/* ============================================================
   USS content styles — scoped to `.uss-intro`
   Embedded on the docs.synoti.com Introduction page.
   Maps the USS design tokens to the docs theme so the embedded
   content follows docs.synoti.com light/dark automatically.
   ============================================================ */

.uss-intro{
  --surface:var(--card);
  --surface-2:var(--muted);
  --surface-3:color-mix(in srgb,var(--foreground) 8%,transparent);
  --text:var(--foreground);
  --muted:var(--muted-foreground);
  --faint:color-mix(in srgb,var(--foreground) 50%,var(--background));
  --border-strong:color-mix(in srgb,var(--foreground) 22%,var(--border));
  --accent:var(--primary);
  --accent-hover:var(--primary);
  --accent-soft:color-mix(in srgb,var(--primary) 12%,transparent);
  --accent-text:var(--primary);
  --ok:#15803d; --ok-soft:#e7f6ec; --warn:#a16207; --warn-soft:#fdf6e3;
  --crit:#c2410c; --crit-soft:#fdeee6; --sev:#b91c1c;
  --code-bg:var(--muted); --code-text:var(--foreground);
  --code-head:color-mix(in srgb,var(--foreground) 6%,transparent);
  --shadow:0 1px 2px rgba(16,24,40,.05);
  --shadow-lg:0 10px 30px rgba(16,24,40,.12);
  --mono:ui-monospace,SFMono-Regular,"Cascadia Code",Menlo,Consolas,"Liberation Mono",monospace;
  color:var(--content-text);
  line-height:1.65;
}
html.dark .uss-intro{
  --ok:#4ade80; --ok-soft:#10261a; --warn:#facc15; --warn-soft:#2a2410;
  --crit:#fb923c; --crit-soft:#2c1a10; --sev:#f87171;
  --shadow:0 1px 2px rgba(0,0,0,.4); --shadow-lg:0 12px 32px rgba(0,0,0,.5);
}
.uss-intro svg.i{width:18px;height:18px;flex:none;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ---- section blocks ---- */
.uss-intro .page{display:block;margin:0 0 44px;padding-top:30px;border-top:1px solid var(--border)}
.uss-intro .page:first-of-type{border-top:0;padding-top:0}

/* ---- typography ---- */
.uss-intro h1{font-size:34px;line-height:1.2;letter-spacing:-.02em;margin:0 0 12px;font-weight:700}
.uss-intro h2{font-size:24px;letter-spacing:-.01em;margin:44px 0 12px;font-weight:700}
.uss-intro h3{font-size:19px;letter-spacing:-.01em;margin:26px 0 8px;font-weight:700}
.uss-intro h4{font-size:15.5px;margin:22px 0 6px}
.uss-intro p{margin:0 0 14px}
.uss-intro p,.uss-intro li{max-width:76ch}
.uss-intro .page > h1 + p{font-size:17px;color:var(--muted)}
.uss-intro ul,.uss-intro ol{padding-left:22px}
.uss-intro li{margin:4px 0}
.uss-intro li::marker{color:var(--faint)}
.uss-intro a{color:var(--accent)}
.uss-intro code{font-family:var(--mono);font-size:.86em;background:var(--surface-3);color:var(--code-text);padding:2px 6px;border-radius:5px}

/* ---- hero ---- */
.uss-intro .hero{padding:30px 32px;border-radius:16px;border:1px solid var(--border);background:radial-gradient(1200px 300px at 0% 0%,var(--accent-soft),transparent 60%),var(--surface);box-shadow:var(--shadow);margin-bottom:28px}
.uss-intro .hero h1{font-size:38px;margin:12px 0 10px}
.uss-intro .hero p{margin:0;font-size:17px;color:var(--muted)}
.uss-intro .badge{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.02em;color:var(--accent-text);background:var(--accent-soft);padding:3px 10px;border-radius:999px}

/* ---- stats ---- */
.uss-intro .stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:22px}
.uss-intro .stat{background:var(--surface-2);border:1px solid var(--border);border-radius:10px;padding:12px 14px}
.uss-intro .stat b{display:block;font-size:22px;letter-spacing:-.02em}
.uss-intro .stat span{font-size:12.5px;color:var(--muted)}

/* ---- cards ---- */
.uss-intro .cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px;margin:18px 0 24px}
.uss-intro .card{display:block;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:18px;box-shadow:var(--shadow);color:var(--text);transition:border-color .15s,transform .15s,box-shadow .15s}
.uss-intro a.card:hover{text-decoration:none;color:var(--text);border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.uss-intro .card .ic{width:36px;height:36px;border-radius:9px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent);margin-bottom:12px}
.uss-intro .card h4{margin:0 0 6px;font-size:15px}
.uss-intro .card p{margin:0;font-size:13.5px;color:var(--muted);line-height:1.55}
.uss-intro .card .more{display:inline-block;margin-top:10px;font-size:13px;color:var(--accent);font-weight:600}

/* ---- tables ---- */
.uss-intro .table-wrap{overflow-x:auto;margin:14px 0 22px;border:1px solid var(--border);border-radius:10px;background:var(--surface);box-shadow:var(--shadow)}
.uss-intro .table-wrap table{border-collapse:collapse;width:100%;font-size:14px}
.uss-intro .table-wrap th,.uss-intro .table-wrap td{padding:10px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--border)}
.uss-intro .table-wrap tr:last-child td{border-bottom:none}
.uss-intro .table-wrap th{background:var(--surface-2);font-weight:600;font-size:12.5px;letter-spacing:.03em;text-transform:uppercase;color:var(--muted)}
.uss-intro .table-wrap td[rowspan]{background:var(--surface-2);font-weight:600}
.uss-intro .table-wrap td code{white-space:nowrap}

/* ---- callouts ---- */
.uss-intro .callout{display:flex;gap:12px;border:1px solid var(--border);border-left:4px solid var(--accent);background:var(--accent-soft);padding:13px 16px;border-radius:10px;margin:18px 0;font-size:14.5px}
.uss-intro .callout svg{color:var(--accent);margin-top:2px}
.uss-intro .callout.warn{border-left-color:var(--warn);background:var(--warn-soft)}
.uss-intro .callout.warn svg{color:var(--warn)}
.uss-intro .callout p{margin:0}

/* ---- code blocks ---- */
.uss-intro .code{border:1px solid var(--border);border-radius:10px;overflow:hidden;margin:14px 0 20px;background:var(--code-bg)}
.uss-intro .code-head{display:flex;align-items:center;justify-content:space-between;padding:6px 14px;background:var(--code-head);border-bottom:1px solid var(--border);font:12px var(--mono);color:var(--muted)}
.uss-intro .code pre{margin:0;padding:14px 16px;overflow-x:auto;font:13px/1.6 var(--mono);color:var(--code-text)}
.uss-intro .code pre code{background:none;padding:0;font-size:inherit}

/* ---- flow ---- */
.uss-intro .flow{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 22px;counter-reset:st}
.uss-intro .flow div{flex:1 1 120px;background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:10px 12px;font-size:13.5px;font-weight:600;box-shadow:var(--shadow)}
.uss-intro .flow div::before{counter-increment:st;content:counter(st);display:inline-grid;place-items:center;width:20px;height:20px;border-radius:50%;background:var(--accent);color:#fff;font-size:11px;margin-right:6px;vertical-align:1px}
.uss-intro .flow small{display:block;font-weight:400;color:var(--muted);font-size:12px;margin-top:3px}

/* ---- steps ---- */
.uss-intro .steps{list-style:none;padding:0;counter-reset:s}
.uss-intro .steps > li{position:relative;padding:0 0 18px 30px;margin:0 0 0 14px;border-left:2px solid var(--border)}
.uss-intro .steps > li:last-child{border-left-color:transparent;padding-bottom:0}
.uss-intro .steps > li::before{counter-increment:s;content:counter(s);position:absolute;left:-15px;top:-2px;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--surface);border:2px solid var(--accent);color:var(--accent);font-weight:700;font-size:13px}
.uss-intro .steps > li > strong{display:block}

/* ---- hardening checklist ---- */
.uss-intro .check{list-style:none;padding:0;counter-reset:chk}
.uss-intro .check li{position:relative;padding:12px 14px 12px 50px;margin:0 0 8px;background:var(--surface);border:1px solid var(--border);border-radius:10px;max-width:none}
.uss-intro .check li::before{counter-increment:chk;content:counter(chk);position:absolute;left:14px;top:11px;width:24px;height:24px;border-radius:50%;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent-text);font-weight:700;font-size:12.5px}

/* ---- chips ---- */
.uss-intro .chips{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0 14px}
.uss-intro .chip{font-size:12.5px;padding:3px 10px;border-radius:99px;border:1px solid var(--border);background:var(--surface);color:var(--muted)}

/* ---- delivery / feature-type pills ---- */
.uss-intro .dl{display:inline-block;font-size:11.5px;font-weight:600;padding:2px 9px;border-radius:999px;border:1px solid;white-space:nowrap;margin:1px 2px 1px 0}
.uss-intro .dl.core{color:var(--ok);background:var(--ok-soft);border-color:color-mix(in srgb,var(--ok) 35%,transparent)}
.uss-intro .dl.addon{color:var(--accent-text);background:var(--accent-soft);border-color:color-mix(in srgb,var(--accent) 35%,transparent)}
.uss-intro .dl.custom{color:var(--warn);background:var(--warn-soft);border-color:color-mix(in srgb,var(--warn) 35%,transparent)}
.uss-intro .dl.svc{color:var(--muted);background:var(--surface-2);border-color:var(--border-strong)}
.uss-intro .delivery{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin:-4px 0 14px;font-size:13px;color:var(--muted)}

/* ---- severity level pills ---- */
.uss-intro .lv{display:inline-block;min-width:56px;text-align:center;border-radius:6px;padding:1px 8px;font:600 12.5px var(--mono)}
.uss-intro .lv.l{background:var(--surface-3);color:var(--muted)}
.uss-intro .lv.m{background:var(--warn-soft);color:var(--warn)}
.uss-intro .lv.h{background:var(--crit-soft);color:var(--crit)}
.uss-intro .lv.c{background:var(--sev);color:#fff}

/* ---- glossary ---- */
.uss-intro dl.glossary{display:grid;grid-template-columns:200px 1fr;border:1px solid var(--border);border-radius:10px;overflow:hidden;background:var(--surface);margin:14px 0}
.uss-intro dl.glossary dt,.uss-intro dl.glossary dd{margin:0;padding:11px 14px;border-bottom:1px solid var(--border)}
.uss-intro dl.glossary dt{font-weight:600;background:var(--surface-2)}
.uss-intro dl.glossary dd{color:var(--muted)}
.uss-intro dl.glossary dt:last-of-type,.uss-intro dl.glossary dd:last-of-type{border-bottom:none}

/* ---- diagram ---- */
.uss-intro .diagram{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:18px;margin:18px 0 24px;box-shadow:var(--shadow);overflow-x:auto}
.uss-intro .diagram svg{width:100%;height:auto;display:block;min-width:640px}
.uss-intro .diagram .box{fill:var(--surface-2);stroke:var(--border-strong)}
.uss-intro .diagram .box-accent{fill:var(--accent-soft);stroke:var(--accent)}
.uss-intro .diagram text{fill:var(--text);font-family:var(--font-sans)}
.uss-intro .diagram .sub{fill:var(--muted);font-size:12px}
.uss-intro .diagram .line{stroke:var(--muted);stroke-width:1.6;fill:none}
.uss-intro .diagram .lbl{fill:var(--accent-text);font-size:11.5px;font-family:var(--mono);font-weight:600}
.uss-intro .diagram .lbl-bg{fill:var(--surface)}
.uss-intro .diagram .arrowhead{fill:var(--muted)}

/* ---- responsive ---- */
@media (max-width:760px){
  .uss-intro .stats{grid-template-columns:repeat(2,1fr)}
  .uss-intro dl.glossary{grid-template-columns:1fr}
  .uss-intro dl.glossary dt{border-bottom:none}
}

/* ---- table-of-contents group labels (docs rail) ---- */
.toc-aside .toc-group{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:color-mix(in srgb,var(--foreground) 50%,var(--background));margin:12px 0 4px;padding-left:12px}
.toc-aside .toc-group:first-child{margin-top:0}