:root {
  --bg: #090b0e;
  --bg-soft: #10141a;
  --panel: #131820;
  --line: #2a313b;
  --text: #f3f5f7;
  --muted: #a7b0bc;
  --silver: #d6dbe1;
  --accent: #66e3c4;
  --accent-dark: #102d28;
  --max-width: 1180px;
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 82% 5%, rgba(102, 227, 196, 0.10), transparent 26rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

a {
  color: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.container {
  width: min(calc(100% - 40px), var(--max-width));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 999;
  padding: 10px 14px;
  background: var(--text);
  color: var(--bg);
  border-radius: 8px;
}

.skip-link:focus {
  top: 16px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  background: rgba(9, 11, 14, 0.82);
  backdrop-filter: blur(16px);
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  color: var(--accent);
  font-size: 12px;
  border-radius: 50%;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
}

.menu-button {
  display: none;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  padding: 8px 12px;
  border-radius: 8px;
}

.hero {
  min-height: 78vh;
  display: grid;
  align-items: center;
  padding: 96px 0 80px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  align-items: end;
  gap: 70px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 12px;
  font-weight: 700;
}

h1,
h2,
h3,
p {
  text-wrap: pretty;
}

h1 {
  max-width: 900px;
  margin: 0;
  color: var(--silver);
  font-size: clamp(48px, 7.8vw, 96px);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.hero-text {
  max-width: 720px;
  margin: 30px 0 0;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
}

.button-primary {
  background: var(--accent);
  color: #07100e;
}

.button-primary:hover,
.button-primary:focus-visible {
  filter: brightness(1.08);
}

.button-secondary {
  border-color: var(--line);
  background: rgba(255,255,255,0.02);
  color: var(--text);
}

.hero-panel {
  padding: 28px;
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
  border-radius: var(--radius);
}

.panel-label {
  margin: 0;
  color: var(--silver);
  font-weight: 700;
}

.hero-panel ul {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
}

.hero-panel li {
  padding: 12px 0;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.section {
  padding: 112px 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 48px;
}

.section-heading h2,
.audit-grid h2,
.connect-grid h2 {
  margin: 0;
  color: var(--silver);
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.section-heading > p:last-child {
  max-width: 660px;
  color: var(--muted);
  font-size: 18px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.card,
.resource-card {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: var(--radius);
}

.card {
  min-height: 260px;
  padding: 28px;
}

.card-number {
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
}

.card h3,
.resource-card h3 {
  margin: 56px 0 12px;
  font-size: 24px;
}

.card p,
.resource-card p {
  margin: 0;
  color: var(--muted);
}

.section-accent {
  background: var(--bg-soft);
  border-block: 1px solid rgba(255,255,255,0.07);
}

.audit-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 80px;
}

.audit-content > p {
  margin-top: 0;
  color: var(--muted);
  font-size: 20px;
}

.check-list {
  margin: 30px 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  padding: 14px 0 14px 32px;
  border-top: 1px solid var(--line);
  position: relative;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 4px;
  color: var(--accent);
  font-weight: 800;
}

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

.resource-card {
  min-height: 310px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease;
}

.resource-card:hover,
.resource-card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.resource-card > span {
  color: var(--accent);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.resource-card h3 {
  margin-top: 50px;
}

.resource-card strong {
  margin-top: auto;
  color: var(--silver);
  font-size: 14px;
}

.connect-section {
  border-top: 1px solid rgba(255,255,255,0.07);
}

.connect-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}

.social-links {
  display: grid;
}

.social-links a {
  display: flex;
  justify-content: space-between;
  padding: 18px 4px;
  border-bottom: 1px solid var(--line);
  color: var(--silver);
  text-decoration: none;
  font-size: 20px;
}

.social-links a:hover,
.social-links a:focus-visible {
  color: var(--accent);
}

.site-footer {
  padding: 28px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
}

.footer-inner p {
  margin: 0;
}

.footer-inner div {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-inner a {
  text-decoration: none;
}

.notice {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 50;
  max-width: 340px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  background: #161c23;
  color: var(--silver);
  border-radius: 10px;
  box-shadow: 0 18px 50px rgba(0,0,0,0.35);
  font-size: 14px;
}

@media (max-width: 900px) {
  .hero-grid,
  .audit-grid,
  .connect-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

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

  .hero {
    min-height: auto;
  }
}

@media (max-width: 680px) {
  .container {
    width: min(calc(100% - 28px), var(--max-width));
  }

  .menu-button {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    left: 14px;
    right: 14px;
    top: 62px;
    padding: 14px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    border: 1px solid var(--line);
    background: #10141a;
    border-radius: 12px;
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 12px;
  }

  .hero {
    padding: 78px 0 64px;
  }

  h1 {
    font-size: clamp(44px, 14vw, 68px);
  }

  .section {
    padding: 80px 0;
  }

  .card-grid,
  .resource-grid {
    grid-template-columns: 1fr;
  }

  .card {
    min-height: 220px;
  }

  .resource-card {
    min-height: 260px;
  }

  .footer-inner {
    flex-direction: column;
  }
}