*{box-sizing:border-box}
:root{--ink:#0f172a;--mut:#475569;--line:#e2e8f0;--bg:#f8fafc;--tealD:#0f766e;--teal:#14b8a6;--amber:#f59e0b;--card:#fff}
body{margin:0;font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--tealD)}
.top{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;max-width:1080px;margin:auto}
.brand{display:flex;gap:8px;align-items:center;font-weight:800;font-size:20px;text-decoration:none;color:var(--ink)}
.top nav a{margin-left:16px;text-decoration:none;color:var(--mut);font-size:15px}
main{max-width:1080px;margin:auto;padding:0 16px}
.hero{padding:28px 0 8px;text-align:center}
h1{font-size:clamp(28px,5vw,46px);line-height:1.1;margin:8px 0 10px;letter-spacing:-.02em}
h1 span{color:var(--tealD)}
.sub{color:var(--mut);max-width:620px;margin:0 auto 22px;font-size:17px}
form{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px;max-width:720px;margin:auto;text-align:left;box-shadow:0 6px 24px rgba(15,23,42,.06)}
label{display:block;font-weight:600;font-size:14px;margin:4px 0 6px}
label small{font-weight:400;color:var(--mut)}
input{width:100%;font:inherit;padding:12px 14px;border:1px solid #cbd5e1;border-radius:10px;background:#fff}
input:focus{outline:3px solid #99f6e4;border-color:var(--teal)}
.row{display:grid;grid-template-columns:1fr 150px;gap:12px;margin-top:10px}
@media(max-width:560px){.row{grid-template-columns:1fr}}
#go{margin-top:14px;width:100%;font:inherit;font-weight:700;font-size:17px;padding:13px;border:0;border-radius:10px;background:var(--tealD);color:#fff;cursor:pointer}
#go:disabled{opacity:.6;cursor:wait}
.examples{margin-top:12px;font-size:13px;color:var(--mut);display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.examples button{font:inherit;font-size:13px;border:1px solid var(--line);background:#f1f5f9;border-radius:999px;padding:4px 10px;cursor:pointer}
.status{max-width:720px;margin:18px auto;padding:14px 16px;border-radius:12px;background:#ecfeff;border:1px solid #a5f3fc}
.status.err{background:#fef2f2;border-color:#fecaca}
.spin{display:inline-block;width:14px;height:14px;border:2px solid #0e7490;border-right-color:transparent;border-radius:50%;animation:s 1s linear infinite;margin-right:8px;vertical-align:-2px}
@keyframes s{to{transform:rotate(360deg)}}
.plan{max-width:1080px;margin:18px auto 8px;color:var(--mut);font-size:14px}
.plan b{color:var(--ink)}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:10px 0}
@media(max-width:900px){.cards{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px;display:flex;flex-direction:column;gap:8px}
.tag{font-size:12px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;padding:3px 8px;border-radius:6px;align-self:flex-start}
.t-cheap{background:#ccfbf1;color:#115e59}.t-rev{background:#fef3c7;color:#92400e}.t-used{background:#e0e7ff;color:#3730a3}
.card h3{font-size:16px;margin:0;line-height:1.35}
.price{font-size:26px;font-weight:800}
.meta{font-size:14px;color:var(--mut)}
.stars{color:#b45309;font-weight:700}
.note{font-size:14px;background:#f8fafc;border-radius:8px;padding:8px 10px}
.btn{display:block;text-align:center;padding:11px;border-radius:10px;background:var(--ink);color:#fff;text-decoration:none;font-weight:700;margin-top:auto}
.empty{color:var(--mut);font-size:14px}
.links a{display:inline-block;margin:4px 8px 0 0;font-size:14px}
.ok{font-size:12px;color:#15803d}
details{margin:6px 0 18px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 14px}
details summary{cursor:pointer;font-weight:600}
details li{margin:4px 0;font-size:14px}
.how{max-width:760px;margin:40px auto}
.how li{margin:8px 0}
.fine{font-size:13px;color:var(--mut)}
footer{text-align:center;color:var(--mut);font-size:13px;padding:30px 16px}
.prose{max-width:760px;margin:20px auto 40px}
.thumb{width:100%;height:150px;object-fit:contain;background:#fff;border-radius:10px}