:root {
  --aubg: #0b1220;
  --au-navy: #12223b;
  --au-blue: #1f4fa8;
  --au-red: #c62828;
  --au-gold: #f4b41a;
  --au-light: #f5f7fb;
  --au-muted: #7a8499;
  --radius-lg: 14px;
  --radius-md: 10px;
  --shadow-soft: 0 18px 45px rgba(5, 10, 30, 0.35);
  --max-width: 1120px;
}

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

body {
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  background: radial-gradient(
    circle at top,
    #1b2a4a 0,
    #050814 55%,
    #020308 100%
  );
  color: #f9fbff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.shell {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header / Nav */

header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: linear-gradient(
    to bottom,
    rgba(5, 10, 25, 0.96),
    rgba(5, 10, 25, 0.82)
  );
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-mark {
  width: 40px;
  height: 48px;
  border-radius: 10px;
  background: radial-gradient(
    circle at 20% 0,
    #ffffff 0,
    #f4f7ff 12%,
    #1f4fa8 40%,
    #0b1220 100%
  );
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.45);
  position: relative;
  overflow: hidden;
}

.brand-mark::before {
  content: "";
  position: absolute;
  inset: 18% 18%;
  border-radius: 8px;
  border: 2px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 0 0 1px rgba(10, 20, 60, 0.7);
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 40% 24% 14%;
  border-radius: 999px;
  background: linear-gradient(to right, #f4b41a, #ffffff);
  opacity: 0.95;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.brand-title {
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: 0.9rem;
  text-transform: uppercase;
}

.brand-subtitle {
  font-size: 0.78rem;
  color: var(--au-muted);
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.9rem;
}

.nav-links a {
  position: relative;
  color: #e3e8ff;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.25rem;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(to right, var(--au-gold), #ffffff);
  transition: width 0.18s ease-out;
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.btn {
  border-radius: 999px;
  padding: 0.55rem 1.2rem;
  font-size: 0.86rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  transition:
    transform 0.12s ease-out,
    box-shadow 0.12s ease-out,
    background 0.12s ease-out,
    border-color 0.12s ease-out;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--au-blue), #2f6de0);
  border-color: rgba(255, 255, 255, 0.12);
  color: #fdfdff;
  box-shadow: 0 12px 30px rgba(10, 40, 120, 0.6);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 40px rgba(10, 40, 120, 0.75);
}

.btn-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.22);
  color: #e3e8ff;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.4);
}

.nav-toggle {
  display: none;
  border: none;
  background: transparent;
  color: #e3e8ff;
  cursor: pointer;
  padding: 0.25rem;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background: #e3e8ff;
  margin: 4px 0;
}

/* Hero */

.hero {
  padding: 3.5rem 0 3rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 2.5rem;
  align-items: center;
}

.eyebrow {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--au-gold);
  margin-bottom: 0.75rem;
}

.hero-title {
  font-size: clamp(2.2rem, 3.1vw + 1.4rem, 3.1rem);
  line-height: 1.1;
  letter-spacing: 0.02em;
  margin-bottom: 0.9rem;
}

.hero-title span {
  background: linear-gradient(120deg, #ffffff, #f4b41a);
  -webkit-background-clip: text;
  color: transparent;
}

.hero-subtitle {
  font-size: 1rem;
  color: #c0c7e6;
  max-width: 34rem;
  margin-bottom: 1.6rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.4rem;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-size: 0.82rem;
  color: var(--au-muted);
}

.hero-meta strong {
  color: #e3e8ff;
  font-weight: 600;
}

.hero-card {
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 0 0, rgba(244, 180, 26, 0.16), transparent 55%),
    linear-gradient(145deg, rgba(10, 20, 50, 0.96), rgba(5, 10, 25, 0.98));
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-soft);
  padding: 1.4rem 1.4rem 1.2rem;
  position: relative;
  overflow: hidden;
}

.hero-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 120% -10%,
    rgba(47, 109, 224, 0.35),
    transparent 55%
  );
  mix-blend-mode: screen;
  opacity: 0.9;
  pointer-events: none;
}

.hero-card-inner {
  position: relative;
  z-index: 1;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  background: rgba(2, 8, 23, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: #dbe3ff;
  margin-bottom: 0.8rem;
}

.hero-pill-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: #22c55e;
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.25);
}

.hero-card-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.hero-card-sub {
  font-size: 0.86rem;
  color: #c0c7e6;
  margin-bottom: 0.9rem;
}

.hero-values {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem;
  font-size: 0.8rem;
}

.hero-value {
  padding: 0.55rem 0.6rem;
  border-radius: var(--radius-md);
  background: rgba(10, 20, 50, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-value span {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--au-muted);
  margin-bottom: 0.15rem;
}

.hero-value strong {
  font-weight: 600;
}

/* Sections */

main {
  flex: 1;
}

section {
  padding: 2.5rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.section-header {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.6rem;
}

.section-kicker {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--au-muted);
}

.section-title {
  font-size: 1.4rem;
  letter-spacing: 0.04em;
}

.section-lead {
  font-size: 0.96rem;
  color: #c0c7e6;
  max-width: 36rem;
}

/* Values */

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

.value-card {
  border-radius: var(--radius-md);
  background:
    radial-gradient(circle at 0 0, rgba(244, 180, 26, 0.12), transparent 55%),
    linear-gradient(150deg, rgba(10, 20, 50, 0.96), rgba(5, 10, 25, 0.98));
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1rem;
  font-size: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.value-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--au-gold);
}

.value-name {
  font-weight: 600;
}

.value-body {
  color: #c0c7e6;
  font-size: 0.86rem;
}

/* Platform */

.platform-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.4rem;
}

.platform-card {
  border-radius: var(--radius-md);
  background: linear-gradient(
    150deg,
    rgba(10, 20, 50, 0.96),
    rgba(5, 10, 25, 0.98)
  );
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1rem 1.1rem;
  font-size: 0.9rem;
}

.platform-title {
  font-size: 0.98rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.platform-list {
  list-style: none;
  display: grid;
  gap: 0.25rem;
  font-size: 0.86rem;
  color: #c0c7e6;
}

.platform-list li::before {
  content: "•";
  color: var(--au-gold);
  margin-right: 0.4rem;
}

/* Join */

.join-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 1.6rem;
  align-items: center;
}

.join-card {
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 0 0, rgba(244, 180, 26, 0.16), transparent 55%),
    linear-gradient(145deg, rgba(10, 20, 50, 0.96), rgba(5, 10, 25, 0.98));
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1.4rem 1.5rem;
  box-shadow: var(--shadow-soft);
}

.join-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.join-note {
  font-size: 0.82rem;
  color: var(--au-muted);
  margin-top: 0.6rem;
}

.join-form {
  border-radius: var(--radius-md);
  background: rgba(5, 10, 25, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.1rem 1.2rem;
  font-size: 0.86rem;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 0.7rem;
}

label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--au-muted);
}

input,
select,
textarea {
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(2, 6, 23, 0.9);
  color: #e3e8ff;
  padding: 0.55rem 0.8rem;
  font-size: 0.86rem;
  outline: none;
  transition:
    border-color 0.12s ease-out,
    box-shadow 0.12s ease-out,
    background 0.12s ease-out;
}

textarea {
  border-radius: 12px;
  min-height: 80px;
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  border-color: rgba(79, 140, 255, 0.9);
  box-shadow: 0 0 0 1px rgba(79, 140, 255, 0.7);
  background: rgba(2, 6, 23, 1);
}

/* News / Leadership / Chapters */

.simple-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.2rem;
  font-size: 0.88rem;
}

.simple-card {
  border-radius: var(--radius-md);
  background: linear-gradient(
    150deg,
    rgba(10, 20, 50, 0.96),
    rgba(5, 10, 25, 0.98)
  );
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1rem;
  color: #c0c7e6;
}

.simple-card h3 {
  font-size: 0.98rem;
  margin-bottom: 0.4rem;
  color: #e3e8ff;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--au-muted);
  margin-bottom: 0.4rem;
}

/* Contact */

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 1.6rem;
  align-items: flex-start;
}

.contact-card {
  border-radius: var(--radius-md);
  background: linear-gradient(
    150deg,
    rgba(10, 20, 50, 0.96),
    rgba(5, 10, 25, 0.98)
  );
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.2rem 1.3rem;
  font-size: 0.88rem;
  color: #c0c7e6;
}

.contact-meta {
  font-size: 0.82rem;
  color: var(--au-muted);
  margin-top: 0.6rem;
}

/* Footer */

footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.4rem 0 1.6rem;
  font-size: 0.8rem;
  color: var(--au-muted);
  background: radial-gradient(
    circle at 50% -40%,
    rgba(47, 109, 224, 0.35),
    transparent 60%
  );
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.6rem;
  align-items: center;
  justify-content: space-between;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.footer-links a {
  color: var(--au-muted);
}

.footer-links a:hover {
  color: #e3e8ff;
}

/* Responsive */

@media (max-width: 960px) {
  .hero-grid,
  .platform-grid,
  .join-grid,
  .simple-grid,
  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .values-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .nav-links,
  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .hero {
    padding-top: 2.4rem;
  }

  .values-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  section {
    padding: 2rem 0;
  }
}

@media (max-width: 520px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}