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var(--danger);border-radius:var(--radius-xs);background:var(--surface-sunken);color:var(--danger);font-size:var(--fs-2xs);line-height:1.55}:root{--gb-blue-50: #eaf2ff;--gb-blue-100: #d1e3ff;--gb-blue-200: #a8c8ff;--gb-blue-300: #7aa8ff;--gb-blue-400: #4d8aff;--gb-blue-500: #0066ff;--gb-blue-600: #0052cc;--gb-blue-700: #0040b0;--gb-blue-800: #003088;--gb-blue-900: #002566;--gb-blue-950: #001a47;--gb-violet-300: #bf9bff;--gb-violet-400: #a371f7;--gb-violet-500: #8b5cf6;--gb-violet-600: #7c3aed;--gb-violet-700: #6d28d9;--gb-gold-500: #d4a574;--gb-warm-50: #f5f5f7;--gb-warm-100: #ebebef;--gb-warm-200: #d2d2d7;--gb-warm-300: #b8b8bf;--gb-warm-400: #86868b;--gb-warm-500: #6e6e73;--gb-warm-600: #424245;--gb-warm-700: #2c2c2e;--gb-warm-800: #1d1d1f;--gb-warm-900: #000000;--gb-font-sc: "Noto Sans SC", sans-serif;--gb-font-en: "Inter", sans-serif;--gb-font-mono: "JetBrains Mono", "Consolas", monospace}:root{--bg: var(--gb-warm-50);--bg-deep: var(--gb-warm-100);--surface: rgba(255, 255, 255, .72);--surface-strong: rgba(255, 255, 255, .85);--surface-sunken: rgba(0, 0, 0, .025);--surface-muted: rgba(0, 0, 0, .04);--ink: var(--gb-warm-800);--ink-soft: var(--gb-warm-600);--ink-mute: var(--gb-warm-400);--ink-faint: var(--gb-warm-300);--line: rgba(0, 0, 0, .08);--line-soft: rgba(0, 0, 0, .04);--accent: var(--gb-blue-500);--accent-deep: var(--gb-blue-700);--accent-glow: rgba(0, 102, 255, .12);--accent-soft: rgba(0, 102, 255, .1);--gold: var(--gb-gold-500);--radius-l: 28px;--radius-m: 20px;--radius-s: 14px;--radius-pill: 100px;--shadow-soft: 0 1px 3px rgba(0, 0, 0, .04), 0 8px 32px rgba(0, 0, 0, .04);--shadow-card: 0 1px 2px rgba(0, 0, 0, .04), 0 12px 40px rgba(0, 0, 0, .06), 0 24px 80px rgba(0, 0, 0, .04);--shadow-hover: 0 1px 2px rgba(0, 0, 0, .05), 0 20px 60px rgba(0, 0, 0, .1), 0 40px 120px rgba(0, 0, 0, .06);--fs-3xs: 13px;--fs-2xs: 12px;--fs-xs: 13px;--fs-sm: 15px;--fs-md: 17px;--fs-lg: 20px;--fs-xl: 28px;--fs-2xl: 40px;--fs-3xl: clamp(36px, 5vw, 64px);--fs-4xl: clamp(48px, 8vw, 110px);--ease: cubic-bezier(.22, 1, .36, 1);--ease-emphasis: cubic-bezier(.32, .72, 0, 1)}[data-theme=dark]{--bg: var(--gb-warm-900);--bg-deep: var(--gb-warm-900);--surface: rgba(28, 26, 38, .62);--surface-strong: rgba(34, 32, 46, .85);--surface-sunken: rgba(255, 255, 255, .04);--surface-muted: rgba(255, 255, 255, .06);--ink: #fff;--ink-soft: #d4d4dc;--ink-mute: #9a9aa3;--ink-faint: #5a5760;--line: rgba(255, 255, 255, .08);--line-soft: rgba(255, 255, 255, .04);--accent: var(--gb-blue-400);--accent-deep: var(--gb-blue-600);--accent-glow: rgba(77, 138, 255, .18);--accent-soft: rgba(77, 138, 255, .1);--shadow-soft: 0 1px 3px rgba(0, 0, 0, .5), 0 8px 32px rgba(0, 0, 0, .4);--shadow-card: 0 1px 2px rgba(0, 0, 0, .5), 0 12px 40px rgba(0, 0, 0, .5), 0 24px 80px rgba(0, 0, 0, .4);--shadow-hover: 0 1px 2px rgba(0, 0, 0, .55), 0 20px 60px rgba(0, 0, 0, .6), 0 40px 120px rgba(0, 0, 0, .5)}:root{--radius-xs: 10px;--canvas-bg: #e6e8ec;--canvas-check-a: #dcdee3;--canvas-check-b: #eef0f3;--facing-face: rgba(0, 102, 255, .55);--facing-cap: rgba(0, 102, 255, .32);--on-accent: #ffffff;--handle-rotate: var(--gb-blue-500);--handle-scale: #16a34a;--mark: #ff2bd0;--mark-soft: rgba(255, 43, 208, .12);--mark-ink: #ff9be9;--danger: #ff8a80;--scrim: rgba(255, 255, 255, .78);--scrim-strong: rgba(246, 247, 249, .9)}[data-theme=dark]{--canvas-bg: #0a0c10;--canvas-check-a: #15181f;--canvas-check-b: #0e1015;--facing-face: rgba(77, 138, 255, .78);--facing-cap: rgba(77, 138, 255, .5);--scrim: rgba(0, 0, 0, .65);--scrim-strong: rgba(10, 12, 18, .86)}:root{color-scheme:dark;font-family:var(--gb-font-en),var(--gb-font-sc),system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}body{margin:0}*{scrollbar-width:thin;scrollbar-color:var(--ink-faint) transparent}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track,::-webkit-scrollbar-corner{background:transparent}::-webkit-scrollbar-thumb{background:var(--ink-faint);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--ink-mute)}button,input,textarea,select{font:inherit}button:focus-visible,input:focus-visible,.file-btn:focus-within{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-glow)}button{cursor:pointer;border:1px solid var(--line);background:var(--surface-muted);color:var(--ink-soft);border-radius:var(--radius-xs);padding:8px 12px;transition:background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease)}button:hover{background:var(--surface-strong);color:var(--ink)}button:disabled{opacity:.4;cursor:not-allowed}button:disabled:hover{background:var(--surface-muted);color:var(--ink-soft)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 14px;border:1px solid var(--line);border-radius:var(--radius-s);background:var(--surface-muted);color:var(--ink-soft);font-size:var(--fs-xs);line-height:1.2;cursor:pointer;transition:background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease)}.btn-block{display:flex;width:100%}.btn-accent{background:var(--accent);border-color:var(--accent);color:var(--on-accent);font-weight:600}.btn-accent:hover:not(:disabled){background:var(--accent-deep);border-color:var(--accent-deep);color:var(--on-accent)}.btn-accent:disabled:hover{background:var(--accent);color:var(--on-accent)}.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--ink-soft);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.btn-ghost:hover:not(:disabled){background:var(--surface-strong);border-color:var(--accent);color:var(--ink)}.seg{padding:4px 9px;border-radius:6px;border:1px solid var(--line);background:var(--surface-sunken);color:var(--ink-mute);font-size:var(--fs-2xs);line-height:1.4}.seg:hover:not(:disabled){background:var(--surface-muted);color:var(--ink)}.seg.on{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}.seg.on:hover:not(:disabled){background:var(--accent-soft);color:var(--accent)}.licon{flex:none;padding:3px 7px;border-radius:6px;background:var(--surface-sunken);border:1px solid var(--line);color:var(--ink-soft);font-size:var(--fs-2xs)}h2{margin:0 0 10px;font-size:var(--fs-xs);font-weight:600;color:var(--ink-soft);letter-spacing:-.01em}section{margin-bottom:24px}.hint{margin:8px 0;color:var(--ink-mute);font-size:var(--fs-2xs);line-height:1.55}.file-btn{position:relative;cursor:pointer;text-align:center}.file-btn input{display:none}