:root {
  color-scheme: light;
  --paper: #fff;
  --surface: #f5f5f7;
  --surface-hover: #e8e8ed;
  --ink: #1d1d1f;
  --muted: #626266;
  --accent: #087f79;
  --accent-dark: #05645f;
  --line: #d9d9de;
  --field-line: #8b8b92;
  --error: #a52828;
  --success: #176c48;
  --radius: 10px;
  --s1: 4px;
  --s2: 8px;
  --s3: 12px;
  --s4: 16px;
  --s6: 24px;
  --s8: 32px;
  --s12: 48px;
  --s16: 64px;
  --s24: 96px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; font-size: 16px; line-height: 1.6; }
body, input, textarea, select { caret-color: var(--accent); }
::selection { background: #d5eeeb; color: var(--ink); }
[hidden] { display: none !important; }
a { color: var(--accent-dark); text-underline-offset: .22em; }
a:hover { color: var(--accent); }
a, button, input, textarea, select, summary { -webkit-tap-highlight-color: #d5eeeb; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
a, button, summary { transition: color 160ms ease-out, background-color 160ms ease-out, border-color 160ms ease-out; }
button, input, textarea, select { font: inherit; }
button, select, summary { cursor: pointer; }
button { color: inherit; touch-action: manipulation; }
button:disabled { cursor: not-allowed; opacity: .6; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { text-wrap: balance; }
h1 { font-size: clamp(2.7rem, 6vw, 4.8rem); line-height: 1.04; letter-spacing: -.04em; font-weight: 680; }
h2 { font-size: clamp(1.55rem, 3vw, 2rem); line-height: 1.2; letter-spacing: -.025em; font-weight: 650; }
h3 { font-size: 1.05rem; line-height: 1.4; letter-spacing: -.015em; font-weight: 650; }
p + p { margin-top: var(--s4); }
p, li, dd { overflow-wrap: anywhere; }
code, pre { direction: ltr; text-align: left; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; }
.shell { width: min(1080px, calc(100% - 64px)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.skip-link { position: fixed; inset-block-start: 8px; inset-inline-start: 8px; transform: translateY(-180%); padding: 12px 20px; z-index: 20; color: var(--paper); background: var(--ink); border-radius: var(--radius); }
.skip-link:focus { transform: translateY(0); }
.skip-link:hover { color: var(--paper); }
.site-header { border-bottom: 1px solid var(--line); background: rgba(255,255,255,.96); }
.header-inner { min-height: 80px; display: flex; gap: var(--s8); align-items: center; justify-content: space-between; }
.wordmark { color: var(--ink); text-decoration: none; font-size: 1.3rem; font-weight: 720; letter-spacing: -.04em; min-height: 44px; display: inline-flex; align-items: center; }
.header-languages { display: flex; align-items: center; gap: var(--s2); direction: ltr; margin-inline-start: auto; }
.header-languages a { color: var(--muted); font-size: .72rem; font-weight: 650; text-decoration: none; padding: 4px 6px; min-height: 32px; display: inline-flex; align-items: center; border-radius: 6px; }
.header-languages a:hover, .header-languages a[aria-current="true"] { color: var(--ink); background: var(--surface); }
.site-nav { display: flex; align-items: center; gap: clamp(16px, 2.5vw, 32px); }
.site-nav a { color: var(--muted); text-decoration: none; min-height: 44px; display: inline-flex; align-items: center; font-size: .9rem; white-space: nowrap; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--ink); }
.site-nav a[aria-current="page"] { text-decoration: underline; text-decoration-color: var(--accent); text-decoration-thickness: 2px; text-underline-offset: 8px; }
.nav-toggle { display: none; border: 1px solid var(--line); background: var(--paper); min-height: 44px; border-radius: 8px; padding: 7px 14px; }
.site-footer { background: var(--surface); margin-top: var(--s24); color: var(--muted); font-size: .82rem; }
.footer-inner { padding-block: var(--s8); display: grid; grid-template-columns: 1fr auto auto; gap: var(--s8); align-items: start; }
.footer-inner strong { color: var(--ink); }
.footer-links, .language-links { display: flex; flex-wrap: wrap; gap: var(--s6); }
.footer-links a, .language-links a { color: var(--muted); min-height: 44px; display: inline-flex; align-items: center; }
.language-links { direction: ltr; }
.hero { text-align: center; padding-block: var(--s24) var(--s16); }
.hero h1 { max-width: 940px; margin-inline: auto; }
.hero .intro { max-width: 720px; margin: var(--s6) auto 0; font-size: 1.2rem; }
.intro { color: var(--muted); line-height: 1.55; font-size: 1.1rem; max-width: 68ch; }
.actions { display: flex; align-items: center; gap: var(--s6); margin-top: var(--s8); flex-wrap: wrap; }
.hero .actions { justify-content: center; }
.hero-note, .note, .muted, .field-help, .privacy-note { color: var(--muted); }
.hero-note { margin-top: var(--s6); font-size: .86rem; }
.button { min-height: 48px; border: 1px solid transparent; border-radius: var(--radius); padding: 11px 22px; display: inline-flex; align-items: center; justify-content: center; text-align: center; font-size: .95rem; font-weight: 650; line-height: 1.5; text-decoration: none; background: var(--accent); color: var(--paper); }
.button:hover { color: var(--paper); background: var(--accent-dark); }
.button.secondary { background: var(--surface); color: var(--ink); }
.button.secondary:hover { background: var(--surface-hover); }
.button.danger { background: transparent; color: var(--error); border-color: var(--line); }
.text-link { display: inline-flex; align-items: center; min-height: 44px; text-decoration: none; font-weight: 600; }
.text-link:hover { text-decoration: underline; }
.page-heading { padding-block: var(--s16) var(--s12); }
.page-heading h1 { max-width: 900px; }
.page-heading .intro { margin-top: var(--s6); }
.section-heading { display: flex; align-items: baseline; justify-content: space-between; gap: var(--s4); margin-bottom: var(--s6); }
.section-heading > p { color: var(--muted); font-size: .9rem; }
.feature-band { border-top: 1px solid var(--line); padding-block: var(--s12) var(--s16); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s12); }
.feature-grid article { border-top: 2px solid var(--ink); padding-top: var(--s4); }
.feature-grid p, .split-section p { color: var(--muted); margin-top: var(--s3); }
.split-section { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s16); padding-block: var(--s16); border-top: 1px solid var(--line); }
.principles { display: grid; gap: var(--s6); }
.principles p { margin: 0; }
.principles strong { color: var(--ink); }
.newsletter-strip { margin-top: var(--s8); padding: var(--s8); background: var(--surface); border-radius: var(--radius); display: grid; grid-template-columns: 1fr 1fr; gap: var(--s12); align-items: center; }
.newsletter-strip p { color: var(--muted); margin-top: var(--s2); }
.inline-form label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: var(--s2); }
.inline-form > div { display: flex; gap: var(--s2); }
.inline-form input { min-width: 0; }
.form-layout, .panel-narrow { max-width: 680px; margin-inline: auto; }
.field { margin-bottom: var(--s6); }
.field label { display: block; font-weight: 600; font-size: .95rem; margin-bottom: var(--s2); }
input:not([type="checkbox"]), textarea, select { width: 100%; min-height: 48px; border: 1px solid var(--field-line); border-radius: var(--radius); padding: 11px 14px; color: var(--ink); background: var(--paper); max-width: 100%; }
textarea { resize: vertical; min-height: 140px; }
input[type="file"] { padding: 7px; }
input[type="file"]::file-selector-button { padding: 9px 12px; font: inherit; border: 0; border-radius: 6px; background: var(--surface); color: var(--ink); margin-inline-end: 12px; cursor: pointer; }
[aria-invalid="true"] { border-color: var(--error) !important; }
.field-help, .privacy-note { font-size: .84rem; margin-top: var(--s2); }
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s4); }
.check-field { display: flex; gap: var(--s3); align-items: flex-start; margin-block: var(--s6); }
.check-field input { width: 20px; height: 20px; flex: 0 0 auto; margin-top: 3px; accent-color: var(--accent); }
.form-result { border: 1px solid var(--line); border-radius: var(--radius); padding: var(--s4); margin-block: var(--s4); overflow-wrap: anywhere; }
.form-result.is-error { color: var(--error); border-color: var(--error); }
.form-result.is-success { color: var(--success); border-color: var(--success); }
.row-action-status { margin-block: var(--s3) 0; padding: var(--s3); font-size: .85rem; }
.auth-required, .verification-box { background: var(--surface); border-radius: var(--radius); padding: var(--s6); margin-bottom: var(--s8); }
.auth-required .button { margin-top: var(--s4); }
.steps-inline { list-style: none; padding: 0; margin: 0 0 var(--s8); counter-reset: steps; }
.steps-inline li { display: grid; grid-template-columns: 28px 1fr; gap: var(--s3); margin-bottom: var(--s3); color: var(--muted); }
.steps-inline li::before { counter-increment: steps; content: counter(steps); color: var(--ink); font-weight: 700; font-variant-numeric: tabular-nums; }
.guide-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: var(--s16); align-items: start; }
.guide-toc { position: sticky; top: var(--s8); }
.guide-toc ol { list-style: none; margin: var(--s3) 0 0; padding: 0; }
.guide-toc a { color: var(--muted); display: block; min-height: 44px; padding-block: 9px; text-decoration: none; font-size: .88rem; }
.guide-toc a:hover { color: var(--accent-dark); }
.guide-section + .guide-section { border-top: 1px solid var(--line); margin-top: var(--s16); padding-top: var(--s16); }
.guide-section h2 { margin-bottom: var(--s6); }
.guide-section p, .guide-section li { max-width: 72ch; }
.guide-section ol { padding-inline-start: 1.4em; }
.guide-section li + li { margin-top: var(--s2); }
.guide-section .button { margin-top: var(--s6); }
.demo-preparation { margin-bottom: var(--s8); }
.demo-preparation .text-link { margin-top: var(--s3); }
.os-picker { display: flex; align-items: end; gap: var(--s4); padding: var(--s6); background: var(--surface); border-radius: var(--radius); margin-block: var(--s8); }
.os-picker .field { flex: 1; min-width: 0; margin: 0; }
.diagnostics { margin: 0; }
.diagnostics dt { font-weight: 650; margin-top: var(--s6); }
.diagnostics dd { margin: var(--s2) 0 0; color: var(--muted); }
.code-block { margin-block: var(--s6); background: var(--surface); border-radius: var(--radius); overflow: hidden; }
.code-toolbar { display: flex; justify-content: space-between; gap: var(--s4); align-items: center; padding-block: 6px; padding-inline: 20px 12px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: .78rem; direction: ltr; }
.code-toolbar button { border: 0; background: transparent; min-height: 44px; border-radius: 6px; padding: 8px 10px; }
.code-toolbar button:hover { background: var(--surface-hover); }
pre { margin: 0; padding: 20px; max-width: 100%; overflow-x: auto; line-height: 1.7; white-space: pre-wrap; overflow-wrap: anywhere; }
.filter-bar { display: flex; align-items: center; gap: var(--s4); background: var(--surface); border-radius: var(--radius); padding: var(--s4) var(--s6); margin-bottom: var(--s12); }
.filter-bar label { font-weight: 600; }
.filter-bar select { width: min(280px, 100%); }
.release-list, .data-list, .ticket-list { border-top: 1px solid var(--line); }
.release, .data-row, .ticket-row { padding-block: var(--s6); border-bottom: 1px solid var(--line); }
.release-head, .row-head, .account-bar { display: flex; justify-content: space-between; gap: var(--s6); align-items: flex-start; }
.release-meta, .row-meta { color: var(--muted); font-size: .84rem; }
.release-notes { max-width: 72ch; margin-top: var(--s3); white-space: pre-line; }
.asset-list { margin: var(--s4) 0 0; padding: 0; list-style: none; }
.asset-row { display: grid; grid-template-columns: 1fr auto; gap: var(--s4); align-items: center; padding-block: var(--s3); }
.asset-row + .asset-row { border-top: 1px solid var(--line); }
.asset-name { font-weight: 600; }
.asset-meta { display: block; color: var(--muted); font-size: .8rem; direction: ltr; text-align: start; }
.download-meta { grid-column: 1 / -1; color: var(--muted); font-size: .8rem; }
.download-meta summary { width: fit-content; min-height: 44px; display: flex; align-items: center; }
.checksum-row { display: flex; gap: var(--s4); align-items: start; padding-bottom: var(--s2); direction: ltr; }
.checksum { display: block; color: var(--muted); font-size: .76rem; word-break: break-all; direction: ltr; text-align: left; }
.small-copy { border: 1px solid var(--line); background: var(--paper); border-radius: 8px; padding: 8px 12px; min-height: 44px; font-size: .8rem; white-space: nowrap; }
.small-copy:hover { background: var(--surface); }
.history-section, .stack-section { margin-top: var(--s16); }
.about-profile { max-width: 780px; padding-bottom: var(--s16); }
.about-profile .role { color: var(--accent-dark); font-weight: 650; margin-top: var(--s2); }
.about-profile .story { font-size: 1.15rem; color: var(--muted); margin-block: var(--s6); white-space: pre-line; }
.tabs { display: flex; gap: var(--s1); overflow-x: auto; border-bottom: 1px solid var(--line); margin-bottom: var(--s8); }
.tabs button { min-height: 48px; white-space: nowrap; border: 0; border-bottom: 2px solid transparent; background: transparent; padding: 10px 16px; color: var(--muted); }
.tabs button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--accent); }
.ticket-row { display: grid; grid-template-columns: 1fr auto; gap: var(--s6); }
.ticket-row button { justify-self: end; }
.status-badge { display: inline-flex; min-height: 28px; align-items: center; padding: 2px 10px; border-radius: 999px; background: var(--surface); color: var(--muted); font-size: .76rem; font-weight: 650; }
.detail-dialog { width: min(720px, calc(100% - 32px)); max-height: calc(100vh - 48px); border: 1px solid var(--line); border-radius: 14px; padding: var(--s8); color: var(--ink); }
.detail-dialog::backdrop { background: rgba(29,29,31,.34); }
.dialog-close { position: absolute; inset-block-start: 12px; inset-inline-end: 12px; width: 44px; height: 44px; border: 0; border-radius: 50%; background: var(--surface); font-size: 1.4rem; }
.detail-dialog h2 { padding-inline-end: 48px; }
.comment-list { list-style: none; padding: 0; margin-block: var(--s6); }
.comment-list li { padding-block: var(--s4); border-top: 1px solid var(--line); }
.comment-list small { display: block; color: var(--muted); margin-bottom: var(--s2); }
.account-bar { padding: var(--s6); background: var(--surface); border-radius: var(--radius); margin-bottom: var(--s8); }
.metric-strip { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); border-block: 1px solid var(--line); margin-bottom: var(--s12); }
.metric-strip > div { padding: var(--s6); }
.metric-strip > div + div { border-inline-start: 1px solid var(--line); }
.metric-strip span { display: block; font-size: 1.75rem; font-weight: 680; font-variant-numeric: tabular-nums; }
.metric-strip small { color: var(--muted); }
.admin-tabs { margin-bottom: var(--s12); }
.admin-split { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: var(--s16); }
.admin-split h2, [data-admin-panel] > h2, [data-admin-panel] form > h2 { margin-bottom: var(--s6); }
.locale-fields { display: grid; gap: var(--s4); }
.locale-fields textarea { min-height: 110px; }
.edit-panel { margin-top: var(--s8); padding: var(--s6); background: var(--surface); border-radius: var(--radius); }
.preview { margin-block: var(--s6); border-block: 1px solid var(--line); }
.preview summary { min-height: 48px; padding-block: 11px; font-weight: 600; }
.preview pre { background: var(--paper); border: 1px solid var(--line); }
.upload-form { display: grid; grid-template-columns: 1fr 130px 130px auto; gap: var(--s2); margin-top: var(--s4); align-items: end; }
.upload-form .field { margin: 0; }
.loading, .empty-state { color: var(--muted); padding-block: var(--s6); }
.inline-actions { display: flex; flex-wrap: wrap; gap: var(--s2); margin-top: var(--s4); }
.inline-actions button, .compact-button { min-height: 44px; padding: 8px 14px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); }
.inline-actions button:hover, .compact-button:hover { background: var(--surface); }

@media (max-width: 960px) {
  .header-inner { flex-wrap: wrap; gap: 0; padding-block: var(--s2); }
  .wordmark { flex: 1; }
  .header-languages { margin-inline-start: 0; margin-inline-end: var(--s2); }
  .nav-toggle { display: block; }
  .site-nav { display: none; width: 100%; flex-direction: column; align-items: stretch; gap: 0; padding-block: var(--s2); }
  .site-nav.is-open { display: flex; }
  .site-nav a { border-top: 1px solid var(--line); }
  .guide-layout { grid-template-columns: 1fr; gap: var(--s8); }
  .guide-toc { position: static; border-bottom: 1px solid var(--line); padding-bottom: var(--s4); }
  .guide-toc ol { display: flex; flex-wrap: wrap; column-gap: var(--s6); }
  .admin-split { grid-template-columns: 1fr; }
  .upload-form { grid-template-columns: 1fr 1fr; }
  .upload-form .field:first-child { grid-column: 1 / -1; }
}
@media (max-width: 620px) {
  .shell { width: calc(100% - 40px); }
  h1 { font-size: clamp(2.45rem, 12vw, 3.3rem); }
  .hero { padding-block: var(--s16) var(--s12); }
  .hero .intro { font-size: 1.05rem; }
  .feature-grid, .split-section, .newsletter-strip, .footer-inner, .field-grid { grid-template-columns: 1fr; gap: var(--s8); }
  .feature-grid { gap: var(--s6); }
  .split-section { padding-block: var(--s12); }
  .inline-form > div { flex-direction: column; }
  .inline-form .button, .form-layout > form > .button { width: 100%; }
  .footer-links { margin-top: 0; }
  .page-heading { padding-block: var(--s12) var(--s8); }
  .section-heading, .release-head, .row-head, .account-bar { display: block; }
  .section-heading > p, .release-head > *, .row-head > * { margin-top: var(--s2); }
  .account-bar .button { margin-top: var(--s4); }
  .filter-bar { align-items: stretch; flex-direction: column; }
  .os-picker { align-items: stretch; flex-direction: column; }
  .filter-bar select { width: 100%; }
  .asset-row, .ticket-row { grid-template-columns: 1fr; }
  .asset-row .button, .ticket-row button { justify-self: start; }
  .checksum-row { flex-direction: column; gap: var(--s2); }
  .metric-strip { grid-template-columns: 1fr 1fr; }
  .metric-strip > div:nth-child(odd) { border-inline-start: 0; }
  .metric-strip > div:nth-child(n+3) { border-top: 1px solid var(--line); }
  .upload-form { grid-template-columns: 1fr; }
  .upload-form .field:first-child { grid-column: auto; }
  .detail-dialog { padding: var(--s6); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}