:root{--bg:#fff;--bg-alt:#f5f6f7;--surface:#fff;--ink:#17191c;--ink-soft:#33373d;--muted:#646a72;--line:#e6e8eb;--line-strong:#d3d6db;--accent:#e2602c;--accent-strong:#c14d1d;--accent-soft:#fdeee6;--accent-ink:#fff;--code-bg:#f5f6f7;--font-sans:"IBM Plex Sans Variable", "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;--font-mono:"IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, "PingFang SC", "Microsoft YaHei", monospace;--container:1200px;color-scheme:light}:root[data-theme=dark]{--bg:#111214;--bg-alt:#17191b;--surface:#17191b;--ink:#ecedee;--ink-soft:#c9ccd0;--muted:#959ba3;--line:#26292d;--line-strong:#353940;--accent:#ff7a3d;--accent-strong:#ff9663;--accent-soft:#33200f;--accent-ink:#160d07;--code-bg:#1b1d20;color-scheme:dark}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{background:var(--bg);color:var(--ink);font:400 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