:root {
  --bg: #f7f1e7;
  --bg-deep: #e8dcc8;
  --paper: rgba(255, 249, 241, 0.84);
  --paper-strong: #fffdf8;
  --text: #423127;
  --muted: #78614f;
  --line: rgba(66, 49, 39, 0.12);
  --accent: #b75f2c;
  --accent-soft: rgba(183, 95, 44, 0.12);
  --shadow: 0 24px 44px rgba(116, 82, 48, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 214, 153, 0.28), transparent 30%),
    radial-gradient(circle at 88% 10%, rgba(111, 168, 220, 0.18), transparent 28%),
    linear-gradient(180deg, #fbf6ef 0%, var(--bg) 100%);
  font-family: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
  line-height: 1.7;
}

a {
  color: inherit;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.site-frame {
  width: min(1140px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 40px;
}

.site-header,
.intro-panel,
.paper-card,
.tips-card,
.site-footer {
  border: 1px solid var(--line);
  border-radius: 26px;
  background: var(--paper);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

.site-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  padding: 26px 28px;
}

.site-mark,
.section-mark {
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.record-link {
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--paper-strong);
  text-decoration: none;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
}

.intro-panel {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 22px;
  margin-top: 22px;
  padding: 32px;
}

.lead {
  margin-bottom: 16px;
  font-size: 1.14rem;
  color: var(--text);
}

.body-copy {
  max-width: 42rem;
  color: var(--muted);
}

.route-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  align-content: start;
}

.route-chip {
  padding: 16px 18px;
  border-radius: 18px;
  background:
    linear-gradient(135deg, rgba(183, 95, 44, 0.11), rgba(255, 219, 173, 0.34)),
    var(--paper-strong);
  border: 1px solid rgba(183, 95, 44, 0.08);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 22px;
}

.photo-card {
  position: relative;
  overflow: hidden;
  min-height: 340px;
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.photo-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(0, 0, 0, 0.08), rgba(39, 28, 20, 0.62)),
    linear-gradient(135deg, rgba(255, 255, 255, 0.16), transparent 55%);
}

.photo-a {
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 238, 201, 0.9), transparent 24%),
    linear-gradient(180deg, #8fb7dd 0 36%, #c6a57f 36% 56%, #6f875c 56% 100%);
}

.photo-b {
  background:
    radial-gradient(circle at 70% 16%, rgba(255, 248, 213, 0.82), transparent 18%),
    linear-gradient(180deg, #87a8d8 0 28%, #8aa27c 28% 54%, #5b6f4f 54% 100%);
}

.photo-c {
  background:
    radial-gradient(circle at 72% 18%, rgba(255, 224, 190, 0.72), transparent 18%),
    linear-gradient(180deg, #f0b27a 0 24%, #d97b5b 24% 46%, #6e87a7 46% 100%);
}

.photo-copy {
  position: absolute;
  inset: auto 0 0;
  padding: 24px;
  color: #fff7ef;
  z-index: 1;
}

.photo-copy .section-mark {
  color: rgba(255, 247, 239, 0.76);
}

.content-grid,
.tips-panel {
  display: grid;
  gap: 18px;
  margin-top: 22px;
}

.content-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.tips-panel {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.paper-card,
.tips-card {
  padding: 26px;
}

.paper-card p:last-child,
.tips-card p:last-child {
  margin-bottom: 0;
  color: var(--muted);
}

.site-footer {
  margin-top: 24px;
  padding: 22px 26px;
  text-align: center;
}

.site-footer p:last-child {
  margin-bottom: 0;
}

.site-footer a {
  color: var(--accent);
  text-decoration: none;
}

@media (max-width: 980px) {
  .intro-panel,
  .gallery-grid,
  .content-grid,
  .tips-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .site-frame {
    width: min(100% - 20px, 1140px);
    padding-top: 14px;
  }

  .site-header,
  .intro-panel,
  .paper-card,
  .tips-card,
  .site-footer,
  .photo-card {
    border-radius: 20px;
  }

  .site-header {
    flex-direction: column;
  }

  .site-header,
  .intro-panel,
  .paper-card,
  .tips-card,
  .site-footer {
    padding: 22px;
  }

  h1 {
    font-size: 2.4rem;
  }
}