:root {
  color-scheme: light;
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-strong: #f1f5f9;
  --text: #0f172a;
  --muted: #475569;
  --primary: #1e3a8a;
  --primary-2: #0f766e;
  --accent: #d97706;
  --accent-strong: #b45309;
  --border: rgba(15, 23, 42, 0.12);
  --shadow-soft: 0 18px 60px rgba(15, 23, 42, 0.12);
  --shadow-strong: 0 30px 80px rgba(15, 23, 42, 0.18);
  --grid-line: rgba(15, 23, 42, 0.05);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 32px;
  --space-8: 40px;
  --space-9: 56px;
  --space-10: 72px;
  --max-width: 1200px;
  --font-display: 'Sora', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
}

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

body {
  margin: 0;
  background:
    radial-gradient(circle at 12% 20%, rgba(30, 58, 138, 0.15), transparent 40%),
    radial-gradient(circle at 86% 10%, rgba(15, 118, 110, 0.16), transparent 38%),
    radial-gradient(circle at 50% 90%, rgba(217, 119, 6, 0.14), transparent 42%),
    linear-gradient(120deg, rgba(15, 23, 42, 0.04), transparent 60%),
    repeating-linear-gradient(90deg, var(--grid-line) 0 1px, transparent 1px 160px),
    repeating-linear-gradient(0deg, var(--grid-line) 0 1px, transparent 1px 120px),
    var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

button,
input,
select,
textarea {
  font-family: inherit;
  color: inherit;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--primary-2);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.2);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  margin: 0;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

p {
  margin: 0;
  color: var(--muted);
  text-wrap: pretty;
}

.shell {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-7);
}

.skip-link {
  position: absolute;
  left: var(--space-6);
  top: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  transform: translateY(-140%);
  transition: transform 200ms ease;
  z-index: 20;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  padding: var(--space-4) 0;
  backdrop-filter: blur(12px);
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.92), rgba(248, 250, 252, 0));
}

.nav-shell {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-soft);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: 0.02em;
}

.brand-mark {
  display: inline-block;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: url("assets/company-gpt-mark.svg") center / contain no-repeat;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.18);
}

.nav-links {
  display: flex;
  gap: var(--space-5);
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
}

.nav-links a {
  padding: var(--space-2) var(--space-3);
  border-radius: 999px;
  transition: color 200ms ease, background 200ms ease;
}

.nav-links a:hover {
  color: var(--text);
  background: rgba(15, 23, 42, 0.06);
}

.nav-actions {
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 12px 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: transform 200ms ease, box-shadow 200ms ease, background 200ms ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #ffffff;
  box-shadow: 0 18px 40px rgba(180, 83, 9, 0.28);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 20px 50px rgba(180, 83, 9, 0.35);
}

.btn-secondary {
  background: rgba(15, 118, 110, 0.08);
  color: var(--text);
  border: 1px solid rgba(15, 118, 110, 0.2);
}

.btn-secondary:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 30px rgba(15, 118, 110, 0.2);
}

.hero {
  margin-top: var(--space-4);
  padding: var(--space-9) 0 var(--space-8);
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.6), rgba(248, 250, 252, 0.3));
  border-radius: var(--radius-lg);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-8);
  align-items: center;
}

.hero-copy h1 {
  font-size: clamp(32px, 4vw, 54px);
  line-height: 1.1;
  color: var(--text);
}

.lede {
  font-size: 18px;
  max-width: 52ch;
}

.hero-actions {
  display: flex;
  gap: var(--space-3);
  margin: var(--space-6) 0 var(--space-4);
  flex-wrap: wrap;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: var(--space-3);
}

.hero-badges {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.badge {
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(30, 58, 138, 0.08);
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
  border: 1px solid rgba(30, 58, 138, 0.16);
}

.hero-visual {
  display: grid;
  gap: var(--space-4);
  position: relative;
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: -10% -10% auto auto;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(30, 58, 138, 0.25), transparent 60%);
  z-index: 0;
}

.glass-card,
.stack-card,
.signal-card {
  position: relative;
  z-index: 1;
  padding: var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid rgba(15, 23, 42, 0.12);
  background: rgba(255, 255, 255, 0.85);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(8px);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
}

.pill {
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(30, 58, 138, 0.1);
  font-size: 12px;
  font-weight: 600;
}

.status {
  color: var(--primary-2);
  font-weight: 700;
  font-size: 12px;
}

.card-body {
  margin-top: var(--space-4);
}

.card-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.card-value {
  margin-top: var(--space-2);
  color: var(--text);
  font-weight: 600;
}

.card-row {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-top: var(--space-4);
}

.card-chip {
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(15, 118, 110, 0.08);
  border: 1px solid rgba(15, 118, 110, 0.16);
  font-size: 12px;
  color: var(--text);
}

.card-list {
  margin: var(--space-3) 0 0;
  padding-left: 18px;
  color: var(--muted);
  display: grid;
  gap: var(--space-2);
}

.signal-grid {
  margin-top: var(--space-3);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
}

.signal-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}

.signal-label {
  font-size: 12px;
  color: var(--muted);
}

.logo-cloud {
  margin: var(--space-8) 0;
}

.logo-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--space-5);
  text-align: center;
  font-weight: 600;
  color: rgba(15, 23, 42, 0.55);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 12px;
}

.section {
  padding: var(--space-9) 0;
}

.section-head {
  display: grid;
  gap: var(--space-3);
  max-width: 680px;
}

.metric-grid {
  margin-top: var(--space-6);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
}

.metric-card {
  padding: var(--space-5);
  border-radius: var(--radius-md);
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
}

.metric-card h3 {
  font-size: 32px;
  margin-bottom: var(--space-2);
}

.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-8);
  align-items: start;
}

.icon-list {
  margin-top: var(--space-6);
  display: grid;
  gap: var(--space-4);
}

.icon-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3);
  align-items: start;
}

.icon-item svg {
  width: 32px;
  height: 32px;
  color: var(--primary);
}

.icon-item h4 {
  margin: 0 0 var(--space-1);
  font-size: 16px;
}

.split-cards {
  display: grid;
  gap: var(--space-4);
}

.step-card {
  padding: var(--space-5);
  border-radius: var(--radius-md);
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
}

.step-index {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--primary-2);
  font-weight: 700;
}

.role-tabs {
  margin-top: var(--space-6);
  display: inline-flex;
  gap: var(--space-2);
  padding: 6px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.04);
  border: 1px solid var(--border);
}

.tab {
  padding: 10px 20px;
  border-radius: 999px;
  border: none;
  background: transparent;
  font-weight: 600;
  cursor: pointer;
  color: var(--muted);
  transition: background 200ms ease, color 200ms ease;
}

.tab.is-active {
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow-soft);
}

.role-panels {
  margin-top: var(--space-6);
}

.role-panel {
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.role-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-5);
}

.feature-grid {
  margin-top: var(--space-6);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
}

.feature-card {
  padding: var(--space-5);
  border-radius: var(--radius-md);
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
  display: grid;
  gap: var(--space-3);
}

.feature-card svg {
  width: 32px;
  height: 32px;
  color: var(--primary-2);
}

.testimonial-grid {
  margin-top: var(--space-6);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-4);
}

.testimonial-card {
  padding: var(--space-6);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.96), rgba(248, 250, 252, 0.9));
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
}

.testimonial-card blockquote {
  margin: 0 0 var(--space-4);
  color: var(--text);
  font-weight: 500;
}

.testimonial-name {
  font-weight: 700;
  color: var(--text);
}

.testimonial-role {
  font-size: 13px;
}

.cta {
  margin: var(--space-9) var(--space-4) 0;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.12), rgba(15, 118, 110, 0.08));
  border: 1px solid rgba(15, 23, 42, 0.12);
  box-shadow: var(--shadow-strong);
}

.cta-shell {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-8);
  padding: var(--space-8);
}

.cta-copy h2 {
  font-size: clamp(28px, 3.2vw, 42px);
}

.cta-points {
  margin-top: var(--space-5);
  display: grid;
  gap: var(--space-2);
  color: var(--muted);
  font-weight: 600;
}

.cta-form {
  display: grid;
  gap: var(--space-3);
  background: rgba(255, 255, 255, 0.8);
  padding: var(--space-6);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.cta-form .btn {
  width: 100%;
}

.cta-form label {
  display: grid;
  gap: var(--space-2);
  font-weight: 600;
  color: var(--text);
}

.cta-form input,
.cta-form select {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(15, 23, 42, 0.14);
  font-family: var(--font-body);
  font-size: 14px;
}

.cta-form input:focus,
.cta-form select:focus {
  outline: none;
  border-color: var(--primary-2);
  box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.2);
}

.form-status {
  font-size: 13px;
  color: var(--text);
  font-weight: 600;
  opacity: 0;
  transition: opacity 200ms ease;
}

.form-status.visible {
  opacity: 1;
}

.form-note {
  font-size: 12px;
}

.footer {
  padding: var(--space-8) 0 var(--space-6);
  margin-top: var(--space-8);
  border-top: 1px solid var(--border);
}

.footer-shell {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-5);
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  gap: var(--space-4);
  font-weight: 600;
  color: var(--muted);
}

.footer-links a:hover {
  color: var(--text);
}

.footer-note {
  margin-top: var(--space-2);
  font-size: 14px;
}

.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 600ms ease, transform 600ms ease;
}

.revealed {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1080px) {
  .hero-grid,
  .split,
  .cta-shell {
    grid-template-columns: 1fr;
  }

  .hero::before {
    border-radius: 0;
  }

  .nav-shell {
    flex-direction: column;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 760px) {
  .shell {
    padding: 0 var(--space-4);
  }

  .nav-actions {
    width: 100%;
    justify-content: center;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .logo-row {
    letter-spacing: 0.04em;
  }

  .cta {
    margin: var(--space-8) var(--space-4) 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}