:root {
  --navy: #071427;
  --orange: #f28a22;
  --orange-2: #ffb15c;
  --white: #ffffff;
  --muted: #b9c5d8;
  --line: rgba(255, 255, 255, 0.14);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  --radius: 26px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--white);
  background:
    radial-gradient(circle at 10% 0%, rgba(242, 138, 34, 0.24), transparent 28rem),
    radial-gradient(circle at 90% 10%, rgba(0, 111, 255, 0.2), transparent 30rem),
    linear-gradient(180deg, #061120 0%, #071427 42%, #050b15 100%);
  line-height: 1.6;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 1rem clamp(1rem, 4vw, 4rem);
  background: rgba(7, 20, 39, 0.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}

.brand { display: inline-flex; align-items: center; }

.brand-logo {
  width: clamp(190px, 26vw, 300px);
  height: auto;
  display: block;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  color: var(--muted);
  font-weight: 700;
  font-size: 0.96rem;
}

.nav a:hover { color: var(--orange-2); }

.menu-toggle {
  display: none;
  width: 2.6rem;
  height: 2.6rem;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.04);
  border-radius: 0.8rem;
}

.menu-toggle span {
  display: block;
  height: 2px;
  width: 1.2rem;
  margin: 0.28rem auto;
  background: var(--white);
}

.section {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 4rem);
  min-height: calc(100vh - 78px);
}

.eyebrow,
.section-label {
  color: var(--orange-2);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 900;
  margin-bottom: 1rem;
}

h1, h2, h3, p { margin-top: 0; }

h1 {
  font-size: clamp(3rem, 8vw, 6.4rem);
  line-height: 0.9;
  letter-spacing: -0.07em;
  margin-bottom: 1.4rem;
  max-width: 11ch;
}

h2 {
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1;
  letter-spacing: -0.045em;
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.35rem;
  line-height: 1.15;
  margin-bottom: 0.75rem;
}

.hero-copy {
  max-width: 670px;
  font-size: clamp(1.05rem, 2vw, 1.32rem);
  color: #e7edf7;
}

.muted, .form-note { color: var(--muted); }

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.95rem 1.35rem;
  font-weight: 900;
  transition: transform 180ms ease;
}

.button:hover { transform: translateY(-2px); }

.button.primary {
  color: #140b03;
  background: linear-gradient(135deg, var(--orange), var(--orange-2));
}

.button.secondary {
  border: 1px solid rgba(255,255,255,0.22);
  color: var(--white);
  background: rgba(255,255,255,0.05);
}

.hero-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 4vw, 2.2rem);
  background:
    linear-gradient(150deg, rgba(255,255,255,0.11), rgba(255,255,255,0.03)),
    rgba(13, 32, 58, 0.7);
  box-shadow: var(--shadow);
}

.hero-card::before {
  content: "";
  position: absolute;
  inset: auto -20% -35% auto;
  width: 18rem;
  height: 18rem;
  border-radius: 50%;
  background: rgba(242, 138, 34, 0.26);
  filter: blur(20px);
}

.hero-logo {
  width: min(100%, 390px);
  height: auto;
  display: block;
  margin-bottom: 1.5rem;
}

.hero-card h2 { font-size: clamp(2rem, 4vw, 3.2rem); }
.hero-card a, .text-link { color: var(--orange-2); font-weight: 900; }

.intro {
  text-align: center;
  max-width: 860px;
}

.intro p {
  color: var(--muted);
  font-size: 1.15rem;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.7rem;
}

.topic-grid { display: grid; gap: 1rem; grid-template-columns: repeat(5, minmax(0, 1fr)); }

.topic-card {
  border: 1px solid var(--line);
  border-radius: 1.4rem;
  padding: 1.2rem;
  background: rgba(255,255,255,0.045);
  transition: transform 180ms ease, border-color 180ms ease;
}

.topic-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 177, 92, 0.45);
}

.topic-card p { color: var(--muted); }

.image-topics .topic-card {
  position: relative;
  min-height: 360px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  isolation: isolate;
  background-color: rgba(255,255,255,0.045);
}

.image-topics .topic-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background-size: cover;
  background-position: center;
  transform: scale(1.03);
  opacity: 0.5;
}

.image-topics .topic-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(5, 11, 21, 0.22), rgba(5, 11, 21, 0.92) 68%),
    linear-gradient(135deg, rgba(242, 138, 34, 0.18), rgba(7, 20, 39, 0.25));
}

.topic-history::before {
  background-image: url("https://commons.wikimedia.org/wiki/Special:FilePath/Colosseum_of_Rome_and_Roman_forum.jpg?width=1000");
}

.topic-mysteries::before {
  background-image: url("https://commons.wikimedia.org/wiki/Special:FilePath/Stonehenge_(4806621).jpg?width=1000");
}

.topic-religion::before {
  background-image: url("https://commons.wikimedia.org/wiki/Special:FilePath/Genesis_1_Dead_Sea_Scroll.jpg?width=1000");
}

.topic-psychology::before {
  background-image: url("https://commons.wikimedia.org/wiki/Special:FilePath/Human_brain.png?width=1000");
}

.topic-sports::before {
  background-image: url("https://commons.wikimedia.org/wiki/Special:FilePath/Soccer_ball_on_ground.jpg?width=1000");
}

.topic-card span { color: var(--orange); font-weight: 950; }
.topic-card h3 { text-shadow: 0 2px 12px rgba(0,0,0,0.65); }
.topic-card strong { color: var(--orange-2); margin-top: 0.7rem; display: inline-block; }

.careers-box, .updates-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2rem;
  align-items: center;
  border: 1px solid rgba(242, 138, 34, 0.28);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  background:
    linear-gradient(135deg, rgba(242, 138, 34, 0.14), rgba(255,255,255,0.04)),
    rgba(13, 32, 58, 0.66);
  box-shadow: var(--shadow);
}

.updates-panel { grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1fr); }

.signup label {
  display: block;
  font-weight: 900;
  margin-bottom: 0.55rem;
}

.signup-row { display: flex; gap: 0.7rem; }

.signup input {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255,255,255,0.07);
  color: var(--white);
  padding: 0.95rem 1rem;
  font: inherit;
}

.signup input::placeholder { color: #8c9bb1; }
.form-note { margin-top: 0.75rem; margin-bottom: 0; font-size: 0.9rem; }

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.5rem;
  align-items: center;
  padding: 2rem clamp(1rem, 4vw, 4rem);
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.footer-logo {
  width: 190px;
  max-width: 100%;
  height: auto;
}

.footer-links { display: flex; gap: 1rem; font-weight: 900; }
.footer-links a:hover { color: var(--orange-2); }
.copyright { grid-column: 1 / -1; margin: 0; font-size: 0.9rem; }

@media (max-width: 1100px) {
  .topic-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 880px) {
  .menu-toggle { display: block; }

  .nav {
    position: absolute;
    top: 100%;
    left: 1rem;
    right: 1rem;
    display: none;
    flex-direction: column;
    align-items: start;
    padding: 1rem;
    border: 1px solid var(--line);
    border-radius: 1rem;
    background: rgba(7, 20, 39, 0.98);
  }

  .nav.open { display: flex; }

  .hero, .updates-panel, .careers-box { grid-template-columns: 1fr; }
  .topic-grid { grid-template-columns: 1fr; }
  .section-heading, .site-footer, .signup-row { display: grid; grid-template-columns: 1fr; }

  h1 { max-width: 12ch; }

  .brand-logo { width: 200px; }

  .image-topics .topic-card { min-height: 330px; }
}

.hidden-field { display: none; }