:root {
  --primary-color: #3f6b3f;
  --primary-dark: #27452d;
  --secondary-color: #7a4b28;
  --secondary-dark: #4a2f1d;
  --accent-color: #c89555;
  --leaf-light: #dfead3;
  --maki-beige: #f4ead6;
  --text-primary: #2f2a20;
  --text-secondary: #554938;
  --text-light: #6d6251;
  --bg-primary: #fffaf0;
  --bg-secondary: #efe1c8;
  --bg-accent: #e6efdb;
  --border-light: rgba(88, 104, 57, 0.18);
  --border-primary: rgba(122, 75, 40, 0.28);
  --shadow-light: 0 2px 10px rgba(63, 43, 24, 0.07);
  --shadow-medium: 0 8px 26px rgba(63, 43, 24, 0.13);
  --shadow-heavy: 0 18px 48px rgba(39, 69, 45, 0.2);
  --border-radius-sm: 8px;
  --border-radius-md: 14px;
  --border-radius-lg: 22px;
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  padding: 20px;
  color: var(--text-primary);
  font-family: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", "Yu Gothic",
    "Meiryo", sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.satoyama-maki {
  background:
    radial-gradient(900px 620px at 8% 6%, rgba(90, 128, 75, 0.24), transparent 58%),
    radial-gradient(760px 520px at 92% 12%, rgba(200, 149, 85, 0.22), transparent 56%),
    radial-gradient(820px 560px at 70% 96%, rgba(122, 75, 40, 0.16), transparent 55%),
    linear-gradient(135deg, #f7f0df 0%, #e4ecd5 48%, #d4c1a2 100%);
  color: var(--text-primary);
}

body.satoyama-maki::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(
      90deg,
      rgba(74, 47, 29, 0.025) 0,
      rgba(74, 47, 29, 0.025) 1px,
      transparent 1px,
      transparent 9px
    ),
    repeating-linear-gradient(
      0deg,
      rgba(39, 69, 45, 0.024) 0,
      rgba(39, 69, 45, 0.024) 1px,
      transparent 1px,
      transparent 11px
    );
  mix-blend-mode: multiply;
}

.fade-in {
  animation: fadeIn 0.65s ease both;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.container {
  max-width: 900px;
  margin: 0 auto;
  background: rgba(255, 250, 240, 0.96);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-heavy);
  border: 1px solid rgba(122, 75, 40, 0.22);
  overflow: hidden;
  position: relative;
}

.container::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  background:
    linear-gradient(90deg, rgba(122, 75, 40, 0.06), transparent 18%, transparent 82%, rgba(63, 107, 63, 0.06)),
    repeating-linear-gradient(
      90deg,
      rgba(122, 75, 40, 0.025) 0,
      rgba(122, 75, 40, 0.025) 2px,
      transparent 2px,
      transparent 18px
    );
}

.header {
  position: relative;
  overflow: hidden;
  padding: 66px 40px 62px;
  text-align: center;
  color: #fff7df;
  background:
    radial-gradient(700px 360px at 80% 78%, rgba(200, 149, 85, 0.38), transparent 56%),
    radial-gradient(640px 380px at 14% 18%, rgba(126, 155, 89, 0.36), transparent 56%),
    linear-gradient(145deg, #27452d 0%, #3f6b3f 48%, #7a4b28 100%);
}

.header::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.28;
  background:
    repeating-linear-gradient(
      30deg,
      rgba(255, 248, 230, 0.18) 0,
      rgba(255, 248, 230, 0.18) 2px,
      transparent 2px,
      transparent 12px
    ),
    repeating-linear-gradient(
      -30deg,
      rgba(58, 34, 16, 0.18) 0,
      rgba(58, 34, 16, 0.18) 2px,
      transparent 2px,
      transparent 15px
    );
}

.header::after {
  content: "🪵";
  position: absolute;
  right: 30px;
  bottom: 18px;
  font-size: 5.2rem;
  line-height: 1;
  opacity: 0.16;
  transform: rotate(-10deg);
  pointer-events: none;
}

.app-title {
  position: relative;
  font-family: "Shippori Mincho", "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(2rem, 5.8vw, 3.3rem);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-shadow: 0 3px 14px rgba(0, 0, 0, 0.24);
}

.app-subtitle {
  position: relative;
  margin-top: 18px;
  font-size: clamp(0.95rem, 2.5vw, 1.15rem);
  letter-spacing: 0.18em;
  color: rgba(255, 247, 223, 0.9);
}

.content {
  padding: 50px;
  position: relative;
}

.section {
  margin-bottom: 50px;
}

.section:last-child {
  margin-bottom: 0;
}

.section-title {
  position: relative;
  margin-bottom: 26px;
  padding-left: 18px;
  color: var(--primary-dark);
  font-family: "Shippori Mincho", "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(1.35rem, 4vw, 1.8rem);
  font-weight: 600;
  letter-spacing: 0.08em;
  border-left: 6px solid var(--secondary-color);
}

.section-title::after {
  content: "";
  position: absolute;
  left: 18px;
  bottom: -10px;
  width: 110px;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

.app-info,
.recommendation-section,
.company-info,
.contact-info {
  position: relative;
  padding: 35px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-light);
  background:
    linear-gradient(135deg, rgba(255, 252, 242, 0.96), rgba(244, 234, 214, 0.88)),
    repeating-linear-gradient(
      90deg,
      rgba(122, 75, 40, 0.04) 0,
      rgba(122, 75, 40, 0.04) 1px,
      transparent 1px,
      transparent 14px
    );
}

.app-info {
  margin-bottom: 32px;
  border-top: 4px solid var(--primary-color);
}

.app-info::after,
.company-info::after,
.recommendation-section::after {
  content: "";
  position: absolute;
  right: 18px;
  top: 18px;
  width: 92px;
  height: 92px;
  opacity: 0.08;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 35%, var(--secondary-color) 0 18%, transparent 19%),
    radial-gradient(circle at 50% 65%, var(--primary-color) 0 14%, transparent 15%);
}

.app-info p,
.recommendation-section p {
  margin-bottom: 16px;
  color: var(--text-secondary);
  line-height: 2;
}

.app-info p:last-child,
.recommendation-section p:last-child {
  margin-bottom: 0;
}

.description-content h4 {
  margin-top: 28px;
  margin-bottom: 10px;
  padding-left: 15px;
  color: var(--secondary-dark);
  font-family: "Shippori Mincho", "Yu Mincho", serif;
  font-size: 1.12rem;
  border-left: 4px solid var(--accent-color);
}

.description-content p {
  color: var(--text-secondary);
}

.content h3 {
  margin: 30px 0 14px;
  color: var(--primary-dark);
  font-family: "Shippori Mincho", "Yu Mincho", serif;
  font-size: 1.28rem;
  letter-spacing: 0.05em;
}

.features-list {
  list-style: none;
  margin-top: 18px;
  padding: 0;
}

.features-list li {
  position: relative;
  margin: 8px 0;
  padding: 12px 14px 12px 48px;
  color: var(--text-secondary);
  line-height: 1.75;
  border-radius: var(--border-radius-sm);
  border: 1px solid transparent;
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.features-list li::before {
  content: "🍂";
  position: absolute;
  left: 14px;
  top: 12px;
  font-size: 1.15rem;
}

.features-list li:nth-child(2n)::before {
  content: "🪵";
}

.features-list li:hover {
  transform: translateX(4px);
  background: rgba(223, 234, 211, 0.62);
  border-color: rgba(63, 107, 63, 0.2);
}

.recommendation-section {
  margin-top: 30px;
  border-left: 5px solid var(--accent-color);
  background:
    linear-gradient(135deg, rgba(239, 246, 230, 0.92), rgba(255, 250, 240, 0.94));
}

.company-info,
.contact-info {
  border-top: 4px solid var(--secondary-color);
  background:
    linear-gradient(135deg, rgba(248, 241, 226, 0.96), rgba(230, 239, 219, 0.9));
}

.company-info h3,
.contact-info h3 {
  margin-top: 0;
  margin-bottom: 18px;
  color: var(--primary-dark);
  font-family: "Shippori Mincho", "Yu Mincho", serif;
}

.company-details {
  line-height: 1.95;
}

.company-details p {
  margin: 8px 0;
  color: var(--text-secondary);
}

.company-details strong {
  color: var(--secondary-dark);
}

/* ============================
   Global Notice (Reusable)
   ============================ */

:root {
  --notice-bg: #f1e2c7;
  --notice-border: rgba(122, 75, 40, 0.28);
  --notice-title: #4a2f1d;
  --notice-text: #4f4638;
  --notice-shadow: 0 10px 25px rgba(63, 43, 24, 0.09);
}

.site-notice {
  width: 100%;
  margin: 28px 0 0;
  padding: 0 16px 28px;
}

.site-notice__inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 15px 18px;
  border-radius: 14px;
  border: 1px solid var(--notice-border);
  background:
    linear-gradient(135deg, rgba(241, 226, 199, 0.96), rgba(230, 239, 219, 0.92));
  box-shadow: var(--notice-shadow);
}

.site-notice__title {
  margin: 0 0 8px;
  color: var(--notice-title);
  font-size: 16px;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.site-notice__text {
  margin: 0;
  color: var(--notice-text);
  font-size: 14px;
  line-height: 1.7;
  word-break: break-word;
}

@media (max-width: 768px) {
  body {
    padding: 10px;
  }

  .content {
    padding: 30px;
  }

  .header {
    padding: 48px 24px;
  }

  .app-title {
    letter-spacing: 0.06em;
  }

  .app-subtitle {
    letter-spacing: 0.1em;
  }

  .app-info,
  .recommendation-section,
  .company-info,
  .contact-info {
    padding: 25px 20px;
  }

  .features-list li {
    padding-left: 42px;
  }
}

@media (max-width: 480px) {
  .content {
    padding: 22px 18px;
  }

  .header {
    padding: 42px 20px;
  }

  .site-notice {
    padding: 0 12px 22px;
  }

  .site-notice__inner {
    padding: 12px 14px;
    border-radius: 12px;
  }

  .site-notice__title {
    font-size: 15px;
  }

  .site-notice__text {
    font-size: 13.5px;
  }
}