:root {
  --navy: #14385c;
  --navy-dark: #0d2740;
  --amber: #f2a900;
  --text: #16212b;
  --muted: #4d5b67;
  --bg: #ffffff;
  --bg-alt: #f3f5f7;
  --border: #d9e0e6;
  --radius: 12px;
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
  -webkit-text-size-adjust: 100%;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
}

a {
  color: var(--navy);
}

.wrap {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  color: var(--navy);
  text-decoration: none;
  white-space: nowrap;
}

nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-link {
  color: var(--muted);
  font-weight: 600;
  text-decoration: none;
}

.nav-link:hover {
  color: var(--navy);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border-radius: 10px;
  background: var(--navy);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}

.btn:hover {
  background: var(--navy-dark);
}

.btn-outline {
  background: #fff;
  color: var(--navy);
  border: 2px solid var(--navy);
}

.btn-outline:hover {
  background: #e8f1fa;
}

.btn-small {
  min-height: 40px;
  padding: 0 18px;
}

a:focus-visible,
.btn:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 2px;
}

/* Hero */
.hero {
  padding: 88px 0 64px;
  background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 100%);
}

.hero h1 {
  max-width: 720px;
  margin: 0 0 18px;
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--navy);
}

.lead {
  max-width: 640px;
  margin: 0 0 32px;
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 20px;
}

.note {
  margin: 16px 0 0;
  color: var(--muted);
  font-weight: 600;
}

/* Benefits */
.benefits {
  padding: 8px 0 64px;
}

.grid-3 {
  display: grid;
  gap: 20px;
}

.card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
}

.card h2 {
  margin: 12px 0 8px;
  font-size: 1.15rem;
}

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

.icon {
  width: 36px;
  height: 36px;
  padding: 6px;
  border-radius: 10px;
  background: #e8f1fa;
  fill: none;
  stroke: var(--navy);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Sections */
.section {
  padding: 72px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-title {
  margin: 0 0 32px;
  font-size: clamp(1.6rem, 3.5vw, 2.1rem);
  color: var(--navy);
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 24px;
}

.steps li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.step-num {
  flex: none;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--navy);
  color: #fff;
  font-weight: 800;
}

.steps h3,
.feature h3 {
  margin: 4px 0 6px;
  font-size: 1.1rem;
}

.steps p,
.feature p {
  margin: 0;
  color: var(--muted);
}

.grid-2 {
  display: grid;
  gap: 28px 40px;
}

.feature {
  padding-left: 16px;
  border-left: 3px solid var(--amber);
}

/* Invite */
.invite-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 32px;
  border-radius: var(--radius);
  background: var(--navy);
  color: #fff;
}

.invite h2 {
  margin: 0 0 6px;
  font-size: 1.4rem;
}

.invite p {
  margin: 0;
  color: #d6e2ee;
}

.invite .btn {
  background: #fff;
  color: var(--navy);
}

.invite .btn:hover {
  background: #e8f1fa;
}

.invite-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.invite .btn-ghost {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.7);
}

.invite .btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
}

.footer-links {
  display: inline-flex;
  gap: 20px;
}

/* Footer */
.site-footer {
  padding: 28px 0;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.95rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
}

@media (min-width: 760px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

  .steps li {
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  .nav-link {
    display: none;
  }

  .hero {
    padding: 56px 0 44px;
  }

  .invite-inner {
    padding: 24px;
  }
}