:root {
  color-scheme: light;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: #102033;
  background: #edf5ff;
  --ink: #102033;
  --muted: #5d6f86;
  --line: rgba(39, 84, 132, 0.16);
  --surface: rgba(255, 255, 255, 0.92);
  --surface-strong: #ffffff;
  --accent: #1769e0;
  --accent-dark: #0b4fb3;
  --accent-soft: #e6f0ff;
  --shadow: 0 24px 70px rgba(20, 67, 126, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background:
    linear-gradient(180deg, #edf5ff 0%, #f8fbff 46%, #eef4fb 100%);
}

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

.skipLink {
  position: fixed;
  z-index: 40;
  top: 12px;
  left: 12px;
  transform: translateY(-160%);
  padding: 9px 12px;
  border-radius: 8px;
  background: var(--surface-strong);
  color: var(--accent-dark);
  font-weight: 800;
  box-shadow: var(--shadow);
}

.skipLink:focus {
  transform: translateY(0);
}

.portalTop {
  position: fixed;
  z-index: 20;
  top: 0;
  right: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 74px;
  padding: 14px 52px;
  color: #f3f9ff;
  background: rgba(7, 22, 43, 0.78);
  border-bottom: 1px solid rgba(136, 191, 255, 0.18);
  backdrop-filter: blur(14px);
  box-shadow: 0 18px 46px rgba(2, 12, 28, 0.28);
}

.brandMark {
  display: grid;
  gap: 3px;
  min-width: 210px;
}

.brandMark span {
  color: #8ec8ff;
  font-size: 13px;
  font-weight: 700;
}

.brandMark strong {
  color: #ffffff;
  font-size: 17px;
  letter-spacing: 0;
}

.portalNav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  min-width: 0;
  font-size: 14px;
}

.portalNav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 8px 13px;
  border-radius: 8px;
  color: rgba(243, 249, 255, 0.9);
  transition: color 180ms ease, background 180ms ease, transform 180ms ease;
}

.portalNav a:hover,
.portalNav a:focus-visible {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
}

.portalNav a:active,
.primaryAction:active,
.secondaryAction:active,
.entryPrimary:active,
.entryRow:active {
  transform: translateY(1px);
}

.navLogin {
  border: 1px solid rgba(126, 190, 255, 0.42);
  background: rgba(126, 190, 255, 0.14);
}

.hero {
  position: relative;
  min-height: 84dvh;
  overflow: hidden;
  color: #ffffff;
}

.hero picture,
.hero img,
.heroShade {
  position: absolute;
  inset: 0;
}

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

.heroShade {
  background:
    linear-gradient(90deg, rgba(5, 18, 40, 0.94) 0%, rgba(7, 36, 72, 0.78) 42%, rgba(8, 48, 96, 0.28) 76%, rgba(8, 48, 96, 0.12) 100%),
    linear-gradient(180deg, rgba(5, 18, 40, 0.18) 0%, rgba(5, 18, 40, 0.62) 100%);
}

.heroInner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  align-items: center;
  gap: 42px;
  width: min(1220px, calc(100% - 72px));
  min-height: 84dvh;
  margin: 0 auto;
  padding: 112px 0 96px;
}

.heroCopy {
  display: grid;
  gap: 18px;
  max-width: 720px;
}

.eyebrow,
.sectionHead p {
  margin: 0;
  color: #73c8ff;
  font-size: 13px;
  font-weight: 800;
}

.hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: 58px;
  line-height: 1.1;
  letter-spacing: 0;
  text-wrap: balance;
}

.heroLead {
  max-width: 620px;
  margin: 0;
  color: rgba(238, 247, 255, 0.9);
  font-size: 18px;
  line-height: 1.75;
}

.heroActions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 10px;
}

.primaryAction,
.secondaryAction {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border-radius: 8px;
  font-weight: 800;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.primaryAction {
  min-width: 156px;
  padding: 14px 28px;
  border: 1px solid #8bc9ff;
  background: #eef7ff;
  color: #073766;
  box-shadow: 0 18px 46px rgba(23, 105, 224, 0.28);
}

.secondaryAction {
  min-width: 144px;
  padding: 13px 22px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
}

.primaryAction:hover,
.primaryAction:focus-visible {
  background: #ffffff;
  box-shadow: 0 22px 54px rgba(23, 105, 224, 0.36);
  transform: translateY(-2px);
}

.secondaryAction:hover,
.secondaryAction:focus-visible {
  border-color: rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.14);
  transform: translateY(-2px);
}

.heroPanel {
  justify-self: end;
  width: min(100%, 410px);
  padding: 24px;
  border: 1px solid rgba(227, 244, 255, 0.22);
  border-radius: 8px;
  background: rgba(8, 25, 49, 0.72);
  backdrop-filter: blur(14px);
  box-shadow: 0 28px 82px rgba(0, 12, 28, 0.36);
}

.heroPanel > div {
  display: grid;
  gap: 8px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(227, 244, 255, 0.16);
}

.heroPanel span,
.heroPanel dt {
  color: rgba(219, 237, 255, 0.7);
  font-size: 13px;
}

.heroPanel strong {
  color: #ffffff;
  font-size: 24px;
  line-height: 1.35;
}

.heroPanel dl {
  display: grid;
  gap: 14px;
  margin: 18px 0 0;
}

.heroPanel dl div {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
}

.heroPanel dt,
.heroPanel dd {
  margin: 0;
}

.heroPanel dd {
  color: #eef7ff;
  font-size: 15px;
  line-height: 1.45;
}

.heroRail {
  position: absolute;
  z-index: 3;
  right: 0;
  bottom: 0;
  left: 0;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(7, 22, 43, 0.78);
  backdrop-filter: blur(12px);
}

.heroRail span {
  min-height: 58px;
  display: grid;
  place-items: center;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(238, 247, 255, 0.88);
  font-size: 14px;
  font-weight: 700;
}

.entryBand,
.scopeBand {
  padding: 58px 36px 68px;
}

.entryBand {
  background:
    linear-gradient(180deg, rgba(249, 252, 255, 0.98), rgba(238, 245, 255, 0.96));
}

.scopeBand {
  background:
    linear-gradient(180deg, rgba(238, 245, 255, 0.96), rgba(247, 251, 255, 0.98));
}

.sectionHead {
  display: grid;
  gap: 8px;
  width: min(1180px, 100%);
  margin: 0 auto 24px;
}

.sectionHead h2 {
  max-width: 760px;
  margin: 0;
  color: var(--ink);
  font-size: 34px;
  line-height: 1.22;
  letter-spacing: 0;
  text-wrap: balance;
}

.sectionHead span {
  max-width: 720px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}

.sectionHead.compact {
  margin-bottom: 22px;
}

.entryBoard {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(0, 1.35fr);
  gap: 18px;
  width: min(1180px, 100%);
  margin: 0 auto;
}

.entryPrimary,
.entryRow,
.scopeIntro,
.scopeGrid article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 20px 54px rgba(24, 67, 126, 0.09);
}

.entryPrimary {
  position: relative;
  display: grid;
  align-content: end;
  gap: 12px;
  min-height: 430px;
  overflow: hidden;
  padding: 30px;
  color: #ffffff;
  background:
    linear-gradient(160deg, rgba(7, 41, 86, 0.96), rgba(16, 103, 205, 0.84)),
    url("/assets/portal-hero-1280.jpg?v=20260620-fast") center / cover;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

@supports (background-image: image-set(url("/assets/portal-hero-1280.webp?v=20260620-fast") type("image/webp"))) {
  .entryPrimary {
    background:
      linear-gradient(160deg, rgba(7, 41, 86, 0.96), rgba(16, 103, 205, 0.84)),
      image-set(
        url("/assets/portal-hero-1280.webp?v=20260620-fast") type("image/webp"),
        url("/assets/portal-hero-1280.jpg?v=20260620-fast") type("image/jpeg")
      ) center / cover;
  }
}

.entryPrimary::before {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(4, 22, 48, 0.86) 100%);
  content: "";
}

.entryPrimary span,
.entryPrimary strong,
.entryPrimary em,
.entryPrimary b {
  position: relative;
}

.entryPrimary span,
.entryRow span {
  color: #7fc6ff;
  font-size: 13px;
  font-weight: 800;
}

.entryPrimary strong {
  font-size: 34px;
  line-height: 1.16;
}

.entryPrimary em {
  max-width: 360px;
  color: rgba(238, 247, 255, 0.86);
  font-size: 15px;
  font-style: normal;
  line-height: 1.7;
}

.entryPrimary b {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-height: 42px;
  padding: 10px 16px;
  border-radius: 8px;
  background: #ffffff;
  color: var(--accent-dark);
  font-size: 14px;
}

.entryPrimary:hover,
.entryPrimary:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 30px 76px rgba(16, 82, 170, 0.22);
}

.entryList {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.entryRow {
  position: relative;
  display: grid;
  align-content: start;
  gap: 8px;
  min-height: 132px;
  padding: 20px 48px 20px 20px;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.entryRow::after {
  position: absolute;
  right: 18px;
  top: 22px;
  color: var(--accent);
  content: "进入";
  font-size: 13px;
  font-weight: 800;
}

.entryRow:hover,
.entryRow:focus-visible {
  border-color: rgba(23, 105, 224, 0.36);
  background: #ffffff;
  box-shadow: 0 24px 60px rgba(29, 92, 174, 0.13);
  transform: translateY(-2px);
}

.entryRow strong {
  color: var(--ink);
  font-size: 20px;
  line-height: 1.25;
}

.entryRow em {
  color: var(--muted);
  font-size: 14px;
  font-style: normal;
  line-height: 1.62;
}

.scopeLayout {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1.28fr);
  gap: 18px;
  width: min(1180px, 100%);
  margin: 0 auto;
}

.scopeIntro {
  display: grid;
  align-content: start;
  gap: 14px;
  min-height: 250px;
  padding: 26px;
  background:
    linear-gradient(150deg, rgba(255, 255, 255, 0.94), rgba(228, 240, 255, 0.92));
}

.scopeIntro strong {
  color: var(--ink);
  font-size: 26px;
}

.scopeIntro span {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.scopeGrid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.scopeGrid article {
  display: grid;
  gap: 10px;
  min-height: 118px;
  padding: 22px;
}

.scopeGrid article strong {
  color: var(--ink);
  font-size: 20px;
}

.scopeGrid article span {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.68;
}

a:focus-visible {
  outline: 3px solid rgba(23, 105, 224, 0.32);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 1020px) {
  .portalTop {
    padding-inline: 24px;
  }

  .heroInner,
  .entryBoard,
  .scopeLayout {
    grid-template-columns: 1fr;
  }

  .heroPanel {
    justify-self: start;
  }

  .entryPrimary {
    min-height: 300px;
  }
}

@media (max-width: 720px) {
  .portalTop {
    position: absolute;
    display: grid;
    gap: 10px;
    min-height: 0;
    padding: 14px 16px;
  }

  .brandMark {
    min-width: 0;
  }

  .portalNav {
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .portalNav a {
    flex: 0 0 auto;
  }

  .hero {
    min-height: 82dvh;
  }

  .heroShade {
    background: linear-gradient(180deg, rgba(5, 18, 40, 0.9) 0%, rgba(7, 30, 62, 0.78) 100%);
  }

  .heroInner {
    width: min(100% - 32px, 1180px);
    min-height: 82dvh;
    padding: 142px 0 98px;
    gap: 22px;
  }

  .hero h1 {
    font-size: 38px;
    line-height: 1.14;
  }

  .heroLead {
    font-size: 16px;
    line-height: 1.68;
  }

  .heroPanel {
    display: none;
  }

  .heroRail {
    grid-template-columns: repeat(5, max-content);
    overflow-x: auto;
    justify-content: start;
  }

  .heroRail span {
    min-width: 116px;
    padding-inline: 14px;
  }

  .entryBand,
  .scopeBand {
    padding: 42px 16px 52px;
  }

  .sectionHead h2 {
    font-size: 27px;
  }

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

  .entryPrimary {
    min-height: 260px;
    padding: 24px;
  }

  .entryPrimary strong {
    font-size: 28px;
  }

  .entryRow {
    min-height: 118px;
  }
}