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:root{--bg:#f3f6f4;--surface:#fbfcfb;--surface-2:#e9eeeb;--ink:#17201b;--muted:#5a675f;--line:#cbd4ce;--accent:#087a4f;--accent-strong:#05613e;--accent-soft:#d5eee2;--danger:#b5473d;--shadow:0 28px 80px #2540301f;--radius-card:18px;--radius-control:12px;--header-height:68px;--duration-stagger:40ms;--duration-micro:80ms;--duration-quick:.15s;--duration-fast:.25s;--duration-medium:.35s;--duration-slow:.4s;--duration-very-slow:.5s;--ease-smooth-out:cubic-bezier(.22, 1, .36, 1);--ease-in-out:ease-in-out;--ease-out:ease-out;--ease-linear:linear;--ease-bounce:cubic-bezier(.34, 1.36, .64, 1);--ease-bounce-strong:cubic-bezier(.34, 3.85, .64, 1);--distance-micro:4px;--distance-small:6px;--distance-base:8px;--distance-medium:12px;--distance-large:30px;--scale-large:.96;--scale-medium:.97;--scale-small:.98;--scale-tiny:.99;--blur-small:2px;--blur-medium:3px;--blur-large:8px;--acc-expand:.25s;--acc-collapse:.25s;--acc-chevron:.25s;--acc-ease:cubic-bezier(.22, 1, .36, 1)}@media (prefers-color-scheme:dark){:root{--bg:#0f1512;--surface:#151e19;--surface-2:#202b25;--ink:#edf3ef;--muted:#aebbb3;--line:#334239;--accent:#52ce91;--accent-strong:#75dba7;--accent-soft:#173b2b;--danger:#ee8b7f;--shadow:0 30px 90px #00000057}}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--ink);font-family:var(--font-geist), Arial, sans-serif;-webkit-font-smoothing:antialiased;margin:0;line-height:1.55}button,input,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{color:inherit}:focus-visible{outline:3px solid color-mix(in srgb, var(--accent) 72%, transparent);outline-offset:3px}::selection{background:var(--accent-soft)}.site-header{z-index:20;height:var(--header-height);border-bottom:1px solid color-mix(in srgb, var(--line) 76%, transparent);background:color-mix(in srgb, var(--bg) 90%, 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minmax(520px,1.18fr);align-items:center;gap:clamp(44px,7vw,100px);padding:clamp(44px,7vh,76px) 0;display:grid}.hero-copy{align-self:center}.home-hero{grid-template-columns:minmax(0,1fr);align-items:start;gap:clamp(26px,3vw,38px);max-width:980px;min-height:auto;margin:0 auto;padding:clamp(24px,4vh,40px) 0 clamp(52px,7vh,76px)}.home-hero .hero-copy{align-self:start;max-width:760px;padding-top:0}.eyebrow{color:var(--accent);font:650 .76rem/1.2 var(--font-geist-mono), monospace;letter-spacing:.14em;text-transform:uppercase;margin:0 0 18px}h1,h2,h3{letter-spacing:-.045em;margin-top:0;line-height:1.04}h1{margin-bottom:22px;font-size:clamp(3.35rem,6vw,5.8rem);font-weight:690}.tool-page h1{font-size:clamp(2.7rem,5vw,4.9rem)}.hero-lede{max-width:48ch;color:var(--muted);margin:0;font-size:clamp(1rem,1.4vw,1.16rem)}.hero-note{color:var(--muted);align-items:center;gap:10px;margin-top:28px;font-size:.86rem;display:flex}.hero-note svg{color:var(--accent);flex:none}.tool-card{border:1px solid 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var(--font-geist-mono), monospace;letter-spacing:-.08em}.channel-pane span{color:var(--muted);font-size:.78rem}.channel-pane[data-live=true]{border-color:var(--accent);background:var(--accent-soft);box-shadow:inset 0 0 0 1px color-mix(in srgb, var(--accent) 18%, transparent);transform:translateY(-2px)}.center-line{background:var(--line);width:1px;position:relative}.center-line:after{content:"C";background:var(--surface);color:var(--muted);font:600 .7rem var(--font-geist-mono), monospace;padding:6px;position:absolute;inset:50% auto auto 50%;transform:translate(-50%,-50%)}.button-grid{grid-template-columns:repeat(3,1fr);gap:10px;display:grid}.btn{border:1px solid var(--line);border-radius:var(--radius-control);background:var(--surface);min-height:48px;color:var(--ink);cursor:pointer;transition:transform var(--duration-quick) var(--ease-out), border-color var(--duration-quick) var(--ease-out), background var(--duration-quick) 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monospace}input[type=range]{width:100%;accent-color:var(--accent)}.segment{border-radius:var(--radius-control);background:var(--surface-2);grid-template-columns:repeat(2,1fr);gap:6px;margin-top:18px;padding:5px;display:grid}.segment.three{grid-template-columns:repeat(3,1fr)}.segment button{min-height:38px;color:var(--muted);cursor:pointer;transition:background var(--duration-fast) var(--ease-smooth-out), color var(--duration-fast) var(--ease-smooth-out), transform var(--duration-quick) var(--ease-out);background:0 0;border:0;border-radius:8px;font-size:.82rem;font-weight:620}.segment button[aria-pressed=true]{background:var(--surface);color:var(--ink);box-shadow:0 2px 9px color-mix(in srgb, var(--ink) 8%, transparent)}.segment button:active{transform:scale(.98)}.stack{gap:10px;display:grid}.inline-actions{grid-template-columns:1fr 1fr;gap:10px;margin-top:14px;display:grid}.tool-alert{color:var(--muted);margin:16px 0 0;font-size:.82rem}.tool-error{color:var(--danger)}.auto-progress{grid-template-columns:repeat(3,1fr);gap:6px;margin-top:14px;display:grid}.auto-progress span{background:var(--surface-2);min-height:36px;color:var(--muted);text-align:center;font:570 .67rem/1.25 var(--font-geist-mono), monospace;transition:color var(--duration-fast) var(--ease-smooth-out), background var(--duration-fast) var(--ease-smooth-out);border-radius:9px;padding:8px 7px}.auto-progress span[data-state=current]{background:var(--accent);color:#f7fff9}.auto-progress span[data-state=done]{background:var(--accent-soft);color:var(--accent-strong)}.test-complete{border:1px solid color-mix(in srgb, var(--accent) 32%, var(--line));border-radius:var(--radius-control);background:var(--accent-soft);margin-top:14px;padding:16px}.test-complete>strong{color:var(--accent-strong);font-size:1rem;display:block}.test-complete p{color:var(--muted);margin:5px 0 0;font-size:.82rem}.completion-actions{grid-template-columns:1.2fr 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var(--line);background:var(--surface-2);min-height:36px;color:var(--muted);cursor:pointer;transition:color var(--duration-quick) var(--ease-out), border-color var(--duration-quick) var(--ease-out), background var(--duration-quick) var(--ease-out), transform var(--duration-quick) var(--ease-out);border-radius:9px;flex:30%;padding:7px 10px;font-size:.72rem;font-weight:620}.device-options button:hover{border-color:var(--accent);color:var(--ink)}.device-options button:active{transform:scale(.98)}.device-options button[aria-pressed=true]{border-color:var(--accent);background:var(--accent-soft);color:var(--accent-strong)}.device-options button:disabled{cursor:not-allowed;opacity:.5}.test-module{scroll-margin-top:calc(var(--header-height) + 18px)}.module-heading{justify-content:space-between;align-items:baseline;gap:16px;margin-bottom:12px;display:flex}.module-heading h3{letter-spacing:-.025em;margin:0;font-size:.98rem}.module-heading span,.module-heading output,.module-heading a{color:var(--muted);font:560 .68rem/1.25 var(--font-geist-mono), monospace}.module-heading a{color:var(--accent-strong);font-family:var(--font-geist), Arial, sans-serif;font-weight:680}.module-heading.compact{margin-bottom:9px}.quick-test-grid{grid-template-columns:1fr 1fr;gap:10px;margin-top:20px;display:grid}.quick-test{min-width:0;scroll-margin-top:calc(var(--header-height) + 18px);border:1px solid color-mix(in srgb, var(--line) 82%, transparent);border-radius:var(--radius-control);background:var(--surface-2);padding:14px}.quick-test input[type=range]{margin:3px 0 12px;display:block}.quick-test .btn{min-height:40px;padding:7px 9px;font-size:.75rem}.quick-actions{grid-template-columns:1fr 1fr;gap:7px;display:grid}.frequency-presets{scroll-margin-top:calc(var(--header-height) + 18px);border:1px solid var(--line);border-radius:var(--radius-control);margin-top:10px;padding:15px}.preset-grid{grid-template-columns:repeat(4,1fr);gap:7px;display:grid}.preset-grid .btn{flex-direction:column;gap:2px;min-width:0;min-height:58px;padding:8px 5px;font-size:.7rem}.preset-grid .btn span{color:var(--muted);font-size:.63rem;font-weight:570}.preset-grid .btn strong{font-family:var(--font-geist-mono), monospace;font-size:.72rem}.device-note{color:var(--muted);align-items:flex-start;gap:8px;margin:16px 0 0;font-size:.76rem;display:flex}.device-note svg{color:var(--accent);flex:none}.frequency-input{grid-template-columns:1fr auto;align-items:center;gap:10px;margin-bottom:16px;display:grid}.frequency-input input{border:1px solid var(--line);border-radius:var(--radius-control);background:var(--surface-2);min-width:0;height:58px;color:var(--ink);font:650 1.35rem var(--font-geist-mono), monospace;padding:0 16px}.frequency-input span{color:var(--muted);font:600 .9rem var(--font-geist-mono), monospace}.result-score{font:680 clamp(2.8rem, 7vw, 4.6rem)/1 var(--font-geist-mono), monospace;letter-spacing:-.08em;color:var(--accent);margin:10px 0 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