:root{--bg: #f5f0e8;--bg-alt: #ffffff;--ink: #1a1a1a;--ink-light: #6b6560;--cream: #f5f0e8;--card-bg: #ffffff;--card-border: rgba(26,26,26,.08);--nav-bg: rgba(245,240,232,.85);--nav-border: rgba(26,26,26,.06);--orange: #e8572a;--orange-light: #ff7a52;--teal: #1a8a7d;--teal-light: #2bc4b0;--lemon: #e8d44a;--blue: #3d5afe;--shadow-color: rgba(26,26,26,.08);--shadow-strong: rgba(26,26,26,.14);--pill-bg: rgba(26,26,26,.05);--pill-border: rgba(26,26,26,.08);--kbd-bg: rgba(26,26,26,.05);--kbd-border: rgba(26,26,26,.12);--logo-border: rgba(26,26,26,.08);--canvas-bg: #1c1c1c;--canvas-line: rgba(255,255,255,.08);--canvas-ink: #e8e8e8;--canvas-ink-dim: #8a8a8a;--canvas-ink-faint: #555;--canvas-panel: rgba(20,20,20,.88);--font-display: "Instrument Serif", Georgia, serif;--font-body: "Outfit", system-ui, sans-serif;--font-mono: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace}[data-theme=dark]{--bg: #121214;--bg-alt: #1a1a1e;--ink: #e8e4dc;--ink-light: #9a958f;--cream: #e8e4dc;--card-bg: #1e1e22;--card-border: rgba(255,255,255,.07);--nav-bg: rgba(18,18,20,.88);--nav-border: rgba(255,255,255,.06);--shadow-color: rgba(0,0,0,.35);--shadow-strong: rgba(0,0,0,.5);--pill-bg: rgba(255,255,255,.06);--pill-border: rgba(255,255,255,.08);--kbd-bg: rgba(255,255,255,.06);--kbd-border: rgba(255,255,255,.12);--logo-border: rgba(255,255,255,.1)}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}::selection{background:var(--orange);color:#fff}html{scroll-behavior:smooth}body{font-family:var(--font-body);background:var(--bg);color:var(--ink);overflow-x:hidden;min-height:100vh;font-size:16px;font-weight:400;transition:background .4s,color .4s}a{color:inherit}nav{position:sticky;top:0;z-index:99;padding:1rem 2.5rem;display:flex;align-items:center;justify-content:space-between;background:var(--nav-bg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1.5px solid var(--nav-border);transition:background .4s,border-color .4s}.nav-logo{display:inline-flex;align-items:center;gap:.65rem;text-decoration:none;color:var(--ink);-webkit-user-select:none;user-select:none;transition:transform .2s}.nav-logo:active{transform:scale(.96)}.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;border:1.5px solid var(--logo-border);background:var(--card-bg);color:var(--orange);transition:transform .3s cubic-bezier(.34,1.56,.64,1),border-color .3s}.logo-mark svg{width:19px;height:19px}.nav-logo:hover .logo-mark{transform:rotate(-6deg) scale(1.05);border-color:var(--orange)}.nav-name{font-family:var(--font-display);font-style:italic;font-size:1.45rem;letter-spacing:-.5px}.nav-right{display:flex;align-items:center;gap:1rem}.nav-back{display:inline-flex;align-items:center;gap:.45rem;font-size:.82rem;font-weight:500;color:var(--ink-light);text-decoration:none;padding:.5rem .9rem;border-radius:100px;transition:color .2s,background .2s}.nav-back:hover{color:var(--ink);background:var(--pill-bg)}.nav-back svg{transition:transform .2s}.nav-back:hover svg{transform:translate(-3px)}.theme-toggle{background:none;border:1.5px solid var(--card-border);width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--ink);transition:all .3s cubic-bezier(.34,1.56,.64,1);flex-shrink:0}.theme-toggle:hover{border-color:var(--orange);color:var(--orange);transform:scale(1.08)}.theme-toggle svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .4s cubic-bezier(.34,1.56,.64,1)}.theme-toggle:hover svg{transform:rotate(30deg)}.theme-toggle .icon-moon,[data-theme=dark] .theme-toggle .icon-sun{display:none}[data-theme=dark] .theme-toggle .icon-moon{display:block}main{padding-bottom:4rem}.hero{text-align:center;padding:3.5rem 2rem 2.5rem;max-width:760px;margin:0 auto}.hero-eyebrow{display:inline-flex;align-items:center;gap:.7rem;font-size:.7rem;font-weight:700;letter-spacing:2.5px;text-transform:uppercase;color:var(--orange);margin-bottom:1.25rem}.eyebrow-line{display:block;width:28px;height:1.5px;background:currentColor;opacity:.45}.hero h1{font-family:var(--font-display);font-weight:400;font-size:clamp(2.6rem,6vw,4.5rem);line-height:1;letter-spacing:-1.5px;margin-bottom:1.4rem}.hero h1 em{font-style:italic;color:var(--orange)}.hero-sub{max-width:560px;margin:0 auto;color:var(--ink-light);font-size:1.05rem;line-height:1.65}.stage{max-width:1280px;margin:0 auto 3rem;padding:0 2rem}#video-container{position:relative;width:100%;aspect-ratio:16 / 9;background:var(--canvas-bg);border:1.5px solid var(--card-border);border-radius:22px;overflow:hidden;box-shadow:0 24px 70px var(--shadow-color);transition:box-shadow .35s,border-color .35s,transform .35s}#video-container:hover{box-shadow:0 30px 90px var(--shadow-strong)}#webcam,#draw-canvas,#overlay-canvas{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;transform:scaleX(-1)}#draw-canvas{z-index:1}#overlay-canvas{z-index:2;pointer-events:none}#status-row{position:absolute;top:14px;left:16px;z-index:3;display:flex;flex-direction:column;gap:5px;align-items:flex-start}#gesture-label{display:inline-flex;align-items:center;font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--canvas-ink);background:var(--canvas-panel);border:1px solid var(--canvas-line);padding:5px 10px;border-radius:6px}.status-meta{display:flex;gap:6px;font-family:var(--font-mono);font-size:10px;color:var(--canvas-ink-faint)}#raw-label,#fps-label{background:var(--canvas-panel);padding:3px 7px;border-radius:5px;font-variant-numeric:tabular-nums}#raw-label:empty{display:none}#right-stack{position:absolute;top:14px;right:16px;z-index:3;display:flex;flex-direction:column;align-items:flex-end;gap:6px}#bg-toggle{display:inline-flex;align-items:center;gap:5px;padding:5px 10px 5px 8px;font-family:var(--font-mono);font-size:11px;font-weight:500;color:var(--canvas-ink);background:var(--canvas-panel);border:1px solid var(--canvas-line);border-radius:8px;cursor:pointer;transition:background .15s,color .15s,border-color .15s}#bg-toggle:hover{background:#ffffff14;color:var(--orange-light);border-color:var(--orange-light)}#bg-toggle svg{width:13px;height:13px}#bg-toggle .icon-cam,#video-container.bg-webcam #bg-toggle .icon-blank{display:none}#video-container.bg-webcam #bg-toggle .icon-cam{display:block}#video-container:not(.bg-webcam) #webcam{opacity:0}#brush-control{display:flex;align-items:stretch;font-family:var(--font-mono);font-size:11px;background:var(--canvas-panel);border:1px solid var(--canvas-line);border-radius:8px;overflow:hidden}#brush-control button{width:26px;height:26px;background:transparent;border:none;color:var(--canvas-ink);cursor:pointer;font-size:14px;line-height:1;padding:0;transition:background .15s,color .15s}#brush-control button:hover{background:#ffffff14;color:var(--orange-light)}#brush-size{min-width:46px;display:flex;align-items:center;justify-content:center;color:var(--canvas-ink-dim);font-variant-numeric:tabular-nums;border-left:1px solid var(--canvas-line);border-right:1px solid var(--canvas-line)}#color-palette{position:absolute;bottom:14px;right:16px;z-index:3;display:flex;gap:5px;background:var(--canvas-panel);padding:5px;border:1px solid var(--canvas-line);border-radius:10px}.swatch{width:20px;height:20px;border:1.5px solid rgba(0,0,0,.4);background-clip:padding-box;cursor:pointer;padding:0;outline:none;transition:transform .15s,outline-offset .15s;border-radius:4px}.swatch:hover{transform:scale(1.12);outline:1px solid rgba(255,255,255,.5);outline-offset:2px}.swatch.active{outline:2px solid #fff;outline-offset:2px;transform:scale(1.08)}#actions{position:absolute;bottom:14px;left:16px;z-index:3;display:flex;gap:1px;font-family:var(--font-body);font-size:12px;font-weight:500;background:var(--canvas-line);border:1px solid var(--canvas-line);border-radius:8px;overflow:hidden}#actions button{background:var(--canvas-panel);border:none;color:var(--canvas-ink);padding:7px 13px;cursor:pointer;font-family:inherit;font-size:inherit;font-weight:inherit;letter-spacing:.02em;transition:background .15s,color .15s}#actions button:hover{background:#ffffff1a;color:var(--orange-light)}#actions button:first-child{border-top-left-radius:7px;border-bottom-left-radius:7px}#actions button:last-child{border-top-right-radius:7px;border-bottom-right-radius:7px}.guide{max-width:1100px;margin:0 auto;padding:4rem 2rem 2rem}.guide-header{text-align:center;max-width:540px;margin:0 auto 2.5rem}.label-tag{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--orange);background:#e8572a14;padding:.35rem .9rem;border-radius:100px;margin-bottom:1rem}[data-theme=dark] .label-tag{background:#e8572a24}.sec-title{font-family:var(--font-display);font-weight:400;font-size:clamp(1.8rem,3.5vw,2.5rem);line-height:1.1;letter-spacing:-.5px}.guide-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1rem;margin-bottom:2rem}.guide-card{position:relative;display:flex;flex-direction:column;gap:.35rem;padding:1.4rem 1.1rem;border-radius:16px;border:1.5px solid var(--card-border);background:var(--card-bg);text-align:left;transition:transform .35s cubic-bezier(.34,1.56,.64,1),box-shadow .35s,border-color .35s}.guide-card:hover{transform:translateY(-4px);box-shadow:0 16px 40px var(--shadow-color);border-color:transparent}.guide-card:before{content:"";position:absolute;left:0;right:0;top:0;height:3px;border-top-left-radius:16px;border-top-right-radius:16px}.guide-card-orange:before{background:var(--orange)}.guide-card-teal:before{background:var(--teal)}.guide-card-ink:before{background:var(--ink)}.guide-card-blue:before{background:var(--blue)}.guide-card-lemon:before{background:var(--lemon)}.guide-emoji{font-size:1.7rem;line-height:1;margin-bottom:.35rem;filter:grayscale(0)}.guide-name{font-weight:600;font-size:.92rem;color:var(--ink);letter-spacing:-.005em}.guide-action{font-family:var(--font-mono);font-size:.72rem;color:var(--ink-light);letter-spacing:.04em;text-transform:uppercase}.guide-keyboard{text-align:center;font-size:.82rem;color:var(--ink-light);font-weight:400;line-height:2}.guide-keyboard kbd{display:inline-block;padding:2px 7px;font-family:var(--font-mono);font-size:.72rem;background:var(--kbd-bg);border:1px solid var(--kbd-border);border-radius:4px;color:var(--ink);margin:0 1px}footer{border-top:1px solid var(--card-border);padding:2rem 2.5rem;margin-top:2rem;transition:border-color .4s}.footer-inner{max-width:1280px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1rem;font-size:.85rem;color:var(--ink-light)}.footer-inner a{color:var(--ink);text-decoration:none;border-bottom:1px dotted var(--ink-light);transition:color .2s,border-color .2s}.footer-inner a:hover{color:var(--orange);border-bottom-color:var(--orange)}.footer-links{display:flex;gap:1.5rem}@media(max-width:840px){nav{padding:.9rem 1.4rem}.nav-back{display:none}.hero{padding:2.5rem 1.4rem 1.8rem}.stage{padding:0 1rem;margin-bottom:2rem}#video-container{border-radius:16px}.guide{padding:3rem 1.4rem 1.5rem}.guide-grid{grid-template-columns:repeat(2,1fr)}footer{padding:1.5rem 1.4rem}}@media(max-width:520px){.nav-name{font-size:1.25rem}.hero h1{letter-spacing:-1px}#status-row{top:10px;left:10px}#gesture-label{font-size:10px;padding:4px 8px}#brush-control{top:10px;right:10px}#color-palette{bottom:10px;right:10px}#actions{bottom:10px;left:10px;font-size:11px}#actions button{padding:6px 10px}.swatch{width:18px;height:18px}}