@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap");

:root {
  --paper: #fbf7f1;
  --paper-strong: #ffffff;
  --ink: #1b1f24;
  --muted: #5b6471;
  --accent: #e36a3d;
  --accent-soft: #f7d2c3;
  --stroke: rgba(27, 31, 36, 0.12);
  --shadow: 0 16px 32px rgba(27, 31, 36, 0.12);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  color: var(--ink);
  line-height: 1.5;
  background-color: #2c2e30;
  background-image:
    radial-gradient(
      circle at 30% 20%,
      rgba(255, 255, 255, 0.05) 0%,
      transparent 50%
    ),
    linear-gradient(
      145deg,
      rgba(255, 255, 255, 0.03) 0%,
      rgba(0, 0, 0, 0.1) 100%
    );
  background-size:
    cover,
    4px 4px;
}

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

.book {
  background: var(--paper-strong);
  width: min(1120px, 100% - 10vw);
  margin: 38px auto 70px;
  margin-bottom: 0;
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
}

h1,
h2,
h3,
h4 {
  line-height: 1.2;
}

h1 {
  font-size: clamp(1.8rem, 2.8vw, 2.35rem);
  margin-bottom: 12px;
}

h2 {
  font-size: clamp(1.28rem, 2.2vw, 1.56rem);
  margin-bottom: 10px;
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.44rem);
  margin-bottom: 10px;
}

h4 {
  font-size: 0.98rem;
  margin-bottom: 8px;
}

p {
  color: var(--muted);
}

.hero,
.section,
.cta {
  padding: 24px 26px;
}

.card-container {
  display: flex;
  align-items: flex-start;
  gap: 1.4rem;
  margin-top: 10px;
}

.card {
  flex: 1;
  background: rgba(245, 247, 250, 0.4);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(0, 0, 0, 0.05);
  outline: 1px solid rgba(255, 255, 255, 0.8);
  outline-offset: -2px;
  box-shadow:
    0 4px 6px -1px rgba(0, 0, 0, 0.05),
    0 20px 25px -5px rgba(0, 0, 0, 0.08),
    inset 0 0 15px rgba(255, 255, 255, 0.5);
  border-radius: 16px;
  padding: 24px;
}

.button {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  transition: transform 0.15s ease;
}

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

.button.ghost {
  background: transparent;
  color: var(--accent);
}

.section-list {
  padding-left: 18px;
  color: var(--muted);
}

.section-list li + li {
  margin-top: 6px;
}

.cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.footer.page {
  background: #1a2133;
  color: #ecf2f5;
  padding: 80px 8vw 40px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  min-height: auto;
  font-family: "Inter", sans-serif;
  position: relative;
  z-index: 3;
}

.footer-brand .footer-logo {
  width: 48px;
  margin-bottom: 24px;
}

.footer-brand p {
  color: #94a3b8;
  max-width: 320px;
  line-height: 1.6;
  font-size: 0.95rem;
}

.footer-heading {
  font-size: 1.2rem;
  margin-bottom: 24px;
  color: #fff;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-nav a {
  color: #94a3b8;
  transition: color 0.2s;
  font-size: 0.95rem;
}

.footer-nav a:hover {
  color: var(--accent);
}

.footer-bottom {
  grid-column: 1 / -1;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 40px;
  margin-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: #64748b;
}

@media (max-width: 980px) {
  .menu-item > a {
    font-size: 1.2rem;
  }

  .book {
    width: min(1120px, 100% - 6vw);
  }

  .card-container {
    flex-wrap: wrap;
    gap: 1rem;
  }

  .card {
    min-width: min(320px, 100%);
  }
}

@media (max-width: 760px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding: 8px 18px;
  }

  .main-nav {
    flex-wrap: wrap;
    row-gap: 2px;
  }

  .menu-item:hover .submenu {
    position: static;
    margin-top: 6px;
    width: min(280px, 85vw);
  }

  .hero,
  .section,
  .cta {
    padding: 18px;
  }

  .footer.page {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 60px 8vw 30px;
  }
}