:root {
  color-scheme: light;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: #172033;
  background: #f4f7f4;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

.portalTop {
  position: fixed;
  z-index: 20;
  top: 0;
  right: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px clamp(18px, 4vw, 52px);
  color: #fff;
  background: rgba(12, 20, 32, 0.55);
  backdrop-filter: blur(12px);
}

.brandMark {
  display: grid;
  gap: 2px;
}

.brandMark span,
.sectionHead p,
.heroContent p {
  color: #b9d6ce;
  font-size: 13px;
}

.brandMark strong {
  font-size: 16px;
}

.portalNav {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
}

.portalNav a {
  padding: 8px 10px;
  border-radius: 6px;
  color: rgba(255, 255, 255, 0.92);
}

.portalNav a:hover {
  background: rgba(255, 255, 255, 0.12);
}

.hero {
  position: relative;
  min-height: clamp(520px, 74vh, 720px);
  overflow: hidden;
  color: #fff;
}

.hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.heroOverlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(9, 16, 27, 0.86) 0%, rgba(9, 16, 27, 0.5) 42%, rgba(9, 16, 27, 0.12) 100%);
}

.heroContent {
  position: relative;
  z-index: 2;
  display: grid;
  align-content: center;
  gap: 18px;
  width: min(690px, 100%);
  min-height: inherit;
  padding: 96px clamp(18px, 6vw, 72px) 58px;
}

.heroContent h1 {
  margin: 0;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.08;
  letter-spacing: 0;
}

.heroContent span {
  display: block;
  max-width: 620px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 18px;
  line-height: 1.75;
}

.heroContent p,
.sectionHead p {
  margin: 0;
  font-weight: 700;
}

.heroActions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

.primaryAction,
.secondaryAction {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 18px;
  border-radius: 6px;
  font-weight: 700;
}

.primaryAction {
  min-height: 56px;
  padding: 14px 30px;
  border: 1px solid #2f80ed;
  background: #2f80ed;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 12px 28px rgba(47, 128, 237, 0.32);
}

.secondaryAction {
  border: 1px solid rgba(255, 255, 255, 0.58);
  color: #fff;
}

.entryBand,
.scopeBand {
  padding: 34px clamp(18px, 5vw, 64px) 48px;
}

.entryBand {
  background: #fff;
}

.scopeBand {
  background: #eef4f0;
}

.sectionHead {
  display: grid;
  gap: 8px;
  max-width: 900px;
  margin: 0 auto 18px;
}

.sectionHead h2 {
  margin: 0;
  font-size: 26px;
  letter-spacing: 0;
}

.entryGrid,
.scopeGrid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  width: min(1180px, 100%);
  margin: 0 auto;
}

.entryCard,
.scopeGrid article {
  display: grid;
  gap: 10px;
  min-height: 146px;
  padding: 18px;
  border: 1px solid #dbe5df;
  border-radius: 8px;
  background: #fff;
}

.entryCard {
  transition: transform 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease;
}

.entryCard:hover {
  transform: translateY(-2px);
  border-color: #7aa991;
  box-shadow: 0 14px 30px rgba(23, 32, 51, 0.1);
}

.entryCard span,
.scopeGrid article span {
  color: #5b6d7e;
  font-size: 13px;
  line-height: 1.6;
}

.entryCard strong,
.scopeGrid article strong {
  font-size: 20px;
}

.entryCard em {
  color: #52606d;
  font-size: 14px;
  font-style: normal;
  line-height: 1.65;
}

.scopeGrid article {
  min-height: 126px;
  border-color: #d6e3da;
  background: #fbfdfc;
}

@media (max-width: 900px) {
  .portalTop {
    position: absolute;
    align-items: flex-start;
  }

  .portalNav {
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .entryGrid,
  .scopeGrid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .portalTop {
    display: grid;
  }

  .portalNav {
    justify-content: flex-start;
    gap: 6px;
  }

  .portalNav a {
    padding: 7px 8px;
  }

  .hero {
    min-height: 620px;
  }

  .heroOverlay {
    background: rgba(9, 16, 27, 0.68);
  }

  .heroContent {
    padding-top: 142px;
  }

  .heroContent span {
    font-size: 16px;
  }

  .entryGrid,
  .scopeGrid {
    grid-template-columns: 1fr;
  }
}