/* roulang page: index */
:root{
  --bg-0:#04070F;
  --bg-1:#070D1C;
  --bg-2:#0B1428;
  --brand:#2D6BFF;
  --brand-deep:#1740C4;
  --brand-glow:rgba(45,107,255,.45);
  --accent:#35E0A1;
  --warn:#FFB020;
  --text-hi:#EAF0FF;
  --text-mid:#C3CFE6;
  --text-low:#8496B8;
  --stroke:rgba(255,255,255,.10);
  --stroke-strong:rgba(255,255,255,.18);
  --radius-card:18px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow-card:0 18px 48px -24px rgba(0,0,0,.85);
  --shadow-glow:0 0 0 1px rgba(45,107,255,.35),0 12px 40px -12px var(--brand-glow);
  --num-font:"DIN Alternate","Bebas Neue",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-mid);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--text-hi);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--accent);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--text-hi);margin:0;font-weight:700;letter-spacing:-0.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media(min-width:640px){.container{padding:0 32px;}}
@media(min-width:1024px){.container{padding:0 40px;}}
.section{padding:64px 0;scroll-margin-top:96px;}
@media(min-width:768px){.section{padding:88px 0;}}
@media(min-width:1024px){.section{padding:108px 0;}}
.section-alt{background:var(--bg-1);border-top:1px solid var(--stroke);border-bottom:1px solid var(--stroke);}
.eyebrow{
  font-size:12.5px;
  letter-spacing:.18em;
  color:var(--accent);
  text-transform:uppercase;
  margin-bottom:14px;
  font-weight:600;
  display:flex;
  align-items:center;
  gap:10px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--accent),transparent);}
.section-title{font-size:clamp(24px,3.2vw,38px);line-height:1.25;}
.section-sub{margin-top:14px;color:var(--text-low);font-size:15px;max-width:640px;}
.head-row{display:flex;flex-wrap:wrap;gap:20px;align-items:flex-end;justify-content:space-between;}
.num{font-family:var(--num-font);font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ---------- Header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  transition:background .3s ease,backdrop-filter .3s ease,border-color .3s ease,box-shadow .3s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(7,13,28,.86);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-bottom-color:var(--stroke);
  box-shadow:0 12px 36px -24px rgba(0,0,0,.9);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:72px;
}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo:hover{color:var(--text-hi);}
.logo-mark{
  width:36px;height:36px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand) 0%,#4E8CFF 55%,var(--accent) 160%);
  box-shadow:0 8px 24px -12px var(--brand-glow);
}
.logo-mark svg{width:19px;height:19px;}
.logo-text{font-size:17.5px;font-weight:700;color:var(--text-hi);letter-spacing:-0.01em;line-height:1;}
.logo-text em{font-style:normal;color:var(--accent);}
.nav-desktop{display:none;align-items:center;gap:6px;}
@media(min-width:1024px){.nav-desktop{display:flex;}}
.nav-desktop a{
  position:relative;
  padding:9px 14px;
  font-size:14.5px;
  color:var(--text-mid);
  border-radius:10px;
  white-space:nowrap;
}
.nav-desktop a:hover{color:var(--text-hi);background:rgba(255,255,255,.05);}
.nav-desktop a.active{color:var(--text-hi);}
.nav-desktop a.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
}
.header-right{display:flex;align-items:center;gap:10px;}
.status-badge{
  display:none;
  align-items:center;gap:7px;
  padding:6px 12px;
  border-radius:var(--radius-pill);
  background:rgba(53,224,161,.10);
  border:1px solid rgba(53,224,161,.28);
  color:var(--accent);
  font-size:12px;
  letter-spacing:.04em;
  white-space:nowrap;
}
@media(min-width:1024px){.status-badge{display:inline-flex;}}
.status-badge .dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 4px rgba(53,224,161,.16);
  animation:breathe 2.4s ease-in-out infinite;
}
@keyframes breathe{0%,100%{opacity:1;}50%{opacity:.35;}}
.countdown{
  display:none;
  align-items:center;gap:7px;
  font-size:12px;
  color:var(--text-low);
  white-space:nowrap;
}
@media(min-width:1200px){.countdown{display:inline-flex;}}
.countdown b{color:var(--warn);font-family:var(--num-font);font-variant-numeric:tabular-nums;font-size:14px;font-weight:700;}
.countdown b i{opacity:.4;font-style:normal;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  border-radius:var(--radius-btn);
  font-size:14.5px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .22s ease,box-shadow .28s ease,background .22s ease,border-color .22s ease,color .22s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn-primary{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 0%,#4E8CFF 135%);
  color:#fff;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(45,107,255,.5),0 18px 48px -12px var(--brand-glow);
}
.btn-ghost{
  background:rgba(255,255,255,.03);
  border-color:var(--stroke-strong);
  color:var(--text-hi);
}
.btn-ghost:hover{
  background:rgba(255,255,255,.07);
  border-color:var(--accent);
  color:var(--text-hi);
  transform:translateY(-1px);
}
.btn-text{
  height:auto;padding:0;border:0;background:none;color:var(--text-hi);font-weight:600;
}
.btn-text:hover{color:var(--accent);}
.btn-text .arrow{transition:transform .22s ease;}
.btn-text:hover .arrow{transform:translateX(3px);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn-lg{height:52px;padding:0 26px;font-size:15.5px;}

/* ---------- Pills ---------- */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;
  border-radius:var(--radius-pill);
  font-size:12px;
  letter-spacing:.04em;
  line-height:1.6;
  white-space:nowrap;
}
.pill-accent{background:rgba(53,224,161,.12);border:1px solid rgba(53,224,161,.3);color:var(--accent);}
.pill-warn{background:rgba(255,176,32,.12);border:1px solid rgba(255,176,32,.32);color:var(--warn);}
.pill-neutral{background:rgba(255,255,255,.06);border:1px solid var(--stroke);color:var(--text-low);}
.pill-brand{background:rgba(45,107,255,.14);border:1px solid rgba(45,107,255,.36);color:#9FBEFF;}

/* ---------- Glass card ---------- */
.glass{
  position:relative;
  border-radius:var(--radius-card);
  background:rgba(255,255,255,.045);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
  padding:24px;
  transition:transform .28s ease,background .28s ease;
}
.glass::before{
  content:"";
  position:absolute;inset:0;
  border-radius:inherit;
  padding:1px;
  background:linear-gradient(140deg,rgba(255,255,255,.30),rgba(255,255,255,.04) 45%,rgba(255,255,255,.02) 70%,rgba(45,107,255,.22));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;
  mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  mask-composite:exclude;
  pointer-events:none;
}
.glass-hover:hover{transform:translateY(-4px);background:rgba(255,255,255,.062);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:118px 0 64px;
  overflow:hidden;
  scroll-margin-top:96px;
}
@media(min-width:1024px){.hero{padding:150px 0 96px;}}
.hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:32px 32px;
  mask-image:radial-gradient(ellipse 90% 70% at 50% 20%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 20%,#000 0%,transparent 78%);
  pointer-events:none;
}
.hero-glow-a,.hero-glow-b{position:absolute;border-radius:50%;filter:blur(120px);pointer-events:none;}
.hero-glow-a{width:520px;height:520px;top:-180px;right:-120px;background:var(--brand);opacity:.12;}
.hero-glow-b{width:420px;height:420px;bottom:-200px;left:-140px;background:var(--accent);opacity:.08;}
.hero-grid{position:relative;display:grid;gap:44px;align-items:center;}
@media(min-width:1024px){.hero-grid{grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:56px;}}
.hero h1{
  font-size:clamp(30px,5.2vw,56px);
  line-height:1.12;
  font-weight:800;
  letter-spacing:-0.02em;
  margin:18px 0 0;
}
.hero h1 .hl{
  background:linear-gradient(120deg,var(--accent),#7EE7C4 60%,#9FBEFF);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-lede{
  margin-top:18px;
  font-size:16.5px;
  color:var(--text-mid);
  max-width:520px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-points{
  display:flex;flex-wrap:wrap;gap:20px;
  margin-top:30px;
  padding-top:24px;
  border-top:1px solid var(--stroke);
}
.hero-point{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--text-low);}
.hero-point svg{width:17px;height:17px;color:var(--accent);flex-shrink:0;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--radius-card);
  box-shadow:0 0 0 1px var(--stroke-strong),0 40px 90px -40px var(--brand-glow);
}
.hero-visual::before{
  content:"";
  position:absolute;inset:-1px;
  border-radius:calc(var(--radius-card) + 1px);
  background:linear-gradient(140deg,rgba(45,107,255,.5),transparent 55%);
  filter:blur(22px);
  opacity:.55;
  z-index:-1;
}
.hero-glass{
  position:absolute;
  left:16px;right:16px;bottom:-22px;
  padding:16px 18px;
  border-radius:16px;
  background:rgba(11,20,40,.86);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--stroke-strong);
  box-shadow:var(--shadow-card);
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:12px;
}
@media(min-width:640px){.hero-glass{left:22px;right:22px;bottom:-26px;padding:18px 22px;}}
.hg-item{min-width:0;}
.hg-num{
  font-family:var(--num-font);
  font-variant-numeric:tabular-nums;
  font-size:clamp(20px,2.4vw,26px);
  font-weight:700;
  color:#fff;
  line-height:1.2;
  display:block;
}
.hg-num em{font-style:normal;font-size:13px;color:var(--accent);margin-left:2px;}
.hg-label{font-size:12px;color:var(--text-low);display:block;margin-top:2px;}

/* ---------- Features ---------- */
.feature-layout{display:grid;gap:22px;margin-top:44px;}
@media(min-width:1024px){.feature-layout{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);}}
.feature-main{padding:0;overflow:hidden;display:flex;flex-direction:column;}
.feature-main img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.feature-main-body{padding:26px 26px 28px;}
.feature-main h3{font-size:22px;margin-bottom:10px;}
.feature-main p{color:var(--text-low);font-size:14.5px;}
.cap-list{margin-top:22px;border-top:1px solid var(--stroke);}
.cap-item{
  display:flex;gap:14px;
  padding:15px 0;
  border-bottom:1px solid var(--stroke);
  align-items:flex-start;
}
.cap-idx{
  font-family:var(--num-font);
  font-variant-numeric:tabular-nums;
  color:var(--accent);
  font-size:13.5px;
  font-weight:700;
  padding-top:3px;
  min-width:26px;
}
.cap-item h4{font-size:15.5px;margin-bottom:3px;}
.cap-item p{font-size:13.5px;color:var(--text-low);}
.feature-side{display:grid;gap:22px;align-content:start;}
@media(min-width:640px) and (max-width:1023px){.feature-side{grid-template-columns:repeat(2,minmax(0,1fr));}}
.side-card h3{font-size:17px;margin:14px 0 8px;}
.side-card p{font-size:14px;color:var(--text-low);}
.icon-box{
  width:42px;height:42px;border-radius:12px;
  display:grid;place-items:center;
  background:rgba(45,107,255,.14);
  border:1px solid rgba(45,107,255,.32);
  color:#9FBEFF;
}
.icon-box svg{width:20px;height:20px;}

/* ---------- Category entries ---------- */
.cat-grid{display:grid;gap:20px;margin-top:44px;}
@media(min-width:700px){.cat-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.cat-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.cat-card{display:flex;flex-direction:column;padding:0;overflow:hidden;}
.cat-cover{position:relative;overflow:hidden;}
.cat-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 1.2s cubic-bezier(.2,.7,.3,1);}
.cat-card:hover .cat-cover img{transform:scale(1.03);}
.cat-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,7,15,0) 40%,rgba(4,7,15,.72));}
.cat-cover .pill{position:absolute;top:14px;left:14px;z-index:2;}
.cat-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.cat-body h3{font-size:18px;margin-bottom:8px;}
.cat-body p{font-size:14px;color:var(--text-low);flex:1;}
.cat-body .btn-text{margin-top:16px;font-size:14px;align-self:flex-start;color:var(--text-hi);}

/* ---------- Demo steps ---------- */
.steps{position:relative;margin-top:44px;display:grid;gap:26px;}
@media(min-width:900px){.steps{grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;}}
.step{position:relative;padding-left:46px;}
@media(min-width:900px){
  .step{padding-left:0;padding-top:0;}
  .step::after{
    content:"";position:absolute;top:9px;left:30px;right:-22px;height:1px;
    background:linear-gradient(90deg,var(--brand),rgba(255,255,255,.08));
  }
  .step:last-child::after{display:none;}
}
.step::before{
  content:"";position:absolute;left:8px;top:4px;width:11px;height:11px;border-radius:50%;
  background:var(--bg-0);border:2px solid var(--accent);
  box-shadow:0 0 0 4px rgba(53,224,161,.14);
}
@media(min-width:900px){.step::before{left:0;top:4px;}}
@media(max-width:899px){
  .step{padding-left:46px;border-left:1px solid var(--stroke);margin-left:13px;}
  .step{padding-bottom:4px;}
}
.step h3{font-size:16.5px;margin-bottom:6px;}
.step p{font-size:13.5px;color:var(--text-low);}
.step-shot{
  margin-top:16px;
  position:relative;
  border-radius:14px;
  overflow:hidden;
  border:1px solid var(--stroke);
  background:var(--bg-2);
}
.step-shot img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.shot-tag{
  position:absolute;top:10px;left:10px;
  font-size:11.5px;padding:3px 9px;border-radius:var(--radius-pill);
  background:rgba(53,224,161,.16);border:1px solid rgba(53,224,161,.35);color:var(--accent);
}
.shot-idx{
  position:absolute;top:10px;right:12px;
  font-family:var(--num-font);font-size:12.5px;color:rgba(255,255,255,.72);
}

/* ---------- Proof ---------- */
.stat-grid{display:grid;gap:18px;margin-top:44px;}
@media(min-width:640px){.stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.stat-grid{grid-template-columns:repeat(4,minmax(0,1fr));}}
.stat{
  border-radius:16px;
  border:1px solid var(--stroke);
  background:rgba(255,255,255,.025);
  padding:22px 20px;
  transition:border-color .25s ease,background .25s ease;
}
.stat:hover{border-color:var(--stroke-strong);background:rgba(255,255,255,.045);}
.stat .value{
  font-family:var(--num-font);
  font-variant-numeric:tabular-nums;
  font-size:clamp(26px,3.4vw,34px);
  font-weight:700;
  line-height:1.1;
  background:linear-gradient(120deg,#fff,#9FBEFF 70%,var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat .value em{font-style:normal;font-size:14px;margin-left:2px;}
.stat .label{font-size:13px;color:var(--text-low);margin-top:6px;}
.quote-grid{display:grid;gap:18px;margin-top:22px;}
@media(min-width:900px){.quote-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.quote{
  border-radius:16px;
  border:1px solid var(--stroke);
  background:rgba(255,255,255,.02);
  padding:20px;
  display:flex;flex-direction:column;gap:14px;
}
.quote-head{display:flex;align-items:center;gap:12px;}
.avatar{
  width:38px;height:38px;border-radius:50%;
  display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(45,107,255,.5),rgba(53,224,161,.42));
  color:#fff;font-weight:700;font-size:15px;flex-shrink:0;
}
.quote-head strong{font-size:14.5px;color:var(--text-hi);display:block;line-height:1.5;}
.quote-head span{font-size:12px;color:var(--text-low);}
.quote p{font-size:14px;color:var(--text-mid);}

/* ---------- News (CMS) ---------- */
.news-grid{display:grid;gap:20px;margin-top:44px;}
@media(min-width:700px){.news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--radius-card);
  border:1px solid var(--stroke);
  background:rgba(255,255,255,.028);
  transition:transform .28s ease,border-color .28s ease,background .28s ease,box-shadow .28s ease;
  color:inherit;
}
.news-card:hover{
  transform:translateY(-4px);
  border-color:var(--stroke-strong);
  background:rgba(255,255,255,.055);
  box-shadow:var(--shadow-card);
  color:inherit;
}
.news-card.featured{grid-column:span 1;}
@media(min-width:1024px){.news-card.featured{grid-column:span 2;}}
.news-cover{overflow:hidden;position:relative;}
.news-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 1.2s cubic-bezier(.2,.7,.3,1);}
.news-card:hover .news-cover img{transform:scale(1.03);}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-body h3{
  font-size:16.5px;
  line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card.featured .news-body h3{font-size:19px;}
.news-body .summary{
  font-size:13.5px;color:var(--text-low);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  flex:1;
}
.news-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:12px;border-top:1px solid var(--stroke);
  font-size:12.5px;color:var(--text-low);
}
.news-meta .go{display:inline-flex;align-items:center;gap:5px;color:var(--text-hi);font-weight:600;}
.news-card:hover .news-meta .go{color:var(--accent);}
.empty-state{
  margin-top:44px;
  border:1px dashed var(--stroke-strong);
  border-radius:var(--radius-card);
  padding:56px 24px;
  text-align:center;
  color:var(--text-low);
  background:rgba(255,255,255,.02);
}
.empty-state svg{width:36px;height:36px;margin:0 auto 14px;color:var(--stroke-strong);display:block;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:44px auto 0;}
.faq-item{
  border:1px solid var(--stroke);
  border-radius:14px;
  background:rgba(255,255,255,.025);
  margin-bottom:12px;
  overflow:hidden;
  transition:background .25s ease,border-color .25s ease;
}
.faq-item:hover{background:rgba(255,255,255,.05);border-color:var(--stroke-strong);}
.faq-item[open]{background:rgba(255,255,255,.05);border-color:rgba(45,107,255,.32);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:18px 20px 18px 22px;
  display:flex;align-items:center;gap:14px;
  font-size:15.5px;font-weight:600;color:var(--text-hi);
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;
  background:linear-gradient(180deg,var(--brand),var(--accent));
  opacity:.8;
}
.faq-q-idx{
  font-family:var(--num-font);font-variant-numeric:tabular-nums;
  font-size:12.5px;color:var(--accent);min-width:24px;
}
.faq-item summary .fx{
  margin-left:auto;width:22px;height:22px;flex-shrink:0;
  display:grid;place-items:center;border-radius:50%;
  border:1px solid var(--stroke-strong);color:var(--text-low);
  font-size:15px;line-height:1;transition:transform .3s ease,color .3s ease,border-color .3s ease;
}
.faq-item[open] summary .fx{transform:rotate(45deg);color:var(--accent);border-color:rgba(53,224,161,.4);}
.faq-a{padding:0 22px 20px 58px;font-size:15px;color:var(--text-mid);}

/* ---------- CTA ---------- */
.cta-card{
  position:relative;
  border-radius:24px;
  padding:44px 26px;
  text-align:center;
  overflow:hidden;
  background:rgba(255,255,255,.04);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--stroke-strong);
  box-shadow:var(--shadow-card);
}
@media(min-width:768px){.cta-card{padding:56px 48px;}}
.cta-card::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:32px 32px;
  mask-image:radial-gradient(ellipse 70% 80% at 50% 0%,#000,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 70% 80% at 50% 0%,#000,transparent 75%);
  pointer-events:none;
}
.cta-card > *{position:relative;}
.cta-card h2{font-size:clamp(24px,3.2vw,36px);line-height:1.25;}
.cta-card p{margin-top:14px;color:var(--text-mid);font-size:15px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:28px;}
.cta-note{margin-top:20px;font-size:13px;color:var(--text-low);}

/* ---------- Footer ---------- */
.site-footer{
  border-top:1px solid var(--stroke);
  background:var(--bg-1);
  padding:56px 0 28px;
  margin-top:0;
}
.footer-grid{display:grid;gap:34px;}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-brand p{font-size:14px;color:var(--text-low);margin-top:14px;max-width:320px;}
.social-row{display:flex;gap:10px;margin-top:18px;}
.social-row a{
  width:38px;height:38px;border-radius:11px;
  display:grid;place-items:center;
  border:1px solid var(--stroke);
  background:rgba(255,255,255,.03);
  color:var(--text-low);
}
.social-row a:hover{color:var(--accent);border-color:rgba(53,224,161,.35);background:rgba(53,224,161,.08);}
.social-row svg{width:17px;height:17px;}
.footer-col h4{font-size:14px;color:var(--text-hi);letter-spacing:.04em;margin-bottom:16px;}
.footer-col li{margin-bottom:11px;}
.footer-col a{font-size:14px;color:var(--text-low);}
.footer-col a:hover{color:var(--accent);}
.footer-contact li{font-size:14px;color:var(--text-low);margin-bottom:11px;display:flex;gap:8px;align-items:flex-start;}
.footer-contact svg{width:16px;height:16px;color:var(--brand);flex-shrink:0;margin-top:5px;}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid var(--stroke);
  display:flex;flex-wrap:wrap;gap:12px 24px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-low);
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:18px;}

/* ---------- Floating CTA ---------- */
.float-cta{
  position:fixed;
  z-index:70;
  left:20px;right:20px;bottom:16px;
  display:none;
  gap:10px;
  padding:10px;
  border-radius:16px;
  background:rgba(7,13,28,.92);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border:1px solid var(--stroke);
  box-shadow:0 18px 44px -22px rgba(0,0,0,.95);
  opacity:0;
  transform:translateY(12px);
  transition:opacity .35s ease,transform .35s ease;
  pointer-events:none;
}
.float-cta.show{display:flex;opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta .btn-primary{flex:2;}
.float-cta .btn-ghost{flex:1;}
.to-top{
  position:fixed;
  z-index:70;
  right:20px;bottom:16px;
  width:46px;height:46px;border-radius:50%;
  display:none;place-items:center;
  background:linear-gradient(135deg,var(--brand),#4E8CFF);
  color:#fff;
  box-shadow:var(--shadow-glow);
  opacity:0;
  transition:opacity .35s ease,transform .25s ease;
}
.to-top.show{display:grid;opacity:1;}
.to-top:hover{color:#fff;transform:translateY(-2px);}
.to-top svg{width:18px;height:18px;}
@media(min-width:1024px){
  .float-cta{
    left:auto;right:28px;bottom:28px;
    padding:0;background:none;border:0;box-shadow:none;backdrop-filter:none;
    transform:translateY(0);
  }
  .float-cta.show{display:flex;}
  .float-cta .btn-ghost{display:none;}
  .float-cta .btn-primary{border-radius:var(--radius-pill);padding:0 26px;height:52px;}
  .to-top{right:28px;bottom:96px;width:48px;height:48px;}
}
@media(max-width:1023px){
  body{padding-bottom:84px;}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --bg-0:#04070F; --bg-1:#070D1C; --bg-2:#0B1428;
  --brand:#2D6BFF; --brand-deep:#1740C4; --brand-glow:rgba(45,107,255,.45);
  --accent:#35E0A1; --warn:#FFB020;
  --text-hi:#EAF0FF; --text-mid:#C3CFE6; --text-low:#8496B8;
  --stroke:rgba(255,255,255,.10); --stroke-strong:rgba(255,255,255,.18);
  --radius-card:18px; --radius-btn:12px; --radius-pill:999px;
  --shadow-card:0 18px 48px -24px rgba(0,0,0,.85);
  --shadow-glow:0 0 0 1px rgba(45,107,255,.35), 0 12px 40px -12px var(--brand-glow);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-0);color:var(--text-mid);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(520px 320px at 88% -6%, rgba(45,107,255,.12), transparent 70%),
    radial-gradient(460px 300px at 4% 96%, rgba(53,224,161,.09), transparent 70%);
}
img{max-width:100%;display:block;border-radius:14px}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--accent)}
button{font:inherit;background:none;border:0;cursor:pointer;color:inherit}
h1,h2,h3,h4{color:var(--text-hi);margin:0;line-height:1.3;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1}
@media(min-width:768px){.container{padding:0 32px}}
@media(min-width:1024px){.container{padding:0 40px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease, border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand) 0%,#4E8CFF 100%);
  color:#fff;box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-1px);color:#fff;box-shadow:0 0 0 1px rgba(45,107,255,.5),0 18px 46px -12px var(--brand-glow)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:rgba(255,255,255,.03);border:1px solid var(--stroke-strong);color:var(--text-hi);
}
.btn-ghost:hover{background:rgba(255,255,255,.07);border-color:rgba(53,224,161,.55);color:var(--text-hi);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
.btn-lg{min-height:52px;padding:0 26px;font-size:16px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,13,28,.72);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--stroke);
  transition:background .25s ease, box-shadow .25s ease;
}
.site-header.scrolled{background:rgba(7,13,28,.94);box-shadow:0 16px 46px -30px rgba(0,0,0,.95)}
.header-inner{display:flex;align-items:center;gap:14px;min-height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),#4E8CFF);box-shadow:var(--shadow-glow);
}
.logo-mark svg{width:18px;height:18px}
.logo-text{font-size:19px;font-weight:700;color:var(--text-hi);letter-spacing:-.01em}
.logo-text em{font-style:normal;color:var(--accent)}
.nav-desktop{display:none;align-items:center;gap:2px;margin:0 auto}
.nav-desktop a{
  position:relative;display:inline-flex;align-items:center;min-height:44px;
  padding:0 12px;font-size:15px;color:var(--text-mid);border-radius:10px;
}
.nav-desktop a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:8px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-desktop a:hover{color:var(--text-hi);background:rgba(255,255,255,.05)}
.nav-desktop a:hover::after,.nav-desktop a.active::after{transform:scaleX(1)}
.nav-desktop a.active{color:var(--text-hi)}
.header-right{display:flex;align-items:center;gap:10px;margin-left:auto}
.status-badge{
  display:none;align-items:center;gap:7px;padding:7px 13px;border-radius:var(--radius-pill);
  background:rgba(53,224,161,.12);color:var(--accent);font-size:12.5px;letter-spacing:.04em;
}
.status-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 0 rgba(53,224,161,.55);animation:pulse 2.2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(53,224,161,.5)}70%{box-shadow:0 0 0 8px rgba(53,224,161,0)}100%{box-shadow:0 0 0 0 rgba(53,224,161,0)}}
.countdown{
  display:none;align-items:center;gap:6px;font-size:13px;color:var(--text-low);
}
.countdown b{
  font-family:"DIN Alternate","Bebas Neue",ui-monospace,monospace;
  font-variant-numeric:tabular-nums;color:var(--warn);font-weight:700;letter-spacing:.06em;
}
.countdown b i{color:rgba(255,255,255,.4);font-style:normal}
#menuBtn{display:inline-flex}
@media(min-width:1024px){
  .nav-desktop{display:flex}
  #menuBtn{display:none!important}
  #mobileNav{display:none!important}
  .status-badge{display:inline-flex}
  .countdown{display:inline-flex}
}

/* ---------- 面包屑 ---------- */
.crumb-wrap{padding:22px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-low)}
.breadcrumb a{color:var(--text-low)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:var(--text-mid)}

/* ---------- 文章头部 ---------- */
.article-head{padding:26px 0 8px;max-width:820px}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--radius-pill);
  background:rgba(53,224,161,.12);color:var(--accent);
  font-size:12.5px;letter-spacing:.04em;font-weight:600;
}
.pill-neutral{background:rgba(255,255,255,.06);color:var(--text-low);font-weight:400}
.article-head h1{
  margin:18px 0 0;font-size:clamp(26px,4.4vw,40px);font-weight:800;line-height:1.22;letter-spacing:-.02em;
}
.post-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:18px;font-size:13.5px;color:var(--text-low);
  font-variant-numeric:tabular-nums;
}
.post-meta span.sep{opacity:.45}
.post-meta i{color:var(--text-low);margin-right:4px}

/* ---------- 正文 ---------- */
.article-main{padding:26px 0 20px}
.article-panel{
  position:relative;max-width:820px;
  background:rgba(255,255,255,.045);
  border:1px solid var(--stroke);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:26px 20px 34px;
  backdrop-filter:blur(14px) saturate(140%);
}
@media(min-width:768px){.article-panel{padding:38px 40px 46px}}
.article-panel::before{
  content:"";position:absolute;inset:0;border-radius:var(--radius-card);pointer-events:none;
  background:linear-gradient(135deg,rgba(255,255,255,.14),rgba(255,255,255,0) 42%,rgba(255,255,255,.06));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;padding:1px;
}
.post-body{max-width:760px;font-size:16.5px;line-height:1.9;color:var(--text-mid)}
.post-body p{margin:0 0 20px}
.post-body h2{
  position:relative;margin:40px 0 16px;padding-left:14px;
  font-size:clamp(20px,2.6vw,24px);font-weight:700;color:var(--text-hi);
}
.post-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--brand),var(--accent));
}
.post-body h3{margin:28px 0 12px;font-size:20px;font-weight:700;color:var(--text-hi)}
.post-body ul,.post-body ol{margin:0 0 20px;padding-left:1.4em}
.post-body li{margin-bottom:8px}
.post-body li::marker{color:var(--accent)}
.post-body blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--accent);
  background:rgba(255,255,255,.045);border-radius:0 14px 14px 0;color:var(--text-hi);
}
.post-body img{margin:24px auto;border-radius:14px;box-shadow:var(--shadow-card)}
.post-body a{color:var(--accent);border-bottom:1px solid rgba(53,224,161,.4)}
.post-body a:hover{border-bottom-color:var(--accent)}
.post-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;display:block;overflow-x:auto}
.post-body th{background:var(--bg-2);color:var(--text-hi);text-align:left;font-weight:600}
.post-body th,.post-body td{padding:11px 14px;border-bottom:1px solid var(--stroke)}
.post-body code{
  background:var(--bg-2);padding:2px 7px;border-radius:6px;color:var(--accent);
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.92em;
}
.post-body pre{
  background:var(--bg-2);border:1px solid var(--stroke);border-radius:12px;
  padding:16px;overflow-x:auto;margin:24px 0;
}
.post-body pre code{background:none;padding:0;color:var(--text-mid)}
.post-empty{
  border:1px dashed var(--stroke-strong);border-radius:16px;
  padding:44px 22px;text-align:center;background:rgba(255,255,255,.02);
}
.post-empty .icon{
  width:52px;height:52px;margin:0 auto 14px;border-radius:14px;display:grid;place-items:center;
  background:rgba(45,107,255,.14);color:var(--brand);
}
.post-empty h2{font-size:20px;margin-bottom:8px}
.post-empty p{font-size:14.5px;color:var(--text-low);margin-bottom:20px}

/* ---------- 标签与分享 ---------- */
.post-foot{max-width:820px;margin-top:26px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;padding:7px 14px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--stroke);
  font-size:13px;color:var(--text-low);transition:.2s ease;
}
.tag:hover{color:var(--accent);border-color:rgba(53,224,161,.45);background:rgba(53,224,161,.08)}
.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:22px}
.share-row .label{font-size:13.5px;color:var(--text-low)}
.share-btn{
  width:44px;height:44px;display:grid;place-items:center;border-radius:12px;
  background:rgba(255,255,255,.045);border:1px solid var(--stroke);color:var(--text-mid);
  transition:.2s ease;
}
.share-btn:hover{color:var(--accent);border-color:rgba(53,224,161,.5);transform:translateY(-2px)}

/* ---------- 继续阅读 ---------- */
.section{padding:64px 0;scroll-margin-top:96px}
@media(min-width:1024px){.section{padding:88px 0}}
.section-head{margin-bottom:26px}
.eyebrow{
  display:flex;align-items:center;gap:10px;
  font-size:12.5px;letter-spacing:.18em;color:var(--accent);text-transform:uppercase;
  margin-bottom:10px;font-weight:600;
}
.section-head h2{font-size:clamp(22px,3vw,32px);font-weight:700}
.section-head p{margin-top:10px;font-size:15px;color:var(--text-low);max-width:640px}
.grid-3{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:640px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.grid-3{grid-template-columns:repeat(3,1fr)}}
.grid-2{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:768px){.grid-2{grid-template-columns:repeat(2,1fr)}}
.card{
  position:relative;display:flex;flex-direction:column;
  background:rgba(255,255,255,.045);border:1px solid var(--stroke);
  border-radius:var(--radius-card);overflow:hidden;
  transition:transform .25s ease, border-color .25s ease, background .25s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--stroke-strong);background:rgba(255,255,255,.065)}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-2)}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .5s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:18px;font-weight:600;line-height:1.45}
.card-body p{font-size:14px;color:var(--text-low);line-height:1.75}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-low)}
.card-foot .arrow{color:var(--accent);transition:transform .2s ease}
.card:hover .card-foot .arrow{transform:translateX(3px)}
.link-cols{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:768px){.link-cols{grid-template-columns:repeat(2,1fr)}}
.link-card{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 24px;border-radius:16px;border:1px solid var(--stroke);
  background:rgba(255,255,255,.035);transition:.25s ease;
}
.link-card:hover{border-color:rgba(53,224,161,.45);background:rgba(53,224,161,.06);transform:translateY(-2px)}
.link-card .k{font-size:12.5px;color:var(--text-low);letter-spacing:.06em}
.link-card .t{font-size:17px;color:var(--text-hi);font-weight:600;margin-top:6px}
.link-card i{color:var(--accent)}

/* ---------- CTA ---------- */
.cta-card{
  position:relative;overflow:hidden;
  border-radius:24px;border:1px solid var(--stroke);
  background:linear-gradient(135deg,rgba(45,107,255,.16),rgba(11,20,40,.9) 55%,rgba(53,224,161,.10));
  padding:34px 22px;
  box-shadow:var(--shadow-card);
}
@media(min-width:768px){.cta-card{padding:52px 48px}}
.cta-card::before{
  content:"";position:absolute;inset:0;opacity:.5;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:32px 32px;
}
.cta-inner{position:relative;display:flex;flex-direction:column;gap:24px}
@media(min-width:1024px){.cta-inner{flex-direction:row;align-items:center;justify-content:space-between}}
.cta-inner h2{font-size:clamp(22px,3vw,34px);font-weight:800;max-width:640px}
.cta-inner p{margin-top:12px;font-size:15.5px;color:var(--text-mid);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:40px;border-top:1px solid var(--stroke);background:var(--bg-1);padding:56px 0 26px;position:relative;z-index:1}
.footer-grid{display:grid;gap:34px;grid-template-columns:1fr}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr}}
.footer-brand p{margin-top:16px;font-size:14.5px;color:var(--text-low);max-width:330px}
.social-row{display:flex;gap:10px;margin-top:18px}
.social-row a{
  width:44px;height:44px;display:grid;place-items:center;border-radius:12px;
  border:1px solid var(--stroke);background:rgba(255,255,255,.035);color:var(--text-mid);transition:.2s ease;
}
.social-row a:hover{color:var(--accent);border-color:rgba(53,224,161,.5);transform:translateY(-2px)}
.social-row svg{width:18px;height:18px}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text-hi);margin-bottom:16px}
.footer-col ul{list-style:none;padding:0;display:grid;gap:11px}
.footer-col a{font-size:14.5px;color:var(--text-low)}
.footer-col a:hover{color:var(--accent)}
.footer-contact li{display:flex;align-items:flex-start;gap:9px;font-size:14px;color:var(--text-low);line-height:1.7}
.footer-contact svg{width:17px;height:17px;flex-shrink:0;margin-top:4px;color:var(--brand)}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid var(--stroke);
  display:flex;flex-direction:column;gap:10px;font-size:13px;color:var(--text-low);
}
@media(min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}
.footer-bottom a{color:var(--text-low)}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- 浮动 CTA ---------- */
.float-bar{
  position:fixed;right:20px;bottom:20px;z-index:70;
  display:flex;gap:10px;align-items:center;
  background:rgba(11,20,40,.9);border:1px solid var(--stroke);
  border-radius:var(--radius-pill);padding:8px;
  box-shadow:0 18px 48px -24px rgba(0,0,0,.9);
  backdrop-filter:blur(14px) saturate(140%);
}
.float-bar #backTop{
  opacity:0;pointer-events:none;width:44px;padding:0;
  transition:opacity .3s ease;
}
.float-bar.show #backTop{opacity:1;pointer-events:auto}
@media(max-width:767px){
  body{padding-bottom:78px}
  .float-bar{
    left:0;right:0;bottom:0;gap:10px;padding:10px 16px;border-radius:0;
    border-left:0;border-right:0;border-bottom:0;
  }
  .float-bar .btn-primary{flex:2}
  .float-bar #backTop{opacity:1;pointer-events:auto;flex:1;width:auto}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --bg-0:#04070F; --bg-1:#070D1C; --bg-2:#0B1428;
  --brand:#2D6BFF; --brand-deep:#1740C4; --brand-glow:rgba(45,107,255,.45);
  --accent:#35E0A1; --warn:#FFB020;
  --text-hi:#EAF0FF; --text-mid:#C3CFE6; --text-low:#8496B8;
  --stroke:rgba(255,255,255,.10); --stroke-strong:rgba(255,255,255,.18);
  --radius-card:18px; --radius-btn:12px; --radius-pill:999px;
  --shadow-card:0 18px 48px -24px rgba(0,0,0,.85);
  --shadow-glow:0 0 0 1px rgba(45,107,255,.35), 0 12px 40px -12px var(--brand-glow);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"DIN Alternate","Bebas Neue",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::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-mid);
  font-family:var(--font-cn);font-size:16px;line-height:1.8;
  overflow-x:hidden;padding-bottom:0;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(600px 420px at 88% -6%,rgba(45,107,255,.12),transparent 70%),
    radial-gradient(560px 420px at 2% 96%,rgba(53,224,161,.09),transparent 70%);
}
img{max-width:100%;display:block}
a{color:var(--text-hi);text-decoration:none;transition:color .25s ease}
a:hover{color:var(--accent)}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--text-hi);font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:rgba(53,224,161,.3);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1}
@media (min-width:768px){.container{padding:0 32px}}
@media (min-width:1024px){.container{padding:0 40px}}
section[id]{scroll-margin-top:96px}

/* ---------- 数字字体 ---------- */
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
  white-space:nowrap;min-width:44px;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand) 0%,#4E8CFF 100%);
  color:#fff;box-shadow:var(--shadow-glow);
}
.btn-primary:hover{color:#fff;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(45,107,255,.5),0 18px 46px -12px var(--brand-glow)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:rgba(255,255,255,.03);border-color:var(--stroke-strong);color:var(--text-hi);
}
.btn-ghost:hover{background:rgba(255,255,255,.07);border-color:var(--accent);color:var(--text-hi);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-lg{height:52px;padding:0 26px;font-size:16px}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;height:44px;font-weight:600;color:var(--text-hi);
}
.btn-text svg{transition:transform .25s ease}
.btn-text:hover svg{transform:translateX(3px)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:7px;padding:5px 12px;border-radius:var(--radius-pill);
  font-size:12px;letter-spacing:.04em;border:1px solid var(--stroke);background:rgba(255,255,255,.06);color:var(--text-low);
}
.badge-accent{background:rgba(53,224,161,.12);border-color:rgba(53,224,161,.35);color:var(--accent)}
.badge-warn{background:rgba(255,176,32,.12);border-color:rgba(255,176,32,.35);color:var(--warn)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  transition:background .3s ease,box-shadow .3s ease,border-color .3s ease,backdrop-filter .3s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(7,13,28,.86);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom-color:var(--stroke);
  box-shadow:0 14px 40px -30px rgba(0,0,0,.95);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  height:72px;
}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text-hi);font-weight:700}
.logo:hover{color:var(--text-hi)}
.logo-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand),#4E8CFF);
  box-shadow:0 10px 26px -12px var(--brand-glow);
}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:18px;letter-spacing:-.01em}
.logo-text em{font-style:normal;color:var(--accent)}
.nav-desktop{display:none;align-items:center;gap:26px}
.nav-desktop a{
  position:relative;font-size:14.5px;color:var(--text-mid);padding:6px 0;font-weight:500;
}
.nav-desktop a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--accent),rgba(53,224,161,0));
  transform:scaleX(0);transform-origin:left;transition:transform .28s ease;
}
.nav-desktop a:hover{color:var(--text-hi)}
.nav-desktop a:hover::after,.nav-desktop a.active::after{transform:scaleX(1)}
.nav-desktop a.active{color:var(--text-hi)}
.header-right{display:flex;align-items:center;gap:10px}
.status-badge{
  display:none;align-items:center;gap:7px;padding:6px 12px;border-radius:var(--radius-pill);
  font-size:12.5px;color:var(--text-mid);background:rgba(255,255,255,.05);border:1px solid var(--stroke);
}
.status-badge .dot{
  width:7px;height:7px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 4px rgba(53,224,161,.16);animation:pulse 2.4s infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.countdown{
  display:none;font-size:12.5px;color:var(--text-low);
}
.countdown b{font-family:var(--font-num);font-variant-numeric:tabular-nums;color:var(--warn);font-size:15px;letter-spacing:.06em}
.countdown b i{color:rgba(255,255,255,.4);font-style:normal;margin:0 1px}
#menuBtn{display:inline-flex}
@media (min-width:1024px){
  .nav-desktop{display:flex}
  #menuBtn{display:none !important}
  .status-badge,.countdown{display:inline-flex;align-items:center}
  .header-inner{height:78px}
}

/* ---------- 首屏 ---------- */
.hero-cat{
  position:relative;padding:132px 0 72px;overflow:hidden;
  background-image:linear-gradient(180deg,rgba(4,7,15,.86) 0%,rgba(4,7,15,.93) 55%,var(--bg-0) 100%),
    url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
}
.hero-cat::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:32px 32px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
}
.hero-grid{display:grid;gap:34px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:minmax(0,1.05fr) minmax(0,.85fr);gap:52px}}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-low);margin-bottom:18px}
.breadcrumb a{color:var(--text-low)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb span.sep{opacity:.5}
.hero-cat h1{
  font-size:clamp(30px,5.2vw,52px);line-height:1.14;letter-spacing:-.02em;font-weight:800;
  margin:14px 0 16px;
}
.hero-cat h1 .hl{
  background:linear-gradient(100deg,var(--accent),#7CE7C4);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{font-size:17px;color:var(--text-mid);max-width:560px;line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.trust-row{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px}
.trust-row li{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--text-low)}
.trust-row svg{width:18px;height:18px;color:var(--accent);flex:0 0 auto}

.hero-card{
  position:relative;border-radius:var(--radius-card);padding:22px;
  background:rgba(255,255,255,.045);border:1px solid var(--stroke);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.hero-card::before{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:linear-gradient(135deg,rgba(255,255,255,.16),rgba(255,255,255,0) 42%,rgba(255,255,255,.06));
  -webkit-mask:linear-gradient(#000,#000) content-box,linear-gradient(#000,#000);
  -webkit-mask-composite:xor;mask-composite:exclude;padding:1px;
}
.hero-card-media{
  border-radius:14px;overflow:hidden;border:1px solid var(--stroke);
  aspect-ratio:16/10;margin-bottom:18px;
}
.hero-card-media img{width:100%;height:100%;object-fit:cover}
.hero-card-title{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}
.hero-card-title h2{font-size:17px;font-weight:600}
.metric-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;border-top:1px solid var(--stroke);padding-top:16px}
.metric{display:flex;flex-direction:column;gap:2px}
.metric b{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:24px;color:var(--text-hi);line-height:1.2}
.metric b.accent{color:var(--accent)}
.metric span{font-size:12.5px;color:var(--text-low)}
.progress-track{height:6px;border-radius:999px;background:rgba(255,255,255,.08);margin-top:16px;overflow:hidden}
.progress-track i{display:block;height:100%;width:68%;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--accent))}

/* ---------- 通用板块 ---------- */
.section{padding:64px 0}
@media (min-width:1024px){.section{padding:96px 0}}
.sec-head{margin-bottom:30px;max-width:720px}
.sec-no{
  display:inline-block;font-family:var(--font-num);font-size:13px;letter-spacing:.18em;
  color:var(--accent);text-transform:uppercase;margin-bottom:10px;
}
.sec-head h2{font-size:clamp(24px,3.2vw,34px);line-height:1.25;letter-spacing:-.01em}
.sec-head p{margin-top:12px;color:var(--text-mid);font-size:15.5px}

/* ---------- 分类页布局 ---------- */
.cat-layout{display:grid;gap:34px;align-items:start}
@media (min-width:1024px){
  .cat-layout{grid-template-columns:250px minmax(0,1fr);gap:48px}
}
.toc-wrap{position:relative}
.toc-card{
  border-radius:var(--radius-card);border:1px solid var(--stroke);
  background:rgba(255,255,255,.04);padding:18px;
  backdrop-filter:blur(14px) saturate(140%);
}
.toc-title{font-size:12.5px;letter-spacing:.16em;color:var(--text-low);margin-bottom:10px}
.toc-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;scrollbar-width:thin}
.toc-list::-webkit-scrollbar{height:4px}
.toc-list::-webkit-scrollbar-thumb{background:rgba(255,255,255,.16);border-radius:999px}
.toc-list a{
  display:flex;align-items:center;gap:10px;white-space:nowrap;
  padding:10px 14px;border-radius:10px;font-size:14px;color:var(--text-mid);
  border:1px solid transparent;transition:.22s ease;
}
.toc-list a .toc-idx{font-family:var(--font-num);font-size:12px;color:var(--text-low)}
.toc-list a:hover{color:var(--text-hi);background:rgba(255,255,255,.05)}
.toc-list a.active{
  color:#fff;background:rgba(53,224,161,.08);
  border-color:rgba(53,224,161,.3);
}
.toc-list a.active .toc-idx{color:var(--accent)}
@media (min-width:1024px){
  .toc-card{position:sticky;top:104px}
  .toc-list{flex-direction:column;overflow:visible;gap:2px}
  .toc-list a{
    border-radius:0;border-left:2px solid transparent;border-top:0;border-right:0;border-bottom:0;
    padding:11px 12px;
  }
  .toc-list a.active{background:rgba(53,224,161,.06);border-left-color:var(--accent);border-top-color:transparent}
}

.cat-main{display:flex;flex-direction:column;gap:56px;min-width:0}
.block{
  border-radius:var(--radius-card);border:1px solid var(--stroke);
  background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.015));
  padding:24px;
}
@media (min-width:768px){.block{padding:30px}}
.block-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:12px;margin-bottom:6px}
.block-head h2{font-size:clamp(21px,2.6vw,26px);letter-spacing:-.01em}
.block-head .badge{margin-left:auto}
.block-desc{color:var(--text-mid);font-size:15px;margin-bottom:18px}

.points{border-top:1px solid var(--stroke)}
.point-item{
  display:grid;grid-template-columns:40px minmax(0,1fr);gap:14px;
  padding:18px 8px;border-bottom:1px solid var(--stroke);transition:background .22s ease;
}
.point-item:last-child{border-bottom:0}
.point-item:hover{background:rgba(255,255,255,.025)}
.point-idx{font-family:var(--font-num);font-variant-numeric:tabular-nums;color:var(--accent);font-size:15px;padding-top:2px}
.point-item h3{font-size:17px;font-weight:600;margin-bottom:2px}
.point-item p{font-size:14px;color:var(--text-low);line-height:1.75}

/* 一周节奏 */
.rhythm-list{display:grid;gap:12px}
@media (min-width:768px){.rhythm-list{grid-template-columns:repeat(2,minmax(0,1fr))}}
.rhythm-item{
  display:flex;gap:14px;align-items:flex-start;padding:16px 18px;border-radius:14px;
  border:1px solid var(--stroke);background:rgba(255,255,255,.03);transition:.24s ease;
}
.rhythm-item:hover{border-color:var(--stroke-strong);transform:translateY(-2px)}
.rhythm-day{
  flex:0 0 auto;font-family:var(--font-num);font-size:13px;letter-spacing:.06em;
  color:var(--accent);background:rgba(53,224,161,.1);border:1px solid rgba(53,224,161,.3);
  border-radius:8px;padding:4px 10px;line-height:1.6;
}
.rhythm-item h3{font-size:15.5px;font-weight:600;margin-bottom:2px}
.rhythm-item p{font-size:13.5px;color:var(--text-low)}
.empty-note{
  padding:26px;border:1px dashed var(--stroke-strong);border-radius:14px;
  text-align:center;color:var(--text-low);font-size:14px;
}

/* 内容卡 */
.card-grid{display:grid;gap:20px}
@media (min-width:768px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.info-card{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--stroke);background:var(--bg-2);
  transition:transform .3s ease,border-color .3s ease;
}
.info-card:hover{transform:translateY(-4px);border-color:var(--stroke-strong)}
.info-card-media{aspect-ratio:16/10;overflow:hidden;position:relative}
.info-card-media img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s ease}
.info-card:hover .info-card-media img{transform:scale(1.03)}
.info-card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(4,7,15,.05),rgba(4,7,15,.75));
}
.info-card-body{padding:20px}
.info-card-body h3{font-size:17.5px;margin:10px 0 8px}
.info-card-body p{font-size:14px;color:var(--text-low)}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:860px;margin:0 auto}
.faq-item{
  border-radius:14px;border:1px solid var(--stroke);background:rgba(255,255,255,.035);
  overflow:hidden;transition:background .22s ease,border-color .22s ease;
}
.faq-item:hover{background:rgba(255,255,255,.06)}
.faq-item.open{border-color:rgba(53,224,161,.3)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:12px;text-align:left;
  background:none;border:0;padding:18px 20px;cursor:pointer;color:var(--text-hi);
  font-size:16px;font-weight:600;line-height:1.6;min-height:44px;
}
.faq-q .q-idx{
  font-family:var(--font-num);font-size:13px;color:var(--accent);flex:0 0 auto;
  border-left:2px solid var(--accent);padding-left:10px;
}
.faq-q .q-toggle{
  margin-left:auto;flex:0 0 auto;width:22px;height:22px;display:grid;place-items:center;
  color:var(--text-low);transition:transform .28s ease,color .28s ease;
}
.faq-item.open .q-toggle{transform:rotate(45deg);color:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a p{padding:0 20px 20px 44px;font-size:15px;color:var(--text-mid);line-height:1.85}

/* ---------- CTA ---------- */
.cta-card{
  position:relative;border-radius:24px;overflow:hidden;
  border:1px solid var(--stroke-strong);
  background:
    linear-gradient(135deg,rgba(45,107,255,.2),rgba(4,7,15,.9) 55%),
    rgba(255,255,255,.035);
  padding:36px 24px;text-align:center;
}
.cta-card::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.45;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:32px 32px;
  mask-image:radial-gradient(circle at 50% 0%,rgba(0,0,0,.9),transparent 72%);
}
@media (min-width:768px){.cta-card{padding:52px 48px}}
.cta-card h2{font-size:clamp(23px,3vw,32px);position:relative}
.cta-card p{margin-top:12px;color:var(--text-mid);font-size:15.5px;position:relative}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:26px;position:relative}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:72px;border-top:1px solid var(--stroke);background:var(--bg-1);
  padding:52px 0 26px;position:relative;z-index:1;
}
.footer-grid{display:grid;gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand p{margin-top:14px;font-size:14px;color:var(--text-low);max-width:320px}
.social-row{display:flex;gap:10px;margin-top:18px}
.social-row a{
  width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
  border:1px solid var(--stroke);background:rgba(255,255,255,.04);color:var(--text-mid);
  transition:.24s ease;
}
.social-row a:hover{color:var(--accent);border-color:rgba(53,224,161,.4);transform:translateY(-2px)}
.social-row svg{width:18px;height:18px}
.footer-col h4{font-size:15px;margin-bottom:14px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--text-low)}
.footer-col a:hover{color:var(--accent)}
.footer-contact li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-low)}
.footer-contact svg{width:16px;height:16px;color:var(--accent);flex:0 0 auto}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--stroke);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--text-low);
}

/* ---------- 浮动 CTA ---------- */
.float-dock{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:flex;align-items:center;gap:10px;
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .3s ease,transform .3s ease;
}
.float-dock.show{opacity:1;transform:none;pointer-events:auto}
.back-top{
  width:46px;height:46px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--stroke-strong);background:rgba(11,20,40,.9);color:var(--text-hi);
  backdrop-filter:blur(12px);cursor:pointer;transition:.24s ease;
}
.back-top:hover{color:var(--accent);border-color:rgba(53,224,161,.45);box-shadow:0 0 0 1px rgba(53,224,161,.25),0 12px 30px -12px rgba(53,224,161,.5)}
.back-top svg{width:18px;height:18px}
@media (max-width:767px){
  .float-dock{
    left:0;right:0;bottom:0;gap:8px;padding:10px 14px;
    background:rgba(7,13,28,.92);backdrop-filter:blur(16px);
    border-top:1px solid var(--stroke);
  }
  .float-dock .btn-primary{flex:2}
  .float-dock .btn-ghost{flex:1}
  .back-top{display:none}
  body{padding-bottom:74px}
}

/* roulang page: category3 */
:root{
    --bg-0:#04070F;
    --bg-1:#070D1C;
    --bg-2:#0B1428;
    --brand:#2D6BFF;
    --brand-deep:#1740C4;
    --brand-glow:rgba(45,107,255,.45);
    --accent:#35E0A1;
    --warn:#FFB020;
    --text-hi:#EAF0FF;
    --text-mid:#C3CFE6;
    --text-low:#8496B8;
    --stroke:rgba(255,255,255,.10);
    --stroke-strong:rgba(255,255,255,.18);
    --radius-card:18px;
    --radius-btn:12px;
    --radius-pill:999px;
    --shadow-card:0 18px 48px -24px rgba(0,0,0,.85);
    --shadow-glow:0 0 0 1px rgba(45,107,255,.35),0 12px 40px -12px var(--brand-glow);
    --container:1200px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg-0);
    color:var(--text-mid);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:0;
    background:
      radial-gradient(680px 420px at 88% -6%,rgba(45,107,255,.12),transparent 70%),
      radial-gradient(560px 380px at -8% 62%,rgba(53,224,161,.09),transparent 70%);
  }
  a{color:var(--text-hi);text-decoration:none;transition:color .22s ease;}
  a:hover{color:var(--accent);}
  img{max-width:100%;display:block;}
  button{font-family:inherit;cursor:pointer;}
  h1,h2,h3,h4{color:var(--text-hi);margin:0;line-height:1.25;}
  h1{font-weight:800;letter-spacing:-.02em;}
  h2{font-weight:700;}
  h3{font-weight:600;font-size:20px;}
  p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

  .container{
    width:100%;
    max-width:var(--container);
    margin:0 auto;
    padding:0 20px;
    position:relative;
    z-index:1;
  }
  @media (min-width:640px){.container{padding:0 32px;}}
  @media (min-width:1024px){.container{padding:0 40px;}}

  section{position:relative;z-index:1;}
  .section{padding:56px 0;}
  @media (min-width:1024px){.section{padding:104px 0;}}
  .anchor-offset{scroll-margin-top:96px;}

  /* ============ 头部导航 ============ */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:transparent;
    border-bottom:1px solid transparent;
    transition:background .3s ease,border-color .3s ease,backdrop-filter .3s ease;
  }
  .site-header.is-scrolled{
    background:rgba(7,13,28,.82);
    backdrop-filter:blur(14px) saturate(140%);
    border-bottom-color:var(--stroke);
  }
  .header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    min-height:72px;
  }
  .logo{display:inline-flex;align-items:center;gap:10px;}
  .logo-mark{
    width:34px;height:34px;border-radius:10px;
    display:grid;place-items:center;
    background:linear-gradient(135deg,var(--brand),var(--brand-deep));
    box-shadow:var(--shadow-glow);
    flex:0 0 auto;
  }
  .logo-mark svg{width:19px;height:19px;}
  .logo-text{
    font-size:18px;font-weight:700;color:var(--text-hi);letter-spacing:.01em;
  }
  .logo-text em{
    font-style:normal;
    color:var(--accent);
    margin-left:1px;
  }
  .nav-desktop{display:none;align-items:center;gap:4px;}
  @media (min-width:1024px){.nav-desktop{display:flex;}}
  .nav-desktop a{
    position:relative;
    padding:10px 12px;
    font-size:15px;
    color:var(--text-mid);
    border-radius:var(--radius-btn);
    white-space:nowrap;
  }
  .nav-desktop a:hover{color:var(--text-hi);background:rgba(255,255,255,.05);}
  .nav-desktop a.active{color:var(--text-hi);}
  .nav-desktop a.active::after{
    content:"";
    position:absolute;left:12px;right:12px;bottom:4px;height:2px;
    border-radius:2px;
    background:linear-gradient(90deg,var(--accent),rgba(53,224,161,.15));
  }
  .header-right{display:flex;align-items:center;gap:10px;}
  .status-badge{
    display:none;
    align-items:center;gap:7px;
    padding:6px 12px;
    font-size:12px;
    letter-spacing:.04em;
    color:var(--accent);
    background:rgba(53,224,161,.12);
    border-radius:var(--radius-pill);
    white-space:nowrap;
  }
  @media (min-width:900px){.status-badge{display:inline-flex;}}
  .status-badge .dot{
    width:7px;height:7px;border-radius:50%;
    background:var(--accent);
    box-shadow:0 0 0 4px rgba(53,224,161,.18);
    animation:pulse 2.4s ease-in-out infinite;
  }
  @keyframes pulse{0%,100%{opacity:1}50%{opacity:.45}}
  @media (prefers-reduced-motion:reduce){.status-badge .dot{animation:none;}}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:44px;
    padding:0 20px;
    font-size:15px;
    font-weight:600;
    border-radius:var(--radius-btn);
    border:1px solid transparent;
    transition:transform .2s ease,box-shadow .25s ease,background .22s ease,border-color .22s ease,color .22s ease;
    white-space:nowrap;
  }
  .btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
  .btn-primary{
    background:linear-gradient(135deg,var(--brand),#4E8CFF);
    color:#fff;
    box-shadow:var(--shadow-glow);
  }
  .btn-primary:hover{
    color:#fff;
    transform:translateY(-1px);
    box-shadow:0 0 0 1px rgba(45,107,255,.5),0 18px 46px -14px var(--brand-glow);
  }
  .btn-primary:active{transform:translateY(1px);}
  .btn-ghost{
    background:transparent;
    border-color:var(--stroke-strong);
    color:var(--text-hi);
  }
  .btn-ghost:hover{
    background:rgba(255,255,255,.06);
    border-color:var(--accent);
    color:var(--text-hi);
    transform:translateY(-1px);
  }
  .btn-ghost:active{transform:translateY(1px);}
  .btn-link{
    display:inline-flex;align-items:center;gap:6px;
    color:var(--accent);font-weight:600;font-size:15px;min-height:44px;
  }
  .btn-link svg{transition:transform .22s ease;}
  .btn-link:hover svg{transform:translateX(3px);}

  /* ============ 玻璃卡片 ============ */
  .glass{
    position:relative;
    background:rgba(255,255,255,.045);
    backdrop-filter:blur(14px) saturate(140%);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
  }
  .glass::before{
    content:"";
    position:absolute;
    inset:0;
    border-radius:inherit;
    padding:1px;
    background:linear-gradient(135deg,rgba(255,255,255,.30),rgba(255,255,255,.05) 46%,rgba(255,255,255,.02));
    -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
    -webkit-mask-composite:xor;
    mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
    mask-composite:exclude;
    pointer-events:none;
  }
  @supports not (backdrop-filter:blur(1px)){
    .glass{background:var(--bg-2);}
  }

  .eyebrow{
    display:flex;align-items:center;gap:10px;
    font-size:12px;letter-spacing:.18em;
    color:var(--accent);
    text-transform:uppercase;
    margin-bottom:14px;
    font-weight:600;
  }
  .eyebrow::before{
    content:"";width:22px;height:1px;background:var(--accent);opacity:.7;
  }
  .section-title{font-size:clamp(24px,3.2vw,38px);line-height:1.25;}
  .section-sub{margin-top:12px;font-size:16px;color:var(--text-low);max-width:640px;}

  .pill{
    display:inline-flex;align-items:center;gap:8px;
    padding:6px 14px;
    font-size:12px;letter-spacing:.04em;
    border-radius:var(--radius-pill);
    background:rgba(53,224,161,.12);
    color:var(--accent);
    white-space:nowrap;
  }
  .pill-neutral{background:rgba(255,255,255,.06);color:var(--text-low);}
  .pill-warn{background:rgba(255,176,32,.14);color:var(--warn);}

  /* ============ Hero ============ */
  .hero{
    position:relative;
    padding:44px 0 56px;
    overflow:hidden;
  }
  @media (min-width:1024px){.hero{padding:72px 0 96px;}}
  .hero::after{
    content:"";
    position:absolute;inset:0;
    background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
    background-size:32px 32px;
    -webkit-mask-image:radial-gradient(70% 60% at 30% 30%,#000,transparent 78%);
    mask-image:radial-gradient(70% 60% at 30% 30%,#000,transparent 78%);
    pointer-events:none;
  }
  .hero-grid{display:grid;gap:36px;align-items:center;}
  @media (min-width:1024px){
    .hero-grid{grid-template-columns:1fr 1.02fr;gap:56px;}
  }
  .hero h1{
    font-size:clamp(30px,5.2vw,52px);
    line-height:1.14;
    margin:18px 0 16px;
  }
  .hero-lead{font-size:17px;color:var(--text-mid);max-width:540px;}
  .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 22px;}
  .hero-points{display:flex;flex-wrap:wrap;gap:18px;font-size:13px;color:var(--text-low);}
  .hero-points li{display:flex;align-items:center;gap:7px;}
  .hero-points svg{width:16px;height:16px;color:var(--accent);flex:0 0 auto;}

  .hero-visual{position:relative;}
  .hero-media{
    position:relative;
    border-radius:var(--radius-card);
    overflow:hidden;
    aspect-ratio:16/10;
    box-shadow:0 0 0 1px var(--stroke),0 30px 70px -30px var(--brand-glow);
  }
  .hero-media img{width:100%;height:100%;object-fit:cover;}
  .hero-media::after{
    content:"";
    position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(4,7,15,.12),rgba(4,7,15,.72));
  }
  .hero-card{
    position:relative;
    margin-top:-42px;
    margin-left:auto;
    margin-right:auto;
    width:min(100%,420px);
    padding:22px;
    z-index:2;
  }
  @media (min-width:1024px){
    .hero-card{margin-left:-32px;margin-right:24px;width:auto;}
  }
  .hero-card h3{font-size:16px;margin-bottom:14px;}
  .hero-card ul{display:grid;gap:12px;}
  .hero-card li{
    display:flex;align-items:flex-start;gap:10px;
    font-size:14px;color:var(--text-mid);
  }
  .hero-card li svg{width:18px;height:18px;color:var(--accent);flex:0 0 auto;margin-top:3px;}
  .hero-card .card-foot{
    margin-top:16px;padding-top:14px;
    border-top:1px solid var(--stroke);
    display:flex;align-items:center;justify-content:space-between;gap:10px;
    font-size:13px;color:var(--text-low);
  }

  /* ============ 对比矩阵 ============ */
  .cmp-wrap{padding:0;overflow:hidden;}
  .cmp-head{
    display:none;
    grid-template-columns:1.45fr 1fr 1fr 1fr;
    gap:0;
    background:rgba(255,255,255,.05);
    border-bottom:1px solid var(--stroke);
  }
  @media (min-width:900px){.cmp-head{display:grid;}}
  .cmp-head > div{padding:20px 22px;}
  .cmp-head .col-name{font-size:16px;color:var(--text-hi);font-weight:600;}
  .cmp-head .col-note{font-size:13px;color:var(--text-low);margin-top:6px;line-height:1.6;}
  .cmp-head .col-tag{margin-bottom:10px;}

  .cmp-row{
    display:grid;
    grid-template-columns:1fr;
    gap:0;
    padding:20px 20px 22px;
    border-bottom:1px solid var(--stroke);
    transition:background .22s ease;
  }
  @media (min-width:900px){
    .cmp-row{grid-template-columns:1.45fr 1fr 1fr 1fr;padding:0;}
  }
  .cmp-row:last-child{border-bottom:none;}
  .cmp-row:hover{background:var(--bg-2);}
  .cmp-name{padding:0 0 12px;}
  @media (min-width:900px){.cmp-name{padding:24px 22px;}}
  .cmp-name h3{font-size:19px;color:var(--text-hi);}
  .cmp-name p{margin-top:6px;font-size:13.5px;color:var(--text-low);line-height:1.7;}
  .cmp-cell{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    padding:11px 0;
    border-top:1px dashed var(--stroke);
    font-size:14px;
    color:var(--text-mid);
  }
  .cmp-cell::before{
    content:attr(data-label);
    color:var(--text-low);
    font-size:13px;
    flex:0 0 auto;
  }
  @media (min-width:900px){
    .cmp-cell{
      padding:24px 22px;
      border-top:none;
      justify-content:flex-start;
    }
    .cmp-cell::before{display:none;}
  }
  .cell-val{display:inline-flex;align-items:center;gap:8px;}
  .cell-val svg{width:16px;height:16px;color:var(--accent);flex:0 0 auto;}
  .cell-strong{color:var(--text-hi);font-weight:600;}
  .num{font-variant-numeric:tabular-nums;font-family:"DIN Alternate",ui-monospace,monospace;letter-spacing:.02em;}

  /* ============ 风险卡片 ============ */
  .risk-grid{display:grid;gap:22px;margin-top:38px;}
  @media (min-width:640px){.risk-grid{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.risk-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}
  .risk-card{
    overflow:hidden;
    transition:transform .3s ease;
  }
  .risk-card:hover{transform:translateY(-4px);}
  .risk-media{aspect-ratio:16/10;overflow:hidden;border-radius:var(--radius-card) var(--radius-card) 0 0;margin:-1px -1px 0;}
  .risk-media img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s ease;}
  .risk-card:hover .risk-media img{transform:scale(1.03);}
  .risk-body{padding:22px;}
  .risk-body h3{margin:12px 0 10px;font-size:19px;}
  .risk-body p{font-size:14.5px;color:var(--text-low);}
  .risk-do{
    margin-top:16px;padding-top:14px;
    border-top:1px solid var(--stroke);
    font-size:14px;color:var(--text-mid);
  }
  .risk-do b{color:var(--accent);font-weight:600;margin-right:6px;}

  /* ============ 步骤 ============ */
  .steps{display:grid;gap:20px;margin-top:38px;counter-reset:step;}
  @media (min-width:768px){.steps{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.steps{grid-template-columns:repeat(4,1fr);gap:22px;}}
  .step{padding:24px 22px;}
  .step-num{
    font-family:"DIN Alternate",ui-monospace,monospace;
    font-size:28px;font-weight:700;color:var(--accent);
    letter-spacing:.04em;
    font-variant-numeric:tabular-nums;
  }
  .step h3{font-size:17px;margin:12px 0 8px;}
  .step p{font-size:14px;color:var(--text-low);}

  /* ============ 数据条 ============ */
  .stats-band{
    border-top:1px solid var(--stroke);
    border-bottom:1px solid var(--stroke);
    background:var(--bg-1);
  }
  .stats-grid{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:0;
  }
  @media (min-width:900px){.stats-grid{grid-template-columns:repeat(4,1fr);}}
  .stat{
    padding:26px 20px;
    border-bottom:1px solid var(--stroke);
  }
  @media (min-width:900px){
    .stat{border-bottom:none;border-right:1px solid var(--stroke);padding:34px 26px;}
    .stat:last-child{border-right:none;}
  }
  .stat-num{
    font-family:"DIN Alternate",ui-monospace,monospace;
    font-size:clamp(28px,3.4vw,38px);
    font-weight:700;
    color:var(--text-hi);
    font-variant-numeric:tabular-nums;
    letter-spacing:.01em;
  }
  .stat-num span{font-size:15px;color:var(--accent);margin-left:4px;font-family:inherit;}
  .stat-label{margin-top:8px;font-size:13.5px;color:var(--text-low);}

  /* ============ FAQ ============ */
  .faq-list{max-width:860px;margin:36px auto 0;display:grid;gap:14px;}
  .faq-item{
    border-radius:var(--radius-card);
    border:1px solid var(--stroke);
    background:rgba(255,255,255,.03);
    overflow:hidden;
    transition:background .22s ease,border-color .22s ease;
  }
  .faq-item:hover{background:rgba(255,255,255,.055);}
  .faq-item.is-open{border-color:var(--stroke-strong);background:var(--bg-2);}
  .faq-q{
    width:100%;
    display:flex;align-items:center;gap:14px;
    padding:18px 20px;
    background:none;border:none;
    color:var(--text-hi);
    font-size:16.5px;font-weight:600;
    text-align:left;
    line-height:1.6;
  }
  .faq-idx{
    font-family:"DIN Alternate",ui-monospace,monospace;
    font-size:13px;color:var(--accent);
    font-variant-numeric:tabular-nums;
    flex:0 0 auto;
  }
  .faq-q span{flex:1 1 auto;}
  .faq-icon{
    position:relative;
    width:20px;height:20px;flex:0 0 auto;
  }
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;left:50%;top:50%;
    background:var(--text-low);
    transform:translate(-50%,-50%);
    transition:transform .28s ease,background .28s ease;
  }
  .faq-icon::before{width:14px;height:1.6px;}
  .faq-icon::after{width:1.6px;height:14px;}
  .faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
  .faq-item.is-open .faq-icon::before{background:var(--accent);}
  .faq-a{
    display:grid;
    grid-template-rows:0fr;
    transition:grid-template-rows .34s ease;
  }
  .faq-item.is-open .faq-a{grid-template-rows:1fr;}
  .faq-a > div{overflow:hidden;}
  .faq-a p{
    padding:0 20px 22px 54px;
    font-size:15px;
    color:var(--text-mid);
  }
  @media (max-width:520px){
    .faq-a p{padding-left:20px;}
    .faq-q{font-size:15.5px;}
  }

  /* ============ CTA ============ */
  .cta-card{
    position:relative;
    border-radius:24px;
    padding:38px 26px;
    overflow:hidden;
  }
  @media (min-width:1024px){.cta-card{padding:56px 56px;}}
  .cta-card::after{
    content:"";
    position:absolute;inset:0;
    background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
    background-size:32px 32px;
    -webkit-mask-image:radial-gradient(60% 80% at 80% 20%,#000,transparent 76%);
    mask-image:radial-gradient(60% 80% at 80% 20%,#000,transparent 76%);
    pointer-events:none;
  }
  .cta-inner{position:relative;z-index:1;display:grid;gap:24px;}
  @media (min-width:900px){
    .cta-inner{grid-template-columns:1.4fr .9fr;align-items:center;gap:40px;}
  }
  .cta-inner h2{font-size:clamp(22px,3vw,34px);}
  .cta-inner p{margin-top:14px;font-size:15.5px;color:var(--text-mid);max-width:560px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
  @media (min-width:900px){.cta-actions{justify-content:flex-end;}}
  .cta-note{
    margin-top:22px;padding-top:18px;
    border-top:1px solid var(--stroke);
    display:flex;flex-wrap:wrap;gap:10px 22px;
    font-size:13px;color:var(--text-low);
    position:relative;z-index:1;
  }
  .cta-note span{display:inline-flex;align-items:center;gap:7px;}
  .cta-note svg{width:15px;height:15px;color:var(--accent);}

  /* ============ 浮动 CTA ============ */
  .float-cta{
    position:fixed;
    z-index:70;
    right:18px;bottom:18px;
    display:none;
    align-items:center;
    gap:10px;
    opacity:0;
    transform:translateY(12px);
    transition:opacity .3s ease,transform .3s ease;
    pointer-events:none;
  }
  .float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
  @media (min-width:768px){.float-cta{display:flex;}}
  .to-top{
    width:44px;height:44px;
    display:grid;place-items:center;
    border-radius:50%;
    border:1px solid var(--stroke-strong);
    background:rgba(11,20,40,.9);
    backdrop-filter:blur(12px);
    color:var(--text-hi);
  }
  .to-top:hover{border-color:var(--accent);color:var(--accent);}
  .float-bar{
    position:fixed;
    left:0;right:0;bottom:0;
    z-index:70;
    display:flex;
    gap:10px;
    padding:12px 16px calc(12px + env(safe-area-inset-bottom,0px));
    background:rgba(7,13,28,.92);
    backdrop-filter:blur(14px);
    border-top:1px solid var(--stroke);
  }
  .float-bar .btn-primary{flex:2 1 0;}
  .float-bar .btn-ghost{flex:1 1 0;padding:0 10px;}
  @media (min-width:768px){.float-bar{display:none;}}
  @media (max-width:767px){body{padding-bottom:78px;}}

  /* ============ 页脚 ============ */
  .site-footer{
    margin-top:56px;
    border-top:1px solid var(--stroke);
    background:var(--bg-1);
    padding:48px 0 26px;
    position:relative;
    z-index:1;
  }
  .footer-grid{display:grid;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 1.1fr;gap:40px;}}
  .footer-brand p{margin:16px 0 18px;font-size:14px;color:var(--text-low);max-width:320px;}
  .social-row{display:flex;gap:10px;}
  .social-row a{
    width:38px;height:38px;
    display:grid;place-items:center;
    border-radius:10px;
    border:1px solid var(--stroke);
    color:var(--text-low);
    transition:border-color .22s ease,color .22s ease,background .22s ease;
  }
  .social-row a:hover{border-color:var(--accent);color:var(--accent);background:rgba(53,224,161,.08);}
  .social-row svg{width:18px;height:18px;}
  .footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text-hi);}
  .footer-col ul{display:grid;gap:11px;}
  .footer-col a{font-size:14px;color:var(--text-low);}
  .footer-col a:hover{color:var(--accent);}
  .footer-contact li{
    display:flex;align-items:flex-start;gap:9px;
    font-size:14px;color:var(--text-low);
  }
  .footer-contact svg{width:16px;height:16px;flex:0 0 auto;margin-top:4px;color:var(--brand);}
  .footer-bottom{
    margin-top:34px;padding-top:20px;
    border-top:1px solid var(--stroke);
    display:flex;flex-wrap:wrap;gap:10px 20px;
    justify-content:space-between;
    font-size:13px;color:var(--text-low);
  }
  .footer-bottom a{color:var(--text-low);}
  .footer-bottom a:hover{color:var(--accent);}

/* roulang page: category2 */
:root{
    --bg-0:#04070F; --bg-1:#070D1C; --bg-2:#0B1428;
    --brand:#2D6BFF; --brand-deep:#1740C4; --brand-glow:rgba(45,107,255,.45);
    --accent:#35E0A1; --warn:#FFB020;
    --text-hi:#EAF0FF; --text-mid:#C3CFE6; --text-low:#8496B8;
    --stroke:rgba(255,255,255,.10); --stroke-strong:rgba(255,255,255,.18);
    --radius-card:18px; --radius-btn:12px; --radius-pill:999px;
    --shadow-card:0 18px 48px -24px rgba(0,0,0,.85);
    --shadow-glow:0 0 0 1px rgba(45,107,255,.35), 0 12px 40px -12px var(--brand-glow);
    --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  }

  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--bg-0);
    color:var(--text-mid);
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
    overflow-x:hidden;
  }
  body::before{
    content:"";
    position:fixed; inset:0; z-index:-1; pointer-events:none;
    background:
      radial-gradient(620px 440px at 88% -6%, rgba(45,107,255,.16), transparent 70%),
      radial-gradient(560px 400px at -8% 32%, rgba(53,224,161,.09), transparent 72%);
  }
  img{max-width:100%;display:block}
  a{color:var(--text-hi);text-decoration:none;transition:color .25s ease}
  a:hover{color:var(--accent)}
  button{font-family:inherit}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:8px}
  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";font-family:"DIN Alternate","Bebas Neue",ui-monospace,SFMono-Regular,Menlo,monospace}

  .container{
    width:100%;
    max-width:1200px !important;
    margin-left:auto !important;
    margin-right:auto !important;
    padding-left:20px;
    padding-right:20px;
  }
  @media (min-width:768px){ .container{padding-left:32px;padding-right:32px} }
  @media (min-width:1024px){ .container{padding-left:40px;padding-right:40px} }

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky; top:0; z-index:60;
    background:transparent;
    border-bottom:1px solid transparent;
    transition:background .3s ease, border-color .3s ease, backdrop-filter .3s ease;
  }
  .site-header.scrolled{
    background:rgba(7,13,28,.88);
    backdrop-filter:blur(16px) saturate(140%);
    -webkit-backdrop-filter:blur(16px) saturate(140%);
    border-bottom-color:var(--stroke);
  }
  .header-inner{
    display:flex; align-items:center; justify-content:space-between;
    gap:20px; min-height:72px;
  }
  .logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
  .logo-mark{
    width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
    background:linear-gradient(135deg,var(--brand),#4E8CFF);
    box-shadow:0 10px 24px -12px var(--brand-glow);
  }
  .logo-mark svg{width:19px;height:19px;display:block}
  .logo-text{font-weight:700;font-size:18px;color:var(--text-hi);letter-spacing:-.01em;line-height:1.1}
  .logo-text em{font-style:normal;color:var(--accent)}
  .nav-desktop{display:flex;align-items:center;gap:4px}
  .nav-desktop a{
    position:relative;padding:9px 13px;border-radius:10px;
    font-size:14px;color:var(--text-mid);white-space:nowrap;
  }
  .nav-desktop a::after{
    content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;border-radius:2px;
    background:linear-gradient(90deg,var(--brand),var(--accent));
    transform:scaleX(0);transform-origin:left;transition:transform .3s ease;
  }
  .nav-desktop a:hover{color:var(--text-hi);background:rgba(255,255,255,.05)}
  .nav-desktop a:hover::after,
  .nav-desktop a.active::after{transform:scaleX(1)}
  .nav-desktop a.active{color:var(--text-hi);background:rgba(45,107,255,.12)}

  .header-right{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .status-badge{
    display:inline-flex;align-items:center;gap:8px;
    padding:6px 12px;border-radius:var(--radius-pill);
    background:rgba(255,255,255,.05);border:1px solid var(--stroke);
    font-size:12px;color:var(--text-mid);white-space:nowrap;
  }
  .status-badge .dot{
    width:7px;height:7px;border-radius:50%;background:var(--accent);
    box-shadow:0 0 0 4px rgba(53,224,161,.16);
    animation:breathe 2.2s ease-in-out infinite;
  }
  @keyframes breathe{0%,100%{opacity:1}50%{opacity:.35}}
  .countdown{font-size:12px;color:var(--warn);white-space:nowrap;letter-spacing:.02em}
  .countdown b{font-weight:700;margin-left:4px;font-variant-numeric:tabular-nums}
  .countdown i{font-style:normal;opacity:.45;padding:0 1px}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 20px;border-radius:var(--radius-btn);
    font-size:14px;font-weight:600;line-height:1;white-space:nowrap;
    border:1px solid transparent;cursor:pointer;
    transition:transform .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease, filter .22s ease;
  }
  .btn:hover{transform:translateY(-1px)}
  .btn:active{transform:translateY(1px)}
  .btn-primary{
    background:linear-gradient(135deg,var(--brand),#4E8CFF);
    color:#fff;box-shadow:var(--shadow-glow);
  }
  .btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 0 1px rgba(45,107,255,.5), 0 18px 48px -12px var(--brand-glow);color:#fff}
  .btn-ghost{
    background:transparent;border-color:var(--stroke-strong);color:var(--text-hi);
  }
  .btn-ghost:hover{background:rgba(255,255,255,.06);border-color:var(--accent);color:var(--text-hi)}
  .btn-sm{height:38px;padding:0 16px;font-size:13px}
  .btn-lg{height:52px;padding:0 26px;font-size:15px}

  /* ============ Hero 横幅 ============ */
  .hero-banner{
    position:relative;overflow:hidden;
    border-bottom:1px solid var(--stroke);
    background:
      linear-gradient(100deg, rgba(4,7,15,.92) 0%, rgba(4,7,15,.78) 52%, rgba(4,7,15,.7) 100%),
      url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  }
  .hero-banner::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:
      linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
    background-size:32px 32px;
    mask-image:linear-gradient(180deg,#000,transparent 92%);
    -webkit-mask-image:linear-gradient(180deg,#000,transparent 92%);
  }
  .hero-inner{position:relative;z-index:2;padding:34px 0 44px}
  @media (min-width:768px){ .hero-inner{padding:44px 0 58px} }
  @media (min-width:1024px){ .hero-inner{padding:52px 0 66px} }

  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-low);margin-bottom:18px}
  .breadcrumb a{color:var(--text-low)}
  .breadcrumb a:hover{color:var(--accent)}
  .breadcrumb span.sep{opacity:.5}
  .breadcrumb .current{color:var(--text-mid)}

  .hero-kicker{
    display:inline-flex;align-items:center;gap:8px;
    padding:6px 14px;border-radius:var(--radius-pill);
    background:rgba(53,224,161,.12);border:1px solid rgba(53,224,161,.3);
    color:var(--accent);font-size:12px;letter-spacing:.04em;margin-bottom:16px;
  }
  .hero-title{
    font-size:clamp(28px,4.4vw,46px);
    font-weight:800;line-height:1.16;letter-spacing:-.02em;
    color:var(--text-hi);margin:0 0 14px;max-width:820px;
  }
  .hero-lead{font-size:16px;line-height:1.85;color:var(--text-mid);max-width:660px;margin:0 0 24px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px}

  /* ============ 板块通用 ============ */
  .section{padding:56px 0}
  @media (min-width:768px){ .section{padding:76px 0} }
  @media (min-width:1024px){ .section{padding:96px 0} }
  .section-alt{background:var(--bg-1);border-top:1px solid var(--stroke);border-bottom:1px solid var(--stroke)}
  section[id]{scroll-margin-top:96px}

  .eyebrow{
    display:flex;align-items:center;gap:10px;
    font-size:12px;letter-spacing:.18em;color:var(--accent);
    text-transform:uppercase;margin-bottom:12px;
  }
  .eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--accent),transparent)}
  .sec-title{
    font-size:clamp(23px,3.1vw,36px);font-weight:700;line-height:1.28;
    letter-spacing:-.01em;color:var(--text-hi);margin:0 0 12px;
  }
  .sec-lead{font-size:15px;line-height:1.85;color:var(--text-low);max-width:680px;margin:0 0 34px}
  .sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:8px}

  /* ============ 功能卡片网格 ============ */
  .guide-grid{display:grid;grid-template-columns:1fr;gap:20px}
  @media (min-width:640px){ .guide-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px} }
  @media (min-width:1024px){ .guide-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px} }

  .g-card{
    position:relative;overflow:hidden;border-radius:var(--radius-card);
    background:rgba(255,255,255,.045);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    box-shadow:var(--shadow-card);
    transition:transform .35s ease, box-shadow .35s ease;
    display:flex;flex-direction:column;
  }
  .g-card::before{
    content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;pointer-events:none;
    background:linear-gradient(140deg,rgba(255,255,255,.34),rgba(255,255,255,.04) 46%,rgba(255,255,255,.14));
    -webkit-mask:linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite:xor;
    mask:linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    mask-composite:exclude;
    transition:background .35s ease;
  }
  .g-card:hover{transform:translateY(-4px);box-shadow:0 26px 56px -26px rgba(0,0,0,.9)}
  .g-card:hover::before{background:linear-gradient(140deg,rgba(53,224,161,.5),rgba(255,255,255,.06) 52%,rgba(45,107,255,.45))}
  .g-thumb{
    position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-2);
    border-bottom:1px solid var(--stroke);
  }
  .g-thumb img{
    width:100%;height:100%;object-fit:cover;
    transition:transform 1.2s cubic-bezier(.2,.6,.2,1);
  }
  .g-card:hover .g-thumb img{transform:scale(1.03)}
  .g-thumb::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(4,7,15,.1),rgba(4,7,15,.55));
  }
  .g-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
  .tag{
    display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
    padding:4px 11px;border-radius:var(--radius-pill);
    font-size:12px;letter-spacing:.04em;
    background:rgba(53,224,161,.12);color:var(--accent);border:1px solid rgba(53,224,161,.25);
  }
  .g-title{font-size:19px;font-weight:600;line-height:1.45;color:var(--text-hi);margin:0}
  .g-desc{font-size:14px;line-height:1.8;color:var(--text-low);margin:0}
  .arrow-link{
    display:inline-flex;align-items:center;gap:6px;margin-top:auto;padding-top:8px;
    font-size:13px;color:var(--text-mid);
  }
  .arrow-link svg{width:16px;height:16px;transition:transform .28s ease}
  .arrow-link:hover{color:var(--accent)}
  .arrow-link:hover svg{transform:translateX(3px)}

  /* ============ 步骤 ============ */
  .step-grid{display:grid;grid-template-columns:1fr;gap:18px}
  @media (min-width:640px){ .step-grid{grid-template-columns:repeat(2,minmax(0,1fr))} }
  @media (min-width:1024px){ .step-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:22px} }
  .step{
    position:relative;padding:24px 22px;border-radius:var(--radius-card);
    background:var(--bg-2);border:1px solid var(--stroke);
    transition:border-color .3s ease, transform .3s ease;
  }
  .step:hover{border-color:rgba(53,224,161,.4);transform:translateY(-3px)}
  .step-num{
    font-size:26px;font-weight:800;line-height:1;color:transparent;
    background:linear-gradient(135deg,var(--brand),var(--accent));
    -webkit-background-clip:text;background-clip:text;margin-bottom:14px;display:inline-block;
  }
  .step h3{font-size:17px;font-weight:600;color:var(--text-hi);margin:0 0 8px}
  .step p{font-size:14px;line-height:1.8;color:var(--text-low);margin:0}
  .step-line{
    position:absolute;left:22px;right:22px;top:0;height:2px;border-radius:2px;
    background:linear-gradient(90deg,var(--brand),var(--accent),transparent);
    opacity:.55;
  }

  /* ============ 场景清单 ============ */
  .scene-wrap{
    border-radius:var(--radius-card);
    background:rgba(255,255,255,.04);
    border:1px solid var(--stroke);
    overflow:hidden;
  }
  .scene-item{
    display:grid;grid-template-columns:auto 1fr;gap:18px;
    padding:22px 22px;border-bottom:1px solid var(--stroke);
    transition:background .3s ease;
  }
  .scene-item:last-child{border-bottom:none}
  .scene-item:hover{background:rgba(255,255,255,.04)}
  .scene-idx{
    font-size:14px;font-weight:700;color:var(--accent);
    padding-top:3px;min-width:28px;
  }
  .scene-item h3{font-size:17px;font-weight:600;color:var(--text-hi);margin:0 0 6px}
  .scene-item p{font-size:14px;line-height:1.8;color:var(--text-low);margin:0}
  @media (max-width:520px){
    .scene-item{grid-template-columns:1fr;gap:6px}
    .scene-idx{padding-top:0}
  }

  /* ============ 数据统计 ============ */
  .stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
  @media (min-width:1024px){ .stat-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:22px} }
  .stat{
    padding:24px 20px;border-radius:var(--radius-card);
    background:rgba(255,255,255,.035);border:1px solid var(--stroke);
    transition:border-color .3s ease, background .3s ease;
  }
  .stat:hover{border-color:var(--stroke-strong);background:rgba(255,255,255,.055)}
  .stat-num{
    font-size:clamp(26px,3.4vw,38px);font-weight:800;line-height:1.1;
    color:transparent;background:linear-gradient(135deg,#EAF0FF,var(--accent));
    -webkit-background-clip:text;background-clip:text;margin-bottom:8px;
  }
  .stat-label{font-size:13px;color:var(--text-low);line-height:1.7;margin:0}
  .stat .tag{margin-top:12px}

  /* ============ FAQ ============ */
  .faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
  .faq-item{
    border-radius:14px;background:rgba(255,255,255,.035);
    border:1px solid var(--stroke);overflow:hidden;transition:border-color .3s ease, background .3s ease;
  }
  .faq-item:hover{background:rgba(255,255,255,.055)}
  .faq-item.open{border-color:rgba(53,224,161,.35)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 20px;background:transparent;border:none;cursor:pointer;text-align:left;
    color:var(--text-hi);font-size:16px;font-weight:600;line-height:1.6;
  }
  .faq-q .q-left{display:flex;align-items:center;gap:12px}
  .faq-q .q-idx{
    font-size:13px;font-weight:700;color:var(--accent);
    padding-left:10px;border-left:2px solid var(--accent);line-height:1.2;
  }
  .faq-icon{
    flex-shrink:0;width:24px;height:24px;border-radius:50%;
    border:1px solid var(--stroke-strong);display:grid;place-items:center;
    transition:transform .3s ease, border-color .3s ease;
  }
  .faq-icon svg{width:12px;height:12px}
  .faq-item.open .faq-icon{transform:rotate(45deg);border-color:var(--accent)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .38s ease}
  .faq-a p{
    margin:0;padding:0 20px 20px 60px;
    font-size:15px;line-height:1.85;color:var(--text-mid);
  }
  @media (max-width:520px){ .faq-a p{padding-left:20px} }

  /* ============ CTA ============ */
  .cta-band{
    position:relative;overflow:hidden;border-radius:24px;
    padding:38px 26px;
    background:linear-gradient(120deg,rgba(45,107,255,.18),rgba(11,20,40,.9) 55%);
    border:1px solid var(--stroke-strong);
    box-shadow:var(--shadow-card);
  }
  .cta-band::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:
      linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
    background-size:32px 32px;opacity:.7;
  }
  @media (min-width:768px){ .cta-band{padding:52px 48px} }
  .cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px}
  .cta-band h2{
    font-size:clamp(22px,3vw,32px);font-weight:700;line-height:1.3;
    color:var(--text-hi);margin:0 0 10px;letter-spacing:-.01em;
  }
  .cta-band p{margin:0;font-size:15px;color:var(--text-mid);max-width:520px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px}

  /* ============ 页脚 ============ */
  .site-footer{
    border-top:1px solid var(--stroke);
    background:var(--bg-1);
    padding:56px 0 26px;
    margin-top:0;
  }
  .footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
  @media (min-width:640px){ .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px} }
  .footer-brand p{font-size:14px;line-height:1.85;color:var(--text-low);margin:16px 0 18px;max-width:320px}
  .social-row{display:flex;gap:10px}
  .social-row a{
    width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
    border:1px solid var(--stroke);background:rgba(255,255,255,.04);
    color:var(--text-mid);transition:border-color .25s ease, color .25s ease, transform .25s ease;
  }
  .social-row a svg{width:18px;height:18px}
  .social-row a:hover{color:var(--accent);border-color:rgba(53,224,161,.45);transform:translateY(-2px)}
  .footer-col h4{font-size:14px;font-weight:600;color:var(--text-hi);margin:0 0 16px;letter-spacing:.02em}
  .footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
  .footer-col ul li a{font-size:14px;color:var(--text-low)}
  .footer-col ul li a:hover{color:var(--accent)}
  .footer-contact li{
    display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-low);
  }
  .footer-contact li svg{width:17px;height:17px;flex-shrink:0;color:var(--text-mid)}
  .footer-bottom{
    margin-top:40px;padding-top:20px;border-top:1px solid var(--stroke);
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
    font-size:13px;color:var(--text-low);
  }
  .footer-bottom p{margin:0}
  .footer-bottom .footer-links{display:flex;flex-wrap:wrap;gap:16px}
  .footer-bottom .footer-links a{font-size:13px;color:var(--text-low)}
  .footer-bottom .footer-links a:hover{color:var(--accent)}

  /* ============ 浮动 CTA ============ */
  .float-cta{
    position:fixed;right:24px;bottom:24px;z-index:70;
    display:flex;align-items:center;gap:10px;
    opacity:0;pointer-events:none;transform:translateY(10px);
    transition:opacity .35s ease, transform .35s ease;
  }
  .float-cta.show{opacity:1;pointer-events:auto;transform:none}
  .to-top{
    width:44px;height:44px;border-radius:50%;
    display:grid;place-items:center;cursor:pointer;
    background:var(--bg-2);border:1px solid var(--stroke-strong);color:var(--text-mid);
    box-shadow:0 12px 30px -14px rgba(0,0,0,.9);
    transition:border-color .25s ease, color .25s ease, transform .25s ease;
  }
  .to-top svg{width:18px;height:18px}
  .to-top:hover{color:var(--accent);border-color:rgba(53,224,161,.5);transform:translateY(-2px)}

  .mobile-bar{
    position:fixed;left:0;right:0;bottom:0;z-index:75;
    display:none;gap:10px;padding:10px 14px 12px;
    background:rgba(7,13,28,.92);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    border-top:1px solid var(--stroke);
    grid-template-columns:2fr 1fr;
  }
  .mobile-bar .btn{height:46px;padding:0 12px;font-size:14px}

  @media (max-width:1023px){
    .nav-desktop{display:none}
    .countdown{display:none}
    #menuBtn{display:inline-flex !important}
    .float-cta{display:none}
  }
  @media (min-width:1024px){
    #menuBtn{display:none !important}
    #mobileNav{display:none !important}
  }
  @media (max-width:767px){
    body{padding-bottom:78px}
    .mobile-bar{display:grid}
    .header-inner{min-height:66px}
    .status-badge{display:none}
    .logo-text{font-size:16px}
    .btn-lg{height:48px;padding:0 20px;font-size:14px}
    .cta-inner{flex-direction:column;align-items:flex-start}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation-duration:.001ms !important;transition-duration:.001ms !important}
    html{scroll-behavior:auto}
  }