@layer theme{:root,:host{--font-sans:Arial, Helvetica, "PingFang SC", "Microsoft YaHei", sans-serif;--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono);--color-ink:#142b3d;--color-body:#303b43;--color-muted:#56646e;--color-accent:#176b70;--color-paper:#f7f8f6;--color-surface:#eef2ef;--color-line:#dce2e4;--font-editorial:Georgia, "Times New Roman", "Songti SC", SimSun, serif;--spacing-section:6rem}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color 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