:root {
  --bg: #f3f3f1;
  --surface: #ffffff;
  --border: #dcdcd7;
  --border-strong: #c5c5bf;
  --text: #1b1b19;
  --muted: #6b6b65;
  --accent: #2456c4;
  --accent-hover: #1c47a6;
  --accent-weak: #e9eefa;
  --ok-fg: #1f6b3d; --ok-bg: #e5f1e9;
  --warn-fg: #7d5300; --warn-bg: #f6eedb;
  --bad-fg: #a3282a; --bad-bg: #f7e5e5;
  --radius: 4px;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 14px/1.5 var(--sans); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 22px; font-weight: 600; margin: 0; letter-spacing: -0.01em; }
h2 { font-size: 15px; font-weight: 600; margin: 0 0 12px; }
p { margin: 0 0 10px; }
code, .mono { font-family: var(--mono); font-size: 12.5px; }
code { background: #efefec; padding: 1px 4px; border-radius: 3px; }
.muted { color: var(--muted); }
.small { font-size: 12.5px; }
.nowrap { white-space: nowrap; }
.prewrap { white-space: pre-wrap; }
.mt { margin-top: 20px; }
.wrap { max-width: 1280px; margin: 0 auto; padding: 24px 24px 64px; }

/* top bar */
.topbar { background: var(--surface); border-bottom: 1px solid var(--border); }
.topbar-inner { max-width: 1280px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; gap: 24px; min-height: 52px; flex-wrap: wrap; }
.brand { font-weight: 700; color: var(--text); font-size: 16px; letter-spacing: -0.01em; }
.brand span { font-weight: 400; color: var(--muted); }
.brand:hover { text-decoration: none; }
.mainnav { display: flex; gap: 2px; flex-wrap: wrap; }
.mainnav a, .topbar-user a { color: var(--text); padding: 15px 10px 13px; border-bottom: 2px solid transparent; }
.mainnav a:hover, .topbar-user a:hover { text-decoration: none; color: var(--accent); }
.mainnav a.on, .topbar-user a.on { border-bottom-color: var(--accent); color: var(--accent); }
.search { margin-left: auto; }
.search input { width: 300px; }
.topbar-user { display: flex; align-items: center; gap: 6px; }
.topbar-user form { margin: 0; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
/* language menu (<details> disclosure; same pattern as the web store) */
.flag { display: block; width: 20px; height: 15px; flex: none; outline: 1px solid rgba(0, 0, 0, 0.2); outline-offset: -1px; }
.langmenu { position: relative; margin-right: 6px; }
.langmenu-btn { list-style: none; cursor: pointer; user-select: none; display: flex; align-items: center; gap: 7px; min-height: 32px; padding: 0 8px; border: 1px solid var(--border); border-radius: var(--radius); font: 600 11.5px/1 var(--mono); letter-spacing: 0.04em; color: var(--text); background: var(--surface); }
.langmenu-btn::-webkit-details-marker { display: none; }
.langmenu-btn:hover, .langmenu[open] > .langmenu-btn { border-color: var(--border-strong); }
.langmenu-btn:focus-visible, .langmenu .langmenu-item:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.langmenu-caret { color: var(--muted); }
.langmenu[open] .langmenu-caret { transform: rotate(180deg); }
.langmenu-list { list-style: none; position: absolute; right: 0; top: calc(100% + 4px); z-index: 20; min-width: 180px; max-width: calc(100vw - 32px); max-height: min(70vh, 440px); overflow-y: auto; margin: 0; padding: 4px 0; background: var(--surface); border: 1px solid var(--border-strong); border-radius: var(--radius); }
.langmenu .langmenu-item { display: flex; align-items: center; gap: 10px; min-height: 38px; padding: 0 12px; border: 0; color: var(--text); font-size: 13.5px; }
.langmenu .langmenu-item:hover { background: var(--accent-weak); color: var(--text); text-decoration: none; }
.langmenu .langmenu-item[aria-current="true"] { font-weight: 600; }
.langmenu-check { margin-left: auto; color: var(--accent); flex: none; }
.login-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.login-head .langmenu { margin-right: 0; }
.linklike { background: none; border: 0; padding: 0 10px; color: var(--text); font: inherit; cursor: pointer; }
.linklike:hover { color: var(--accent); }

/* page header */
.pagehead { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin: 4px 0 20px; flex-wrap: wrap; }
.pagehead .meta { color: var(--muted); }
.pagehead .actions { display: flex; gap: 8px; flex-wrap: wrap; }
.crumbs { margin: 0 0 2px; color: var(--muted); font-size: 13px; }
.crumbs a { color: var(--muted); }

/* cards and grids */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; margin-bottom: 20px; }
.card.narrow { max-width: 640px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; }
.grid-2-1 { display: grid; grid-template-columns: 2fr 1fr; gap: 20px; align-items: start; }
.grid-1-2 { display: grid; grid-template-columns: 1fr 2fr; gap: 20px; align-items: start; }
.grid-2 > .card, .grid-2-1 > .card, .grid-1-2 > .card { margin-bottom: 0; }
.grid-2, .grid-2-1, .grid-1-2 { margin-bottom: 20px; }
.stackcol { display: flex; flex-direction: column; gap: 20px; }
.stackcol > .card { margin-bottom: 0; }

/* stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr) 2fr; gap: 12px; margin-bottom: 20px; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; display: flex; flex-direction: column; gap: 4px; }
.stat-label { color: var(--muted); font-size: 12.5px; }
.stat-value { font-size: 24px; font-weight: 600; font-variant-numeric: tabular-nums; }
.stat-value.small { font-size: 16px; padding-top: 6px; }

/* tables */
.tablewrap { overflow-x: auto; margin: 0 -20px; padding: 0 20px; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th { text-align: left; font-weight: 600; color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.03em; padding: 8px 10px; border-bottom: 1px solid var(--border-strong); white-space: nowrap; }
td { padding: 9px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: #fafaf8; }
th:first-child, td:first-child { padding-left: 0; }
th:last-child, td:last-child { padding-right: 0; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
td.empty, p.empty { color: var(--muted); text-align: center; padding: 22px 0; }
td.actions { white-space: nowrap; text-align: right; }
td.actions form + form { margin-left: 4px; }
.hwid { word-break: break-all; min-width: 230px; max-width: 300px; font-size: 12px; }
table.devices td { font-size: 13px; }

/* facts */
.facts { display: grid; grid-template-columns: max-content 1fr; gap: 6px 18px; margin: 14px 0 0; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; overflow-wrap: anywhere; }
.facts.cols { grid-template-columns: max-content 1fr max-content 1fr; }

/* forms */
form { margin: 0; }
form.inline { display: inline-flex; gap: 6px; align-items: center; }
form.compact input { width: 130px; padding: 4px 6px; }
.stack { display: flex; flex-direction: column; gap: 12px; }
.stack > .btn { align-self: flex-start; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
label { display: flex; flex-direction: column; gap: 4px; font-weight: 500; font-size: 13px; }
label.check { flex-direction: row; align-items: center; gap: 8px; font-weight: 400; }
input, select, textarea { font: inherit; color: var(--text); background: #fff; border: 1px solid var(--border-strong); border-radius: var(--radius); padding: 7px 9px; min-width: 0; }
textarea { resize: vertical; }
textarea.mono { font-family: var(--mono); font-size: 12.5px; line-height: 1.5; }
input[readonly] { background: #f5f5f3; color: var(--muted); }
input:focus, select:focus, textarea:focus, .btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
input[type=checkbox] { width: 15px; height: 15px; margin: 0; accent-color: var(--accent); }
fieldset.checks { border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 12px 12px; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 6px 12px; }
fieldset.checks legend { color: var(--muted); font-size: 12px; padding: 0 4px; text-transform: uppercase; letter-spacing: 0.03em; }
.hint { color: var(--muted); font-size: 12.5px; margin: 0; }
.hint + form { margin-top: 12px; }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; font: inherit; font-weight: 500; padding: 7px 14px; border-radius: var(--radius); border: 1px solid var(--border-strong); background: var(--surface); color: var(--text); cursor: pointer; white-space: nowrap; }
.btn:hover { background: #f4f4f2; text-decoration: none; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-danger { color: var(--bad-fg); border-color: #dcb4b4; }
.btn-danger:hover { background: var(--bad-bg); }
.btn-small { padding: 3px 9px; font-size: 12.5px; }

/* badges, flash */
.badge { display: inline-block; font-size: 12px; font-weight: 500; line-height: 1; padding: 4px 7px; border-radius: 3px; background: #ececea; color: #4a4a45; white-space: nowrap; }
.badge-ok { background: var(--ok-bg); color: var(--ok-fg); }
.badge-warn { background: var(--warn-bg); color: var(--warn-fg); }
.badge-bad { background: var(--bad-bg); color: var(--bad-fg); }
.badge-accent { background: var(--accent-weak); color: var(--accent); }
h1 .badge { vertical-align: middle; margin-left: 6px; }
h1 .mono { font-size: 0.8em; font-weight: 500; }
.flash { padding: 10px 14px; border-radius: var(--radius); margin-bottom: 18px; border: 1px solid; }
.flash-ok { background: var(--ok-bg); color: var(--ok-fg); border-color: #c2dccb; }
.flash-err { background: var(--bad-bg); color: var(--bad-fg); border-color: #e6c3c3; }

/* tabs */
.tabs { display: flex; gap: 4px; flex-wrap: wrap; }
.tabs a { padding: 5px 12px; border: 1px solid var(--border); border-radius: var(--radius); color: var(--text); background: var(--surface); }
.tabs a.on { border-color: var(--accent); color: var(--accent); background: var(--accent-weak); }
.tabs a:hover { text-decoration: none; border-color: var(--border-strong); }

/* license key */
.keycard .keyline { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; padding-bottom: 14px; border-bottom: 1px solid var(--border); }
.keyline .label { color: var(--muted); }
code.key { font-size: 15px; padding: 6px 10px; background: #f3f3f0; border: 1px solid var(--border); letter-spacing: 0.04em; }
code.key.masked { color: var(--muted); }

/* login / bare pages */
body.bare { display: flex; min-height: 100vh; align-items: center; justify-content: center; }
main.login { width: 100%; max-width: 380px; padding: 24px 16px; }
main.login .card { padding: 26px 26px 28px; }
main.login h1 { margin-bottom: 6px; }
main.login .muted { font-weight: 400; }
main.login .btn { align-self: stretch; padding: 9px 14px; }

/* public download page */
body.site { background: var(--bg); }
.site-head { background: var(--surface); border-bottom: 1px solid var(--border); }
.site-head-inner { display: flex; align-items: center; justify-content: space-between; }
.wrap.site-head-inner { padding: 14px 24px; }
.site-head .brand { font-size: 18px; }
.download h1 { font-size: 28px; margin-bottom: 8px; }
.download .lead { color: var(--muted); max-width: 640px; margin-bottom: 26px; font-size: 15px; }
.dl-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }
.dl-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; display: flex; flex-direction: column; gap: 10px; }
.dl-card header { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.dl-card h2 { margin: 0; font-size: 17px; }
.dl-card .version { color: var(--muted); }
.dl-card p { margin: 0; }
.dl-links { list-style: none; margin: 4px 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.dl-links li { display: grid; grid-template-columns: 120px 1fr; gap: 4px 12px; align-items: center; }
.dl-links details { grid-column: 1 / -1; }
.dl-links .btn { width: 120px; }
details summary { cursor: pointer; color: var(--muted); }
code.hash { display: block; word-break: break-all; margin-top: 4px; font-size: 11.5px; }
.notes p { margin-top: 6px; }
.upcoming { margin-top: 32px; }
.upcoming ul { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 8px 16px; }
.upcoming li { padding: 8px 0; border-bottom: 1px solid var(--border); display: flex; flex-direction: column; gap: 2px; }
.footer-note { margin-top: 32px; max-width: 720px; }

/* responsive */
@media (max-width: 1100px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat-wide { grid-column: 1 / -1; }
  .search input { width: 220px; }
}
@media (max-width: 900px) {
  .grid-2, .grid-2-1, .grid-1-2 { grid-template-columns: 1fr; }
  .facts.cols { grid-template-columns: max-content 1fr; }
}
@media (max-width: 720px) {
  .wrap { padding: 16px 16px 48px; }
  .topbar-inner { padding: 8px 16px; gap: 8px 12px; }
  .mainnav { order: 3; width: 100%; overflow-x: auto; flex-wrap: nowrap; margin: 0 -16px; padding: 0 6px; }
  .mainnav a { padding: 8px 10px 9px; white-space: nowrap; }
  .search { order: 4; width: 100%; margin-left: 0; }
  .search input { width: 100%; }
  .topbar-user { margin-left: auto; }
  .topbar-user a { padding: 6px 8px; }
  .langmenu-code { display: none; }
  .langmenu-btn { min-height: 36px; padding: 0 10px; }
  .card { padding: 14px 16px; }
  .tablewrap { margin: 0 -16px; padding: 0 16px; }
  .row { grid-template-columns: 1fr; }
  h1 { font-size: 19px; }
  .download h1 { font-size: 23px; }
  .wrap.site-head-inner { padding: 12px 16px; }
  .dl-grid { grid-template-columns: 1fr; }
  .dl-links li { grid-template-columns: 1fr; }
  .dl-links .btn { width: 100%; }
  /* stacked tables: one card-like block per row, labels from data-label */
  table.stacked thead { display: none; }
  table.stacked, table.stacked tbody, table.stacked tr, table.stacked td { display: block; width: 100%; }
  table.stacked tr { border-bottom: 1px solid var(--border-strong); padding: 10px 0; }
  table.stacked tbody tr:last-child { border-bottom: 0; }
  table.stacked td { border: 0; padding: 3px 0; display: grid; grid-template-columns: 96px 1fr; gap: 8px; max-width: none; min-width: 0; }
  table.stacked td::before { content: attr(data-label); color: var(--muted); font-family: var(--sans); font-size: 12px; }
  table.stacked td.actions { display: flex; justify-content: flex-start; gap: 6px; padding-top: 8px; }
  table.stacked td.actions::before { content: none; }
  table.stacked td.empty { display: block; }
  table.stacked td.empty::before { content: none; }
  table.stacked tbody tr:hover td { background: none; }
}