:root {
  --bg: #eef6f7;
  --paper: rgba(245, 251, 252, 0.82);
  --paper-strong: rgba(250, 254, 255, 0.94);
  --line: rgba(23, 58, 72, 0.12);
  --text: #0f2530;
  --muted: #55717d;
  --accent: #127c8d;
  --accent-deep: #0a5562;
  --accent-soft: rgba(18, 124, 141, 0.12);
  --shadow: 0 26px 60px rgba(20, 63, 77, 0.12);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  color: var(--text);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    linear-gradient(180deg, #f7fbfc 0%, #edf5f7 50%, #e7f0f2 100%);
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(15, 37, 48, 0.024) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 37, 48, 0.024) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.45), transparent 88%);
}

.ambient {
  position: fixed;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(22px);
  pointer-events: none;
  opacity: 0.7;
}

.ambient-left {
  top: -120px;
  left: -80px;
  background: radial-gradient(circle, rgba(64, 182, 196, 0.24), transparent 68%);
}

.ambient-right {
  right: -100px;
  bottom: 80px;
  background: radial-gradient(circle, rgba(16, 92, 120, 0.18), transparent 72%);
}

.page-shell {
  position: relative;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 24px 0 28px;
}

.hero-kicker,
.panel-kicker,
.site-footer p,
.site-footer a,
.card-tag,
.link-host {
  margin: 0;
}

.layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(0, 1.4fr);
  gap: 22px;
  align-items: stretch;
}

.hero-card,
.links-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-card {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 460px;
  padding: 34px;
  background:
    linear-gradient(155deg, rgba(251, 255, 255, 0.95), rgba(219, 238, 242, 0.84)),
    var(--paper-strong);
  position: relative;
  overflow: hidden;
}

.hero-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 20%, rgba(18, 124, 141, 0.16), transparent 28%),
    radial-gradient(circle at 82% 78%, rgba(10, 85, 98, 0.14), transparent 24%);
}

.hero-card > * {
  position: relative;
  z-index: 1;
}

.hero-kicker,
.panel-kicker,
.card-tag {
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.link-host {
  letter-spacing: 0.12em;
}

.hero-kicker,
.panel-kicker {
  color: var(--accent-deep);
  font-size: 0.78rem;
  font-weight: 700;
}

.hero-card h1,
.links-panel h2,
.link-card h3 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 700;
}

.hero-card h1 {
  margin-top: 10px;
  font-size: clamp(3rem, 5vw, 4.4rem);
  line-height: 0.96;
  letter-spacing: 0.02em;
}

.links-panel {
  padding: 28px;
  background: var(--paper);
}

.panel-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.links-panel h2 {
  margin-top: 8px;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
}

.links-panel h2:empty {
  display: none;
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.link-card {
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 20px;
  min-height: 220px;
  padding: 22px;
  color: inherit;
  text-decoration: none;
  border: 1px solid rgba(10, 85, 98, 0.12);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(234, 245, 247, 0.84));
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease,
    background 180ms ease;
}

.link-card:hover,
.link-card:focus-visible {
  transform: translateY(-5px);
  border-color: rgba(18, 124, 141, 0.42);
  box-shadow: 0 16px 34px rgba(20, 63, 77, 0.14);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(221, 241, 244, 0.92));
}

.link-card:focus-visible {
  outline: 2px solid rgba(18, 124, 141, 0.4);
  outline-offset: 2px;
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.card-tag {
  display: inline-flex;
  align-items: center;
  padding: 7px 11px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-size: 0.72rem;
  font-weight: 700;
}

.card-arrow {
  color: var(--accent);
  font-size: 1.25rem;
}

.card-copy {
  display: grid;
  gap: 10px;
}

.link-card h3 {
  font-size: 1.8rem;
  line-height: 1.06;
}

.link-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.link-host {
  color: var(--accent-deep);
  font-size: 0.75rem;
  font-weight: 700;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px 20px;
  margin-top: 18px;
  padding: 0 4px;
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer a {
  color: inherit;
  text-decoration: none;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--accent-deep);
  text-decoration: underline;
}

@media (max-width: 960px) {
  body {
    display: block;
  }

  .page-shell {
    min-height: auto;
    display: block;
    padding: 22px 0 28px;
  }

  .layout {
    grid-template-columns: 1fr;
  }

  .hero-card {
    min-height: 260px;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100% - 20px, 1180px);
    padding: 18px 0 26px;
  }

  .hero-card,
  .links-panel {
    padding: 22px;
  }

  .hero-card h1 {
    font-size: 2.7rem;
  }

  .link-grid {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}