:root{--c:#2563eb;--c2:#1d4ed8;--bg:#f7f8fa;--fg:#111827;--mut:#6b7280;--line:#e5e7eb;--card:#fff;--err:#dc2626;--ok:#16a34a}
*{box-sizing:border-box}
html,body{margin:0}
body{font:16px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--fg);background:var(--bg);min-height:100vh;display:flex;flex-direction:column}
main{flex:1}
a{color:var(--c);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
.row{display:flex;align-items:center;gap:16px}.between{justify-content:space-between}
.top{background:#fff;border-bottom:1px solid var(--line)}
.top .row{height:64px;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--fg);font-size:18px}.logo:hover{text-decoration:none}
.logo-mark{width:30px;height:30px;border-radius:8px;background:var(--c);display:grid;place-items:center}
.nav{display:flex;align-items:center;gap:20px}.nav a:not(.btn){color:var(--mut)}
.btn{display:inline-block;background:var(--c);color:#fff;border:0;border-radius:10px;padding:11px 20px;font:inherit;font-weight:600;cursor:pointer;text-align:center;transition:background .15s}
.btn:hover{background:var(--c2);text-decoration:none}.btn:disabled{opacity:.6;cursor:default}
.btn-sm{padding:7px 14px;font-size:14px}.btn-block{width:100%}
.btn-ghost{background:#fff;color:var(--fg);border:1px solid var(--line)}.btn-ghost:hover{background:#f3f4f6}
.hero{padding:88px 0 56px;text-align:center}
.hero h1{font-size:44px;line-height:1.15;margin:16px auto;max-width:760px;letter-spacing:-.02em}
.lead{font-size:19px;color:var(--mut);max-width:640px;margin:0 auto 28px}
.cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:14px}
.pill{display:inline-block;padding:4px 12px;border-radius:99px;background:#fff;border:1px solid var(--line);font-size:13px;color:var(--mut)}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;padding-bottom:40px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px}
.card h3{margin:0 0 6px}.card p{margin:0;color:var(--mut)}
.strip{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:28px 20px 72px;text-align:center}
.strip b{display:block;font-size:22px}.strip span{color:var(--mut);font-size:14px}
.muted{color:var(--mut)}.small{font-size:14px}.center{text-align:center}.big{font-size:72px;font-weight:800;color:var(--c);margin:0}
.auth{display:grid;place-items:center;padding:56px 20px}
.auth-box{width:100%;max-width:400px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:32px;box-shadow:0 8px 30px rgba(0,0,0,.04)}
.auth-box h1{font-size:24px;margin:0 0 4px}
form{display:flex;flex-direction:column;gap:14px;margin-top:20px}
label{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:600}
input,textarea{font:inherit;font-weight:400;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:#fff;width:100%}
input:focus,textarea:focus{outline:2px solid var(--c);outline-offset:-1px;border-color:transparent}
.pw{position:relative;display:block}.pw input{padding-right:90px}
.pw-toggle{position:absolute;right:8px;top:50%;transform:translateY(-50%);border:0;background:none;color:var(--c);font:inherit;font-size:13px;cursor:pointer}
.check{flex-direction:row;align-items:center;gap:8px;font-weight:400}.check input{width:auto}
.err{color:var(--err);font-size:14px;margin:0;background:#fef2f2;border:1px solid #fecaca;border-radius:8px;padding:8px 12px}
.sep{display:flex;align-items:center;gap:12px;color:var(--mut);font-size:13px;margin:18px 0}
.sep:before,.sep:after{content:"";flex:1;height:1px;background:var(--line)}
.modal{position:fixed;inset:0;background:rgba(17,24,39,.45);display:grid;place-items:center;padding:20px;z-index:10}
.modal[hidden]{display:none}
.modal-box{position:relative;background:#fff;border-radius:16px;padding:28px;width:100%;max-width:440px}
.modal-box h2{margin:0 0 4px}
.modal-x{position:absolute;right:14px;top:10px;border:0;background:none;font-size:26px;color:var(--mut);cursor:pointer}
.page{padding:40px 20px 72px}.narrow{max-width:720px}
.page h2{margin-top:32px}
details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin-bottom:10px}
summary{cursor:pointer;font-weight:600}details p{color:var(--mut);margin:10px 0 0}
.status-banner{background:#f0fdf4;border:1px solid #bbf7d0;color:#15803d;border-radius:12px;padding:16px 20px;font-weight:600;margin:16px 0}
.status-banner.bad{background:#fef2f2;border-color:#fecaca;color:var(--err)}
.status-list{list-style:none;padding:0;margin:0 0 12px;background:#fff;border:1px solid var(--line);border-radius:12px}
.status-list li{display:flex;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--line)}
.status-list li:last-child{border-bottom:0}
.ok{color:var(--ok)}.bad-t{color:var(--err)}
.page .card{margin-bottom:10px}
.foot{border-top:1px solid var(--line);background:#fff;font-size:14px;color:var(--mut)}
.foot .row{height:64px;justify-content:space-between;flex-wrap:wrap}
.foot-links{display:flex;gap:18px}.foot-links a{color:var(--mut)}
@media(max-width:760px){.hero h1{font-size:32px}.features,.strip{grid-template-columns:1fr 1fr}.nav a:not(.btn){display:none}.foot .row{height:auto;padding:16px 20px}}
@media(max-width:480px){.features{grid-template-columns:1fr}}