:root {
  --primary: #1769e0;
  --accent: #15b88a;
  --ink: #152033;
  --muted: #64748b;
  --line: #dbe4f0;
  --soft: #f4f7fb;
  --shadow: 0 18px 55px rgba(21, 32, 51, 0.11);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  color: var(--ink);
  background: var(--soft);
  line-height: 1.65;
}

.shell {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(16px);
}

.header-inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 13px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #ffffff;
  font-weight: 900;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
}

.main-nav {
  display: flex;
  gap: 6px;
}

.main-nav a {
  padding: 10px 13px;
  border-radius: 9px;
  color: inherit;
  font-weight: 700;
  text-decoration: none;
}

.main-nav a:hover {
  background: var(--soft);
}

.main-nav .nav-cta {
  background: var(--primary);
  color: #ffffff;
}

.menu-toggle {
  display: none;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: #ffffff;
  font-weight: 800;
}

.hero {
  padding: 90px 0 62px;
  background: radial-gradient(
      circle at 80% 10%,
      rgba(21, 184, 138, 0.16),
      transparent 33%
    ),
    linear-gradient(#ffffff, var(--soft));
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.45fr 0.75fr;
  gap: 52px;
  align-items: center;
}

.eyebrow {
  color: var(--primary);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.13em;
}

.hero h1,
.page-hero h1 {
  margin: 12px 0 18px;
  font-size: clamp(38px, 6vw, 68px);
  line-height: 1.03;
  letter-spacing: -0.045em;
}

.hero-copy,
.page-hero p {
  color: var(--muted);
  font-size: 19px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 19px;
  border: 0;
  border-radius: 10px;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}

.button.primary {
  background: var(--primary);
  color: #ffffff;
}

.button.secondary {
  border: 1px solid var(--line);
  background: #ffffff;
  color: var(--ink);
}

.button.full {
  width: 100%;
}

.hero-card,
.feature,
.login-card,
.panel,
.content-card {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.hero-card,
.feature,
.panel,
.content-card {
  padding: 28px;
}

.section {
  padding: 72px 0;
}

.section-soft {
  background: #eaf0f8;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.login-grid {
  display: grid;
  grid-template-columns: 1fr 480px;
  gap: 54px;
  align-items: center;
}

.login-card {
  padding: 30px;
}

.login-card label {
  display: block;
  margin-bottom: 17px;
  font-weight: 800;
}

.login-card input {
  display: block;
  width: 100%;
  margin-top: 7px;
  padding: 13px;
  border: 1px solid #cbd5e1;
  border-radius: 9px;
}

.alert {
  margin-bottom: 16px;
  padding: 12px;
  border-radius: 9px;
  background: #fff0f0;
  color: #a61b1b;
}

.page-hero {
  padding: 74px 0 54px;
  background: linear-gradient(135deg, #ffffff, #edf4ff);
}

.dashboard-grid,
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.metric {
  color: var(--accent);
  font-size: 34px;
}

.site-footer {
  padding: 38px 0;
  background: #111b2e;
  color: #dbe5f5;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 30px;
}

@media (max-width: 820px) {
  .menu-toggle {
    display: block;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 68px;
    right: 20px;
    left: 20px;
    flex-direction: column;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #ffffff;
  }

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

  .hero-grid,
  .login-grid,
  .feature-grid,
  .dashboard-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    display: block;
  }
}