:root {
  color-scheme: light;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(201, 111, 59, 0.08), transparent 34%),
    linear-gradient(180deg, #eef5ed 0%, #f9faf7 34%, #ffffff 100%);
  color: #0f1720;
}

.page-hero {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(15, 23, 32, 0.92), rgba(31, 77, 63, 0.82)),
    radial-gradient(circle at top right, rgba(217, 199, 161, 0.16), transparent 28%);
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 30px 30px;
}

.lang-switch {
  position: relative;
}

.lang-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  min-width: 8rem;
  padding: 0.78rem 1rem;
  border: 1px solid rgba(15, 23, 32, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 12px 30px rgba(15, 23, 32, 0.08);
  backdrop-filter: blur(16px);
  color: #0f1720;
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transition: all 0.2s ease;
}

.lang-trigger:hover {
  border-color: rgba(31, 77, 63, 0.2);
}

.lang-value {
  flex: 1;
  text-align: left;
}

.lang-chevron {
  font-size: 0.85rem;
  color: rgba(15, 23, 32, 0.5);
  transition: transform 0.2s ease;
}

.lang-switch-open .lang-chevron {
  transform: rotate(180deg);
}

.lang-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 0.65rem);
  min-width: 12rem;
  padding: 0.45rem;
  border: 1px solid rgba(15, 23, 32, 0.08);
  border-radius: 1.25rem;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 20px 60px rgba(15, 23, 32, 0.12);
  backdrop-filter: blur(18px);
}

.lang-menu.hidden {
  display: none;
}

.lang-option {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  border: 0;
  border-radius: 1rem;
  background: transparent;
  color: rgba(15, 23, 32, 0.72);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.9rem 1rem;
  transition: all 0.2s ease;
}

.lang-option:hover {
  background: rgba(244, 247, 242, 1);
  color: #0f1720;
}

.lang-option-active {
  background: linear-gradient(135deg, rgba(31, 77, 63, 0.12), rgba(47, 106, 82, 0.12));
  color: #1f4d3f;
}

.lang-option-mark {
  font-size: 0.78rem;
  color: #1f4d3f;
}

.card-lift {
  transition: transform 0.24s ease, box-shadow 0.24s ease;
}

.card-lift:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 70px rgba(15, 23, 32, 0.12);
}

.menu-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid rgba(15, 23, 32, 0.1);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  color: #0f1720;
}

.mobile-panel {
  border-top: 1px solid rgba(15, 23, 32, 0.08);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
}

.footer-link {
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: #1f4d3f;
}