/* roulang page: index */
:root{
  --bg-0:#060A12; --bg-1:#0B1220; --bg-2:#101B2E;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --brand:#16E0C0; --brand-2:#7A5CFF;
  --tx-1:#E9EEF6; --tx-2:#A9B6CB; --tx-3:#6C7C96;
  --warn:#FFB020; --err:#FF6B7A;
  --r-lg:14px; --r-md:10px; --r-sm:8px; --r-pill:999px;
  --glow:0 10px 26px -8px rgba(22,224,192,.5);
  --glow-hi:0 14px 34px -8px rgba(22,224,192,.62);
  --shadow-card:0 24px 48px -28px rgba(0,0,0,.85);
  --font-cn:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--tx-2);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  font-variant-numeric:tabular-nums;
  padding-bottom:72px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:12px}
a{color:inherit;text-decoration:none}
a:hover{color:var(--brand)}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--tx-1);font-weight:700;letter-spacing:-0.01em;line-height:1.35}
h1{font-size:48px;font-weight:800}
h2{font-size:32px}
h3{font-size:22px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:720px;margin-bottom:44px}
.sec-head p{margin-top:14px;font-size:16px;color:var(--tx-2);max-width:46ch}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.06em;color:var(--brand);
  background:rgba(22,224,192,.08);
  border:1px solid rgba(22,224,192,.28);
  padding:5px 12px;border-radius:var(--r-pill);
  margin-bottom:18px;
}
.title-bar{display:inline-block;width:3px;height:18px;background:var(--brand);border-radius:2px;margin-right:10px;vertical-align:-3px}
.lead{font-size:17px;color:var(--tx-2)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:all .18s ease-out;white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#16E0C0 0%,#5FD8E8 45%,#7A5CFF 100%);
  color:#04121A;box-shadow:var(--glow);
}
.btn-primary:hover{color:#04121A;box-shadow:var(--glow-hi);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-ghost{
  background:rgba(255,255,255,.03);border-color:var(--line-strong);color:var(--tx-1);
}
.btn-ghost:hover{border-color:rgba(22,224,192,.55);color:var(--tx-1);background:rgba(22,224,192,.06);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0) scale(.99)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn:disabled,.btn[disabled]{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none}
.link-more{color:var(--tx-1);font-size:14px;font-weight:600;border-bottom:1px dashed rgba(255,255,255,.28);padding-bottom:2px;transition:all .18s ease-out}
.link-more:hover{color:var(--brand);border-color:var(--brand)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;height:68px;
  display:flex;align-items:center;
  background:transparent;transition:background .2s ease-out,border-color .2s ease-out,backdrop-filter .2s;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(6,10,18,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:var(--tx-1);letter-spacing:-0.01em}
.logo-mark{
  width:32px;height:32px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(135deg,rgba(22,224,192,.9),rgba(122,92,255,.85));
  display:grid;place-items:center;color:#04121A;
  font-size:13px;font-weight:800;
}
.logo:hover{color:var(--tx-1)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;display:inline-block;padding:8px 14px;border-radius:8px;
  font-size:14.5px;color:var(--tx-2);transition:color .18s ease-out;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease-out;box-shadow:0 0 10px rgba(22,224,192,.7);
}
.nav-links a:hover{color:var(--tx-1)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--brand)}
.nav-links a.active::after{transform:scaleX(1)}
.nav-cta{display:flex;align-items:center;gap:12px}
.hamburger{
  display:none;width:42px;height:42px;border:1px solid var(--line-strong);
  background:rgba(255,255,255,.03);border-radius:10px;color:var(--tx-1);
  align-items:center;justify-content:center;
}
.hamburger:hover{border-color:rgba(22,224,192,.5)}
.drawer{
  position:fixed;inset:0;z-index:80;background:rgba(5,9,16,.97);
  backdrop-filter:blur(16px);padding:24px;display:none;flex-direction:column;gap:8px;
}
.drawer.open{display:flex}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer nav{display:flex;flex-direction:column}
.drawer nav a{padding:16px 4px;font-size:18px;color:var(--tx-1);border-bottom:1px solid var(--line)}
.drawer .btn{margin-top:24px;width:100%}
.drawer .drawer-contact{margin-top:20px;font-size:13px;color:var(--tx-3);line-height:1.9}

/* ---------- notice ---------- */
.notice{
  background:linear-gradient(90deg,rgba(22,224,192,.12),rgba(122,92,255,.08) 60%,transparent);
  border-bottom:1px solid var(--line);
  font-size:13.5px;color:var(--tx-2);
}
.notice .container{display:flex;align-items:center;gap:10px;min-height:42px;flex-wrap:wrap}
.notice strong{color:var(--tx-1);font-weight:600}
.notice a{color:var(--brand);font-weight:600}

/* ---------- hero ---------- */
.hero{position:relative;padding:104px 0 96px;overflow:hidden}
.hero::before{
  content:"";position:absolute;top:-140px;right:-160px;width:640px;height:420px;
  background:linear-gradient(120deg,rgba(22,224,192,.14),rgba(122,92,255,.06) 55%,transparent 80%);
  transform:skewX(-16deg);pointer-events:none;
}
.hero::after{
  content:"";position:absolute;left:-40px;bottom:-60px;width:320px;height:220px;opacity:.12;pointer-events:none;
  background-image:radial-gradient(rgba(22,224,192,.9) 1px,transparent 1px);
  background-size:16px 16px;
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero h1{margin-bottom:18px}
.hero-sub{font-size:19px;color:var(--tx-1);font-weight:600;margin-bottom:14px}
.hero-text{font-size:16px;color:var(--tx-2);max-width:44ch;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px}
.hero-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;border-top:1px solid var(--line);padding-top:24px}
.hero-metrics .num{font-size:26px;font-weight:800;color:var(--tx-1);letter-spacing:-0.01em}
.hero-metrics .num span{font-size:14px;color:var(--brand);margin-left:2px}
.hero-metrics .lbl{font-size:13px;color:var(--tx-3);margin-top:4px}

.hero-card{
  position:relative;border-radius:var(--r-lg);padding:26px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.09);
  overflow:hidden;
}
.hero-card-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(11,18,32,.72),rgba(6,10,18,.94)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.85;z-index:0;
}
.hero-card-inner{position:relative;z-index:2}
.card-cap{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.card-cap .t{font-size:15px;font-weight:700;color:var(--tx-1)}
.pill{
  font-size:12px;padding:3px 10px;border-radius:var(--r-pill);
  background:rgba(22,224,192,.12);color:var(--brand);border:1px solid rgba(22,224,192,.3);
}
.pill-purple{background:rgba(122,92,255,.14);color:#B7A8FF;border-color:rgba(122,92,255,.34)}
.step-list li{display:flex;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14.5px;color:var(--tx-2)}
.step-list li:last-child{border-bottom:none}
.step-list .idx{
  flex:0 0 auto;width:24px;height:24px;border-radius:8px;font-size:12px;font-weight:700;
  display:grid;place-items:center;background:rgba(22,224,192,.12);color:var(--brand);
}
.float-card{
  position:absolute;z-index:3;border-radius:var(--r-md);padding:12px 14px;
  background:rgba(9,15,26,.92);border:1px solid var(--line-strong);
  box-shadow:0 18px 34px -22px rgba(0,0,0,.95);backdrop-filter:blur(10px);
  font-size:13px;color:var(--tx-2);
}
.float-card .ft{color:var(--tx-1);font-weight:700;font-size:14px;display:block;margin-bottom:2px}
.float-a{top:-18px;left:-18px;max-width:210px}
.float-b{bottom:-20px;right:-14px;max-width:220px;border-color:rgba(22,224,192,.32)}
.float-b .dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px var(--brand);margin-right:6px;vertical-align:1px}

/* ---------- login form ---------- */
.login-form{margin-top:22px;padding-top:20px;border-top:1px solid var(--line);display:grid;gap:14px}
.field{display:grid;gap:6px}
.field label{font-size:13px;color:var(--tx-3)}
.field input{
  height:44px;border-radius:var(--r-sm);padding:0 12px;
  background:#0C1526;border:1px solid var(--line);color:var(--tx-1);
  font-size:14.5px;transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.field input::placeholder{color:var(--tx-3)}
.field input:hover{border-color:var(--line-strong)}
.field input:focus{outline:none;border-color:rgba(22,224,192,.7);box-shadow:0 0 0 3px rgba(22,224,192,.14)}
.form-note{font-size:12px;color:var(--tx-3);line-height:1.7}
.form-row{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--tx-3)}
.form-row a{color:var(--tx-2)}
.form-row a:hover{color:var(--brand)}

/* ---------- trust strip ---------- */
.trust{padding:38px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-1)}
.trust-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;margin-bottom:26px}
.trust-item .n{font-size:24px;font-weight:800;color:var(--tx-1)}
.trust-item .d{font-size:13px;color:var(--tx-3)}
.logo-wall{display:flex;flex-wrap:wrap;gap:12px;padding-top:22px;border-top:1px solid var(--line)}
.logo-wall span{
  font-size:13px;color:var(--tx-3);padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(255,255,255,.02);
  filter:grayscale(1);transition:all .18s ease-out;
}
.logo-wall span:hover{color:var(--brand);border-color:rgba(22,224,192,.4);filter:grayscale(0);background:rgba(22,224,192,.06)}

/* ---------- cards ---------- */
.card{
  background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:var(--r-lg);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.08);
  transition:border-color .18s ease-out,transform .18s ease-out;
}
.card:hover{border-color:rgba(22,224,192,.35);transform:translateY(-2px)}
.card-pad{padding:26px}
.badge{
  display:inline-block;font-size:12px;padding:3px 10px;border-radius:var(--r-pill);
  background:rgba(122,92,255,.14);color:#B7A8FF;border:1px solid rgba(122,92,255,.3);
}
.badge-green{background:rgba(22,224,192,.12);color:var(--brand);border-color:rgba(22,224,192,.3)}

/* ---------- selling points ---------- */
.points-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start}
.point-wide{overflow:hidden;display:flex;flex-direction:column}
.point-wide img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;margin-bottom:22px}
.point-stack{display:grid;gap:24px}
.point-narrow{display:flex;gap:18px;align-items:flex-start}
.point-narrow .no{
  font-size:13px;font-weight:800;color:var(--brand);flex:0 0 auto;
  letter-spacing:.06em;padding-top:4px;
}
.point-narrow h3{font-size:19px;margin-bottom:8px}
.point-narrow p{font-size:14.5px;color:var(--tx-2)}

/* ---------- scenes ---------- */
.scene{display:grid;grid-template-columns:6fr 6fr;gap:44px;align-items:center;margin-bottom:64px}
.scene:last-of-type{margin-bottom:0}
.scene.reverse .scene-media{order:2}
.scene-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.scene h3{font-size:24px;margin-bottom:12px}
.scene p{font-size:15.5px;margin-bottom:16px}
.scene ul{margin-bottom:20px;display:grid;gap:8px}
.scene ul li{position:relative;padding-left:18px;font-size:14.5px;color:var(--tx-2)}
.scene ul li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:var(--brand)}
.steps-axis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin-top:56px;position:relative}
.steps-axis .axis-item{position:relative;padding-top:26px}
.steps-axis .axis-item::before{
  content:"";position:absolute;top:0;left:0;width:28px;height:2px;background:var(--brand);
  box-shadow:0 0 10px rgba(22,224,192,.7);
}
.steps-axis .axis-item::after{
  content:"";position:absolute;top:0;left:28px;right:-20px;height:2px;background:var(--line);
}
.steps-axis .axis-item:last-child::after{display:none}
.steps-axis .no{font-size:13px;font-weight:800;color:var(--brand);letter-spacing:.08em}
.steps-axis h4{font-size:17px;margin:6px 0 6px;color:var(--tx-1)}
.steps-axis p{font-size:14px;color:var(--tx-3)}

/* ---------- matrix + table ---------- */
.matrix{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-bottom:48px}
.matrix .card h3{font-size:20px;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.matrix .card p{font-size:14.5px}
.matrix .card .ico{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;background:rgba(22,224,192,.1);color:var(--brand);flex:0 0 auto}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-lg);background:rgba(255,255,255,.03)}
table{width:100%;border-collapse:collapse;min-width:620px}
thead th{
  text-align:left;font-size:13.5px;color:var(--tx-1);font-weight:700;
  padding:14px 18px;background:rgba(255,255,255,.04);border-bottom:1px solid var(--line);
}
tbody td{padding:14px 18px;font-size:14.5px;color:var(--tx-2);border-bottom:1px solid var(--line)}
tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
tbody tr:last-child td{border-bottom:none}
tbody td:first-child{color:var(--tx-1);font-weight:600}
.td-good{color:var(--brand)}
.td-warn{color:var(--warn)}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.news-card{display:flex;flex-direction:column;overflow:hidden;height:100%}
.news-card .thumb{display:block;overflow:hidden;border-radius:12px;margin:0 0 0 0}
.news-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .25s ease-out}
.news-card:hover .thumb img{transform:scale(1.03)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body h3{font-size:17.5px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:14px;color:var(--tx-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--tx-3);margin-top:auto;padding-top:10px;border-top:1px solid var(--line)}
.news-card--wide{grid-column:span 2;flex-direction:row;align-items:stretch}
.news-card--wide .thumb{width:46%;margin:0;border-radius:12px;flex:0 0 auto;padding:18px 0 18px 18px}
.news-card--wide .thumb img{height:100%;aspect-ratio:auto}
.news-card--wide .news-body{padding:22px 24px}
.empty-state{
  grid-column:1/-1;display:grid;place-items:center;gap:14px;text-align:center;
  padding:56px 24px;border:1px dashed var(--line-strong);border-radius:var(--r-lg);
  background:rgba(255,255,255,.02);
}
.empty-state .ico{color:var(--tx-3)}
.empty-state p{font-size:14.5px;color:var(--tx-3)}

/* ---------- social proof ---------- */
.proof-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;margin-bottom:44px}
.proof-stats .item{padding:22px 24px;border-left:2px solid rgba(22,224,192,.5);background:rgba(255,255,255,.02);border-radius:0 var(--r-md) var(--r-md) 0}
.proof-stats .n{font-size:26px;font-weight:800;color:var(--tx-1)}
.proof-stats .d{font-size:13px;color:var(--tx-3)}
.quote-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.quote{display:flex;flex-direction:column;gap:16px}
.quote .who{display:flex;align-items:center;gap:12px}
.avatar{
  width:42px;height:42px;border-radius:var(--r-pill);flex:0 0 auto;
  display:grid;place-items:center;font-size:15px;font-weight:800;color:#04121A;
  background:linear-gradient(135deg,#16E0C0,#7A5CFF);
}
.quote .who .nm{font-size:14.5px;color:var(--tx-1);font-weight:700}
.quote .who .rl{font-size:12.5px;color:var(--tx-3)}
.quote p{font-size:14.5px}
.foot-note{font-size:12.5px;color:var(--tx-3);margin-top:26px}

/* ---------- faq ---------- */
.faq-list{border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:rgba(255,255,255,.03)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:none}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:transparent;border:none;text-align:left;
  color:var(--tx-1);font-size:16px;font-weight:600;transition:color .18s ease-out,background .18s ease-out;
}
.faq-q:hover{color:var(--brand);background:rgba(22,224,192,.04)}
.faq-q .sign{flex:0 0 auto;transition:transform .2s ease-out;color:var(--brand)}
.faq-item.open .faq-q .sign{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease-out}
.faq-item.open .faq-a{max-height:320px}
.faq-a-inner{padding:0 24px 22px;font-size:15px;color:var(--tx-2);max-width:70ch}

/* ---------- cta ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--bg-1);border-top:1px solid var(--line)}
.cta-band::before{
  content:"";position:absolute;top:-120px;right:-100px;width:560px;height:340px;
  background:linear-gradient(120deg,rgba(22,224,192,.16),rgba(122,92,255,.1) 55%,transparent 82%);
  transform:skewX(-16deg);
}
.cta-inner{position:relative;display:grid;gap:22px;justify-items:start;padding:88px 0}
.cta-inner h2{max-width:22ch}
.cta-inner p{max-width:52ch;font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:8px}

/* ---------- footer ---------- */
.site-footer{background:#050A12;border-top:1px solid var(--line);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--tx-3);max-width:34ch;margin-bottom:16px}
.footer-brand .contact{font-size:13.5px;color:var(--tx-2);line-height:2}
.footer-col h4{font-size:14px;color:var(--tx-1);margin-bottom:16px;letter-spacing:.02em}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--tx-3)}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;display:flex;flex-wrap:wrap;gap:14px;
  align-items:center;justify-content:space-between;font-size:13px;color:var(--tx-3);
}
.footer-bottom .policies{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom a{color:var(--tx-3)}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- sticky bar ---------- */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(6,10,18,.88);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-top:1px solid rgba(22,224,192,.28);
  padding:10px 0 calc(10px + env(safe-area-inset-bottom));
  transform:translateY(120%);transition:transform .25s ease-out;
}
.sticky-bar.show{transform:translateY(0)}
.sticky-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:44px}
.sticky-inner .txt{font-size:14px;color:var(--tx-2)}
.sticky-inner .txt strong{color:var(--tx-1)}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  h1{font-size:36px}
  h2{font-size:26px}
  .nav-links{display:none}
  .hamburger{display:inline-flex}
  .nav-cta .btn{display:none}
  .hero{padding:64px 0 60px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-card{order:2}
  .float-a{left:0}
  .float-b{right:0}
  .points-grid{grid-template-columns:1fr}
  .scene{grid-template-columns:1fr;gap:28px}
  .scene.reverse .scene-media{order:0}
  .steps-axis{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 20px}
  .steps-axis .axis-item::after{display:none}
  .matrix{grid-template-columns:1fr}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .news-card--wide{grid-column:span 2;flex-direction:column}
  .news-card--wide .thumb{width:100%;padding:18px 18px 0}
  .news-card--wide .thumb img{aspect-ratio:16/9;height:auto}
  .proof-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .quote-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .section{padding:72px 0}
}
@media (max-width:640px){
  body{font-size:15px}
  h1{font-size:30px}
  h2{font-size:24px}
  h3{font-size:19px}
  .container{padding:0 16px}
  .hero{padding:52px 0 48px}
  .hero-sub{font-size:17px}
  .hero-metrics{grid-template-columns:1fr;gap:14px;padding-top:20px}
  .hero-metrics .num{font-size:22px}
  .float-card{position:static;max-width:none;margin-top:14px}
  .news-grid{grid-template-columns:1fr}
  .news-card--wide{grid-column:span 1}
  .trust-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .proof-stats{grid-template-columns:1fr}
  .steps-axis{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .section,.section--tight{padding:56px 0}
  .cta-inner{padding:64px 0}
  .card:hover,.news-card:hover .thumb img{transform:none}
  .sticky-inner .txt{font-size:13px}
}

/* roulang page: category1 */
:root{
  --bg-0:#060A12;
  --bg-1:#0B1220;
  --bg-2:#101B2E;
  --line:rgba(255,255,255,.08);
  --brand:#16E0C0;
  --brand-2:#7A5CFF;
  --tx-1:#E9EEF6;
  --tx-2:#A9B6CB;
  --tx-3:#6C7C96;
  --warn:#FFB020;
  --err:#FF6B7A;
  --r-lg:14px;
  --r-sm:10px;
  --r-img:12px;
  --container:1200px;
  --shadow-card:inset 0 1px 0 rgba(255,255,255,.06),0 24px 48px -28px rgba(0,0,0,.85);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--tx-2);
  background:
    radial-gradient(920px 520px at 84% -8%, rgba(22,224,192,.10), transparent 62%),
    radial-gradient(760px 460px at 4% 6%, rgba(122,92,255,.10), transparent 60%),
    var(--bg-0);
  -webkit-font-smoothing:antialiased;
  padding-bottom:76px;
  overflow-x:hidden;
}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--tx-1);letter-spacing:-.01em;line-height:1.35;font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;}
::selection{background:rgba(22,224,192,.28);color:#fff;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:70;
  border-bottom:1px solid transparent;
  background:transparent;
  transition:background .22s ease,border-color .22s ease,backdrop-filter .22s ease;
}
.site-header.is-scrolled{
  background:rgba(6,10,18,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.header-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:var(--tx-1);letter-spacing:-.01em;white-space:nowrap;}
.logo:hover{color:var(--tx-1);}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#04121A;font-size:13px;font-weight:800;letter-spacing:.02em;
  box-shadow:0 8px 20px -10px rgba(22,224,192,.7);
}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links a{position:relative;font-size:15px;color:var(--tx-2);padding:6px 0;}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  transform:scaleX(0);transform-origin:left;transition:transform .18s ease;
}
.nav-links a:hover{color:var(--tx-1);}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1);}
.nav-links a.active{color:var(--brand);}
.header-actions{display:flex;align-items:center;gap:14px;}
.menu-toggle{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,.04);
  color:var(--tx-1);cursor:pointer;transition:border-color .18s ease,background .18s ease;
}
.menu-toggle:hover{border-color:rgba(22,224,192,.45);}
.menu-toggle svg{width:20px;height:20px;stroke:currentColor;stroke-width:1.5;fill:none;}

/* 移动端抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:80;
  background:rgba(6,10,18,.96);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  display:none;flex-direction:column;
  padding:20px 24px calc(32px + env(safe-area-inset-bottom,0px));
}
.mobile-drawer.open{display:flex;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:52px;}
.drawer-close{
  width:40px;height:40px;display:flex;align-items:center;justify-content:center;
  border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,.04);
  color:var(--tx-1);cursor:pointer;
}
.drawer-close svg{width:20px;height:20px;stroke:currentColor;stroke-width:1.5;fill:none;}
.drawer-nav{display:flex;flex-direction:column;margin-top:24px;}
.drawer-nav a{
  display:flex;align-items:center;min-height:52px;
  font-size:17px;color:var(--tx-2);border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--brand);}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:14px;}
.drawer-foot .hint{font-size:13px;color:var(--tx-3);line-height:1.7;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;text-align:center;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-primary{
  background:linear-gradient(135deg,var(--brand) 0%,rgba(22,224,192,.85) 46%,var(--brand-2) 100%);
  color:#04121A;
  box-shadow:0 10px 26px -8px rgba(22,224,192,.5);
}
.btn-primary:hover{color:#04121A;transform:translateY(-1px);box-shadow:0 14px 32px -8px rgba(22,224,192,.68);}
.btn-ghost{
  background:rgba(255,255,255,.03);border-color:var(--line);color:var(--tx-1);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.btn-ghost:hover{border-color:rgba(22,224,192,.5);color:var(--tx-1);transform:translateY(-1px);}
.btn:active{transform:translateY(0) scale(.99);}
.btn:disabled,.btn.is-disabled{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:10px;}

/* ---------- 面包屑 ---------- */
.breadcrumb-wrap{padding:22px 0 0;}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--tx-3);}
.breadcrumb a{color:var(--tx-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:rgba(108,124,150,.7);}
.breadcrumb .current{color:var(--tx-2);}

/* ---------- 页面首屏 ---------- */
.page-hero{padding:44px 0 34px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;border:1px solid rgba(22,224,192,.3);
  background:rgba(22,224,192,.08);color:var(--brand);
  font-size:12px;letter-spacing:.02em;
}
.badge.violet{border-color:rgba(122,92,255,.35);background:rgba(122,92,255,.1);color:#B2A2FF;}
.page-hero h1{
  font-size:48px;font-weight:800;margin:20px 0 18px;max-width:22ch;
}
.page-hero .lead{font-size:16px;color:var(--tx-2);max-width:46ch;margin-bottom:28px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 窄幅横幅 ---------- */
.banner-strip{position:relative;height:220px;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);margin-top:26px;}
.banner-strip img{width:100%;height:100%;object-fit:cover;opacity:.55;}
.banner-strip::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(6,10,18,.92) 0%,rgba(6,10,18,.58) 52%,rgba(6,10,18,.86) 100%);
}
.banner-caption{position:absolute;left:0;right:0;bottom:22px;z-index:2;}
.banner-caption p{font-size:15px;color:var(--tx-1);max-width:38ch;}
.banner-caption span{display:block;font-size:13px;color:var(--brand);margin-bottom:6px;letter-spacing:.04em;}

/* ---------- 板块 ---------- */
.section{padding:86px 0;}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:640px;margin-bottom:44px;}
.section-title{font-size:32px;font-weight:700;position:relative;padding-left:16px;}
.section-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
}
.section-desc{margin-top:16px;font-size:15px;color:var(--tx-2);max-width:46ch;}

/* ---------- 卡片网格（1 大 + 4 小） ---------- */
.grid-entry{display:grid;grid-template-columns:repeat(6,1fr);gap:24px;}
.card{
  position:relative;border-radius:var(--r-lg);border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  padding:24px;box-shadow:var(--shadow-card);
  transition:border-color .18s ease,transform .18s ease;
  display:flex;flex-direction:column;
}
.card:hover{border-color:rgba(22,224,192,.35);transform:translateY(-2px);}
.card-lg{grid-column:span 4;}
.card-sm{grid-column:span 2;}
.card-media{border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/9;margin-bottom:18px;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card h3{font-size:22px;font-weight:700;margin:14px 0 12px;}
.card-sm h3{font-size:19px;}
.card p{font-size:15px;color:var(--tx-2);line-height:1.8;}
.card .meta{margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--tx-3);border-top:1px solid var(--line);}
.card .meta .arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:13px;font-weight:600;}
.card .meta .arrow svg{width:14px;height:14px;stroke:currentColor;stroke-width:1.7;fill:none;transition:transform .18s ease;}
.card:hover .meta .arrow svg{transform:translateX(3px);}
.card-feature-list{margin-top:16px;display:grid;gap:10px;}
.card-feature-list li{display:flex;gap:10px;font-size:14px;color:var(--tx-2);line-height:1.7;}
.card-feature-list li::before{
  content:"";flex:none;width:6px;height:6px;margin-top:9px;border-radius:2px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
}

/* ---------- 核对清单 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.check-item{
  display:flex;gap:14px;align-items:flex-start;
  padding:20px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  transition:border-color .18s ease,background .18s ease;
}
.check-item:hover{border-color:rgba(22,224,192,.32);background:rgba(22,224,192,.04);}
.check-icon{
  flex:none;width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(22,224,192,.3);background:rgba(22,224,192,.08);
}
.check-icon svg{width:16px;height:16px;stroke:var(--brand);stroke-width:1.7;fill:none;}
.check-item h4{font-size:16px;font-weight:600;margin-bottom:6px;}
.check-item p{font-size:14px;color:var(--tx-2);line-height:1.75;}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0;background:none;border:0;cursor:pointer;text-align:left;
  color:var(--tx-1);font-size:16px;font-weight:600;line-height:1.6;
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:999px;
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  transition:transform .2s ease,border-color .2s ease,background .2s ease;
}
.faq-icon svg{width:13px;height:13px;stroke:var(--tx-2);stroke-width:1.8;fill:none;}
.faq-item.open .faq-icon{transform:rotate(180deg);border-color:rgba(22,224,192,.4);background:rgba(22,224,192,.08);}
.faq-item.open .faq-icon svg{stroke:var(--brand);}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .2s ease;}
.faq-a>div{overflow:hidden;}
.faq-a p{font-size:15px;color:var(--tx-2);line-height:1.8;padding:0 0 22px;max-width:52ch;}
.faq-item.open .faq-a{grid-template-rows:1fr;}

/* ---------- 关联分类 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.related-card{
  display:flex;flex-direction:column;gap:10px;
  padding:22px;border-radius:var(--r-lg);border:1px solid var(--line);
  background:rgba(255,255,255,.035);
  transition:border-color .18s ease,transform .18s ease,background .18s ease;
}
.related-card:hover{border-color:rgba(22,224,192,.35);transform:translateY(-2px);background:rgba(22,224,192,.045);}
.related-card .tag{font-size:12px;color:var(--brand);letter-spacing:.03em;}
.related-card h3{font-size:17px;font-weight:600;}
.related-card p{font-size:14px;color:var(--tx-3);line-height:1.7;}
.related-card .go{margin-top:auto;font-size:13px;color:var(--tx-2);display:inline-flex;align-items:center;gap:6px;}
.related-card:hover .go{color:var(--brand);}
.related-card .go svg{width:13px;height:13px;stroke:currentColor;stroke-width:1.7;fill:none;}

/* ---------- 底部 CTA ---------- */
.cta-block{
  position:relative;overflow:hidden;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:linear-gradient(135deg,rgba(11,18,32,.96),rgba(16,27,46,.96));
  padding:80px 0;
}
.cta-block::before{
  content:"";position:absolute;top:-40%;right:-10%;width:520px;height:520px;
  background:linear-gradient(135deg,rgba(22,224,192,.16),rgba(122,92,255,.06));
  transform:skewX(-18deg) rotate(8deg);pointer-events:none;
}
.cta-block::after{
  content:"";position:absolute;left:0;bottom:0;width:200px;height:200px;
  background-image:radial-gradient(rgba(22,224,192,.35) 1px,transparent 1px);
  background-size:14px 14px;opacity:.10;pointer-events:none;
}
.cta-inner{position:relative;z-index:2;max-width:640px;}
.cta-inner h2{font-size:32px;font-weight:700;margin-bottom:16px;}
.cta-inner p{font-size:16px;color:var(--tx-2);margin-bottom:30px;max-width:44ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{background:#050A12;border-top:1px solid var(--line);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;}
.footer-brand .logo{margin-bottom:18px;}
.footer-brand p{font-size:14px;color:var(--tx-3);line-height:1.8;max-width:34ch;}
.footer-brand .contact{margin-top:18px;font-size:13px;color:var(--tx-3);line-height:2;}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:18px;color:var(--tx-1);}
.footer-col ul{list-style:none;display:grid;gap:12px;}
.footer-col a{font-size:14px;color:var(--tx-3);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:52px;padding:22px 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(--tx-3);
}
.footer-bottom .policies{display:flex;gap:20px;flex-wrap:wrap;}
.footer-bottom .policies a{color:var(--tx-3);}
.footer-bottom .policies a:hover{color:var(--brand);}

/* ---------- 固定转化条 ---------- */
.cta-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:65;
  border-top:1px solid rgba(22,224,192,.22);
  background:rgba(6,10,18,.86);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  padding:10px 0 calc(10px + env(safe-area-inset-bottom,0px));
  transform:translateY(110%);
  transition:transform .28s ease;
}
.cta-bar.show{transform:translateY(0);}
.cta-bar-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:44px;}
.cta-bar-text{font-size:14px;color:var(--tx-2);}
.cta-bar-text strong{color:var(--tx-1);font-weight:600;}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-links{display:none;}
  .menu-toggle{display:flex;}
  .page-hero h1{font-size:36px;}
  .grid-entry{grid-template-columns:repeat(6,1fr);}
  .card-lg{grid-column:span 6;}
  .card-sm{grid-column:span 3;}
  .check-grid{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .section{padding:64px 0;}
  .cta-block{padding:64px 0;}
  .cta-inner h2{font-size:26px;}
  .section-title{font-size:26px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .page-hero{padding:32px 0 24px;}
  .page-hero h1{font-size:30px;max-width:none;}
  .page-hero .lead{font-size:15px;}
  .banner-strip{height:200px;}
  .hero-cta .btn{flex:1 1 auto;}
  .section{padding:52px 0;}
  .section-title{font-size:24px;}
  .card{padding:20px;}
  .card-lg,.card-sm{grid-column:span 6;}
  .card h3{font-size:19px;}
  .card:hover,.related-card:hover,.check-item:hover{transform:none;}
  .card:hover .card-media img{transform:none;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-bar-text{display:none;}
  .cta-bar-inner{justify-content:center;}
  .cta-bar .btn{width:100%;}
}
@media (max-width:520px){
  .page-hero h1{font-size:27px;}
  .btn{height:44px;padding:0 18px;font-size:14px;}
}

/* roulang page: article */
:root{
  --bg-0:#060A12;
  --bg-1:#0B1220;
  --bg-2:#101B2E;
  --line:rgba(255,255,255,.08);
  --brand:#16E0C0;
  --brand-2:#7A5CFF;
  --tx-1:#E9EEF6;
  --tx-2:#A9B6CB;
  --tx-3:#6C7C96;
  --warn:#FFB020;
  --err:#FF6B7A;
  --r-lg:14px;
  --r-sm:10px;
  --r-img:12px;
  --glass:rgba(255,255,255,.04);
  --shadow-card:inset 0 1px 0 rgba(255,255,255,.06), 0 24px 48px -28px rgba(0,0,0,.85);
  --shadow-glow:0 10px 26px -8px rgba(22,224,192,.5);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body.page-article{
  margin:0;
  padding:0 0 76px;
  background:var(--bg-0);
  color:var(--tx-2);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.page-article::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.045) 1px, transparent 1px);
  background-size:22px 22px;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{color:var(--tx-1);margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
.num{font-variant-numeric:tabular-nums;font-family:Inter,system-ui,sans-serif}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}

/* ---------- 顶部阅读进度 ---------- */
.read-progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:200;background:transparent;pointer-events:none}
.read-progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--brand),var(--brand-2));box-shadow:0 0 12px rgba(22,224,192,.6);transition:width .12s linear}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:all .18s ease-out;white-space:nowrap;
}
.btn svg{width:16px;height:16px;stroke-width:1.5}
.btn-primary{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 100%);
  color:#04120F;box-shadow:var(--shadow-glow);
}
.btn-primary:hover{box-shadow:0 14px 32px -8px rgba(22,224,192,.68);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-ghost{background:rgba(255,255,255,.03);border-color:var(--line);color:var(--tx-1)}
.btn-ghost:hover{border-color:rgba(22,224,192,.5);color:#fff;transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0) scale(.99)}
.btn-text{background:none;border:none;padding:0;height:auto;color:var(--tx-2);font-weight:600}
.btn-text:hover{color:var(--brand)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn:disabled,.btn[disabled]{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;height:68px;
  background:transparent;border-bottom:1px solid transparent;
  transition:background .2s ease-out,border-color .2s ease-out,backdrop-filter .2s ease-out;
}
.site-header.scrolled{
  background:rgba(6,10,18,.72);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.header-inner{height:68px;display:flex;align-items:center;gap:24px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#04120F;font-weight:800;font-size:14px;letter-spacing:-.02em;
  box-shadow:0 8px 20px -10px rgba(22,224,192,.7);
}
.logo-text{color:var(--tx-1);font-size:17px;font-weight:700;letter-spacing:-.01em}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:68px;padding:0 12px;
  font-size:15px;font-weight:500;color:var(--tx-2);transition:color .16s ease-out;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:16px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));opacity:0;transform:scaleX(.4);
  transition:opacity .18s ease-out,transform .18s ease-out;
}
.nav-links a:hover{color:var(--tx-1)}
.nav-links a:hover::after{opacity:.5;transform:scaleX(1)}
.nav-links a.active{color:var(--brand)}
.nav-links a.active::after{opacity:1;transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.menu-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  align-items:center;justify-content:center;cursor:pointer;
}
.menu-toggle svg{width:20px;height:20px;stroke:var(--tx-1);stroke-width:1.5}
.menu-toggle:hover{border-color:rgba(22,224,192,.45)}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:130;display:flex;flex-direction:column;gap:8px;
  padding:24px;background:rgba(6,10,18,.97);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s;
}
.drawer.open{opacity:1;visibility:visible;transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 4px;font-size:16px;color:var(--tx-1);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--brand)}
.drawer-nav a span{color:var(--tx-3);font-size:13px}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:14px}
.drawer-contact{font-size:13px;color:var(--tx-3);line-height:1.9;border-top:1px solid var(--line);padding-top:16px}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;overflow:hidden;
  padding:40px 0 44px;background:var(--bg-1);border-bottom:1px solid var(--line);
}
.article-hero::before{
  content:"";position:absolute;right:-90px;top:-130px;width:560px;height:340px;border-radius:24px;
  background:linear-gradient(135deg,rgba(22,224,192,.13),rgba(122,92,255,.07) 58%,transparent 85%);
  transform:skewX(-18deg);pointer-events:none;
}
.article-hero::after{
  content:"";position:absolute;left:-30px;bottom:-50px;width:240px;height:150px;
  background-image:radial-gradient(rgba(255,255,255,.13) 1px,transparent 1px);
  background-size:14px 14px;opacity:.55;pointer-events:none;
}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--tx-3);margin-bottom:22px;
}
.breadcrumb a{color:var(--tx-3);transition:color .16s ease-out}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(255,255,255,.18)}
.breadcrumb .current{
  color:var(--tx-2);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.badge{
  display:inline-flex;align-items:center;gap:7px;height:28px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(22,224,192,.1);border:1px solid rgba(22,224,192,.28);color:var(--brand);
}
.badge svg{width:13px;height:13px;stroke-width:1.5}
.article-hero h1{
  font-size:36px;line-height:1.34;font-weight:800;max-width:22ch;margin:18px 0 0;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;
  margin-top:22px;font-size:13px;color:var(--tx-3);
}
.meta-row .item{display:inline-flex;align-items:center;gap:6px}
.meta-row svg{width:14px;height:14px;stroke-width:1.5;stroke:var(--tx-3)}
.meta-divider{width:1px;height:12px;background:var(--line)}
.hero-actions{display:flex;gap:10px;margin-top:22px}
.icon-btn{
  display:inline-flex;align-items:center;gap:7px;height:36px;padding:0 14px;
  border-radius:var(--r-sm);border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:var(--tx-2);font-size:13px;font-weight:500;cursor:pointer;transition:all .18s ease-out;
}
.icon-btn svg{width:15px;height:15px;stroke-width:1.5}
.icon-btn:hover{border-color:rgba(22,224,192,.45);color:var(--tx-1);transform:translateY(-1px)}
.icon-btn:active{transform:translateY(0) scale(.99)}
.icon-btn.on{border-color:rgba(22,224,192,.55);color:var(--brand);background:rgba(22,224,192,.08)}

/* ---------- 主体双栏 ---------- */
.article-wrap{padding:56px 0 8px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:32px;align-items:start}
.article-main{
  min-width:0;background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:40px 44px 36px;box-shadow:var(--shadow-card);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.article-body{max-width:760px;font-size:16px;line-height:1.8;color:var(--tx-2);overflow-wrap:break-word}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.4em}
.article-body h2{
  position:relative;font-size:22px;line-height:1.5;font-weight:700;color:var(--tx-1);
  margin:2.2em 0 .9em;padding-left:14px;scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.32em;bottom:.32em;width:3px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
}
.article-body h3{font-size:18px;font-weight:700;color:var(--tx-1);margin:1.8em 0 .7em}
.article-body h4{font-size:16px;font-weight:700;color:var(--tx-1);margin:1.6em 0 .6em}
.article-body a{color:var(--brand);text-decoration:underline;text-decoration-style:dashed;text-underline-offset:3px}
.article-body a:hover{text-decoration-style:solid}
.article-body strong{color:var(--tx-1);font-weight:700}
.article-body blockquote{
  margin:1.7em 0;padding:16px 20px;border-left:2px solid var(--brand);
  background:rgba(255,255,255,.04);border-radius:var(--r-sm);color:var(--tx-1);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body ul{list-style:none;margin:0 0 1.4em;padding:0}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:.6em}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;
  background:var(--brand);opacity:.85;
}
.article-body ol{list-style:decimal;margin:0 0 1.4em;padding-left:1.5em}
.article-body ol li{margin-bottom:.6em}
.article-body img{width:100%;height:auto;border-radius:var(--r-img);margin:1.5em 0;border:1px solid var(--line)}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--tx-3);text-align:center;margin-top:10px}
.article-body table{
  display:block;width:100%;overflow-x:auto;border-collapse:collapse;
  font-size:15px;margin:1.6em 0;
}
.article-body th,.article-body td{
  border:1px solid var(--line);padding:10px 14px;text-align:left;white-space:nowrap;
}
.article-body th{background:rgba(255,255,255,.05);color:var(--tx-1);font-weight:600}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.028)}
.article-body pre{
  background:#0A1220;border:1px solid var(--line);border-radius:var(--r-sm);
  padding:16px 18px;overflow-x:auto;margin:1.6em 0;
}
.article-body pre code{background:none;border:none;padding:0}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:14px;background:rgba(22,224,192,.09);color:#9FF3E2;
  border:1px solid rgba(22,224,192,.18);border-radius:6px;padding:2px 6px;
}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2.4em 0}

/* 空态 */
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:64px 24px;text-align:center;
}
.empty-state .ico{
  width:52px;height:52px;border-radius:999px;display:grid;place-items:center;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
}
.empty-state .ico svg{width:22px;height:22px;stroke:var(--tx-3);stroke-width:1.5}
.empty-state h2{font-size:20px}
.empty-state p{font-size:15px;color:var(--tx-3);max-width:44ch}

/* 文末 */
.article-foot{margin-top:40px;padding-top:28px;border-top:1px solid var(--line)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 13px;border-radius:999px;
  font-size:13px;color:var(--tx-2);border:1px solid var(--line);background:rgba(255,255,255,.03);
  transition:all .18s ease-out;
}
.tag:hover{border-color:rgba(22,224,192,.45);color:var(--brand);transform:translateY(-1px)}
.nav-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:34px}
.nav-card{
  display:flex;flex-direction:column;gap:8px;padding:20px;border-radius:var(--r-lg);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  transition:all .2s ease-out;
}
.nav-card:hover{border-color:rgba(22,224,192,.35);transform:translateY(-2px);background:rgba(255,255,255,.05)}
.nav-card .label{font-size:12px;color:var(--tx-3);letter-spacing:.04em}
.nav-card .title{font-size:16px;font-weight:700;color:var(--tx-1)}
.nav-card .arrow{font-size:13px;color:var(--brand);margin-top:4px}
.related-title{font-size:20px;margin-bottom:18px;display:flex;align-items:center;gap:10px}
.related-title::before{content:"";width:3px;height:18px;border-radius:2px;background:var(--brand)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.card{
  display:flex;flex-direction:column;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);background:var(--glass);
  transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.card:hover{border-color:rgba(22,224,192,.35);transform:translateY(-2px);box-shadow:var(--shadow-card)}
.card-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.card:hover .card-thumb img{transform:scale(1.03)}
.card-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body .title{
  font-size:16px;font-weight:700;color:var(--tx-1);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-body .desc{
  font-size:14px;color:var(--tx-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{
  display:flex;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--tx-3);margin-top:auto;padding-top:10px;border-top:1px solid var(--line);
}
.card-meta .go{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:4px}
.card-meta .go svg{width:13px;height:13px;stroke-width:1.5}
.back-row{margin-top:32px;display:flex;justify-content:center}

/* ---------- 侧栏 ---------- */
.article-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:88px}
.side-card{
  border:1px solid var(--line);border-radius:var(--r-lg);padding:20px;
  background:var(--glass);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
}
.side-title{
  font-size:14px;font-weight:700;color:var(--tx-1);letter-spacing:.02em;
  margin-bottom:14px;display:flex;align-items:center;gap:8px;
}
.side-title::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--brand)}
.toc-list{list-style:none;display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;padding:7px 10px;border-radius:8px;font-size:14px;color:var(--tx-2);
  line-height:1.6;border-left:2px solid transparent;transition:all .16s ease-out;
}
.toc-list a:hover{color:var(--tx-1);background:rgba(255,255,255,.04)}
.toc-list a.active{
  color:var(--brand);border-left-color:var(--brand);background:rgba(22,224,192,.08);
}
.side-cta{
  border-color:rgba(22,224,192,.22);
  background:linear-gradient(160deg,rgba(22,224,192,.09),rgba(122,92,255,.07) 65%,rgba(255,255,255,.03));
}
.side-cta p{font-size:14px;color:var(--tx-2);line-height:1.75;margin:8px 0 16px}
.side-cta .btn{width:100%}
.side-hint{font-size:12px;color:var(--tx-3);margin-top:12px;line-height:1.7}
.hot-list{list-style:none;display:flex;flex-direction:column}
.hot-list li{border-bottom:1px solid var(--line)}
.hot-list li:last-child{border-bottom:none}
.hot-list a{
  display:flex;align-items:flex-start;gap:10px;padding:11px 0;
  font-size:14px;color:var(--tx-2);line-height:1.65;transition:color .16s ease-out;
}
.hot-list a:hover{color:var(--brand)}
.hot-list .idx{
  flex-shrink:0;width:20px;height:20px;border-radius:6px;display:grid;place-items:center;
  font-size:11px;font-weight:700;color:var(--brand);background:rgba(22,224,192,.1);
  border:1px solid rgba(22,224,192,.22);margin-top:3px;
}

/* ---------- 底部 CTA ---------- */
.cta-block{
  position:relative;overflow:hidden;margin-top:72px;
  background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:72px 0;
}
.cta-block::before{
  content:"";position:absolute;left:-120px;top:-80px;width:520px;height:300px;
  background:linear-gradient(135deg,rgba(122,92,255,.13),rgba(22,224,192,.09) 55%,transparent 88%);
  transform:skewX(-18deg);border-radius:24px;pointer-events:none;
}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{font-size:32px;line-height:1.35;max-width:20ch}
.cta-inner p{font-size:15px;color:var(--tx-2);margin-top:12px;max-width:44ch}
.cta-buttons{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:#050A12;border-top:1px solid var(--line);padding:56px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--tx-2);line-height:1.85;max-width:38ch}
.footer-brand .contact{font-size:13px;color:var(--tx-3);line-height:2;margin-top:16px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--tx-1);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--tx-2);transition:color .16s ease-out,padding-left .16s ease-out}
.footer-col a:hover{color:var(--brand);padding-left:3px}
.footer-bottom{
  margin-top:44px;padding:20px 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(--tx-3);
}
.footer-bottom .policies{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom .policies a:hover{color:var(--brand)}

/* ---------- 固定转化条 ---------- */
.convert-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:110;
  background:rgba(6,10,18,.86);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-top:1px solid rgba(22,224,192,.18);
  padding:10px 0 calc(10px + env(safe-area-inset-bottom));
  transform:translateY(110%);opacity:0;
  transition:transform .24s ease-out,opacity .24s ease-out;
}
.convert-bar.show{transform:translateY(0);opacity:1}
.convert-inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
.convert-text{font-size:14px;color:var(--tx-2)}
.convert-text strong{color:var(--tx-1);font-weight:600}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:24px}
}
@media (max-width:1023px){
  .nav-links,.header-actions .btn{display:none}
  .menu-toggle{display:inline-flex}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-side{position:static;order:2}
  .article-main{padding:32px 28px}
  .article-hero h1{font-size:30px}
  .cta-inner h2{font-size:26px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body.page-article{font-size:15px;padding-bottom:86px}
  .container{padding:0 16px}
  .article-hero{padding:28px 0 32px}
  .article-hero h1{font-size:26px;max-width:none}
  .breadcrumb .current{max-width:26ch}
  .article-wrap{padding:32px 0 0}
  .article-main{padding:24px 18px;border-radius:var(--r-lg)}
  .article-body h2{font-size:19px}
  .article-body h3{font-size:17px}
  .nav-cards{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .cta-block{padding:52px 0}
  .cta-inner h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .convert-text{font-size:13px}
  .card:hover{transform:none}
  .nav-card:hover{transform:none}
  .icon-btn:hover{transform:none}
}
@media (max-width:520px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .icon-btn{justify-content:center}
  .cta-buttons{width:100%}
  .cta-buttons .btn{flex:1}
}

/* roulang page: category2 */
:root{
    --bg-0:#060A12;
    --bg-1:#0B1220;
    --bg-2:#101B2E;
    --line:rgba(255,255,255,.08);
    --line-strong:rgba(22,224,192,.35);
    --brand:#16E0C0;
    --brand-2:#7A5CFF;
    --tx-1:#E9EEF6;
    --tx-2:#A9B6CB;
    --tx-3:#6C7C96;
    --warn:#FFB020;
    --err:#FF6B7A;
    --r-lg:14px;
    --r-md:12px;
    --r-sm:10px;
    --glass:rgba(255,255,255,.04);
    --shadow-card:inset 0 1px 0 rgba(255,255,255,.06), 0 24px 48px -28px rgba(0,0,0,.85);
    --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    background:var(--bg-0);
    color:var(--tx-2);
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    padding-bottom:84px;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  h1,h2,h3,h4{margin:0;color:var(--tx-1);font-weight:700;line-height:1.3;letter-spacing:-.005em;}
  p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  a:focus-visible,button:focus-visible,input:focus-visible{
    outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;
  }
  .num{font-variant-numeric:tabular-nums;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

  /* ---------- 顶部公告条 ---------- */
  .topbar{
    background:linear-gradient(90deg,rgba(22,224,192,.12),rgba(122,92,255,.12));
    border-bottom:1px solid var(--line);
    font-size:13px;color:var(--tx-2);
  }
  .topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;height:40px;}
  .topbar b{color:var(--tx-1);font-weight:600;}
  .topbar a{color:var(--brand);}
  .topbar a:hover{text-decoration:underline;text-underline-offset:3px;}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    border-bottom:1px solid transparent;
    transition:background .2s ease-out,border-color .2s ease-out;
  }
  .site-header.scrolled{
    background:rgba(6,10,18,.72);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom-color:var(--line);
  }
  .nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;}
  .logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--tx-1);white-space:nowrap;}
  .logo-mark{
    display:inline-grid;place-items:center;width:34px;height:34px;border-radius:var(--r-sm);
    background:linear-gradient(135deg,var(--brand),var(--brand-2));
    color:#04121a;font-size:13px;font-weight:800;letter-spacing:.02em;
    box-shadow:0 10px 22px -12px rgba(22,224,192,.85);
  }
  .nav-links{display:flex;align-items:center;gap:26px;}
  .nav-links a{
    position:relative;font-size:15px;color:var(--tx-2);padding:8px 0;
    transition:color .18s ease-out;
  }
  .nav-links a:hover{color:var(--tx-1);}
  .nav-links a.active{color:var(--brand);}
  .nav-links a.active::after{
    content:"";position:absolute;left:0;right:0;bottom:-10px;height:2px;border-radius:2px;
    background:var(--brand);box-shadow:0 0 12px rgba(22,224,192,.85);
  }
  .nav-actions{display:flex;align-items:center;gap:12px;}
  .menu-toggle{
    display:none;width:42px;height:42px;border-radius:var(--r-sm);
    border:1px solid var(--line);color:var(--tx-1);
    align-items:center;justify-content:center;
  }
  .menu-toggle:hover{border-color:var(--line-strong);color:var(--brand);}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 20px;border-radius:var(--r-sm);
    font-size:15px;font-weight:600;border:1px solid transparent;
    transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out,color .18s ease-out;
    white-space:nowrap;
  }
  .btn-primary{
    background:linear-gradient(135deg,#16E0C0 0%,#7A5CFF 100%);
    color:#05121C;
    box-shadow:0 10px 26px -8px rgba(22,224,192,.5);
  }
  .btn-primary:hover{box-shadow:0 14px 32px -8px rgba(22,224,192,.68);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0) scale(.99);}
  .btn-ghost{background:transparent;border-color:var(--line);color:var(--tx-1);}
  .btn-ghost:hover{border-color:var(--line-strong);color:var(--brand);}
  .btn-ghost:active{transform:translateY(0) scale(.99);}
  .btn-sm{height:38px;padding:0 16px;font-size:14px;}
  .btn[disabled],.btn.disabled{opacity:.4;box-shadow:none;pointer-events:none;}

  .link-text{
    display:inline-flex;align-items:center;gap:6px;color:var(--tx-2);font-size:14px;
    border-bottom:1px dashed rgba(169,182,203,.4);padding-bottom:2px;
    transition:color .18s ease-out,border-color .18s ease-out;
  }
  .link-text:hover{color:var(--brand);border-color:var(--brand);}

  /* ---------- 徽章 / 标签 ---------- */
  .badge{
    display:inline-flex;align-items:center;gap:8px;
    height:30px;padding:0 14px;border-radius:999px;
    background:rgba(22,224,192,.1);border:1px solid rgba(22,224,192,.28);
    color:var(--brand);font-size:13px;font-weight:600;
  }
  .badge-soft{
    display:inline-block;padding:3px 11px;border-radius:999px;
    background:rgba(122,92,255,.14);border:1px solid rgba(122,92,255,.3);
    color:#B9A8FF;font-size:12px;font-weight:600;
  }
  .tag{
    display:inline-block;padding:4px 12px;border-radius:999px;font-size:12px;
    color:var(--tx-2);background:rgba(255,255,255,.04);border:1px solid var(--line);
  }

  /* ---------- 玻璃卡 ---------- */
  .glass{
    background:var(--glass);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    box-shadow:var(--shadow-card);
  }

  /* ---------- 面包屑 ---------- */
  .breadcrumb{padding:22px 0 0;}
  .breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--tx-3);}
  .breadcrumb li{display:flex;align-items:center;gap:8px;}
  .breadcrumb a{color:var(--tx-2);}
  .breadcrumb a:hover{color:var(--brand);}
  .breadcrumb .sep{color:var(--tx-3);}
  .breadcrumb .current{color:var(--brand);}

  /* ---------- 分类首屏 ---------- */
  .cat-hero{padding:26px 0 8px;}
  .cat-hero h1{font-size:48px;line-height:1.22;max-width:900px;margin-bottom:18px;}
  .cat-hero h1 em{font-style:normal;background:linear-gradient(135deg,#16E0C0,#7A5CFF);-webkit-background-clip:text;background-clip:text;color:transparent;}
  .cat-lead{max-width:46ch;font-size:16px;color:var(--tx-2);}
  .cat-lead + .cat-lead{margin-top:10px;}
  .cat-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}

  .banner-strip{
    position:relative;margin-top:38px;height:224px;border-radius:var(--r-lg);overflow:hidden;
    border:1px solid var(--line);
    background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  }
  .banner-strip::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(90deg,rgba(6,10,18,.94) 0%,rgba(6,10,18,.6) 55%,rgba(6,10,18,.35) 100%);
  }
  .banner-inner{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;justify-content:flex-end;padding:26px 28px;}
  .banner-inner h2{font-size:22px;margin-bottom:6px;}
  .banner-inner p{font-size:14px;color:var(--tx-2);max-width:52ch;}

  /* ---------- 板块 ---------- */
  .section{padding:72px 0;}
  .section-head{max-width:720px;margin-bottom:34px;}
  .section-head .kicker{
    display:inline-block;font-size:13px;font-weight:600;color:var(--brand);
    letter-spacing:.02em;margin-bottom:12px;
  }
  .section-head h2{font-size:32px;margin-bottom:14px;position:relative;padding-left:16px;}
  .section-head h2::before{
    content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;
    background:linear-gradient(180deg,#16E0C0,#7A5CFF);
  }
  .section-head p{font-size:15px;color:var(--tx-2);}

  /* ---------- 时间轴步骤流 ---------- */
  .steps{padding-top:8px;}
  .step{position:relative;display:grid;grid-template-columns:76px 1fr;gap:22px;padding-bottom:26px;}
  .step::before{
    content:"";position:absolute;left:37px;top:62px;bottom:-2px;width:1px;
    background:linear-gradient(180deg,rgba(22,224,192,.5),rgba(122,92,255,.12));
  }
  .step:last-child::before{display:none;}
  .step-num{
    width:56px;height:56px;border-radius:16px;display:grid;place-items:center;
    background:rgba(16,27,46,.9);border:1px solid rgba(22,224,192,.3);
    color:var(--brand);font-weight:800;font-size:18px;
    box-shadow:0 12px 30px -18px rgba(22,224,192,.9);
  }
  .step-body{
    padding:22px 24px;border-radius:var(--r-lg);
    background:var(--glass);border:1px solid var(--line);
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    box-shadow:var(--shadow-card);
    transition:border-color .2s ease-out,transform .2s ease-out;
  }
  .step-body:hover{border-color:var(--line-strong);transform:translateY(-2px);}
  .step-body h3{font-size:22px;margin-bottom:10px;}
  .step-body > p{font-size:15px;color:var(--tx-2);max-width:60ch;}
  .step-figure{
    display:grid;grid-template-columns:1fr 240px;gap:22px;align-items:center;
  }
  .step-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-md);border:1px solid var(--line);}
  .checklist{margin-top:16px;display:grid;gap:8px;}
  .checklist li{position:relative;padding-left:18px;font-size:14px;color:var(--tx-2);}
  .checklist li::before{
    content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;
    background:linear-gradient(135deg,#16E0C0,#7A5CFF);
  }
  .step-meta{margin-top:14px;display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:12px;color:var(--tx-3);}

  /* ---------- 两栏说明区 ---------- */
  .split{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
  .panel{
    padding:26px 24px;border-radius:var(--r-lg);
    background:rgba(11,18,32,.75);border:1px solid var(--line);
    box-shadow:var(--shadow-card);
  }
  .panel h3{font-size:19px;margin-bottom:6px;}
  .panel .panel-sub{font-size:13px;color:var(--tx-3);margin-bottom:16px;}
  .panel ol{counter-reset:item;display:grid;gap:12px;}
  .panel ol li{
    counter-increment:item;position:relative;padding-left:34px;font-size:14px;color:var(--tx-2);
  }
  .panel ol li::before{
    content:counter(item,decimal-leading-zero);
    position:absolute;left:0;top:1px;width:24px;height:24px;border-radius:8px;
    display:grid;place-items:center;font-size:12px;font-weight:700;
    background:rgba(22,224,192,.12);border:1px solid rgba(22,224,192,.3);color:var(--brand);
  }
  .panel.alt ol li::before{
    background:rgba(122,92,255,.14);border-color:rgba(122,92,255,.34);color:#B9A8FF;
  }
  .panel li b{color:var(--tx-1);font-weight:600;}

  /* ---------- 关联分类 ---------- */
  .rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
  .rel-card{
    display:flex;flex-direction:column;overflow:hidden;border-radius:var(--r-lg);
    background:var(--glass);border:1px solid var(--line);
    transition:border-color .2s ease-out,transform .2s ease-out;
  }
  .rel-card:hover{border-color:var(--line-strong);transform:translateY(-2px);}
  .rel-card img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .2s ease-out;}
  .rel-card:hover img{transform:scale(1.03);}
  .rel-body{padding:16px 18px 18px;}
  .rel-body h3{font-size:17px;margin-bottom:6px;}
  .rel-body p{font-size:13px;color:var(--tx-2);}
  .rel-body .rel-link{margin-top:12px;display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--brand);}
  .rel-card.is-current{border-color:rgba(22,224,192,.45);background:rgba(22,224,192,.06);}

  /* ---------- FAQ ---------- */
  .faq-list{display:grid;gap:12px;}
  .faq-item{
    border-radius:var(--r-lg);border:1px solid var(--line);
    background:var(--glass);overflow:hidden;
  }
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 20px;text-align:left;font-size:16px;font-weight:600;color:var(--tx-1);
    transition:color .18s ease-out;
  }
  .faq-q:hover{color:var(--brand);}
  .faq-icon{
    flex:0 0 auto;width:22px;height:22px;position:relative;
    transition:transform .2s ease-out;
  }
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
    transform:translate(-50%,-50%);
  }
  .faq-icon::before{width:12px;height:1.5px;}
  .faq-icon::after{width:1.5px;height:12px;}
  .faq-item.open .faq-icon{transform:rotate(180deg);}
  .faq-item.open .faq-icon::after{opacity:0;}
  .faq-a{
    display:grid;grid-template-rows:0fr;transition:grid-template-rows .2s ease-out;
  }
  .faq-item.open .faq-a{grid-template-rows:1fr;}
  .faq-a-inner{overflow:hidden;}
  .faq-a p{padding:0 20px 20px;font-size:15px;color:var(--tx-2);border-top:1px solid var(--line);padding-top:16px;}

  /* ---------- CTA ---------- */
  .cta-block{
    position:relative;overflow:hidden;border-radius:var(--r-lg);
    background:linear-gradient(120deg,rgba(11,18,32,.96),rgba(16,27,46,.9));
    border:1px solid var(--line);
    padding:52px 48px;
  }
  .cta-block::before{
    content:"";position:absolute;top:-60px;right:-40px;width:320px;height:240px;
    background:linear-gradient(135deg,rgba(22,224,192,.22),rgba(122,92,255,.05));
    transform:skewX(-18deg);filter:blur(2px);opacity:.9;
  }
  .cta-inner{position:relative;z-index:2;max-width:640px;}
  .cta-inner h2{font-size:32px;margin-bottom:14px;}
  .cta-inner p{font-size:15px;color:var(--tx-2);margin-bottom:26px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:#050A12;border-top:1px solid var(--line);padding:56px 0 0;margin-top:24px;}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-bottom:38px;}
  .footer-brand .logo{margin-bottom:16px;}
  .footer-brand p{font-size:14px;color:var(--tx-2);max-width:34ch;}
  .footer-brand .contact{margin-top:16px;font-size:13px;color:var(--tx-3);line-height:2;}
  .footer-col h4{font-size:15px;margin-bottom:16px;color:var(--tx-1);}
  .footer-col ul{display:grid;gap:10px;}
  .footer-col a{font-size:14px;color:var(--tx-2);}
  .footer-col a:hover{color:var(--brand);}
  .footer-bottom{
    border-top:1px solid var(--line);padding:20px 0;
    display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
    font-size:13px;color:var(--tx-3);
  }
  .footer-bottom .policies{display:flex;gap:18px;flex-wrap:wrap;}
  .footer-bottom .policies a:hover{color:var(--brand);}

  /* ---------- 固定转化条 ---------- */
  .fixed-cta{
    position:fixed;left:0;right:0;bottom:0;z-index:70;
    background:rgba(8,13,24,.86);
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border-top:1px solid rgba(22,224,192,.28);
    padding:10px 0 calc(10px + env(safe-area-inset-bottom));
    transform:translateY(130%);
    transition:transform .25s ease-out;
  }
  .fixed-cta.show{transform:translateY(0);}
  .fixed-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;}
  .fixed-inner span{font-size:14px;color:var(--tx-2);}
  .fixed-inner span b{color:var(--tx-1);font-weight:600;}

  /* ---------- 移动抽屉 ---------- */
  .drawer{
    position:fixed;inset:0;z-index:90;background:rgba(6,10,18,.97);
    backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
    display:flex;flex-direction:column;padding:22px 24px 32px;
    transform:translateX(100%);transition:transform .25s ease-out;
  }
  .drawer.open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
  .drawer-close{
    width:42px;height:42px;border-radius:var(--r-sm);border:1px solid var(--line);
    color:var(--tx-1);display:grid;place-items:center;font-size:20px;
  }
  .drawer-nav{display:grid;gap:6px;margin-bottom:26px;}
  .drawer-nav a{
    padding:14px 4px;font-size:17px;color:var(--tx-1);border-bottom:1px solid var(--line);
  }
  .drawer-nav a.active{color:var(--brand);}
  .drawer-foot{margin-top:auto;display:grid;gap:14px;font-size:13px;color:var(--tx-3);}

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    .nav-links{display:none;}
    .nav-actions .btn-primary{display:none;}
    .menu-toggle{display:inline-flex;}
    .cat-hero h1{font-size:34px;}
    .section-head h2{font-size:26px;}
    .section{padding:56px 0;}
    .rel-grid{grid-template-columns:repeat(2,1fr);}
    .split{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr 1fr;}
    .cta-block{padding:38px 28px;}
    .cta-inner h2{font-size:26px;}
  }
  @media (max-width:767px){
    body{font-size:15px;}
    .container{padding:0 16px;}
    .topbar .container{height:auto;padding-top:8px;padding-bottom:8px;font-size:12px;}
    .nav-wrap{height:60px;}
    .logo{font-size:15px;}
    .cat-hero{padding-top:18px;}
    .cat-hero h1{font-size:28px;}
    .banner-strip{height:200px;margin-top:28px;}
    .banner-inner{padding:18px;}
    .banner-inner h2{font-size:19px;}
    .section{padding:46px 0;}
    .section-head h2{font-size:24px;}
    .step{grid-template-columns:44px 1fr;gap:14px;}
    .step::before{left:21px;top:52px;}
    .step-num{width:42px;height:42px;border-radius:12px;font-size:15px;}
    .step-body{padding:18px;}
    .step-body h3{font-size:19px;}
    .step-figure{grid-template-columns:1fr;gap:14px;}
    .step-figure img{order:-1;}
    .step-body:hover{transform:none;}
    .rel-grid{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;gap:26px;}
    .fixed-inner span{display:none;}
    .fixed-inner{justify-content:center;}
    .fixed-inner .btn{width:100%;}
    .cta-actions .btn{width:100%;}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;}
    html{scroll-behavior:auto;}
  }

/* roulang page: category3 */
:root{
  --bg-0:#060A12;
  --bg-1:#0B1220;
  --bg-2:#101B2E;
  --line:rgba(255,255,255,.08);
  --brand:#16E0C0;
  --brand-2:#7A5CFF;
  --tx-1:#E9EEF6;
  --tx-2:#A9B6CB;
  --tx-3:#6C7C96;
  --warn:#FFB020;
  --err:#FF6B7A;
  --r-lg:14px;
  --r-md:12px;
  --r-sm:10px;
  --shadow-card:0 24px 48px -28px rgba(0,0,0,.85);
  --glow:0 10px 26px -8px rgba(22,224,192,.5);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--tx-2);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  padding-bottom:76px;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{color:var(--tx-1);margin:0;letter-spacing:-0.01em;line-height:1.35}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums;font-family:Inter,system-ui,-apple-system,sans-serif}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.narrow{max-width:920px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:70;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .2s ease-out,border-color .2s ease-out,backdrop-filter .2s ease-out;
}
.site-header.scrolled{
  background:rgba(6,10,18,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.header-inner{display:flex;align-items:center;gap:32px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--tx-1);font-weight:700;font-size:17px;letter-spacing:-0.01em;white-space:nowrap}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:9px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#05130F;font-size:13px;font-weight:800;letter-spacing:0;
  box-shadow:var(--glow);
}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-links a{
  position:relative;
  font-size:15px;color:var(--tx-2);
  padding:6px 2px;
  transition:color .18s ease-out;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-8px;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  border-radius:2px;opacity:0;transition:opacity .18s ease-out;
}
.nav-links a:hover{color:var(--tx-1)}
.nav-links a.active{color:var(--brand)}
.nav-links a.active::after{opacity:1}
.nav-cta{margin-left:8px;padding:10px 18px;font-size:14px}
.menu-toggle{
  display:none;margin-left:auto;
  width:42px;height:42px;align-items:center;justify-content:center;
  background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:var(--r-sm);
  color:var(--tx-1);cursor:pointer;transition:border-color .18s ease-out;
}
.menu-toggle:hover{border-color:rgba(22,224,192,.35)}
.mobile-drawer{
  position:fixed;left:0;right:0;top:60px;bottom:0;z-index:65;
  background:rgba(6,10,18,.97);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  padding:20px 24px calc(32px + env(safe-area-inset-bottom));
  opacity:0;transform:translateY(-8px);pointer-events:none;
  transition:opacity .2s ease-out,transform .2s ease-out;
  overflow-y:auto;
}
.mobile-drawer.open{opacity:1;transform:none;pointer-events:auto}
.drawer-nav a{
  display:block;padding:20px 0;font-size:17px;font-weight:600;color:var(--tx-1);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--brand)}
.drawer-cta{margin-top:28px;width:100%;justify-content:center}
.drawer-contact{margin-top:20px;font-size:14px;color:var(--tx-3);line-height:2}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out,background .18s ease-out,color .18s ease-out;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 100%);
  color:#04140F;box-shadow:var(--glow);
}
.btn-primary:hover{box-shadow:0 14px 32px -8px rgba(22,224,192,.68);transform:translateY(-1px)}
.btn-ghost{
  background:rgba(255,255,255,.03);border-color:var(--line);color:var(--tx-1);
}
.btn-ghost:hover{border-color:rgba(22,224,192,.45);color:var(--tx-1);transform:translateY(-1px)}
.btn:active{transform:translateY(0) scale(.99)}
.btn[disabled],.btn:disabled{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--tx-2);
  font-size:15px;font-weight:600;border-bottom:1px dashed rgba(169,182,203,.4);
  padding-bottom:2px;transition:color .18s ease-out,border-color .18s ease-out;
}
.btn-link:hover{color:var(--brand);border-color:var(--brand)}

/* ============ 基础组件 ============ */
.badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 13px;border-radius:999px;
  background:rgba(22,224,192,.09);border:1px solid rgba(22,224,192,.25);
  color:var(--brand);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-dot{width:6px;height:6px;border-radius:999px;background:var(--brand);box-shadow:0 0 8px var(--brand)}
.glass{
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
  transition:border-color .18s ease-out,transform .18s ease-out;
}
.glass:hover{border-color:rgba(22,224,192,.35);transform:translateY(-2px)}
.section{padding:72px 0}
.section-tight{padding:48px 0}
.section-title{font-size:32px;font-weight:700;margin-bottom:14px}
.section-title::before{
  content:"";display:inline-block;width:4px;height:22px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
  margin-right:12px;vertical-align:-2px;
}
.section-desc{font-size:16px;color:var(--tx-2);max-width:760px}
.eyebrow{font-size:12px;letter-spacing:.14em;color:var(--brand);font-weight:700;text-transform:uppercase}

/* ============ 面包屑 ============ */
.crumb{padding:26px 0 0}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--tx-3)}
.crumb a{color:var(--tx-2);transition:color .18s ease-out}
.crumb a:hover{color:var(--brand)}
.crumb li[aria-current]{color:var(--tx-2);font-weight:600;max-width:60%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.crumb .sep{color:var(--tx-3);opacity:.6}

/* ============ Hero ============ */
.hero{padding:56px 0 40px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;position:relative;z-index:2}
.hero h1{font-size:48px;font-weight:800;margin:22px 0 18px}
.hero-sub{font-size:17px;color:var(--tx-2);max-width:36em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:36px;margin-top:38px}
.metric-num{font-size:26px;font-weight:800;color:var(--tx-1)}
.metric-num span{font-size:14px;font-weight:600;color:var(--brand);margin-left:4px}
.metric-label{font-size:13px;color:var(--tx-3);margin-top:2px}
.hero-side{padding:28px}
.hero-side-title{font-size:16px;font-weight:700;color:var(--tx-1);margin-bottom:6px}
.hero-side-sub{font-size:13px;color:var(--tx-3);margin-bottom:18px}
.side-row{display:flex;gap:12px;padding:13px 0;border-top:1px solid var(--line);font-size:14px}
.side-row:first-of-type{border-top:0}
.side-idx{
  flex:0 0 24px;height:24px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(22,224,192,.12);color:var(--brand);font-size:12px;font-weight:700;
}
.hero-deco-a{
  position:absolute;right:-60px;top:-40px;width:420px;height:220px;
  background:linear-gradient(135deg,rgba(22,224,192,.14),rgba(122,92,255,.05) 60%,transparent);
  transform:skewX(-18deg);filter:blur(2px);pointer-events:none;
}
.hero-deco-b{
  position:absolute;left:-20px;bottom:-30px;width:280px;height:180px;
  background-image:radial-gradient(rgba(22,224,192,.18) 1px,transparent 1px);
  background-size:16px 16px;opacity:.5;pointer-events:none;
}

/* ============ 窄幅图位 ============ */
.banner-strip{
  position:relative;height:220px;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);margin-top:44px;
}
.banner-strip img{width:100%;height:100%;object-fit:cover;opacity:.55}
.banner-mask{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(6,10,18,.94) 8%,rgba(11,18,32,.6) 55%,rgba(11,18,32,.35) 100%);
}
.banner-text{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;gap:8px}
.banner-text strong{color:var(--tx-1);font-size:20px;font-weight:700}
.banner-text span{font-size:14px;color:var(--tx-2);max-width:34em}

/* ============ 对比表格 ============ */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--r-lg);overflow-x:auto;
  background:rgba(255,255,255,.03);
  box-shadow:var(--shadow-card);
}
table.cmp{width:100%;min-width:780px;border-collapse:collapse}
table.cmp th{
  text-align:left;padding:16px 18px;font-size:14px;font-weight:700;color:var(--tx-1);
  background:rgba(22,224,192,.07);border-bottom:1px solid var(--line);white-space:nowrap;
}
table.cmp td{
  padding:16px 18px;font-size:15px;color:var(--tx-2);border-top:1px solid var(--line);
  vertical-align:top;
}
table.cmp tbody tr:nth-child(even){background:rgba(255,255,255,.022)}
table.cmp tbody tr:hover{background:rgba(22,224,192,.05)}
table.cmp td:first-child{color:var(--tx-1);font-weight:600;white-space:nowrap}
.cell-tag{
  display:inline-block;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(122,92,255,.14);color:#B8A8FF;border:1px solid rgba(122,92,255,.28);
}
.cell-tag.warn{background:rgba(255,176,32,.12);color:var(--warn);border-color:rgba(255,176,32,.28)}
.table-note{margin-top:12px;font-size:13px;color:var(--tx-3)}

/* ============ 步骤轴 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:36px}
.step{position:relative;padding-right:12px}
.step::before{
  content:"";position:absolute;left:0;top:14px;width:100%;height:1px;
  background:linear-gradient(90deg,rgba(22,224,192,.5),rgba(22,224,192,.06));
}
.step:last-child::before{background:linear-gradient(90deg,rgba(22,224,192,.5),transparent)}
.step-num{
  position:relative;z-index:2;
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:999px;font-size:13px;font-weight:800;
  background:var(--bg-2);border:1px solid rgba(22,224,192,.4);color:var(--brand);
}
.step h3{font-size:18px;margin:16px 0 8px}
.step p{font-size:14px;color:var(--tx-2)}

/* ============ 补充卡片 ============ */
.supp-grid{display:grid;grid-template-columns:6fr 6fr;gap:24px;margin-top:36px}
.supp-card{padding:26px;display:flex;flex-direction:column;gap:14px}
.supp-card h3{font-size:20px}
.supp-card .cover{border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line)}
.supp-card .cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .25s ease-out}
.supp-card:hover .cover img{transform:scale(1.03)}
.check-list li{display:flex;gap:10px;font-size:15px;padding:9px 0;border-top:1px solid var(--line)}
.check-list li:first-child{border-top:0}
.check-list .dot{flex:0 0 8px;height:8px;margin-top:9px;border-radius:2px;background:var(--brand)}
.mini-meta{font-size:13px;color:var(--tx-3)}

/* ============ FAQ ============ */
.faq{border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:rgba(255,255,255,.03);backdrop-filter:blur(14px);box-shadow:var(--shadow-card)}
.faq-item{border-top:1px solid var(--line)}
.faq-item:first-child{border-top:0}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;background:transparent;border:0;cursor:pointer;text-align:left;
  color:var(--tx-1);font-size:16px;font-weight:600;transition:color .18s ease-out;
}
.faq-q:hover{color:var(--brand)}
.faq-icon{flex:0 0 20px;color:var(--brand);transition:transform .2s ease-out}
.faq-item.open .faq-icon{transform:rotate(180deg)}
.faq-item.open .faq-icon .v-line{opacity:0}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .2s ease-out}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a > div{overflow:hidden}
.faq-a p{padding:0 24px 22px;font-size:15px;color:var(--tx-2);max-width:52em}

/* ============ 关联分类 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:32px}
.rel-card{padding:22px;display:flex;flex-direction:column;gap:10px;height:100%}
.rel-card h3{font-size:17px}
.rel-card p{font-size:14px;color:var(--tx-2)}
.rel-card .arrow{font-size:13px;color:var(--brand);font-weight:600;margin-top:auto}
.rel-card.current{border-color:rgba(22,224,192,.45);background:rgba(22,224,192,.06)}
.rel-flag{font-size:12px;color:var(--brand);font-weight:600}

/* ============ CTA 区块 ============ */
.cta-block{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,rgba(11,18,32,.96),rgba(6,10,18,.96));
  border:1px solid var(--line);border-radius:var(--r-lg);
  padding:56px 40px;margin:0 0 72px;
}
.cta-block::after{
  content:"";position:absolute;right:-80px;top:-40px;width:380px;height:260px;
  background:linear-gradient(135deg,rgba(22,224,192,.2),rgba(122,92,255,.06) 60%,transparent);
  transform:skewX(-18deg);pointer-events:none;
}
.cta-block h2{font-size:32px;margin-bottom:14px;position:relative;z-index:2}
.cta-block p{max-width:44em;position:relative;z-index:2}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;position:relative;z-index:2}

/* ============ 页脚 ============ */
.site-footer{
  background:#050A12;border-top:1px solid var(--line);
  padding:56px 0 calc(28px + env(safe-area-inset-bottom));
}
.footer-grid{display:grid;grid-template-columns:2.2fr 1fr 1fr 1fr;gap:36px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--tx-2);max-width:30em}
.contact{margin-top:16px;font-size:13px;color:var(--tx-3);line-height:2}
.footer-col h4{font-size:15px;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--tx-2);transition:color .18s ease-out}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--tx-3);
}
.policies{display:flex;gap:18px}
.policies a:hover{color:var(--brand)}

/* ============ 固定转化条 ============ */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:80;
  background:rgba(6,10,18,.86);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-top:1px solid rgba(22,224,192,.22);
  transform:translateY(110%);
  transition:transform .25s ease-out;
  padding-bottom:env(safe-area-inset-bottom);
}
.sticky-bar.show{transform:none}
.sticky-inner{display:flex;align-items:center;gap:20px;height:64px}
.sticky-text{font-size:14px;color:var(--tx-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sticky-text strong{color:var(--tx-1);font-weight:700}
.sticky-actions{margin-left:auto;display:flex;gap:12px;flex:0 0 auto}
.sticky-actions .btn{padding:10px 20px;font-size:14px}
.sticky-actions .btn-ghost{display:none}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .nav-links,.nav-cta{display:none}
  .menu-toggle{display:inline-flex}
  .header-inner{height:60px}
  .hero{padding:36px 0 28px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero h1{font-size:34px}
  .section{padding:52px 0}
  .section-title{font-size:26px}
  .steps{grid-template-columns:1fr 1fr;gap:20px}
  .supp-grid{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-block{padding:40px 26px}
  .cta-block h2{font-size:26px}
}
@media (max-width:640px){
  body{font-size:15px;padding-bottom:84px}
  .container{padding:0 16px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:15px}
  .hero-metrics{gap:24px;margin-top:28px}
  .metric-num{font-size:22px}
  .hero-side{padding:22px}
  .banner-strip{height:190px;margin-top:32px}
  .banner-text strong{font-size:17px}
  .section{padding:44px 0}
  .section-title{font-size:24px}
  .steps{grid-template-columns:1fr;gap:22px}
  .step::before{display:none}
  .step{padding-left:0}
  .rel-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .faq-q{padding:18px 18px;font-size:15px}
  .faq-a p{padding:0 18px 20px}
  .cta-block{margin-bottom:52px;padding:34px 20px}
  .sticky-inner{height:auto;min-height:64px;padding-top:10px;padding-bottom:10px;gap:12px}
  .sticky-text{display:none}
  .sticky-actions{width:100%;margin-left:0}
  .sticky-actions .btn{width:100%;justify-content:center}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
}

/* roulang page: category4 */
:root{
    --bg-0:#060A12;
    --bg-1:#0B1220;
    --bg-2:#101B2E;
    --line:rgba(255,255,255,.08);
    --brand:#16E0C0;
    --brand-2:#7A5CFF;
    --tx-1:#E9EEF6;
    --tx-2:#A9B6CB;
    --tx-3:#6C7C96;
    --warn:#FFB020;
    --err:#FF6B7A;
    --r-card:14px;
    --r-sm:10px;
    --r-img:12px;
    --shadow-card:0 24px 48px -28px rgba(0,0,0,.85);
    --glow:0 10px 26px -8px rgba(22,224,192,.5);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg-0);
    color:var(--tx-2);
    font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    padding-bottom:72px;
  }
  body.no-scroll{overflow:hidden;}
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  h1,h2,h3,h4{color:var(--tx-1);margin:0;letter-spacing:0;font-weight:700;line-height:1.35;}
  h1{font-size:48px;font-weight:800;line-height:1.25;}
  h2{font-size:32px;}
  h3{font-size:22px;}
  p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  ::selection{background:rgba(22,224,192,.28);color:#fff;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
  .num{font-family:Inter,system-ui,-apple-system,sans-serif;font-variant-numeric:tabular-nums;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:transparent;
    transition:background .2s ease-out,border-color .2s ease-out,backdrop-filter .2s ease-out;
    border-bottom:1px solid transparent;
  }
  .site-header.scrolled{
    background:rgba(6,10,18,.72);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom-color:var(--line);
  }
  .nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px;}
  .logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--tx-1);white-space:nowrap;}
  .logo-mark{
    display:inline-flex;align-items:center;justify-content:center;
    width:32px;height:32px;border-radius:9px;
    background:linear-gradient(135deg,var(--brand),var(--brand-2));
    color:#04140F;font-size:13px;font-weight:800;letter-spacing:.02em;
    box-shadow:var(--glow);
  }
  .nav-links{display:flex;align-items:center;gap:28px;}
  .nav-links a{
    position:relative;font-size:15px;color:var(--tx-2);padding:6px 0;
    transition:color .18s ease-out;
  }
  .nav-links a::after{
    content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
    background:var(--brand);opacity:0;transition:opacity .18s ease-out;
    box-shadow:0 0 10px rgba(22,224,192,.7);
  }
  .nav-links a:hover{color:var(--tx-1);}
  .nav-links a:hover::after{opacity:.5;}
  .nav-links a.active{color:var(--brand);font-weight:600;}
  .nav-links a.active::after{opacity:1;}
  .nav-actions{display:flex;align-items:center;gap:12px;}
  .nav-toggle{
    display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-sm);
    align-items:center;justify-content:center;color:var(--tx-1);
  }
  .nav-toggle svg{width:20px;height:20px;}

  .nav-drawer{
    display:none;position:fixed;inset:0;z-index:70;
    background:rgba(6,10,18,.96);
    backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
    padding:88px 24px 120px;
  }
  .nav-drawer.open{display:block;}
  .nav-drawer ul{display:flex;flex-direction:column;gap:4px;margin-bottom:28px;}
  .nav-drawer a.drawer-link{
    display:flex;align-items:center;justify-content:space-between;
    min-height:52px;padding:0 4px;font-size:17px;color:var(--tx-1);
    border-bottom:1px solid var(--line);
  }
  .nav-drawer a.drawer-link.active{color:var(--brand);}
  .drawer-meta{margin-top:26px;font-size:14px;color:var(--tx-3);line-height:1.9;}
  .drawer-close{
    position:absolute;top:16px;right:20px;width:42px;height:42px;border:1px solid var(--line);
    border-radius:var(--r-sm);display:flex;align-items:center;justify-content:center;color:var(--tx-1);
  }

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 22px;border-radius:var(--r-sm);
    font-size:15px;font-weight:600;letter-spacing:0;
    transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out,color .18s ease-out,background .18s ease-out;
    white-space:nowrap;
  }
  .btn svg{width:18px;height:18px;}
  .btn-primary{
    background:linear-gradient(135deg,var(--brand),var(--brand-2));
    color:#04140F;box-shadow:var(--glow);
  }
  .btn-primary:hover{box-shadow:0 12px 30px -8px rgba(22,224,192,.68);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0) scale(.99);}
  .btn-ghost{
    border:1px solid var(--line);color:var(--tx-1);background:rgba(255,255,255,.02);
  }
  .btn-ghost:hover{border-color:rgba(22,224,192,.55);color:var(--brand);transform:translateY(-1px);}
  .btn-ghost:active{transform:translateY(0) scale(.99);}
  .btn-sm{height:38px;padding:0 16px;font-size:14px;}
  .btn-link{
    display:inline-flex;align-items:center;gap:6px;color:var(--tx-2);font-size:15px;font-weight:600;
    padding-bottom:2px;border-bottom:1px solid transparent;transition:color .18s ease-out,border-color .18s ease-out;
  }
  .btn-link:hover{color:var(--brand);border-bottom-color:rgba(22,224,192,.5);}
  .btn:disabled,.btn[aria-disabled="true"]{opacity:.4;box-shadow:none;pointer-events:none;}

  /* ---------- breadcrumb ---------- */
  .breadcrumb{padding:26px 0 0;font-size:14px;color:var(--tx-3);display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
  .breadcrumb a{color:var(--tx-2);transition:color .18s ease-out;}
  .breadcrumb a:hover{color:var(--brand);}
  .breadcrumb .sep{color:var(--tx-3);opacity:.6;}
  .breadcrumb .current{color:var(--tx-1);}

  /* ---------- hero ---------- */
  .hero{padding:56px 0 0;position:relative;overflow:hidden;}
  .hero::before{
    content:"";position:absolute;top:-120px;right:-160px;width:520px;height:320px;
    background:linear-gradient(135deg,rgba(22,224,192,.10),rgba(122,92,255,.06) 60%,transparent);
    transform:skewX(-18deg);filter:blur(2px);pointer-events:none;
  }
  .hero::after{
    content:"";position:absolute;left:-40px;bottom:-30px;width:280px;height:200px;
    background-image:radial-gradient(rgba(169,182,203,.16) 1px,transparent 1px);
    background-size:16px 16px;opacity:.5;pointer-events:none;
  }
  .hero-inner{position:relative;z-index:1;max-width:840px;}
  .badge{
    display:inline-flex;align-items:center;gap:8px;
    padding:6px 14px;border-radius:999px;border:1px solid rgba(22,224,192,.35);
    background:rgba(22,224,192,.08);color:var(--brand);font-size:13px;font-weight:600;
  }
  .hero h1{margin:20px 0 18px;max-width:22ch;}
  .hero-sub{font-size:17px;color:var(--tx-2);max-width:44ch;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
  .hero-stats{display:flex;flex-wrap:wrap;gap:44px;margin-top:44px;}
  .stat-num{font-size:30px;font-weight:800;color:var(--tx-1);line-height:1.2;}
  .stat-num em{font-style:normal;color:var(--brand);font-size:18px;margin-left:4px;}
  .stat-label{font-size:14px;color:var(--tx-3);}

  .hero-visual{
    position:relative;margin-top:44px;height:236px;border-radius:var(--r-card);
    overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card);
  }
  .hero-visual img{width:100%;height:100%;object-fit:cover;}
  .hero-visual .veil{
    position:absolute;inset:0;
    background:linear-gradient(90deg,rgba(6,10,18,.92) 0%,rgba(11,18,32,.72) 52%,rgba(6,10,18,.42) 100%);
  }
  .hero-visual .caption{
    position:absolute;left:28px;bottom:24px;right:28px;z-index:2;
    display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  }
  .hero-visual .caption strong{color:var(--tx-1);font-size:17px;font-weight:700;}
  .hero-visual .caption span{font-size:14px;color:var(--tx-2);}
  .tag{
    display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;
    font-size:12px;font-weight:600;letter-spacing:0;
    border:1px solid var(--line);color:var(--tx-2);background:rgba(255,255,255,.04);
  }
  .tag-brand{border-color:rgba(22,224,192,.35);color:var(--brand);background:rgba(22,224,192,.08);}
  .tag-purple{border-color:rgba(122,92,255,.35);color:#B7A6FF;background:rgba(122,92,255,.10);}

  /* ---------- sections ---------- */
  .section{padding:88px 0 0;}
  .section-head{max-width:720px;margin-bottom:36px;}
  .section-head .eyebrow{
    display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:700;
    color:var(--brand);margin-bottom:14px;
  }
  .section-head .eyebrow::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--brand);}
  .section-head h2{margin-bottom:14px;}
  .section-head p{color:var(--tx-2);}

  .glass{
    background:rgba(255,255,255,.04);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
    transition:border-color .18s ease-out,transform .18s ease-out;
  }
  .glass-hover:hover{border-color:rgba(22,224,192,.35);transform:translateY(-2px);}

  /* ---------- faq groups ---------- */
  .faq-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:34px;}
  .faq-group-head{display:flex;align-items:center;gap:14px;margin-bottom:18px;flex-wrap:wrap;}
  .faq-group-head h3{font-size:20px;}
  .faq-group-head .count{font-size:13px;color:var(--tx-3);}
  .faq-list{display:flex;flex-direction:column;gap:12px;}
  .faq-item{
    background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:var(--r-sm);
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    transition:border-color .18s ease-out,background .18s ease-out;
  }
  .faq-item:hover{border-color:rgba(22,224,192,.28);}
  .faq-item.open{border-color:rgba(22,224,192,.42);background:rgba(16,27,46,.72);}
  .faq-q{
    width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
    padding:18px 20px;text-align:left;font-size:16px;font-weight:600;color:var(--tx-1);line-height:1.6;
  }
  .faq-q h3{font-size:16px;font-weight:600;color:var(--tx-1);margin:0;line-height:1.6;}
  .faq-icon{
    flex:0 0 auto;width:24px;height:24px;border-radius:999px;border:1px solid var(--line);
    display:flex;align-items:center;justify-content:center;color:var(--brand);
    transition:transform .2s ease-out,border-color .2s ease-out;
  }
  .faq-icon svg{width:13px;height:13px;}
  .faq-item.open .faq-icon{transform:rotate(180deg);border-color:rgba(22,224,192,.5);}
  .faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .22s ease-out;}
  .faq-a>div{overflow:hidden;}
  .faq-item.open .faq-a{grid-template-rows:1fr;}
  .faq-a p{
    padding:0 20px 20px;font-size:15px;color:var(--tx-2);line-height:1.8;max-width:70ch;
  }
  .faq-a .hint{
    margin:0 20px 20px;padding:10px 14px;border-left:2px solid var(--brand);
    background:rgba(22,224,192,.06);border-radius:0 var(--r-sm) var(--r-sm) 0;
    font-size:14px;color:var(--tx-2);
  }

  /* ---------- guide cards ---------- */
  .guide-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
  .guide-card{padding:28px;display:flex;flex-direction:column;gap:16px;}
  .guide-card .thumb{
    width:100%;aspect-ratio:16/9;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);
  }
  .guide-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease-out;}
  .guide-card:hover .thumb img{transform:scale(1.03);}
  .guide-card h3{font-size:21px;}
  .guide-card p{font-size:15px;color:var(--tx-2);}

  /* ---------- related categories ---------- */
  .rel-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
  .rel-card{padding:22px;display:flex;flex-direction:column;gap:12px;min-height:100%;}
  .rel-card .no{font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.04em;}
  .rel-card h3{font-size:18px;}
  .rel-card p{font-size:14px;color:var(--tx-2);}
  .rel-card .go{margin-top:auto;font-size:14px;color:var(--tx-3);display:inline-flex;align-items:center;gap:6px;}
  .rel-card:hover .go{color:var(--brand);}
  .rel-card.is-current{border-color:rgba(22,224,192,.45);}
  .rel-card.is-current .no{color:var(--warn);}

  /* ---------- CTA ---------- */
  .cta-block{
    position:relative;overflow:hidden;margin-top:88px;
    background:linear-gradient(180deg,#050A12 0%,#0B1220 100%);
    border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  }
  .cta-block::before{
    content:"";position:absolute;top:-60px;left:50%;transform:translateX(-40%) skewX(-20deg);
    width:640px;height:220px;
    background:linear-gradient(135deg,rgba(22,224,192,.16),rgba(122,92,255,.10) 70%,transparent);
    pointer-events:none;
  }
  .cta-inner{position:relative;z-index:1;padding:72px 0;text-align:center;max-width:720px;margin:0 auto;}
  .cta-inner h2{margin-bottom:16px;}
  .cta-inner p{margin-bottom:30px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

  /* ---------- footer ---------- */
  .site-footer{background:#050A12;border-top:1px solid var(--line);padding:64px 0 24px;margin-top:0;}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;}
  .footer-brand .logo{margin-bottom:16px;}
  .footer-brand p{font-size:14px;color:var(--tx-2);max-width:34ch;}
  .footer-brand .contact{margin-top:16px;font-size:14px;color:var(--tx-3);line-height:1.9;}
  .footer-col h4{font-size:15px;margin-bottom:16px;color:var(--tx-1);}
  .footer-col li{margin-bottom:10px;}
  .footer-col a{font-size:14px;color:var(--tx-2);transition:color .18s ease-out;}
  .footer-col a:hover{color:var(--brand);}
  .footer-bottom{
    margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
    font-size:13px;color:var(--tx-3);
  }
  .footer-bottom .policies{display:flex;gap:18px;}
  .footer-bottom .policies a{transition:color .18s ease-out;}
  .footer-bottom .policies a:hover{color:var(--brand);}

  /* ---------- sticky convert bar ---------- */
  .convert-bar{
    position:fixed;left:0;right:0;bottom:0;z-index:55;
    background:rgba(6,10,18,.86);
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border-top:1px solid rgba(22,224,192,.22);
    padding-bottom:env(safe-area-inset-bottom);
    transform:translateY(110%);
    transition:transform .25s ease-out;
  }
  .convert-bar.show{transform:translateY(0);}
  .convert-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:60px;}
  .convert-text{font-size:14px;color:var(--tx-2);}
  .convert-text strong{color:var(--tx-1);font-weight:600;}

  /* ---------- responsive ---------- */
  @media (max-width:1023px){
    h1{font-size:34px;}
    h2{font-size:26px;}
    h3{font-size:20px;}
    .nav-links{display:none;}
    .nav-toggle{display:flex;}
    .nav-actions .btn{display:none;}
    .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
    .section{padding-top:64px;}
    .cta-inner{padding:56px 0;}
  }
  @media (max-width:767px){
    body{font-size:15px;}
    h1{font-size:30px;}
    h2{font-size:24px;}
    h3{font-size:19px;}
    .container{padding-left:16px;padding-right:16px;}
    .nav-inner{height:60px;}
    .hero{padding-top:34px;}
    .hero h1{margin:16px 0 14px;}
    .hero-sub{font-size:15px;}
    .hero-stats{gap:28px;margin-top:32px;}
    .stat-num{font-size:24px;}
    .hero-visual{height:190px;margin-top:34px;}
    .hero-visual .caption{left:18px;right:18px;bottom:18px;}
    .guide-grid{grid-template-columns:1fr;}
    .rel-grid{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;}
    .section{padding-top:56px;}
    .faq-q{padding:16px 16px;font-size:15px;}
    .faq-q h3{font-size:15px;}
    .faq-a p{padding:0 16px 18px;}
    .faq-a .hint{margin:0 16px 18px;}
    .glass-hover:hover{transform:none;}
    .guide-card:hover .thumb img{transform:none;}
    .convert-text{font-size:13px;}
    .convert-inner{min-height:56px;}
  }
  @media (max-width:519px){
    .hero-actions .btn{width:100%;}
    .cta-actions .btn{width:100%;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
  }