:root{
  --bg:#f6f8fb;
  --bg-soft:#ffffff;
  --text:#1f2a44;
  --muted:#63738a;
  --line:#e6e9f0;
  --brand:#2f80ed;
  --brand-2:#56ccf2;
  --ok:#27ae60;
  --warn:#f2c94c;
  --danger:#eb5757;
  --card-shadow: 0 6px 18px rgba(26, 68, 149, .08);
  --radius:16px;
  --radius-sm:12px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font:16px/1.4 "Inter","SF Pro Text","Segoe UI",Roboto,system-ui,-apple-system,"Noto Sans CJK SC","Microsoft Yahei",sans-serif;}
a{color:var(--brand);text-decoration:none}
h1{font-size:28px;margin:0 0 16px}
h2{font-size:22px;margin:0 0 12px}
h3{font-size:18px;margin:0 0 8px}

.nav{
  position:sticky;top:0;z-index:5;
  display:flex;gap:12px;align-items:center;justify-content:flex-end;
  background:linear-gradient(180deg,#fff,rgba(255,255,255,.92) 60%, rgba(255,255,255,.7));
  padding:14px 24px;border-bottom:1px solid var(--line);
  backdrop-filter:saturate(180%) blur(6px);
}
.nav .brand{margin-right:auto;font-weight:700;color:var(--text)}
.tab{padding:10px 16px;border-radius:24px;background:#eff3fb;color:#3b4c74}
.tab.active{background:linear-gradient(90deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 6px 16px rgba(47,128,237,.28)}

.page{max-width:1180px;margin:24px auto;padding:0 16px;}

.card{
  background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--card-shadow);padding:18px;
}
.kpi{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:16px}
.kpi .cell{padding:18px;border-radius:14px;background:#fff;box-shadow:var(--card-shadow);border:1px solid var(--line)}
.kpi .label{font-size:12px;color:var(--muted)}
.kpi .value{font-size:24px;font-weight:800;letter-spacing:.3px;margin-top:6px}

.toolbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:6px 0 12px}
select,input,button{font:inherit}
.input, .select, .btn{height:40px;padding:0 12px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--text)}
.select{min-width:260px}
.btn{background:linear-gradient(90deg,var(--brand),var(--brand-2));color:#fff;border:none;cursor:pointer;box-shadow:0 4px 12px rgba(47,128,237,.2)}
.btn.ghost{background:#fff;border:1px solid var(--line);color:var(--text);box-shadow:none}
.btn.warn{background:linear-gradient(90deg,#f2994a,#f2c94c);color:#333}
.btn.danger{background:linear-gradient(90deg,#eb5757,#f2994a)}
.btn.ok{background:linear-gradient(90deg,#27ae60,#6fcf97)}

.tag{display:inline-flex;align-items:center;height:28px;padding:0 10px;border-radius:999px;background:#eef2fb;color:#335;gap:6px;border:1px solid var(--line);font-size:12px}
.tag.ok{background:#e9fbef;color:#1b6e3b;border-color:#bfe8cf}
.tag.warn{background:#fff8e6;color:#8a5a00;border-color:#f7e3a4}
.tag.muted{background:#f3f5f9;color:#627}

.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
@media(max-width:920px){.kpi{grid-template-columns:repeat(2,1fr)} .grid-3{grid-template-columns:1fr} .grid-4{grid-template-columns:1fr 1fr} .select{min-width:200px}}

.section{margin:18px 0}
.section .title{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.section .desc{color:var(--muted);font-size:13px}

.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:12px;border-bottom:1px dashed var(--line);text-align:left}
.table th{font-size:12px;color:var(--muted)}
.table tr:hover{background:#f9fbff}

.stat{font-weight:700}

/* calendar bullets (compact) */
.calendar{border-top:1px solid var(--line)}
.calendar .row{display:flex;align-items:center;gap:14px;padding:10px 0;border-bottom:1px dashed var(--line)}
.calendar .meta{min-width:340px;color:#455}
.calendar .dots{display:grid;grid-template-columns:repeat(31,16px);gap:6px;align-items:center}
.dot{width:8px;height:8px;border-radius:50%;background:#cbd6ea;opacity:.8;transition:all .15s}
.dot.active{background:var(--brand)}
.dot.weekend{opacity:.9;box-shadow:0 0 0 2px rgba(47,128,237,.08) inset}
.legend{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:12px;margin-top:6px}
.legend .dot{transform:translateY(1px)}

/* receipt form layout */
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.form-grid .full{grid-column:1/-1}
.input{display:flex;align-items:center;gap:8px}
.input input{width:100%;border:0;outline:none;background:transparent}
.input .addon{color:var(--muted);font-size:13px}

/* small helpers */
.mono{font-variant-numeric:tabular-nums}
.small{font-size:12px;color:var(--muted)}
.badge{font-size:12px;padding:4px 8px;border-radius:999px;background:#eef2fb;border:1px solid var(--line);}
.card-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
hr.sep{border:0;border-top:1px solid var(--line);margin:12px 0}

/* --- v2.5.4 layout fixes --- */
/* Center the '开始演示' buttons */
.toolbar.center{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;align-items:center}

/* Input label alignment */
.input{display:flex;align-items:center;gap:8px}
.input .addon{min-width:72px;white-space:nowrap;text-align:right;color:var(--muted)}

/* Larger gaps for dense forms */
.form-grid.gap-lg{gap:18px}
.form-grid .col-3{grid-column:span 3}
.form-grid .col-2{grid-column:span 2}
.form-grid .col-1{grid-column:span 1}

/* Cards grouping for 管理新增 / 管理编辑 */
.card.stack + .card.stack{margin-top:16px}

/* Current rental spacing */
.info-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.info-grid .span-2{grid-column:span 2}
.info-grid .span-3{grid-column:span 3}
.info-grid .span-6{grid-column:1/-1}

/* Calendar left column wider & clearer */
.cal-row{grid-template-columns:260px repeat(31,30px)}
.acc-sub{display:block}

/* Button alignment fix */
.btn{display:inline-flex;align-items:center;justify-content:center;}

/* Export buttons as pill groups */
.btns-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.btns-row .btn{margin:2px 0}

/* Headings spacing */
.card h2{margin:0 0 8px}

/* Notes */
.note{font-size:12px;color:var(--muted);}

/* --- v2.5.4 layout fixes --- */
/* Center the '开始演示' buttons */
.toolbar.center{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;align-items:center}

/* Input label alignment */
.input{display:flex;align-items:center;gap:8px}
.input .addon{min-width:72px;white-space:nowrap;text-align:right;color:var(--muted)}

/* Larger gaps for dense forms */
.form-grid.gap-lg{gap:18px}
.form-grid .col-3{grid-column:span 3}
.form-grid .col-2{grid-column:span 2}
.form-grid .col-1{grid-column:span 1}

/* Cards grouping for 管理新增 / 管理编辑 */
.card.stack + .card.stack{margin-top:16px}

/* Current rental spacing */
.info-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.info-grid .span-2{grid-column:span 2}
.info-grid .span-3{grid-column:span 3}
.info-grid .span-6{grid-column:1/-1}

/* Calendar left column wider & clearer */
.cal-row{grid-template-columns:260px repeat(31,30px)}
.acc-sub{display:block}

/* Button alignment fix */
.btn{display:inline-flex;align-items:center;justify-content:center;}

/* Export buttons as pill groups */
.btns-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.btns-row .btn{margin:2px 0}

/* Headings spacing */
.card h2{margin:0 0 8px}

/* Notes */
.note{font-size:12px;color:var(--muted);}

/* v2.6 calendar columns */
.cal-row{display:grid;grid-template-columns:260px repeat(31,30px);gap:0;border-bottom:1px solid var(--line)}


/* --- v2.6 calendar strong styles --- */
.calendar{width:100%;overflow:auto;border:1px solid var(--line);border-radius:12px;background:#fff}
.cal-row{border-bottom:1px solid var(--line)}
.cal-row.header{position:sticky;top:0;background:#f9fbff;z-index:1;border-top-left-radius:12px;border-top-right-radius:12px}
.cal-cell{height:32px;display:flex;align-items:center;justify-content:center;border-right:1px dashed #e5eaf3;font-size:12px;color:#4a5872}
.cal-cell.head{font-weight:700;color:#2c3b54}
.cal-cell.left{justify-content:flex-start;padding:6px 10px;gap:4px;color:var(--text);background:#fff}
.acc-name{font-weight:700}
.acc-sub{font-size:12px;color:#7c889e}
.cal-cell.day.free{background:#f1f5fb}              /* 空闲更明显 */
.cal-cell.day.busy{background:#3aa0ff;box-shadow:inset 0 0 0 2px rgba(255,255,255,.6)} /* 租用中更醒目 */
.legend{display:inline-block;width:14px;height:14px;border-radius:4px;vertical-align:middle;margin-right:6px;border:1px solid #d8dfeb}
.legend.free{background:#f1f5fb}
.legend.busy{background:#3aa0ff}