:root{--canvas: #ffffff;--s1: #fafafa;--s2: #f5f5f5;--s3: #f0f0f0;--s4: #ebebeb;--hair: rgba(0, 0, 0, .08);--hair-strong: rgba(0, 0, 0, .14);--hair-3: rgba(0, 0, 0, .2);--ink: #0a0a0a;--ink-muted: rgba(10, 10, 10, .78);--ink-subtle: rgba(10, 10, 10, .62);--ink-3: rgba(10, 10, 10, .6);--blue: #1a66e0;--blue-lit: #4d8dff;--blue-soft: rgba(31, 111, 235, .08);--blue-glow: rgba(31, 111, 235, .18);--inv: #0a0a0a;--inv-ink: #ffffff;--sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;--mono: ui-monospace, "SF Mono", Menlo, Consolas, "PingFang SC", monospace;--serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", Georgia, "Times New Roman", serif;--max-w: 1200px;--gutter: 24px;--r-xs: 4px;--r-sm: 6px;--r-md: 8px;--r-lg: 12px;--r-xl: 16px;--ease: cubic-bezier(.16, 1, .3, 1);--glow-1: rgba(26, 102, 224, .05);--glow-2: rgba(26, 102, 224, .03);--shadow: 0 1px 2px rgba(10, 10, 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