:root{--bg:#0a0e17;--bg2:#0f1524;--card:#141b2e;--line:#232c45;--tx:#e8edf7;--mut:#93a0bd;--ac:#4f8cff}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
background:radial-gradient(1200px 600px at 70% -10%,#1b2a52 0%,var(--bg) 55%) fixed,var(--bg);
color:var(--tx);line-height:1.65;-webkit-font-smoothing:antialiased}
.wrap{max-width:1040px;margin:0 auto;padding:0 24px}
a{color:inherit}
header{position:sticky;top:0;z-index:9;background:rgba(10,14,23,.78);backdrop-filter:blur(12px);
border-bottom:1px solid var(--line)}
header .wrap{display:flex;justify-content:space-between;align-items:center;height:62px}
.logo{font-weight:800;font-size:21px;text-decoration:none;letter-spacing:-.3px}
.logo span{color:var(--ac)}
nav{display:flex;gap:4px;flex-wrap:wrap}
nav a{color:var(--mut);text-decoration:none;font-size:13.5px;padding:6px 11px;border-radius:8px}
nav a:hover{color:var(--tx);background:var(--card)}
.hero{padding:96px 0 56px;text-align:center}
.hero .kicker{display:inline-block;font-size:12.5px;letter-spacing:2.5px;text-transform:uppercase;
color:var(--ac);border:1px solid #2b3c66;border-radius:99px;padding:5px 16px;margin-bottom:22px;background:#111a30}
.hero h1{font-size:clamp(34px,6vw,56px);line-height:1.12;letter-spacing:-.2px;margin-bottom:18px;
background:linear-gradient(180deg,#fff 30%,#a9b8dc);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:var(--mut);font-size:19px;max-width:620px;margin:0 auto}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;padding:8px 0 56px}
.card{background:linear-gradient(180deg,#182038,var(--card));border:1px solid var(--line);border-radius:18px;padding:28px 24px;text-decoration:none;transition:.18s;position:relative;overflow:hidden}
.card:hover{transform:translateY(-4px);border-color:var(--h)}
.card::after{content:"";position:absolute;inset:0 0 auto;height:3px;background:var(--h)}
.card .ic{display:block}
.card .ic img{width:52px;height:52px;border-radius:13px;display:block;margin-bottom:14px}
.card h2{font-size:19px;margin-bottom:6px}
.card .st{font-size:12px;color:var(--ac);margin-bottom:10px;font-weight:600}
.card p{color:var(--mut);font-size:14px;margin-bottom:18px;min-height:63px}
.more{font-size:13.5px;color:var(--ac);font-weight:600}
/* app page */
.apphero{padding:88px 0 40px;text-align:center}
.apphero .ic{display:inline-block}
.apphero .ic img{width:88px;height:88px;border-radius:22px;display:block;margin:0 auto 18px;filter:drop-shadow(0 10px 28px var(--h))}
.apphero h1{font-size:clamp(30px,5vw,46px);letter-spacing:-.8px;margin-bottom:12px}
.apphero .tag{color:var(--mut);font-size:18px;max-width:560px;margin:0 auto 26px}
.badge{display:inline-flex;align-items:center;gap:9px;background:#fff;color:#0b0f1a;text-decoration:none;
padding:12px 24px;border-radius:12px;font-weight:700;font-size:15px;transition:.15s}
.badge:hover{transform:scale(1.03)}
.badge svg{width:18px;height:18px}
.featgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;padding:22px 0 40px}
.f{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px}
.f h3{font-size:16px;margin-bottom:6px}
.f p{color:var(--mut);font-size:14px}
/* long-form seo copy */
.copy{max-width:760px;margin:0 auto;padding:8px 0 20px}
.copy h2{font-size:23px;letter-spacing:-.3px;margin:36px 0 10px}
.copy h2:first-child{margin-top:8px}
.copy p{color:var(--mut);font-size:15.5px;margin-bottom:10px}
.faq{max-width:760px;margin:0 auto;padding:16px 0 44px}
.faq h2{font-size:23px;margin-bottom:14px}
details{background:var(--card);border:1px solid var(--line);border-radius:12px;margin-bottom:10px;padding:0 20px}
details summary{cursor:pointer;font-weight:600;padding:16px 0;list-style:none;display:flex;justify-content:space-between;align-items:center}
details summary::after{content:"+";color:var(--ac);font-size:20px;font-weight:400}
details[open] summary::after{content:"–"}
details p{color:var(--mut);font-size:14.5px;padding-bottom:16px}
.back{display:inline-block;margin:22px 0 0;color:var(--mut);text-decoration:none;font-size:14px}
.back:hover{color:var(--tx)}
.other{padding:10px 0 72px}
.other h2{font-size:22px;margin-bottom:16px}
.seofoot{max-width:900px;margin:0 auto;padding:0 24px 56px;color:#5b6884}
footer{padding:34px 0;border-top:1px solid var(--line);color:var(--mut);font-size:13px;text-align:center}
footer a{color:var(--mut)}
footer nav{justify-content:center;margin-bottom:10px}
.prose{max-width:720px;margin:0 auto;padding:56px 0 72px}
.prose h2{font-size:26px;margin-bottom:6px}
.prose h3{margin:26px 0 8px;font-size:17px}
.prose p{color:var(--mut);margin-bottom:12px;font-size:15px}
.prose a{color:var(--ac)}
h2.sec{font-size:23px;margin:0 0 14px}