* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: #2a2926;
  background: #f7f4ef;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

img {
  display: block;
  width: 100%;
  height: auto;
}

.hero {
  max-width: 760px;
  margin: 0 auto;
  padding: 28px 18px 18px;
}

.eyebrow {
  margin: 0 0 8px;
  color: #8c5d21;
  font-size: 15px;
  font-weight: 700;
}

h1 {
  margin: 0;
  font-size: clamp(28px, 8vw, 42px);
  line-height: 1.15;
  letter-spacing: 0;
}

.subtitle {
  margin: 14px 0 0;
  color: #6b665f;
  font-size: 16px;
}

.stage-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  max-width: 760px;
  margin: 0 auto;
  padding: 10px 12px;
  background: rgba(247, 244, 239, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #e4ddd2;
}

.stage-link {
  display: flex;
  min-height: 54px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  border: 1px solid #ded6ca;
  border-radius: 8px;
  color: #5a5147;
  background: #fffdfa;
  text-decoration: none;
}

.stage-link span {
  font-size: 15px;
  font-weight: 700;
}

.stage-link strong {
  color: #897c6d;
  font-size: 12px;
}

.stage-link.is-active {
  color: #ffffff;
  border-color: #8b5b22;
  background: #8b5b22;
}

.stage-link.is-active strong {
  color: rgba(255, 255, 255, 0.78);
}

.route {
  max-width: 760px;
  margin: 0 auto;
  padding: 18px 14px 10px;
}

.stage-section {
  scroll-margin-top: 88px;
  margin-bottom: 26px;
}

.stage-heading {
  padding: 18px 4px 10px;
}

.stage-heading p {
  margin: 0 0 4px;
  color: #8c5d21;
  font-weight: 700;
}

.stage-heading h2 {
  margin: 0;
  font-size: 22px;
  line-height: 1.25;
  letter-spacing: 0;
}

.route-card {
  overflow: hidden;
  margin: 0 0 16px;
  border: 1px solid #e3dbcf;
  border-radius: 8px;
  background: #fffdfa;
  box-shadow: 0 10px 28px rgba(58, 48, 35, 0.08);
}

.step-label {
  padding: 13px 14px 9px;
  color: #8c5d21;
  font-size: 16px;
  font-weight: 800;
}

.route-card p {
  margin: 0;
  padding: 13px 14px 16px;
  color: #4c4740;
  font-size: 17px;
}

.arrival {
  max-width: 760px;
  margin: 8px auto 34px;
  padding: 20px 18px 30px;
  color: #ffffff;
  background: #2c2925;
}

.arrival p {
  margin: 0 0 6px;
  color: rgba(255, 255, 255, 0.68);
  font-weight: 700;
}

.arrival strong {
  display: block;
  font-size: 20px;
  line-height: 1.4;
}

@media (max-width: 380px) {
  .stage-nav {
    gap: 6px;
    padding-inline: 8px;
  }

  .stage-link {
    min-height: 50px;
  }

  .stage-link span {
    font-size: 14px;
  }
}