:root {
  --bg: #f5f2eb;
  --bg-soft: #fffdf8;
  --panel: rgba(255, 252, 246, 0.88);
  --panel-border: rgba(130, 113, 82, 0.18);
  --text: #1f2428;
  --muted: #736b61;
  --accent: #185c7a;
  --accent-2: #9d6a1f;
  --danger: #b74a36;
  --hero-copy: #4c4a46;
  --card-copy: #4f555b;
  --memo-text: #394146;
  --metric-bg: rgba(255, 255, 255, 0.76);
  --card-bg: rgba(255, 255, 255, 0.55);
  --card-border: rgba(130, 113, 82, 0.14);
  --shadow: 0 24px 60px rgba(94, 79, 49, 0.12);
  --bg-radial: rgba(207, 181, 125, 0.28);
  --bg-linear-top: #fbf7f0;
  --bg-linear-mid: #f5f2eb;
  --bg-linear-bottom: #efe8dc;
  --grid: rgba(145, 128, 100, 0.08);
}

:root[data-theme="dark"] {
  --bg: #09131b;
  --bg-soft: #112636;
  --panel: rgba(12, 24, 34, 0.82);
  --panel-border: rgba(141, 212, 255, 0.18);
  --text: #edf6fb;
  --muted: #8ba5b8;
  --accent: #9df0ff;
  --accent-2: #f6cf7c;
  --danger: #ff8c78;
  --hero-copy: #c3d5e1;
  --card-copy: #c6d6df;
  --memo-text: #dce9f0;
  --metric-bg: rgba(9, 19, 27, 0.65);
  --card-bg: rgba(255, 255, 255, 0.02);
  --card-border: rgba(157, 240, 255, 0.12);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.22);
  --bg-radial: rgba(43, 116, 166, 0.32);
  --bg-linear-top: #07111a;
  --bg-linear-mid: #09131b;
  --bg-linear-bottom: #081018;
  --grid: rgba(157, 240, 255, 0.05);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  background:
    radial-gradient(circle at top, var(--bg-radial), transparent 35%),
    linear-gradient(180deg, var(--bg-linear-top) 0%, var(--bg-linear-mid) 45%, var(--bg-linear-bottom) 100%);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background 220ms ease, color 220ms ease;
}

.background-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(circle at center, black 35%, transparent 85%);
  pointer-events: none;
}

.shell {
  width: calc(100vw - 32px);
  max-width: 1180px;
  margin: 0 auto;
  padding: 32px 0 60px;
  position: relative;
}

.topbar {
  position: fixed;
  top: 22px;
  right: 22px;
  z-index: 20;
}

.theme-toggle {
  border: 1px solid var(--panel-border);
  background: var(--panel);
  color: var(--text);
  border-radius: 999px;
  padding: 10px 16px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.hero {
  padding: 30px 0 20px;
}

.eyebrow,
.stamp {
  font-family: "IBM Plex Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  font-size: 12px;
}

.hero h1 {
  font-size: 72px;
  font-size: clamp(42px, 7vw, 82px);
  line-height: 0.96;
  margin: 10px 0 18px;
  max-width: 900px;
}

.hero-copy {
  max-width: 720px;
  color: var(--hero-copy);
  font-size: 18px;
  line-height: 1.6;
}

.hero-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.metric,
.chip {
  border: 1px solid var(--panel-border);
  background: var(--metric-bg);
  border-radius: 999px;
  padding: 10px 14px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
}

.panel {
  backdrop-filter: blur(16px);
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 24px;
  padding: 24px;
  margin-top: 20px;
  box-shadow: var(--shadow);
}

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

.latest-panel h2 {
  font-size: clamp(28px, 4vw, 44px);
  margin: 14px 0 24px;
  max-width: 980px;
}

.opportunity-grid,
.archive-list {
  display: grid;
  gap: 16px;
}

.opportunity-card,
.archive-card {
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  border-radius: 20px;
  padding: 18px;
}

.card-domain {
  color: var(--accent-2);
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  text-transform: uppercase;
}

.card-title {
  font-size: 20px;
  margin: 8px 0 10px;
}

.card-copy {
  color: var(--card-copy);
  line-height: 1.55;
}

.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.chip-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  color: var(--accent);
}

.memo-markdown {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: anywhere;
  line-height: 1.7;
  color: var(--memo-text);
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
}

.archive-card h3 {
  margin: 10px 0;
  font-size: 18px;
}

.archive-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

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

  .shell {
    width: calc(100vw - 18px);
    max-width: 1180px;
    padding-top: 72px;
  }

  .topbar {
    top: 14px;
    right: 14px;
  }

  .hero {
    padding-top: 8px;
  }

  .hero h1 {
    font-size: 48px;
    line-height: 1.02;
  }

  .hero-copy {
    font-size: 16px;
  }

  .stamp {
    width: 100%;
  }

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