:root {
  --bg: #08110e;
  --bg-soft: #edf2e6;
  --surface: rgba(245, 248, 241, 0.8);
  --surface-strong: rgba(247, 250, 244, 0.92);
  --text: #eff5eb;
  --text-dark: #14231b;
  --muted: rgba(239, 245, 235, 0.72);
  --muted-dark: #53695b;
  --line: rgba(255, 255, 255, 0.12);
  --line-dark: rgba(20, 35, 27, 0.1);
  --moss: #7db392;
  --forest: #174636;
  --ocean: #0f5c73;
  --glow: rgba(176, 225, 197, 0.2);
  --shadow: 0 30px 90px rgba(3, 11, 9, 0.24);
  --radius-xl: 36px;
  --radius-lg: 26px;
  --radius-md: 18px;
  --page-width: 1180px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-snap-type: y proximity;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: "Manrope", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(52, 108, 86, 0.24), transparent 26%),
    linear-gradient(180deg, #08110e 0%, #06110d 38%, #0d1713 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(transparent 0%, rgba(0, 0, 0, 0.08) 100%),
    radial-gradient(circle at 20% 20%, rgba(164, 212, 181, 0.08), transparent 22%),
    radial-gradient(circle at 80% 0%, rgba(58, 118, 150, 0.08), transparent 24%);
  z-index: -1;
}

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

button,
video {
  font: inherit;
}

button {
  cursor: pointer;
}

main > section,
.scene,
.hero {
  scroll-snap-align: start;
}

.chapter-rail {
  position: fixed;
  top: 50%;
  right: 1.5rem;
  z-index: 22;
  display: grid;
  gap: 0.75rem;
  transform: translateY(-50%);
}

.chapter-rail a {
  display: grid;
  gap: 0.08rem;
  min-width: 8.75rem;
  padding: 0.85rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  color: rgba(239, 245, 235, 0.56);
  background: rgba(8, 17, 14, 0.32);
  backdrop-filter: blur(14px);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    color 180ms ease,
    background-color 180ms ease;
}

.chapter-rail a span {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.chapter-rail a.is-active {
  color: #f6fbf4;
  border-color: rgba(176, 225, 197, 0.42);
  background: rgba(24, 52, 42, 0.56);
  transform: translateX(-0.25rem);
}

.hero,
.scene,
.manifesto,
.practical-section {
  min-height: 100vh;
  min-height: 100dvh;
}

.hero,
.scene {
  position: relative;
  overflow: clip;
}

.hero-video,
.scene-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-video-shell {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-fallback-video {
  display: none;
  transform: scale(1.05);
}

.hero-youtube {
  top: 50%;
  left: 50%;
  width: max(100vw, 177.78vh);
  height: max(56.25vw, 100vh);
  border: 0;
  pointer-events: none;
  transform: translate(-50%, -50%) scale(1.10);
}

body.hero-file-fallback .hero-youtube {
  display: none;
}

body.hero-file-fallback .hero-fallback-video {
  display: block;
}

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

.hero-overlay {
  background:
    linear-gradient(180deg, rgba(3, 10, 9, 0.26), rgba(3, 10, 9, 0.72)),
    radial-gradient(circle at 30% 20%, rgba(149, 208, 177, 0.18), transparent 22%);
}

.hero-content,
.scene-content,
.manifesto,
.site-footer {
  width: min(calc(100% - 2rem), var(--page-width));
  margin: 0 auto;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  align-content: end;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 8rem 0 7rem;
}

.eyebrow,
.scene-label,
.card-number {
  margin: 0;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow {
  color: rgba(239, 245, 235, 0.72);
}

.hero h1,
.manifesto h2,
.scene h2,
.section-heading h2,
.counter-number {
  margin: 0;
  font-family: "Cormorant Garamond", serif;
  line-height: 0.94;
  letter-spacing: -0.035em;
}

.hero h1 {
  max-width: 9ch;
  margin-top: 1rem;
  font-size: clamp(4rem, 10vw, 8rem);
  text-wrap: balance;
}

.hero-copy {
  max-width: 36rem;
  margin: 1.6rem 0 0;
  color: rgba(239, 245, 235, 0.88);
  font-size: clamp(1.08rem, 2.3vw, 1.35rem);
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2.25rem;
}

.button,
.share-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.35rem;
  padding: 0.92rem 1.4rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.96rem;
  font-weight: 700;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background-color 180ms ease,
    box-shadow 180ms ease;
}

.button:hover,
.button:focus-visible,
.share-button:hover,
.share-button:focus-visible,
.chapter-rail a:hover,
.chapter-rail a:focus-visible {
  transform: translateY(-1px);
}

.button-primary {
  color: #f0f6ec;
  background: linear-gradient(135deg, #2e7b61 0%, #18483a 100%);
  box-shadow: 0 22px 42px rgba(15, 76, 58, 0.28);
}

.button-secondary {
  color: #eff5eb;
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
}

.scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 2rem;
  z-index: 2;
  color: rgba(239, 245, 235, 0.68);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transform: translateX(-50%);
}

.scroll-cue::after {
  content: "";
  display: block;
  width: 1px;
  height: 3rem;
  margin: 0.8rem auto 0;
  background: linear-gradient(rgba(239, 245, 235, 0.7), transparent);
  animation: drift 1.7s ease-in-out infinite;
}

.manifesto {
  display: grid;
  min-height: 100svh;
  min-height: 100dvh;
  place-content: center;
  padding: 8rem 0;
  text-align: center;
}

.manifesto h2 {
  max-width: 14ch;
  margin: 1rem auto 0;
  font-size: clamp(3rem, 7vw, 5.5rem);
  text-wrap: balance;
}

.manifesto p:last-child {
  max-width: 44rem;
  margin: 1.5rem auto 0;
  color: rgba(239, 245, 235, 0.76);
  font-size: 1.08rem;
  line-height: 1.9;
}

.scene {
  display: grid;
  align-items: end;
}

.scene-media {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 20%, rgba(190, 232, 204, 0.14), transparent 20%),
    linear-gradient(180deg, rgba(8, 17, 14, 0.14), rgba(8, 17, 14, 0.2)),
    var(--scene-fallback, linear-gradient(180deg, #163126, #09130f));
}

.scene-media::after {
  content: "";
  background:
    linear-gradient(180deg, rgba(3, 10, 9, 0.14), rgba(3, 10, 9, 0.72)),
    linear-gradient(90deg, rgba(3, 10, 9, 0.48), rgba(3, 10, 9, 0.05) 55%);
}

.scene-content {
  position: relative;
  z-index: 1;
  padding-bottom: 7rem;
}

.scene-label {
  color: rgba(214, 240, 221, 0.8);
}

.scene h2 {
  max-width: 11ch;
  margin-top: 0.75rem;
  font-size: clamp(3.2rem, 8vw, 6.2rem);
  text-wrap: balance;
}

.scene p:last-child {
  max-width: 34rem;
  margin: 1rem 0 0;
  color: rgba(239, 245, 235, 0.82);
  font-size: 1.05rem;
  line-height: 1.8;
}

.scene-forest {
  --scene-fallback: linear-gradient(180deg, #1d4334 0%, #0a110d 100%);
}

.scene-ocean {
  --scene-fallback: linear-gradient(180deg, #11384e 0%, #07131a 100%);
}

.scene-wildlife {
  --scene-fallback: linear-gradient(180deg, #4f311a 0%, #120d08 100%);
}

.scene-planet {
  --scene-fallback: linear-gradient(180deg, #102739 0%, #050a12 100%);
}

.practical-section {
  display: grid;
  align-content: center;
  width: 100%;
  padding: 7rem max(1rem, calc((100% - var(--page-width)) / 2));
}

.practical-section-light {
  color: var(--text-dark);
  background:
    radial-gradient(circle at top left, rgba(125, 179, 146, 0.12), transparent 20%),
    linear-gradient(180deg, #edf2e6 0%, #f6f8f1 100%);
}

.practical-section-dark {
  background:
    radial-gradient(circle at top right, rgba(117, 176, 150, 0.1), transparent 22%),
    linear-gradient(180deg, #07110e 0%, #0d1713 100%);
}

.section-heading {
  max-width: 40rem;
}

.practical-section-light .eyebrow {
  color: #315e4a;
}

.practical-section-light .section-heading p:last-child,
.practical-section-dark .section-heading p:last-child {
  margin: 1rem 0 0;
  line-height: 1.8;
}

.practical-section-light .section-heading p:last-child {
  color: var(--muted-dark);
}

.practical-section-dark .section-heading p:last-child {
  color: var(--muted);
}

.section-heading h2 {
  margin-top: 0.8rem;
  font-size: clamp(2.8rem, 6vw, 4.8rem);
}

.celebrate-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1.1rem;
  margin-top: 2rem;
}

.celebrate-card,
.counter-card,
.share-panel {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.celebrate-card {
  padding: 1.5rem;
  border: 1px solid var(--line-dark);
  background: var(--surface-strong);
}

.card-number {
  color: #3c6d57;
}

.celebrate-card h3 {
  margin: 0.9rem 0 0;
  font-family: "Cormorant Garamond", serif;
  font-size: 1.9rem;
  line-height: 1;
}

.celebrate-card p {
  margin: 0.75rem 0 0;
  color: var(--muted-dark);
  line-height: 1.75;
}

.counter-section {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 2rem;
  align-items: center;
}

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

.counter-card {
  padding: 2rem;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02)),
    rgba(8, 17, 14, 0.52);
  backdrop-filter: blur(18px);
}

.counter-number {
  display: block;
  font-size: clamp(3.5rem, 8vw, 5.25rem);
}

.counter-label {
  display: inline-block;
  margin-top: 0.9rem;
  color: rgba(239, 245, 235, 0.72);
  font-weight: 700;
}

.share-section {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 1.5rem;
  align-items: start;
}

.share-copy p:last-of-type {
  color: var(--muted-dark);
  line-height: 1.85;
}

.share-quote {
  margin-top: 1.6rem;
  padding: 1.35rem 1.4rem;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-md);
  background: rgba(125, 179, 146, 0.1);
}

.share-quote span {
  display: block;
  color: #335f4c;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.share-quote blockquote {
  margin: 0.85rem 0 0;
  color: var(--text-dark);
  font-size: 1.1rem;
  line-height: 1.8;
}

.share-panel {
  padding: 2rem;
  border: 1px solid var(--line-dark);
  background: rgba(255, 255, 255, 0.72);
}

.share-buttons {
  display: grid;
  gap: 0.9rem;
}

.share-button {
  justify-content: flex-start;
  color: var(--text-dark);
  border-color: rgba(20, 35, 27, 0.1);
  background: rgba(247, 250, 244, 0.95);
}

.share-feedback {
  min-height: 1.4rem;
  margin: 1rem 0 0;
  color: #2f5f4b;
  font-size: 0.95rem;
  font-weight: 700;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem 2rem;
  padding: 2rem 0 3rem;
  color: rgba(239, 245, 235, 0.68);
}

.site-footer p {
  max-width: 34rem;
  margin: 0;
  line-height: 1.8;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.footer-links a {
  color: #d7efe0;
  font-weight: 700;
}

.hero-content,
.manifesto,
.scene-content,
.celebrate-card,
.counter-card,
.share-copy,
.share-panel {
  animation: rise-in 700ms ease both;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(26px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes drift {

  0%,
  100% {
    transform: translateY(0);
    opacity: 0.45;
  }

  50% {
    transform: translateY(10px);
    opacity: 1;
  }
}

@media (max-width: 1120px) {
  .chapter-rail {
    display: none;
  }

  .celebrate-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .scroll-cue {
    display: none;
  }

  .hero-content {
    padding: 7rem 0 5rem;
  }

  .counter-section,
  .share-section {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 720px) {
  html {
    scroll-snap-type: none;
  }

  .hero-content,
  .scene-content,
  .manifesto,
  .site-footer {
    width: min(calc(100% - 1rem), var(--page-width));
  }

  .hero h1 {
    max-width: 8ch;
    font-size: clamp(3.6rem, 16vw, 5.2rem);
  }

  .manifesto {
    padding: 5rem 0;
  }

  .manifesto h2,
  .scene h2,
  .section-heading h2 {
    text-wrap: balance;
  }

  .scene-content {
    padding-bottom: 4rem;
  }

  .hero-actions,
  .counter-grid,
  .footer-links {
    display: grid;
  }

  .hero-actions,
  .counter-grid {
    grid-template-columns: 1fr;
  }

  .button,
  .share-button {
    width: 100%;
  }

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

  .share-panel,
  .counter-card,
  .celebrate-card {
    padding: 1.4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .hero-video,
  .hero-video-shell,
  .hero-youtube,
  .scene-video {
    display: none;
  }
}