:root{
  --bg:#f5f3fa;
  --surface:#ffffff;
  --surface-2:#ece7f7;
  --line:rgba(124,58,237,0.16);
  --ink:#211a33;
  --ink-dim:#5b5270;
  --accent:#7c3aed;
  --accent-strong:#5b21b6;
  --accent-soft:rgba(124,58,237,0.10);
  --good:#059669;
  --good-soft:rgba(5,150,105,0.12);
  --warn:#b45309;
  --warn-soft:rgba(180,83,9,0.12);
  --danger:#dc2626;
  --danger-soft:rgba(220,38,38,0.10);

  --code-bg:#12101c;
  --code-line:rgba(167,139,250,0.16);
  --code-ink:#e9e4f7;
  --code-dim:#8f86ab;
  --code-accent:#c4b5fd;

  --font-mono:'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
  --font-body:'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0d0b14;
    --surface:#151020;
    --surface-2:#1a1425;
    --line:rgba(167,139,250,0.18);
    --ink:#e9e4f7;
    --ink-dim:#b9b0d1;
    --accent:#a78bfa;
    --accent-strong:#c4b5fd;
    --accent-soft:rgba(167,139,250,0.14);
    --good:#34d399;
    --good-soft:rgba(52,211,153,0.14);
    --warn:#fbbf24;
    --warn-soft:rgba(251,191,36,0.14);
    --danger:#f87171;
    --danger-soft:rgba(248,113,113,0.14);
  }
}
:root[data-theme="dark"]{
  --bg:#0d0b14;
  --surface:#151020;
  --surface-2:#1a1425;
  --line:rgba(167,139,250,0.18);
  --ink:#e9e4f7;
  --ink-dim:#b9b0d1;
  --accent:#a78bfa;
  --accent-strong:#c4b5fd;
  --accent-soft:rgba(167,139,250,0.14);
  --good:#34d399;
  --good-soft:rgba(52,211,153,0.14);
  --warn:#fbbf24;
  --warn-soft:rgba(251,191,36,0.14);
  --danger:#f87171;
  --danger-soft:rgba(248,113,113,0.14);
}

*{box-sizing:border-box;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.mono{font-family:var(--font-mono);}
h1,h2,h3{text-wrap:balance; color:var(--ink); font-weight:600; letter-spacing:-0.01em;}
p{color:var(--ink); max-width:64ch;}
a{color:var(--accent);}
code{font-family:var(--font-mono); font-size:0.88em;}
img{max-width:100%;}

::selection{background:var(--accent-soft);}

/* ---------- shell ---------- */
.shell{
  max-width:980px;
  margin:0 auto;
  padding:0 28px 96px;
}

header.top{
  padding:40px 0 28px;
  border-bottom:1px solid var(--line);
  margin-bottom:40px;
}
.brand-row{
  display:flex;
  align-items:center;
  gap:12px;
  text-decoration:none;
  width:fit-content;
}
.brand-row .mark{width:34px; height:34px; flex:none;}
.brand-row .word{
  font-family:var(--font-mono);
  font-size:1.05rem;
  letter-spacing:0.03em;
  color:var(--ink);
}
.brand-row .word b{color:var(--accent); font-weight:700;}
.chip{
  font-family:var(--font-mono);
  font-size:0.7rem;
  letter-spacing:0.06em;
  text-transform:uppercase;
  padding:3px 9px;
  border-radius:999px;
  border:1px solid var(--line);
  color:var(--ink-dim);
  background:var(--surface-2);
}

/* ---------- layout: sidebar + main ---------- */
.layout{
  display:grid;
  grid-template-columns:200px minmax(0,1fr);
  gap:48px;
  align-items:start;
}
nav.sidebar{
  position:sticky;
  top:28px;
  display:flex;
  flex-direction:column;
  gap:4px;
  font-family:var(--font-mono);
  font-size:0.82rem;
}
nav.sidebar a{
  display:flex;
  align-items:center;
  gap:9px;
  padding:7px 10px;
  border-radius:8px;
  color:var(--ink-dim);
  text-decoration:none;
  border-left:2px solid transparent;
}
nav.sidebar a:hover{color:var(--ink);}
nav.sidebar a.current{
  color:var(--accent);
  background:var(--accent-soft);
  border-left-color:var(--accent);
}
nav.sidebar .pagenum{
  width:18px; height:18px; flex:none;
  display:flex; align-items:center; justify-content:center;
  clip-path:polygon(25% 0%,75% 0%,100% 50%,75% 100%,25% 100%,0% 50%);
  background:var(--surface-2);
  color:var(--ink-dim);
  font-weight:700;
  font-size:0.66rem;
}
nav.sidebar a.current .pagenum{background:var(--accent); color:var(--bg);}
:root[data-theme="dark"] nav.sidebar a.current .pagenum,
:root:not([data-theme="light"]) nav.sidebar a.current .pagenum{color:#0d0b14;}

main{min-width:0;}

@media (max-width:760px){
  .layout{grid-template-columns:1fr;}
  nav.sidebar{
    position:static;
    flex-direction:row;
    overflow-x:auto;
    border-bottom:1px solid var(--line);
    padding-bottom:14px;
    margin-bottom:8px;
  }
  nav.sidebar a{flex:none; border-left:none; border-bottom:2px solid transparent;}
  nav.sidebar a.current{border-left-color:transparent; border-bottom-color:var(--accent);}
}
section > .eyebrow{
  font-family:var(--font-mono);
  font-size:0.72rem;
  letter-spacing:0.12em;
  text-transform:uppercase;
  color:var(--accent);
  margin:0 0 8px;
}
section h2{font-size:1.7rem; margin:0 0 14px;}
section h3{font-size:1.05rem; margin:28px 0 10px;}
section > p{margin:0 0 14px;}

/* ---------- hex step badges ---------- */
.step-head{display:flex; align-items:center; gap:14px; margin-bottom:14px;}
.hexnum{
  flex:none;
  width:40px; height:40px;
  display:flex; align-items:center; justify-content:center;
  clip-path:polygon(25% 0%,75% 0%,100% 50%,75% 100%,25% 100%,0% 50%);
  background:linear-gradient(135deg, var(--accent), var(--accent-strong));
  color:var(--bg);
  font-family:var(--font-mono);
  font-weight:700;
  font-size:1.05rem;
}
:root[data-theme="dark"] .hexnum, :root:not([data-theme="light"]) .hexnum{color:#0d0b14;}

/* ---------- cards / tables ---------- */
.path-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px;
  padding:22px 22px 24px;
  margin-top:8px;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.path-card .tag{
  font-family:var(--font-mono);
  font-size:0.68rem;
  letter-spacing:0.1em;
  text-transform:uppercase;
  padding:3px 8px;
  border-radius:5px;
  width:fit-content;
  background:var(--surface-2);
  color:var(--ink-dim);
}
.path-card.bash .tag{background:var(--accent-soft); color:var(--accent);}
.path-card h3{margin:2px 0 0;}
.path-card p{font-size:0.94rem; color:var(--ink-dim); margin:0;}

.shot{
  margin:16px 0;
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
  background:var(--surface);
}
.shot img{display:block; width:100%;}
.shot figcaption{
  padding:10px 14px;
  font-size:0.82rem;
  color:var(--ink-dim);
  border-top:1px solid var(--line);
}

table{
  width:100%;
  border-collapse:collapse;
  font-size:0.88rem;
}
th,td{
  text-align:left;
  padding:9px 12px;
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
th{
  font-family:var(--font-mono);
  font-size:0.7rem;
  letter-spacing:0.06em;
  text-transform:uppercase;
  color:var(--ink-dim);
  font-weight:600;
}
td code{color:var(--accent);}
.table-scroll{overflow-x:auto; border:1px solid var(--line); border-radius:10px;}
.table-scroll table{border:none;}
.table-scroll th:first-child, .table-scroll td:first-child{padding-left:14px;}

/* ---------- terminal code panel ---------- */
.term{
  background:var(--code-bg);
  border:1px solid var(--code-line);
  border-radius:10px;
  overflow:hidden;
  margin:14px 0;
}
.term .bar{
  display:flex;
  align-items:center;
  gap:6px;
  padding:9px 12px;
  border-bottom:1px solid var(--code-line);
}
.term .bar span{width:9px; height:9px; border-radius:50%; display:block;}
.term .bar span:nth-child(1){background:#f87171;}
.term .bar span:nth-child(2){background:#fbbf24;}
.term .bar span:nth-child(3){background:#34d399;}
.term .bar label{
  margin-left:8px;
  font-family:var(--font-mono);
  font-size:0.68rem;
  color:var(--code-dim);
  letter-spacing:0.04em;
}
.term pre{
  margin:0;
  padding:14px 16px 16px;
  overflow-x:auto;
  font-family:var(--font-mono);
  font-size:0.83rem;
  line-height:1.6;
  color:var(--code-ink);
}
.term .c{color:var(--code-dim);}
.term .k{color:var(--code-accent);}

.callout{
  display:flex;
  gap:12px;
  padding:14px 16px;
  border-radius:10px;
  border:1px solid var(--line);
  background:var(--surface-2);
  font-size:0.92rem;
  margin:16px 0;
}
.callout .ico{flex:none; font-family:var(--font-mono); color:var(--accent); font-weight:700;}
.callout p{margin:0; color:var(--ink);}

/* ---------- misc ---------- */
ul.plain{padding-left:0; list-style:none; margin:0;}
ul.plain li{
  padding-left:20px;
  position:relative;
  margin-bottom:8px;
}
ul.plain li::before{
  content:"";
  position:absolute; left:0; top:9px;
  width:6px; height:6px;
  background:var(--accent);
  clip-path:polygon(25% 0%,75% 0%,100% 50%,75% 100%,25% 100%,0% 50%);
}

/* ---------- pager ---------- */
.pager{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
  margin-top:56px;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.pager-link{
  display:flex;
  flex-direction:column;
  gap:4px;
  padding:16px 18px;
  border:1px solid var(--line);
  border-radius:12px;
  text-decoration:none;
  background:var(--surface);
  min-width:0;
}
.pager-link:hover{border-color:var(--accent);}
.pager-link.next{grid-column:2; text-align:right; align-items:flex-end;}
.pager-link.prev{grid-column:1;}
.pager-label{
  font-family:var(--font-mono);
  font-size:0.7rem;
  letter-spacing:0.08em;
  text-transform:uppercase;
  color:var(--ink-dim);
}
.pager-title{
  font-family:var(--font-mono);
  font-weight:600;
  color:var(--ink);
}
@media (max-width:600px){
  .pager{grid-template-columns:1fr;}
  .pager-link.next{grid-column:1; text-align:left; align-items:flex-start;}
}

footer{
  margin-top:40px;
  padding-top:24px;
  border-top:1px solid var(--line);
  color:var(--ink-dim);
  font-size:0.85rem;
}

@media (prefers-reduced-motion: reduce){ html{scroll-behavior:auto;} }