:root {
  --white: #FFFFFF;
  --blue: #004481;
  --blue-deep: #012a52;
  --gold: #FFB81C;
  --gray: #F4F4F4;
  --text: #1b2733;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  font-family: "Inter", "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { width: min(1180px, 92%); margin: 0 auto; }
.narrow { width: min(860px, 100%); }

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid #dbe5f0;
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  color: var(--blue);
  font-size: 1.5rem;
  font-weight: 800;
}

.brand-logo {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  border: 1px solid #c8daec;
  background: #fff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, .12);
}

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

.main-nav {
  margin-left: auto;
  display: flex;
  gap: 1rem;
  font-weight: 600;
}

.main-nav a.active {
  color: var(--blue-deep);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.login-btn {
  margin-left: .4rem;
  background: linear-gradient(135deg, var(--blue), #0a5ea8);
  color: #fff;
  padding: .65rem 1.05rem;
  border-radius: 999px;
  font-weight: 700;
  box-shadow: 0 8px 18px rgba(0, 68, 129, .22);
}

.menu-toggle {
  display: none;
  margin-left: auto;
  border: 1px solid #c4d4e7;
  background: #fff;
  border-radius: 8px;
  padding: .55rem .9rem;
}

main { margin-top: 76px; }

.hero {
  padding: 4rem 0 2.6rem;
  background: radial-gradient(circle at 8% 15%, #dff0ff 0, transparent 38%),
              radial-gradient(circle at 92% 5%, #ffe8b0 0, transparent 35%),
              linear-gradient(120deg, #f9fbff 0, #eef5ff 50%, #fffdfa 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 1.8rem;
  align-items: center;
}

.hero h1 {
  margin: .35rem 0 .8rem;
  line-height: 1.2;
  font-size: clamp(1.95rem, 4.1vw, 2.95rem);
}

.kicker {
  display: inline-flex;
  font-size: .76rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--blue);
  background: #d9ebff;
  padding: .35rem .62rem;
  border-radius: 999px;
  font-weight: 800;
}

.lead { font-size: 1.04rem; max-width: 70ch; }

.hero figure { margin: 0; }
.hero img {
  width: 100%;
  border-radius: 20px;
  display: block;
  max-height: 390px;
  object-fit: cover;
  box-shadow: 0 18px 32px rgba(7, 36, 63, .15);
}

.hero-cta {
  margin-top: 1.35rem;
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
}

.btn {
  display: inline-block;
  border-radius: 10px;
  padding: .74rem 1.1rem;
  font-weight: 700;
  border: none;
}

.btn-primary {
  background: var(--blue);
  color: #fff;
}

.btn-secondary {
  background: var(--gold);
  color: #121212;
}

.section { padding: 3.2rem 0; }
.section-soft { background: var(--gray); }
.section-dark {
  background: linear-gradient(145deg, var(--blue-deep), #003968);
  color: #edf5ff;
}
.section h2 {
  margin: 0 0 .85rem;
  line-height: 1.25;
  color: #0f3a62;
}
.section-dark h2 { color: #fff; }

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .9rem;
}

.metrics-grid article {
  border: 1px solid #d2e1f0;
  border-radius: 14px;
  background: #fff;
  padding: 1rem;
}

.metrics-grid h3 {
  margin: 0 0 .35rem;
  color: #124775;
  font-size: .93rem;
}

.metrics-grid p {
  margin: 0;
  font-weight: 700;
  color: #11293f;
}

.metrics-grid > h2 {
  grid-column: 1 / -1;
  margin: 0 0 .15rem;
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.pillar-card {
  background: #fff;
  border-radius: 16px;
  border: 1px solid #d9e6f3;
  padding: 1.1rem;
}

.article-flow p { margin-bottom: 1rem; }

.timeline-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.timeline-grid article {
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .22);
  border-radius: 14px;
  padding: 1rem;
}

.timeline-grid h3 { margin: 0 0 .4rem; color: #fff; }
.timeline-grid p { margin: 0; color: #dceaff; }

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .9rem;
}

.use-case {
  background: #fff;
  border: 1px solid #d8e4f0;
  border-radius: 14px;
  padding: 1rem;
}

.use-case h3 { margin: 0 0 .45rem; color: #184a78; }
.use-case p { margin: 0; }

.table-wrap {
  overflow-x: auto;
  border: 1px solid #cfdeed;
  border-radius: 14px;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}

th, td {
  text-align: left;
  padding: .8rem;
  border-bottom: 1px solid #e2ecf6;
}

thead th {
  background: #e8f1fb;
  color: #143f66;
}

.faq-list {
  display: grid;
  gap: .7rem;
}

.faq-item {
  border: 1px solid #d3e1ef;
  border-radius: 12px;
  background: #fff;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  text-align: left;
  border: 0;
  background: #fff;
  font-weight: 700;
  color: #153e65;
  padding: .92rem 1rem;
  cursor: pointer;
}

.faq-answer { display: none; padding: 0 1rem 1rem; }
.faq-item.open .faq-answer { display: block; }

.section-related .related-grid {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: .7rem;
}

.section-related a {
  display: block;
  background: #e5f0fb;
  border-radius: 10px;
  padding: .75rem;
  font-weight: 700;
  color: #0e3f6b;
}

.site-footer {
  background: linear-gradient(145deg, #03223f, #083663);
  color: #e8f2fd;
  padding-top: 2.4rem;
}

.site-footer a { color: #e8f2fd; }

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr;
  gap: 1rem;
}

.footer-grid ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-grid li { margin-bottom: .4rem; }

.footer-bottom {
  margin-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, .22);
  padding: 1rem 0 1.4rem;
}

.back-to-top {
  position: fixed;
  right: 18px;
  bottom: 20px;
  width: 46px;
  height: 46px;
  border: 0;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-size: 1.2rem;
  cursor: pointer;
  display: none;
}
.back-to-top.show {
  display: inline-flex;
  justify-content: center;
  align-items: center;
}

.cookie-banner {
  position: fixed;
  left: 14px;
  right: 14px;
  bottom: 14px;
  background: #0d3459;
  color: #fff;
  border-radius: 12px;
  padding: .95rem;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: .9rem;
}

.cookie-banner.show { display: flex; }
.cookie-banner a { color: var(--gold); }

@media (max-width: 1080px) {
  .metrics-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .use-cases-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .section-related .related-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 780px) {
  .header-inner {
    min-height: 64px;
    gap: .55rem;
    flex-wrap: nowrap;
  }
  .brand {
    min-width: 0;
    font-size: 1.2rem;
  }
  .brand-logo {
    width: 30px;
    height: 30px;
  }
  .menu-toggle {
    display: inline-block;
    margin-left: auto;
    padding: .45rem .7rem;
    white-space: nowrap;
    flex-shrink: 0;
  }
  .login-btn {
    margin-left: 0;
    padding: .5rem .75rem;
    font-size: .85rem;
    white-space: nowrap;
    flex-shrink: 0;
  }
  .main-nav {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    z-index: 1001;
    background: #fff;
    border-bottom: 1px solid #d8e4f0;
    box-shadow: 0 10px 20px rgba(2, 30, 54, .08);
    display: none;
    flex-direction: column;
    padding: .9rem 4%;
  }
  .main-nav.open { display: flex; }
  .hero-grid { grid-template-columns: 1fr; }
  .pillars-grid,
  .timeline-grid,
  .use-cases-grid,
  .section-related .related-grid { grid-template-columns: 1fr; }
  .cookie-banner {
    flex-direction: column;
    align-items: flex-start;
  }
}