:root {
  --bg: #0b0d10;
  --bg-elev: #12161b;
  --bg-elev2: #171c22;
  --border: #232a33;
  --border-bright: #2f3945;
  --fg: #e6edf3;
  --fg-muted: #9aa7b4;
  --fg-dim: #6e7c8a;
  --accent: #5eead4;
  --accent-dim: #2dd4bf;
  --warn: #fbbf24;
  --danger: #f87171;
  --ok: #4ade80;
  --code-bg: #0d1117;
  --radius: 10px;
  --maxw: 1080px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

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

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* ---------- header ---------- */
header.site {
  border-bottom: 1px solid var(--border);
  background: rgba(11,13,16,.9);
  backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 50;
}
.nav { display: flex; align-items: center; gap: 22px; height: 58px; }
.brand { font-weight: 650; letter-spacing: -.01em; color: var(--fg); font-size: 15px; }
.brand span { color: var(--accent); }
.nav-links { display: flex; gap: 18px; margin-left: auto; flex-wrap: wrap; }
.nav-links a { color: var(--fg-muted); font-size: 14px; }
.nav-links a:hover { color: var(--fg); text-decoration: none; }

/* ---------- disclosure ---------- */
.disclosure {
  background: #14110a;
  border-bottom: 1px solid #3a2f14;
  color: #e3cf9a;
  font-size: 12.5px;
  padding: 9px 0;
}
.disclosure strong { color: var(--warn); }

/* ---------- hero ---------- */
.hero { padding: 62px 0 42px; border-bottom: 1px solid var(--border); }
.hero h1 {
  font-size: clamp(30px, 5vw, 46px);
  line-height: 1.12;
  margin: 0 0 16px;
  letter-spacing: -.025em;
  font-weight: 680;
}
.hero p.lede { font-size: 17.5px; color: var(--fg-muted); max-width: 68ch; margin: 0 0 26px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 20px; border-radius: 8px;
  font-size: 14.5px; font-weight: 560; cursor: pointer;
  border: 1px solid var(--border-bright);
  background: var(--bg-elev); color: var(--fg);
  transition: border-color .14s, background .14s;
  font-family: inherit;
}
.btn:hover { border-color: var(--accent-dim); text-decoration: none; }
.btn-primary {
  background: var(--accent); color: #06231f; border-color: var(--accent);
  font-weight: 620;
}
.btn-primary:hover { background: var(--accent-dim); border-color: var(--accent-dim); }
.btn:disabled { opacity: .45; cursor: not-allowed; }

/* ---------- sections ---------- */
section { padding: 46px 0; border-bottom: 1px solid var(--border); }
section h2 {
  font-size: 23px; margin: 0 0 8px; letter-spacing: -.015em; font-weight: 640;
}
section > .wrap > p.sub { color: var(--fg-muted); margin: 0 0 26px; max-width: 72ch; }

.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(268px, 1fr)); }

.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  transition: border-color .14s;
}
.card:hover { border-color: var(--border-bright); }
.card h3 { margin: 0 0 7px; font-size: 15.5px; font-weight: 600; }
.card p { margin: 0; color: var(--fg-muted); font-size: 13.8px; }
a.card { display: block; color: inherit; }
a.card:hover { text-decoration: none; border-color: var(--accent-dim); }
.card .tag {
  display: inline-block; font-family: var(--mono); font-size: 11px;
  color: var(--fg-dim); border: 1px solid var(--border);
  padding: 1px 7px; border-radius: 20px; margin-bottom: 9px;
}

/* ---------- doctor ---------- */
.doctor-shell { display: grid; grid-template-columns: 1fr; gap: 20px; }
.qblock { margin-bottom: 26px; }
.qblock > label.qlabel {
  display: block; font-weight: 600; margin-bottom: 11px; font-size: 15px;
}
.opts { display: grid; gap: 8px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.opt {
  display: flex; align-items: center; gap: 9px;
  padding: 11px 13px; border: 1px solid var(--border);
  border-radius: 8px; background: var(--bg-elev); cursor: pointer;
  font-size: 13.8px; transition: border-color .14s, background .14s;
}
.opt:hover { border-color: var(--border-bright); }
.opt.selected { border-color: var(--accent); background: #0f1f1d; }
.opt input { accent-color: var(--accent); margin: 0; }

#result { margin-top: 8px; }
.diag {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius); padding: 20px; margin-bottom: 16px;
}
.diag h3 { margin: 0 0 10px; font-size: 17px; }
.diag .rootcause {
  color: var(--fg-muted); font-size: 14px; margin: 0 0 4px;
  padding-bottom: 14px; border-bottom: 1px solid var(--border);
}
ol.steps { margin: 16px 0 0; padding-left: 22px; }
ol.steps li { margin-bottom: 9px; font-size: 14.2px; }

pre {
  background: var(--code-bg); border: 1px solid var(--border);
  border-radius: 8px; padding: 14px; overflow-x: auto;
  font-family: var(--mono); font-size: 12.7px; line-height: 1.6;
  margin: 14px 0; color: #c9d5e1;
}
code { font-family: var(--mono); font-size: .92em; }
:not(pre) > code {
  background: var(--bg-elev2); padding: 1.5px 5px; border-radius: 4px;
  border: 1px solid var(--border); color: #d5e0ec;
}

.codewrap { position: relative; }
.copybtn {
  position: absolute; top: 8px; right: 8px;
  font-size: 11px; padding: 4px 9px; border-radius: 5px;
  background: var(--bg-elev2); border: 1px solid var(--border-bright);
  color: var(--fg-muted); cursor: pointer; font-family: inherit;
}
.copybtn:hover { color: var(--fg); border-color: var(--accent-dim); }

.gotchas {
  background: #14110a; border: 1px solid #3a2f14;
  border-radius: 8px; padding: 14px 16px; margin: 16px 0;
}
.gotchas strong { color: var(--warn); font-size: 13px; display: block; margin-bottom: 7px; }
.gotchas ul { margin: 0; padding-left: 19px; }
.gotchas li { font-size: 13.4px; color: #dcd0ad; margin-bottom: 5px; }

.badge {
  display: inline-block; font-family: var(--mono); font-size: 10.5px;
  padding: 2px 8px; border-radius: 20px; margin-left: 8px;
  vertical-align: middle; font-weight: 500;
}
.badge-unverified { background: #2a1f0a; color: var(--warn); border: 1px solid #4a3813; }
.badge-verified { background: #0d2417; color: var(--ok); border: 1px solid #1c4430; }

/* ---------- referral block ---------- */
.refbox {
  background: linear-gradient(180deg, #10201e 0%, var(--bg-elev) 100%);
  border: 1px solid #1e4038; border-radius: var(--radius);
  padding: 20px; margin: 22px 0;
}
.refbox h3 { margin: 0 0 8px; font-size: 16px; }
.refbox p { margin: 0 0 14px; color: var(--fg-muted); font-size: 13.8px; }
.refbox .fineprint { font-size: 12px; color: var(--fg-dim); margin: 11px 0 0; }

/* ---------- doctor entry strip ---------- */
.doctorstrip {
  display: flex; align-items: center; justify-content: space-between; gap: 18px;
  border: 1px dashed var(--border-bright); border-radius: var(--radius);
  padding: 16px 20px; margin: 22px 0;
}
.doctorstrip h3 { margin: 0 0 4px; font-size: 15px; }
.doctorstrip p { margin: 0; color: var(--fg-muted); font-size: 13.5px; }
.doctorstrip .btn { flex-shrink: 0; }

/* ---------- table ---------- */
table { width: 100%; border-collapse: collapse; font-size: 13.6px; margin: 16px 0; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--fg-muted); font-weight: 600; font-size: 12.5px; text-transform: uppercase; letter-spacing: .04em; }
tbody tr:hover { background: var(--bg-elev); }

/* ---------- footer ---------- */
footer.site { padding: 34px 0 46px; color: var(--fg-dim); font-size: 13px; }
footer.site .cols { display: flex; gap: 40px; flex-wrap: wrap; margin-bottom: 22px; }
footer.site h4 { color: var(--fg-muted); font-size: 12px; text-transform: uppercase; letter-spacing: .05em; margin: 0 0 9px; }
footer.site ul { list-style: none; margin: 0; padding: 0; }
footer.site li { margin-bottom: 6px; }
footer.site a { color: var(--fg-muted); }

.muted { color: var(--fg-muted); }
.dim { color: var(--fg-dim); }
.small { font-size: 12.8px; }
.hidden { display: none !important; }
.spinner { color: var(--fg-muted); font-size: 14px; }