:root{--bg: #f6f4ef;--surface: #ffffff;--surface-2: #efece5;--text: #1b2420;--muted: #66706b;--line: #e4e0d7;--accent: #0e7c66;--accent-ink: #ffffff;--accent-soft: #dcefe9;--pos: #0e7c66;--neg: #c2463a;--neg-soft: #f8e3df;--gold: #f2b544;--shadow: 0 1px 2px rgb(20 30 25 / 6%), 0 4px 16px rgb(20 30 25 / 5%);--radius: 16px;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px);color-scheme:light}@media(prefers-color-scheme:dark){:root{--bg: #101614;--surface: #18201d;--surface-2: #222c28;--text: #e9eeeb;--muted: #93a09a;--line: #2b3632;--accent: #3dbe9c;--accent-ink: #052019;--accent-soft: #1b3a32;--pos: #4fd1ae;--neg: #f08a7e;--neg-soft: #3b2421;--shadow: 0 1px 2px rgb(0 0 0 / 30%);color-scheme:dark}}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.45 system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;overscroll-behavior-y:none}h1,h2,h3{margin:0;line-height:1.2}a{color:var(--accent)}button,input,select{font:inherit;color:inherit}img{max-width:100%;display:block}[hidden]{display:none!important}.page{max-width:600px;margin:0 auto;padding:calc(var(--safe-top) + 8px) 16px calc(var(--safe-bottom) + 32px);min-height:100dvh}.page.has-fab{padding-bottom:calc(var(--safe-bottom) + 104px)}.topbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:8px;margin:0 -16px 8px;padding:calc(var(--safe-top) + 8px) 12px 8px;margin-top:calc(-8px - var(--safe-top));background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:saturate(1.4) blur(12px);-webkit-backdrop-filter:saturate(1.4) blur(12px)}.topbar-title{flex:1;min-width:0;text-align:center}.topbar-title 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.15s;user-select:none}.btn:active:not(:disabled){transform:scale(.98)}.btn:disabled{opacity:.55;cursor:default}.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:transparent}.btn.danger{background:var(--neg);color:#fff;border-color:transparent}.btn.ghost{background:transparent;border-color:transparent;color:var(--accent)}.btn.danger-ghost{background:transparent;border-color:var(--line);color:var(--neg)}.btn.small{min-height:36px;padding:0 12px;font-size:.9rem;border-radius:10px}.btn.block{display:flex;width:100%}.btn-row{display:flex;gap:8px}.btn-row .btn{flex:1}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border:0;border-radius:12px;background:transparent;color:var(--text);cursor:pointer;flex-shrink:0}.icon-btn:active{background:var(--surface-2)}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.fab{position:fixed;right:max(16px,calc(50vw - 284px));bottom:calc(var(--safe-bottom) + 20px);z-index:20;display:flex;align-items:center;gap:8px;padding:0 20px 0 16px;height:56px;border-radius:18px;background:var(--accent);color:var(--accent-ink);font-weight:650;text-decoration:none;box-shadow:0 6px 20px #0e7c6659}.fab:active{transform:scale(.97)}.section{margin-top:18px}.section-title{font-size:.8rem;font-weight:650;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0 6px 8px}.stack{display:flex;flex-direction:column;gap:10px}.stack-sm{display:flex;flex-direction:column;gap:8px}.card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--line)}.list{list-style:none;margin:0;padding:0;overflow:hidden}.list>li+li{border-top:1px solid var(--line)}.row{display:flex;align-items:center;gap:12px;padding:12px 14px;min-height:60px;width:100%}.link-row{color:inherit;text-decoration:none;background:none;border:0;text-align:left;cursor:pointer}.link-row:active{background:var(--surface-2)}.row-main{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}.row-title{font-weight:560;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.row-sub{font-size:.84rem;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.row-sub.wrap{white-space:normal}.row-end{display:flex;flex-direction:column;align-items:flex-end;gap:2px;text-align:right}.row-end small{font-size:.78rem}.row-amount{font-weight:650;white-space:nowrap}.tag{display:inline-block;margin-left:6px;padding:1px 7px;border-radius:99px;background:var(--accent-soft);color:var(--accent);font-size:.72rem;font-weight:650;vertical-align:2px}.avatar{--h: 168;flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;font-weight:700;background:hsl(var(--h) 55% 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.row{align-items:flex-start}.activity-text{color:inherit;text-decoration:none}a.activity-text:active{text-decoration:underline}.tabs{display:flex;gap:4px;padding:4px;background:var(--surface-2);border-radius:14px}.tabs a{flex:1;text-align:center;padding:9px 4px;border-radius:10px;text-decoration:none;color:var(--muted);font-weight:600;font-size:.94rem}.tabs a.active{background:var(--surface);color:var(--text);box-shadow:var(--shadow)}.segmented{display:inline-flex;padding:3px;background:var(--surface-2);border-radius:11px;gap:2px}.segmented button{border:0;background:transparent;padding:6px 11px;border-radius:8px;font-size:.88rem;font-weight:600;color:var(--muted);cursor:pointer}.segmented button.active{background:var(--surface);color:var(--text);box-shadow:var(--shadow)}.form{display:flex;flex-direction:column;gap:14px}.card.form{padding:16px}.form>.card+.card{margin-top:0}.field{display:flex;flex-direction:column;gap:6px;flex:1;min-width:0}.field>span,.field-label{font-size:.85rem;font-weight:600;color:var(--muted)}.field-row{display:flex;gap:12px}input,select{width:100%;min-height:46px;padding:10px 12px;border-radius:12px;border:1px solid var(--line);background:var(--bg);outline:none;transition:border-color .15s,box-shadow .15s}input:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}input[aria-invalid=true]{border-color:var(--neg)}input[type=checkbox]{width:22px;height:22px;min-height:0;accent-color:var(--accent);margin:0;flex-shrink:0}.amount-input{font-size:1.6rem;font-weight:700;font-variant-numeric:tabular-nums}.code-input{font-size:1.4rem;font-weight:700;letter-spacing:.15em;text-align:center;font-family:ui-monospace,SF Mono,Menlo,monospace}.input-row{display:flex;gap:8px;align-items:center}.input-row input{flex:1}.input-row .btn{flex-shrink:0}.error-text{color:var(--neg);background:var(--neg-soft);padding:10px 12px;border-radius:12px;margin:0;font-size:.92rem}.split-head{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap}.split-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}.split-row{display:flex;align-items:center;gap:10px;padding:8px 0;border-top:1px solid var(--line);min-height:52px}.split-row:first-child{border-top:0}.split-row.off .split-check span:last-child{color:var(--muted)}.split-check{display:flex;align-items:center;gap:10px;flex:1;min-width:0;cursor:pointer}.split-check span:last-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.split-input{display:flex;align-items:center;gap:4px}.split-input input{width:76px;min-height:38px;padding:6px 8px;text-align:right}.split-input .unit{font-size:.75rem;color:var(--muted);width:34px}.split-amount{width:82px;text-align:right;font-variant-numeric:tabular-nums;font-weight:600;font-size:.92rem}.hint{display:flex;align-items:center;gap:6px;margin:-2px 6px 10px;color:var(--muted);font-size:.84rem}.split-remaining{margin:0;font-weight:600;font-size:.9rem;text-align:right}.receipt-preview{display:flex;align-items:center;gap:12px}.receipt-preview img{width:84px;height:84px;object-fit:cover;border-radius:12px;border:1px solid var(--line)}.receipt-full{display:block;overflow:hidden;padding:0}.receipt-full img{width:100%;max-height:70vh;object-fit:contain;background:var(--surface-2)}.detail-head{text-align:center;padding:18px 0 6px}.detail-amount{font-size:2.3rem;font-weight:750;letter-spacing:-.02em;display:block}.detail-head p{margin:4px 0 0}.invite-code{font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:1.8rem;font-weight:750;letter-spacing:.12em;text-align:center;padding:6px 0;user-select:all}.invite-code span{margin-left:.4em}.switch{position:relative;width:50px;height:30px;border-radius:99px;border:0;background:var(--line);cursor:pointer;flex-shrink:0;transition:background .2s}.switch span{position:absolute;top:3px;left:3px;width:24px;height:24px;border-radius:50%;background:#fff;box-shadow:0 1px 3px #00000040;transition:transform .2s}.switch.on{background:var(--accent)}.switch.on span{transform:translate(20px)}.center-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:48px 16px;text-align:center}.empty{text-align:center;padding:40px 20px}.empty-icon{width:60px;height:60px;margin:0 auto 12px;border-radius:20px;display:flex;align-items:center;justify-content:center;background:var(--accent-soft);color:var(--accent)}.empty h3{font-size:1.05rem;margin-bottom:4px}.spinner{width:28px;height:28px;border:3px solid var(--accent-soft);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;display:inline-block}.spinner.small{width:18px;height:18px;border-width:2px;border-color:currentColor;border-top-color:transparent;opacity:.8}@keyframes spin{to{transform:rotate(360deg)}}.toasts{position:fixed;left:0;right:0;bottom:calc(var(--safe-bottom) + 88px);z-index:100;display:flex;flex-direction:column;align-items:center;gap:8px;pointer-events:none;padding:0 16px}.toast{pointer-events:auto;max-width:520px;padding:12px 16px;border-radius:12px;background:#1f2925;color:#f2f5f3;box-shadow:0 8px 24px #00000040;font-size:.93rem;animation:toast-in .2s ease-out}.toast.error{background:var(--neg);color:#fff}@keyframes toast-in{0%{opacity:0;transform:translateY(8px)}}.dialog{border:0;padding:0;border-radius:20px;background:var(--surface);color:var(--text);width:min(420px,calc(100vw - 32px));box-shadow:0 20px 60px #0000004d}.dialog::backdrop{background:#0a0f0d73}.dialog-body{padding:20px;display:flex;flex-direction:column;gap:12px}.dialog-body h2{font-size:1.15rem}.dialog-text{color:var(--muted)}.dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:4px}@media(max-width:380px){.summary{grid-template-columns:1fr 1fr}.summary>div:first-child{grid-column:1 / -1}.split-input input{width:64px}.split-amount{width:70px}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}