:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #16181d;
  --muted: #5c6370;
  --accent: #0b6bcb;
  --border: #e3e6ea;
  --card: #f7f8fa;
  --warn-bg: #fff8e1;
  --warn-fg: #6b5300;
  --warn-border: #e0a800;
  --maxw: 820px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e0f12;
    --fg: #e7e9ee;
    --muted: #9aa2af;
    --accent: #7ab8ff;
    --border: #262a31;
    --card: #16181d;
    --warn-bg: #2a2410;
    --warn-fg: #f0d98a;
    --warn-border: #7a6410;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 1.25rem; }

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

/* Header */
.site-header { border-bottom: 1px solid var(--border); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; padding: 1rem 1.25rem; }
.brand { font-weight: 700; font-size: 1.15rem; letter-spacing: -0.01em; }
.brand span { color: var(--accent); }
.nav a { margin-left: 1.25rem; color: var(--muted); font-size: .95rem; }

/* Hero */
.hero { padding: 5rem 0 3rem; }
.hero h1 { font-size: clamp(2rem, 5vw, 3rem); line-height: 1.1; letter-spacing: -0.02em; margin: 0 0 1rem; }
.hero p.lead { font-size: 1.2rem; color: var(--muted); max-width: 46ch; margin: 0 0 2rem; }
.badge { display: inline-block; font-size: .8rem; font-weight: 600; color: var(--accent);
         background: color-mix(in srgb, var(--accent) 12%, transparent); padding: .3rem .7rem;
         border-radius: 999px; margin-bottom: 1.25rem; }

/* Feature / tool grid */
.section-title { font-size: 1.15rem; margin: 1rem 0 .5rem; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 1rem; padding: .5rem 0 4rem; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 1.25rem; }
.card h3 { margin: 0 0 .4rem; font-size: 1.05rem; display: flex; align-items: center; }
.card p { margin: 0; color: var(--muted); font-size: .95rem; }
.card-link { display: block; transition: border-color .15s, transform .15s; }
.card-link:hover { border-color: var(--accent); transform: translateY(-2px); text-decoration: none; }
.card-muted { opacity: .7; }
.tag { font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em;
       color: #197a2e; background: color-mix(in srgb, #22a03a 16%, transparent);
       padding: .12rem .5rem; border-radius: 999px; }

/* Content pages */
main.doc { padding: 2.5rem 0 4rem; }
main.doc h1 { font-size: 1.9rem; margin-bottom: .25rem; letter-spacing: -0.01em; }
main.doc h2 { margin-top: 2rem; font-size: 1.25rem; }
main.doc h3 { margin-top: 1.5rem; font-size: 1.05rem; }
.meta { color: var(--muted); font-size: .9rem; }

table { border-collapse: collapse; width: 100%; margin: 1rem 0; font-size: .95rem;
        display: block; overflow-x: auto; }
th, td { border: 1px solid var(--border); padding: .5rem .65rem; text-align: left; vertical-align: top; }
th { background: var(--card); }
code { background: color-mix(in srgb, var(--muted) 22%, transparent); padding: .1rem .35rem; border-radius: 4px; font-size: .9em; }

.draft { border: 2px solid var(--warn-border); background: var(--warn-bg); color: var(--warn-fg);
         padding: .9rem 1rem; border-radius: 10px; margin: 1rem 0 1.5rem; font-size: .95rem; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); color: var(--muted); font-size: .85rem; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between;
                     padding: 1.5rem 1.25rem; }
.site-footer a { color: var(--muted); }