:root {
  --bg: #f4f6fb;
  --ink: #17233a;
  --muted: #5d6c8c;
  --line: #d9e0ef;
  --panel: #ffffff;
  --navy: #1a2744;
  --red: #c1172c;
  --shadow: 0 18px 40px rgba(22, 34, 62, 0.12);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

.guide-bg {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(900px 420px at 100% -8%, rgba(193, 23, 44, 0.1), transparent 65%),
    radial-gradient(900px 420px at 0% 110%, rgba(26, 39, 68, 0.14), transparent 65%);
  pointer-events: none;
}

.guide-shell {
  max-width: 1080px;
  margin: 0 auto;
  padding: 34px 18px 64px;
  position: relative;
  z-index: 1;
  scroll-behavior: smooth;
}

.hero {
  background: linear-gradient(140deg, #ffffff, #f4f7ff 55%, #eef3ff);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 26px;
  margin-bottom: 16px;
}

.hero-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.hero h1 {
  margin: 14px 0 8px;
  font: 800 2.1rem/1.12 "Playfair Display", serif;
  color: var(--navy);
}

.hero-sub {
  margin: 0;
  color: var(--muted);
  max-width: 76ch;
}

.hero-chip {
  border: 1px solid #f2bfca;
  background: #fff6f8;
  color: #8f1024;
  border-radius: 999px;
  padding: 6px 11px;
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.hero-actions {
  margin-top: 16px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.hero-btn {
  display: inline-flex;
  align-items: center;
  padding: 9px 13px;
  border-radius: 10px;
  border: 1px solid #c8d5f1;
  text-decoration: none;
  color: var(--navy);
  background: #fff;
  font-weight: 700;
  cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
}

.hero-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(22, 34, 62, 0.12);
}

.hero-btn-primary {
  background: linear-gradient(120deg, #1d2d50, #2e4372);
  color: #fff;
  border-color: #1d2d50;
}

.hero-btn.is-active {
  outline: 2px solid rgba(46, 67, 114, 0.35);
  outline-offset: 2px;
}

#quick-start,
#workflows {
  scroll-margin-top: 24px;
}

.back-link {
  font-family: "JetBrains Mono", monospace;
  text-decoration: none;
  color: #293f6a;
  font-size: .84rem;
}

.grid-2 {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 14px;
}

.card {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 14px;
  box-shadow: 0 10px 28px rgba(23, 38, 69, 0.07);
  padding: 18px;
}

.card h2 {
  margin: 0 0 10px;
  color: var(--navy);
  font-size: 1.08rem;
}

.card h3 {
  margin: 0 0 6px;
  font-size: .95rem;
  color: #213963;
}

.card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.52;
}

.card ul,
.card ol {
  margin: 0;
  padding-left: 18px;
  line-height: 1.55;
}

.workflow-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.workflow-grid > div {
  border: 1px dashed #cad6ef;
  border-radius: 10px;
  background: #f8faff;
  padding: 12px;
}

.guide-foot {
  margin-top: 16px;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--muted);
  font-size: .9rem;
}

@media (max-width: 900px) {
  .grid-2,
  .workflow-grid {
    grid-template-columns: 1fr;
  }
}

/* ─── Dark mode ─────────────────────────────── */
[data-theme="dark"] {
  --bg:    #071420;
  --ink:   #e2eef8;
  --muted: #4d7a9e;
  --line:  #1e4060;
  --panel: #0d2035;
  --navy:  #9deaff;
  --red:   #f87171;
}
[data-theme="dark"] body {
  background: var(--bg);
  color: var(--ink);
}
[data-theme="dark"] .guide-bg {
  background:
    radial-gradient(900px 420px at 100% -8%, rgba(157,234,255,0.05), transparent 65%),
    radial-gradient(900px 420px at 0% 110%, rgba(13,32,53,0.6), transparent 65%);
}
[data-theme="dark"] .hero {
  background: linear-gradient(140deg, #0d2035, #112843 55%, #163352);
  border-color: var(--line);
}
[data-theme="dark"] .hero h1  { color: var(--navy); }
[data-theme="dark"] .hero-sub { color: var(--muted); }
[data-theme="dark"] .hero-chip {
  background: rgba(220, 38, 38, 0.15);
  border-color: rgba(220, 38, 38, 0.3);
  color: var(--red);
}
[data-theme="dark"] .hero-btn {
  background: var(--panel);
  color: var(--ink);
  border-color: var(--line);
}
[data-theme="dark"] .hero-btn-primary {
  background: linear-gradient(120deg, #0d2035, #163352);
  color: var(--ink);
  border-color: var(--line);
}
[data-theme="dark"] .back-link { color: var(--navy); }
[data-theme="dark"] .card {
  background: var(--panel);
  border-color: var(--line);
}
[data-theme="dark"] .card h2 { color: var(--navy); }
[data-theme="dark"] .card h3 { color: #8ab4d4; }
[data-theme="dark"] .card p,
[data-theme="dark"] .card ul,
[data-theme="dark"] .card ol { color: var(--muted); }
[data-theme="dark"] .workflow-grid > div {
  background: #071420;
  border-color: var(--line);
}