:root {
  --bg: #f7f6f2; --surface: #ffffff; --ink: #1f1e1b; --muted: #5f5d57; --line: #dedbd2;
  --accent: #2a6fbe; --accent-ink: #ffffff; --share: #1d7f58; --match: #8a5a00; --exclude: #8b8a85;
  --share-bg: #e5f4ec; --match-bg: #fbf0d9; --exclude-bg: #eeede9; --error: #b3261e; --error-bg: #fbe9e7;
  --ok-bg: #e5f4ec; --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #161614; --surface: #201f1c; --ink: #ecebe6; --muted: #a9a79f; --line: #3a3934;
    --accent: #6aa5ea; --accent-ink: #0d1a2a; --share: #5cc896; --match: #e6b04f; --exclude: #8b8a85;
    --share-bg: #17301f; --match-bg: #352a12; --exclude-bg: #2a2925; --error: #ff8a80; --error-bg: #3a1d1a; --ok-bg: #17301f;
  }
}
:root[data-theme="dark"] {
  --bg: #161614; --surface: #201f1c; --ink: #ecebe6; --muted: #a9a79f; --line: #3a3934;
  --accent: #6aa5ea; --accent-ink: #0d1a2a; --share: #5cc896; --match: #e6b04f; --exclude: #8b8a85;
  --share-bg: #17301f; --match-bg: #352a12; --exclude-bg: #2a2925; --error: #ff8a80; --error-bg: #3a1d1a; --ok-bg: #17301f;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); }
header.top { max-width: 900px; margin: 0 auto; padding: 16px 16px 0; display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
header.top .brand { font-weight: 700; text-decoration: none; color: var(--ink); margin-right: auto; }
header.top nav { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; font-size: .95rem; }
header.top form { margin: 0; }
main { max-width: 900px; margin: 0 auto; padding: 24px 16px 64px; }
h1 { font-size: 1.75rem; margin: 0 0 8px; line-height: 1.2; }
h2 { font-size: 1.15rem; margin: 0 0 6px; }
h3 { font-size: 1rem; margin: 16px 0 4px; }
p { margin: 0 0 12px; }
.lede { color: var(--muted); font-size: 1.05rem; margin-bottom: 24px; }
section { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; margin-bottom: 16px; }
.hint { color: var(--muted); font-size: .9rem; }
.step { color: var(--muted); font-size: .8rem; letter-spacing: .04em; text-transform: uppercase; }
label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: 4px; }
input[type=text], input[type=email], textarea, select {
  width: 100%; font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; }
textarea { resize: vertical; min-height: 64px; }
input:focus, textarea:focus, select:focus, button:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
@media (max-width: 700px) { .grid, .cards { grid-template-columns: 1fr; } }
.card { border: 1px solid var(--line); border-radius: 8px; padding: 14px; background: var(--bg); }
button, .button { font: inherit; border-radius: 8px; padding: 8px 14px; cursor: pointer; border: 1px solid var(--line);
  background: var(--surface); color: var(--ink); text-decoration: none; display: inline-block; }
button.primary, .button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
button.danger { color: var(--error); }
button.link { border: 0; background: none; color: var(--muted); padding: 4px 6px; text-decoration: underline; }
button:disabled { opacity: .5; cursor: not-allowed; }
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 12px; }
.banner { border-radius: 8px; padding: 10px 14px; margin-bottom: 16px; background: var(--match-bg); }
.banner.ok { background: var(--ok-bg); }
.banner.error { background: var(--error-bg); color: var(--error); }
.check { display: flex; gap: 8px; align-items: flex-start; font-weight: 500; }
.check input { margin-top: 4px; }
code, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .9em; background: var(--bg); padding: 2px 6px; border-radius: 6px; word-break: break-all; }
pre { white-space: pre-wrap; word-break: break-word; font-size: .85rem; background: var(--bg); padding: 10px; border-radius: 8px; }
.tag { display: inline-block; font-size: .78rem; border: 1px solid var(--line); border-radius: 999px; padding: 0 8px; margin: 0 4px 2px 0; color: var(--muted); }
.withheld { color: var(--match); font-style: italic; }
.preview { background: var(--bg); border-radius: 8px; padding: 14px; }
.preview ul, ul.plain { margin: 6px 0 0; padding-left: 18px; }
.preview li, ul.plain li { margin-bottom: 4px; }
.legend { display: grid; gap: 6px; margin: 8px 0 0; padding: 0; list-style: none; font-size: .9rem; }
.legend b.share { color: var(--share); } .legend b.match_only { color: var(--match); } .legend b.exclude { color: var(--exclude); }
.item { border: 1px solid var(--line); border-left: 4px solid var(--share); border-radius: 8px; padding: 12px; margin-top: 12px; }
.item[data-tier=match_only] { border-left-color: var(--match); }
.item[data-tier=exclude] { border-left-color: var(--exclude); opacity: .7; }
.item-head { display: grid; grid-template-columns: 160px 1fr auto; gap: 8px; align-items: center; margin-bottom: 8px; }
@media (max-width: 600px) { .item-head { grid-template-columns: 1fr auto; } .item-head .topics { grid-column: 1 / -1; order: 3; } }
.tiers { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.tiers label { display: inline-flex; align-items: center; gap: 6px; font-weight: 500; font-size: .85rem; border: 1px solid var(--line); border-radius: 999px; padding: 4px 10px; cursor: pointer; margin: 0; }
.tiers input { margin: 0; }
.tiers label.on.share { background: var(--share-bg); border-color: var(--share); }
.tiers label.on.match_only { background: var(--match-bg); border-color: var(--match); }
.tiers label.on.exclude { background: var(--exclude-bg); border-color: var(--exclude); }
.errors { background: var(--error-bg); color: var(--error); border-radius: 8px; padding: 10px 12px; margin-top: 12px; }
.errors ul { margin: 0; padding-left: 18px; }
.status { color: var(--share); font-size: .9rem; }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
.scroll { overflow-x: auto; }
.match { border: 1px solid var(--line); border-radius: 8px; padding: 14px; margin-top: 12px; }
.match[data-status=approved] { border-left: 4px solid var(--share); }
.match[data-status=rejected] { border-left: 4px solid var(--exclude); opacity: .75; }
.flag { color: var(--error); font-weight: 600; }
.mine li.match_only { color: var(--match); }
details summary { cursor: pointer; color: var(--muted); }
footer.foot { max-width: 900px; margin: 0 auto; padding: 0 16px 32px; color: var(--muted); font-size: .9rem; }
footer.foot a { color: var(--muted); }
[data-u=mt0] { margin-top: 0; } [data-u=mt4] { margin-top: 4px; } [data-u=mt6] { margin: 6px 0 0; }
[data-u=mt8] { margin-top: 8px; } [data-u=mt12] { margin-top: 12px; } [data-u=mt16] { margin-top: 16px; }
[data-u=m0] { margin: 0; } [data-u=mb24] { margin: 0 0 24px; }