:root {
  --blue: #0b77c5;
  --blue-2: #13a9e8;
  --navy: #062b4d;
  --dark: #090d14;
  --black: #05070b;
  --white: #ffffff;
  --soft: #f3f8fc;
  --muted: #647386;
  --line: rgba(11, 119, 197, 0.16);
  --shadow: 0 24px 70px rgba(5, 23, 42, 0.18);
  --radius: 28px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: Inter, system-ui, sans-serif;
  color: var(--dark);
  background: var(--white);
  line-height: 1.65;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin: auto;
}

.topbar {
  background: linear-gradient(90deg, var(--black), var(--navy), var(--blue));
  color: var(--white);
  font-weight: 800;
  font-size: 14px;
  padding: 10px 0;
}

.topbar-inner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.topbar a {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
  transition: 0.25s ease;
}

.site-header.scrolled {
  box-shadow: 0 12px 35px rgba(5, 23, 42, 0.12);
}

.nav {
  height: 94px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-logo {
  width: 118px;
  height: 72px;
  object-fit: contain;
}

.brand span {
  display: grid;
  line-height: 1.15;
}

.brand strong {
  color: var(--navy);
  font-size: 17px;
  font-weight: 900;
  letter-spacing: -0.03em;
}

.brand small {
  color: var(--muted);
  font-weight: 800;
  font-size: 12px;
  margin-top: 4px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: #243142;
  font-weight: 900;
  font-size: 14px;
}

.nav-links a {
  position: relative;
}

.nav-links a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 0;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--blue), var(--blue-2));
  transition: 0.25s;
}

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

.nav-cta,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 999px;
  font-weight: 900;
  cursor: pointer;
  transition: 0.25s ease;
}

.nav-cta {
  padding: 13px 18px;
  background: linear-gradient(135deg, var(--blue), var(--blue-2));
  color: var(--white) !important;
  box-shadow: 0 12px 26px rgba(11, 119, 197, 0.28);
}

.btn {
  padding: 15px 24px;
  min-height: 54px;
}

.btn:hover,
.nav-cta:hover {
  transform: translateY(-3px);
}

.btn.primary {
  background: linear-gradient(135deg, var(--blue), var(--blue-2));
  color: var(--white);
  box-shadow: 0 18px 40px rgba(11, 119, 197, 0.3);
}

.btn.secondary,
.btn.ghost {
  background: rgba(255, 255, 255, 0.14);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(10px);
}

.btn.full {
  width: 100%;
}

.menu-btn {
  display: none;
  width: 48px;
  height: 48px;
  border: 0;
  border-radius: 50%;
  background: var(--navy);
  cursor: pointer;
}

.menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  margin: 5px auto;
}

.hero {
  position: relative;
  min-height: 820px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--black);
  color: var(--white);
}

.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transform: scale(1.08);
  transition: opacity 1.1s ease, transform 7s ease;
}

.hero-slide.active {
  opacity: 1;
  transform: scale(1);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(2, 7, 14, 0.96), rgba(6, 43, 77, 0.82), rgba(4, 25, 45, 0.34)),
    radial-gradient(circle at 76% 18%, rgba(19, 169, 232, 0.42), transparent 36%);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 105px 0;
  max-width: 940px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 12px;
  font-weight: 900;
  color: #bfeeff;
}

.eyebrow::before {
  content: "";
  width: 38px;
  height: 3px;
  border-radius: 999px;
  background: currentColor;
}

.eyebrow.blue {
  color: var(--blue);
}

.eyebrow.light {
  color: #d8f6ff;
}

h1,
h2,
h3 {
  font-family: "Playfair Display", Georgia, serif;
  line-height: 1.06;
}

h1 {
  font-size: clamp(48px, 7vw, 104px);
  letter-spacing: -0.055em;
  max-width: 1000px;
  margin-bottom: 24px;
}

h2 {
  font-size: clamp(36px, 4.5vw, 66px);
  letter-spacing: -0.04em;
  margin-bottom: 18px;
}

h3 {
  font-size: 28px;
}

.hero-text {
  max-width: 720px;
  margin-bottom: 34px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 38px;
}

.hero-card {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  max-width: 860px;
  overflow: hidden;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(14px);
}

.hero-card div {
  padding: 20px;
  border-right: 1px solid rgba(255, 255, 255, 0.18);
}

.hero-card div:last-child {
  border-right: 0;
}

.hero-card strong {
  display: block;
  color: #bfeeff;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.13em;
}

.hero-card span {
  font-weight: 900;
}

.official {
  padding: 28px 0;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

.official-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.65fr 1.2fr 0.9fr;
  gap: 16px;
  align-items: stretch;
}

.official-title span {
  display: inline-flex;
  padding: 8px 13px;
  border-radius: 999px;
  background: #eaf7ff;
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}

.official-box {
  padding: 18px;
  border-radius: 20px;
  background: var(--soft);
  border: 1px solid var(--line);
}

.official-box strong {
  display: block;
  color: var(--blue);
  margin-bottom: 6px;
}

.official-box p {
  color: var(--muted);
  font-weight: 800;
}

.section {
  padding: 105px 0;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: center;
}

.split.reverse {
  grid-template-columns: 0.95fr 1.05fr;
}

.copy p,
.section-head p,
.contact-copy p,
.sponsor-box p {
  color: var(--muted);
  font-size: 17px;
  margin-bottom: 16px;
}

.feature-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.feature-list span {
  padding: 11px 16px;
  border-radius: 999px;
  background: var(--soft);
  border: 1px solid var(--line);
  color: var(--blue);
  font-weight: 900;
}

.image-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.image-card img {
  width: 100%;
  height: 555px;
  object-fit: cover;
}

.float-note {
  position: absolute;
  left: 24px;
  right: 24px;
  bottom: 24px;
  padding: 22px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}

.float-note strong {
  display: block;
  color: var(--blue);
  font-size: 19px;
  margin-bottom: 4px;
}

.float-note span {
  color: var(--muted);
}

.mission-band {
  padding: 86px 0;
  color: var(--white);
  background:
    linear-gradient(135deg, rgba(5, 7, 11, 0.94), rgba(6, 43, 77, 0.92)),
    url("https://images.unsplash.com/photo-1509099836639-18ba1795216d?auto=format&fit=crop&w=1600&q=85") center / cover;
}

.mission-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
}

.mission-grid p {
  color: rgba(255, 255, 255, 0.82);
  font-size: 18px;
}

.projects {
  background: var(--soft);
}

.section-head {
  max-width: 790px;
  text-align: center;
  margin: 0 auto 40px;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.project-card {
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: 0 18px 50px rgba(5, 23, 42, 0.08);
  transition: 0.3s ease;
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
}

.project-card img {
  width: 100%;
  height: 245px;
  object-fit: cover;
}

.project-body {
  padding: 26px;
}

.project-body span {
  display: inline-flex;
  padding: 8px 13px;
  border-radius: 999px;
  background: #eaf7ff;
  color: var(--blue);
  font-weight: 900;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 14px;
}

.project-body p {
  color: var(--muted);
  margin: 12px 0 16px;
}

.project-body a {
  color: var(--blue);
  font-weight: 900;
}

.take-action {
  padding: 96px 0;
  color: var(--white);
  background:
    radial-gradient(circle at 85% 18%, rgba(19, 169, 232, 0.38), transparent 32%),
    linear-gradient(135deg, var(--black), var(--navy));
}

.action-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.action-copy p {
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 28px;
  font-size: 18px;
}

.action-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.action-panel {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.action-panel div {
  padding: 26px 20px;
  text-align: center;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.action-panel strong {
  display: block;
  font-size: 46px;
  line-height: 1;
}

.action-panel span {
  display: block;
  margin-top: 8px;
  color: #d8f6ff;
  font-weight: 900;
}

.steps {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.steps div {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 12px;
  padding: 18px;
  border-radius: 20px;
  background: var(--soft);
  border: 1px solid var(--line);
}

.steps b {
  grid-row: span 2;
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--white);
  background: linear-gradient(135deg, var(--blue), var(--blue-2));
}

.steps span {
  color: var(--muted);
}

.sponsorship {
  background: var(--soft);
}

.sponsor-box {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: center;
  padding: 46px;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 70px;
}

.contact-list {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.contact-list div {
  padding: 18px;
  border-radius: 18px;
  background: var(--soft);
  border: 1px solid var(--line);
}

.contact-list strong {
  display: block;
  color: var(--blue);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}

.contact-list span {
  color: var(--muted);
  font-weight: 800;
}

.contact-form {
  padding: 34px;
  border-radius: var(--radius);
  background: var(--soft);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.contact-form h3 {
  margin-bottom: 20px;
}

.contact-form label {
  display: grid;
  gap: 8px;
  color: var(--navy);
  font-weight: 900;
  margin-bottom: 16px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--white);
  padding: 15px 16px;
  outline: none;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(11, 119, 197, 0.12);
}

.form-note {
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted);
}

.footer {
  background: #0b070c;
  color: var(--white);
  padding: 64px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.7fr 1fr 1fr;
  gap: 56px;
  padding-bottom: 52px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.footer-logo {
  width: 170px;
  height: auto;
  border-radius: 16px;
  margin-bottom: 18px;
  background: var(--white);
  padding: 8px;
}

.footer h3 {
  font-family: Inter, system-ui, sans-serif;
  font-size: 24px;
  line-height: 1.12;
  margin-bottom: 14px;
}

.footer h4 {
  font-size: 17px;
  margin-bottom: 18px;
}

.footer p,
.footer a {
  display: block;
  margin-bottom: 12px;
  color: rgba(255, 255, 255, 0.78);
}

.footer a:hover {
  color: #71d6ff;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-top: 22px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.74);
}

.back-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 50;
  width: 50px;
  height: 50px;
  border: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--blue-2));
  color: var(--white);
  font-weight: 900;
  cursor: pointer;
  box-shadow: var(--shadow);
  display: none;
}

.back-top.show {
  display: block;
}

@media (max-width: 1050px) {
  .menu-btn {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 104px;
    left: 20px;
    right: 20px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 24px;
    border-radius: 24px;
    background: var(--white);
    box-shadow: var(--shadow);
  }

  .nav-links.open {
    display: flex;
  }

  .official-grid,
  .split,
  .mission-grid,
  .action-grid,
  .contact-grid,
  .footer-grid,
  .sponsor-box {
    grid-template-columns: 1fr;
  }

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

  .hero-card,
  .action-panel {
    grid-template-columns: 1fr;
  }

  .hero-card div {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  }
}

@media (max-width: 680px) {
  .container {
    width: min(100% - 28px, 1180px);
  }

  .brand-logo {
    width: 92px;
    height: 58px;
  }

  .brand span {
    display: none;
  }

  .hero {
    min-height: 760px;
  }

  h1 {
    font-size: 48px;
  }

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

  .section {
    padding: 78px 0;
  }

  .image-card img {
    height: 380px;
  }

  .footer-bottom {
    flex-direction: column;
  }
}