:root{--paper: #f7f1e5;--paper-deep: #efe6d4;--card: #fffdf7;--ink: #2c251a;--ink-soft: #6d6353;--line: #d9cdb6;--persimmon: #c14f28;--persimmon-soft: #f3ddd2;--teal: #2f6d5e;--teal-soft: #dcebe4;--danger: #a63a2b;--shadow: 4px 4px 0 rgba(44, 37, 26, .16);--font-display: "Noto Serif TC", serif;--font-body: "Noto Sans TC", sans-serif;--font-num: "IBM Plex Mono", monospace}*{box-sizing:border-box}body{margin:0;color:var(--ink);font-family:var(--font-body);background-color:var(--paper);background-image:radial-gradient(rgba(44,37,26,.045) 1px,transparent 1px),linear-gradient(180deg,rgba(193,79,40,.03),transparent 240px);background-size:22px 22px,100% 100%;min-height:100vh}.shell{max-width:1040px;margin:0 auto;padding:0 20px 60px;display:flex;flex-direction:column;min-height:100vh}.masthead{padding-top:28px;border-bottom:2px solid var(--ink)}.masthead-inner{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}.brand{display:flex;align-items:baseline;gap:10px}.brand-mark{font-size:28px}.brand-name{font-family:var(--font-display);font-weight:900;font-size:26px;letter-spacing:2px}.whoami{display:flex;align-items:center;gap:10px}.whoami-name{font-weight:700;color:var(--teal)}.nav{display:flex;gap:4px;margin-top:14px;overflow-x:auto}.nav-link{font-family:var(--font-display);font-weight:700;font-size:15px;letter-spacing:1px;color:var(--ink-soft);text-decoration:none;padding:8px 14px 10px;border:2px solid transparent;border-bottom:none;border-radius:10px 10px 0 0;white-space:nowrap;transition:color .15s}.nav-link:hover{color:var(--persimmon)}.nav-link.active{color:var(--persimmon);background:var(--card);border-color:var(--ink);position:relative;top:2px}.page{flex:1;padding-top:30px}.footer{text-align:center;color:var(--ink-soft);font-size:13px;letter-spacing:2px;padding-top:44px}.page-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:20px}.page-title{font-family:var(--font-display);font-weight:900;font-size:28px;margin:0;letter-spacing:2px}.page-title:after{content:"";display:block;width:46px;height:4px;margin-top:6px;background:var(--persimmon)}.head-group{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.head-total,.pool-total{color:var(--ink-soft)}.head-total strong,.pool-total strong{font-family:var(--font-num);font-size:20px;color:var(--persimmon);margin-left:4px}.month-picker{font-family:var(--font-num);font-size:14px;padding:8px 10px;border:2px solid var(--ink);border-radius:8px;background:var(--card);box-shadow:var(--shadow)}.stat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}.stat-card{background:var(--card);border:2px solid var(--ink);border-radius:12px;box-shadow:var(--shadow);padding:18px;display:flex;flex-direction:column;gap:6px}.stat-accent{background:var(--persimmon);color:#fff8ef}.stat-accent .stat-hint,.stat-accent .stat-label{color:#fff8efd9}.stat-label{font-size:13px;letter-spacing:2px;color:var(--ink-soft)}.stat-value{font-family:var(--font-num);font-weight:700;font-size:30px;line-height:1.1}.stat-hint{font-size:12px;color:var(--ink-soft)}.tip{margin-top:24px;padding:14px 16px;border:2px dashed var(--line);border-radius:12px;color:var(--ink-soft);font-size:14px;line-height:1.7;background:var(--paper-deep)}.card-list{display:flex;flex-direction:column;gap:16px;margin-bottom:28px}.ledger-card{background:var(--card);border:2px solid var(--ink);border-radius:12px;box-shadow:var(--shadow);padding:18px 20px}.ledger-card-head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}.ledger-card-name{font-family:var(--font-display);font-size:20px;font-weight:700;margin:0}.ledger-card-actions{display:flex;gap:8px;align-items:center}.ledger-card-meta{color:var(--ink-soft);font-size:13px;margin:6px 0 14px;padding-bottom:12px;border-bottom:1px dashed var(--line)}.bill-row{display:flex;align-items:flex-end;gap:16px;flex-wrap:wrap}.add-panel{background:var(--paper-deep);border:2px solid var(--ink);border-radius:12px;box-shadow:var(--shadow);padding:18px 20px;margin-bottom:28px}.add-title{font-family:var(--font-display);font-size:16px;letter-spacing:2px;margin:0 0 14px}.form-row{display:flex;align-items:flex-end;gap:14px;flex-wrap:wrap}.field{display:flex;flex-direction:column;gap:6px;flex:1;min-width:150px}.field-sm{flex:0 1 130px;min-width:110px}.field-inline{flex:0 1 220px}.field>span{font-size:12px;letter-spacing:1px;color:var(--ink-soft)}.field input,.field select{font-family:var(--font-body);font-size:15px;padding:9px 12px;border:2px solid var(--ink);border-radius:8px;background:var(--card);color:var(--ink)}.field input:focus,.field select:focus,.month-picker:focus{outline:3px solid var(--persimmon-soft);border-color:var(--persimmon)}.field input[type=number]{font-family:var(--font-num)}.checkbox{display:flex;align-items:center;gap:8px;padding-bottom:10px;cursor:pointer}.checkbox input{width:18px;height:18px;accent-color:var(--persimmon)}.stack{display:flex;flex-direction:column;gap:14px}.btn{font-family:var(--font-body);font-weight:700;font-size:14px;padding:10px 18px;border-radius:8px;border:2px solid var(--ink);background:var(--card);color:var(--ink);cursor:pointer;box-shadow:var(--shadow);transition:transform .08s,box-shadow .08s}.btn:active{transform:translate(3px,3px);box-shadow:0 0 #0000}.btn:disabled{opacity:.6;cursor:wait}.btn-primary{background:var(--persimmon);color:#fff8ef}.btn-ghost{border-color:transparent;box-shadow:none;background:transparent;color:var(--ink-soft)}.btn-ghost:hover{color:var(--persimmon)}.btn-danger-ghost{border-color:transparent;box-shadow:none;background:transparent;color:var(--danger);padding:6px 10px}.btn-danger-ghost:hover{background:#f6e3df}.btn-block{width:100%}.chip{font-size:12px;font-weight:700;padding:5px 10px;border-radius:999px;border:1.5px solid var(--ink);cursor:pointer;background:var(--card)}.chip-on{background:var(--teal-soft);color:var(--teal);border-color:var(--teal)}.chip-off{background:var(--paper-deep);color:var(--ink-soft);border-color:var(--line)}.table-wrap{background:var(--card);border:2px solid var(--ink);border-radius:12px;box-shadow:var(--shadow);overflow-x:auto}.ledger-table{width:100%;border-collapse:collapse;font-size:14px}.ledger-table th{font-family:var(--font-display);font-size:13px;letter-spacing:2px;text-align:left;color:var(--ink-soft);padding:12px 14px;border-bottom:2px solid var(--ink);white-space:nowrap}.ledger-table td{padding:11px 14px;border-bottom:1px dashed var(--line)}.ledger-table tr:last-child td{border-bottom:none}.ledger-table .num{font-family:var(--font-num);font-weight:700;white-space:nowrap}.tag{display:inline-block;font-size:12px;padding:3px 9px;border-radius:999px;background:var(--teal-soft);color:var(--teal);border:1px solid var(--teal)}.empty{text-align:center;color:var(--ink-soft);padding:22px!important}.tabs{display:flex;gap:8px;margin-bottom:20px;flex-wrap:wrap}.tab{font-family:var(--font-display);font-weight:700;font-size:15px;padding:9px 16px;border:2px solid var(--ink);border-radius:999px;background:var(--card);cursor:pointer;box-shadow:var(--shadow)}.tab.active{background:var(--teal);color:#f2f8f5}.pool-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:16px}.byuser{display:flex;gap:16px;font-size:14px;color:var(--ink-soft)}.byuser-item strong{font-family:var(--font-num);color:var(--teal)}.login-scene{min-height:100vh;display:grid;place-items:center;padding:20px}.login-card{width:100%;max-width:400px;background:var(--card);border:2px solid var(--ink);border-radius:16px;box-shadow:8px 8px #2c251a2e;padding:34px 30px}.login-head{text-align:center;margin-bottom:24px}.login-emoji{font-size:44px}.login-title{font-family:var(--font-display);font-weight:900;font-size:28px;letter-spacing:3px;margin:10px 0 6px}.login-sub{color:var(--ink-soft);font-size:14px;margin:0}.settings-block{background:var(--card);border:2px solid var(--ink);border-radius:12px;box-shadow:var(--shadow);padding:20px 22px;margin-bottom:20px}.steps{margin:0;padding-left:20px;line-height:2;color:var(--ink-soft)}.steps code{font-family:var(--font-num);background:var(--persimmon-soft);color:var(--persimmon);padding:2px 8px;border-radius:6px}.bind-code-box{border:2px dashed var(--persimmon);border-radius:12px;background:var(--persimmon-soft);padding:14px 18px;text-align:center}.bind-code-box p{margin:4px 0}.bind-code{font-family:var(--font-num);font-weight:700;font-size:24px;letter-spacing:3px;color:var(--persimmon)}.error-text{color:var(--danger);font-weight:700;margin:10px 0}.rise{animation:rise .45s cubic-bezier(.22,1,.36,1) both}@keyframes rise{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}@media(max-width:640px){.page-title{font-size:23px}.form-row{flex-direction:column;align-items:stretch}.field-sm,.field-inline{flex:1;min-width:0}}