:root{--color-bg-base: #0A0A0A;--color-bg-surface: #141414;--color-bg-elevated: #1C1C1C;--color-bg-overlay: #252525;--color-accent: #E07040;--color-accent-soft: rgba(224, 112, 64, .15);--color-accent-glow: rgba(224, 112, 64, .08);--color-accent-muted: #8B4527;--color-digital: #60A8D8;--color-digital-soft: rgba(96, 168, 216, .15);--color-text-primary: #F0EDE8;--color-text-secondary:#A89F96;--color-text-muted: #6B635C;--color-border: #2A2520;--color-border-strong: #3D3530;--color-vcc: #E05050;--color-gnd: #888888;--color-data: #60D890;--font-sans: system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;--font-mono: ui-monospace, "Cascadia Code", "Fira Code", monospace;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.5rem;--font-size-2xl: 2rem;--font-size-3xl: 3rem;--font-size-hero: clamp(2.4rem, 6vw, 4.8rem);--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-6: 1.5rem;--space-8: 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16px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-size:16px}body{background-color:var(--color-bg-base);color:var(--color-text-primary);font-family:var(--font-sans);font-size:var(--font-size-base);line-height:1.65;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:var(--color-accent);text-decoration:none}a:hover{text-decoration:underline}section{padding-block:var(--section-padding-y)}.container{width:min(100%,var(--max-width-content));margin-inline:auto;padding-inline:var(--space-6)}.section-label{font-size:var(--font-size-xs);font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--color-accent);margin-bottom:var(--space-3)}.section-title{font-size:var(--font-size-2xl);font-weight:700;letter-spacing:-.02em;line-height:1.15;color:var(--color-text-primary);margin-bottom:var(--space-4)}.section-body{font-size:var(--font-size-lg);color:var(--color-text-secondary);max-width:var(--max-width-text);line-height:1.7}.card{background:var(--color-bg-surface);border:1px 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var(--color-accent)}.btn-primary{background:var(--color-accent);color:#fff}.btn-primary:hover{background:#f08550;transform:translateY(-1px)}.btn-primary:active{transform:translateY(0)}.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}input[type=range]{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:4px;background:var(--color-border-strong);border-radius:2px;outline:none}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:18px;height:18px;border-radius:50%;background:var(--color-accent);cursor:pointer;transition:transform 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draw-wave{to{stroke-dashoffset:0}}.hero-dot{opacity:0;animation:pop-in .4s ease forwards}@keyframes pop-in{0%{opacity:0;transform:scale(0);transform-origin:center center}to{opacity:1;transform:scale(1);transform-origin:center center}}.sampling-section{background:var(--color-bg-base)}.sampling-interactive{margin-top:var(--space-12);display:flex;flex-direction:column;gap:var(--space-8);background:var(--color-bg-surface);border:1px solid var(--color-border-strong);border-radius:var(--radius-xl);padding:var(--space-8)}.sampling-svg-wrap{width:100%}.sampling-svg{width:100%;height:auto;border-radius:var(--radius-base);background:var(--color-bg-elevated)}.sampling-dot{transition:cx .2s,cy 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var(--color-accent-muted);border-radius:var(--radius-lg)}.sampling-insight-icon{font-size:var(--font-size-xl);color:var(--color-accent);flex-shrink:0;line-height:1;margin-top:2px}.sampling-insight p{font-size:var(--font-size-base);color:var(--color-text-secondary);line-height:1.7}.sampling-insight strong{color:var(--color-text-primary)}.sampling-insight em{color:var(--color-accent);font-style:normal;font-weight:600}.analog-digital-section{background:var(--color-bg-surface)}.ad-grid{display:grid;grid-template-columns:1fr auto 1fr;gap:var(--space-8);margin-top:var(--space-12);align-items:start}.ad-divider{width:1px;align-self:stretch;background:var(--color-border-strong);margin-block:var(--space-8)}.signal-card{background:var(--color-bg-elevated);border:1px solid var(--color-border-strong);border-radius:var(--radius-lg);padding:var(--space-8);display:flex;flex-direction:column;gap:var(--space-6);transition:box-shadow var(--duration-base)}.signal-card:hover{box-shadow:0 8px 32px #0000004d}.signal-card.analog{border-top:3px solid var(--color-accent)}.signal-card.digital{border-top:3px solid var(--color-digital)}.signal-card-header{display:flex;flex-direction:column;gap:var(--space-2)}.signal-badge{display:inline-block;font-size:var(--font-size-xs);font-weight:700;letter-spacing:.1em;text-transform:uppercase;padding:2px var(--space-2);border-radius:var(--radius-sm);width:fit-content}.signal-card-title{font-size:var(--font-size-xl);font-weight:700;letter-spacing:-.01em;color:var(--color-text-primary)}.signal-wave-wrap{display:flex;flex-direction:column;gap:var(--space-3)}.signal-svg{width:100%;height:auto;background:var(--color-bg-overlay);border-radius:var(--radius-base);border:1px solid var(--color-border)}.signal-readout{display:flex;gap:var(--space-3);align-items:center;font-family:var(--font-mono);font-size:var(--font-size-sm)}.signal-readout-label{color:var(--color-text-muted);flex-shrink:0}.signal-readout-value{color:var(--color-text-primary);font-weight:700;min-width:5ch}.signal-readout-note{color:var(--color-text-muted)}.signal-description{color:var(--color-text-secondary);font-size:var(--font-size-base);line-height:1.65}.signal-specs{display:flex;flex-direction:column;gap:var(--space-2);border-top:1px solid var(--color-border);padding-top:var(--space-4)}.signal-specs>div{display:grid;grid-template-columns:1fr 1.5fr;gap:var(--space-4);font-size:var(--font-size-sm)}.signal-specs dt{color:var(--color-text-muted);font-weight:500}.signal-specs dd{color:var(--color-text-secondary)}@media(max-width:680px){.ad-grid{grid-template-columns:1fr}.ad-divider{width:auto;height:1px;margin-inline:0;margin-block:0}}.sensor-card{background:var(--color-bg-surface);border:1px solid var(--color-border-strong);border-radius:var(--radius-xl);padding:var(--space-8);display:flex;flex-direction:column;gap:var(--space-6);transition:box-shadow var(--duration-base) ease,transform var(--duration-base) var(--ease-out-expo)}.sensor-card:hover{box-shadow:0 12px 48px #0006;transform:translateY(-2px)}.sensor-card.analog{border-top:3px solid var(--color-accent)}.sensor-card.digital{border-top:3px solid var(--color-digital)}.sensor-card-header{display:flex;flex-direction:column;gap:var(--space-2)}.sensor-card-meta{display:flex;align-items:center;gap:var(--space-3)}.sensor-badge{font-size:var(--font-size-xs);font-weight:700;letter-spacing:.1em;text-transform:uppercase;padding:2px var(--space-2);border-radius:var(--radius-sm)}.analog-badge{background:var(--color-accent-soft);color:var(--color-accent)}.digital-badge{background:var(--color-digital-soft);color:var(--color-digital)}.sensor-reporter{font-size:var(--font-size-sm);color:var(--color-text-muted);font-weight:500}.sensor-name{font-size:var(--font-size-2xl);font-weight:800;letter-spacing:-.02em;color:var(--color-text-primary)}.sensor-full-name{font-size:var(--font-size-sm);color:var(--color-text-muted)}.sensor-description{color:var(--color-text-secondary);font-size:var(--font-size-base);line-height:1.7}.sensor-idea{background:var(--color-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-base);padding:var(--space-4) var(--space-6);display:flex;flex-direction:column;gap:var(--space-2)}.sensor-idea-label{font-size:var(--font-size-xs);font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--color-text-muted)}.sensor-idea p{font-size:var(--font-size-sm);color:var(--color-text-secondary);line-height:1.65}.sensor-demo{background:var(--color-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-6)}.sensor-specs{display:flex;flex-direction:column;gap:var(--space-2);border-top:1px solid var(--color-border);padding-top:var(--space-4)}.sensor-spec-row{display:grid;grid-template-columns:1fr 1.5fr;gap:var(--space-4);font-size:var(--font-size-sm)}.sensor-spec-row dt{color:var(--color-text-muted);font-weight:500}.sensor-spec-row dd{color:var(--color-text-secondary);font-family:var(--font-mono)}.sensors-section{background:var(--color-bg-base)}.sensors-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:var(--space-8);margin-top:var(--space-12)}.ldr-demo{display:flex;flex-direction:column;gap:var(--space-5)}.ldr-visual{display:flex;align-items:center;gap:var(--space-6)}.ldr-eye{width:100px;height:100px;flex-shrink:0}.ldr-metrics{display:flex;flex-direction:column;gap:var(--space-3);flex:1}.ldr-metric{display:flex;flex-direction:column;gap:var(--space-1)}.ldr-metric-label{font-size:var(--font-size-xs);color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.08em;font-weight:600}.ldr-metric-value{font-size:var(--font-size-lg);font-weight:700;font-family:var(--font-mono);color:var(--color-text-primary)}.ldr-metric-value.accent{color:var(--color-accent)}.ldr-slider-wrap{display:flex;flex-direction:column;gap:var(--space-3)}.ldr-slider-label{display:flex;align-items:center;gap:var(--space-2);font-size:var(--font-size-sm);font-weight:600;color:var(--color-text-secondary)}.ldr-slider-ticks{display:flex;justify-content:space-between;font-size:var(--font-size-xs);color:var(--color-text-muted)}.dht11-demo{display:flex;flex-direction:column;gap:var(--space-5)}.dht11-bit-stream{display:flex;flex-wrap:wrap;gap:3px;font-family:var(--font-mono);font-size:13px;line-height:1;padding:var(--space-3);background:var(--color-bg-base);border-radius:var(--radius-base);border:1px solid var(--color-border)}.dht11-bit{display:inline-flex;width:18px;height:22px;align-items:center;justify-content:center;border-radius:3px;transition:background 80ms,color 80ms;font-weight:700}.dht11-bit.one,.dht11-bit.zero{color:var(--color-text-muted)}.dht11-bit.active{background:var(--color-accent);color:#fff;transform:scale(1.2)}.dht11-bit.sent.one{color:var(--color-digital)}.dht11-bit.sent.zero{color:var(--color-text-secondary)}.dht11-labels{display:flex;justify-content:space-between;font-size:var(--font-size-xs);color:var(--color-text-muted);font-family:var(--font-mono)}.dht11-actions{display:flex;flex-direction:column;gap:var(--space-4)}.dht11-result{display:flex;gap:var(--space-4);padding:var(--space-4);background:var(--color-bg-base);border:1px solid var(--color-digital);border-radius:var(--radius-base);animation:fade-in .3s ease}@keyframes fade-in{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.dht11-result-item{display:flex;flex-direction:column;gap:var(--space-1)}.dht11-result-label{font-size:var(--font-size-xs);color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.08em}.dht11-result-value{font-size:var(--font-size-xl);font-weight:700;font-family:var(--font-mono);color:var(--color-digital)}.sonar-demo{display:flex;flex-direction:column;gap:var(--space-5)}.sonar-svg{width:100%;height:auto;background:var(--color-bg-base);border-radius:var(--radius-base);border:1px solid var(--color-border)}@keyframes sonar-pulse{0%{r:0;stroke-opacity:.8}to{r:120;stroke-opacity:0}}.sonar-ring{animation:sonar-pulse 1s ease-out forwards}.sonar-controls{display:flex;flex-direction:column;gap:var(--space-4)}.sonar-formula{padding:var(--space-4);background:var(--color-bg-base);border:1px solid var(--color-accent-muted);border-radius:var(--radius-base);display:flex;flex-direction:column;gap:var(--space-3);animation:fade-in .3s ease}.sonar-formula-line{display:flex;align-items:center;gap:var(--space-3);font-size:var(--font-size-sm);flex-wrap:wrap}.sonar-formula-label{color:var(--color-text-muted);flex-shrink:0}.sonar-formula-value{color:var(--color-text-primary);font-weight:700}.sonar-formula-eq{color:var(--color-text-secondary)}.sonar-formula-eq .mono{font-family:var(--font-mono);font-size:var(--font-size-xs)}.sonar-result{color:var(--color-accent);font-weight:800;font-size:var(--font-size-lg)}.mono{font-family:var(--font-mono)}.sensor-demo-note{font-size:var(--font-size-sm);color:var(--color-text-muted);line-height:1.6;border-top:1px solid var(--color-border);padding-top:var(--space-4);margin-top:var(--space-2)}.wires-section{background:var(--color-bg-surface)}.wires-diagram-wrap{margin-top:var(--space-12);display:flex;flex-direction:column;align-items:center;gap:var(--space-3)}.wires-svg{width:100%;max-width:520px;height:auto;background:var(--color-bg-elevated);border:1px solid var(--color-border-strong);border-radius:var(--radius-lg);overflow:visible}.wires-hint{font-size:var(--font-size-sm);color:var(--color-text-muted);font-style:italic}.wires-detail-grid{display:grid;margin-top:var(--space-6);transition:grid-template-rows var(--duration-slow) var(--ease-out-expo);overflow:hidden}.wires-detail-inner{overflow:hidden;min-height:0}.wires-detail-panel{border:1px solid;border-radius:var(--radius-lg);padding:var(--space-6) var(--space-8);background:var(--color-bg-elevated);animation:fade-in .3s ease;display:flex;flex-direction:column;gap:var(--space-4)}.wires-detail-header{display:flex;align-items:center;gap:var(--space-3);flex-wrap:wrap}.wires-detail-badge{font-size:var(--font-size-xs);font-weight:700;letter-spacing:.1em;text-transform:uppercase;padding:3px var(--space-3);border-radius:var(--radius-sm);font-family:var(--font-mono)}.wires-detail-title{font-size:var(--font-size-lg);font-weight:700;letter-spacing:-.01em;color:var(--color-text-primary)}.wires-detail-body{color:var(--color-text-secondary);font-size:var(--font-size-base);line-height:1.7;max-width:var(--max-width-text)}.wires-summary{display:flex;gap:var(--space-4);margin-top:var(--space-8);flex-wrap:wrap}.wire-summary-card{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-5);background:var(--color-bg-elevated);border:1px solid var(--color-border-strong);border-radius:var(--radius-base);cursor:pointer;transition:all var(--duration-base) ease;font-family:var(--font-sans);font-size:var(--font-size-sm);font-weight:600;color:var(--color-text-secondary)}.wire-summary-card:hover{border-color:var(--wire-color);color:var(--color-text-primary)}.wire-summary-card.active{border-color:var(--wire-color);background:color-mix(in srgb,var(--wire-color) 10%,var(--color-bg-elevated));color:var(--color-text-primary)}.wire-summary-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}.wire-summary-label{font-family:var(--font-mono)}.footer{border-top:1px solid var(--color-border);padding-block:var(--space-8);background:var(--color-bg-base)}.footer-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:var(--space-4)}.footer-text{font-size:var(--font-size-sm);color:var(--color-text-muted)}.footer-sub{font-size:var(--font-size-sm);color:var(--color-text-muted);font-family:var(--font-mono)}