:root{--text: #6b6375;--text-h: #08060d;--bg: #fff;--border: #e5e4e7;--code-bg: #f4f3ec;--accent: #aa3bff;--accent-bg: rgba(170, 59, 255, .1);--accent-border: rgba(170, 59, 255, .5);--social-bg: rgba(244, 243, 236, .5);--shadow: rgba(0, 0, 0, .1) 0 10px 15px -3px, rgba(0, 0, 0, .05) 0 4px 6px -2px;--sans: system-ui, "Segoe UI", Roboto, sans-serif;--heading: system-ui, "Segoe UI", Roboto, sans-serif;--mono: ui-monospace, Consolas, monospace;font:18px/145% var(--sans);letter-spacing:.18px;color-scheme:light dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (max-width: 1024px){:root{font-size:16px}}@media (prefers-color-scheme: dark){:root{--text: #9ca3af;--text-h: #f3f4f6;--bg: #16171d;--border: #2e303a;--code-bg: #1f2028;--accent: #c084fc;--accent-bg: rgba(192, 132, 252, .15);--accent-border: rgba(192, 132, 252, .5);--social-bg: rgba(47, 48, 58, .5);--shadow: rgba(0, 0, 0, .4) 0 10px 15px -3px, rgba(0, 0, 0, .25) 0 4px 6px -2px}#social .button-icon{filter:invert(1) brightness(2)}}body{margin:0}#root{width:1126px;max-width:100%;margin:0 auto;text-align:center;border-inline:1px solid var(--border);min-height:100svh;display:flex;flex-direction:column;box-sizing:border-box}h1,h2{font-family:var(--heading);font-weight:500;color:var(--text-h)}h1{font-size:56px;letter-spacing:-1.68px;margin:32px 0}@media (max-width: 1024px){h1{font-size:36px;margin:20px 0}}h2{font-size:24px;line-height:118%;letter-spacing:-.24px;margin:0 0 8px}@media (max-width: 1024px){h2{font-size:20px}}p{margin:0}code,.counter{font-family:var(--mono);display:inline-flex;border-radius:4px;color:var(--text-h)}code{font-size:15px;line-height:135%;padding:4px 8px;background:var(--code-bg)}.bmi-calculator{width:100%;max-width:400px;margin:50px auto;padding:20px;border:1px solid #ddd;border-radius:8px;box-shadow:0 2px 10px #0000001a;font-family:Arial,sans-serif;box-sizing:border-box}.bmi-calculator h1{text-align:center;color:#333;margin-bottom:30px}.form{display:flex;flex-direction:column;gap:20px;width:100%}.input-group{display:flex;flex-direction:column;min-width:0}.input-group label{margin-bottom:5px;font-weight:700;color:#555}.input-group input,.input-group select{width:100%;box-sizing:border-box;padding:10px;border:1px solid #ccc;border-radius:4px;font-size:16px}.input-group input:focus{outline:none;border-color:#007bff;box-shadow:0 0 5px #007bff80}.calculate-btn{padding:12px;background-color:#007bff;color:#fff;border:none;border-radius:4px;font-size:16px;cursor:pointer;transition:background-color .3s}.calculate-btn:hover{background-color:#0056b3}.row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}select{width:100%;box-sizing:border-box;padding:10px;border:1px solid #ccc;border-radius:4px;font-size:16px;background:#fff;color:#333}select option{color:#333;background:#fff}@media (max-width: 520px){.row{grid-template-columns:1fr}}.result{margin-top:30px;padding:20px;background-color:#f8f9fa;border-radius:4px;text-align:center}.result h2{color:#28a745;margin-bottom:10px}.result p{color:#666;font-size:18px}