:root{--bg: #e8edf2;--paper: #fbfaf6;--ink: #1c2430;--muted: #5c6b7a;--line: #d4cfc4;--red: #b42318;--green: #1b7a4a;--stamp: #c43b3b;--accent: #1e4d8c;--accent-2: #c9a227;--chip: #eef3f8;--shadow: 0 10px 30px rgba(28, 36, 48, .08);font-family:"Source Han Serif SC","Noto Serif SC",Songti SC,SimSun,Times New Roman,serif;color:var(--ink);background:var(--bg)}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%;-webkit-text-size-adjust:100%;text-size-adjust:100%}body{background:radial-gradient(1200px 400px at 50% -80px,rgba(30,77,140,.08),transparent),var(--bg)}button,input,select{font-family:Source Han Sans SC,Noto Sans SC,PingFang SC,Microsoft YaHei,sans-serif;font-size:16px}.shell{max-width:960px;margin:0 auto;padding:32px 20px 64px;padding-left:max(20px,env(safe-area-inset-left));padding-right:max(20px,env(safe-area-inset-right))}.paper{background:var(--paper);border:1px solid var(--line);box-shadow:var(--shadow);padding:36px 40px 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16px;cursor:pointer;font-size:14px;letter-spacing:.06em;min-height:44px;touch-action:manipulation}.btn.ghost{background:transparent;color:var(--ink)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn.danger{background:var(--stamp);border-color:var(--stamp)}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:16px 0 24px}.stat{background:var(--chip);padding:14px 16px;font-family:Source Han Sans SC,Noto Sans SC,sans-serif}.stat b{display:block;font-size:22px;font-family:"Source Han Serif SC",serif}.stat span{color:var(--muted);font-size:12px}.chapters{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 20px}.chip{font-family:Source Han Sans SC,Noto Sans SC,sans-serif;font-size:13px;border:1px solid var(--line);background:#fff;padding:8px 12px;min-height:40px;cursor:pointer;touch-action:manipulation}.chip.on{border-color:var(--accent);color:var(--accent);background:#e8f0fa}.msg{font-family:Source Han Sans SC,Noto Sans SC,sans-serif;color:var(--red);min-height:1.4em;margin:8px 0}.hidden-file{display:none}.q-stem{font-size:18px;line-height:1.7;margin:12px 0 20px}.q-meta{font-family:Source Han Sans SC,Noto Sans SC,sans-serif;color:var(--muted);font-size:13px}.options{display:flex;flex-direction:column;gap:8px}.opt{display:flex;gap:10px;align-items:flex-start;border:1px solid var(--line);padding:12px 14px;min-height:48px;background:#fff;cursor:pointer;font-family:Source Han Sans SC,Noto Sans SC,sans-serif;text-align:left;touch-action:manipulation}.opt span{overflow-wrap:anywhere;line-height:1.55}.opt input{margin-top:3px;flex-shrink:0}.opt.on{border-color:var(--accent);background:#eef4fb}.opt.good{border-color:var(--green);background:#e8f6ee}.opt.bad{border-color:var(--red);background:#fdeeee}.feedback{margin-top:16px;padding:12px 14px;border-left:4px solid var(--accent-2);background:#fff8e8;font-family:Source Han Sans SC,Noto Sans SC,sans-serif;line-height:1.6}.feedback.ok{border-left-color:var(--green);background:#eef8f2}.feedback.err{border-left-color:var(--red);background:#fdf1f0}.exam-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;font-family:Source Han Sans SC,Noto Sans SC,sans-serif;margin-bottom:16px;padding:10px 12px;background:#fff;border:1px dashed var(--line)}.exam-bar-meta{color:var(--muted);font-size:13px;flex:1;text-align:right}.timer.warn{color:var(--red);font-weight:700}.grid-nav{display:flex;flex-wrap:wrap;gap:6px;margin:16px 0}.grid-nav button{width:40px;height:40px;border:1px solid var(--line);background:#fff;cursor:pointer;touch-action:manipulation}.grid-nav button.done{background:var(--accent);color:#fff;border-color:var(--accent)}.grid-nav button.cur{outline:2px solid var(--accent-2)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px 20px;font-family:Source Han Sans SC,Noto Sans SC,sans-serif;margin:16px 0}.form-grid label{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted)}.form-grid input[type=number],.form-grid input[type=text]{padding:10px 12px;border:1px solid var(--line);font-size:16px;min-height:44px;width:100%;max-width:100%}.field-static{padding:8px 10px;border:1px solid var(--line);background:#fff;font-size:16px;color:var(--ink)}.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:8px 0 20px}.rank-table{width:100%;min-width:420px;border-collapse:collapse;font-family:Source Han Sans SC,Noto Sans SC,sans-serif}.rank-table th,.rank-table td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line)}.rank-table th{color:var(--muted);font-size:13px;font-weight:500}.rank-table tr.me td{background:#fff8e8;font-weight:600}.rule-card{border:1px dashed var(--line);background:#fff;padding:14px 16px;margin:8px 0 16px}.rule-title{font-size:16px;letter-spacing:.08em;margin-bottom:4px}.rule-lines{display:flex;flex-wrap:wrap;gap:10px 16px;margin-top:8px;font-family:Source Han Sans SC,Noto Sans SC,sans-serif;font-size:13px;color:var(--muted)}.level-tag{display:inline-block;margin:8px 0 4px;padding:4px 12px;font-family:Source Han Sans SC,Noto Sans SC,sans-serif;letter-spacing:.2em;border:2px solid var(--stamp);color:var(--stamp)}.level-tag.excellent{border-color:var(--accent-2);color:#8a6d12}.level-tag.pass{border-color:var(--green);color:var(--green)}.level-tag.fail{border-color:var(--stamp);color:var(--stamp)}.score-hero{text-align:center;padding:12px 0 24px}.score-hero .num{font-size:64px;letter-spacing:.08em;line-height:1}.wrong-list{display:flex;flex-direction:column;gap:14px}.wrong-item{border-bottom:1px solid var(--line);padding-bottom:12px}@media (max-width: 720px){.shell{padding:12px 12px 96px;padding-left:max(12px,env(safe-area-inset-left));padding-right:max(12px,env(safe-area-inset-right));padding-bottom:max(96px,calc(72px + env(safe-area-inset-bottom)))}.paper{padding:18px 14px 24px;border-left:none;border-right:none}.paper:before{top:4px;right:4px;bottom:4px;left:4px}.masthead{margin-bottom:16px;padding-bottom:12px}.masthead h1{font-size:20px;letter-spacing:.06em}.masthead p{font-size:13px;line-height:1.5}.seal{width:52px;height:52px;font-size:11px;border-width:2px}.stats{grid-template-columns:1fr 1fr;gap:8px}.stat{padding:12px}.stat b{font-size:20px}.form-grid{grid-template-columns:1fr;gap:12px}.toolbar{gap:8px}.toolbar .btn{flex:1 1 calc(50% - 8px);min-width:0}.q-stem{font-size:16px;line-height:1.65;overflow-wrap:anywhere}.q-meta{font-size:12px;line-height:1.5}.score-hero .num{font-size:48px}.exam-bar.sticky-exam{position:sticky;top:0;z-index:20;margin:0 -14px 16px;padding:10px 14px;padding-top:max(10px,env(safe-area-inset-top));background:var(--paper);border:none;border-bottom:1px solid var(--line);box-shadow:0 4px 12px #1c24300f}.exam-bar-meta{display:none}.sticky-actions{position:sticky;bottom:0;z-index:20;margin:16px -14px -24px;padding:10px 14px;padding-bottom:max(10px,env(safe-area-inset-bottom));background:var(--paper);border-top:1px solid var(--line);box-shadow:0 -4px 12px #1c24300f}.sticky-actions .btn{flex:1}.grid-nav{gap:8px}.grid-nav button{width:44px;height:44px}.wrong-item .q-stem{font-size:15px}}@media (max-width: 400px){.toolbar .btn{flex:1 1 100%}.seal{display:none}}