:root {
  --ink: #132237;
  --muted: #4e617a;
  --paper: #f4f8ff;
  --card: #ffffff;
  --accent: #0f8f6f;
  --accent-strong: #0a755b;
  --accent-alt: #ff7a3d;
  --line: #d9e4f4;
  --shadow: 0 16px 36px rgba(19, 34, 55, 0.1);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Sora", "Segoe UI", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 10% 10%, #e9fff6 0%, transparent 40%),
    radial-gradient(circle at 90% 15%, #fff2e8 0%, transparent 35%),
    var(--paper);
  line-height: 1.55;
}

.bg-shape {
  position: fixed;
  z-index: -1;
  filter: blur(40px);
  opacity: 0.45;
}

.bg-shape-a {
  top: -80px;
  right: -60px;
  width: 260px;
  height: 260px;
  background: #8de0c9;
  border-radius: 50%;
}

.bg-shape-b {
  bottom: -90px;
  left: -80px;
  width: 300px;
  height: 300px;
  background: #ffc7a8;
  border-radius: 50%;
}

.wrap {
  width: min(1080px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
  background: rgba(244, 248, 255, 0.86);
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
}

.brand {
  text-decoration: none;
  color: var(--ink);
  font-weight: 800;
  letter-spacing: 0.2px;
}

.actions {
  display: flex;
  gap: 10px;
}

.btn {
  text-decoration: none;
  font-weight: 700;
  border-radius: 999px;
  padding: 10px 16px;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-main {
  background: linear-gradient(120deg, var(--accent), var(--accent-alt));
  color: #fff;
  box-shadow: var(--shadow);
}

.btn-soft {
  color: var(--ink);
  border: 1px solid var(--line);
  background: #fff;
}

.hero {
  padding: 64px 0 22px;
}

.eyebrow {
  margin: 0;
  color: var(--accent-strong);
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  font-weight: 700;
}

h1,
h2 {
  font-family: "Fraunces", Georgia, serif;
  line-height: 1.15;
  letter-spacing: 0.2px;
}

h1 {
  margin: 14px 0 14px;
  font-size: clamp(2rem, 4vw, 3.15rem);
}

.lead {
  max-width: 70ch;
  color: var(--muted);
  margin: 0;
}

.hero-cta {
  margin-top: 24px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  padding: 18px 0;
}

.card,
.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px;
  box-shadow: var(--shadow);
}

.card h2,
.panel h2 {
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 1.35rem;
}

.card p,
.panel p,
.panel li {
  color: var(--muted);
}

.panel {
  margin: 14px auto;
}

.panel ol,
.panel ul {
  margin-top: 0;
  padding-left: 20px;
}

.hint {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}

code {
  background: #edf3ff;
  border: 1px solid #dce8ff;
  border-radius: 6px;
  padding: 2px 6px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.92em;
}

.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.link {
  color: var(--accent-strong);
  text-decoration-thickness: 2px;
}

.site-footer {
  margin-top: 24px;
  border-top: 1px solid var(--line);
  background: #fff;
}

.footer-grid {
  padding: 16px 0 26px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  font-size: 0.9rem;
}

@media (max-width: 900px) {
  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 640px) {
  .site-header .wrap {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .cards,
  .split {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 36px;
  }
}