:root{
  --indigo:#4f46e5; --indigo2:#6366f1; --gold:#eab308; --gold2:#b45309;
  --ink:#1f2933; --muted:#64748b; --line:#e6e9ef; --bg:#ffffff; --soft:#f6f8fc;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:'Segoe UI',system-ui,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.55}
a{color:var(--indigo);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}

/* Header */
header.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:var(--ink)}
.brand svg{width:34px;height:34px;flex:none}
.brand b{color:var(--indigo)} .brand span{color:var(--muted);font-weight:700;font-size:12.5px}
.nav-links{margin-left:auto;display:flex;align-items:center;gap:20px}
.nav-links a{color:var(--ink);font-weight:600;font-size:14.5px}
.btn{display:inline-flex;align-items:center;gap:8px;justify-content:center;border:none;border-radius:11px;
  font-weight:800;font-size:14.5px;cursor:pointer;padding:11px 20px;text-decoration:none}
.btn-primary{background:linear-gradient(135deg,var(--indigo),#7c3aed);color:#fff;box-shadow:0 4px 14px rgba(79,70,229,.32)}
.btn-primary:hover{filter:brightness(1.07);text-decoration:none}
.btn-gold{background:linear-gradient(135deg,var(--gold),var(--gold2));color:#fff}
.btn-ghost{background:#fff;border:1px solid var(--line);color:var(--ink)}
.btn-lg{padding:14px 26px;font-size:16px;border-radius:13px}

/* Hero */
.hero{padding:70px 0 40px;text-align:center;background:radial-gradient(1200px 380px at 50% -60px,#eef2ff,transparent)}
.hero h1{font-size:44px;line-height:1.1;margin:0 0 16px;letter-spacing:-1px}
.hero h1 .g{background:linear-gradient(120deg,var(--indigo),var(--gold2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{font-size:19px;color:var(--muted);max-width:680px;margin:0 auto 28px}
.hero-cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.mini{color:var(--muted);font-size:13px;margin-top:14px}

/* Sections */
section{padding:52px 0}
.h2{font-size:30px;text-align:center;margin:0 0 8px;letter-spacing:-.5px}
.sub{text-align:center;color:var(--muted);font-size:16px;margin:0 auto 34px;max-width:640px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:820px){.grid{grid-template-columns:1fr}.hero h1{font-size:34px}}
.card{border:1px solid var(--line);border-radius:16px;padding:20px;background:#fff;transition:transform .12s,box-shadow .12s}
.card:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(15,23,42,.08)}
.card .ico{width:42px;height:42px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:12px;background:#eef2ff}
.card h3{margin:0 0 6px;font-size:16.5px}
.card p{margin:0;color:var(--muted);font-size:14px}

/* Pricing */
.plans{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:820px;margin:0 auto}
@media(max-width:820px){.plans{grid-template-columns:1fr}}
.plan{border:1px solid var(--line);border-radius:18px;padding:26px;background:#fff}
.plan.pro{border:2px solid var(--indigo);box-shadow:0 14px 40px rgba(79,70,229,.16);position:relative}
.plan .tag{position:absolute;top:-12px;right:22px;background:var(--indigo);color:#fff;font-size:11px;font-weight:800;padding:4px 12px;border-radius:999px}
.plan h3{margin:0 0 4px;font-size:20px}
.plan .price{font-size:38px;font-weight:800;margin:6px 0}
.plan .price small{font-size:15px;color:var(--muted);font-weight:600}
.ptable{width:100%;border-collapse:collapse;margin:34px auto 0;max-width:820px}
.ptable th,.ptable td{padding:11px 12px;border-bottom:1px solid var(--line);font-size:14px;text-align:left}
.ptable th{color:var(--muted);text-transform:uppercase;letter-spacing:.4px;font-size:11.5px}
.ptable td.c{text-align:center;font-weight:700}
.ptable .free{color:var(--muted)} .ptable .pro{color:var(--indigo)}

/* Panels (login/dashboard) */
.panel{max-width:520px;margin:40px auto;border:1px solid var(--line);border-radius:18px;padding:30px;background:#fff;box-shadow:0 12px 40px rgba(15,23,42,.06)}
.panel h1{font-size:24px;margin:0 0 6px}
.panel p.lead{color:var(--muted);margin:0 0 22px}
label{display:block;font-weight:700;font-size:13px;margin:14px 0 6px}
input.in{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:11px;font-size:15px}
input.in:focus{outline:none;border-color:var(--indigo);box-shadow:0 0 0 3px rgba(79,70,229,.14)}
.note{font-size:13px;margin-top:12px;line-height:1.5}
.note.ok{color:#15803d} .note.err{color:#b91c1c}
.keybox{display:flex;gap:8px;align-items:center;background:var(--soft);border:1px dashed var(--indigo);border-radius:11px;padding:12px 14px;margin-top:10px;font-weight:800;font-size:16px;color:var(--indigo);word-break:break-all}
.usage-row{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--line);font-size:14px}
.usage-row .n{flex:1}
.bar{width:120px;height:8px;background:#eef1f4;border-radius:5px;overflow:hidden}
.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--indigo),#7c3aed)}
.pill{font-size:11px;font-weight:800;padding:2px 9px;border-radius:999px}
.pill.pro{background:#eef2ff;color:var(--indigo)} .pill.free{background:#f1f5f9;color:var(--muted)}

/* Footer */
footer{border-top:1px solid var(--line);padding:34px 0;color:var(--muted);font-size:13.5px;margin-top:20px}
.foot-in{display:flex;flex-wrap:wrap;gap:16px;align-items:center}
.foot-in .sp{margin-left:auto}