:root {
  color-scheme: light;
  --desk: #EEF1F4;
  --sheet: #FFFFFF;
  --ink: #1F2A37;
  --pencil: #8A94A3;
  --rule: #E3E7EC;
  --mark: #FFE36E;
  --done: #5E8C6A;
  --blue: #2F5D8A;
  --blue-soft: #EAF0F7;
  --warn: #B4532A;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --gutter: 92px;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body { font: 15px/1.6 var(--sans); color: var(--ink); background: var(--desk); font-variant-numeric: tabular-nums; }
button, input, textarea { font: inherit; color: inherit; }
[hidden] { display: none !important; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.muted { color: var(--pencil); }
.small { font-size: 12px; }
.err { color: var(--warn); min-height: 1.4em; margin: 0; }
code, kbd { font-family: inherit; background: var(--desk); border-radius: 3px; padding: 0 4px; font-size: 12px; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

.btn { border: 1px solid var(--rule); background: var(--sheet); border-radius: 6px; padding: 5px 12px; cursor: pointer; text-decoration: none; display: inline-block; }
.btn:hover { border-color: var(--pencil); }
.btn.primary { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn.primary:disabled { opacity: .4; cursor: default; }
.btn.ghost { border-color: transparent; color: var(--blue); }
.link { border: 0; background: none; color: var(--pencil); cursor: pointer; padding: 0; text-decoration: underline; }

/* login */
.login { position: fixed; inset: 0; display: grid; place-items: center; }
.login-card { background: var(--sheet); padding: 40px 36px; border-radius: 10px; width: 320px; display: grid; gap: 12px; box-shadow: 0 1px 0 var(--rule); }
.login-card .brand { font-size: 32px; margin: 0; }
.login-card p { margin: 0; }
.login-card input { border: 1px solid var(--rule); border-radius: 6px; padding: 8px 10px; }

/* shell */
.shell { display: grid; grid-template-columns: 228px minmax(0, 1fr) 340px; height: 100vh; }
.side { padding: 20px 16px; display: flex; flex-direction: column; gap: 18px; overflow-y: auto; }
.brand { font-weight: 700; font-size: 20px; letter-spacing: .08em; }
.nav { display: grid; gap: 2px; }
.nav button { text-align: left; border: 0; background: none; padding: 6px 10px; border-radius: 6px; cursor: pointer; }
.nav button:hover { background: rgba(0,0,0,.04); }
.nav button.on { background: var(--sheet); font-weight: 600; }
.side-foot { margin-top: auto; display: grid; gap: 10px; }
.keys div { margin: 2px 0; }

/* mini calendar */
.cal { background: var(--sheet); border-radius: 8px; padding: 10px; }
.cal-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; font-weight: 600; font-size: 13px; }
.cal-head button { border: 0; background: none; cursor: pointer; color: var(--pencil); padding: 2px 6px; }
.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 2px; text-align: center; font-size: 12px; }
.cal-grid .wd { color: var(--pencil); font-size: 11px; }
.cal-grid button { border: 0; background: none; border-radius: 4px; padding: 3px 0; cursor: pointer; position: relative; }
.cal-grid button:hover { background: var(--desk); }
.cal-grid button.out { color: #C3CAD3; }
.cal-grid button.today { background: var(--mark); font-weight: 700; }
.cal-grid button.has::after { content: ""; position: absolute; left: 50%; bottom: 1px; width: 3px; height: 3px; margin-left: -1.5px; border-radius: 50%; background: var(--pencil); }
.cal-grid button.open::after { background: var(--warn); }

/* main + views */
.main { background: var(--sheet); overflow: hidden; display: flex; flex-direction: column; border-left: 1px solid var(--rule); border-right: 1px solid var(--rule); }
.view { display: none; flex: 1; min-height: 0; flex-direction: column; }
.view.on { display: flex; }
.pad { padding: 24px 32px; overflow-y: auto; }
.narrow { max-width: 760px; }
.row { display: flex; gap: 10px; align-items: center; margin: 10px 0; flex-wrap: wrap; }
.row input[type=number] { width: 90px; border: 1px solid var(--rule); border-radius: 6px; padding: 4px 8px; }
textarea, input[type=search] { width: 100%; border: 1px solid var(--rule); border-radius: 6px; padding: 8px 10px; background: var(--sheet); resize: vertical; }
h2 { font-size: 17px; margin: 28px 0 6px; }
h2:first-child { margin-top: 0; }

/* notebook */
.nb-bar { display: flex; justify-content: space-between; align-items: center; padding: 10px 24px; border-bottom: 1px solid var(--rule); }
.nb-title { font-weight: 600; }
.scroller { flex: 1; overflow-y: auto; padding: 0 24px 40vh; scroll-behavior: auto; }
.sentinel { height: 1px; }
.month { margin: 28px 0 4px var(--gutter); font-size: 13px; color: var(--pencil); font-weight: 600; }
.day { display: grid; grid-template-columns: var(--gutter) minmax(0, 1fr); border-top: 1px solid var(--rule); padding: 8px 0 6px; }
.day .g { padding-top: 1px; cursor: pointer; user-select: none; }
.day .g .n { font-size: 22px; line-height: 1.1; font-weight: 700; display: inline-block; padding: 0 4px; border-radius: 3px; }
.day .g .w { font-size: 12px; color: var(--pencil); margin-left: 4px; }
.day .g .lb { display: block; font-size: 12px; color: var(--blue); margin: 2px 0 0 4px; cursor: text; min-height: 1em; max-width: 84px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.day .g .lb:empty::before { content: "＋标注"; color: transparent; }
.day:hover .g .lb:empty::before { color: #C3CAD3; }
.day.today .g .n { background: var(--mark); }
.day.weekend .g .w { color: var(--warn); }
.day.future.empty .g .n, .day.past.empty .g .n { color: #C3CAD3; font-weight: 500; font-size: 17px; }
.day .body { min-width: 0; }

.ln { display: flex; align-items: flex-start; gap: 6px; padding: 1px 0; position: relative; border-radius: 4px; }
.ln:hover { background: #FAFBFC; }
.ln .k { flex: none; width: 48px; display: flex; justify-content: flex-end; align-items: center; gap: 4px; padding-top: 3px; color: var(--pencil); font-size: 13px; }
.ln .ck { width: 15px; height: 15px; border: 1.5px solid #B9C1CC; border-radius: 50%; background: none; padding: 0; cursor: pointer; flex: none; }
.ln .ck:hover { border-color: var(--done); }
.ln.done .ck { background: var(--done); border-color: var(--done); box-shadow: inset 0 0 0 2px #fff; }
.ln .num { min-width: 14px; text-align: right; }
.ln .t { flex: 1; min-width: 0; outline: none; white-space: pre-wrap; word-break: break-word; padding: 1px 2px; }
.ln.ghost .t:empty::before { content: attr(data-ph); color: transparent; }
.day.today .ln.ghost .t:empty::before, .day:hover .ln.ghost .t:empty::before,
.ln.ghost .t:focus:empty::before, .day.open .ln.ghost .t:empty::before { color: #C3CAD3; }
.ln.sub { padding-left: 54px; }
.ln.sub .k { width: 12px; }
.ln.sub .k::before { content: ""; width: 5px; height: 1px; background: var(--pencil); margin-top: 8px; }
.ln.sub .t { color: #4B5563; font-size: 14px; }
.ln.done .t { color: var(--pencil); }
.ln.moved .t { text-decoration: line-through; color: var(--pencil); }
.ln .tm { font-weight: 600; }
.ln .chips { display: flex; gap: 4px; flex-wrap: wrap; padding-top: 2px; flex: none; max-width: 40%; }
.chip { font-size: 12px; border-radius: 10px; padding: 0 8px; background: var(--blue-soft); color: var(--blue); border: 0; cursor: pointer; white-space: nowrap; }
.chip.place { background: #F1F3F5; color: #5B6573; cursor: default; }
.chip.go { background: none; color: var(--pencil); text-decoration: underline; }
.chip.ai { background: none; color: var(--pencil); cursor: default; padding: 0 2px; }
.ln .ops { position: absolute; right: 0; top: 0; display: none; gap: 2px; background: var(--sheet); padding: 0 2px; }
.ln:hover .ops, .ln:focus-within .ops { display: flex; }
.ln.ghost .t { cursor: text; }
.day.empty { padding: 4px 0 2px; }
.day.empty .ln.ghost { min-height: 0; }
.ops button { border: 0; background: none; color: var(--pencil); cursor: pointer; font-size: 12px; padding: 2px 6px; border-radius: 4px; }
.ops button:hover { background: var(--desk); color: var(--ink); }
.ops input[type=date] { font-size: 12px; border: 1px solid var(--rule); border-radius: 4px; }

/* carry-over */
.carry { margin: 2px 0 8px 54px; border-left: 3px solid var(--mark); padding: 4px 10px; background: #FFFCEB; border-radius: 0 6px 6px 0; }
.carry summary { cursor: pointer; font-size: 13px; }
.carry .ci { display: flex; gap: 8px; align-items: baseline; font-size: 14px; padding: 2px 0; }
.carry .ci .d { color: var(--pencil); font-size: 12px; width: 44px; flex: none; }
.carry .ci .b { flex: 1; min-width: 0; }
.carry .ci button { border: 0; background: none; color: var(--blue); cursor: pointer; font-size: 12px; padding: 0 2px; }
.carry .all { margin-top: 4px; }

/* assistant */
.assist { display: flex; flex-direction: column; min-height: 0; }
.ctx { padding: 16px; border-bottom: 1px solid var(--rule); max-height: 45vh; overflow-y: auto; }
.ctx h3 { margin: 0 0 4px; font-size: 16px; }
.ctx .meta { font-size: 12px; color: var(--pencil); margin-bottom: 8px; }
.ctx ul { margin: 6px 0 0; padding-left: 16px; font-size: 13px; }
.ctx li { margin: 2px 0; }
.ctx .sec { font-size: 12px; color: var(--pencil); margin-top: 10px; }
.chat { flex: 1; display: flex; flex-direction: column; min-height: 0; }
.msgs { flex: 1; overflow-y: auto; padding: 12px 16px; display: flex; flex-direction: column; gap: 8px; }
.msg { max-width: 92%; padding: 6px 10px; border-radius: 8px; font-size: 14px; white-space: pre-wrap; word-break: break-word; }
.msg.user { align-self: flex-end; background: var(--ink); color: #fff; }
.msg.assistant { align-self: flex-start; background: var(--sheet); }
.msg .act { display: flex; gap: 6px; align-items: baseline; font-size: 12px; color: var(--pencil); margin-top: 4px; border-top: 1px dashed var(--rule); padding-top: 4px; }
.msg .act button { border: 0; background: none; color: var(--blue); cursor: pointer; font-size: 12px; padding: 0; }
.msg.wait { color: var(--pencil); }
.chat-in { display: flex; gap: 8px; padding: 12px 16px; border-top: 1px solid var(--rule); align-items: flex-end; }
.chat-in textarea { resize: none; }

/* people */
.pp { display: grid; grid-template-columns: 260px minmax(0, 1fr); flex: 1; min-height: 0; }
.pp-list { border-right: 1px solid var(--rule); padding: 16px; overflow-y: auto; display: flex; flex-direction: column; gap: 8px; }
.pp-list .pi { display: flex; justify-content: space-between; border: 0; background: none; text-align: left; padding: 6px 8px; border-radius: 6px; cursor: pointer; width: 100%; }
.pp-list .pi:hover, .pp-list .pi.on { background: var(--desk); }
.pp-list .pi small { color: var(--pencil); }
.pp-detail { padding: 24px 32px; overflow-y: auto; }
.pp-detail h2 { font-size: 22px; margin: 0 0 12px; }
.fields { display: grid; grid-template-columns: 70px minmax(0, 1fr); gap: 6px 10px; align-items: center; max-width: 520px; font-size: 14px; }
.fields input, .fields textarea { border: 1px solid var(--rule); border-radius: 6px; padding: 4px 8px; width: 100%; }
.profile { background: var(--desk); border-radius: 8px; padding: 12px 14px; white-space: pre-wrap; font-size: 14px; max-width: 680px; }
.tl { max-width: 680px; }
.tl .tli { display: grid; grid-template-columns: 90px minmax(0, 1fr); gap: 8px; padding: 4px 0; border-bottom: 1px solid var(--rule); font-size: 14px; cursor: pointer; }
.tl .tli:hover { background: #FAFBFC; }
.tl .tli .d { color: var(--pencil); }
.tl .tli.future .d { color: var(--blue); font-weight: 600; }
.empty { color: var(--pencil); }
.sres .tli { cursor: pointer; }

/* import preview */
.prev { font-size: 14px; border: 1px solid var(--rule); border-radius: 8px; padding: 10px 14px; max-height: 360px; overflow-y: auto; }
.prev .pd { color: var(--pencil); font-size: 12px; margin-top: 6px; }
.prev .sub { padding-left: 20px; color: #4B5563; }

/* toasts + jump */
.toasts { position: fixed; right: 360px; bottom: 20px; display: grid; gap: 8px; z-index: 10; }
.toast { background: var(--ink); color: #fff; padding: 10px 14px; border-radius: 8px; font-size: 14px; max-width: 360px; display: flex; gap: 10px; align-items: baseline; }
.toast button { border: 0; background: none; color: var(--mark); cursor: pointer; padding: 0; }
.jump { border: 0; border-radius: 10px; padding: 16px 18px; width: 340px; box-shadow: 0 10px 40px rgba(31,42,55,.18); }
.jump label { display: block; font-size: 13px; color: var(--pencil); margin-bottom: 6px; }
.jump input { width: 100%; border: 1px solid var(--rule); border-radius: 6px; padding: 8px 10px; font-size: 16px; }
.jump::backdrop { background: rgba(31,42,55,.15); }

@media (max-width: 1100px) {
  .shell { grid-template-columns: 200px minmax(0, 1fr) 300px; }
  .toasts { right: 320px; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }