*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg:       #0a0a0a;
  --surface:  #141414;
  --border:   #222;
  --accent:   #00c8b4;
  --text:     #f0f0f0;
  --muted:    #555;
  --font:     system-ui, -apple-system, sans-serif;
}

html, body {
  height: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.5;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ── Header ── */
header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 0;
}

.header-clock {
  margin-left: auto;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 16px;
  text-decoration: none;
  color: inherit;
}

.logo {
  height: 28px;
  display: block;
}

.header-label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  padding-left: 16px;
  border-left: 1px solid var(--border);
}

/* ── Main ── */
main {
  flex: 1;
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
  padding: 48px 24px;
}

/* ── Grid ── */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

/* ── Card ── */
.card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  padding: 32px;
  text-decoration: none;
  color: inherit;
  transition: background 0.15s;
  min-height: 240px;
}

.card:hover {
  background: #1c1c1c;
}

.card:hover .card-cta {
  color: var(--accent);
}

.card-icon {
  width: 48px;
  height: 48px;
  color: var(--accent);
  margin-bottom: 20px;
}

.card-icon svg {
  width: 100%;
  height: 100%;
}

.card-body {
  flex: 1;
}

.card-body h2 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: 0.01em;
}

.card-body p {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
}

.card-cta {
  display: block;
  margin-top: 24px;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.04em;
  transition: color 0.15s;
}

/* ── Footer ── */
footer {
  border-top: 1px solid var(--border);
  padding: 20px 24px;
  text-align: center;
  font-size: 12px;
  color: var(--muted);
}

footer a {
  color: var(--muted);
  text-decoration: none;
}

footer a:hover {
  color: var(--accent);
}