:root {
  --ink: #101719;
  --muted: #5d696a;
  --paper: #f5f4ef;
  --panel: #fffefb;
  --line: #cbd0cd;
  --teal: #0b746b;
  --teal-soft: #e3f0ed;
  --max: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(rgba(16, 23, 25, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 23, 25, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 72px 72px;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 20;
  transform: translateY(-160%);
  padding: 10px 14px;
  border-radius: 999px;
  background: #fff;
  font-weight: 800;
}

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

.project-header,
main,
footer {
  width: min(calc(100% - 36px), var(--max));
  margin-inline: auto;
}

.project-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.project-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.project-brand img {
  width: 54px;
  height: 54px;
}

.project-brand span {
  display: grid;
  gap: 2px;
}

.project-brand strong {
  font-size: 1.05rem;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

.project-brand small {
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.header-link {
  color: var(--teal);
  font-size: 0.9rem;
  font-weight: 800;
  text-decoration: none;
}

.header-link:hover,
.header-link:focus-visible,
footer a:hover,
footer a:focus-visible {
  text-decoration: underline;
}

.hero {
  max-width: 860px;
  padding: clamp(70px, 11vw, 120px) 0 clamp(52px, 8vw, 82px);
}

.eyebrow,
.section-label {
  margin: 0 0 12px;
  color: var(--teal);
  font-size: 0.77rem;
  font-weight: 900;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 24px;
  font-size: clamp(3.2rem, 8vw, 6.4rem);
  line-height: 0.94;
  letter-spacing: -0.06em;
}

.lead {
  max-width: 780px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: clamp(1.1rem, 2.4vw, 1.35rem);
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 24px;
  border-block: 1px solid var(--line);
}

.principles article {
  padding: 28px;
}

.principles article + article {
  border-left: 1px solid var(--line);
}

.principles span {
  display: block;
  margin-bottom: 18px;
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.principles h2,
.payment-card h2,
.organization-card h2,
.legal-note h2 {
  margin-bottom: 10px;
  font-size: 1.35rem;
  letter-spacing: -0.025em;
}

.principles p,
.organization-card p,
.legal-note p {
  margin-bottom: 0;
  color: var(--muted);
}

.support-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(290px, 0.8fr);
  gap: 24px;
  padding: 24px 0;
}

.payment-card,
.organization-card,
.legal-note {
  border: 1px solid var(--line);
  background: var(--panel);
}

.payment-card,
.organization-card {
  padding: clamp(26px, 5vw, 46px);
}

.payment-card {
  border-top: 5px solid var(--ink);
}

.organization-card {
  border-top: 5px solid var(--teal);
}

.card-intro {
  max-width: 650px;
  color: var(--muted);
}

.bank-details {
  margin: 28px 0 20px;
  border-top: 1px solid var(--line);
}

.bank-details div {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 18px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.bank-details dt {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.045em;
  text-transform: uppercase;
}

.bank-details dd {
  margin: 0;
  font-weight: 800;
  overflow-wrap: anywhere;
}

.bank-details .code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.95rem;
  letter-spacing: 0.025em;
}

.payment-note {
  margin-bottom: 0;
  padding: 16px 18px;
  border-left: 4px solid var(--teal);
  background: var(--teal-soft);
  color: #24413e;
  font-size: 0.9rem;
}

.contact-button {
  display: inline-flex;
  margin-top: 26px;
  padding: 13px 16px;
  border-radius: 4px;
  background: var(--ink);
  color: #fff;
  font-weight: 850;
  text-decoration: none;
}

.contact-button:hover,
.contact-button:focus-visible {
  background: var(--teal);
}

.contact-detail {
  margin-top: 10px;
  font-size: 0.84rem;
}

.independence-note {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.independence-note strong {
  display: block;
  margin-bottom: 8px;
}

.legal-note {
  margin: 0 0 70px;
  padding: 26px clamp(26px, 5vw, 46px);
}

.legal-note p {
  max-width: 900px;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 26px 0 34px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.86rem;
}

footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

footer a {
  color: var(--ink);
  font-weight: 750;
  text-decoration: none;
}

@media (max-width: 780px) {
  .project-header,
  footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .project-brand small {
    display: none;
  }

  .principles,
  .support-grid {
    grid-template-columns: 1fr;
  }

  .principles article + article {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .bank-details div {
    grid-template-columns: 1fr;
    gap: 5px;
  }
}

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