:root{color-scheme:light dark;--color-background: #f2f4ee;--color-surface: #fbfcf8;--color-surface-raised: #ffffff;--color-surface-glass: rgb(251 252 248 / 72%);--color-text: #182018;--color-text-secondary: #626d63;--color-accent: #365b42;--color-accent-soft: #dfe9dc;--color-divider: rgb(24 32 24 / 12%);--color-divider-strong: rgb(24 32 24 / 22%);--color-focus: #2563eb;--font-sans: "Zen Kaku Gothic New", system-ui, -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;--font-display: "Zen Kaku Gothic New", system-ui, -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;--radius-small: .75rem;--radius-medium: 1.125rem;--radius-large: 1.75rem;--radius-pill: 999px;--shadow-low: 0 .25rem 1rem rgb(32 48 34 / 7%);--shadow-medium: 0 .75rem 2rem rgb(32 48 34 / 10%);--shadow-floating: 0 1.25rem 3rem rgb(32 48 34 / 14%);--material-blur: 1.25rem;--motion-press: .1s ease-out;--motion-continuity: .36s cubic-bezier(.22, .8, .26, 1);--page-gutter: clamp(.875rem, 2vw, 1.5rem);--content-width: 74rem;--reading-width: 48rem;--color-paper: var(--color-background);--color-ink: var(--color-text);--color-charcoal: var(--color-text-secondary);--color-muted: var(--color-text-secondary);--color-rule: var(--color-divider-strong);--color-rule-soft: var(--color-divider);--color-park: var(--color-accent-soft);--color-stone: #e4e1d7;--font-serif: var(--font-display)}*{box-sizing:border-box}html{min-height:100%;background:var(--color-background);color:var(--color-text);font-family:var(--font-sans);scrollbar-gutter:stable;text-size-adjust:100%}html[lang=zh-Hans]{--font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;--font-display: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif}body{min-height:100vh;margin:0;background:radial-gradient(circle at 9% 5%,rgb(194 213 188 / 44%),transparent 30rem),radial-gradient(circle at 92% 12%,rgb(235 218 177 / 42%),transparent 28rem),var(--color-background);color:var(--color-text);font-family:var(--font-sans);font-size:16px;line-height:1.8}a{color:inherit;text-decoration-thickness:.06em;text-underline-offset:.18em}img,svg{display:block;max-width:100%}button,a{-webkit-tap-highlight-color:transparent;touch-action:manipulation}button,input,select,textarea{font:inherit}:focus-visible{outline:2px solid var(--color-focus);outline-offset:3px}.shell{width:min(100%,var(--content-width));margin:0 auto;padding-inline:var(--page-gutter)}.page-grid{display:grid;grid-template-columns:1fr}.metadata{font-family:var(--font-sans);font-size:.7rem;font-weight:700;letter-spacing:.08em;line-height:1.45;text-transform:uppercase;color:var(--color-text-secondary)}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(min-width:860px){.page-grid{grid-template-columns:minmax(0,1fr) 320px;column-gap:clamp(1rem,2vw,1.5rem)}}@media(prefers-color-scheme:dark){:root{--color-background: #111712;--color-surface: #18201a;--color-surface-raised: #202923;--color-surface-glass: rgb(25 34 28 / 78%);--color-text: #f2f5ee;--color-text-secondary: #b3bdb3;--color-accent: #9ec4a3;--color-accent-soft: #263b2b;--color-divider: rgb(239 245 237 / 12%);--color-divider-strong: rgb(239 245 237 / 22%);--color-focus: #8bb8ff;--color-stone: #283029;--shadow-low: 0 .25rem 1rem rgb(0 0 0 / 16%);--shadow-medium: 0 .75rem 2rem rgb(0 0 0 / 22%);--shadow-floating: 0 1.25rem 3rem rgb(0 0 0 / 30%)}body{background:radial-gradient(circle at 9% 5%,rgb(74 104 77 / 30%),transparent 30rem),radial-gradient(circle at 92% 12%,rgb(115 93 57 / 22%),transparent 28rem),var(--color-background)}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:1ms!important;animation-iteration-count:1!important;transition-duration:1ms!important}.site-nav a:active,.language-switch a:active,.mobile-menu summary:active,.mobile-menu-panel a:active,.photo-controls button:active,.chip:active,.article-link:active,.topic-chip:active,.related-link:active,.event-card:active{transform:none!important;transition-duration:.16s!important;transition-property:color,background-color,border-color,opacity!important}}@supports not (backdrop-filter: blur(1px)){:root{--color-surface-glass: var(--color-surface)}}@media(prefers-reduced-transparency:reduce){:root{--color-surface-glass: var(--color-surface);--material-blur: 0rem}.glass-surface,.site-header,.mobile-menu-panel{backdrop-filter:none!important}}@media(prefers-contrast:more){:root{--color-surface-glass: var(--color-surface);--color-divider: currentColor;--color-divider-strong: currentColor}}