@import"https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600&family=Space+Grotesk:wght@400;500;600;700&display=swap";:root{--bg-base: #070d1a;--bg-surface: #0d1526;--bg-raised: #111e35;--bg-overlay: #162440;--border: #1e3050;--border-bright: #2a4570;--text-primary: #e2eaf8;--text-secondary: #7a9abf;--text-muted: #3d5a80;--text-dim: #243850;--cyan: #22d3ee;--cyan-dim: #0e7490;--cyan-glow: rgba(34, 211, 238, .15);--cyan-glow-sm: rgba(34, 211, 238, .08);--amber: #f59e0b;--green: #4ade80;--red: #f87171;--font-ui: "Space Grotesk", system-ui, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--radius-sm: 4px;--radius: 8px;--radius-lg: 12px;--radius-xl: 16px;--shadow-sm: 0 1px 3px rgba(0,0,0,.4);--shadow: 0 4px 16px rgba(0,0,0,.5);--shadow-cyan: 0 0 20px rgba(34,211,238,.12), 0 0 40px rgba(34,211,238,.06);--shadow-card: 0 2px 8px rgba(0,0,0,.4), inset 0 1px 0 rgba(255,255,255,.03)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;scroll-behavior:smooth}body{font-family:var(--font-ui);background-color:var(--bg-base);color:var(--text-primary);line-height:1.6;min-height:100vh;background-image:linear-gradient(var(--border) 1px,transparent 1px),linear-gradient(90deg,var(--border) 1px,transparent 1px);background-size:40px 40px;background-position:-1px -1px}h1,h2,h3,h4,h5,h6{font-family:var(--font-ui);font-weight:600;line-height:1.2;color:var(--text-primary)}h1{font-size:clamp(1.75rem,4vw,2.5rem)}h2{font-size:clamp(1.25rem,3vw,1.75rem)}h3{font-size:1.125rem}p{color:var(--text-secondary)}a{color:var(--cyan);text-decoration:none;transition:color .15s,opacity .15s}a:hover{color:#67e8f9}code,.mono{font-family:var(--font-mono);font-size:.875em}.container{max-width:1100px;margin:0 auto;padding:0 1.5rem}.container--narrow{max-width:720px;margin:0 auto;padding:0 1.5rem}.site-header{position:sticky;top:0;z-index:100;background:#070d1aeb;backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}.site-header__inner{display:flex;align-items:center;justify-content:space-between;height:60px;gap:1rem}.site-logo{display:flex;align-items:center;gap:.6rem;font-family:var(--font-mono);font-size:1.1rem;font-weight:600;color:var(--text-primary);text-decoration:none}.site-logo__mark{width:28px;height:28px;flex-shrink:0}.site-logo__accent{color:var(--cyan)}.site-nav{display:flex;align-items:center;gap:.25rem}.site-nav a{color:var(--text-secondary);font-size:.875rem;font-weight:500;padding:.4rem .75rem;border-radius:var(--radius-sm);transition:color .15s,background .15s}.site-nav a:hover,.site-nav a[aria-current=page]{color:var(--cyan);background:var(--cyan-glow-sm)}.site-footer{margin-top:4rem;border-top:1px solid var(--border);padding:2rem 0;color:var(--text-muted);font-size:.8rem}.site-footer__inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}.card{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow-card);transition:border-color .2s,box-shadow .2s}.card:hover{border-color:var(--border-bright);box-shadow:var(--shadow-card),var(--shadow-cyan)}.card--tool{display:block;color:inherit;text-decoration:none}.card--tool:hover h3{color:var(--cyan)}.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1rem}.badge{display:inline-flex;align-items:center;gap:.3rem;font-family:var(--font-mono);font-size:.7rem;font-weight:500;padding:.2rem .6rem;border-radius:999px;letter-spacing:.05em;text-transform:uppercase}.badge--live{background:#4ade801a;color:var(--green);border:1px solid rgba(74,222,128,.25)}.badge--soon{background:#f59e0b1a;color:var(--amber);border:1px solid rgba(245,158,11,.25)}.badge--new{background:var(--cyan-glow);color:var(--cyan);border:1px solid rgba(34,211,238,.25)}.calc-field{margin-bottom:1.25rem}.calc-field label{display:block;font-size:.8rem;font-weight:500;color:var(--text-secondary);margin-bottom:.4rem;font-family:var(--font-mono);letter-spacing:.04em;text-transform:uppercase}.calc-field label .unit{color:var(--text-muted);font-weight:400}.calc-input{width:100%;background:var(--bg-base);border:1px solid var(--border);border-radius:var(--radius);color:var(--text-primary);font-family:var(--font-mono);font-size:1rem;padding:.65rem .875rem;outline:none;transition:border-color .15s,box-shadow .15s;-moz-appearance:textfield}.calc-input::-webkit-outer-spin-button,.calc-input::-webkit-inner-spin-button{-webkit-appearance:none}.calc-input:focus{border-color:var(--cyan-dim);box-shadow:0 0 0 3px var(--cyan-glow)}.calc-input::placeholder{color:var(--text-dim)}.calc-input--active{border-color:var(--cyan);box-shadow:0 0 0 3px var(--cyan-glow);color:var(--cyan)}.calc-select{width:100%;background:var(--bg-base);border:1px solid var(--border);border-radius:var(--radius);color:var(--text-primary);font-family:var(--font-ui);font-size:.9375rem;padding:.65rem .875rem;outline:none;cursor:pointer;transition:border-color .15s}.calc-select:focus{border-color:var(--cyan-dim)}.result-panel{background:var(--bg-base);border:1px solid var(--cyan-dim);border-radius:var(--radius-lg);padding:1.25rem 1.5rem;margin-top:1.5rem;box-shadow:var(--shadow-cyan);position:relative;overflow:hidden}.result-panel:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,var(--cyan-glow) 0%,transparent 60%);pointer-events:none}.result-label{font-family:var(--font-mono);font-size:.7rem;color:var(--cyan-dim);text-transform:uppercase;letter-spacing:.1em;margin-bottom:.3rem}.result-value{font-family:var(--font-mono);font-size:2rem;font-weight:600;color:var(--cyan);line-height:1.1}.result-unit{font-size:1rem;color:var(--text-secondary);margin-left:.4rem}.result-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1rem;margin-top:1.5rem}.result-item{background:var(--bg-base);border:1px solid var(--border);border-radius:var(--radius);padding:.875rem 1rem;transition:border-color .15s}.result-item.is-solved{border-color:var(--cyan-dim);box-shadow:var(--shadow-cyan)}.result-item .result-label{margin-bottom:.25rem}.result-item .result-value{font-size:1.25rem}.formula-block{margin-top:1rem;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.formula-block summary{display:flex;align-items:center;gap:.5rem;padding:.6rem .875rem;font-family:var(--font-mono);font-size:.75rem;color:var(--text-muted);cursor:pointer;user-select:none;background:var(--bg-raised);text-transform:uppercase;letter-spacing:.05em}.formula-block summary:hover{color:var(--text-secondary)}.formula-block summary::marker{display:none}.formula-block summary::-webkit-details-marker{display:none}.formula-content{padding:.875rem;background:var(--bg-base);font-family:var(--font-mono);font-size:.85rem;color:var(--text-secondary);line-height:1.8}.formula-content .eq{color:var(--cyan);font-weight:500}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;font-family:var(--font-ui);font-size:.9375rem;font-weight:600;padding:.65rem 1.25rem;border-radius:var(--radius);border:none;cursor:pointer;transition:all .15s;text-decoration:none}.btn--primary{background:var(--cyan);color:var(--bg-base)}.btn--primary:hover{background:#67e8f9;box-shadow:0 0 16px #22d3ee59;color:var(--bg-base)}.btn--ghost{background:transparent;color:var(--text-secondary);border:1px solid var(--border)}.btn--ghost:hover{border-color:var(--border-bright);color:var(--text-primary);background:var(--bg-raised)}.btn--full{width:100%}.divider{border:none;border-top:1px solid var(--border);margin:2rem 0}.tag{display:inline-block;font-family:var(--font-mono);font-size:.7rem;color:var(--text-muted);background:var(--bg-raised);border:1px solid var(--border);border-radius:999px;padding:.15rem .55rem}.section-title{display:flex;align-items:center;gap:.75rem;margin-bottom:1.25rem}.section-title h2{margin:0}.section-title__line{flex:1;height:1px;background:linear-gradient(90deg,var(--border),transparent)}.hero{padding:4rem 0 3rem;position:relative}.hero__eyebrow{font-family:var(--font-mono);font-size:.75rem;color:var(--cyan);text-transform:uppercase;letter-spacing:.12em;margin-bottom:.75rem}.hero__title{margin-bottom:1rem}.hero__title .accent{color:var(--cyan)}.hero__subtitle{font-size:1.0625rem;color:var(--text-secondary);max-width:540px;margin-bottom:2rem}.ref-toc{display:flex;flex-wrap:wrap;gap:.5rem;margin:1.5rem 0 2.5rem}.ref-toc a{font-family:var(--font-mono);font-size:.75rem;color:var(--text-secondary);background:var(--bg-surface);border:1px solid var(--border);border-radius:999px;padding:.3rem .75rem;transition:color .15s,border-color .15s}.ref-toc a:hover{color:var(--cyan);border-color:var(--cyan-dim)}.ref-section{margin-bottom:3.5rem;scroll-margin-top:76px}.ref-section>h2{display:flex;align-items:center;gap:.75rem;margin-bottom:.5rem}.ref-section>h2:after{content:"";flex:1;height:1px;background:linear-gradient(90deg,var(--border),transparent)}.ref-note{font-size:.82rem;color:var(--text-muted);font-family:var(--font-mono);margin-bottom:1rem}.ref-table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg-surface)}.ref-table{width:100%;border-collapse:collapse;font-family:var(--font-mono);font-size:.85rem}.ref-table th{text-align:left;padding:.55rem 1rem;font-size:.7rem;color:var(--cyan-dim);text-transform:uppercase;letter-spacing:.08em;border-bottom:1px solid var(--border);background:var(--bg-raised);font-weight:500;white-space:nowrap}.ref-table td{padding:.5rem 1rem;color:var(--text-primary);border-bottom:1px solid var(--bg-raised);white-space:nowrap}.ref-table tr:last-child td{border-bottom:none}.ref-table tbody tr:hover td{background:var(--bg-raised)}.ref-table .dim{color:var(--text-muted)}.ref-table .hi{color:var(--cyan);font-weight:500}.ref-table .ok{color:var(--green)}.ref-table .warn{color:var(--amber)}.ref-table .bad{color:var(--red)}.e24-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(68px,1fr));gap:.35rem;margin-top:1rem}.e24-chip{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:.4rem .25rem;font-family:var(--font-mono);font-size:.85rem;color:var(--text-primary);text-align:center}.pinout-grid{display:flex;gap:1.25rem;flex-wrap:wrap;margin-top:1rem}.pinout-card{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.25rem 1.5rem;flex:1;min-width:200px}.pinout-card h3{font-size:.85rem;color:var(--cyan);margin-bottom:.15rem;font-family:var(--font-mono)}.pinout-pkg{font-size:.72rem;color:var(--text-muted);font-family:var(--font-mono);margin-bottom:1rem}.pinout-pin{display:grid;grid-template-columns:1.75em 5.5em 1fr;gap:.5rem;padding:.3rem 0;border-bottom:1px solid var(--bg-raised);font-size:.8rem;align-items:baseline}.pinout-pin:last-child{border-bottom:none}.pin-num{color:var(--cyan-dim);font-family:var(--font-mono);text-align:right}.pin-name{color:var(--text-primary);font-family:var(--font-mono);font-weight:500}.pin-desc{color:var(--text-secondary);font-size:.78rem;font-family:var(--font-ui)}@media(max-width:640px){.site-nav{display:none}.result-grid{grid-template-columns:1fr 1fr}}