:root {
  --bg-a: #ffffff;
  --bg-b: #f7f5f1;
  --bg-c: #efede7;
  --text-main: #2a2a2a;
  --text-soft: #5b5b5b;
  --line: #e8e5de;
  --card: rgba(255, 255, 255, 0.3);
  --header-h: 88px;
  --radius: 18px;
  --shadow: 0 16px 34px rgba(30, 30, 30, 0.08);
}

* {
  box-sizing: border-box;
}

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

body {
  font-family: "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", serif;
  color: var(--text-main);
  background: linear-gradient(180deg, var(--bg-a) 0%, var(--bg-b) 52%, var(--bg-c) 100%);
  min-height: 100vh;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  padding: 10px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(7px);
  border-bottom: 1px solid var(--line);
}

.logo-link {
  display: inline-flex;
  width: 50%;
  max-width: 400px;
  min-width: 180px;
  margin-left: 4px;
}

.logo-link img {
  width: 100%;
  height: auto;
  display: block;
}

.menu-wrap {
  position: relative;
  margin-right: 4px;
}

.menu-btn {
  width: 46px;
  height: 40px;
  border: 1px solid #ddd8cf;
  background: #fff;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

.menu-btn span {
  width: 22px;
  height: 2px;
  background: #363636;
  border-radius: 2px;
}

.menu-panel {
  position: absolute;
  top: 52px;
  right: 0;
  width: 280px;
  max-width: calc(100vw - 24px);
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  border-radius: 14px;
  overflow: hidden;
  display: none;
}

.menu-panel.open {
  display: block;
}

.menu-panel a {
  display: block;
  padding: 12px 14px;
  color: var(--text-main);
  text-decoration: none;
  border-bottom: 1px solid #f0ece4;
  font-size: 15px;
  line-height: 1.45;
}

.menu-panel a:last-child {
  border-bottom: 0;
}

.menu-panel a:hover,
.menu-panel a:focus-visible {
  background: #faf9f6;
}

.page {
  padding-top: calc(var(--header-h) + 16px);
  padding-bottom: 28px;
}

.home-list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  padding: 10px 0 18px;
}

.home-block,
.sub-image-block {
  width: 100vw;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid #ede9e1;
  background: rgba(255, 255, 255, 0.3);
  opacity: 0.2;
  transform: translateY(80px);
  transition: transform 0.85s ease, opacity 0.85s ease;
}

.home-block img,
.sub-image-block img {
  width: 100%;
  height: auto;
  display: block;
}

.revealed {
  opacity: 1;
  transform: translateY(0);
}

.sub-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  padding: 10px 10px 20px;
}

.menu-text {
  width: 100vw;
  background: var(--card);
  border: 1px solid #eee9e0;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 16px;
}

.menu-title {
  margin: 0 0 14px;
  font-size: 20px;
  letter-spacing: 1px;
  font-weight: 600;
  border-bottom: 2px solid #e6e2d9;
  padding-bottom: 10px;
}

.menu-item {
  margin-bottom: 14px;
}

.menu-item:last-child {
  margin-bottom: 0;
}

.menu-item h2,
.menu-item h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
}

.menu-item p {
  margin: 0 0 6px;
  line-height: 1.8;
  color: var(--text-soft);
  font-size: 15px;
}

.menu-item a {
  color: #2f5f90;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.menu-item a:hover,
.menu-item a:focus-visible {
  color: #163e66;
}

.page-footer {
  text-align: center;
  color: #6a6a6a;
  font-size: 14px;
  padding: 18px 12px 26px;
}

@media (min-width: 768px) {
  .page {
    padding-top: calc(var(--header-h) + 24px);
  }

  .home-block {
    width: 75vw;
    max-width: 1080px;
  }

  .sub-image-block,
  .menu-text {
    width: 50vw;
    max-width: 860px;
  }

  .menu-text {
    padding: 26px 28px;
  }
}

@media (min-width: 1024px) and (orientation: landscape) {
  .menu-panel a {
    font-size: 19px;
  }

  .menu-title {
    font-size: 24px;
  }

  .menu-item h2,
  .menu-item h3 {
    font-size: 21px;
  }

  .menu-item p {
    font-size: 19px;
  }

  .page-footer {
    font-size: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .home-block,
  .sub-image-block {
    transition: none;
  }
}