/* roulang page: index */
:root{
  --bg:#070B14;
  --surface:#0E1524;
  --surface-2:#0B1220;
  --glass:rgba(20,28,44,.62);
  --glass-strong:rgba(14,21,36,.88);
  --primary:#2F5BFF;
  --primary-soft:rgba(47,91,255,.18);
  --mint:#4BE3C0;
  --lava:#FF7A45;
  --text:#EAF0FF;
  --text-2:#9AA9C4;
  --text-3:#6B7A96;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --danger:#FF5A5F;
  --r-card:18px;
  --r-btn:12px;
  --r-pill:999px;
  --r-img:16px;
  --shadow-card:0 20px 60px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.10);
  --shadow-btn:0 0 0 1px rgba(47,91,255,.55),0 10px 34px rgba(47,91,255,.38);
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --sp-1:8px;--sp-2:16px;--sp-3:24px;--sp-4:32px;--sp-5:48px;--sp-6:72px;--sp-7:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--mint);text-decoration:none;transition:color .12s ease-out;}
a:hover{color:var(--text);}
p{margin:0;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea{font:inherit;}
:focus-visible{outline:2px solid var(--mint);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(47,91,255,.45);color:#fff;}
.grid-container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}
.grid-x{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:24px;}
.grid-x>.cell{grid-column:span 12;min-width:0;width:auto;padding:0;margin:0;}
@media (min-width:640px){
  .grid-x>.cell.medium-4{grid-column:span 4;}
  .grid-x>.cell.medium-6{grid-column:span 6;}
}
@media (min-width:1024px){
  .grid-x>.cell.large-3{grid-column:span 3;}
  .grid-x>.cell.large-4{grid-column:span 4;}
  .grid-x>.cell.large-5{grid-column:span 5;}
  .grid-x>.cell.large-6{grid-column:span 6;}
  .grid-x>.cell.large-7{grid-column:span 7;}
  .grid-x>.cell.large-8{grid-column:span 8;}
}
.section{position:relative;padding:72px 0;}
.section-lg{padding:88px 0;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--mint);text-transform:uppercase;}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--mint);}
.section-head{max-width:720px;margin-bottom:48px;}
.section-head h2{font-size:32px;margin-top:16px;letter-spacing:-.01em;}
.section-head p{margin-top:16px;color:var(--text-2);font-size:16px;}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;max-width:none;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  transition:transform .12s ease-out,box-shadow .18s ease-out,background .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.btn:hover{transform:translateY(-2px);}
.btn:active{transform:translateY(0);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px;}
.btn-lava{background:linear-gradient(135deg,#FF8F5E,#FF6A30);color:#1B0B03;box-shadow:0 0 0 1px rgba(255,122,69,.5),0 10px 30px rgba(255,122,69,.3);}
.btn-lava:hover{color:#1B0B03;box-shadow:0 0 0 1px rgba(255,122,69,.8),0 14px 38px rgba(255,122,69,.45);}
.btn-primary{background:linear-gradient(135deg,#3C6BFF,#2447E0);color:#fff;box-shadow:var(--shadow-btn);}
.btn-primary:hover{color:#fff;box-shadow:0 0 0 1px rgba(47,91,255,.85),0 14px 40px rgba(47,91,255,.5);}
.btn-ghost{background:rgba(20,28,44,.6);color:var(--text);border:1px solid var(--line-strong);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);}
.btn-ghost:hover{color:var(--text);border-color:rgba(47,91,255,.6);box-shadow:0 8px 26px rgba(47,91,255,.22);}
.btn-block{width:100%;}
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,11,20,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .2s ease-out,border-color .2s ease-out;
}
.site-header.is-scrolled{background:rgba(7,11,20,.92);border-bottom-color:var(--line);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);font-weight:700;min-height:44px;}
.brand:hover{color:var(--text);}
.brand-dot{width:9px;height:9px;border-radius:50%;background:var(--mint);box-shadow:0 0 12px rgba(75,227,192,.9);flex:0 0 auto;}
.brand-name{font-size:18px;letter-spacing:.02em;color:var(--text);}
.brand-tag{
  font-size:11px;padding:3px 10px;border-radius:var(--r-pill);
  border:1px solid rgba(75,227,192,.35);background:rgba(75,227,192,.08);
  color:var(--mint);font-family:var(--mono);letter-spacing:.04em;
}
.nav-links{display:flex;align-items:center;gap:24px;}
.nav-links a{position:relative;font-size:14px;color:var(--text-2);padding:6px 0;min-height:44px;display:inline-flex;align-items:center;}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:6px;height:2px;background:var(--primary);
  transform:scaleX(0);transform-origin:left;transition:transform .18s ease-out;border-radius:2px;
}
.nav-links a:hover{color:var(--text);}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--text);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:12px;}
.status-pill{
  display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:var(--r-pill);
  border:1px solid rgba(75,227,192,.35);background:rgba(75,227,192,.08);
  color:var(--mint);font-size:12px;font-family:var(--mono);
}
.status-pill .dot{
  width:6px;height:6px;border-radius:50%;background:var(--mint);
  animation:pulse 2.2s ease-out infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(75,227,192,.65);}
  70%{box-shadow:0 0 0 8px rgba(75,227,192,0);}
  100%{box-shadow:0 0 0 0 rgba(75,227,192,0);}
}
.countdown-pill{
  font-family:var(--mono);font-size:12px;color:var(--text-2);
  border:1px solid var(--line);border-radius:var(--r-pill);
  padding:6px 12px;background:rgba(20,28,44,.5);white-space:nowrap;
}
.countdown-pill b{color:var(--lava);font-weight:600;margin-left:4px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-strong);background:rgba(20,28,44,.6);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform .2s ease-out,opacity .2s ease-out;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.nav-drawer{
  position:fixed;left:0;right:0;top:64px;z-index:70;
  max-height:calc(100vh - 64px);overflow-y:auto;
  padding:24px;
  background:rgba(7,11,20,.98);
  border-bottom:1px solid var(--line);
  display:flex;flex-direction:column;gap:2px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .22s ease-out,transform .22s ease-out,visibility .22s;
}
.nav-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.nav-drawer a{padding:14px 4px;font-size:16px;color:var(--text-2);border-bottom:1px solid var(--line);display:flex;align-items:center;min-height:44px;}
.nav-drawer a:hover{color:var(--mint);}
.nav-drawer .btn{margin-top:20px;border-bottom:0;color:#1B0B03;justify-content:center;}
.nav-drawer .btn:hover{color:#1B0B03;}
@media (max-width:1023px){
  .nav-links{display:none;}
  .status-pill,.countdown-pill{display:none;}
  .nav-toggle{display:flex;}
  .header-actions .btn-sm{display:none;}
}
@media (min-width:1024px){
  .nav-drawer{display:none;}
}
.hero{position:relative;overflow:hidden;padding:96px 0;background:#03060F;}
.hero-bg{position:absolute;inset:0;background-image:url("/assets/images/backpic/back-2.png");background-size:cover;background-position:center;opacity:.36;}
.hero-lines{
  position:absolute;inset:0;z-index:1;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;opacity:.5;
  -webkit-mask-image:radial-gradient(circle at 50% 35%,#000 10%,transparent 72%);
  mask-image:radial-gradient(circle at 50% 35%,#000 10%,transparent 72%);
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    radial-gradient(620px 420px at 82% 18%,rgba(75,227,192,.14),transparent 70%),
    radial-gradient(720px 520px at 8% 92%,rgba(47,91,255,.20),transparent 72%),
    linear-gradient(180deg,rgba(7,11,20,.62),var(--bg));
}
.hero>.grid-container{position:relative;z-index:2;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(75,227,192,.3);background:rgba(75,227,192,.08);
  color:var(--mint);font-size:12px;font-family:var(--mono);letter-spacing:.04em;
}
.hero-title{font-size:42px;line-height:1.25;font-weight:800;letter-spacing:-.015em;margin-top:24px;max-width:620px;}
.hero-sub{margin-top:16px;font-size:17px;line-height:1.8;color:var(--text-2);max-width:560px;}
.hero-actions{display:flex;gap:16px;margin-top:32px;flex-wrap:wrap;}
.hero-stats{display:flex;gap:32px;margin-top:40px;flex-wrap:wrap;}
.hero-stats li{min-width:88px;}
.hero-stats li strong{display:block;font-family:var(--mono);font-size:26px;font-weight:600;color:var(--text);letter-spacing:-.01em;}
.hero-stats li span{font-size:13px;color:var(--text-3);}
.hero-visual{position:relative;}
.hero-frame{border-radius:20px;overflow:hidden;border:1px solid var(--line-strong);background:var(--surface);box-shadow:var(--shadow-card);}
.hero-frame img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.hero-float{
  position:absolute;left:-24px;bottom:-40px;max-width:300px;padding:20px;
  border-radius:var(--r-img);border:1px solid var(--line-strong);
  background:var(--glass-strong);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
}
.hero-float .tag{
  display:inline-block;font-size:11px;font-family:var(--mono);letter-spacing:.08em;
  color:var(--mint);padding:3px 10px;border-radius:var(--r-pill);
  border:1px solid rgba(75,227,192,.32);background:rgba(75,227,192,.08);
}
.hero-float p{margin-top:12px;font-size:14px;line-height:1.7;color:var(--text-2);}
.step-card{
  position:relative;height:100%;padding:32px 28px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:border-color .18s ease-out,transform .18s ease-out;
}
.step-card:hover{border-color:rgba(47,91,255,.45);transform:translateY(-3px);}
.step-num{
  display:block;font-family:var(--mono);font-size:48px;line-height:1;font-weight:700;
  color:transparent;-webkit-text-stroke:1px rgba(75,227,192,.55);margin-bottom:18px;
}
.step-card h3{font-size:18px;}
.step-card p{margin-top:12px;font-size:15px;line-height:1.75;color:var(--text-2);}
.step-tag{
  display:inline-block;margin-top:20px;padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;font-family:var(--mono);color:var(--mint);
  background:rgba(75,227,192,.08);border:1px solid rgba(75,227,192,.25);
}
.steps-grid>.cell{position:relative;}
@media (min-width:640px){
  .steps-grid>.cell:nth-child(2){margin-top:24px;}
  .steps-grid>.cell:nth-child(3){margin-top:48px;}
}
@media (max-width:639px){
  .steps-grid>.cell:nth-child(1) .step-card{border-left:3px solid var(--primary);}
}
.proof-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-bottom:72px;}
.proof-row:last-of-type{margin-bottom:56px;}
.proof-row.reverse .proof-media{order:2;}
.proof-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line);box-shadow:var(--shadow-card);}
.proof-text h3{font-size:24px;margin-top:16px;}
.proof-text p{margin-top:16px;color:var(--text-2);font-size:15px;line-height:1.8;}
.proof-list{margin-top:24px;display:flex;flex-direction:column;gap:12px;}
.proof-list li{display:flex;gap:12px;font-size:15px;color:var(--text-2);line-height:1.7;}
.proof-list li::before{content:"";flex:0 0 auto;width:6px;height:6px;margin-top:9px;border-radius:2px;background:var(--mint);}
.stat-band{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;
  padding:32px;border-radius:var(--r-card);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(47,91,255,.12),rgba(20,28,44,.42));
  box-shadow:var(--shadow-card);
}
.stat-band .stat strong{display:block;font-family:var(--mono);font-size:34px;font-weight:600;color:var(--mint);line-height:1.1;}
.stat-band .stat span{display:block;margin-top:8px;font-size:14px;color:var(--text-2);}
.stat-band .stat::after{content:"";display:block;width:36px;height:2px;margin-top:16px;border-radius:2px;background:rgba(75,227,192,.5);}
.post-card{
  display:flex;flex-direction:column;height:100%;border-radius:var(--r-card);overflow:hidden;
  background:var(--glass);border:1px solid var(--line);box-shadow:var(--shadow-card);color:var(--text);
  transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.post-card:hover{
  transform:translateY(-3px);border-color:rgba(47,91,255,.5);color:var(--text);
  box-shadow:0 24px 60px rgba(0,0,0,.55),0 0 0 1px rgba(47,91,255,.3);
}
.post-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--surface);}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease-out;}
.post-card:hover .post-thumb img{transform:scale(1.04);}
.post-cat{
  position:absolute;left:12px;top:12px;padding:4px 10px;border-radius:var(--r-pill);
  font-size:12px;color:var(--mint);background:rgba(7,11,20,.75);
  border:1px solid rgba(75,227,192,.35);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}
.post-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.post-title{
  font-size:17px;line-height:1.5;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .12s ease-out;
}
.post-card:hover .post-title{color:var(--mint);}
.post-excerpt{
  margin-top:10px;font-size:14px;line-height:1.7;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid var(--line);font-family:var(--mono);font-size:12px;color:var(--text-3);
}
.post-meta span{color:var(--mint);}
.empty-state{grid-column:span 12;}
.empty-card{
  border:1px dashed var(--line-strong);border-radius:var(--r-card);
  background:rgba(14,21,36,.42);padding:48px 24px;text-align:center;
  color:var(--text-2);font-size:15px;
}
.faq-side{position:relative;}
.faq-side h2{font-size:30px;margin-top:16px;}
.faq-side p{margin-top:16px;font-size:15px;color:var(--text-2);line-height:1.8;}
.faq-side .btn{margin-top:24px;}
@media (min-width:1024px){
  .faq-side{position:sticky;top:96px;}
}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);transition:border-color .18s ease-out;}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;color:var(--text);min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"⌄";font-family:var(--mono);font-size:20px;line-height:1;color:var(--mint);
  transition:transform .22s ease-out;flex:0 0 auto;
}
.faq-item[open] summary::after{transform:rotate(180deg);}
.faq-item[open]{border-left:3px solid var(--primary);padding-left:16px;}
.faq-item p{padding:0 0 20px;font-size:15px;line-height:1.8;color:var(--text-2);max-width:640px;}
.cta-panel{
  position:relative;overflow:hidden;border-radius:24px;padding:48px;
  background:linear-gradient(140deg,rgba(47,91,255,.2),rgba(20,28,44,.72) 46%,rgba(75,227,192,.12));
  border:1px solid rgba(47,91,255,.35);
  box-shadow:0 0 0 1px rgba(47,91,255,.15),0 40px 90px rgba(0,0,0,.55);
}
.cta-panel::before{
  content:"";position:absolute;right:-140px;top:-160px;width:440px;height:440px;
  background:radial-gradient(circle,rgba(75,227,192,.28),transparent 70%);
  filter:blur(10px);pointer-events:none;
}
.cta-panel .grid-x{position:relative;z-index:1;}
.cta-copy h2{font-size:32px;margin-top:16px;}
.cta-copy p{margin-top:16px;color:var(--text-2);font-size:15px;line-height:1.8;}
.cta-points{margin-top:24px;display:flex;flex-direction:column;gap:12px;}
.cta-points li{display:flex;gap:12px;font-size:15px;color:var(--text-2);}
.cta-points li::before{content:"";flex:0 0 auto;width:6px;height:6px;margin-top:9px;border-radius:50%;background:var(--mint);box-shadow:0 0 10px rgba(75,227,192,.8);}
.form-card{
  background:rgba(11,18,32,.82);border:1px solid var(--line-strong);border-radius:var(--r-card);
  padding:28px;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow-card);
}
.field{margin-bottom:20px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;}
.field label .req{color:var(--lava);margin-left:4px;}
.field input,.field textarea{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-btn);
  background:var(--surface-2);border:1px solid var(--line-strong);color:var(--text);font-size:15px;
  transition:border-color .16s ease-out,box-shadow .16s ease-out;
}
.field textarea{height:120px;padding:14px 16px;line-height:1.6;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,91,255,.24);}
.form-note{font-size:12px;color:var(--text-3);margin-top:14px;line-height:1.7;}
.form-msg{margin-top:16px;font-size:14px;display:none;}
.form-msg.is-show{display:block;}
.site-footer{background:#050810;border-top:1px solid var(--line);padding:72px 0 0;}
.footer-col h4{
  font-family:var(--mono);font-size:13px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--text);margin-bottom:20px;font-weight:600;
}
.footer-col p,.footer-col li{font-size:14px;color:var(--text-3);line-height:1.8;}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul li a{color:var(--text-3);display:inline-flex;min-height:32px;align-items:center;}
.footer-col ul li a:hover{color:var(--mint);}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{max-width:280px;}
.footer-bottom{
  margin-top:56px;padding:24px 0;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--mint);}
.to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;z-index:60;
  background:rgba(20,28,44,.85);border:1px solid var(--line-strong);color:var(--text);
  display:flex;align-items:center;justify-content:center;
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{transform:translateY(-2px);color:var(--mint);border-color:rgba(47,91,255,.6);}
@media (max-width:1023px){
  .hero{padding:72px 0;}
  .hero-title{font-size:34px;max-width:none;}
  .hero-float{position:static;margin-top:24px;max-width:none;}
  .proof-row{grid-template-columns:1fr;gap:24px;margin-bottom:56px;}
  .proof-row.reverse .proof-media{order:0;}
  .cta-panel{padding:32px 24px;}
}
@media (max-width:767px){
  .section{padding:56px 0;}
  .section-lg{padding:56px 0;}
  .hero{padding:56px 0;}
  .hero-title{font-size:28px;}
  .hero-sub{font-size:16px;}
  .section-head{margin-bottom:32px;}
  .section-head h2{font-size:26px;}
  .faq-side h2{font-size:24px;}
  .cta-copy h2{font-size:26px;}
  .stat-band{grid-template-columns:1fr;gap:20px;padding:24px;}
  .proof-text h3{font-size:20px;}
  .form-card{padding:22px;}
  .site-footer{padding:56px 0 0;}
}
@media (max-width:519px){
  .grid-container{padding-left:16px;padding-right:16px;}
  .hero-title{font-size:26px;line-height:1.3;}
  .hero-actions .btn{flex:1 1 100%;}
  .hero-stats{gap:20px;}
  .hero-stats li strong{font-size:22px;}
  .step-card{padding:24px 20px;}
  .step-num{font-size:40px;}
  .btn{height:46px;}
  .cta-panel{padding:24px 18px;border-radius:18px;}
}

/* roulang page: category1 */
:root{
  --bg:#070B14;
  --surface:#0E1524;
  --surface-2:#0B1220;
  --glass:rgba(20,28,44,.62);
  --primary:#2F5BFF;
  --primary-soft:rgba(47,91,255,.16);
  --mint:#4BE3C0;
  --mint-soft:rgba(75,227,192,.14);
  --accent:#FF7A45;
  --text:#EAF0FF;
  --muted:#9AA9C4;
  --faint:#6B7A96;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --r-card:18px;
  --r-btn:12px;
  --r-pill:999px;
  --r-img:16px;
  --shadow-card:0 20px 60px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.10);
  --shadow-btn:0 0 0 1px rgba(47,91,255,.55), 0 10px 34px rgba(47,91,255,.38);
  --sp-1:8px; --sp-2:16px; --sp-3:24px; --sp-4:32px; --sp-5:48px; --sp-6:72px; --sp-7:96px;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sans:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(680px 420px at 82% 4%, rgba(75,227,192,.10), transparent 65%),
    radial-gradient(720px 480px at 8% 22%, rgba(47,91,255,.14), transparent 70%);
  z-index:0;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-img);}
a{color:var(--mint);text-decoration:none;transition:color .18s ease-out,opacity .18s ease-out;}
a:hover{color:#7CF0D8;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.2px;color:var(--text);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--mint);outline-offset:3px;border-radius:6px;}
.grid-container{max-width:1200px;padding-left:var(--sp-3);padding-right:var(--sp-3);margin:0 auto;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.5px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,20,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .22s ease-out;
}
.site-header.is-scrolled{background:rgba(7,11,20,.92);border-bottom-color:var(--line-strong);}
.header-inner{display:flex;align-items:center;gap:var(--sp-3);min-height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto;}
.brand:hover{color:var(--text);}
.brand-dot{
  width:10px;height:10px;border-radius:var(--r-pill);
  background:var(--mint);
  box-shadow:0 0 0 4px rgba(75,227,192,.16),0 0 16px rgba(75,227,192,.85);
}
.brand-name{font-size:19px;font-weight:800;letter-spacing:.6px;}
.brand-tag{
  font-size:11px;line-height:1;padding:5px 9px;border-radius:var(--r-pill);
  color:var(--mint);border:1px solid rgba(75,227,192,.42);
  background:var(--mint-soft);white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{
  position:relative;display:inline-block;padding:10px 12px;
  font-size:14px;color:var(--muted);border-radius:8px;white-space:nowrap;
  transition:color .18s ease-out,background .18s ease-out;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out;
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--text);}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.status-pill{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12px;color:var(--mint);padding:6px 12px;border-radius:var(--r-pill);
  border:1px solid rgba(75,227,192,.3);background:var(--mint-soft);white-space:nowrap;
}
.status-pill .dot{
  width:6px;height:6px;border-radius:var(--r-pill);background:var(--mint);
  animation:breathe 2.4s ease-in-out infinite;
}
@keyframes breathe{
  0%,100%{box-shadow:0 0 0 0 rgba(75,227,192,.55);opacity:1;}
  50%{box-shadow:0 0 0 6px rgba(75,227,192,0);opacity:.6;}
}
.countdown{
  font-family:var(--mono);font-size:13px;color:var(--text);
  padding:7px 12px;border-radius:var(--r-pill);
  background:var(--surface-2);border:1px solid var(--line);white-space:nowrap;
}
.countdown span{color:var(--accent);font-weight:700;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:.3px;cursor:pointer;
  transition:transform .12s ease-out,box-shadow .18s ease-out,background .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.btn:hover{transform:translateY(-2px);}
.btn:active{transform:translateY(0);}
.btn-cta{background:linear-gradient(135deg,#FF8A5C,#FF6A33);color:#1B0A02;box-shadow:0 10px 30px rgba(255,122,69,.32);}
.btn-cta:hover{color:#1B0A02;box-shadow:0 14px 38px rgba(255,122,69,.46);}
.btn-primary{background:linear-gradient(135deg,#3C68FF,#2F5BFF);color:#fff;box-shadow:var(--shadow-btn);}
.btn-primary:hover{color:#fff;box-shadow:0 0 0 1px rgba(47,91,255,.8),0 16px 44px rgba(47,91,255,.5);}
.btn-ghost{background:rgba(255,255,255,.03);border-color:var(--line-strong);color:var(--text);}
.btn-ghost:hover{color:var(--text);border-color:rgba(75,227,192,.55);background:rgba(75,227,192,.08);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.04);border:1px solid var(--line-strong);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-drawer{
  display:none;overflow:hidden;max-height:0;
  transition:max-height .22s ease-out;
  border-top:1px solid transparent;
  background:rgba(7,11,20,.98);
}
.mobile-drawer.is-open{max-height:520px;border-top-color:var(--line);}
.mobile-drawer .drawer-inner{padding:var(--sp-2) var(--sp-3) var(--sp-3);}
.mobile-drawer a.drawer-link{
  display:block;padding:13px 4px;color:var(--muted);font-size:15px;
  border-bottom:1px solid var(--line);
}
.mobile-drawer a.drawer-link.is-active{color:var(--mint);}
.mobile-drawer .btn{width:100%;margin-top:var(--sp-2);}

/* ============ 面包屑 ============ */
.crumbs{
  padding:var(--sp-3) 0 0;
  font-size:13px;color:var(--faint);
  display:flex;flex-wrap:wrap;align-items:center;gap:6px;
  position:relative;z-index:1;
}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--mint);}
.crumbs .sep{color:rgba(255,255,255,.22);}
.crumbs .current{color:var(--text);}

/* ============ 分类头 ============ */
.cat-hero{
  position:relative;z-index:1;
  margin:var(--sp-3) 0 var(--sp-6);
  border-radius:22px;overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(7,11,20,.94) 0%,rgba(7,11,20,.82) 52%,rgba(7,11,20,.62) 100%);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:44px 44px;opacity:.5;
  mask-image:radial-gradient(600px 320px at 78% 30%,#000,transparent 75%);
  -webkit-mask-image:radial-gradient(600px 320px at 78% 30%,#000,transparent 75%);
}
.cat-hero-inner{position:relative;z-index:2;padding:var(--sp-6) var(--sp-5);max-width:760px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12px;letter-spacing:2px;text-transform:uppercase;
  color:var(--mint);padding:6px 12px;border-radius:var(--r-pill);
  border:1px solid rgba(75,227,192,.32);background:var(--mint-soft);
  margin-bottom:var(--sp-2);
}
.cat-hero h1{
  font-size:40px;line-height:1.22;letter-spacing:.5px;margin-bottom:var(--sp-2);
  background:linear-gradient(120deg,#FFFFFF 20%,#B9CBFF 78%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.cat-hero h1 em{font-style:normal;color:var(--mint);-webkit-text-fill-color:var(--mint);}
.cat-lead{font-size:17px;color:var(--muted);max-width:620px;}
.cat-hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:var(--sp-4);}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:var(--sp-4);}
.mini-badge{
  font-family:var(--mono);font-size:12px;color:var(--text);
  padding:7px 13px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--line-strong);
}
.mini-badge b{color:var(--mint);font-weight:700;}

/* ============ 通用板块 ============ */
.section{position:relative;z-index:1;padding:var(--sp-6) 0;}
.section-head{max-width:720px;margin-bottom:var(--sp-5);}
.section-head h2{font-size:28px;letter-spacing:.4px;}
.section-head p{margin-top:12px;color:var(--muted);font-size:15px;}
.section-tag{
  display:inline-block;font-family:var(--mono);font-size:12px;letter-spacing:1.6px;
  color:var(--primary);margin-bottom:10px;text-transform:uppercase;
}
.section-tag::before{content:"";display:inline-block;width:18px;height:2px;background:var(--primary);vertical-align:middle;margin-right:8px;border-radius:2px;}

/* ============ 准备清单 ============ */
.prep-grid{display:grid;grid-template-columns:5fr 7fr;gap:var(--sp-5);align-items:center;}
.prep-figure{position:relative;}
.prep-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);border:1px solid var(--line-strong);box-shadow:var(--shadow-card);}
.prep-figure figcaption{
  margin-top:12px;font-size:13px;color:var(--faint);
}
.prep-list{display:grid;gap:var(--sp-2);}
.prep-item{
  display:flex;gap:16px;align-items:flex-start;
  padding:20px 22px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  transition:border-color .18s ease-out,transform .18s ease-out;
}
.prep-item:hover{border-color:rgba(47,91,255,.4);transform:translateY(-3px);}
.prep-item .num{font-family:var(--mono);font-size:13px;color:var(--mint);padding-top:3px;flex:0 0 auto;}
.prep-item h3{font-size:17px;margin-bottom:6px;}
.prep-item p{font-size:14px;color:var(--muted);}

/* ============ 流程步骤（左栏 + 内容卡） ============ */
.step-layout{display:grid;grid-template-columns:3fr 9fr;gap:var(--sp-5);align-items:start;}
.step-rail{position:sticky;top:96px;}
.rail-title{font-size:13px;font-family:var(--mono);letter-spacing:1.4px;color:var(--faint);margin-bottom:var(--sp-2);text-transform:uppercase;}
.rail-list{position:relative;padding-left:26px;}
.rail-list::before{
  content:"";position:absolute;left:7px;top:6px;bottom:10px;width:1px;
  background:linear-gradient(180deg,rgba(47,91,255,.85),rgba(75,227,192,.35),rgba(255,255,255,.06));
}
.rail-list li{position:relative;margin-bottom:20px;}
.rail-list li::before{
  content:"";position:absolute;left:-24px;top:9px;width:9px;height:9px;border-radius:50%;
  background:var(--bg);border:2px solid rgba(47,91,255,.9);
  box-shadow:0 0 0 4px rgba(47,91,255,.12);
}
.rail-list a{display:flex;flex-direction:column;gap:4px;color:var(--muted);}
.rail-list a:hover{color:var(--text);}
.rail-list .rn{font-family:var(--mono);font-size:12px;color:var(--mint);letter-spacing:1px;}
.rail-list .rt{font-size:14px;line-height:1.5;}

.step-cards{display:grid;gap:var(--sp-3);}
.step-card{
  position:relative;
  padding:28px 30px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:border-color .18s ease-out,transform .18s ease-out;
  scroll-margin-top:96px;
}
.step-card:hover{border-color:rgba(47,91,255,.4);transform:translateY(-3px);}
.step-card-head{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:12px;}
.step-index{
  font-family:var(--mono);font-size:26px;font-weight:700;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(75,227,192,.7);
  letter-spacing:1px;
}
.step-card-head h3{font-size:19px;}
.tag{
  display:inline-block;font-size:12px;padding:4px 10px;border-radius:var(--r-pill);
  color:var(--mint);background:var(--mint-soft);border:1px solid rgba(75,227,192,.3);
  white-space:nowrap;
}
.step-card > p{color:var(--muted);font-size:15px;}
.check-list{margin-top:16px;display:grid;gap:9px;}
.check-list li{
  position:relative;padding-left:22px;font-size:14.5px;color:var(--muted);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
  background:var(--mint);box-shadow:0 0 10px rgba(75,227,192,.6);
}
.note-strip{
  margin-top:18px;padding:14px 16px;border-radius:12px;
  background:rgba(47,91,255,.10);border-left:3px solid var(--primary);
  font-size:14px;color:#C7D3EC;
}

/* ============ 对照表 ============ */
.table-scroll{
  overflow-x:auto;border-radius:var(--r-card);
  border:1px solid var(--line);background:var(--surface);
  box-shadow:var(--shadow-card);
}
table.status-table{width:100%;border-collapse:collapse;min-width:640px;font-size:14.5px;}
table.status-table thead th{
  background:#111A2C;color:var(--text);text-align:left;
  padding:16px 20px;font-weight:600;font-size:14px;
  border-bottom:1px solid var(--line-strong);white-space:nowrap;
}
table.status-table tbody td{padding:15px 20px;color:var(--muted);border-bottom:1px solid var(--line);vertical-align:top;}
table.status-table tbody tr:nth-child(even){background:rgba(255,255,255,.02);}
table.status-table tbody tr:last-child td{border-bottom:none;}
table.status-table tbody td:first-child{color:var(--text);font-weight:600;}
table.status-table tbody tr:hover{background:rgba(47,91,255,.07);}
.field-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--sp-2);margin-top:var(--sp-4);}
.field-card{
  padding:20px 22px;border-radius:14px;background:var(--surface-2);
  border:1px solid var(--line);
}
.field-card h3{font-size:15px;margin-bottom:8px;color:var(--text);}
.field-card h3 span{font-family:var(--mono);font-size:12px;color:var(--primary);margin-right:8px;}
.field-card p{font-size:14px;color:var(--muted);}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:var(--sp-5);align-items:start;}
.faq-aside{position:sticky;top:96px;}
.faq-aside h2{font-size:26px;}
.faq-aside p{margin-top:12px;color:var(--muted);font-size:14.5px;}
.faq-aside .btn{margin-top:var(--sp-3);}
.faq-list{display:grid;gap:0;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0 20px 16px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--text);
  border-left:3px solid transparent;transition:color .18s ease-out,border-color .18s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--mint);}
.faq-item summary .ico{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  border:1px solid var(--line-strong);display:flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--muted);transition:transform .22s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.faq-item[open] summary{border-left-color:var(--primary);padding-left:16px;color:var(--text);}
.faq-item[open] summary .ico{transform:rotate(180deg);color:var(--mint);border-color:rgba(75,227,192,.5);}
.faq-answer{padding:0 0 22px 16px;color:var(--muted);font-size:14.5px;max-width:680px;}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;z-index:1;margin:var(--sp-6) 0 var(--sp-7);
  padding:var(--sp-6) var(--sp-5);border-radius:22px;overflow:hidden;
  background:linear-gradient(120deg,rgba(47,91,255,.22),rgba(75,227,192,.12));
  border:1px solid rgba(47,91,255,.35);
  box-shadow:0 0 0 1px rgba(47,91,255,.18),0 24px 70px rgba(47,91,255,.22);
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(75,227,192,.35),transparent 68%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4);flex-wrap:wrap;}
.cta-inner h2{font-size:26px;margin-bottom:10px;}
.cta-inner p{color:#C9D6F2;font-size:15px;max-width:520px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;z-index:1;
  background:#060A12;border-top:1px solid var(--line);
  padding:var(--sp-6) 0 var(--sp-3);
}
.footer-col{padding-right:var(--sp-3);margin-bottom:var(--sp-4);}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{font-size:13.5px;color:var(--faint);max-width:280px;line-height:1.8;}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:14px;letter-spacing:.4px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul li{font-size:13.5px;color:var(--faint);}
.footer-col ul a{color:var(--muted);font-size:13.5px;}
.footer-col ul a:hover{color:var(--mint);}
.footer-col > p{font-size:12.5px;color:var(--faint);margin-top:14px;line-height:1.8;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;gap:var(--sp-2);
  justify-content:space-between;
  padding-top:var(--sp-3);border-top:1px solid var(--line);
  font-size:12.5px;color:var(--faint);
}
.footer-bottom a{color:var(--muted);}
.footer-bottom a:hover{color:var(--mint);}
#backTop{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:50%;
  background:rgba(255,255,255,.05);border:1px solid var(--line-strong);
  color:var(--text);font-size:12px;
}
#backTop:hover{border-color:rgba(75,227,192,.55);color:var(--mint);}

/* ============ 响应式 ============ */
@media screen and (max-width:1199px){
  .cat-hero h1{font-size:34px;}
}
@media screen and (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .mobile-drawer{display:block;}
  .header-actions .status-pill{display:none;}
  .cat-hero-inner{padding:var(--sp-5) var(--sp-4);}
  .cat-hero h1{font-size:30px;}
  .prep-grid{grid-template-columns:1fr;gap:var(--sp-4);}
  .step-layout{grid-template-columns:1fr;gap:var(--sp-4);}
  .step-rail{position:static;}
  .rail-list{display:grid;grid-template-columns:repeat(2,1fr);gap:10px 18px;padding-left:0;}
  .rail-list::before{display:none;}
  .rail-list li{margin-bottom:0;padding-left:0;}
  .rail-list li::before{display:none;}
  .faq-layout{grid-template-columns:1fr;gap:var(--sp-4);}
  .faq-aside{position:static;}
  .field-grid{grid-template-columns:1fr;}
}
@media screen and (max-width:767px){
  :root{--sp-6:56px;--sp-7:56px;}
  .header-inner{min-height:56px;gap:12px;}
  .brand-name{font-size:17px;}
  .brand-tag{display:none;}
  .header-actions .countdown{display:none;}
  .header-actions .btn-cta{height:38px;padding:0 14px;font-size:13.5px;}
  .cat-hero{margin-bottom:var(--sp-5);border-radius:18px;}
  .cat-hero-inner{padding:var(--sp-4) var(--sp-3);}
  .cat-hero h1{font-size:25px;line-height:1.3;}
  .cat-lead{font-size:15px;}
  .cat-hero-actions .btn{flex:1 1 100%;}
  .section-head h2{font-size:23px;}
  .step-card{padding:22px 20px;border-radius:16px;}
  .step-index{font-size:22px;}
  .cta-band{padding:var(--sp-5) var(--sp-3);border-radius:18px;}
  .cta-inner h2{font-size:22px;}
  .cta-actions .btn{flex:1 1 100%;}
  .rail-list{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media screen and (max-width:520px){
  .cat-hero h1{font-size:23px;}
  .hero-badges{gap:8px;}
  .mini-badge{font-size:11px;padding:6px 10px;}
  .step-card-head h3{font-size:17px;}
}

/* roulang page: article */
:root {
  --bg: #070B14;
  --bg-2: #0E1524;
  --bg-3: #0B1220;
  --panel: rgba(20, 28, 44, .62);
  --panel-strong: rgba(14, 21, 36, .92);
  --line: rgba(255, 255, 255, .08);
  --line-strong: rgba(255, 255, 255, .14);
  --text: #EAF0FF;
  --muted: #9AA9C4;
  --weak: #6B7A96;
  --primary: #2F5BFF;
  --primary-soft: rgba(47, 91, 255, .16);
  --mint: #4BE3C0;
  --mint-soft: rgba(75, 227, 192, .12);
  --orange: #FF7A45;
  --danger: #FF5A5F;
  --radius-card: 18px;
  --radius-btn: 12px;
  --radius-pill: 999px;
  --radius-img: 16px;
  --shadow-card: 0 20px 60px rgba(0, 0, 0, .45), inset 0 1px 0 rgba(255, 255, 255, .10);
  --shadow-btn: 0 0 0 1px rgba(47, 91, 255, .55), 0 10px 34px rgba(47, 91, 255, .38);
  --font-sans: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --container: 1200px;
  --gutter: 24px;
  --header-h: 64px;
}
*,
*::before,
*::after { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  max-width: 100%;
  overflow-x: hidden;
}
body {
  margin: 0;
  max-width: 100%;
  overflow-x: hidden;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background-color: var(--bg);
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px),
    radial-gradient(circle at 88% 0%, rgba(75, 227, 192, .14), transparent 28%),
    radial-gradient(circle at 8% 24%, rgba(47, 91, 255, .13), transparent 34%);
  background-size: 48px 48px, 48px 48px, auto, auto;
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; height: auto; }
a { color: var(--mint); text-decoration: none; transition: color .16s ease, border-color .16s ease, background .16s ease, transform .16s ease, box-shadow .16s ease; }
a:hover { color: #8FF5DF; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
h1, h2, h3, h4, h5, h6, p, ul, ol, figure, blockquote { margin-top: 0; }
h1, h2, h3, h4, h5, h6 { color: #fff; line-height: 1.3; font-weight: 700; }
::selection { background: rgba(75, 227, 192, .28); color: #fff; }
:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
}
.grid-container {
  width: 100%;
  max-width: var(--container);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}
.grid-x { display: flex; flex-wrap: wrap; margin-left: -12px; margin-right: -12px; }
.grid-x > .cell { padding-left: 12px; padding-right: 12px; }
.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0);
  white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 1000;
  padding: 10px 16px;
  border-radius: 10px;
  background: var(--mint);
  color: #04110E;
  font-weight: 700;
}
.skip-link:focus { top: 12px; }

/* Header / Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(7, 11, 20, .78);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: background .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.site-header.is-scrolled {
  background: rgba(7, 11, 20, .94);
  box-shadow: 0 14px 34px rgba(0, 0, 0, .34);
  border-bottom-color: rgba(255, 255, 255, .11);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: var(--header-h);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: #fff;
  flex: 0 0 auto;
  min-height: 44px;
}
.brand:hover { color: #fff; }
.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 5px rgba(75, 227, 192, .12), 0 0 20px rgba(75, 227, 192, .72);
}
.brand-name {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: .3px;
}
.brand-tag {
  font-size: 11px;
  line-height: 1;
  padding: 6px 9px;
  border-radius: var(--radius-pill);
  color: var(--mint);
  border: 1px solid rgba(75, 227, 192, .32);
  background: rgba(75, 227, 192, .08);
  white-space: nowrap;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 10px;
  flex: 1 1 auto;
}
.nav-links a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 11px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  border-radius: 8px;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 11px;
  right: 11px;
  bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .18s ease;
}
.nav-links a:hover,
.nav-links a.is-active { color: #fff; background: rgba(255, 255, 255, .035); }
.nav-links a:hover::after,
.nav-links a.is-active::after { transform: scaleX(1); }
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}
.status-pill,
.countdown-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 34px;
  padding: 0 12px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--line);
  background: rgba(14, 21, 36, .68);
  white-space: nowrap;
}
.status-pill { color: var(--mint); border-color: rgba(75, 227, 192, .26); }
.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 0 rgba(75, 227, 192, .56);
  animation: breathe 2.2s ease-out infinite;
}
@keyframes breathe {
  0% { box-shadow: 0 0 0 0 rgba(75, 227, 192, .5); }
  70% { box-shadow: 0 0 0 8px rgba(75, 227, 192, 0); }
  100% { box-shadow: 0 0 0 0 rgba(75, 227, 192, 0); }
}
.countdown-pill strong {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text);
  letter-spacing: .4px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 20px;
  border-radius: var(--radius-btn);
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 14px;
  line-height: 1.2;
  text-align: center;
  white-space: nowrap;
  transition: transform .16s ease, box-shadow .16s ease, background .16s ease, border-color .16s ease, color .16s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-primary {
  color: #1A0B03;
  background: linear-gradient(180deg, #FF8F61 0%, var(--orange) 100%);
  box-shadow: 0 10px 28px rgba(255, 122, 69, .28), inset 0 1px 0 rgba(255, 255, 255, .28);
}
.btn-primary:hover {
  color: #1A0B03;
  box-shadow: 0 14px 36px rgba(255, 122, 69, .4), inset 0 1px 0 rgba(255, 255, 255, .34);
}
.btn-ghost {
  color: var(--text);
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, .035);
}
.btn-ghost:hover {
  color: #fff;
  border-color: rgba(75, 227, 192, .46);
  background: rgba(75, 227, 192, .08);
}
.btn-sm { min-height: 40px; padding: 0 16px; font-size: 13px; }
.btn-block { width: 100%; }
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, .035);
  color: var(--text);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-drawer {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 79;
  overflow-y: auto;
  padding: 20px 0 32px;
  background: rgba(7, 11, 20, .98);
  border-top: 1px solid var(--line);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.mobile-drawer[hidden] { display: none; }
.mobile-status {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}
.mobile-nav {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
}
.mobile-nav a {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 0 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .025);
  color: var(--text);
  font-weight: 600;
}
.mobile-nav a:hover,
.mobile-nav a.is-active {
  border-color: rgba(75, 227, 192, .38);
  background: rgba(75, 227, 192, .08);
  color: #fff;
}
body.menu-open { overflow: hidden; }

/* Breadcrumb */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 22px 0 0;
  font-size: 13px;
  color: var(--weak);
}
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--mint); }
.breadcrumb .sep { color: rgba(255, 255, 255, .22); }
.breadcrumb span:last-child { color: var(--muted); }

/* Article */
.article-hero {
  padding: 48px 0 30px;
  max-width: 900px;
}
.article-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  color: var(--mint);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .5px;
}
.article-kicker::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--mint);
  box-shadow: 0 0 12px rgba(75, 227, 192, .8);
}
.article-hero h1 {
  margin-bottom: 18px;
  font-size: clamp(26px, 4.4vw, 36px);
  line-height: 1.28;
  letter-spacing: -.4px;
  max-width: 880px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  color: var(--muted);
  font-size: 13px;
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.meta-item time,
.meta-item .mono { font-family: var(--font-mono); color: var(--text); }
.badge {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 10px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  line-height: 1;
  font-weight: 700;
  letter-spacing: .2px;
  color: var(--mint);
  background: rgba(75, 227, 192, .08);
  border: 1px solid rgba(75, 227, 192, .26);
}
.article-lead {
  max-width: 760px;
  margin-top: 18px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}
.article-body-card {
  max-width: 860px;
  margin: 8px 0 0;
  padding: 34px;
  border-radius: var(--radius-card);
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.article-content {
  max-width: 760px;
  margin: 0 auto;
  color: #DCE6FF;
  font-size: 17px;
  line-height: 1.9;
}
.article-content > :first-child { margin-top: 0; }
.article-content > :last-child { margin-bottom: 0; }
.article-content p { margin: 0 0 1.25em; }
.article-content a { color: var(--mint); text-decoration: underline; text-underline-offset: 3px; }
.article-content strong { color: #fff; font-weight: 700; }
.article-content h2 {
  position: relative;
  margin: 2em 0 .8em;
  padding-left: 15px;
  font-size: 24px;
  line-height: 1.4;
}
.article-content h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: .18em;
  bottom: .18em;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--mint), var(--primary));
  box-shadow: 0 0 14px rgba(75, 227, 192, .48);
}
.article-content h3 {
  margin: 1.6em 0 .6em;
  font-size: 19px;
  color: #fff;
}
.article-content h4 {
  margin: 1.4em 0 .5em;
  font-size: 17px;
  color: #fff;
}
.article-content ul,
.article-content ol {
  margin: 0 0 1.3em;
  padding-left: 1.35em;
}
.article-content li { margin: .42em 0; }
.article-content ul li::marker { color: var(--mint); }
.article-content ol li::marker { color: var(--mint); font-family: var(--font-mono); }
.article-content blockquote {
  margin: 1.5em 0;
  padding: 18px 20px;
  border-left: 3px solid var(--primary);
  border-radius: 0 12px 12px 0;
  background: rgba(47, 91, 255, .08);
  color: var(--muted);
  font-style: normal;
}
.article-content blockquote p:last-child { margin-bottom: 0; }
.article-content img {
  width: auto;
  max-width: 100%;
  margin: 24px auto;
  border-radius: var(--radius-img);
  border: 1px solid var(--line);
  box-shadow: 0 14px 40px rgba(0, 0, 0, .32);
}
.article-content figure { margin: 24px 0; }
.article-content figcaption {
  margin-top: 8px;
  text-align: center;
  color: var(--weak);
  font-size: 13px;
}
.article-content table {
  display: block;
  width: 100%;
  margin: 1.5em 0;
  overflow-x: auto;
  border-collapse: collapse;
  border-spacing: 0;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--bg-3);
  -webkit-overflow-scrolling: touch;
}
.article-content th,
.article-content td {
  min-width: 110px;
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, .065);
  vertical-align: top;
}
.article-content th {
  color: #fff;
  font-weight: 700;
  background: rgba(47, 91, 255, .16);
  white-space: nowrap;
}
.article-content tr:nth-child(even) td { background: rgba(255, 255, 255, .025); }
.article-content tr:last-child td { border-bottom: 0; }
.article-content code {
  padding: 2px 6px;
  border-radius: 6px;
  background: rgba(255, 255, 255, .07);
  color: var(--mint);
  font-family: var(--font-mono);
  font-size: .9em;
}
.article-content pre {
  overflow-x: auto;
  padding: 18px;
  border-radius: 12px;
  background: #09101D;
  border: 1px solid var(--line);
}
.article-content pre code { padding: 0; background: transparent; }
.article-content hr {
  height: 1px;
  margin: 2em 0;
  border: 0;
  background: var(--line);
}
.empty-state {
  padding: 36px 20px;
  text-align: center;
  border: 1px dashed rgba(255, 255, 255, .18);
  border-radius: 16px;
  background: rgba(255, 255, 255, .025);
}
.empty-state h2 { margin-bottom: 10px; font-size: 24px; }
.empty-state p { max-width: 460px; margin: 0 auto 20px; color: var(--muted); font-size: 15px; }
.article-note {
  max-width: 860px;
  margin: 28px 0 0;
  padding: 24px;
  border-radius: 16px;
  border: 1px solid rgba(75, 227, 192, .24);
  background: rgba(75, 227, 192, .055);
}
.article-note h2 {
  margin: 0 0 14px;
  font-size: 20px;
}
.article-note ul {
  margin: 0;
  padding-left: 1.2em;
  color: var(--muted);
}
.article-note li { margin: 8px 0; }
.article-note li::marker { color: var(--mint); }

/* Related cards */
.related-section {
  padding: 72px 0 34px;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 24px;
}
.section-title {
  margin: 0;
  font-size: clamp(22px, 3vw, 28px);
}
.section-desc {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
  max-width: 620px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.content-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  overflow: hidden;
  color: var(--text);
  border-radius: var(--radius-card);
  border: 1px solid var(--line);
  background: rgba(14, 21, 36, .72);
  box-shadow: 0 14px 40px rgba(0, 0, 0, .26);
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.content-card:hover {
  color: var(--text);
  transform: translateY(-3px);
  border-color: rgba(47, 91, 255, .48);
  box-shadow: 0 20px 56px rgba(0, 0, 0, .4), 0 0 0 1px rgba(47, 91, 255, .12);
}
.card-media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--bg-2);
}
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s ease;
}
.content-card:hover .card-media img { transform: scale(1.025); }
.card-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 42%, rgba(7, 11, 20, .72) 100%);
  pointer-events: none;
}
.card-body {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  padding: 18px;
}
.card-body .badge { align-self: flex-start; margin-bottom: 12px; }
.card-title {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0 0 8px;
  font-size: 17px;
  line-height: 1.45;
  transition: color .16s ease;
}
.content-card:hover .card-title { color: var(--mint); }
.card-desc {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}
.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--weak);
  font-size: 12px;
}
.card-meta time,
.card-meta .mono { font-family: var(--font-mono); }
.card-arrow { color: var(--mint); font-size: 16px; line-height: 1; }
.article-actions {
  padding: 20px 0 72px;
}
.article-actions .btn { min-width: 150px; }

/* Footer */
.site-footer {
  position: relative;
  padding: 54px 0 20px;
  border-top: 1px solid var(--line);
  background:
    radial-gradient(circle at 12% 0%, rgba(47, 91, 255, .09), transparent 34%),
    rgba(6, 10, 18, .86);
}
.footer-col { margin-bottom: 28px; }
.footer-brand .brand { display: inline-flex; margin-bottom: 14px; }
.footer-col h4 {
  margin-bottom: 14px;
  color: #fff;
  font-size: 14px;
  letter-spacing: .2px;
}
.footer-col p {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}
.footer-col ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
.footer-col li { margin: 8px 0; }
.footer-col li,
.footer-col li a {
  color: var(--muted);
  font-size: 13px;
}
.footer-col li a:hover { color: var(--mint); }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--weak);
  font-size: 12px;
}
.footer-bottom a { color: var(--muted); }
.footer-bottom a:hover { color: var(--mint); }
#backTop {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .03);
}

/* Responsive */
@media (max-width: 1199px) {
  .nav-links { gap: 0; }
  .nav-links a { padding: 0 9px; font-size: 13px; }
  .header-actions { gap: 8px; }
  .status-pill { display: none; }
}
@media (max-width: 1023px) {
  :root { --header-h: 56px; --gutter: 20px; }
  .header-inner { gap: 14px; }
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
  .header-actions .countdown-pill { display: none; }
  .header-actions .btn-sm { display: none; }
  .brand-tag { font-size: 10px; padding: 5px 8px; }
  .article-hero { padding-top: 38px; }
  .related-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .article-body-card { padding: 28px; }
}
@media (max-width: 767px) {
  :root { --gutter: 16px; }
  body { font-size: 15px; }
  .header-inner { gap: 10px; }
  .brand-name { font-size: 17px; }
  .breadcrumb { padding-top: 16px; }
  .article-hero { padding: 32px 0 22px; }
  .article-hero h1 { margin-bottom: 14px; font-size: 28px; }
  .article-meta { gap: 8px 12px; }
  .article-lead { font-size: 14px; }
  .article-body-card { padding: 22px 18px; border-radius: 16px; }
  .article-content { font-size: 16px; line-height: 1.85; }
  .article-content h2 { font-size: 22px; }
  .article-content h3 { font-size: 18px; }
  .article-note { padding: 20px 18px; }
  .related-section { padding-top: 56px; }
  .section-head { display: block; }
  .related-grid { grid-template-columns: 1fr; }
  .article-actions { padding-bottom: 56px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .site-footer { padding-top: 42px; }
}
@media (max-width: 519px) {
  .brand-tag { display: none; }
  .brand-name { font-size: 16px; }
  .article-hero h1 { font-size: 25px; }
  .article-body-card { padding: 18px 15px; }
  .article-content { font-size: 15.5px; }
  .article-content h2 { font-size: 21px; }
  .article-content h3 { font-size: 17.5px; }
  .article-content table { border-radius: 10px; }
  .article-content th,
  .article-content td { padding: 10px 11px; font-size: 13px; }
  .article-actions .btn { width: 100%; }
  .card-body { padding: 16px; }
  .footer-bottom { gap: 8px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}

/* roulang page: category2 */
:root{
  --bg:#070B14;
  --bg-2:#0B1220;
  --surface:#0E1524;
  --glass:rgba(20,28,44,.62);
  --primary:#2F5BFF;
  --primary-soft:rgba(47,91,255,.16);
  --mint:#4BE3C0;
  --mint-soft:rgba(75,227,192,.14);
  --orange:#FF7A45;
  --text:#EAF0FF;
  --text-2:#9AA9C4;
  --text-3:#6B7A96;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --r-card:18px;
  --r-btn:12px;
  --r-img:16px;
  --r-pill:999px;
  --shadow-card:0 20px 60px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.10);
  --shadow-btn:0 0 0 1px rgba(47,91,255,.55), 0 10px 34px rgba(47,91,255,.38);
  --shadow-orange:0 0 0 1px rgba(255,122,69,.5), 0 10px 30px rgba(255,122,69,.28);
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sp-1:8px; --sp-2:16px; --sp-3:24px; --sp-4:32px; --sp-5:48px; --sp-6:72px; --sp-7:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:
    radial-gradient(900px 520px at 82% -8%, rgba(75,227,192,.10), transparent 62%),
    radial-gradient(760px 460px at 8% 4%, rgba(47,91,255,.14), transparent 60%),
    var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--mint);text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--text);}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:0;list-style:none;}
:focus-visible{outline:2px solid var(--mint);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(47,91,255,.4);color:#fff;}

.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;}
.grid-container.full{max-width:100%;}

/* ---------- 顶部状态条 ---------- */
.topbar{
  height:32px;line-height:32px;
  background:linear-gradient(90deg,rgba(47,91,255,.20),rgba(75,227,192,.14));
  border-bottom:1px solid var(--line);
  font-size:12.5px;color:var(--text-2);
}
.topbar .grid-container{display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar strong{color:var(--mint);font-weight:600;}
.topbar .mono{font-family:var(--font-mono);letter-spacing:.02em;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,20,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .2s ease-out,border-color .2s ease-out;
}
.site-header.is-scrolled{background:rgba(7,11,20,.92);border-bottom-color:var(--line);}
.header-inner{
  display:flex;align-items:center;gap:24px;min-height:64px;
}
.brand{display:inline-flex;align-items:center;gap:8px;color:var(--text);flex:0 0 auto;}
.brand:hover{color:var(--text);}
.brand-dot{
  width:10px;height:10px;border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 0 4px rgba(75,227,192,.16),0 0 14px rgba(75,227,192,.75);
}
.brand-name{font-size:19px;font-weight:700;letter-spacing:.01em;}
.brand-tag{
  font-size:11px;line-height:1;padding:5px 9px;border-radius:var(--r-pill);
  color:var(--mint);background:var(--mint-soft);
  border:1px solid rgba(75,227,192,.32);
  white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:4px;flex:1 1 auto;justify-content:center;}
.nav-links a{
  position:relative;display:inline-block;
  padding:9px 12px;font-size:14.5px;color:var(--text-2);border-radius:8px;
  transition:color .18s ease-out,background .18s ease-out;
  white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;
  background:var(--primary);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease-out;
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.05);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--text);}
.nav-links a.is-active::after{transform:scaleX(1);background:var(--mint);}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.status-pill{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12.5px;padding:6px 12px;border-radius:var(--r-pill);
  color:var(--mint);background:rgba(75,227,192,.10);
  border:1px solid rgba(75,227,192,.28);white-space:nowrap;
}
.status-pill i{
  width:6px;height:6px;border-radius:50%;background:var(--mint);
  animation:breath 2.4s ease-in-out infinite;
}
@keyframes breath{0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(75,227,192,.6);}50%{opacity:.55;box-shadow:0 0 0 5px rgba(75,227,192,0);}}
.time-pill{
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.04em;
  padding:6px 12px;border-radius:var(--r-pill);
  color:var(--text-2);background:rgba(255,255,255,.04);
  border:1px solid var(--line);white-space:nowrap;
}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:10px;cursor:pointer;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text);
}
.nav-toggle i{font-size:16px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;text-decoration:none;
  transition:transform .12s ease-out,box-shadow .18s ease-out,background .18s ease-out,border-color .18s ease-out;
}
.btn:active{transform:translateY(0);}
.btn-primary{
  color:#fff;
  background:linear-gradient(180deg,#3E67FF,#2F5BFF);
  box-shadow:var(--shadow-btn);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,91,255,.7),0 16px 40px rgba(47,91,255,.5);color:#fff;}
.btn-accent{
  color:#16100C;
  background:linear-gradient(180deg,#FF9265,#FF7A45);
  box-shadow:var(--shadow-orange);
}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,122,69,.7),0 16px 38px rgba(255,122,69,.42);color:#16100C;}
.btn-ghost{
  color:var(--text);
  background:rgba(255,255,255,.04);
  border-color:var(--line-strong);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(75,227,192,.55);color:var(--text);background:rgba(75,227,192,.08);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px;}
.nav-actions .btn-sm{padding:0 16px;}

/* 移动抽屉 */
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(7,11,20,.98);
  padding:16px 24px 24px;
}
.mobile-drawer.is-open{display:block;animation:drawerIn .22s ease-out;}
@keyframes drawerIn{from{opacity:0;transform:translateY(-8px);}to{opacity:1;transform:translateY(0);}}
.mobile-drawer ul{display:grid;gap:2px;margin-bottom:16px;}
.mobile-drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:46px;padding:0 14px;border-radius:10px;
  color:var(--text-2);font-size:15px;background:rgba(255,255,255,.03);
}
.mobile-drawer a.drawer-link.is-active{color:var(--text);background:var(--primary-soft);}
.mobile-drawer .btn{width:100%;}

/* ---------- 面包屑 ---------- */
.crumbs{
  padding:20px 0 0;font-size:13px;color:var(--text-3);
}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumbs li{display:inline-flex;align-items:center;gap:8px;}
.crumbs li+li::before{content:"/";color:var(--text-3);opacity:.7;}
.crumbs a{color:var(--text-2);}
.crumbs a:hover{color:var(--mint);}
.crumbs .current{color:var(--text);}

/* ---------- 分类头 ---------- */
.cat-hero{
  position:relative;margin-top:24px;border-radius:20px;overflow:hidden;
  border:1px solid var(--line);
  background-image:linear-gradient(90deg,rgba(7,11,20,.94) 0%,rgba(7,11,20,.78) 46%,rgba(7,11,20,.52) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(520px 260px at 88% 20%,rgba(75,227,192,.18),transparent 70%),
    linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:auto,48px 48px,48px 48px;
  opacity:.55;
}
.cat-hero-inner{
  position:relative;z-index:2;
  display:flex;align-items:flex-end;justify-content:space-between;gap:32px;
  padding:56px 40px 48px;min-height:280px;
}
.cat-hero .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--mint);padding:6px 12px;border-radius:var(--r-pill);
  background:rgba(75,227,192,.10);border:1px solid rgba(75,227,192,.3);
  font-family:var(--font-mono);
}
.cat-hero h1{
  font-size:clamp(26px,3.2vw,40px);line-height:1.28;font-weight:800;
  margin:18px 0 14px;letter-spacing:-.01em;max-width:16em;
}
.cat-hero h1 span{color:var(--mint);}
.cat-hero .lede{
  font-size:16px;color:var(--text-2);max-width:34em;line-height:1.85;
}
.cat-hero-actions{display:flex;flex-direction:column;gap:12px;flex:0 0 auto;align-items:stretch;}
.cat-hero-actions .btn{white-space:nowrap;}
.cat-hero-meta{
  display:flex;flex-wrap:wrap;gap:20px;margin-top:24px;
  font-family:var(--font-mono);font-size:12.5px;color:var(--text-3);
}
.cat-hero-meta b{color:var(--mint);font-weight:600;}

/* ---------- 主体两栏 ---------- */
.main-wrap{padding:var(--sp-6) 0 var(--sp-6);}
.layout{display:flex;gap:48px;align-items:flex-start;}
.toc-col{flex:0 0 25%;max-width:25%;}
.toc-box{
  position:sticky;top:88px;
  padding:22px 20px;border-radius:var(--r-card);
  background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.toc-box h2{
  font-size:13px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--text-3);font-family:var(--font-mono);font-weight:600;margin-bottom:14px;
}
.toc-box ol{display:grid;gap:2px;counter-reset:toc;}
.toc-box li{counter-increment:toc;}
.toc-box a{
  display:flex;align-items:flex-start;gap:10px;
  padding:9px 10px;border-radius:9px;font-size:14px;color:var(--text-2);
  border-left:2px solid transparent;transition:all .16s ease-out;
}
.toc-box a::before{
  content:counter(toc,decimal-leading-zero);
  font-family:var(--font-mono);font-size:11px;color:var(--text-3);
  padding-top:3px;flex:0 0 auto;
}
.toc-box a:hover{color:var(--text);background:rgba(255,255,255,.05);border-left-color:rgba(75,227,192,.6);}
.toc-box a.is-current{color:var(--text);background:var(--primary-soft);border-left-color:var(--primary);}
.toc-box a.is-current::before{color:var(--mint);}
.toc-hint{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--text-3);line-height:1.7;
}
.toc-hint a{color:var(--mint);}

.content-col{flex:1 1 auto;min-width:0;max-width:760px;}

/* ---------- 长文排版 ---------- */
.prose{font-size:16px;color:var(--text-2);}
.prose section+section{margin-top:var(--sp-5);}
.prose h2{
  position:relative;font-size:24px;line-height:1.45;font-weight:700;color:var(--text);
  padding-left:18px;margin-bottom:18px;scroll-margin-top:96px;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--mint));
  box-shadow:0 0 14px rgba(75,227,192,.55);
}
.prose h3{
  font-size:19px;line-height:1.5;font-weight:650;color:var(--text);
  margin:28px 0 12px;scroll-margin-top:96px;
}
.prose p{line-height:1.9;margin-bottom:1.25em;}
.prose p.lead{color:var(--text);font-size:17px;}
.prose strong{color:var(--text);font-weight:650;}
.prose ul,.prose ol{margin:0 0 1.4em;}
.prose ul li,.prose ol li{position:relative;line-height:1.85;padding-left:24px;margin-bottom:10px;}
.prose ul li::before{
  content:"";position:absolute;left:2px;top:.72em;
  width:7px;height:7px;border-radius:2px;background:var(--mint);opacity:.85;
  transform:rotate(45deg);
}
.prose ol{counter-reset:prose-ol;}
.prose ol li{counter-increment:prose-ol;padding-left:32px;}
.prose ol li::before{
  content:counter(prose-ol,decimal-leading-zero);
  position:absolute;left:0;top:2px;
  font-family:var(--font-mono);font-size:12.5px;font-weight:600;
  color:var(--mint);opacity:.9;
}
.prose blockquote{
  margin:24px 0;padding:16px 20px;
  background:rgba(47,91,255,.10);
  border-left:3px solid var(--primary);
  border-radius:0 12px 12px 0;
  color:var(--text-2);font-size:15px;line-height:1.85;
}
.prose blockquote p:last-child{margin-bottom:0;}
.note-card{
  display:flex;gap:14px;padding:18px 20px;margin:24px 0;
  border-radius:14px;background:rgba(75,227,192,.06);
  border:1px solid rgba(75,227,192,.24);
}
.note-card .note-tag{
  flex:0 0 auto;font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--mint);background:rgba(75,227,192,.14);
  border:1px solid rgba(75,227,192,.3);border-radius:6px;
  padding:3px 8px;height:fit-content;white-space:nowrap;
}
.note-card p{margin:0;font-size:14.5px;line-height:1.8;color:var(--text-2);}

.table-wrap{
  margin:24px 0;overflow-x:auto;
  border:1px solid var(--line);border-radius:14px;
  background:rgba(255,255,255,.02);
  -webkit-overflow-scrolling:touch;
}
.table-wrap table{width:100%;min-width:600px;border-collapse:collapse;font-size:14.5px;}
.table-wrap caption{
  caption-side:top;text-align:left;padding:14px 18px 10px;
  font-size:13px;color:var(--text-3);
}
.table-wrap thead th{
  background:#12203A;color:var(--text);
  font-weight:650;font-size:13.5px;letter-spacing:.02em;
  text-align:left;padding:13px 18px;white-space:nowrap;
  border-bottom:1px solid var(--line-strong);
}
.table-wrap tbody td{
  padding:13px 18px;color:var(--text-2);
  border-bottom:1px solid var(--line);vertical-align:top;
}
.table-wrap tbody tr:nth-child(even){background:rgba(255,255,255,.03);}
.table-wrap tbody tr:last-child td{border-bottom:0;}
.table-wrap td.mono{font-family:var(--font-mono);color:var(--mint);font-size:13px;}

.figure-block{margin:28px 0;}
.figure-block img{
  width:100%;border-radius:var(--r-img);
  border:1px solid var(--line);background:var(--surface);
  object-fit:cover;aspect-ratio:16/10;
}
.figure-block figcaption{
  margin-top:10px;font-size:13px;color:var(--text-3);text-align:center;
}

/* FAQ */
.faq-list{margin-top:8px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 4px 18px 16px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--text);
  border-left:3px solid transparent;transition:all .18s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--mint);}
.faq-item summary .chev{
  flex:0 0 auto;font-size:12px;color:var(--text-3);
  transition:transform .22s ease-out,color .18s ease-out;
}
.faq-item[open] summary{border-left-color:var(--primary);color:var(--text);}
.faq-item[open] summary .chev{transform:rotate(180deg);color:var(--mint);}
.faq-answer{padding:0 4px 20px 19px;font-size:14.5px;line-height:1.85;color:var(--text-2);}

/* ---------- 底部 CTA 带 ---------- */
.cta-band{
  margin-top:var(--sp-6);position:relative;overflow:hidden;
  border-radius:20px;border:1px solid rgba(75,227,192,.24);
  background:
    radial-gradient(560px 260px at 12% 0%,rgba(47,91,255,.28),transparent 66%),
    radial-gradient(520px 240px at 92% 100%,rgba(75,227,192,.20),transparent 68%),
    var(--surface);
  box-shadow:var(--shadow-card);
  padding:48px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:26px;font-weight:750;line-height:1.4;margin-bottom:10px;}
.cta-band p{color:var(--text-2);font-size:15px;max-width:34em;line-height:1.8;}
.cta-band .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--sp-7);padding-top:var(--sp-6);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(14,21,36,.6),rgba(7,11,20,0));
}
.footer-col{padding-bottom:var(--sp-4);}
.footer-brand .brand{margin-bottom:16px;}
.footer-col h4{
  font-size:14px;font-weight:650;color:var(--text);
  margin-bottom:16px;letter-spacing:.02em;
}
.footer-col p{font-size:13.5px;line-height:1.8;color:var(--text-3);max-width:24em;}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{font-size:13.5px;color:var(--text-2);}
.footer-col ul a:hover{color:var(--mint);}
.footer-col ul li{font-size:13.5px;color:var(--text-3);}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0;margin-top:8px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-2);font-family:var(--font-mono);font-size:12px;}
.footer-bottom a:hover{color:var(--mint);}

/* 返回顶部 */
.back-top{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:48px;height:48px;border-radius:50%;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--glass);backdrop-filter:blur(12px);
  border:1px solid var(--line-strong);color:var(--text);
  box-shadow:0 12px 30px rgba(0,0,0,.5);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s;
}
.back-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{border-color:rgba(75,227,192,.6);color:var(--mint);}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1199px){
  .layout{gap:32px;}
  .toc-col{flex:0 0 28%;max-width:28%;}
  .content-col{max-width:none;}
}
@media screen and (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .status-pill,.time-pill{display:none;}
  .layout{flex-direction:column;gap:28px;}
  .toc-col{flex:1 1 auto;max-width:100%;width:100%;}
  .toc-box{position:static;}
  .toc-box ol{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cat-hero-inner{flex-direction:column;align-items:flex-start;padding:44px 28px 36px;min-height:auto;}
  .cat-hero-actions{flex-direction:row;flex-wrap:wrap;width:100%;}
  .cta-band{padding:36px 28px;}
}
@media screen and (max-width:767px){
  .grid-container{padding-left:18px;padding-right:18px;}
  .topbar{font-size:11.5px;}
  .topbar .grid-container span:nth-child(2){display:none;}
  .header-inner{min-height:56px;gap:12px;}
  .brand-name{font-size:17px;}
  .brand-tag{font-size:10px;padding:4px 7px;}
  .main-wrap{padding:var(--sp-5) 0 var(--sp-5);}
  .prose h2{font-size:21px;}
  .prose h3{font-size:17.5px;}
  .prose p{font-size:15.5px;}
  .toc-box ol{grid-template-columns:1fr;}
  .cat-hero-inner{padding:32px 20px 28px;}
  .cat-hero .lede{font-size:15px;}
  .cat-hero-meta{gap:14px;font-size:11.5px;}
  .cta-band{padding:28px 20px;margin-top:var(--sp-5);}
  .cta-band h2{font-size:21px;}
  .cta-band .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
  .back-top{right:16px;bottom:16px;width:44px;height:44px;}
  .btn{height:46px;font-size:14.5px;}
}
@media screen and (max-width:519px){
  .brand-tag{display:none;}
  .crumbs{font-size:12px;padding-top:14px;}
  .cat-hero h1{font-size:24px;}
  .cat-hero-actions .btn{width:100%;}
}

/* roulang page: category3 */
:root{
  --bg:#070B14;
  --surface:#0E1524;
  --surface-2:#0B1220;
  --glass:rgba(20,28,44,.62);
  --primary:#2F5BFF;
  --primary-soft:rgba(47,91,255,.16);
  --mint:#4BE3C0;
  --mint-soft:rgba(75,227,192,.12);
  --orange:#FF7A45;
  --text:#EAF0FF;
  --muted:#9AA9C4;
  --dim:#6B7A96;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:16px;
  --shadow-card:0 20px 60px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.10);
  --shadow-glow:0 0 0 1px rgba(47,91,255,.55), 0 10px 34px rgba(47,91,255,.38);
  --font-sans:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --s1:8px; --s2:16px; --s3:24px; --s4:32px; --s5:48px; --s6:72px; --s7:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(circle at 12% -10%,rgba(47,91,255,.20),transparent 42%),
    radial-gradient(circle at 88% 8%,rgba(75,227,192,.12),transparent 44%);
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:var(--mint);text-decoration:none;transition:color .12s ease-out}
a:hover{color:#8BF3E2}
p{margin:0 0 var(--s2)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.32;letter-spacing:.01em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit}
::selection{background:rgba(75,227,192,.28);color:#fff}
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto}
.section{position:relative;z-index:1;padding:var(--s6) 0}
.section-tight{padding:var(--s5) 0}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--mint);margin-bottom:var(--s2);
}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--mint);border-radius:2px}
.section-head{max-width:720px;margin-bottom:var(--s4)}
.section-head h2{font-size:28px}
.section-head p{color:var(--muted);margin-top:12px;margin-bottom:0;font-size:15.5px}
.lead{color:var(--muted);font-size:16.5px}

/* ================= 按钮 ================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .12s ease-out,box-shadow .12s ease-out,background .12s ease-out,border-color .12s ease-out,color .12s ease-out;
  white-space:nowrap;line-height:1;
}
.btn:focus-visible{outline:2px solid var(--mint);outline-offset:3px}
.btn-primary{
  background:linear-gradient(180deg,#FF915F,#FF7A45);
  color:#1A0C05;
  box-shadow:0 10px 28px rgba(255,122,69,.30);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 36px rgba(255,122,69,.44);color:#1A0C05}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:rgba(20,28,44,.60);
  border-color:rgba(47,91,255,.45);
  color:var(--text);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--mint);color:#fff;box-shadow:0 12px 28px rgba(75,227,192,.18)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}

/* ================= 导航 ================= */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,20,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{
  background:rgba(7,11,20,.94);
  border-bottom-color:var(--line);
  box-shadow:0 14px 40px rgba(0,0,0,.46);
}
.header-inner{display:flex;align-items:center;gap:20px;min-height:64px}
.brand{display:inline-flex;align-items:center;gap:8px;color:var(--text);font-weight:700;font-size:17px;letter-spacing:.02em;flex:0 0 auto}
.brand:hover{color:var(--text)}
.brand-dot{width:10px;height:10px;border-radius:50%;background:var(--mint);box-shadow:0 0 12px rgba(75,227,192,.9);flex:0 0 auto}
.brand-tag{
  font-size:11px;font-weight:600;color:var(--mint);
  border:1px solid rgba(75,227,192,.45);
  padding:2px 8px;border-radius:999px;letter-spacing:.04em;white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:2px;flex:1 1 auto;justify-content:center}
.nav-links a{
  position:relative;color:var(--muted);font-size:15px;padding:8px 12px;border-radius:8px;
  transition:color .12s ease-out;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .15s ease-out,background .15s ease-out;
}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--text)}
.nav-links a.is-active::after{transform:scaleX(1);background:var(--mint)}
.nav-links a:focus-visible{outline:2px solid var(--mint);outline-offset:2px}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.status-chip{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--mint);
  background:rgba(75,227,192,.08);border:1px solid rgba(75,227,192,.28);
  padding:5px 10px;border-radius:999px;white-space:nowrap;
}
.status-chip i{width:6px;height:6px;border-radius:50%;background:var(--mint);box-shadow:0 0 8px rgba(75,227,192,.9);animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.30}}
.meta-chip{
  font-family:var(--font-mono);font-size:12px;color:var(--muted);
  border:1px solid var(--line);background:rgba(14,21,36,.72);
  padding:5px 10px;border-radius:999px;white-space:nowrap;
}
.meta-chip b{color:var(--mint);font-weight:600}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(14,21,36,.85);color:var(--text);
  cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle:focus-visible{outline:2px solid var(--mint);outline-offset:2px}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
  transition:transform .2s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-drawer{
  position:fixed;left:0;right:0;top:64px;bottom:0;z-index:55;
  background:rgba(7,11,20,.98);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  padding:24px;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity .22s ease-out,transform .22s ease-out,visibility .22s;
  overflow-y:auto;
}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 4px;color:var(--text);font-size:17px;font-weight:600;
  border-bottom:1px solid var(--line);
}
.mobile-drawer a.drawer-link.is-active{color:var(--mint)}
.mobile-drawer .drawer-cta{margin-top:var(--s3)}
.mobile-drawer .drawer-status{display:flex;gap:10px;margin-top:var(--s3);flex-wrap:wrap}

/* ================= 面包屑 ================= */
.crumb{position:relative;z-index:1;padding:20px 0 0;font-size:13px;color:var(--dim)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--mint)}
.crumb li:not(:last-child)::after{content:"/";margin-left:8px;color:rgba(255,255,255,.18)}
.crumb li[aria-current]{color:var(--mint)}

/* ================= 页头横幅 ================= */
.page-hero{
  position:relative;z-index:1;margin-top:20px;
  min-height:280px;display:flex;align-items:center;
  padding:56px 0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-radius:0;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(7,11,20,.94) 18%,rgba(7,11,20,.72) 62%,rgba(7,11,20,.88) 100%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(circle at 84% 22%,rgba(75,227,192,.22),transparent 46%),
    linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:auto,56px 56px,56px 56px;
}
.page-hero .hero-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:var(--s4);width:100%}
.page-hero .hero-copy{max-width:680px}
.page-hero h1{font-size:36px;letter-spacing:.01em}
.page-hero h1 .accent{color:var(--mint)}
.page-hero .hero-sub{margin-top:14px;margin-bottom:0;color:var(--muted);font-size:16.5px;max-width:600px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12.5px;color:var(--muted);
  background:rgba(14,21,36,.72);border:1px solid var(--line);
  padding:6px 12px;border-radius:999px;
}
.badge b{color:var(--mint);font-weight:600}
.hero-side{flex:0 0 auto;display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.hero-side .back-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;color:var(--muted);border:1px solid var(--line);
  padding:10px 16px;border-radius:var(--radius-btn);background:rgba(14,21,36,.7);
  transition:border-color .12s ease-out,color .12s ease-out,transform .12s ease-out;
}
.hero-side .back-link:hover{color:var(--text);border-color:rgba(75,227,192,.5);transform:translateY(-2px)}
.hero-side .back-link:focus-visible{outline:2px solid var(--mint);outline-offset:3px}

/* ================= 状态数据带 ================= */
.stat-strip{
  position:relative;z-index:2;
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;margin-top:var(--s5);
  box-shadow:var(--shadow-card);
}
.stat-strip .stat{
  background:rgba(14,21,36,.86);
  padding:24px 22px;
}
.stat-strip .stat span{display:block;font-size:12.5px;color:var(--dim);letter-spacing:.06em}
.stat-strip .stat strong{
  display:block;margin-top:8px;font-family:var(--font-mono);font-size:24px;color:var(--text);font-weight:600;
}
.stat-strip .stat strong em{font-style:normal;color:var(--mint)}

/* ================= 阅读说明 ================= */
.note-grid{display:flex;flex-wrap:wrap;gap:var(--s4);align-items:flex-start}
.note-aside{flex:1 1 300px;max-width:380px}
.note-aside h2{font-size:26px}
.note-aside p{color:var(--muted);margin-top:14px;font-size:15.5px}
.note-aside .btn{margin-top:var(--s2)}
.note-cards{flex:2 1 520px;display:grid;gap:16px}
.note-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 26px;box-shadow:var(--shadow-card);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  transition:border-color .15s ease-out,transform .15s ease-out;
}
.note-card:hover{border-color:rgba(47,91,255,.4);transform:translateY(-3px)}
.note-card h3{font-size:17px;display:flex;align-items:center;gap:10px}
.note-card h3 .idx{
  font-family:var(--font-mono);font-size:12px;color:var(--mint);
  border:1px solid rgba(75,227,192,.4);border-radius:6px;padding:1px 7px;
}
.note-card p{margin:10px 0 0;color:var(--muted);font-size:14.5px;line-height:1.7}

/* ================= 时间轴 ================= */
.timeline-wrap{max-width:880px}
.timeline{position:relative;margin-top:var(--s4)}
.tl-item{position:relative;padding:0 0 32px 44px}
.tl-item::before{
  content:"";position:absolute;left:9px;top:26px;bottom:-4px;width:2px;
  background:linear-gradient(180deg,rgba(47,91,255,.55),rgba(75,227,192,.18));
}
.tl-item:last-child{padding-bottom:0}
.tl-item:last-child::before{display:none}
.tl-marker{
  position:absolute;left:0;top:14px;width:20px;height:20px;border-radius:50%;
  background:var(--bg);border:2px solid rgba(75,227,192,.55);
  box-shadow:0 0 0 4px rgba(75,227,192,.08),0 0 18px rgba(75,227,192,.45);
  transition:box-shadow .2s ease-out,border-color .2s ease-out;
}
.tl-item.is-latest .tl-marker{
  border-color:var(--orange);
  box-shadow:0 0 0 5px rgba(255,122,69,.12),0 0 22px rgba(255,122,69,.65);
}
.tl-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 26px;box-shadow:var(--shadow-card);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  transition:border-color .15s ease-out,transform .15s ease-out;
}
.tl-card:hover{border-color:rgba(47,91,255,.42);transform:translateY(-3px)}
.tl-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:12px}
.tl-date{
  font-family:var(--font-mono);font-size:13px;letter-spacing:.04em;
  color:var(--mint);background:var(--mint-soft);border:1px solid rgba(75,227,192,.24);
  padding:3px 10px;border-radius:999px;
}
.tl-ver{
  font-family:var(--font-mono);font-size:13px;color:var(--text);
  background:rgba(47,91,255,.16);border:1px solid rgba(47,91,255,.42);
  padding:3px 10px;border-radius:999px;
}
.tl-latest-tag{
  font-size:11.5px;color:var(--orange);border:1px solid rgba(255,122,69,.45);
  background:rgba(255,122,69,.10);padding:3px 9px;border-radius:999px;letter-spacing:.06em;
}
.tl-card h3{font-size:18px}
.tl-card p{margin:10px 0 0;color:var(--muted);font-size:14.8px;line-height:1.8}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag{
  font-size:12.5px;color:var(--muted);
  background:rgba(14,21,36,.85);border:1px solid var(--line);
  padding:4px 11px;border-radius:999px;
}
.tag.mint{color:var(--mint);border-color:rgba(75,227,192,.3);background:rgba(75,227,192,.08)}

/* ================= 版本号规则 ================= */
.rules-grid{display:flex;flex-wrap:wrap;gap:var(--s4);align-items:flex-start}
.rules-left{flex:1 1 320px;max-width:420px}
.rules-left h2{font-size:26px}
.rules-left p{color:var(--muted);margin-top:14px;font-size:15.5px}
.rules-right{flex:2 1 520px}
.rule-list{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card)}
.rule-row{
  display:grid;grid-template-columns:132px 1fr;gap:20px;
  background:rgba(14,21,36,.9);padding:20px 22px;
  transition:background .15s ease-out;
}
.rule-row:hover{background:rgba(20,28,44,.95)}
.rule-row dt{
  font-family:var(--font-mono);font-size:13.5px;color:var(--mint);letter-spacing:.04em;
  align-self:start;padding-top:2px;
}
.rule-row dd{margin:0;color:var(--muted);font-size:14.8px;line-height:1.78}
.rule-row dd b{color:var(--text);font-weight:600}

/* ================= FAQ ================= */
.faq-grid{display:flex;flex-wrap:wrap;gap:var(--s4);align-items:flex-start}
.faq-aside{flex:1 1 280px;max-width:340px;position:sticky;top:96px}
.faq-aside h2{font-size:26px}
.faq-aside p{color:var(--muted);margin-top:14px;font-size:15px}
.faq-aside .btn{margin-top:var(--s2)}
.faq-list{flex:2 1 540px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{margin:0}
.faq-toggle{
  display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;
  padding:20px 4px 20px 0;background:none;border:0;border-left:3px solid transparent;
  color:var(--text);font-size:16.5px;font-weight:600;text-align:left;cursor:pointer;
  transition:color .12s ease-out,border-color .12s ease-out,padding-left .12s ease-out;
}
.faq-toggle:hover{color:var(--mint)}
.faq-toggle:focus-visible{outline:2px solid var(--mint);outline-offset:-2px;border-radius:6px}
.faq-icon{
  position:relative;flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  border:1px solid var(--line-strong);
  transition:transform .2s ease-out,border-color .2s ease-out,background .2s ease-out;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--muted);border-radius:2px;
  transform:translate(-50%,-50%);transition:background .2s ease-out,opacity .2s ease-out;
}
.faq-icon::before{width:10px;height:2px}
.faq-icon::after{width:2px;height:10px}
.faq-item.is-open .faq-toggle{border-left-color:var(--primary);padding-left:14px;color:var(--text)}
.faq-item.is-open .faq-icon{transform:rotate(180deg);border-color:rgba(75,227,192,.6);background:rgba(75,227,192,.10)}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:var(--mint)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{padding:0 32px 22px 14px;color:var(--muted);font-size:15px;line-height:1.82}
.faq-a p{margin:0}

/* ================= CTA 带 ================= */
.cta-band{padding:var(--s6) 0 var(--s7)}
.cta-panel{
  position:relative;overflow:hidden;
  background:linear-gradient(140deg,rgba(20,28,44,.92),rgba(11,18,32,.86));
  border:1px solid rgba(47,91,255,.34);border-radius:24px;
  padding:48px 44px;
  box-shadow:var(--shadow-glow),var(--shadow-card);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--s4);
}
.cta-panel::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(75,227,192,.22),transparent 68%);pointer-events:none;
}
.cta-copy{position:relative;z-index:1;max-width:560px}
.cta-copy h2{font-size:26px}
.cta-copy p{color:var(--muted);margin:12px 0 0;font-size:15.5px}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:12px}

/* ================= 页脚 ================= */
.site-footer{position:relative;z-index:1;border-top:1px solid var(--line);background:rgba(7,11,20,.86);padding:56px 0 0}
.footer-col{padding-bottom:32px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{color:var(--dim);font-size:14px;max-width:280px;line-height:1.75}
.footer-col h4{font-size:14px;color:var(--text);letter-spacing:.06em;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col ul li{color:var(--dim);font-size:14px;line-height:1.7}
.footer-col ul a{color:var(--muted);font-size:14px}
.footer-col ul a:hover{color:var(--mint)}
.footer-col ul a:focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:4px}
.footer-col p{color:var(--dim);font-size:13.5px;line-height:1.75;margin:16px 0 0}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid var(--line);padding:20px 0 24px;margin-top:8px;
  font-size:13px;color:var(--dim);
}
.footer-bottom a{color:var(--muted)}
.footer-bottom a:hover{color:var(--mint)}

/* ================= 回到顶部 ================= */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:48px;height:48px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(20,28,44,.86);border:1px solid var(--line-strong);color:var(--muted);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  cursor:pointer;opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease-out,transform .2s ease-out,color .12s ease-out,border-color .12s ease-out;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{color:var(--mint);border-color:rgba(75,227,192,.55)}
.to-top:focus-visible{outline:2px solid var(--mint);outline-offset:3px}

/* ================= 响应式 ================= */
@media screen and (max-width:1199px){
  .nav-links a{padding:8px 9px;font-size:14.5px}
  .status-chip{display:none}
}
@media screen and (max-width:1023px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .meta-chip{display:none}
  .header-inner{min-height:56px}
  .mobile-drawer{top:56px}
  .page-hero{min-height:240px;padding:44px 0}
  .page-hero h1{font-size:30px}
  .section{padding:56px 0}
  .cta-band{padding:56px 0 64px}
  .faq-aside{position:static;max-width:none}
  .stat-strip{grid-template-columns:1fr 1fr}
  .stat-strip .stat:last-child{grid-column:1 / -1}
}
@media screen and (max-width:767px){
  .page-hero h1{font-size:26px}
  .section-head h2,.note-aside h2,.rules-left h2,.faq-aside h2,.cta-copy h2{font-size:22px}
  .cta-panel{padding:32px 24px;border-radius:20px}
  .rule-row{grid-template-columns:1fr;gap:8px}
  .tl-card{padding:20px}
  .faq-a{padding-right:12px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media screen and (max-width:519px){
  .grid-container{padding-left:16px;padding-right:16px}
  .brand{font-size:15.5px;gap:6px}
  .brand-tag{display:none}
  .tl-item{padding-left:34px}
  .detail,.note-card,.tl-card{padding:18px}
  .cta-actions .btn{width:100%}
  .hero-side .back-link{width:100%;justify-content:center}
  .to-top{right:16px;bottom:16px;width:44px;height:44px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category4 */
:root{
  --bg:#070B14;
  --bg-2:#0E1524;
  --panel:rgba(20,28,44,.62);
  --primary:#2F5BFF;
  --primary-soft:rgba(47,91,255,.14);
  --mint:#4BE3C0;
  --orange:#FF7A45;
  --text:#EAF0FF;
  --text-2:#9AA9C4;
  --text-3:#6B7A96;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --r-card:18px;
  --r-btn:12px;
  --r-img:16px;
  --shadow-card:0 20px 60px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.10);
  --shadow-btn:0 0 0 1px rgba(47,91,255,.55), 0 10px 34px rgba(47,91,255,.38);
  --font-sans:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --max:1200px;
  --s1:8px; --s2:16px; --s3:24px; --s4:32px; --s5:48px; --s6:72px; --s7:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.7;
  -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 420px at 80% -10%, rgba(75,227,192,.13), transparent 66%),
    radial-gradient(760px 540px at 6% 6%, rgba(47,91,255,.16), transparent 68%),
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px) 0 0/64px 64px,
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px) 0 0/64px 64px;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--primary);text-decoration:none}
a:hover{color:#5C81FF}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em}
p{margin:0 0 var(--s2)}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--mint);outline-offset:3px;border-radius:6px}
::selection{background:rgba(47,91,255,.45);color:#fff}

/* Foundation overrides */
body,p,li,td,th,h1,h2,h3,h4,input,textarea,select,button{font-family:var(--font-sans)}
.grid-container{max-width:var(--max);width:100%;padding-left:var(--s3);padding-right:var(--s3)}
a{color:var(--primary)}
.button,.btn{font-family:var(--font-sans)}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:transform .12s ease-out, box-shadow .18s ease-out, background .18s ease-out, border-color .18s ease-out, color .18s ease-out;
  white-space:nowrap;
}
.btn:active{transform:translateY(0)}
.btn-primary{
  background:linear-gradient(180deg,#FF8A5C,#FF6A31);
  color:#1A0B04;
  box-shadow:0 8px 26px rgba(255,122,69,.32);
}
.btn-primary:hover{color:#1A0B04;transform:translateY(-2px);box-shadow:0 12px 32px rgba(255,122,69,.46)}
.btn-solid{
  background:linear-gradient(180deg,#4A70FF,#2F5BFF);
  color:#fff;box-shadow:var(--shadow-btn);
}
.btn-solid:hover{color:#fff;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,91,255,.7), 0 14px 40px rgba(47,91,255,.5)}
.btn-ghost{
  background:rgba(255,255,255,.04);
  color:var(--text);
  border-color:var(--line-strong);
  backdrop-filter:blur(8px);
}
.btn-ghost:hover{color:#fff;border-color:rgba(75,227,192,.55);background:rgba(75,227,192,.08);transform:translateY(-2px)}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;border-radius:10px}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,20,.74);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
.site-header.is-scrolled{background:rgba(7,11,20,.92);box-shadow:0 8px 30px rgba(0,0,0,.4)}
.header-inner{display:flex;align-items:center;gap:var(--s2);height:64px}
.brand{display:inline-flex;align-items:center;gap:8px;text-decoration:none;color:var(--text);font-weight:700;white-space:nowrap}
.brand:hover{color:var(--text)}
.brand-dot{width:10px;height:10px;border-radius:50%;background:var(--mint);box-shadow:0 0 12px rgba(75,227,192,.9);flex:0 0 auto}
.brand-name{font-size:18px;letter-spacing:.02em}
.brand-tag{
  font-size:11px;font-weight:500;padding:3px 9px;border-radius:999px;
  border:1px solid rgba(75,227,192,.4);color:var(--mint);background:rgba(75,227,192,.1);
  letter-spacing:.02em;
}
.nav-links{display:flex;align-items:center;gap:2px;flex:1 1 auto;justify-content:center}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;min-height:44px;
  padding:0 12px;font-size:14.5px;color:var(--text-2);border-radius:8px;
  transition:color .15s ease, background .15s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .18s ease-out;
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--text)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.status-pill{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;
  color:var(--mint);border:1px solid rgba(75,227,192,.35);background:rgba(75,227,192,.08);
  padding:5px 11px;border-radius:999px;white-space:nowrap;
}
.status-pill .dot{width:6px;height:6px;border-radius:50%;background:var(--mint);animation:pulse 2.2s infinite}
@keyframes pulse{
  0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(75,227,192,.55)}
  50%{opacity:.55;box-shadow:0 0 0 6px rgba(75,227,192,0)}
}
.count-pill{
  font-family:var(--font-mono);font-size:12.5px;color:var(--text-2);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  padding:5px 11px;border-radius:999px;white-space:nowrap;letter-spacing:.02em;
}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line-strong);
  background:rgba(255,255,255,.04);cursor:pointer;position:relative;
}
.nav-toggle span,.nav-toggle::before,.nav-toggle::after{
  content:"";position:absolute;left:50%;width:18px;height:2px;border-radius:2px;
  background:var(--text);transform:translateX(-50%);transition:transform .2s ease, opacity .2s ease;
}
.nav-toggle::before{top:15px}
.nav-toggle span{top:21px}
.nav-toggle::after{top:27px}

/* ===== Page hero ===== */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.hero-veil{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(90deg, rgba(7,11,20,.94) 8%, rgba(7,11,20,.78) 52%, rgba(7,11,20,.9) 100%),
             linear-gradient(180deg, rgba(7,11,20,.35), rgba(7,11,20,.85));
}
.hero-inner{position:relative;z-index:2;padding-top:var(--s5);padding-bottom:var(--s5);min-height:280px;display:flex;flex-direction:column;justify-content:center}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:var(--s3)}
.crumbs a{color:var(--text-2)}
.crumbs a:hover{color:var(--mint)}
.crumbs .sep{color:var(--text-3)}
.crumbs .now{color:var(--mint)}
.page-hero h1{
  font-size:clamp(25px,3.4vw,40px);line-height:1.28;max-width:840px;margin-bottom:var(--s2);
  text-shadow:0 12px 40px rgba(0,0,0,.55);
}
.hero-sub{color:var(--text-2);font-size:16px;max-width:660px;margin-bottom:var(--s4)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ===== Sections ===== */
.section{padding:var(--s6) 0}
.section--tight{padding:var(--s5) 0}
.section-head{max-width:760px;margin-bottom:var(--s4)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--mint);
  margin-bottom:12px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--mint);opacity:.7}
.section-head h2{
  position:relative;padding-left:16px;font-size:clamp(22px,2.5vw,30px);margin-bottom:12px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 14px rgba(47,91,255,.85);
}
.section-head p{color:var(--text-2);font-size:15.5px;margin:0}

/* ===== Compare table ===== */
.compare-scroll{
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  background:rgba(14,21,36,.6);
}
.compare{
  display:grid;
  grid-template-columns:1.15fr 1fr 1.06fr 1fr;
  min-width:840px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  background:rgba(14,21,36,.55);
}
.cell{
  padding:15px 18px;
  font-size:14.5px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:8px;
}
.cell.head{
  background:rgba(255,255,255,.04);
  color:var(--text);font-weight:700;font-size:15px;
  border-bottom:1px solid var(--line-strong);
  min-height:64px;
}
.cell.head .hd-note{
  display:block;font-family:var(--font-mono);font-size:11.5px;font-weight:400;
  color:var(--text-3);letter-spacing:.04em;margin-top:2px;
}
.cell.label{
  color:var(--text);font-weight:600;background:rgba(255,255,255,.025);
  font-size:14.5px;
}
.cell.accent{
  background:rgba(47,91,255,.11);
  color:#D8E2FF;
  box-shadow:inset 1px 0 0 rgba(47,91,255,.4), inset -1px 0 0 rgba(47,91,255,.4);
}
.cell.accent.head{
  background:linear-gradient(180deg, rgba(47,91,255,.3), rgba(47,91,255,.14));
  color:#fff;
}
.cell .mono{font-family:var(--font-mono);font-size:13.5px;letter-spacing:.01em}
.compare .cell:nth-last-child(-n+4){border-bottom:0}
.legend{display:flex;flex-wrap:wrap;gap:18px;margin-top:var(--s3);font-size:13px;color:var(--text-3)}
.legend span{display:inline-flex;align-items:center;gap:8px}
.legend i{width:10px;height:10px;border-radius:3px;display:inline-block}
.legend .k1{background:rgba(47,91,255,.55)}
.legend .k2{background:rgba(75,227,192,.6)}

/* ===== Device cards ===== */
.device-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:var(--s3)}
.device-card{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  overflow:hidden;
  transition:transform .18s ease-out, border-color .18s ease-out;
}
.device-card:hover{transform:translateY(-3px);border-color:rgba(47,91,255,.4)}
.device-card--wide{grid-column:1 / -1;display:grid;grid-template-columns:1.1fr .9fr;align-items:stretch}
.device-media{position:relative;overflow:hidden;background:var(--bg-2)}
.device-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;transition:transform .35s ease}
.device-card:hover .device-media img{transform:scale(1.03)}
.device-card--wide .device-media img{aspect-ratio:16/11;height:100%}
.device-body{padding:var(--s3)}
.device-body h3{font-size:18px;margin-bottom:10px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:500;padding:4px 10px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line-strong);color:var(--text-2);
  margin-bottom:12px;
}
.tag.tag--mint{color:var(--mint);border-color:rgba(75,227,192,.4);background:rgba(75,227,192,.1)}
.tag.tag--indigo{color:#A9BCFF;border-color:rgba(47,91,255,.45);background:rgba(47,91,255,.14)}
.spec-list li{
  position:relative;padding-left:20px;margin-bottom:10px;
  font-size:14.5px;color:var(--text-2);line-height:1.65;
}
.spec-list li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
  background:var(--mint);opacity:.9;
}
.spec-list li strong{color:var(--text);font-weight:600}

/* ===== Checklist + permissions ===== */
.check-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:var(--s3);align-items:start}
.check-panel{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:var(--s3);box-shadow:var(--shadow-card);backdrop-filter:blur(14px);
}
.check-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed rgba(255,255,255,.09)}
.check-item:last-child{border-bottom:0;padding-bottom:0}
.check-item:first-child{padding-top:4px}
.check-num{
  font-family:var(--font-mono);font-size:13px;color:var(--mint);
  border:1px solid rgba(75,227,192,.35);background:rgba(75,227,192,.08);
  width:32px;height:32px;border-radius:9px;display:flex;align-items:center;justify-content:center;
  flex:0 0 auto;
}
.check-item h3{font-size:15.5px;margin-bottom:4px}
.check-item p{font-size:14px;color:var(--text-2);margin:0}
.perm-panel{
  background:linear-gradient(180deg, rgba(20,28,44,.85), rgba(14,21,36,.75));
  border:1px solid var(--line-strong);border-radius:var(--r-card);
  padding:var(--s3);box-shadow:var(--shadow-card);
  position:sticky;top:88px;
}
.perm-panel h3{font-size:16px;margin-bottom:6px}
.perm-panel > p{font-size:13.5px;color:var(--text-3);margin-bottom:var(--s2)}
.perm-row{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 0;border-bottom:1px solid var(--line);font-size:14px;
}
.perm-row:last-of-type{border-bottom:0}
.perm-name{color:var(--text)}
.perm-state{
  font-size:12px;font-family:var(--font-mono);padding:3px 10px;border-radius:999px;
  border:1px solid var(--line-strong);color:var(--text-2);white-space:nowrap;
}
.perm-state.ok{color:var(--mint);border-color:rgba(75,227,192,.4);background:rgba(75,227,192,.09)}
.perm-state.warn{color:var(--orange);border-color:rgba(255,122,69,.4);background:rgba(255,122,69,.09)}
.perm-note{font-size:12.5px;color:var(--text-3);margin:var(--s2) 0 0;line-height:1.7}

/* ===== FAQ ===== */
.faq-layout{display:grid;grid-template-columns:.9fr 2.1fr;gap:var(--s5);align-items:start}
.faq-aside{position:sticky;top:88px}
.faq-aside h2{position:relative;padding-left:16px;font-size:clamp(21px,2.3vw,27px);margin-bottom:12px}
.faq-aside h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 14px rgba(47,91,255,.85);
}
.faq-aside p{color:var(--text-2);font-size:14.5px;margin-bottom:var(--s3)}
.faq-item{
  border-bottom:1px solid var(--line);
  border-left:3px solid transparent;
  padding-left:16px;
  transition:border-color .2s ease, background .2s ease;
}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item[open]{border-left-color:var(--primary);background:rgba(47,91,255,.05)}
.faq-item summary{
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:18px 0;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--text);
  transition:color .15s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:#B9CBFF}
.faq-item summary::after{
  content:"";flex:0 0 auto;width:9px;height:9px;margin-top:8px;
  border-right:2px solid var(--mint);border-bottom:2px solid var(--mint);
  transform:rotate(45deg);transition:transform .2s ease;
}
.faq-item[open] summary::after{transform:rotate(-135deg)}
.faq-a{padding:0 0 18px;color:var(--text-2);font-size:14.5px;line-height:1.8;max-width:720px}

/* ===== CTA band ===== */
.cta-band{padding:var(--s5) 0 var(--s6)}
.cta-panel{
  position:relative;overflow:hidden;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--s4);
  padding:var(--s4) var(--s4);
  border-radius:24px;
  border:1px solid rgba(47,91,255,.35);
  background:
    radial-gradient(520px 260px at 88% 0%, rgba(75,227,192,.18), transparent 70%),
    linear-gradient(135deg, rgba(47,91,255,.22), rgba(14,21,36,.9) 62%);
  box-shadow:0 24px 70px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.12);
}
.cta-panel h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:8px}
.cta-panel p{color:var(--text-2);font-size:14.5px;margin:0;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ===== Footer ===== */
.site-footer{
  border-top:1px solid var(--line);
  background:rgba(9,14,24,.85);
  padding-top:var(--s5);
  font-size:14px;
}
.footer-col{padding:0 var(--s2) var(--s4);min-width:0}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{color:var(--text-3);font-size:13.5px;line-height:1.75;margin:0;max-width:280px}
.footer-col h4{
  font-size:14px;color:var(--text);margin-bottom:14px;letter-spacing:.02em;
}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{color:var(--text-2);font-size:13.5px;transition:color .15s ease}
.footer-col ul a:hover{color:var(--mint)}
.footer-col ul li{color:var(--text-2);font-size:13.5px}
.footer-col > p{color:var(--text-3);font-size:12.5px;line-height:1.7;margin-top:14px}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid var(--line);
  padding:18px 0 22px;
  color:var(--text-3);font-size:12.5px;
}
.footer-bottom a{color:var(--text-2)}
.footer-bottom a:hover{color:var(--mint)}

/* ===== Back to top ===== */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:48px;height:48px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(20,28,44,.8);border:1px solid var(--line-strong);
  color:var(--text);backdrop-filter:blur(10px);
  box-shadow:0 10px 30px rgba(0,0,0,.45);
  transition:transform .15s ease, border-color .15s ease, color .15s ease;
}
.to-top:hover{transform:translateY(-3px);border-color:rgba(75,227,192,.55);color:var(--mint)}
.to-top svg{width:16px;height:16px}

/* ===== Responsive ===== */
@media (max-width:1199px){
  .grid-container{max-width:100%}
}
@media (max-width:1023px){
  .header-inner{height:56px}
  .brand-name{font-size:16px}
  .brand-tag{display:none}
  .nav-toggle{display:block;order:3;margin-left:auto}
  .nav-actions{margin-left:auto;gap:8px}
  .status-pill,.count-pill{display:none}
  .nav-links{
    position:fixed;left:0;right:0;top:56px;bottom:0;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:4px;padding:var(--s3) var(--s3) var(--s5);
    background:rgba(7,11,20,.98);
    backdrop-filter:blur(18px);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .22s ease, transform .22s ease, visibility .22s;
    overflow-y:auto;
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:none}
  .nav-links a{font-size:16px;padding:14px 12px;justify-content:space-between;border-bottom:1px solid var(--line)}
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:var(--mint)}
  body.nav-open{overflow:hidden}
  .device-grid{grid-template-columns:1fr}
  .device-card--wide{grid-template-columns:1fr}
  .check-grid{grid-template-columns:1fr}
  .perm-panel{position:static}
  .faq-layout{grid-template-columns:1fr;gap:var(--s3)}
  .faq-aside{position:static}
  .hero-inner{min-height:240px;padding-top:var(--s4);padding-bottom:var(--s4)}
}
@media (max-width:639px){
  :root{--s6:56px;--s5:40px}
  .grid-container{padding-left:20px;padding-right:20px}
  .section{padding:56px 0}
  .page-hero h1{font-size:26px}
  .hero-sub{font-size:14.5px;margin-bottom:var(--s3)}
  .hero-actions .btn{flex:1 1 100%}
  .cell{padding:13px 14px;font-size:13.5px}
  .cell.head{min-height:56px;font-size:14px}
  .cta-panel{padding:var(--s3);border-radius:18px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .footer-col{padding-left:0;padding-right:0}
  .to-top{right:16px;bottom:16px;width:44px;height:44px}
  .faq-item summary{font-size:15px}
  .device-body{padding:20px}
}

/* roulang page: category5 */
:root{
  --bg:#070B14;
  --bg-2:#0E1524;
  --bg-3:#0B1220;
  --panel:rgba(20,28,44,.62);
  --primary:#2F5BFF;
  --mint:#4BE3C0;
  --orange:#FF7A45;
  --text:#EAF0FF;
  --text-2:#9AA9C4;
  --text-3:#6B7A96;
  --line:rgba(255,255,255,.08);
  --r-card:18px;
  --r-btn:12px;
  --r-img:16px;
  --shadow-card:0 20px 60px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.10);
  --shadow-btn:0 0 0 1px rgba(47,91,255,.55), 0 10px 34px rgba(47,91,255,.38);
  --sans:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(620px 420px at 10% -4%, rgba(47,91,255,.20), transparent 70%),
    radial-gradient(700px 520px at 92% 4%, rgba(75,227,192,.10), transparent 72%);
}
header,main,footer{position:relative;z-index:1;}
a{color:inherit;text-decoration:none;transition:color .18s ease-out;}
img{max-width:100%;display:block;border:0;border-radius:var(--r-img);}
p{margin:0 0 1em;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:.3px;line-height:1.35;}
ul,ol{margin:0;padding:0;}
button{font-family:inherit;font-size:inherit;color:inherit;}
input,textarea,select{font-family:inherit;}
:focus-visible{outline:2px solid var(--mint);outline-offset:3px;border-radius:8px;}
::selection{background:rgba(47,91,255,.45);color:#fff;}

/* 容器 */
.grid-container{
  width:100%;
  max-width:1200px;
  margin-left:auto;
  margin-right:auto;
  padding-left:24px;
  padding-right:24px;
}

/* 按钮体系 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:700;
  letter-spacing:.3px;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .12s ease-out, box-shadow .2s ease-out, background .2s ease-out, border-color .2s ease-out, color .2s ease-out;
}
.btn:hover{transform:translateY(-2px);}
.btn:active{transform:translateY(0);}
.btn-orange{
  background:linear-gradient(135deg,#FF7A45 0%,#FF9B4D 100%);
  color:#1B0D05;
  box-shadow:0 10px 30px rgba(255,122,69,.28);
}
.btn-orange:hover{box-shadow:0 14px 40px rgba(255,122,69,.42);}
.btn-ghost{
  background:rgba(255,255,255,.04);
  border-color:rgba(255,255,255,.16);
  color:var(--text);
}
.btn-ghost:hover{border-color:rgba(75,227,192,.55);color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.35);}
.btn-outline{
  background:rgba(47,91,255,.12);
  border-color:rgba(47,91,255,.5);
  color:#CBD8FF;
}
.btn-outline:hover{box-shadow:var(--shadow-btn);color:#fff;}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;border-radius:10px;}

/* 顶部导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,11,20,.74);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .2s ease-out, box-shadow .2s ease-out;
}
.site-header.is-scrolled{
  background:rgba(7,11,20,.92);
  box-shadow:0 10px 34px rgba(0,0,0,.42);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:64px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:none;
  color:var(--text);
}
.brand-dot{
  width:10px;height:10px;border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 0 4px rgba(75,227,192,.14);
  flex:none;
}
.brand-name{font-size:18px;font-weight:800;letter-spacing:.6px;}
.brand-tag{
  font-size:11px;
  line-height:1;
  padding:5px 10px;
  border-radius:999px;
  background:rgba(75,227,192,.10);
  border:1px solid rgba(75,227,192,.28);
  color:var(--mint);
  white-space:nowrap;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:2px;
  flex:1;
  margin-left:6px;
}
.nav-links a{
  position:relative;
  padding:8px 12px;
  font-size:14px;
  color:var(--text-2);
  border-radius:8px;
  white-space:nowrap;
  transition:color .18s ease-out;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:1px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s ease-out;
}
.nav-links a:hover{color:var(--text);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:#fff;}
.nav-links a.is-active::after{transform:scaleX(1);}
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
}
.status-pill{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:12px;
  padding:5px 11px;
  border-radius:999px;
  color:var(--mint);
  background:rgba(75,227,192,.08);
  border:1px solid rgba(75,227,192,.26);
  white-space:nowrap;
}
.status-pill .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--mint);
  animation:breath 2.4s ease-in-out infinite;
}
@keyframes breath{
  0%,100%{opacity:1;transform:scale(1);}
  50%{opacity:.35;transform:scale(.75);}
}
.countdown-pill{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.6px;
  padding:5px 11px;
  border-radius:999px;
  color:#C6D3F0;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  white-space:nowrap;
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  align-items:center;
  justify-content:center;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--text);
  border-radius:2px;
  position:relative;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;left:0;
  width:18px;height:2px;
  background:var(--text);
  border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 移动抽屉 */
.drawer{
  position:fixed;
  inset:0;
  z-index:90;
  padding:20px 24px 32px;
  background:rgba(7,11,20,.98);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  transform:translateX(100%);
  transition:transform .22s ease-out;
  display:flex;
  flex-direction:column;
  gap:24px;
  pointer-events:none;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);pointer-events:auto;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  cursor:pointer;
  font-size:20px;line-height:1;
}
.drawer nav{display:flex;flex-direction:column;gap:6px;}
.drawer nav a{
  padding:14px 14px;
  border-radius:12px;
  font-size:16px;
  color:var(--text-2);
  border:1px solid transparent;
}
.drawer nav a.is-active{
  color:#fff;
  background:rgba(47,91,255,.14);
  border-color:rgba(47,91,255,.38);
}
.drawer-foot{
  margin-top:auto;
  display:flex;
  flex-direction:column;
  gap:14px;
  padding-top:20px;
  border-top:1px solid var(--line);
}
.drawer-foot .status-pill{align-self:flex-start;}

/* 面包屑 */
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--mint);}
.breadcrumb .sep{opacity:.5;}

/* 分类头 */
.cat-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(104deg, rgba(7,11,20,.95) 0%, rgba(7,11,20,.82) 52%, rgba(7,11,20,.62) 100%),
    url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:radial-gradient(620px 320px at 84% 12%, rgba(75,227,192,.18), transparent 72%);
}
.cat-hero-inner{
  position:relative;
  z-index:1;
  padding:36px 0 56px;
}
.cat-hero h1{
  font-size:34px;
  line-height:1.3;
  margin:18px 0 12px;
  max-width:820px;
}
.cat-hero h1 em{
  font-style:normal;
  color:var(--mint);
}
.hero-lead{
  max-width:660px;
  font-size:15px;
  color:var(--text-2);
  margin:0 0 26px;
}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* 板块 */
.section{padding:72px 0;}
.section-tight{padding:56px 0;}
.section-head{max-width:740px;margin-bottom:32px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:2px;
  text-transform:uppercase;
  color:var(--mint);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:24px;height:1px;
  background:var(--mint);
  opacity:.6;
}
.section-title{
  font-size:26px;
  margin:0 0 12px;
}
.section-desc{
  font-size:15px;
  color:var(--text-2);
  margin:0;
}

/* 标签筛选条 */
.chip-bar{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:32px;
}
.chip{
  display:inline-flex;
  align-items:center;
  min-height:38px;
  padding:0 16px;
  border-radius:999px;
  font-size:13px;
  color:var(--text-2);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  transition:color .18s ease-out, border-color .18s ease-out, background .18s ease-out;
}
.chip.is-on{
  color:#DCE6FF;
  background:rgba(47,91,255,.14);
  border-color:rgba(47,91,255,.55);
  box-shadow:inset 0 0 0 1px rgba(47,91,255,.2);
}
.chip-mint{
  color:var(--mint);
  background:rgba(75,227,192,.08);
  border-color:rgba(75,227,192,.28);
  min-height:26px;
  padding:0 10px;
  font-size:12px;
}

/* 场景卡瀑布 */
.scene-wall{
  column-count:2;
  column-gap:24px;
}
.scene-card{
  break-inside:avoid;
  display:block;
  width:100%;
  margin:0 0 24px;
  padding:26px 24px;
  border-radius:var(--r-card);
  background:var(--panel);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  transition:transform .2s ease-out, border-color .2s ease-out, box-shadow .2s ease-out;
}
.scene-card:hover{
  transform:translateY(-3px);
  border-color:rgba(47,91,255,.42);
  box-shadow:0 24px 60px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.12);
}
.scene-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:14px;
  flex-wrap:wrap;
}
.scene-index{
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:1.5px;
  color:var(--text-3);
}
.tag-row{display:flex;gap:6px;flex-wrap:wrap;}
.scene-card h3{
  font-size:17px;
  line-height:1.5;
  color:#fff;
  margin:0 0 12px;
}
.scene-sign{
  margin:0 0 16px;
  font-size:14px;
  color:var(--text-2);
  padding-left:12px;
  border-left:2px solid rgba(75,227,192,.4);
}
.scene-list{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:10px;
  margin:0 0 16px;
}
.scene-list li{
  position:relative;
  padding-left:20px;
  font-size:14px;
  line-height:1.65;
  color:#C3CFE6;
}
.scene-list li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--mint);
  opacity:.85;
}
.scene-note{
  margin:0;
  padding-top:14px;
  border-top:1px dashed var(--line);
  font-size:13px;
  color:var(--text-3);
}

/* 自查三步 */
.check-row{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.check-card{
  position:relative;
  padding:28px 24px;
  border-radius:var(--r-card);
  background:linear-gradient(160deg, rgba(20,28,44,.92), rgba(14,21,36,.58));
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform .2s ease-out, border-color .2s ease-out;
}
.check-card:hover{transform:translateY(-3px);border-color:rgba(75,227,192,.38);}
.check-num{
  display:block;
  font-family:var(--mono);
  font-size:40px;
  line-height:1;
  margin-bottom:16px;
  color:transparent;
  -webkit-text-stroke:1px rgba(75,227,192,.55);
}
.check-card h3{font-size:17px;margin:0 0 8px;}
.check-card p{margin:0;font-size:14px;color:var(--text-2);line-height:1.7;}

/* 图文分栏 */
.split{
  display:grid;
  grid-template-columns:1.02fr .98fr;
  gap:48px;
  align-items:center;
}
.split-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:18px;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  background:var(--bg-2);
}
.split-body h2{font-size:26px;margin:0 0 14px;}
.split-body p{font-size:15px;color:var(--text-2);}
.split-list{
  list-style:none;
  display:grid;
  gap:12px;
  margin-top:22px;
}
.split-list li{
  display:flex;
  gap:12px;
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.7;
}
.split-list li::before{
  content:"";
  flex:none;
  width:8px;height:8px;
  margin-top:9px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(47,91,255,.7);
}
.split-list li b{color:var(--text);font-weight:700;}

/* FAQ */
.faq-wrap{
  display:grid;
  grid-template-columns:4fr 8fr;
  gap:48px;
  align-items:start;
}
.faq-aside{position:sticky;top:96px;}
.faq-aside h2{font-size:26px;margin:0 0 12px;}
.faq-aside p{font-size:14px;color:var(--text-2);margin:0 0 20px;}
.faq-list{display:flex;flex-direction:column;}
.faq-item{
  position:relative;
  padding-left:18px;
  border-bottom:1px solid var(--line);
}
.faq-item::before{
  content:"";
  position:absolute;
  left:0;top:16px;bottom:16px;
  width:3px;
  border-radius:3px;
  background:var(--primary);
  opacity:0;
  transition:opacity .2s ease-out;
}
.faq-item[open]::before{opacity:1;}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 0;
  cursor:pointer;
  list-style:none;
  font-size:16px;
  font-weight:700;
  color:var(--text);
  transition:color .18s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:#fff;}
.faq-ico{
  flex:none;
  position:relative;
  width:22px;height:22px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.16);
  transition:transform .22s ease-out, border-color .2s ease-out;
}
.faq-ico::before,
.faq-ico::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--mint);
  border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-ico::before{width:10px;height:1.5px;}
.faq-ico::after{width:1.5px;height:10px;transition:opacity .2s ease-out;}
.faq-item[open] .faq-ico{transform:rotate(180deg);border-color:rgba(75,227,192,.5);}
.faq-item[open] .faq-ico::after{opacity:0;}
.faq-answer{
  padding:0 0 20px;
  font-size:14.5px;
  line-height:1.85;
  color:var(--text-2);
}

/* CTA 带 */
.cta-band{
  padding:56px;
  border-radius:24px;
  background:
    radial-gradient(560px 280px at 86% 0%, rgba(75,227,192,.16), transparent 72%),
    linear-gradient(150deg, rgba(47,91,255,.22), rgba(14,21,36,.92));
  border:1px solid rgba(47,91,255,.32);
  box-shadow:0 30px 80px rgba(0,0,0,.5);
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-text h2{font-size:26px;margin:0 0 10px;}
.cta-text p{margin:0;font-size:15px;color:var(--text-2);max-width:520px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* 页脚 */
.site-footer{
  margin-top:72px;
  padding-top:56px;
  border-top:1px solid var(--line);
  background:rgba(14,21,36,.62);
}
.footer-col{margin-bottom:32px;}
.footer-col h4{
  font-size:14px;
  letter-spacing:.6px;
  margin:0 0 16px;
  color:#fff;
}
.footer-col ul{
  list-style:none;
  display:grid;
  gap:10px;
}
.footer-col ul li,
.footer-col ul a{
  font-size:13.5px;
  color:var(--text-2);
  line-height:1.6;
}
.footer-col ul a:hover{color:var(--mint);}
.footer-brand p{
  margin:16px 0 0;
  font-size:13.5px;
  color:var(--text-2);
  max-width:300px;
  line-height:1.8;
}
.footer-brand .brand{margin-bottom:4px;}
.footer-brand .brand-name{font-size:16px;}
.footer-bottom{
  margin-top:16px;
  padding:20px 0 24px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12.5px;
  color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--mint);}

/* 返回顶部 */
.to-top{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:70;
  width:48px;height:48px;
  border-radius:50%;
  display:none;
  align-items:center;
  justify-content:center;
  background:rgba(20,28,44,.82);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid var(--line);
  color:var(--text);
  cursor:pointer;
  box-shadow:0 12px 30px rgba(0,0,0,.45);
  transition:border-color .2s ease-out, transform .12s ease-out;
}
.to-top.is-visible{display:flex;}
.to-top:hover{border-color:rgba(75,227,192,.55);transform:translateY(-2px);}

/* 响应式 */
@media (max-width:1199px){
  .grid-container{max-width:100%;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .status-pill,
  .header-actions .countdown-pill{display:none;}
  .split{grid-template-columns:1fr;gap:32px;}
  .check-row{grid-template-columns:1fr;}
  .faq-wrap{grid-template-columns:1fr;gap:24px;}
  .faq-aside{position:static;}
  .cat-hero h1{font-size:28px;}
  .cta-band{padding:40px;}
}
@media (max-width:767px){
  .header-inner{height:56px;gap:12px;}
  .brand-name{font-size:16px;}
  .brand-tag{font-size:10px;padding:4px 8px;}
  .header-actions .btn-orange{display:none;}
  .cat-hero-inner{padding:28px 0 40px;}
  .cat-hero h1{font-size:25px;margin:14px 0 10px;}
  .hero-lead{font-size:14.5px;}
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
  .section-title{font-size:22px;}
  .scene-wall{column-count:1;}
  .scene-card{padding:22px 18px;}
  .split-body h2{font-size:22px;}
  .cta-band{padding:32px 24px;border-radius:18px;}
  .cta-text h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .to-top{right:16px;bottom:16px;width:44px;height:44px;}
}
@media (max-width:520px){
  .grid-container{padding-left:18px;padding-right:18px;}
  .faq-item summary{font-size:15px;}
  .chip{min-height:36px;padding:0 14px;font-size:12.5px;}
  .scene-card h3{font-size:16px;}
}