:root{--bg:#f4f6fa;--ink:#152843;--muted:#728096;--blue:#245cd6;--line:#dfe5ef;--orange:#eb8b35}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:0}button:disabled{opacity:.45;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #8bb4ff;outline-offset:3px}a{color:inherit;text-decoration:none}.topbar{height:86px;max-width:1440px;margin:auto;padding:0 48px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:16px}.brand{display:flex;gap:10px;align-items:center;font-size:26px;color:var(--blue);font-weight:800}.brand span{font-size:20px;color:var(--ink)}.muted,.hint{color:var(--muted);font-size:13px;line-height:1.9}.phone{max-width:600px;margin:55px auto 70px;padding:0 24px;min-height:65vh}.eyebrow{font-size:11px;letter-spacing:3px;font-weight:700;color:var(--blue);margin-bottom:20px}h1{font-size:42px;line-height:1.4;letter-spacing:-1px;margin:0 0 18px;font-weight:800}.accent{color:var(--blue)}.intro{color:var(--muted);line-height:1.8;font-size:15px;margin:0 0 28px}.rules{display:flex;margin:34px 0;gap:0}.rules>div{width:33.33%;border-right:1px solid var(--line);padding-left:28px}.rules>div:first-child{padding-left:0}.rules>div:last-child{border:0}.rules strong{font-size:32px;display:block;font-variant-numeric:tabular-nums}.rules small{font-size:13px}.rules span{display:block;font-size:12px;color:var(--muted);margin-top:5px}.panel{background:white;border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:0 10px 40px #182d4f05}label{display:block;font-size:14px;font-weight:600;margin-bottom:20px}input,select{display:block;background:#f8faff;border:1px solid var(--line);padding:14px 16px;width:100%;border-radius:10px;color:var(--ink);margin-top:10px;min-width:0}input::placeholder{color:#9aa6b7}.primary,.secondary,.button{display:flex;align-items:center;justify-content:center;gap:16px;border-radius:10px;padding:15px 20px;font-size:15px;font-weight:600;min-height:50px}.primary{background:var(--blue);color:white;box-shadow:0 4px 12px #245cd620}.primary:hover{background:#1849b4}.secondary{background:#e9eef7;color:#435673}form .primary{width:100%;justify-content:space-between}.center{text-align:center}#error,#url-error{color:#b52d34;font-size:13px;line-height:1.7}#error:empty{display:none}footer{max-width:1440px;margin:auto;border-top:1px solid var(--line);padding:20px 48px;color:#8b98a9;font-size:11px;display:flex;justify-content:space-between}.exam-meta{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:14px}.exam-meta small{color:var(--muted)}.clock{background:#e8eefc;padding:10px 14px;border-radius:8px;font-size:22px;color:var(--blue);font-weight:700;font-variant-numeric:tabular-nums;white-space:nowrap}.clock.urgent{color:#c43636;background:#ffeded}.progress{height:5px;border-radius:8px;background:#dfe6f2;margin:20px 0 32px;overflow:hidden}.progress i{display:block;height:100%;background:var(--blue);transition:width .2s}.question-meta{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:13px;margin-bottom:20px}.tag{display:inline-block;color:var(--blue);background:#eaf0ff;font-size:12px;padding:6px 12px;border-radius:6px;font-weight:600}h2{font-size:23px;line-height:1.7;margin:0 0 12px}.options{display:grid;gap:12px;margin-top:26px}.option{display:flex;align-items:center;text-align:left;gap:14px;background:white;border:1px solid var(--line);border-radius:12px;padding:18px;color:var(--ink);line-height:1.6;min-height:68px;width:100%}.option-key{flex-shrink:0;border:1px solid var(--line);border-radius:7px;width:30px;height:30px;display:grid;place-items:center;font-weight:600}.option.selected{background:#edf3ff;border-color:var(--blue);color:#204d9e}.selected .option-key{background:var(--blue);color:white;border-color:var(--blue)}.check{margin-left:auto;color:var(--blue)}.save-status{font-size:12px;color:var(--muted);margin:18px 0 26px}.navigation{display:flex;gap:12px}.navigation>*{flex:1}.answer-map{display:grid;grid-template-columns:repeat(10,1fr);gap:7px;margin-top:32px}.answer-map button{border:1px solid var(--line);background:white;color:var(--muted);border-radius:6px;min-height:34px;padding:0}.answer-map .answered{background:#e4edff;color:var(--blue);border-color:#becff6}.answer-map .current{outline:2px solid var(--blue);outline-offset:2px}.result-icon{display:grid;place-items:center;background:#e2f3ea;color:#258953;border:1px solid #c9e9d7;border-radius:50%;height:60px;width:60px;font-size:28px;margin:0 0 28px}.score{font-size:100px;font-weight:800;color:var(--blue);margin:32px 0;line-height:1}.score small{font-size:20px;font-weight:500;color:var(--muted)}.result-detail>div{display:flex;justify-content:space-between;gap:20px;padding:14px 0;font-size:14px}.result-detail span{color:var(--muted);white-space:nowrap}.result-detail strong{font-weight:600;text-align:right;overflow-wrap:anywhere}.result-detail small{font-size:11px;color:var(--muted)}dialog{border:1px solid var(--line);border-radius:18px;padding:28px;max-width:420px;width:90%;color:var(--ink)}dialog::backdrop{background:#15284377}.live{display:flex;gap:10px;align-items:center;font-size:12px;color:var(--muted)}.live i{background:#33b785;width:7px;height:7px;border-radius:100%}.subtle{background:transparent;color:var(--muted);margin-left:12px}.screen-layout{max-width:1440px;margin:40px auto;padding:0 48px;display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:48px;min-height:70vh}.ranking h1{font-size:38px;margin-bottom:32px}.board-heading{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:10px}.board-heading h2{font-size:18px;margin:0}.board-heading h2 span{font-size:11px;color:var(--orange);margin-left:10px;letter-spacing:2px}.board-heading p{font-size:11px;color:var(--muted)}table{border-collapse:collapse;width:100%;text-align:left;table-layout:fixed}th{font-size:11px;letter-spacing:1px;font-weight:500;color:var(--muted);border-bottom:1px solid var(--line);padding:14px 12px}th:first-child{width:14%}th:nth-child(2){width:43%}th:nth-child(3){width:20%}td{padding:10px 12px;border-bottom:1px solid var(--line);font-size:14px;height:59px;overflow-wrap:anywhere}td strong{display:block;font-size:14px;font-weight:600}td small{display:block;color:var(--muted);font-size:11px;margin-top:3px}.rank{font-size:17px;font-weight:700;color:#9aa5b6}.rank-1{color:#bd8b26}.rank-2{color:#6c829f}.rank-3{color:#b77e61}.points{font-size:22px;font-weight:700;color:var(--blue)}.points small,.elapsed small{display:inline;font-size:11px;font-weight:400}.elapsed{font-variant-numeric:tabular-nums;color:#50627d;font-size:16px}.scan{align-self:start;text-align:center;padding:28px 24px}.scan h2{font-size:28px;line-height:1.5;margin:20px 0}.qr{padding:12px;background:white;border:1px solid var(--line);border-radius:12px}.qr img{width:100%;height:auto;display:block;aspect-ratio:1}.scan>p{font-size:12px;color:var(--muted);margin:18px 0 6px}#entry-url{font-size:11px;overflow-wrap:anywhere;color:var(--blue)}.scan-rules{display:flex;justify-content:space-between;font-size:11px;color:var(--muted);margin:24px 0;padding-bottom:24px;border-bottom:1px solid var(--line)}.scan-rules b{color:var(--ink);font-size:15px}.stats{display:flex;justify-content:space-around}.stats strong{display:block;font-size:26px}.stats span{display:block;font-size:11px;color:var(--muted);margin-top:6px}details{margin-top:24px;text-align:left;font-size:12px;color:var(--muted);border-top:1px solid var(--line);padding-top:18px}summary{cursor:pointer}details input,details select{font-size:11px;padding:10px}details button{font-size:12px;width:100%;margin-top:10px;min-height:38px;padding:10px}.empty{text-align:center;color:var(--muted);height:300px;line-height:2.4;font-size:15px}.empty small{font-size:12px}@media(min-width:1600px){.screen-layout{margin-top:60px;gap:70px}.screen td{height:65px}.ranking h1{font-size:46px}}@media(max-width:900px){.screen-layout{padding:0 24px;gap:24px;grid-template-columns:minmax(0,1fr) 260px}.ranking h1{font-size:29px}.board-heading{display:block}.scan{padding:22px 18px}.topbar{padding:0 24px}.elapsed{font-size:13px}td,th{padding:10px 6px}}@media(max-width:650px){.topbar{height:70px;padding:0 20px}.brand span{font-size:17px}.topbar>.muted{font-size:10px}.phone{margin-top:32px;padding:0 20px}h1{font-size:36px}.panel{padding:24px}.rules strong{font-size:28px}.rules>div{padding-left:20px}h2{font-size:21px}.option{padding:15px;gap:10px;font-size:15px}.exam-meta small{display:block;font-size:11px;margin-top:3px;max-width:220px;overflow-wrap:anywhere}.answer-map{gap:6px}.answer-map button{min-height:30px;font-size:12px}footer{padding:18px 20px}.screen-layout{display:flex;flex-direction:column;margin-top:28px;padding:0 20px}.ranking{width:100%}.ranking h1{font-size:28px}.scan{width:100%;max-width:350px;align-self:center}.live{gap:6px;font-size:10px}.subtle{font-size:10px;margin-left:2px}.score{font-size:86px}}

/* 排行榜大屏使用全部可用宽度。 */
.screen .screen-layout{display:block}.screen .ranking{width:100%}
.waiting{text-align:center;padding-top:16px}.waiting-symbol{display:grid;place-items:center;width:72px;height:72px;margin:0 auto 22px;border-radius:50%;background:#e5edff;color:var(--blue);font-size:42px}.waiting h1{font-size:30px;margin-top:20px}.waiting-time{padding:24px 8px;margin-bottom:20px}.waiting-time>span{display:block;font-size:12px;color:var(--muted)}.waiting-time strong{display:block;font-size:26px;margin-top:14px;font-variant-numeric:tabular-nums;color:var(--blue)}#start-countdown{font-size:14px;color:var(--muted);min-height:22px}.waiting-rules{text-align:left}.waiting-rules h2{font-size:18px}.waiting-rules p{font-size:13px;line-height:1.9;color:#52637b}.admin-shell{max-width:1100px;margin:40px auto 80px;padding:0 24px}.admin-login{max-width:470px;margin:80px auto}.admin-login h1{font-size:30px}.admin-title{display:flex;align-items:center;justify-content:space-between;gap:16px}.admin-title h1{font-size:36px}.admin-title .eyebrow{margin-bottom:10px}.schedule{margin:24px 0 32px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:16px}.section-heading h2{font-size:21px;margin:0}.schedule-grid{display:grid;grid-template-columns:.75fr 1fr 1fr;gap:22px;margin-top:20px}.schedule-grid label{font-size:13px}.schedule-grid input{font-size:13px;padding:12px}.question-heading{margin:30px 0 22px}.question-heading .tag{margin-left:10px}.editor-question{margin-bottom:22px}.editor-heading{display:flex;align-items:center;gap:18px;margin-bottom:20px}.editor-heading h2{margin:0;font-size:20px;white-space:nowrap}.editor-heading select{width:115px;margin:0;padding:8px 12px;font-size:13px}.editor-heading>span{margin-left:auto}textarea{display:block;width:100%;font:inherit;line-height:1.8;background:#f8faff;border:1px solid var(--line);padding:12px 15px;border-radius:10px;margin-top:10px;color:var(--ink);resize:vertical;min-height:80px}textarea:focus-visible{outline:3px solid #8bb4ff;outline-offset:3px}.editor-fields{display:grid;grid-template-columns:1fr 1fr;gap:32px}.field-note{display:block;font-size:11px;color:var(--muted);font-weight:400;margin-top:7px}.editor-fields fieldset{border:0;margin:0;padding:0;min-width:0}.editor-fields legend{font-size:14px;font-weight:600;margin-bottom:12px}.correct-options label{display:flex;align-items:flex-start;gap:10px;margin-bottom:10px;font-weight:400;cursor:pointer;font-size:13px;line-height:1.7}.correct-options input{width:17px;height:17px;display:inline;margin:3px 0 0;accent-color:var(--blue);flex-shrink:0;padding:0}.correct-options small{font-size:12px;color:var(--muted);overflow-wrap:anywhere}.admin-savebar{position:sticky;bottom:16px;display:flex;align-items:center;justify-content:space-between;gap:16px;background:#fff;border:1px solid var(--line);box-shadow:0 4px 30px #15284316;border-radius:14px;padding:14px 20px;z-index:5}.admin-message{font-size:13px;color:var(--blue);line-height:1.7}.admin-message.error{color:#b52d34}.admin-entry{display:flex;justify-content:space-between;gap:24px;align-items:center;margin-top:28px}.admin-entry h2{font-size:20px}.admin-entry img{width:150px;height:150px}.admin-entry a{color:var(--blue);font-size:13px;overflow-wrap:anywhere}@media(max-width:750px){.schedule-grid{grid-template-columns:1fr;gap:0}.editor-fields{grid-template-columns:1fr;gap:16px}.admin-shell{padding:0 18px;margin-top:24px}.admin-title h1{font-size:28px}.admin-title .secondary{font-size:12px;padding:10px}.section-heading{align-items:flex-start;flex-wrap:wrap}.admin-savebar{bottom:8px;padding:12px}.admin-savebar .primary{white-space:nowrap;font-size:13px}.admin-entry{flex-direction:column;align-items:flex-start}.waiting-time strong{font-size:22px}.admin-login{margin:40px auto}.admin-shell .panel{padding:20px}}