:root{ --bg:#f8fafc; --fg:#0f172a; --card:#ffffff; --muted:#6b7280; --accent:#2563eb; --line:#e5e7eb; }
:root.dark{ --bg:#0b1220; --fg:#e5e7eb; --card:#0f172a; --muted:#9ca3af; --accent:#60a5fa; --line:#1f2937; }
*{box-sizing:border-box} body{margin:0;font-family:Inter,system-ui,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--fg)}
.container{max-width:1100px;margin:0 auto;padding:0 20px}
.site-header{position:sticky;top:0;background:var(--card);border-bottom:1px solid var(--line);z-index:30}
.header-wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:inherit}
.logo{width:28px;height:28px}.brand-name{font-weight:700}.nav{display:flex;align-items:center;gap:14px}
.nav a{color:inherit;text-decoration:none;font-weight:600;opacity:.9}.nav a.active{color:var(--accent)}
.btn{border:none;border-radius:10px;padding:10px 14px;cursor:pointer;font-weight:600}
.btn.primary{background:var(--accent);color:#fff}.btn.secondary{background:transparent;border:1px solid var(--line);color:inherit}
.hero{padding:30px 0 10px}.muted{color:var(--muted)}.grid.two{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.grid.two.tight{grid-template-columns:1fr 1fr}@media (max-width: 860px){.grid.two{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px}
.field{display:grid;gap:6px;margin-bottom:10px}.field input,.field textarea{padding:10px;border:1px solid var(--line);border-radius:8px;width:100%;background:transparent;color:inherit}
.results{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px}
.results div{display:flex;align-items:center;justify-content:space-between;border:1px solid var(--line);border-radius:10px;padding:10px}
.site-footer{border-top:1px solid var(--line);padding:20px 0;margin-top:30px}.footer-wrap{display:flex;align-items:center;justify-content:space-between}