:root{color-scheme:light;--paper:#fffdf8;--white:#fff;--ink:#17263f;--muted:#626e80;--line:#e1e5e9;--blue:#2666e6;--blue-pale:#eef3fd;--green:#197349;--red:#bd2e29;--amber:#835c14;--neutral:#606975;--radius:14px;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-size:15px;line-height:1.5}
*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit}button,a,input,textarea{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer;border:0;color:inherit;background:none}button:disabled{opacity:.4;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid #82a8f8;outline-offset:3px}a{color:var(--blue);text-underline-offset:4px}input,textarea{color:var(--ink);caret-color:var(--blue)}input::placeholder{color:#687486}::selection{background:#dce8ff}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-thumb{background:#bbc4d0;border-radius:8px}::-webkit-scrollbar-track{background:transparent}h1,h2,h3,p{margin:0}h1{font-size:1.6rem;line-height:1.3}h2{font-size:1.2rem;line-height:1.4}h3{font-size:1rem}p{max-width:70ch}.muted,.ai-note,.sync-note{color:var(--muted);font-size:.86rem}.sr-only{position:absolute;width:1px;height:1px;clip-path:inset(50%);overflow:hidden;white-space:nowrap}[hidden]{display:none!important}.icon{width:20px;height:20px;flex-shrink:0;fill:none;stroke:currentColor;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}.primary{background:var(--blue);color:white;border-radius:12px;min-height:44px;padding:10px 22px;font-weight:650}.primary:hover{background:#1855c9}.quiet{padding:9px 12px;border-radius:9px;font-size:.9rem;text-decoration:none}.quiet:hover{background:var(--blue-pale)}.icon-button{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px}.icon-button:hover{background:var(--blue-pale)}.topbar{height:78px;border-bottom:1px solid var(--line);display:flex;gap:36px;align-items:center;padding:0 32px;background:var(--paper)}.brand{display:flex;align-items:center;gap:10px;white-space:nowrap;color:var(--ink);text-decoration:none}.brand strong{font-size:1.24rem}.brand span{border-left:1px solid #cad1da;padding-left:12px;color:var(--muted);font-size:.85rem}.topbar nav{display:flex;align-self:stretch;gap:8px;flex:1}.nav{font-weight:550;padding:0 18px;position:relative;white-space:nowrap}.nav.active{color:var(--blue)}.nav.active:after{content:"";height:3px;background:var(--blue);position:absolute;bottom:-1px;left:16px;right:16px;border-radius:3px}.nav:hover{background:#f3f5f8}.nav span:not(:empty){display:inline-block;padding:0 7px;margin-left:4px;border-radius:12px;background:#f8e5e3;color:var(--red);font-size:.8rem;font-variant-numeric:tabular-nums}.notice{padding:10px 32px;background:#fff0d7;color:#734d0c;font-size:.9rem}.study{display:grid;grid-template-columns:248px minmax(0,1fr);min-height:calc(100vh - 78px)}.records{border-right:1px solid var(--line);padding:26px 16px;background:#fafaf8}.list-heading{display:flex;align-items:center;justify-content:space-between;padding:0 8px;margin-bottom:16px}.list-heading h1{font-size:1.08rem}.search{display:block;margin:0 8px 20px}.search input{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px 12px;background:white;font-size:.88rem}.record{display:flex;gap:12px;width:100%;text-align:left;padding:14px 12px;margin:3px 0;border-radius:12px;align-items:center}.record:hover{background:#f0f3f7}.record.selected{background:#eaf1fd}.record img{width:40px;height:52px;object-fit:cover;border-radius:5px;background:#e1e5e9}.record .record-text{min-width:0;flex:1}.record strong{font-size:.92rem;font-weight:650;display:block}.record small{font-size:.78rem;color:var(--muted);display:block;margin-top:4px}.record .badge{color:var(--red);display:flex;gap:3px;align-items:center;font-size:.8rem}.record .badge .icon{width:15px;height:15px}.sync-note{padding:22px 12px}.content{padding:28px 32px 24px;min-width:0}.record-title{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:24px}.record-title h2{font-size:1.65rem}.record-title p{margin-top:6px;color:var(--muted);font-size:.88rem}.review-layout{display:grid;grid-template-columns:minmax(300px,1.25fr) minmax(310px,1fr);gap:28px;align-items:start}.photo-area{min-width:0;background:#f0f1ef;border-radius:var(--radius);overflow:hidden}.photo-toolbar{display:flex;gap:8px;align-items:center;padding:8px;background:#f8f9f7;border-bottom:1px solid #e0e3e2}.photo-toolbar>div{display:flex;align-items:center;white-space:nowrap;font-variant-numeric:tabular-nums;font-size:.85rem}.photo-toolbar .quiet{padding:8px}.zoom{display:flex;align-items:center;gap:6px;margin-left:auto;font-size:.78rem;color:var(--muted)}.zoom input{width:72px;accent-color:var(--blue)}.paper{height:calc(100vh - 306px);min-height:400px;max-height:760px;overflow:auto;display:block;padding:20px;text-align:center}.paper img{display:block;width:100%;height:auto;box-shadow:0 4px 14px #17263f13}.paper p{margin:auto;padding-top:80px;color:var(--muted)}.photo-strip{display:flex;gap:8px;padding:12px 16px;overflow-x:auto;border-top:1px solid #e0e3e2}.thumb{padding:3px;border-radius:8px;border:2px solid transparent;flex-shrink:0}.thumb.selected{border-color:var(--blue)}.thumb img{display:block;width:42px;height:52px;object-fit:cover;border-radius:3px}.thumb span{display:block;font-size:.72rem}.results{padding:2px 0 0;min-width:0}.result-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.counts{display:flex;gap:16px;font-weight:650;font-variant-numeric:tabular-nums}.count{display:flex;align-items:center;gap:5px}.correct{color:var(--green)}.incorrect{color:var(--red)}.needs_review{color:var(--amber)}.unanswered{color:var(--neutral)}.coverage{color:#765518;background:#fff3dc;border-radius:8px;padding:9px 12px;font-size:.82rem;margin-top:16px}.filter-row{display:flex;gap:8px;margin:22px 0 16px}.filter{padding:7px 14px;border-radius:8px;font-size:.86rem;min-height:38px}.filter.active{background:var(--ink);color:white}.filter:not(.active):hover{background:#f0f2f4}.question-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(64px,1fr));gap:9px}.question{border-radius:12px;padding:11px 5px;min-height:74px;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:7px;background:#f4f6f5;border:2px solid transparent;font-weight:650;font-size:.84rem;overflow-wrap:anywhere}.question.correct{background:#edf6ef}.question.incorrect{background:#fbeeed}.question.needs_review{background:#fff3dc}.question.unanswered{background:#f0f1f3}.question.selected{border-color:currentColor}.question:hover{filter:brightness(.97)}.question .icon{width:23px;height:23px}.question.done{position:relative}.question.done:after{content:"已订正";font-size:.65rem;font-weight:500;color:var(--muted)}.detail{border-top:1px solid var(--line);margin-top:24px;padding-top:22px}.detail-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.verdict-label{display:flex;align-items:center;gap:7px;font-size:.87rem;font-weight:650}.question-text{font-size:1rem;line-height:1.7;white-space:pre-wrap;overflow-wrap:anywhere}.answers{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:20px 0}.answers dt{font-size:.78rem;color:var(--muted);margin-bottom:7px}.answers dd{font-size:1.05rem;font-weight:600;white-space:pre-wrap;overflow-wrap:anywhere;margin:0}.explanation{font-size:.9rem;line-height:1.8;color:#4b596c;white-space:pre-wrap;overflow-wrap:anywhere}.review-action{display:flex;gap:8px;align-items:center;margin:20px 0 0;min-height:44px;font-size:.9rem}.review-action input{width:18px;height:18px;accent-color:var(--green)}.note-label{font-size:.8rem;color:var(--muted);display:block;margin-top:14px}.note-label textarea{display:block;width:100%;margin-top:7px;padding:10px;border:1px solid var(--line);border-radius:9px;resize:vertical;min-height:70px;background:white}.save-note{margin-top:8px;color:var(--blue)}.ai-note{margin-top:24px;font-size:.75rem}.empty{min-height:65vh;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:16px;padding:40px;text-align:center}.empty p{color:var(--muted)}.empty .primary{margin-top:6px}.settings{max-width:820px;padding:48px 32px 80px;margin:0 auto}.settings>p{color:var(--muted);margin-top:12px}.connection{padding:28px 0 36px;border-bottom:1px solid var(--line);margin-bottom:32px}.connection label{font-size:.85rem;color:var(--muted);display:block}.connection input{width:100%;max-width:480px;display:block;margin:8px 0;border:1px solid var(--line);background:white;border-radius:10px;padding:12px}.connection .primary{display:block;margin:16px 0}.connection .muted{margin-top:12px}#pairing{margin:20px 0}#pairing span{font-size:.8rem;color:var(--muted)}#pair-code{display:block;font-size:2.3rem;letter-spacing:.1em;color:var(--blue);font-variant-numeric:tabular-nums}#pair-expiry{font-size:.85rem;color:var(--muted)}.device{padding:20px 0;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:16px}.device p{color:var(--muted);font-size:.8rem;margin-top:5px}.device button{color:var(--red)}.login{min-height:100vh;display:grid;place-items:center;padding:24px}.login form{width:100%;max-width:340px}.login h1{font-size:2rem;margin:20px 0 10px}.login p{color:var(--muted)}.login label{display:block;margin:36px 0 8px}.login input{width:100%;padding:13px;border:1px solid var(--line);border-radius:10px;background:white}.login .primary{margin-top:20px;width:100%}.login .error{color:var(--red);margin-top:16px;min-height:24px}.initial-loading{min-height:100vh;display:grid;place-items:center;color:var(--muted)}.print-content{display:none}
@media(min-width:1600px){.content{padding-left:48px;padding-right:48px}.review-layout{gap:40px;grid-template-columns:minmax(400px,1.5fr) minmax(360px,1fr)}}
@media(max-width:1180px){.study{grid-template-columns:210px minmax(0,1fr)}.content{padding:24px}.review-layout{grid-template-columns:minmax(260px,1fr) minmax(260px,1fr);gap:20px}.zoom{display:none}.topbar{gap:20px;padding:0 24px}.brand span{display:none}.counts{gap:10px}}
@media(max-width:900px){.study{grid-template-columns:180px minmax(0,1fr)}.records{padding:20px 8px}.record{padding:12px 8px}.record img{display:none}.review-layout{grid-template-columns:1fr}.paper{height:430px;min-height:300px}.results{padding-top:8px}.zoom{display:flex}.content{padding:22px}.topbar{gap:16px}.nav{padding:0 10px}}
@media(max-width:620px){.topbar{height:auto;min-height:110px;padding:14px 18px 0;flex-wrap:wrap;gap:6px}.brand{flex:1}.brand strong{font-size:1.1rem}.topbar nav{order:3;flex-basis:100%;height:45px;justify-content:space-around}.nav{padding:0 12px}.study{display:block}.records{border-right:0;border-bottom:1px solid var(--line);padding:16px}.list-heading{margin-bottom:4px}.search{margin:8px 8px 12px}#record-list{display:flex;overflow:auto;gap:6px}.record{flex:0 0 156px;margin:0}.sync-note{display:none}.content{padding:24px 18px}.record-title h2{font-size:1.4rem}.record-title{margin-bottom:18px}.paper{height:380px;padding:14px}.photo-toolbar{gap:2px}.photo-toolbar .quiet{font-size:.78rem}.results{margin-top:8px}.question-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.settings{padding:32px 22px}.notice{padding:10px 18px}.empty{padding:48px 24px;min-height:48vh}}
@media print{.topbar,.records,.notice,.record-title button,.review-layout,.settings{display:none!important}.study{display:block}.content{padding:0}.print-content{display:block}.print-page{break-inside:avoid;border-top:1px solid #ddd;padding:14px 0}.print-question{break-inside:avoid;padding:10px 0}.print-question p{white-space:pre-wrap}.print-question h3{display:flex;gap:8px;align-items:center}.print-content .icon{width:18px;height:18px}body{background:white;color:black}}
@media(prefers-reduced-motion:no-preference){button{transition:background-color .15s ease-out,border-color .15s ease-out}.notice{animation:notice-in .2s ease-out}@keyframes notice-in{from{clip-path:inset(0 0 100%)}to{clip-path:inset(0)}}}
