:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-soft: #f6f9fd;
  --text: #0f2942;
  --muted: #5d7186;
  --line: rgba(15, 41, 66, 0.12);
  --primary: #123e67;
  --primary-2: #0f3355;
  --accent: #1d8fc8;
  --maxw: 1160px;
  --shadow: 0 12px 24px rgba(15, 41, 66, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

[id] {
  scroll-margin-top: 108px;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 8% -12%, rgba(29, 143, 200, 0.18), transparent 34%),
    radial-gradient(circle at 92% -16%, rgba(18, 62, 103, 0.14), transparent 40%),
    linear-gradient(180deg, #ffffff 0%, #f7fbff 52%, #f4f9ff 100%);
  line-height: 1.65;
}

.ambient {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.45;
  background-image:
    linear-gradient(rgba(18, 62, 103, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18, 62, 103, 0.06) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(circle at 50% 20%, rgba(0, 0, 0, 0.9), transparent 78%);
}

.container {
  width: min(92vw, var(--maxw));
  margin: 0 auto;
}

.nav-wrap {
  position: sticky;
  top: 12px;
  z-index: 50;
  padding-top: 12px;
}

.site-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid rgba(15, 41, 66, 0.14);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(241, 249, 255, 0.9));
  backdrop-filter: blur(8px);
  box-shadow: 0 8px 20px rgba(15, 41, 66, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand img {
  display: block;
  height: 48px;
  width: auto;
}

.links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.links a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 700;
  font-size: 14px;
  padding: 8px 11px;
  border-radius: 10px;
  transition: all 0.24s ease;
}

.links a:hover,
.links a.is-active {
  color: var(--text);
  background: rgba(29, 143, 200, 0.14);
  box-shadow: inset 0 0 0 1px rgba(29, 143, 200, 0.26);
}

.hero {
  padding: 62px 0 30px;
}

.hero h1 {
  margin: 0;
  font-family: "Manrope", sans-serif;
  font-size: clamp(26px, 3.7vw, 42px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--text);
  max-width: 14ch;
}

.hero p {
  margin: 16px 0 0;
  color: var(--muted);
  max-width: 62ch;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  font-weight: 700;
  border-radius: 999px;
  padding: 10px 18px;
  border: 1px solid transparent;
  transition: transform 0.24s ease, box-shadow 0.24s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: 0 8px 18px rgba(18, 62, 103, 0.24);
}

.btn-ghost {
  color: var(--text);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.92);
}

section {
  padding: 30px 0;
}

main > section:not(.hero) {
  background:
    linear-gradient(180deg, rgba(246, 249, 253, 0.94), rgba(246, 249, 253, 0.86));
  border: 1px solid var(--line);
  border-radius: 16px;
  padding-left: 20px;
  padding-right: 20px;
  margin-bottom: 14px;
  box-shadow: 0 10px 24px rgba(15, 41, 66, 0.05);
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 14px;
  margin-bottom: 14px;
}

.section-head h2 {
  margin: 0;
  font-family: "Manrope", sans-serif;
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  max-width: 58ch;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

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

.grid.single-col {
  grid-template-columns: minmax(0, 520px);
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  border: 1px solid rgba(15, 41, 66, 0.14);
  border-radius: 14px;
  background: linear-gradient(180deg, #ffffff 0%, #f9fcff 100%);
  overflow: hidden;
  transition: transform 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

.card:hover {
  transform: translateY(-2px);
  border-color: rgba(29, 143, 200, 0.42);
  box-shadow: 0 12px 22px rgba(15, 41, 66, 0.11);
}

.media {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(18, 62, 103, 0.16), rgba(29, 143, 200, 0.14));
}

.media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-body {
  padding: 14px;
}

.chip {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 4px 9px;
  background: rgba(18, 62, 103, 0.1);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 8px;
}

.card h3 {
  margin: 0;
  font-size: 16px;
  line-height: 1.34;
}

.card p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.panel {
  border: 1px solid rgba(15, 41, 66, 0.14);
  border-radius: 16px;
  background: #ffffff;
  box-shadow: var(--shadow);
  padding: 18px;
}

.panel h3 {
  margin: 0;
  font-size: 18px;
}

.panel p {
  margin: 8px 0 0;
  color: var(--muted);
}

.panel a {
  text-decoration: none;
  color: var(--primary);
  font-weight: 700;
}

footer {
  margin: 24px 0 32px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

footer a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 700;
}

@media (max-width: 980px) {
  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .site-nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .links {
    justify-content: flex-start;
  }

  .hero {
    padding-top: 44px;
  }

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

  .grid.single-col,
  .grid.two-col {
    grid-template-columns: 1fr;
  }
}