* { box-sizing: border-box; }
body { margin: 0; font-family: Arial, sans-serif; background: #f5f7fb; color: #222; }
header, footer { text-align: center; padding: 16px; color: #666; }
main { max-width: 820px; margin: 0 auto; padding: 16px; }
.card { background: #fff; border: 1px solid #e5e7eb; border-radius: 10px; padding: 16px; box-shadow: 0 6px 16px rgba(0,0,0,0.06); }
h1, h2 { margin: 0 0 12px; }
form { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
label { display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: #555; }
input, select, button { padding: 10px 12px; border: 1px solid #d1d5db; border-radius: 8px; background: #fff; color: #111; }
input:focus, select:focus { outline: none; border-color: #60a5fa; box-shadow: 0 0 0 3px rgba(96,165,250,0.25); }
button { background: #16a34a; color: #fff; font-weight: 700; cursor: pointer; transition: filter .15s ease; border: none; }
button:hover { filter: brightness(1.05); }
.inline { display: flex; gap: 8px; align-items: center; }
.inline input { flex: 1; }
.inline select { width: 140px; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin-top: 14px; }
.metric { background: #f9fafb; border: 1px solid #e5e7eb; border-radius: 8px; padding: 12px; }
.metric b { display: block; font-size: 13px; color: #666; margin-bottom: 6px; }
.metric .v { font-size: 20px; font-weight: 800; }
.full { grid-column: 1 / -1; }
.hint, .mini { font-size: 12px; color: #666; }