:root{--ink: #1f2937;--paper: #fff8ec;--surface: #ffffff;--muted: #6b7280;--line: #d6dde8;--primary: #2563eb;--primary-soft: #eaf2ff;--success: #14966f;--success-soft: #e8f8f1;--warning: #f2a900;--warning-soft: #fff4c7;--danger: #d92d20;--danger-soft: #ffe7e3;color:var(--ink);background:var(--paper);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}*{box-sizing:border-box}html{min-height:100%;background:var(--paper)}body{min-height:100%;margin:0;background:linear-gradient(180deg,#fff7dd,#f2f8ff 52%,#fffaf0)}button,input,select{color:inherit;font:inherit}button{min-height:40px;border:1px solid var(--line);border-radius:6px;background:var(--surface);cursor:pointer;font-weight:700;transition:background .15s ease,color .15s ease,transform .15s ease}button:active{transform:translateY(1px)}button:disabled{cursor:not-allowed;opacity:.45}button.primary,button.active{border-color:var(--primary);background:var(--primary);color:#fff}input,select{width:100%;min-height:40px;border:1px solid var(--line);border-radius:6px;background:var(--surface);padding:8px 10px}input:focus,select:focus,button:focus-visible{outline:3px solid rgba(37,99,235,.22);outline-offset:2px}input[type=checkbox]{width:22px;height:22px;min-height:22px;margin:0;accent-color:var(--accent, var(--primary))}.app-shell{width:min(100%,1440px);min-height:100vh;margin:0 auto;padding:18px clamp(16px,3vw,36px) 10px}.topbar{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;border-bottom:3px solid var(--ink);padding-bottom:16px}.topbar h1,.page-heading h2,.child-card h3,.panel-heading h3{margin:0;letter-spacing:0}.topbar h1{font-size:clamp(30px,4vw,58px);line-height:.95}.eyebrow{margin:0 0 6px;color:var(--muted);font-size:12px;font-weight:800;letter-spacing:0;text-transform:uppercase}.nav-tabs{display:grid;grid-template-columns:repeat(5,minmax(74px,1fr));gap:6px;width:min(100%,560px)}.nav-tabs button{min-height:44px;padding:0 12px;background:#ffffffdb}.nav-tabs button.active{border-color:var(--primary);background:var(--primary);color:#fff;box-shadow:0 8px 18px #2563eb38}main{padding-top:22px}.promise-screen{display:grid;min-height:100vh;place-items:center;padding:clamp(12px,2vw,24px)}.promise-board{width:min(100%,1180px);border:1px solid var(--line);border-top:14px solid var(--primary);border-radius:8px;background:linear-gradient(180deg,#f2f7ff 0%,var(--surface) 42%,#fffaf0 100%);padding:clamp(14px,2vw,24px);box-shadow:0 16px 36px #1f29371f}.promise-heading,.promise-actions{display:flex;align-items:center;justify-content:space-between;gap:18px}.promise-heading{border-bottom:2px solid var(--ink);padding-bottom:12px}.promise-heading h1{margin:0;font-size:clamp(30px,4vw,54px);line-height:.95}.promise-title-en{display:block;margin-top:8px;font-size:clamp(16px,1.8vw,26px);font-weight:800;color:var(--muted);letter-spacing:.4px}.promise-countdown{display:grid;width:clamp(72px,8vw,96px);height:clamp(72px,8vw,96px);place-items:center;border:3px solid var(--primary);border-radius:50%;background:var(--primary-soft);color:var(--primary);font-size:clamp(32px,4vw,50px);font-weight:950;line-height:1}.promise-countdown.ready{border-color:var(--success);background:var(--success-soft);color:var(--success);font-size:clamp(20px,2.5vw,30px)}.promise-columns{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(12px,2vw,20px);margin:clamp(12px,2vw,20px) 0}.promise-card{min-height:0;border:1px solid var(--line);border-left:10px solid var(--promise-accent, var(--primary));border-radius:8px;background:var(--surface);padding:clamp(14px,2vw,24px)}.promise-card-cn{--promise-accent: #ff6b4a}.promise-card-en{--promise-accent: #38a3ff}.promise-card h2{margin:0 0 12px;font-size:clamp(24px,3vw,40px);line-height:1}.promise-card p{margin:0 0 12px;color:var(--ink);font-size:clamp(16px,1.65vw,22px);font-weight:800;line-height:1.25}.promise-card ul{display:grid;gap:10px;margin:0;padding:0;list-style:none}.promise-card li{display:grid;grid-template-columns:32px minmax(0,1fr);align-items:start;gap:10px;font-size:clamp(16px,1.65vw,22px);line-height:1.2}.promise-card li span{display:grid;width:28px;height:28px;place-items:center;border-radius:50%;background:var(--success-soft);color:var(--success);font-weight:950}.promise-note{margin-top:16px!important;color:var(--promise-accent, var(--primary))!important}.promise-actions{border-top:1px solid var(--line);padding-top:14px}.promise-actions span{color:var(--muted);font-size:clamp(16px,1.8vw,22px);font-weight:900}.promise-actions button{min-width:clamp(180px,22vw,280px);min-height:clamp(48px,5vw,60px);font-size:clamp(19px,2.2vw,28px)}.page{min-height:calc(100vh - 138px)}.page-heading{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:18px}.page-heading h2{font-size:clamp(26px,3.2vw,44px);line-height:1}.return-time{display:grid;justify-items:end;gap:3px;border-left:5px solid var(--warning);padding-left:18px}.return-time span,.timer-topline,.return-status span,.panel-heading span,.locked-timer{color:var(--muted);font-size:13px;font-weight:700}.return-time strong{color:#b45309;font-size:34px;line-height:1}.children-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(14px,2vw,22px)}.child-card{--accent: #ff6b4a;--accent-soft: #fff0eb;display:flex;min-height:0;aspect-ratio:1 / 1;flex-direction:column;border:1px solid var(--line);border-top:14px solid var(--accent);border-radius:8px;background:linear-gradient(180deg,var(--accent-soft) 0%,var(--surface) 34%);padding:clamp(12px,1.4vw,18px);box-shadow:0 10px 24px #1f293714}.children-grid .child-card:nth-child(1){--accent: #ff6b4a;--accent-soft: #fff0eb}.children-grid .child-card:nth-child(2){--accent: #38a3ff;--accent-soft: #ecf7ff}.children-grid .child-card:nth-child(3){--accent: #29b978;--accent-soft: #eafaf2}.children-grid .child-card:nth-child(4){--accent: #8b5cf6;--accent-soft: #f3efff}.child-card-header,.timer-topline,.return-status,.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.child-card h3{font-size:clamp(28px,3.2vw,46px);line-height:1}.count-pill{display:grid;width:clamp(56px,6vw,76px);height:clamp(42px,4.6vw,56px);place-items:center;border:1px solid var(--accent);border-radius:6px;background:var(--surface);color:var(--accent);font-size:clamp(17px,1.7vw,24px);font-weight:900}.count-pill.complete{border-color:var(--success);background:var(--success);color:#fff}.checklist{display:grid;gap:clamp(4px,.7vw,8px);margin:clamp(8px,1vw,14px) 0}.check-row{display:grid;min-height:clamp(38px,4vw,48px);grid-template-columns:clamp(24px,2.7vw,32px) clamp(42px,4.2vw,54px) minmax(0,1fr);align-items:center;gap:clamp(6px,.8vw,10px);border-bottom:1px solid var(--line);padding-bottom:5px;font-size:clamp(14px,1.15vw,17px);font-weight:700}.check-row:has(input:checked){border-bottom-color:var(--accent);color:var(--ink)}.check-text{overflow-wrap:anywhere}.task-visual{--task-main: var(--accent);--task-soft: var(--accent-soft);--task-ink: #243244;display:grid;width:clamp(42px,4.2vw,54px);height:clamp(31px,3.2vw,40px);place-items:center;border:1px solid var(--accent);border-radius:8px;background:#ffffffc2}.task-visual svg{width:92%;height:92%}.task-fill-main{fill:var(--task-main);opacity:.78}.task-fill-soft{fill:var(--task-soft)}.task-line,.task-arrow{fill:none;stroke:var(--task-ink);stroke-linecap:round;stroke-linejoin:round;stroke-width:4}.task-line-check{fill:none;stroke:var(--success);stroke-linecap:round;stroke-linejoin:round;stroke-width:5}.task-dot{fill:var(--warning);stroke:var(--task-ink);stroke-width:4}.task-visual.done{border-color:var(--success);background:var(--success-soft)}.task-visual.done .task-fill-main{fill:var(--success);opacity:.8}.locked-timer,.timer-panel{margin-top:auto}.locked-timer{display:grid;min-height:clamp(58px,7vw,92px);place-items:center;border:1px dashed var(--accent);border-radius:8px;background:#ffffff9e;text-align:center}.timer-panel{border-top:2px solid var(--accent);padding-top:clamp(10px,1.4vw,16px)}.timer-topline label{display:grid;width:112px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:6px}.timer-topline input{min-height:34px;padding:4px 8px}.timer-display,.big-countdown{font-variant-numeric:tabular-nums;letter-spacing:0}.timer-display{margin:10px 0;font-size:clamp(42px,5vw,72px);font-weight:900;line-height:1}.timer-display.expired,.big-countdown.expired{color:#fff;background:var(--danger)}.button-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.button-row.center{display:flex;flex-wrap:wrap;justify-content:center}.button-row.center button{min-width:132px;padding:0 18px}.return-status{min-height:clamp(48px,5vw,64px);margin-top:clamp(6px,.9vw,12px);border-top:1px solid var(--line);padding-top:clamp(6px,.9vw,12px)}.return-status strong{color:var(--ink);display:block;margin-top:4px;font-size:clamp(18px,1.9vw,26px)}.return-status.needs-return{border-color:var(--danger);border-radius:8px;background:var(--danger-soft);padding:10px}.return-status.needs-return strong{color:var(--danger);font-size:28px}.child-card.timer-ready .checklist{gap:2px;margin:6px 0}.child-card.timer-ready .check-row{min-height:30px;grid-template-columns:22px 34px minmax(0,1fr);padding-bottom:2px;font-size:clamp(13px,1vw,15px)}.child-card.timer-ready .task-visual{width:34px;height:25px;border-radius:6px}.child-card.timer-ready .task-line,.child-card.timer-ready .task-arrow{stroke-width:5}.child-card.timer-ready .timer-panel{padding-top:8px}.child-card.timer-ready .timer-display{margin:4px 0;font-size:clamp(38px,4.3vw,60px)}.child-card.timer-ready .button-row button{min-height:34px}.child-card.timer-ready .return-status{min-height:44px;margin-top:5px;padding-top:5px}.child-card.timer-ready .return-status strong{font-size:clamp(16px,1.6vw,22px)}.timer-workbench{display:grid;min-height:62vh;place-items:center;align-content:center;gap:22px;border:1px solid #b9d2ff;border-radius:8px;background:linear-gradient(180deg,var(--primary-soft),var(--surface));padding:clamp(18px,4vw,46px)}.segmented-control{display:grid;width:min(100%,540px);grid-template-columns:repeat(3,1fr);gap:8px}.big-countdown{width:min(100%,760px);border:3px solid var(--primary);border-radius:8px;background:var(--surface);color:var(--primary);padding:24px 28px;text-align:center;font-size:clamp(76px,14vw,178px);font-weight:950;line-height:.95}.return-message{border:2px solid var(--danger);border-radius:8px;background:var(--danger-soft);color:var(--danger);padding:12px 18px;font-size:clamp(22px,3vw,36px);font-weight:900;text-align:center}.rules-list{display:grid;gap:12px;margin:0;padding:0;list-style:none}.rules-list li{display:grid;min-height:116px;grid-template-columns:90px minmax(0,1fr);align-items:center;border:1px solid var(--line);border-left:10px solid var(--rule, var(--primary));border-radius:8px;background:var(--surface);gap:18px;padding:0 18px 0 0}.rules-list li:nth-child(1){--rule: #ff6b4a}.rules-list li:nth-child(2){--rule: var(--danger)}.rules-list li:nth-child(3){--rule: #8b5cf6}.rules-list span{color:var(--rule, var(--muted));font-size:20px;font-weight:900}.rules-list strong{font-size:clamp(30px,5vw,68px);line-height:1}.summary-table{display:grid;border:1px solid var(--line);border-radius:8px;background:var(--surface);overflow-x:auto}.summary-row{display:grid;min-width:860px;grid-template-columns:180px repeat(7,minmax(72px,1fr)) 120px;border-bottom:1px solid var(--line)}.summary-row:last-child{border-bottom:0}.summary-row>div{display:grid;min-height:66px;place-items:center;border-right:1px solid var(--line);padding:10px;font-weight:800;text-align:center}.summary-row>div:last-child{border-right:0}.summary-header{background:var(--primary);color:#fff}.child-name-cell{justify-items:start;text-align:left}.day-dot{display:block;width:28px;height:28px;border:2px solid var(--success);border-radius:50%}.day-dot.complete{background:var(--success)}.days-count{font-size:22px}.settings-grid{display:grid;grid-template-columns:minmax(260px,.8fr) minmax(420px,1.4fr);gap:12px}.settings-panel{border:1px solid var(--line);border-top:6px solid var(--settings-accent, var(--primary));border-radius:8px;background:var(--surface);padding:14px}.settings-panel:nth-child(1){--settings-accent: #38a3ff}.settings-panel:nth-child(2){--settings-accent: #29b978}.settings-panel:nth-child(3){--settings-accent: #f2a900}.settings-panel:nth-child(4){--settings-accent: #8b5cf6}.settings-panel.wide{grid-row:span 3}.panel-heading{border-bottom:1px solid var(--line);padding-bottom:10px}.panel-heading h3{font-size:24px}.field-stack{display:grid;gap:10px;margin-top:14px}.field{display:grid;gap:6px}.field span{color:var(--muted);font-size:12px;font-weight:800}.field.compact{grid-template-columns:28px minmax(0,1fr);align-items:center}.field.compact span{color:var(--ink);font-size:14px;text-align:center}.checklist-editor{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:14px}.checklist-edit-group{display:grid;gap:8px;border:1px solid var(--line);border-radius:8px;background:#fbfdff;padding:10px}.export-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:14px}@media(max-width:900px){.promise-columns{grid-template-columns:1fr}.promise-card{min-height:auto}.settings-grid{grid-template-columns:1fr}.settings-panel.wide{grid-row:auto}}@media(max-width:720px){.app-shell{padding-inline:12px}.topbar,.promise-heading,.promise-actions{align-items:stretch;flex-direction:column}.promise-countdown{width:88px;height:88px}.nav-tabs{width:100%;grid-template-columns:repeat(5,minmax(0,1fr))}.nav-tabs button{min-width:0;padding:0 4px;font-size:12px}.page-heading{align-items:flex-start;flex-direction:column}.return-time{width:100%;justify-items:start;border-left:0;border-top:2px solid var(--warning);padding:10px 0 0}.children-grid,.checklist-editor{grid-template-columns:1fr}.child-card{aspect-ratio:auto;min-height:auto}.rules-list li{min-height:98px;grid-template-columns:58px minmax(0,1fr)}.big-countdown{padding:16px 10px}}