:root,:root[data-theme=light]{--bg: #f4f1ea;--bg-gradient: radial-gradient(120% 80% at 50% -10%, #fbf8f1 0%, #f4f1ea 60%);--surface: #fffefb;--surface-2: #ede9df;--surface-3: #e3ded2;--text: #1c1a17;--text-2: #6b665c;--text-3: #9a9387;--border: #e4dfd4;--border-strong: #cfc8ba;--input-bg: #ffffff;--input-border: #cfc8ba;--primary: #2f6f5e;--primary-ink: #ffffff;--primary-soft: #dfeae4;--primary-glow: rgba(47, 111, 94, .16);--accent: #c0563b;--accent-ink: #ffffff;--danger: #c0563b;--danger-soft: #f7e3dc;--success: #2f6f5e;--success-soft: #dfeae4;--warn: #b7791f;--warn-soft: #f6ead3;--owe: #c0563b;--owed: #2f6f5e;--radius: 14px;--radius-sm: 10px;--shadow: 0 1px 2px rgba(28, 26, 23, .04), 0 6px 18px -8px rgba(28, 26, 23, .12);--tabbar-h: 60px;--topbar-h: 52px;--safe-b: env(safe-area-inset-bottom, 0px);--safe-t: env(safe-area-inset-top, 0px);color-scheme:light}:root[data-theme=dark]{--bg: #293241;--bg-gradient: radial-gradient(120% 80% at 50% -10%, #2f3a4b 0%, #293241 60%);--surface: #323d50;--surface-2: #3c485d;--surface-3: #46536a;--text: #e0fbfc;--text-2: #98c1d9;--text-3: #7d99b4;--border: #44506a;--border-strong: #56637d;--input-bg: #222a38;--input-border: #56637d;--primary: #98c1d9;--primary-ink: #293241;--primary-soft: #3d5a80;--primary-glow: rgba(152, 193, 217, .22);--accent: #ee6c4d;--accent-ink: #ffffff;--danger: #f28b70;--danger-soft: #4a3a3f;--success: #7fcbbf;--success-soft: #2f4a52;--warn: #e6c178;--warn-soft: #46465a;--owe: #f28b70;--owed: #98c1d9;--shadow: 0 1px 2px rgba(10, 14, 22, .3), 0 8px 24px -10px rgba(10, 14, 22, .5);color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);background-image:var(--bg-gradient);background-attachment:fixed;color:var(--text);font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,Inter,PingFang TC,Noto Sans TC,Helvetica 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.title{flex:1;min-width:0;font-size:1.05rem;font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;text-align:center}.topbar .title.left{text-align:left;padding-left:8px}.icon-btn{appearance:none;border:0;background:transparent;width:40px;height:40px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:1.15rem;cursor:pointer;color:var(--text)}.icon-btn:active{background:var(--surface-2)}.text-btn{appearance:none;border:0;background:transparent;color:var(--primary);font-weight:650;padding:8px 10px;border-radius:var(--radius-sm);cursor:pointer;min-width:44px}.text-btn:disabled{opacity:.45}.tabbar{position:fixed;left:0;right:0;bottom:0;z-index:20;display:grid;grid-template-columns:repeat(4,1fr);height:calc(var(--tabbar-h) + var(--safe-b));padding-bottom:var(--safe-b);background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:saturate(1.4) blur(10px);border-top:1px 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8px;font-size:.78rem;color:var(--text-3);letter-spacing:.02em}.row{display:flex;align-items:center;gap:10px}.row.between{justify-content:space-between}.grow{flex:1;min-width:0}.muted{color:var(--text-2)}.small{font-size:.85rem}.tiny{font-size:.75rem}.mono{font-variant-numeric:tabular-nums}.ellipsis{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.owe{color:var(--owe)}.owed{color:var(--owed)}.amount{font-variant-numeric:tabular-nums;font-weight:650}.btn{appearance:none;border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:var(--radius-sm);padding:12px 16px;font-weight:650;cursor:pointer;min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn.primary{background:linear-gradient(180deg,color-mix(in srgb,var(--primary) 92%,white) 0%,var(--primary) 100%);border-color:var(--primary);color:var(--primary-ink);box-shadow:0 6px 16px -8px 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auto}.avatar.sm{width:26px;height:26px;font-size:.85rem}.avatar.lg{width:56px;height:56px;font-size:1.7rem}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}.field>label{font-size:.82rem;font-weight:650;color:var(--text-2);padding:0 2px}.input,.select,.textarea{appearance:none;width:100%;border:1.5px solid var(--input-border);background:var(--input-bg);color:var(--text);border-radius:var(--radius-sm);padding:12px 14px;font-size:16px;min-height:46px;outline:none;box-shadow:inset 0 1px 2px #0f1b2d0f;transition:border-color .15s ease,box-shadow .15s ease}.input::placeholder,.textarea::placeholder{color:var(--text-3)}.input:focus,.select:focus,.textarea:focus{border-color:var(--primary);box-shadow:inset 0 1px 2px #0f1b2d0f,0 0 0 3px var(--primary-glow)}.select{background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 18px) 55%,calc(100% - 13px) 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.label{font-size:.75rem;color:var(--text-2);font-weight:600}.stat .value{font-size:1.15rem;font-weight:700;font-variant-numeric:tabular-nums}.bar{height:8px;border-radius:999px;background:var(--surface-2);overflow:hidden}.bar>i{display:block;height:100%;background:var(--primary);border-radius:999px}.code-box{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:1.1rem;letter-spacing:.08em;background:var(--surface-2);padding:10px 14px;border-radius:var(--radius-sm);text-align:center;-webkit-user-select:all;user-select:all;word-break:break-all}.qr{display:flex;justify-content:center;padding:8px}.qr img,.qr canvas{width:220px;height:220px;border-radius:12px;background:#fff;padding:8px}.theme-toggle{display:inline-grid;grid-auto-flow:column;background:var(--surface-2);border:1px solid var(--border);border-radius:999px;padding:2px;gap:2px}.theme-toggle button{appearance:none;border:0;background:transparent;color:var(--text-3);height:30px;padding:0 10px;border-radius:999px;cursor:pointer;font-size:.8rem;font-weight:600;display:inline-flex;align-items:center;gap:4px}.theme-toggle button.active{background:var(--surface);color:var(--text);box-shadow:var(--shadow)}.sheet-backdrop{position:fixed;inset:0;z-index:60;background:#00000073;display:flex;align-items:flex-end;justify-content:center}.sheet{width:100%;max-width:640px;background:var(--surface);border-radius:18px 18px 0 0;padding:16px 16px calc(16px + var(--safe-b));box-shadow:0 -8px 30px #00000040}