/* Design tokens */
:root {
  --color-navy: #1e3c78;
  --color-navy-dark: #1d3a73;
  --color-red: #b3202f;
  --color-green-badge: #2e7d3a;
  --color-green-bg: #e3efe4;
  --color-red-bg: #fbe6e6;
  --color-card-bg: #f2f2f0;
  --color-profile-bg: #e6ecf8;
  --color-stay-bg: #f5f5f4;
  --color-text: #1a1f29;
  --color-text-muted: #5a6470;
  --color-text-body: #555c66;
  --color-link: #1a5cae;
  --color-footer-link: #eef2f9;
  --color-footer-muted: #c9d3e6;
  --font-sans: "Public Sans", system-ui, sans-serif;
  --font-serif: "Source Serif 4", Georgia, serif;
  --max-width: 1520px;
  --shadow-icon: 0 7px 16px rgba(30, 60, 120, 0.28);
  --shadow-profile: 0 6px 14px rgba(30, 60, 120, 0.3);
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: #ffffff;
  overflow-x: hidden;
}

a {
  text-decoration: none;
}

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

/* Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: 64px;
  padding-right: 64px;
}

/* Header */
.site-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 64px;
  border-bottom: 3px solid var(--color-red);
}

.site-header__logo {
  flex: none;
  width: 64px;
  height: 64px;
}

.site-header__logo img {
  width: 64px;
  height: 64px;
  object-fit: contain;
}

.site-header__label {
  font-size: 15px;
  color: var(--color-text-muted);
  letter-spacing: 0.2px;
}

/* Hero */
.hero {
  text-align: center;
  padding: 68px 0 8px;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: 68px;
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: -0.5px;
}

.hero__subtitle {
  max-width: 700px;
  margin: 26px auto 0;
  font-size: 23px;
  line-height: 1.5;
  color: var(--color-text-muted);
}

/* Platform sections */
.platform-section {
  margin-top: 92px;
}

.platform-section--staff {
  margin-top: 72px;
}

.section-header {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.section-header__icon {
  width: 46px;
  height: 46px;
  flex: none;
  border-radius: 50%;
  background: var(--color-profile-bg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.section-header__title {
  font-size: 31px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.3px;
}

.badge {
  padding: 6px 13px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.6px;
}

.badge--open {
  background: var(--color-green-bg);
  color: var(--color-green-badge);
}

.badge--restricted {
  background: var(--color-red-bg);
  color: var(--color-red);
}

.section-desc {
  margin-top: 18px;
  font-size: 18px;
  line-height: 1.5;
  color: var(--color-text-muted);
}

.section-desc--narrow {
  max-width: 920px;
}

/* Card grid */
.card-grid {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

/* App cards */
.app-card {
  position: relative;
  background: var(--color-card-bg);
  border-radius: 4px;
  padding: 30px 30px 28px;
  display: flex;
  flex-direction: column;
}

.app-card__badge {
  position: absolute;
  top: 26px;
  right: 26px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-red-bg);
  color: var(--color-red);
  padding: 5px 11px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
}

.app-card__icon {
  width: 64px;
  height: 64px;
  border-radius: 13px;
  background: var(--color-navy);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-icon);
}

.app-card__title {
  margin-top: 28px;
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
}

.app-card__desc {
  margin-top: 14px;
  font-size: 17px;
  line-height: 1.55;
  color: var(--color-text-body);
  flex: 1;
}

.app-card__link {
  margin-top: 28px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-link);
  font-weight: 700;
  font-size: 17px;
}

.app-card__link:hover {
  text-decoration: underline;
}

/* Profile band */
.profile-band {
  margin-top: 84px;
  background: var(--color-profile-bg);
}

.profile-band__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding-top: 40px;
  padding-bottom: 40px;
}

.profile-band__content {
  display: flex;
  align-items: center;
  gap: 22px;
}

.profile-band__avatar {
  width: 66px;
  height: 66px;
  flex: none;
  border-radius: 50%;
  background: var(--color-navy);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-profile);
}

.profile-band__title {
  font-size: 23px;
  font-weight: 700;
  color: var(--color-text);
}

.profile-band__desc {
  margin-top: 5px;
  font-size: 17px;
  color: var(--color-text-body);
}

.btn-profile {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: var(--color-navy);
  color: #ffffff;
  font-weight: 700;
  font-size: 17px;
  padding: 15px 24px;
  border-radius: 8px;
}

.btn-profile:hover {
  background: var(--color-navy-dark);
}

/* Stay in touch */
.stay-in-touch {
  background: var(--color-stay-bg);
}

.stay-in-touch__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding-top: 56px;
  padding-bottom: 56px;
}

.stay-in-touch__title {
  font-size: 27px;
  font-weight: 700;
  color: var(--color-text);
}

.btn-signup {
  margin-top: 22px;
  display: inline-flex;
  align-items: center;
  background: #ffffff;
  border: 1.5px solid var(--color-navy);
  color: var(--color-navy);
  font-weight: 700;
  font-size: 17px;
  padding: 14px 24px;
  border-radius: 6px;
}

.btn-signup:hover {
  background: var(--color-profile-bg);
}

.social-links {
  display: flex;
  align-items: center;
  gap: 14px;
}

.social-links__link {
  width: 46px;
  height: 46px;
  border-radius: 8px;
  background: var(--color-navy);
  display: flex;
  align-items: center;
  justify-content: center;
}

.social-links__link:hover {
  background: var(--color-navy-dark);
}

/* Footer */
.site-footer {
  background: var(--color-navy-dark);
  color: #ffffff;
}

.site-footer__top {
  display: flex;
  align-items: flex-start;
  gap: 64px;
  padding-top: 60px;
  padding-bottom: 48px;
}

.site-footer__logo {
  flex: none;
  width: 96px;
  height: 96px;
}

.site-footer__logo img {
  width: 96px;
  height: 96px;
  object-fit: contain;
}

.site-footer__nav {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px 40px;
  max-width: 1000px;
  margin-left: auto;
}

.site-footer__nav a {
  color: var(--color-footer-link);
  font-size: 18px;
  font-weight: 500;
}

.site-footer__nav a:hover {
  text-decoration: underline;
}

.site-footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.site-footer__disclaimer {
  padding-top: 32px;
  padding-bottom: 40px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-footer-muted);
  max-width: 1340px;
}

.site-footer__disclaimer a {
  color: #ffffff;
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 1024px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .container,
  .site-header {
    padding-left: 24px;
    padding-right: 24px;
  }

  .hero__title {
    font-size: 42px;
  }

  .hero__subtitle {
    font-size: 18px;
  }

  .section-header__title {
    font-size: 24px;
  }

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

  .profile-band__inner,
  .stay-in-touch__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-footer__top {
    flex-direction: column;
    gap: 32px;
  }

  .site-footer__nav {
    margin-left: 0;
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .site-footer__nav {
    grid-template-columns: 1fr;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }
}