* {
  box-sizing: border-box;
}

:root {
  --bg: #f8f6f1;
  --bg-soft: #f3f0e8;
  --surface: rgba(255, 255, 255, 0.9);
  --surface-2: rgba(255, 255, 255, 0.75);
  --border: rgba(60, 78, 43, 0.1);
  --text: #1d2319;
  --muted: #5f6658;
  --green: #53b21c;
  --green-deep: #3f7e1e;
  --shadow: 0 18px 60px rgba(26, 35, 18, 0.08);
  --radius-xl: 34px;
  --radius-lg: 26px;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(83, 178, 28, 0.08), transparent 24%),
    radial-gradient(circle at bottom right, rgba(83, 178, 28, 0.05), transparent 22%),
    linear-gradient(180deg, #fbfaf6 0%, var(--bg) 100%);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.page {
  padding: 22px 14px 40px;
}

.shell {
  max-width: 980px;
  margin: 0 auto;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  overflow: hidden;
  position: relative;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.38), transparent 36%),
    linear-gradient(180deg, transparent, rgba(255,255,255,0.14));
}

.inner {
  position: relative;
  z-index: 1;
  padding: 52px 42px 42px;
}

.hero {
  text-align: center;
  padding-bottom: 34px;
}

.hero-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 138px;
  height: 138px;
  margin-bottom: 26px;
  border-radius: 34px;
  background: linear-gradient(180deg, rgba(83, 178, 28, 0.1), rgba(83, 178, 28, 0.03));
  border: 1px solid rgba(83, 178, 28, 0.12);
  overflow: hidden;
}

.hero-logo img {
  width: 106px;
  height: auto;
  display: block;
}

h1 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.5rem, 5vw, 4.2rem);
  line-height: 1;
  letter-spacing: -0.045em;
  font-weight: 600;
  color: #1d2319;
}

.claim {
  margin: 18px auto 0;
  max-width: 650px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.18rem, 2.3vw, 1.7rem);
  line-height: 1.4;
  color: #2d3428;
}

.intro {
  margin: 28px auto 0;
  max-width: 760px;
  font-size: 1.05rem;
  line-height: 1.95;
  color: var(--muted);
}

.content {
  display: grid;
  gap: 18px;
}

.section {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px 28px;
}

.section-label {
  margin: 0 0 10px 0;
  color: var(--green-deep);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section h2 {
  margin: 0 0 14px 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.5rem, 2vw, 2.2rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: #20261c;
}

.section p {
  margin: 0;
  color: #3e443a;
  font-size: 1rem;
  line-height: 1.9;
}

.contact {
  text-align: center;
  padding: 34px 28px;
}

.contact p {
  max-width: 620px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.85;
}

.email {
  display: inline-block;
  margin-top: 16px;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.04rem;
  border-bottom: 1px solid rgba(83, 178, 28, 0.35);
  padding-bottom: 2px;
  word-break: break-word;
}

.email:hover {
  color: var(--green-deep);
  border-bottom-color: var(--green-deep);
}

footer {
  padding: 28px 0 2px;
  text-align: center;
  color: #76806d;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-bottom: 12px;
  border-radius: 16px;
  background: rgba(83, 178, 28, 0.08);
  border: 1px solid rgba(83, 178, 28, 0.12);
  overflow: hidden;
}

.footer-logo img {
  width: 42px;
  height: auto;
  display: block;
}

.footer-text {
  font-size: 0.92rem;
  line-height: 1.6;
}

@media (max-width: 720px) {
  .inner {
    padding: 34px 20px 28px;
  }

  .hero {
    padding-bottom: 26px;
  }

  .hero-logo {
    width: 112px;
    height: 112px;
    margin-bottom: 20px;
    border-radius: 28px;
  }

  .hero-logo img {
    width: 86px;
  }

  .intro,
  .section p,
  .contact p,
  .email {
    font-size: 0.98rem;
  }

  .section,
  .contact {
    padding: 24px 20px;
  }
  }
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 26px;
}

.header-brand {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.98rem;
  letter-spacing: 0.01em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 18px;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.site-nav a:hover {
  color: var(--green-deep);
}

.featured-book-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 28px;
  align-items: center;
}

.featured-book-cover img {
  width: 100%;
  max-width: 280px;
  height: auto;
  display: block;
  border-radius: 18px;
  box-shadow: 0 14px 30px rgba(26, 35, 18, 0.10);
}

.featured-book-content p + p {
  margin-top: 14px;
}

.button-link {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 18px;
  border-radius: 999px;
  background: rgba(83, 178, 28, 0.10);
  border: 1px solid rgba(83, 178, 28, 0.18);
  color: var(--green-deep);
  text-decoration: none;
  font-weight: 600;
}

.button-link:hover {
  background: rgba(83, 178, 28, 0.16);
}

@media (max-width: 720px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .site-nav {
    gap: 14px;
    flex-wrap: wrap;
  }

  .featured-book-grid {
    grid-template-columns: 1fr;
  }

  .featured-book-cover img {
    max-width: 220px;
  }
}
.featured-book-page {
  padding-top: 36px;
}

.page-title {
  margin: 0 0 14px 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
  font-weight: 600;
  color: #1d2319;
}

.book-lead {
  margin: 0;
  max-width: 640px;
  font-size: 1.06rem;
  line-height: 1.9;
  color: var(--muted);
}