:root {
  --navy: #071a2f;
  --navy-2: #0d2b4d;
  --blue: #1f7ae0;
  --blue-light: #eaf4ff;
  --white: #ffffff;
  --gray-100: #f4f7fb;
  --gray-300: #cbd5e1;
  --gray-600: #526173;
  --text: #142033;
  --shadow: 0 12px 34px rgba(7, 26, 47, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, Arial, Helvetica, sans-serif;
  background:
    radial-gradient(circle at top right, rgba(31, 122, 224, 0.16), transparent 32rem),
    var(--gray-100);
  color: var(--text);
}

.site-header {
  background: linear-gradient(135deg, var(--navy), var(--navy-2));
  color: var(--white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 20;
}

.header-inner {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 22px 0 14px;
}

.brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 18px;
}

.brand {
  color: var(--white);
  text-decoration: none;
  font-size: clamp(1.55rem, 4vw, 2.6rem);
  font-weight: 900;
  letter-spacing: 0.04em;
}

.brand span {
  color: #55a8ff;
}

.tagline {
  margin: 0;
  color: #c9def5;
  font-size: 0.95rem;
  text-align: right;
}

.week-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  padding: 2px 0 10px;
}

.week-column {
  display: grid;
  gap: 8px;
}

.week-nav a {
  color: #dcecff;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  padding: 9px 13px;
  font-size: 0.88rem;
  font-weight: 750;
  width: 100%;
  text-align: center;
  transition: 0.2s ease;
}

.week-nav a:hover,
.week-nav a:focus-visible {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.5);
  color: var(--white);
}

.week-nav a.active {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--white);
}

main {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 58px 0 70px;
}

.hero {
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(203, 213, 225, 0.8);
  border-radius: 24px;
  padding: clamp(28px, 5vw, 54px);
  box-shadow: var(--shadow);
}

.eyebrow {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--blue);
  font-size: 0.82rem;
  font-weight: 850;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  max-width: 850px;
  margin: 0;
  color: var(--navy);
  font-size: clamp(2.15rem, 5vw, 4.7rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.hero p {
  max-width: 720px;
  margin: 24px 0 0;
  color: var(--gray-600);
  font-size: clamp(1rem, 2vw, 1.16rem);
  line-height: 1.75;
}

.week-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 28px;
}

.home-grid {
  grid-template-columns: repeat(2, 1fr);
}

.card {
  background: var(--white);
  border: 1px solid var(--gray-300);
  border-radius: 18px;
  padding: 24px;
  min-height: 170px;
  box-shadow: 0 8px 24px rgba(7, 26, 47, 0.07);
}

.card h2 {
  margin: 0 0 10px;
  color: var(--navy);
  font-size: 1.2rem;
}

.card p {
  margin: 0;
  color: var(--gray-600);
  line-height: 1.65;
}

.footer {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 0 0 34px;
  color: var(--gray-600);
  font-size: 0.9rem;
  text-align: center;
}

@media (max-width: 800px) {
  .week-nav {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .brand-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .tagline {
    text-align: left;
  }

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

  main {
    padding-top: 34px;
  }
}