@font-face {
  font-family: "Nunito Sans Variable";
  font-style: normal;
  font-display: swap;
  font-weight: 200 1000;
  src: url("../fonts/nunito-sans-latin-wght-normal.woff2") format("woff2-variations");
}

:root {
  --nina-lime: #A7C957;
  --nina-sage: #6E8F65;
  --nina-sage-text: #587353;
  --nina-ivory: #F7F5EA;
  --nina-cream: #EADCC9;
  --nina-sand: #C9B38F;
  --nina-ink: #0B4F45;
  --nina-brown: #4A2A24;
  --nina-danger: #9E2A2B;
  --nina-white: #FFFEFA;
  --nina-soft-green: #EDF2E3;
  --nina-danger-soft: #FBE9E7;
  --page: var(--nina-ivory);
  --surface: var(--nina-white);
  --surface-soft: var(--nina-soft-green);
  --surface-warm: var(--nina-cream);
  --text: var(--nina-ink);
  --text-soft: var(--nina-brown);
  --label: var(--nina-sage-text);
  --line: rgb(11 79 69 / 0.16);
  --button: var(--nina-ink);
  --button-text: var(--nina-white);
  --danger-surface: var(--nina-danger-soft);
  --danger-text: #722325;
  --header: rgb(247 245 234 / 0.9);
  --shadow: 0 1.5rem 4rem rgb(11 79 69 / 0.12);
  --content-width: 76rem;
  --radius-card: 1.125rem;
  color-scheme: light dark;
  color: var(--text);
  background: var(--page);
  font-family: "Nunito Sans Variable", "Segoe UI", system-ui, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
}

body {
  margin: 0;
  overflow-x: clip;
  background: var(--page);
  color: var(--text);
  font-size: 1.0625rem;
  line-height: 1.6;
}

::selection { background: var(--nina-lime); color: var(--nina-ink); }
* { scrollbar-color: var(--nina-sage) var(--page); }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
a, button { min-height: 44px; }
h1, h2, h3, p { margin-block-start: 0; }
h1, h2, h3 { text-wrap: balance; }
p { text-wrap: pretty; }

h1 {
  margin-bottom: 1.4rem;
  max-width: 13ch;
  font-size: clamp(3.25rem, 5.25vw, 4.8rem);
  font-weight: 830;
  letter-spacing: -0.055em;
  line-height: 0.95;
}

h2 {
  margin-bottom: 1rem;
  max-width: 18ch;
  font-size: clamp(2.45rem, 4vw, 4rem);
  font-weight: 810;
  letter-spacing: -0.05em;
  line-height: 0.98;
}

h3 {
  margin-bottom: 0.5rem;
  font-size: clamp(1.25rem, 2vw, 1.6rem);
  font-weight: 780;
  letter-spacing: -0.025em;
  line-height: 1.12;
}

:focus-visible { outline: 3px solid var(--nina-ink); outline-offset: 4px; }

.skip-link {
  position: fixed;
  z-index: 40;
  top: 0.5rem;
  left: 0.5rem;
  padding: 0.75rem 1rem;
  transform: translateY(-160%);
  border-radius: 0.625rem;
  background: var(--button);
  color: var(--button-text);
}

.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid var(--line);
  background: var(--header);
  backdrop-filter: blur(1rem);
}

.site-header__inner,
.hero,
.role-strip,
.section,
.final-cta,
.unavailable,
.site-footer {
  width: min(calc(100% - 2.5rem), var(--content-width));
  margin-inline: auto;
}

.site-header__inner {
  min-height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  min-height: 44px;
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  text-decoration: none;
}

.brand__name { font-size: 1.85rem; font-weight: 900; letter-spacing: -0.06em; }
.brand__institution { color: var(--text-soft); font-size: 0.82rem; font-weight: 680; }

.button {
  min-height: 3.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.55rem;
  border: 1.5px solid var(--button);
  border-radius: 999px;
  background: transparent;
  color: var(--text);
  font-weight: 800;
  line-height: 1.15;
  text-align: center;
  text-decoration: none;
  transition: transform 180ms ease, background-color 180ms ease, color 180ms ease;
}
.whatsapp-icon { width: 1.2rem; height: 1.2rem; flex: 0 0 auto; fill: currentColor; }
.button, .mobile-cta { gap: 0.55rem; }

.button:hover { background: var(--surface-soft); }
.button:active { transform: translateY(1px) scale(0.99); }
.button--primary { background: var(--button); color: var(--button-text); }
.button--primary:hover { background: var(--nina-sage); color: #FFFFFF; }
.button--compact { min-height: 44px; padding-inline: 1.1rem; font-size: 0.92rem; }

.hero {
  min-height: min(46rem, calc(100dvh - 4.5rem));
  padding-block: clamp(3rem, 6vw, 5.75rem);
  display: grid;
  grid-template-columns: minmax(0, 8fr) minmax(19rem, 4fr);
  align-items: center;
  gap: clamp(3rem, 7vw, 6.5rem);
}

.hero h1 { max-width: none; font-size: clamp(3.25rem, 3.9vw, 3.55rem); }

.hero__copy { position: relative; z-index: 1; }
.hero__copy::after {
  position: absolute;
  z-index: -1;
  right: 8%;
  bottom: -2rem;
  width: 7rem;
  height: 0.5rem;
  content: "";
  background: var(--nina-lime);
}

.eyebrow {
  margin-bottom: 1.15rem;
  color: var(--label);
  font-size: 0.92rem;
  font-weight: 800;
}

.hero__lead {
  max-width: 34rem;
  margin-bottom: 1.8rem;
  color: var(--text-soft);
  font-size: clamp(1.1rem, 1.8vw, 1.3rem);
  line-height: 1.5;
}


.hero__visual {
  position: relative;
  width: min(100%, 25rem);
  margin: 0 auto;
}

.hero__visual::before { content: none; }

.hero__image-frame {
  position: relative;
  overflow: visible;
  aspect-ratio: 2 / 3;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.hero__image-frame img { width: 100%; height: 100%; object-fit: contain; object-position: center; }

.role-strip {
  padding-block: clamp(1.5rem, 3vw, 2rem);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.role-strip p { max-width: 60rem; margin: 0; display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 2rem; }
.role-strip strong { font-size: 1.08rem; line-height: 1.35; }
.section { padding-block: clamp(5.5rem, 10vw, 9rem); }
.section-heading { max-width: 50rem; margin-bottom: clamp(2.5rem, 5vw, 4.5rem); }
.section-heading p, .about p, .safety__copy p { max-width: 60ch; color: var(--text-soft); }

.topics__grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-auto-rows: 11rem;
  grid-auto-flow: dense;
  gap: 0.85rem;
}

.topic {
  min-width: 0;
  padding: 1.5rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--surface);
}

.topic p { margin: 0; color: var(--text-soft); font-size: 0.96rem; line-height: 1.45; }
.topic--main { grid-column: span 6; grid-row: span 2; display: grid; grid-template-columns: 1.25fr 0.75fr; align-items: center; gap: 1.25rem; background: var(--surface-soft); }
.topic--main h3 { max-width: 10ch; font-size: clamp(2rem, 3.3vw, 3.25rem); }
.topic--main img { width: 100%; align-self: center; border-radius: 0; background: transparent; }
.topic:not(.topic--main, .topic--climate) { grid-column: span 3; }
.topic--water { background: var(--surface-warm); }
.topic--climate { grid-column: span 6; grid-row: span 2; min-height: 22rem; padding: 0; display: grid; grid-template-columns: minmax(10rem, 0.9fr) minmax(0, 1.1fr); align-items: center; }
.topic--climate img { width: 100%; height: 100%; min-height: 0; object-fit: contain; object-position: center; }
.topic--drinking img { object-fit: contain; object-position: center; }
.topic--climate div { padding: 1.1rem 1.2rem 1.25rem; }

.how { display: grid; grid-template-columns: minmax(16rem, 0.82fr) minmax(20rem, 1.18fr); gap: clamp(3rem, 8vw, 7rem); }
.how .section-heading { position: sticky; top: 7rem; align-self: start; margin-bottom: 0; }
.steps { margin: 0; padding: 0; list-style: none; }
.steps li {
  min-height: 11rem;
  padding: clamp(1.75rem, 4vw, 2.75rem) 0;
  display: grid;
  grid-template-columns: 4.25rem 1fr;
  align-content: center;
  column-gap: 1rem;
  border-top: 1px solid var(--line);
}
.steps li:last-child { border-bottom: 1px solid var(--line); }
.steps span { grid-row: span 2; color: var(--label); font-size: 2.8rem; font-weight: 350; letter-spacing: -0.06em; line-height: 0.9; }
.steps h3, .steps p { grid-column: 2; }
.steps p { margin: 0; color: var(--text-soft); }

.safety {
  padding: clamp(2rem, 5vw, 4rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(20rem, 0.85fr);
  align-items: center;
  gap: clamp(2rem, 7vw, 6rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--surface-soft);
}

.emergency { padding: clamp(1.5rem, 4vw, 2.5rem); border-radius: var(--radius-card); background: var(--danger-surface); color: var(--danger-text); }
.emergency p { margin-bottom: 1.25rem; }
.emergency__call { min-height: 44px; display: inline-flex; align-items: center; color: var(--danger-text); font-weight: 800; text-underline-offset: 0.2em; }
.emergency__call strong { margin-left: 0.35rem; font-size: 1.45rem; }

.about { display: grid; grid-template-columns: 8rem minmax(0, 1fr); align-items: start; gap: clamp(2rem, 5vw, 4rem); }
.about__logo { width: 7rem; height: auto; align-self: center; }

.final-cta {
  margin-bottom: 4.5rem;
  padding: clamp(2.25rem, 5vw, 4.25rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 2rem;
  border-radius: var(--radius-card);
  background: var(--nina-lime);
  color: var(--nina-ink);
}
.final-cta h2 { margin-bottom: 0.65rem; font-size: clamp(2.35rem, 4vw, 3.8rem); }
.final-cta p { margin: 0; color: var(--nina-brown); }
.final-cta .button { flex: 0 0 auto; background: var(--nina-ink); color: #FFFFFF; }

.unavailable { display: none; margin-bottom: 3rem; padding: 1.5rem; border: 2px solid var(--nina-sand); border-radius: var(--radius-card); background: var(--surface); }
.unavailable:target, .unavailable.is-visible { display: block; }
.unavailable h2 { margin-bottom: 0.5rem; font-size: 1.5rem; }
.unavailable p, .noscript { margin: 0; }
.noscript { width: min(calc(100% - 2rem), var(--content-width)); margin: 0 auto 2rem; padding: 1rem; background: var(--surface-warm); }

.site-footer {
  padding-block: 2rem 2.5rem;
  display: grid;
  grid-template-columns: minmax(12rem, 1.3fr) minmax(8rem, 0.8fr) minmax(11rem, 1fr) minmax(10rem, 1fr);
  gap: 1.25rem;
  border-top: 1px solid var(--line);
  color: var(--text-soft);
  font-size: 0.92rem;
}
.site-footer p { margin-bottom: 0.4rem; }
.site-footer nav { display: flex; flex-wrap: wrap; align-content: start; align-items: center; gap: 0 0.75rem; }
.site-footer a { min-height: 44px; display: inline-flex; align-items: center; }

.mobile-cta { display: none; }

.legal-page { width: min(calc(100% - 2rem), 48rem); min-height: calc(100dvh - 4.5rem); margin-inline: auto; padding-block: clamp(3.5rem, 8vw, 7rem); }
.legal-page__label, .error-page__label { margin-bottom: 0.75rem; color: var(--label); font-size: 0.9rem; font-weight: 800; }
.legal-page h1 { max-width: none; }
.legal-page__lead { max-width: 58ch; color: var(--text-soft); font-size: 1.2rem; }
.legal-page section { padding-block: 2rem; border-top: 1px solid var(--line); }
.legal-page section:first-of-type { margin-top: 3rem; }
.legal-page section h2 { max-width: none; font-size: clamp(1.6rem, 3vw, 2.25rem); }
.legal-page section p { max-width: 68ch; margin-bottom: 0; color: var(--text-soft); }
.legal-page a { font-weight: 700; text-underline-offset: 0.2em; }

.error-page { width: min(calc(100% - 2rem), 48rem); min-height: 100dvh; margin-inline: auto; display: grid; align-content: center; justify-items: start; padding-block: 4rem; }
.error-page h1 { max-width: 12ch; }
.error-page > p:not(.error-page__label) { max-width: 44ch; margin-bottom: 1.75rem; color: var(--text-soft); font-size: 1.15rem; }
[data-reveal], [data-motion-step] { opacity: 1; transform: none; }

@media (max-width: 50rem) {
  .brand__institution { display: none; }
  .hero { min-height: auto; grid-template-columns: 1fr; gap: 3rem; }
  .hero__copy { max-width: 42rem; }
  .hero__visual { width: min(66vw, 24rem); }
  .topics__grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .topic--main { grid-column: span 6; }
  .topic:not(.topic--main, .topic--climate), .topic--climate { grid-column: span 3; }
  .site-footer { grid-template-columns: 1.2fr 0.8fr; }
}

@media (max-width: 40rem) {
  body { padding-bottom: 4.8rem; font-size: 1rem; }
  .site-header__inner, .hero, .role-strip, .section, .final-cta, .unavailable, .site-footer { width: min(calc(100% - 1.5rem), var(--content-width)); }
  .site-header .button { display: none; }
  .hero { padding-block: 3rem 2rem; gap: 2.75rem; }
  .hero h1 { max-width: 12ch; font-size: clamp(2.65rem, 12.8vw, 3.35rem); line-height: 0.98; }
  .hero__copy::after { right: 0; bottom: -1.5rem; width: 5rem; }
  .hero__lead { margin-bottom: 1.4rem; }
  .hero__copy .button { width: 100%; }
  .hero__visual { width: min(82vw, 20rem); }
  .role-strip { margin-top: 1rem; }
  .role-strip p { grid-template-columns: 1fr; gap: 0.6rem; }
  .section { padding-block: 5.5rem; }
  .topics__grid { grid-template-columns: 1fr; grid-auto-rows: auto; }
  .topic, .topic--main, .topic:not(.topic--main, .topic--climate), .topic--climate { grid-column: auto; grid-row: auto; min-height: 9rem; }
  .topic--main { grid-template-columns: 1.2fr 0.8fr; }
  .topic--climate { min-height: 18rem; grid-template-columns: minmax(8rem, 0.85fr) minmax(0, 1.15fr); grid-template-rows: 1fr; }
  .topic--climate img { min-height: 18rem; }
  .how, .safety { grid-template-columns: 1fr; gap: 2rem; }
  .how .section-heading { position: static; }
  .steps li { min-height: 9.5rem; grid-template-columns: 3.5rem 1fr; }
  .safety { padding: 1.5rem; }
  .about { grid-template-columns: 4.5rem 1fr; gap: 1.25rem; }
  .about__logo { width: 4.5rem; }
  .final-cta { margin-bottom: 2rem; padding: 2rem 1.25rem; grid-template-columns: 1fr; align-items: stretch; }
  .final-cta .button { width: 100%; }
  .site-footer { grid-template-columns: 1fr; gap: 0.75rem; padding-block: 1.5rem 2rem; }
  .legal-page, .error-page { width: min(calc(100% - 1.5rem), 48rem); }
  .legal-page { padding-block: 3rem 4rem; }
  .mobile-cta {
    position: fixed;
    z-index: 20;
    right: 0.75rem;
    bottom: calc(0.65rem + env(safe-area-inset-bottom));
    left: 0.75rem;
    min-height: 3.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-inline: 1rem;
    transform: translateY(calc(100% + 2rem));
    border-radius: 999px;
    background: var(--button);
    color: var(--button-text);
    font-weight: 820;
    text-decoration: none;
    opacity: 0;
    pointer-events: none;
    box-shadow: 0 0.8rem 2rem rgb(11 79 69 / 0.3);
    transition: transform 220ms ease, opacity 220ms ease;
  }
  .mobile-cta.is-active { transform: translateY(0); opacity: 1; pointer-events: auto; }
}

@media (max-width: 22rem) {
  .button, .mobile-cta { padding-inline: 0.8rem; font-size: 0.92rem; }
  .topic--main, .topic--climate { grid-template-columns: 1fr; }
  .topic--main img { width: 8rem; }
  .topic--climate img { width: 100%; height: 14rem; min-height: 0; max-height: none; object-fit: contain; }
  .about { grid-template-columns: 1fr; }
}

@media (prefers-color-scheme: dark) {
  :root {
    --page: #102D28;
    --surface: #173B34;
    --surface-soft: #20473C;
    --surface-warm: #3A4033;
    --text: #F1F4E8;
    --text-soft: #D9E0D4;
    --label: #C8DD96;
    --line: rgb(241 244 232 / 0.16);
    --button: #C7E184;
    --button-text: #102D28;
    --danger-surface: #4A292A;
    --danger-text: #FFD9D5;
    --header: rgb(16 45 40 / 0.9);
    --shadow: 0 1.5rem 4rem rgb(0 0 0 / 0.3);
  }
  :focus-visible { outline-color: var(--nina-lime); }
  .button--primary:hover { background: #D5E99E; color: #102D28; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}