* { margin:0; padding:0; box-sizing:border-box; }
:root { --bg:#f1f5f9; --white:#fff; --sky:#0284c7; --sky-dark:#0369a1; --dark:#0f172a; --text:#334155; --dim:#94a3b8; --border:#e2e8f0; --green:#16a34a; --red:#dc2626; }
body { font-family:'Figtree',sans-serif; background:var(--bg); color:var(--text); min-height:100vh; }
.container { max-width:960px; margin:0 auto; padding:0 20px; }

.nav { background:var(--white); border-bottom:1px solid var(--border); }
.nav-inner { display:flex; align-items:center; justify-content:space-between; height:56px; }
.brand { text-decoration:none; color:var(--dark); font-size:1.1rem; font-weight:600; }
.brand i { color:var(--sky); margin-right:4px; }
.brand b { color:var(--sky); }
.user-chip { font-size:0.8rem; background:rgba(2,132,199,0.08); color:var(--sky); padding:6px 14px; border-radius:100px; font-weight:600; }

.main { padding:40px 0 60px; }
.intro { text-align:center; margin-bottom:24px; }
.intro h1 { font-size:2rem; font-weight:800; color:var(--dark); }
.hl { color:var(--sky); }
.intro p { color:var(--dim); font-size:0.9rem; margin-top:6px; }

.grid-3 { display:grid; grid-template-columns:repeat(3,1fr); gap:14px; margin-bottom:14px; }
.card { background:var(--white); border:1px solid var(--border); border-radius:14px; padding:20px; margin-bottom:14px; }
.card h3 { font-size:0.95rem; font-weight:700; color:var(--dark); margin-bottom:10px; }
.card h3 i { color:var(--sky); margin-right:6px; }
.card p.hint { font-size:0.8rem; color:var(--dim); margin-bottom:8px; }
.mini-form { display:flex; gap:8px; margin-top:10px; }
.mini-form input { flex:1; padding:8px 12px; border:1px solid var(--border); border-radius:8px; font-size:0.85rem; outline:none; }
textarea { width:100%; padding:10px; border:1px solid var(--border); border-radius:8px; font-family:monospace; font-size:0.82rem; outline:none; resize:vertical; margin-bottom:10px; }
textarea:focus,.mini-form input:focus { border-color:var(--sky); }

.btn { padding:10px 18px; background:var(--sky); color:white; border:none; border-radius:8px; font-weight:600; font-size:0.82rem; cursor:pointer; font-family:inherit; }
.btn:hover { background:var(--sky-dark); }
.btn.full { width:100%; }
.btn.sm { white-space:nowrap; }
.flag-row { display:flex; gap:10px; }
.flag-row input { flex:1; padding:10px 14px; border:1px solid var(--border); border-radius:8px; font-size:0.9rem; outline:none; }

.ok { margin-top:10px; padding:10px; background:rgba(22,163,74,0.05); border:1px solid rgba(22,163,74,0.15); border-radius:8px; color:var(--green); font-size:0.8rem; }
.ok pre { white-space:pre-wrap; word-break:break-all; font-size:0.78rem; }
.fail { margin-top:10px; padding:10px; background:rgba(220,38,38,0.05); border:1px solid rgba(220,38,38,0.15); border-radius:8px; color:var(--red); font-size:0.8rem; }
.fail pre { white-space:pre-wrap; }

@media(max-width:768px) { .grid-3{grid-template-columns:1fr;} .flag-row{flex-direction:column;} }