:root{--bg:#0d1117;--panel:#161b22;--line:#30363d;--ink:#e6edf3;--muted:#8b949e;--link:#58a6ff;--green:#3fb950;--btn:#238636;--todo-bg:rgba(210,153,34,.18);--todo-ink:#e3b341;--hl:rgba(63,185,80,.15);color-scheme:dark}
@media (prefers-color-scheme:light){:root:not([data-theme=dark]){--bg:#fff;--panel:#f6f8fa;--line:#d0d7de;--ink:#1f2328;--muted:#59636e;--link:#0969da;--green:#1a7f37;--btn:#1f883d;--todo-bg:#fff8c5;--todo-ink:#7d4e00;--hl:#dafbe1;color-scheme:light}}
:root[data-theme=light]{--bg:#fff;--panel:#f6f8fa;--line:#d0d7de;--ink:#1f2328;--muted:#59636e;--link:#0969da;--green:#1a7f37;--btn:#1f883d;--todo-bg:#fff8c5;--todo-ink:#7d4e00;--hl:#dafbe1;color-scheme:light}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-snap-type:y proximity}
body{margin:0;background:var(--bg);color:var(--ink);font:18px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans",Helvetica,Arial,sans-serif;transition:background .3s,color .3s}
code,.term,.badge,.tag,.crumb{font-family:ui-monospace,SFMono-Regular,"JetBrains Mono",Menlo,Consolas,monospace}
h1,h2,h3{line-height:1.25;font-weight:600;margin:0 0 .6em}
h1{font-size:2.4rem}
h2{font-size:2rem;padding-bottom:.4rem;border-bottom:1px solid var(--line);margin-bottom:1rem}
h3{font-size:1.25rem;margin-top:1.5rem}
a{color:var(--link);text-decoration:none}a:hover{text-decoration:underline}
:focus-visible{outline:2px solid var(--link);outline-offset:2px;border-radius:4px}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:var(--panel);padding:.4em .8em;z-index:20}
#bar{position:fixed;top:0;left:0;height:3px;width:0;background:var(--green);z-index:20;transition:width .15s}
aside{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:1.2rem;padding:.6rem 1.5rem;background:var(--panel);border-bottom:1px solid var(--line)}
aside p{display:none}
.brand{color:var(--ink);font-weight:600;white-space:nowrap}
nav{flex:1;min-width:0}
nav ul{list-style:none;margin:0;padding:0;display:flex;gap:.2rem;overflow-x:auto}
nav li{max-width:none}
nav a{display:block;padding:.35rem .7rem;border-radius:6px;color:var(--muted);font-size:.95rem;white-space:nowrap;transition:background .2s,color .2s}
nav a:hover{background:var(--line);color:var(--ink);text-decoration:none}
nav a.act{background:var(--line);color:var(--ink)}
#theme{background:none;border:1px solid var(--line);color:var(--ink);border-radius:6px;padding:.25rem .6rem;cursor:pointer;font-size:1rem;transition:background .2s}
#theme:hover{background:var(--line)}
main{max-width:62rem;margin:0 auto;padding:0 2rem 4rem}
section{padding:2rem 0;border-bottom:1px solid var(--line)}
main p,main li{max-width:68ch}
.home main>section{min-height:calc(100vh - 56px);scroll-margin-top:56px;scroll-snap-align:start;padding:3.5rem 0;display:flex;flex-direction:column;justify-content:center}
.hero h1{font-size:3.4rem;margin:.3rem 0}
.lead{font-size:1.4rem;color:var(--muted)}
.term{color:var(--green);font-size:.95rem}.term span{color:var(--link)}
.term::after{content:"▌";margin-left:.2em;animation:blink 1.1s steps(2) infinite}
@keyframes blink{50%{opacity:0}}
.badge{display:inline-block;border:1px solid var(--line);border-radius:2em;padding:.1rem .75rem;font-size:.85rem;color:var(--link);background:var(--panel);margin:0 .4rem .4rem 0}
.btn{display:inline-block;background:var(--btn);color:#fff;padding:.55rem 1.2rem;border-radius:6px;font-weight:600;transition:filter .2s,transform .2s}
.btn:hover{filter:brightness(1.15);transform:translateY(-1px);text-decoration:none}
.todo{background:var(--todo-bg);color:var(--todo-ink);padding:0 .35em;border-radius:4px;border:1px dashed var(--todo-ink)}
code{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:.1rem .4rem;font-size:.85em}
.reals{list-style:none;padding:0}
.reals li{max-width:none;border:1px solid var(--line);background:var(--panel);border-radius:6px;padding:1rem 1.2rem;margin:0 0 .8rem;transition:border-color .2s,transform .2s}
.reals li:hover{border-color:var(--link);transform:translateX(4px)}
.tag{font-size:.8rem;border:1px solid var(--line);border-radius:2em;padding:.05rem .6rem;margin-left:.6rem;color:var(--green)}
.tw{overflow-x:auto;border:1px solid var(--line);border-radius:6px}
table{border-collapse:collapse;width:100%;min-width:680px}
th,td{border-bottom:1px solid var(--line);border-right:1px solid var(--line);padding:.6rem .7rem;text-align:center;font-size:.95rem}
th{background:var(--panel)}
th:first-child,td:first-child{text-align:left}
th:last-child,td:last-child{border-right:0}
tbody tr:last-child td{border-bottom:0}
tbody tr{transition:background .2s}tbody tr:hover{background:var(--panel)}
td.y{background:var(--hl);color:var(--green);font-weight:700}
th.gap{background:var(--todo-bg);color:var(--todo-ink)}
.crumb{margin:1.5rem 0;color:var(--muted);font-size:.95rem}
.comp{list-style:none;padding:0}
.comp li{padding:.4rem .7rem .4rem 2.2rem;position:relative;color:var(--muted);border-radius:6px;transition:background .2s}
.comp li::before{content:"○";position:absolute;left:.7rem}
.comp li.on{color:var(--ink);font-weight:600;background:var(--hl)}
.comp li.on::before{content:"●";color:var(--green)}
figure{margin:1rem 0;border:1px dashed var(--line);border-radius:6px;padding:.8rem;background:var(--panel)}
figcaption{font-size:.9rem;color:var(--muted)}
img{max-width:100%;height:auto;border-radius:6px}
@media (max-width:860px){body{font-size:16.5px}main{padding:0 1.1rem 3rem}.hero h1{font-size:2.3rem}.home main>section{min-height:auto}aside{flex-wrap:wrap;gap:.4rem 1rem}nav{order:3;flex-basis:100%}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}html{scroll-behavior:auto}}