:root {
  color-scheme: dark;
  --bg-start: #07111f;
  --bg-end: #0f2742;
  --panel: rgba(8, 19, 36, 0.8);
  --panel-border: rgba(148, 163, 184, 0.15);
  --text-main: #f8fafc;
  --text-soft: #9fb0d6;
  --accent: #34d399;
  --shadow: 0 24px 70px rgba(3, 9, 20, 0.45);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text-main);
  background:
    radial-gradient(circle at top left, rgba(52, 211, 153, 0.16), transparent 28%),
    radial-gradient(circle at top right, rgba(37, 99, 235, 0.18), transparent 24%),
    linear-gradient(145deg, var(--bg-start), var(--bg-end));
}

.page-shell {
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 24px 0 48px;
}

.top-nav {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: 999px;
  text-decoration: none;
  color: var(--text-soft);
  background: rgba(8, 19, 36, 0.5);
  border: 1px solid rgba(148, 163, 184, 0.14);
}

.nav-link.active {
  color: #04111f;
  background: linear-gradient(135deg, var(--accent), #7dd3fc);
}

.hero-card,
.panel-card {
  background: var(--panel);
  backdrop-filter: blur(18px);
  border: 1px solid var(--panel-border);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.hero-card {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 24px;
  padding: 28px;
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 12px;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  font-size: clamp(30px, 4vw, 52px);
  margin-bottom: 12px;
}

.hero-copy,
.panel-header p {
  color: var(--text-soft);
  line-height: 1.7;
}

.stat-grid,
.quantile-grid {
  display: grid;
  gap: 16px;
}

.stat-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.stat-card,
.quantile-card {
  padding: 18px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(15, 39, 66, 0.9), rgba(7, 17, 31, 0.9));
  border: 1px solid rgba(148, 163, 184, 0.12);
}

.stat-card span,
.quantile-card span {
  display: block;
  color: var(--text-soft);
  margin-bottom: 12px;
}

.stat-card strong,
.quantile-card strong {
  font-size: 28px;
}

.panel-card {
  padding: 24px;
  margin-bottom: 24px;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  margin-bottom: 16px;
}

.panel-controls {
  align-items: flex-end;
}

.stock-form {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  flex-wrap: wrap;
}

.stock-input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 220px;
}

.stock-input-group span {
  color: var(--text-soft);
  font-size: 13px;
}

.stock-input-group input {
  height: 46px;
  padding: 0 14px;
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  outline: none;
  color: var(--text-main);
  background: rgba(7, 17, 31, 0.7);
  font-size: 16px;
}

.stock-input-group input:focus {
  border-color: rgba(52, 211, 153, 0.8);
  box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.12);
}

.period-toolbar {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-bottom: 12px;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  font-size: 14px;
  color: #04111f;
  background: linear-gradient(135deg, var(--accent), #7dd3fc);
  cursor: pointer;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

button:hover {
  transform: translateY(-1px);
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.chart {
  height: 560px;
}

.quantile-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

@media (max-width: 900px) {
  .hero-card {
    grid-template-columns: 1fr;
  }

  .stat-grid,
  .quantile-grid {
    grid-template-columns: 1fr;
  }

  .panel-header,
  .panel-controls,
  .period-toolbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .stock-form {
    width: 100%;
  }

  .stock-input-group {
    width: 100%;
  }

  .chart {
    height: 440px;
  }
}

.stock-input-group input,
.stock-input-group select {
  height: 46px;
  padding: 0 14px;
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  outline: none;
  color: var(--text-main);
  background: rgba(7, 17, 31, 0.7);
  font-size: 16px;
}

.stock-input-group input:focus,
.stock-input-group select:focus {
  border-color: rgba(52, 211, 153, 0.8);
  box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.12);
}

.valuation-hero {
  grid-template-columns: 1.35fr 0.85fr;
}

.valuation-summary-card {
  padding: 22px;
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(17, 47, 77, 0.92), rgba(8, 19, 36, 0.88));
  border: 1px solid rgba(125, 211, 252, 0.2);
}

.valuation-summary-card span {
  display: block;
  color: var(--text-soft);
  margin-bottom: 12px;
}

.valuation-summary-card strong {
  display: block;
  font-size: 30px;
  margin-bottom: 12px;
}

.valuation-summary-card p {
  color: var(--text-soft);
  line-height: 1.7;
  margin-bottom: 0;
}

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

.valuation-card {
  padding: 20px;
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(15, 39, 66, 0.92), rgba(7, 17, 31, 0.88));
  border: 1px solid rgba(148, 163, 184, 0.12);
}

.valuation-card-head h3 {
  margin-bottom: 10px;
}

.valuation-card-head p {
  color: var(--text-soft);
  line-height: 1.65;
  margin-bottom: 18px;
}

.valuation-form {
  display: grid;
  gap: 12px;
}

.valuation-result {
  margin-top: 16px;
  padding: 16px;
  border-radius: 16px;
  background: rgba(4, 17, 31, 0.62);
  border: 1px solid rgba(52, 211, 153, 0.14);
}

.valuation-result h4 {
  margin: 0 0 10px;
  font-size: 18px;
}

.valuation-result p {
  margin: 0 0 8px;
  color: var(--text-soft);
}

.valuation-result p:last-child {
  margin-bottom: 0;
}

.external-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px;
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(15, 39, 66, 0.92), rgba(7, 17, 31, 0.88));
  border: 1px solid rgba(148, 163, 184, 0.12);
}

.external-card p {
  color: var(--text-soft);
  margin-bottom: 0;
}

.external-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 180px;
  padding: 12px 18px;
  border-radius: 999px;
  text-decoration: none;
  color: #04111f;
  background: linear-gradient(135deg, var(--accent), #7dd3fc);
}

@media (max-width: 900px) {
  .valuation-hero,
  .valuation-grid {
    grid-template-columns: 1fr;
  }

  .external-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .external-link {
    width: 100%;
  }
}

.overview-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.metric-panel {
  padding-top: 20px;
}

.metric-panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 8px;
}

.metric-summary {
  color: var(--text-soft);
  margin-bottom: 0;
}

.metric-chart {
  height: 420px;
}

@media (max-width: 1100px) {
  .overview-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .overview-grid {
    grid-template-columns: 1fr;
  }

  .metric-chart {
    height: 360px;
  }
}