:root{
  --bg:#f6f8fc; --panel:#ffffff; --panel2:#ffffff; --ink:#0b0d12; --muted:#6b7280;
  --brand:#4fdcd3; --brand2:#3b78f5; --ok:#3ddc97; --warn:#ffcc4d; --bad:#ff6b6b;
  --line:rgba(11,13,18,.09); --radius:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 Montserrat,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
a{color:var(--brand2)}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
header.top{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:12px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem;color:var(--ink);text-decoration:none}
.logo img{width:32px;height:32px}
nav a{color:var(--muted);text-decoration:none;margin-left:18px;font-size:.95rem}
nav a:hover{color:var(--ink)}
@media(max-width:640px){nav a.hide-sm{display:none}}
.btn{display:inline-block;padding:12px 22px;border-radius:999px;font-weight:700;text-decoration:none;border:0;cursor:pointer}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff}
.btn-ghost{border:1px solid var(--line);color:var(--ink)}
.hero{padding:72px 0 48px;text-align:center}
.hero h1{font-size:clamp(2rem,6vw,3.4rem);line-height:1.1;margin:0 0 16px}
.hero h1 span{background:linear-gradient(135deg,var(--brand),var(--brand2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:var(--muted);max-width:620px;margin:0 auto 28px;font-size:1.1rem}
.hero .ctas{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
section{padding:48px 0}
h2{font-size:1.7rem;margin:0 0 20px}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.card h3{margin:6px 0 8px;font-size:1.1rem}
.card p{margin:0;color:var(--muted)}
.icon{font-size:1.6rem}
.plans{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.plan{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.plan.featured{background:var(--panel2);border-color:var(--brand)}
.price{font-size:2.2rem;font-weight:800;margin:8px 0}
.price small{font-size:1rem;color:var(--muted);font-weight:500}
.plan ul{padding-left:18px;color:var(--muted);margin:12px 0 0}
.note{color:var(--muted);font-size:.9rem;margin-top:16px}
.secure{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-top:18px}
.chip{border:1px solid var(--line);border-radius:999px;padding:5px 12px;font-size:.85rem;color:var(--muted)}
dl.biz{display:grid;grid-template-columns:max-content 1fr;gap:8px 20px;margin:0}
dl.biz dt{color:var(--muted)}
dl.biz dd{margin:0}
@media(max-width:560px){dl.biz{grid-template-columns:1fr}dl.biz dd{margin-bottom:8px}}
footer{border-top:1px solid var(--line);padding:32px 0;color:var(--muted);font-size:.9rem;margin-top:32px}
footer .cols{display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between}
footer a{color:var(--muted);margin-right:16px}
mark.todo{background:var(--warn);color:#1a1200;border-radius:4px;padding:0 4px}
/* legal */
.legal{max-width:780px}
.legal h1{font-size:2rem;margin:40px 0 8px}
.legal h2{font-size:1.35rem;margin:40px 0 12px;padding-top:12px;border-top:1px solid var(--line)}
.legal h3{font-size:1.05rem;margin:22px 0 6px}
.legal p,.legal li{color:#2a2f3a}
.toc{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px 22px;margin:20px 0}
.toc a{display:block;padding:3px 0;color:var(--ink);text-decoration:none}
/* pay */
.center{min-height:70vh;display:grid;place-items:center;text-align:center;padding:40px 0}
.status{max-width:460px}
.status .big{font-size:3.4rem}
.spinner{width:46px;height:46px;border-radius:50%;border:4px solid var(--line);border-top-color:var(--brand);animation:spin 1s linear infinite;margin:0 auto 18px}
@keyframes spin{to{transform:rotate(360deg)}}
.hidden{display:none}