:root{color-scheme:dark;--bg: #0e0e10;--bg-panel: #1a1a1f;--bg-elev: #24242b;--fg: #f5f5f7;--fg-dim: #9a9aa3;--accent: #3b82f6;--accent-hover: #60a5fa;--accent-fg: #ffffff;--accent-rgb: 59, 130, 246;--accent-warm: #ff8a3d;--accent-warm-rgb: 255, 138, 61;--success: #35c46f;--error: #ff5a5f;--border: #2e2e36;--radius: 10px;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px);--safe-left: env(safe-area-inset-left, 0px);--safe-right: env(safe-area-inset-right, 0px)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--fg);font-family:Inter,-apple-system,Hiragino Sans,Yu Gothic UI,system-ui,sans-serif;font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased;touch-action:manipulation;-webkit-touch-callout:none}.app{display:flex;flex-direction:column;min-height:100%;padding:calc(12px + var(--safe-top)) calc(12px + var(--safe-right)) calc(12px + var(--safe-bottom)) calc(12px + var(--safe-left));gap:16px;max-width:1280px;margin:0 auto}@media (min-width: 600px){.app{padding:calc(16px + var(--safe-top)) calc(16px + var(--safe-right)) calc(16px + var(--safe-bottom)) calc(16px + var(--safe-left))}}.app__header{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;flex-wrap:wrap}.app__title{margin:0;font-size:22px;font-weight:700}.app__subtitle{margin:4px 0 0;color:var(--fg-dim);font-size:13px}.app__main{display:grid;grid-template-columns:1fr;gap:16px;flex:1}@media (min-width: 900px){.app__main{grid-template-columns:1.4fr 1fr}}.app__preview-col,.app__side-col{display:flex;flex-direction:column;gap:16px;min-width:0}.panel{background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.panel__heading{margin:0 0 12px;font-size:14px;font-weight:600;letter-spacing:.02em;color:var(--fg-dim);text-transform:uppercase}.panel__desc{margin:-4px 0 12px;font-size:13px;color:var(--fg-dim)}.dropzone{border:2px dashed var(--border);border-radius:var(--radius);padding:36px 20px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:12px;background:var(--bg-panel);transition:border-color .12s ease;cursor:pointer}@media (min-width: 600px){.dropzone{padding:48px 24px}}.dropzone.active{border-color:var(--accent)}.dropzone__title{font-size:18px;margin:0}.dropzone__or{color:var(--fg-dim);margin:0}.dropzone__hint{color:var(--fg-dim);margin:8px 0 0;font-size:12px}.btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;border-radius:8px;padding:11px 16px;min-height:44px;font-size:14px;font-weight:600;cursor:pointer;background:var(--bg-elev);color:var(--fg);text-decoration:none;display:inline-flex;align-items:center;justify-content:center;transition:background .12s ease,transform 80ms ease;-webkit-tap-highlight-color:transparent}.btn:hover{background:#2f2f37}.btn:active{transform:scale(.98)}.btn--primary{background:var(--accent);color:var(--accent-fg)}.btn--primary:hover{background:var(--accent-hover)}.btn--success{background:var(--success);color:#0a0a0a}.btn--ghost{background:transparent;border:1px solid var(--border)}.aspect-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.aspect-tile{background:var(--bg-elev);border:1px solid var(--border);border-radius:8px;padding:10px;display:flex;flex-direction:column;align-items:center;gap:8px;cursor:pointer;color:var(--fg)}.aspect-tile--active{border-color:var(--accent);background:rgba(var(--accent-rgb),.1)}.aspect-tile__preview{display:block;width:100%;max-width:60px;background:#3a3a42;border-radius:4px}.aspect-tile__label{font-size:12px;color:var(--fg-dim);text-align:center}.actions{display:flex;flex-wrap:wrap;gap:10px}.preview{display:flex;flex-direction:column;gap:12px}.preview__stage{background:#000;border-radius:var(--radius);border:1px solid 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56px}}input[type=range]{height:28px;cursor:pointer}.slider__label{color:var(--fg-dim);font-size:13px}.slider__value{text-align:right;font-variant-numeric:tabular-nums;color:var(--fg-dim);font-size:12px}.lang-switch{display:flex;align-items:center;gap:8px}.lang-switch__label{color:var(--fg-dim);font-size:12px}.lang-switch__buttons{display:inline-flex;border:1px solid var(--border);border-radius:8px;overflow:hidden}.lang-switch__btn{background:transparent;border:none;color:var(--fg-dim);padding:6px 10px;font-size:12px;cursor:pointer}.lang-switch__btn--active{background:var(--bg-elev);color:var(--fg)}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:50;padding:24px}.overlay__card{background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius);padding:24px;min-width:280px;max-width:380px;text-align:center}.overlay__card h3{margin:0 0 12px;font-size:16px}.overlay__percent{margin:8px 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767px){.layout--desktop{display:none}.layout--mobile{display:block}}.preview__stage{position:relative}.preview__overlay{position:absolute;bottom:8px;left:8px;right:8px;display:flex;align-items:center;gap:6px;pointer-events:none}.preview__overlay-time{font-variant-numeric:tabular-nums;font-size:13px;font-weight:600;background:#000000a6;color:#fff;padding:3px 8px;border-radius:6px}.preview__overlay-kf{font-size:11px;background:#000000a6;color:var(--fg-dim);padding:3px 8px;border-radius:6px}.preview__overlay-kf--active{color:var(--accent)}.preview__overlay-scale{font-variant-numeric:tabular-nums;font-size:11px;background:#000000a6;color:var(--fg-dim);padding:3px 8px;border-radius:6px;margin-left:auto}.preview__gesture-hint{position:absolute;top:8px;left:50%;transform:translate(-50%);font-size:11px;background:#0000008c;color:#ffffffbf;padding:4px 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