/* roulang page: index */
:root{
  --bg:#060B16;
  --bg-soft:#0A1122;
  --panel:#0C1425;
  --glass:rgba(255,255,255,.05);
  --glass-strong:rgba(255,255,255,.08);
  --line:rgba(255,255,255,.08);
  --line-soft:rgba(255,255,255,.06);
  --primary:#12E0B8;
  --primary-dim:rgba(18,224,184,.14);
  --primary-line:rgba(18,224,184,.35);
  --purple:#7C5CFF;
  --purple-dim:rgba(124,92,255,.16);
  --amber:#FFB43D;
  --amber-dim:rgba(255,180,61,.14);
  --danger:#FF5C7A;
  --danger-dim:rgba(255,92,122,.14);
  --text:#E8F1FF;
  --muted:#9BA9C0;
  --dim:#64748B;
  --r-sm:12px;
  --r-md:18px;
  --r-lg:24px;
  --shadow:0 12px 32px rgba(0,0,0,.35);
  --shadow-in:inset 0 1px 0 rgba(255,255,255,.06);
  --glow:0 8px 30px rgba(18,224,184,.35);
  --max:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html,body{margin:0;padding:0;overflow-x:hidden;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  position:relative;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 480px at 8% -6%,rgba(18,224,184,.12),transparent 62%),
    radial-gradient(720px 520px at 96% 12%,rgba(124,92,255,.11),transparent 64%),
    radial-gradient(600px 460px at 50% 106%,rgba(124,92,255,.07),transparent 66%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 78%);
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:800;letter-spacing:-.01em;}
p{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}
.tabnum{font-variant-numeric:tabular-nums;}
.wrap{position:relative;z-index:1;}
.container{
  width:100%;
  max-width:var(--max);
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){
  .container{max-width:1280px;}
}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(6,11,22,.55);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{
  background:rgba(6,11,22,.9);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
}
.nav-inner{
  height:72px;
  display:flex;
  align-items:center;
  gap:28px;
}
.logo{
  display:flex;
  align-items:center;
  gap:11px;
  flex-shrink:0;
}
.logo-mark{
  width:38px;height:38px;
  border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary),var(--purple));
  box-shadow:0 6px 20px rgba(18,224,184,.3);
  position:relative;
  overflow:hidden;
  flex-shrink:0;
}
.logo-mark::after{
  content:"";
  position:absolute;
  inset:2px;
  border-radius:9px;
  background:rgba(6,11,22,.82);
}
.logo-mark span{
  position:relative;
  z-index:1;
  font-size:17px;
  font-weight:800;
  background:linear-gradient(120deg,var(--primary),#9C8BFF);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text b{font-size:16px;font-weight:800;letter-spacing:.2px;}
.logo-text small{font-size:11.5px;color:var(--dim);letter-spacing:1.2px;text-transform:uppercase;}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:8px;
}
.nav-links a{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 14px;
  border-radius:10px;
  font-size:15px;
  color:var(--muted);
  font-weight:500;
  transition:color .2s ease,background .2s ease;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:5px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--purple));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .25s ease;
}
.nav-links a:hover{color:var(--text);background:var(--glass);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--text);}
.nav-links a.active::after{transform:scaleX(1);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;
  width:46px;height:46px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--glass);
  place-items:center;
  margin-left:auto;
}
.nav-toggle span{
  display:block;
  width:20px;height:2px;
  border-radius:2px;
  background:var(--text);
  position:relative;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";
  position:absolute;left:0;
  width:20px;height:2px;border-radius:2px;background:var(--text);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  min-height:46px;
  padding:0 22px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:700;
  letter-spacing:.2px;
  border:1px solid transparent;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease,color .25s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn-primary{
  background:var(--primary);
  color:#04140F;
  box-shadow:var(--glow),var(--shadow-in);
  border-color:rgba(255,255,255,.22);
}
.btn-primary:hover{background:#22F0C8;transform:translateY(-2px);box-shadow:0 12px 36px rgba(18,224,184,.55);}
.btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,.12);
  color:var(--text);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.btn-amber{
  background:var(--amber-dim);
  border-color:rgba(255,180,61,.4);
  color:var(--amber);
}
.btn-amber:hover{background:rgba(255,180,61,.22);transform:translateY(-2px);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none;}

/* ---------- Badges / Tags ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 11px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.3px;
  border:1px solid transparent;
  line-height:1.6;
}
.badge-green{background:var(--primary-dim);color:var(--primary);border-color:rgba(18,224,184,.28);}
.badge-purple{background:var(--purple-dim);color:#B4A4FF;border-color:rgba(124,92,255,.3);}
.badge-amber{background:var(--amber-dim);color:var(--amber);border-color:rgba(255,180,61,.28);}
.badge-muted{background:rgba(255,255,255,.05);color:var(--muted);border-color:var(--line);}

/* ---------- Sections ---------- */
.section{padding:100px 0;}
.section-sm{padding:72px 0;}
.section-head{
  max-width:720px;
  margin-bottom:44px;
}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  letter-spacing:1.6px;
  text-transform:uppercase;
  color:var(--primary);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--purple));
}
.section-head h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:16px;}
.grad-text{
  background:linear-gradient(100deg,var(--primary),#9C8BFF 90%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:76px 0 88px;
  overflow:hidden;
}
.hero-bg{
  position:absolute;
  inset:0;
  z-index:-1;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  opacity:.16;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 86%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 86%);
}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:56px;
  align-items:center;
}
.hero h1{
  font-size:clamp(30px,4.6vw,54px);
  line-height:1.15;
  letter-spacing:-.01em;
  font-weight:800;
  margin-bottom:22px;
}
.hero-sub{
  color:var(--muted);
  font-size:17px;
  max-width:56ch;
  margin-bottom:30px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:34px;
}
.trust-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px 26px;
  padding-top:24px;
  border-top:1px solid var(--line-soft);
}
.trust-item{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--muted);}
.trust-item b{color:var(--text);font-weight:700;font-variant-numeric:tabular-nums;}
.stars{display:flex;gap:2px;color:var(--amber);font-size:13px;letter-spacing:1px;}
.plat-icons{display:flex;gap:7px;}
.plat-icons i{
  display:inline-grid;place-items:center;
  width:30px;height:30px;
  border-radius:9px;
  border:1px solid var(--line);
  background:var(--glass);
  font-style:normal;
  font-size:11px;
  font-weight:700;
  color:var(--muted);
  letter-spacing:.4px;
}
.hero-visual{position:relative;}
.hero-visual::before{
  content:"";
  position:absolute;
  inset:-8% -6%;
  background:radial-gradient(closest-side,rgba(18,224,184,.18),transparent 72%);
  filter:blur(6px);
  z-index:-1;
}
.glass-frame{
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow),var(--shadow-in);
  padding:14px;
  transform:perspective(1200px) rotateY(-7deg) rotateX(3deg);
  transition:transform .45s ease;
}
.glass-frame:hover{transform:perspective(1200px) rotateY(-2deg) rotateX(1deg) translateY(-4px);}
.frame-top{
  display:flex;align-items:center;gap:7px;
  padding:2px 6px 12px;
}
.dot{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.16);}
.frame-bar{
  margin-left:auto;
  font-size:11.5px;
  color:var(--dim);
  letter-spacing:.6px;
  font-variant-numeric:tabular-nums;
}
.frame-img{
  border-radius:12px;
  overflow:hidden;
  aspect-ratio:16/10;
  border:1px solid var(--line-soft);
}
.frame-img img{width:100%;height:100%;object-fit:cover;}
.float-card{
  position:absolute;
  right:-12px;
  bottom:-22px;
  width:210px;
  padding:14px 16px;
  border-radius:var(--r-md);
  border:1px solid var(--primary-line);
  background:rgba(12,20,37,.92);
  backdrop-filter:blur(12px);
  box-shadow:var(--shadow);
}
.float-card b{display:block;font-size:22px;font-variant-numeric:tabular-nums;color:var(--primary);line-height:1.2;}
.float-card span{font-size:12.5px;color:var(--muted);}

/* ---------- Feature grid ---------- */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  grid-template-rows:auto auto;
  gap:22px;
}
.feature-card{
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:linear-gradient(165deg,rgba(255,255,255,.055),rgba(255,255,255,.015));
  box-shadow:var(--shadow),var(--shadow-in);
  padding:26px;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
  position:relative;
  overflow:hidden;
}
.feature-card:hover{transform:translateY(-3px);border-color:var(--primary-line);}
.feature-card.span-2{grid-column:span 2;grid-row:span 2;padding:34px;}
.feature-card.span-2 .feature-icon{width:56px;height:56px;font-size:22px;}
.feature-icon{
  width:46px;height:46px;
  border-radius:13px;
  display:grid;place-items:center;
  border:1px solid var(--primary-line);
  background:var(--primary-dim);
  color:var(--primary);
  font-size:18px;
  margin-bottom:18px;
}
.feature-card h3{font-size:20px;margin-bottom:10px;}
.feature-card p{color:var(--muted);font-size:15px;}
.feature-list{margin-top:20px;display:grid;gap:10px;}
.feature-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;color:var(--muted);
}
.feature-list li::before{
  content:"";
  flex-shrink:0;
  margin-top:9px;
  width:6px;height:6px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 0 3px rgba(18,224,184,.14);
}
.feature-card.wide{grid-column:span 2;}

/* ---------- Shots track ---------- */
.shots-wrap{position:relative;}
.shots-track{
  display:flex;
  gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:6px 4px 20px;
  scrollbar-width:none;
}
.shots-track::-webkit-scrollbar{display:none;}
.shot-card{
  flex:0 0 clamp(260px,42%,460px);
  scroll-snap-align:start;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow),var(--shadow-in);
  padding:12px;
  transition:border-color .25s ease,transform .25s ease;
}
.shot-card:hover{border-color:var(--primary-line);transform:translateY(-3px);}
.shot-img{
  border-radius:12px;
  overflow:hidden;
  aspect-ratio:16/10;
  border:1px solid var(--line-soft);
  background:var(--bg-soft);
}
.shot-img img{width:100%;height:100%;object-fit:cover;}
.shot-cap{padding:14px 6px 6px;}
.shot-cap b{display:block;font-size:15.5px;margin-bottom:4px;}
.shot-cap span{font-size:13px;color:var(--dim);}
.shots-nav{display:flex;align-items:center;gap:12px;margin-top:6px;}
.round-btn{
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--text);
  display:grid;place-items:center;
  font-size:16px;
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.round-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-dim);}
.progress-rail{
  flex:1;
  height:4px;
  border-radius:999px;
  background:rgba(255,255,255,.07);
  overflow:hidden;
}
.progress-bar{
  height:100%;
  width:20%;
  border-radius:999px;
  background:linear-gradient(90deg,var(--primary),var(--purple));
  transition:width .25s ease;
}

/* ---------- Requirements ---------- */
.tab-bar{
  display:inline-flex;
  padding:5px;
  border-radius:14px;
  border:1px solid var(--line);
  background:var(--glass);
  gap:4px;
  margin-bottom:30px;
}
.tab-btn{
  min-height:42px;
  padding:0 22px;
  border-radius:10px;
  font-size:14.5px;
  font-weight:600;
  color:var(--muted);
  transition:background .25s ease,color .25s ease,box-shadow .25s ease;
}
.tab-btn.active{
  background:var(--primary-dim);
  color:var(--primary);
  border:1px solid var(--primary-line);
  box-shadow:0 0 22px rgba(18,224,184,.18);
}
.req-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.req-card{
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--panel);
  padding:24px;
  box-shadow:var(--shadow),var(--shadow-in);
}
.req-card h4{
  font-size:15px;
  color:var(--primary);
  letter-spacing:.6px;
  margin-bottom:14px;
  display:flex;align-items:center;gap:9px;
}
.req-card h4::before{
  content:"";
  width:8px;height:8px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 0 4px rgba(18,224,184,.13);
}
.req-card dl{margin:0;display:grid;gap:12px;}
.req-row{display:flex;justify-content:space-between;gap:16px;font-size:14.5px;}
.req-row dt{color:var(--dim);}
.req-row dd{margin:0;color:var(--text);text-align:right;font-variant-numeric:tabular-nums;}
.req-panel[hidden]{display:none;}

/* ---------- Reviews ---------- */
.review-wall{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
  align-items:start;
}
.review-card{
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:linear-gradient(165deg,rgba(255,255,255,.055),rgba(255,255,255,.015));
  box-shadow:var(--shadow),var(--shadow-in);
  padding:24px;
  transition:border-color .25s ease,transform .25s ease;
}
.review-card:hover{border-color:var(--primary-line);transform:translateY(-2px);}
.review-card.highlight{
  grid-column:span 2;
  border-color:var(--primary-line);
  background:linear-gradient(120deg,rgba(18,224,184,.1),rgba(124,92,255,.1));
  padding:30px;
}
.review-card.highlight .review-text{font-size:17px;color:var(--text);}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.avatar{
  width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;
  font-weight:700;font-size:15px;
  background:linear-gradient(140deg,var(--primary),var(--purple));
  color:#04140F;
  flex-shrink:0;
}
.review-meta b{display:block;font-size:15px;}
.review-meta span{font-size:12.5px;color:var(--dim);font-variant-numeric:tabular-nums;}
.review-text{color:var(--muted);font-size:15px;}
.review-stars{color:var(--amber);font-size:13px;letter-spacing:2px;margin-bottom:10px;}

/* ---------- News / CMS list ---------- */
.news-list{display:grid;gap:0;}
.news-item{
  display:grid;
  grid-template-columns:minmax(0,32%) minmax(0,1fr);
  gap:26px;
  padding:26px 0;
  border-bottom:1px solid var(--line-soft);
  transition:transform .25s ease;
}
.news-item:first-child{padding-top:0;}
.news-item:hover{transform:translateY(-2px);}
.news-thumb{
  border-radius:var(--r-sm);
  overflow:hidden;
  aspect-ratio:16/9;
  border:1px solid var(--line-soft);
  background:var(--bg-soft);
}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.news-item:hover .news-thumb img{transform:scale(1.04);}
.news-body{display:flex;flex-direction:column;gap:10px;}
.news-body h3{font-size:19px;line-height:1.45;transition:color .2s ease;}
.news-item:hover .news-body h3{color:var(--primary);}
.news-body p{color:var(--muted);font-size:14.8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:12px;
  margin-top:auto;
  font-size:13px;
  color:var(--dim);
  font-variant-numeric:tabular-nums;
}
.news-more{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-size:14px;font-weight:600;
}
.empty-state{
  border:1px dashed var(--line);
  border-radius:var(--r-md);
  background:rgba(255,255,255,.02);
  padding:56px 24px;
  text-align:center;
  color:var(--muted);
}
.empty-state svg{width:44px;height:44px;margin:0 auto 14px;color:var(--dim);}
.empty-state p{margin-bottom:16px;font-size:15px;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;}
.faq-item{
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:rgba(255,255,255,.02);
  overflow:hidden;
  transition:border-color .25s ease,background .25s ease;
}
.faq-item.open{border-color:var(--primary-line);background:var(--glass);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:64px;
  padding:16px 24px;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--text);
}
.faq-icon{
  flex-shrink:0;
  width:26px;height:26px;
  position:relative;
  border-radius:8px;
  border:1px solid var(--line);
  transition:transform .3s ease,border-color .3s ease,background .3s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  top:50%;left:50%;
  transform:translate(-50%,-50%);
  background:var(--muted);
  border-radius:2px;
  transition:background .3s ease,opacity .3s ease;
}
.faq-icon::before{width:12px;height:2px;}
.faq-icon::after{width:2px;height:12px;}
.faq-item.open .faq-icon{transform:rotate(135deg);border-color:var(--primary-line);background:var(--primary-dim);}
.faq-item.open .faq-icon::before,.faq-item.open .faq-icon::after{background:var(--primary);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease;
}
.faq-item.open .faq-a{max-height:420px;}
.faq-a p{
  padding:0 24px 22px;
  color:var(--muted);
  font-size:15.5px;
}

/* ---------- Download panel ---------- */
.download-panel{
  border-radius:var(--r-lg);
  border:1px solid var(--primary-line);
  background:linear-gradient(150deg,rgba(18,224,184,.1),rgba(124,92,255,.09) 55%,rgba(255,255,255,.02));
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow);
  padding:44px;
}
.platform-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:16px;
  margin-top:32px;
}
.platform-btn{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:6px;
  padding:20px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:rgba(6,11,22,.55);
  text-align:left;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.platform-btn:hover{transform:translateY(-3px);border-color:var(--primary);box-shadow:0 12px 30px rgba(18,224,184,.2);}
.platform-btn b{font-size:16px;}
.platform-btn span{font-size:12.5px;color:var(--dim);font-variant-numeric:tabular-nums;}
.platform-btn .pf-ico{
  width:34px;height:34px;
  border-radius:10px;
  display:grid;place-items:center;
  border:1px solid var(--primary-line);
  background:var(--primary-dim);
  color:var(--primary);
  font-size:12px;font-weight:700;
  margin-bottom:6px;
}
.platform-btn.primary-pf{
  grid-column:span 1;
  border-color:var(--primary-line);
  background:linear-gradient(160deg,rgba(18,224,184,.16),rgba(6,11,22,.7));
  box-shadow:0 10px 34px rgba(18,224,184,.26),var(--shadow-in);
  transform:scale(1.02);
}
.platform-btn.primary-pf:hover{transform:scale(1.02) translateY(-3px);}
.panel-note{
  margin-top:26px;
  padding:16px 20px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:rgba(6,11,22,.45);
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:14px;
  color:var(--muted);
}
.panel-note strong{color:var(--amber);font-weight:700;}

/* ---------- CTA strip ---------- */
.cta-strip{
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(124,92,255,.14),rgba(18,224,184,.1));
  padding:38px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
}
.cta-strip h3{font-size:clamp(20px,2.4vw,26px);margin-bottom:8px;}
.cta-strip p{color:var(--muted);font-size:15px;}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:40px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(12,20,37,.6),rgba(6,11,22,.95));
  padding:70px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.1fr;
  gap:40px;
  padding-bottom:52px;
}
.footer-brand p{color:var(--muted);font-size:14.5px;margin-top:16px;max-width:34ch;}
.footer-col h4{font-size:15px;margin-bottom:18px;letter-spacing:.4px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a,.footer-col span{color:var(--muted);font-size:14.5px;transition:color .2s ease;}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  border-top:1px solid var(--line-soft);
  padding:22px 0 30px;
  display:flex;
  flex-wrap:wrap;
  gap:12px 26px;
  align-items:center;
  justify-content:space-between;
  color:var(--dim);
  font-size:13px;
}
.footer-bottom a{color:var(--dim);}
.footer-bottom a:hover{color:var(--primary);}

/* ---------- Mobile drawer ---------- */
.drawer{
  position:fixed;
  inset:0;
  z-index:90;
  background:rgba(6,11,22,.98);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  display:flex;
  flex-direction:column;
  padding:22px 22px 30px;
  transform:translateX(100%);
  transition:transform .32s ease;
  visibility:hidden;
}
.drawer.open{transform:translateX(0);visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-close{
  width:46px;height:46px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--text);
  font-size:20px;
  display:grid;place-items:center;
}
.drawer-links{display:grid;gap:2px;flex:1;overflow-y:auto;}
.drawer-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:56px;
  padding:0 4px;
  border-bottom:1px solid var(--line-soft);
  font-size:17px;
  font-weight:600;
  color:var(--text);
}
.drawer-links a::after{content:"›";color:var(--dim);font-size:20px;}
.drawer-links a.active{color:var(--primary);}
.drawer-foot{margin-top:22px;display:grid;gap:12px;}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .container{max-width:1100px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-actions{display:none;}
  .nav-toggle{display:grid;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .glass-frame{transform:none;}
  .glass-frame:hover{transform:translateY(-4px);}
  .float-card{position:static;width:100%;margin-top:16px;}
  .section{padding:78px 0;}
  .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .feature-card.span-2{grid-column:span 2;grid-row:auto;}
  .feature-card.wide{grid-column:span 2;}
  .req-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .platform-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .section{padding:62px 0;}
  .section-sm{padding:52px 0;}
  .hero{padding:44px 0 64px;}
  .hero-actions .btn{width:100%;}
  .review-wall{grid-template-columns:1fr;}
  .review-card.highlight{grid-column:span 1;padding:24px;}
  .news-item{grid-template-columns:1fr;gap:16px;}
  .news-thumb{aspect-ratio:16/9;}
  .download-panel{padding:28px 22px;}
  .cta-strip{padding:26px 22px;}
  .feature-grid{grid-template-columns:1fr;}
  .feature-card.span-2,.feature-card.wide{grid-column:span 1;}
  .req-grid{grid-template-columns:1fr;}
  .platform-grid{grid-template-columns:1fr;}
  .tab-bar{width:100%;}
  .tab-btn{flex:1;padding:0 10px;}
  .shot-card{flex:0 0 84%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .faq-q{font-size:15.5px;padding:14px 18px;}
  .faq-a p{padding:0 18px 18px;}
}
@media (max-width:520px){
  .logo-text small{display:none;}
  .logo-text b{font-size:15px;}
  .section-head h2{font-size:23px;}
  .trust-row{gap:10px 18px;}
  .panel-note{flex-direction:column;gap:8px;}
}

/* roulang page: article */
:root{
  --c-bg:#060B16;
  --c-panel:#0C1425;
  --c-glass:rgba(255,255,255,.05);
  --c-text:#E8F1FF;
  --c-sub:#9BA9C0;
  --c-muted:#64748B;
  --c-primary:#12E0B8;
  --c-primary-dim:rgba(18,224,184,.35);
  --c-primary-soft:rgba(18,224,184,.12);
  --c-secondary:#7C5CFF;
  --c-secondary-soft:rgba(124,92,255,.14);
  --c-accent:#FFB43D;
  --c-accent-soft:rgba(255,180,61,.14);
  --c-danger:#FF5C7A;
  --border:rgba(255,255,255,.08);
  --border-soft:rgba(255,255,255,.06);
  --radius-card:18px;
  --radius-panel:24px;
  --radius-btn:12px;
  --radius-img:12px;
  --shadow-card:0 12px 32px rgba(0,0,0,.35);
  --shadow-inner:inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-primary:0 8px 30px rgba(18,224,184,.35);
  --container:1200px;
  --gap-section:104px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:"Inter",system-ui,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(880px 620px at 6% -8%, rgba(18,224,184,.10), transparent 62%),
    radial-gradient(760px 540px at 102% 16%, rgba(124,92,255,.10), transparent 60%),
    linear-gradient(180deg, rgba(6,11,22,.0), rgba(6,11,22,.9));
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 72%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 72%);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
time,.num{font-variant-numeric:tabular-nums}
::selection{background:rgba(18,224,184,.28);color:#fff}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;
}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.site-header,.site-footer,main{position:relative;z-index:2}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;white-space:nowrap;
  transition:transform .2s ease,box-shadow .25s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{
  background:var(--c-primary);color:#04121A;
  box-shadow:var(--shadow-primary), inset 0 0 0 1px rgba(255,255,255,.24);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 38px rgba(18,224,184,.55), inset 0 0 0 1px rgba(255,255,255,.3)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.12);color:var(--c-text)}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.02em;
  background:var(--c-primary-soft);color:var(--c-primary);border:1px solid rgba(18,224,184,.28);
}
.badge-purple{background:var(--c-secondary-soft);color:#B6A6FF;border-color:rgba(124,92,255,.3)}
.badge-amber{background:var(--c-accent-soft);color:var(--c-accent);border-color:rgba(255,180,61,.3)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,11,22,.72);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(6,11,22,.94);
  border-bottom-color:var(--border);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(18,224,184,.95),rgba(124,92,255,.95));
  color:#04121A;font-weight:800;font-size:17px;
  box-shadow:0 6px 20px rgba(18,224,184,.3), var(--shadow-inner);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text b{font-size:16px;font-weight:700;letter-spacing:.01em}
.logo-text small{font-size:10px;color:var(--c-muted);letter-spacing:.14em;text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  position:relative;display:block;padding:10px 15px;border-radius:10px;
  font-size:15px;color:var(--c-sub);transition:color .2s ease,background .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:15px;right:15px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-secondary));
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-links a:hover{color:var(--c-text);background:rgba(255,255,255,.04)}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active{color:var(--c-text)}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;width:46px;height:46px;border-radius:12px;border:1px solid var(--border);
  background:rgba(255,255,255,.04);cursor:pointer;align-items:center;justify-content:center;
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text)}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--c-text);
  transition:transform .25s ease,top .25s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.site-header.drawer-open .nav-toggle span{background:transparent}
.site-header.drawer-open .nav-toggle span::before{top:0;transform:rotate(45deg)}
.site-header.drawer-open .nav-toggle span::after{top:0;transform:rotate(-45deg)}

/* ============ 面包屑 ============ */
.crumb-bar{padding-top:28px}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--c-muted);
}
.breadcrumb a{color:var(--c-sub);transition:color .2s ease}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:rgba(255,255,255,.18)}
.breadcrumb .crumb-current{color:var(--c-text);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章头部 ============ */
.article-shell{padding:34px 0 0}
.article-layout{
  display:grid;grid-template-columns:minmax(0,760px) 312px;
  gap:56px;justify-content:center;align-items:start;
}
.article-hero{padding-bottom:28px;border-bottom:1px solid var(--border-soft)}
.article-hero h1{
  margin:18px 0 0;font-size:clamp(28px,3.6vw,42px);line-height:1.25;font-weight:800;letter-spacing:-.01em;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;
  font-size:13.5px;color:var(--c-sub);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.2)}
.article-meta b{color:var(--c-primary);font-weight:600}
.article-body{padding-top:32px;font-size:17px;line-height:1.9;color:#D8E4F5}
.article-body h2{
  margin:44px 0 16px;font-size:clamp(22px,2.4vw,28px);line-height:1.4;font-weight:700;color:var(--c-text);
  padding-left:14px;border-left:3px solid var(--c-primary);
}
.article-body h3{margin:32px 0 12px;font-size:20px;font-weight:700;color:var(--c-text)}
.article-body h4{margin:24px 0 10px;font-size:17px;font-weight:700;color:var(--c-text)}
.article-body p{margin:16px 0}
.article-body ul,.article-body ol{margin:16px 0;padding-left:0}
.article-body ul li,.article-body ol li{
  position:relative;margin:10px 0;padding-left:22px;color:#CBD9EC;
}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.78em;width:7px;height:7px;border-radius:50%;
  background:linear-gradient(135deg,var(--c-primary),var(--c-secondary));
}
.article-body ol{counter-reset:artnum}
.article-body ol li{padding-left:30px;counter-increment:artnum}
.article-body ol li::before{
  content:counter(artnum);position:absolute;left:0;top:.28em;
  width:20px;height:20px;border-radius:6px;display:grid;place-items:center;
  font-size:12px;font-weight:700;color:var(--c-primary);
  background:var(--c-primary-soft);border:1px solid rgba(18,224,184,.3);
}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(18,224,184,.4);transition:.2s}
.article-body a:hover{color:#7CF3DA;border-bottom-color:#7CF3DA}
.article-body img{border-radius:var(--radius-img);margin:24px 0;border:1px solid var(--border)}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--c-secondary);
  background:var(--c-glass);border-radius:0 var(--radius-img) var(--radius-img) 0;color:var(--c-sub);
}
.article-body code{
  padding:2px 7px;border-radius:6px;font-size:14px;
  background:rgba(255,255,255,.07);color:#9FE9D8;font-family:ui-monospace,Menlo,Consolas,monospace;
}
.article-body pre{
  margin:22px 0;padding:18px 20px;border-radius:var(--radius-img);overflow-x:auto;
  background:#080E1B;border:1px solid var(--border);
}
.article-body pre code{background:none;padding:0;color:#B9C8DE}
.article-body table{width:100%;margin:22px 0;border-collapse:collapse;font-size:15px}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--border-soft);text-align:left}
.article-body th{color:var(--c-text);background:rgba(255,255,255,.03)}
.article-body strong{color:#fff}
.article-body hr{margin:36px 0;border:0;border-top:1px solid var(--border-soft)}

/* ============ 标签行 ============ */
.tag-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:40px;padding-top:24px;border-top:1px solid var(--border-soft);
}
.tag-label{font-size:13.5px;color:var(--c-muted);margin-right:4px}
.tag{
  padding:6px 14px;border-radius:999px;font-size:13px;color:var(--c-sub);
  background:var(--c-glass);border:1px solid var(--border);transition:.2s;
}
.tag:hover{color:var(--c-primary);border-color:rgba(18,224,184,.4);background:var(--c-primary-soft)}

/* ============ 继续阅读 ============ */
.related{margin-top:64px}
.block-title{display:flex;align-items:center;gap:12px;margin-bottom:22px}
.block-title h2{font-size:22px;font-weight:700}
.block-title .line{flex:1;height:1px;background:var(--border-soft)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.related-card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--radius-card);border:1px solid var(--border);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02));
  box-shadow:var(--shadow-card),var(--shadow-inner);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.related-card:hover{transform:translateY(-2px);border-color:rgba(18,224,184,.4);box-shadow:0 18px 40px rgba(0,0,0,.45)}
.related-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:#0A1120}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.related-card:hover .related-thumb img{transform:scale(1.05)}
.related-body{display:flex;flex-direction:column;gap:8px;padding:16px 18px 20px}
.related-body b{font-size:16px;font-weight:700;line-height:1.5}
.related-body span{font-size:13.5px;color:var(--c-sub);line-height:1.7}
.related-body em{font-style:normal;font-size:12px;color:var(--c-muted)}

/* ============ 上下翻页 / 返回 ============ */
.article-pager{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:36px}
.pager-item{
  display:flex;flex-direction:column;gap:6px;padding:18px 20px;
  border-radius:var(--radius-card);border:1px solid var(--border);background:var(--c-glass);
  transition:transform .25s ease,border-color .25s ease;
}
.pager-item:hover{transform:translateY(-2px);border-color:rgba(18,224,184,.4)}
.pager-label{font-size:12px;color:var(--c-muted);letter-spacing:.06em}
.pager-item strong{font-size:16px;font-weight:700}
.pager-item small{font-size:13px;color:var(--c-sub)}
.pager-item.next{text-align:right;align-items:flex-end}
.back-row{margin-top:22px;display:flex;justify-content:center}

/* ============ 侧栏 ============ */
.article-side{position:relative}
.side-stack{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  padding:22px;border-radius:var(--radius-panel);
  border:1px solid var(--border);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow-card),var(--shadow-inner);
}
.side-card h2,.side-card h3{font-size:17px;font-weight:700;line-height:1.5}
.side-card p{margin-top:10px;font-size:13.5px;color:var(--c-sub);line-height:1.8}
.side-download{border-color:rgba(18,224,184,.35)}
.side-download .btn{margin-top:14px}
.side-list{margin-top:14px;display:flex;flex-direction:column}
.side-list li{border-top:1px solid var(--border-soft)}
.side-list li:first-child{border-top:0}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;font-size:14px;color:var(--c-sub);transition:color .2s ease,padding-left .2s ease;
}
.side-list a::after{content:"›";font-size:17px;color:rgba(255,255,255,.25);transition:color .2s ease}
.side-list a:hover{color:var(--c-primary);padding-left:4px}
.side-list a:hover::after{color:var(--c-primary)}

/* ============ 空态 ============ */
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:56px 24px;margin-top:8px;text-align:center;
  border-radius:var(--radius-panel);border:1px dashed var(--border);background:rgba(255,255,255,.02);
}
.empty-state svg{width:46px;height:46px;stroke:var(--c-muted);fill:none;stroke-width:1.5}
.empty-state p{font-size:15px;color:var(--c-sub)}
.empty-state .hint{font-size:13px;color:var(--c-muted)}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:var(--gap-section);padding:64px 0 28px;
  border-top:1px solid var(--border);
  background:linear-gradient(180deg,rgba(255,255,255,.025),rgba(6,11,22,0));
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand p{margin-top:16px;font-size:13.5px;color:var(--c-sub);line-height:1.85;max-width:34ch}
.footer-col h4{font-size:14px;font-weight:700;color:var(--c-text);margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a,.footer-col span{font-size:13.5px;color:var(--c-sub);transition:color .2s ease}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;
  margin-top:48px;padding-top:22px;border-top:1px solid var(--border-soft);
  font-size:13px;color:var(--c-muted);
}

/* ============ 滚动淡入 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  :root{--container:1280px;--gap-section:120px}
}
@media (max-width:1180px){
  .article-layout{grid-template-columns:minmax(0,1fr) 290px;gap:36px}
}
@media (max-width:1023px){
  :root{--gap-section:72px}
  .nav-toggle{display:flex}
  .nav-actions .btn-ghost{display:none}
  .nav-links{
    position:fixed;left:0;right:0;top:72px;bottom:0;z-index:70;
    flex-direction:column;align-items:stretch;gap:0;margin:0;
    padding:14px 20px 140px;overflow-y:auto;
    background:rgba(6,11,22,.98);
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border-top:1px solid var(--border);
    transform:translateY(-14px);opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .25s ease,transform .25s ease,visibility .25s;
  }
  .site-header.drawer-open .nav-links{transform:none;opacity:1;visibility:visible;pointer-events:auto}
  .nav-links li{border-bottom:1px solid var(--border-soft)}
  .nav-links a{
    display:flex;align-items:center;justify-content:space-between;
    padding:17px 8px;font-size:17px;border-radius:0;min-height:56px;
  }
  .nav-links a::after{display:none}
  .nav-links a::before{content:"›";order:2;font-size:20px;color:rgba(255,255,255,.25)}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .side-stack{position:static}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .article-body{font-size:16px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .article-pager{grid-template-columns:minmax(0,1fr)}
  .pager-item.next{text-align:left;align-items:flex-start}
  .nav-actions .btn-sm{padding:8px 13px;font-size:13px}
  .logo-text small{display:none}
}
@media (max-width:560px){
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .article-hero h1{font-size:26px}
  .crumb-bar{padding-top:20px}
  .breadcrumb{font-size:12.5px}
  .breadcrumb .crumb-current{max-width:100%;white-space:normal;overflow:visible}
  .side-card{padding:18px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root{
  --primary:#12E0B8;
  --primary-soft:rgba(18,224,184,.12);
  --primary-line:rgba(18,224,184,.35);
  --secondary:#7C5CFF;
  --secondary-soft:rgba(124,92,255,.16);
  --amber:#FFB43D;
  --amber-soft:rgba(255,180,61,.14);
  --danger:#FF5C7A;
  --bg:#060B16;
  --panel:#0C1425;
  --panel-2:#0A1120;
  --glass:rgba(255,255,255,.05);
  --text:#E8F1FF;
  --muted:#9BA9C0;
  --dim:#64748B;
  --line:rgba(255,255,255,.08);
  --line-soft:rgba(255,255,255,.06);
  --r-xs:8px;
  --r-sm:12px;
  --r-md:18px;
  --r-lg:24px;
  --shadow:0 12px 32px rgba(0,0,0,.35);
  --inner:inset 0 1px 0 rgba(255,255,255,.06);
  --glow:0 8px 30px rgba(18,224,184,.35);
  --glow-strong:0 10px 38px rgba(18,224,184,.55);
  --container:1200px;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(680px 420px at 8% 0%,rgba(18,224,184,.10),transparent 62%),
    radial-gradient(760px 460px at 96% 22%,rgba(124,92,255,.10),transparent 64%),
    linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.018) 1px,transparent 1px);
  background-size:auto,auto,64px 64px,64px 64px;
  z-index:0;
}
img{max-width:100%;display:block;border-radius:var(--r-sm);}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
input,textarea{font:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}
@media (min-width:1440px){
  :root{--container:1280px;}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  padding:14px 26px;
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  transition:transform .18s ease,box-shadow .22s ease,background .2s ease,border-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-primary{
  background:linear-gradient(180deg,#22efc6,#12E0B8);
  color:#04140f;
  box-shadow:var(--glow),var(--inner);
}
.btn-primary:hover{box-shadow:var(--glow-strong),var(--inner);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--glow),var(--inner);}
.btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,.14);
  color:var(--text);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-amber{
  background:var(--amber-soft);
  border-color:rgba(255,180,61,.4);
  color:var(--amber);
}
.btn-amber:hover{border-color:var(--amber);transform:translateY(-2px);}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  height:var(--header-h);
  display:flex;
  align-items:center;
  background:rgba(6,11,22,.72);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(6,11,22,.9);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.42);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:var(--header-h);
}
.logo{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.logo-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(18,224,184,.9),rgba(124,92,255,.9));
  color:#04140f;font-weight:800;font-size:18px;
  box-shadow:0 6px 20px rgba(18,224,184,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text b{font-size:16px;font-weight:700;letter-spacing:.01em;}
.logo-text small{font-size:11px;color:var(--dim);letter-spacing:.14em;text-transform:uppercase;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-links a{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 14px;
  border-radius:10px;
  font-size:15px;
  color:var(--muted);
  transition:color .2s ease,background .2s ease;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:6px;
  height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s ease;
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--primary);background:var(--primary-soft);}
.nav-links a.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:12px;right:12px;height:2px;border-radius:2px;background:var(--text);
  transition:transform .22s ease,opacity .2s ease;
}
.nav-toggle span{top:21px;}
.nav-toggle span::before{top:-6px;left:0;right:0;}
.nav-toggle span::after{top:6px;left:0;right:0;}
.nav-open .nav-toggle span{background:transparent;}
.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg);}
.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg);}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:22px 0 0;position:relative;z-index:2;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--dim);}
.crumb a{color:var(--muted);transition:color .2s ease;}
.crumb a:hover{color:var(--primary);}
.crumb span[aria-current]{color:var(--text);}

/* ---------- 分类 Hero ---------- */
.cat-hero{
  position:relative;
  padding:52px 0 54px;
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(180deg,rgba(6,11,22,.55),rgba(6,11,22,.94)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  opacity:.34;
  z-index:0;
  pointer-events:none;
}
.cat-hero-grid{
  display:grid;
  grid-template-columns:1.35fr .95fr;
  gap:48px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 15px;
  border-radius:999px;
  background:var(--primary-soft);
  border:1px solid var(--primary-line);
  color:var(--primary);
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
  margin-bottom:20px;
}
.cat-hero h1{
  font-size:clamp(30px,4.6vw,48px);
  font-weight:800;
  line-height:1.15;
  letter-spacing:-.01em;
  margin-bottom:18px;
}
.grad-text{
  background:linear-gradient(92deg,var(--primary),var(--secondary));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.lead{font-size:17px;color:var(--muted);max-width:600px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;
}
.stat-chip{
  flex:1 1 130px;
  min-width:0;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  padding:14px 16px;
  backdrop-filter:blur(12px);
}
.stat-chip b{
  display:block;
  font-family:Inter,system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:20px;
  font-weight:700;
  color:var(--text);
}
.stat-chip span{font-size:12px;color:var(--dim);}
.hero-visual{
  position:relative;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(12px);
  box-shadow:var(--shadow),var(--inner);
  padding:16px;
  transform:perspective(1200px) rotateY(-6deg) rotateX(3deg);
  transition:transform .35s ease;
}
.hero-visual:hover{transform:perspective(1200px) rotateY(-2deg) rotateX(1deg);}
.hero-visual img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-sm);}
.hero-visual::after{
  content:"";
  position:absolute;
  inset:auto -10% -14% -10%;
  height:150px;
  background:radial-gradient(closest-side,rgba(18,224,184,.22),transparent 72%);
  z-index:-1;
}
.hero-visual .float-tag{
  position:absolute;
  top:-14px;right:18px;
  padding:7px 14px;
  border-radius:999px;
  background:rgba(6,11,22,.92);
  border:1px solid var(--primary-line);
  color:var(--primary);
  font-size:12px;
  font-weight:600;
}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;
  top:var(--header-h);
  z-index:60;
  background:rgba(8,14,27,.9);
  backdrop-filter:blur(12px);
  border-top:1px solid var(--line-soft);
  border-bottom:1px solid var(--line);
}
.anchor-scroll{
  display:flex;
  gap:10px;
  overflow-x:auto;
  padding:12px 0;
  scrollbar-width:none;
}
.anchor-scroll::-webkit-scrollbar{display:none;}
.anchor-scroll a{
  flex:0 0 auto;
  padding:9px 18px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  font-size:14px;
  color:var(--muted);
  transition:all .2s ease;
  min-height:40px;
  display:inline-flex;
  align-items:center;
}
.anchor-scroll a:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-soft);}
.anchor-scroll a.active{background:var(--primary);border-color:var(--primary);color:#04140f;font-weight:600;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;position:relative;z-index:1;}
.section.tight{padding:76px 0;}
.section.deep{background:linear-gradient(180deg,rgba(12,20,37,.85),rgba(6,11,22,0));}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{
  font-size:clamp(26px,3.2vw,36px);
  font-weight:800;
  margin-bottom:14px;
}
.section-head p{color:var(--muted);}
.badge{
  display:inline-block;
  padding:5px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.03em;
}
.badge-mint{background:var(--primary-soft);color:var(--primary);}
.badge-purple{background:var(--secondary-soft);color:#b3a3ff;}
.badge-amber{background:var(--amber-soft);color:var(--amber);}

/* ---------- 交错图文 ---------- */
.split-row{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:56px;
  align-items:center;
  padding:34px 0;
  scroll-margin-top:150px;
}
.split-row + .split-row{border-top:1px solid var(--line-soft);}
.split-row:nth-child(even) .split-media{order:2;}
.split-media{
  position:relative;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(12px);
  padding:14px;
  box-shadow:var(--shadow),var(--inner);
  transition:transform .25s ease,border-color .25s ease;
}
.split-media:hover{transform:translateY(-3px);border-color:var(--primary-line);}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-sm);}
.split-media .media-tag{
  position:absolute;
  left:26px;bottom:26px;
  padding:6px 14px;
  border-radius:999px;
  background:rgba(6,11,22,.86);
  border:1px solid var(--line);
  font-size:12px;
  color:var(--muted);
  font-family:Inter,system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
}
.split-body h3{
  font-size:22px;
  font-weight:700;
  margin:14px 0 12px;
}
.split-body p{color:var(--muted);}
.mini-list{margin-top:22px;display:grid;gap:10px;}
.mini-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:15px;
  color:var(--text);
}
.mini-list li::before{
  content:"";
  flex:0 0 auto;
  width:8px;height:8px;
  margin-top:11px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
}
.inline-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:22px;
  color:var(--primary);
  font-size:14px;
  font-weight:600;
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,gap .2s ease;
}
.inline-link:hover{border-bottom-color:var(--primary);gap:12px;}

/* ---------- 功能折叠清单 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.feature-col{
  background:linear-gradient(180deg,rgba(12,20,37,.9),rgba(10,17,32,.7));
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:28px 24px;
  box-shadow:var(--shadow),var(--inner);
  transition:border-color .25s ease,transform .25s ease;
}
.feature-col:hover{border-color:var(--primary-line);transform:translateY(-3px);}
.feature-col h3{
  font-size:19px;
  font-weight:700;
  margin:16px 0 8px;
}
.feature-col .col-desc{font-size:14px;color:var(--dim);margin-bottom:18px;}
.feature-col ul{display:grid;gap:0;}
.feature-col li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:14px 0;
  border-top:1px solid var(--line-soft);
  font-size:15px;
}
.feature-col li:first-child{border-top:0;}
.feature-col li i{
  flex:0 0 auto;
  width:22px;height:22px;
  margin-top:6px;
  border-radius:7px;
  border:1px solid var(--primary-line);
  background:var(--primary-soft);
  display:grid;place-items:center;
  font-style:normal;
  font-size:11px;
  color:var(--primary);
  font-family:Inter,system-ui,sans-serif;
}
.feature-col li span{color:var(--muted);font-size:13px;display:block;margin-top:2px;}

/* ---------- FAQ ---------- */
.faq-list{
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  background:rgba(10,17,32,.6);
  box-shadow:var(--shadow),var(--inner);
}
.faq-item + .faq-item{border-top:1px solid var(--line-soft);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:0 26px;
  min-height:64px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  transition:background .22s ease,color .22s ease;
}
.faq-q:hover{background:rgba(255,255,255,.04);color:var(--primary);}
.faq-item.open .faq-q{background:var(--glass);color:var(--primary);}
.faq-icon{
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:8px;
  border:1px solid var(--line);
  position:relative;
  transition:transform .25s ease,border-color .25s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  left:6px;right:6px;top:12px;height:2px;border-radius:2px;background:var(--muted);
  transition:transform .25s ease,background .25s ease;
}
.faq-icon::after{transform:rotate(90deg);}
.faq-item.open .faq-icon{border-color:var(--primary-line);transform:rotate(180deg);}
.faq-item.open .faq-icon::before,.faq-item.open .faq-icon::after{background:var(--primary);}
.faq-item.open .faq-icon::after{transform:rotate(0deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a-inner{
  padding:0 26px 24px;
  color:var(--muted);
  font-size:15px;
  line-height:1.85;
  max-width:820px;
}

/* ---------- CTA 条 ---------- */
.cta-band{padding:88px 0 104px;}
.cta-panel{
  position:relative;
  border-radius:var(--r-lg);
  border:1px solid var(--primary-line);
  background:linear-gradient(140deg,rgba(18,224,184,.10),rgba(124,92,255,.10) 62%,rgba(12,20,37,.9));
  backdrop-filter:blur(12px);
  padding:52px 48px;
  box-shadow:var(--shadow),var(--inner);
  overflow:hidden;
}
.cta-panel::after{
  content:"";
  position:absolute;
  right:-60px;bottom:-90px;
  width:280px;height:280px;
  border-radius:50%;
  background:radial-gradient(closest-side,rgba(124,92,255,.28),transparent 72%);
  pointer-events:none;
}
.cta-panel h2{font-size:clamp(24px,3vw,34px);font-weight:800;margin-bottom:14px;}
.cta-panel p{color:var(--muted);max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;position:relative;z-index:1;}
.cta-note{
  margin-top:22px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 26px;
  font-size:13px;
  color:var(--dim);
}
.cta-note span{display:inline-flex;align-items:center;gap:8px;}
.cta-note span::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--primary);
}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(6,11,22,.6),rgba(6,11,22,.98));
  padding:64px 0 0;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand p{color:var(--muted);font-size:14px;margin-top:18px;max-width:340px;}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:18px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--muted);transition:color .2s ease;}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  border-top:1px solid var(--line-soft);
  padding:22px 0 30px;
  display:flex;
  flex-wrap:wrap;
  gap:12px 28px;
  font-size:13px;
  color:var(--dim);
}

/* ---------- 滚动淡入 ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease;}
.reveal.visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-links,.nav-actions{display:none;}
  .nav-toggle{display:block;}
  .nav-open .nav-links{
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    position:fixed;
    top:var(--header-h);
    left:0;right:0;bottom:0;
    background:rgba(6,11,22,.98);
    backdrop-filter:blur(14px);
    padding:16px 24px 120px;
    overflow-y:auto;
    z-index:90;
  }
  .nav-open .nav-links a{
    height:56px;
    padding:0 8px;
    border-bottom:1px solid var(--line-soft);
    font-size:17px;
    border-radius:0;
    color:var(--text);
    justify-content:space-between;
  }
  .nav-open .nav-links a::after{
    content:"›";
    position:static;
    left:auto;right:auto;bottom:auto;
    height:auto;
    background:none;
    transform:none;
    color:var(--dim);
    font-size:20px;
  }
  .nav-open .nav-links a.active{color:var(--primary);background:transparent;}
  .cat-hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-visual{transform:none;}
  .hero-visual:hover{transform:none;}
  .split-row{grid-template-columns:1fr;gap:30px;padding:28px 0;}
  .split-row:nth-child(even) .split-media{order:0;}
  .feature-grid{grid-template-columns:1fr;gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:76px 0;}
  .section.tight{padding:60px 0;}
}
@media (max-width:767px){
  .anchor-bar{top:64px;}
  :root{--header-h:64px;}
  .logo-text b{font-size:15px;}
  .logo-text small{display:none;}
  .hero-actions .btn,.cta-actions .btn{width:100%;}
  .stat-chip{flex:1 1 100%;}
  .cta-panel{padding:36px 24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .faq-q{padding:0 18px;font-size:16px;}
  .faq-a-inner{padding:0 18px 20px;}
}
@media (max-width:519px){
  .container{padding:0 20px;}
  .section{padding:60px 0;}
  .section.tight{padding:48px 0;}
  .cat-hero{padding:34px 0 40px;}
  .lead{font-size:16px;}
  .feature-col{padding:22px 18px;}
  .cta-band{padding:64px 0 80px;}
}

/* roulang page: category2 */
:root{
  --bg:#060B16;
  --panel:#0C1425;
  --panel-2:#0F1A2E;
  --glass:rgba(255,255,255,.05);
  --primary:#12E0B8;
  --primary-soft:rgba(18,224,184,.12);
  --primary-line:rgba(18,224,184,.35);
  --violet:#7C5CFF;
  --violet-soft:rgba(124,92,255,.14);
  --amber:#FFB43D;
  --amber-soft:rgba(255,180,61,.14);
  --danger:#FF5C7A;
  --text:#E8F1FF;
  --muted:#9BA9C0;
  --dim:#64748B;
  --line:rgba(255,255,255,.08);
  --line-soft:rgba(255,255,255,.06);
  --r-card:18px;
  --r-panel:24px;
  --r-btn:12px;
  --r-img:12px;
  --shadow:0 12px 32px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-lg:0 24px 60px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06);
  --max:1200px;
  --font:system-ui,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  background:
    radial-gradient(760px 520px at 8% -6%, rgba(18,224,184,.12), transparent 62%),
    radial-gradient(720px 560px at 96% 108%, rgba(124,92,255,.12), transparent 62%),
    linear-gradient(180deg, rgba(6,11,22,.2), rgba(6,11,22,.9) 70%),
    repeating-linear-gradient(0deg, rgba(255,255,255,.024) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(90deg, rgba(255,255,255,.024) 0 1px, transparent 1px 64px);
  pointer-events:none;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--text);text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease}
a:hover{color:var(--primary)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em}
h1{font-size:clamp(30px,4.6vw,50px);font-weight:800}
h2{font-size:clamp(24px,3vw,34px);font-weight:800}
h3{font-size:21px;font-weight:700}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:8px}
.num{font-variant-numeric:tabular-nums;letter-spacing:.01em}

.container{
  width:100%;
  max-width:var(--max);
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:768px){.container{padding:0 24px}}
@media (min-width:1440px){
  :root{--max:1280px}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .25s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--primary);
  color:#04121A;
  box-shadow:0 8px 30px rgba(18,224,184,.35), inset 0 0 0 1px rgba(255,255,255,.22);
}
.btn-primary:hover{background:#25eec6;color:#04121A;transform:translateY(-2px);box-shadow:0 12px 36px rgba(18,224,184,.5), inset 0 0 0 1px rgba(255,255,255,.28)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 16px rgba(18,224,184,.3)}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border-color:rgba(255,255,255,.12);
}
.btn-ghost:hover{color:var(--primary);border-color:var(--primary-line);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-amber{
  background:var(--amber-soft);
  color:var(--amber);
  border-color:rgba(255,180,61,.35);
}
.btn-amber:hover{background:rgba(255,180,61,.2);color:var(--amber);transform:translateY(-2px)}
.btn-sm{padding:10px 16px;font-size:14px}
.btn-lg{padding:16px 28px;font-size:16px}
.btn-block{width:100%}
.btn:disabled,.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}
.btn.is-loading{position:relative;color:transparent!important}
.btn.is-loading::after{
  content:"";
  position:absolute;
  width:16px;height:16px;
  border-radius:50%;
  border:2px solid rgba(255,255,255,.35);
  border-top-color:var(--primary);
  animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- tags ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 11px;
  border-radius:999px;
  font-size:12px;
  line-height:1.6;
  font-weight:600;
  background:var(--primary-soft);
  color:var(--primary);
  border:1px solid rgba(18,224,184,.24);
}
.tag-violet{background:var(--violet-soft);color:#B3A2FF;border-color:rgba(124,92,255,.3)}
.tag-amber{background:var(--amber-soft);color:var(--amber);border-color:rgba(255,180,61,.3)}
.tag-plain{background:rgba(255,255,255,.06);color:var(--muted);border-color:var(--line)}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:70;
  background:rgba(6,11,22,.55);
  border-bottom:1px solid transparent;
  transition:background-color .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(6,11,22,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom-color:var(--line);
}
.nav-inner{display:flex;align-items:center;gap:22px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px}
.logo-mark{
  width:38px;height:38px;
  flex:0 0 38px;
  border-radius:11px;
  background:linear-gradient(135deg,var(--primary),var(--violet));
  display:grid;place-items:center;
  box-shadow:0 10px 26px rgba(18,224,184,.28);
}
.logo-mark span{font-size:17px;font-weight:800;color:#04121A}
.logo-text b{display:block;font-size:16px;font-weight:700;color:var(--text);letter-spacing:.01em}
.logo-text small{display:block;font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--dim)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  display:inline-block;
  padding:9px 14px;
  border-radius:10px;
  font-size:15px;
  color:var(--muted);
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-links a.active{color:var(--primary)}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  cursor:pointer;
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:50%;top:50%;
  width:18px;height:2px;
  margin-left:-9px;
  background:var(--text);
  border-radius:2px;
  transition:transform .25s ease,opacity .2s ease;
}
.nav-toggle span{transform:translateY(-1px)}
.nav-toggle span::before{content:"";left:0;margin:0;top:-6px;width:18px}
.nav-toggle span::after{content:"";left:0;margin:0;top:6px;width:18px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg)}
body.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg)}
@media (min-width:1024px){
  .nav-links a{position:relative}
  .nav-links a::after{
    content:"";
    position:absolute;
    left:14px;right:14px;bottom:2px;
    height:2px;
    border-radius:2px;
    background:linear-gradient(90deg,var(--primary),var(--violet));
    transform:scaleX(0);
    transform-origin:left;
    transition:transform .25s ease;
  }
  .nav-links a:hover::after{transform:scaleX(1)}
  .nav-links a.active::after{transform:scaleX(1)}
}
@media (max-width:1023px){
  .nav-links{
    position:fixed;
    left:0;right:0;
    top:72px;bottom:0;
    margin:0;
    padding:20px 20px 140px;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:rgba(6,11,22,.98);
    backdrop-filter:blur(14px);
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .25s ease,transform .25s ease,visibility .25s;
    z-index:75;
  }
  body.nav-open .nav-links{opacity:1;visibility:visible;transform:none}
  .nav-links a{
    display:flex;
    align-items:center;
    justify-content:space-between;
    min-height:56px;
    padding:0 4px;
    font-size:18px;
    border-bottom:1px solid var(--line-soft);
    border-radius:0;
  }
  .nav-links a::before{content:none}
  .nav-links a:not(.active)::after{
    content:"›";
    color:var(--dim);
    font-size:20px;
    line-height:1;
  }
  .nav-links a.active::after{content:"›";color:var(--primary);font-size:20px;line-height:1}
  .nav-actions{
    position:fixed;
    left:20px;right:20px;bottom:22px;
    display:none;
    z-index:80;
  }
  body.nav-open .nav-actions{display:flex}
  .nav-actions .btn{flex:1}
  .nav-toggle{display:block;margin-left:auto}
}
@media (max-width:767px){
  .nav-inner{gap:12px}
  .logo-text small{display:none}
}

/* ---------- breadcrumb ---------- */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--dim);margin-bottom:22px}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--primary)}
.crumbs span.sep{color:var(--dim);opacity:.7}
.crumbs .current{color:var(--text)}

/* ---------- banner ---------- */
.banner{position:relative;padding:52px 0 84px;overflow:hidden}
.banner::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  opacity:.22;
  z-index:0;
}
.banner::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(6,11,22,.5), rgba(6,11,22,.94) 78%, var(--bg));
  z-index:1;
}
.banner .container{position:relative;z-index:2}
.banner-grid{display:grid;grid-template-columns:1.25fr .95fr;gap:52px;align-items:center}
.banner-copy .lead{color:var(--muted);font-size:17px;margin-top:18px;max-width:620px}
.banner-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.trust-row{
  display:flex;
  flex-wrap:wrap;
  gap:12px 26px;
  margin-top:28px;
  padding-top:22px;
  border-top:1px solid var(--line-soft);
  font-size:14px;
  color:var(--muted);
}
.trust-row b{color:var(--text);font-weight:700}
.trust-row .star{color:var(--amber);letter-spacing:2px}
.banner-card{
  background:var(--glass);
  border:1px solid var(--primary-line);
  border-radius:var(--r-panel);
  padding:18px;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow-lg);
}
.banner-card .shot{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  aspect-ratio:16/10;
  border:1px solid var(--line);
}
.banner-card .shot img{width:100%;height:100%;object-fit:cover;border-radius:0}
.banner-card .shot::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(6,11,22,.05), rgba(6,11,22,.55));
}
.banner-meta{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px}
.banner-meta div{
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-soft);
  border-radius:14px;
  padding:12px 14px;
}
.banner-meta span{display:block;font-size:12px;color:var(--dim)}
.banner-meta b{display:block;font-size:15px;color:var(--text);margin-top:2px}
@media (max-width:1023px){
  .banner{padding:36px 0 64px}
  .banner-grid{grid-template-columns:1fr;gap:32px}
  .banner-card{max-width:560px}
}

/* ---------- sections ---------- */
.section{padding:104px 0}
.section-tight{padding:84px 0}
.section-loose{padding:116px 0}
.section-head{max-width:760px;margin-bottom:44px}
.section-head .kicker{display:inline-block;margin-bottom:14px}
.section-head p{color:var(--muted);margin-top:14px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.divider{height:1px;background:var(--line-soft);border:0;margin:0}
@media (max-width:767px){
  .section{padding:64px 0}
  .section-tight{padding:56px 0}
  .section-loose{padding:72px 0}
  .section-head{margin-bottom:30px}
}

/* ---------- timeline ---------- */
.timeline{position:relative;display:grid;gap:22px;margin-top:8px}
.timeline::before{
  content:"";
  position:absolute;
  left:29px;
  top:24px;
  bottom:24px;
  width:2px;
  border-radius:2px;
  background:linear-gradient(180deg, rgba(18,224,184,.7), rgba(124,92,255,.45), rgba(124,92,255,0));
}
.tl-step{position:relative;display:grid;grid-template-columns:60px 1fr;gap:22px;align-items:start}
.tl-dot{
  width:60px;height:60px;
  border-radius:50%;
  display:grid;place-items:center;
  font-size:19px;
  font-weight:800;
  color:var(--primary);
  background:var(--panel);
  border:1px solid var(--primary-line);
  box-shadow:0 10px 26px rgba(0,0,0,.4);
  font-variant-numeric:tabular-nums;
}
.tl-body{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px 24px;
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  box-shadow:var(--shadow);
  transition:border-color .25s ease,transform .25s ease;
}
.tl-body:hover{border-color:var(--primary-line);transform:translateY(-2px)}
.tl-body h3{margin-bottom:8px}
.tl-body p{color:var(--muted);font-size:15.5px}
.tl-body ul{margin-top:12px;display:grid;gap:8px}
.tl-body li{position:relative;padding-left:18px;color:var(--muted);font-size:14.5px}
.tl-body li::before{
  content:"";
  position:absolute;left:0;top:11px;
  width:6px;height:6px;border-radius:50%;
  background:var(--primary);
}
@media (max-width:767px){
  .timeline::before{left:21px}
  .tl-step{grid-template-columns:46px 1fr;gap:14px}
  .tl-dot{width:46px;height:46px;font-size:16px}
  .tl-body{padding:18px 18px}
}

/* ---------- requirement cards ---------- */
.req-toolbar{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-bottom:28px;
}
.detect-note{font-size:14px;color:var(--primary)}
.req-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.req-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 26px 24px;
  box-shadow:var(--shadow);
  transition:border-color .25s ease,transform .25s ease;
}
.req-card:hover{border-color:var(--primary-line);transform:translateY(-2px)}
.req-card.highlight{border-color:var(--primary-line);background:linear-gradient(180deg, rgba(18,224,184,.06), rgba(12,20,37,.9) 60%)}
.req-card header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.req-card h3{font-size:19px}
.req-list{display:grid;gap:0}
.req-list li{
  display:flex;
  justify-content:space-between;
  gap:16px;
  padding:11px 0;
  border-bottom:1px dashed var(--line-soft);
  font-size:14.5px;
}
.req-list li:last-child{border-bottom:0}
.req-list span{color:var(--dim);flex:0 0 auto}
.req-list b{color:var(--text);font-weight:600;text-align:right}
@media (max-width:860px){
  .req-grid{grid-template-columns:1fr}
}

/* ---------- download panel ---------- */
.dl-panel{
  position:relative;
  border-radius:var(--r-panel);
  border:1px solid var(--primary-line);
  background:
    radial-gradient(560px 320px at 12% 0%, rgba(18,224,184,.14), transparent 60%),
    radial-gradient(520px 320px at 92% 100%, rgba(124,92,255,.16), transparent 62%),
    rgba(255,255,255,.04);
  padding:38px;
  box-shadow:var(--shadow-lg);
  overflow:hidden;
}
.dl-panel-grid{display:grid;grid-template-columns:1.4fr .9fr;gap:36px;align-items:center}
.dl-buttons{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:26px}
.dl-btn{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:4px;
  padding:16px 18px;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.04);
  color:var(--text);
  font-size:15px;
  font-weight:600;
  text-align:left;
  transition:transform .2s ease,border-color .2s ease,background-color .2s ease;
}
.dl-btn small{font-size:12px;color:var(--dim);font-weight:500}
.dl-btn:hover{border-color:var(--primary-line);background:rgba(18,224,184,.08);transform:translateY(-2px);color:var(--text)}
.dl-btn.primary{
  background:var(--primary);
  color:#04121A;
  border-color:transparent;
  box-shadow:0 12px 34px rgba(18,224,184,.42), inset 0 0 0 1px rgba(255,255,255,.24);
}
.dl-btn.primary small{color:rgba(4,18,26,.75)}
.dl-btn.primary:hover{background:#25eec6;color:#04121A;box-shadow:0 16px 42px rgba(18,224,184,.55)}
.dl-shot{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/10}
.dl-shot img{width:100%;height:100%;object-fit:cover;border-radius:0}
.dl-notes{margin-top:26px;padding-top:22px;border-top:1px solid var(--line-soft);display:grid;gap:12px}
.dl-notes p{font-size:14.5px;color:var(--muted)}
.dl-notes b{color:var(--text)}
@media (max-width:1023px){
  .dl-panel{padding:26px}
  .dl-panel-grid{grid-template-columns:1fr;gap:26px}
  .dl-shot{order:-1}
}
@media (max-width:560px){
  .dl-buttons{grid-template-columns:1fr}
}

/* ---------- FAQ ---------- */
.faq-group{margin-bottom:34px}
.faq-group > h3{
  font-size:17px;
  color:var(--primary);
  margin-bottom:14px;
  display:flex;align-items:center;gap:10px;
}
.faq-group > h3::before{
  content:"";
  width:8px;height:8px;border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--violet));
}
.faq-item{
  border:1px solid var(--line-soft);
  border-radius:16px;
  margin-bottom:10px;
  background:rgba(255,255,255,.02);
  overflow:hidden;
  transition:border-color .25s ease,background-color .25s ease;
}
.faq-item.open{border-color:var(--primary-line);background:var(--glass)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 22px;
  min-height:64px;
  background:transparent;
  border:0;
  color:var(--text);
  font-size:17px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--primary)}
.faq-icon{
  position:relative;
  flex:0 0 22px;
  width:22px;height:22px;
  border-radius:50%;
  border:1px solid var(--line);
  transition:transform .28s ease,border-color .25s ease,background-color .25s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--primary);
  border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:10px;height:2px}
.faq-icon::after{width:2px;height:10px;transition:opacity .2s ease}
.faq-item.open .faq-icon{transform:rotate(135deg);border-color:var(--primary-line);background:rgba(18,224,184,.1)}
.faq-item.open .faq-icon::after{opacity:0}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .32s ease;
}
.faq-a-inner{
  padding:0 22px 22px;
  color:var(--muted);
  font-size:15.5px;
  line-height:1.85;
}
@media (max-width:560px){
  .faq-q{padding:16px 16px;font-size:16px}
  .faq-a-inner{padding:0 16px 18px}
}

/* ---------- support / form ---------- */
.support-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:start}
.support-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--shadow);
}
.support-card h3{margin-bottom:12px}
.support-card p{color:var(--muted);font-size:15.5px}
.support-list{display:grid;gap:14px;margin-top:22px}
.support-list li{
  display:flex;
  justify-content:space-between;
  gap:16px;
  font-size:14.5px;
  padding-bottom:12px;
  border-bottom:1px solid var(--line-soft);
}
.support-list li:last-child{border-bottom:0;padding-bottom:0}
.support-list span{color:var(--dim)}
.support-list b{font-weight:600;color:var(--text)}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;color:var(--muted);margin-bottom:8px}
.field input,.field textarea,.field select{
  width:100%;
  padding:13px 14px;
  border-radius:12px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  color:var(--text);
  font-size:15px;
  font-family:inherit;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.field textarea{min-height:120px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--dim)}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(18,224,184,.16);
  background:rgba(255,255,255,.06);
}
.field.error input,.field.error textarea{border-color:var(--danger);box-shadow:0 0 0 4px rgba(255,92,122,.14)}
.field .err{display:none;margin-top:6px;font-size:13px;color:var(--danger)}
.field.error .err{display:block}
.form-note{font-size:13px;color:var(--dim);margin-top:14px}
.form-success{
  display:none;
  margin-bottom:16px;
  padding:12px 16px;
  border-radius:12px;
  background:rgba(18,224,184,.12);
  border:1px solid var(--primary-line);
  color:var(--primary);
  font-size:14px;
}
.form-success.show{display:block}
@media (max-width:900px){
  .support-grid{grid-template-columns:1fr}
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  border-radius:var(--r-panel);
  border:1px solid var(--line);
  background:
    radial-gradient(640px 300px at 82% 12%, rgba(124,92,255,.16), transparent 62%),
    linear-gradient(180deg, rgba(12,20,37,.96), rgba(6,11,22,.96));
  padding:40px;
  display:grid;
  grid-template-columns:1.5fr auto;
  gap:28px;
  align-items:center;
  box-shadow:var(--shadow-lg);
  overflow:hidden;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px)}
.cta-band p{color:var(--muted);margin-top:12px;max-width:640px;font-size:15.5px}
.cta-actions{display:flex; flex-wrap:wrap; gap:12px}
@media (max-width:900px){
  .cta-band{grid-template-columns:1fr;padding:28px}
  .cta-actions .btn{flex:1 1 200px}
}

/* ---------- footer ---------- */
.site-footer{
  margin-top:40px;
  border-top:1px solid var(--line);
  background:rgba(6,11,22,.72);
  padding:62px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:36px;
}
.footer-brand p{color:var(--muted);font-size:14.5px;margin-top:16px;max-width:340px}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-col ul{display:grid;gap:11px}
.footer-col li{font-size:14.5px;color:var(--muted)}
.footer-col a{color:var(--muted)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid var(--line-soft);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:13px;
  color:var(--dim);
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding:44px 0 22px}
}

/* ---------- states / helpers ---------- */
.skeleton{
  border-radius:12px;
  background:linear-gradient(90deg, rgba(255,255,255,.05), rgba(255,255,255,.11), rgba(255,255,255,.05));
  background-size:200% 100%;
  animation:sk 1.4s ease-in-out infinite;
}
@keyframes sk{0%{background-position:200% 0}100%{background-position:-200% 0}}
.empty-state{
  display:grid;
  place-items:center;
  gap:12px;
  padding:46px 20px;
  border:1px dashed var(--line);
  border-radius:var(--r-card);
  color:var(--muted);
  text-align:center;
}
.empty-state svg{width:34px;height:34px;stroke:var(--dim)}
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
}
html.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
html.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html.js .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}