/* roulang page: index */
:root{
  --bg:#05080f;
  --bg-soft:#080d1a;
  --bg-deep:#040711;
  --panel:rgba(255,255,255,.045);
  --panel-hover:rgba(255,255,255,.078);
  --stroke:rgba(122,168,255,.16);
  --stroke-hi:rgba(122,190,255,.44);
  --text:#e9eefb;
  --dim:#9dabc9;
  --mute:#6b7a99;
  --accent:#3fa9ff;
  --accent-deep:#1b7ee0;
  --violet:#7c5cff;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 24px 48px -28px rgba(0,0,0,.96);
  --container:1180px;
  --t:.22s ease;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:100;padding:14px 16px 0;}
.header-inner{
  position:relative;
  max-width:var(--container);
  margin:0 auto;
  height:64px;
  display:flex;
  align-items:center;
  gap:18px;
  padding:0 12px 0 18px;
  border-radius:999px;
  border:1px solid var(--stroke);
  background:rgba(8,13,26,.72);
  backdrop-filter:blur(18px) saturate(150%);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  transition:var(--t);
}
.site-header.is-scrolled .header-inner{
  box-shadow:0 18px 36px -22px rgba(0,0,0,.95),0 0 0 1px rgba(63,169,255,.14);
  background:rgba(7,11,22,.9);
}
.logo{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;flex-shrink:0;}
.logo-mark{
  width:30px;height:30px;border-radius:9px;
  background:linear-gradient(135deg,var(--accent),var(--violet));
  box-shadow:0 0 18px rgba(63,169,255,.55);
  display:grid;place-items:center;
  font-size:13px;font-weight:800;color:#04101f;letter-spacing:-1px;
}
.logo-text{font-size:15px;font-weight:700;letter-spacing:.4px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  padding:8px 14px;border-radius:999px;font-size:14px;color:var(--dim);
  transition:var(--t);white-space:nowrap;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.07);}
.nav-link.is-active{
  color:#fff;background:rgba(63,169,255,.16);
  box-shadow:inset 0 0 0 1px rgba(63,169,255,.36);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:10px;font-size:14px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:var(--t);
  min-height:42px;
}
.btn-primary{
  background:linear-gradient(135deg,#48b0ff,#5c7dff);
  color:#04101f;
  box-shadow:0 0 22px rgba(63,169,255,.42);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 32px rgba(63,169,255,.72);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  border-color:var(--stroke-hi);color:#cfe2ff;background:rgba(255,255,255,.03);
}
.btn-ghost:hover{background:rgba(63,169,255,.12);border-color:var(--accent);transform:translateY(-2px);}
.nav-cta{padding:9px 18px;font-size:13px;min-height:38px;flex-shrink:0;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--stroke);background:rgba(255,255,255,.05);
  cursor:pointer;align-items:center;justify-content:center;flex-shrink:0;
}
.nav-toggle span{display:block;width:16px;height:1.6px;background:#cfe2ff;border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:1.6px;background:#cfe2ff;border-radius:2px;
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:66px 0 78px;
  background:
    radial-gradient(900px 420px at 50% -12%,rgba(63,169,255,.24),transparent 66%),
    radial-gradient(720px 400px at 88% 18%,rgba(124,92,255,.20),transparent 72%),
    var(--bg-deep);
  border-bottom:1px solid var(--stroke);
}
.hero-bg{position:absolute;inset:0;z-index:0;pointer-events:none;}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.2;}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(4,7,17,.55),rgba(4,7,17,.94));
}
.hero-inner{position:relative;z-index:1;text-align:center;max-width:880px;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:999px;font-size:13px;color:#a9caff;
  border:1px solid rgba(63,169,255,.34);background:rgba(63,169,255,.1);
  margin-bottom:22px;
}
.hero-badge i{
  width:6px;height:6px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 10px var(--accent);display:inline-block;
}
.hero h1{
  font-size:40px;line-height:1.3;font-weight:800;letter-spacing:.5px;
  margin:0 0 20px;
  background:linear-gradient(180deg,#ffffff 30%,#9ecbff 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{
  font-size:15.5px;color:var(--dim);line-height:1.85;
  max-width:760px;margin:0 auto 30px;
}
.hero-search{
  display:flex;gap:10px;max-width:620px;margin:0 auto 22px;
  padding:8px;border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--stroke);
  backdrop-filter:blur(12px);
  box-shadow:0 18px 40px -28px rgba(63,169,255,.7);
}
.hero-search input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;
  padding:0 18px;font-size:14.5px;min-height:44px;color:var(--text);
}
.hero-search input::placeholder{color:var(--mute);}
.hero-search .btn{padding:0 24px;min-height:44px;flex-shrink:0;}
.hero-chips{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:32px;}
.chip{
  padding:8px 16px;border-radius:999px;font-size:13px;color:#b7cbe8;
  border:1px solid var(--stroke);background:rgba(255,255,255,.035);
  transition:var(--t);
}
.chip:hover{color:#fff;border-color:var(--stroke-hi);background:rgba(63,169,255,.13);transform:translateY(-2px);}
.hero-points{
  display:flex;flex-wrap:wrap;justify-content:center;gap:36px;
  padding-top:26px;border-top:1px solid rgba(122,168,255,.12);
}
.hero-point{text-align:center;}
.hero-point b{display:block;font-size:24px;font-weight:800;color:#fff;letter-spacing:.5px;}
.hero-point span{font-size:12.5px;color:var(--mute);letter-spacing:.4px;}

/* ---------- sections ---------- */
.section{padding:72px 0;position:relative;}
.section-alt{background:var(--bg-soft);border-top:1px solid rgba(122,168,255,.08);border-bottom:1px solid rgba(122,168,255,.08);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:1.5px;color:var(--accent);
  text-transform:uppercase;margin-bottom:12px;font-weight:600;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--accent),transparent);}
.section-head.center .eyebrow::before{display:none;}
.section-head h2{font-size:28px;line-height:1.42;font-weight:700;letter-spacing:.3px;margin-bottom:14px;}
.section-head p{font-size:14.5px;color:var(--dim);line-height:1.85;}

.grid{display:grid;gap:20px;}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}

/* ---------- cards ---------- */
.card{
  position:relative;height:100%;
  padding:26px 24px;border-radius:var(--radius);
  border:1px solid var(--stroke);
  background:var(--panel);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  transition:var(--t);
}
.card:hover{
  transform:translateY(-4px);
  border-color:var(--stroke-hi);
  background:var(--panel-hover);
  box-shadow:0 22px 44px -28px rgba(63,169,255,.6);
}
.card-icon{
  width:42px;height:42px;border-radius:12px;margin-bottom:16px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(63,169,255,.22),rgba(124,92,255,.18));
  border:1px solid rgba(63,169,255,.3);
  color:#9ed0ff;font-size:15px;font-weight:800;
}
.card h3{font-size:16.5px;font-weight:700;line-height:1.5;margin-bottom:10px;}
.card p{font-size:14px;color:var(--dim);line-height:1.78;}

/* ---------- stats ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--stroke);border:1px solid var(--stroke);
  border-radius:var(--radius);overflow:hidden;
}
.stat{background:rgba(8,13,26,.9);padding:30px 22px;text-align:center;transition:var(--t);}
.stat:hover{background:rgba(63,169,255,.07);}
.stat-num{
  display:block;font-size:32px;font-weight:800;letter-spacing:.5px;line-height:1.2;
  background:linear-gradient(180deg,#ffffff,#68b6ff);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-label{display:block;margin-top:8px;font-size:13px;color:var(--mute);}

/* ---------- case cards ---------- */
.case{overflow:hidden;padding:0;}
.case-img{position:relative;aspect-ratio:16/9;overflow:hidden;}
.case-img img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.case:hover .case-img img{transform:scale(1.06);}
.case-img::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(5,8,15,.86));
}
.case-body{padding:22px 24px 26px;}
.case-tag{
  display:inline-block;font-size:12px;color:#9ed0ff;
  border:1px solid rgba(63,169,255,.35);background:rgba(63,169,255,.1);
  padding:3px 10px;border-radius:999px;margin-bottom:12px;
}
.case-body h3{font-size:16px;font-weight:700;margin-bottom:10px;}
.case-body p{font-size:13.8px;color:var(--dim);line-height:1.78;}

/* ---------- compare ---------- */
.compare-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--stroke);}
table.compare{width:100%;border-collapse:collapse;min-width:620px;background:rgba(255,255,255,.02);}
table.compare th,table.compare td{
  padding:16px 20px;text-align:left;font-size:14px;
  border-bottom:1px solid rgba(122,168,255,.1);
}
table.compare thead th{
  background:rgba(63,169,255,.08);font-size:13.5px;font-weight:700;color:#dce9ff;
  letter-spacing:.4px;
}
table.compare thead th.hl{color:#8fd0ff;}
table.compare tbody th{
  font-weight:600;color:#c5d6f2;font-size:13.5px;background:rgba(255,255,255,.02);
  width:22%;
}
table.compare td{color:var(--dim);}
table.compare td.good{color:#a8ffe0;font-weight:600;background:rgba(63,255,196,.05);}
table.compare tbody tr:last-child th,table.compare tbody tr:last-child td{border-bottom:0;}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:step;}
.step{
  position:relative;padding:30px 24px 26px;border-radius:var(--radius);
  border:1px solid var(--stroke);background:var(--panel);transition:var(--t);
}
.step:hover{transform:translateY(-4px);border-color:var(--stroke-hi);box-shadow:0 22px 44px -28px rgba(63,169,255,.55);}
.step-no{
  display:inline-block;font-size:13px;font-weight:800;letter-spacing:2px;
  color:#04101f;background:linear-gradient(135deg,#48b0ff,#7c5cff);
  padding:4px 12px;border-radius:999px;margin-bottom:16px;
}
.step h3{font-size:16px;font-weight:700;margin-bottom:10px;}
.step p{font-size:14px;color:var(--dim);line-height:1.78;}

/* ---------- category wall ---------- */
.cat-card{
  display:block;padding:28px 26px;border-radius:var(--radius);
  border:1px solid var(--stroke);
  background:linear-gradient(150deg,rgba(63,169,255,.1),rgba(124,92,255,.06));
  transition:var(--t);height:100%;
}
.cat-card:hover{
  transform:translateY(-4px);border-color:var(--stroke-hi);
  box-shadow:0 24px 46px -26px rgba(63,169,255,.6);
  background:linear-gradient(150deg,rgba(63,169,255,.18),rgba(124,92,255,.1));
}
.cat-card h3{font-size:17px;font-weight:700;margin-bottom:10px;}
.cat-card p{font-size:13.8px;color:var(--dim);line-height:1.78;margin-bottom:16px;}
.cat-more{font-size:13px;font-weight:600;color:#8fd0ff;display:inline-flex;align-items:center;gap:6px;}
.cat-card:hover .cat-more{color:#fff;}

/* ---------- gallery ---------- */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.gallery-item{
  position:relative;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--stroke);aspect-ratio:4/3;transition:var(--t);
}
.gallery-item img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.gallery-item:hover{border-color:var(--stroke-hi);transform:translateY(-3px);box-shadow:0 20px 40px -26px rgba(63,169,255,.6);}
.gallery-item:hover img{transform:scale(1.07);}
.gallery-cap{
  position:absolute;left:0;right:0;bottom:0;padding:16px 16px 14px;
  background:linear-gradient(180deg,transparent,rgba(4,8,18,.94));
}
.gallery-cap strong{display:block;font-size:14px;font-weight:700;}
.gallery-cap span{font-size:12px;color:var(--dim);}

/* ---------- quotes ---------- */
.quote{padding:26px 24px;border-radius:var(--radius);border:1px solid var(--stroke);background:var(--panel);transition:var(--t);height:100%;}
.quote:hover{transform:translateY(-4px);border-color:var(--stroke-hi);box-shadow:0 22px 44px -28px rgba(63,169,255,.5);}
.quote p{font-size:14.2px;color:#cfdcf3;line-height:1.82;margin-bottom:18px;}
.quote-who{display:flex;align-items:center;gap:12px;}
.avatar{
  width:38px;height:38px;border-radius:50%;flex-shrink:0;
  display:grid;place-items:center;font-size:14px;font-weight:700;color:#04101f;
  background:linear-gradient(135deg,#66c2ff,#8f7bff);
}
.quote-who b{display:block;font-size:13.5px;font-weight:700;}
.quote-who span{font-size:12px;color:var(--mute);}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.news-card{
  display:flex;flex-direction:column;gap:10px;height:100%;
  padding:24px;border-radius:var(--radius);
  border:1px solid var(--stroke);background:var(--panel);transition:var(--t);
}
.news-card:hover{
  transform:translateY(-4px);border-color:var(--stroke-hi);
  background:var(--panel-hover);box-shadow:0 22px 44px -28px rgba(63,169,255,.6);
}
.news-meta{display:flex;flex-wrap:wrap;gap:10px;font-size:12px;color:var(--mute);}
.news-meta em{font-style:normal;color:#8fd0ff;}
.news-card h3{font-size:15.5px;font-weight:700;line-height:1.55;}
.news-card p{
  font-size:13.8px;color:var(--dim);line-height:1.78;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.empty-note{
  grid-column:1/-1;padding:48px 24px;text-align:center;color:var(--mute);
  border:1px dashed rgba(122,168,255,.2);border-radius:var(--radius);font-size:14px;
}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:14px;max-width:900px;}
.faq-item{
  border:1px solid var(--stroke);border-radius:var(--radius);
  background:var(--panel);overflow:hidden;transition:var(--t);
}
.faq-item:hover{border-color:var(--stroke-hi);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;
  padding:20px 22px;background:transparent;border:0;cursor:pointer;
  text-align:left;font-size:15.5px;font-weight:600;color:var(--text);
  transition:var(--t);min-height:52px;
}
.faq-q:hover{color:#9ed0ff;}
.faq-q i{
  margin-left:auto;width:24px;height:24px;flex-shrink:0;border-radius:50%;
  border:1px solid var(--stroke-hi);display:grid;place-items:center;
  font-style:normal;font-size:14px;color:#8fd0ff;transition:var(--t);
}
.faq-item.open .faq-q i{transform:rotate(45deg);background:rgba(63,169,255,.2);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{padding:0 22px 20px;font-size:14px;color:var(--dim);line-height:1.85;}
.faq-item.open .faq-a{max-height:320px;}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;
  padding:64px 0;text-align:center;
  background:
    radial-gradient(700px 320px at 50% 0%,rgba(63,169,255,.24),transparent 70%),
    radial-gradient(600px 300px at 80% 100%,rgba(124,92,255,.2),transparent 72%),
    var(--bg-deep);
  border-top:1px solid var(--stroke);
}
.cta-band h2{font-size:28px;font-weight:700;margin-bottom:16px;letter-spacing:.3px;}
.cta-band p{font-size:14.5px;color:var(--dim);max-width:640px;margin:0 auto 28px;line-height:1.85;}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;}

/* ---------- footer ---------- */
.site-footer{
  padding:56px 0 28px;background:#03060d;
  border-top:1px solid rgba(122,168,255,.12);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:44px;
  padding-bottom:38px;border-bottom:1px solid rgba(122,168,255,.1);
}
.footer-brand p{margin-top:16px;font-size:13.5px;color:var(--mute);line-height:1.85;max-width:380px;}
.footer-col h3{font-size:14px;font-weight:700;margin-bottom:16px;color:#cfe0f8;letter-spacing:.4px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:13.5px;color:var(--mute);transition:var(--t);}
.footer-col a:hover{color:#8fd0ff;}
.footer-bottom{
  padding-top:24px;display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;align-items:center;
  font-size:12.5px;color:#4d5b78;
}
.footer-bottom .dot{color:#2b3550;}

/* ---------- responsive ---------- */
@media(max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .stats{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .gallery{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:1fr;}
  .hero h1{font-size:34px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .footer-brand{grid-column:1/-1;}
}
@media(max-width:900px){
  .nav-toggle{display:flex;}
  .nav-cta{display:none;}
  .main-nav{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    margin-left:0;padding:12px;border-radius:20px;
    border:1px solid var(--stroke);
    background:rgba(7,11,22,.97);
    backdrop-filter:blur(20px);
    box-shadow:0 26px 50px -24px rgba(0,0,0,.95);
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:var(--t);
  }
  .site-header.nav-open .main-nav{opacity:1;visibility:visible;transform:none;}
  .nav-link{padding:13px 16px;font-size:14.5px;border-radius:12px;}
  .header-inner{gap:10px;}
}
@media(max-width:768px){
  .section{padding:54px 0;}
  .hero{padding:52px 0 58px;}
  .hero h1{font-size:28px;line-height:1.38;}
  .hero-lead{font-size:14.5px;}
  .section-head h2{font-size:23px;}
  .grid-2,.grid-3,.grid-4,.news-grid,.gallery{grid-template-columns:1fr;}
  .hero-points{gap:24px;}
  .hero-point b{font-size:21px;}
  .hero-search{flex-direction:column;border-radius:20px;padding:10px;}
  .hero-search input{padding:0 14px;text-align:center;}
  .hero-search .btn{width:100%;}
  .cta-band h2{font-size:23px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
}
@media(max-width:520px){
  .container{padding:0 16px;}
  .site-header{padding:10px 12px 0;}
  .header-inner{height:58px;padding:0 10px 0 14px;}
  .logo-text{font-size:13.5px;}
  .logo-mark{width:26px;height:26px;border-radius:8px;font-size:12px;}
  .hero h1{font-size:24px;}
  .hero-badge{font-size:12px;padding:6px 13px;}
  .card{padding:22px 20px;}
  .stat{padding:24px 16px;}
  .stat-num{font-size:26px;}
  .faq-q{padding:16px 18px;font-size:14.5px;}
  .faq-a p{padding:0 18px 18px;}
  .btn{padding:11px 18px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category1 */
:root{
 --bg:#05080f;
 --bg-soft:#080d1a;
 --bg-deep:#040711;
 --panel:rgba(255,255,255,.045);
 --panel-hover:rgba(255,255,255,.078);
 --stroke:rgba(122,168,255,.16);
 --stroke-hi:rgba(122,190,255,.44);
 --text:#e9eefb;
 --dim:#9dabc9;
 --mute:#6b7a99;
 --accent:#3fa9ff;
 --accent-deep:#1b7ee0;
 --violet:#7c5cff;
 --radius:16px;
 --radius-sm:10px;
 --shadow:0 24px 48px -28px rgba(0,0,0,.96);
 --container:1180px;
 --t:.22s ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
 margin:0;
 font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
 background:var(--bg);
 color:var(--text);
 line-height:1.75;
 font-size:15px;
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:100;padding:14px 16px 0;}
.header-inner{
 position:relative;
 max-width:var(--container);
 margin:0 auto;
 height:64px;
 display:flex;
 align-items:center;
 gap:18px;
 padding:0 12px 0 18px;
 border-radius:999px;
 border:1px solid var(--stroke);
 background:rgba(8,13,26,.72);
 backdrop-filter:blur(18px) saturate(150%);
 -webkit-backdrop-filter:blur(18px) saturate(150%);
 transition:var(--t);
}
.site-header.is-scrolled .header-inner{
 box-shadow:0 18px 36px -22px rgba(0,0,0,.95),0 0 0 1px rgba(63,169,255,.14);
 background:rgba(7,11,22,.9);
}
.logo{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;flex-shrink:0;}
.logo-mark{
 width:30px;height:30px;border-radius:9px;
 background:linear-gradient(135deg,var(--accent),var(--violet));
 box-shadow:0 0 18px rgba(63,169,255,.55);
 display:grid;place-items:center;
 font-size:13px;font-weight:800;color:#04101f;letter-spacing:-1px;
}
.logo-text{font-size:15px;font-weight:700;letter-spacing:.4px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
 padding:8px 14px;border-radius:999px;font-size:14px;color:var(--dim);
 transition:var(--t);white-space:nowrap;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.07);}
.nav-link.is-active{
 color:#fff;background:rgba(63,169,255,.16);
 box-shadow:inset 0 0 0 1px rgba(63,169,255,.36);
}
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:11px 22px;border-radius:10px;font-size:14px;font-weight:600;
 border:1px solid transparent;cursor:pointer;transition:var(--t);
 min-height:42px;
}
.btn-primary{
 background:linear-gradient(135deg,#48b0ff,#5c7dff);
 color:#04101f;
 box-shadow:0 0 22px rgba(63,169,255,.42);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 32px rgba(63,169,255,.72);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
 border-color:var(--stroke-hi);color:#cfe2ff;background:rgba(255,255,255,.03);
}
.btn-ghost:hover{background:rgba(63,169,255,.12);border-color:var(--accent);transform:translateY(-2px);}
.nav-cta{padding:9px 18px;font-size:13px;min-height:38px;flex-shrink:0;}
.nav-toggle{
 display:none;width:42px;height:42px;border-radius:12px;
 border:1px solid var(--stroke);background:rgba(255,255,255,.05);
 cursor:pointer;align-items:center;justify-content:center;flex-shrink:0;
}
.nav-toggle span{display:block;width:16px;height:1.6px;background:#cfe2ff;border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
 content:"";position:absolute;left:0;width:16px;height:1.6px;background:#cfe2ff;border-radius:2px;
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}

/* ---------- hero ---------- */
.cat-hero{
 position:relative;overflow:hidden;
 padding:64px 0 76px;
 background:
 radial-gradient(900px 420px at 20% -10%,rgba(63,169,255,.22),transparent 65%),
 radial-gradient(760px 420px at 92% 14%,rgba(124,92,255,.20),transparent 72%),
 var(--bg-deep);
 border-bottom:1px solid var(--stroke);
}
.hero-bg{position:absolute;inset:0;z-index:0;pointer-events:none;}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.18;}
.hero-bg::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(180deg,rgba(4,7,17,.6),rgba(4,7,17,.95));
}
.hero-grid{
 position:relative;z-index:1;
 display:grid;grid-template-columns:1.08fr .92fr;
 gap:46px;align-items:center;
}
.hero-crumb{
 display:inline-flex;align-items:center;gap:8px;
 font-size:12.5px;color:var(--mute);margin-bottom:18px;
}
.hero-crumb a{color:var(--dim);}
.hero-crumb a:hover{color:var(--accent);}
.hero-crumb i{font-style:normal;color:rgba(157,171,201,.5);}
.cat-hero h1{
 font-size:clamp(27px,3.6vw,40px);
 line-height:1.32;font-weight:800;letter-spacing:.4px;
 margin-bottom:18px;
 background:linear-gradient(180deg,#ffffff 28%,#9ecbff 100%);
 -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{
 font-size:15.5px;color:var(--dim);line-height:1.85;
 max-width:580px;margin-bottom:26px;
}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
.chip{
 padding:7px 15px;border-radius:999px;font-size:12.5px;color:#b7cbe8;
 border:1px solid var(--stroke);background:rgba(255,255,255,.035);
 transition:var(--t);
}
.chip:hover{color:#fff;border-color:var(--stroke-hi);background:rgba(63,169,255,.13);transform:translateY(-2px);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-panel{
 border-radius:var(--radius);
 border:1px solid var(--stroke);
 background:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.028));
 backdrop-filter:blur(16px);
 -webkit-backdrop-filter:blur(16px);
 box-shadow:var(--shadow);
 padding:26px 24px;
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;}
.panel-head h2{font-size:16px;font-weight:700;letter-spacing:.3px;}
.panel-head span{
 font-size:11.5px;color:#9ecbff;padding:4px 10px;border-radius:999px;
 border:1px solid rgba(63,169,255,.3);background:rgba(63,169,255,.1);
}
.check-list li{
 display:flex;align-items:flex-start;gap:12px;
 padding:12px 0;border-bottom:1px dashed rgba(122,168,255,.14);
 font-size:14px;color:var(--dim);
}
.check-list li:last-child{border-bottom:0;padding-bottom:0;}
.check-dot{
 flex-shrink:0;width:20px;height:20px;border-radius:50%;
 border:1px solid rgba(63,169,255,.5);background:rgba(63,169,255,.16);
 display:grid;place-items:center;margin-top:2px;
}
.check-dot::after{
 content:"";width:7px;height:4px;border-left:1.5px solid #9ecbff;
 border-bottom:1.5px solid #9ecbff;transform:rotate(-45deg) translateY(-1px);
}
.check-list strong{color:#e9eefb;font-weight:600;}
.panel-foot{
 margin-top:18px;padding-top:16px;border-top:1px solid rgba(122,168,255,.12);
 display:flex;justify-content:space-between;gap:12px;font-size:12.5px;color:var(--mute);
}
.panel-foot b{color:#9ecbff;font-size:15px;font-weight:700;}

/* ---------- section base ---------- */
.section{padding:74px 0;position:relative;}
.section-alt{background:var(--bg-soft);border-top:1px solid rgba(122,168,255,.08);border-bottom:1px solid rgba(122,168,255,.08);}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-tag{
 display:inline-flex;align-items:center;gap:8px;
 font-size:12.5px;color:#9ecbff;letter-spacing:.6px;
 padding:5px 13px;border-radius:999px;
 border:1px solid rgba(63,169,255,.28);background:rgba(63,169,255,.09);
 margin-bottom:16px;
}
.section-tag::before{
 content:"";width:14px;height:1.5px;border-radius:2px;
 background:linear-gradient(90deg,var(--accent),transparent);
}
.section-head h2{
 font-size:clamp(22px,2.6vw,29px);font-weight:800;line-height:1.4;
 letter-spacing:.3px;margin-bottom:14px;
}
.section-head p{color:var(--dim);font-size:14.6px;line-height:1.85;}
.grid{display:grid;gap:20px;}
.grid-4{grid-template-columns:repeat(4,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}

/* ---------- cards ---------- */
.info-card{
 border-radius:var(--radius);
 border:1px solid var(--stroke);
 background:var(--panel);
 padding:24px 22px;
 transition:var(--t);
 position:relative;
}
.info-card:hover{
 transform:translateY(-4px);
 background:var(--panel-hover);
 border-color:var(--stroke-hi);
 box-shadow:0 26px 44px -30px rgba(63,169,255,.62);
}
.card-num{
 width:34px;height:34px;border-radius:11px;
 display:grid;place-items:center;
 font-size:13px;font-weight:800;color:#9ecbff;
 border:1px solid rgba(63,169,255,.32);
 background:rgba(63,169,255,.12);
 margin-bottom:16px;
}
.info-card h3{font-size:16px;font-weight:700;margin-bottom:10px;letter-spacing:.2px;}
.info-card p{font-size:14px;color:var(--dim);line-height:1.8;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag{
 font-size:11.5px;color:#a9caff;padding:4px 10px;border-radius:999px;
 border:1px solid rgba(122,168,255,.22);background:rgba(122,168,255,.08);
}

/* ---------- split block ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center;}
.split-media{
 border-radius:var(--radius);overflow:hidden;
 border:1px solid var(--stroke);box-shadow:var(--shadow);
 position:relative;aspect-ratio:16/11;
}
.split-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.split-media:hover img{transform:scale(1.04);}
.split-media::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(180deg,rgba(4,7,17,.05),rgba(4,7,17,.55));
}
.std-list li{
 display:flex;gap:14px;align-items:flex-start;
 padding:16px 0;border-bottom:1px solid rgba(122,168,255,.1);
}
.std-list li:last-child{border-bottom:0;}
.std-idx{
 flex-shrink:0;width:26px;height:26px;border-radius:8px;
 display:grid;place-items:center;font-size:12px;font-weight:700;
 color:#04101f;background:linear-gradient(135deg,#48b0ff,#5c7dff);
 box-shadow:0 0 14px rgba(63,169,255,.4);
}
.std-list h3{font-size:15px;font-weight:700;margin-bottom:6px;}
.std-list p{font-size:13.8px;color:var(--dim);line-height:1.8;}

/* ---------- steps ---------- */
.step-row{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:step;}
.step-card{
 border-radius:var(--radius);
 border:1px solid var(--stroke);
 background:linear-gradient(170deg,rgba(255,255,255,.07),rgba(255,255,255,.025));
 padding:28px 24px 26px;
 position:relative;
 transition:var(--t);
}
.step-card:hover{
 transform:translateY(-4px);
 border-color:var(--stroke-hi);
 box-shadow:0 26px 46px -30px rgba(63,169,255,.6);
}
.step-card::before{
 counter-increment:step;content:"0" counter(step);
 position:absolute;top:20px;right:22px;
 font-size:34px;font-weight:800;line-height:1;
 color:rgba(122,168,255,.16);letter-spacing:-1px;
}
.step-card h3{font-size:16.5px;font-weight:700;margin-bottom:12px;letter-spacing:.2px;}
.step-card p{font-size:14px;color:var(--dim);line-height:1.82;}
.step-card .tag{margin-top:16px;display:inline-block;}

/* ---------- stat strip ---------- */
.stat-strip{
 display:grid;grid-template-columns:repeat(4,1fr);
 border-radius:var(--radius);
 border:1px solid var(--stroke);
 background:linear-gradient(120deg,rgba(63,169,255,.12),rgba(124,92,255,.1));
 overflow:hidden;
}
.stat-item{padding:26px 22px;text-align:center;border-right:1px solid rgba(122,168,255,.14);}
.stat-item:last-child{border-right:0;}
.stat-item b{
 display:block;font-size:28px;font-weight:800;letter-spacing:.5px;
 color:#fff;margin-bottom:6px;
 text-shadow:0 0 22px rgba(63,169,255,.5);
}
.stat-item span{font-size:12.8px;color:var(--dim);letter-spacing:.3px;}

/* ---------- scenes ---------- */
.scene-card{
 border-radius:var(--radius);
 border:1px solid var(--stroke);
 background:var(--panel);
 padding:24px 22px;
 transition:var(--t);
}
.scene-card:hover{
 transform:translateY(-4px);
 border-color:var(--stroke-hi);
 background:var(--panel-hover);
 box-shadow:0 24px 42px -30px rgba(63,169,255,.58);
}
.scene-top{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.scene-ico{
 width:38px;height:38px;border-radius:12px;flex-shrink:0;
 display:grid;place-items:center;
 border:1px solid rgba(63,169,255,.28);
 background:rgba(63,169,255,.12);
}
.scene-ico svg{width:18px;height:18px;stroke:#9ecbff;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.scene-card h3{font-size:15.5px;font-weight:700;}
.scene-card p{font-size:13.8px;color:var(--dim);line-height:1.8;}

/* ---------- quotes ---------- */
.quote-card{
 border-radius:var(--radius);
 border:1px solid var(--stroke);
 background:var(--panel);
 padding:26px 24px;
 transition:var(--t);
}
.quote-card:hover{transform:translateY(-3px);border-color:var(--stroke-hi);background:var(--panel-hover);}
.quote-card p{font-size:14.4px;color:#cfdcf2;line-height:1.9;margin-bottom:18px;}
.quote-meta{display:flex;align-items:center;gap:12px;}
.quote-avatar{
 width:34px;height:34px;border-radius:50%;
 background:linear-gradient(135deg,rgba(63,169,255,.55),rgba(124,92,255,.55));
 display:grid;place-items:center;font-size:13px;font-weight:700;color:#04101f;
}
.quote-meta b{display:block;font-size:13.5px;font-weight:600;}
.quote-meta span{font-size:12px;color:var(--mute);}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:14px;max-width:880px;margin:0 auto;}
.faq-item{
 border-radius:var(--radius-sm);
 border:1px solid var(--stroke);
 background:var(--panel);
 transition:var(--t);
 overflow:hidden;
}
.faq-item[open]{border-color:var(--stroke-hi);background:var(--panel-hover);}
.faq-item summary{
 list-style:none;cursor:pointer;
 padding:18px 22px;font-size:15px;font-weight:600;
 display:flex;align-items:center;justify-content:space-between;gap:16px;
 transition:var(--t);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:#9ecbff;}
.faq-item summary::after{
 content:"";width:9px;height:9px;flex-shrink:0;
 border-right:1.6px solid #9ecbff;border-bottom:1.6px solid #9ecbff;
 transform:rotate(45deg);transition:transform var(--t);
 margin-bottom:3px;
}
.faq-item[open] summary::after{transform:rotate(-135deg);margin-bottom:-3px;}
.faq-body{padding:0 22px 20px;font-size:14px;color:var(--dim);line-height:1.85;}

/* ---------- cta ---------- */
.cta-band{
 padding:0 0 82px;
}
.cta-box{
 position:relative;overflow:hidden;
 border-radius:22px;
 border:1px solid rgba(63,169,255,.32);
 background:
 radial-gradient(640px 300px at 12% 0%,rgba(63,169,255,.26),transparent 68%),
 radial-gradient(560px 300px at 88% 100%,rgba(124,92,255,.24),transparent 70%),
 rgba(10,16,30,.9);
 padding:52px 44px;
 text-align:center;
 box-shadow:0 34px 70px -40px rgba(63,169,255,.6);
}
.cta-box h2{font-size:clamp(22px,2.7vw,30px);font-weight:800;margin-bottom:14px;letter-spacing:.3px;}
.cta-box p{color:var(--dim);font-size:14.8px;max-width:620px;margin:0 auto 28px;line-height:1.85;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ---------- footer ---------- */
.site-footer{
 border-top:1px solid var(--stroke);
 background:var(--bg-deep);
 padding:56px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px;}
.footer-brand p{color:var(--dim);font-size:13.6px;line-height:1.85;margin-top:16px;max-width:380px;}
.footer-col h3{font-size:14px;font-weight:700;margin-bottom:16px;letter-spacing:.4px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:13.6px;color:var(--dim);transition:var(--t);}
.footer-col a:hover{color:var(--accent);padding-left:3px;}
.footer-bottom{
 margin-top:40px;padding-top:22px;
 border-top:1px solid rgba(122,168,255,.12);
 display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
 font-size:12.6px;color:var(--mute);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
 .hero-grid{grid-template-columns:1fr;gap:34px;}
 .grid-4{grid-template-columns:repeat(2,1fr);}
 .step-row{grid-template-columns:1fr;}
 .stat-strip{grid-template-columns:repeat(2,1fr);}
 .stat-item:nth-child(2){border-right:0;}
 .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid rgba(122,168,255,.14);}
 .split{grid-template-columns:1fr;gap:30px;}
 .footer-grid{grid-template-columns:1fr 1fr;}
 .footer-brand{grid-column:1/-1;}
}
@media (max-width:860px){
 .main-nav{
  position:absolute;top:calc(100% + 12px);left:0;right:0;
  flex-direction:column;align-items:stretch;gap:4px;
  padding:12px;border-radius:20px;display:none;
  background:rgba(8,13,26,.98);
  border:1px solid var(--stroke);
  box-shadow:0 26px 50px -24px rgba(0,0,0,.95);
 }
 .main-nav.is-open{display:flex;}
 .nav-link{padding:12px 16px;border-radius:12px;font-size:14.5px;min-height:44px;display:flex;align-items:center;}
 .nav-toggle{display:flex;margin-left:auto;}
 .nav-cta{display:none;}
 .logo-text{font-size:14px;}
 .grid-3{grid-template-columns:repeat(2,1fr);}
 .section{padding:58px 0;}
 .cat-hero{padding:44px 0 60px;}
 .cta-box{padding:40px 24px;}
}
@media (max-width:560px){
 .header-inner{height:58px;padding:0 10px 0 14px;gap:10px;}
 .grid-4,.grid-3,.grid-2{grid-template-columns:1fr;}
 .stat-strip{grid-template-columns:1fr;}
 .stat-item{border-right:0;border-bottom:1px solid rgba(122,168,255,.14);}
 .stat-item:last-child{border-bottom:0;}
 .hero-actions .btn,.cta-actions .btn{width:100%;}
 .footer-grid{grid-template-columns:1fr;}
 .footer-bottom{flex-direction:column;}
 .faq-item summary{font-size:14px;padding:16px 18px;}
 .faq-body{padding:0 18px 18px;font-size:13.6px;}
 .section{padding:48px 0;}
 .info-card,.scene-card,.quote-card{padding:20px 18px;}
}

/* roulang page: article */
:root{
 --bg:#05080f;
 --bg-soft:#080d1a;
 --bg-deep:#040711;
 --panel:rgba(255,255,255,.045);
 --panel-hover:rgba(255,255,255,.078);
 --stroke:rgba(122,168,255,.16);
 --stroke-hi:rgba(122,190,255,.44);
 --text:#e9eefb;
 --dim:#9dabc9;
 --mute:#6b7a99;
 --accent:#3fa9ff;
 --accent-deep:#1b7ee0;
 --violet:#7c5cff;
 --radius:16px;
 --radius-sm:10px;
 --shadow:0 24px 48px -28px rgba(0,0,0,.96);
 --container:1180px;
 --t:.22s ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
 margin:0;
 font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
 background:
 radial-gradient(1100px 520px at 12% -8%,rgba(63,169,255,.14),transparent 62%),
 radial-gradient(900px 520px at 92% 6%,rgba(124,92,255,.13),transparent 66%),
 var(--bg);
 color:var(--text);
 line-height:1.78;
 font-size:15px;
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:.3px;}
p{margin:0;}
ul,ol{margin:0;padding:0;}
::selection{background:rgba(63,169,255,.36);color:#fff;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:100;padding:14px 16px 0;}
.header-inner{
 position:relative;
 max-width:var(--container);
 margin:0 auto;
 height:64px;
 display:flex;
 align-items:center;
 gap:18px;
 padding:0 12px 0 18px;
 border-radius:999px;
 border:1px solid var(--stroke);
 background:rgba(8,13,26,.72);
 backdrop-filter:blur(18px) saturate(150%);
 -webkit-backdrop-filter:blur(18px) saturate(150%);
 transition:var(--t);
}
.site-header.is-scrolled .header-inner{
 box-shadow:0 18px 36px -22px rgba(0,0,0,.95),0 0 0 1px rgba(63,169,255,.14);
 background:rgba(7,11,22,.92);
}
.logo{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;flex-shrink:0;}
.logo-mark{
 width:30px;height:30px;border-radius:9px;
 background:linear-gradient(135deg,var(--accent),var(--violet));
 box-shadow:0 0 18px rgba(63,169,255,.55);
 display:grid;place-items:center;
 font-size:13px;font-weight:800;color:#04101f;letter-spacing:-1px;
}
.logo-text{font-size:15px;font-weight:700;letter-spacing:.4px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
 padding:8px 14px;border-radius:999px;font-size:14px;color:var(--dim);
 transition:var(--t);white-space:nowrap;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.07);}
.nav-link.is-active{
 color:#fff;background:rgba(63,169,255,.16);
 box-shadow:inset 0 0 0 1px rgba(63,169,255,.36);
}
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:11px 22px;border-radius:10px;font-size:14px;font-weight:600;
 border:1px solid transparent;cursor:pointer;transition:var(--t);
 min-height:44px;text-align:center;
}
.btn-primary{
 background:linear-gradient(135deg,#48b0ff,#5c7dff);
 color:#04101f;
 box-shadow:0 0 22px rgba(63,169,255,.42);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 32px rgba(63,169,255,.72);color:#04101f;}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
 border-color:var(--stroke-hi);color:#cfe2ff;background:rgba(255,255,255,.03);
}
.btn-ghost:hover{background:rgba(63,169,255,.12);border-color:var(--accent);transform:translateY(-2px);color:#fff;}
.nav-cta{padding:9px 18px;font-size:13px;min-height:40px;flex-shrink:0;}
.nav-toggle{
 display:none;width:42px;height:42px;border-radius:12px;
 border:1px solid var(--stroke);background:rgba(255,255,255,.05);
 cursor:pointer;align-items:center;justify-content:center;flex-shrink:0;
 transition:var(--t);
}
.nav-toggle:hover{background:rgba(63,169,255,.14);}
.nav-toggle span{display:block;width:16px;height:1.6px;background:#cfe2ff;border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
 content:"";position:absolute;left:0;width:16px;height:1.6px;background:#cfe2ff;border-radius:2px;
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}
/* ---------- article hero ---------- */
.article-hero{
 position:relative;overflow:hidden;
 padding:44px 0 52px;
 background:
 radial-gradient(900px 420px at 50% -12%,rgba(63,169,255,.22),transparent 66%),
 radial-gradient(720px 400px at 88% 12%,rgba(124,92,255,.2),transparent 72%),
 var(--bg-deep);
 border-bottom:1px solid var(--stroke);
}
.hero-bg{position:absolute;inset:0;z-index:0;pointer-events:none;}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.18;}
.hero-bg::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(180deg,rgba(4,7,17,.6),rgba(4,7,17,.95));
}
.article-hero .container{position:relative;z-index:1;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--mute);}
.breadcrumb a{color:var(--dim);transition:var(--t);}
.breadcrumb a:hover{color:#8fc9ff;}
.breadcrumb i{font-style:normal;color:rgba(157,171,201,.5);}
.article-hero h1{
 font-size:36px;line-height:1.34;
 margin:16px 0 18px;
 max-width:900px;
 overflow-wrap:break-word;word-break:break-word;
 background:linear-gradient(180deg,#ffffff 32%,#9ecbff 100%);
 -webkit-background-clip:text;background-clip:text;color:transparent;
}
.article-hero .hero-lead{
 font-size:15.5px;color:var(--dim);line-height:1.9;
 max-width:780px;margin:0 0 22px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;font-size:13px;color:var(--mute);}
.badge{
 display:inline-flex;align-items:center;gap:7px;
 padding:6px 14px;border-radius:999px;font-size:12.5px;color:#a9caff;
 border:1px solid rgba(63,169,255,.34);background:rgba(63,169,255,.1);
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent);}
.meta-row .sep{width:1px;height:12px;background:rgba(122,168,255,.24);display:inline-block;}
.lead-strip{
 display:grid;grid-template-columns:repeat(3,1fr);gap:0;
 margin-top:30px;
 border-radius:var(--radius);
 border:1px solid var(--stroke);
 background:rgba(255,255,255,.045);
 backdrop-filter:blur(14px);
 -webkit-backdrop-filter:blur(14px);
 box-shadow:var(--shadow);
 overflow:hidden;
}
.lead-strip .strip-item{padding:20px 22px;border-right:1px solid rgba(122,168,255,.12);}
.lead-strip .strip-item:last-child{border-right:0;}
.strip-item b{display:flex;align-items:center;gap:8px;font-size:14px;color:#fff;margin-bottom:6px;}
.strip-item b::before{
 content:"";width:7px;height:7px;border-radius:2px;
 background:linear-gradient(135deg,var(--accent),var(--violet));
 box-shadow:0 0 10px rgba(63,169,255,.7);
}
.strip-item span{font-size:13.5px;color:var(--dim);line-height:1.7;display:block;}
/* ---------- sections ---------- */
.section{padding:64px 0;position:relative;}
.section-alt{
 background:linear-gradient(180deg,rgba(8,13,26,.92),rgba(6,10,20,.92));
 border-top:1px solid rgba(122,168,255,.12);
 border-bottom:1px solid rgba(122,168,255,.12);
}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;
 font-size:12.5px;letter-spacing:1.6px;color:#7fb7ff;text-transform:uppercase;
 margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--accent),var(--violet));}
.section-title{font-size:27px;line-height:1.42;color:#fff;}
.section-desc{margin-top:12px;color:var(--dim);font-size:14.5px;line-height:1.85;}
/* ---------- article body ---------- */
.article-shell{max-width:900px;margin:0 auto;}
.article-card{
 border-radius:var(--radius);
 border:1px solid var(--stroke);
 background:rgba(255,255,255,.04);
 backdrop-filter:blur(14px);
 -webkit-backdrop-filter:blur(14px);
 box-shadow:var(--shadow);
 padding:32px 34px;
}
.prose{font-size:15.5px;line-height:1.9;color:#cfd9ec;}
.prose > *:first-child{margin-top:0;}
.prose h2{
 font-size:23px;line-height:1.5;color:#fff;
 margin:38px 0 14px;padding-left:14px;
 border-left:3px solid var(--accent);
}
.prose h3{font-size:18px;color:#eaf2ff;margin:28px 0 12px;}
.prose h4{font-size:16px;color:#eaf2ff;margin:22px 0 10px;}
.prose p{margin:0 0 16px;}
.prose a{color:#7cc4ff;border-bottom:1px dashed rgba(124,196,255,.5);transition:var(--t);}
.prose a:hover{color:#b6dcff;border-bottom-color:#b6dcff;}
.prose strong{color:#ffffff;font-weight:700;}
.prose em{color:#a9caff;font-style:normal;}
.prose ul,.prose ol{padding-left:22px;margin:0 0 18px;}
.prose li{margin:8px 0;}
.prose img{border-radius:12px;border:1px solid var(--stroke);margin:20px 0;}
.prose blockquote{
 margin:22px 0;padding:16px 20px;border-radius:12px;
 background:rgba(63,169,255,.08);
 border:1px solid rgba(63,169,255,.24);
 border-left:3px solid var(--accent);
 color:#c6dcf8;
}
.prose blockquote p:last-child{margin-bottom:0;}
.prose table{width:100%;border-collapse:collapse;margin:22px 0;font-size:14px;}
.prose th,.prose td{
 padding:11px 12px;border-bottom:1px solid rgba(122,168,255,.14);text-align:left;vertical-align:top;
}
.prose th{color:#fff;background:rgba(63,169,255,.1);font-weight:700;}
.prose code{
 background:rgba(63,169,255,.14);padding:2px 6px;border-radius:6px;font-size:13.5px;color:#bfe0ff;
}
.prose hr{border:0;height:1px;background:rgba(122,168,255,.16);margin:30px 0;}
.empty-state{text-align:center;padding:26px 0 10px;}
.empty-state h2{font-size:22px;color:#fff;margin-bottom:12px;}
.empty-state p{color:var(--dim);margin-bottom:22px;}
/* ---------- cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.card{
 position:relative;
 border-radius:var(--radius);
 border:1px solid var(--stroke);
 background:rgba(255,255,255,.04);
 padding:24px 22px;
 transition:transform var(--t),box-shadow var(--t),border-color var(--t),background var(--t);
 box-shadow:0 16px 34px -30px rgba(0,0,0,.95);
}
.card:hover{
 transform:translateY(-4px);
 border-color:var(--stroke-hi);
 background:var(--panel-hover);
 box-shadow:0 28px 46px -28px rgba(0,0,0,.9),0 0 0 1px rgba(63,169,255,.18);
}
.card-icon{
 width:40px;height:40px;border-radius:12px;
 display:grid;place-items:center;margin-bottom:16px;
 background:linear-gradient(135deg,rgba(63,169,255,.28),rgba(124,92,255,.26));
 border:1px solid rgba(122,190,255,.3);
 color:#cfe6ff;
}
.card-icon svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.card h3{font-size:17px;color:#fff;margin-bottom:10px;line-height:1.5;}
.card p{font-size:14px;color:var(--dim);line-height:1.8;}
.card .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag{
 font-size:12px;color:#a9caff;padding:4px 10px;border-radius:999px;
 border:1px solid rgba(122,168,255,.24);background:rgba(63,169,255,.08);
}
/* ---------- steps ---------- */
.step-list{display:grid;gap:16px;}
.step{
 display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:start;
 padding:22px 24px;border-radius:var(--radius);
 border:1px solid var(--stroke);
 background:rgba(255,255,255,.04);
 transition:var(--t);
}
.step:hover{border-color:var(--stroke-hi);background:var(--panel-hover);transform:translateY(-3px);}
.step-num{
 width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
 font-size:16px;font-weight:800;color:#04101f;
 background:linear-gradient(135deg,#6cc4ff,#7c5cff);
 box-shadow:0 0 20px rgba(63,169,255,.45);
}
.step h3{font-size:17px;color:#fff;margin-bottom:8px;}
.step p{font-size:14px;color:var(--dim);line-height:1.8;}
/* ---------- stats ---------- */
.stats{
 display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
 padding:26px;border-radius:var(--radius);
 border:1px solid var(--stroke);
 background:
 radial-gradient(600px 240px at 10% 0%,rgba(63,169,255,.16),transparent 68%),
 rgba(255,255,255,.04);
 backdrop-filter:blur(14px);
 -webkit-backdrop-filter:blur(14px);
 box-shadow:var(--shadow);
}
.stat{text-align:center;padding:8px 6px;border-right:1px solid rgba(122,168,255,.12);}
.stat:last-child{border-right:0;}
.stat b{
 display:block;font-size:27px;font-weight:800;color:#fff;letter-spacing:.5px;
 text-shadow:0 0 22px rgba(63,169,255,.45);
}
.stat span{display:block;margin-top:6px;font-size:12.5px;color:var(--mute);line-height:1.6;}
/* ---------- quotes ---------- */
.quote{
 border-radius:var(--radius);
 border:1px solid var(--stroke);
 background:rgba(255,255,255,.04);
 padding:24px 22px;
 transition:var(--t);
}
.quote:hover{transform:translateY(-4px);border-color:var(--stroke-hi);background:var(--panel-hover);}
.quote p{font-size:14px;color:#cfd9ec;line-height:1.85;}
.quote .who{
 display:flex;align-items:center;gap:10px;margin-top:18px;
 font-size:13px;color:var(--mute);
}
.quote .avatar{
 width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
 font-size:13px;font-weight:700;color:#04101f;
 background:linear-gradient(135deg,#6cc4ff,#7c5cff);
}
/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto;}
.faq-item{
 border-radius:var(--radius-sm);
 border:1px solid var(--stroke);
 background:rgba(255,255,255,.04);
 padding:0 20px;
 transition:var(--t);
}
.faq-item[open]{border-color:var(--stroke-hi);background:rgba(63,169,255,.08);}
.faq-item summary{
 display:flex;align-items:center;justify-content:space-between;gap:14px;
 padding:18px 0;cursor:pointer;list-style:none;
 font-size:15px;font-weight:600;color:#eaf2ff;min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
 content:"+";font-size:19px;line-height:1;color:#7cc4ff;font-weight:400;
 transition:transform var(--t);
}
.faq-item[open] summary::after{content:"–";}
.faq-item .faq-body{padding:0 0 18px;color:var(--dim);font-size:14px;line-height:1.85;}
/* ---------- cta ---------- */
.cta-band{
 position:relative;overflow:hidden;
 border-radius:20px;
 border:1px solid rgba(122,190,255,.28);
 padding:40px 36px;
 background:
 radial-gradient(620px 260px at 12% 0%,rgba(63,169,255,.26),transparent 68%),
 radial-gradient(520px 260px at 92% 100%,rgba(124,92,255,.22),transparent 70%),
 rgba(8,13,26,.9);
 box-shadow:0 30px 60px -34px rgba(0,0,0,.98);
 display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:25px;color:#fff;line-height:1.45;margin-bottom:10px;}
.cta-band p{color:var(--dim);font-size:14.5px;line-height:1.85;max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
/* ---------- footer ---------- */
.site-footer{
 border-top:1px solid var(--stroke);
 background:var(--bg-deep);
 padding:56px 0 26px;
 margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:36px;}
.footer-brand p{color:var(--dim);font-size:14px;line-height:1.85;max-width:360px;margin-top:16px;}
.footer-col h3{font-size:14px;letter-spacing:.6px;color:#fff;margin-bottom:14px;}
.footer-col ul{list-style:none;display:grid;gap:10px;}
.footer-col a{color:var(--dim);font-size:14px;transition:var(--t);}
.footer-col a:hover{color:#8fc9ff;}
.footer-bottom{
 margin-top:36px;padding-top:20px;
 border-top:1px solid rgba(122,168,255,.12);
 display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
 color:var(--mute);font-size:13px;
}
.footer-bottom p{margin:0;}
/* ---------- responsive ---------- */
@media (max-width:1024px){
 .hero-wrap{padding-bottom:0;}
 .article-hero h1{font-size:31px;}
 .lead-strip{grid-template-columns:1fr;}
 .lead-strip .strip-item{border-right:0;border-bottom:1px solid rgba(122,168,255,.12);}
 .lead-strip .strip-item:last-child{border-bottom:0;}
 .grid-3{grid-template-columns:repeat(2,1fr);}
 .stats{grid-template-columns:repeat(2,1fr);}
 .stat:nth-child(2){border-right:0;}
 .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid rgba(122,168,255,.12);padding-bottom:18px;}
 .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
 .footer-brand{grid-column:1 / -1;}
}
@media (max-width:900px){
 .site-header{padding:12px 12px 0;}
 .header-inner{height:60px;padding:0 10px 0 14px;gap:10px;}
 .main-nav{
  position:absolute;top:calc(100% + 10px);left:0;right:0;
  flex-direction:column;align-items:stretch;gap:4px;
  padding:10px;border-radius:18px;
  border:1px solid var(--stroke);
  background:rgba(7,11,22,.98);
  box-shadow:0 26px 48px -22px rgba(0,0,0,.95);
  display:none;margin-left:0;
 }
 .main-nav.is-open{display:flex;}
 .nav-link{padding:12px 14px;border-radius:12px;font-size:15px;min-height:44px;display:flex;align-items:center;}
 .nav-toggle{display:flex;margin-left:auto;}
 .nav-cta{min-height:38px;padding:8px 14px;font-size:12.5px;}
}
@media (max-width:768px){
 .section{padding:52px 0;}
 .article-hero{padding:34px 0 42px;}
 .article-hero h1{font-size:26px;}
 .article-hero .hero-lead{font-size:14.5px;}
 .article-card{padding:24px 20px;}
 .prose{font-size:15px;}
 .prose h2{font-size:20px;}
 .grid-3,.grid-2{grid-template-columns:1fr;}
 .section-title{font-size:23px;}
 .cta-band{padding:30px 22px;}
 .cta-band h2{font-size:21px;}
 .stats{grid-template-columns:1fr;padding:20px;}
 .stat{border-right:0;border-bottom:1px solid rgba(122,168,255,.12);padding-bottom:16px;}
 .stat:last-child{border-bottom:0;padding-bottom:0;}
 .step{grid-template-columns:1fr;gap:12px;padding:20px;}
 .footer-grid{grid-template-columns:1fr;gap:26px;}
 .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
 .nav-cta{display:none;}
 .article-hero h1{font-size:23px;}
 .breadcrumb{font-size:12px;}
 .btn{width:100%;}
 .cta-actions{width:100%;}
 .meta-row{font-size:12px;}
 .lead-strip .strip-item{padding:16px 18px;}
}
@media (prefers-reduced-motion:reduce){
 *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category3 */
:root{
 --bg:#05080f;
 --bg-soft:#080d1a;
 --bg-deep:#040711;
 --panel:rgba(255,255,255,.045);
 --panel-hover:rgba(255,255,255,.078);
 --stroke:rgba(122,168,255,.16);
 --stroke-hi:rgba(122,190,255,.44);
 --text:#e9eefb;
 --dim:#9dabc9;
 --mute:#6b7a99;
 --accent:#3fa9ff;
 --accent-deep:#1b7ee0;
 --violet:#7c5cff;
 --radius:16px;
 --radius-sm:10px;
 --shadow:0 24px 48px -28px rgba(0,0,0,.96);
 --container:1180px;
 --t:.22s ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
 margin:0;
 font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
 background:var(--bg);
 color:var(--text);
 line-height:1.75;
 font-size:15px;
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;padding:0;}
ul,ol{list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:100;padding:14px 16px 0;}
.header-inner{
 position:relative;max-width:var(--container);margin:0 auto;height:64px;
 display:flex;align-items:center;gap:18px;padding:0 12px 0 18px;
 border-radius:999px;border:1px solid var(--stroke);
 background:rgba(8,13,26,.72);
 backdrop-filter:blur(18px) saturate(150%);
 -webkit-backdrop-filter:blur(18px) saturate(150%);
 transition:var(--t);
}
.site-header.is-scrolled .header-inner{
 box-shadow:0 18px 36px -22px rgba(0,0,0,.95),0 0 0 1px rgba(63,169,255,.14);
 background:rgba(7,11,22,.9);
}
.logo{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;flex-shrink:0;}
.logo-mark{
 width:30px;height:30px;border-radius:9px;
 background:linear-gradient(135deg,var(--accent),var(--violet));
 box-shadow:0 0 18px rgba(63,169,255,.55);
 display:grid;place-items:center;
 font-size:13px;font-weight:800;color:#04101f;letter-spacing:-1px;
}
.logo-text{font-size:15px;font-weight:700;letter-spacing:.4px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
 padding:8px 14px;border-radius:999px;font-size:14px;color:var(--dim);
 transition:var(--t);white-space:nowrap;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.07);}
.nav-link.is-active{
 color:#fff;background:rgba(63,169,255,.16);
 box-shadow:inset 0 0 0 1px rgba(63,169,255,.36);
}
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:11px 22px;border-radius:10px;font-size:14px;font-weight:600;
 border:1px solid transparent;cursor:pointer;transition:var(--t);min-height:42px;
 text-align:center;
}
.btn-primary{
 background:linear-gradient(135deg,#48b0ff,#5c7dff);
 color:#04101f;
 box-shadow:0 0 22px rgba(63,169,255,.42);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 32px rgba(63,169,255,.72);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{border-color:var(--stroke-hi);color:#cfe2ff;background:rgba(255,255,255,.03);}
.btn-ghost:hover{background:rgba(63,169,255,.12);border-color:var(--accent);transform:translateY(-2px);}
.nav-cta{padding:9px 18px;font-size:13px;min-height:38px;flex-shrink:0;}
.nav-toggle{
 display:none;width:42px;height:42px;border-radius:12px;
 border:1px solid var(--stroke);background:rgba(255,255,255,.05);
 cursor:pointer;align-items:center;justify-content:center;flex-shrink:0;
}
.nav-toggle span{display:block;width:16px;height:1.6px;background:#cfe2ff;border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
 content:"";position:absolute;left:0;width:16px;height:1.6px;background:#cfe2ff;border-radius:2px;
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}
/* ---------- page hero (inner) ---------- */
.page-hero{
 position:relative;overflow:hidden;padding:56px 0 60px;
 background:
 radial-gradient(820px 380px at 22% -8%,rgba(63,169,255,.22),transparent 66%),
 radial-gradient(680px 360px at 88% 22%,rgba(124,92,255,.20),transparent 72%),
 var(--bg-deep);
 border-bottom:1px solid var(--stroke);
}
.page-hero-bg{position:absolute;inset:0;z-index:0;pointer-events:none;}
.page-hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.17;}
.page-hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,7,17,.6),rgba(4,7,17,.95));}
.page-hero .container{position:relative;z-index:1;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--mute);margin-bottom:20px;}
.crumb a{color:var(--dim);transition:var(--t);}
.crumb a:hover{color:var(--accent);}
.crumb span{opacity:.55;}
.page-hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center;}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;padding:6px 15px;border-radius:999px;
 font-size:12.5px;color:#a9caff;border:1px solid rgba(63,169,255,.34);
 background:rgba(63,169,255,.1);margin-bottom:18px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent);display:inline-block;}
.page-hero h1{
 font-size:34px;line-height:1.34;font-weight:800;letter-spacing:.4px;margin-bottom:16px;
 background:linear-gradient(180deg,#ffffff 32%,#9ecbff 100%);
 -webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-hero .lead{font-size:15px;color:var(--dim);line-height:1.9;margin-bottom:24px;max-width:640px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.chip{
 padding:7px 15px;border-radius:999px;font-size:12.5px;color:#b7cbe8;
 border:1px solid var(--stroke);background:rgba(255,255,255,.035);transition:var(--t);
}
.chip:hover{color:#fff;border-color:var(--stroke-hi);background:rgba(63,169,255,.13);transform:translateY(-2px);}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero-media{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--stroke);box-shadow:var(--shadow);}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-media::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(180deg,rgba(4,7,17,0) 40%,rgba(4,7,17,.85));
}
.hero-media-note{
 position:absolute;left:16px;right:16px;bottom:14px;z-index:2;
 display:flex;align-items:center;justify-content:space-between;gap:12px;
 padding:11px 14px;border-radius:12px;
 background:rgba(8,13,26,.72);border:1px solid var(--stroke);
 backdrop-filter:blur(12px);font-size:12.5px;color:#cfe2ff;
}
.hero-media-note b{color:#fff;font-size:15px;}
/* ---------- sections ---------- */
.section{padding:70px 0;position:relative;}
.section-alt{background:var(--bg-soft);border-top:1px solid var(--stroke);border-bottom:1px solid var(--stroke);}
.section-head{max-width:760px;margin-bottom:38px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-tag{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;color:var(--accent);letter-spacing:1.2px;margin-bottom:12px;text-transform:uppercase;}
.section-tag::before{content:"";width:18px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--accent),var(--violet));}
.section-title{font-size:26px;line-height:1.4;font-weight:800;letter-spacing:.3px;color:#fff;}
.section-sub{margin-top:12px;font-size:14.5px;color:var(--dim);line-height:1.85;}
/* ---------- cards ---------- */
.grid{display:grid;gap:20px;}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr));}
.card{
 position:relative;
 padding:22px;
 border-radius:var(--radius);
 border:1px solid var(--stroke);
 background:var(--panel);
 backdrop-filter:blur(10px);
 transition:var(--t);
 box-shadow:0 16px 34px -30px rgba(0,0,0,.9);
}
.card:hover{
 transform:translateY(-4px);
 background:var(--panel-hover);
 border-color:var(--stroke-hi);
 box-shadow:0 26px 46px -26px rgba(0,0,0,.95),0 0 0 1px rgba(63,169,255,.2);
}
.card-icon{
 width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
 border:1px solid rgba(63,169,255,.3);background:rgba(63,169,255,.12);
 margin-bottom:16px;color:#bfe0ff;font-size:15px;font-weight:800;
}
.card h3{font-size:16.5px;font-weight:700;color:#fff;margin-bottom:9px;line-height:1.5;}
.card p{font-size:14px;color:var(--dim);line-height:1.85;}
.card .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag{
 font-size:12px;padding:4px 10px;border-radius:7px;
 background:rgba(63,169,255,.12);color:#a9caff;border:1px solid rgba(63,169,255,.22);
}
/* score bar */
.score-list{display:grid;gap:18px;}
.score-item{
 display:grid;grid-template-columns:150px 1fr 62px;gap:16px;align-items:center;
 padding:16px 18px;border-radius:var(--radius-sm);
 border:1px solid var(--stroke);background:var(--panel);transition:var(--t);
}
.score-item:hover{border-color:var(--stroke-hi);background:var(--panel-hover);}
.score-item b{font-size:14px;color:#fff;font-weight:600;}
.score-track{height:8px;border-radius:99px;background:rgba(255,255,255,.07);overflow:hidden;}
.score-fill{height:100%;border-radius:99px;background:linear-gradient(90deg,var(--accent),var(--violet));box-shadow:0 0 14px rgba(63,169,255,.55);}
.score-item em{font-style:normal;font-size:14px;font-weight:700;color:#9ecbff;text-align:right;}
/* steps */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;counter-reset:st;}
.step{
 position:relative;padding:24px 20px 22px;border-radius:var(--radius);
 border:1px solid var(--stroke);background:var(--panel);transition:var(--t);
}
.step:hover{transform:translateY(-4px);border-color:var(--stroke-hi);background:var(--panel-hover);}
.step::before{
 counter-increment:st;content:"0" counter(st);
 display:block;font-size:22px;font-weight:800;letter-spacing:1px;
 color:transparent;background:linear-gradient(135deg,#48b0ff,#7c5cff);
 -webkit-background-clip:text;background-clip:text;margin-bottom:12px;
}
.step h3{font-size:15.5px;color:#fff;margin-bottom:8px;}
.step p{font-size:13.5px;color:var(--dim);line-height:1.8;}
/* split feature */
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;}
.split-media{border-radius:var(--radius);overflow:hidden;border:1px solid var(--stroke);box-shadow:var(--shadow);position:relative;}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.split-media .float-badge{
 position:absolute;left:16px;bottom:16px;padding:9px 15px;border-radius:10px;
 background:rgba(8,13,26,.78);border:1px solid var(--stroke-hi);
 font-size:12.5px;color:#cfe2ff;backdrop-filter:blur(10px);
}
.checklist{display:grid;gap:14px;margin-top:22px;}
.checklist li{
 display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--dim);line-height:1.8;
 padding:14px 16px;border-radius:var(--radius-sm);
 border:1px solid var(--stroke);background:rgba(255,255,255,.028);transition:var(--t);
}
.checklist li:hover{border-color:var(--stroke-hi);background:rgba(63,169,255,.08);}
.checklist li b{color:#fff;font-weight:600;}
.check-dot{
 flex-shrink:0;width:20px;height:20px;border-radius:50%;margin-top:2px;
 background:rgba(63,169,255,.18);border:1px solid rgba(63,169,255,.45);
 display:grid;place-items:center;font-size:11px;color:#bfe0ff;font-weight:800;
}
/* stats */
.stats{
 display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;
 padding:30px;border-radius:var(--radius);
 border:1px solid var(--stroke);
 background:linear-gradient(135deg,rgba(63,169,255,.10),rgba(124,92,255,.09));
}
.stat{text-align:center;}
.stat b{display:block;font-size:28px;font-weight:800;color:#fff;letter-spacing:.5px;line-height:1.2;}
.stat span{display:block;margin-top:6px;font-size:12.5px;color:var(--mute);}
/* review quotes */
.quote{
 padding:24px;border-radius:var(--radius);border:1px solid var(--stroke);
 background:var(--panel);transition:var(--t);
}
.quote:hover{transform:translateY(-4px);border-color:var(--stroke-hi);background:var(--panel-hover);}
.quote p{font-size:14.5px;color:#cfdbf0;line-height:1.9;margin-bottom:18px;}
.quote footer{display:flex;align-items:center;gap:12px;}
.avatar{
 width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
 background:linear-gradient(135deg,rgba(63,169,255,.35),rgba(124,92,255,.35));
 border:1px solid var(--stroke-hi);font-size:14px;font-weight:700;color:#e9eefb;flex-shrink:0;
}
.quote footer strong{display:block;font-size:13.5px;color:#fff;font-weight:600;}
.quote footer em{font-style:normal;font-size:12px;color:var(--mute);}
/* list / news */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.news-card{
 display:flex;flex-direction:column;overflow:hidden;
 border-radius:var(--radius);border:1px solid var(--stroke);
 background:var(--panel);transition:var(--t);
}
.news-card:hover{transform:translateY(-4px);border-color:var(--stroke-hi);box-shadow:0 26px 46px -26px rgba(0,0,0,.95);}
.news-thumb{width:100%;aspect-ratio:16/10;object-fit:cover;}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.news-meta{display:flex;flex-wrap:wrap;gap:10px;font-size:12px;color:var(--mute);margin-bottom:10px;}
.news-meta .tag{font-size:11.5px;padding:3px 9px;}
.news-body h3{font-size:15.5px;color:#fff;line-height:1.6;margin-bottom:10px;}
.news-body p{font-size:13.5px;color:var(--dim);line-height:1.8;margin-bottom:16px;}
.news-link{margin-top:auto;font-size:13px;color:var(--accent);font-weight:600;display:inline-flex;align-items:center;gap:6px;transition:var(--t);}
.news-card:hover .news-link{gap:10px;}
.empty-note{
 padding:36px 24px;text-align:center;border-radius:var(--radius);
 border:1px dashed var(--stroke-hi);background:rgba(255,255,255,.025);
 font-size:14px;color:var(--dim);
}
/* faq */
.faq{display:grid;gap:14px;max-width:880px;margin:0 auto;}
.faq-item{
 border-radius:var(--radius-sm);border:1px solid var(--stroke);
 background:var(--panel);transition:var(--t);overflow:hidden;
}
.faq-item:hover{border-color:var(--stroke-hi);}
.faq-q{
 width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
 padding:18px 20px;background:transparent;border:0;cursor:pointer;
 font-size:15px;font-weight:600;color:#fff;text-align:left;line-height:1.6;
}
.faq-q i{
 flex-shrink:0;width:22px;height:22px;border-radius:50%;
 border:1px solid var(--stroke-hi);display:grid;place-items:center;
 font-style:normal;font-size:14px;color:#9ecbff;transition:var(--t);
}
.faq-item.open .faq-q i{background:rgba(63,169,255,.22);transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{padding:0 20px 20px;font-size:14px;color:var(--dim);line-height:1.9;}
/* cta */
.cta-band{
 position:relative;overflow:hidden;padding:46px 40px;border-radius:22px;
 border:1px solid var(--stroke-hi);
 background:
 radial-gradient(600px 260px at 12% 0%,rgba(63,169,255,.28),transparent 70%),
 radial-gradient(520px 260px at 92% 100%,rgba(124,92,255,.26),transparent 72%),
 rgba(8,13,26,.9);
 display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
 box-shadow:0 30px 60px -40px rgba(63,169,255,.7);
}
.cta-band h2{font-size:24px;color:#fff;font-weight:800;margin-bottom:10px;line-height:1.4;}
.cta-band p{font-size:14.5px;color:var(--dim);max-width:600px;line-height:1.85;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
/* footer */
.site-footer{padding:64px 0 26px;border-top:1px solid var(--stroke);background:var(--bg-deep);margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px;padding-bottom:36px;}
.footer-brand p{margin-top:16px;font-size:13.5px;color:var(--mute);line-height:1.85;max-width:420px;}
.footer-col h3{font-size:14px;color:#fff;font-weight:700;margin-bottom:16px;letter-spacing:.5px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:13.5px;color:var(--dim);transition:var(--t);}
.footer-col a:hover{color:var(--accent);padding-left:3px;}
.footer-bottom{
 border-top:1px solid var(--stroke);padding-top:22px;
 display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
 font-size:12.5px;color:var(--mute);
}
/* ---------- responsive ---------- */
@media (max-width:1024px){
 .page-hero-grid{grid-template-columns:1fr;gap:32px;}
 .hero-media{max-width:560px;}
 .grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
 .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
 .stats{grid-template-columns:repeat(2,minmax(0,1fr));}
 .news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
 .footer-grid{grid-template-columns:1fr 1fr;}
 .split{gap:28px;}
}
@media (max-width:860px){
 .main-nav{
  position:absolute;top:70px;left:0;right:0;
  flex-direction:column;align-items:stretch;gap:6px;
  padding:14px;border-radius:18px;
  background:rgba(7,11,22,.97);border:1px solid var(--stroke);
  box-shadow:0 24px 48px -24px rgba(0,0,0,.95);
  display:none;
 }
 .main-nav.open{display:flex;}
 .nav-link{padding:12px 16px;min-height:44px;display:flex;align-items:center;}
 .nav-toggle{display:flex;margin-left:auto;}
 .nav-cta{margin-left:0;display:none;}
 .hero-actions{gap:10px;}
 .split{grid-template-columns:1fr;}
 .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:768px){
 .section{padding:52px 0;}
 .page-hero{padding:40px 0 46px;}
 .page-hero h1{font-size:27px;}
 .section-title{font-size:22px;}
 .grid-2,.grid-3,.grid-4,.news-grid{grid-template-columns:1fr;}
 .steps{grid-template-columns:1fr;}
 .score-item{grid-template-columns:1fr;gap:10px;}
 .score-item em{text-align:left;}
 .cta-band{padding:32px 24px;border-radius:18px;}
 .cta-band h2{font-size:21px;}
 .footer-grid{grid-template-columns:1fr;gap:30px;}
 .stats{padding:22px;grid-template-columns:1fr 1fr;}
}
@media (max-width:520px){
 .container{padding:0 16px;}
 .header-inner{height:58px;padding:0 10px 0 14px;gap:10px;}
 .logo-text{font-size:13.5px;}
 .logo-mark{width:26px;height:26px;font-size:12px;}
 .page-hero h1{font-size:23px;line-height:1.42;}
 .section-title{font-size:20px;}
 .btn{width:100%;}
 .hero-actions{flex-direction:column;}
 .cta-actions{width:100%;flex-direction:column;}
 .stat b{font-size:23px;}
 .news-body{padding:16px;}
 .quote,.card{padding:18px;}
}

/* roulang page: category2 */
:root{
 --bg:#05080f;
 --bg-soft:#080d1a;
 --bg-deep:#040711;
 --panel:rgba(255,255,255,.045);
 --panel-hover:rgba(255,255,255,.078);
 --stroke:rgba(122,168,255,.16);
 --stroke-hi:rgba(122,190,255,.44);
 --text:#e9eefb;
 --dim:#9dabc9;
 --mute:#6b7a99;
 --accent:#3fa9ff;
 --accent-deep:#1b7ee0;
 --violet:#7c5cff;
 --radius:16px;
 --radius-sm:10px;
 --shadow:0 24px 48px -28px rgba(0,0,0,.96);
 --container:1180px;
 --t:.22s ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
 margin:0;
 font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
 background:var(--bg);
 color:var(--text);
 line-height:1.75;
 font-size:15px;
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.4;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
 outline:2px solid var(--accent);outline-offset:3px;border-radius:8px;
}
/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:100;padding:14px 16px 0;}
.header-inner{
 position:relative;
 max-width:var(--container);
 margin:0 auto;
 height:64px;
 display:flex;
 align-items:center;
 gap:18px;
 padding:0 12px 0 18px;
 border-radius:999px;
 border:1px solid var(--stroke);
 background:rgba(8,13,26,.72);
 backdrop-filter:blur(18px) saturate(150%);
 -webkit-backdrop-filter:blur(18px) saturate(150%);
 transition:var(--t);
}
.site-header.is-scrolled .header-inner{
 box-shadow:0 18px 36px -22px rgba(0,0,0,.95),0 0 0 1px rgba(63,169,255,.14);
 background:rgba(7,11,22,.9);
}
.logo{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;flex-shrink:0;}
.logo-mark{
 width:30px;height:30px;border-radius:9px;
 background:linear-gradient(135deg,var(--accent),var(--violet));
 box-shadow:0 0 18px rgba(63,169,255,.55);
 display:grid;place-items:center;
 font-size:13px;font-weight:800;color:#04101f;letter-spacing:-1px;
}
.logo-text{font-size:15px;font-weight:700;letter-spacing:.4px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
 padding:8px 14px;border-radius:999px;font-size:14px;color:var(--dim);
 transition:var(--t);white-space:nowrap;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.07);}
.nav-link.is-active{
 color:#fff;background:rgba(63,169,255,.16);
 box-shadow:inset 0 0 0 1px rgba(63,169,255,.36);
}
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:11px 22px;border-radius:10px;font-size:14px;font-weight:600;
 border:1px solid transparent;cursor:pointer;transition:var(--t);
 min-height:42px;text-align:center;
}
.btn-primary{
 background:linear-gradient(135deg,#48b0ff,#5c7dff);
 color:#04101f;
 box-shadow:0 0 22px rgba(63,169,255,.42);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 32px rgba(63,169,255,.72);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
 border-color:var(--stroke-hi);color:#cfe2ff;background:rgba(255,255,255,.03);
}
.btn-ghost:hover{background:rgba(63,169,255,.12);border-color:var(--accent);transform:translateY(-2px);}
.nav-cta{padding:9px 18px;font-size:13px;min-height:38px;flex-shrink:0;}
.nav-toggle{
 display:none;width:42px;height:42px;border-radius:12px;
 border:1px solid var(--stroke);background:rgba(255,255,255,.05);
 cursor:pointer;align-items:center;justify-content:center;flex-shrink:0;
}
.nav-toggle span{display:block;width:16px;height:1.6px;background:#cfe2ff;border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
 content:"";position:absolute;left:0;width:16px;height:1.6px;background:#cfe2ff;border-radius:2px;
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}
/* ---------- hero ---------- */
.hero{
 position:relative;overflow:hidden;
 padding:66px 0 78px;
 background:
 radial-gradient(900px 420px at 50% -12%,rgba(63,169,255,.24),transparent 66%),
 radial-gradient(720px 400px at 88% 18%,rgba(124,92,255,.20),transparent 72%),
 var(--bg-deep);
 border-bottom:1px solid var(--stroke);
}
.hero-bg{position:absolute;inset:0;z-index:0;pointer-events:none;}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.2;}
.hero-bg::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(180deg,rgba(4,7,17,.55),rgba(4,7,17,.94));
}
.hero-inner{position:relative;z-index:1;text-align:center;max-width:880px;}
.hero-badge{
 display:inline-flex;align-items:center;gap:8px;
 padding:7px 16px;border-radius:999px;font-size:13px;color:#a9caff;
 border:1px solid rgba(63,169,255,.34);background:rgba(63,169,255,.1);
 margin-bottom:22px;
}
.hero-badge i{
 width:6px;height:6px;border-radius:50%;background:var(--accent);
 box-shadow:0 0 10px var(--accent);display:inline-block;
}
.hero h1{
 font-size:40px;line-height:1.3;font-weight:800;letter-spacing:.5px;
 margin:0 0 20px;
 background:linear-gradient(180deg,#ffffff 30%,#9ecbff 100%);
 -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{
 font-size:15.5px;color:var(--dim);line-height:1.85;
 max-width:760px;margin:0 auto 30px;
}
.hero-chips{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:32px;}
.chip{
 padding:8px 16px;border-radius:999px;font-size:13px;color:#b7cbe8;
 border:1px solid var(--stroke);background:rgba(255,255,255,.035);
 transition:var(--t);
}
.chip:hover{color:#fff;border-color:var(--stroke-hi);background:rgba(63,169,255,.13);transform:translateY(-2px);}
/* ---------- category hero ---------- */
.hero-cat{padding:56px 0 64px;}
.hero-cat-inner{
 position:relative;z-index:1;
 display:grid;grid-template-columns:1.12fr .88fr;gap:44px;align-items:center;
}
.hero-copy{text-align:left;}
.hero-cat h1{
 font-size:34px;line-height:1.34;
 background:linear-gradient(180deg,#ffffff 32%,#9ecbff 100%);
 -webkit-background-clip:text;background-clip:text;color:transparent;
 margin:0 0 16px;
}
.hero-cat .hero-lead{margin:0 0 22px;max-width:none;font-size:15px;}
.hero-cat .hero-chips{justify-content:flex-start;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.glass{
 background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.028));
 border:1px solid var(--stroke);
 border-radius:var(--radius);
 backdrop-filter:blur(16px);
 -webkit-backdrop-filter:blur(16px);
 box-shadow:var(--shadow);
}
.roadmap{padding:26px 24px 24px;}
.roadmap h2{font-size:15px;color:#cfe2ff;letter-spacing:.6px;margin:0 0 18px;}
.roadmap-list{display:grid;gap:15px;margin-bottom:22px;}
.roadmap-list li{display:flex;gap:12px;align-items:flex-start;}
.roadmap-list .dot{
 width:9px;height:9px;border-radius:50%;background:var(--accent);
 box-shadow:0 0 12px var(--accent);margin-top:8px;flex-shrink:0;
}
.roadmap-list b{display:block;font-size:14px;color:#eaf2ff;margin-bottom:2px;}
.roadmap-list em{font-size:12.5px;color:var(--mute);font-style:normal;line-height:1.7;}
.sub-form{display:flex;gap:8px;padding:6px;border-radius:999px;border:1px solid var(--stroke);background:rgba(255,255,255,.05);}
.sub-form input{
 flex:1;min-width:0;background:transparent;border:0;outline:none;
 padding:0 14px;font-size:13.5px;min-height:40px;color:var(--text);
}
.sub-form input::placeholder{color:var(--mute);}
.sub-form .btn{padding:0 18px;min-height:40px;font-size:13px;flex-shrink:0;}
.form-tip{font-size:12px;color:var(--mute);margin-top:12px;line-height:1.7;}
/* ---------- sections ---------- */
.section{padding:72px 0;position:relative;}
.section-alt{background:var(--bg-soft);border-top:1px solid var(--stroke);border-bottom:1px solid var(--stroke);}
.section-head{max-width:740px;margin-bottom:40px;}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;
 font-size:12.5px;letter-spacing:2px;color:#7fb6ff;margin-bottom:12px;
}
.eyebrow::before{
 content:"";width:22px;height:2px;border-radius:2px;
 background:linear-gradient(90deg,var(--accent),transparent);
}
.section-head h2{font-size:27px;margin:0 0 14px;line-height:1.42;}
.section-head p{margin:0;color:var(--dim);font-size:14.5px;line-height:1.85;}
/* ---------- pattern cards ---------- */
.pattern-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.card{
 background:var(--panel);border:1px solid var(--stroke);border-radius:var(--radius);
 overflow:hidden;transition:var(--t);
}
.card:hover{
 transform:translateY(-4px);border-color:var(--stroke-hi);
 background:var(--panel-hover);
 box-shadow:0 26px 48px -30px rgba(63,169,255,.55);
}
.card-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg-deep);}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;opacity:.92;}
.card:hover .card-thumb img{transform:scale(1.05);opacity:1;}
.card-body{padding:18px 20px 20px;}
.card h3{font-size:17px;margin-bottom:9px;color:#f2f7ff;}
.card p{color:var(--dim);font-size:14px;line-height:1.8;margin-bottom:14px;}
.tag{
 display:inline-block;padding:5px 12px;border-radius:999px;font-size:12px;
 color:#a9caff;background:rgba(63,169,255,.12);border:1px solid rgba(63,169,255,.24);
}
/* ---------- split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.split-media img{
 width:100%;border-radius:var(--radius);border:1px solid var(--stroke);
 box-shadow:var(--shadow);aspect-ratio:4/3;object-fit:cover;
}
.clue-list{display:grid;gap:14px;margin-top:24px;}
.clue-list li{
 padding:16px 18px;border-radius:var(--radius-sm);
 border:1px solid var(--stroke);background:var(--panel);transition:var(--t);
}
.clue-list li:hover{border-color:var(--stroke-hi);background:var(--panel-hover);transform:translateX(3px);}
.clue-list b{display:block;font-size:15px;margin-bottom:6px;color:#f2f7ff;}
.clue-list span{font-size:14px;color:var(--dim);line-height:1.8;}
/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;counter-reset:step;}
.step{
 position:relative;padding:22px 24px 22px 76px;border-radius:var(--radius);
 border:1px solid var(--stroke);background:var(--panel);transition:var(--t);
}
.step:hover{border-color:var(--stroke-hi);background:var(--panel-hover);transform:translateY(-3px);}
.step::before{
 counter-increment:step;content:"0" counter(step);
 position:absolute;left:24px;top:20px;font-size:20px;font-weight:800;
 color:var(--accent);letter-spacing:.5px;
}
.step h3{font-size:16px;margin-bottom:8px;color:#f2f7ff;}
.step p{font-size:14px;color:var(--dim);line-height:1.8;}
/* ---------- table ---------- */
.table-wrap{
 overflow-x:auto;border-radius:var(--radius);border:1px solid var(--stroke);
 background:rgba(255,255,255,.03);box-shadow:var(--shadow);
}
table{width:100%;border-collapse:collapse;min-width:660px;}
th,td{
 padding:15px 18px;text-align:left;font-size:14px;
 border-bottom:1px solid rgba(122,168,255,.1);
}
th{background:rgba(63,169,255,.08);color:#cfe2ff;font-weight:600;white-space:nowrap;}
td{color:var(--dim);}
td strong{color:#fff;font-weight:700;}
tbody tr{transition:background .18s ease;}
tbody tr:hover{background:rgba(63,169,255,.07);}
tbody tr:last-child td{border-bottom:0;}
.table-note{font-size:12.5px;color:var(--mute);margin-top:14px;line-height:1.8;}
/* ---------- fix list ---------- */
.fix-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.fix{
 display:grid;gap:10px;padding:20px 22px;border-radius:var(--radius-sm);
 border:1px solid var(--stroke);background:var(--panel);transition:var(--t);
}
.fix:hover{border-color:var(--stroke-hi);background:var(--panel-hover);transform:translateY(-3px);}
.fix .wrong{font-size:14px;color:#ff9aa8;line-height:1.7;}
.fix .right{font-size:14px;color:#86e6c0;line-height:1.7;}
.fix .wrong b,.fix .right b{font-weight:700;}
/* ---------- timeline + stats ---------- */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.tl-item{
 padding:22px 20px;border-radius:var(--radius);border:1px solid var(--stroke);
 background:var(--panel);position:relative;transition:var(--t);
}
.tl-item:hover{border-color:var(--stroke-hi);background:var(--panel-hover);transform:translateY(-3px);}
.tl-item span{display:inline-block;font-size:12px;color:#8fc2ff;letter-spacing:1px;margin-bottom:10px;}
.tl-item h3{font-size:15.5px;margin-bottom:8px;color:#f2f7ff;}
.tl-item p{font-size:13.5px;color:var(--dim);line-height:1.8;}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:26px;}
.stat{
 text-align:center;padding:22px 12px;border-radius:var(--radius-sm);
 border:1px solid var(--stroke);background:rgba(63,169,255,.06);
}
.stat strong{display:block;font-size:26px;color:#fff;font-weight:800;letter-spacing:.5px;}
.stat span{font-size:12.5px;color:var(--mute);}
/* ---------- quotes ---------- */
.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.quote{
 padding:24px;border-radius:var(--radius);border:1px solid var(--stroke);
 background:var(--panel);transition:var(--t);
}
.quote:hover{border-color:var(--stroke-hi);background:var(--panel-hover);transform:translateY(-3px);}
.quote p{font-size:14px;color:var(--dim);line-height:1.85;margin-bottom:16px;}
.quote .who{display:flex;align-items:center;gap:10px;font-size:13px;color:#cfe2ff;}
.quote .who i{
 width:26px;height:26px;border-radius:8px;font-style:normal;font-weight:700;font-size:12px;
 background:linear-gradient(135deg,var(--accent),var(--violet));
 display:grid;place-items:center;color:#04101f;flex-shrink:0;
}
/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.news-card{
 display:block;padding:22px;border-radius:var(--radius);border:1px solid var(--stroke);
 background:var(--panel);transition:var(--t);height:100%;
}
.news-card:hover{
 transform:translateY(-4px);border-color:var(--stroke-hi);
 background:var(--panel-hover);box-shadow:0 24px 44px -30px rgba(63,169,255,.5);
}
.news-meta{display:flex;flex-wrap:wrap;gap:12px;font-size:12px;color:var(--mute);margin-bottom:10px;}
.news-card h3{font-size:16px;line-height:1.6;margin-bottom:10px;color:#f2f7ff;}
.news-card p{font-size:13.5px;color:var(--dim);line-height:1.78;}
.empty-tip{
 padding:26px;border-radius:var(--radius-sm);border:1px dashed var(--stroke);
 color:var(--mute);font-size:14px;text-align:center;
}
/* ---------- faq ---------- */
.faq-list{display:grid;gap:14px;max-width:900px;}
.faq-item{
 border:1px solid var(--stroke);border-radius:var(--radius-sm);
 background:var(--panel);padding:18px 22px;transition:var(--t);
}
.faq-item:hover{border-color:var(--stroke-hi);}
.faq-item summary{
 cursor:pointer;font-size:15px;font-weight:600;color:#eaf2ff;
 list-style:none;display:flex;justify-content:space-between;align-items:center;gap:14px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";color:var(--accent);font-size:18px;font-weight:700;flex-shrink:0;}
.faq-item[open] summary::after{content:"–";}
.faq-item p{margin-top:12px;font-size:14px;color:var(--dim);line-height:1.85;}
/* ---------- cta ---------- */
.cta-band{
 margin-top:44px;padding:42px;border-radius:var(--radius);
 border:1px solid rgba(63,169,255,.32);
 background:
 radial-gradient(600px 240px at 10% 0%,rgba(63,169,255,.22),transparent 70%),
 radial-gradient(500px 220px at 92% 100%,rgba(124,92,255,.18),transparent 72%),
 rgba(255,255,255,.04);
 display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
 box-shadow:var(--shadow);
}
.cta-band h2{font-size:24px;margin-bottom:10px;}
.cta-band p{font-size:14px;color:var(--dim);line-height:1.8;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
/* ---------- footer ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--stroke);padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px;padding-bottom:36px;}
.footer-brand p{color:var(--mute);font-size:13.5px;line-height:1.85;margin-top:14px;max-width:380px;}
.footer-col h3{font-size:14px;margin-bottom:14px;color:#dbe6ff;letter-spacing:.4px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{color:var(--mute);font-size:13.5px;transition:var(--t);}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
 border-top:1px solid rgba(122,168,255,.12);
 padding:20px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
}
.footer-bottom p{margin:0;font-size:12.5px;color:var(--mute);}
/* ---------- responsive ---------- */
@media (max-width:1024px){
 .hero-cat-inner{grid-template-columns:1fr;gap:34px;}
 .hero-cat h1{font-size:30px;}
 .pattern-grid{grid-template-columns:repeat(2,1fr);}
 .timeline{grid-template-columns:repeat(2,1fr);}
 .news-grid{grid-template-columns:repeat(2,1fr);}
 .quotes{grid-template-columns:1fr;}
 .split{gap:30px;}
 .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:26px;}
}
@media (max-width:900px){
 .main-nav{
  position:absolute;top:calc(100% + 10px);left:0;right:0;
  flex-direction:column;align-items:stretch;gap:6px;padding:12px;
  border-radius:18px;border:1px solid var(--stroke);
  background:rgba(7,11,22,.97);box-shadow:var(--shadow);display:none;
 }
 .main-nav.is-open{display:flex;}
 .nav-link{padding:12px 14px;border-radius:12px;font-size:14.5px;}
 .nav-toggle{display:flex;}
 .nav-cta{margin-left:auto;}
 .split{grid-template-columns:1fr;}
 .split-media{order:-1;}
 .stats{grid-template-columns:repeat(2,1fr);}
 .cta-band{padding:32px;}
}
@media (max-width:768px){
 .section{padding:56px 0;}
 .hero-cat{padding:44px 0 52px;}
 .hero-cat h1{font-size:26px;}
 .section-head h2{font-size:23px;}
 .pattern-grid{grid-template-columns:1fr;}
 .steps{grid-template-columns:1fr;}
 .fix-grid{grid-template-columns:1fr;}
 .news-grid{grid-template-columns:1fr;}
 .timeline{grid-template-columns:1fr;}
 .footer-grid{grid-template-columns:1fr;gap:28px;}
 .logo-text{font-size:14px;}
 .cta-band h2{font-size:21px;}
}
@media (max-width:520px){
 .header-inner{height:58px;padding:0 8px 0 14px;gap:10px;}
 .nav-cta{padding:8px 14px;font-size:12.5px;min-height:36px;}
 .hero-cat h1{font-size:23px;}
 .hero-lead{font-size:14px;}
 .chip{font-size:12px;padding:7px 13px;}
 .hero-actions .btn{flex:1 1 100%;}
 .sub-form{flex-direction:column;border-radius:14px;}
 .sub-form input{min-height:42px;}
 .sub-form .btn{width:100%;border-radius:10px;min-height:42px;}
 .stat strong{font-size:22px;}
 .cta-band{padding:24px;}
 .cta-actions .btn{flex:1 1 100%;}
 .footer-bottom{flex-direction:column;align-items:flex-start;}
}