:root {
  color-scheme: light;
  --ink: #171a18;
  --muted: #5e6660;
  --paper: #fbfbf7;
  --panel: #ffffff;
  --line: #dfe4dc;
  --brand-blue: #0a3657;
  --brand-sky: #0476b9;
  --brand-orange: #f36114;
  --green: var(--brand-sky);
  --green-dark: var(--brand-blue);
  --coral: var(--brand-orange);
  --blue: #123b5a;
  --amber: #e6b84f;
  --shadow: 0 18px 50px rgba(23, 26, 24, 0.12);
  --radius: 8px;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.22em;
}

code {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #f1f4ef;
  color: #26302a;
  padding: 0.06rem 0.28rem;
  font-size: 0.92em;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 72px;
  padding: 0 5vw;
  border-bottom: 1px solid rgba(223, 228, 220, 0.82);
  background: rgba(251, 251, 247, 0.92);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: block;
  flex: 0 0 auto;
  border-radius: 8px;
  background: #eaeaeb;
  object-fit: contain;
  box-shadow: 0 8px 18px rgba(10, 54, 87, 0.14);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(0.7rem, 2vw, 1.5rem);
  font-size: 0.94rem;
  font-weight: 700;
}

.site-nav a {
  color: #303632;
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--green-dark);
}

.nav-cta {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.42rem 0.8rem;
  background: #ffffff;
}

.nav-cta[aria-disabled="true"],
.github-button[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.62;
}

.hero {
  position: relative;
  min-height: min(760px, calc(100svh - 72px));
  overflow: hidden;
  display: grid;
  align-items: start;
  padding: clamp(2.5rem, 5vw, 4.5rem) 5vw clamp(3.5rem, 6vw, 5rem);
  background: var(--brand-blue);
  color: #ffffff;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(10, 54, 87, 0.98) 0%, rgba(10, 54, 87, 0.9) 38%, rgba(10, 54, 87, 0.52) 72%, rgba(10, 54, 87, 0.64) 100%),
    linear-gradient(0deg, rgba(10, 54, 87, 0.58) 0%, rgba(10, 54, 87, 0.06) 46%, rgba(10, 54, 87, 0.34) 100%);
}

.hero-visual {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  margin: 0;
  background: var(--brand-blue);
}

.hero-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  filter: saturate(1.05) contrast(0.92);
  transform: scale(1.02);
  transform-origin: center;
}

.hero-layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(21rem, 30rem);
  align-items: start;
  column-gap: clamp(2rem, 5vw, 5rem);
  row-gap: 1.35rem;
  width: min(1180px, 100%);
  margin: 0 auto;
}

.hero-content {
  grid-column: 1;
  grid-row: 1;
  width: min(39rem, 100%);
  padding-top: clamp(1rem, 3vw, 2.25rem);
}

.hero-details {
  grid-column: 1;
  grid-row: 2;
  width: min(39rem, 100%);
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #7ae0b5;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.05;
  letter-spacing: 0;
}

h1 {
  max-width: 10ch;
  font-size: 6.75rem;
}

h2 {
  font-size: 3.6rem;
}

h3 {
  font-size: 1.15rem;
}

.hero-copy {
  max-width: 39rem;
  margin: 0;
  color: rgba(255, 255, 255, 0.86);
  font-size: 1.2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.button,
.checkout-button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  padding: 0.76rem 1rem;
  font: inherit;
  font-weight: 900;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
}

.primary-button,
.checkout-button {
  border: 1px solid var(--green);
  background: var(--green);
  color: #ffffff;
}

.primary-button:hover,
.checkout-button:hover {
  border-color: var(--green-dark);
  background: var(--green-dark);
}

.secondary-button {
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}

.secondary-button:hover {
  background: rgba(255, 255, 255, 0.18);
}

.refund-line {
  max-width: 39rem;
  margin: 1.1rem 0 0;
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.96rem;
}

.refund-line a {
  color: #ffffff;
}

.overview-section,
.updates-section,
.github-section,
.terms-section {
  padding: clamp(4rem, 8vw, 7rem) 5vw;
}

.section-heading {
  width: min(58rem, 100%);
  margin-bottom: 2rem;
}

.section-heading h2,
.github-section h2 {
  max-width: 13ch;
}

.section-heading p:not(.eyebrow),
.github-section p {
  max-width: 42rem;
  color: var(--muted);
}

.overview-heading {
  display: grid;
  grid-template-columns: minmax(0, 42rem) minmax(18rem, 28rem);
  align-items: end;
  gap: clamp(1.5rem, 5vw, 4rem);
  margin-bottom: 2rem;
}

.overview-heading .section-heading {
  width: auto;
  margin-bottom: 0;
}

.overview-note {
  max-width: 28rem;
  margin: 0 0 0.45rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.feature-card,
.deposit-panel,
.update-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.feature-card {
  min-height: 14rem;
  padding: 1.4rem;
}

.feature-card p,
.update-item p,
.form-note,
.deposit-contact-note {
  color: var(--muted);
}

.deposit-panel {
  grid-column: 2;
  grid-row: 1 / span 2;
  width: min(100%, 30rem);
  padding: clamp(1rem, 3vw, 1.4rem);
  color: var(--ink);
  box-shadow: var(--shadow);
}

.tier-fieldset {
  display: grid;
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  border: 0;
}

.tier-fieldset legend {
  margin-bottom: 0.75rem;
  color: var(--ink);
  font-weight: 900;
}

.tier-option {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.85rem;
  min-height: 5.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.95rem;
  background: #fbfcf9;
  cursor: pointer;
}

.tier-option:has(input:checked) {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(11, 122, 90, 0.12);
}

.tier-option input {
  width: 1.15rem;
  height: 1.15rem;
  accent-color: var(--green);
}

.tier-option span {
  display: grid;
  gap: 0.15rem;
}

.tier-option small {
  color: var(--muted);
  font-weight: 700;
}

.tier-option b {
  font-size: 1.2rem;
}

.amount-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin: 1rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 1rem 0;
}

.amount-row span {
  color: var(--muted);
  font-weight: 800;
}

.amount-row strong {
  font-size: 3.25rem;
  line-height: 1;
}

.config-message {
  margin: 0 0 1rem;
  border: 1px solid rgba(219, 90, 70, 0.45);
  border-radius: var(--radius);
  background: rgba(219, 90, 70, 0.09);
  color: #8f2f24;
  padding: 0.85rem;
  font-weight: 800;
}

.config-message[hidden] {
  display: none;
}

.checkout-button {
  width: 100%;
  cursor: pointer;
}

.form-note {
  margin: 0.85rem 0 0;
  font-size: 0.9rem;
}

.deposit-contact-note {
  margin: 0.55rem 0 0;
  border-top: 1px solid var(--line);
  padding-top: 0.7rem;
  font-size: 0.9rem;
  font-weight: 800;
}

.deposit-contact-note a {
  color: var(--green-dark);
}

.updates-section {
  background: var(--paper);
}

.updates-list {
  display: grid;
  gap: 1rem;
}

.update-item {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 1rem;
  align-items: start;
  padding: 1.25rem;
}

.update-item > span {
  display: inline-grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: 8px;
  background: #171a18;
  color: #ffffff;
  font-weight: 900;
}

.update-item p {
  margin: 0.45rem 0 0;
}

.github-section {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding-bottom: clamp(9rem, 15vw, 13rem);
  background: #17201b;
  color: #ffffff;
}

.github-section > :not(.github-wordmarks) {
  position: relative;
  z-index: 1;
}

.github-wordmarks {
  position: absolute;
  right: 5vw;
  bottom: clamp(1.4rem, 4vw, 2.8rem);
  left: 5vw;
  z-index: 0;
  display: grid;
  justify-items: center;
  gap: 0.55rem;
  color: rgba(255, 255, 255, 0.08);
  letter-spacing: 0;
  pointer-events: none;
  user-select: none;
}

.github-proof-label {
  color: rgba(255, 255, 255, 0.38);
  font-size: clamp(0.72rem, 1.1vw, 0.9rem);
  font-weight: 800;
  line-height: 1.2;
}

.github-wordmark-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: clamp(0.45rem, 2vw, 1.2rem) clamp(0.9rem, 4vw, 3rem);
  font-size: clamp(1.45rem, 4.5vw, 4.4rem);
  font-weight: 900;
  line-height: 0.95;
}

.github-wordmark-list span {
  white-space: nowrap;
}

.github-section .eyebrow {
  color: #7ae0b5;
}

.github-section p {
  color: rgba(255, 255, 255, 0.78);
}

.github-button {
  flex: 0 0 auto;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: #ffffff;
  color: var(--ink);
}

.github-button:hover {
  background: #e8f1e9;
}

.terms-list {
  display: grid;
  gap: 0.9rem;
  max-width: 62rem;
  margin: 0;
  padding-left: 1.35rem;
}

.terms-list li {
  padding-left: 0.35rem;
  color: #343b36;
}

.terms-footnote {
  max-width: 62rem;
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.terms-contact-note {
  max-width: 62rem;
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.terms-contact-note a {
  color: var(--green-dark);
  font-weight: 800;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.4rem 5vw;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer span {
  color: var(--ink);
  font-weight: 900;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink);
  font-weight: 900;
  text-decoration: none;
}

.footer-logo {
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  border-radius: 6px;
  background: #eaeaeb;
  object-fit: contain;
  box-shadow: 0 6px 14px rgba(10, 54, 87, 0.12);
}

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

.site-footer a:not(.footer-brand) {
  font-weight: 800;
}

@media (max-width: 860px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
    padding-top: 1rem;
    padding-bottom: 1rem;
  }

  .site-nav {
    width: 100%;
    justify-content: space-between;
    gap: 0.4rem;
    overflow-x: auto;
    padding-bottom: 0.1rem;
  }

  .site-nav a {
    white-space: nowrap;
  }

  .hero {
    min-height: auto;
    padding-top: 4.5rem;
  }

  .hero::before {
    background:
      linear-gradient(90deg, rgba(10, 54, 87, 0.96) 0%, rgba(10, 54, 87, 0.86) 58%, rgba(10, 54, 87, 0.58) 100%),
      linear-gradient(0deg, rgba(10, 54, 87, 0.58) 0%, rgba(10, 54, 87, 0.08) 50%, rgba(10, 54, 87, 0.36) 100%);
  }

  .hero-layout {
    grid-template-columns: 1fr;
    gap: 1.4rem;
  }

  .hero-content,
  .hero-details,
  .deposit-panel {
    grid-column: auto;
    grid-row: auto;
  }

  .hero-content {
    padding-top: 0;
  }

  h1 {
    font-size: 4.6rem;
  }

  h2 {
    font-size: 2.8rem;
  }

  .hero-visual {
    opacity: 0.58;
  }

  .hero-visual img {
    object-position: center right;
    transform: scale(1.08);
  }

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

  .overview-heading {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .overview-note {
    max-width: 42rem;
    margin-bottom: 0;
  }

  .github-section {
    align-items: flex-start;
    flex-direction: column;
  }

  .github-button {
    width: 100%;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 15px;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
  }

  .site-nav {
    font-size: 0.86rem;
  }

  h1 {
    font-size: 3.4rem;
  }

  h2 {
    font-size: 2.15rem;
  }

  .hero-copy {
    font-size: 1.05rem;
  }

  .amount-row strong {
    font-size: 2.6rem;
  }

  .nav-cta {
    min-height: 34px;
    padding: 0.36rem 0.62rem;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .hero-copy,
  .overview-note,
  .refund-line {
    overflow-wrap: break-word;
  }

  .tier-option {
    grid-template-columns: auto 1fr;
  }

  .tier-option b {
    grid-column: 2;
  }

  .update-item {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-links {
    justify-content: flex-start;
  }
}