:root{--purple:#6957E9;--purple-deep:#5644D1;--ink:#22243B;--muted:#6b7289;--line:#E9EAF1;--soft:#F7F8FC;color-scheme:light}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--purple-deep)}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.site-header{position:sticky;top:0;z-index:5;background:#fffffff2;backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;gap:22px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--ink);text-decoration:none}
.mark{display:grid;grid-template-columns:repeat(2,9px);gap:3px}.mark i{width:9px;height:9px;border-radius:3px;background:var(--purple)}.mark i:nth-child(2){background:#ffbf3c}.mark i:nth-child(3){background:#37c3a0}.mark i:nth-child(4){background:#ef6b8a}
.site-header nav{display:flex;gap:4px;margin-left:12px;flex:1;overflow-x:auto}
.site-header nav a,.site-footer nav a{color:#585D72;text-decoration:none;font-size:14px;font-weight:600;padding:8px 10px;border-radius:8px;white-space:nowrap}
.site-header nav a:hover,.site-header nav a[aria-current]{background:#EFEDFF;color:var(--purple-deep)}
.btn{display:inline-block;border:1px solid #d9dbe8;border-radius:10px;padding:12px 20px;font-weight:700;font-size:15px;color:var(--ink);text-decoration:none;background:#fff}
.btn:hover{border-color:var(--purple)}
.btn.primary{background:var(--purple);border-color:var(--purple);color:#fff}.btn.primary:hover{background:var(--purple-deep)}
.btn.small{padding:8px 16px;font-size:14px;background:var(--purple);border-color:var(--purple);color:#fff}
.hero{background:linear-gradient(180deg,#f3f1ff,#fff);padding:64px 0 40px;text-align:center}
.hero h1{font-size:clamp(30px,5vw,48px);line-height:1.15;margin:0 auto 16px;max-width:820px;letter-spacing:-.02em}
.lead{font-size:clamp(16px,2vw,19px);color:var(--muted);max-width:700px;margin:0 auto 26px}
.hero .btn{margin:4px}
.content{padding-bottom:50px}
.block{padding:34px 0}
.block h2{font-size:clamp(22px,3vw,30px);margin:0 0 18px;letter-spacing:-.01em}
.block p{max-width:760px;color:#3f4560}
.center{text-align:center}.center p{margin-inline:auto}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}
.feature{background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:20px}
.feature h3{margin:0 0 8px;font-size:17px}.feature p{margin:0;color:var(--muted);font-size:15px}
.steps{list-style:none;counter-reset:s;padding:0;margin:0;display:grid;gap:14px;max-width:760px}
.steps li{counter-increment:s;display:grid;grid-template-columns:44px 1fr;column-gap:14px;align-items:start}
.steps li::before{content:counter(s);grid-row:span 2;width:44px;height:44px;border-radius:50%;background:var(--purple);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}
.steps strong{font-size:17px}.steps span{color:var(--muted)}
.faq details{border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin-bottom:10px;background:#fff}
.faq summary{cursor:pointer;font-weight:700}.faq p{margin:10px 0 0;color:var(--muted)}
.related ul{margin:0;padding-left:20px}.related li{margin:6px 0}
.site-footer{border-top:1px solid var(--line);background:var(--soft);padding:22px 0;color:var(--muted);font-size:14px}
.site-footer .wrap{display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.site-footer nav{display:flex;gap:2px;flex-wrap:wrap}
@media(max-width:720px){.site-header nav{display:none}.site-header .wrap{justify-content:space-between}.hero{padding:44px 0 28px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}