:root{--ink:#13241f;--muted:#65726d;--pine:#173f36;--pine-light:#e5f0eb;--sage:#d5e7d7;--paper:#f7f6f0;--surface:#fffef9;--line:#d9ded7;--danger:#a5352b;--shadow:0 10px 28px rgba(17,48,40,.08);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB",sans-serif;color:var(--ink);background:var(--paper)}
*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;min-width:320px;background:var(--paper)}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #5d9e87;outline-offset:2px}button,input,select{-webkit-tap-highlight-color:transparent}.app-shell{width:min(720px,100%);margin:auto;padding:calc(18px + env(safe-area-inset-top)) 16px calc(112px + env(safe-area-inset-bottom))}.auth-view{min-height:85vh;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;max-width:390px;margin:auto}.auth-mark{width:60px;height:60px;border-radius:18px;box-shadow:var(--shadow)}.auth-view h1{font-size:36px;letter-spacing:-.05em;margin:24px 0 8px}.auth-view>p{margin:0;color:var(--muted);line-height:1.6}.auth-form{width:100%;margin-top:30px;display:grid;gap:14px}.auth-form label,.field-grid label,.quick-expense-form label{display:grid;gap:8px;font-size:14px;font-weight:650}.auth-form input,.field-grid input,.expense-main input,select,.month-switcher input,.quick-expense-form input{width:100%;min-height:48px;padding:11px 12px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink)}button{border:0;border-radius:12px;background:var(--pine);color:#fff;min-height:46px;padding:10px 15px;font-weight:700}.form-message{min-height:20px;margin:0;color:var(--danger);font-size:14px}.identity-options{width:100%;display:grid;gap:12px;margin-top:30px}.identity-options button{min-height:76px;padding:14px 16px;background:var(--surface);color:var(--ink);border:1px solid var(--line);text-align:left;box-shadow:var(--shadow)}.identity-options strong,.identity-options span{display:block}.identity-options strong{font-size:19px}.identity-options span{margin-top:4px;color:var(--muted);font-size:13px;font-weight:500}.topbar{position:relative;display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:18px}.topbar h1{font-size:25px;letter-spacing:-.04em;margin:0}.topbar p{margin:5px 0 0;font-size:13px;color:var(--muted)}.icon-button{display:grid;place-items:center;width:44px;min-height:44px;padding:0;background:var(--surface);color:var(--pine);border:1px solid var(--line);font-size:12px}.icon-button svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.menu{position:absolute;z-index:5;right:0;top:50px;width:196px;padding:6px;border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow)}.menu button{width:100%;min-height:40px;padding:8px 10px;color:var(--ink);background:transparent;text-align:left;font-size:14px}.menu button:hover{background:var(--pine-light)}.quick-add,.settlement-card,.ledger-section,.details-section,.migration-notice{background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.quick-add{padding:18px;margin-bottom:16px}.section-title,.list-heading{display:flex;align-items:center;justify-content:space-between;gap:10px}.section-title{margin-bottom:16px}.section-title h2,.list-heading h3{margin:0;font-size:18px;letter-spacing:-.02em}.section-title p{margin:4px 0 0;color:var(--muted);font-size:12px}.section-title>span{color:var(--muted);font-size:12px}.quick-expense-form{display:grid;grid-template-columns:minmax(0,1fr) 110px;gap:12px}.quick-expense-form label:nth-of-type(3),.quick-expense-form button{grid-column:span 2}.quick-expense-form button{margin-top:2px}.month-switcher{display:grid;gap:7px;margin:0 0 16px}.month-switcher>span{font-size:12px;font-weight:650;color:var(--muted)}.month-controls{display:grid;grid-template-columns:40px minmax(0,1fr) 40px;gap:8px;align-items:center}.month-controls .icon-button{width:40px;min-height:40px}.month-controls input{min-width:0;min-height:44px}.settlement-card{padding:20px}.status-chip{display:inline-flex;margin:0;padding:5px 9px;border-radius:999px;background:var(--pine-light);color:var(--pine);font-size:12px;font-weight:750}.settlement-card h2{margin:16px 0 7px;font-size:18px}.settlement-result{margin:0;font-size:clamp(25px,7vw,37px);font-weight:800;line-height:1.16;letter-spacing:-.04em}.carryover-notice{margin:14px 0 0;color:#315d4e;font-size:14px;line-height:1.5}.summary-actions{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:20px;padding-top:16px;border-top:1px solid var(--line)}.paid-toggle{display:flex;align-items:center;gap:9px;font-size:14px;font-weight:650}.paid-toggle input{width:19px;height:19px;accent-color:var(--pine)}.text-button{min-height:auto;padding:6px 0;background:transparent;color:var(--pine);font-size:14px}.danger{color:var(--danger)!important}.metrics{display:grid;grid-template-columns:1fr 1fr;gap:1px;margin:16px 0;background:var(--line);border:1px solid var(--line);border-radius:15px;overflow:hidden}.metrics div{padding:14px;background:var(--surface)}.metrics div:last-child{grid-column:span 2}.metrics span{display:block;font-size:12px;color:var(--muted)}.metrics strong{display:block;margin-top:5px;font-size:18px;font-variant-numeric:tabular-nums}.migration-notice{display:flex;align-items:center;justify-content:space-between;gap:14px;margin:16px 0;padding:15px}.migration-notice p{margin:4px 0 0;color:var(--muted);font-size:13px;line-height:1.45}.migration-notice button{min-height:38px;white-space:nowrap;padding:8px 11px}.migration-notice button:disabled{background:#9bb8ad}.ledger-section{margin-top:16px;padding:18px}.field-grid{display:grid;gap:12px}.two-columns{grid-template-columns:1fr 1fr}.list-heading{margin:22px 0 12px}.add-button{min-height:34px;padding:6px 11px;font-size:13px}.item-list{display:grid;gap:10px}.empty-list{margin:0;color:var(--muted);font-size:14px}.expense-item{padding:12px;border:1px solid var(--line);border-radius:13px;background:#fff}.expense-main{display:grid;grid-template-columns:minmax(0,1fr) 110px;gap:8px}.expense-main input{min-height:42px}.expense-options{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-top:9px}.expense-options select{min-height:36px;padding:5px 8px;font-size:13px}.details-section{margin-top:16px;padding:0}.details-section summary{padding:18px;font-weight:750;cursor:pointer}.detail-metrics{display:flex;gap:20px;padding:0 18px 10px}.detail-metrics p{margin:0;color:var(--muted);font-size:14px}.detail-metrics strong{margin-left:4px;color:var(--ink)}.table-wrap{overflow:auto;border-top:1px solid var(--line)}table{width:100%;border-collapse:collapse;font-size:13px}th,td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}th{color:var(--muted);font-weight:650;white-space:nowrap}tbody tr:last-child td{border-bottom:0}.bottom-tabs{position:fixed;z-index:4;bottom:0;left:0;right:0;display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:10px max(16px,env(safe-area-inset-right)) max(10px,env(safe-area-inset-bottom)) max(16px,env(safe-area-inset-left));background:rgba(247,246,240,.96);border-top:1px solid var(--line);box-shadow:0 -8px 24px rgba(17,48,40,.06)}.tab-button{min-height:48px;padding:7px 12px;background:transparent;color:var(--muted);border-radius:12px}.tab-button.active{background:var(--pine-light);color:var(--pine)}.tab-button small,.tab-button span{display:block}.tab-button small{font-size:10px;font-weight:600}.tab-button:disabled{opacity:.56;background:transparent;color:var(--muted)}::selection{background:#bfe2d5;color:var(--ink)}
@media(min-width:560px){.app-shell{padding-left:24px;padding-right:24px}.metrics{grid-template-columns:repeat(3,1fr)}.metrics div:last-child{grid-column:auto}.settlement-card,.ledger-section,.quick-add{padding:22px}.quick-expense-form{grid-template-columns:1.4fr 120px 1fr auto}.quick-expense-form label:nth-of-type(3),.quick-expense-form button{grid-column:auto}.quick-expense-form button{align-self:end}}
@media(max-width:390px){.expense-main{grid-template-columns:minmax(0,1fr) 90px}.settlement-result{font-size:28px}.migration-notice{align-items:flex-start;flex-direction:column}.migration-notice button{width:100%}}
@media(min-width:430px) and (max-width:460px){.app-shell{padding-left:20px;padding-right:20px}.settlement-card{padding:22px}.settlement-result{font-size:34px}.expense-main{grid-template-columns:minmax(0,1fr) 124px}.ledger-section{padding:20px}}
.bottom-tabs{grid-template-columns:repeat(3,minmax(0,1fr))}
.month-controls{grid-template-columns:36px minmax(0,1fr) 36px;gap:12px;padding:0 2px}.month-controls .icon-button{width:36px;min-width:36px;min-height:40px}.month-input-wrap{min-width:0;overflow:hidden}.month-controls input{display:block;max-width:100%;font-size:16px;padding-right:8px}
.month-input-wrap{display:flex;min-height:44px;border:1px solid var(--line);border-radius:12px;background:#fff}.month-controls input{width:100%;min-width:0;max-width:none;min-height:42px;padding:8px;border:0;border-radius:11px;background:transparent}.auth-form input,.quick-expense-form input,.field-grid input,.expense-main input,.expense-options select{font-size:16px}