:root {
  --color-deep: #063a3f;
  --color-teal: #0e6c6f;
  --color-water: #1d9aa4;
  --color-sky: #dff5f4;
  --color-sand: #f3eadb;
  --color-clay: #b6713a;
  --color-ink: #183238;
  --color-muted: #657579;
  --color-white: #ffffff;
  --shadow-soft: 0 22px 55px rgba(6, 58, 63, 0.13);
  --shadow-card: 0 14px 35px rgba(6, 58, 63, 0.1);
  --radius-large: 30px;
  --radius-medium: 20px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Open Sans", Arial, sans-serif;
  color: var(--color-ink);
  background:
    radial-gradient(circle at top left, rgba(29, 154, 164, 0.14), transparent 34rem),
    linear-gradient(180deg, #f8fbfb 0%, #ffffff 34%, #f7f2e8 100%);
  line-height: 1.7;
}

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

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

p {
  margin-top: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(14, 108, 111, 0.12);
}

.navbar {
  width: min(100% - 2rem, var(--max-width));
  margin: 0 auto;
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: "Montserrat", sans-serif;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-deep);
}

.brand-mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 14px 14px 22px 14px;
  color: var(--color-white);
  background: linear-gradient(145deg, var(--color-teal), var(--color-water));
  box-shadow: 0 9px 18px rgba(14, 108, 111, 0.22);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  color: var(--color-deep);
  font-weight: 700;
  font-size: 0.93rem;
}

.nav-links a {
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.45rem;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--color-water);
  transition: transform 0.2s ease;
}

.nav-links a:hover::after {
  transform: scaleX(1);
}

.menu-button {
  display: none;
  border: 0;
  border-radius: 12px;
  background: var(--color-sky);
  color: var(--color-deep);
  font-size: 1.45rem;
  padding: 0.45rem 0.8rem;
}

.section-shell {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.narrow {
  max-width: 960px;
}

.hero {
  min-height: calc(100vh - 78px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.9fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
  padding: clamp(3.5rem, 8vw, 7rem) 0;
}

.hero-copy {
  position: relative;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  color: var(--color-clay);
  font-family: "Montserrat", sans-serif;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  font-size: 0.78rem;
}

.eyebrow::before {
  content: "";
  width: 38px;
  height: 2px;
  background: currentColor;
}

h1,
h2,
h3 {
  margin-top: 0;
  font-family: "Montserrat", sans-serif;
  color: var(--color-deep);
  line-height: 1.12;
}

h1 {
  max-width: 850px;
  font-size: clamp(2.8rem, 6vw, 5.8rem);
  letter-spacing: -0.07em;
  margin-bottom: 1.35rem;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.4rem);
  letter-spacing: -0.045em;
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.hero-lead,
.section-heading p {
  font-size: 1.1rem;
  color: var(--color-muted);
}

.hero-lead {
  max-width: 680px;
  margin-bottom: 2rem;
}

.hero-actions,
.banner-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0.8rem 1.35rem;
  border-radius: 999px;
  font-weight: 800;
  font-family: "Montserrat", sans-serif;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

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

.btn-primary {
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-teal), var(--color-water));
  box-shadow: 0 12px 26px rgba(14, 108, 111, 0.25);
}

.btn-secondary {
  color: var(--color-deep);
  background: var(--color-white);
  border: 1px solid rgba(14, 108, 111, 0.17);
}

.btn-light {
  color: var(--color-deep);
  background: var(--color-white);
  box-shadow: 0 10px 24px rgba(3, 46, 50, 0.14);
}

.image-placeholder {
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  min-height: 320px;
  border-radius: var(--radius-large);
  color: rgba(255, 255, 255, 0.88);
  font-family: "Montserrat", sans-serif;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background:
    linear-gradient(135deg, rgba(6, 58, 63, 0.9), rgba(29, 154, 164, 0.65)),
    repeating-linear-gradient(135deg, rgba(255,255,255,0.12) 0 1px, transparent 1px 20px);
  box-shadow: var(--shadow-soft);
}

.image-placeholder::before,
.image-placeholder::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.16);
}

.image-placeholder::before {
  width: 170px;
  height: 170px;
  top: -45px;
  right: -35px;
}

.image-placeholder::after {
  width: 260px;
  height: 260px;
  bottom: -110px;
  left: -80px;
}

.image-placeholder span {
  position: relative;
  z-index: 1;
  padding: 0.7rem 1rem;
  border: 1px dashed rgba(255,255,255,0.5);
  border-radius: 999px;
  background: rgba(6, 58, 63, 0.22);
}

.intro,
.objectives,
.participants,
.banner {
  padding: clamp(3.5rem, 8vw, 6.5rem) 0;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 2.5rem;
}

.section-heading.centered {
  margin-inline: auto;
  text-align: center;
}

.section-heading.centered .eyebrow::before {
  display: none;
}

.intro-card {
  padding: clamp(1.4rem, 4vw, 3rem);
  border-radius: var(--radius-large);
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(14, 108, 111, 0.12);
  box-shadow: var(--shadow-card);
}

.intro-card p:last-child {
  margin-bottom: 0;
}

.objective-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.1rem;
}

.objective-card {
  min-height: 290px;
  padding: 1.55rem;
  border-radius: var(--radius-medium);
  background: var(--color-white);
  border: 1px solid rgba(14, 108, 111, 0.12);
  box-shadow: var(--shadow-card);
}

.objective-card:nth-child(even) {
  background: var(--color-sky);
}

.objective-card-wide {
  grid-column: span 2;
  background: linear-gradient(135deg, var(--color-deep), var(--color-teal));
  color: rgba(255, 255, 255, 0.82);
}

.objective-card-wide h3,
.objective-card-wide .objective-number {
  color: var(--color-white);
}

.objective-number {
  display: inline-block;
  margin-bottom: 1.2rem;
  font-family: "Montserrat", sans-serif;
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--color-water);
  line-height: 1;
}

.objective-card p {
  color: var(--color-muted);
  margin-bottom: 0;
}

.objective-card-wide p {
  color: rgba(255, 255, 255, 0.82);
}

.sessions-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.session-card {
  overflow: hidden;
  border-radius: var(--radius-large);
  background: var(--color-white);
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(14, 108, 111, 0.11);
}

.session-image {
  min-height: 270px;
  border-radius: 0;
  box-shadow: none;
}

.session-card:nth-child(2) .session-image {
  background:
    linear-gradient(135deg, rgba(117, 76, 38, 0.9), rgba(29, 154, 164, 0.55)),
    repeating-linear-gradient(135deg, rgba(255,255,255,0.13) 0 1px, transparent 1px 18px);
}

.session-content {
  padding: 2rem;
}

.session-label {
  display: inline-block;
  margin-bottom: 0.75rem;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  color: var(--color-teal);
  background: var(--color-sky);
  font-family: "Montserrat", sans-serif;
  font-weight: 800;
  font-size: 0.78rem;
  text-transform: uppercase;
}

.banner-inner {
  justify-content: space-between;
  padding: clamp(2rem, 5vw, 3.5rem);
  border-radius: var(--radius-large);
  color: rgba(255, 255, 255, 0.86);
  background:
    linear-gradient(135deg, rgba(6, 58, 63, 0.96), rgba(14, 108, 111, 0.88)),
    radial-gradient(circle at right top, rgba(255, 255, 255, 0.18), transparent 24rem);
  box-shadow: var(--shadow-soft);
}

.banner h2,
.banner .eyebrow {
  color: var(--color-white);
}

.banner h2 {
  max-width: 760px;
  margin-bottom: 0;
}

.banner .eyebrow {
  margin-bottom: 0.7rem;
}

.site-footer {
  color: rgba(255, 255, 255, 0.78);
  background: #042b2f;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  padding: 3rem 0;
}

.footer-brand {
  margin-bottom: 1rem;
  color: var(--color-white);
}

.footer-social h2 {
  margin-bottom: 1rem;
  color: var(--color-white);
  font-size: 1.25rem;
}

.footer-social ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin: 0;
  padding: 0;
}

.footer-social a {
  display: inline-flex;
  padding: 0.55rem 0.8rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-white);
}

.footer-social a:hover {
  background: rgba(255, 255, 255, 0.16);
}

@media (max-width: 980px) {
  .hero,
  .sessions-grid,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

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

  .objective-card-wide {
    grid-column: span 2;
  }
}

@media (max-width: 760px) {
  .navbar {
    min-height: 68px;
  }

  .brand-text {
    display: none;
  }

  .menu-button {
    display: inline-flex;
  }

  .nav-links {
    display: none;
  }

  .hero {
    padding-top: 3rem;
  }

  .objective-grid {
    grid-template-columns: 1fr;
  }

  .objective-card,
  .objective-card-wide {
    min-height: unset;
    grid-column: auto;
  }

  .banner-inner {
    align-items: flex-start;
  }
}