:root{--bg-primary: #f8fafc;--bg-surface: #ffffff;--bg-surface-elevated: #ffffff;--bg-surface-subtle: #f1f5f9;--bg-surface-hover: #e2e8f0;--border-subtle: #e2e8f0;--border-medium: #cbd5e1;--border-strong: #94a3b8;--border-focus: #3b82f6;--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #64748b;--text-inverse: #ffffff;--brand-primary: #2563eb;--brand-primary-hover: #1d4ed8;--brand-primary-light: #eff6ff;--brand-primary-border: #bfdbfe;--accent-emerald: #059669;--accent-emerald-bg: #ecfdf5;--accent-emerald-border: #a7f3d0;--accent-amber: #d97706;--accent-amber-bg: #fffbeb;--accent-amber-border: #fde68a;--accent-rose: #e11d48;--accent-rose-bg: #fff1f2;--accent-rose-border: #fecdd3;--accent-indigo: #4f46e5;--accent-indigo-bg: #eef2ff;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;--font-heading: "Outfit", "Inter", sans-serif;--font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 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#cbd5e1;--text-muted: #94a3b8;--text-inverse: #0f172a;--brand-primary: #3b82f6;--brand-primary-hover: #60a5fa;--brand-primary-light: #172554;--brand-primary-border: #1e3a8a;--accent-emerald: #10b981;--accent-emerald-bg: #064e3b;--accent-emerald-border: #065f46;--accent-amber: #f59e0b;--accent-amber-bg: #78350f;--accent-amber-border: #92400e;--accent-rose: #f43f5e;--accent-rose-bg: #881337;--accent-rose-border: #9f1239;--accent-indigo: #818cf8;--accent-indigo-bg: #312e81;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .4), 0 2px 4px -2px rgba(0, 0, 0, .3);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .5), 0 4px 6px -4px rgba(0, 0, 0, .4);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .6), 0 8px 10px -6px rgba(0, 0, 0, .5)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color var(--transition-normal),color var(--transition-normal)}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:700;line-height:1.25;color:var(--text-primary);letter-spacing:-.02em}h1{font-size:clamp(1.875rem,4vw,2.75rem);font-weight:800;margin-bottom:.75rem}h2{font-size:clamp(1.5rem,3vw,2rem);margin-top:2rem;margin-bottom:1rem}h3{font-size:clamp(1.2rem,2vw,1.45rem);margin-top:1.5rem;margin-bottom:.75rem}p{margin-bottom:1.15rem;color:var(--text-secondary);font-size:1rem;line-height:1.7}a{color:var(--brand-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--brand-primary-hover);text-decoration:underline}code{font-family:var(--font-mono);background:var(--bg-surface-subtle);padding:.15rem .4rem;border-radius:var(--radius-sm);font-size:.9em;color:var(--brand-primary);border:1px solid var(--border-subtle)}pre{font-family:var(--font-mono);background:var(--bg-surface-subtle);padding:1.25rem;border-radius:var(--radius-md);border:1px solid var(--border-subtle);overflow-x:auto;margin:1.25rem 0}ul,ol{margin-bottom:1.25rem;padding-left:1.5rem;color:var(--text-secondary)}li{margin-bottom:.5rem;line-height:1.6}.table-responsive{width:100%;overflow-x:auto;margin:1.5rem 0;border-radius:var(--radius-md);border:1px solid var(--border-subtle);box-shadow:var(--shadow-sm);background:var(--bg-surface)}table{width:100%;border-collapse:collapse;text-align:left;font-size:.95rem}th,td{padding:.85rem 1.15rem;border-bottom:1px solid 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1.5rem}}@media(max-width:480px){.container{padding-left:1rem;padding-right:1rem}.site-logo{font-size:1.2rem}.logo-badge{width:32px;height:32px}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideInRight{0%{transform:translate(100%)}to{transform:translate(0)}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.65rem 1.25rem;font-family:var(--font-heading);font-size:.95rem;font-weight:600;border-radius:var(--radius-md);border:1px solid transparent;cursor:pointer;transition:all var(--transition-fast);text-decoration:none;line-height:1.4;white-space:nowrap;min-height:44px}.btn:hover{text-decoration:none}.btn-primary{background:var(--brand-primary);color:#fff}.btn-primary:hover{background:var(--brand-primary-hover);box-shadow:0 4px 12px 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.85rem;font-size:.85rem;border-radius:var(--radius-sm);min-height:36px}.form-group{display:flex;flex-direction:column;gap:.45rem;margin-bottom:1.25rem}.form-label{font-size:.9rem;font-weight:600;color:var(--text-primary);display:flex;justify-content:space-between;align-items:center}.form-label-hint{font-size:.8rem;color:var(--text-muted);font-weight:400}.input-wrapper{position:relative;display:flex;align-items:center}.form-input,.form-select,.form-textarea{width:100%;padding:.75rem 1rem;font-family:var(--font-sans);font-size:1rem;background:var(--bg-surface);color:var(--text-primary);border:1px solid var(--border-medium);border-radius:var(--radius-md);transition:all 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var(--transition-normal);text-decoration:none;position:relative}.calc-card:hover{border-color:var(--brand-primary);box-shadow:var(--shadow-md);transform:translateY(-3px);text-decoration:none}.calc-card-badge{display:inline-flex;align-items:center;padding:.2rem .6rem;background:var(--bg-surface-subtle);color:var(--text-muted);font-size:.75rem;font-weight:600;text-transform:uppercase;border-radius:var(--radius-full);margin-bottom:.75rem;width:fit-content}.calc-card-title{font-size:1.25rem;font-weight:700;color:var(--text-primary);margin-bottom:.5rem}.calc-card-desc{font-size:.9rem;color:var(--text-secondary);line-height:1.5;margin-bottom:1.5rem;flex-grow:1}.calc-card-action{display:flex;align-items:center;justify-content:space-between;font-size:.9rem;font-weight:600;color:var(--brand-primary)}.faq-container{display:flex;flex-direction:column;gap:.75rem;margin:1.5rem 0}.faq-item{background:var(--bg-surface);border:1px solid 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var(--brand-primary-border);color:var(--text-primary)}.alert-warning{background:var(--accent-amber-bg);border:1px solid var(--accent-amber-border);color:var(--text-primary)}.search-modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172aa6;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:100;display:flex;align-items:flex-start;justify-content:center;padding:8vh 1rem 2rem;animation:fadeIn .15s ease-out}.search-modal{width:100%;max-width:620px;max-height:80vh;background:var(--bg-surface);border:1px solid var(--border-medium);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);overflow:hidden;display:flex;flex-direction:column}.search-modal-input-bar{display:flex;align-items:center;gap:.75rem;padding:1rem 1.25rem;border-bottom:1px solid 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var(--brand-primary-border);border-radius:var(--radius-lg);padding:1.5rem;text-align:center;margin-bottom:1.5rem}.result-main-label{font-size:.875rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--brand-primary);margin-bottom:.35rem}.result-main-value{font-size:clamp(1.85rem,3.5vw,2.75rem);font-weight:800;font-family:var(--font-heading);color:var(--text-primary);line-height:1.1;word-break:break-word}.result-main-subtext{font-size:.875rem;color:var(--text-secondary);margin-top:.5rem}.result-metrics-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:1.5rem}.metric-box{background:var(--bg-surface-subtle);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:1rem}.metric-label{font-size:.8rem;color:var(--text-muted);margin-bottom:.25rem}.metric-value{font-size:1.15rem;font-weight:700;color:var(--text-primary);font-family:var(--font-heading)}.breakdown-bar-container{margin:1.25rem 0}.breakdown-bar{display:flex;height:14px;border-radius:var(--radius-full);overflow:hidden;background:var(--bg-surface-subtle)}.breakdown-segment{height:100%;transition:width var(--transition-normal)}.breakdown-legend{display:flex;flex-wrap:wrap;gap:1rem;margin-top:.75rem;font-size:.85rem}.legend-item{display:flex;align-items:center;gap:.4rem}.legend-dot{width:10px;height:10px;border-radius:50%}.health-status-badge{display:inline-flex;align-items:center;gap:.4rem;padding:.35rem .85rem;border-radius:var(--radius-full);font-weight:700;font-size:.9rem}.health-underweight{background:#e0f2fe;color:#0284c7}.health-normal{background:var(--accent-emerald-bg);color:var(--accent-emerald)}.health-overweight{background:var(--accent-amber-bg);color:var(--accent-amber)}.health-obese{background:var(--accent-rose-bg);color:var(--accent-rose)}.slider-group{display:flex;flex-direction:column;gap:.5rem;margin-bottom:1.25rem}.slider-track{width:100%;height:8px;background:var(--bg-surface-subtle);border-radius:var(--radius-full);outline:none;-webkit-appearance:none;cursor:pointer}.slider-track::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;border-radius:50%;background:var(--brand-primary);border:2px solid #ffffff;box-shadow:0 2px 6px #00000040;cursor:pointer;transition:transform var(--transition-fast)}.slider-track::-webkit-slider-thumb:hover{transform:scale(1.15)}.calculator-article-content{max-width:var(--max-width-article);margin:3rem 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0}.worked-example-step{display:flex;align-items:flex-start;gap:.75rem;margin-bottom:.75rem;font-size:.95rem}.step-number{display:flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:50%;background:var(--brand-primary);color:#fff;font-size:.75rem;font-weight:700;flex-shrink:0}.result-toolbar{display:flex;align-items:center;justify-content:flex-end;gap:.5rem;margin-top:1rem}@media(max-width:960px){.calculator-layout{grid-template-columns:1fr;gap:1.5rem;margin:1.25rem 0 2.5rem}.calc-results-panel{position:static;order:2}.calc-interactive-panel{order:1}}@media(max-width:600px){.calc-interactive-panel,.calc-results-panel,.calc-section-box{padding:1.25rem;border-radius:var(--radius-lg)}.result-main-card{padding:1.25rem 1rem}.result-metrics-grid{grid-template-columns:1fr;gap:.75rem}.calc-actions .btn{flex:1;min-width:120px;justify-content:center}}