:root {
    color-scheme: light;
    --ink: #263b3a;
    --muted: #5c6c67;
    --accent: #24665e;
    --accent-hover: #184c46;
    --line: #dce3dc;
    --paper: #faf9f5;
    --tint: #eaf2ed;
    --warm: #b47745;
    --surface: #fffefa;
    --error: #a32930;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 2rem; scrollbar-gutter: stable; }
body { margin: 0; color: var(--ink); background: radial-gradient(ellipse 700px 430px at 95% 0, #eaf1e8 0, transparent 100%), var(--paper); line-height: 1.6; }
a { color: var(--accent); text-underline-offset: .22em; }
a:hover { color: var(--accent-hover); }
button, input { font: inherit; }
a, button, input { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
.site-shell { max-width: 1180px; min-height: 100vh; padding: 0 48px; margin: auto; display: flex; flex-direction: column; }
.site-header { display: flex; justify-content: space-between; align-items: center; gap: 1.5rem; padding: 28px 0; border-bottom: 1px solid var(--line); }
.wordmark { color: var(--ink); font-weight: 650; letter-spacing: -.045em; font-size: 1.5rem; text-decoration: none; overflow-wrap: anywhere; }
.wordmark-dot { color: var(--warm); }
nav { display: flex; gap: 8px; flex-shrink: 0; }
nav a { color: var(--muted); font-size: .875rem; text-decoration: none; padding: .55rem .9rem; border-radius: 999px; }
nav a:hover, nav a[aria-current] { color: var(--accent-hover); background: var(--tint); }
nav a[aria-current] { font-weight: 600; }
main { flex: 1; }
h1, h2, .signature-name { font-weight: 500; }
h1 { font-size: clamp(2.5rem, 4.8vw, 4.15rem); line-height: 1.09; letter-spacing: -.04em; margin: 0 0 2rem; text-wrap: balance; overflow-wrap: anywhere; }
.page-heading { font-size: clamp(2.15rem, 4vw, 3.4rem); line-height: 1.15; }
.declaration-main::before { content: ""; display: block; width: 52px; height: 4px; border-radius: 4px; background: var(--warm); margin-bottom: 25px; }
h2 { font-size: 2.15rem; line-height: 1.2; margin: 0; letter-spacing: -.03em; }
p { margin: 0 0 1.2rem; }
.eyebrow { text-transform: uppercase; letter-spacing: .13em; font-size: .75rem; font-weight: 650; color: var(--accent); margin-bottom: 1.5rem; }
.lead { font-size: 1.2rem; line-height: 1.65; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
.declaration-section { display: grid; grid-template-columns: minmax(0, 1fr) 290px; column-gap: 64px; padding: 62px 0 68px; }
.declaration-copy { font-size: 1.14rem; line-height: 1.85; overflow-wrap: anywhere; }
.declaration-copy p { margin-bottom: 1.45rem; }
.declaration-copy .lead { font-size: 1.4rem; }
.declaration-copy h2 { margin: 2rem 0 1rem; font-size: 1.6rem; }
.declaration-copy h3 { font-size: 1.25rem; }
.declaration-copy ul, .declaration-copy ol { padding-left: 1.4em; }
.sign-invitation { align-self: start; border: 1px solid #d4e1d7; border-radius: 18px; padding: 28px 24px; margin-top: 29px; background: linear-gradient(145deg, #e9f2eb, #f3f6ed); box-shadow: 0 8px 28px #263b3a08; }
.sign-invitation .eyebrow { margin-bottom: 16px; }
.sign-invitation > p:last-child { margin-bottom: 0; }
.sign-invitation .button { width: 100%; margin: 7px 0 18px; padding-inline: 14px; gap: 12px; font-size: .875rem; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 50px; padding: 13px 20px; background: var(--accent); color: #fff; border: 1px solid var(--accent); border-radius: 9px; text-decoration: none; font-weight: 550; cursor: pointer; box-shadow: 0 3px 8px #184c4612; transition: background .15s ease, box-shadow .15s ease; }
.button:hover { background: var(--accent-hover); color: #fff; box-shadow: 0 5px 12px #184c4624; }
.button span { font-size: 1.2em; font-weight: 400; }
.section-heading { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; margin-bottom: 18px; }
.section-heading h1 { margin: 0; }
.count { color: var(--accent-hover); background: var(--tint); padding: 6px 12px; border-radius: 999px; font-size: .875rem; white-space: nowrap; }
.empty-state { padding: 30px; background: var(--tint); border: 1px solid var(--line); border-radius: 12px; }
.empty-state p { margin-bottom: 3px; }
.signature-list { list-style: none; padding: 0; margin: 0; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: var(--surface); }
.signature-list li { display: grid; grid-template-columns: 1fr 1.4fr; gap: 14px; border-bottom: 1px solid var(--line); padding: 8px 14px; align-items: baseline; overflow-wrap: anywhere; line-height: 1.4; }
.signature-list li:nth-child(even) { background: #f2f5ef; }
.signature-list li:last-child { border-bottom: 0; }
.signature-name { font-size: 1.2rem; }
.signature-affiliation { color: var(--muted); font-size: .9375rem; }
.signature-pagination { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px 20px; margin: 14px 0; }
.signature-range { margin: 0; color: var(--muted); font-size: .8125rem; }
.pagination { flex-wrap: wrap; flex-shrink: 1; max-width: 100%; gap: 4px; }
.pagination a, .pagination span { display: inline-flex; align-items: center; justify-content: center; min-width: 34px; min-height: 36px; padding: 5px 10px; border: 1px solid var(--line); border-radius: 7px; font-size: .875rem; line-height: 1.4; }
.pagination a[aria-current="page"] { color: #fff; background: var(--accent); border-color: var(--accent); }
.pagination .pagination-disabled { color: var(--muted); border-color: transparent; }
.pagination .pagination-gap { min-width: 16px; padding-inline: 2px; border-color: transparent; }
.site-footer { padding: 25px 0; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 1.5rem; color: var(--muted); font-size: .8125rem; }
.site-footer a { color: inherit; }
.form-page { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 84px; padding: 64px 0 88px; }
.form-intro h1 { font-size: clamp(2.7rem, 4vw, 3.4rem); }
.form-intro .lead { margin-bottom: 1.75rem; }
.back-link { display: inline-block; margin-bottom: 2.5rem; font-size: .875rem; }
.signature-form { padding: 30px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); box-shadow: 0 12px 36px #263b3a08; }
.field { margin-bottom: 23px; min-width: 0; }
.field label { display: flex; align-items: baseline; gap: 10px; margin-bottom: 8px; font-size: .9375rem; font-weight: 550; }
.optional { color: var(--muted); font-size: .8125rem; font-weight: 400; }
.field input { width: 100%; min-height: 48px; padding: 11px 12px; border: 1px solid #a4b4a9; border-radius: 7px; color: var(--ink); background: #fff; }
.field input::placeholder { color: #6b7780; }
.field input[aria-invalid] { border-color: var(--error); }
.name-fields { display: grid; grid-template-columns: 130px minmax(0, 1fr); gap: 18px; }
.field-hint, .field-error { font-size: .8125rem; margin: 7px 0 0; }
.field-hint { color: var(--muted); }
.field-error { color: var(--error); }
.consent-group { border-top: 1px solid var(--line); padding-top: 24px; margin: 4px 0 25px; }
.checkbox-label { display: flex; gap: 12px; font-size: .875rem; line-height: 1.65; cursor: pointer; }
.checkbox-label input { flex-shrink: 0; margin: 4px 0 0; width: 18px; height: 18px; accent-color: var(--accent); }
.signature-form > .button { width: 100%; }
.form-note { margin: 10px 0 0; text-align: center; }
.form-intro .button { margin: 4px 0 20px; }
.form-heading { margin: 0 0 20px; font-size: .75rem; font-weight: 650; letter-spacing: .13em; text-transform: uppercase; color: var(--accent); }
.field-label { display: block; margin-bottom: 8px; font-size: .9375rem; font-weight: 550; }
.field-value { margin: 0; min-height: 48px; padding: 11px 12px; border: 1px solid var(--line); border-radius: 7px; background: var(--tint); overflow-wrap: anywhere; }
.signature-orcid { margin-left: .45em; font-size: .8125rem; font-weight: 400; color: var(--muted); white-space: nowrap; }
.error-summary { color: var(--error); border-left: 3px solid var(--error); background: #fff4f4; padding: 12px 15px; margin-bottom: 24px; font-size: .9375rem; }
.honeypot { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.message-page, .confirmation-page { max-width: 700px; width: 100%; padding: 85px 0 95px; }
.message-page .lead, .confirmation-page .lead { color: var(--muted); margin-bottom: 2rem; }
.message-page .button { margin-top: 12px; }
.signature-review { padding: 10px 24px; background: var(--tint); border: 1px solid #d4e1d7; border-radius: 12px; margin: 28px 0 20px; }
.signature-review > div { display: grid; grid-template-columns: 130px minmax(0, 1fr); gap: 16px; padding: 14px 0; }
.signature-review dt { color: var(--muted); font-size: .875rem; }
.signature-review dd { margin: 0; overflow-wrap: anywhere; }
.signature-review .optional { display: block; }
.confirmation-page form { margin-top: 30px; }
.confirmation-page .back-link { margin: 20px 0 0; }
.skip-link { position: absolute; top: -100px; left: 12px; background: white; padding: 12px; z-index: 10; }
.skip-link:focus { top: 12px; }
@media (max-width: 900px) {
    .site-shell { padding: 0 28px; }
    .declaration-section { column-gap: 36px; grid-template-columns: minmax(0, 1fr) 250px; }
    .sign-invitation { padding: 24px 18px; }
    .form-page { gap: 38px; }
    .signature-form { padding: 24px; }
    .name-fields { grid-template-columns: 1fr; gap: 0; }
}
@media (max-width: 650px) {
    .site-shell { padding: 0 22px; }
    .site-header { padding: 22px 0; align-items: flex-start; flex-wrap: wrap; gap: 12px; }
    nav { gap: 4px; }
    nav a { padding: .5rem .75rem; }
    .declaration-section { grid-template-columns: 1fr; padding: 38px 0; }
    .sign-invitation { margin-top: 28px; padding: 24px; }
    .empty-state { padding: 22px; }
    .signature-list li { grid-template-columns: 1fr; gap: 2px; }
    .endorsers-page .sign-invitation { order: -1; margin-top: 0; }
    .site-footer { flex-direction: column; gap: 5px; }
    .form-page { grid-template-columns: 1fr; gap: 24px; padding: 35px 0 55px; }
    .signature-form { padding: 22px 18px; }
    .form-intro .back-link { margin-bottom: 2rem; }
    .name-fields { grid-template-columns: 85px minmax(0, 1fr); gap: 12px; }
    .field label { flex-wrap: wrap; gap: 2px 8px; }
    .message-page, .confirmation-page { padding: 55px 0 65px; }
    .signature-review > div { grid-template-columns: 1fr; gap: 2px; }
    .signature-review .optional { display: inline; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .button { transition: none; }
}