:root {
  color-scheme: light;
  --bg: #f6fbff;
  --surface: #ffffff;
  --ink: #172033;
  --muted: #64748b;
  --line: #d7e4f2;
  --blue: #2563eb;
  --blue-soft: #e5f0ff;
  --mint: #42c782;
  --mint-soft: #e7f8ee;
  --lime: #b6ec2f;
  --shadow: 0 20px 60px rgba(31, 74, 132, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  line-height: 1.65;
}

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

.site-header {
  align-items: center;
  background: rgba(246, 251, 255, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(215, 228, 242, 0.8);
  display: flex;
  justify-content: space-between;
  left: 0;
  padding: 16px clamp(20px, 5vw, 72px);
  position: sticky;
  right: 0;
  top: 0;
  z-index: 10;
}

.brand {
  align-items: center;
  color: var(--ink);
  display: inline-flex;
  font-size: 20px;
  font-weight: 900;
  gap: 10px;
  text-decoration: none;
}

.brand img {
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(69, 148, 57, 0.18);
}

.nav {
  align-items: center;
  display: flex;
  gap: 24px;
}

.nav a {
  color: #334155;
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
}

.hero {
  align-items: center;
  display: grid;
  gap: clamp(28px, 6vw, 70px);
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
  min-height: calc(100vh - 78px);
  padding: clamp(54px, 8vw, 96px) clamp(20px, 5vw, 72px);
}

.hero-copy {
  max-width: 720px;
}

.eyebrow,
.section-label {
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
  margin: 0 0 12px;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  font-size: clamp(42px, 7vw, 78px);
  line-height: 1.05;
  margin-bottom: 24px;
}

h2 {
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.15;
  margin-bottom: 18px;
}

h3 {
  font-size: 21px;
  line-height: 1.25;
  margin-bottom: 10px;
}

.lead {
  color: #40526a;
  font-size: clamp(17px, 2vw, 21px);
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.button {
  align-items: center;
  border-radius: 999px;
  display: inline-flex;
  font-weight: 900;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  text-decoration: none;
}

.button.primary {
  background: var(--blue);
  color: white;
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.25);
}

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

.notice {
  background: var(--blue-soft);
  border: 1px solid #bfd8ff;
  border-radius: 14px;
  color: #24456f;
  font-size: 14px;
  font-weight: 800;
  max-width: 640px;
  padding: 12px 14px;
}

.hero-visual {
  background:
    radial-gradient(circle at 32% 24%, rgba(255, 255, 255, 0.9), transparent 26%),
    linear-gradient(135deg, #dff5ff 0%, #eefcf4 54%, #f8ffe1 100%);
  border: 1px solid rgba(215, 228, 242, 0.9);
  border-radius: 28px;
  box-shadow: var(--shadow);
  overflow: hidden;
  padding: clamp(20px, 4vw, 42px);
}

.hero-visual img {
  display: block;
  height: auto;
  margin: 0 auto;
  max-width: min(100%, 520px);
}

.section,
.split-section,
.legal-page {
  padding: clamp(54px, 8vw, 96px) clamp(20px, 5vw, 72px);
}

.section > h2 {
  max-width: 760px;
}

.feature-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 34px;
}

.feature {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 30px rgba(31, 74, 132, 0.07);
  padding: 24px;
}

.feature-number {
  color: var(--mint);
  display: block;
  font-size: 14px;
  font-weight: 900;
  margin-bottom: 14px;
}

.feature p,
.split-section p,
.email-card p,
.compact-section p,
.legal-page p {
  color: var(--muted);
}

.split-section {
  align-items: center;
  background: var(--surface);
  display: grid;
  gap: 28px;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
}

.split-section p {
  font-size: clamp(17px, 2vw, 20px);
}

.email-section {
  padding-top: 72px;
}

.email-card {
  background: linear-gradient(135deg, var(--surface), #f8fff4);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  max-width: 960px;
  padding: clamp(28px, 5vw, 52px);
}

.check-list {
  display: grid;
  gap: 10px;
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

.check-list li {
  background: var(--mint-soft);
  border-radius: 8px;
  color: #1e5940;
  font-weight: 800;
  padding: 12px 14px;
}

.compact-section {
  max-width: 900px;
}

.site-footer {
  align-items: center;
  border-top: 1px solid var(--line);
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  padding: 28px 20px 42px;
}

.site-footer a {
  color: #334155;
  font-weight: 800;
  text-decoration: none;
}

.legal-page {
  margin: 0 auto;
  max-width: 920px;
}

.legal-page h1 {
  font-size: clamp(34px, 5vw, 56px);
}

.legal-page section {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  margin-top: 18px;
  padding: 24px;
}

.legal-updated {
  font-weight: 800;
}

@media (max-width: 960px) {
  .hero,
  .split-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

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

@media (max-width: 680px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .nav {
    gap: 14px;
    overflow-x: auto;
    width: 100%;
  }

  .nav a {
    flex: 0 0 auto;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }
}