/* ===== index_01.css — header, hero, mission ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.97);
  border-bottom: 4px solid transparent;
  border-image: linear-gradient(90deg, var(--sky), var(--green), var(--orange), var(--purple)) 1;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-logo {
  width: 58px;
  height: auto;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-name {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.3rem;
  letter-spacing: 0.02em;
}

.brand-motto {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--navy);
  font-weight: 700;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.site-nav a:not(.btn) {
  text-decoration: none;
  font-weight: 600;
  color: var(--navy);
}

.site-nav a:not(.btn):hover {
  color: var(--green);
}

.nav-toggle {
  display: none;
  background: var(--navy);
  color: #fff;
  border: 0;
  border-radius: 8px;
  padding: 8px 16px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.hero {
  position: relative;
  min-height: 82vh;
  display: flex;
  align-items: center;
  background: url("https://images.unsplash.com/photo-1582213782179-e0d53f98f2ca?auto=format&fit=crop&w=1920&q=70") center / cover no-repeat;
  color: #fff;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, rgba(0, 38, 77, 0.93) 0%, rgba(0, 55, 109, 0.78) 50%, rgba(0, 55, 109, 0.35) 100%);
}

.hero-content {
  position: relative;
  max-width: 1160px;
}

.hero h1 {
  color: #fff;
  font-size: clamp(2rem, 5vw, 3.4rem);
  max-width: 780px;
}

.hero-lead {
  font-size: 1.2rem;
  max-width: 640px;
  opacity: 0.95;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.mission {
  background: var(--bg-soft);
}

.mission-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: center;
}

.mission-logo img {
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
  background: #fff;
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.mission-text p:not(.eyebrow) {
  font-size: 1.12rem;
}

@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    padding: 10px 20px 20px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
  }
  .site-nav.is-open { display: flex; }
  .site-nav a:not(.btn) { padding: 12px 0; border-bottom: 1px solid #e6edf3; }
  .site-nav .btn { margin-top: 14px; text-align: center; }
  .mission-grid { grid-template-columns: 1fr; gap: 36px; text-align: center; }
  .mission-logo img { max-width: 260px; }
}

@media (max-width: 480px) {
  .brand-logo { width: 46px; }
  .brand-name { font-size: 1.1rem; }
  .brand-motto { font-size: 0.6rem; }
}