:root {
  --bg:       #1e1e24;
  --surface:  #25252e;
  --border:   #32323e;
  --text:     #f7ebe8;
  --muted:    #9a9aaa;
  --accent:   #f79d5c;
  --accent-bg:rgba(247,157,92,0.08);
  --mono: ui-monospace,'Cascadia Code','SF Mono',Menlo,'Courier New',monospace;
  --sans: ui-sans-serif,system-ui,-apple-system,'Segoe UI',Helvetica,sans-serif;
  --nav-w: 212px;
  --r: 8px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}

::selection{background:var(--accent);color:var(--bg)}

body{
  font-family:var(--sans);
  font-size:15px;
  line-height:1.65;
  color:var(--text);
  background:var(--bg);
}

/* ── Layout ── */
.layout{
  display:grid;
  grid-template-columns:var(--nav-w) 1fr;
  min-height:100vh;
}

/* ── Sidebar ── */
.sidebar{
  position:sticky;
  top:0;
  height:100vh;
  overflow-y:auto;
  border-right:1px solid var(--border);
  display:flex;
  flex-direction:column;
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  padding:20px 20px 18px;
  border-bottom:1px solid var(--border);
  text-decoration:none;
  color:var(--text);
  flex-shrink:0;
}

.brand img{border-radius:6px;flex-shrink:0}

.brand-name{
  font-family:var(--mono);
  font-size:0.76rem;
  font-weight:600;
  color:var(--text);
  line-height:1.3;
  letter-spacing:-0.01em;
}

nav{
  flex:1;
  display:flex;
  flex-direction:column;
  padding:12px 0;
}

nav a{
  font-family:var(--mono);
  font-size:0.74rem;
  color:var(--muted);
  text-decoration:none;
  padding:7px 20px;
  border-left:2px solid transparent;
  transition:color 0.1s,background 0.1s,border-color 0.1s;
  letter-spacing:0.02em;
}

nav a:hover{color:var(--text);background:var(--accent-bg)}

nav a.active{
  color:var(--accent);
  border-left-color:var(--accent);
  background:var(--accent-bg);
  font-weight:500;
}

.sidebar-foot{
  padding:14px 20px;
  border-top:1px solid var(--border);
  font-size:0.72rem;
  color:var(--muted);
  flex-shrink:0;
}

.sidebar-foot a{color:var(--muted);text-decoration:none}
.sidebar-foot a:hover{color:var(--accent)}

/* ── Main ── */
main{
  max-width:700px;
  width:100%;
  margin:0 auto;
  padding:48px 48px 80px;
}

/* ── Type ── */
.page-title{
  font-size:1.45rem;
  font-weight:700;
  letter-spacing:-0.03em;
  color:var(--text);
  margin-bottom:14px;
  line-height:1.2;
}

h2{
  font-family:var(--mono);
  font-size:0.67rem;
  font-weight:600;
  text-transform:uppercase;
  letter-spacing:0.14em;
  color:var(--accent);
  margin:48px 0 18px;
}

h2:first-child{margin-top:0}

h3{
  font-size:0.88rem;
  font-weight:600;
  color:var(--text);
  margin:22px 0 8px;
}

h3:first-child{margin-top:0}

p{
  color:var(--muted);
  line-height:1.72;
  margin-bottom:14px;
}

p:last-child{margin-bottom:0}

a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

ul,ol{padding-left:18px;color:var(--muted)}
li{margin-bottom:6px;line-height:1.65}

strong{color:var(--text);font-weight:600}

code{
  font-family:var(--mono);
  font-size:0.82em;
  background:var(--surface);
  border:1px solid var(--border);
  padding:1px 5px;
  border-radius:3px;
  color:var(--text);
}

/* ── Feature sections ── */
.feature-section{
  display:flex;
  gap:28px;
  align-items:flex-start;
  margin:20px 0 48px;
  padding:20px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--r);
}

.phone-shot{
  flex-shrink:0;
  width:180px;
  border-radius:14px;
  box-shadow:0 8px 28px rgba(0,0,0,0.5);
  display:block;
}

.section-bullets{
  flex:1;
  list-style:none;
  padding:0;
  margin-top:2px;
}

.section-bullets li{
  position:relative;
  padding-left:16px;
  margin-bottom:10px;
  font-size:0.875rem;
  color:var(--muted);
  line-height:1.62;
}

.section-bullets li::before{
  content:'—';
  position:absolute;
  left:0;
  color:var(--border);
  font-family:var(--mono);
  font-size:0.8rem;
}

/* ── Card grid (index) ── */
.card-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(160px,1fr));
  gap:10px;
  margin:20px 0;
}

.card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--r);
  padding:14px 16px;
  text-decoration:none;
  color:inherit;
  display:block;
  transition:border-color 0.12s,background 0.12s;
}

.card:hover{
  border-color:var(--accent);
  background:var(--accent-bg);
  text-decoration:none;
}

.card h3{
  font-family:var(--mono);
  font-size:0.74rem;
  font-weight:600;
  color:var(--text);
  margin:0 0 6px;
  letter-spacing:0.02em;
}

.card p{
  font-size:0.8rem;
  color:var(--muted);
  margin:0;
  line-height:1.5;
}

/* ── Quick start ── */
ol.quickstart{
  padding-left:20px;
}

ol.quickstart li{
  color:var(--muted);
  margin-bottom:10px;
  line-height:1.68;
  font-size:0.9rem;
}

/* ── Troubleshooting list ── */
ul.trouble{padding-left:18px}
ul.trouble li{
  color:var(--muted);
  margin-bottom:12px;
  line-height:1.65;
  font-size:0.9rem;
}

/* ── Step list (onboarding) ── */
.step-list{list-style:none;padding:0;counter-reset:steps}
.step-list li{
  display:flex;
  gap:16px;
  align-items:flex-start;
  margin-bottom:24px;
  counter-increment:steps;
}
.step-list li::before{
  content:counter(steps);
  font-family:var(--mono);
  font-size:0.72rem;
  font-weight:700;
  color:var(--bg);
  background:var(--accent);
  width:22px;
  height:22px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
  margin-top:2px;
}
.step-list li>div>strong{
  display:block;
  font-size:0.9rem;
  font-weight:600;
  color:var(--text);
  margin-bottom:4px;
}
.step-list li>div>p{
  font-size:0.875rem;
  margin:0;
}

/* ── Divider ── */
.divider{
  border:none;
  border-top:1px solid var(--border);
  margin:40px 0;
}

/* ── GitHub star button ── */
.gh-star{
  display:inline-flex;
  align-items:center;
  gap:4px;
  padding:3px 7px 3px 5px;
  border:1px solid var(--border);
  border-radius:4px;
  background:var(--surface);
  color:var(--muted);
  text-decoration:none;
  font-family:var(--mono);
  font-size:0.70rem;
  line-height:1;
  transition:border-color 0.12s,color 0.12s,background 0.12s;
  white-space:nowrap;
  vertical-align:middle;
}
.gh-star:hover{
  border-color:var(--accent);
  color:var(--accent);
  background:var(--accent-bg);
  text-decoration:none;
}
.gh-star svg{flex-shrink:0;opacity:0.65;transition:opacity 0.12s}
.gh-star:hover svg{opacity:1}
.gh-star-sep{
  display:inline-block;
  width:1px;
  height:10px;
  background:var(--border);
  margin:0 1px;
}
.gh-star-count{font-weight:600}
.sidebar-foot-lic{margin-left:4px}

/* ── Nav extras ── */
.nav-sep{
  display:block;
  height:1px;
  background:var(--border);
  margin:8px 12px 4px;
}

nav a.nav-ext{
  font-size:0.70rem;
  opacity:0.6;
}

.nav-toggle-btn{display:none}

/* ── Responsive ── */
@media(max-width:680px){
  .layout{grid-template-columns:1fr}

  .sidebar{
    position:relative;
    height:auto;
    border-right:none;
    border-bottom:1px solid var(--border);
  }

  .brand{padding:14px 52px 12px 16px}

  .nav-toggle-btn{
    display:flex;
    align-items:center;
    justify-content:center;
    position:absolute;
    right:14px;
    top:12px;
    width:36px;
    height:36px;
    background:none;
    border:1px solid var(--border);
    border-radius:6px;
    cursor:pointer;
    color:var(--muted);
    transition:color 0.1s,border-color 0.1s;
  }

  .nav-toggle-btn:hover{color:var(--text);border-color:var(--accent)}

  nav{
    display:none;
    flex-direction:column;
    padding:8px 0 4px;
    border-top:1px solid var(--border);
  }

  nav.open{display:flex}

  nav a{
    padding:9px 20px;
    border-left:2px solid transparent;
    border-bottom:none;
    font-size:0.74rem;
  }

  nav a.active{
    border-left-color:var(--accent);
  }

  .sidebar-foot{display:none}

  main{padding:28px 20px 56px}

  .feature-section{flex-direction:column;gap:18px}
  .phone-shot{width:100%;max-width:220px}

  .card-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}
}