:root{--bg: #f3f6fb;--card: #ffffff;--text: #1f2937;--muted: #6b7280;--primary: #2563eb;--primary-hover: #1d4ed8;--secondary: #e5e7eb;--secondary-hover: #d1d5db;--border: #dbe3f0;--error: #dc2626;--success: #059669;--result-bg: #eff6ff;--shadow: 0 12px 30px rgba(37, 99, 235, .12);--surface: var(--card);--surface-subtle: #f8fafc;--focus-ring: #0f766e;--warning: #b45309;--warning-bg: #fffbeb;--error-bg: #fef2f2;--success-bg: #ecfdf5;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--radius-control: 8px;--radius-panel: 8px;--focus-shadow: 0 0 0 3px color-mix(in srgb, var(--focus-ring) 24%, transparent)}.skip-link{position:fixed;top:8px;left:8px;z-index:200;padding:10px 14px;border-radius:8px;color:#fff;background:#111827;transition:opacity .16s ease}.skip-link:not(:focus){width:1px;height:1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.sw-update-banner{position:fixed;right:16px;bottom:max(16px,env(safe-area-inset-bottom));z-index:150;display:flex;align-items:center;gap:12px;max-width:min(440px,calc(100vw - 32px));padding:10px 12px;border:1px solid var(--border);border-radius:8px;color:var(--text);background:var(--card);box-shadow:var(--shadow)}.sw-update-banner[hidden]{display:none}.sw-update-banner span{line-height:1.4}.network-status{position:fixed;top:8px;left:50%;z-index:140;width:min(520px,calc(100vw - 32px));padding:9px 12px;border:1px solid var(--warning);border-radius:8px;color:#78350f;background:var(--warning-bg);text-align:center;font-size:.88rem;font-weight:700;transform:translate(-50%);box-shadow:var(--shadow)}.network-status[hidden]{display:none}button,input,select,summary,a{touch-action:manipulation}*{box-sizing:border-box}body{margin:0;min-height:100vh;font-family:Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;color:var(--text);background:radial-gradient(circle at top left,#dbeafe 0,transparent 35%),radial-gradient(circle at bottom right,#e0e7ff 0,transparent 30%),var(--bg)}.app{min-height:100vh;display:flex;align-items:flex-start;justify-content:center;padding:24px}.card{width:100%;max-width:640px;background:var(--card);border:1px solid var(--border);border-radius:20px;box-shadow:var(--shadow);padding:28px 24px}h1{margin:0 0 8px;font-size:1.75rem;text-align:center}h2{margin:0;font-size:1.05rem}.subtitle{margin:0 0 24px;color:var(--muted);text-align:center;font-size:.95rem}.settings{margin-bottom:8px}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}.field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px;font-weight:600}.field input,.field select{width:100%;height:44px;border:1px solid var(--border);border-radius:12px;padding:0 14px;font-size:1rem;outline:none;background:#fff;transition:border-color .2s ease,box-shadow .2s ease}.field input:focus,.field select:focus{border-color:var(--primary);box-shadow:0 0 0 3px #2563eb26}.field input:disabled{background:#f9fafb;color:var(--muted)}.timer-text{height:44px;display:flex;align-items:center;padding:0 14px;border:1px solid var(--border);border-radius:12px;background:#f8fafc;color:var(--muted);font-weight:700}.timer-text.warning{color:#b45309;background:#fffbeb;border-color:#fcd34d}.timer-text.danger{color:var(--error);background:#fef2f2;border-color:#fecaca}.chip-group{display:flex;flex-wrap:wrap;gap:10px}.chip{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border:1px solid var(--border);border-radius:999px;background:#f8fafc;cursor:pointer;font-weight:600;user-select:none}.chip input{width:16px;height:16px;margin:0}.chip:has(input:checked){border-color:#93c5fd;background:#eff6ff;color:#1d4ed8}.options-row{display:flex;flex-wrap:wrap;gap:16px 24px;margin-bottom:16px}.check-row{display:flex;align-items:center;gap:10px;font-weight:600;cursor:pointer}.check-row input{width:16px;height:16px}.actions{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:8px 0 18px}.btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;height:44px;border:none;border-radius:var(--radius-control);font-size:.98rem;font-weight:600;cursor:pointer;transition:background-color .2s ease,transform .1s ease,opacity .2s ease}.btn.tiny{height:34px;padding:0 12px;font-size:.88rem;border-radius:10px}.btn:active{transform:translateY(1px)}.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}.btn.primary{color:#fff;background:var(--primary)}.btn.primary:hover:not(:disabled){background:var(--primary-hover)}.btn.secondary{color:var(--text);background:var(--secondary)}.btn.secondary:hover:not(:disabled){background:var(--secondary-hover)}.status-bar{display:flex;justify-content:space-between;gap:12px;margin-bottom:12px;color:var(--muted);font-size:.92rem;font-weight:600}.question-box{min-height:88px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;padding:18px 16px;border-radius:16px;background:linear-gradient(180deg,#f8fbff,#eef5ff);border:1px solid #dbeafe;text-align:center;font-size:1.6rem;font-weight:700;letter-spacing:0;transition:background .2s ease,border-color .2s ease,color .2s ease}.practice-qtag{display:inline-flex;align-items:center;gap:6px;margin:0 auto 10px;padding:6px 12px;border-radius:999px;font-size:.82rem;font-weight:700;letter-spacing:0;background:#eff6ff;color:#1d4ed8;border:1px solid #bfdbfe}.practice-qtag.review{background:#fffbeb;color:#92400e;border-color:#fcd34d}.practice-qtag.special{background:linear-gradient(135deg,#ede9fe,#eff6ff);color:#6d28d9;border-color:#c4b5fd}.practice-qtag:empty{display:none}.question-box.correct{background:linear-gradient(180deg,#ecfdf5,#d1fae5);border-color:#a7f3d0;color:#047857}.question-box.wrong{background:linear-gradient(180deg,#fef2f2,#fee2e2);border-color:#fecaca;color:#b91c1c}.question-result{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:-8px 0 16px}.question-result:empty{display:none}.result-card{padding:12px 14px;border-radius:12px;border:1px solid var(--border);background:#f8fafc}.result-card .result-label{font-size:.78rem;font-weight:700;color:var(--muted);margin-bottom:4px;letter-spacing:0}.result-card .result-value{font-size:1.25rem;font-weight:800;line-height:1.2}.result-card.user{border-color:#fde68a;background:#fffbeb}.result-card.user .result-value{color:#92400e}.result-card.correct{border-color:#a7f3d0;background:#ecfdf5}.result-card.correct .result-value{color:#047857}.wrong-explanation{grid-column:1 / -1;padding:14px 16px;border:1px solid #bfdbfe;border-radius:8px;background:#eff6ff;color:#1e3a8a;text-align:left}.wrong-explanation ol{margin:8px 0 0;padding-left:1.25rem}.wrong-explanation li+li{margin-top:5px}.result{min-height:56px;display:flex;align-items:center;justify-content:center;margin-bottom:18px;padding:14px 16px;border-radius:14px;background:var(--result-bg);border:1px solid #bfdbfe;text-align:center;font-size:1.05rem;font-weight:600;word-break:break-word}.result.error{color:var(--error);background:#fef2f2;border-color:#fecaca}.result.success{color:var(--success);background:#ecfdf5;border-color:#a7f3d0}.panel{margin-top:8px;padding-top:16px;border-top:1px solid var(--border)}.panel-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}.list{list-style:none;margin:0;padding:0;display:grid;gap:8px}.list li{padding:12px 14px;border:1px solid var(--border);border-radius:12px;background:#f8fafc;font-size:.95rem;line-height:1.5}.list .empty{color:var(--muted);text-align:center}.muted{color:var(--muted)}@media(max-width:768px){.app{padding:20px 16px}.card{max-width:560px;padding:24px 20px}.actions{grid-template-columns:repeat(2,1fr)}.question-box{font-size:1.4rem;min-height:80px}.question-result{grid-template-columns:1fr 1fr}}@media(max-width:480px){.card{padding:22px 18px}.grid-2{grid-template-columns:1fr;gap:0}.actions{grid-template-columns:1fr 1fr}.status-bar,.panel-header{flex-direction:column;align-items:flex-start;gap:8px}.question-box{font-size:1.28rem}.question-result{grid-template-columns:1fr;gap:8px}.result-card .result-value{font-size:1.1rem}.field input,.field select,.btn:not(.tiny),.timer-text{height:42px}}@media(max-width:360px){.actions{grid-template-columns:1fr}.chip-group{gap:8px}.question-box{font-size:1.15rem;min-height:72px}.result-card{padding:10px 12px}.result-card .result-value{font-size:1.05rem}}.mode-text{margin-bottom:4px;color:var(--primary);font-size:.9rem}.mode-text.review{color:#b45309}.panel-actions{display:flex;flex-wrap:wrap;gap:8px}.wrong-item{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}.item-actions{display:flex;flex-direction:column;gap:8px;flex-shrink:0}@media(max-width:480px){.wrong-item{flex-direction:column}.item-actions{width:100%;flex-direction:row}.item-actions .btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;flex:1}}.actions.five{grid-template-columns:repeat(5,1fr)}.status-right{text-align:right}.streak-text{margin-bottom:4px;color:#b45309;font-size:.9rem}.reward-banner{margin-bottom:12px;padding:12px 14px;border-radius:12px;border:1px solid #fcd34d;background:#fffbeb;color:#92400e;text-align:center;font-weight:700}.reward-banner.good{border-color:#86efac;background:#ecfdf5;color:#047857}.reward-banner.great{border-color:#93c5fd;background:#eff6ff;color:#1d4ed8}.reward-banner.epic{border-color:#f0abfc;background:#fdf4ff;color:#a21caf}@media(max-width:768px){.actions.five{grid-template-columns:repeat(2,1fr)}}@media(max-width:480px){.status-right{text-align:left}.actions.five{grid-template-columns:1fr 1fr}}@media(max-width:360px){.actions.five{grid-template-columns:1fr}}.options-inline .options-row.compact{margin:0;min-height:44px;align-items:center}.practice-panel{margin-bottom:8px}.batch-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.batch-hint{color:var(--muted);font-size:.92rem;font-weight:600}.batch-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-bottom:16px}.batch-item{display:grid;grid-template-columns:minmax(0,1fr) 120px;gap:10px;align-items:center;padding:18px;border:1px solid var(--border);border-radius:12px;background:#f8fafc}.batch-item.correct{background:#ecfdf5;border-color:#a7f3d0}.batch-item.wrong{background:#fef2f2;border-color:#fecaca}.batch-label{font-weight:700;font-size:1.35rem}.batch-input{width:100%;height:52px;border:1px solid var(--border);border-radius:10px;padding:0 12px;font-size:1.25rem;font-weight:700;outline:none;background:#fff}.batch-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #2563eb26}.batch-result{grid-column:1 / -1;font-size:.92rem;font-weight:700;color:var(--muted)}.batch-item.unanswered{border-color:var(--error);box-shadow:0 0 0 4px #dc262621;animation:unanswered-pulse .35s ease-out}@keyframes unanswered-pulse{0%{transform:scale(.98)}}.batch-item.correct .batch-result{color:var(--success)}.batch-item.wrong .batch-result{color:var(--error)}@media(max-width:768px){.batch-list{grid-template-columns:1fr}.batch-item{grid-template-columns:minmax(0,1fr) 110px}.batch-toolbar{flex-direction:column;align-items:stretch}}.top-bar{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;margin-bottom:8px}.top-actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px;max-width:360px}.btn.active-toggle{background:#dbeafe;color:#1d4ed8}.stats-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.stat-card{padding:12px;border:1px solid var(--border);border-radius:12px;background:#f8fafc}.stat-label{color:var(--muted);font-size:.85rem;margin-bottom:6px}.stat-value{font-size:1.05rem;font-weight:700}html[data-theme=dark]{--bg: #0b1220;--card: #111827;--text: #e5e7eb;--muted: #9ca3af;--primary: #3b82f6;--primary-hover: #2563eb;--secondary: #1f2937;--secondary-hover: #374151;--border: #334155;--error: #f87171;--success: #34d399;--result-bg: #0f172a;--shadow: 0 12px 30px rgba(0, 0, 0, .35)}html[data-theme=dark] body{background:radial-gradient(circle at top left,rgba(37,99,235,.18) 0,transparent 35%),radial-gradient(circle at bottom right,rgba(147,51,234,.12) 0,transparent 30%),var(--bg)}html[data-theme=dark] .field input,html[data-theme=dark] .field select,html[data-theme=dark] .timer-text,html[data-theme=dark] .batch-input,html[data-theme=dark] .stat-card,html[data-theme=dark] .list li,html[data-theme=dark] .batch-item,html[data-theme=dark] .chip{background:#0f172a;color:var(--text)}html[data-theme=dark] .question-box{background:linear-gradient(180deg,#0f172a,#111827);border-color:#1e3a8a}html[data-theme=dark] .practice-qtag{background:#1e3a8a;color:#bfdbfe;border-color:#1d4ed8}html[data-theme=dark] .practice-qtag.review{background:#78350f;color:#fcd34d;border-color:#92400e}html[data-theme=dark] .practice-qtag.special{background:linear-gradient(135deg,#4c1d95,#1e3a8a);color:#ddd6fe;border-color:#6d28d9}html[data-theme=dark] .question-box.correct{background:linear-gradient(180deg,#064e3b,#065f46);border-color:#10b981;color:#6ee7b7}html[data-theme=dark] .question-box.wrong{background:linear-gradient(180deg,#7f1d1d,#991b1b);border-color:#ef4444;color:#fca5a5}html[data-theme=dark] .result-card{background:#0f172a;color:var(--text)}html[data-theme=dark] .result-card.user{border-color:#92400e;background:#451a03}html[data-theme=dark] .result-card.user .result-value{color:#fcd34d}html[data-theme=dark] .result-card.correct{border-color:#065f46;background:#022c22}html[data-theme=dark] .result-card.correct .result-value{color:#6ee7b7}html[data-theme=dark] .wrong-explanation{border-color:#1d4ed8;background:#172554;color:#bfdbfe}html[data-theme=dark] .btn.active-toggle{background:#1e3a8a;color:#bfdbfe}@media(max-width:768px){.top-bar{flex-direction:column}.stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:480px){.stats-grid{grid-template-columns:1fr}}.actions.main-actions{grid-template-columns:repeat(4,1fr)}.resume-banner{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:-4px 0 16px;padding:12px 14px;border:1px solid #93c5fd;border-radius:12px;background:#eff6ff;color:#1d4ed8}.resume-banner[hidden]{display:none}.resume-banner span{margin-left:4px;color:var(--muted)}.daily-text{margin-top:4px;color:#047857;font-size:.9rem;font-weight:700}.daily-progress-wrap{height:10px;margin:0 0 14px;border-radius:999px;background:#e5e7eb;overflow:hidden}.daily-bar{height:100%;width:0;border-radius:999px;background:linear-gradient(90deg,#34d399,#2563eb);transition:width .25s ease}.daily-bar.complete{background:linear-gradient(90deg,#f59e0b,#10b981)}.hint-box{margin-bottom:12px;padding:12px 14px;border-radius:12px;border:1px dashed #93c5fd;background:#eff6ff;color:#1d4ed8;font-weight:600}html[data-theme=dark] .daily-progress-wrap{background:#1f2937}html[data-theme=dark] .daily-text{color:#34d399}html[data-theme=dark] .hint-box,html[data-theme=dark] .resume-banner{background:#0f172a;border-color:#1d4ed8;color:#93c5fd}@media(max-width:768px){.actions.main-actions{grid-template-columns:repeat(3,1fr)}.resume-banner{align-items:stretch;flex-direction:column}}@media(max-width:480px){.actions.main-actions{grid-template-columns:repeat(2,1fr)}}@media(max-width:360px){.actions.main-actions{grid-template-columns:1fr}}[hidden]{display:none!important}body{background:var(--bg)}.app{display:block;width:min(1120px,100%);min-height:100vh;margin:0 auto;padding:20px 28px 56px}.app-header{position:sticky;top:0;z-index:20;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px;min-height:72px;margin-bottom:28px;padding:10px 0;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(14px)}.brand{display:inline-flex;align-items:center;gap:11px;width:fit-content;color:var(--text);text-decoration:none}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:14px;color:#fff;background:linear-gradient(135deg,#2563eb,#7c3aed);box-shadow:0 8px 20px #2563eb3d;font-size:1.1rem;font-weight:800}.brand strong,.brand small{display:block}.brand strong{font-size:1rem}.brand small{margin-top:2px;color:color-mix(in srgb,var(--muted) 65%,var(--text));font-size:.74rem}.page-nav{display:flex;gap:4px;padding:4px;border:1px solid var(--border);border-radius:13px;background:var(--card)}.nav-button,.icon-button{border:0;color:var(--muted);background:transparent;cursor:pointer;font:inherit;font-weight:700}.nav-button{padding:9px 18px;border-radius:9px}.nav-button.active{color:var(--primary);background:var(--result-bg)}.header-actions{display:flex;justify-content:flex-end;gap:8px}.icon-button{min-height:36px;padding:7px 11px;border:1px solid var(--border);border-radius:10px;background:var(--card)}.app-header .header-tools{display:inline-flex;align-items:center;gap:2px;padding:3px;border:1px solid var(--border);border-radius:12px;background:var(--card);box-shadow:0 4px 14px color-mix(in srgb,var(--text) 7%,transparent)}.header-tool{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:7px;min-width:40px;height:38px;padding:0 10px;border:0;border-radius:8px;color:var(--muted);background:transparent;cursor:pointer;font:inherit;font-size:.82rem;font-weight:700;white-space:nowrap;transition:color .16s ease,background-color .16s ease}.header-tool:hover{color:var(--text);background:color-mix(in srgb,var(--text) 6%,transparent)}.header-tool:active{background:color-mix(in srgb,var(--text) 10%,transparent)}.header-tool>svg{width:17px;height:17px;flex:0 0 17px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.header-tool-bind{color:var(--primary);background:color-mix(in srgb,var(--primary) 9%,transparent)}.header-tool-bind:hover{color:var(--primary-hover);background:color-mix(in srgb,var(--primary) 14%,transparent)}.header-tool.active{color:var(--primary);background:color-mix(in srgb,var(--primary) 12%,transparent)}.page-view{animation:page-in .18s ease-out}@keyframes page-in{0%{opacity:0;transform:translateY(5px)}}.practice-view{max-width:820px;margin:0 auto}.child-tasks{margin-bottom:18px;padding:16px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.child-tasks-head,.child-task-item{display:flex;align-items:center;justify-content:space-between;gap:16px}.child-tasks-head h2{margin:3px 0 0;font-size:1.15rem}.child-task-list{display:grid;margin-top:10px}.child-task-item{min-height:62px;padding:10px 0;border-top:1px solid var(--border)}.child-task-item:first-child{border-top:0}.practice-card,.config-card{border:1px solid var(--border);border-radius:24px;background:var(--card);box-shadow:var(--shadow)}.practice-card{padding:34px}.practice-heading,.config-heading,.section-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:24px}.practice-heading{margin-bottom:24px}.practice-heading h1,.config-heading h1{margin:4px 0 8px;text-align:left;font-size:2rem}.practice-heading .subtitle,.config-heading .subtitle{margin:0;text-align:left}.eyebrow{color:var(--primary);font-size:.76rem;font-weight:800;letter-spacing:0;text-transform:uppercase}.practice-card .status-bar{margin:0 0 10px}.practice-card .question-box{min-height:210px;margin:20px 0 18px;border:0;border-radius:22px;background:linear-gradient(145deg,var(--result-bg),color-mix(in srgb,var(--result-bg) 45%,var(--card)));font-size:4rem}.answer-field{display:block;max-width:420px;margin:0 auto}.answer-field>span{display:block;margin-bottom:8px;color:var(--muted);font-size:.86rem;font-weight:700;text-align:center}.answer-field input{width:100%;padding:15px 18px;border:2px solid var(--border);border-radius:14px;color:var(--text);background:var(--card);font:inherit;font-size:1.35rem;font-weight:700;text-align:center;outline:none}.answer-field input:focus{border-color:var(--primary);box-shadow:0 0 0 4px #2563eb1f}.practice-actions{grid-template-columns:repeat(5,auto);justify-content:center}.btn.ghost{color:var(--muted);border-color:transparent;background:transparent}.btn.large{min-height:48px;padding-inline:24px;font-size:1rem}.config-view{max-width:920px;margin:0 auto}.config-heading{margin:8px 0 22px}.config-card{padding:28px}.config-card .settings{margin:0}.preset-panel{margin-bottom:24px;padding-bottom:22px;border-bottom:1px solid var(--border)}.preset-buttons,.custom-preset-row{display:flex;flex-wrap:wrap;gap:10px}.custom-preset-row{margin-top:12px}.custom-preset-row select,.custom-preset-row input{min-height:38px;padding:7px 10px;border:1px solid var(--border);border-radius:9px;color:var(--text);background:var(--card);font:inherit}.custom-preset-row select{min-width:180px}.answer-limit{display:grid;gap:10px}.config-tip p{margin:0;min-height:42px;padding:11px 12px;color:var(--muted);border:1px dashed var(--border);border-radius:10px;font-size:.88rem}.config-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:22px;padding-top:22px;border-top:1px solid var(--border)}.advanced-config{margin-top:8px;padding:14px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.advanced-config>summary{width:fit-content;cursor:pointer;color:var(--primary);font-weight:800}.advanced-config-body{margin-top:18px}.records-section{margin-top:44px}.section-heading{align-items:center;margin-bottom:16px}.section-heading h2{margin-top:5px;font-size:1.35rem}.data-actions{display:flex;gap:8px}.records-section .panel{background:var(--card)}html[data-theme=dark] .app-header{background:color-mix(in srgb,var(--bg) 88%,transparent)}html[data-theme=dark] .answer-field input,html[data-theme=dark] .page-nav,html[data-theme=dark] .icon-button{color:var(--text);background:var(--card)}html[data-theme=dark] .practice-card .question-box{background:linear-gradient(145deg,#0f172a,#172554)}@media(max-width:820px){.app{padding:12px 16px 40px}.app-header{grid-template-columns:1fr auto;gap:12px;margin-bottom:18px}.page-nav{position:fixed;right:16px;bottom:16px;left:16px;z-index:30;justify-content:stretch;box-shadow:var(--shadow)}.nav-button{flex:1}.header-actions{grid-column:2;grid-row:1}.practice-card{padding:24px 20px}.practice-actions{grid-template-columns:repeat(3,1fr)}.records-section{margin-bottom:72px}}@media(max-width:560px){.brand small{display:none}.icon-button{padding-inline:9px;font-size:.78rem}.practice-heading,.section-heading{align-items:stretch;flex-direction:column;gap:14px}.practice-heading .btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;width:100%}.practice-card{padding:20px 16px;border-radius:20px}.practice-card .status-bar{align-items:flex-start;flex-direction:column}.status-right{width:100%;align-items:flex-start;text-align:left}.practice-card .question-box{min-height:170px;font-size:2.6rem;overflow-wrap:anywhere}.practice-heading h1,.config-heading h1{font-size:1.65rem}.practice-actions{grid-template-columns:repeat(2,1fr)}.child-task-item{align-items:stretch;flex-direction:column}.child-task-item .btn{width:100%}.config-card{padding:20px 16px}.config-actions{align-items:stretch;flex-direction:column}.config-actions .btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;width:100%}.data-actions{width:100%}.data-actions .btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;flex:1}}.app-header{grid-template-columns:1fr auto}.practice-empty{display:flex;min-height:min(620px,calc(100vh - 140px));align-items:center;justify-content:center;flex-direction:column;padding:48px 20px;text-align:center}.empty-mark{display:grid;place-items:center;width:88px;height:88px;margin-bottom:24px;border-radius:28px;color:#fff;background:linear-gradient(135deg,#2563eb,#7c3aed);box-shadow:0 18px 40px #2563eb38;font-size:1.35rem;font-weight:900;letter-spacing:0;transform:rotate(-4deg)}.practice-empty h1{margin:0 0 10px;font-size:2.2rem}.practice-empty p{margin:0 0 28px;color:color-mix(in srgb,var(--muted) 65%,var(--text))}.home-daily-progress{width:min(360px,100%);margin:-8px 0 26px}.home-daily-progress .daily-text{margin:0 0 8px;color:var(--muted);font-size:.9rem}.home-daily-progress .daily-progress-wrap{margin:0}.focused-status{min-height:44px;align-items:center;color:var(--text);font-size:1rem}.focused-status #progressText{font-weight:800}.focused-status .timer-text{height:36px;padding-inline:12px}.finish-panel{min-height:520px;display:flex;align-items:center;justify-content:center;flex-direction:column;padding:32px 12px;text-align:center}.finish-mark{display:grid;place-items:center;width:58px;height:58px;margin-bottom:16px;border-radius:50%;color:#fff;background:var(--success);font-size:1.7rem;font-weight:900}.finish-theme-reward{width:min(420px,100%);margin:-6px 0 18px}.finish-theme-tokens{display:flex;align-items:center;justify-content:center;gap:10px;min-height:44px}.finish-theme-tokens span{display:grid;place-items:center;width:38px;height:38px;border:1px solid var(--border);border-radius:50%;color:var(--muted);background:var(--card);opacity:.32;font-size:1.05rem;font-weight:900;transform:scale(.9)}.finish-theme-tokens span:before{content:"\2713"}.finish-theme-tokens span.earned{color:#fff;background:var(--primary);border-color:var(--primary);opacity:1;transform:scale(1)}.finish-theme-reward p{margin:7px 0 0;color:var(--primary);font-weight:800}.finish-theme-reward.reward-enter .earned{animation:finish-token-in .48s ease-out both}.finish-theme-reward.reward-enter .earned:nth-child(2){animation-delay:60ms}.finish-theme-reward.reward-enter .earned:nth-child(3){animation-delay:.12s}.finish-theme-reward.reward-enter .earned:nth-child(4){animation-delay:.18s}.finish-theme-reward.reward-enter .earned:nth-child(5){animation-delay:.24s}@keyframes finish-token-in{0%{opacity:0;transform:translateY(8px) scale(.7)}}.finish-theme-reward.theme-forest .finish-theme-tokens span{border-radius:50% 8px;transform:rotate(-12deg) scale(.9)}.finish-theme-reward.theme-forest .finish-theme-tokens span:before{content:"\53f6";transform:rotate(12deg)}.finish-theme-reward.theme-forest .finish-theme-tokens span.earned{background:#12805c;border-color:#12805c;transform:rotate(-12deg) scale(1)}.finish-theme-reward.theme-space .finish-theme-tokens span{color:#64748b;background:#111827;border-color:#334155}.finish-theme-reward.theme-space .finish-theme-tokens span:before{content:"\2605"}.finish-theme-reward.theme-space .finish-theme-tokens span.earned{color:#0b1220;background:#facc15;border-color:#fde047;box-shadow:0 0 18px #facc154d}.finish-theme-reward.theme-space p{color:#7dd3fc}html[data-appearance=space] .finish-mark{color:#0b1220;background:#facc15;box-shadow:0 0 22px #facc1547}html[data-appearance=forest] .finish-mark{background:#12805c}html[data-appearance=paper] .finish-mark{background:#d95d39}.finish-theme-reward.theme-paper .finish-theme-tokens span{border-radius:7px;transform:rotate(-3deg) scale(.9)}.finish-theme-reward.theme-paper .finish-theme-tokens span:before{content:"\4f18"}.finish-theme-reward.theme-paper .finish-theme-tokens span.earned{color:#fff;background:#d95d39;border-color:#b9482b;transform:rotate(-3deg) scale(1)}.finish-theme-reward.theme-paper p{color:#315b8a}.finish-theme-reward.level-steady .finish-theme-tokens span.earned{filter:saturate(.72)}.finish-panel h1{margin:8px 0;font-size:2rem}.finish-message{margin:0 0 10px;color:var(--muted)}.finish-suggestion{width:min(520px,100%);margin:0 0 24px;padding:10px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);color:var(--text);font-weight:700;line-height:1.6}.finish-insights{width:min(520px,100%);margin:-10px 0 20px;text-align:left}.finish-insights>strong{display:block;margin-bottom:8px}.finish-insights>div{display:flex;flex-wrap:wrap;gap:7px}.finish-insights span{display:inline-flex;min-height:30px;align-items:center;padding:4px 9px;border:1px solid var(--border);border-radius:7px;color:var(--muted);background:var(--result-bg);font-size:.82rem}.finish-wrong-guide{width:min(520px,100%);margin:0 0 18px;padding:12px 0 12px 16px;border-left:3px solid var(--primary);text-align:left}.finish-wrong-guide ol{margin:8px 0 0;padding-left:1.25rem;color:var(--muted)}.finish-wrong-guide li+li{margin-top:4px}.finish-metrics{display:grid;grid-template-columns:repeat(3,minmax(110px,1fr));width:min(520px,100%);margin-bottom:18px;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.finish-metrics>div{padding:18px 14px;border-right:1px solid var(--border)}.finish-metrics>div:last-child{border-right:0}.finish-metrics span,.finish-metrics strong{display:block}.finish-metrics span{color:var(--muted);font-size:.82rem}.finish-metrics strong{margin-top:5px;font-size:1.35rem}.finish-sync{min-height:24px;margin:6px 0 18px;color:var(--success);font-weight:700}.finish-sync.error{color:var(--error)}.finish-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:10px}.finish-actions .btn{min-width:130px;padding-inline:18px}@media(max-width:560px){.finish-panel{min-height:460px;padding-inline:0}.finish-metrics{grid-template-columns:1fr}.finish-metrics>div{padding:12px;border-right:0;border-bottom:1px solid var(--border)}.finish-metrics>div:last-child{border-bottom:0}.finish-actions,.finish-actions .btn{width:100%}.finish-theme-tokens{gap:7px}.finish-theme-tokens span{width:34px;height:34px}}.practice-empty .btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;min-width:180px;min-height:54px;border-radius:16px;font-size:1.06rem;box-shadow:0 12px 26px #2563eb33}.gate-backdrop{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:20px;background:#0f172a94;backdrop-filter:blur(5px)}.gate-dialog{width:min(400px,100%);padding:30px;border:1px solid var(--border);border-radius:22px;background:var(--card);box-shadow:0 28px 70px #0f172a47;text-align:center;animation:gate-in .18s ease-out}@keyframes gate-in{0%{transform:translateY(8px) scale(.98)}}.gate-lock{display:grid;place-items:center;width:52px;height:52px;margin:0 auto 14px;border-radius:16px;background:var(--result-bg);font-size:1.4rem}.gate-dialog h2{margin:0 0 8px;font-size:1.35rem}.gate-dialog>p{margin:0 0 20px;color:var(--muted);line-height:1.6}.gate-field{display:block}.gate-field span{display:block;margin-bottom:12px;font-size:1.65rem;font-weight:800}.gate-field input{width:100%;padding:13px 16px;border:2px solid var(--border);border-radius:12px;color:var(--text);background:var(--card);font:inherit;font-size:1.25rem;font-weight:800;text-align:center;outline:none}.gate-field input:focus{border-color:var(--primary);box-shadow:0 0 0 4px #2563eb1f}.gate-feedback{min-height:22px;margin:8px 0 10px;color:var(--error);font-size:.88rem;font-weight:700}.gate-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}.gate-login-fields{display:grid;grid-template-columns:1fr;gap:12px;text-align:left}.gate-login-fields .gate-field span{margin-bottom:6px;color:var(--muted);font-size:.82rem;font-weight:700}.gate-login-fields .gate-field input{padding:11px 12px;font-size:1rem;font-weight:600;text-align:left}.gate-primary-action{width:100%}.site-auth-dialog{width:min(440px,100%);max-height:calc(100dvh - 32px);overflow-y:auto;overscroll-behavior:contain}.auth-mode-switch{display:grid;grid-template-columns:1fr 1fr;margin:0 0 18px;padding:3px;border:1px solid var(--border);border-radius:var(--radius-control);background:var(--surface-subtle)}.auth-mode-switch button{min-height:38px;border:0;border-radius:6px;color:var(--muted);background:transparent;font:inherit;font-weight:700;cursor:pointer}.auth-mode-switch button[aria-selected=true]{color:var(--text);background:var(--card);box-shadow:0 1px 4px color-mix(in srgb,var(--text) 12%,transparent)}.site-auth-panel[hidden]{display:none}.site-auth-panel .gate-primary-action{margin-top:2px}html[data-theme=dark] .gate-dialog,html[data-theme=dark] .gate-field input{color:var(--text);background:var(--card)}.appearance-dialog{width:min(680px,calc(100vw - 32px));max-width:680px;text-align:left}.appearance-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:22px}.appearance-head h2{margin-top:5px;font-size:1.35rem}.appearance-close{width:44px;height:44px;flex:0 0 44px;border:1px solid var(--border);border-radius:50%;color:var(--muted);background:var(--card);cursor:pointer;font-size:1.65rem;line-height:1}.appearance-group{margin:0 0 22px;padding:0;border:0}.appearance-group legend{margin-bottom:10px;font-weight:800}.appearance-options{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.question-style-options{grid-template-columns:repeat(3,minmax(0,1fr))}.appearance-option{position:relative;min-width:0;padding:9px;border:2px solid var(--border);border-radius:8px;background:var(--card);cursor:pointer}.appearance-option:has(input:checked){border-color:var(--primary);box-shadow:0 0 0 2px color-mix(in srgb,var(--primary) 18%,transparent)}.appearance-option input{position:absolute;top:12px;right:12px;width:18px;height:18px;accent-color:var(--primary)}.appearance-option strong,.appearance-option small{display:block}.appearance-option strong{margin-top:8px;font-size:.9rem}.appearance-option small{margin-top:2px;color:var(--muted);font-size:.76rem}.theme-preview{display:grid;grid-template-columns:1fr 1fr 1fr;gap:3px;width:100%;height:54px;padding:8px;border-radius:5px}.theme-preview i{display:block;border-radius:3px}.preview-blue{background:#e8f1ff}.preview-blue i:nth-child(1){background:#2563eb}.preview-blue i:nth-child(2){background:#fff}.preview-blue i:nth-child(3){background:#f2c94c}.preview-forest{background:#e8f5ec}.preview-forest i:nth-child(1){background:#12805c}.preview-forest i:nth-child(2){background:#fff}.preview-forest i:nth-child(3){background:#f4b740}.preview-space{background:#0b1220}.preview-space i:nth-child(1){background:#38bdf8}.preview-space i:nth-child(2){background:#1e293b}.preview-space i:nth-child(3){background:#facc15}.preview-paper{background:#f4f3ed}.preview-paper i:nth-child(1){background:#315b8a}.preview-paper i:nth-child(2){background:#fff}.preview-paper i:nth-child(3){background:#d95d39}.question-preview{display:flex;align-items:center;justify-content:center;width:100%;height:62px;padding:8px;border-radius:5px;color:#1f2937;background:#eff6ff;font-weight:800}.notebook-preview{background-color:#fffef8;background-image:repeating-linear-gradient(to bottom,transparent 0,transparent 18px,#bdd7ee 19px,transparent 20px)}.focus-preview{color:#fff;background:#2563eb;font-size:1.12rem}.appearance-actions{display:flex;justify-content:space-between;gap:10px;padding-top:4px}.appearance-actions .btn{min-width:110px;padding-inline:16px}html[data-appearance=forest]{--bg: #eef7f1;--card: #ffffff;--text: #18352a;--muted: #5f746b;--primary: #12805c;--primary-hover: #0d684b;--secondary: #e2eee8;--secondary-hover: #d1e3d9;--border: #cbded3;--result-bg: #e6f5ec;--shadow: 0 12px 30px rgba(18, 128, 92, .12)}html[data-appearance=forest] body{background-color:var(--bg);background-image:repeating-linear-gradient(135deg,rgba(18,128,92,.035) 0,rgba(18,128,92,.035) 2px,transparent 2px,transparent 26px)}html[data-appearance=forest] .practice-card .question-box:not(.correct):not(.wrong){background:linear-gradient(145deg,#e5f6eb,#f7fbf8)}html[data-appearance=paper]{--bg: #f4f3ed;--card: #fffefa;--text: #273444;--muted: #66717c;--primary: #315b8a;--primary-hover: #24466d;--secondary: #e8ebed;--secondary-hover: #d9dfe3;--border: #d4d9dc;--result-bg: #edf2f6;--shadow: 0 12px 30px rgba(49, 91, 138, .1)}html[data-appearance=paper] body{background-color:var(--bg);background-image:repeating-linear-gradient(to bottom,transparent 0,transparent 31px,rgba(49,91,138,.055) 32px)}html[data-appearance=paper] .practice-card .question-box:not(.correct):not(.wrong){background:#fffdf5;border:1px solid #d8d7cd}html[data-appearance=space] body{background-color:#0b1220;background-image:radial-gradient(circle,rgba(255,255,255,.72) 0 1px,transparent 1.5px),radial-gradient(circle,rgba(56,189,248,.55) 0 1px,transparent 1.5px);background-position:0 0,26px 22px;background-size:58px 58px,74px 74px}html[data-appearance=space] .appearance-option{background:#0f172a}html[data-question-style=notebook] .practice-card .question-box:not(.correct):not(.wrong){border:1px solid #c9d8e6;background-color:#fffef8;background-image:linear-gradient(to right,transparent 0,transparent 46px,rgba(220,38,38,.2) 47px,transparent 48px),repeating-linear-gradient(to bottom,transparent 0,transparent 39px,rgba(49,91,138,.16) 40px,transparent 41px);color:#243b53}html[data-theme=dark][data-question-style=notebook] .practice-card .question-box:not(.correct):not(.wrong){border-color:#334155;color:#e2e8f0;background-color:#111827;background-image:repeating-linear-gradient(to bottom,transparent 0,transparent 39px,rgba(56,189,248,.16) 40px,transparent 41px)}html[data-question-style=focus] .practice-card .practice-heading{display:none}html[data-question-style=focus] .practice-card .focused-status{justify-content:center;margin-bottom:18px}html[data-question-style=focus] .practice-card .question-box{min-height:300px;font-size:5rem}html[data-question-style=focus] .practice-card .practice-qtag{display:none}html[data-question-style=focus] .answer-field{max-width:500px}html[data-question-style=focus] .answer-field input{min-height:68px;font-size:1.7rem}@media(max-width:700px){.appearance-options{grid-template-columns:repeat(2,minmax(0,1fr))}.question-style-options{grid-template-columns:1fr}.question-style-option{display:grid;grid-template-columns:112px 1fr;align-items:center;gap:10px}.question-style-option strong{margin:0}.question-preview{height:48px}}@media(max-width:560px){.app-header{align-items:center}.app-header .brand{gap:7px}.app-header .brand-mark{width:36px;height:36px;border-radius:11px}.app-header .brand strong{white-space:nowrap;font-size:.9rem}.app-header .header-tools{gap:1px}.app-header .header-tool{width:38px;min-width:38px;height:36px;padding:0}.app-header .header-tool-label{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.app-header .icon-button,.app-header .btn.tiny{min-height:40px;padding-inline:8px;font-size:.78rem}.appearance-dialog{max-height:calc(100vh - 24px);overflow-y:auto;padding:20px 16px}.appearance-actions{position:sticky;bottom:-20px;margin:0 -16px -20px;padding:12px 16px;border-top:1px solid var(--border);background:var(--card)}html[data-question-style=focus] .practice-card .question-box{min-height:230px;font-size:3.2rem}}@media(max-width:820px){.app-header{grid-template-columns:1fr auto}.config-heading{align-items:stretch;flex-direction:column}.config-heading .header-actions{justify-content:flex-start;flex-wrap:wrap}}@media(max-width:480px){.practice-empty{min-height:calc(100vh - 110px)}.gate-dialog{padding:24px 20px}.sticky-config-actions{position:sticky;z-index:20;bottom:calc(8px + env(safe-area-inset-bottom));display:grid;grid-template-columns:1fr 1fr;margin:18px -8px -8px;padding:8px;border:1px solid var(--border);border-radius:8px;background:color-mix(in srgb,var(--card) 94%,transparent);box-shadow:0 -8px 24px #0f172a1a;backdrop-filter:blur(8px)}.sticky-config-actions .primary{grid-column:1 / -1}}a.btn,a.btn:visited,a.btn:hover,a.btn:active{color:inherit;text-decoration:none}.header-actions .btn{white-space:nowrap}.header-actions a.btn.tiny,.header-actions button.btn.tiny{min-width:72px;height:34px;padding:0 12px;line-height:1;border:1px solid transparent;box-sizing:border-box}body.access-locked main.app>*:not(#siteLoginDialog){visibility:hidden;pointer-events:none}body.access-locked #siteLoginDialog{visibility:visible;pointer-events:auto}body.access-locked #siteLoginDialog:not([hidden]){z-index:200}.cloud-desc{margin:0 0 14px;color:var(--muted);line-height:1.55}.cloud-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}.cloud-actions .btn{flex:1 1 calc(50% - 8px);min-height:40px}.cloud-parent-link{display:inline-block;margin-top:14px;color:var(--primary);font-weight:700;text-decoration:none}.cloud-parent-link:hover{text-decoration:underline}@media(max-width:480px){.cloud-actions .btn{flex:1 1 100%}}.batch-empty-focus{outline:2px solid #2563eb!important;box-shadow:0 0 0 4px #2563eb2e}.sync-toast{margin-top:8px;color:#047857;font-size:.9rem}.parent-admin-link[hidden]{display:none!important}.finish-result-card{margin-top:12px;padding:12px 14px;border-radius:12px;background:color-mix(in srgb,var(--primary) 10%,#fff);border:1px solid color-mix(in srgb,var(--primary) 25%,#dbeafe)}.header-actions a.parent-admin-link.btn,.header-actions a.parent-admin-link.btn:visited,.header-actions a.parent-admin-link.btn:hover,.header-actions a.parent-admin-link.btn:active{text-decoration:none!important;border-bottom:0!important;color:inherit}.header-actions .parent-admin-link.btn.tiny{min-width:72px;height:34px;padding:0 12px;line-height:1;display:inline-flex;align-items:center;justify-content:center;box-sizing:border-box}.wrong-summary{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0 0 10px;padding:0}.wrong-tag{display:inline-flex;align-items:center;min-height:28px;padding:0 10px;border-radius:999px;background:color-mix(in srgb,var(--primary) 12%,#fff);border:1px solid color-mix(in srgb,var(--primary) 22%,#dbeafe);color:var(--text);font-size:.82rem;font-weight:600}.history-item.good strong{color:#059669}.history-item.mid strong{color:#d97706}.history-item.low strong{color:#dc2626}.daily-calendar{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:6px;margin-top:10px}.daily-calendar .day-cell{display:grid;gap:2px;justify-items:center;padding:6px 2px;border-radius:10px;background:color-mix(in srgb,var(--card) 88%,#dbeafe);border:1px solid var(--border);min-height:48px}.daily-calendar .day-cell .d{font-size:.72rem;color:var(--muted)}.daily-calendar .day-cell .v{font-size:.78rem;font-weight:700}.daily-calendar .day-cell.done{background:color-mix(in srgb,#059669 14%,#fff);border-color:color-mix(in srgb,#059669 35%,#d1fae5)}.daily-calendar .day-cell.today{box-shadow:0 0 0 2px color-mix(in srgb,var(--primary) 35%,transparent)}*:focus-visible{outline:3px solid var(--focus-ring);outline-offset:3px}.header-tool[data-state=pending],.header-tool[data-state=syncing]{color:var(--primary)}.header-tool[data-state=failed],.header-tool[data-state=dead]{color:var(--error);background:var(--error-bg)}.header-tool[data-state=syncing] svg{animation:sync-rotate 1.2s linear infinite}@keyframes sync-rotate{to{transform:rotate(360deg)}}.sync-center-dialog{width:min(560px,calc(100vw - 32px));max-width:560px;text-align:left}.sync-center-summary{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-bottom:var(--space-4);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.sync-center-summary>div{padding:var(--space-3) var(--space-2);border-right:1px solid var(--border);text-align:center}.sync-center-summary>div:last-child{border-right:0}.sync-center-summary span,.sync-center-summary strong{display:block}.sync-center-summary span{color:var(--muted);font-size:.78rem}.sync-center-summary strong{margin-top:var(--space-1);font-size:1.2rem}.sync-center-list{max-height:min(42vh,360px);overflow:auto;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.sync-center-item{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3);min-height:58px;padding:var(--space-2) 0;border-bottom:1px solid var(--border)}.sync-center-item:last-child{border-bottom:0}.sync-center-item>div span{display:block;margin-top:var(--space-1);color:var(--muted);font-size:.75rem}.sync-state{flex:0 0 auto;color:var(--muted);font-size:.82rem;font-weight:700}.sync-center-item[data-status=dead] .sync-state,.sync-center-item[data-status=failed] .sync-state{color:var(--error)}.sync-center-item[data-status=syncing] .sync-state{color:var(--primary)}.sync-center-empty{margin:0;padding:var(--space-6) 0;color:var(--muted);text-align:center}.sync-center-actions{display:flex;justify-content:space-between;gap:var(--space-2);margin-top:var(--space-4)}.sync-center-actions .btn{min-width:120px;padding-inline:var(--space-4)}@media(max-width:560px){.sync-center-summary{grid-template-columns:repeat(2,minmax(0,1fr))}.sync-center-summary>div:nth-child(2){border-right:0}.sync-center-summary>div:nth-child(-n+2){border-bottom:1px solid var(--border)}.sync-center-actions{align-items:stretch;flex-direction:column-reverse}.sync-center-actions .btn{width:100%}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}.skip-link{transition:none}}@media(forced-colors:active){.btn,.header-tool,.icon-button,.question-box,.result,.gate-dialog{border:1px solid ButtonText}.question-box.correct,.result.success{border-style:double}.question-box.wrong,.result.error{border-width:3px}}