/* Shadow Monitor — public site */
:root {
  --bg: #f7f4f1;
  --bg-2: #fffdfb;
  --ink: #1a1513;
  --muted: #6b635e;
  --line: #e6dfd8;
  --accent: #ee4a4f;
  --accent-ink: #fff;
  --card: #ffffff;
  --shadow: 0 18px 50px rgba(26, 21, 19, 0.08);
  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-body: "Sora", "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(900px 480px at 10% -10%, rgba(238, 74, 79, 0.14), transparent 55%),
    radial-gradient(700px 420px at 100% 0%, rgba(238, 74, 79, 0.06), transparent 50%),
    linear-gradient(180deg, var(--bg-2) 0%, var(--bg) 100%);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: #d63d42; }

.shell {
  width: min(980px, calc(100% - 2.5rem));
  margin: 0 auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 0 0.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--ink);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  font-size: 0.92rem;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--ink);
}

.hero {
  padding: 4.5rem 0 3.5rem;
  max-width: 40rem;
}

.hero h1 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.05;
}

.hero .lede {
  margin: 0 0 1.6rem;
  font-size: 1.12rem;
  color: var(--muted);
  max-width: 34rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.78rem 1.15rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
}

.btn-primary:hover { background: #d63d42; color: #fff; }

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.btn-ghost:hover { background: rgba(255,255,255,0.7); color: var(--ink); }

.section {
  padding: 0 0 3.5rem;
}

.section h2 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 1.55rem;
  letter-spacing: -0.02em;
}

.section p,
.section li {
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.25rem;
}

@media (max-width: 760px) {
  .grid { grid-template-columns: 1fr; }
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.25rem 1.3rem;
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
}

.card p {
  margin: 0;
  font-size: 0.94rem;
}

.page {
  padding: 2.5rem 0 4rem;
  max-width: 44rem;
}

.page h1 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.6rem);
  letter-spacing: -0.03em;
}

.meta {
  margin: 0 0 1.75rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.prose h2 {
  margin: 1.8rem 0 0.55rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.prose p,
.prose li { color: var(--ink); font-size: 0.98rem; }
.prose ul { padding-left: 1.2rem; }
.prose li { margin-bottom: 0.35rem; }
.prose code {
  font-size: 0.88em;
  background: rgba(26, 21, 19, 0.05);
  padding: 0.08em 0.35em;
  border-radius: 4px;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.35rem 1.4rem;
  box-shadow: var(--shadow);
}

.page-wide {
  max-width: 52rem;
}

.guide-toc {
  margin: 0 0 2rem;
  padding: 1rem 1.15rem 1rem 2rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.guide-toc li {
  margin-bottom: 0.35rem;
  color: var(--ink);
}

.guide-toc a {
  color: var(--ink);
  font-weight: 500;
  text-decoration: none;
}

.guide-toc a:hover { color: var(--accent); }

.guide-step {
  margin: 0 0 2.75rem;
  padding-top: 0.25rem;
}

.guide-step h2 {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-top: 0;
}

.step-n {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  flex-shrink: 0;
}

.guide-code {
  margin: 0.75rem 0 1rem;
  padding: 0.85rem 1rem;
  background: rgba(26, 21, 19, 0.05);
  border-radius: 10px;
  font-size: 0.95rem;
  overflow-x: auto;
}

.guide-fig {
  margin: 1.25rem 0 1.5rem;
  padding: 0;
}

.guide-fig img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  background: #fff;
}

.guide-fig figcaption {
  margin-top: 0.55rem;
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.4;
}

.guide-next {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.guide-step .btn {
  margin: 0.35rem 0 0.75rem;
}