/* D2X International — Design system */

:root {
  --bg: #ffffff;
  --bg-soft: #f5f7fb;
  --bg-dark: #0a1628;
  --ink: #0a1628;
  --ink-soft: #3d4a5c;
  --muted: #6b7a90;
  --line: #e3e8ef;
  --line-soft: #eef1f6;
  --blue: #1e4fd9;
  --blue-deep: #0a2a7a;
  --blue-soft: #eaf0fd;
  --accent: #00b8a9;
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 24px;
  --container: 1280px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'ss01', 'cv11';
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  letter-spacing: -0.02em;
  line-height: 1.1;
  font-weight: 600;
  color: var(--ink);
}

h1 { font-size: clamp(2.5rem, 5vw + 1rem, 5rem); font-weight: 500; letter-spacing: -0.035em; }
h2 { font-size: clamp(1.875rem, 3vw + 0.5rem, 3rem); font-weight: 500; letter-spacing: -0.03em; }
h3 { font-size: clamp(1.25rem, 1.5vw + 0.5rem, 1.75rem); font-weight: 600; }
h4 { font-size: 1.125rem; font-weight: 600; }

p { color: var(--ink-soft); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--blue);
  margin-bottom: 24px;
}
.eyebrow::before {
  content: '';
  width: 24px;
  height: 1px;
  background: currentColor;
}

.lead {
  font-size: clamp(1.125rem, 1vw + 0.875rem, 1.375rem);
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 58ch;
}

/* Navigation */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line-soft);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.nav__logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav__logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--ink);
  color: #fff;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0;
}
.nav__logo-sub {
  font-size: 0.6875rem;
  color: var(--muted);
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav__links {
  display: flex;
  gap: 4px;
  list-style: none;
}
.nav__links a {
  display: inline-block;
  padding: 8px 14px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--ink-soft);
  border-radius: 8px;
  transition: all 0.2s var(--ease);
}
.nav__links a:hover { color: var(--ink); background: var(--bg-soft); }
.nav__links a.is-active { color: var(--ink); }
.nav__links a.is-active::after {
  content: '';
  display: block;
  width: 4px;
  height: 4px;
  background: var(--blue);
  border-radius: 50%;
  margin: 4px auto 0;
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  background: var(--ink);
  color: #fff;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s var(--ease);
}
.nav__cta:hover { background: var(--blue); transform: translateY(-1px); }

.nav__burger {
  display: none;
  width: 40px;
  height: 40px;
  padding: 0;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}
.nav__burger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  position: relative;
}
.nav__burger span::before,
.nav__burger span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--ink);
}
.nav__burger span::before { top: -6px; }
.nav__burger span::after { top: 6px; }

@media (max-width: 960px) {
  .nav__links, .nav__cta { display: none; }
  .nav__burger { display: inline-flex; }
  .nav.is-open .nav__mobile { display: flex; }
}

.nav__mobile {
  display: none;
  flex-direction: column;
  padding: 12px 24px 24px;
  border-top: 1px solid var(--line-soft);
  gap: 2px;
}
.nav__mobile a {
  padding: 12px 0;
  font-size: 1rem;
  font-weight: 500;
  border-bottom: 1px solid var(--line-soft);
}
.nav__mobile a:last-child { border-bottom: none; }

/* Sections */
section { padding: 96px 0; }
@media (max-width: 768px) { section { padding: 64px 0; } }

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}
.section-header__text { max-width: 640px; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: 999px;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: all 0.2s var(--ease);
  white-space: nowrap;
}
.btn--primary { background: var(--ink); color: #fff; }
.btn--primary:hover { background: var(--blue); transform: translateY(-2px); box-shadow: 0 10px 30px rgba(30, 79, 217, 0.3); }
.btn--ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn--ghost:hover { background: var(--bg-soft); border-color: var(--ink); }
.btn--blue { background: var(--blue); color: #fff; }
.btn--blue:hover { background: var(--blue-deep); }

.arrow {
  display: inline-block;
  transition: transform 0.25s var(--ease);
}
.btn:hover .arrow { transform: translateX(4px); }

/* Hero */
.hero {
  position: relative;
  padding: 96px 0 120px;
  overflow: hidden;
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 80px;
  align-items: center;
}
.hero__title {
  font-size: clamp(2.75rem, 5.5vw, 5.5rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
  font-weight: 500;
  margin-bottom: 32px;
}
.hero__title em {
  font-style: normal;
  color: var(--blue);
  font-family: 'Instrument Serif', Georgia, serif;
  font-weight: 400;
  letter-spacing: -0.02em;
}
.hero__desc {
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 54ch;
  margin-bottom: 40px;
}
.hero__ctas { display: flex; gap: 12px; flex-wrap: wrap; }

.hero__side {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.hero__stat {
  padding: 28px;
  background: var(--bg-soft);
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
}
.hero__stat-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  line-height: 1;
  font-weight: 500;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin-bottom: 8px;
}
.hero__stat-num sup { font-size: 0.5em; color: var(--blue); margin-left: 4px; }
.hero__stat-label { font-size: 0.9375rem; color: var(--muted); }

@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; gap: 48px; }
  .hero { padding: 48px 0 80px; }
}

/* Grid / cards */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid--4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .grid--2, .grid--4 { grid-template-columns: 1fr; } }

.card {
  position: relative;
  padding: 32px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: all 0.3s var(--ease);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--ink);
  box-shadow: 0 20px 50px rgba(10, 22, 40, 0.08);
}
.card__num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.08em;
}
.card__title { font-size: 1.25rem; font-weight: 600; }
.card__desc { font-size: 0.9375rem; color: var(--ink-soft); line-height: 1.55; }
.card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  padding-top: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--blue);
}

.card--mission { padding: 40px 32px; }
.card--mission .card__icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: var(--blue-soft);
  color: var(--blue);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
}

/* Stats band */
.stats {
  padding: 64px 0;
  background: var(--bg-dark);
  color: #fff;
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}
.stats__item { }
.stats__num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1;
  color: #fff;
  margin-bottom: 8px;
}
.stats__num sup { font-size: 0.5em; color: #7aa3ff; }
.stats__label {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.6);
}
@media (max-width: 768px) { .stats__grid { grid-template-columns: repeat(2, 1fr); gap: 32px; } }

/* Timeline */
.timeline {
  position: relative;
  padding-left: 40px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 14px;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: var(--line);
}
.timeline__item {
  position: relative;
  padding-bottom: 48px;
}
.timeline__item:last-child { padding-bottom: 0; }
.timeline__item::before {
  content: '';
  position: absolute;
  left: -32px;
  top: 4px;
  width: 13px;
  height: 13px;
  background: var(--bg);
  border: 2px solid var(--blue);
  border-radius: 50%;
}
.timeline__year {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--blue);
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}
.timeline__title { font-size: 1.125rem; font-weight: 600; margin-bottom: 6px; }
.timeline__desc { font-size: 0.9375rem; color: var(--ink-soft); }

/* Reference card */
.ref-card {
  position: relative;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  transition: all 0.3s var(--ease);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.ref-card:hover { border-color: var(--ink); transform: translateY(-3px); box-shadow: 0 16px 40px rgba(10, 22, 40, 0.06); }
.ref-card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}
.ref-card__loc {
  font-size: 0.8125rem;
  color: var(--muted);
  font-weight: 500;
}
.ref-card__name { font-size: 1.25rem; font-weight: 600; line-height: 1.2; }
.ref-card__budget {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
  font-size: 0.875rem;
  padding: 6px 10px;
  background: var(--blue-soft);
  color: var(--blue);
  border-radius: 999px;
  white-space: nowrap;
}
.ref-card__meta {
  display: grid;
  gap: 8px;
  border-top: 1px solid var(--line-soft);
  padding-top: 16px;
}
.ref-card__meta-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  font-size: 0.8125rem;
  gap: 12px;
}
.ref-card__meta-key { color: var(--muted); }
.ref-card__meta-val { color: var(--ink); font-weight: 500; }
.ref-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.ref-card__tag {
  font-size: 0.75rem;
  padding: 4px 10px;
  background: var(--bg-soft);
  color: var(--ink-soft);
  border-radius: 999px;
  font-weight: 500;
}

/* Category chips / tabs */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 40px;
}
.chip {
  padding: 10px 18px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-soft);
  cursor: pointer;
  transition: all 0.2s var(--ease);
}
.chip:hover { border-color: var(--ink); color: var(--ink); }
.chip.is-active { background: var(--ink); color: #fff; border-color: var(--ink); }

/* Team grid */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}
.team-card {
  background: var(--bg-soft);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: all 0.3s var(--ease);
  border: 1px solid transparent;
}
.team-card:hover { background: var(--bg); border-color: var(--line); transform: translateY(-3px); }
.team-card__avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
  font-size: 1.125rem;
  margin-bottom: 16px;
  letter-spacing: 0;
}
.team-card__name {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 4px;
  line-height: 1.2;
}
.team-card__role {
  font-size: 0.875rem;
  color: var(--ink-soft);
  line-height: 1.45;
}

/* Mission detail blocks */
.mission {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 64px;
  padding: 80px 0;
  border-top: 1px solid var(--line);
}
.mission:first-of-type { border-top: none; }
.mission__aside {
  position: sticky;
  top: 100px;
  align-self: start;
}
.mission__num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--blue);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}
.mission__title { font-size: clamp(1.75rem, 2.5vw, 2.5rem); margin-bottom: 20px; }
.mission__kicker { font-size: 1rem; color: var(--ink-soft); max-width: 40ch; }

.mission__blocks { display: grid; gap: 32px; }
.mission__block h3 {
  font-size: 1.125rem;
  margin-bottom: 14px;
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.mission__block h3::before {
  content: counter(block-counter, decimal-leading-zero);
  counter-increment: block-counter;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.75rem;
  color: var(--blue);
  font-weight: 500;
  letter-spacing: 0.08em;
}
.mission__blocks { counter-reset: block-counter; }
.mission__block ul {
  list-style: none;
  display: grid;
  gap: 10px;
}
.mission__block li {
  position: relative;
  padding-left: 24px;
  font-size: 0.9375rem;
  color: var(--ink-soft);
  line-height: 1.5;
}
.mission__block li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 14px;
  height: 1px;
  background: var(--blue);
}

@media (max-width: 900px) {
  .mission { grid-template-columns: 1fr; gap: 40px; padding: 56px 0; }
  .mission__aside { position: static; }
}

/* CTA band */
.cta {
  padding: 96px 0;
}
.cta__box {
  background: var(--bg-dark);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 80px 64px;
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  align-items: center;
  gap: 48px;
  position: relative;
  overflow: hidden;
}
.cta__box::before {
  content: '';
  position: absolute;
  right: -100px;
  top: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(30, 79, 217, 0.35), transparent 70%);
  pointer-events: none;
}
.cta h2 { color: #fff; font-size: clamp(2rem, 3vw, 3rem); margin-bottom: 20px; }
.cta p { color: rgba(255, 255, 255, 0.7); font-size: 1.0625rem; max-width: 48ch; }
.cta .btn--primary { background: #fff; color: var(--ink); position: relative; z-index: 1; }
.cta .btn--primary:hover { background: var(--blue); color: #fff; }
.cta__actions { display: flex; gap: 12px; flex-wrap: wrap; position: relative; z-index: 1; justify-self: end; }

@media (max-width: 900px) {
  .cta__box { grid-template-columns: 1fr; padding: 48px 32px; gap: 32px; }
  .cta__actions { justify-self: start; }
}

/* Footer */
.footer {
  padding: 80px 0 40px;
  background: var(--bg-dark);
  color: #fff;
}
.footer a { color: rgba(255, 255, 255, 0.75); transition: color 0.2s var(--ease); }
.footer a:hover { color: #fff; }
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 56px;
}
.footer h4 {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 20px;
}
.footer ul { list-style: none; display: grid; gap: 10px; }
.footer__logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: #fff;
}
.footer__tagline {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.9375rem;
  max-width: 32ch;
  margin-bottom: 24px;
}
.footer__contact-line {
  display: block;
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.9375rem;
  margin-bottom: 8px;
}
.footer__bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.5);
}
@media (max-width: 800px) { .footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px) { .footer__grid { grid-template-columns: 1fr; } }

/* Page header (for inner pages) */
.page-header {
  padding: 80px 0 64px;
  border-bottom: 1px solid var(--line);
}
.page-header h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  margin-bottom: 24px;
}
.page-header p {
  font-size: 1.125rem;
  max-width: 60ch;
  color: var(--ink-soft);
}

/* Two col content */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 80px;
}
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; gap: 32px; } }

/* Value cards */
.value {
  padding: 40px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.value__icon {
  width: 44px;
  height: 44px;
  background: var(--blue-soft);
  color: var(--blue);
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.value h3 { margin-bottom: 12px; }
.value p { margin-bottom: 16px; }
.value ul { list-style: none; display: grid; gap: 8px; }
.value li {
  position: relative;
  padding-left: 20px;
  font-size: 0.9375rem;
  color: var(--ink-soft);
}
.value li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--blue);
  font-weight: 600;
}

/* Form */
.form {
  display: grid;
  gap: 20px;
  max-width: 560px;
}
.form label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.form input,
.form textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
  color: var(--ink);
  transition: all 0.2s var(--ease);
}
.form input:focus,
.form textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(30, 79, 217, 0.12);
}
.form textarea { resize: vertical; min-height: 140px; }

/* Contact info card */
.contact-card {
  background: var(--bg-soft);
  border-radius: var(--radius);
  padding: 32px;
  display: grid;
  gap: 24px;
}
.contact-card__item {
  display: grid;
  gap: 4px;
}
.contact-card__label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  font-weight: 500;
}
.contact-card__value { font-size: 1.0625rem; font-weight: 500; color: var(--ink); }

/* Utility */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Reveal animation */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(16px);
    animation: reveal 0.8s var(--ease) forwards;
  }
  .reveal[data-delay="1"] { animation-delay: 0.1s; }
  .reveal[data-delay="2"] { animation-delay: 0.2s; }
  .reveal[data-delay="3"] { animation-delay: 0.3s; }
  .reveal[data-delay="4"] { animation-delay: 0.4s; }
}
@keyframes reveal { to { opacity: 1; transform: translateY(0); } }