style.css

:root {
  --bg: #060b16;
  --bg-soft: #0a1222;
  --card: rgba(15, 25, 46, 0.86);
  --card-strong: rgba(22, 35, 65, 0.94);
  --card-border: rgba(148, 163, 184, 0.18);
  --text: #eef4ff;
  --muted: #a9b7d4;
  --primary: #5eead4;
  --primary-strong: #2dd4bf;
  --accent: #818cf8;
  --danger: #f472b6;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.38);
  --radius-xl: 26px;
  --radius-lg: 18px;
  --radius-md: 12px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(45, 212, 191, 0.16), transparent 30%),
    radial-gradient(circle at top right, rgba(129, 140, 248, 0.22), transparent 32%),
    linear-gradient(180deg, #06101f 0%, #050814 100%);
}

body {
  padding: 30px 18px 46px;
}

.page {
  width: min(var(--max-width), 100%);
  margin: 0 auto;
}

.card {
  background:
    linear-gradient(180deg, rgba(20, 32, 58, 0.92), rgba(9, 17, 32, 0.92));
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.hero {
  padding: clamp(28px, 5vw, 56px);
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -2px;
  background:
    radial-gradient(circle at 20% 20%, rgba(94, 234, 212, 0.18), transparent 28%),
    radial-gradient(circle at 85% 15%, rgba(129, 140, 248, 0.24), transparent 24%);
  pointer-events: none;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.eyebrow,
.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 13px;
  border-radius: 999px;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.eyebrow {
  color: #dbeafe;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.10);
}

.status-pill {
  color: #022c22;
  background: linear-gradient(90deg, var(--primary), #a7f3d0);
  font-weight: 800;
}

h1 {
  margin: 0;
  max-width: 900px;
  font-size: clamp(2.25rem, 6vw, 4.7rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.hero-subtitle {
  margin: 20px 0 24px;
  max-width: 930px;
  color: #dce8ff;
  font-size: clamp(1.04rem, 2vw, 1.28rem);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 14px;
  text-decoration: none;
  font-weight: 750;
  transition: 0.18s ease;
  border: 1px solid transparent;
}

.btn-primary {
  color: #04231f;
  background: linear-gradient(90deg, var(--primary), #a7f3d0);
}

.btn-primary:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

.btn-secondary {
  color: white;
  background: rgba(129, 140, 248, 0.18);
  border-color: rgba(129, 140, 248, 0.35);
}

.btn-secondary:hover {
  background: rgba(129, 140, 248, 0.26);
}

.btn-ghost {
  color: #e5e7eb;
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.10);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.11);
}

.boundary-badges,
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.boundary-badges span,
.chip {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  color: #dbeafe;
  background: rgba(255, 255, 255, 0.065);
  border: 1px solid rgba(255, 255, 255, 0.10);
  font-size: 0.92rem;
}

.grid {
  display: grid;
  gap: 18px;
  margin-bottom: 18px;
}

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

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

.grid .card,
.validation-card,
.principle-card,
.footer-card,
.card:not(.hero) {
  padding: 24px;
}

.stats {
  margin-bottom: 18px;
}

.stat-card {
  background:
    linear-gradient(180deg, rgba(21, 35, 65, 0.95), rgba(10, 18, 34, 0.92));
}

.stat-label {
  margin: 0 0 10px;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  font-weight: 800;
}

h2 {
  margin: 0 0 14px;
  font-size: clamp(1.22rem, 2vw, 1.55rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h3 {
  margin: 0 0 12px;
  font-size: 1.03rem;
  color: #f8fafc;
}

p {
  color: #d7e3fb;
  line-height: 1.65;
}

.section-lead {
  margin: 0 0 14px;
  color: #eaf1ff;
}

ul {
  margin: 0;
  padding-left: 20px;
}

li {
  margin: 0 0 10px;
  color: #d7e3fb;
  line-height: 1.58;
}

.muted {
  color: var(--muted);
}

.strong-line {
  margin-top: 16px;
}

.section-header {
  margin-bottom: 16px;
}

.validation-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.validation-grid > div {
  padding: 18px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

th,
td {
  padding: 15px 16px;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  vertical-align: top;
  color: #dce7ff;
}

th {
  color: #f8fafc;
  background: rgba(255, 255, 255, 0.075);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

td:first-child {
  font-weight: 750;
  color: #ffffff;
  min-width: 220px;
}

tr:last-child td {
  border-bottom: none;
}

.principle-card {
  margin-bottom: 18px;
  background:
    linear-gradient(135deg, rgba(45, 212, 191, 0.10), rgba(129, 140, 248, 0.10)),
    linear-gradient(180deg, rgba(21, 35, 65, 0.95), rgba(10, 18, 34, 0.92));
}

blockquote {
  margin: 18px 0 0;
  padding: 18px 20px;
  color: #ecfeff;
  border-left: 4px solid var(--primary);
  background: rgba(94, 234, 212, 0.08);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  line-height: 1.65;
  font-weight: 750;
}

.footer-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-links a {
  color: #ccfbf1;
  text-decoration: none;
  font-weight: 700;
  border: 1px solid rgba(94, 234, 212, 0.22);
  border-radius: 999px;
  padding: 9px 12px;
  background: rgba(94, 234, 212, 0.06);
}

.footer-links a:hover {
  background: rgba(94, 234, 212, 0.12);
}

@media (max-width: 860px) {
  body {
    padding: 18px 12px 34px;
  }

  .grid.two,
  .grid.three,
  .validation-grid {
    grid-template-columns: 1fr;
  }

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

  td:first-child {
    min-width: 170px;
  }
}