/* roulang page: index */
:root{
  --bg-0:#05080F;
  --bg-1:#0A101C;
  --bg-2:#0F1728;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.085);
  --line:rgba(120,190,255,.16);
  --line-soft:rgba(255,255,255,.08);
  --brand:#22D3C5;
  --brand-hi:#7CE8FF;
  --brand-soft:rgba(34,211,197,.14);
  --accent:#D9A244;
  --accent-soft:rgba(217,162,68,.14);
  --text-1:#E9F1FA;
  --text-2:rgba(233,241,250,.70);
  --text-3:rgba(233,241,250,.45);
  --danger-bg:rgba(255,122,107,.16);
  --danger-t:#FF9A8C;
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-2:0 16px 40px rgba(0,0,0,.45);
  --sh-glow:0 10px 32px -10px rgba(34,211,197,.6);
  --t:200ms cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.num{font-family:Inter,"Noto Sans SC",system-ui,sans-serif;font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
::selection{background:rgba(34,211,197,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-0)}
::-webkit-scrollbar-thumb{background:rgba(120,190,255,.18);border-radius:999px;border:2px solid var(--bg-0)}
::-webkit-scrollbar-thumb:hover{background:rgba(34,211,197,.4)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1024px){.container{padding:0 24px}}
@media(min-width:1440px){.container{max-width:1280px}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(5,8,15,.74);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-soft);
  transition:background var(--t),box-shadow var(--t);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,197,.45),transparent);
  opacity:.7;
}
.site-header.is-scrolled{background:rgba(5,8,15,.94);box-shadow:0 12px 30px -18px rgba(0,0,0,.9)}
.nav-inner{display:flex;align-items:center;gap:18px;height:64px;transition:height var(--t)}
.site-header.is-scrolled .nav-inner{height:56px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(34,211,197,.9),rgba(124,232,255,.35));
  box-shadow:0 8px 20px -10px rgba(34,211,197,.9);
  color:#04121A;font-size:15px;
}
.brand-text{
  font-size:17px;font-weight:700;letter-spacing:-.02em;white-space:nowrap;
  background:linear-gradient(90deg,#E9F1FA,#7CE8FF);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.nav-links{display:none;align-items:center;gap:4px;flex:1;min-width:0}
@media(min-width:1024px){.nav-links{display:flex}}
.nav-link{
  position:relative;padding:8px 10px;font-size:14px;color:var(--text-2);
  white-space:nowrap;border-radius:8px;transition:color var(--t),background var(--t);
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-hi));
  transition:left var(--t),right var(--t);opacity:.9;
}
.nav-link:hover{color:var(--text-1)}
.nav-link:hover::after{left:10px;right:10px}
.nav-link.is-active{color:var(--text-1)}
.nav-link.is-active::after{left:10px;right:10px}
.nav-tools{display:flex;align-items:center;gap:10px;margin-left:auto}
.command-search{
  display:none;align-items:center;gap:8px;width:210px;height:38px;padding:0 10px 0 12px;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-pill);
  transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
@media(min-width:1180px){.command-search{display:flex}}
.command-search i{color:var(--text-3);font-size:13px}
.command-search input{
  flex:1;min-width:0;background:transparent;border:none;outline:none;
  font-size:13px;color:var(--text-1);
}
.command-search input::placeholder{color:var(--text-3)}
.command-search:focus-within{
  border-color:var(--brand);background:rgba(34,211,197,.06);
  box-shadow:0 0 0 3px rgba(34,211,197,.14);
}
.command-search kbd{
  font-family:Inter,system-ui,sans-serif;font-size:11px;color:var(--text-3);
  border:1px solid var(--line-soft);border-radius:6px;padding:1px 6px;white-space:nowrap;
}
.icon-btn{
  width:38px;height:38px;display:none;place-items:center;border-radius:10px;
  background:var(--glass);border:1px solid var(--line);color:var(--text-2);
  transition:color var(--t),border-color var(--t),transform var(--t),background var(--t);
}
@media(min-width:1024px){.icon-btn{display:grid}}
.icon-btn:hover{color:var(--brand-hi);border-color:rgba(34,211,197,.5);transform:translateY(-2px)}
.nav-toggle{
  width:40px;height:40px;display:grid;place-items:center;border-radius:10px;
  background:var(--glass);border:1px solid var(--line);color:var(--text-1);font-size:16px;
}
@media(min-width:1024px){.nav-toggle{display:none}}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-weight:600;font-size:15px;padding:12px 22px;
  border:1px solid transparent;transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t),filter var(--t);
  white-space:nowrap;
}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-primary{
  background:linear-gradient(135deg,#22D3C5,#7CE8FF);
  color:#04121A;box-shadow:var(--sh-glow);
  animation:breathe 3.5s ease-in-out infinite;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px -12px rgba(34,211,197,.85)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.94)}
.btn-ghost{
  background:transparent;border-color:rgba(34,211,197,.42);color:var(--brand-hi);
}
.btn-ghost:hover{background:rgba(34,211,197,.08);transform:translateY(-2px);border-color:var(--brand)}
.btn-ghost:active{transform:translateY(1px);filter:brightness(.94)}
.btn-link{
  display:inline-flex;align-items:center;gap:8px;color:var(--brand-hi);
  font-size:14px;font-weight:600;transition:color var(--t);
}
.btn-link i{transition:transform var(--t)}
.btn-link:hover i{transform:translateX(4px)}
@keyframes breathe{
  0%,100%{opacity:.94}
  50%{opacity:1}
}
@media (prefers-reduced-motion:reduce){
  .btn-primary{animation:none}
  *{transition-duration:.01ms !important}
}

/* ---------- Drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;display:none;
  background:rgba(5,8,15,.92);backdrop-filter:blur(18px);
  padding:20px;overflow-y:auto;
}
.drawer.is-open{display:block}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:44px;margin-bottom:22px}
.drawer-close{width:40px;height:40px;border-radius:10px;background:var(--glass);border:1px solid var(--line);color:var(--text-1)}
.drawer-search{display:flex;align-items:center;gap:10px;height:46px;padding:0 14px;background:var(--glass);border:1px solid var(--line);border-radius:var(--r-pill);margin-bottom:20px}
.drawer-search input{flex:1;background:transparent;border:none;outline:none;font-size:15px}
.drawer-search i{color:var(--text-3)}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:22px}
.drawer-nav a{
  padding:14px 16px;border-radius:12px;background:var(--glass);border:1px solid var(--line-soft);
  font-size:15px;color:var(--text-2);
}
.drawer-nav a.is-active{color:var(--brand-hi);border-color:rgba(34,211,197,.45);background:rgba(34,211,197,.08)}
.drawer .btn{width:100%}

/* ---------- Hero ---------- */
.hero{position:relative;padding:56px 0 64px;overflow:hidden;border-bottom:1px solid var(--line-soft)}
@media(min-width:1024px){.hero{padding:84px 0 92px}}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(120,190,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,190,255,.055) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 30% 20%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 30% 20%,#000 0%,transparent 72%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;top:-180px;left:-120px;width:560px;height:560px;
  background:radial-gradient(circle,rgba(34,211,197,.18),transparent 65%);
  filter:blur(20px);pointer-events:none;
}
.hero-grid{position:relative;display:grid;gap:40px;align-items:center}
@media(min-width:1024px){
  .hero-grid{grid-template-columns:7fr 5fr;gap:48px}
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--accent-soft);border:1px solid rgba(217,162,68,.36);
  color:var(--accent);font-size:12.5px;letter-spacing:.02em;margin-bottom:18px;
}
.hero h1{
  font-size:clamp(30px,4.2vw,48px);
  margin-bottom:18px;
}
.hero h1 .hl{
  background:linear-gradient(100deg,#22D3C5,#7CE8FF);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{color:var(--text-2);font-size:17px;max-width:560px;margin-bottom:22px}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--glass);border:1px solid rgba(217,162,68,.36);
  color:var(--accent);font-size:12.5px;font-family:Inter,system-ui,sans-serif;
  letter-spacing:.02em;white-space:nowrap;
}
.badge-brand{border-color:rgba(34,211,197,.4);color:var(--brand-hi)}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
@media(max-width:639px){.hero-cta .btn{width:100%}}
.hero-stats{
  display:grid;grid-template-columns:repeat(2,1fr);gap:18px;
  padding-top:24px;border-top:1px solid var(--line-soft);
}
@media(min-width:768px){.hero-stats{grid-template-columns:repeat(4,1fr)}}
.stat-num{font-size:clamp(26px,3vw,34px);font-weight:700;color:var(--brand-hi);letter-spacing:-.02em}
.stat-num small{font-size:14px;color:var(--text-3);margin-left:2px;font-weight:500}
.stat-lb{font-size:13px;color:var(--text-3);margin-top:2px}

.hero-visual{position:relative;border-radius:var(--r-panel);overflow:hidden;min-height:320px;box-shadow:var(--sh-2)}
.hero-visual img.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5}
.hero-visual .veil{
  position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(5,8,15,.35),rgba(5,8,15,.86));
}
.hero-visual img.hero-main{
  position:relative;width:100%;height:100%;min-height:320px;aspect-ratio:16/10;
  object-fit:cover;border-radius:var(--r-panel);
  border:1px solid var(--line);
}
.float-card{
  position:absolute;padding:12px 14px;border-radius:14px;
  background:var(--glass-strong);border:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-1);font-size:12.5px;color:var(--text-2);
}
.float-card strong{display:block;font-size:16px;color:var(--text-1);font-weight:700}
.fc-1{left:16px;bottom:16px}
.fc-2{right:16px;top:16px;border-color:rgba(34,211,197,.4)}
.fc-2 strong{color:var(--brand-hi)}

/* ---------- Section basics ---------- */
.section{padding:56px 0}
@media(min-width:1024px){.section{padding:90px 0}}
.section-alt{background:var(--bg-1)}
.section-head{max-width:720px;margin-bottom:34px}
.section-head h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:14px;position:relative;padding-left:16px}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--accent),rgba(217,162,68,.2));
}
.section-head p{color:var(--text-2);font-size:16px}
.divider-glow{height:1px;width:40%;background:linear-gradient(90deg,var(--brand),transparent);border:none;margin:0 0 34px}

/* ---------- Pain points ---------- */
.pain-grid{display:grid;gap:18px;grid-template-columns:1fr}
@media(min-width:640px){.pain-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.pain-grid{grid-template-columns:repeat(4,1fr)}}
.pain-card{
  position:relative;padding:24px;border-radius:var(--r-card);
  background:var(--bg-1);border:1px solid var(--line-soft);
  overflow:hidden;transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.pain-card::after{
  content:"";position:absolute;left:0;bottom:16px;width:6px;height:34px;
  border-radius:0 6px 6px 0;background:rgba(255,154,140,.75);
}
.pain-card:hover{transform:translateY(-3px);border-color:rgba(255,154,140,.4);box-shadow:var(--sh-2)}
.pain-idx{font-family:Inter,system-ui,sans-serif;font-size:13px;color:var(--accent);letter-spacing:.08em;margin-bottom:12px}
.pain-card h3{font-size:17px;margin-bottom:10px;padding-left:12px}
.pain-card p{color:var(--text-2);font-size:14.5px;padding-left:12px}

/* ---------- Solution ---------- */
.solution-grid{display:grid;gap:32px}
@media(min-width:1024px){.solution-grid{grid-template-columns:4fr 8fr;gap:44px}}
.solution-side{position:relative}
@media(min-width:1024px){.solution-side{position:sticky;top:96px;align-self:start}}
.solution-side h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:16px;position:relative;padding-left:16px}
.solution-side h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--accent),rgba(217,162,68,.2));
}
.solution-side p{color:var(--text-2);margin-bottom:20px}
.solution-list{display:flex;flex-direction:column;gap:16px}
.solution-card{
  position:relative;display:block;padding:24px 26px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform var(--t),border-color var(--t),box-shadow var(--t),background var(--t);
}
.solution-card::before{
  content:"";position:absolute;left:0;top:20%;bottom:20%;width:2px;
  background:var(--brand);opacity:0;transition:opacity var(--t);
}
.solution-card:hover{transform:translateY(-3px);border-color:rgba(34,211,197,.45);box-shadow:var(--sh-2)}
.solution-card:hover::before{opacity:1}
.solution-card .num-idx{
  font-family:Inter,system-ui,sans-serif;font-size:13px;color:var(--accent);
  letter-spacing:.08em;margin-bottom:10px;
}
.solution-card h3{font-size:19px;margin-bottom:10px}
.solution-card p{color:var(--text-2);font-size:15px;margin-bottom:14px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--glass);border:1px solid var(--line-soft);
  font-size:12px;color:var(--text-3);
}
.tag-brand{border-color:rgba(34,211,197,.35);color:var(--brand-hi)}

/* ---------- Results ---------- */
.result-grid{display:grid;gap:36px}
@media(min-width:1024px){.result-grid{grid-template-columns:5fr 7fr;gap:48px}}
.metric-list{display:flex;flex-direction:column;gap:22px}
.metric{padding:20px 22px;border-radius:var(--r-card);background:var(--bg-2);border:1px solid var(--line-soft)}
.metric .num-big{
  font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums;
  font-size:clamp(36px,5vw,56px);font-weight:700;line-height:1.1;letter-spacing:-.03em;
  background:linear-gradient(100deg,#D9A244,#F3D08A);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.metric .num-big small{font-size:18px;margin-left:2px}
.metric span{display:block;color:var(--text-2);font-size:14.5px;margin-top:6px}
.timeline{position:relative;padding-left:28px;display:flex;flex-direction:column;gap:26px}
.timeline::before{
  content:"";position:absolute;left:5px;top:8px;bottom:8px;width:1px;
  background:linear-gradient(180deg,var(--brand),rgba(34,211,197,.08));
}
.tl-item{position:relative}
.tl-item::before{
  content:"";position:absolute;left:-28px;top:7px;width:11px;height:11px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 4px rgba(34,211,197,.16);
}
.tl-item h3{font-size:17px;margin-bottom:6px}
.tl-item p{color:var(--text-2);font-size:14.5px}
.tl-time{font-family:Inter,system-ui,sans-serif;font-size:12.5px;color:var(--accent);margin-bottom:6px;letter-spacing:.04em}

/* ---------- Testimonials ---------- */
.quote-grid{display:grid;gap:18px}
@media(min-width:1024px){.quote-grid{grid-template-columns:7fr 5fr;gap:20px}}
.quote-main{
  padding:30px;border-radius:var(--r-panel);background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--sh-1);position:relative;
}
.quote-mark{font-family:Georgia,serif;font-size:56px;line-height:1;color:rgba(34,211,197,.35);margin-bottom:6px}
.quote-main p{font-size:17px;color:var(--text-1);margin-bottom:22px}
.quote-foot{display:flex;align-items:center;gap:14px;border-top:1px solid var(--line-soft);padding-top:18px}
.avatar{
  width:48px;height:48px;border-radius:12px;flex-shrink:0;
  background:linear-gradient(140deg,rgba(34,211,197,.5),rgba(124,232,255,.18));
  border:1px solid var(--line);display:grid;place-items:center;
  font-weight:700;color:#04121A;font-size:15px;
}
.quote-foot strong{display:block;font-size:15px}
.quote-foot span{font-size:13px;color:var(--text-3)}
.quote-side{display:grid;gap:18px}
.quote-side .quote-mini{
  padding:22px;border-radius:var(--r-card);background:var(--bg-1);
  border:1px solid var(--line-soft);transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.quote-side .quote-mini:hover{transform:translateY(-3px);border-color:rgba(34,211,197,.4);box-shadow:var(--sh-2)}
.quote-mini p{font-size:14.5px;color:var(--text-2);margin-bottom:12px}
.quote-mini .who{font-size:13px;color:var(--accent)}

/* ---------- CMS list ---------- */
.list-head{display:flex;flex-wrap:wrap;gap:14px;align-items:flex-end;justify-content:space-between;margin-bottom:30px}
.list-head h2{font-size:clamp(22px,2.6vw,32px);position:relative;padding-left:16px}
.list-head h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--accent),rgba(217,162,68,.2));
}
.news-grid{display:grid;gap:20px}
@media(min-width:1024px){.news-grid{grid-template-columns:1.35fr 1fr}}
.news-main{
  display:flex;flex-direction:column;border-radius:var(--r-panel);overflow:hidden;
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--sh-1);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.news-main:hover{transform:translateY(-3px);border-color:rgba(34,211,197,.45);box-shadow:var(--sh-2)}
.news-main .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.news-main .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms cubic-bezier(.4,0,.2,1)}
.news-main:hover .thumb img{transform:scale(1.04)}
.news-main .body{padding:22px 24px 26px}
.news-main h3{font-size:20px;margin:14px 0 10px}
.news-main p{color:var(--text-2);font-size:15px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-side{display:flex;flex-direction:column;gap:14px}
.news-mini{
  display:flex;gap:14px;padding:16px;border-radius:var(--r-card);
  background:var(--bg-1);border:1px solid var(--line-soft);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.news-mini:hover{transform:translateY(-3px);border-color:rgba(34,211,197,.45);box-shadow:var(--sh-2)}
.news-mini .mini-thumb{
  width:78px;height:66px;flex-shrink:0;border-radius:10px;overflow:hidden;background:var(--bg-2);
}
.news-mini .mini-thumb img{width:100%;height:100%;object-fit:cover}
.news-mini h3{font-size:15px;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-mini p{font-size:13px;color:var(--text-3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.5px;color:var(--text-3)}
.meta-time{color:var(--accent);font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums}
.chip{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--glass);border:1px solid var(--line);color:var(--brand-hi);font-size:12px;
}
.empty-state{
  text-align:center;padding:48px 24px;border-radius:var(--r-panel);
  background:var(--glass);border:1px dashed var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.empty-state i{font-size:26px;color:var(--brand);margin-bottom:14px;display:block}
.empty-state p{color:var(--text-2);margin-bottom:18px}
.empty-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;gap:32px}
@media(min-width:1024px){.faq-grid{grid-template-columns:8fr 4fr;gap:44px}}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  border-radius:var(--r-card);background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);overflow:hidden;
}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;display:flex;align-items:center;gap:14px;
  font-size:16px;font-weight:600;transition:background var(--t),color var(--t);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:rgba(34,211,197,.05)}
.faq-item summary .sign{
  margin-left:auto;width:22px;height:22px;flex-shrink:0;position:relative;
  transition:transform 200ms cubic-bezier(.4,0,.2,1);
}
.faq-item summary .sign::before,
.faq-item summary .sign::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
}
.faq-item summary .sign::before{left:0;right:0;top:10px;height:2px}
.faq-item summary .sign::after{top:0;bottom:0;left:10px;width:2px;transition:opacity var(--t)}
.faq-item[open] summary .sign{transform:rotate(180deg)}
.faq-item[open] summary .sign::after{opacity:0}
.faq-body{
  padding:0 22px 20px 22px;margin-left:0;border-left:3px solid rgba(34,211,197,.55);
  margin-left:20px;padding-left:18px;color:var(--text-2);font-size:15px;
}
.faq-aside{
  padding:26px;border-radius:var(--r-panel);background:var(--bg-1);
  border:1px solid var(--line);box-shadow:var(--sh-1);
}
@media(min-width:1024px){.faq-aside{position:sticky;top:96px;align-self:start}}
.faq-aside h3{font-size:18px;margin-bottom:12px}
.faq-aside p{color:var(--text-2);font-size:14.5px;margin-bottom:18px}
.faq-aside ul{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}
.faq-aside li{display:flex;gap:10px;font-size:14px;color:var(--text-2)}
.faq-aside li i{color:var(--brand);margin-top:5px;font-size:12px}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;border-radius:var(--r-panel);overflow:hidden;
  background:var(--bg-1);border:1px solid var(--line);box-shadow:var(--sh-2);
}
.cta-panel::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--brand),transparent);
}
.cta-inner{display:grid;gap:32px;padding:34px 24px}
@media(min-width:1024px){.cta-inner{grid-template-columns:5fr 7fr;gap:48px;padding:52px 48px}}
.cta-copy h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:14px}
.cta-copy p{color:var(--text-2);margin-bottom:20px}
.cta-points{display:flex;flex-direction:column;gap:10px}
.cta-points li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2)}
.cta-points li i{color:var(--accent);margin-top:6px;font-size:11px}
.form-grid{display:grid;gap:16px}
@media(min-width:640px){.form-grid{grid-template-columns:1fr 1fr}}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:13.5px;color:var(--text-2)}
.field input,.field textarea{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-btn);
  padding:12px 14px;font-size:15px;color:var(--text-1);outline:none;
  transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field textarea:focus{
  border-color:var(--brand);background:rgba(34,211,197,.06);
  box-shadow:0 0 0 3px rgba(34,211,197,.14);
}
.field textarea{min-height:104px;resize:vertical}
.form-note{font-size:12.5px;color:var(--text-3);margin-top:12px;line-height:1.7}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line-soft);position:relative;margin-top:8px}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,197,.5),transparent);
}
.footer-grid{
  display:grid;gap:32px;padding:52px 0 36px;
  grid-template-columns:1fr;
}
@media(min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:4fr 2.4fr 2.4fr 3fr}}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{color:var(--text-2);font-size:14px;max-width:320px}
.footer-col h4{
  font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--text-3);
  margin-bottom:16px;font-weight:600;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--text-2);transition:color var(--t)}
.footer-col a:hover{color:var(--brand-hi)}
.footer-col p{font-size:14px;color:var(--text-2);margin-bottom:10px}
.footer-bottom{
  border-top:1px solid var(--line-soft);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px 20px;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--text-3);
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:16px}
.footer-bottom a:hover{color:var(--brand-hi)}

/* ---------- Utilities ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity 500ms cubic-bezier(.4,0,.2,1),transform 500ms cubic-bezier(.4,0,.2,1)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}}

/* roulang page: article */
:root{
  --bg-0:#05080F;
  --bg-1:#0A101C;
  --bg-2:#0F1728;
  --glass:rgba(255,255,255,.055);
  --glass-line:rgba(120,190,255,.16);
  --brand:#22D3C5;
  --brand-hi:#7CE8FF;
  --accent:#D9A244;
  --text-1:#E9F1FA;
  --text-2:rgba(233,241,250,.70);
  --text-3:rgba(233,241,250,.45);
  --line:rgba(255,255,255,.08);
  --coral:#FF9A8C;
  --coral-bg:rgba(255,122,107,.16);
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-2:0 16px 40px rgba(0,0,0,.45),0 0 0 1px rgba(34,211,197,.35);
  --sh-glow:0 10px 32px -10px rgba(34,211,197,.6);
  --t:200ms cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(800px 420px at 12% -6%,rgba(34,211,197,.14),transparent 65%),
    radial-gradient(700px 380px at 92% 4%,rgba(120,190,255,.10),transparent 62%),
    linear-gradient(180deg,#05080F 0%,#060B14 55%,#05080F 100%);
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{color:var(--text-1);margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 18px;}
ul,ol{margin:0;padding:0;}
::selection{background:rgba(34,211,197,.28);color:#fff;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1;}
@media (min-width:768px){.container{padding:0 24px;}}
@media (min-width:1440px){.container{max-width:1280px;}}
hr.line{border:0;height:1px;background:var(--line);margin:32px 0;}
.glow-line{height:1px;width:40%;background:linear-gradient(90deg,var(--brand),rgba(34,211,197,0));border:0;}

/* ============ header / nav ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,18,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background var(--t),box-shadow var(--t);
}
.site-header.is-scrolled{background:rgba(5,8,15,.94);box-shadow:0 8px 30px rgba(0,0,0,.5);}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,rgba(34,211,197,0),rgba(34,211,197,.55),rgba(34,211,197,0));
}
.nav-inner{display:flex;align-items:center;gap:22px;height:64px;transition:height var(--t);}
.site-header.is-scrolled .nav-inner{height:56px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(34,211,197,.9),rgba(120,190,255,.55));
  color:#04121A;font-size:16px;box-shadow:0 6px 18px -6px rgba(34,211,197,.8);
}
.brand-text{font-size:17px;font-weight:700;color:var(--text-1);letter-spacing:.02em;}
.nav-links{display:flex;align-items:center;gap:4px;flex:1 1 auto;}
.nav-link{
  position:relative;padding:10px 12px;font-size:14.5px;color:var(--text-2);
  border-radius:10px;transition:color var(--t),background var(--t);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:4px;width:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-hi));
  transform:translateX(-50%);transition:width var(--t);
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.04);}
.nav-link:hover::after{width:60%;}
.nav-link.is-active{color:var(--text-1);}
.nav-link.is-active::after{width:60%;}
.nav-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.command-search{
  display:flex;align-items:center;gap:8px;width:240px;height:38px;padding:0 12px;
  border-radius:999px;background:var(--glass);border:1px solid var(--glass-line);
  backdrop-filter:blur(14px);transition:border-color var(--t),box-shadow var(--t);
}
.command-search i{color:var(--text-3);font-size:13px;}
.command-search input{
  flex:1;min-width:0;background:none;border:0;outline:none;font-size:13.5px;color:var(--text-1);
}
.command-search input::placeholder{color:var(--text-3);}
.command-search kbd{
  font-size:11px;color:var(--text-3);border:1px solid var(--line);border-radius:6px;
  padding:1px 6px;background:rgba(255,255,255,.04);font-family:inherit;
}
.command-search:focus-within{border-color:rgba(34,211,197,.65);box-shadow:0 0 0 3px rgba(34,211,197,.14);}
.icon-btn{
  width:38px;height:38px;border-radius:999px;display:grid;place-items:center;
  background:var(--glass);border:1px solid var(--glass-line);color:var(--text-2);
  transition:all var(--t);
}
.icon-btn:hover{color:var(--brand);border-color:rgba(34,211,197,.5);transform:translateY(-2px);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-size:14.5px;font-weight:600;padding:11px 20px;
  transition:all var(--t);border:1px solid transparent;
}
.btn-primary{
  background:linear-gradient(120deg,var(--brand),var(--brand-hi));
  color:#04121A;box-shadow:var(--sh-glow);
  animation:breathe 3.5s ease-in-out infinite;
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 40px -12px rgba(34,211,197,.85);}
.btn-primary:active{transform:translateY(-1px);filter:brightness(.94);}
.btn-ghost{
  background:transparent;border-color:rgba(34,211,197,.45);color:var(--brand);
}
.btn-ghost:hover{background:rgba(34,211,197,.08);transform:translateY(-3px);}
.btn-sm{padding:9px 16px;font-size:13.5px;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14px;font-weight:600;
}
.btn-link i{transition:transform var(--t);}
.btn-link:hover i{transform:translateX(4px);}
@keyframes breathe{0%,100%{opacity:1;}50%{opacity:.88;}}
.nav-toggle{
  display:none;width:38px;height:38px;border-radius:10px;place-items:center;
  background:var(--glass);border:1px solid var(--glass-line);color:var(--text-1);
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .command-search{display:none;}
  .nav-toggle{display:grid;}
  .nav-tools .btn-primary{display:none;}
}
.mobile-drawer{
  position:fixed;inset:0;z-index:80;background:rgba(5,8,15,.96);
  backdrop-filter:blur(18px);padding:80px 22px 32px;display:none;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .drawer-close{position:absolute;top:18px;right:20px;width:40px;height:40px;border-radius:999px;background:var(--glass);border:1px solid var(--glass-line);color:var(--text-1);display:grid;place-items:center;}
.mobile-drawer a.m-link{
  display:block;padding:16px 6px;font-size:17px;color:var(--text-1);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a.m-link:hover{color:var(--brand);}
.drawer-search{
  display:flex;align-items:center;gap:10px;height:46px;padding:0 16px;margin-bottom:22px;
  border-radius:999px;background:var(--glass);border:1px solid var(--glass-line);
}
.drawer-search input{flex:1;background:none;border:0;outline:none;color:var(--text-1);font-size:14px;}

/* ============ article head ============ */
.article-main{padding:32px 0 80px;position:relative;z-index:1;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:26px;}
.breadcrumb a{color:var(--text-3);transition:color var(--t);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span.sep{color:rgba(233,241,250,.25);}
.article-head{margin-bottom:26px;}
.article-head h1{
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.25;margin:14px 0 18px;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  font-size:12.5px;background:var(--glass);border:1px solid var(--glass-line);
  color:var(--accent);backdrop-filter:blur(14px);
}
.badge.is-brand{color:var(--brand);}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:18px;font-size:13.5px;color:var(--text-3);}
.article-meta .mi{display:inline-flex;align-items:center;gap:7px;}
.article-meta .mi i{color:var(--accent);font-size:12.5px;}
.article-lead{font-size:16.5px;color:var(--text-2);margin-top:16px;}

.article-cover{margin:0 0 14px;border-radius:var(--r-panel);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1);}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.cover-caption{text-align:center;font-size:13px;color:var(--text-3);margin:0 0 34px;}

/* ============ layout with toc ============ */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;align-items:start;}
@media (min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:48px;}
}
.article-body-wrap{max-width:760px;width:100%;margin:0 auto;min-width:0;}
@media (min-width:1280px){.article-body-wrap{margin:0;}}

.article-side{display:none;}
@media (min-width:1280px){
  .article-side{display:block;position:sticky;top:92px;}
}
.toc-card{
  border-radius:var(--r-card);background:var(--glass);border:1px solid var(--glass-line);
  backdrop-filter:blur(14px);padding:20px;box-shadow:var(--sh-1);
}
.toc-card h3{font-size:14px;letter-spacing:.08em;text-transform:uppercase;color:var(--text-3);margin-bottom:14px;font-weight:600;}
.toc-card ul{list-style:none;}
.toc-card li{margin-bottom:2px;}
.toc-card a{
  display:block;font-size:13.5px;color:var(--text-2);padding:7px 10px;border-radius:8px;
  border-left:2px solid transparent;transition:all var(--t);line-height:1.5;
}
.toc-card a:hover{color:var(--text-1);background:rgba(255,255,255,.04);}
.toc-card a.is-current{color:var(--brand);border-left-color:var(--brand);background:rgba(34,211,197,.08);}
.toc-card a.lv3{padding-left:22px;font-size:13px;color:var(--text-3);}
.side-cta{
  margin-top:18px;border-radius:var(--r-card);padding:20px;
  background:linear-gradient(150deg,rgba(34,211,197,.14),rgba(15,23,40,.9));
  border:1px solid rgba(34,211,197,.28);
}
.side-cta h4{font-size:15px;margin-bottom:8px;}
.side-cta p{font-size:13.5px;color:var(--text-2);margin-bottom:14px;line-height:1.7;}
.side-cta .btn{width:100%;}

/* ============ article content ============ */
.article-content{font-size:17px;line-height:1.85;color:var(--text-2);}
.article-content > *:first-child{margin-top:0;}
.article-content p{margin:0 0 18px;}
.article-content a{color:var(--brand);border-bottom:1px solid rgba(34,211,197,.35);transition:all var(--t);}
.article-content a:hover{color:var(--brand-hi);border-bottom-color:var(--brand-hi);}
.article-content h2{
  position:relative;font-size:clamp(22px,2.4vw,24px);margin:42px 0 16px;padding-left:14px;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--accent),rgba(217,162,68,.12));
}
.article-content h3{font-size:clamp(18px,2vw,20px);margin:30px 0 12px;color:var(--text-1);}
.article-content h4{font-size:17px;margin:24px 0 10px;color:var(--text-1);}
.article-content ul,.article-content ol{margin:16px 0 22px;padding:0;}
.article-content ul{list-style:none;}
.article-content ul > li{position:relative;padding-left:22px;margin:9px 0;}
.article-content ul > li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px rgba(34,211,197,.6);
}
.article-content ol{list-style:none;counter-reset:oli;}
.article-content ol > li{position:relative;padding-left:26px;margin:9px 0;counter-increment:oli;}
.article-content ol > li::before{
  content:counter(oli);position:absolute;left:0;top:.34em;font-size:12px;font-weight:700;
  color:var(--accent);font-variant-numeric:tabular-nums;
}
.article-content blockquote{
  margin:24px 0;padding:16px 20px;border-radius:0 12px 12px 0;
  background:var(--glass);border-left:3px solid var(--brand);
  backdrop-filter:blur(14px);color:var(--text-2);
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{border-radius:14px;margin:22px auto;box-shadow:var(--sh-1);}
.article-content table{width:100%;border-collapse:collapse;font-size:15px;margin:22px 0;}
.article-content th{
  background:rgba(255,255,255,.06);color:var(--text-1);font-weight:600;text-align:left;
  padding:12px 14px;border-bottom:1px solid var(--glass-line);white-space:nowrap;
}
.article-content td{padding:12px 14px;border-bottom:1px solid rgba(255,255,255,.05);vertical-align:top;}
.article-content tbody tr:nth-child(even) td{background:rgba(255,255,255,.018);}
.article-content tbody tr:hover td{background:rgba(34,211,197,.05);}
.article-content code{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px;
  background:rgba(255,255,255,.07);border:1px solid var(--line);border-radius:6px;padding:1px 6px;color:var(--brand-hi);
}
.article-content pre{
  background:var(--bg-2);border:1px solid var(--line);border-radius:14px;padding:18px;
  overflow-x:auto;font-size:14px;line-height:1.7;
}
@media (max-width:640px){
  .article-content{font-size:16px;}
  .article-content table{display:block;overflow-x:auto;white-space:nowrap;-webkit-overflow-scrolling:touch;}
}

/* ============ empty state ============ */
.empty-state{
  text-align:center;padding:52px 24px;border-radius:var(--r-panel);
  background:var(--glass);border:1px solid var(--glass-line);backdrop-filter:blur(14px);
}
.empty-state .empty-icon{
  width:58px;height:58px;margin:0 auto 18px;border-radius:16px;display:grid;place-items:center;
  background:rgba(34,211,197,.12);border:1px solid rgba(34,211,197,.32);color:var(--brand);font-size:22px;
}
.empty-state h2{font-size:20px;margin-bottom:10px;}
.empty-state p{font-size:14.5px;color:var(--text-3);margin-bottom:22px;}

/* ============ tags / post nav / related ============ */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:38px 0 0;}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 13px;border-radius:999px;
  font-size:12.5px;background:var(--glass);border:1px solid var(--glass-line);color:var(--text-2);
  transition:all var(--t);
}
.tag:hover{color:var(--brand);border-color:rgba(34,211,197,.45);transform:translateY(-2px);}
.post-nav{display:grid;grid-template-columns:1fr;gap:16px;margin-top:34px;}
@media (min-width:640px){.post-nav{grid-template-columns:1fr 1fr;}}
.post-nav-card{
  display:block;padding:20px;border-radius:var(--r-card);background:var(--glass);
  border:1px solid var(--glass-line);backdrop-filter:blur(14px);box-shadow:var(--sh-1);
  transition:all var(--t);
}
.post-nav-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(34,211,197,.4);}
.post-nav-card .pn-label{font-size:12.5px;color:var(--text-3);letter-spacing:.06em;margin-bottom:8px;display:flex;align-items:center;gap:8px;}
.post-nav-card .pn-title{font-size:15.5px;color:var(--text-1);font-weight:600;line-height:1.5;}
.post-nav-card .pn-desc{font-size:13.5px;color:var(--text-3);margin-top:6px;}

.section-title{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin:60px 0 22px;}
.section-title h2{font-size:clamp(20px,2.2vw,24px);}
.section-title h2::before{content:"";display:block;width:34px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--brand),rgba(34,211,197,0));margin-bottom:12px;}
.rel-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:640px){.rel-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.rel-grid{grid-template-columns:repeat(3,1fr);}}
.rel-card{
  display:flex;flex-direction:column;border-radius:var(--r-card);overflow:hidden;
  background:var(--glass);border:1px solid var(--glass-line);backdrop-filter:blur(14px);
  box-shadow:var(--sh-1);transition:all var(--t);height:100%;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(34,211,197,.4);}
.rel-card .rel-img{position:relative;overflow:hidden;}
.rel-card .rel-img img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 400ms cubic-bezier(.4,0,.2,1);}
.rel-card:hover .rel-img img{transform:scale(1.05);}
.rel-card .rel-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-card h3{font-size:16.5px;}
.rel-card p{font-size:14px;color:var(--text-3);margin:0;line-height:1.7;}
.rel-card .rel-more{margin-top:auto;color:var(--brand);font-size:13.5px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.rel-card:hover .rel-more i{transform:translateX(4px);}
.rel-card .rel-more i{transition:transform var(--t);}

/* ============ cta band ============ */
.cta-band{
  margin-top:64px;border-radius:var(--r-panel);padding:1px;
  background:linear-gradient(120deg,rgba(34,211,197,.55),rgba(120,190,255,.16),rgba(255,255,255,.05));
  box-shadow:var(--sh-1);
}
.cta-band-inner{
  border-radius:19px;background:linear-gradient(160deg,rgba(10,16,28,.96),rgba(15,23,40,.96));
  padding:38px 28px;display:grid;gap:26px;align-items:center;
}
@media (min-width:900px){.cta-band-inner{grid-template-columns:1.2fr 1fr;padding:44px 40px;}}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:10px;}
.cta-band p{font-size:14.5px;color:var(--text-2);margin:0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
@media (max-width:639px){.cta-actions .btn{width:100%;}}

/* ============ footer ============ */
.site-footer{
  position:relative;margin-top:40px;background:linear-gradient(180deg,rgba(10,16,28,.6),rgba(5,8,15,.98));
  border-top:1px solid var(--line);padding:64px 0 28px;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(34,211,197,0),rgba(34,211,197,.6),rgba(34,211,197,0));
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px;}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;}}
.footer-brand p{font-size:14px;color:var(--text-3);margin:16px 0 0;max-width:340px;line-height:1.8;}
.footer-col h4{
  font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--text-1);
  margin-bottom:16px;font-weight:600;
}
.footer-col ul{list-style:none;}
.footer-col li{margin-bottom:12px;}
.footer-col a{font-size:14px;color:var(--text-3);transition:color var(--t);}
.footer-col a:hover{color:var(--brand);}
.footer-col p{font-size:13.5px;color:var(--text-3);margin:0 0 12px;line-height:1.8;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  font-size:12.5px;color:var(--text-3);
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:16px;}
.footer-bottom .links a{color:var(--text-3);transition:color var(--t);}
.footer-bottom .links a:hover{color:var(--brand);}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--bg-0);}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:8px;}
::-webkit-scrollbar-thumb:hover{background:rgba(34,211,197,.45);}

/* roulang page: category1 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A101C;
  --bg-2:#0F1728;
  --brand:#22D3C5;
  --brand-hi:#7CE8FF;
  --accent:#D9A244;
  --text-1:#E9F1FA;
  --text-2:rgba(233,241,250,.70);
  --text-3:rgba(233,241,250,.45);
  --line:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.055);
  --glass-line:rgba(120,190,255,.16);
  --danger-bg:rgba(255,122,107,.16);
  --danger-tx:#FF9A8C;
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-2:0 16px 40px rgba(0,0,0,.45), 0 0 0 1px rgba(34,211,197,.35);
  --sh-glow:0 10px 32px -10px rgba(34,211,197,.6);
  --ease:cubic-bezier(.4,0,.2,1);
  --nav-h:64px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Noto Sans SC','HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  color:var(--text-2);
  background:
    radial-gradient(900px 520px at 12% -8%, rgba(34,211,197,.10), transparent 62%),
    radial-gradient(760px 460px at 92% 4%, rgba(217,162,68,.07), transparent 60%),
    var(--bg-0);
  overflow-x:hidden;
}
h1,h2,h3,h4{color:var(--text-1);line-height:1.25;font-weight:700;letter-spacing:-.01em;margin:0;}
h1{font-size:clamp(30px,4.2vw,48px);}
h2{font-size:clamp(22px,2.6vw,32px);}
h3{font-size:clamp(18px,2vw,22px);}
p{margin:0 0 14px;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),opacity .2s var(--ease);}
img{max-width:100%;display:block;border-radius:14px;}
button,input,select,textarea{font:inherit;color:inherit;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(34,211,197,.28);color:#fff;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#070C16;}
::-webkit-scrollbar-thumb{background:rgba(120,190,255,.22);border-radius:999px;border:2px solid #070C16;}
::-webkit-scrollbar-thumb:hover{background:rgba(34,211,197,.45);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media(min-width:1440px){.container{max-width:1280px;padding:0 24px;}}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,8,15,.74);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .25s var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,197,.5),transparent);
  pointer-events:none;
}
.site-header.is-scrolled{background:rgba(5,8,15,.94);}
.nav-inner{
  height:var(--nav-h);
  display:flex;align-items:center;gap:18px;
  transition:height .25s var(--ease);
}
.site-header.is-scrolled .nav-inner{height:56px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(34,211,197,.28),rgba(217,162,68,.18));
  border:1px solid rgba(34,211,197,.4);
  color:var(--brand-hi);font-size:15px;
  box-shadow:0 0 0 1px rgba(255,255,255,.03) inset;
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--text-1);white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-link{
  position:relative;padding:8px 12px;font-size:15px;color:var(--text-2);
  border-radius:10px;white-space:nowrap;
}
.nav-link::after{
  content:"";display:block;height:2px;width:0;margin:4px auto 0;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-hi));
  transition:width .22s var(--ease);
}
.nav-link:hover{color:var(--text-1);}
.nav-link:hover::after{width:70%;}
.nav-link.is-active{color:var(--brand-hi);}
.nav-link.is-active::after{width:70%;}
.nav-tools{display:flex;align-items:center;gap:10px;margin-left:auto;}
.command-search{
  display:flex;align-items:center;gap:8px;width:240px;height:38px;padding:0 12px;
  border-radius:var(--r-pill);
  background:var(--glass);border:1px solid var(--glass-line);
  backdrop-filter:blur(14px);color:var(--text-3);font-size:13px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.command-search i{color:var(--brand);font-size:13px;}
.command-search input{
  flex:1;min-width:0;background:transparent;border:0;outline:0;font-size:13px;color:var(--text-1);
}
.command-search input::placeholder{color:var(--text-3);}
.command-search:focus-within{
  border-color:rgba(34,211,197,.6);
  box-shadow:0 0 0 3px rgba(34,211,197,.14), 0 8px 24px -12px rgba(34,211,197,.7);
  background:rgba(255,255,255,.07);
}
.command-search kbd{
  font-family:inherit;font-size:11px;padding:2px 7px;border-radius:6px;
  background:rgba(255,255,255,.07);border:1px solid var(--line);color:var(--text-3);white-space:nowrap;
}
.icon-btn{
  width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  background:var(--glass);border:1px solid var(--glass-line);color:var(--text-2);
  transition:all .2s var(--ease);
}
.icon-btn:hover{color:var(--brand-hi);border-color:rgba(34,211,197,.55);transform:translateY(-2px);}
.nav-toggle{
  display:none;width:38px;height:38px;border-radius:10px;place-items:center;
  background:var(--glass);border:1px solid var(--glass-line);color:var(--text-1);cursor:pointer;
}
.nav-toggle:hover{border-color:rgba(34,211,197,.55);color:var(--brand-hi);}

/* drawer */
.nav-drawer{
  position:fixed;inset:0;z-index:80;display:flex;flex-direction:column;gap:18px;
  padding:20px;
  background:rgba(5,8,15,.96);backdrop-filter:blur(18px);
  transform:translateY(-102%);transition:transform .28s var(--ease);
}
.nav-drawer.is-open{transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;cursor:pointer;
  background:var(--glass);border:1px solid var(--glass-line);color:var(--text-1);
}
.drawer-search{width:100%;height:44px;}
.drawer-links{display:flex;flex-direction:column;gap:4px;}
.drawer-links a{
  padding:14px 14px;border-radius:12px;font-size:17px;color:var(--text-2);
  border:1px solid transparent;
}
.drawer-links a:hover{background:var(--glass);color:var(--text-1);border-color:var(--glass-line);}
.drawer-links a.is-active{color:var(--brand-hi);background:rgba(34,211,197,.08);border-color:rgba(34,211,197,.28);}
.drawer-cta{width:100%;justify-content:center;margin-top:auto;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn:active{transform:translateY(1px);filter:brightness(.94);}
.btn-primary{
  background:linear-gradient(135deg,var(--brand-hi),var(--brand));
  color:#04121A;box-shadow:var(--sh-glow);
  animation:ctaPulse 3.5s ease-in-out infinite;
}
@keyframes ctaPulse{0%,100%{opacity:1;}50%{opacity:.9;}}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 42px -10px rgba(34,211,197,.78);}
.btn-ghost{
  background:rgba(255,255,255,.04);border-color:rgba(34,211,197,.35);color:var(--text-1);
}
.btn-ghost:hover{background:rgba(34,211,197,.08);border-color:rgba(34,211,197,.7);transform:translateY(-2px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand-hi);font-size:14px;font-weight:600;
}
.btn-link i{transition:transform .2s var(--ease);}
.btn-link:hover i{transform:translateX(4px);}

/* ---------- badges / tags ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.02em;
  background:var(--glass);border:1px solid var(--glass-line);color:var(--brand-hi);
  backdrop-filter:blur(10px);white-space:nowrap;
}
.badge-accent{color:var(--accent);border-color:rgba(217,162,68,.38);}
.badge-plain{color:var(--text-2);}
.tag-list{display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- sections ---------- */
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{margin-bottom:36px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.14em;
  color:var(--accent);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--accent),transparent);}
.h2-bar{
  position:relative;padding-left:16px;margin-bottom:14px;
}
.h2-bar::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--accent),rgba(217,162,68,.15));
}
.lead{font-size:17px;color:var(--text-2);max-width:820px;}
.divider-glow{
  height:1px;width:40%;max-width:420px;margin:30px 0;
  background:linear-gradient(90deg,rgba(34,211,197,.75),transparent);
}

/* ---------- page hero ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.34;
}
.page-hero-mask{
  position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(5,8,15,.72),rgba(5,8,15,.9) 62%,var(--bg-0)),
    radial-gradient(700px 320px at 18% 40%, rgba(34,211,197,.18), transparent 70%);
}
.page-hero-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(120,190,255,.07) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(120,190,255,.07) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(620px 320px at 22% 46%, #000 12%, transparent 78%);
  -webkit-mask-image:radial-gradient(620px 320px at 22% 46%, #000 12%, transparent 78%);
}
.page-hero-inner{
  position:relative;padding:52px 0 56px;min-height:352px;
  display:flex;flex-direction:column;justify-content:center;
}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px;}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--brand-hi);}
.crumb .sep{opacity:.5;}
.page-hero h1{max-width:820px;}
.hero-sub{font-size:17px;color:var(--text-2);margin-top:14px;max-width:720px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}

/* ---------- filter tag bar ---------- */
.tag-bar{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  padding:14px 18px;border-radius:var(--r-pill);
  background:var(--glass);border:1px solid var(--glass-line);backdrop-filter:blur(14px);
  margin-bottom:22px;
}
.tag-bar .label{font-size:13px;color:var(--text-3);margin-right:4px;white-space:nowrap;}
.chip{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 14px;border-radius:var(--r-pill);
  font-size:13px;color:var(--text-2);background:rgba(255,255,255,.04);border:1px solid var(--line);
  transition:all .2s var(--ease);
}
.chip.is-on{color:#04121A;background:linear-gradient(135deg,var(--brand-hi),var(--brand));border-color:transparent;font-weight:600;}
.chip:hover{border-color:rgba(34,211,197,.5);color:var(--text-1);}

/* ---------- table ---------- */
.panel{
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
  border:1px solid var(--glass-line);border-radius:var(--r-panel);
  backdrop-filter:blur(14px);box-shadow:var(--sh-1);
}
.table-wrap{overflow-x:auto;position:relative;}
.scroll-hint{
  display:none;align-items:center;gap:8px;
  font-size:12px;color:var(--accent);padding:10px 4px 0;
}
.spec-table{width:100%;min-width:1000px;border-collapse:separate;border-spacing:0;}
.spec-table thead th{
  position:sticky;top:0;z-index:3;
  background:rgba(15,23,40,.96);backdrop-filter:blur(10px);
  font-size:13px;font-weight:600;color:var(--text-1);text-align:left;
  padding:16px 18px;border-bottom:1px solid var(--glass-line);white-space:nowrap;
  letter-spacing:.02em;
}
.spec-table tbody td{
  padding:16px 18px;font-size:14.5px;color:var(--text-2);
  border-bottom:1px solid rgba(255,255,255,.055);vertical-align:top;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.spec-table tbody tr:last-child td{border-bottom:0;}
.spec-table tbody tr:hover td{background:rgba(34,211,197,.06);color:var(--text-1);}
.spec-table th:first-child,
.spec-table td:first-child{
  position:sticky;left:0;z-index:2;background:#0C1424;
  box-shadow:1px 0 0 rgba(255,255,255,.06);
  font-weight:600;color:var(--text-1);white-space:nowrap;
}
.spec-table tbody tr:hover td:first-child{background:#111D31;color:var(--brand-hi);}
.spec-table td strong{color:var(--text-1);font-weight:600;}
.spec-table .mono{font-variant-numeric:tabular-nums;color:var(--accent);}

/* ---------- stat band ---------- */
.stat-band{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  border-radius:var(--r-panel);overflow:hidden;
  background:var(--line);border:1px solid var(--glass-line);
}
.stat-cell{
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  padding:26px 24px;backdrop-filter:blur(14px);
}
.stat-num{
  font-size:clamp(32px,4.4vw,48px);font-weight:700;line-height:1.05;
  background:linear-gradient(135deg,var(--accent),#F2CE8A);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  font-variant-numeric:tabular-nums;
}
.stat-num small{font-size:15px;font-weight:600;-webkit-text-fill-color:var(--accent);margin-left:4px;}
.stat-cell p{margin:10px 0 0;font-size:14px;color:var(--text-2);}

/* ---------- split : sticky left ---------- */
.split{display:grid;grid-template-columns:4fr 8fr;gap:40px;align-items:start;}
.split-aside{position:sticky;top:96px;}
.split-aside .note{
  margin-top:18px;padding:18px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--glass-line);font-size:14px;color:var(--text-2);
}
.long-list{display:flex;flex-direction:column;gap:16px;}
.long-card{
  position:relative;display:grid;grid-template-columns:60px 1fr;gap:18px;
  padding:24px 26px;border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
  border:1px solid var(--glass-line);backdrop-filter:blur(14px);
  box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.long-card::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),transparent);
  opacity:0;transition:opacity .2s var(--ease);
}
.long-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(34,211,197,.35);}
.long-card:hover::before{opacity:1;}
.long-idx{
  font-size:22px;font-weight:700;color:var(--accent);line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.long-card h3{margin-bottom:8px;}
.long-card p{margin-bottom:12px;font-size:15px;}

/* ---------- param cards ---------- */
.card-grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.param-card{
  padding:26px 24px;border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
  border:1px solid var(--glass-line);backdrop-filter:blur(14px);box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  display:flex;flex-direction:column;gap:12px;
}
.param-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(34,211,197,.4);}
.param-card .idx{font-size:13px;letter-spacing:.12em;color:var(--accent);font-weight:700;}
.param-card p{font-size:14.5px;margin:0;}
.param-card .list-mini li{
  position:relative;padding-left:14px;font-size:14px;color:var(--text-2);margin-top:6px;
}
.param-card .list-mini li::before{
  content:"";position:absolute;left:0;top:.68em;width:6px;height:6px;border-radius:2px;
  background:var(--brand);opacity:.85;
}

/* ---------- media block ---------- */
.media-block{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:center;}
.media-figure{position:relative;border-radius:var(--r-panel);overflow:hidden;border:1px solid var(--glass-line);box-shadow:var(--sh-1);}
.media-figure img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.media-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(5,8,15,.72));
}
.media-float{
  position:absolute;left:18px;bottom:18px;right:18px;z-index:2;
  display:flex;flex-wrap:wrap;gap:8px;
}
.step-list{display:flex;flex-direction:column;gap:18px;}
.step{
  display:grid;grid-template-columns:38px 1fr;gap:16px;align-items:start;
}
.step .dot{
  width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
  font-size:13px;font-weight:700;color:#04121A;
  background:linear-gradient(135deg,var(--brand-hi),var(--brand));
  box-shadow:0 0 0 4px rgba(34,211,197,.12);
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:17px;margin-bottom:4px;}
.step p{font-size:14.5px;margin:0;}

/* ---------- service strip ---------- */
.service-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  border-radius:var(--r-panel);overflow:hidden;background:var(--line);
  border:1px solid var(--glass-line);
}
.service-item{
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  padding:24px;backdrop-filter:blur(14px);
}
.service-item i{color:var(--brand);font-size:18px;margin-bottom:12px;display:block;}
.service-item h3{font-size:16px;margin-bottom:6px;}
.service-item p{font-size:14px;margin:0;}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;border-radius:var(--r-panel);
  background:linear-gradient(150deg,rgba(34,211,197,.10),rgba(255,255,255,.035) 46%,rgba(255,255,255,.015));
  border:1px solid var(--glass-line);backdrop-filter:blur(16px);
  box-shadow:var(--sh-1);
  padding:40px;
}
.cta-panel::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,197,.85),transparent);
}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13px;color:var(--text-3);}
.field input,.field textarea{
  width:100%;background:rgba(255,255,255,.045);border:1px solid var(--glass-line);
  border-radius:12px;padding:12px 14px;font-size:15px;color:var(--text-1);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field textarea{resize:vertical;min-height:96px;}
.field input::placeholder,.field textarea::placeholder{color:rgba(233,241,250,.32);}
.field input:focus,.field textarea:focus{
  outline:none;border-color:rgba(34,211,197,.65);background:rgba(255,255,255,.07);
  box-shadow:0 0 0 3px rgba(34,211,197,.14), 0 10px 28px -14px rgba(34,211,197,.75);
}
.form-note{font-size:12.5px;color:var(--text-3);margin-top:14px;}

/* ---------- footer ---------- */
.site-footer{
  position:relative;background:var(--bg-1);border-top:1px solid var(--line);
  padding:64px 0 0;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,197,.6),transparent);
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:36px;padding-bottom:40px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:340px;}
.footer-col h4{
  font-size:13px;letter-spacing:.14em;color:var(--text-3);font-weight:600;
  text-transform:uppercase;margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--brand-hi);}
.footer-col p{font-size:14px;color:var(--text-2);margin-bottom:10px;}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:16px;}
.footer-bottom .links a{color:var(--text-3);}
.footer-bottom .links a:hover{color:var(--brand-hi);}

/* ---------- responsive ---------- */
@media(max-width:1279px){
  .split{grid-template-columns:1fr;gap:28px;}
  .split-aside{position:static;}
}
@media(max-width:1023px){
  .nav-links{display:none;}
  .command-search{display:none;}
  .icon-btn{display:none;}
  .nav-toggle{display:grid;}
  .site-header .btn-primary{display:none;}
  .card-grid-4{grid-template-columns:repeat(2,1fr);}
  .stat-band{grid-template-columns:repeat(2,1fr);}
  .service-strip{grid-template-columns:repeat(2,1fr);}
  .media-block{grid-template-columns:1fr;gap:28px;}
  .cta-grid{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .scroll-hint{display:flex;}
  .section{padding:72px 0;}
}
@media(max-width:639px){
  body{font-size:15.5px;}
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .page-hero-inner{padding:40px 0 44px;min-height:320px;}
  .hero-actions .btn{width:100%;}
  .hero-actions{flex-direction:column;}
  .card-grid-4{grid-template-columns:1fr;}
  .stat-band{grid-template-columns:1fr;}
  .service-strip{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .form-grid{grid-template-columns:1fr;}
  .cta-panel{padding:26px 20px;}
  .long-card{grid-template-columns:1fr;gap:12px;padding:22px 20px;}
  .long-idx{font-size:18px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category2 */
:root{
    --bg-0:#05080F;
    --bg-1:#0A101C;
    --bg-2:#0F1728;
    --glass:rgba(255,255,255,.055);
    --glass-strong:rgba(255,255,255,.08);
    --glass-border:rgba(120,190,255,.16);
    --line:rgba(255,255,255,.08);
    --brand:#22D3C5;
    --brand-hi:#7CE8FF;
    --accent:#D9A244;
    --text-1:#E9F1FA;
    --text-2:rgba(233,241,250,.70);
    --text-3:rgba(233,241,250,.45);
    --warn-bg:rgba(255,122,107,.16);
    --warn:#FF9A8C;
    --r-card:16px;
    --r-panel:20px;
    --r-btn:12px;
    --r-pill:999px;
    --sh-1:0 8px 24px rgba(0,0,0,.35);
    --sh-2:0 16px 40px rgba(0,0,0,.45), 0 0 0 1px rgba(34,211,197,.35);
    --sh-glow:0 10px 32px -10px rgba(34,211,197,.6);
    --dur:200ms;
    --ease:cubic-bezier(.4,0,.2,1);
    --container:1200px;
  }
  @media (min-width:1440px){ :root{ --container:1280px; } }

  *,*::before,*::after{ box-sizing:border-box; }
  html{ scroll-behavior:smooth; }
  html body{
    margin:0;
    background:var(--bg-0);
    background-image:radial-gradient(900px 500px at 12% -8%, rgba(34,211,197,.10), transparent 60%),
                     radial-gradient(700px 420px at 92% 4%, rgba(217,162,68,.07), transparent 62%);
    background-repeat:no-repeat;
    color:var(--text-1);
    font-family:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:16px;
    font-weight:400;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{ max-width:100%; display:block; }
  a{ color:inherit; text-decoration:none; }
  button,input,textarea,select{ font:inherit; color:inherit; }
  h1,h2,h3,h4{ line-height:1.25; letter-spacing:-.01em; font-weight:700; }
  ::selection{ background:rgba(34,211,197,.28); color:#fff; }
  :focus-visible{ outline:2px solid var(--brand); outline-offset:2px; }

  ::-webkit-scrollbar{ width:10px; height:10px; }
  ::-webkit-scrollbar-track{ background:var(--bg-0); }
  ::-webkit-scrollbar-thumb{ background:rgba(120,190,255,.18); border-radius:999px; border:2px solid var(--bg-0); }
  ::-webkit-scrollbar-thumb:hover{ background:rgba(34,211,197,.42); }

  .container{ width:100%; max-width:var(--container); margin:0 auto; padding-left:20px; padding-right:20px; }
  @media (min-width:768px){ .container{ padding-left:24px; padding-right:24px; } }

  [id]{ scroll-margin-top:84px; }

  /* ---------- header / nav ---------- */
  .site-header{
    position:sticky; top:0; z-index:60;
    background:rgba(5,8,15,.72);
    -webkit-backdrop-filter:blur(14px); backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
    transition:background var(--dur) var(--ease);
  }
  .site-header::after{
    content:""; position:absolute; left:0; right:0; bottom:-1px; height:1px;
    background:linear-gradient(90deg, transparent, rgba(34,211,197,.5), transparent);
    pointer-events:none;
  }
  .site-header.is-scrolled{ background:rgba(5,8,15,.93); }
  .nav-inner{ display:flex; align-items:center; gap:16px; height:64px; transition:height var(--dur) var(--ease); }
  .site-header.is-scrolled .nav-inner{ height:56px; }
  .brand{ display:inline-flex; align-items:center; gap:10px; flex:0 0 auto; }
  .brand-mark{
    width:34px; height:34px; border-radius:10px; display:grid; place-items:center;
    background:linear-gradient(135deg, rgba(34,211,197,.24), rgba(217,162,68,.18));
    border:1px solid var(--glass-border); color:var(--brand-hi); font-size:15px;
    transition:box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
  }
  .brand:hover .brand-mark{ transform:translateY(-2px); box-shadow:0 0 0 1px rgba(34,211,197,.45), 0 10px 24px -12px rgba(34,211,197,.8); }
  .brand-text{ font-size:17px; font-weight:700; letter-spacing:-.01em; color:var(--text-1); white-space:nowrap; }

  .nav-links{ display:flex; align-items:center; gap:2px; margin-left:6px; }
  .nav-link{
    position:relative; display:inline-block; padding:8px 12px; border-radius:10px;
    font-size:14.5px; color:var(--text-2); white-space:nowrap;
    transition:color var(--dur) var(--ease), background var(--dur) var(--ease);
  }
  .nav-link::after{
    content:""; position:absolute; left:50%; right:50%; bottom:2px; height:2px; border-radius:2px;
    background:linear-gradient(90deg, var(--brand), var(--brand-hi));
    transition:left var(--dur) var(--ease), right var(--dur) var(--ease);
  }
  .nav-link:hover{ color:var(--text-1); background:rgba(255,255,255,.04); }
  .nav-link:hover::after,
  .nav-link.is-active::after{ left:12px; right:12px; }
  .nav-link.is-active{ color:var(--text-1); font-weight:600; }

  .nav-tools{ display:flex; align-items:center; gap:10px; margin-left:auto; }
  .command-search{
    display:flex; align-items:center; gap:8px; width:240px; height:38px; padding:0 12px;
    border-radius:var(--r-pill); background:var(--glass); border:1px solid var(--glass-border);
    transition:border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
  }
  .command-search i{ color:var(--text-3); font-size:13px; }
  .command-search input{
    flex:1 1 auto; min-width:0; background:transparent; border:0; outline:none;
    font-size:13.5px; color:var(--text-1); padding:0;
  }
  .command-search input::placeholder{ color:var(--text-3); }
  .command-search kbd{
    font-family:inherit; font-size:11px; line-height:1; padding:4px 6px; border-radius:6px;
    border:1px solid var(--line); background:rgba(255,255,255,.04); color:var(--text-3); white-space:nowrap;
  }
  .command-search:focus-within{
    border-color:rgba(34,211,197,.7);
    box-shadow:0 0 0 3px rgba(34,211,197,.14), 0 0 22px -8px rgba(34,211,197,.7);
    background:rgba(255,255,255,.07);
  }
  .icon-btn{
    width:38px; height:38px; display:grid; place-items:center; flex:0 0 auto;
    border-radius:50%; background:var(--glass); border:1px solid var(--line); color:var(--text-2);
    transition:color var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
  }
  .icon-btn:hover{ color:var(--brand-hi); border-color:rgba(34,211,197,.5); transform:translateY(-2px); }
  .nav-toggle{
    display:none; width:38px; height:38px; place-items:center; border-radius:12px;
    background:var(--glass); border:1px solid var(--glass-border); color:var(--text-1); cursor:pointer;
    transition:border-color var(--dur) var(--ease), color var(--dur) var(--ease);
  }
  .nav-toggle:hover{ border-color:rgba(34,211,197,.55); color:var(--brand-hi); }
  .command-search--drawer{ display:none; }
  .drawer-cta{ display:none; }

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    height:44px; padding:0 20px; border-radius:var(--r-btn); border:1px solid transparent;
    font-size:14.5px; font-weight:600; cursor:pointer; white-space:nowrap;
    transition:transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
               background var(--dur) var(--ease), border-color var(--dur) var(--ease), filter var(--dur) var(--ease);
  }
  .btn-sm{ height:38px; padding:0 16px; font-size:14px; }
  .btn-primary{
    background:linear-gradient(135deg, var(--brand), #12a99e);
    color:#04120F; box-shadow:var(--sh-glow);
    animation:breath 3.5s ease-in-out infinite;
  }
  .btn-primary:hover{ transform:translateY(-2px); box-shadow:0 16px 38px -12px rgba(34,211,197,.85); }
  .btn-primary:active{ transform:translateY(0); filter:brightness(.94); }
  .btn-ghost{
    background:var(--glass); border-color:var(--glass-border); color:var(--text-1);
    -webkit-backdrop-filter:blur(14px); backdrop-filter:blur(14px);
  }
  .btn-ghost:hover{
    border-color:rgba(34,211,197,.6); background:rgba(34,211,197,.08);
    transform:translateY(-2px); box-shadow:0 14px 32px -16px rgba(34,211,197,.7);
  }
  .btn-ghost:active{ transform:translateY(-1px); filter:brightness(.94); }
  .btn-block{ width:100%; }
  .btn-link{
    display:inline-flex; align-items:center; gap:8px; font-size:14px; font-weight:600;
    color:var(--brand-hi); transition:color var(--dur) var(--ease);
  }
  .btn-link i{ transition:transform var(--dur) var(--ease); }
  .btn-link:hover{ color:#fff; }
  .btn-link:hover i{ transform:translateX(4px); }

  @keyframes breath{
    0%,100%{ opacity:1; }
    50%{ opacity:.88; }
  }

  /* ---------- page hero ---------- */
  .page-hero{
    position:relative; overflow:hidden; display:flex; align-items:center;
    min-height:340px; padding:48px 0 52px; background:var(--bg-1);
    border-bottom:1px solid var(--line);
  }
  .hero-bg{
    position:absolute; inset:0; z-index:0;
    background-image:linear-gradient(100deg, rgba(5,8,15,.95) 0%, rgba(5,8,15,.78) 52%, rgba(5,8,15,.92) 100%),
                     url('/assets/images/backpic/back-2.png');
    background-size:cover; background-position:center;
  }
  .page-hero::before{
    content:""; position:absolute; inset:0; z-index:1; pointer-events:none;
    background-image:linear-gradient(rgba(120,190,255,.07) 1px, transparent 1px),
                     linear-gradient(90deg, rgba(120,190,255,.07) 1px, transparent 1px);
    background-size:48px 48px;
    -webkit-mask-image:radial-gradient(circle at 26% 44%, #000 0%, transparent 72%);
    mask-image:radial-gradient(circle at 26% 44%, #000 0%, transparent 72%);
  }
  .hero-inner{ position:relative; z-index:2; width:100%; }
  .breadcrumb{ display:flex; flex-wrap:wrap; align-items:center; gap:8px; font-size:13px; color:var(--text-3); margin-bottom:16px; }
  .breadcrumb a{ color:var(--text-3); transition:color var(--dur) var(--ease); }
  .breadcrumb a:hover{ color:var(--brand-hi); }
  .breadcrumb .sep{ color:rgba(233,241,250,.28); }
  .breadcrumb .current{ color:var(--text-2); }
  .page-hero h1{
    margin:0 0 14px; max-width:820px;
    font-size:clamp(28px, 4vw, 44px); line-height:1.25; letter-spacing:-.01em;
  }
  .hero-sub{ margin:0 0 24px; max-width:620px; color:var(--text-2); font-size:16px; }
  .hero-actions{ display:flex; flex-wrap:wrap; gap:12px; }

  /* ---------- sections ---------- */
  .section{ padding:64px 0; }
  @media (min-width:1024px){ .section{ padding:88px 0; } }
  .section-alt{
    background:var(--bg-1);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .section-head{ max-width:760px; margin-bottom:34px; }
  .section-head h2{
    position:relative; margin:0 0 12px; padding-left:16px;
    font-size:clamp(22px, 2.6vw, 32px);
  }
  .section-head h2::before{
    content:""; position:absolute; left:0; top:.16em; bottom:.16em; width:4px; border-radius:2px;
    background:linear-gradient(180deg, var(--accent), rgba(217,162,68,.12));
  }
  .section-head p{ margin:0; color:var(--text-2); font-size:15.5px; }
  .section-head .eyebrow{
    display:inline-flex; align-items:center; gap:8px; margin-bottom:10px;
    font-size:12.5px; letter-spacing:.08em; color:var(--accent); font-variant-numeric:tabular-nums;
  }

  /* ---------- field cards ---------- */
  .field-grid{ display:grid; gap:22px; grid-template-columns:1fr; }
  @media (min-width:640px){ .field-grid{ grid-template-columns:repeat(2,1fr); } }
  @media (min-width:1024px){ .field-grid{ grid-template-columns:repeat(3,1fr); } }
  .field-card{
    display:flex; flex-direction:column; overflow:hidden;
    background:var(--glass); border:1px solid var(--glass-border); border-radius:var(--r-card);
    -webkit-backdrop-filter:blur(14px); backdrop-filter:blur(14px);
    box-shadow:var(--sh-1);
    transition:transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
  }
  .field-card:hover{
    transform:translateY(-4px);
    box-shadow:var(--sh-2);
    border-color:rgba(34,211,197,.38);
  }
  .field-media{ aspect-ratio:3/2; overflow:hidden; background:var(--bg-2); }
  @media (min-width:640px){ .field-media{ aspect-ratio:16/9; } }
  .field-media img{
    width:100%; height:100%; object-fit:cover;
    transition:transform 420ms var(--ease);
  }
  .field-card:hover .field-media img{ transform:scale(1.045); }
  .field-body{ display:flex; flex-direction:column; gap:10px; padding:20px 22px 22px; }
  .field-body h3{ margin:0; font-size:18px; }
  .field-body p{ margin:0; color:var(--text-2); font-size:14.5px; line-height:1.8; }
  .tag-row{ display:flex; flex-wrap:wrap; gap:8px; margin:4px 0 0; padding:0; list-style:none; }
  .tag-row li{
    display:inline-flex; align-items:center; height:26px; padding:0 10px; border-radius:var(--r-pill);
    font-size:12px; line-height:1;
    background:rgba(217,162,68,.1); border:1px solid rgba(217,162,68,.28); color:var(--accent);
    font-variant-numeric:tabular-nums;
  }
  .tag-row--brand li{ background:rgba(34,211,197,.09); border-color:rgba(34,211,197,.3); color:var(--brand-hi); }

  /* ---------- compare ---------- */
  .compare-wrap{
    display:grid; grid-template-columns:1fr; overflow:hidden;
    background:var(--glass); border:1px solid var(--glass-border); border-radius:var(--r-panel);
    -webkit-backdrop-filter:blur(14px); backdrop-filter:blur(14px);
    box-shadow:var(--sh-1);
  }
  @media (min-width:900px){ .compare-wrap{ grid-template-columns:1fr 1px 1fr; } }
  .compare-col{ padding:26px 22px; }
  @media (min-width:768px){ .compare-col{ padding:32px 30px; } }
  .compare-col h3{ margin:0 0 6px; font-size:19px; }
  .compare-note{ margin:0 0 18px; color:var(--text-3); font-size:13px; }
  .compare-list{ display:flex; flex-direction:column; margin:0; padding:0; list-style:none; }
  .compare-list li{
    display:flex; align-items:baseline; justify-content:space-between; gap:14px;
    padding:12px 0; border-top:1px dashed var(--line); font-size:14.5px;
  }
  .compare-list li:first-child{ border-top:0; }
  .compare-list .dim{ color:var(--text-3); flex:0 0 auto; }
  .compare-list .val{ color:var(--text-1); text-align:right; font-variant-numeric:tabular-nums; }
  .compare-col--hi .val{ color:var(--brand-hi); }
  .compare-divider{
    background:linear-gradient(90deg, transparent, rgba(34,211,197,.75), transparent);
    height:1px; width:100%;
  }
  @media (min-width:900px){
    .compare-divider{ background:linear-gradient(180deg, transparent, rgba(34,211,197,.75), transparent); height:auto; width:1px; }
  }
  .compare-foot{
    margin:20px 0 0; padding-top:16px; border-top:1px solid var(--line);
    color:var(--text-3); font-size:13px;
  }

  /* ---------- parameter band ---------- */
  .band{
    display:grid; gap:20px; grid-template-columns:1fr; padding:26px 22px;
    border-radius:var(--r-panel); border:1px solid rgba(34,211,197,.22);
    background:linear-gradient(180deg, rgba(34,211,197,.09), rgba(255,255,255,.025));
    box-shadow:var(--sh-1);
  }
  @media (min-width:640px){ .band{ grid-template-columns:repeat(2,1fr); padding:30px 28px; } }
  @media (min-width:1024px){ .band{ grid-template-columns:repeat(4,1fr); } }
  .band-item{ display:flex; flex-direction:column; gap:6px; }
  .band-num{
    font-family:"Inter","Noto Sans SC",system-ui,sans-serif;
    font-size:clamp(28px, 3.4vw, 40px); font-weight:700; line-height:1.1; letter-spacing:-.02em;
    color:var(--accent); font-variant-numeric:tabular-nums;
  }
  .band-label{ font-size:14px; color:var(--text-2); }
  .band-note{ margin:18px 0 0; color:var(--text-3); font-size:13px; }

  /* ---------- faq ---------- */
  .faq-list{ display:flex; flex-direction:column; gap:12px; max-width:900px; }
  .faq-item{
    background:var(--glass); border:1px solid var(--glass-border); border-radius:14px;
    -webkit-backdrop-filter:blur(14px); backdrop-filter:blur(14px);
    transition:border-color var(--dur) var(--ease), background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  }
  .faq-item:hover{ border-color:rgba(34,211,197,.3); }
  .faq-item[open]{ border-color:rgba(34,211,197,.4); box-shadow:0 12px 30px -18px rgba(34,211,197,.7); background:rgba(255,255,255,.07); }
  .faq-item summary{
    display:flex; align-items:center; justify-content:space-between; gap:16px;
    padding:18px 22px; font-size:16px; font-weight:600; cursor:pointer; list-style:none;
  }
  .faq-item summary::-webkit-details-marker{ display:none; }
  .faq-icon{ position:relative; flex:0 0 16px; width:16px; height:16px; }
  .faq-icon::before,
  .faq-icon::after{
    content:""; position:absolute; left:0; top:50%; width:16px; height:2px; border-radius:2px;
    background:var(--brand); transform-origin:center;
    transition:transform 200ms var(--ease), background var(--dur) var(--ease);
  }
  .faq-icon::after{ transform:rotate(90deg); }
  .faq-item[open] .faq-icon::after{ transform:rotate(0deg); }
  .faq-body{
    margin:0 22px 20px 22px; padding:2px 0 2px 16px;
    border-left:2px solid rgba(34,211,197,.5);
    overflow:hidden;
  }
  .faq-body p{ margin:0; color:var(--text-2); font-size:15px; }

  /* ---------- cta / form ---------- */
  .cta-panel{
    position:relative; overflow:hidden; display:grid; gap:30px; grid-template-columns:1fr;
    padding:30px 22px; border-radius:var(--r-panel);
    background:var(--glass); border:1px solid var(--glass-border);
    -webkit-backdrop-filter:blur(14px); backdrop-filter:blur(14px);
    box-shadow:var(--sh-1);
  }
  .cta-panel::before{
    content:""; position:absolute; left:0; right:0; top:0; height:1px;
    background:linear-gradient(90deg, transparent, rgba(34,211,197,.85), transparent);
  }
  @media (min-width:900px){ .cta-panel{ grid-template-columns:1fr 1fr; gap:48px; padding:40px; } }
  .cta-copy h2{ margin:0 0 12px; font-size:clamp(22px, 2.4vw, 28px); }
  .cta-copy p{ margin:0 0 18px; color:var(--text-2); font-size:15px; }
  .cta-points{ display:flex; flex-direction:column; gap:10px; margin:0; padding:0; list-style:none; }
  .cta-points li{ position:relative; padding-left:20px; color:var(--text-2); font-size:14.5px; }
  .cta-points li::before{
    content:""; position:absolute; left:0; top:.62em; width:8px; height:8px; border-radius:2px;
    background:linear-gradient(135deg, var(--brand), var(--brand-hi));
  }
  .cta-form{ display:flex; flex-direction:column; gap:14px; }
  .form-field{ display:flex; flex-direction:column; gap:6px; }
  .form-field label{ font-size:13px; color:var(--text-2); }
  .form-field input,
  .form-field textarea{
    width:100%; padding:11px 14px; border-radius:var(--r-btn);
    background:rgba(255,255,255,.045); border:1px solid var(--line); color:var(--text-1);
    font-size:14.5px; outline:none;
    transition:border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
  }
  .form-field input::placeholder,
  .form-field textarea::placeholder{ color:rgba(233,241,250,.32); }
  .form-field textarea{ min-height:98px; resize:vertical; line-height:1.7; }
  .form-field input:focus,
  .form-field textarea:focus{
    border-color:rgba(34,211,197,.7);
    box-shadow:0 0 0 3px rgba(34,211,197,.14);
    background:rgba(255,255,255,.07);
  }
  .form-note{ margin:0; font-size:12.5px; color:var(--text-3); line-height:1.7; }
  .form-ok{
    margin:0; padding:12px 16px; border-radius:var(--r-btn); font-size:14px;
    border:1px solid rgba(34,211,197,.5); background:rgba(34,211,197,.1); color:var(--brand-hi);
  }

  /* ---------- footer ---------- */
  .site-footer{ position:relative; background:var(--bg-1); border-top:1px solid var(--line); }
  .site-footer::before{
    content:""; position:absolute; left:0; right:0; top:0; height:1px;
    background:linear-gradient(90deg, transparent, rgba(34,211,197,.55), transparent);
  }
  .footer-grid{ display:grid; gap:30px; grid-template-columns:1fr; padding:52px 0 34px; }
  @media (min-width:640px){ .footer-grid{ grid-template-columns:repeat(2,1fr); } }
  @media (min-width:1024px){ .footer-grid{ grid-template-columns:1.7fr 1fr 1fr 1.1fr; gap:36px; } }
  .footer-brand p{ margin:14px 0 0; max-width:360px; color:var(--text-2); font-size:14px; line-height:1.8; }
  .footer-col h4{ margin:0 0 14px; font-size:14px; letter-spacing:.06em; color:var(--text-1); }
  .footer-col ul{ display:flex; flex-direction:column; gap:10px; margin:0; padding:0; list-style:none; }
  .footer-col a{ font-size:14px; color:var(--text-2); transition:color var(--dur) var(--ease); }
  .footer-col a:hover{ color:var(--brand-hi); }
  .footer-col p{ margin:0 0 10px; color:var(--text-2); font-size:14px; line-height:1.8; }
  .footer-bottom{
    display:flex; flex-wrap:wrap; gap:12px; align-items:center; justify-content:space-between;
    padding:18px 0 28px; border-top:1px solid var(--line);
    font-size:12.5px; color:var(--text-3);
  }
  .footer-bottom .links{ display:flex; flex-wrap:wrap; gap:14px; }
  .footer-bottom .links a{ color:var(--text-3); transition:color var(--dur) var(--ease); }
  .footer-bottom .links a:hover{ color:var(--brand-hi); }

  /* ---------- responsive nav ---------- */
  @media (max-width:1023px){
    .nav-toggle{ display:grid; }
    .command-search{ display:none; }
    .nav-links{
      position:fixed; top:56px; left:0; right:0; bottom:0;
      flex-direction:column; align-items:stretch; gap:6px; margin:0;
      padding:20px; overflow-y:auto;
      background:rgba(5,8,15,.97);
      -webkit-backdrop-filter:blur(18px); backdrop-filter:blur(18px);
      border-top:1px solid var(--line);
      opacity:0; transform:translateY(-8px); pointer-events:none;
      transition:opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
    }
    .site-header.nav-open .nav-links{ opacity:1; transform:none; pointer-events:auto; }
    .command-search--drawer{ display:flex; width:100%; margin-bottom:10px; }
    .nav-link{ padding:14px 14px; font-size:16px; border-radius:12px; border:1px solid transparent; }
    .nav-link::after{ display:none; }
    .nav-link.is-active{ background:rgba(34,211,197,.08); border-color:rgba(34,211,197,.35); }
    .drawer-cta{ display:inline-flex; margin-top:14px; }
  }
  @media (max-width:639px){
    .hero-actions .btn{ width:100%; }
    .btn-block-sm{ width:100%; }
  }

/* roulang page: category3 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A101C;
  --bg-2:#0F1728;
  --glass:rgba(255,255,255,0.055);
  --glass-strong:rgba(255,255,255,0.085);
  --line:rgba(120,190,255,0.16);
  --div:rgba(255,255,255,0.08);
  --brand:#22D3C5;
  --brand-hi:#7CE8FF;
  --accent:#D9A244;
  --text-1:#E9F1FA;
  --text-2:rgba(233,241,250,0.70);
  --text-3:rgba(233,241,250,0.45);
  --danger-bg:rgba(255,122,107,0.16);
  --danger-tx:#FF9A8C;
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --shadow-rest:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 16px 40px rgba(0,0,0,.45), 0 0 0 1px rgba(34,211,197,.35);
  --shadow-glow:0 10px 32px -10px rgba(34,211,197,.6);
  --ease:cubic-bezier(.4,0,.2,1);
  --t:200ms var(--ease);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(700px 420px at 12% -6%, rgba(34,211,197,.13), transparent 62%),
    radial-gradient(620px 400px at 92% 4%, rgba(217,162,68,.08), transparent 66%);
  z-index:0;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color var(--t),border-color var(--t),background-color var(--t),opacity var(--t)}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{color:var(--text-1);line-height:1.25;letter-spacing:-0.01em;font-weight:700;margin:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(34,211,197,.28);color:#fff}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
@media (min-width:1440px){.container{max-width:1280px}}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(5,8,15,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--div);
  transition:background-color var(--t),box-shadow var(--t);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,197,.55),transparent);
  opacity:.55;pointer-events:none;
}
.site-header.is-scrolled{background:rgba(5,8,15,.94);box-shadow:0 10px 30px rgba(0,0,0,.45)}
.nav-inner{display:flex;align-items:center;gap:22px;height:64px;transition:height var(--t)}
.site-header.is-scrolled .nav-inner{height:56px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(34,211,197,.24),rgba(217,162,68,.16));
  border:1px solid rgba(34,211,197,.38);
  color:var(--brand-hi);font-size:15px;
  box-shadow:0 6px 18px -8px rgba(34,211,197,.7);
}
.brand-text{font-size:17px;font-weight:700;color:var(--text-1);letter-spacing:-0.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-link{
  position:relative;padding:8px 12px;border-radius:10px;
  font-size:14.5px;color:var(--text-2);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,transparent,var(--brand),transparent);
  transition:width var(--t);
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.04)}
.nav-link:hover::after{width:72%}
.nav-link.is-active{color:#fff}
.nav-link.is-active::after{width:72%}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:12px}
.command-search{
  display:flex;align-items:center;gap:8px;
  width:240px;height:38px;padding:0 12px;
  border-radius:999px;background:var(--glass);border:1px solid var(--line);
  transition:border-color var(--t),box-shadow var(--t),background-color var(--t);
}
.command-search i{font-size:13px;color:var(--text-3)}
.command-search input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;
  font-size:13.5px;color:var(--text-1);
}
.command-search input::placeholder{color:var(--text-3)}
.command-search kbd{
  font-size:11px;color:var(--text-3);border:1px solid var(--div);
  border-radius:6px;padding:2px 6px;white-space:nowrap;background:rgba(255,255,255,.03);
}
.command-search:focus-within{border-color:rgba(34,211,197,.6);box-shadow:0 0 0 3px rgba(34,211,197,.14)}
.icon-btn{
  width:36px;height:36px;border-radius:999px;display:grid;place-items:center;
  background:var(--glass);border:1px solid var(--line);color:var(--text-2);font-size:14px;
}
.icon-btn:hover{color:var(--brand-hi);border-color:rgba(34,211,197,.5);transform:translateY(-2px)}
.nav-toggle{
  display:none;width:38px;height:38px;border-radius:10px;cursor:pointer;
  background:var(--glass);border:1px solid var(--line);color:var(--text-1);
}
.nav-toggle:hover{border-color:rgba(34,211,197,.5)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);border:1px solid transparent;cursor:pointer;
  font-size:15px;font-weight:600;padding:12px 20px;line-height:1.2;
  transition:transform var(--t),box-shadow var(--t),background-color var(--t),border-color var(--t),color var(--t),opacity var(--t);
}
.btn:active{transform:translateY(1px);filter:brightness(.94)}
.btn-primary{
  background:linear-gradient(135deg,var(--brand-hi),var(--brand));
  color:#03191c;box-shadow:var(--shadow-glow);
  animation:breathe 3.5s ease-in-out infinite;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 38px -10px rgba(34,211,197,.75)}
.btn-ghost{background:transparent;border-color:rgba(34,211,197,.45);color:var(--brand-hi)}
.btn-ghost:hover{background:rgba(34,211,197,.08);transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:10px}
.btn-link{
  display:inline-flex;align-items:center;gap:8px;color:var(--brand-hi);font-size:14.5px;font-weight:600;
}
.btn-link i{transition:transform var(--t)}
.btn-link:hover i{transform:translateX(4px)}
@keyframes breathe{
  0%,100%{box-shadow:0 10px 32px -10px rgba(34,211,197,.6)}
  50%{box-shadow:0 10px 32px -10px rgba(34,211,197,.84)}
}

/* ---------- 通用区块 ---------- */
.section{padding:88px 0;position:relative}
.section--tight{padding:64px 0}
.section--alt{background:var(--bg-1);border-top:1px solid var(--div);border-bottom:1px solid var(--div)}
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent);font-weight:700;margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:linear-gradient(90deg,var(--accent),transparent)}
.section-title{font-size:clamp(22px,2.6vw,32px);margin-bottom:14px}
.section-title .bar{
  display:inline-block;width:3px;height:.92em;background:var(--accent);
  border-radius:2px;margin-right:12px;vertical-align:-0.08em;
}
.section-desc{font-size:16px;color:var(--text-2);max-width:680px}
.divider-glow{height:1px;width:40%;max-width:420px;background:linear-gradient(90deg,var(--brand),transparent);border:0;margin:0}

/* ---------- 分类 Hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  padding:64px 0 52px;
  min-height:352px;
  border-bottom:1px solid var(--div);
  background-image:
    linear-gradient(100deg,rgba(5,8,15,.94) 8%,rgba(5,8,15,.72) 52%,rgba(5,8,15,.9) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(120,190,255,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,190,255,.07) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(600px 320px at 22% 40%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(600px 320px at 22% 40%,#000,transparent 78%);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:20px}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--brand-hi)}
.breadcrumb .sep{opacity:.5}
.breadcrumb [aria-current]{color:var(--text-2)}
.cat-hero h1{font-size:clamp(30px,4.2vw,46px);max-width:820px}
.cat-hero .lede{margin-top:16px;font-size:17px;color:var(--text-2);max-width:640px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.badge{
  display:inline-flex;align-items:center;gap:7px;
  height:28px;padding:0 13px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);
  font-size:12.5px;color:var(--text-2);letter-spacing:.02em;
}
.badge--gold{border-color:rgba(217,162,68,.42);color:#EBC176}
.badge--brand{border-color:rgba(34,211,197,.42);color:var(--brand-hi)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}

/* ---------- 时间线 ---------- */
.flow{position:relative;display:grid;grid-template-columns:1fr;gap:18px;margin-top:8px}
.flow::before{display:none}
.flow-step{
  position:relative;padding:58px 22px 24px;
  background:var(--glass);border:1px solid var(--div);border-radius:var(--r-card);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-rest);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t),background-color var(--t);
}
.flow-step:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(34,211,197,.42);background:var(--glass-strong)}
.flow-node{
  position:absolute;top:14px;left:22px;width:34px;height:34px;border-radius:50%;
  display:grid;place-items:center;font-size:13px;font-weight:700;color:#04121a;
  background:linear-gradient(135deg,var(--brand-hi),var(--brand));
  box-shadow:0 0 0 6px rgba(34,211,197,.10),0 8px 20px -10px rgba(34,211,197,.9);
  font-variant-numeric:tabular-nums;
}
.flow-step h3{font-size:19px;margin-bottom:10px}
.flow-step p{font-size:15px;color:var(--text-2);min-height:auto}
.flow-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.flow-tags span{
  font-size:12px;color:var(--text-3);padding:4px 10px;border-radius:999px;
  border:1px solid var(--div);background:rgba(255,255,255,.03);
}
.flow-step:hover .flow-tags span{border-color:rgba(120,190,255,.22);color:var(--text-2)}
@media (min-width:1024px){
  .flow{grid-template-columns:repeat(5,1fr);gap:18px}
  .flow::before{
    display:block;content:"";position:absolute;left:5%;right:5%;top:31px;height:2px;
    background:linear-gradient(90deg,transparent,rgba(34,211,197,.75),rgba(34,211,197,.45),rgba(34,211,197,.75),transparent);
    opacity:.6;
  }
  .flow-step{padding:58px 20px 24px}
}

/* ---------- 参数带 ---------- */
.metrics-band{
  display:grid;grid-template-columns:1fr;gap:0;
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);border-radius:var(--r-panel);
  overflow:hidden;backdrop-filter:blur(14px);
  box-shadow:var(--shadow-rest);
}
.metric{padding:28px 26px;border-bottom:1px solid var(--div)}
.metric:last-child{border-bottom:0}
.metric .val{
  font-size:clamp(30px,4vw,42px);font-weight:700;letter-spacing:-0.02em;
  background:linear-gradient(120deg,#F2DDB0,var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  font-variant-numeric:tabular-nums;line-height:1.1;
}
.metric .val small{font-size:15px;margin-left:4px;color:var(--text-3);-webkit-text-fill-color:var(--text-3)}
.metric .label{margin-top:10px;font-size:14.5px;color:var(--text-1);font-weight:600}
.metric .note{margin-top:6px;font-size:13.5px;color:var(--text-3)}
@media (min-width:640px){.metrics-band{grid-template-columns:repeat(2,1fr)}.metric{border-right:1px solid var(--div)}.metric:nth-child(2n){border-right:0}}
@media (min-width:1024px){.metrics-band{grid-template-columns:repeat(4,1fr)}.metric{border-bottom:0;border-right:1px solid var(--div)}.metric:nth-child(2n){border-right:1px solid var(--div)}.metric:last-child{border-right:0}}

/* ---------- 交付文件区块 ---------- */
.deliver-grid{display:grid;grid-template-columns:1fr;gap:24px;align-items:start}
@media (min-width:1024px){.deliver-grid{grid-template-columns:5fr 7fr;gap:32px}}
.figure-card{
  border-radius:var(--r-panel);overflow:hidden;border:1px solid var(--div);
  background:var(--bg-2);box-shadow:var(--shadow-rest);position:relative;
}
.figure-card img{width:100%;aspect-ratio:16/9;object-fit:cover;opacity:.85}
.figure-card .caption{
  position:absolute;left:0;right:0;bottom:0;padding:24px 22px 20px;
  background:linear-gradient(180deg,transparent,rgba(5,8,15,.92));
  font-size:14px;color:var(--text-2);
}
.doc-list{display:grid;gap:14px}
.doc-item{
  display:flex;gap:16px;padding:20px 22px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--div);box-shadow:var(--shadow-rest);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t),background-color var(--t);
}
.doc-item:hover{transform:translateY(-3px);border-color:rgba(34,211,197,.42);box-shadow:var(--shadow-hover);background:var(--glass-strong)}
.doc-item .ico{
  flex:0 0 auto;width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:rgba(34,211,197,.10);border:1px solid rgba(34,211,197,.32);color:var(--brand-hi);font-size:15px;
}
.doc-item h3{font-size:17px;margin-bottom:6px}
.doc-item p{font-size:14.5px;color:var(--text-2)}
.doc-item .meta{margin-top:10px;font-size:12.5px;color:var(--accent);font-variant-numeric:tabular-nums}

/* ---------- 能力参数小卡 ---------- */
.spec-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:640px){.spec-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.spec-grid{grid-template-columns:repeat(4,1fr)}}
.spec-card{
  padding:24px 22px;border-radius:var(--r-card);
  background:var(--bg-2);border:1px solid var(--div);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.spec-card:hover{transform:translateY(-4px);border-color:rgba(34,211,197,.4);box-shadow:var(--shadow-hover)}
.spec-card .k{font-size:12.5px;letter-spacing:.1em;color:var(--accent);font-weight:700;text-transform:uppercase;font-variant-numeric:tabular-nums}
.spec-card h3{font-size:18px;margin:12px 0 8px}
.spec-card p{font-size:14.5px;color:var(--text-2)}
.spec-card ul{margin-top:12px;display:grid;gap:7px}
.spec-card ul li{font-size:13.5px;color:var(--text-3);display:flex;gap:8px;align-items:flex-start}
.spec-card ul li::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--brand);margin-top:9px;flex:0 0 auto}

/* ---------- 变更与加急 ---------- */
.change-grid{display:grid;grid-template-columns:1fr;gap:28px}
@media (min-width:1024px){.change-grid{grid-template-columns:4fr 8fr;gap:40px}}
.change-side{position:relative}
@media (min-width:1024px){.change-side{position:sticky;top:96px;align-self:start}}
.change-item{
  padding:24px 26px;border-radius:var(--r-card);background:var(--glass);
  border:1px solid var(--div);margin-bottom:16px;position:relative;
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.change-item::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),rgba(34,211,197,0));opacity:0;transition:opacity var(--t);
}
.change-item:hover{transform:translateY(-3px);border-color:rgba(34,211,197,.42);box-shadow:var(--shadow-hover)}
.change-item:hover::before{opacity:1}
.change-item h3{font-size:18px;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.change-item h3 span{font-size:12.5px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums}
.change-item p{font-size:15px;color:var(--text-2)}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;border-radius:var(--r-panel);
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);backdrop-filter:blur(14px);
  padding:40px;box-shadow:var(--shadow-rest);overflow:hidden;
}
.cta-panel::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--brand),transparent);opacity:.85;
}
.cta-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:1024px){.cta-grid{grid-template-columns:5fr 7fr;gap:44px;align-items:start}}
.cta-panel h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px}
.cta-list{margin-top:20px;display:grid;gap:10px}
.cta-list li{font-size:14.5px;color:var(--text-2);display:flex;gap:10px;align-items:flex-start}
.cta-list i{color:var(--brand);font-size:13px;margin-top:6px}
.form-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:640px){.form-grid{grid-template-columns:1fr 1fr}.form-grid .full{grid-column:1 / -1}}
.field label{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:8px}
.field input,.field textarea{
  width:100%;background:var(--glass);border:1px solid var(--line);
  border-radius:12px;padding:12px 14px;font-size:15px;color:var(--text-1);
  outline:none;transition:border-color var(--t),box-shadow var(--t),background-color var(--t);
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field textarea:focus{
  border-color:rgba(34,211,197,.7);box-shadow:0 0 0 3px rgba(34,211,197,.16);background:rgba(255,255,255,.07);
}
.form-note{margin-top:14px;font-size:12.5px;color:var(--text-3)}
.form-actions{margin-top:20px;display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:var(--bg-1);
  border-top:1px solid var(--div);padding:64px 0 0;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,197,.6),transparent);
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px;padding-bottom:48px}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-3);max-width:320px}
.footer-col h4{
  font-size:14px;color:var(--text-1);letter-spacing:.08em;
  text-transform:uppercase;margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px}
.footer-col li a,.footer-col p{font-size:14px;color:var(--text-3);line-height:1.6}
.footer-col li a:hover{color:var(--brand-hi)}
.footer-col p + p{margin-top:10px}
.footer-bottom{
  border-top:1px solid var(--div);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;align-items:center;
  font-size:12.5px;color:var(--text-3);
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:16px}
.footer-bottom .links a:hover{color:var(--brand-hi)}

/* ---------- 移动端导航抽屉 ---------- */
@media (max-width:1023px){
  .nav-toggle{display:grid;place-items:center}
  .command-search{display:none}
  .nav-links{
    position:fixed;left:0;right:0;top:56px;bottom:0;
    flex-direction:column;align-items:stretch;gap:6px;
    padding:20px 20px 40px;margin:0;
    background:rgba(5,8,15,.97);
    backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
    transform:translateY(-10px);opacity:0;pointer-events:none;
    transition:opacity var(--t),transform var(--t);
    overflow-y:auto;border-top:1px solid var(--div);
  }
  body.nav-open .nav-links{opacity:1;transform:none;pointer-events:auto}
  .nav-link{padding:14px 16px;font-size:16px;border:1px solid var(--div);border-radius:12px}
  .nav-link::after{display:none}
  .nav-link.is-active{border-color:rgba(34,211,197,.5);background:rgba(34,211,197,.08)}
}
@media (max-width:639px){
  .container{padding:0 20px}
  .nav-tools .btn-primary{display:none}
  .section{padding:60px 0}
  .cat-hero{padding:44px 0 40px;min-height:300px}
  .hero-actions .btn{width:100%}
  .cta-panel{padding:26px 20px}
  .cta-panel .btn-primary{width:100%}
}

/* roulang page: category4 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A101C;
  --bg-2:#0F1728;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.085);
  --line:rgba(255,255,255,.08);
  --line-soft:rgba(120,190,255,.16);
  --brand:#22D3C5;
  --brand-hi:#7CE8FF;
  --accent:#D9A244;
  --text-1:#E9F1FA;
  --text-2:rgba(233,241,250,.70);
  --text-3:rgba(233,241,250,.45);
  --danger-bg:rgba(255,122,107,.16);
  --danger-fg:#FF9A8C;
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --sh-rest:0 8px 24px rgba(0,0,0,.35);
  --sh-hover:0 16px 40px rgba(0,0,0,.45), 0 0 0 1px rgba(34,211,197,.35);
  --sh-glow:0 10px 32px -10px rgba(34,211,197,.6);
  --ease:cubic-bezier(.4,0,.2,1);
  --t:200ms;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:'Noto Sans SC','HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(900px 520px at 12% -8%, rgba(34,211,197,.12), transparent 62%),
    radial-gradient(760px 460px at 88% 6%, rgba(217,162,68,.08), transparent 60%);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
ul{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
::selection{background:rgba(34,211,197,.28);color:#fff}
*:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#070b14}
::-webkit-scrollbar-thumb{background:rgba(120,190,255,.18);border-radius:99px}
::-webkit-scrollbar-thumb:hover{background:rgba(34,211,197,.45)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1}
@media(min-width:1440px){.container{max-width:1280px;padding:0 24px}}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,8,15,.62);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,197,.55),transparent);
  opacity:.7;
}
.site-header.is-scrolled{background:rgba(5,8,15,.92);box-shadow:0 10px 30px rgba(0,0,0,.45)}
.nav-inner{display:flex;align-items:center;gap:22px;height:64px;transition:height var(--t) var(--ease)}
.site-header.is-scrolled .nav-inner{height:56px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(34,211,197,.24),rgba(217,162,68,.16));
  border:1px solid rgba(34,211,197,.38);
  color:var(--brand-hi);font-size:15px;box-shadow:0 6px 18px -8px rgba(34,211,197,.7);
}
.brand-text{color:var(--text-1);font-weight:700;font-size:17px;letter-spacing:.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px;flex:1;min-width:0}
.nav-link{
  position:relative;padding:8px 12px;border-radius:10px;font-size:14.5px;
  color:var(--text-2);white-space:nowrap;transition:color var(--t) var(--ease),background var(--t) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-hi));
  transition:left var(--t) var(--ease),right var(--t) var(--ease);opacity:.9;
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.045)}
.nav-link:hover::after{left:12px;right:12px}
.nav-link.is-active{color:var(--text-1);background:rgba(34,211,197,.10)}
.nav-link.is-active::after{left:12px;right:12px}
.nav-tools{display:flex;align-items:center;gap:10px;flex:none}
.command-search{
  display:flex;align-items:center;gap:8px;width:240px;height:38px;padding:0 10px 0 12px;
  border-radius:999px;background:var(--glass);border:1px solid var(--line);
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease),background var(--t) var(--ease);
}
.command-search i{color:var(--text-3);font-size:13px}
.command-search input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;font-size:13.5px;color:var(--text-1);
}
.command-search input::placeholder{color:var(--text-3)}
.command-search kbd{
  font-size:11px;padding:2px 6px;border-radius:6px;color:var(--text-3);
  border:1px solid var(--line);background:rgba(255,255,255,.04);font-variant-numeric:tabular-nums;
}
.command-search:focus-within{border-color:rgba(34,211,197,.65);background:rgba(255,255,255,.08);box-shadow:0 0 0 3px rgba(34,211,197,.16)}
.icon-btn{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:var(--glass);border:1px solid var(--line);color:var(--text-2);
  transition:all var(--t) var(--ease);
}
.icon-btn:hover{color:var(--brand-hi);border-color:rgba(34,211,197,.5);transform:translateY(-2px)}
.nav-toggle{
  display:none;width:38px;height:38px;border-radius:11px;place-items:center;
  background:var(--glass);border:1px solid var(--line);color:var(--text-1);cursor:pointer;
  transition:all var(--t) var(--ease);
}
.nav-toggle:hover{border-color:rgba(34,211,197,.5);color:var(--brand-hi)}
@media(max-width:1023px){
  .nav-links{display:none}
  .command-search{display:none}
  .icon-btn{display:none}
  .nav-toggle{display:grid}
  .nav-inner{gap:12px}
}
@media(max-width:639px){
  .brand-text{font-size:15.5px}
  .site-header .btn.btn-primary.btn-sm{display:none}
}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:all var(--t) var(--ease);
}
.btn-sm{height:38px;padding:0 15px;font-size:14px}
.btn-primary{
  background:linear-gradient(120deg,var(--brand),var(--brand-hi));
  color:#04231F;box-shadow:var(--sh-glow);
  animation:breathe 3.5s var(--ease) infinite;
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 44px -12px rgba(34,211,197,.85)}
.btn-primary:active{transform:translateY(-2px);filter:brightness(.94)}
.btn-ghost{
  background:transparent;border-color:rgba(34,211,197,.42);color:var(--brand-hi);
}
.btn-ghost:hover{background:rgba(34,211,197,.08);transform:translateY(-3px);border-color:rgba(34,211,197,.75)}
.btn-ghost:active{transform:translateY(-2px);filter:brightness(.94)}
.btn-quiet{
  background:var(--glass);border-color:var(--line);color:var(--text-1);
}
.btn-quiet:hover{border-color:rgba(34,211,197,.5);transform:translateY(-3px);color:var(--brand-hi)}
.btn-block{width:100%}
.btn-link{
  display:inline-flex;align-items:center;gap:8px;color:var(--brand-hi);font-size:14px;font-weight:600;
}
.btn-link i{transition:transform var(--t) var(--ease)}
.btn-link:hover i{transform:translateX(4px)}
@keyframes breathe{
  0%,100%{box-shadow:0 10px 32px -10px rgba(34,211,197,.6)}
  50%{box-shadow:0 12px 38px -8px rgba(34,211,197,.78)}
}
@media(prefers-reduced-motion:reduce){.btn-primary{animation:none}}

/* ============ badges / tags ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 11px;border-radius:999px;
  font-size:12.5px;letter-spacing:.02em;background:var(--glass);border:1px solid var(--line);color:var(--text-2);
}
.badge-accent{border-color:rgba(217,162,68,.42);color:var(--accent)}
.badge-brand{border-color:rgba(34,211,197,.42);color:var(--brand-hi)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}

/* ============ hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:64px 0 56px;
  min-height:340px;
  background-image:linear-gradient(120deg,rgba(5,8,15,.94),rgba(5,8,15,.72)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(120,190,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(120,190,255,.06) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse at 50% 0%,#000 10%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse at 50% 0%,#000 10%,transparent 78%);
  pointer-events:none;
}
.hero-crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px;flex-wrap:wrap}
.hero-crumb a{color:var(--text-3)}
.hero-crumb a:hover{color:var(--brand-hi)}
.hero-crumb span{opacity:.6}
.hero-h1{font-size:clamp(30px,4.2vw,48px);max-width:900px}
.hero-sub{margin-top:14px;font-size:17px;color:var(--text-2);max-width:760px}
.hero-anchors{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.anchor-btn{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 15px;border-radius:999px;
  font-size:13.5px;color:var(--text-1);background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px);transition:all var(--t) var(--ease);
}
.anchor-btn i{color:var(--brand);font-size:12px}
.anchor-btn:hover{transform:translateY(-2px);border-color:rgba(34,211,197,.55);color:var(--brand-hi);box-shadow:0 10px 26px -14px rgba(34,211,197,.9)}

/* ============ sections ============ */
.section{padding:80px 0;position:relative}
.section-tight{padding:56px 0}
.section-dim{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:760px;margin-bottom:36px}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--accent);
  letter-spacing:.08em;margin-bottom:12px;font-variant-numeric:tabular-nums;
}
.sec-eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--accent),transparent)}
.sec-h2{font-size:clamp(22px,2.6vw,32px);position:relative;padding-left:16px}
.sec-h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--accent),rgba(217,162,68,.15));
}
.sec-desc{margin-top:14px;color:var(--text-2);font-size:16px}
.glow-line{
  height:1px;width:40%;max-width:420px;margin:0 auto;
  background:linear-gradient(90deg,var(--brand),transparent);
}
@media(max-width:639px){.section{padding:56px 0}.section-tight{padding:44px 0}}

/* ============ cards ============ */
.card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-rest);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.card-pad{padding:24px}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(34,211,197,.35)}
.card-static:hover{transform:none;box-shadow:var(--sh-rest);border-color:var(--line)}

/* support entry strip */
.entry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.entry-card{position:relative;overflow:hidden}
.entry-card .entry-ico{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-size:16px;
  background:rgba(34,211,197,.1);border:1px solid rgba(34,211,197,.3);color:var(--brand-hi);margin-bottom:14px;
}
.entry-card h3{font-size:18px;margin-bottom:8px}
.entry-card p{font-size:14.5px;color:var(--text-2)}
.entry-card .entry-meta{margin-top:14px;font-size:13px;color:var(--accent);font-variant-numeric:tabular-nums}
@media(max-width:1023px){.entry-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:639px){.entry-grid{grid-template-columns:1fr}}

/* ============ faq ============ */
.faq-layout{display:grid;grid-template-columns:8fr 4fr;gap:28px;align-items:start}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease),background var(--t) var(--ease);
}
.faq-item:hover{border-color:rgba(34,211,197,.35);box-shadow:0 10px 28px -18px rgba(34,211,197,.9)}
.faq-item[open]{border-color:rgba(34,211,197,.42);background:rgba(255,255,255,.07)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:14px;
  padding:18px 22px;color:var(--text-1);font-size:16.5px;font-weight:600;line-height:1.5;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .faq-idx{
  flex:none;font-size:13px;color:var(--accent);font-variant-numeric:tabular-nums;
  padding-top:3px;letter-spacing:.04em;
}
.faq-item summary .faq-q{flex:1}
.faq-item summary .faq-sign{
  flex:none;width:24px;height:24px;border-radius:8px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--brand-hi);font-size:11px;margin-top:2px;
  transition:transform 220ms var(--ease),border-color var(--t) var(--ease);
}
.faq-item[open] summary .faq-sign{transform:rotate(180deg);border-color:rgba(34,211,197,.55)}
.faq-body{
  padding:0 22px 20px 60px;border-top:1px solid var(--line);
  margin-top:0;padding-top:16px;position:relative;
}
.faq-body::before{
  content:"";position:absolute;left:22px;top:16px;bottom:20px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),rgba(34,211,197,.05));
}
.faq-body p{font-size:15.5px;color:var(--text-2);margin-bottom:12px}
.faq-body p:last-child{margin-bottom:0}
.faq-body ul{margin:0 0 12px;display:flex;flex-direction:column;gap:8px}
.faq-body li{position:relative;padding-left:18px;font-size:15px;color:var(--text-2)}
.faq-body li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;
  background:var(--brand);opacity:.85;
}

/* sticky contact card */
.side-card{position:sticky;top:88px;padding:26px}
.side-card h3{font-size:19px;margin-bottom:8px}
.side-card .side-note{font-size:14px;color:var(--text-3);margin-bottom:20px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:7px}
.field input,.field textarea,.field select{
  width:100%;padding:11px 13px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text-1);
  font-size:14.5px;outline:none;transition:all var(--t) var(--ease);
}
.field textarea{min-height:92px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field textarea:focus,.field select:focus{
  border-color:rgba(34,211,197,.7);background:rgba(34,211,197,.06);box-shadow:0 0 0 3px rgba(34,211,197,.15);
}
.form-note{margin-top:14px;font-size:12.5px;color:var(--text-3);line-height:1.7}
.side-channels{margin-top:22px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:12px}
.side-channels li{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--text-2)}
.side-channels i{color:var(--brand);margin-top:5px;font-size:12px}
@media(max-width:1023px){
  .faq-layout{grid-template-columns:1fr}
  .side-card{position:static}
}
@media(max-width:639px){
  .faq-item summary{padding:16px 16px;font-size:15.5px}
  .faq-body{padding:16px 16px 18px 34px}
  .faq-body::before{left:16px}
}

/* ============ docs ============ */
.doc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.doc-card{display:flex;flex-direction:column;gap:12px;padding:24px}
.doc-card .doc-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.doc-ico{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-size:16px;
  background:rgba(217,162,68,.12);border:1px solid rgba(217,162,68,.35);color:var(--accent);
}
.doc-card h3{font-size:18px}
.doc-card p{font-size:14.5px;color:var(--text-2)}
.doc-meta{display:flex;flex-wrap:wrap;gap:8px;font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums}
.doc-card .doc-foot{margin-top:auto;padding-top:6px}
@media(max-width:1023px){.doc-grid{grid-template-columns:1fr 1fr}}
@media(max-width:639px){.doc-grid{grid-template-columns:1fr}}

/* ============ sla band ============ */
.sla-band{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r-panel);overflow:hidden;
}
.sla-cell{background:var(--bg-2);padding:26px 24px}
.sla-cell .sla-num{
  font-size:clamp(28px,3.4vw,40px);font-weight:700;color:var(--text-1);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.1;
}
.sla-cell .sla-num em{font-style:normal;font-size:.5em;color:var(--accent);margin-left:4px}
.sla-cell .sla-label{margin-top:8px;font-size:13.5px;color:var(--text-3)}
.sla-cell .sla-desc{margin-top:10px;font-size:14px;color:var(--text-2)}
@media(max-width:1023px){.sla-band{grid-template-columns:1fr 1fr}}
@media(max-width:639px){.sla-band{grid-template-columns:1fr}}

/* ============ cta ============ */
.cta-panel{
  position:relative;border-radius:var(--r-panel);overflow:hidden;
  background:linear-gradient(140deg,rgba(34,211,197,.12),rgba(10,16,28,.9) 46%,rgba(217,162,68,.10));
  border:1px solid var(--line-soft);
  box-shadow:var(--sh-rest);
  padding:40px;
  display:grid;grid-template-columns:1.15fr .85fr;gap:34px;align-items:center;
}
.cta-panel::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,197,.9),transparent);
}
.cta-panel h2{font-size:clamp(22px,2.6vw,30px)}
.cta-panel p{margin-top:14px;font-size:15.5px;color:var(--text-2);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.cta-side{display:flex;flex-direction:column;gap:12px}
.cta-point{
  display:flex;gap:12px;align-items:flex-start;padding:14px 16px;border-radius:14px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);font-size:14px;color:var(--text-2);
}
.cta-point i{color:var(--brand);margin-top:5px;font-size:12px}
@media(max-width:1023px){.cta-panel{grid-template-columns:1fr;padding:30px 24px}}
@media(max-width:639px){.cta-actions .btn{width:100%}}

/* ============ footer ============ */
.site-footer{
  position:relative;background:var(--bg-1);border-top:1px solid var(--line);
  padding:56px 0 26px;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,197,.6),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-3);max-width:320px;line-height:1.8}
.footer-col h4{
  font-size:13px;letter-spacing:.14em;color:var(--text-3);font-weight:600;
  text-transform:uppercase;margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col li a{font-size:14px;color:var(--text-2);transition:color var(--t) var(--ease)}
.footer-col li a:hover{color:var(--brand-hi)}
.footer-col p{font-size:14px;color:var(--text-3);margin-bottom:10px;line-height:1.8}
.footer-bottom{
  margin-top:44px;padding-top:18px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:16px}
.footer-bottom .links a{color:var(--text-3)}
.footer-bottom .links a:hover{color:var(--brand-hi)}
@media(max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:639px){.footer-grid{grid-template-columns:1fr;gap:26px}.site-footer{padding:44px 0 22px}}

/* ============ mobile drawer ============ */
.drawer{
  position:fixed;inset:0;z-index:90;display:none;
  background:rgba(5,8,15,.9);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  padding:20px;
}
.drawer.is-open{display:block}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:44px}
.drawer-close{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:var(--glass);border:1px solid var(--line);color:var(--text-1);cursor:pointer;
}
.drawer-search{
  display:flex;align-items:center;gap:10px;margin-top:22px;height:46px;padding:0 14px;
  border-radius:999px;background:var(--glass);border:1px solid var(--line);
}
.drawer-search input{flex:1;background:transparent;border:0;outline:none;font-size:14.5px;color:var(--text-1)}
.drawer-search i{color:var(--text-3)}
.drawer-nav{margin-top:24px;display:flex;flex-direction:column;gap:6px}
.drawer-nav a{
  padding:14px 14px;border-radius:12px;font-size:16px;color:var(--text-1);
  background:var(--glass);border:1px solid var(--line);
}
.drawer-nav a.is-active{border-color:rgba(34,211,197,.5);color:var(--brand-hi);background:rgba(34,211,197,.1)}
.drawer-cta{margin-top:24px}

.scroll-hint{display:none;font-size:12.5px;color:var(--text-3);margin-top:10px}
@media(max-width:639px){.scroll-hint{display:block}}