:root {
  --paper: #F3ECDF;
  --paper-2: #E8DDC8;
  --card: #FBF7EF;
  --ink: #2B2621;
  --ink-2: #6B6157;
  --ink-3: #A2978A;
  --rust: #A4472E;
  --rust-soft: #ECD3C6;
  --ochre: #B9822B;
  --ochre-soft: #F0E0BC;
  --moss: #5B6438;
  --moss-soft: #DCDFC6;
  --clay: #7A5136;
  --line: rgba(43, 38, 33, 0.12);
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--paper);
  color: var(--ink);
  font: 14px/1.6 -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
}
a { color: inherit; }
button, input, select, textarea { font: inherit; color: inherit; }

/* layout */
.app { display: flex; min-height: 100vh; }
.side {
  width: 220px; flex-shrink: 0; background: var(--ink); color: #EFE6D6;
  display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh;
}
.brand { padding: 26px 22px 20px; border-bottom: 1px solid rgba(239, 230, 214, 0.08); }
.brand .t { font-family: var(--serif); font-size: 22px; font-weight: 700; letter-spacing: 6px; }
.brand .s { font-size: 11px; letter-spacing: 3px; color: rgba(239, 230, 214, 0.45); margin-top: 4px; }
.nav { padding: 12px 10px; flex: 1; overflow: auto; }
.nav .grp { font-size: 11px; letter-spacing: 3px; color: rgba(239, 230, 214, 0.35); padding: 14px 12px 6px; }
.nav a {
  display: flex; align-items: center; padding: 9px 12px; border-radius: 6px; text-decoration: none;
  color: rgba(239, 230, 214, 0.75); margin-bottom: 2px; transition: background .15s;
}
.nav a:hover { background: rgba(239, 230, 214, 0.06); }
.nav a.on { background: rgba(217, 174, 92, 0.16); color: #F3DFAF; }
.nav a .mk { width: 6px; height: 6px; border-radius: 1px; background: currentColor; opacity: .5; margin-right: 12px; transform: rotate(45deg); }
.nav a.on .mk { background: #D9AE5C; opacity: 1; }
.nav a .badge { margin-left: auto; background: var(--rust); color: #fff; font-size: 11px; border-radius: 10px; padding: 0 7px; }
.side-foot { padding: 14px 18px; border-top: 1px solid rgba(239, 230, 214, 0.08); font-size: 12px; color: rgba(239, 230, 214, 0.55); }
.side-foot .who { color: #EFE6D6; font-weight: 600; }
.side-foot a { cursor: pointer; text-decoration: underline; margin-right: 10px; }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.top {
  display: flex; align-items: center; padding: 16px 32px; border-bottom: 1px solid var(--line);
  background: rgba(243, 236, 223, 0.92); position: sticky; top: 0; z-index: 5; backdrop-filter: blur(4px);
}
.top h1 { font-family: var(--serif); font-size: 20px; margin: 0; letter-spacing: 2px; }
.top .crumb { color: var(--ink-3); font-size: 12px; margin-left: 12px; }
.top .right { margin-left: auto; display: flex; align-items: center; gap: 16px; }
.mode-pill { font-size: 12px; padding: 3px 10px; border-radius: 12px; background: var(--ochre-soft); color: var(--clay); }
.mode-pill.formal { background: var(--moss-soft); color: var(--moss); }
.content { padding: 24px 32px 60px; }

/* elements */
.grid { display: grid; gap: 16px; }
.g4 { grid-template-columns: repeat(4, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 1200px) { .g4 { grid-template-columns: repeat(2, 1fr); } .g3 { grid-template-columns: 1fr 1fr; } }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 18px 20px; overflow-x: auto; min-width: 0; }
.card h3 { font-family: var(--serif); font-size: 16px; margin: 0 0 12px; display: flex; align-items: center; }
.card h3 .sub { font-family: inherit; font-weight: 400; font-size: 12px; color: var(--ink-3); margin-left: 10px; }
.card h3 .act { margin-left: auto; }
.kpi .n { font-family: var(--serif); font-size: 34px; font-weight: 700; line-height: 1.1; }
.kpi .l { color: var(--ink-2); font-size: 12px; letter-spacing: 2px; }
.kpi .d { color: var(--ink-3); font-size: 12px; margin-top: 4px; }
.kpi.rust .n { color: var(--rust); }
.kpi.moss .n { color: var(--moss); }
.kpi.ochre .n { color: var(--ochre); }
.mt { margin-top: 16px; }
.muted { color: var(--ink-2); }
.faint { color: var(--ink-3); }
.small { font-size: 12px; }
.row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.sp { flex: 1; }
.note { background: var(--ochre-soft); color: var(--clay); padding: 10px 14px; border-radius: 8px; font-size: 13px; line-height: 1.7; }
.note.moss { background: var(--moss-soft); color: var(--moss); }
.note.rust { background: var(--rust-soft); color: var(--rust); }

.btn {
  display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; border-radius: 6px; cursor: pointer;
  border: 1px solid var(--ink); background: var(--ink); color: var(--paper); font-size: 13px; white-space: nowrap;
}
.btn:hover { opacity: .9; }
.btn.ghost { background: transparent; color: var(--ink); }
.btn.rust { background: var(--rust); border-color: var(--rust); }
.btn.sm { padding: 3px 10px; font-size: 12px; }
.btn[disabled] { opacity: .4; cursor: not-allowed; }
input.in, select.in, textarea.in {
  border: 1px solid var(--line); background: #FFFDF8; border-radius: 6px; padding: 7px 10px; outline: none; min-width: 0;
}
input.in:focus, select.in:focus, textarea.in:focus { border-color: var(--ink-2); }
textarea.in { width: 100%; min-height: 70px; resize: vertical; }
label.chk { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; user-select: none; }
label.chk input { accent-color: var(--rust); }

table.t { width: 100%; border-collapse: collapse; font-size: 13px; }
table.t th { text-align: left; font-weight: 600; color: var(--ink-2); padding: 9px 10px; border-bottom: 1px solid var(--line); background: rgba(232, 221, 200, 0.4); white-space: nowrap; }
table.t td { padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.t tr:hover td { background: rgba(232, 221, 200, 0.25); }
table.t td.num, table.t th.num { text-align: right; font-variant-numeric: tabular-nums; }
.tag { display: inline-block; padding: 1px 8px; border-radius: 10px; font-size: 12px; background: var(--paper-2); color: var(--ink-2); margin: 1px 2px 1px 0; }
.tag.A { background: var(--rust-soft); color: var(--rust); }
.tag.B { background: var(--moss-soft); color: var(--moss); }
.tag.test { background: var(--ochre-soft); color: var(--clay); }
.tag.ok { background: var(--moss-soft); color: var(--moss); }
.tag.warn { background: var(--rust-soft); color: var(--rust); }
.days { display: inline-flex; gap: 3px; }
.days i { width: 16px; height: 16px; border-radius: 3px; background: var(--paper-2); font-style: normal; font-size: 10px; display: inline-flex; align-items: center; justify-content: center; color: var(--ink-3); }
.days i.on { background: var(--ink); color: #D9AE5C; }
.link { color: var(--rust); cursor: pointer; text-decoration: underline; }
.pager { display: flex; gap: 6px; align-items: center; justify-content: flex-end; margin-top: 12px; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 16px; flex-wrap: wrap; }
.tabs a { padding: 8px 14px; text-decoration: none; color: var(--ink-2); border-bottom: 2px solid transparent; cursor: pointer; }
.tabs a.on { color: var(--ink); border-bottom-color: var(--rust); font-weight: 600; }

/* answer rendering */
.ans { display: grid; grid-template-columns: 120px 1fr; gap: 6px 14px; font-size: 13px; }
.ans .k { color: var(--ink-3); }
.ans .v { white-space: pre-wrap; }
.piece { background: #FFFDF8; border: 1px solid var(--line); border-radius: 6px; padding: 8px 10px; margin-bottom: 6px; }
.piece b { font-family: var(--serif); }
.story { font-family: var(--serif); white-space: pre-wrap; line-height: 1.9; background: #FFFDF8; padding: 14px; border-radius: 8px; border-left: 4px solid var(--ochre); }
details summary { cursor: pointer; color: var(--ink-2); font-size: 12px; }
pre.json { background: #2B2621; color: #E9DFC9; padding: 12px; border-radius: 8px; overflow: auto; max-height: 360px; font-size: 12px; }

.items-grid { display: grid; grid-template-columns: 40px 1fr 60px 60px 60px 160px; gap: 0; font-size: 13px; }
.items-grid > div { padding: 8px 6px; border-bottom: 1px solid var(--line); }
.items-grid .h { color: var(--ink-2); font-weight: 600; background: rgba(232, 221, 200, 0.4); }
.dist { display: flex; height: 14px; border-radius: 3px; overflow: hidden; background: var(--paper-2); }
.dist span { display: block; height: 100%; }

.resp { display: grid; grid-template-columns: repeat(12, 1fr); gap: 3px; }
.resp .c { text-align: center; border-radius: 4px; padding: 4px 0; font-size: 12px; background: var(--paper-2); }
.resp .c.rev { outline: 1px dashed var(--rust); }
.resp .c b { display: block; font-size: 14px; }

/* login */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background:
  radial-gradient(ellipse at 20% 0%, rgba(164, 71, 46, 0.25), transparent 50%), radial-gradient(ellipse at 90% 100%, rgba(217, 174, 92, 0.2), transparent 50%), #1E1A16; }
.login { width: 380px; background: var(--card); border-radius: 14px; padding: 36px 34px; box-shadow: 0 30px 60px rgba(0, 0, 0, 0.35); }
.login .t { font-family: var(--serif); font-size: 28px; font-weight: 700; letter-spacing: 8px; }
.login .s { color: var(--ink-3); font-size: 12px; letter-spacing: 3px; margin: 4px 0 26px; }
.login .f { display: flex; flex-direction: column; gap: 12px; }
.login .in { padding: 10px 12px; }
.login .btn { justify-content: center; padding: 10px; font-size: 15px; letter-spacing: 4px; }
.err { color: var(--rust); font-size: 13px; min-height: 18px; }

.toast { position: fixed; top: 20px; left: 50%; transform: translateX(-50%); background: var(--ink); color: var(--paper); padding: 10px 18px; border-radius: 8px; z-index: 99; font-size: 13px; box-shadow: 0 10px 30px rgba(0,0,0,.2); animation: tin .25s ease; }
@keyframes tin { from { opacity: 0; transform: translate(-50%, -10px); } }
.modal-bg { position: fixed; inset: 0; background: rgba(30, 26, 22, 0.45); z-index: 50; display: flex; align-items: center; justify-content: center; }
.modal { background: var(--card); border-radius: 12px; padding: 22px 24px; width: 520px; max-width: 92vw; max-height: 86vh; overflow: auto; }
.modal h3 { font-family: var(--serif); margin: 0 0 14px; }

.chart svg { display: block; width: 100%; }
.chart text { font-size: 11px; fill: var(--ink-2); }
.legend { display: flex; gap: 14px; font-size: 12px; color: var(--ink-2); margin-top: 6px; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 5px; vertical-align: -1px; }
.empty { color: var(--ink-3); text-align: center; padding: 30px 0; }
.form-grid { display: grid; grid-template-columns: 180px 1fr; gap: 12px 16px; align-items: center; }
.form-grid .lab { color: var(--ink-2); }
.form-grid .hint { grid-column: 2; font-size: 12px; color: var(--ink-3); margin-top: -6px; }