:root {
  --bg: #0b1220;
  --bg-deep: #08101c;
  --panel: rgba(14, 22, 36, 0.82);
  --panel-soft: rgba(17, 27, 43, 0.72);
  --line: rgba(120, 170, 255, 0.14);
  --line-strong: rgba(120, 170, 255, 0.26);
  --text: #eef4ff;
  --text-soft: #9baec5;
  --accent: #50e3c2;
  --accent-strong: #2d8cff;
  --shadow: 0 28px 80px rgba(2, 8, 18, 0.42);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 18% 18%, rgba(80, 227, 194, 0.14), transparent 24%),
    radial-gradient(circle at 82% 16%, rgba(45, 140, 255, 0.16), transparent 28%),
    linear-gradient(135deg, var(--bg-deep) 0%, #0f1726 52%, #0b1220 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, rgba(255, 255, 255, 0.3), transparent 88%);
}

.page-shell {
  width: min(1180px, calc(100vw - 40px));
  margin: 0 auto;
  padding: 22px 0 28px;
}

.site-header {
  display: flex;
  align-items: center;
  min-height: 56px;
  margin-bottom: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.brand-icon {
  display: inline-flex;
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
}

.brand-icon svg {
  display: block;
  width: 100%;
  height: 100%;
}

.brand-copy {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
}

.brand-mark {
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.28em;
}

.brand-name {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.landing-main {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 20px;
  align-items: stretch;
  padding: 28px;
  min-height: 420px;
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, rgba(13, 20, 33, 0.92), rgba(11, 18, 32, 0.86));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-copy,
.hero-visual {
  min-width: 0;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 4px 0;
}

.hero-kicker {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.24em;
}

.hero h1 {
  margin: 0;
  max-width: 12ch;
  font-size: clamp(34px, 4.4vw, 52px);
  line-height: 1.02;
  letter-spacing: -0.05em;
  font-weight: 700;
}

.hero-lead {
  margin: 18px 0 0;
  max-width: 34rem;
  color: var(--text-soft);
  font-size: 16px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.cta:hover,
.entry-card:hover {
  transform: translateY(-1px);
}

.cta-primary {
  color: #08101c;
  background: linear-gradient(135deg, var(--accent), #7cf0d8);
  box-shadow: 0 18px 40px rgba(80, 227, 194, 0.22);
}

.cta-secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line-strong);
}

.hero-visual {
  display: grid;
  gap: 16px;
  align-content: center;
}

.entry-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 22px;
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  background: linear-gradient(180deg, rgba(17, 27, 43, 0.82), rgba(13, 21, 34, 0.92));
  border: 1px solid var(--line);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.22);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.entry-card:hover {
  border-color: rgba(80, 227, 194, 0.28);
}

.entry-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.entry-badge,
.entry-name,
.signal-card span {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.entry-badge {
  color: var(--accent);
}

.entry-name,
.signal-card span {
  color: var(--text-soft);
}

.entry-card strong {
  font-size: 28px;
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.entry-card p,
.signal-card p,
.footer-left p,
.footer-right span,
.footer-right a,
.footer-center a {
  margin: 0;
  color: var(--text-soft);
  font-size: 14px;
  line-height: 1.8;
}

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

.signal-card,
.site-footer {
  border-radius: var(--radius-lg);
  background: var(--panel-soft);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.signal-card {
  padding: 24px;
}

.signal-card h2 {
  margin: 10px 0 10px;
  font-size: 28px;
  line-height: 1.06;
  letter-spacing: -0.04em;
}

.site-footer {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) auto auto;
  gap: 18px;
  align-items: center;
  margin-top: 18px;
  padding: 18px 22px;
}

.footer-title {
  display: block;
  margin-bottom: 6px;
  font-size: 16px;
  font-weight: 700;
}

.footer-center,
.footer-right {
  display: flex;
  align-items: center;
  gap: 18px;
}

.footer-center a,
.footer-right a {
  text-decoration: none;
}

.footer-center a:hover,
.footer-right a:hover {
  color: var(--text);
}

@media (max-width: 920px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .signal-grid,
  .site-footer {
    grid-template-columns: 1fr;
  }

  .footer-center,
  .footer-right {
    flex-wrap: wrap;
    gap: 12px;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100vw - 24px, 1180px);
    padding-top: 16px;
  }

  .site-header {
    margin-bottom: 14px;
  }

  .hero {
    padding: 20px;
    gap: 16px;
  }

  .hero h1 {
    font-size: clamp(30px, 9vw, 40px);
  }

  .hero-lead {
    font-size: 15px;
  }

  .entry-card,
  .signal-card {
    padding: 18px;
  }

  .entry-card strong,
  .signal-card h2 {
    font-size: 24px;
  }
}