:root{
  --bg:#0b1020;--card:#141b33;--card2:#1d2540;--text:#e3e4f0;--muted:#a9abc4;--faint:#6f7290;
  --accent:#9fb0ff;--accent-ink:#10195e;--gold:#f5bc72;--line:#2a3352;--danger:#f2b8b5;
}
*{box-sizing:border-box}
html{color-scheme:dark}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Inter,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--accent)}
.wrap{max-width:960px;margin:0 auto;padding:0 20px}
header.top{display:flex;align-items:center;justify-content:space-between;padding:22px 20px;gap:16px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.15rem;color:var(--text);text-decoration:none}
.brand svg{width:30px;height:30px}
nav.links{display:flex;gap:18px;flex-wrap:wrap}
nav.links a{color:var(--muted);text-decoration:none;font-size:.95rem}
nav.links a:hover,nav.links a[aria-current]{color:var(--text)}
.hero{padding:40px 0 20px}
.hero h1{font-size:clamp(2rem,5vw,3.1rem);line-height:1.1;margin:0 0 14px;letter-spacing:-.02em}
.hero p.lead{font-size:1.15rem;color:var(--muted);max-width:620px;margin:0}
.grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.card{background:var(--card);border-radius:22px;padding:24px}
.card h2,.card h3{margin:0 0 10px}
.tariff{display:grid;gap:18px;grid-template-columns:1fr;align-items:start}
@media(min-width:760px){.tariff{grid-template-columns:1.1fr .9fr}}
.price{font-size:2.6rem;font-weight:700;letter-spacing:-.02em;line-height:1}
.price small{font-size:1rem;font-weight:500;color:var(--muted);margin-left:6px}
ul.perks{list-style:none;padding:0;margin:16px 0 0}
ul.perks li{padding:8px 0 8px 30px;position:relative;color:var(--text)}
ul.perks li::before{content:"";position:absolute;left:0;top:14px;width:18px;height:18px;border-radius:50%;background:var(--accent);
  mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z'/%3E%3C/svg%3E") center/contain no-repeat}
label{display:block;font-size:.9rem;color:var(--muted);margin:14px 0 6px}
input[type=email]{width:100%;padding:14px 16px;border-radius:14px;border:1px solid var(--line);background:var(--bg);color:var(--text);font-size:1rem}
input[type=email]:focus{outline:2px solid var(--accent);border-color:transparent}
.methods{display:grid;gap:10px;grid-template-columns:1fr;margin-top:8px}
.methods button{padding:14px 16px;border-radius:14px;border:1px solid var(--line);background:var(--card2);color:var(--text);font-size:1rem;cursor:pointer;text-align:left;line-height:1.3}
.methods button.pay{background:var(--accent);color:var(--accent-ink);font-weight:600;border-color:transparent}
.methods button.pay span{color:var(--accent-ink);opacity:.75}
.methods button span{display:block;color:var(--muted);font-size:.82rem;margin-top:2px}
.methods button:hover{border-color:var(--accent)}
.methods button[disabled]{opacity:.5;cursor:default}
.btn{display:inline-block;padding:14px 22px;border-radius:16px;background:var(--accent);color:var(--accent-ink);font-weight:600;text-decoration:none;border:0;cursor:pointer;font-size:1rem}
.btn.secondary{background:transparent;color:var(--text);border:1px solid var(--line)}
.note{color:var(--muted);font-size:.9rem}
.err{color:var(--danger);font-size:.92rem;min-height:1.4em;margin-top:10px}
.steps{counter-reset:s;display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.steps div{background:var(--card);border-radius:18px;padding:18px 18px 18px 56px;position:relative;color:var(--muted)}
.steps div strong{display:block;color:var(--text);margin-bottom:4px}
.steps div::before{counter-increment:s;content:counter(s);position:absolute;left:18px;top:18px;width:26px;height:26px;border-radius:50%;background:var(--card2);color:var(--accent);font-weight:700;text-align:center;line-height:26px;font-size:.9rem}
section{padding:26px 0}
h2.sec{font-size:1.5rem;margin:0 0 16px;letter-spacing:-.01em}
details{background:var(--card);border-radius:16px;padding:14px 18px;margin-bottom:10px}
summary{cursor:pointer;font-weight:600}
details p{color:var(--muted);margin:10px 0 0}
.code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:1.9rem;letter-spacing:.14em;background:var(--bg);border-radius:16px;padding:18px;text-align:center;margin:18px 0;color:var(--gold);user-select:all}
.doc{max-width:760px}
.doc h1{font-size:2rem;letter-spacing:-.02em;margin:10px 0 4px}
.doc .date{color:var(--faint);font-size:.9rem;margin-bottom:26px}
.doc h2{font-size:1.25rem;margin:30px 0 8px}
.doc p,.doc li{color:var(--muted)}
.doc strong{color:var(--text)}
.doc table{border-collapse:collapse;width:100%;font-size:.95rem}
.doc td,.doc th{border-bottom:1px solid var(--line);padding:10px 8px;text-align:left;vertical-align:top;color:var(--muted)}
.doc th{color:var(--text)}
footer{border-top:1px solid var(--line);margin-top:40px;padding:26px 0 40px;color:var(--faint);font-size:.9rem}
footer .cols{display:flex;gap:28px;flex-wrap:wrap;justify-content:space-between}
footer a{color:var(--muted);text-decoration:none}
footer a:hover{color:var(--text)}
.pill{display:inline-block;padding:4px 10px;border-radius:999px;background:var(--card2);color:var(--muted);font-size:.8rem}
.spinner{width:22px;height:22px;border:3px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:spin 1s linear infinite;display:inline-block;vertical-align:middle;margin-right:10px}
@keyframes spin{to{transform:rotate(360deg)}}