@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --bg: #f8fafc;
  --panel: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --line: #e5e7eb;
  --brand: #0269c7;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
  background: linear-gradient(180deg, #f8fafc 0%, #ffffff 65%, #f0f7ff 100%);
  color: var(--text);
}

.page-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
  background: rgba(255, 255, 255, 0.9);
}

.topbar-inner {
  max-width: 980px;
  margin: 0 auto;
  height: 64px;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-wrap {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.brand-logo {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  object-fit: cover;
}

.brand {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.brand-sol {
  color: #f97316;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* brand inline icon removed */

.back-nav {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  transition: color .2s ease;
}

.back-nav:hover { color: var(--text); }

.main-wrap {
  width: 100%;
  max-width: 980px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.05);
}

h1 {
  margin: 0 0 12px;
  font-size: 34px;
  letter-spacing: -0.02em;
}

h2 {
  margin: 18px 0 8px;
  font-size: 20px;
}

p,
li,
small {
  color: #334155;
  font-size: 14px;
  line-height: 1.75;
}

small { color: var(--muted); }

ol { margin: 0; padding-left: 20px; }
li { margin: 10px 0; }

.footer {
  margin-top: 20px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

.footer a {
  color: #475569;
  text-decoration: none;
}

.footer a:hover { color: var(--brand); }

.timeline-item {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.timeline-item:last-child { border-bottom: 0; }

.phase {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-weight: 700;
}

.status {
  display: inline-block;
  margin-top: 8px;
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
}

.status.done { background: #ecfdf3; color: #0f766e; border: 1px solid #bbf7d0; }
.status.progress { background: #eff6ff; color: #1d4ed8; border: 1px solid #bfdbfe; }
.status.future { background: #f5f3ff; color: #6d28d9; border: 1px solid #ddd6fe; }

@media (max-width: 760px) {
  h1 { font-size: 28px; }
  .timeline-item { grid-template-columns: 1fr; gap: 8px; }
}