:root {
  --bg: #f6f7fb;
  --card: #ffffff;
  --text: #171923;
  --muted: #4a5568;
  --primary: #1f4b99;
  --ok: #1f9d55;
  --warn: #b45309;
  --danger: #b42318;
  --border: #d8dee9;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}
.hero {
  padding: 1rem 1rem 1.2rem;
  background: linear-gradient(155deg, #0f2c63, #1f4b99 55%, #2d6cdf);
  color: #fff;
}
.eyebrow { text-transform: uppercase; letter-spacing: .08em; opacity: .85; margin-bottom: .2rem; font-size: .8rem; }
h1 { margin: 0; font-size: 1.55rem; }
.subtitle { margin: .5rem 0 .9rem; max-width: 68ch; opacity: .95; }
.hero-meta { display: flex; flex-wrap: wrap; gap: .5rem; font-size: .9rem; }
.hero-meta span { background: rgba(255,255,255,.12); padding: .25rem .55rem; border-radius: .5rem; }
.tabs {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: .35rem;
  padding: .7rem;
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(246, 247, 251, 0.95);
  backdrop-filter: blur(4px);
}
.tab {
  border: 1px solid var(--border);
  background: #fff;
  padding: .45rem .25rem;
  border-radius: .6rem;
  font-weight: 600;
  font-size: .8rem;
}
.tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }
main { padding: .8rem; }
.panel { display: none; }
.panel.active { display: block; }
.grid {
  display: grid;
  gap: .8rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.stack { display: grid; gap: .8rem; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: .9rem;
  padding: .85rem;
}
h2 { margin-top: .2rem; }
h3 { margin: .1rem 0 .35rem; }
.big { font-size: 1.2rem; font-weight: 700; margin: 0; color: var(--primary); }
.checklist { list-style: none; padding: 0; margin: .4rem 0 0; display: grid; gap: .45rem; }
.checklist li { display: flex; align-items: center; gap: .45rem; }
.checklist input { transform: scale(1.2); }
.phase { border-left: .35rem solid var(--primary); }
.phase .meta { color: var(--muted); font-size: .92rem; margin-bottom: .35rem; }
.filters { display: flex; flex-wrap: wrap; gap: .7rem; margin-bottom: .8rem; }
.filters label { display: grid; gap: .35rem; font-size: .9rem; }
select {
  border: 1px solid var(--border);
  border-radius: .55rem;
  padding: .45rem;
  font-size: .95rem;
}
.product {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: .7rem;
  align-items: start;
}
.product img {
  width: 72px;
  height: 72px;
  border-radius: .6rem;
  object-fit: cover;
  border: 1px solid var(--border);
  background: #fff;
}
.badge {
  display: inline-block;
  margin: .2rem .35rem .2rem 0;
  font-size: .78rem;
  padding: .18rem .4rem;
  border-radius: .4rem;
  background: #eaf2ff;
  color: var(--primary);
}
.badge.best { background: #e8f8ee; color: var(--ok); }
.danger { border-color: #f5c2c7; background: #fff5f6; }
.guide-step { padding-left: 1.1rem; }
.guide-step li { margin-bottom: .35rem; }
footer { padding: 1rem; text-align: center; color: var(--muted); }
@media (max-width: 760px) {
  .tabs { grid-template-columns: repeat(2, 1fr); }
}