:root{--navy:#1b2a63;--navy-deep:#131f4a;--teal:#1f9e94;--ink:#14213d;--muted:#5a6b86;--bg:#fbfaf6;--panel:#fff;--line:#e9e4d8;--shadow:0 1px 2px rgba(20,33,61,.04),0 8px 30px rgba(20,33,61,.06);--radius:14px}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--navy);text-decoration:none}a:hover{color:var(--teal)}h1{font-size:clamp(1.8rem,4vw,2.6rem);font-weight:800;letter-spacing:-.02em}h2{font-size:1.3rem;margin-bottom:.5em}h2,h3{font-weight:700}h3{font-size:1.05rem}.muted{color:var(--muted)}.wrap{max-width:780px;margin:0 auto;padding:0 20px}.appnav{position:-webkit-sticky;position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--line)}.appnav-inner{max-width:780px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;gap:14px}.appnav img{height:30px;width:auto}.appnav .spacer{margin-left:auto}.appnav .who{font-size:.9rem;color:var(--muted)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border-radius:999px;font-weight:600;font-size:.95rem;border:1px solid transparent;cursor:pointer;transition:background .15s}.btn-primary{background:var(--navy);color:#fff}.btn-primary:hover{background:var(--navy-deep);color:#fff}.btn-teal{background:var(--teal);color:#fff}.btn-ghost{background:var(--panel);color:var(--ink);border-color:var(--line)}.btn-ghost:hover{border-color:var(--navy)}.btn:disabled{opacity:.5;cursor:default}.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}.grid{display:grid;grid-gap:16px;gap:16px}.grid.c3{grid-template-columns:repeat(3,1fr)}@media (max-width:720px){.grid.c3{grid-template-columns:1fr}}.section{padding:32px 0}.pill{display:inline-block;padding:3px 10px;border-radius:999px;font-size:.76rem;font-weight:700;background:#e8f5f3;color:#0f6b63;border:1px solid #cbe9e5}.pill.grey{background:#eef0f4;color:var(--muted);border-color:var(--line)}.pill.warn{background:#fff2df;color:#8a5a12;border-color:#f0d9a8}input[type=number],select,textarea{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff;color:var(--ink);resize:vertical}label{display:block;font-size:.85rem;margin-bottom:6px}.err,label{font-weight:600}.err{color:#b3261e}.ok{color:#0f6b63;font-weight:600}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.84em}pre.cmd{background:#0f1b3d;color:#dbe4ff;padding:14px 16px;border-radius:10px;overflow-x:auto;font-size:.82rem;white-space:pre-wrap;word-break:break-all}.kv{display:flex;justify-content:space-between;padding:5px 0;border-bottom:1px solid var(--line);font-size:.92rem}.kv:last-child{border-bottom:0}.big{font-size:1.9rem;font-weight:800;letter-spacing:-.02em}.result{white-space:pre-wrap;background:#fcfdfd;border:1px solid var(--line);border-radius:10px;padding:14px}