:root {
  --bg: #f6f7fb; --panel: #ffffff; --ink: #1b1f2a; --muted: #6b7385; --line: #e3e6ef;
  --accent: #4f6bed; --accent-ink: #fff; --soft: #eef1fd; --danger: #d14343; --ok: #1f9d63; --warn: #c98a0c;
  --add: #e3f6ea; --del: #fde8e8; --code: #f1f3f8;
  --s-idea: #8a8fa3; --s-planning: #7a6ff0; --s-active: #1f9d63; --s-paused: #c98a0c; --s-testing: #2b8fd6;
  --s-released: #4f6bed; --s-maintenance: #3aa3a3; --s-archived: #a0a4b0;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12141b; --panel: #1b1e28; --ink: #e6e8ef; --muted: #9298aa; --line: #2c303d;
    --accent: #7b91ff; --accent-ink: #0d1020; --soft: #232a45; --add: #173326; --del: #3a1d1f; --code: #232633;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #12141b; --panel: #1b1e28; --ink: #e6e8ef; --muted: #9298aa; --line: #2c303d;
  --accent: #7b91ff; --accent-ink: #0d1020; --soft: #232a45; --add: #173326; --del: #3a1d1f; --code: #232633;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.55 system-ui, -apple-system, "Segoe UI", "PingFang TC", "Microsoft JhengHei", sans-serif; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
header { position: sticky; top: 0; z-index: 5; display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 10px 20px; background: var(--panel); border-bottom: 1px solid var(--line); }
.brand { font-size: 17px; color: var(--ink); white-space: nowrap; }
.brand b { color: var(--accent); }
nav { display: flex; gap: 4px; align-items: center; flex-wrap: wrap; margin-left: auto; }
nav a { padding: 6px 10px; border-radius: 8px; color: var(--muted); white-space: nowrap; }
nav a.on, nav a:hover { background: var(--soft); color: var(--accent); text-decoration: none; }
main { max-width: 1200px; margin: 0 auto; padding: 20px 16px 80px; }
h1 { font-size: 24px; margin: 4px 0 12px; }
h2 { font-size: 18px; margin: 24px 0 10px; }
h3 { font-size: 15px; margin: 18px 0 8px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spread { justify-content: space-between; }
.grow { flex: 1; min-width: 0; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.stack > * + * { margin-top: 12px; }
button, .btn { font: inherit; border: 1px solid var(--accent); background: var(--accent); color: var(--accent-ink);
  border-radius: 8px; padding: 7px 14px; cursor: pointer; white-space: nowrap; }
button.ghost, .btn.ghost { background: transparent; color: var(--accent); }
button.danger { background: transparent; color: var(--danger); border-color: var(--danger); }
button:disabled { opacity: .5; cursor: default; }
input, select, textarea { font: inherit; color: var(--ink); background: var(--panel); border: 1px solid var(--line);
  border-radius: 8px; padding: 7px 10px; width: 100%; }
textarea { min-height: 120px; resize: vertical; font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: 13.5px; }
textarea.tall { min-height: 420px; }
label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.form-grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.form-grid .wide { grid-column: 1 / -1; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 14px; display: flex;
  flex-direction: column; gap: 8px; color: var(--ink); }
.card:hover { border-color: var(--accent); text-decoration: none; }
.card h3 { margin: 0; font-size: 16px; }
.badge { display: inline-block; font-size: 12px; padding: 1px 8px; border-radius: 99px; border: 1px solid var(--line); color: var(--muted); white-space: nowrap; }
.status { color: #fff; border: 0; }
.pill { background: var(--danger); color: #fff; border-radius: 99px; font-size: 11px; padding: 0 6px; }
.bar { height: 6px; background: var(--line); border-radius: 99px; overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--accent); }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { border: 1px solid var(--line); background: var(--panel); color: var(--ink); border-radius: 99px; padding: 4px 12px; font-size: 13px; }
.chip.on { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.kv { display: grid; grid-template-columns: 130px 1fr; gap: 6px 14px; }
.kv dt { color: var(--muted); font-size: 13px; }
.kv dd { margin: 0; overflow-wrap: anywhere; }
.kv ul { margin: 0; padding-left: 18px; }
.cols { display: grid; gap: 16px; grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); }
@media (max-width: 860px) { .cols { grid-template-columns: 1fr; } .kv { grid-template-columns: 1fr; } .kv dt { margin-top: 6px; } }
.timeline { list-style: none; padding: 0; margin: 0; }
.timeline li { border-left: 2px solid var(--line); padding: 0 0 14px 14px; position: relative; }
.timeline li::before { content: ""; position: absolute; left: -6px; top: 6px; width: 10px; height: 10px; border-radius: 50%; background: var(--accent); }
.timeline .meta { font-size: 12px; color: var(--muted); }
.timeline .txt { white-space: pre-wrap; overflow-wrap: anywhere; }
.k-milestone::before, .k-release::before { background: var(--ok) !important; }
.k-issue::before { background: var(--danger) !important; }
.k-handoff::before { background: var(--warn) !important; }
.md { overflow-wrap: anywhere; }
.md pre { background: var(--code); padding: 10px; border-radius: 8px; overflow-x: auto; }
.md code { background: var(--code); padding: 1px 4px; border-radius: 4px; font-size: 13px; }
.md pre code { padding: 0; background: none; }
.md table { border-collapse: collapse; display: block; overflow-x: auto; }
.md th, .md td { border: 1px solid var(--line); padding: 4px 8px; text-align: left; vertical-align: top; }
.md blockquote { margin: 0; padding-left: 12px; border-left: 3px solid var(--line); color: var(--muted); }
.md h1 { font-size: 20px; } .md h2 { font-size: 17px; } .md h3 { font-size: 15px; }
.diff { font: 12.5px/1.5 ui-monospace, Consolas, monospace; background: var(--code); border-radius: 8px; padding: 8px; overflow-x: auto; white-space: pre-wrap; overflow-wrap: anywhere; max-height: 480px; overflow-y: auto; }
.diff .a { background: var(--add); display: block; }
.diff .d { background: var(--del); display: block; }
.diff .c { display: block; color: var(--muted); }
.list { list-style: none; padding: 0; margin: 0; }
.list > li { padding: 10px 0; border-bottom: 1px solid var(--line); }
.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
.secret { font-family: ui-monospace, Consolas, monospace; font-size: 13px; background: var(--code); padding: 10px; border-radius: 8px; overflow-wrap: anywhere; white-space: pre-wrap; }
.warnbox { border: 1px solid var(--warn); background: color-mix(in srgb, var(--warn) 10%, transparent); border-radius: 10px; padding: 10px 14px; }
#toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--ink); color: var(--bg); padding: 8px 16px; border-radius: 8px; opacity: 0; transition: opacity .2s; pointer-events: none; max-width: 90vw; }
#toast.show { opacity: 1; }
.login { max-width: 360px; margin: 12vh auto; }
.empty { text-align: center; padding: 40px; color: var(--muted); }
.st-idea { background: var(--s-idea); } .st-planning { background: var(--s-planning); } .st-active { background: var(--s-active); }
.st-paused { background: var(--s-paused); } .st-testing { background: var(--s-testing); } .st-released { background: var(--s-released); }
.st-maintenance { background: var(--s-maintenance); } .st-archived { background: var(--s-archived); }