:root{--bg: #faf9f7;--card: #ffffff;--line: #e7e2da;--ink: #1c1917;--ink-2: #57534e;--ink-3: #a8a29e;--accent: #0f766e;--danger: #b91c1c}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;font-size:15px;line-height:1.5}button{font:inherit;color:inherit;cursor:pointer}input,textarea,select{font:inherit;color:var(--ink)}.app{max-width:640px;margin:0 auto;min-height:100dvh}.header{position:sticky;top:0;z-index:10;background:#faf9f7eb;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);padding:14px 16px 10px}.header-main{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.header h1{margin:0;font-size:20px;font-weight:700;letter-spacing:.01em}.header-sub{font-size:12px;font-weight:500;color:var(--ink-3);margin-left:4px}.header-stats{margin:2px 0 0;font-size:12.5px;color:var(--ink-2)}.header-actions{display:flex;gap:8px;align-items:center}.btn-add{width:36px;height:36px;border:none;border-radius:50%;background:var(--accent);color:#fff;font-size:22px;line-height:1;display:grid;place-items:center;box-shadow:0 2px 8px #0f766e59}.btn-logout{border:none;background:none;color:var(--ink-3);font-size:12.5px;padding:6px 2px}.chips-row{display:flex;gap:6px;overflow-x:auto;padding:8px 0 2px;scrollbar-width:none}.chips-row::-webkit-scrollbar{display:none}.chip{flex:0 0 auto;border:1px solid var(--line);background:var(--card);color:var(--ink-2);border-radius:999px;padding:5px 12px;font-size:13px;white-space:nowrap}.chip.active{background:var(--ink);border-color:var(--ink);color:#fff}.chip.active[data-loc=st_andrews]{background:#0f766e;border-color:#0f766e}.chip.active[data-loc=edinburgh]{background:#6d28d9;border-color:#6d28d9}.chip.active[data-loc=shuttle]{background:#c2410c;border-color:#c2410c}.chip.active[data-loc=buy_uk]{background:#15803d;border-color:#15803d}.chip.active[data-loc=skip]{background:#78716c;border-color:#78716c}.chip.active[data-owner=zhicheng]{background:#1d4ed8;border-color:#1d4ed8}.chip.active[data-owner=qiaofan]{background:#be185d;border-color:#be185d}.shopping-hint{margin:10px 0 0;font-size:12.5px;color:var(--ink-2)}.error-banner{margin:10px 16px 0;padding:10px 12px;background:#fef2f2;border:1px solid #fecaca;border-radius:10px;color:var(--danger);font-size:13px;display:flex;justify-content:space-between;gap:8px;align-items:center}.error-banner button{border:none;background:none;color:var(--danger);text-decoration:underline}.empty{text-align:center;color:var(--ink-3);padding:48px 16px}.list{padding:6px 12px}.list-bottom-space{height:88px}.cat-section{margin-top:14px}.cat-title{display:flex;justify-content:space-between;align-items:baseline;margin:0 4px 6px;font-size:14px;font-weight:600;color:var(--ink-2)}.cat-count{font-size:12px;color:var(--ink-3);font-weight:400}.item{background:var(--card);border:1px solid var(--line);border-radius:10px;margin-bottom:6px;overflow:hidden}.item.expanded{border-color:#d6cfc4}.item-row{width:100%;display:flex;align-items:center;gap:10px;border:none;background:none;padding:11px 12px;text-align:left}.status-dot{flex:0 0 auto;width:18px;height:18px;border-radius:50%;border:2px solid #d6d3d1;background:transparent;position:relative}.status-dot.s-decided{border-color:#d97706}.status-dot.s-decided:after{content:"";position:absolute;top:3px;right:3px;bottom:3px;left:3px;border-radius:50%;background:#f59e0b}.status-dot.s-bought{border-color:#16a34a}.status-dot.s-bought:after{content:"";position:absolute;top:4px;right:4px;bottom:4px;left:4px;border-radius:50%;background:#22c55e}.status-dot.s-done{border-color:#16a34a;background:#16a34a}.status-dot.s-done:after{content:"✓";position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;color:#fff;font-size:11px;font-weight:700}.item-name{flex:1 1 auto;min-width:0;font-size:14.5px}.item-qty{color:var(--ink-3);font-size:13px}.item-badges{display:flex;gap:4px;flex:0 0 auto}.badge{font-size:11px;padding:2px 7px;border-radius:999px;white-space:nowrap}.badge.loc-pending{background:#fef3c7;color:#b45309}.badge.loc-st_andrews{background:#ccfbf1;color:#0f766e}.badge.loc-edinburgh{background:#ede9fe;color:#6d28d9}.badge.loc-shuttle{background:#ffedd5;color:#c2410c}.badge.loc-buy_uk{background:#dcfce7;color:#15803d}.badge.loc-skip{background:#f5f5f4;color:#78716c}.badge.owner-zhicheng{background:#dbeafe;color:#1d4ed8}.badge.owner-qiaofan{background:#fce7f3;color:#be185d}.badge.owner-both{background:#fef9c3;color:#a16207}.item-edit{padding:4px 12px 12px;border-top:1px dashed var(--line)}.field-group{margin-top:10px}.field-label{display:block;font-size:12px;color:var(--ink-3);margin-bottom:5px}.option-chips{display:flex;flex-wrap:wrap;gap:6px}.opt-chip{border:1px solid var(--line);background:var(--card);color:var(--ink-2);border-radius:8px;padding:6px 10px;font-size:13px}.opt-chip.active{background:var(--ink);border-color:var(--ink);color:#fff}.opt-chip.active[data-loc=st_andrews]{background:#0f766e;border-color:#0f766e}.opt-chip.active[data-loc=edinburgh]{background:#6d28d9;border-color:#6d28d9}.opt-chip.active[data-loc=shuttle]{background:#c2410c;border-color:#c2410c}.opt-chip.active[data-loc=buy_uk]{background:#15803d;border-color:#15803d}.opt-chip.active[data-loc=skip]{background:#78716c;border-color:#78716c}.opt-chip.active[data-loc=pending]{background:#b45309;border-color:#b45309}.opt-chip.active[data-owner=zhicheng]{background:#1d4ed8;border-color:#1d4ed8}.opt-chip.active[data-owner=qiaofan]{background:#be185d;border-color:#be185d}.opt-chip.active[data-owner=both]{background:#a16207;border-color:#a16207}.opt-chip.active[data-status=decided]{background:#d97706;border-color:#d97706}.opt-chip.active[data-status=bought]{background:#16a34a;border-color:#16a34a}.opt-chip.active[data-status=done]{background:#15803d;border-color:#15803d}.edit-field{display:block;margin-top:10px}.edit-field span{display:block;font-size:12px;color:var(--ink-3);margin-bottom:5px}.edit-field input,.edit-field textarea,.edit-field select{width:100%;border:1px solid var(--line);border-radius:8px;padding:8px 10px;background:var(--bg);resize:none}.edit-field input:focus,.edit-field textarea:focus,.edit-field select:focus{outline:2px solid #0f766e33;border-color:var(--accent)}.edit-footer{display:flex;justify-content:space-between;align-items:center;margin-top:12px}.edit-meta{font-size:12px;color:#be185d}.btn-delete{border:none;background:none;color:var(--danger);font-size:13px;padding:6px 4px}.tabbar{position:fixed;bottom:0;left:50%;transform:translate(-50%);width:100%;max-width:640px;display:flex;background:#fffffff2;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}.tab{flex:1;border:none;background:none;padding:12px 0 10px;font-size:14px;color:var(--ink-3);position:relative}.tab.active{color:var(--ink);font-weight:600}.tab-badge{display:inline-grid;place-items:center;min-width:18px;height:18px;margin-left:5px;border-radius:999px;background:#15803d;color:#fff;font-size:11px;font-weight:600;vertical-align:1px}.sheet-mask{position:fixed;top:0;right:0;bottom:0;left:0;background:#1c191766;z-index:20;display:flex;align-items:flex-end;justify-content:center}.sheet{width:100%;max-width:640px;background:var(--card);border-radius:16px 16px 0 0;padding:8px 16px calc(16px + env(safe-area-inset-bottom));max-height:88dvh;overflow-y:auto}.sheet-handle{width:36px;height:4px;border-radius:999px;background:#d6d3d1;margin:4px auto 10px}.sheet h2{margin:0 0 12px;font-size:16px}.sheet-name{width:100%;border:1px solid var(--line);border-radius:8px;padding:10px 12px;background:var(--bg);font-size:15px}.sheet-name:focus{outline:2px solid #0f766e33;border-color:var(--accent)}.sheet-field{display:block;margin-top:14px}.sheet-field>span{display:block;font-size:12px;color:var(--ink-3);margin-bottom:5px}.sheet-field select,.sheet-field input,.sheet-field textarea{width:100%;border:1px solid var(--line);border-radius:8px;padding:8px 10px;background:var(--bg);resize:none}.sheet-row{display:flex;gap:10px}.sheet-row .grow{flex:1}.sheet-actions{display:flex;gap:10px;margin-top:18px}.btn-cancel{flex:1;border:1px solid var(--line);background:var(--card);border-radius:10px;padding:11px 0;font-size:14px;color:var(--ink-2)}.btn-submit{flex:2;border:none;background:var(--accent);color:#fff;border-radius:10px;padding:11px 0;font-size:14px;font-weight:600}.btn-submit:disabled{opacity:.4}.login-wrap{min-height:100dvh;display:grid;place-items:center;padding:24px}.login-card{width:100%;max-width:360px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:32px 24px 24px;text-align:center}.login-card h1{margin:0;font-size:22px}.login-sub{margin:6px 0 24px;color:var(--ink-3);font-size:13px}.login-users{display:flex;gap:10px;justify-content:center;margin-bottom:16px}.user-chip{border:1px solid var(--line);background:var(--card);color:var(--ink-2);border-radius:999px;padding:10px 26px;font-size:15px}.user-chip.active.me-zhicheng{background:#1d4ed8;border-color:#1d4ed8;color:#fff}.user-chip.active.me-qiaofan{background:#be185d;border-color:#be185d;color:#fff}.login-card input{width:100%;border:1px solid var(--line);border-radius:10px;padding:11px 12px;background:var(--bg);text-align:center;letter-spacing:.1em}.login-error{color:var(--danger);font-size:13px;margin:10px 0 0}.login-btn{width:100%;margin-top:16px;border:none;background:var(--ink);color:#fff;border-radius:10px;padding:12px 0;font-size:15px;font-weight:600}.login-btn:disabled{opacity:.4}.login-hint{margin:14px 0 0;font-size:12px;color:var(--ink-3)}.btn-icon{width:34px;height:34px;border:1px solid var(--line);background:var(--card);border-radius:50%;display:grid;place-items:center;font-size:15px;color:var(--ink-2)}.btn-text{border:none;background:none;color:var(--ink-2);font-size:13.5px;padding:6px 2px}.search-row{display:flex;gap:8px;align-items:center;padding:8px 0 2px}.search-row input{flex:1;border:1px solid var(--line);border-radius:8px;padding:8px 10px;background:var(--card);font-size:14px}.search-row input:focus{outline:2px solid #0f766e33;border-color:var(--accent)}.batch-head{display:flex;align-items:center;justify-content:space-between;padding:4px 0}.batch-count{font-size:14.5px;font-weight:600}.check-box{flex:0 0 auto;width:19px;height:19px;border-radius:6px;border:2px solid #d6d3d1;display:inline-grid;place-items:center;font-size:12px;font-weight:700;color:#fff;padding:0}.check-box.checked{background:var(--accent);border-color:var(--accent)}.batch-bar{position:fixed;bottom:0;left:50%;transform:translate(-50%);width:100%;max-width:640px;display:flex;gap:6px;background:#fffffff5;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-top:1px solid var(--line);padding:10px 12px calc(10px + env(safe-area-inset-bottom));z-index:12}.batch-select{flex:1 1 0;min-width:0;border:1px solid var(--line);border-radius:8px;padding:8px 4px;background:var(--card);font-size:13px;color:var(--ink)}.btn-batch-del{flex:0 0 auto;border:none;background:var(--danger);color:#fff;border-radius:8px;padding:8px 14px;font-size:13px;font-weight:600}.btn-batch-del:disabled{opacity:.4}.toast{position:fixed;bottom:calc(64px + env(safe-area-inset-bottom));left:50%;transform:translate(-50%);background:#1c1917eb;color:#fff;padding:9px 18px;border-radius:999px;font-size:13px;z-index:30;max-width:82vw;text-align:center;box-shadow:0 4px 16px #1c191740}