glass-card:hover .card-media img{transform:scale(1.03)}
.badge-soft{
  position:absolute;top:10px;right:10px;z-index:2;
  font-size:12px;padding:4px 10px;border-radius:999px;
  background:rgba(6,14,20,.78);border:1px solid var(--line);color:var(--text-2);backdrop-filter:blur(6px);
}
.badge-state-amber{color:var(--accent);border-color:rgba(255,176,32,.42);background:rgba(255,176,32,.1)}
.badge-state-brand{color:var(--brand);border-color:rgba(25,227,177,.42);background:rgba(25,227,177,.1)}
.card-body-inner{padding:16px 4px 4px}
.card-body-inner h3{font-size:17px;font-weight:700;margin-bottom:8px}
.card-body-inner p{font-size:14px;line-height:1.75;color:var(--text-2);margin:0}
.card-tag{display:inline-block;font-size:12px;color:var(--text-3);letter-spacing:.06em;margin-bottom:8px}
.tag-pill{
  display:inline-block;font-size:12px;padding:4px 10px;border-radius:999px;
  background:rgba(59,140,255,.1);border:1px solid rgba(59,140,255,.3);color:#8FB8FF;
}
.is-hidden{display:none !important}

/* ---------- Panel / progress ---------- */
.panel{
  background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:32px;
  box-shadow:var(--shadow-card);position:relative;overflow:hidden;
}
.panel::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.26),transparent);
}
@media (max-width:575.98px){.panel{padding:22px}}
.progress-track{
  height:10px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden;margin:20px 0 12px;
  border:1px solid rgba(255,255,255,.07);
}
.progress-fill{
  height:100%;width:62%;border-radius:999px;
  background:linear-gradient(90deg,#19E3B1,#3B8CFF);
  box-shadow:0 0 18px rgba(25,227,177,.55);
}
.node-row{display:flex;justify-content:space-between;font-size:13px;color:var(--text-3)}
.node-row span{display:inline-flex;align-items:center;gap:6px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(25,227,177,.9);display:inline-block}
.dot-muted{background:var(--text-3);box-shadow:none}
.mono{font-family:ui-monospace,"DIN Alternate",monospace;letter-spacing:.04em;color:var(--text-1)}

/* ---------- Steps ---------- */
.step-list{position:relative;padding-left:34px}
.step-list::before{
  content:"";position:absolute;left:12px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,rgba(25,227,177,.9),rgba(59,140,255,.15));
}
.step-item{position:relative;padding:0 0 34px}
.step-item:last-child{padding-bottom:0}
.step-item::before{
  content:"";position:absolute;left:-28px;top:12px;width:10px;height:10px;border-radius:50%;
  background:var(--bg-0);border:2px solid var(--brand);box-shadow:0 0 12px rgba(25,227,177,.7);
}
.step-num{
  display:block;font-family:ui-monospace,"DIN Alternate",monospace;
  font-size:clamp(30px,4vw,42px);font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1.4px rgba(25,227,177,.75);margin-bottom:8px;
}
.step-item h3{font-size:18px;margin-bottom:6px}
.step-item p{font-size:14px;color:var(--text-2);margin:0}
@media (max-width:575.98px){.step-list{padding-left:24px}.step-item::before{left:-22px}}

/* ---------- Note list ---------- */
.note-list{list-style:none;padding:0;margin:0}
.note-list li{
  display:flex;gap:12px;padding:16px 18px;border:1px solid var(--line);border-radius:14px;
  background:var(--panel);margin-bottom:12px;font-size:15px;color:var(--text-2);line-height:1.8;
}
.note-list li i{color:var(--brand);font-size:18px;line-height:1.6;flex-shrink:0}
.note-list li strong{color:var(--text-1);font-weight:600}

/* ---------- FAQ ---------- */
.faq-acc .accordion-item{
  background:var(--panel);border:1px solid var(--line);border-radius:14px !important;
  margin-bottom:12px;overflow:hidden;
}
.faq-acc .accordion-button{
  background:transparent;color:var(--text-1);font-size:16px;font-weight:600;
  padding:18px 20px;box-shadow:none;border-radius:14px !important;
}
.faq-acc .accordion-button::after{
  background-image:none;content:"\F4FE";font-family:"bootstrap-icons";color:var(--brand);
  font-size:18px;width:auto;height:auto;line-height:1;transition:transform .26s cubic-bezier(.2,.7,.3,1);
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand);background:rgba(25,227,177,.06)}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.faq-acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand-2);outline-offset:-3px}
.faq-acc .accordion-body{font-size:15px;line-height:1.8;color:var(--text-2);padding:0 20px 20px;transition:height .26s}
.faq-acc .accordion-collapse{transition:height .26s cubic-bezier(.2,.7,.3,1)}

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(90deg,rgba(25,227,177,.1),rgba(59,140,255,.06));
  border:1px solid var(--line);border-radius:20px;padding:34px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band h2{font-size:clamp(20px,2.6vw,26px);margin-bottom:8px}
.cta-band p{color:var(--text-2);font-size:15px;margin:0}
@media (max-width:575.98px){.cta-band{padding:22px}}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-2);border-top:1px solid var(--line);padding:64px 0 32px;margin-top:0}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand strong{font-size:16px;font-weight:800}
.site-footer p{font-size:14px;color:var(--text-2);line-height:1.8}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:14px;color:var(--text-1)}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;color:var(--text-2);display:inline-block;transition:color .14s,transform .14s}
.footer-col ul li a:hover{color:var(--brand);transform:translateX(2px)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);margin-top:34px;padding-top:20px;
  font-size:13px;color:var(--text-3);
}
.footer-note{font-size:12.5px;color:var(--text-3);margin:14px 0 0;line-height:1.8}
@media (max-width:575.98px){.site-footer{padding:48px 0 26px}}

/* ---------- Mobile tab ---------- */
.mobile-tab{display:none}
@media (max-width:991.98px){
  .nav-main,.nav-actions{display:none}
  .mobile-tab{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:1040;height:62px;
    padding-bottom:env(safe-area-inset-bottom);
    background:linear-gradient(rgba(255,255,255,.05),rgba(255,255,255,.05)),rgba(10,20,30,.86);
    -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
    border-top:1px solid var(--line);
  }
  .mobile-tab .tab-item{
    flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    font-size:11px;color:var(--text-3);position:relative;border-bottom:none;padding-top:6px;
  }
  .mobile-tab .tab-item i{font-size:20px;line-height:1}
  .mobile-tab .tab-item.is-active{color:var(--brand)}
  .mobile-tab .tab-item.is-active::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:26px;height:2px;border-radius:2px;background:var(--brand);
    box-shadow:0 0 10px rgba(25,227,177,.95);
  }
}

@media (prefers-reduced-motion:reduce){
  *{transition:opacity .2s !important;animation:none !important}
  .glass-card:hover{transform:none}
  .glass-card:hover .card-media img{transform:none}
  .btn-brand:hover,.btn-ghost:hover,.filter-chip:hover{transform:none}
}