:root {
  font-family: "Open Sans", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #f4f4f5;
  background: #09090b;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  --surface: rgba(24, 24, 27, 0.86);
  --surface-soft: rgba(9, 9, 11, 0.66);
  --border: #27272a;
  --muted: #a1a1aa;
  --subtle: #71717a;
}

* { box-sizing: border-box; }

html { min-width: 320px; }

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top left, #27272a 0, #09090b 38%, #18181b 100%);
}

.page-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 30px;
}

.app-header,
.panel,
.maturation-panel {
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.app-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  border-radius: 28px;
}

.app-icon {
  width: 52px;
  height: 52px;
  flex: 0 0 52px;
  display: grid;
  place-items: center;
  border: 1px solid #3f3f46;
  border-radius: 18px;
  background: linear-gradient(145deg, #27272a, #09090b);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.32);
}

.app-icon svg {
  width: 27px;
  height: 27px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

h1, h2, p { margin: 0; }

h1 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.app-header p {
  margin-top: 5px;
  color: var(--muted);
  font-size: 0.9rem;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.summary-card {
  min-height: 108px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: rgba(9, 9, 11, 0.72);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.025);
}

.summary-card span {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.summary-card strong {
  font-size: clamp(1.45rem, 4vw, 2rem);
  letter-spacing: -0.035em;
}

.content-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
  align-items: start;
}

.panel,
.maturation-panel {
  overflow: hidden;
  border-radius: 28px;
}

.panel-heading {
  padding: 17px 18px;
  border-bottom: 1px solid var(--border);
  background: rgba(9, 9, 11, 0.34);
}

.panel-heading h2 {
  font-size: 1rem;
  letter-spacing: -0.01em;
}

.reference-list { padding: 7px; }

.reference-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 46px;
  padding: 10px 12px;
  border-radius: 14px;
}

.reference-row + .reference-row {
  border-top: 1px solid rgba(63, 63, 70, 0.55);
  border-radius: 0;
}

.reference-row span {
  min-width: 0;
  color: #d4d4d8;
  font-size: 0.92rem;
}

.reference-row strong {
  flex: 0 0 auto;
  color: #fafafa;
  font-size: 0.95rem;
  white-space: nowrap;
}

.maturation-panel { margin-top: 16px; }

.maturation-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 14px;
}

.maturation-card {
  padding: 17px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--surface-soft);
}

.eyebrow {
  display: block;
  margin-bottom: 10px;
  color: #e4e4e7;
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.maturation-card p {
  color: #a1a1aa;
  font-size: 0.9rem;
  line-height: 1.65;
}

.maturation-card strong,
.maturation-card b { color: #f4f4f5; }

footer {
  padding: 18px 8px 0;
  color: var(--subtle);
  font-size: 0.76rem;
  text-align: center;
}

@media (max-width: 860px) {
  .content-grid { grid-template-columns: 1fr 1fr; }
  .content-grid .panel:first-child { grid-row: span 2; }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100% - 20px, 1120px);
    padding: 10px 0 20px;
  }

  .app-header {
    gap: 12px;
    padding: 15px;
    border-radius: 22px;
  }

  .app-icon {
    width: 46px;
    height: 46px;
    flex-basis: 46px;
    border-radius: 15px;
  }

  .app-icon svg { width: 24px; height: 24px; }
  .app-header p { font-size: 0.78rem; line-height: 1.35; }

  .summary-grid {
    grid-template-columns: 1fr;
    gap: 9px;
    margin-top: 10px;
  }

  .summary-card {
    min-height: 0;
    flex-direction: row;
    align-items: center;
    gap: 12px;
    padding: 14px 15px;
    border-radius: 18px;
  }

  .summary-card span {
    font-size: 0.73rem;
    line-height: 1.3;
  }

  .summary-card strong {
    font-size: 1.25rem;
    text-align: right;
    white-space: nowrap;
  }

  .content-grid {
    grid-template-columns: 1fr;
    gap: 10px;
    margin-top: 10px;
  }

  .content-grid .panel:first-child { grid-row: auto; }

  .panel,
  .maturation-panel { border-radius: 22px; }

  .panel-heading { padding: 15px; }
  .reference-list { padding: 5px; }

  .reference-row {
    min-height: 44px;
    padding: 9px 10px;
  }

  .reference-row span,
  .reference-row strong { font-size: 0.88rem; }

  .maturation-panel { margin-top: 10px; }
  .maturation-grid { grid-template-columns: 1fr; padding: 10px; gap: 9px; }
  .maturation-card { padding: 15px; border-radius: 17px; }
  .maturation-card p { font-size: 0.86rem; line-height: 1.55; }
}

@media (max-width: 370px) {
  h1 { font-size: 1.3rem; }
  .app-header p { display: none; }
  .reference-row { gap: 10px; }
  .reference-row span { font-size: 0.82rem; }
  .reference-row strong { font-size: 0.84rem; }
}