:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1c2026;
  --muted: #6b7380;
  --line: #e2e5ea;
  --soft: #eef0f3;
  --accent: #1f6feb;
  --accent-soft: #e6efff;
  --group: #7a3fd1;
  --group-soft: #f1e9fd;
  --all: #0f7c6e;
  --all-soft: #e2f4f1;
  --warn: #b25e00;
  --warn-soft: #fff3e0;
  --pos: #11804a;
  --neg: #c0362c;
  --neg-soft: #fdecea;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .06);
  --radius: 12px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317; --card: #1b1e24; --text: #e8eaee; --muted: #9aa2ae; --line: #2c3139; --soft: #242830;
    --accent: #5b9bff; --accent-soft: #1d2b44; --group: #b48cf2; --group-soft: #2c2240;
    --all: #43c2ae; --all-soft: #15312d; --warn: #f0a849; --warn-soft: #3a2a12;
    --pos: #4cc685; --neg: #ff7b70; --neg-soft: #3b1f1d; --shadow: none; color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); }
body {
  font: 15px/1.45 -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: var(--accent); }
.num { font-variant-numeric: tabular-nums; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.hidden { display: none !important; }

.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }

/* 顶栏 */
.top { position: sticky; top: 0; z-index: 20; background: var(--card); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; gap: 8px; min-height: 54px; }
.top h1 { font-size: 17px; margin: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.top .t { flex: 1; min-width: 0; }
.top .sub { font-size: 12px; color: var(--muted); }
.iconbtn { border: 0; background: transparent; padding: 6px 8px; border-radius: 8px; font-size: 15px; color: var(--accent); }
.iconbtn:hover { background: var(--soft); }
.back { font-size: 26px; line-height: 1; text-decoration: none; padding: 0 6px 4px 0; }
.pill { font-size: 12px; padding: 3px 8px; border-radius: 999px; background: var(--soft); color: var(--muted); white-space: nowrap; }
.pill.saving { color: var(--accent); background: var(--accent-soft); }
.pill.offline, .pill.error { color: var(--neg); background: var(--neg-soft); }
.pill.view { color: var(--warn); background: var(--warn-soft); }

/* 底部导航 */
.tabs { position: fixed; bottom: 0; left: 0; right: 0; z-index: 30; background: var(--card); border-top: 1px solid var(--line); padding-bottom: env(safe-area-inset-bottom); }
.tabs .wrap { display: flex; padding: 0; }
.tabs button { flex: 1; border: 0; background: none; padding: 9px 0 8px; font-size: 13px; color: var(--muted); display: flex; flex-direction: column; align-items: center; gap: 1px; position: relative; }
.tabs button b { font-size: 15px; font-weight: 600; }
.tabs button.on { color: var(--accent); }
.tabs button.on::before { content: ""; position: absolute; top: 0; left: 30%; right: 30%; height: 2px; background: var(--accent); border-radius: 2px; }
.tabs button b { position: relative; }
.tabs .badge { position: absolute; top: -6px; left: 100%; margin-left: 2px; background: var(--warn); color: #fff; font-size: 10px; font-weight: 600; border-radius: 999px; padding: 0 5px; line-height: 15px; }
/* main 同时有 .wrap 类，这里提高优先级，避免 .wrap 的 padding 把底部留白覆盖掉 */
main.wrap { padding-top: 12px; padding-bottom: calc(150px + env(safe-area-inset-bottom)); }

/* 通用 */
.card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--line); padding: 14px; margin-bottom: 12px; }
.card h2 { font-size: 16px; margin: 0 0 10px; }
.card h3 { font-size: 14px; margin: 14px 0 6px; color: var(--muted); font-weight: 600; }
.btn { border: 1px solid var(--line); background: var(--card); padding: 9px 14px; border-radius: 10px; font-weight: 500; }
.btn:hover { background: var(--soft); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.05); }
.btn.danger { color: var(--neg); }
.btn.block { width: 100%; }
.btn.sm { padding: 5px 10px; font-size: 13px; border-radius: 8px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.row { display: flex; gap: 8px; align-items: center; }
.row.wrap-ok { flex-wrap: wrap; }
.grow { flex: 1; min-width: 0; }
.input, select.input, textarea.input { width: 100%; border: 1px solid var(--line); background: var(--card); border-radius: 10px; padding: 9px 11px; min-width: 0; }
.input:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
label.f { display: block; font-size: 13px; color: var(--muted); margin: 10px 0 4px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 10px; }
.notice { border-radius: 10px; padding: 10px 12px; font-size: 14px; margin-bottom: 12px; }
.notice.warn { background: var(--warn-soft); color: var(--warn); }
.notice.ok { background: var(--all-soft); color: var(--all); }
.notice.err { background: var(--neg-soft); color: var(--neg); }
.notice ul { margin: 6px 0 0; padding-left: 18px; }
.empty { text-align: center; color: var(--muted); padding: 30px 10px; }

/* 头像 */
.av { --h: 210; display: inline-flex; align-items: center; justify-content: center; width: 22px; height: 22px; border-radius: 50%; font-size: 12px; font-weight: 600; color: #fff; background: hsl(var(--h) 55% 48%); flex: none; }
.av.lg { width: 30px; height: 30px; font-size: 14px; }

/* 认领页 */
.claimbar { position: sticky; top: 54px; z-index: 10; background: var(--bg); padding: 10px 0 8px; margin-top: -12px; }
.me { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.mechip { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line); background: var(--card); border-radius: 999px; padding: 4px 10px 4px 5px; font-weight: 500; }
.mechip.none { padding: 6px 12px; color: var(--accent); border-color: var(--accent); }
.mysum { margin-left: auto; text-align: right; font-size: 13px; color: var(--muted); }
.mysum b { color: var(--text); font-size: 15px; }
.searchrow { display: flex; gap: 8px; }
.searchrow .input { padding: 8px 11px; }
.filters { display: flex; gap: 8px; margin-top: 8px; }
.filters select { flex: 1; min-width: 0; padding: 7px 8px; font-size: 14px; }
.seg { display: flex; background: var(--soft); border-radius: 10px; padding: 3px; gap: 3px; margin-top: 8px; }
.seg button { flex: 1; border: 0; background: transparent; padding: 7px 4px; border-radius: 8px; font-size: 14px; color: var(--muted); white-space: nowrap; }
.seg button.on { background: var(--card); color: var(--text); font-weight: 600; box-shadow: var(--shadow); }
.seg button .c { font-size: 12px; opacity: .8; margin-left: 2px; }
.sumline { display: flex; align-items: center; gap: 6px 8px; font-size: 13px; color: var(--muted); margin: 2px 0 8px; flex-wrap: wrap; }
.sumline .warnt { color: var(--warn); font-weight: 600; }
.group-h { display: flex; justify-content: space-between; font-size: 13px; color: var(--muted); margin: 14px 2px 6px; font-weight: 600; }

.item { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 8px; box-shadow: var(--shadow); border-left: 4px solid var(--line); }
.item.k-unclaimed { border-left: 4px dashed var(--warn); }
.item.k-single { border-left-color: var(--accent); }
.item.k-group { border-left-color: var(--group); }
.item.k-all { border-left-color: var(--all); }
.item.sel { outline: 2px solid var(--accent); background: var(--accent-soft); }
.item-main { display: flex; gap: 10px; padding: 10px 12px 4px; cursor: pointer; align-items: flex-start; }
.item-main .chk { width: 22px; height: 22px; border-radius: 6px; border: 2px solid var(--line); flex: none; margin-top: 1px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 14px; }
.item.sel .chk { background: var(--accent); border-color: var(--accent); }
.names { flex: 1; min-width: 0; }
.zh { font-weight: 600; font-size: 15px; word-break: break-word; }
.qty { display: inline-block; font-size: 12px; font-weight: 600; padding: 0 6px; border-radius: 6px; background: var(--soft); color: var(--muted); margin-left: 4px; vertical-align: 1px; }
.raw { font-size: 12px; color: var(--muted); word-break: break-word; }
.price { text-align: right; font-weight: 700; font-size: 16px; white-space: nowrap; }
.adj { font-size: 11px; font-weight: 400; color: var(--muted); }
.item-foot { display: flex; align-items: center; gap: 8px; padding: 2px 12px 10px; }
.owner { display: inline-flex; align-items: center; gap: 5px; font-size: 13px; font-weight: 600; padding: 3px 9px 3px 4px; border-radius: 999px; min-width: 0; max-width: 100%; cursor: pointer; border: 0; }
.owner .lbl { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.owner .avs { display: inline-flex; }
.owner .avs .av { width: 20px; height: 20px; font-size: 11px; margin-right: -5px; border: 2px solid var(--card); }
.owner .avs .av:last-child { margin-right: 0; }
.owner.k-unclaimed { background: var(--warn-soft); color: var(--warn); padding-left: 9px; border: 1px dashed var(--warn); }
.owner.k-single { background: var(--accent-soft); color: var(--accent); }
.owner.k-group { background: var(--group-soft); color: var(--group); }
.owner.k-all { background: var(--all-soft); color: var(--all); padding-left: 9px; }
.myshare { font-size: 12px; color: var(--muted); white-space: nowrap; }
.quick { margin-left: auto; border: 1px solid var(--accent); color: var(--accent); background: transparent; border-radius: 999px; padding: 4px 12px; font-size: 13px; font-weight: 600; white-space: nowrap; }
.quick.out { border-color: var(--line); color: var(--muted); }
.fab { position: fixed; right: max(16px, calc(50% - 364px)); bottom: calc(70px + env(safe-area-inset-bottom)); z-index: 25; border: 0; border-radius: 999px; background: var(--accent); color: #fff; padding: 12px 18px; font-weight: 600; box-shadow: 0 4px 14px rgba(31, 111, 235, .35); }

.batchbar { position: fixed; left: 0; right: 0; bottom: calc(56px + env(safe-area-inset-bottom)); z-index: 26; background: var(--text); color: var(--bg); }
.batchbar .wrap { display: flex; align-items: center; gap: 8px; padding-top: 10px; padding-bottom: 10px; flex-wrap: wrap; }
.batchbar .btn { background: transparent; color: var(--bg); border-color: rgba(255, 255, 255, .35); }
.batchbar .btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }

/* 底部弹层 */
.overlay { position: fixed; inset: 0; background: rgba(10, 14, 20, .45); z-index: 50; display: flex; align-items: flex-end; justify-content: center; }
.sheet { background: var(--card); width: 100%; max-width: 560px; max-height: 92vh; overflow-y: auto; border-radius: 16px 16px 0 0; padding: 8px 16px calc(16px + env(safe-area-inset-bottom)); }
@media (min-width: 700px) { .overlay { align-items: center; } .sheet { border-radius: 16px; max-height: 86vh; } }
.sheet .grab { width: 40px; height: 4px; border-radius: 4px; background: var(--line); margin: 2px auto 10px; }
.sheet-h { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 12px; }
.sheet-h .t { flex: 1; min-width: 0; }
.sheet-h h2 { margin: 0; font-size: 18px; word-break: break-word; }
.sheet-h .close { border: 0; background: var(--soft); border-radius: 50%; width: 30px; height: 30px; font-size: 16px; flex: none; }
.modes { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; margin-bottom: 14px; }
.modes button { border: 1px solid var(--line); background: var(--card); border-radius: 10px; padding: 8px 2px; font-size: 14px; display: flex; flex-direction: column; align-items: center; gap: 2px; }
.modes button small { font-size: 11px; color: var(--muted); }
.modes button.on { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.people { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 8px; }
.person { display: flex; align-items: center; gap: 8px; border: 1px solid var(--line); background: var(--card); border-radius: 10px; padding: 10px; text-align: left; font-weight: 500; min-width: 0; }
.person span.n { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.person.on { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); }
.person .tick { font-size: 14px; }
.hint { font-size: 13px; color: var(--muted); margin: 10px 0; }
.preview { background: var(--soft); border-radius: 10px; padding: 8px 12px; margin: 12px 0; font-size: 14px; }
.preview .r { display: flex; justify-content: space-between; padding: 2px 0; }
.stepper { display: flex; align-items: center; gap: 8px; padding: 6px 0; border-bottom: 1px solid var(--line); }
.stepper .n { flex: 1; }
.stepper button { width: 32px; height: 32px; border-radius: 8px; border: 1px solid var(--line); background: var(--card); font-size: 18px; line-height: 1; }
.stepper .v { width: 34px; text-align: center; font-weight: 600; }
.linkbtn { border: 0; background: none; color: var(--accent); padding: 6px 0; font-size: 14px; }
.sheet-foot { display: flex; gap: 8px; flex-wrap: wrap; border-top: 1px solid var(--line); margin-top: 16px; padding-top: 12px; }
.final-calc { font-size: 14px; background: var(--soft); border-radius: 10px; padding: 8px 12px; margin-top: 12px; }

/* 结算页 */
.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
@media (min-width: 600px) { .stats { grid-template-columns: repeat(4, 1fr); } }
.stat { background: var(--soft); border-radius: 10px; padding: 8px 10px; }
.stat .k { font-size: 12px; color: var(--muted); }
.stat .v { font-size: 17px; font-weight: 700; }
.stat.warn .v { color: var(--warn); }
.mrow { border-top: 1px solid var(--line); padding: 10px 0; }
.mrow:first-of-type { border-top: 0; }
.mrow-h { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.mrow-h .nm { font-weight: 600; }
.mrow-h .det { font-size: 12px; color: var(--muted); }
.net { margin-left: auto; text-align: right; font-weight: 700; white-space: nowrap; }
.net small { display: block; font-size: 11px; font-weight: 500; }
.net.pay { color: var(--neg); }
.net.get { color: var(--pos); }
.mitems { margin: 8px 0 0 40px; font-size: 13px; }
.mitems .r { display: flex; gap: 8px; padding: 3px 0; border-bottom: 1px dashed var(--line); }
.mitems .r .grow { overflow: hidden; text-overflow: ellipsis; }
.xfer { display: flex; align-items: center; gap: 8px; padding: 8px 0; border-top: 1px solid var(--line); font-weight: 500; flex-wrap: wrap; }
.xfer:first-of-type { border-top: 0; }
.xfer .arrow { color: var(--muted); }
.xfer .amt { margin-left: auto; font-weight: 700; }
.lrow { display: flex; align-items: center; gap: 8px; padding: 8px 0; border-top: 1px solid var(--line); }
.lrow:first-of-type { border-top: 0; }

/* 小票页 */
.diff-ok { color: var(--pos); font-weight: 600; }
.diff-bad { color: var(--neg); font-weight: 600; }
.kv { display: flex; justify-content: space-between; font-size: 14px; padding: 3px 0; }

/* 记录 */
.log { display: flex; gap: 10px; padding: 9px 0; border-top: 1px solid var(--line); font-size: 14px; align-items: flex-start; }
.log:first-of-type { border-top: 0; }
.log .when { font-size: 12px; color: var(--muted); }
.log.undone .s { text-decoration: line-through; color: var(--muted); }

/* 导入预览 */
.imp-col { display: flex; gap: 8px; align-items: center; padding: 5px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.imp-col .h { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.imp-col .ex { font-size: 12px; color: var(--muted); }
.imp-col select { width: 46%; flex: none; padding: 6px; font-size: 13px; }
.imp-row { padding: 6px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
.imp-row.skip { color: var(--muted); }
.imp-row .w { color: var(--warn); font-size: 12px; }

/* 首页 */
.hero { padding: 26px 0 8px; }
.hero h1 { margin: 0; font-size: 24px; }
.billrow { display: flex; align-items: center; gap: 10px; padding: 11px 0; border-top: 1px solid var(--line); text-decoration: none; color: inherit; }
.billrow:first-of-type { border-top: 0; }

.toast { position: fixed; left: 50%; transform: translateX(-50%); bottom: calc(130px + env(safe-area-inset-bottom)); z-index: 60; background: var(--text); color: var(--bg); padding: 10px 14px; border-radius: 10px; font-size: 14px; display: flex; gap: 12px; align-items: center; max-width: calc(100% - 32px); box-shadow: 0 6px 20px rgba(0, 0, 0, .25); }
.toast.error { background: var(--neg); color: #fff; }
.toast button { border: 0; background: transparent; color: var(--accent-soft); font-weight: 700; padding: 0; white-space: nowrap; }