:root,[data-theme=light]{color-scheme:light;--brand-burgundy: #861a27;--brand-vermilion: #e03d27;--brand-vermilion-hover:#c4331e;--brand-vermilion-soft: #ffeedb;--brand-vermilion-text: #FFFFFF;--bg-canvas: #f7f7f4;--bg-surface: #ffffff;--bg-surface-raised: #f0efe9;--bg-surface-inset: #eae9e1;--bg-keycap: #ffffff;--bg-keycap-hover: #f2f1ea;--text-primary: #26251e;--text-secondary: #5c5a52;--text-muted: #7d7a71;--text-inverse: #ffffff;--border-subtle: #e2e0d8;--border-component: #c5c2b6;--border-strong: #8c887b;--state-tested-bg: #e6f4ea;--state-tested-border: #9fc9a2;--state-tested-text: #1e4620;--state-tested-mark: #2d7a35;--state-pressed-bg: #faeae1;--state-pressed-border: #dfa88f;--state-pressed-text: #5a2b16;--state-pressed-mark: #c25c34;--state-error-bg: #fbe8ec;--state-error-border: #cf2d56;--state-error-text: #680b22;--state-error-mark: #cf2d56;--state-info-bg: #eaf1f8;--state-info-border: #9fbbe0;--state-info-text: #1c3d5a;--state-warn-bg: #fdf5e2;--state-warn-border: #e0b658;--state-warn-text: #614503;--focus-ring: #e03d27;--focus-ring-offset: #ffffff;--shadow-sm: 0 1px 2px rgba(38, 37, 30, .05);--shadow-md: 0 3px 6px -1px rgba(38, 37, 30, .07), 0 2px 4px -2px rgba(38, 37, 30, .05);--shadow-cap: 0 2px 0 0 #d5d2c7, inset 0 1px 0 rgba(255, 255, 255, .8);--shadow-cap-pressed: inset 0 2px 4px rgba(38, 37, 30, .15)}[data-theme=dark]{color-scheme:dark;--brand-burgundy: #a82939;--brand-vermilion: #FF4D36;--brand-vermilion-hover:#ff6752;--brand-vermilion-soft: #381a15;--brand-vermilion-text: #ffffff;--bg-canvas: #181A20;--bg-surface: #222630;--bg-surface-raised: #2a303c;--bg-surface-inset: #13151a;--bg-keycap: #262b37;--bg-keycap-hover: #313746;--text-primary: #F3F4F6;--text-secondary: #9CA3AF;--text-muted: #6B7280;--text-inverse: #111827;--border-subtle: #2E3545;--border-component: #434d63;--border-strong: #6B7280;--state-tested-bg: #132b1e;--state-tested-border: #4ade80;--state-tested-text: #bbf7d0;--state-tested-mark: #22c55e;--state-pressed-bg: #3a221b;--state-pressed-border: #f97316;--state-pressed-text: #ffedd5;--state-pressed-mark: #fb923c;--state-error-bg: #38151b;--state-error-border: #f43f5e;--state-error-text: #ffe4e6;--state-error-mark: #f43f5e;--state-info-bg: #182639;--state-info-border: #60a5fa;--state-info-text: #dbeafe;--state-warn-bg: #332512;--state-warn-border: #facc15;--state-warn-text: #fef08a;--focus-ring: #FF4D36;--focus-ring-offset: #181A20;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .4);--shadow-cap: 0 2px 0 0 #14171d, inset 0 1px 0 rgba(255, 255, 255, .05);--shadow-cap-pressed: inset 0 2px 4px rgba(0, 0, 0, .6)}:root{--font-sans: "Inter", "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, monospace;--fs-2xs: 11px;--fs-xs: 12px;--fs-sm: 13px;--fs-base:14px;--fs-md: 16px;--fs-lg: 18px;--fs-xl: 20px;--fs-2xl: 24px;--fs-3xl: 30px;--fw-regular: 400;--fw-medium: 500;--fw-semibold:600;--fw-bold: 700;--sp-0-5: 2px;--sp-1: 4px;--sp-1-5: 6px;--sp-2: 8px;--sp-3: 12px;--sp-4: 16px;--sp-5: 20px;--sp-6: 24px;--sp-8: 32px;--sp-10: 40px;--sp-12: 48px;--radius-xs: 3px;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--radius-full: 9999px;--key-unit: clamp(30px, 2.2vw + 12px, 50px);--key-gap: 4px;--key-row-gap: 6px;--duration-instant: 50ms;--duration-fast: .12s;--duration-normal: .2s;--ease-spring: cubic-bezier(.175, .885, .32, 1.275);--ease-standard: cubic-bezier(.4, 0, .2, 1)}@media (prefers-reduced-motion: reduce){:root{--duration-instant: 0ms;--duration-fast: 0ms;--duration-normal: 0ms}}*,*:before,*:after{box-sizing:border-box}.keycap{position:relative;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;user-select:none;cursor:default;width:calc(var(--key-unit) * var(--key-w, 1) - var(--key-gap));height:calc(var(--key-unit) * var(--key-h, 1) - var(--key-gap));background:var(--bg-keycap);color:var(--text-primary);border:1px solid var(--border-component);border-radius:var(--radius-sm);box-shadow:var(--shadow-cap);font-family:var(--font-mono);font-size:var(--fs-xs);font-weight:var(--fw-medium);line-height:1.1;text-align:center;transition:background-color var(--duration-instant) var(--ease-standard),border-color var(--duration-instant) var(--ease-standard),transform var(--duration-instant) var(--ease-spring),box-shadow var(--duration-instant) var(--ease-standard)}.keycap__legend{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px}.keycap__legend-shift{font-size:var(--fs-2xs);color:var(--text-muted)}.keycap[data-state=default],.keycap:not([data-state]){background:var(--bg-keycap);border-color:var(--border-component);color:var(--text-primary)}@media (hover: hover) and (pointer: fine){.keycap[data-state=default]:hover,.keycap:not([data-state]):hover{background:var(--bg-keycap-hover);border-color:var(--border-strong)}}.keycap[data-state=pressed]{background:var(--state-pressed-bg);border-color:var(--state-pressed-border);color:var(--state-pressed-text);box-shadow:var(--shadow-cap-pressed);transform:translateY(2px);z-index:2}.keycap[data-state=tested]{background:var(--state-tested-bg);border-color:var(--state-tested-border);color:var(--state-tested-text)}.keycap[data-state=tested]:after{content:"";position:absolute;top:3px;right:3px;width:5px;height:5px;border-radius:var(--radius-full);background:var(--state-tested-mark)}.keycap[data-state=error],.keycap[data-state=chatter]{background:var(--state-error-bg);border-color:var(--state-error-border);color:var(--state-error-text)}.keycap[data-state=chatter] .keycap__chatter-badge{position:absolute;top:-4px;right:-4px;background:var(--state-error-mark);color:var(--text-inverse);font-size:9px;font-weight:var(--fw-bold);padding:0 4px;border-radius:var(--radius-full);box-shadow:var(--shadow-sm)}.keycap[data-state=untestable]{background:var(--state-warn-bg);border:1px dashed var(--state-warn-border);color:var(--state-warn-text);cursor:not-allowed;opacity:.85}.keycap:focus-visible,button:focus-visible,[role=tab]:focus-visible,select:focus-visible,input:focus-visible{outline:2px solid var(--focus-ring);outline-offset:2px;box-shadow:0 0 0 2px var(--focus-ring-offset)}.keymap-container{display:inline-flex;flex-direction:column;gap:var(--key-row-gap);padding:var(--sp-4);background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}.keymap-row{display:flex;gap:var(--key-gap);align-items:center}.keymap-spacer{flex-shrink:0;width:calc(var(--key-unit) * var(--spacer-w, .25) - var(--key-gap));height:var(--key-unit);pointer-events:none}.landing-shell{min-height:100vh;display:flex;flex-direction:column;background-color:var(--bg-canvas);color:var(--text-primary);font-family:var(--font-sans)}.landing-container{width:100%;max-width:1200px;margin-inline:auto;padding-inline:var(--sp-4)}.site-header{height:56px;border-bottom:1px solid var(--border-subtle);background-color:var(--bg-surface);position:sticky;top:0;z-index:50;backdrop-filter:blur(8px)}.site-header__inner{display:flex;align-items:center;justify-content:space-between;height:100%;gap:var(--sp-4)}.brand-link{display:inline-flex;align-items:center;gap:var(--sp-2);text-decoration:none;color:inherit;border-radius:var(--radius-sm)}.brand-link:focus-visible{outline:2px solid var(--focus-ring);outline-offset:4px}.brand-logo-svg{height:28px;width:auto;display:block}[data-theme=dark] .brand-logo-svg .brand-burgundy-part,[data-theme=dark] .brand-logo-svg .brand-wordmark{fill:#f3f4f6}.site-header__actions{display:flex;align-items:center;gap:var(--sp-2-5, 10px)}.lang-switcher{position:relative;display:inline-flex;align-items:center}.lang-switcher__select{appearance:none;-webkit-appearance:none;background-color:var(--bg-surface-raised);color:var(--text-primary);border:1px solid var(--border-component);border-radius:var(--radius-sm);padding:4px 22px 4px 8px;font-family:var(--font-mono);font-size:var(--fs-xs);font-weight:var(--fw-semibold);letter-spacing:.04em;text-transform:uppercase;cursor:pointer;line-height:1.4;min-height:36px}.lang-switcher__select:focus-visible{outline:2px solid var(--focus-ring);outline-offset:2px}.lang-switcher__chevron{position:absolute;right:6px;top:50%;transform:translateY(-50%);pointer-events:none;width:10px;height:10px;color:var(--text-secondary)}.showcase-hero-section{padding-block:var(--sp-5) var(--sp-6);border-bottom:1px solid var(--border-subtle);background:radial-gradient(circle at 50% 20%,var(--bg-surface) 0%,var(--bg-canvas) 100%);position:relative;overflow:hidden}.showcase-layout{display:grid;grid-template-columns:1fr;gap:var(--sp-6);align-items:center}@media (min-width: 960px){.showcase-layout{grid-template-columns:1.25fr 1fr;gap:var(--sp-8)}}.showcase-stage{position:relative;width:100%;height:340px;display:flex;align-items:center;justify-content:center;background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);overflow:hidden}@media (min-width: 640px){.showcase-stage{height:380px}}.showcase-stage__media-container{position:relative;width:100%;height:100%;display:flex;align-items:center;justify-content:center;padding:var(--sp-4)}.showcase-stage__img{max-width:90%;max-height:85%;width:auto;height:auto;object-fit:contain;filter:drop-shadow(0 16px 24px rgba(0,0,0,.25));opacity:1;transform:scale(1);transition:opacity .22s var(--ease-standard),transform .22s var(--ease-spring)}.showcase-stage__img[data-transitioning=true]{opacity:0;transform:scale(.96)}.showcase-info{display:flex;flex-direction:column;gap:var(--sp-3);text-align:left}.showcase-info__eyebrow-row{display:flex;align-items:center;gap:var(--sp-2)}.showcase-info__badge-live{display:inline-flex;align-items:center;gap:5px;padding:3px 8px;border-radius:var(--radius-full);background-color:var(--state-tested-bg);border:1px solid var(--state-tested-border);color:var(--state-tested-text);font-family:var(--font-mono);font-size:var(--fs-2xs);font-weight:var(--fw-bold);text-transform:uppercase;letter-spacing:.04em}.showcase-info__badge-live-dot{width:6px;height:6px;border-radius:var(--radius-full);background-color:var(--state-tested-mark);box-shadow:0 0 0 2px #2d7a3533}.showcase-info__title{font-size:clamp(2rem,2.5vw + 1rem,2.85rem);font-weight:var(--fw-bold);line-height:1.1;letter-spacing:-.025em;color:var(--text-primary);margin:0;transition:opacity .18s ease}.showcase-info__desc{font-size:var(--fs-base);line-height:1.5;color:var(--text-secondary);margin:0;max-width:48ch;min-height:48px;transition:opacity .18s ease}.showcase-info__specs-list{display:flex;align-items:center;gap:var(--sp-2);flex-wrap:wrap;margin-top:2px}.showcase-spec-chip{font-family:var(--font-mono);font-size:var(--fs-2xs);color:var(--text-muted);background-color:var(--bg-surface-raised);border:1px solid var(--border-subtle);padding:2px 8px;border-radius:var(--radius-xs);font-variant-numeric:tabular-nums lining-nums}.showcase-cta-group{display:flex;flex-direction:column;gap:var(--sp-2);margin-top:var(--sp-2)}.btn-showcase-primary{display:inline-flex;align-items:center;justify-content:center;gap:var(--sp-2);padding:12px 24px;min-height:48px;background-color:var(--brand-vermilion);color:var(--brand-vermilion-text);font-size:var(--fs-base);font-weight:var(--fw-semibold);border-radius:var(--radius-md);text-decoration:none;border:none;cursor:pointer;box-shadow:0 1px 3px #e03d2740;transition:background-color var(--duration-fast) var(--ease-standard),transform var(--duration-fast) var(--ease-spring);width:fit-content}.btn-showcase-primary:hover{background-color:var(--brand-vermilion-hover);transform:translateY(-1px)}.btn-showcase-primary:focus-visible{outline:2px solid var(--focus-ring);outline-offset:2px}.showcase-privacy-guarantee{display:inline-flex;align-items:center;gap:5px;font-family:var(--font-mono);font-size:var(--fs-2xs);color:var(--text-muted)}.peripheral-selector-bar{margin-top:var(--sp-6)}.peripheral-selector-bar__heading{font-family:var(--font-mono);font-size:var(--fs-2xs);font-weight:var(--fw-bold);text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);margin-bottom:var(--sp-2-5, 10px)}.peripheral-selector-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--sp-3)}@media (min-width: 640px){.peripheral-selector-grid{grid-template-columns:repeat(4,1fr)}}.selector-tile{display:flex;align-items:center;gap:var(--sp-3);padding:var(--sp-3);min-height:64px;background-color:var(--bg-surface);border:1.5px solid var(--border-subtle);border-radius:var(--radius-md);cursor:pointer;text-align:left;user-select:none;transition:all var(--duration-fast) var(--ease-standard);position:relative}.selector-tile:hover{background-color:var(--bg-surface-raised);border-color:var(--border-strong)}.selector-tile:focus-visible{outline:2px solid var(--focus-ring);outline-offset:2px}.selector-tile[aria-selected=true]{background-color:var(--bg-surface);border-color:var(--brand-vermilion);box-shadow:0 0 0 1px var(--brand-vermilion),var(--shadow-sm)}.selector-tile__icon-box{width:36px;height:36px;border-radius:var(--radius-sm);background-color:var(--bg-surface-raised);border:1px solid var(--border-subtle);display:inline-flex;align-items:center;justify-content:center;color:var(--text-secondary);flex-shrink:0;transition:color var(--duration-fast) var(--ease-standard),background-color var(--duration-fast) var(--ease-standard)}.selector-tile[aria-selected=true] .selector-tile__icon-box{background-color:var(--brand-vermilion-soft);border-color:var(--brand-vermilion);color:var(--brand-vermilion)}.selector-tile__text{display:flex;flex-direction:column;gap:1px}.selector-tile__title{font-size:var(--fs-sm);font-weight:var(--fw-semibold);color:var(--text-primary);line-height:1.2}.selector-tile__meta{font-family:var(--font-mono);font-size:11px;color:var(--text-muted)}.selector-tile[aria-selected=true] .selector-tile__title{color:var(--brand-vermilion)}.directory-section{padding-block:var(--sp-8) var(--sp-12)}.directory-header{text-align:left;margin-bottom:var(--sp-6)}.directory-header__title{font-size:var(--fs-xl);font-weight:var(--fw-bold);color:var(--text-primary);margin:0 0 var(--sp-1)}.directory-header__desc{font-size:var(--fs-sm);color:var(--text-secondary);margin:0}.directory-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:var(--sp-5)}.directory-card{display:flex;flex-direction:column;background-color:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:var(--sp-5);text-decoration:none;color:inherit;box-shadow:var(--shadow-sm);transition:border-color var(--duration-fast) var(--ease-standard),transform var(--duration-fast) var(--ease-spring)}.directory-card:hover{border-color:var(--brand-vermilion);transform:translateY(-2px)}.directory-card:focus-visible{outline:2px solid var(--focus-ring);outline-offset:2px}.directory-card__title{font-size:var(--fs-md);font-weight:var(--fw-semibold);color:var(--text-primary);margin:0 0 var(--sp-1-5);display:flex;align-items:center;justify-content:space-between}.directory-card__desc{font-size:var(--fs-sm);color:var(--text-secondary);line-height:1.45;margin:0 0 var(--sp-4);flex-grow:1}.directory-card__action{font-family:var(--font-mono);font-size:var(--fs-xs);font-weight:var(--fw-semibold);color:var(--brand-vermilion);display:inline-flex;align-items:center;gap:4px}.value-props-section{padding-block:var(--sp-6) var(--sp-8);border-top:1px solid var(--border-subtle);background-color:var(--bg-surface-raised)}.value-props-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:var(--sp-5)}.value-prop-item{display:flex;flex-direction:column;gap:var(--sp-1-5)}.value-prop-item__title{font-size:var(--fs-base);font-weight:var(--fw-semibold);color:var(--text-primary);display:flex;align-items:center;gap:var(--sp-2)}.value-prop-item__desc{font-size:var(--fs-sm);color:var(--text-secondary);line-height:1.45;margin:0}.site-footer{padding-block:var(--sp-6);border-top:1px solid var(--border-subtle);background-color:var(--bg-surface);text-align:center;font-size:var(--fs-xs);color:var(--text-muted)}.site-footer__guarantee{display:inline-flex;align-items:center;gap:var(--sp-2);margin-bottom:var(--sp-2);font-family:var(--font-mono);font-weight:var(--fw-medium);color:var(--text-secondary)}@media (prefers-reduced-motion: reduce){.showcase-stage__img{transition:none!important;transform:none!important}.showcase-info__title,.showcase-info__desc{transition:none!important}}.mouse-tester-shell{min-height:100vh;display:flex;flex-direction:column;background-color:var(--bg-canvas);color:var(--text-primary);font-family:var(--font-sans)}.mouse-tester-container{width:100%;max-width:1240px;margin-inline:auto;padding:var(--sp-4)}.mouse-toolbar{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-3);padding:var(--sp-2-5, 10px) var(--sp-4);background-color:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-md);margin-bottom:var(--sp-4);flex-wrap:wrap}.mouse-toolbar__group{display:flex;align-items:center;gap:var(--sp-3);flex-wrap:wrap}.mouse-stat-badge{display:inline-flex;align-items:center;gap:var(--sp-1-5);font-family:var(--font-mono);font-size:var(--fs-xs);padding:3px 8px;background-color:var(--bg-surface-raised);border:1px solid var(--border-subtle);border-radius:var(--radius-xs);color:var(--text-secondary)}.mouse-stat-badge strong{color:var(--text-primary);font-variant-numeric:tabular-nums lining-nums}.mouse-stat-badge--glitch{background-color:var(--state-error-bg);border-color:var(--state-error-border);color:var(--state-error-text);font-weight:var(--fw-semibold)}.mouse-workstation-grid{display:grid;grid-template-columns:1fr;gap:var(--sp-5);align-items:start}@media (min-width: 960px){.mouse-workstation-grid{grid-template-columns:1.25fr 1fr}}.mouse-bench-card{background-color:var(--bg-surface);border:1px solid var(--border-component);border-radius:var(--radius-lg);padding:var(--sp-6);box-shadow:var(--shadow-sm);display:flex;flex-direction:column;align-items:center;justify-content:center;position:relative;overflow:hidden;user-select:none}.mouse-bench-card__header{width:100%;display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--sp-4);font-family:var(--font-mono);font-size:var(--fs-xs);color:var(--text-muted)}.mouse-chassis{position:relative;width:260px;height:420px;background-color:var(--bg-surface-raised);border:2px solid var(--border-strong);border-radius:90px 90px 80px 80px;box-shadow:var(--shadow-md),inset 0 2px 4px #0000000d;display:flex;flex-direction:column;align-items:center;padding-top:10px}.mouse-chassis__top-cluster{width:240px;height:180px;display:grid;grid-template-columns:1fr 44px 1fr;gap:6px;align-items:stretch;position:relative}.mouse-btn{background-color:var(--bg-keycap);border:1.5px solid var(--border-component);border-radius:var(--radius-sm);box-shadow:var(--shadow-cap);display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;padding:var(--sp-2);transition:background-color var(--duration-instant) var(--ease-standard),border-color var(--duration-instant) var(--ease-standard),transform var(--duration-instant) var(--ease-spring),box-shadow var(--duration-instant) var(--ease-standard);position:relative}.mouse-btn__label{font-family:var(--font-mono);font-size:var(--fs-xs);font-weight:var(--fw-semibold);color:var(--text-primary)}.mouse-btn__counter{font-family:var(--font-mono);font-size:var(--fs-2xs);color:var(--text-muted);font-variant-numeric:tabular-nums lining-nums;margin-top:2px}.mouse-btn--left{border-top-left-radius:75px;border-bottom-left-radius:12px}.mouse-btn--right{border-top-right-radius:75px;border-bottom-right-radius:12px}.mouse-wheel-hub{display:flex;flex-direction:column;align-items:center;justify-content:space-between;padding:4px 0;gap:4px}.mouse-btn--middle{width:38px;height:70px;border-radius:19px;background-color:var(--bg-surface);border:2px solid var(--border-component);display:flex;flex-direction:column;align-items:center;justify-content:center;box-shadow:inset 0 2px 4px #0000001a;position:relative}.mouse-wheel-tread{width:18px;height:2px;background-color:var(--border-strong);margin-block:2px;border-radius:1px}.scroll-direction-indicator{font-family:var(--font-mono);font-size:10px;font-weight:var(--fw-bold);color:var(--text-muted);display:inline-flex;align-items:center;justify-content:center;padding:2px 4px;border-radius:var(--radius-xs);transition:all var(--duration-instant) var(--ease-standard)}.scroll-direction-indicator[data-active=true]{background-color:var(--brand-vermilion-soft);color:var(--brand-vermilion);transform:scale(1.1)}.mouse-side-cluster{position:absolute;left:-20px;top:170px;display:flex;flex-direction:column;gap:8px}.mouse-btn--side{width:22px;height:52px;background-color:var(--bg-keycap);border:1.5px solid var(--border-component);border-radius:12px 0 0 12px;box-shadow:var(--shadow-sm);display:flex;align-items:center;justify-content:center;writing-mode:vertical-rl;font-family:var(--font-mono);font-size:9px;font-weight:var(--fw-semibold);color:var(--text-secondary);cursor:pointer;transition:all var(--duration-instant) var(--ease-standard)}.mouse-chassis__palm-rest{width:220px;height:210px;margin-top:10px;border-radius:20px 20px 65px 65px;background:radial-gradient(circle at 50% 30%,var(--bg-surface) 0%,var(--bg-surface-raised) 100%);border:1px solid 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4px;border-radius:2px;font-size:9px;font-weight:var(--fw-bold);text-transform:uppercase}.mouse-event-badge--down{background-color:var(--state-pressed-bg);color:var(--state-pressed-text)}.mouse-event-badge--up{background-color:var(--state-tested-bg);color:var(--state-tested-text)}.mouse-event-badge--glitch{background-color:var(--state-error-bg);color:var(--state-error-text)}.screen-tester-shell{min-height:100vh;display:flex;flex-direction:column;background-color:var(--bg-canvas);color:var(--text-primary);font-family:var(--font-sans)}.screen-tester-container{width:100%;max-width:1240px;margin-inline:auto;padding:var(--sp-4)}.screen-toolbar{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-3);padding:var(--sp-2-5, 10px) var(--sp-4);background-color:var(--bg-surface);border:1px solid 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var(--ease-spring)}.btn-launch-fullscreen:hover{background-color:var(--brand-vermilion-hover);transform:translateY(-1px)}.btn-launch-fullscreen:focus-visible{outline:2px solid var(--focus-ring);outline-offset:2px}.color-swatch-row{display:grid;grid-template-columns:repeat(5,1fr);gap:var(--sp-2);margin-top:var(--sp-1)}.color-swatch-item{display:flex;flex-direction:column;align-items:center;gap:4px}.color-swatch-dot{width:100%;height:38px;border-radius:var(--radius-xs);border:1px solid var(--border-component);box-shadow:inset 0 1px 2px #0000001a;cursor:pointer;transition:transform var(--duration-instant) var(--ease-spring)}.color-swatch-dot:hover{transform:scale(1.04)}.color-swatch-label{font-family:var(--font-mono);font-size:var(--fs-2xs);color:var(--text-muted);text-transform:uppercase}.pixel-diagnostic-note{background-color:var(--bg-surface-raised);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);padding:var(--sp-3);font-size:var(--fs-xs);color:var(--text-secondary);line-height:1.45;display:flex;flex-direction:column;gap:4px}.pixel-diagnostic-note strong{color:var(--text-primary)}.fullscreen-canvas{position:fixed;inset:0;width:100vw;height:100vh;z-index:9999;cursor:none;display:flex;align-items:center;justify-content:center;transition:background-color .15s ease-out}.fullscreen-canvas[data-cursor=visible]{cursor:default}.fullscreen-hud{position:fixed;bottom:32px;left:50%;transform:translate(-50%);background-color:#141820d9;backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.18);border-radius:var(--radius-full);padding:8px 18px;display:flex;align-items:center;gap:var(--sp-3);box-shadow:0 12px 36px #00000080;opacity:1;visibility:visible;transition:opacity .25s ease,visibility .25s 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lining-nums}.audio-tester-shell{min-height:100vh;display:flex;flex-direction:column;background-color:var(--bg-canvas);color:var(--text-primary);font-family:var(--font-sans)}.audio-tester-container{width:100%;max-width:1240px;margin-inline:auto;padding:var(--sp-4)}.audio-toolbar{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-3);padding:var(--sp-2-5, 10px) var(--sp-4);background-color:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-md);margin-bottom:var(--sp-4);flex-wrap:wrap}.audio-toolbar__group{display:flex;align-items:center;gap:var(--sp-3);flex-wrap:wrap}.audio-stat-badge{display:inline-flex;align-items:center;gap:var(--sp-1-5);font-family:var(--font-mono);font-size:var(--fs-xs);padding:3px 8px;background-color:var(--bg-surface-raised);border:1px solid var(--border-subtle);border-radius:var(--radius-xs);color:var(--text-secondary)}.audio-stat-badge strong{color:var(--text-primary);font-variant-numeric:tabular-nums 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var(--border-subtle);border-radius:var(--radius-md);position:relative;overflow:hidden;display:flex;align-items:center;justify-content:space-between;padding-inline:var(--sp-6);user-select:none}.soundstage-ear-pod{display:flex;flex-direction:column;align-items:center;gap:4px;z-index:2}.soundstage-ear-pod__speaker{width:48px;height:48px;border-radius:var(--radius-full);background-color:var(--bg-surface);border:2px solid var(--border-component);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-family:var(--font-mono);font-size:var(--fs-xs);font-weight:var(--fw-bold);box-shadow:var(--shadow-sm);transition:all var(--duration-fast) var(--ease-standard)}.soundstage-ear-pod[data-active=true] .soundstage-ear-pod__speaker{border-color:var(--brand-vermilion);color:var(--brand-vermilion);box-shadow:0 0 0 4px 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var(--border-subtle);border-radius:var(--radius-md);padding:var(--sp-4);display:flex;flex-direction:column;gap:var(--sp-2)}.vu-meter-scale{display:flex;justify-content:space-between;font-family:var(--font-mono);font-size:10px;color:var(--text-muted)}.vu-meter-track{width:100%;height:18px;background-color:var(--bg-surface-raised);border-radius:var(--radius-xs);display:flex;gap:2px;padding:2px;overflow:hidden}.vu-meter-segment{flex:1;border-radius:1px;background-color:var(--border-subtle);transition:background-color 40ms linear}.vu-meter-segment[data-active=true].vu--safe{background-color:#22c55e}.vu-meter-segment[data-active=true].vu--warn{background-color:#eab308}.vu-meter-segment[data-active=true].vu--clip{background-color:#ef4444;box-shadow:0 0 4px #ef444499}.vu-meter-footer{display:flex;align-items:center;justify-content:space-between;font-family:var(--font-mono);font-size:var(--fs-xs);color:var(--text-secondary)}.vu-meter-db-value{color:var(--text-primary);font-weight:var(--fw-bold);font-variant-numeric:tabular-nums lining-nums}.loopback-toggle-row{display:flex;align-items:center;justify-content:space-between;padding-top:var(--sp-2);border-top:1px solid var(--border-subtle);font-size:var(--fs-xs);color:var(--text-secondary)}.toggle-switch{position:relative;display:inline-block;width:36px;height:20px}.toggle-switch input{opacity:0;width:0;height:0}.toggle-slider{position:absolute;cursor:pointer;inset:0;background-color:var(--border-component);border-radius:20px;transition:.15s}.toggle-slider:before{position:absolute;content:"";height:14px;width:14px;left:3px;bottom:3px;background-color:#fff;border-radius:50%;transition:.15s}input:checked+.toggle-slider{background-color:var(--brand-vermilion)}input:checked+.toggle-slider:before{transform:translate(16px)}html,body{margin:0;padding:0;background-color:var(--bg-canvas);color:var(--text-primary);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.5}#root{min-height:100vh;display:flex;flex-direction:column}.app-header{background:var(--bg-surface);border-bottom:1px solid var(--border-subtle);position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm)}.app-header__inner{max-width:1440px;margin:0 auto;padding:var(--sp-3) var(--sp-6);display:flex;align-items:center;justify-content:space-between}.brand-badge{display:inline-flex;align-items:center;gap:var(--sp-2);text-decoration:none;font-weight:var(--fw-bold);font-size:var(--fs-lg);color:var(--text-primary)}.brand-badge__spark{color:var(--brand-vermilion);font-size:1.3em;line-height:1}.brand-badge__title{letter-spacing:-.02em}.brand-badge__tag{font-size:var(--fs-2xs);background:var(--brand-vermilion-soft);color:var(--brand-vermilion);padding:2px 8px;border-radius:var(--radius-full);font-weight:var(--fw-semibold);text-transform:uppercase;letter-spacing:.05em}.nav-links{display:flex;align-items:center;gap:var(--sp-1)}.nav-item{padding:6px 14px;border-radius:var(--radius-sm);font-size:var(--fs-sm);font-weight:var(--fw-medium);color:var(--text-secondary);text-decoration:none;border:none;background:transparent;cursor:pointer;transition:all var(--duration-fast) var(--ease-standard)}.nav-item:hover{color:var(--text-primary);background:var(--bg-surface-raised)}.nav-item--active{color:var(--brand-vermilion);background:var(--brand-vermilion-soft);font-weight:var(--fw-semibold)}.header-tools{display:flex;align-items:center;gap:var(--sp-2)}.btn-icon{background:var(--bg-surface-raised);border:1px solid var(--border-component);border-radius:var(--radius-md);padding:6px 10px;font-size:var(--fs-sm);color:var(--text-primary);cursor:pointer;display:inline-flex;align-items:center;gap:var(--sp-1);transition:all var(--duration-fast) var(--ease-standard)}.btn-icon:hover{background:var(--bg-surface-inset)}.toolbar-panel{background:var(--bg-surface);border-bottom:1px solid var(--border-subtle);padding:var(--sp-3) var(--sp-6)}.toolbar-panel__inner{max-width:1440px;margin:0 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var(--border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:var(--sp-4)}.inspector-card__header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--sp-3);padding-bottom:var(--sp-2);border-bottom:1px solid var(--border-subtle)}.inspector-badge{font-size:var(--fs-xs);font-weight:var(--fw-bold);text-transform:uppercase;letter-spacing:.05em;color:var(--text-primary)}.inspector-status-dot{width:8px;height:8px;border-radius:var(--radius-full);background:var(--brand-vermilion);box-shadow:0 0 6px var(--brand-vermilion)}.inspector-card__title{font-size:var(--fs-xs);font-weight:var(--fw-semibold);color:var(--text-secondary)}.inspector-count{font-family:var(--font-mono);font-size:var(--fs-2xs);color:var(--text-muted)}.inspector-grid{display:grid;grid-template-columns:1fr;gap:6px}.inspector-row{display:flex;align-items:center;justify-content:space-between;font-size:var(--fs-xs)}.inspector-label{color:var(--text-muted)}.inspector-value{font-family:var(--font-mono);font-variant-numeric:tabular-nums lining-nums;font-weight:var(--fw-semibold);color:var(--text-primary)}.inspector-tag{padding:1px 6px;border-radius:var(--radius-xs);font-size:var(--fs-2xs)}.inspector-tag--keydown{background:var(--state-pressed-bg);color:var(--state-pressed-text);border:1px solid var(--state-pressed-border)}.inspector-tag--keyup{background:var(--state-tested-bg);color:var(--state-tested-text);border:1px solid var(--state-tested-border)}.stream-container{max-height:180px;overflow-y:auto;border:1px solid var(--border-subtle);border-radius:var(--radius-sm);background:var(--bg-surface-inset);padding:var(--sp-1)}.stream-empty{text-align:center;padding:var(--sp-6) var(--sp-2);font-size:var(--fs-xs);color:var(--text-muted)}.stream-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}.stream-item{display:flex;align-items:center;justify-content:space-between;padding:3px 6px;background:var(--bg-surface);border-radius:var(--radius-xs);font-family:var(--font-mono);font-variant-numeric:tabular-nums lining-nums;font-size:11px}.stream-time{color:var(--text-muted)}.stream-type-pill{font-size:9px;font-weight:var(--fw-bold);padding:1px 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var(--border-subtle);border-radius:var(--radius-md);padding:var(--sp-4)}.seo-feature-card h3{font-size:var(--fs-md);font-weight:var(--fw-semibold);color:var(--text-primary);margin:0 0 var(--sp-2) 0}.seo-feature-card p{margin:0;font-size:var(--fs-sm);color:var(--text-secondary);line-height:1.5}.seo-tech-section p{font-size:var(--fs-sm);color:var(--text-secondary);line-height:1.6;margin:0 0 var(--sp-3) 0}.seo-tech-section p:last-child{margin-bottom:0}.seo-tech-section strong{color:var(--text-primary)}.faq-list{display:flex;flex-direction:column;gap:var(--sp-3)}.faq-item{border-bottom:1px solid var(--border-subtle);padding-bottom:var(--sp-3)}.faq-item:last-child{border-bottom:none;padding-bottom:0}.faq-question{font-size:var(--fs-base);font-weight:var(--fw-semibold);color:var(--text-primary);margin:0 0 var(--sp-1) 0}.faq-answer{font-size:var(--fs-sm);color:var(--text-secondary);margin:0;line-height:1.5}.app-footer{margin-top:auto;background:var(--bg-surface);border-top:1px solid var(--border-subtle);padding:var(--sp-4) var(--sp-6)}.app-footer__inner{max-width:1440px;margin:0 auto;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--sp-4);font-size:var(--fs-xs);color:var(--text-secondary)}.privacy-notice{display:flex;align-items:center;gap:var(--sp-2)}.privacy-notice__icon{font-size:1.1em}.footer-meta{color:var(--text-muted)}@media (max-width: 1199px){.main-workbench{grid-template-columns:1fr}.event-inspector{position:static}}@media (max-width: 768px){.app-header__inner,.toolbar-panel__inner,.main-workbench,.app-footer__inner{padding:var(--sp-3) var(--sp-4)}.nav-links{display:none}.toolbar-panel__inner{flex-direction:column;align-items:flex-start}.stats-cluster{width:100%;justify-content:space-between}}