/* APICostCalc — light modern dev-tool design system */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@500;600&display=swap');
:root{
  --bg:#ffffff;--bg2:#f7f8fb;--ink:#0f1222;--ink-soft:#2a3047;--muted:#5b6178;
  --line:#e7e9f2;--line2:#dfe2ee;--accent:#6366f1;--accent2:#8b5cf6;--accent-ink:#fff;
  --green:#0ea571;--green-bg:#e7f8f0;--amber:#b9770a;--amber-bg:#fdf3e2;
  --card:#ffffff;--shadow:0 1px 3px rgba(15,18,34,.05),0 10px 34px -18px rgba(99,102,241,.28);
  --grad:linear-gradient(95deg,#6366f1,#8b5cf6);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased}
.mono{font-family:"JetBrains Mono",ui-monospace,monospace;font-variant-numeric:tabular-nums}
h1,h2,h3,.logo{font-family:"Space Grotesk",Inter,sans-serif;letter-spacing:-.02em}
a{color:var(--accent);text-decoration:none}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}
/* nav */
.nav{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-in{max-width:1080px;margin:0 auto;padding:13px 22px;display:flex;align-items:center;gap:18px}
.logo{display:flex;align-items:center;gap:9px;font-weight:700;font-size:18px;color:var(--ink)}
.logo .mk{width:27px;height:27px;flex:none}
.nav-links{display:flex;gap:20px;margin-left:auto;align-items:center}
.nav-links a{color:var(--muted);font-size:14px;font-weight:500}
.nav-links a:hover{color:var(--ink)}
.nav-burger{display:none;margin-left:auto;background:none;border:1px solid var(--line2);border-radius:9px;padding:5px 10px;font-size:18px;cursor:pointer;color:var(--ink)}
/* hero */
.hero{text-align:center;padding:52px 22px 30px}
.hero h1{font-size:42px;font-weight:700;margin:0 0 14px;line-height:1.08}
.hero h1 .g{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero p{font-size:17px;color:var(--muted);max-width:580px;margin:0 auto 22px}
.search{display:flex;max-width:520px;margin:0 auto;background:var(--card);border:1px solid var(--line2);border-radius:14px;box-shadow:var(--shadow);overflow:hidden}
.search input{flex:1;border:0;padding:15px 18px;font-size:15px;color:var(--ink);outline:none;background:transparent}
.search button{border:0;background:var(--grad);color:#fff;padding:0 22px;font-weight:600;cursor:pointer;font-family:inherit;font-size:15px}
.pills{display:flex;flex-wrap:wrap;gap:9px;justify-content:center;margin:20px auto 0;max-width:680px}
.pill{display:inline-flex;align-items:center;gap:6px;padding:8px 15px;border:1px solid var(--line2);border-radius:30px;font-size:13px;font-weight:500;color:var(--ink-soft);background:var(--card);transition:.15s}
.pill:hover{border-color:var(--accent);color:var(--accent);box-shadow:var(--shadow)}
/* sections */
section{padding:30px 0}
.sec-h{display:flex;align-items:baseline;gap:12px;margin:0 0 16px}
.sec-h h2{font-size:24px;margin:0}
.sec-h .more{margin-left:auto;font-size:14px;font-weight:600}
.lead{color:var(--muted);font-size:15px;margin:-6px 0 18px}
/* cards / grid */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.acard{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px;transition:.15s;color:var(--ink)}
.acard:hover{border-color:var(--accent);box-shadow:var(--shadow);transform:translateY(-2px)}
.acard .top{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.acard .ico{width:34px;height:34px;border-radius:9px;background:var(--bg2);display:flex;align-items:center;justify-content:center;font-weight:700;font-family:"Space Grotesk";color:var(--accent);flex:none}
.acard h3{font-size:16px;margin:0}
.acard .cat{font-size:12px;color:var(--muted)}
.acard .desc{font-size:13px;color:var(--muted);flex:1;margin:2px 0 12px}
.acard .meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.acard .price{font-family:"JetBrains Mono",monospace;font-size:13px;font-weight:600;color:var(--ink)}
.badge{font-size:11px;font-weight:600;padding:2px 9px;border-radius:20px}
.badge.free{background:var(--green-bg);color:var(--green)}
.badge.paid{background:var(--bg2);color:var(--muted)}
.acard .go{margin-top:10px;font-size:13px;font-weight:600;color:var(--accent)}
/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.step{background:var(--bg2);border:1px solid var(--line);border-radius:16px;padding:20px}
.step .n{width:30px;height:30px;border-radius:9px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-family:"Space Grotesk";margin-bottom:10px}
.step h3{font-size:16px;margin:0 0 4px}.step p{font-size:13px;color:var(--muted);margin:0}
/* calculator */
.calc{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:var(--shadow)}
.row{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:12px}
.field{flex:1;min-width:150px}
label{display:block;font-size:12px;color:var(--muted);margin-bottom:6px;font-weight:600}
input,select{width:100%;padding:12px;background:var(--bg2);border:1px solid var(--line2);border-radius:11px;color:var(--ink);font-size:15px;font-variant-numeric:tabular-nums;font-family:inherit;transition:.15s}
input:focus,select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(99,102,241,.16);background:#fff}
.out{margin-top:6px;padding:18px;background:var(--bg2);border:1px solid var(--line2);border-radius:14px}
.costrow{display:flex;flex-wrap:wrap;gap:22px;align-items:flex-end}
.costrow .c b{display:block;font-size:22px;font-weight:700;font-family:"JetBrains Mono",monospace}
.costrow .c span{font-size:12px;color:var(--muted)}
.bigcost{font-size:34px;font-weight:700;font-family:"JetBrains Mono",monospace;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.note{font-size:13px;color:var(--ink-soft);border-left:3px solid var(--accent);padding:9px 13px;margin-top:12px;background:var(--bg2);border-radius:0 8px 8px 0}
.tprice{width:100%;border-collapse:collapse;font-size:14px}
.tprice th,.tprice td{text-align:right;padding:10px;border-bottom:1px solid var(--line)}
.tprice th:first-child,.tprice td:first-child{text-align:left}
.tprice th{color:var(--muted);font-weight:600;font-size:12px}
.tprice td.num{font-family:"JetBrains Mono",monospace}
.tprice tbody tr:hover{background:var(--bg2)}
.tprice .best{color:var(--green);font-weight:700}
/* disclaimer / prose */
.disc{font-size:13px;color:var(--ink-soft);border-left:3px solid var(--amber);padding:10px 14px;background:var(--amber-bg);border-radius:0 10px 10px 0;margin:16px 0}
.prose{font-size:16px;line-height:1.75;color:var(--ink-soft)}
.prose h2{font-size:22px;margin:28px 0 8px;color:var(--ink)}
.prose h3{font-size:17px;margin:20px 0 4px;color:var(--ink)}
.prose code{background:var(--bg2);border:1px solid var(--line2);border-radius:6px;padding:2px 6px;font-size:.9em;font-family:"JetBrains Mono",monospace}
.codeblock{background:#0f1222;color:#e6e9f5;border-radius:12px;padding:16px 18px;font-family:"JetBrains Mono",monospace;font-size:13px;line-height:1.7;overflow-x:auto;margin:12px 0}
.codeblock .c{color:#8b93b8}
.faq details{border:1px solid var(--line);border-radius:12px;padding:13px 16px;margin:8px 0;background:var(--card)}
.faq summary{cursor:pointer;font-weight:600;font-size:15px;color:var(--ink)}
.faq p{color:var(--muted);margin:8px 0 2px}
.btn{display:inline-block;padding:12px 22px;border-radius:12px;font-weight:600;font-size:15px;background:var(--grad);color:#fff;border:0;cursor:pointer}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line2)}
/* breadcrumb */
.crumb{font-size:13px;color:var(--muted);padding:16px 0 0}
.crumb a{color:var(--muted)}
/* footer */
footer{background:var(--bg2);border-top:1px solid var(--line);margin-top:40px;padding:34px 0}
.foot-grid{display:flex;flex-wrap:wrap;gap:30px;justify-content:space-between}
.foot-grid h4{font-size:13px;margin:0 0 10px;color:var(--ink)}
.foot-grid a{display:block;color:var(--muted);font-size:13px;margin-bottom:6px}
.foot-bottom{margin-top:24px;font-size:12px;color:var(--muted)}
@media(max-width:760px){
  .nav-links{display:none}.nav-burger{display:inline-flex}
  .nav-links.open{display:flex;position:absolute;top:100%;left:0;right:0;flex-direction:column;background:#fff;border-bottom:1px solid var(--line);padding:8px 22px;gap:0;margin:0}
  .nav-links.open a{padding:11px 0;border-top:1px solid var(--line)}
  .hero h1{font-size:30px}.steps{grid-template-columns:1fr}
}