.bm-page { padding: 56px 0 100px; }
.bm-intro { text-align: center; max-width: 56ch; margin: 0 auto 30px; }
.bm-intro .hero__eyebrow { margin-bottom: 18px; }
.bm-intro h1 { font-family: var(--font-display); font-size: clamp(1.8rem, 4vw, 2.4rem); letter-spacing: -0.02em; margin: 0 0 10px; }
.bm-intro p { color: var(--ink-soft); margin: 0; line-height: 1.6; }

.bm-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; }
.bm-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 24px; }
.bm-card__head h2 { font-family: var(--font-display); font-size: 1.15rem; margin: 0 0 18px; }

.bm-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.bm-field { display: flex; flex-direction: column; gap: 6px; }
.bm-field label { font-size: 0.82rem; font-weight: 600; color: var(--ink-soft); }
.bm-field input { border: 2px solid var(--line); border-radius: 12px; padding: 12px 14px; font-family: var(--font-mono); font-size: 1.05rem; font-weight: 600; background: var(--bg); color: var(--ink); transition: border-color var(--dur-fast) var(--ease); }
.bm-field input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(var(--accent-rgb, 11, 122, 85),0.12); }

.bm-result { margin-top: 18px; display: flex; flex-direction: column; gap: 8px; }
.bm-result__row { display: flex; align-items: center; justify-content: space-between; gap: 12px; background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px 16px; }
.bm-result__label { font-size: 0.82rem; font-weight: 600; color: var(--ink-soft); }
.bm-result__value { font-family: var(--font-mono); font-size: 1.5rem; font-weight: 700; }
.bm-result__category { font-size: 0.95rem; font-weight: 700; padding: 6px 14px; border-radius: 999px; }
.bm-result__ideal { font-family: var(--font-mono); font-size: 0.95rem; font-weight: 700; color: var(--ink); }

.bm-gauge { margin-top: 22px; }
.bm-gauge__track { position: relative; height: 14px; border-radius: 999px; overflow: hidden; background: linear-gradient(90deg, #3498db 0%, #2ecc71 25%, #2ecc71 50%, #f1c40f 62%, #e67e22 75%, #e74c3c 100%); }
.bm-gauge__fill { position: absolute; top: 0; left: 0; height: 100%; width: 0%; background: rgba(0,0,0,0.28); transition: width var(--dur-med) var(--ease); }
.bm-gauge__marker { position: absolute; top: -4px; left: 0%; width: 4px; height: 22px; background: #fff; border: 2px solid var(--ink); border-radius: 4px; transform: translateX(-50%); transition: left var(--dur-med) var(--ease); box-shadow: 0 2px 6px rgba(0,0,0,0.3); }
.bm-gauge__labels { display: flex; justify-content: space-between; font-size: 0.7rem; color: var(--ink-soft); margin-top: 8px; }

.bm-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.bm-table th { text-align: left; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-soft); padding: 8px; border-bottom: 1px solid var(--line); }
.bm-table td { padding: 10px 8px; border-bottom: 1px solid var(--line); font-family: var(--font-mono); }
.bm-table tr:last-child td { border-bottom: none; }
.bm-dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; margin-right: 8px; }
.bm-dot--under { background: #3498db; }
.bm-dot--normal { background: #2ecc71; }
.bm-dot--over { background: #f1c40f; }
.bm-dot--obese { background: #e74c3c; }
.bm-note { font-size: 0.8rem; color: var(--ink-soft); line-height: 1.6; margin: 16px 0 0; }

@media (max-width: 820px) {
  .bm-layout { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .bm-fields { grid-template-columns: 1fr; }
}