:root{
  --bg:#faf6ef; --surface:#ffffff; --surface-2:#f3ece0; --ink:#1d1916; --muted:#6f655b;
  --line:#e6dccd; --accent:#c9830f; --accent-ink:#1d1916; --accent-soft:#fbecc9; --ok:#2f7d4f;
  --shadow:0 1px 2px rgba(40,25,5,.06),0 6px 24px -12px rgba(40,25,5,.18);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#14110f; --surface:#1d1916; --surface-2:#26211d; --ink:#f4ede3; --muted:#a89c8e;
    --line:#342d27; --accent:#f2b134; --accent-ink:#14110f; --accent-soft:#3a2c13; --ok:#6fcf97;
    --shadow:0 1px 2px rgba(0,0,0,.3),0 10px 30px -14px rgba(0,0,0,.6);
  }
}
:root[data-theme="dark"]{
  --bg:#14110f; --surface:#1d1916; --surface-2:#26211d; --ink:#f4ede3; --muted:#a89c8e;
  --line:#342d27; --accent:#f2b134; --accent-ink:#14110f; --accent-soft:#3a2c13; --ok:#6fcf97;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 10px 30px -14px rgba(0,0,0,.6);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:128px}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:"Bricolage Grotesque",system-ui,sans-serif;line-height:1.1;margin:0}
a{color:inherit}
.mono{font-family:"JetBrains Mono",ui-monospace,monospace}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}

/* header */
.top{border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:14px;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-family:"Bricolage Grotesque",sans-serif;font-weight:800;font-size:19px;white-space:nowrap}
.brand b{display:grid;place-items:center;width:30px;height:30px;border-radius:8px;background:var(--accent);color:var(--accent-ink);font-family:"JetBrains Mono",monospace;font-size:15px}
.search{display:block;position:relative;margin-bottom:10px}
.search input{width:100%;height:46px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink);padding:0 16px 0 40px;font:inherit;font-size:15px;outline:none}
.search input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.search svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--muted)}
.switch{display:inline-flex;padding:3px;border-radius:999px;border:1px solid var(--line);background:var(--surface)}
.switch button{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 14px;border:0;border-radius:999px;background:transparent;color:var(--muted);font:inherit;font-size:14px;font-weight:600;cursor:pointer}
.switch button[aria-pressed="true"]{background:var(--accent);color:var(--accent-ink)}

/* hero */
.hero{padding-top:56px;padding-bottom:28px}
.eyebrow{display:inline-flex;gap:8px;align-items:center;font-size:13px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.eyebrow i{width:8px;height:8px;border-radius:50%;background:var(--accent)}
.hero h1{font-size:clamp(36px,7vw,72px);font-weight:800;letter-spacing:-.02em;margin:14px 0 16px;max-width:14ch}
.hero h1 span{color:var(--accent)}
.hero p{font-size:clamp(16px,2.2vw,19px);color:var(--muted);max-width:60ch;margin:0}
.stats{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:10px 16px;box-shadow:var(--shadow)}
.stat strong{font-family:"JetBrains Mono",monospace;font-size:20px;display:block}
.stat small{color:var(--muted);font-size:13px}

/* how-to strip */
.how{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:8px;margin-bottom:28px}
.how div{background:var(--surface-2);border-radius:14px;padding:16px}
.how b{font-family:"JetBrains Mono",monospace;color:var(--accent);font-size:13px}
.how p{margin:6px 0 0;font-size:14.5px}
.how code{font-family:"JetBrains Mono",monospace;font-size:13px;background:var(--surface);padding:1px 6px;border-radius:6px;border:1px solid var(--line);word-break:break-all}

/* chips */
.chips{position:sticky;top:0;z-index:10;background:var(--bg);padding:12px 0;border-bottom:1px solid var(--line);margin-bottom:8px}
.chips .row{position:relative;display:flex;gap:8px;overflow-x:auto;scrollbar-width:none}
.chips .row::-webkit-scrollbar{display:none}
.chip{flex:none;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:999px;padding:7px 14px;font-size:14px;text-decoration:none;white-space:nowrap}
.chip:hover{border-color:var(--accent)}
.chip.active{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}

/* categories */
.cat{padding:30px 0 10px;content-visibility:auto;contain-intrinsic-size:auto 600px}
.cat-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.cat-head h2{font-size:clamp(22px,3.4vw,30px);font-weight:800}
.cat-head .n{color:var(--muted);font-size:14px;font-weight:500;margin-left:8px;font-family:system-ui,sans-serif}
.all-link{font-size:14px;color:var(--muted);text-decoration:none;border-bottom:1px dashed var(--muted)}
.all-link:hover{color:var(--accent);border-color:var(--accent)}
.grid{margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:10px}
.card{list-style:none;display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:12px 12px 12px 16px;transition:border-color .12s ease}
.card:hover{border-color:var(--accent)}
.card .t{flex:1;min-width:0}
.card .name{font-weight:600;font-size:15px;line-height:1.3}
.card .code{font-family:"JetBrains Mono",monospace;font-size:13px;color:var(--muted);margin-top:2px}
.card mark{background:var(--accent-soft);color:inherit;border-radius:3px}
.act{flex:none;width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:var(--surface-2);color:var(--ink);cursor:pointer;display:grid;place-items:center;text-decoration:none}
.act:hover{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.act.done{background:var(--ok);border-color:var(--ok);color:#fff}
.empty{display:none;text-align:center;padding:60px 16px;color:var(--muted)}
.empty strong{display:block;font-size:20px;color:var(--ink);margin-bottom:6px;font-family:"Bricolage Grotesque",sans-serif}

/* faq */
.faq{padding-top:56px;padding-bottom:24px}
.faq h2{font-size:clamp(26px,4vw,38px);font-weight:800;margin-bottom:18px}
details{background:var(--surface);border:1px solid var(--line);border-radius:14px;margin-bottom:10px;padding:0 18px}
summary{cursor:pointer;list-style:none;padding:16px 0;font-weight:600;font-size:16.5px;display:flex;justify-content:space-between;gap:12px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font-family:"JetBrains Mono",monospace;color:var(--accent);font-size:20px;line-height:1}
details[open] summary::after{content:"–"}
details p{margin:0 0 16px;color:var(--muted)}

footer{border-top:1px solid var(--line);margin-top:40px;padding:26px 0 40px;color:var(--muted);font-size:13.5px}
footer p{margin:4px 0}

.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);background:var(--ink);color:var(--bg);padding:10px 18px;border-radius:999px;font-size:14px;opacity:0;transition:.2s;pointer-events:none;z-index:50}
.toast.show{opacity:1;transform:translate(-50%,0)}

@media (max-width:720px){
  .how{grid-template-columns:1fr}
  .brand span{display:none}
  .hero{padding-top:36px;padding-bottom:20px}
  .switch span{display:none}
  .switch button{padding:0 10px}
}

[hidden]{display:none!important}
.brand{color:var(--ink)}
.top nav{display:flex;align-items:center;gap:16px}
.top nav a.nav{font-size:14px;font-weight:600;color:var(--muted);text-decoration:none}
.top nav a.nav:hover{color:var(--ink)}
.updated{color:var(--muted);font-size:13.5px;margin-top:14px}
.updated time{font-weight:600;color:var(--ink)}

/* breadcrumbs */
.crumbs{padding-top:22px;font-size:13.5px;color:var(--muted)}
.crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.crumbs li+li::before{content:"/";margin-right:6px;opacity:.6}
.crumbs a{text-decoration:none}
.crumbs a:hover{color:var(--accent)}

/* quick answer */
.answer{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:14px;padding:18px 20px;margin-top:26px;max-width:760px}
.answer h2{font-size:15px;font-family:"JetBrains Mono",monospace;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:.06em;margin-bottom:8px}
.answer p{margin:0;color:var(--ink);font-size:16.5px}
.answer code,.prose code{font-family:"JetBrains Mono",monospace;font-size:.9em;background:var(--surface-2);padding:1px 6px;border-radius:6px}

/* main codes table */
.main-codes{padding-top:8px;padding-bottom:28px}
.main-codes h2,.section-title{font-size:clamp(24px,3.6vw,34px);font-weight:800;margin-bottom:6px}
.main-codes > p{color:var(--muted);margin:0 0 16px}
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:var(--surface)}
table.codes{width:100%;border-collapse:collapse;font-size:15px}
table.codes th,table.codes td{text-align:left;padding:11px 16px;border-bottom:1px solid var(--line);white-space:nowrap}
table.codes tr:last-child td{border-bottom:0}
table.codes th{font-size:12.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);background:var(--surface-2)}
table.codes td.c{font-family:"JetBrains Mono",monospace;font-weight:700}
table.codes a{text-decoration:none}
table.codes a:hover{color:var(--accent)}
table.codes td.l a{color:var(--muted);font-size:14px}
.cols{columns:2 320px;column-gap:0}
.cols table{break-inside:avoid}

/* category head link */
.cat-head h2 a{text-decoration:none}
.cat-head h2 a:hover{color:var(--accent)}
.cat-links{display:flex;gap:14px;flex-wrap:wrap;align-items:baseline}

/* prose */
.prose{max-width:760px}
.prose h2{font-size:clamp(22px,3vw,28px);font-weight:800;margin:34px 0 10px}
.prose p,.prose li{color:var(--muted)}
.prose strong{color:var(--ink)}
.prose ol,.prose ul{padding-left:20px}

/* related */
.related{padding-top:40px}
.related ul{list-style:none;margin:14px 0 0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:10px}
.related a{display:flex;justify-content:space-between;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 14px;text-decoration:none;font-weight:600;font-size:15px}
.related a:hover{border-color:var(--accent)}
.related a span{font-family:"JetBrains Mono",monospace;color:var(--muted);font-weight:500;font-size:13px}

/* footer nav */
.foot-nav{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:6px 18px;margin:0 0 22px;padding:0;list-style:none}
.foot-nav a{text-decoration:none;color:var(--muted);font-size:14px}
.foot-nav a:hover{color:var(--accent)}
footer h2{font-size:15px;color:var(--ink);margin:0 0 12px}
.foot-meta{display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:14px}
.foot-meta a{color:var(--muted)}
.chip[aria-current="page"]{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.card .name,.card .code{display:block}