:root{--primary:#4f46e5;--primary-dark:#4338ca;--primary-light:#eef2ff;--primary-border:#c7d2fe;--text:#111827;--text-secondary:#4b5563;--text-muted:#9ca3af;--bg:#ffffff;--bg-secondary:#f9fafb;--bg-tertiary:#f3f4f6;--border:#e5e7eb;--success:#059669;--success-bg:#ecfdf5;--success-border:#86efac;--warning:#d97706;--warning-bg:#fffbeb;--danger:#dc2626;--danger-bg:#fef2f2;--info:#0284c7;--info-bg:#f0f9ff;--shadow-sm:0 1px 2px 0 rgb(0 0 0 / 0.05);--shadow:0 1px 3px 0 rgb(0 0 0 / 0.1),0 1px 2px -1px rgb(0 0 0 / 0.1);--shadow-md:0 4px 6px -1px rgb(0 0 0 / 0.1),0 2px 4px -2px rgb(0 0 0 / 0.1);--shadow-lg:0 10px 15px -3px rgb(0 0 0 / 0.1),0 4px 6px -4px rgb(0 0 0 / 0.1);--radius-sm:4px;--radius:8px;--radius-lg:12px;--radius-xl:16px;--radius-full:9999px;--header-height:64px;--container:1280px;--font:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif}:root[data-theme="dark"]{--primary:#818cf8;--primary-dark:#6366f1;--primary-light:rgba(99,102,241,0.15);--primary-border:rgba(99,102,241,0.3);--text:#f1f5f9;--text-secondary:#94a3b8;--text-muted:#64748b;--bg:#0f172a;--bg-secondary:#1e293b;--bg-tertiary:#334155;--border:#334155;--success:#34d399;--success-bg:rgba(52,211,153,0.1);--success-border:rgba(52,211,153,0.3);--warning:#fbbf24;--warning-bg:rgba(251,191,36,0.1);--danger:#f87171;--danger-bg:rgba(248,113,113,0.1);--info:#38bdf8;--info-bg:rgba(56,189,248,0.1);--shadow-sm:0 1px 2px 0 rgb(0 0 0 / 0.3);--shadow:0 1px 3px 0 rgb(0 0 0 / 0.4),0 1px 2px -1px rgb(0 0 0 / 0.3);--shadow-md:0 4px 6px -1px rgb(0 0 0 / 0.4),0 2px 4px -2px rgb(0 0 0 / 0.3);--shadow-lg:0 10px 15px -3px rgb(0 0 0 / 0.5),0 4px 6px -4px rgb(0 0 0 / 0.4);color-scheme:dark}:root[data-theme="dark"] .cat-health{background:rgba(239,68,68,0.15);color:#fca5a5}:root[data-theme="dark"] .cat-finance{background:rgba(22,163,74,0.15);color:#86efac}:root[data-theme="dark"] .cat-math{background:rgba(37,99,235,0.15);color:#93c5fd}:root[data-theme="dark"] .cat-conversion{background:rgba(124,58,237,0.15);color:#c4b5fd}:root[data-theme="dark"] .cat-statistics{background:rgba(234,88,12,0.15);color:#fdba74}:root[data-theme="dark"] .cat-physics{background:rgba(5,150,105,0.15);color:#6ee7b7}:root[data-theme="dark"] .cat-chemistry{background:rgba(147,51,234,0.15);color:#d8b4fe}:root[data-theme="dark"] .cat-biology{background:rgba(101,163,13,0.15);color:#bef264}:root[data-theme="dark"] .cat-sports{background:rgba(225,29,72,0.15);color:#fda4af}:root[data-theme="dark"] .cat-construction{background:rgba(217,119,6,0.15);color:#fcd34d}:root[data-theme="dark"] .cat-everyday{background:rgba(2,132,199,0.15);color:#7dd3fc}:root[data-theme="dark"] .cat-food{background:rgba(202,138,4,0.15);color:#fde047}:root[data-theme="dark"] .cat-other{background:rgba(71,85,105,0.15);color:#cbd5e1}:root[data-theme="dark"] .cat-business{background:rgba(180,83,9,0.15);color:#fcd34d}:root[data-theme="dark"] .hero{background:linear-gradient(135deg,#0f172a 0%,#312e81 55%,#155e75 100%)}:root[data-theme="dark"] .site-footer{background:#020617}:root[data-theme="dark"] .formula-box code{color:#a5b4fc}:root[data-theme="dark"] .info-box{border-color:rgba(56,189,248,0.3)}:root[data-theme="dark"] .bmi-marker{background:var(--text);border-color:var(--bg)}:root[data-theme="dark"] .form-select{background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%2394a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e")}:root[data-theme="dark"] .drawer-overlay{background:rgb(0 0 0 / 0.7)}:root[data-theme="dark"] .viz-bar-track{background:rgba(255,255,255,0.06)}:root[data-theme="dark"] .viz-table th{background:rgba(255,255,255,0.04)}:root[data-theme="dark"] .viz-table tr:hover td{background:rgba(255,255,255,0.03)}:root[data-theme="dark"] .viz-gauge{background:rgba(255,255,255,0.06)}:root[data-theme="dark"] .viz-timeline::before{background:rgba(255,255,255,0.1)}:root[data-theme="dark"] .viz-timeline-dot{background:var(--bg-secondary);border-color:rgba(255,255,255,0.15)}:root[data-theme="dark"] .show-work{background:rgba(255,255,255,0.04)}:root[data-theme="dark"] .viz-tab{color:var(--text-muted)}:root[data-theme="dark"] .viz-tab:hover{color:var(--text)}:root[data-theme="dark"] .viz-tab.active{color:var(--primary)}.theme-loaded,.theme-loaded *,.theme-loaded *::before,.theme-loaded *::after{transition:background-color 0.3s ease,color 0.2s ease,border-color 0.3s ease,box-shadow 0.3s ease !important}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{font-family:var(--font);font-size:16px;line-height:1.6;color:var(--text);background:var(--bg-secondary);min-height:100vh;display:flex;flex-direction:column}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}img,svg{display:block;max-width:100%}input,select,textarea,button{font-family:inherit;font-size:inherit}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.25;color:var(--text)}h1{font-size:clamp(1.75rem,4vw,2.5rem)}h2{font-size:clamp(1.35rem,3vw,1.875rem)}h3{font-size:1.25rem}h4{font-size:1.125rem}p{color:var(--text-secondary);line-height:1.7}.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}@media (min-width:640px){.container{padding:0 32px}}@media (min-width:1024px){.container{padding:0 48px}}main{flex:1}.site-header{position:sticky;top:0;z-index:100;height:var(--header-height);background:var(--bg);border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm)}.header-inner{display:flex;align-items:center;height:100%;gap:8px}.logo{display:flex;align-items:center;gap:8px;font-weight:800;font-size:0.9375rem;color:var(--text);text-decoration:none;flex-shrink:0;margin-right:4px;letter-spacing:-0.02em}.logo:hover{text-decoration:none;color:var(--primary)}.logo-text{white-space:nowrap}.logo-icon{width:30px;height:30px;background:var(--primary);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:white;font-size:1rem;font-weight:800;flex-shrink:0}.main-nav{display:none;align-items:center;gap:1px;flex:1}@media (min-width:1024px){.main-nav{display:flex}}.nav-item{position:relative}.nav-link{display:flex;align-items:center;gap:3px;padding:6px 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.dropdown,.dropdown-more{left:auto;right:0;transform:translateY(-6px)}.nav-item:last-child:hover .dropdown,.nav-item:hover .dropdown-more,.nav-item.open:last-child .dropdown,.nav-item.open .dropdown-more{transform:translateY(0)}.dropdown-inner{padding:8px}.dropdown-grid{display:grid;grid-template-columns:1fr 1fr;gap:2px}.dropdown-grid-1col{grid-template-columns:1fr}.dropdown-link{display:block;padding:7px 10px;border-radius:var(--radius-sm);font-size:0.8125rem;color:var(--text-secondary);text-decoration:none;transition:background 0.1s,color 0.1s;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.dropdown-link:hover{background:var(--bg-secondary);color:var(--primary);text-decoration:none}.dropdown-header{padding:6px 10px 4px;font-size:0.6875rem;font-weight:700;text-transform:uppercase;letter-spacing:0.08em;color:var(--text-muted)}.dropdown-see-all{display:block;padding:8px 10px 4px;font-size:0.75rem;font-weight:600;color:var(--primary);text-decoration:none;border-top:1px solid var(--border);margin-top:4px}.dropdown-see-all:hover{text-decoration:underline}.header-search{display:none;position:relative;margin-left:auto;flex-shrink:0}@media (min-width:640px){.header-search{display:flex;width:180px}}@media (min-width:1024px){.header-search{width:200px}}@media (min-width:1280px){.header-search{width:240px}}.header-search-input{width:100%;padding:8px 12px 8px 36px;border:1px solid var(--border);border-radius:var(--radius-full);background:var(--bg-secondary);font-size:0.875rem;color:var(--text);outline:none;transition:border-color 0.15s,background 0.15s,box-shadow 0.15s}.header-search-input:focus{border-color:var(--primary);background:var(--bg);box-shadow:0 0 0 3px var(--primary-light)}.header-search-input::placeholder{color:var(--text-muted)}.header-search-icon{position:absolute;left:10px;top:50%;transform:translateY(-50%);color:var(--text-muted);pointer-events:none;width:16px;height:16px}.theme-toggle{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid var(--border);border-radius:var(--radius);background:none;cursor:pointer;color:var(--text-secondary);flex-shrink:0;transition:background 0.15s,color 0.15s,border-color 0.15s}.theme-toggle:hover{background:var(--bg-secondary);color:var(--text);border-color:var(--text-muted)}.theme-toggle .sun-icon{display:none}.theme-toggle .moon-icon{display:block}:root[data-theme="dark"] .theme-toggle .sun-icon{display:block}:root[data-theme="dark"] .theme-toggle .moon-icon{display:none}.menu-btn{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--border);border-radius:var(--radius);background:none;cursor:pointer;color:var(--text);margin-left:auto;flex-shrink:0}@media (min-width:1024px){.menu-btn{display:none}}.drawer-overlay{position:fixed;inset:0;background:rgb(0 0 0 / 0.5);z-index:200;opacity:0;visibility:hidden;transition:opacity 0.3s,visibility 0.3s;backdrop-filter:blur(2px)}.drawer-overlay.open{opacity:1;visibility:visible}.drawer{position:fixed;top:0;left:0;bottom:0;width:min(320px,90vw);background:var(--bg);z-index:201;transform:translateX(-100%);transition:transform 0.3s ease;display:flex;flex-direction:column;overflow:hidden;box-shadow:var(--shadow-lg)}.drawer.open{transform:translateX(0)}.drawer-header{display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid var(--border);flex-shrink:0}.drawer-close{width:36px;height:36px;border:1px solid var(--border);background:none;border-radius:var(--radius);cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--text-secondary)}.drawer-search{padding:12px 16px;border-bottom:1px solid var(--border);flex-shrink:0}.drawer-search-wrap{position:relative}.drawer-search-input{width:100%;padding:10px 12px 10px 36px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-secondary);font-size:0.9375rem;color:var(--text);outline:none}.drawer-search-input:focus{border-color:var(--primary)}.drawer-search-icon{position:absolute;left:10px;top:50%;transform:translateY(-50%);color:var(--text-muted);pointer-events:none;width:16px;height:16px}.drawer-body{flex:1;overflow-y:auto;padding:4px 0}.drawer-category{border-bottom:1px solid var(--border)}.drawer-category-btn{display:flex;align-items:center;justify-content:space-between;width:100%;padding:14px 16px;border:none;background:none;cursor:pointer;font-size:0.9375rem;font-weight:600;color:var(--text);text-align:left}.drawer-category-btn:hover{background:var(--bg-secondary)}.drawer-category-btn .chevron{width:16px;height:16px;color:var(--text-muted);transition:transform 0.2s}.drawer-category-btn.open .chevron{transform:rotate(180deg)}.drawer-subcategories{display:none;padding:4px 0 8px;background:var(--bg-secondary)}.drawer-subcategories.open{display:block}.drawer-sub-link{display:block;padding:8px 32px;font-size:0.875rem;color:var(--text-secondary);text-decoration:none}.drawer-sub-link:hover{color:var(--primary);background:var(--bg-tertiary);text-decoration:none}.hero{background:linear-gradient(135deg,#1e1b4b 0%,#4f46e5 55%,#0891b2 100%);color:white;padding:72px 0 96px;text-align:center}.hero h1{color:white;margin-bottom:16px;font-size:clamp(2rem,5vw,3.25rem);letter-spacing:-0.02em}.hero p{color:rgb(255 255 255 / 0.82);font-size:1.125rem;margin-bottom:36px;max-width:480px;margin-left:auto;margin-right:auto}.hero-stats{display:flex;align-items:center;justify-content:center;gap:32px;margin-top:40px;flex-wrap:wrap}.hero-stat{color:rgb(255 255 255 / 0.9);font-size:0.875rem}.hero-stat strong{display:block;font-size:1.5rem;font-weight:800;color:white;line-height:1.2}.hero-search-wrap{position:relative;max-width:580px;margin:0 auto}.hero-search-input{width:100%;padding:16px 130px 16px 52px;border:2px solid transparent;border-radius:var(--radius-full);font-size:1rem;background:var(--bg);color:var(--text);outline:none;box-shadow:0 8px 32px rgb(0 0 0 / 0.2);transition:box-shadow 0.15s}.hero-search-input:focus{box-shadow:0 8px 32px rgb(0 0 0 / 0.25),0 0 0 3px rgb(255 255 255 / 0.4)}.hero-search-icon{position:absolute;left:18px;top:50%;transform:translateY(-50%);color:var(--text-muted);pointer-events:none;width:20px;height:20px}.hero-search-btn{position:absolute;right:8px;top:50%;transform:translateY(-50%);padding:9px 22px;background:var(--primary);color:white;border:none;border-radius:var(--radius-full);font-size:0.9375rem;font-weight:700;cursor:pointer;transition:background 0.15s}.hero-search-btn:hover{background:var(--primary-dark)}.section{padding:64px 0}.section-header{margin-bottom:32px}.section-label{font-size:0.8125rem;font-weight:700;text-transform:uppercase;letter-spacing:0.1em;color:var(--primary);margin-bottom:8px}.section-title{font-size:clamp(1.375rem,3vw,1.75rem);font-weight:800;color:var(--text);margin-bottom:8px}.section-sub{color:var(--text-secondary);font-size:1rem}.category-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}@media (min-width:640px){.category-grid{grid-template-columns:repeat(3,1fr)}}@media (min-width:1024px){.category-grid{grid-template-columns:repeat(4,1fr);gap:20px}}@media (min-width:1280px){.category-grid{grid-template-columns:repeat(5,1fr)}}.category-card{display:flex;flex-direction:column;padding:24px 20px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-xl);text-decoration:none;transition:border-color 0.15s,box-shadow 0.15s,transform 0.15s}.category-card:hover{border-color:var(--primary);box-shadow:var(--shadow-md);transform:translateY(-2px);text-decoration:none}.category-icon{width:48px;height:48px;border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;margin-bottom:14px}.category-name{font-size:0.9375rem;font-weight:700;color:var(--text);margin-bottom:3px}.category-count{font-size:0.8125rem;color:var(--text-muted)}.cat-health{background:#fef2f2;color:#ef4444}.cat-finance{background:#f0fdf4;color:#16a34a}.cat-math{background:#eff6ff;color:#2563eb}.cat-conversion{background:#f5f3ff;color:#7c3aed}.cat-statistics{background:#fff7ed;color:#ea580c}.cat-physics{background:#ecfdf5;color:#059669}.cat-chemistry{background:#fdf4ff;color:#9333ea}.cat-biology{background:#f7fee7;color:#65a30d}.cat-sports{background:#fff1f2;color:#e11d48}.cat-construction{background:#fffbeb;color:#d97706}.cat-everyday{background:#f0f9ff;color:#0284c7}.cat-food{background:#fefce8;color:#ca8a04}.cat-other{background:#f8fafc;color:#475569}.cat-business{background:#fef3c7;color:#b45309}.calc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}@media (min-width:640px){.calc-grid{grid-template-columns:repeat(3,1fr);gap:12px}}@media (min-width:1024px){.calc-grid{grid-template-columns:repeat(4,1fr)}}.calc-card{display:flex;align-items:center;padding:14px 16px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);text-decoration:none;gap:10px;transition:border-color 0.15s,box-shadow 0.1s;min-height:56px}.calc-card:hover{border-color:var(--primary);box-shadow:var(--shadow-sm);text-decoration:none}.calc-card-name{font-size:0.875rem;font-weight:600;color:var(--text);line-height:1.35}.subcat-section{margin-bottom:52px}.subcat-section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;padding-bottom:12px;border-bottom:2px solid var(--border)}.subcat-title{font-size:1.125rem;font-weight:700;color:var(--text)}.subcat-link{font-size:0.8125rem;font-weight:500;color:var(--primary)}.subcat-link:hover{text-decoration:underline}.calc-page{max-width:820px;margin:0 auto;padding:40px 0 80px}.calc-page-header{margin-bottom:28px}.calc-page-title{font-size:clamp(1.5rem,4vw,2rem);font-weight:800;letter-spacing:-0.02em;margin-bottom:8px}.calc-page-desc{color:var(--text-secondary);font-size:1rem;line-height:1.7}.calc-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.calc-meta-tag{display:inline-flex;align-items:center;padding:3px 10px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-full);font-size:0.75rem;color:var(--text-secondary);text-decoration:none}.calc-meta-tag:hover{border-color:var(--primary);color:var(--primary)}.calc-card-wrap{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow);overflow:hidden}.calc-form-body{padding:32px}@media (max-width:639px){.calc-form-body{padding:24px 20px}}.unit-toggle{display:inline-flex;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-full);padding:3px;margin-bottom:28px}.unit-btn{padding:7px 20px;border-radius:var(--radius-full);border:none;background:none;font-size:0.875rem;font-weight:500;cursor:pointer;color:var(--text-secondary);transition:background 0.15s,color 0.15s,box-shadow 0.15s}.unit-btn.active{background:var(--bg);color:var(--primary);box-shadow:var(--shadow-sm);font-weight:700}.form-group{margin-bottom:22px}.form-label{display:block;font-size:0.875rem;font-weight:600;color:var(--text);margin-bottom:8px}.form-hint{font-weight:400;color:var(--text-muted);font-size:0.8125rem}.input-row{display:flex;gap:12px}.input-wrap{position:relative;flex:1}.form-input{width:100%;padding:12px 16px;border:1.5px solid var(--border);border-radius:var(--radius);font-size:1rem;color:var(--text);background:var(--bg);outline:none;transition:border-color 0.15s,box-shadow 0.15s;-moz-appearance:textfield}.form-input::-webkit-outer-spin-button,.form-input::-webkit-inner-spin-button{-webkit-appearance:none}.form-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}.form-input:invalid{border-color:var(--danger)}.input-unit{position:absolute;right:12px;top:50%;transform:translateY(-50%);font-size:0.8125rem;font-weight:700;color:var(--text-muted);pointer-events:none}.form-input.has-unit{padding-right:48px}.form-select{width:100%;padding:12px 40px 12px 16px;border:1.5px solid var(--border);border-radius:var(--radius);font-size:1rem;color:var(--text);background:var(--bg);outline:none;cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");background-repeat:no-repeat;background-position:right 12px center;background-size:20px}.form-select:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}.calc-submit{width:100%;padding:14px 24px;background:var(--primary);color:white;border:none;border-radius:var(--radius);font-size:1rem;font-weight:700;cursor:pointer;transition:background 0.15s,transform 0.1s;letter-spacing:0.01em;margin-top:8px}.calc-submit:hover{background:var(--primary-dark)}.calc-submit:active{transform:scale(0.99)}.calc-result{border-top:1px solid var(--border);padding:32px;background:var(--bg-secondary);display:none}@media (max-width:639px){.calc-result{padding:24px 20px}}.calc-result.visible{display:block;animation:fadeIn 0.3s ease}.result-primary{text-align:center;margin-bottom:24px}.result-value{font-size:clamp(3rem,10vw,5.5rem);font-weight:800;line-height:1;color:var(--primary);font-variant-numeric:tabular-nums;letter-spacing:-0.03em;transition:color 0.4s}.result-label{font-size:1rem;font-weight:600;color:var(--text-secondary);margin-top:8px}.result-badge{display:inline-block;padding:6px 20px;border-radius:var(--radius-full);font-size:0.9375rem;font-weight:700;margin-top:14px}.result-badge.success{background:var(--success-bg);color:var(--success)}.result-badge.warning{background:var(--warning-bg);color:var(--warning)}.result-badge.danger{background:var(--danger-bg);color:var(--danger)}.result-badge.info{background:var(--info-bg);color:var(--info)}.result-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin-top:20px}.result-item{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:16px;text-align:center}.result-item-value{font-size:1.125rem;font-weight:700;color:var(--text);font-variant-numeric:tabular-nums}.result-item-label{font-size:0.8125rem;color:var(--text-muted);margin-top:3px}.bmi-scale{margin:28px 0 0}.bmi-scale-bar{position:relative;height:10px;border-radius:var(--radius-full);background:linear-gradient(to right,#60a5fa 0%,#60a5fa 21%,#4ade80 21%,#4ade80 46%,#facc15 46%,#facc15 65%,#fb923c 65%,#fb923c 80%,#f87171 80%,#f87171 100% );margin-bottom:12px}.bmi-marker{position:absolute;top:-7px;width:24px;height:24px;background:var(--text);border:3px solid white;border-radius:50%;transform:translateX(-50%);box-shadow:var(--shadow-md);transition:left 0.6s cubic-bezier(0.34,1.56,0.64,1)}.bmi-scale-labels{display:flex;justify-content:space-between;font-size:0.6875rem;font-weight:600;color:var(--text-muted);padding:0 2px}.bmi-categories{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-top:20px}@media (min-width:540px){.bmi-categories{grid-template-columns:repeat(4,1fr)}}.bmi-cat-item{padding:10px 12px;border-radius:var(--radius);text-align:center}.bmi-cat-item .range{font-size:0.8125rem;font-weight:700}.bmi-cat-item .name{font-size:0.75rem;margin-top:2px}.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:6px;padding:18px 0 0;font-size:0.8125rem}.breadcrumb-sep{color:var(--text-muted)}.breadcrumb-link{color:var(--text-secondary);text-decoration:none}.breadcrumb-link:hover{color:var(--primary);text-decoration:underline}.breadcrumb-current{color:var(--text);font-weight:500}.page-band{background:var(--bg);border-bottom:1px solid var(--border);padding:28px 0 24px;margin-bottom:40px}.page-band h1{font-size:clamp(1.5rem,4vw,2.25rem);font-weight:800;letter-spacing:-0.02em;margin-bottom:6px}.page-band p{color:var(--text-secondary);font-size:1rem;max-width:680px}.page-band-icon{width:52px;height:52px;border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;margin-bottom:14px}.search-count{font-size:0.875rem;color:var(--text-muted);margin-bottom:20px}.search-result{display:flex;align-items:flex-start;gap:14px;padding:16px 20px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);margin-bottom:10px;text-decoration:none;transition:border-color 0.15s,box-shadow 0.15s}.search-result:hover{border-color:var(--primary);box-shadow:var(--shadow-sm);text-decoration:none}.search-result-name{font-size:1rem;font-weight:700;color:var(--text);margin-bottom:2px}.search-result-meta{font-size:0.8125rem;color:var(--text-muted)}.search-result-arrow{margin-left:auto;color:var(--text-muted);flex-shrink:0;margin-top:2px}.related-section{margin-top:40px}.related-title{font-size:0.6875rem;font-weight:700;text-transform:uppercase;letter-spacing:0.1em;color:var(--text-muted);margin-bottom:14px}.info-box{background:var(--info-bg);border:1px solid #bae6fd;border-radius:var(--radius-lg);padding:16px 20px;margin-top:24px}.info-box p{color:var(--info);font-size:0.9375rem;margin:0}.site-footer{background:#0f172a;color:rgb(255 255 255 / 0.65);padding:56px 0 32px;margin-top:auto}.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;margin-bottom:48px}@media (min-width:768px){.footer-grid{grid-template-columns:2fr repeat(3,1fr)}}.footer-brand{font-size:1.125rem;font-weight:800;color:white;margin-bottom:8px}.footer-tagline{font-size:0.875rem;line-height:1.6}.footer-col-title{font-size:0.75rem;font-weight:700;color:white;text-transform:uppercase;letter-spacing:0.1em;margin-bottom:14px}.footer-links{list-style:none;display:flex;flex-direction:column;gap:8px}.footer-links a{font-size:0.875rem;color:rgb(255 255 255 / 0.6);text-decoration:none}.footer-links a:hover{color:white}.footer-bottom{padding-top:24px;border-top:1px solid rgb(255 255 255 / 0.1);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px;font-size:0.8125rem}.text-center{text-align:center}.mt-2{margin-top:8px}.mt-4{margin-top:16px}.mt-6{margin-top:24px}.mt-8{margin-top:32px}.mb-2{margin-bottom:8px}.mb-4{margin-bottom:16px}.mb-6{margin-bottom:24px}.badge{display:inline-block;padding:3px 10px;border-radius:var(--radius-full);font-size:0.75rem;font-weight:600;background:var(--primary-light);color:var(--primary)}.empty-state{text-align:center;padding:80px 0}.empty-state-icon{font-size:3rem;margin-bottom:16px}.empty-state h2{margin-bottom:8px}.calc-content{margin-top:48px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-xl);padding:36px 32px 12px;box-shadow:var(--shadow-sm)}@media (max-width:639px){.calc-content{margin-top:36px;padding:28px 20px 8px}}.content-section{margin-bottom:32px}.content-section h2{font-size:0.6875rem;font-weight:700;text-transform:uppercase;letter-spacing:0.1em;color:var(--primary);margin-bottom:10px;padding-bottom:8px;border-bottom:2px solid var(--primary-light)}.content-section>p{font-size:0.9375rem;line-height:1.8;color:var(--text-secondary)}.formula-box{background:var(--bg-secondary);border:1px solid var(--border);border-left:3px solid var(--primary);border-radius:0 var(--radius) var(--radius) 0;padding:16px 20px;margin-bottom:12px;overflow-x:auto;-webkit-overflow-scrolling:touch}@media (max-width:639px){.formula-box,.example-box{padding:14px 16px}}.formula-box code{font-family:'SF Mono','Fira Code','Consolas',monospace;font-size:0.9375rem;color:var(--primary-dark);white-space:pre-wrap;word-break:break-word}.example-box{background:var(--bg-secondary);border:1px solid var(--border);border-left:3px solid var(--success);border-radius:0 var(--radius) var(--radius) 0;padding:16px 20px}.example-box p{color:var(--text-secondary);margin:0;font-size:0.9375rem;line-height:1.7}.faq-list{display:flex;flex-direction:column;gap:8px}.faq-item{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:border-color 0.15s,box-shadow 0.15s}.faq-item[open]{border-color:var(--primary-border);box-shadow:0 0 0 1px var(--primary-light)}.faq-question{padding:14px 18px;font-weight:600;font-size:0.9375rem;cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--bg);user-select:none;min-height:48px;box-sizing:border-box;transition:background 0.1s}.faq-question:hover{background:var(--bg-secondary)}.faq-question::after{content:'+';font-size:1.25rem;font-weight:400;color:var(--text-muted);flex-shrink:0;transition:transform 0.15s}.faq-item[open] .faq-question::after{content:'\2212';color:var(--primary)}.faq-question::-webkit-details-marker{display:none}.faq-answer{padding:0 18px 16px;border-top:1px solid var(--border)}.faq-answer p{font-size:0.9375rem;line-height:1.75;color:var(--text-secondary);margin:0;padding-top:12px}.form-range{width:100%;accent-color:var(--primary);margin-top:8px;min-height:24px;cursor:pointer}.range-value{float:right;font-weight:600;color:var(--primary);font-size:0.875rem}.input-unit-prefix{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:0.875rem;pointer-events:none}.calc-actions{display:flex;align-items:center;gap:8px;padding:12px 32px;border-top:1px solid var(--border);background:var(--bg-secondary)}@media (max-width:639px){.calc-actions{padding:12px 20px}}.calc-action-btn{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg);color:var(--text-secondary);font-size:0.8125rem;font-weight:500;cursor:pointer;transition:background 0.15s,color 0.15s,border-color 0.15s}.calc-action-btn:hover{background:var(--bg-secondary);color:var(--primary);border-color:var(--primary-border)}.calc-action-btn svg{width:14px;height:14px}.calc-action-btn.copied{color:var(--success);border-color:var(--success)}.embed-modal{display:none;position:fixed;inset:0;z-index:300;background:rgb(0 0 0 / 0.5);justify-content:center;align-items:center}.embed-modal.visible{display:flex}.embed-modal-inner{background:var(--bg);border-radius:var(--radius-xl);padding:28px;max-width:560px;width:90%;box-shadow:var(--shadow-lg)}.embed-modal-inner h3{margin-bottom:12px;font-size:1.125rem}.embed-modal-inner textarea{width:100%;padding:12px;border:1.5px solid var(--border);border-radius:var(--radius);font-family:'SF Mono',monospace;font-size:0.8125rem;background:var(--bg-secondary);color:var(--text);resize:none;height:80px}.embed-modal-inner .embed-actions{display:flex;gap:8px;margin-top:12px}.search-overlay{position:absolute;top:100%;left:0;right:0;margin-top:4px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);z-index:150;display:none;overflow:hidden;max-height:440px;overflow-y:auto}.search-overlay.visible{display:block;animation:fadeIn 0.15s ease}.search-overlay-item{display:flex;align-items:center;gap:12px;padding:10px 16px;text-decoration:none;color:var(--text);font-size:0.875rem;transition:background 0.1s;cursor:pointer;border-bottom:1px solid var(--border)}.search-overlay-item:last-child{border-bottom:none}.search-overlay-item:hover,.search-overlay-item.focused{background:var(--primary-light);text-decoration:none}.search-overlay-title{font-weight:600}.search-overlay-title mark{background:none;color:var(--primary);font-weight:700}.search-overlay-crumb{font-size:0.75rem;color:var(--text-muted)}.search-overlay-empty{padding:20px 16px;text-align:center;color:var(--text-muted);font-size:0.875rem}.search-overlay-hint{padding:8px 16px;font-size:0.75rem;color:var(--text-muted);text-align:right;border-top:1px solid var(--border);background:var(--bg-secondary)}.search-overlay-hint kbd{display:inline-block;padding:1px 5px;border:1px solid var(--border);border-radius:3px;font-size:0.6875rem;font-family:inherit;background:var(--bg);color:var(--text-secondary)}.header-search{position:relative}.hero-search-wrap{position:relative}@media print{.site-header,.drawer,.drawer-overlay,.site-footer,.breadcrumb,.hero,.calc-meta,.calc-actions,.calc-submit,.search-overlay,.embed-modal,.theme-toggle,.menu-btn,.related-section{display:none !important}body{background:white;color:black;font-size:12pt}main{flex:none}.container{max-width:100%;padding:0}.calc-page{padding:0;max-width:100%}.calc-result{display:block !important;background:none;border:none;padding:20pt 0}.result-value{color:black;font-size:28pt}.result-item{border:1pt solid #ddd}.calc-card-wrap{box-shadow:none;border:1pt solid #ddd}.form-input,.form-select{border:none;background:none;padding:4pt 0}.calc-content{border:none;box-shadow:none;padding:10pt 0}.formula-box,.example-box{border-left:2pt solid #999;background:#f9f9f9}.formula-box code{color:#333}.content-section,.faq-item,.result-grid{break-inside:avoid}@page{margin:2cm}.calc-page-title::after{content:" — calculatorcult.com";font-size:10pt;font-weight:400;color:#999}.faq-item[open] .faq-answer,.faq-answer{display:block !important}a[href]::after{content:none}}.skip-link{position:absolute;top:-100px;left:16px;z-index:999;padding:8px 16px;background:var(--primary);color:white;border-radius:var(--radius);font-weight:600;font-size:0.875rem;text-decoration:none;transition:top 0.2s}.skip-link:focus{top:8px}:focus-visible{outline:2px solid var(--primary);outline-offset:2px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--primary);outline-offset:2px}input:focus-visible,select:focus-visible,textarea:focus-visible{outline-offset:0;box-shadow:0 0 0 3px var(--primary-light)}@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:0.01ms !important;animation-iteration-count:1 !important;transition-duration:0.01ms !important;scroll-behavior:auto !important}}@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@media (max-width:639px){.hero{padding:36px 0 56px}.hero h1{font-size:clamp(1.5rem,6vw,2.25rem)}.hero p{font-size:1rem;margin-bottom:24px}.hero-stats{gap:20px;margin-top:28px}.hero-stat strong{font-size:1.25rem}.section{padding:36px 0}.category-grid{gap:10px}.category-card{padding:18px 14px}.category-icon{width:40px;height:40px;margin-bottom:10px}.category-name{font-size:0.8125rem}.category-count{font-size:0.75rem}.input-row{flex-direction:column;gap:8px}.result-grid{grid-template-columns:repeat(2,1fr)}.result-value{font-size:clamp(2rem,12vw,4rem)}.hero-search-btn{padding:9px 14px;font-size:0.875rem}.hero-search-input{padding-right:90px}.calc-page-title{font-size:clamp(1.25rem,5vw,1.75rem)}.page-band h1{font-size:clamp(1.25rem,5vw,1.75rem)}.calc-actions{flex-wrap:wrap;gap:6px}.calc-action-btn{font-size:0.75rem;padding:6px 10px}}@supports (padding:env(safe-area-inset-bottom)){.site-header{padding-left:env(safe-area-inset-left);padding-right:env(safe-area-inset-right)}.site-footer{padding-bottom:calc(32px+env(safe-area-inset-bottom))}.drawer{padding-bottom:env(safe-area-inset-bottom)}}@media (max-width:479px){.category-grid{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;gap:10px;padding-bottom:8px}.category-card{flex:0 0 160px;scroll-snap-align:start}.category-grid::-webkit-scrollbar{display:none}.category-grid{scrollbar-width:none}}.viz-bars{display:flex;flex-direction:column;gap:10px;margin:16px 0}.viz-bar-row{display:flex;align-items:center;gap:10px}.viz-bar-label{flex:0 0 100px;font-size:0.8125rem;font-weight:500;color:var(--text-secondary);text-align:right}.viz-bar-track{flex:1;height:26px;background:var(--bg-tertiary);border-radius:var(--radius);overflow:hidden;position:relative}.viz-bar-fill{height:100%;border-radius:var(--radius);transition:width 0.6s cubic-bezier(0.4,0,0.2,1);min-width:2px}.viz-bar-value{flex:0 0 70px;font-size:0.8125rem;font-weight:700;font-variant-numeric:tabular-nums;color:var(--text)}@media (max-width:479px){.viz-bar-label{flex:0 0 60px;font-size:0.75rem}.viz-bar-value{flex:0 0 50px;font-size:0.75rem}}.viz-stacked{position:relative;height:36px;border-radius:var(--radius);overflow:hidden;margin:12px 0;display:flex}.viz-stacked-seg{height:100%;transition:width 0.6s ease;display:flex;align-items:center;justify-content:center;font-size:0.75rem;font-weight:600;color:white;min-width:24px}.viz-stacked-legend{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}.viz-stacked-legend-item{display:flex;align-items:center;gap:6px;font-size:0.8125rem;color:var(--text-secondary)}.viz-stacked-legend-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}.viz-ring{width:120px;height:120px;border-radius:50%;display:flex;align-items:center;justify-content:center;position:relative}.viz-ring-inner{width:88px;height:88px;border-radius:50%;background:var(--bg);display:flex;align-items:center;justify-content:center;flex-direction:column}.viz-ring-value{font-size:1.25rem;font-weight:800;color:var(--text);line-height:1}.viz-ring-label{font-size:0.625rem;color:var(--text-muted);margin-top:2px}.viz-gauge-wrap{text-align:center;margin:16px 0}.viz-gauge{width:200px;height:100px;border-radius:200px 200px 0 0;overflow:hidden;position:relative;margin:0 auto;background:var(--bg-tertiary)}.viz-gauge-fill{position:absolute;bottom:0;left:0;right:0;height:200px;width:200px;border-radius:50%;transform-origin:center center;transition:transform 0.8s cubic-bezier(0.4,0,0.2,1)}.viz-gauge-center{position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:140px;height:70px;background:var(--bg);border-radius:140px 140px 0 0}.viz-gauge-value{position:absolute;bottom:8px;left:0;right:0;text-align:center;font-size:1.5rem;font-weight:800;color:var(--text)}.viz-table{width:100%;border-collapse:collapse;margin:16px 0;font-size:0.8125rem}.viz-table th{text-align:left;padding:10px 12px;font-weight:700;font-size:0.75rem;text-transform:uppercase;letter-spacing:0.05em;color:var(--text-muted);border-bottom:2px solid var(--border);background:var(--bg-secondary)}.viz-table td{padding:10px 12px;border-bottom:1px solid var(--border);color:var(--text-secondary);font-variant-numeric:tabular-nums}.viz-table td:first-child{color:var(--text);font-weight:500}.viz-table tr:hover td{background:var(--bg-secondary)}.viz-table .viz-highlight{font-weight:700;color:var(--primary)}.viz-table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:16px 0}.viz-table-scroll .viz-table{margin:0;min-width:480px}.viz-timeline{display:flex;align-items:flex-start;gap:0;margin:20px 0;position:relative}.viz-timeline::before{content:'';position:absolute;top:14px;left:0;right:0;height:3px;background:var(--border);z-index:0}.viz-timeline-item{flex:1;text-align:center;position:relative;z-index:1;padding:0 4px}.viz-timeline-dot{width:28px;height:28px;border-radius:50%;background:var(--bg-secondary);border:3px solid var(--border);margin:0 auto 8px;display:flex;align-items:center;justify-content:center;font-size:0.6875rem;font-weight:700;color:var(--text-muted);transition:background 0.3s,border-color 0.3s,color 0.3s}.viz-timeline-item.active .viz-timeline-dot{background:var(--primary);border-color:var(--primary);color:white}.viz-timeline-item.completed .viz-timeline-dot{background:var(--success);border-color:var(--success);color:white}.viz-timeline-label{font-size:0.6875rem;color:var(--text-muted);font-weight:500;line-height:1.3}.viz-timeline-item.active .viz-timeline-label{color:var(--primary);font-weight:700}.viz-tabs{display:flex;gap:2px;border-bottom:2px solid var(--border);margin-bottom:20px}.viz-tab{padding:10px 18px;font-size:0.875rem;font-weight:600;color:var(--text-muted);border:none;background:none;cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-2px;transition:color 0.15s,border-color 0.15s}.viz-tab:hover{color:var(--text)}.viz-tab.active{color:var(--primary);border-bottom-color:var(--primary)}.viz-tab-panel{display:none}.viz-tab-panel.active{display:block;animation:fadeIn 0.2s ease}.show-work-toggle{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg);color:var(--text-secondary);font-size:0.8125rem;font-weight:500;cursor:pointer;transition:background 0.15s,color 0.15s;margin-top:12px}.show-work-toggle:hover{background:var(--bg-secondary);color:var(--primary)}.show-work{display:none;margin-top:12px;padding:16px 20px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);font-family:'SF Mono','Fira Code',monospace;font-size:0.8125rem;line-height:1.8;color:var(--text-secondary);overflow-x:auto}.show-work.visible{display:block;animation:fadeIn 0.2s ease}.show-work var{color:var(--primary);font-style:normal;font-weight:600}.show-work .step{margin-bottom:6px}.show-work .step-result{color:var(--text);font-weight:700}.calc-history-btn{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg);color:var(--text-secondary);font-size:0.8125rem;font-weight:500;cursor:pointer}.calc-history-btn:hover{background:var(--bg-secondary);color:var(--primary)}.calc-history{display:none;margin-top:12px;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden}.calc-history.visible{display:block}.calc-history-header{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;background:var(--bg-secondary);border-bottom:1px solid var(--border);font-size:0.8125rem;font-weight:600;color:var(--text)}.calc-history-clear{font-size:0.75rem;color:var(--danger);cursor:pointer;border:none;background:none;font-weight:500}.calc-history-list{max-height:280px;overflow-y:auto}.calc-history-entry{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;border-bottom:1px solid var(--border);cursor:pointer;transition:background 0.1s}.calc-history-entry:hover{background:var(--bg-secondary)}.calc-history-entry:last-child{border-bottom:none}.calc-history-result{font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums}.calc-history-time{font-size:0.6875rem;color:var(--text-muted)}.fav-btn{background:none;border:2px solid var(--border);border-radius:50%;width:40px;height:40px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-muted);transition:all 0.2s;flex-shrink:0}.fav-btn:hover{border-color:#ef4444;color:#ef4444}.fav-btn.active{border-color:#ef4444;color:#ef4444}.fav-btn.active .fav-icon{fill:#ef4444;stroke:#ef4444}.fav-badge{background:#ef4444;color:#fff;font-size:0.625rem;font-weight:700;min-width:16px;height:16px;border-radius:8px;display:flex;align-items:center;justify-content:center;padding:0 4px;position:absolute;top:-4px;right:-6px}.fav-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.fav-card{display:flex;align-items:center;gap:12px;padding:16px;border-radius:12px;border:1px solid var(--border);background:var(--bg);transition:all 0.15s}.fav-card:hover{border-color:var(--primary);box-shadow:0 2px 8px rgba(0,0,0,0.06)}.fav-remove{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:4px;border-radius:4px;transition:color 0.15s;flex-shrink:0}.fav-remove:hover{color:#ef4444}