:root {
  color-scheme: dark;
  --bg: #050712;
  --panel: rgba(12, 19, 39, 0.76);
  --panel-strong: rgba(18, 26, 52, 0.95);
  --line: rgba(131, 159, 255, 0.18);
  --text: #eef3ff;
  --muted: rgba(222, 230, 255, 0.72);
  --accent: #6ef7d8;
  --accent-2: #5fa7ff;
  --accent-3: #ff9f7f;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at top, rgba(95, 167, 255, 0.18), transparent 28%),
    radial-gradient(circle at 80% 20%, rgba(255, 159, 127, 0.16), transparent 24%),
    linear-gradient(180deg, #060816 0%, #050712 100%);
  color: var(--text);
}

a {
  color: inherit;
  text-decoration: none;
}

main {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto 64px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 18px 0;
  background: rgba(5, 7, 18, 0.78);
  backdrop-filter: blur(18px);
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.brand-mark {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  box-shadow: 0 0 18px rgba(110, 247, 216, 0.55);
}

.site-nav {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.site-nav a {
  padding: 10px 14px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--muted);
  transition: 160ms ease;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--text);
  border-color: rgba(110, 247, 216, 0.36);
  background: rgba(110, 247, 216, 0.08);
}

.hero {
  position: relative;
  overflow: hidden;
  margin-top: 18px;
  padding: 42px;
  border: 1px solid var(--line);
  border-radius: 40px;
  background:
    linear-gradient(135deg, rgba(14, 22, 46, 0.96), rgba(7, 11, 24, 0.98)),
    rgba(7, 11, 24, 0.94);
  box-shadow: var(--shadow);
}

.hero-orbit {
  position: absolute;
  border-radius: 999px;
  filter: blur(8px);
  opacity: 0.65;
}

.hero-orbit-a {
  top: -120px;
  right: -40px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(95, 167, 255, 0.4), transparent 64%);
}

.hero-orbit-b {
  left: -100px;
  bottom: -120px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(255, 159, 127, 0.22), transparent 62%);
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 28px;
}

.eyebrow {
  margin: 0 0 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(110, 247, 216, 0.92);
}

.hero h1,
.panel-head h2,
.coverage-section h2,
.method-card h2,
.contact-strip h2 {
  margin: 0;
  line-height: 1.06;
  letter-spacing: -0.04em;
}

.hero h1 {
  max-width: 11ch;
  font-size: clamp(40px, 7vw, 68px);
}

.hero-text,
.panel-note,
.coverage-card p {
  color: var(--muted);
}

.hero-text {
  max-width: 60ch;
  margin: 20px 0 0;
  font-size: 17px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.primary-link,
.secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
}

.primary-link {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #04111b;
}

.secondary-link {
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.03);
}

.hero-panel,
.metric-band,
.result-panel,
.coverage-section,
.method-grid,
.contact-strip,
.site-footer {
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-panel {
  align-self: stretch;
  padding: 22px;
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(14, 23, 47, 0.96), rgba(8, 13, 26, 0.96));
}

.hero-panel-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
  color: var(--muted);
  font-size: 13px;
}

.hero-panel-top strong {
  color: var(--text);
  font-size: 15px;
}

.hero-panel-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.hero-panel-metrics div,
.metric,
.coverage-card,
.method-card,
.result-card,
.candidate-grid article {
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
}

.hero-panel-metrics div {
  padding: 16px;
  border-radius: 18px;
}

.hero-panel-metrics span,
.metric span,
.coverage-card span,
.candidate-grid span,
.candidate-grid small {
  display: block;
  color: var(--muted);
}

.hero-panel-metrics strong,
.metric strong,
.coverage-card h3,
.candidate-grid strong {
  display: block;
  margin-top: 8px;
}

.hero-panel-metrics strong {
  font-size: 28px;
  letter-spacing: -0.03em;
}

.metric-band,
.result-panel,
.coverage-section,
.contact-strip {
  margin-top: 28px;
  padding: 28px;
  border-radius: 28px;
  background: var(--panel);
}

.metric-band {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.metric {
  padding: 18px;
  border-radius: 20px;
}

.metric strong {
  font-size: 28px;
  letter-spacing: -0.03em;
}

.panel-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 20px;
}

.panel-note {
  max-width: 34ch;
  margin: 0;
  text-align: right;
}

.results-grid,
.coverage-grid,
.candidate-grid {
  display: grid;
  gap: 18px;
}

.results-grid {
  grid-template-columns: 1.2fr 0.8fr;
}

.result-card {
  padding: 22px;
  border-radius: 22px;
}

.result-card-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.result-card-head span {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.result-card-head strong {
  font-size: 20px;
}

.result-svg {
  width: 100%;
  height: auto;
}

.result-grid-lines line {
  stroke: rgba(255, 255, 255, 0.1);
  stroke-width: 1;
}

.result-axis {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
}

.bar-group {
  display: grid;
  gap: 14px;
}

.bar-row {
  display: grid;
  grid-template-columns: 72px 1fr 60px;
  align-items: center;
  gap: 12px;
}

.bar-row span,
.bar-row strong {
  font-size: 14px;
}

.bar-row span,
.bar-row strong {
  color: var(--text);
}

.bar-row i {
  display: block;
  height: 12px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent-3), var(--accent-2));
}

.coverage-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.coverage-card {
  padding: 22px;
  border-radius: 22px;
}

.coverage-card span {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(110, 247, 216, 0.94);
}

.coverage-card h3 {
  margin: 12px 0 10px;
  font-size: 22px;
}

.coverage-card p {
  line-height: 1.7;
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 28px;
}

.method-card {
  padding: 28px;
  border-radius: 28px;
  background: var(--panel);
}

.volume-bars {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.volume-bars div,
.candidate-grid article {
  padding: 16px 18px;
  border-radius: 18px;
}

.volume-bars div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background:
    linear-gradient(90deg, rgba(95, 167, 255, 0.16), rgba(255, 159, 127, 0.08)),
    rgba(255, 255, 255, 0.03);
}

.volume-bars span {
  color: var(--muted);
}

.volume-bars strong {
  font-size: 28px;
  letter-spacing: -0.03em;
}

.candidate-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 24px;
}

.candidate-grid article {
  background: rgba(255, 255, 255, 0.03);
}

.candidate-grid strong {
  font-size: 22px;
}

.candidate-grid span {
  margin-top: 10px;
}

.candidate-grid small {
  margin-top: 8px;
}

.contact-strip {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto 36px;
  padding: 22px 24px;
  border-radius: 24px;
  background: var(--panel-strong);
}

.footer-brand p {
  margin: 8px 0 0;
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--muted);
}

@media (max-width: 1024px) {
  .hero-grid,
  .results-grid,
  .coverage-grid,
  .method-grid,
  .contact-strip {
    grid-template-columns: 1fr;
  }

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

  .panel-head,
  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .panel-note {
    max-width: none;
    text-align: left;
  }
}

@media (max-width: 720px) {
  main,
  .site-header,
  .site-footer {
    width: min(100% - 24px, 1180px);
  }

  .site-header,
  .site-footer {
    gap: 14px;
  }

  .hero,
  .metric-band,
  .result-panel,
  .coverage-section,
  .method-card,
  .contact-strip {
    padding: 22px;
    border-radius: 24px;
  }

  .hero h1 {
    max-width: none;
    font-size: 38px;
  }

  .metric-band,
  .candidate-grid {
    grid-template-columns: 1fr;
  }

  .hero-panel-metrics {
    grid-template-columns: 1fr;
  }

  .site-nav {
    justify-content: flex-start;
  }
}