:root {
  --bg: #e7f4fb;
  --panel: rgba(255, 255, 255, 0.72);
  --panel-strong: rgba(255, 255, 255, 0.82);
  --text: #0f2b44;
  --muted: #355a74;
  --accent: #0f7abf;
  --accent-2: #0f9fbf;
  --border: rgba(15, 42, 68, 0.12);
  --shadow: 0 20px 60px rgba(10, 59, 96, 0.16);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #e7f4fb 0%, #c7e6f6 40%, #a8d9f0 100%);
  line-height: 1.6;
}

main {
  padding-top: 96px;
}

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  background: rgba(231, 244, 251, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.nav__brand {
  font-weight: 700;
  letter-spacing: 0.02em;
}

.nav__logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.nav__logo img {
  height: 52px;
  width: auto;
}

.nav__links {
  display: flex;
  gap: 16px;
}

.nav__links a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  padding: 8px 10px;
  border-radius: 999px;
  transition: color 0.2s ease, background 0.2s ease;
}

.nav__links a:hover {
  color: var(--text);
  background: rgba(15, 122, 191, 0.1);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 64px 0 48px;
  background: linear-gradient(160deg, rgba(15, 122, 191, 0.4), rgba(15, 122, 191, 0.12)), url("Hero_banner.png");
  background-size: cover, cover;
  background-repeat: no-repeat, no-repeat;
  background-position: center center, center top;
  border-bottom: 1px solid var(--border);
  color: #0b2a42;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(231, 244, 251, 0.6), rgba(231, 244, 251, 0.88));
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero__content {
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px 20px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

.hero__grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 32px;
  padding-top: 320px; /* shift content down to reveal more of the banner */
}

h1 {
  font-size: clamp(32px, 5vw, 48px);
  margin: 12px 0 8px;
  line-height: 1.1;
}

.tagline {
  font-size: 20px;
  color: var(--text);
  margin: 16px 0 14px;
}

.lede {
  color: var(--muted);
  margin: 0 0 12px;
}

.status {
  color: var(--accent);
  font-weight: 600;
  margin: 8px 0 16px;
}

.hero__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.2s ease, border 0.2s ease;
}

.btn.primary {
  background: linear-gradient(120deg, #0f7abf 0%, #4fb4e2 100%);
  color: #f7fbff;
  box-shadow: var(--shadow);
}

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

.btn.ghost {
  border-color: var(--border);
  color: var(--text);
  background: rgba(15, 122, 191, 0.08);
}

.btn.ghost:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

.hero__card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px 20px 16px;
  box-shadow: var(--shadow);
}

.stewarded-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.link-button {
  background: none;
  border: none;
  padding: 0;
  text-align: left;
  color: var(--accent);
  font-weight: 700;
  cursor: pointer;
  transition: color 0.15s ease, text-decoration-color 0.15s ease;
  text-decoration: underline;
  text-decoration-color: transparent;
}

.link-button:hover,
.link-button:focus-visible {
  color: #0a5f95;
  text-decoration-color: #0a5f95;
  outline: none;
}

.section {
  padding: 72px 0;
  border-bottom: 1px solid var(--border);
}

.emphasis {
  background: rgba(255, 255, 255, 0.4);
}

h2 {
  margin: 0 0 12px;
  font-size: clamp(26px, 4vw, 34px);
}

h3 {
  margin: 0 0 10px;
  font-size: 20px;
}

p {
  margin: 0 0 12px;
}

ul {
  margin: 0 0 12px;
  padding-left: 20px;
  color: var(--muted);
}

li {
  margin-bottom: 8px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px 20px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

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

.pill {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(15, 122, 191, 0.12);
  color: var(--accent);
  border: 1px solid rgba(15, 122, 191, 0.18);
  font-size: 13px;
  letter-spacing: 0.01em;
  font-weight: 600;
}

.pill.small {
  padding: 4px 10px;
  font-size: 12px;
}

.two-col {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
  align-items: start;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.stack {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  margin-top: 12px;
}

.principles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.principle {
  font-weight: 600;
  color: var(--text);
}

.faq details {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  margin-bottom: 10px;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
}

.faq p {
  margin-top: 10px;
  color: var(--muted);
}

.contact-email a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.contact-email a:hover {
  text-decoration: underline;
}

.footer {
  padding: 28px 0 36px;
  background: linear-gradient(180deg, #b9e1f3 0%, #a0d2ec 100%);
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  color: var(--muted);
}

.footer__links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.footer__links a {
  color: var(--text);
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
}

.footer__links a:hover {
  background: rgba(255, 255, 255, 0.06);
}

.with-people {
  position: relative;
  overflow: hidden;
  padding-bottom: 260px;
}

.with-people::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 240px;
  background: url("people_helping.png") center bottom / contain no-repeat;
  opacity: 0.92;
  pointer-events: none;
}

.with-people .container {
  position: relative;
  z-index: 1;
}

.with-people-b {
  position: relative;
  overflow: hidden;
  padding-bottom: 240px;
}

.with-people-b::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 220px;
  background: url("helping_people2.png") center bottom / contain no-repeat;
  opacity: 0.9;
  pointer-events: none;
}

.with-people-c {
  position: relative;
  overflow: hidden;
  padding-bottom: 240px;
}

.with-people-c::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 220px;
  background: url("helping_people3.png") center bottom / contain no-repeat;
  opacity: 0.9;
  pointer-events: none;
}

.hero-infographic {
  margin: 18px 0 0;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.hero-infographic img {
  width: 100%;
  display: block;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 24, 46, 0.55);
  backdrop-filter: blur(6px);
  z-index: 200;
}

.modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 16px;
  z-index: 201;
}

.modal[hidden],
.modal-backdrop[hidden] {
  display: none !important;
}

.modal__content {
  max-width: 520px;
  width: min(520px, 92vw);
  background: var(--panel-strong);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px 22px;
  box-shadow: var(--shadow);
  position: relative;
}

.modal__content h3 {
  margin-top: 0;
  margin-bottom: 10px;
}

.modal__content ul {
  padding-left: 18px;
  color: var(--muted);
}

.modal__close {
  position: absolute;
  top: 10px;
  right: 12px;
  border: none;
  background: none;
  color: var(--muted);
  font-size: 20px;
  cursor: pointer;
}

.modal__close:hover,
.modal__close:focus-visible {
  color: var(--text);
  outline: none;
}

.converter {
  align-items: start;
}

.converter-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.converter-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.converter-input {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.72);
  padding: 10px 12px;
  color: var(--text);
  font-size: 14px;
  min-height: 48px;
}

.converter-input:focus {
  outline: 2px solid var(--accent);
  border-color: var(--accent);
}

.converter-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.converter-alert {
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 13px;
}

.converter-alert.error {
  border: 1px solid #d14343;
  background: rgba(209, 67, 67, 0.1);
  color: #7d1111;
}

.converter-alert.warn {
  border: 1px solid #e0a112;
  background: rgba(224, 161, 18, 0.12);
  color: #8a5b00;
}

.converter-metrics,
.converter-cost {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
  background: rgba(255, 255, 255, 0.45);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
}

.metric-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.metric-value {
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 14px;
  color: var(--text);
}

.cost-field input {
  margin-top: 4px;
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border);
  padding: 6px 8px;
  background: rgba(255, 255, 255, 0.82);
  color: var(--text);
}

.cost-field select {
  margin-top: 4px;
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border);
  padding: 6px 8px;
  background: rgba(255, 255, 255, 0.82);
  color: var(--text);
}

.converter-scale {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px;
  margin: 6px 0;
}

@media (max-width: 860px) {
  .nav {
    padding: 14px 18px;
    flex-wrap: wrap;
    gap: 8px 12px;
  }

  .nav__logo img {
    height: 44px;
  }

  .nav__links {
    width: 100%;
    flex-wrap: wrap;
  }

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

  .hero__card {
    order: 2;
  }

  main {
    padding-top: 120px;
  }
}