:root{--ink:#243044;--muted:#5c687c;--line:#d7dce4;--paper:#f6f8fb;--panel:#fff;--link:#275ca8;--accent:#17735c;--accent-bg:#e8f4f0;--code-bg:#eef1f5}
@media(prefers-color-scheme:dark){:root{--ink:#e6eaf0;--muted:#a3adbd;--line:#3a4352;--paper:#161a21;--panel:#1f242d;--link:#8ab4f8;--accent:#5ccfa6;--accent-bg:#1e3a31;--code-bg:#2a303b}}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.65 system-ui,"Microsoft JhengHei","Noto Sans TC",sans-serif}
a{color:var(--link)}code{font-family:ui-monospace,Consolas,monospace;font-size:.92em;background:var(--code-bg);padding:.08em .35em;border-radius:4px}
pre{overflow:auto;padding:14px;background:var(--code-bg);border:1px solid var(--line);border-radius:8px}pre code{background:none;padding:0}
.sidebar{position:fixed;top:0;left:0;bottom:0;width:300px;overflow:auto;padding:24px 20px;background:var(--panel);border-right:1px solid var(--line)}
.sidebar h2{margin:18px 0 8px;font-size:.78rem;font-weight:800;letter-spacing:.08em;color:var(--muted);text-transform:uppercase}
.sidebar nav{display:grid;gap:4px}.sidebar nav a{display:block;padding:.4rem .6rem;border-radius:6px;text-decoration:none;font-size:.92rem;overflow-wrap:anywhere}
.sidebar nav a:hover{background:var(--accent-bg)}.sidebar nav a[aria-current=page]{background:var(--accent-bg);color:var(--accent);font-weight:700}
.content{margin-left:300px;padding:32px 40px 64px;max-width:1180px}article>h1{margin-top:0;font-size:clamp(1.8rem,4vw,2.6rem);line-height:1.2}
h2{margin-top:2.2rem;padding-bottom:.3rem;border-bottom:1px solid var(--line)}h3{margin-top:1.8rem}p,li{max-width:90ch;overflow-wrap:anywhere}
.table-wrap{overflow-x:auto;margin:16px 0;border:1px solid var(--line);border-radius:8px;background:var(--panel)}
table{width:100%;border-collapse:collapse;font-size:.9rem}th,td{padding:.55rem .7rem;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}th{background:var(--code-bg);white-space:nowrap}tr:last-child td{border-bottom:0}
figure{margin:24px 0;padding:12px;background:var(--panel);border:1px solid var(--line);border-radius:8px}figure img{display:block;width:100%;height:auto}
figure.diagram iframe{display:block;width:100%;height:min(78vh,760px);border:0;border-radius:4px;background:#fff}figcaption{margin-top:8px;color:var(--muted);font-size:.88rem}
blockquote{margin:16px 0;padding:8px 16px;border-left:4px solid var(--accent);background:var(--panel)}
.source{margin-top:48px;padding-top:16px;border-top:1px solid var(--line);color:var(--muted);font-size:.85rem}
.sidebar-toggle{display:none;position:fixed;top:12px;left:12px;z-index:3;padding:.5rem .9rem;font:inherit;font-weight:700;color:var(--ink);background:var(--panel);border:1px solid var(--line);border-radius:8px}
@media(max-width:900px){.sidebar{transform:translateX(-100%);transition:transform .2s;z-index:2;width:min(86vw,320px)}body.sidebar-open .sidebar{transform:none;box-shadow:0 0 0 100vw rgba(0,0,0,.35)}.sidebar-toggle{display:block}.content{margin-left:0;padding:64px 18px 48px}}