:root {
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    sans-serif;
  font-synthesis: none;
  color-scheme: light;
  --bg: #f8f8f8;
  --surface: #fff;
  --surface-2: #f3f3f3;
  --line: #e2e2e2;
  --control-line: #8a8a8a;
  --ink: #222;
  --muted: #555;
  --faint: #6f6f6f;
  --link: #0b5fb0;
  --sun: #f7b952;
  --sun-hover: #eb9628;
  --on-sun: #222;
  --step-bg: #fcf0db;
  --step-ink: #994800;
  --eyebrow: #a35504;
  --focus: #0b5fb0;
  --drop-bg: #fef8ef;
  --drop-line: #e2a447;
  --success-bg: #ebfaf9;
  --success-ink: #035753;
  --error-bg: #fff2f0;
  --error-ink: #a31a05;
  --shadow: 0 1px 2px #0000000a, 0 8px 30px #0000000d;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #111;
    --surface: #1c1c1c;
    --surface-2: #262626;
    --line: #353535;
    --control-line: #7b7b7b;
    --ink: #f3f3f3;
    --muted: #c4c4c4;
    --faint: #a5a5a5;
    --link: #8fbdf0;
    --step-bg: #3a2a10;
    --step-ink: #facc81;
    --eyebrow: #facc81;
    --focus: #8fbdf0;
    --drop-bg: #221c12;
    --drop-line: #9c6a22;
    --success-bg: #0d2e2c;
    --success-ink: #9be0dd;
    --error-bg: #3a1510;
    --error-ink: #f7b5ab;
    --shadow: 0 1px 2px #00000066, 0 8px 30px #00000059;
  }
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.6;
}
a {
  color: var(--link);
  text-underline-offset: 3px;
}
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--ink);
  text-decoration: none;
}
.brand img {
  display: block;
  height: 32px;
  width: auto;
}
.brand span {
  border-left: 1px solid var(--line);
  padding-left: 16px;
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--muted);
}
.header-link {
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}
.header-link:hover {
  text-decoration: underline;
}
.layout {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 56px;
  align-items: start;
  padding-top: 48px;
  padding-bottom: 64px;
}
.intro {
  position: sticky;
  top: 32px;
}
.eyebrow {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--eyebrow);
  margin-bottom: 14px;
}
h1 {
  font-size: 44px;
  line-height: 1.1;
  letter-spacing: -1.5px;
  font-weight: 750;
  margin: 0 0 18px;
}
p {
  margin: 0;
}
.lead {
  font-size: 17px;
  color: var(--muted);
  max-width: 460px;
}
.steps {
  list-style: none;
  counter-reset: step;
  margin: 36px 0 0;
  padding: 0;
  display: grid;
  gap: 20px;
}
.steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 34px 1fr;
  column-gap: 14px;
}
.steps li::before {
  content: counter(step);
  grid-row: span 2;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--step-bg);
  color: var(--step-ink);
  font-weight: 700;
  font-size: 15px;
  display: grid;
  place-items: center;
}
.steps strong {
  font-size: 15px;
  line-height: 34px;
}
.steps span {
  color: var(--muted);
  font-size: 14px;
}
.aside-note {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 10px;
  font-size: 14px;
  color: var(--muted);
}
.form-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 32px;
  box-shadow: var(--shadow);
}
fieldset {
  border: 0;
  margin: 0 0 28px;
  padding: 0 0 28px;
  border-bottom: 1px solid var(--line);
  min-width: 0;
}
legend {
  font-size: 18px;
  font-weight: 700;
  padding: 0;
  margin-bottom: 18px;
  display: flex;
  align-items: baseline;
  gap: 10px;
}
legend small {
  font-size: 13px;
  font-weight: 500;
  color: var(--faint);
}
label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin: 0 0 18px;
}
input,
select,
textarea {
  display: block;
  width: 100%;
  margin-top: 7px;
  border: 1px solid var(--control-line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 15px;
  font-weight: 400;
  padding: 10px 12px;
  min-height: 44px;
}
textarea {
  resize: vertical;
  line-height: 1.55;
}
input::placeholder,
textarea::placeholder {
  color: var(--faint);
}
input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--focus);
  outline-offset: 1px;
  border-color: var(--focus);
}
button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}
[aria-invalid='true'] {
  border-color: var(--error-ink);
}
.field-error {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--error-ink);
}
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 18px;
}
.hint {
  font-size: 13px;
  color: var(--faint);
  margin-top: -6px;
}
.drop-zone {
  position: relative;
  display: grid;
  justify-items: center;
  gap: 4px;
  margin: 0;
  padding: 26px 20px;
  border: 2px dashed var(--drop-line);
  border-radius: 12px;
  background: var(--drop-bg);
  text-align: center;
  cursor: pointer;
}
.drop-zone:hover,
.drop-zone.dragging {
  border-style: solid;
}
.drop-zone:focus-within {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}
.drop-zone input {
  position: absolute;
  width: 1px;
  height: 1px;
  min-height: 0;
  opacity: 0;
  pointer-events: none;
}
.drop-zone svg {
  fill: none;
  stroke: var(--step-ink);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  margin-bottom: 4px;
}
.drop-title {
  font-size: 15px;
  font-weight: 600;
}
.drop-title u {
  color: var(--link);
  text-underline-offset: 3px;
}
.drop-help {
  font-size: 13px;
  font-weight: 400;
  color: var(--muted);
}
.drop-zone.full {
  opacity: 0.6;
}
.file-list,
.file-errors {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.file-list:empty {
  display: none;
}
.file-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-2);
  font-size: 14px;
}
.file-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 500;
}
.file-size {
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
}
.file-remove {
  border: 0;
  background: none;
  color: var(--link);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  padding: 4px;
}
.file-errors li {
  padding: 10px 12px;
  border-radius: 8px;
  background: var(--error-bg);
  color: var(--error-ink);
  font-size: 14px;
}
#file-count {
  margin: 10px 0 0;
}
.submit-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.primary {
  margin-left: auto;
  border: 0;
  border-radius: 10px;
  background: var(--sun);
  color: var(--on-sun);
  font: inherit;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  padding: 14px 26px;
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.primary:hover {
  background: var(--sun-hover);
}
.primary:disabled {
  opacity: 0.6;
  cursor: wait;
}
#feedback {
  border-radius: 10px;
  background: var(--surface-2);
  padding: 14px 16px;
  font-size: 15px;
  margin-bottom: 24px;
  overflow-wrap: anywhere;
}
#feedback.error {
  background: var(--error-bg);
  color: var(--error-ink);
}
#feedback.success {
  background: var(--success-bg);
  color: var(--success-ink);
}
.single {
  max-width: 640px;
  margin: 0 auto;
  padding: 64px 32px 88px;
}
.single h1 {
  font-size: 40px;
}
.single > p {
  color: var(--muted);
  font-size: 17px;
}
.single .form-card {
  margin-top: 28px;
}
.single .form-card .primary {
  width: 100%;
  justify-content: space-between;
}
.single .form-card .hint {
  margin: 14px 0 0;
}
.small {
  font-size: 14px;
  color: var(--faint);
  margin-top: 18px;
}
.amount-card {
  border-radius: 12px;
  padding: 20px;
  background: var(--step-bg);
  margin-bottom: 24px;
  display: grid;
  gap: 4px;
}
.amount-card span,
.amount-card small {
  font-size: 14px;
  color: var(--muted);
}
.amount-card strong {
  font-size: 32px;
  letter-spacing: -1px;
  color: var(--ink);
}
main {
  flex: 1;
}
.site-footer {
  border-top: 1px solid var(--line);
  padding: 24px 0 32px;
  color: var(--faint);
  font-size: 13px;
}
fieldset > :last-child {
  margin-bottom: 0;
}
.single #challenge {
  margin-bottom: 16px;
}
.single > p.small {
  font-size: 14px;
  color: var(--faint);
}
.skip {
  position: absolute;
  left: 12px;
  top: -70px;
  background: var(--surface);
  padding: 12px;
  z-index: 5;
}
.skip:focus {
  top: 12px;
}
[hidden] {
  display: none !important;
}
@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .intro {
    position: static;
  }
  .steps {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 640px) {
  .container,
  .single {
    padding-left: 18px;
    padding-right: 18px;
  }
  .header-row {
    min-height: 64px;
  }
  .brand img {
    height: 26px;
  }
  .brand span {
    font-size: 12px;
    padding-left: 12px;
  }
  .brand {
    gap: 12px;
  }
  .header-link {
    font-size: 13px;
  }
  .layout {
    padding-top: 32px;
  }
  h1,
  .single h1 {
    font-size: 34px;
  }
  .steps {
    grid-template-columns: 1fr;
  }
  .two-col {
    grid-template-columns: 1fr;
  }
  .form-card {
    padding: 22px 18px;
  }
  .primary {
    width: 100%;
    justify-content: space-between;
  }
}