:root{color-scheme:light dark;--bg:#f7f8f5;--paper:#fff;--text:#20271f;--muted:#626b60;--line:#dce3d7;--accent:#365b28}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:2rem}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC",sans-serif;font-size:1rem;line-height:1.85;overflow-wrap:anywhere}
a{color:var(--accent);text-underline-offset:.2em}
a:hover{text-decoration-thickness:2px}
a:focus-visible{outline:3px solid var(--accent);outline-offset:5px;border-radius:2px}
.site-header,main,footer{width:min(100% - 2.5rem,54rem);margin-inline:auto}
.site-header{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding-block:1.5rem;border-bottom:1px solid var(--line)}
.brand{font-size:1.3rem;font-weight:750;letter-spacing:-.03em;color:var(--text);text-decoration:none;white-space:nowrap}
.brand span{color:var(--accent);margin-right:.25rem}
nav{display:flex;gap:1rem;flex-wrap:wrap;font-size:.9rem}
main{padding-bottom:2rem}
.intro{padding-block:4rem 2rem;border-bottom:1px solid var(--line)}
.eyebrow{color:var(--accent);font-size:.75rem;font-weight:750;letter-spacing:.16em}
h1{font-size:clamp(2rem,6vw,3.4rem);line-height:1.22;letter-spacing:-.045em;margin:1rem 0 1.5rem}
.lead{font-size:1.12rem;max-width:47rem}
.updated{font-size:.85rem;color:var(--muted)}
section{padding-block:1.5rem .25rem}
h2{font-size:1.3rem;line-height:1.5;letter-spacing:-.02em;margin:.75rem 0}
p{margin:.8rem 0}
ul,ol{padding-left:1.4rem}
li{padding-left:.15rem;margin:.65rem 0}
.support{margin-top:2rem;padding:1.5rem 1.75rem;background:var(--paper);border:1px solid var(--line);border-radius:1rem}
.support h2{font-size:1.65rem}
footer{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;border-top:1px solid var(--line);padding-block:1.5rem 2rem;font-size:.85rem;color:var(--muted)}
.skip-link{position:absolute;left:1rem;top:-5rem;padding:.5rem 1rem;background:var(--paper);z-index:2}
.skip-link:focus{top:1rem}
@media(prefers-color-scheme:dark){:root{--bg:#101410;--paper:#192018;--text:#edf2e9;--muted:#abb5a6;--line:#34402f;--accent:#b6e69c}}
@media(max-width:420px){.site-header{align-items:flex-start;flex-direction:column;gap:.4rem}.intro{padding-top:2.5rem}.support{padding:1rem}h1{font-size:2rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}