:root {
  --bg: #f3efe9;
  --text-light: #f5f2ec;
  --text-muted: rgba(245, 242, 236, 0.68);
  --dark-soft: #1a1e24;
  --border-light: rgba(255, 255, 255, 0.16);
  --dot: rgba(255, 255, 255, 0.42);
  --dot-active: rgba(255, 255, 255, 0.9);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.18);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
}

body {
  color: #101114;
}

.page-shell {
  min-height: 100vh;
}

.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 12;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 1rem;
  min-height: 2.95rem;
  padding: 0 1.6rem;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(16, 17, 20, 0.08);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  transition: transform 260ms ease, opacity 260ms ease;
}

body.show-sticky-nav .top-nav {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.hero-carousel {
  position: relative;
  height: 100vh;
  min-height: 100vh;
  background: #ece8e3;
  overflow: hidden;
}

.hero-tab-strip {
  position: absolute;
  top: 0.22rem;
  left: clamp(1rem, 2.4vw, 2.75rem);
  right: clamp(1rem, 2.4vw, 2.75rem);
  z-index: 6;
}

.hero-nav-lite {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 0.7rem 0;
}

.nav-tabs {
  display: flex;
  align-items: center;
}

.nav-tabs-top {
  gap: 1.8rem;
  align-self: stretch;
}

.nav-tabs-hero {
  gap: 2.1rem;
}

.nav-tab {
  border: 0;
  padding: 0;
  background: transparent;
  line-height: 1.1;
  cursor: pointer;
  transition: color 180ms ease, opacity 180ms ease;
}

.nav-tabs-top .nav-tab {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 100%;
  color: rgba(16, 17, 20, 0.74);
  font-size: 14px;
  letter-spacing: 0.08em;
}

.nav-tabs-top .nav-tab::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: rgba(16, 17, 20, 0.56);
  transform: scaleX(0);
  transition: transform 180ms ease;
}

.nav-tabs-top .nav-tab:hover,
.nav-tabs-top .nav-tab.is-active {
  color: #101114;
}

.nav-tabs-top .nav-tab:hover::after,
.nav-tabs-top .nav-tab.is-active::after {
  transform: scaleX(1);
}

.nav-tabs-hero .nav-tab {
  position: relative;
  color: rgba(16, 17, 20, 0.72);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-shadow: none;
}

.nav-tabs-hero .nav-tab::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.45rem;
  height: 1px;
  background: rgba(16, 17, 20, 0.56);
  transform: scaleX(0);
  transition: transform 180ms ease;
}

.nav-tabs-hero .nav-tab:hover,
.nav-tabs-hero .nav-tab.is-active {
  color: rgba(16, 17, 20, 0.9);
}

.nav-tabs-hero .nav-tab:hover::after,
.nav-tabs-hero .nav-tab.is-active::after {
  transform: scaleX(1);
}

.social-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.social-links-top {
  gap: 0.78rem;
}

.social-links-hero {
  gap: 1.12rem;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: inherit;
  opacity: 0.9;
  transition: transform 180ms ease, opacity 180ms ease;
}

.social-link:hover {
  transform: translateY(-1px);
  opacity: 1;
}

.social-link-image {
  padding: 0;
}

.social-links-top .social-link {
  color: rgba(16, 17, 20, 0.78);
}

.social-links-hero .social-link {
  color: rgba(16, 17, 20, 0.72);
}

.social-image {
  width: 1.08rem;
  height: 1.08rem;
  display: block;
  object-fit: contain;
  mix-blend-mode: multiply;
  filter: contrast(1.02);
}

.social-links-hero .social-image {
  width: 1.08rem;
  height: 1.08rem;
}

.slides {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 100vh;
}

.slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  pointer-events: none;
  overflow: hidden;
  transition: opacity 480ms ease;
  background: linear-gradient(180deg, rgba(247, 245, 241, 0.9), rgba(235, 230, 224, 0.96));
}

.slide.is-active {
  opacity: 1;
  pointer-events: auto;
}

.slide-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
}

.nav-arrow {
  position: absolute;
  top: 50%;
  z-index: 3;
  width: 3.25rem;
  height: 3.25rem;
  border: 1px solid var(--border-light);
  border-radius: 999px;
  background: rgba(19, 22, 27, 0.35);
  color: #ffffff;
  cursor: pointer;
  transform: translateY(-50%);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  transition: background-color 180ms ease, transform 180ms ease;
}

.nav-arrow:hover {
  background: rgba(19, 22, 27, 0.56);
}

.nav-arrow:active {
  transform: translateY(-50%) scale(0.96);
}

.nav-arrow span {
  display: block;
  font-size: 2rem;
  line-height: 1;
  transform: translateY(-1px);
}

.nav-prev {
  left: 1.5rem;
}

.nav-next {
  right: 1.5rem;
}

.bottom-brand-bar {
  position: absolute;
  left: 50%;
  bottom: 1.5rem;
  z-index: 3;
  transform: translateX(-50%);
  width: fit-content;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.48rem;
  padding: 0.52rem 0.72rem;
  border: 1px solid var(--border-light);
  border-radius: 999px;
  background: rgba(42, 46, 53, 0.44);
  color: var(--text-light);
  backdrop-filter: blur(10px);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.1);
}

.dot {
  width: 0.5rem;
  height: 0.5rem;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: var(--dot);
  cursor: pointer;
  transition: transform 180ms ease, background-color 180ms ease;
}

.dot.is-active {
  background: var(--dot-active);
  transform: scale(1.14);
}

.site-footer {
  padding: 1.35rem 1.5rem 2.3rem;
  text-align: center;
  background: linear-gradient(180deg, var(--dark-soft), #0c0f13);
  color: var(--text-light);
}

.site-footer p {
  margin: 0.35rem 0;
  font-family: SimHei, "Microsoft YaHei", sans-serif;
  font-size: 12px;
  font-weight: 400;
  color: var(--text-muted);
}

@media (max-width: 980px) {
  .top-nav {
    grid-template-columns: 1fr;
    gap: 0.7rem;
    min-height: auto;
    padding: 0.58rem 0.8rem;
  }

  .hero-tab-strip {
    top: 0.18rem;
    left: 0.75rem;
    right: 0.75rem;
  }

  .hero-nav-lite {
    flex-direction: column;
    align-items: stretch;
    gap: 0.85rem;
  }

  .nav-tabs-top,
  .nav-tabs-hero,
  .social-links-top,
  .social-links-hero {
    justify-content: center;
    flex-wrap: wrap;
  }

  .nav-tabs-hero {
    gap: 1.2rem;
  }

  .social-links-hero {
    gap: 1rem;
  }

  .hero-carousel,
  .slides,
  .slide,
  .slide-image {
    height: 100vh;
    min-height: 100vh;
  }

  .nav-arrow {
    width: 2.8rem;
    height: 2.8rem;
  }

  .nav-prev {
    left: 0.75rem;
  }

  .nav-next {
    right: 0.75rem;
  }

  .bottom-brand-bar {
    gap: 0.45rem;
    padding: 0.5rem 0.68rem;
  }

  .site-footer p {
    font-size: 12px;
    line-height: 1.7;
  }
}