:root{--color-canvas:#f8faf8;--color-surface:#fff;--color-surface-sage:#eef4f1;--color-surface-blue:#eef3f7;--color-ink:#183247;--color-text:#344a59;--color-muted:#6b7c86;--color-action:#245b73;--color-action-strong:#19485f;--color-action-soft:#e4eff2;--color-teal:#557f77;--color-gold:#ae8a50;--color-gold-soft:#eadfcf;--color-line:#dce4e1;--color-line-strong:#c8d6d2;--color-focus:#0a6f97;--font-heading:"Noto Serif CJK SC", "Noto Serif SC", "Songti SC", STSong, serif;--font-body:"Noto Sans CJK SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;--content-width:75rem;--reading-width:45rem;--compact-width:55rem;--gutter:clamp(1.25rem, 4vw, 4rem);--section-space:clamp(4.5rem, 8vw, 7rem);--group-space:clamp(1.5rem, 3vw, 2.5rem);--radius-control:.375rem;--radius-card:.625rem;--radius-media:.875rem;--header-height:4.75rem;--transition-fast:.14s ease;--transition-medium:.2s ease}
*{box-sizing:border-box}html{background:var(--color-canvas);color:var(--color-text);font-family:var(--font-body);scroll-behavior:smooth;text-rendering:optimizelegibility}body{background:var(--color-canvas);min-width:20rem;color:var(--color-text);margin:0;font-size:1rem;line-height:1.75}button,input,select,textarea{font:inherit}a{color:inherit;text-decoration:none}button,a{-webkit-tap-highlight-color:transparent}button{border:0}img,svg{display:block}::selection{background:var(--color-action-soft);color:var(--color-ink)}:focus-visible{outline:.1875rem solid color-mix(in srgb, var(--color-focus) 42%, transparent);outline-offset:.1875rem}h1,h2,h3,p{margin:0}h1,h2,h3{color:var(--color-ink);font-family:var(--font-heading);text-wrap:balance;font-weight:600}h1{font-size:clamp(2.25rem,4.2vw,3.5rem);line-height:1.15}h2{font-size:clamp(1.75rem,3vw,2.25rem);line-height:1.28}h3{font-size:clamp(1.25rem,2vw,1.4375rem);line-height:1.4}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}