:root {
  --ink: #17231d;
  --muted: #5e6f67;
  --paper: #f7f5ef;
  --paper-strong: #fffdf7;
  --leaf: #2f6f4e;
  --field: #d7aa3f;
  --water: #2d6c88;
  --clay: #a6583c;
  --line: rgba(23, 35, 29, 0.14);
  --shadow: 0 18px 60px rgba(22, 38, 28, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 54px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  color: #fff;
  background: rgba(23, 35, 29, 0.84);
  backdrop-filter: blur(18px);
}

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

.brand {
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0;
  margin-right: auto;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: var(--ink);
  background: var(--field);
  border-radius: 6px;
}

.nav {
  justify-content: flex-end;
  gap: clamp(12px, 2vw, 28px);
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.94rem;
}

.nav a,
.nav-cta {
  padding: 8px 0;
}

.nav a:hover,
.nav a[aria-current="page"],
.nav-cta:hover,
.site-footer a:hover {
  color: var(--field);
}

.nav-cta {
  color: #fff;
  font-weight: 700;
}

.hero {
  position: relative;
  min-height: 86vh;
  display: grid;
  align-items: center;
  justify-items: center;
  overflow: hidden;
  padding: 112px clamp(20px, 6vw, 84px) 86px;
  color: #fff;
}

.hero-media,
.hero-media img,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(13, 24, 18, 0.88), rgba(13, 24, 18, 0.54) 52%, rgba(13, 24, 18, 0.16)),
    linear-gradient(0deg, rgba(13, 24, 18, 0.72), transparent 42%);
}

.hero-content {
  position: relative;
  width: min(1320px, 90vw);
  text-align: center;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--field);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 1320px;
  margin-bottom: 22px;
  font-size: clamp(3.2rem, 6.2vw, 5.7rem);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 4vw, 3.7rem);
  line-height: 1.03;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 1.18rem;
  line-height: 1.25;
}

.hero-copy {
  max-width: 760px;
  margin-right: auto;
  margin-left: auto;
  color: rgba(255, 255, 255, 0.84);
  font-size: clamp(1.05rem, 2vw, 1.34rem);
}

.hero-actions,
.contact-band {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-actions {
  justify-content: center;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-weight: 800;
}

.button.primary {
  color: var(--ink);
  background: var(--field);
}

.button.secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.42);
  background: rgba(255, 255, 255, 0.08);
}

.section {
  padding: clamp(64px, 9vw, 118px) clamp(20px, 6vw, 84px);
}

.subpage-hero {
  padding: clamp(108px, 15vw, 168px) clamp(20px, 6vw, 84px) clamp(54px, 8vw, 86px);
  color: #fff;
  background:
    linear-gradient(90deg, rgba(18, 34, 25, 0.94), rgba(47, 111, 78, 0.82)),
    url("https://images.unsplash.com/photo-1500382017468-9049fed747ef?auto=format&fit=crop&w=1600&q=80") center / cover;
}

.subpage-hero h1 {
  max-width: 760px;
  margin-bottom: 16px;
}

.subpage-hero p:not(.eyebrow) {
  max-width: 760px;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
}

.split {
  display: grid;
  grid-template-columns: minmax(240px, 0.75fr) minmax(300px, 1.25fr);
  gap: clamp(32px, 7vw, 88px);
  align-items: start;
}

.section-copy {
  color: var(--muted);
  font-size: 1.06rem;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 32px;
}

.cfp-section {
  display: grid;
  grid-template-columns: minmax(280px, 0.62fr) minmax(420px, 1.38fr);
  gap: clamp(30px, 5vw, 68px);
  align-items: start;
}

.topic-grid,
.people-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.topic-grid article,
.person-card,
.organizer-list article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper-strong);
  box-shadow: 0 10px 30px rgba(22, 38, 28, 0.06);
}

.topic-grid article {
  min-height: 118px;
  padding: 22px;
  display: flex;
  align-items: end;
  font-weight: 800;
  line-height: 1.28;
}

.people-section {
  background: #fbfaf6;
}

.people-grid.compact {
  grid-template-columns: repeat(2, minmax(220px, 420px));
}

.person-card {
  padding: 24px;
}

.feature-card {
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: end;
  padding: clamp(28px, 5vw, 46px);
}

.feature-card h2 {
  margin-bottom: 10px;
  font-size: clamp(1.8rem, 3vw, 3rem);
}

.tba-card {
  max-width: 720px;
  min-height: 260px;
  margin: 0 auto;
  text-align: center;
  align-items: center;
}

.person-card p,
.organizer-list p {
  margin-bottom: 0;
  color: var(--muted);
}

.organizer-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.organizer-list article {
  padding: 22px;
}

.contact-band {
  justify-content: space-between;
  margin: 0 clamp(20px, 6vw, 84px) clamp(54px, 7vw, 84px);
  padding: clamp(28px, 5vw, 52px);
  color: #fff;
  background: linear-gradient(135deg, #16231d, #2f6f4e 64%, #846526);
  border-radius: 8px;
}

.contact-band h2 {
  margin-bottom: 8px;
}

.contact-band p:last-child {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.78);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px clamp(20px, 6vw, 84px);
  color: rgba(255, 255, 255, 0.72);
  background: #111a15;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 900px) {
  .site-header {
    flex-wrap: wrap;
  }

  .nav {
    order: 3;
    width: 100%;
    justify-content: flex-end;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .split,
  .cfp-section,
  .organizer-list {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 78vh;
  }
}

@media (max-width: 680px) {
  .site-header {
    gap: 10px;
    padding: 12px 16px;
  }

  .brand {
    font-size: 0.95rem;
  }

  .nav {
    gap: 16px;
    font-size: 0.86rem;
  }

  .nav-cta {
    font-size: 0.9rem;
  }

  .hero {
    padding: 132px 20px 42px;
  }

  h1 {
    font-size: clamp(2.6rem, 15vw, 4.2rem);
  }

  .topic-grid,
  .people-grid,
  .people-grid.compact {
    grid-template-columns: 1fr;
  }

  .topic-grid article {
    min-height: 92px;
  }

  .site-footer {
    display: block;
  }

  .site-footer a {
    display: inline-block;
    margin-top: 10px;
  }
}