* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Trebuchet MS', 'Segoe UI', Arial, sans-serif;
  color: var(--text-main);
  background: linear-gradient(180deg, var(--bg-main) 0%, #ffffff 100%);
  line-height: 1.6;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: #0f7ec2;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(245, 251, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}

.header-inner {
  width: min(var(--max-width), calc(100% - 32px));
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0;
  color: #185f8f;
}

.brand span {
  color: var(--brand-berry);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  background: #fff;
  color: var(--text-main);
  font-weight: 700;
}

.main-nav ul {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
  gap: 14px;
  flex-wrap: wrap;
}

.main-nav a {
  display: inline-block;
  padding: 7px 10px;
  border-radius: var(--radius-pill);
  color: #245673;
  font-weight: 700;
}

.main-nav a:hover,
.main-nav a.current {
  text-decoration: none;
  background: #dcf1ff;
}

main section {
  padding: 56px 0;
}

.container {
  width: min(var(--max-width), calc(100% - 32px));
  margin: 0 auto;
}

h1,
h2,
h3 {
  margin: 0 0 12px;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 5vw, 2.75rem);
  color: #1c628e;
}

h2 {
  font-size: clamp(1.4rem, 3vw, 1.95rem);
  color: #1a587f;
}

h3 {
  font-size: 1.12rem;
  color: #1f5273;
}

p {
  margin: 0 0 14px;
  color: var(--text-sub);
}

.lead {
  font-size: 1.06rem;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-block;
  border: 0;
  border-radius: var(--radius-pill);
  padding: 12px 20px;
  font-weight: 800;
  cursor: pointer;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(90deg, var(--brand-lemon), var(--brand-peach));
  color: #553f00;
}

.btn-secondary {
  background: #d8f1ff;
  color: #0f628f;
}

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

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fff;
  padding: 16px;
  box-shadow: var(--shadow-soft);
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.media-grid figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: #fff;
}

.media-grid figcaption {
  padding: 9px 10px;
  font-size: 0.9rem;
  color: #305673;
  border-top: 1px solid var(--line);
}

.content-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 18px;
}

.checklist {
  margin: 0;
  padding-left: 20px;
}

.checklist li {
  margin-bottom: 8px;
  color: var(--text-sub);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #f7fcff;
}

.footer-inner {
  width: min(var(--max-width), calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 32px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.small {
  font-size: 0.92rem;
  color: #58708a;
}

.u-mt-10 {
  margin-top: 10px;
}

.u-mt-14 {
  margin-top: 14px;
}

@media (max-width: 920px) {
  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }

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

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

@media (max-width: 720px) {
  .header-inner {
    padding: 12px 0;
    align-items: flex-start;
  }

  .nav-toggle {
    display: inline-block;
  }

  .main-nav {
    width: 100%;
    display: none;
  }

  .main-nav.open {
    display: block;
  }

  .main-nav ul {
    width: 100%;
    border-top: 1px solid var(--line);
    margin-top: 8px;
    padding-top: 10px;
  }

  .feature-grid,
  .media-grid {
    grid-template-columns: 1fr;
  }
}