:root {
  --bg: #f4efe4;
  --panel: rgba(255,255,255,0.72);
  --line: rgba(15, 23, 42, 0.1);
  --text: #172033;
  --muted: #5b6578;
  --accent: #1344e0;
  --accent-2: #0d9488;
  --danger: #b91c1c;
  --shadow: 0 24px 60px rgba(17, 24, 39, 0.12);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 16px;
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at top left, rgba(19,68,224,0.18), transparent 32%),
    radial-gradient(circle at top right, rgba(13,148,136,0.18), transparent 30%),
    linear-gradient(180deg, #fbf8f1 0%, #f4efe4 100%);
  color: var(--text);
  font-family: "SF Pro Display", "Segoe UI", Inter, system-ui, sans-serif;
}
body { padding: 18px; }
.app-shell {
  max-width: 1240px;
  margin: 0 auto;
  padding-bottom: 120px;
}
.hero {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 18px;
  margin-bottom: 18px;
}
.hero-copy, .hero-card, .catalog-panel, .detail-card, .empty-state, .mode-card, .sticky-bar {
  background: var(--panel);
  border: 1px solid var(--line);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}
.hero-copy {
  padding: 28px;
  border-radius: var(--radius-xl);
}
.hero-copy h1 {
  margin: 16px 0 12px;
  font-size: clamp(34px, 4vw, 56px);
  line-height: 0.98;
}
.hero-copy p { margin: 0; max-width: 680px; color: var(--muted); font-size: 18px; }
.hero-card {
  border-radius: var(--radius-xl);
  padding: 22px;
  display: grid;
  gap: 14px;
  align-content: center;
}
.hero-stat {
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: rgba(15, 23, 42, 0.04);
}
.hero-stat strong { display: block; font-size: 30px; }
.hero-stat span { color: var(--muted); }
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: rgba(19,68,224,0.1);
  color: var(--accent);
}
.pill.soft { background: rgba(13,148,136,0.12); color: var(--accent-2); }
.pill.soft.red { background: rgba(185,28,28,0.1); color: var(--danger); }
.layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 18px;
  align-items: start;
}
.catalog-panel {
  border-radius: var(--radius-xl);
  padding: 22px;
}
.section-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}
.section-head h2 { margin: 0; font-size: 30px; }
.section-head p { margin: 6px 0 0; color: var(--muted); }
.ghost-button, .primary-button, .launch-button {
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.18s ease, opacity 0.18s ease, background 0.18s ease;
}
.ghost-button {
  padding: 12px 16px;
  background: rgba(15,23,42,0.06);
  color: var(--text);
}
.ghost-button:hover, .primary-button:hover, .launch-button:hover { transform: translateY(-1px); }
.category-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.category-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(15,23,42,0.08);
  background: rgba(255,255,255,0.76);
  cursor: pointer;
  text-align: left;
  padding: 0;
}
.category-card.active {
  outline: 2px solid rgba(19,68,224,0.28);
  transform: translateY(-1px);
}
.category-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}
.category-card-body {
  padding: 16px;
}
.category-card h3 { margin: 0 0 8px; font-size: 22px; }
.category-card p { margin: 0; color: var(--muted); line-height: 1.45; }
.detail-card, .empty-state {
  border-radius: var(--radius-xl);
  overflow: hidden;
}
.detail-card.hidden, .empty-state.hidden { display: none; }
.empty-state.active { display: grid; gap: 18px; padding: 28px; min-height: 520px; align-content: center; }
.empty-illustration {
  width: 100%;
  height: 220px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(19,68,224,0.18), rgba(13,148,136,0.18)),
    repeating-linear-gradient(-45deg, rgba(15,23,42,0.05), rgba(15,23,42,0.05) 14px, transparent 14px, transparent 28px);
}
.detail-image { width: 100%; height: 240px; object-fit: cover; display: block; }
.detail-body { padding: 22px; }
.detail-badge {
  display: inline-flex;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(15,23,42,0.06);
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.detail-body h3 { margin: 16px 0 10px; font-size: 32px; line-height: 1; }
.detail-description { color: var(--muted); margin: 0 0 14px; }
.example-list { display: grid; gap: 10px; margin-bottom: 18px; }
.example-item {
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(15,23,42,0.045);
  color: var(--text);
}
.product-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 12px;
}
.product-card {
  display: grid;
  gap: 8px;
  padding: 14px;
  border-radius: 16px;
  border: 1px solid rgba(15,23,42,0.08);
  background: rgba(255,255,255,0.78);
  cursor: pointer;
}
.product-card.active { outline: 2px solid rgba(19,68,224,0.25); }
.product-card strong { font-size: 16px; }
.product-card span { color: var(--muted); font-size: 14px; }
.modes-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 18px;
}
.mode-card {
  padding: 22px;
  border-radius: var(--radius-xl);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: end;
}
.mode-card h3 { margin: 14px 0 10px; font-size: 24px; }
.mode-card p { margin: 0; color: var(--muted); line-height: 1.5; }
.primary-button {
  padding: 14px 18px;
  background: var(--accent-2);
  color: #fff;
  font-weight: 700;
  min-width: 180px;
}
.primary-button.dark { background: var(--danger); }
.sticky-bar {
  position: fixed;
  left: 18px;
  right: 18px;
  bottom: 18px;
  max-width: 1240px;
  margin: 0 auto;
  padding: 16px 18px;
  border-radius: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.sticky-copy { display: grid; gap: 4px; }
.sticky-label { color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: 0.05em; }
.launch-button {
  padding: 16px 22px;
  min-width: 240px;
  background: var(--accent);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
}
.launch-button:disabled {
  cursor: not-allowed;
  opacity: 0.42;
  transform: none;
}
@media (max-width: 980px) {
  .hero, .layout, .modes-panel { grid-template-columns: 1fr; }
  .sticky-bar {
    left: 12px;
    right: 12px;
    flex-direction: column;
    align-items: stretch;
  }
  .launch-button { width: 100%; }
}
@media (max-width: 680px) {
  body { padding: 12px; }
  .category-grid, .product-grid { grid-template-columns: 1fr; }
  .hero-copy, .hero-card, .catalog-panel, .detail-body, .mode-card { padding: 18px; }
  .detail-image { height: 190px; }
}