/* V2: one stylesheet; no version-specific override layers. */
:root{--bg:#f5f7fb;--paper:#fff;--ink:#25344b;--muted:#8390a3;--line:#e7ecf3;--blue:#347cf4;--pale:#edf4ff;--green:#1aa67d;--red:#e45f68;--radius:16px;font-synthesis:none}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
body{overflow-x:hidden}button,input,select,textarea{font:inherit}button{cursor:pointer;-webkit-tap-highlight-color:transparent}button:disabled{cursor:not-allowed;opacity:.4}button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible{outline:3px solid #91baff;outline-offset:3px}button{touch-action:manipulation}button svg,svg.ui-icon{width:20px;height:20px;flex:none}a{color:var(--blue)}[hidden]{display:none!important}h1,h2,h3,p{margin-top:0}strong,b{font-weight:650}input[type=checkbox]{accent-color:var(--blue)}
.app-shell{max-width:1096px;margin:0 auto;padding:0 28px 35px}.app-header{height:86px;display:flex;align-items:center;gap:16px;justify-content:space-between}
.brand{border:0;background:transparent;display:flex;align-items:center;gap:11px;color:var(--ink);padding:0;text-align:left}.brand-mark{width:40px;height:40px;border-radius:12px;background:var(--blue);display:grid;place-items:center;color:white;font-size:25px;font-weight:750}.brand-name{font-size:18px;font-weight:750}.brand small{display:block;font-size:11px;color:var(--muted);margin-top:4px}
.main-nav{display:flex;align-items:center;gap:6px}.nav-button{padding:10px 17px;background:transparent;border:0;border-radius:10px;color:#74849b;font-size:14px;font-weight:600}.nav-button.active{background:var(--pale);color:var(--blue)}
.icon-button{border:1px solid transparent;background:transparent;color:#7a8ba2;border-radius:10px;width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;padding:8px;flex:none;touch-action:manipulation}.icon-button:hover{background:#f0f4fa}.icon-button.active{color:var(--blue);background:var(--pale)}.icon-button.pen-active{color:#d53b50;background:#fff0f2;border-color:#f5d1d8}.icon-button.marked{color:#d8a129}.icon-button.marked svg{fill:#fff2c7}
.button{border:1px solid #dfe6f0;background:white;border-radius:11px;min-height:43px;padding:10px 17px;color:#536781;font-size:14px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:background-color 100ms ease,border-color 100ms ease}.button:hover{background:#f5f8fd}.button.primary{background:var(--blue);border-color:var(--blue);color:white}.button.primary:hover{background:#296fe4}.button.soft{background:var(--pale);border-color:transparent;color:var(--blue)}.button.danger{color:#bf4955}.button.small{font-size:12px;padding:7px 12px;min-height:35px}.button.wide{width:100%}.text-button{border:0;background:transparent;color:var(--blue);font-size:13px;font-weight:600;padding:8px 3px;display:inline-flex;align-items:center;gap:5px}.text-button svg{width:16px}
.page-title{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:24px 0 23px}.page-title h1{font-size:27px;font-weight:720;letter-spacing:-.5px;margin:0 0 7px}.page-title p{font-size:13px;color:var(--muted);margin:0;line-height:1.7}
.muted{color:var(--muted)}.subtle{font-size:12px;color:var(--muted);line-height:1.75}.panel{border:1px solid var(--line);border-radius:var(--radius);background:white;overflow:hidden}
.resume-row{display:flex;align-items:center;justify-content:space-between;gap:16px;border:1px solid #dce8ff;background:#f0f6ff;padding:16px 22px;border-radius:14px;margin-bottom:19px}.resume-row strong{font-size:14px;display:block;margin-bottom:5px}.resume-row p{font-size:12px;color:#7b8ea9;margin:0;line-height:1.6}
.home-note{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:0 2px;margin:0 0 14px;font-size:12px;color:var(--muted)}
.panel-title{display:flex;justify-content:space-between;align-items:center;padding:17px 23px;border-bottom:1px solid var(--line)}.panel-title h2{font-size:15px;margin:0;font-weight:680}.panel-title small{color:var(--muted);font-size:12px}
.subject-row{border-bottom:1px solid var(--line)}.subject-row:last-child{border-bottom:0}.subject-main{display:flex;align-items:center;gap:12px;padding:11px 20px;min-height:72px}
.subject-expand{border:0;background:none;padding:7px 0;text-align:left;display:flex;align-items:center;gap:14px;color:var(--ink);min-width:0;flex:1}
.subject-symbol{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:#f1f5fd;color:#5882c1;font-size:14px;font-weight:650;flex:none}
.subject-label{font-size:16px;font-weight:650;display:block;margin-bottom:4px}.subject-caption{font-size:11px;color:var(--muted);font-weight:400}.subject-count{color:#8797ae;font-size:12px;white-space:nowrap;margin-left:auto}.subject-chevron{width:18px;height:18px;color:#9eacc0;transition:transform 120ms}.subject-row.expanded .subject-chevron{transform:rotate(180deg)}
.subject-children{padding:0 24px 13px 72px;background:#fff}.type-group{border-top:1px solid #f0f3f7}.type-row,.tag-row{display:flex;align-items:center;gap:8px;padding:9px 0}.type-toggle{min-width:0;flex:1;text-align:left;background:none;border:0;padding:7px 0;color:#576c88;display:flex;align-items:center;gap:7px;font-size:13px}.type-toggle svg{width:14px;height:14px}.type-tags{padding:0 12px 7px 22px}.tag-row{font-size:12px;color:#71839a}.tag-row span{flex:1}
.home-footer{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:19px 2px;font-size:12px;color:var(--muted)}.home-footer-links{display:flex;gap:20px}
.section-page{max-width:860px;margin:0 auto}.backlink{border:0;background:none;color:#71849e;display:flex;align-items:center;gap:7px;font-size:13px;padding:12px 0 0}.backlink svg{width:17px;height:17px}
.setup-card{padding:25px 28px}.field{margin-bottom:24px}.field-label{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:14px;font-weight:650;margin:0 0 12px}.field-label small{color:var(--muted);font-size:11px;font-weight:400}
.choice-set{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:9px}.choice-set.three{grid-template-columns:repeat(3,minmax(0,1fr))}.choice-set.six{grid-template-columns:repeat(3,minmax(0,1fr))}
.choice{border:1px solid transparent;background:#f4f6fa;color:#74839a;border-radius:10px;min-height:43px;padding:9px 10px;font-size:13px;font-weight:600;text-align:center}.choice.active{border-color:#75a6ff;background:#eef4ff;color:var(--blue)}.choice small{font-size:11px;font-weight:400;display:block;margin-top:4px}
.select,input[type=number],input[type=text]{width:100%;border:1px solid #dfe6f0;background:white;padding:11px 12px;border-radius:10px;min-height:43px;color:#4c607b;font-size:13px}
.setup-two{display:grid;grid-template-columns:160px minmax(0,1fr);gap:16px}
.timed-summary{margin-top:24px;padding:20px 0;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:14px}.timed-summary strong{font-size:17px;display:block;margin-bottom:7px}.timed-summary p{color:var(--muted);font-size:12px;line-height:1.6;margin:0}.duration{font-size:31px;font-weight:720;color:var(--blue);font-variant-numeric:tabular-nums;white-space:nowrap}.duration small{font-size:11px;color:var(--muted);display:block;text-align:right;font-weight:400;margin-top:5px}
.timed-footnote{font-size:11px;color:#929eb0;line-height:1.8;margin-top:13px}
.dialog-host{position:fixed;inset:0;z-index:9000;display:grid;place-items:center;padding:16px}.dialog-scrim{position:absolute;inset:0;background:#142d5070}.dialog{position:relative;width:min(580px,100%);max-height:calc(100vh - 32px);max-height:calc(100dvh - 32px);background:white;border-radius:20px;display:flex;flex-direction:column;box-shadow:0 22px 70px #172d4829;overflow:hidden}
.dialog-head{flex:none;padding:23px 24px 19px;border-bottom:1px solid var(--line);display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.dialog-head h2{font-size:20px;margin:0 0 6px}.dialog-head p{font-size:12px;color:var(--muted);line-height:1.7;margin:0}.dialog-body{overflow-y:auto;overflow-x:hidden;overscroll-behavior:contain;min-height:0;padding:22px 24px;-webkit-overflow-scrolling:touch}.dialog-footer{flex:none;display:flex;justify-content:flex-end;gap:10px;padding:16px 24px max(16px,env(safe-area-inset-bottom));border-top:1px solid var(--line);background:#fff}.dialog-copy{font-size:14px;line-height:1.9;margin:0}
.dialog .field:last-child{margin-bottom:0}.checkline{display:flex;align-items:flex-start;gap:9px;font-size:12px;color:#7084a0;line-height:1.8;margin-top:13px}.checkline input{margin:4px 0 0;width:16px;height:16px;flex:none}
.range-labels{display:flex;justify-content:space-between;color:var(--blue);font-size:15px;font-weight:650;margin-bottom:12px}.range-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}.range-control{min-width:0}.range-control label{color:var(--muted);font-size:11px}.range-control input[type=range]{width:100%;accent-color:var(--blue);display:block;margin:10px 0;height:24px}.quantity{display:flex;align-items:center;gap:11px}.quantity input{width:80px;text-align:center;font-size:17px;font-weight:650}.quantity-hint{margin-top:13px;color:#7890ab;font-size:12px;line-height:1.8;min-height:22px}
.range-disabled{opacity:.45}.alert{border:1px solid #f0dfb2;background:#fffaf0;color:#9b7b3b;border-radius:10px;font-size:12px;padding:11px 14px;line-height:1.7}.empty{padding:42px 24px;text-align:center;color:var(--muted);font-size:14px;line-height:1.8}
#toast{position:fixed;bottom:max(28px,env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);background:#213b5d;color:white;border-radius:12px;padding:12px 20px;font-size:13px;line-height:1.6;max-width:calc(100% - 32px);box-shadow:0 10px 25px #13284020;z-index:10000;pointer-events:none}
.record-row{padding:19px 22px;display:flex;justify-content:space-between;align-items:center;gap:14px;border-bottom:1px solid var(--line)}.record-row:last-child{border:0}.record-row strong{display:block;font-size:14px;margin-bottom:7px}.record-row p{font-size:12px;color:var(--muted);margin:0}.record-score{font-size:21px;color:var(--blue);font-weight:700;white-space:nowrap}
.bank-summary{padding:23px;display:flex;justify-content:space-between;align-items:center;gap:15px}.bank-summary h2{font-size:18px;margin-bottom:7px}.bank-summary p{font-size:12px;color:var(--muted);margin:0;line-height:1.7}.paper-row{padding:20px 23px;border-top:1px solid var(--line)}.paper-row h3{font-size:14px;line-height:1.7;margin:0 0 8px}.paper-row p{font-size:12px;color:var(--muted);margin:0 0 6px;line-height:1.8}.chip{display:inline-block;font-size:11px;padding:3px 8px;border-radius:5px;background:#f0f4fa;color:#778ba8;font-weight:500}.setting-row{padding:21px 23px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:18px}.setting-row:last-child{border-bottom:0}.setting-row strong{font-size:14px;display:block;margin-bottom:6px}.setting-row p{margin:0;font-size:12px;color:var(--muted);line-height:1.8}.setting-row input[type=checkbox]{width:20px;height:20px}.setting-actions{display:flex;gap:9px;flex-wrap:wrap}
.exam-shell{position:fixed;inset:0;z-index:100;background:var(--bg);display:flex;flex-direction:column;overflow:hidden;min-width:0}
.exam-head{flex:none;height:72px;display:flex;align-items:center;justify-content:space-between;gap:12px;background:#fff;border-bottom:1px solid var(--line);padding:0 25px;z-index:3}
.exam-head-left,.exam-head-right{display:flex;align-items:center;gap:10px;min-width:0}.exam-clock{font-size:16px;font-weight:720;font-variant-numeric:tabular-nums;min-width:60px;color:#5c708f}.exam-clock.urgent{color:var(--red)}
.exam-heading{min-width:0;text-align:center}.exam-heading strong{font-size:16px;display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:520px}.exam-heading small{display:block;font-size:11px;color:var(--muted);margin-top:5px}.exam-progress{font-size:13px;color:#6c8dbb;background:var(--pale);padding:7px 10px;border-radius:30px;font-weight:650;white-space:nowrap}
.exam-scroll{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;overscroll-behavior-y:contain;overscroll-behavior-x:none;-webkit-overflow-scrolling:touch;scrollbar-gutter:stable;padding:23px 20px 55px}
.question-stack{max-width:950px;margin:0 auto;min-width:0}.module-heading{margin:16px 1px 14px;font-size:15px;display:flex;align-items:center;gap:10px;font-weight:650}.module-heading:before{content:'';height:17px;width:3px;border-radius:3px;background:var(--blue)}.module-heading small{font-size:11px;color:var(--muted);font-weight:400}
.qpaper{background:white;border:1px solid var(--line);border-radius:16px;margin-bottom:18px;min-width:0;overflow:hidden;scroll-margin-top:16px}.qhead{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 23px;border-bottom:1px solid #eef2f7;min-height:67px}.qhead-left{display:flex;align-items:center;gap:11px;min-width:0}.qnum{font-size:23px;font-weight:750}.qkind{background:#f0f5fd;color:#7991b0;font-size:11px;padding:5px 9px;border-radius:20px;line-height:1.5}.qactions{display:flex;align-items:center;gap:3px;flex:none}.qtime{font-variant-numeric:tabular-nums;font-size:11px;color:#8b9bb1;margin-left:8px;min-width:63px;text-align:right}
.qmain{position:relative;isolation:isolate;min-width:0}.qcontent{padding:23px 26px 27px;position:relative;z-index:1}.qstem{font-size:18px;line-height:2;letter-spacing:.08px;margin-bottom:25px;overflow-wrap:anywhere;color:#263b5a}
.rich{font-size:17px;line-height:2;color:#2b3e57;overflow-wrap:anywhere}.rich p{margin:0 0 18px}.rich p:last-child{margin-bottom:0}.rich table{table-layout:fixed;border-collapse:collapse;width:100%;max-width:100%;font-size:14px;margin:17px 0}.rich th,.rich td{border:1px solid #d8e1ef;padding:9px 6px;text-align:center;word-break:break-word}.rich th{background:#f2f6fc;font-weight:600}.rich img{max-width:100%;height:auto}.rich .content-image{display:block;margin:14px auto;object-fit:contain}.rich .formula{display:inline-block;vertical-align:middle;max-height:45px;max-width:100%;object-fit:contain}.rich ul,.rich ol{padding-left:24px}
.option-row{position:relative;margin:11px 0;min-width:0}.option-button{display:flex;align-items:center;gap:13px;background:white;border:1px solid #e2e9f3;min-height:59px;width:100%;border-radius:12px;padding:12px 53px 12px 14px;text-align:left;color:#2b3e57;line-height:1.75;font-size:16px;transition:background-color 80ms,border-color 80ms;overflow:hidden}
.option-letter{width:30px;height:30px;border-radius:50%;border:1px solid #dce4f0;display:inline-flex;align-items:center;justify-content:center;flex:none;color:#899cb6;font-weight:650;font-size:14px}.option-body{min-width:0;overflow-wrap:anywhere;flex:1}.option-body p{margin:0}.option-row.selected .option-button{border-color:#86b2ff;background:#f0f6ff}.option-row.selected .option-letter{background:var(--blue);border-color:var(--blue);color:white}.option-row.excluded .option-body{text-decoration:line-through;color:#a5afbd}.option-row.excluded .option-button{background:#f8f9fb}.exclude-button{position:absolute;right:8px;top:50%;transform:translateY(-50%);width:34px;height:34px;z-index:2}.exclude-button svg{width:16px;height:16px}
.option-row.correct .option-button{background:#eef9f5;border-color:#9edcc5}.option-row.correct .option-letter{color:white;background:var(--green);border-color:var(--green)}.option-row.incorrect .option-button{background:#fff2f3;border-color:#efb1b8}.option-row.incorrect .option-letter{background:var(--red);color:white;border-color:var(--red)}
.qfoot{padding:11px 24px;border-top:1px solid #eef2f7;font-size:11px;line-height:1.7;color:#8e9eb3;display:flex;justify-content:space-between;gap:12px;background:#fcfdff}
.material-preview{background:#fff;border:1px solid var(--line);border-radius:15px;padding:17px 21px 19px;margin:0 0 13px;min-width:0}.material-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:13px}.material-head strong{font-size:14px}.material-head small{color:var(--muted);display:block;font-size:11px;margin-top:5px}
.material-scroll{max-height:290px;overflow-x:hidden;overflow-y:auto;overscroll-behavior-y:contain;-webkit-overflow-scrolling:touch;background:#f7f9fc;border-radius:11px;scrollbar-gutter:stable}
.material-content{position:relative;min-width:0;padding:18px 20px;isolation:isolate}.ink-base,.ink-live{position:absolute;inset:0;width:100%;height:100%;z-index:5;pointer-events:none;visibility:hidden}.ink-live{z-index:6;touch-action:none;cursor:crosshair;user-select:none;-webkit-user-select:none}.qtools{display:flex;align-items:center;gap:2px;border-radius:10px;background:#f8faff;border:1px solid var(--line);padding:3px}.qtools .icon-button{width:30px;height:30px;padding:6px}.pen-toolbar{display:flex;align-items:center;gap:4px}
.exam-end{text-align:center;padding:29px;background:#fff;border:1px solid var(--line);border-radius:15px;color:var(--muted);font-size:13px;line-height:1.8}.exam-end .button{margin-top:7px}
.split-shell{position:absolute;inset:72px 0 0;z-index:5;background:white;display:flex;flex-direction:column;overflow:hidden}.split-top{height:47px;display:flex;align-items:center;justify-content:space-between;padding:0 21px;flex:none;background:#fbfcfe;border-bottom:1px solid var(--line);font-size:12px;color:#8b9bb1}
.split-main{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);flex:1;min-height:0;min-width:0;width:100%}
.split-pane{min-width:0;min-height:0;overflow:hidden;display:flex;flex-direction:column}.split-pane+.split-pane{border-left:1px solid #dde5f1}.split-pane-title{height:48px;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:0 23px;border-bottom:1px solid var(--line);font-size:14px;font-weight:650;color:#506681;flex:none}.split-pane-title small{font-size:11px;font-weight:400;color:#94a1b4}
.split-scroll{flex:1;min-width:0;min-height:0;overflow-y:auto;overflow-x:hidden;overscroll-behavior-y:contain;overscroll-behavior-x:none;-webkit-overflow-scrolling:touch;scrollbar-gutter:stable}
.split-material-content{position:relative;padding:23px 25px 65px;isolation:isolate;min-height:100%;min-width:0;overflow-wrap:anywhere}
.split-questions{padding:10px 18px 60px;min-width:0}.split-questions .qpaper{border:0;border-bottom:1px solid var(--line);border-radius:0;margin-bottom:15px}.split-questions .qhead{padding:14px 3px;border-bottom:0;gap:6px;flex-wrap:wrap}.split-questions .qactions{margin-left:auto}.split-questions .qnum{font-size:19px}.split-questions .qcontent{padding:13px 2px 21px}.split-questions .qstem{font-size:17px;line-height:1.95;margin-bottom:23px}.split-questions .qfoot{padding:8px 0;background:white}.split-questions .option-button{font-size:15px;border-color:transparent;padding-left:6px;padding-right:41px;border-radius:10px}.split-questions .option-row.selected .option-button{border-color:#93baff}.split-questions .qkind{max-width:180px}.split-questions .qtime{min-width:0}
.asset-warning{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;border:1px dashed #dcb17a;border-radius:8px;padding:15px;font-size:13px;color:#9e774a;background:#fffaf3;margin:12px 0;line-height:1.7}
.pause-overlay{position:absolute;inset:0;z-index:30;background:#f4f7fd;display:grid;place-items:center;padding:20px}.pause-card{background:white;border:1px solid var(--line);border-radius:23px;width:min(390px,100%);padding:40px;text-align:center}.pause-card .pause-symbol{display:grid;place-items:center;color:var(--blue);background:var(--pale);width:64px;height:64px;margin:0 auto 23px;border-radius:19px}.pause-card svg{width:27px;height:27px}.pause-card h2{font-size:26px;margin-bottom:9px}.pause-card p{color:var(--muted);font-size:13px;line-height:1.8;margin-bottom:27px}
.answer-drawer{position:absolute;left:0;right:0;bottom:0;z-index:40;background:#fff;border-top:1px solid var(--line);border-radius:20px 20px 0 0;box-shadow:0 -16px 55px #183c5920;max-height:65%;display:flex;flex-direction:column}.answer-head{padding:14px 22px;display:flex;justify-content:space-between;align-items:center;gap:13px;flex:none;border-bottom:1px solid var(--line)}.answer-head strong{font-size:15px}.answer-head small{font-size:11px;color:var(--muted);margin-left:12px}.answer-body{overflow-y:auto;min-height:0;padding:18px 25px 24px}.answer-group{margin-bottom:23px}.answer-group h3{font-size:13px;color:#8192a8;margin-bottom:12px;font-weight:500}.answer-cells{display:grid;grid-template-columns:repeat(auto-fill,minmax(44px,1fr));gap:12px;max-width:850px}.answer-cell{position:relative;aspect-ratio:1;min-height:38px;max-width:47px;border-radius:50%;background:#f1f4f9;border:1px solid transparent;color:#8493a8;font-size:13px;font-weight:600;display:grid;place-items:center}.answer-cell.answered{background:#e9f1ff;color:var(--blue)}.answer-cell.correct{background:var(--green);color:white}.answer-cell.incorrect{background:var(--red);color:white}.answer-cell.current{outline:2px solid #78a8ff;outline-offset:3px}.answer-cell.marked:after{content:'★';position:absolute;bottom:-5px;color:#ebb43d;font-size:13px;line-height:1;background:white;border-radius:50%}
.report-main{max-width:880px;margin:0 auto}.score-panel{padding:31px;text-align:center}.score-caption{color:var(--muted);font-size:12px}.score-value{font-size:52px;font-weight:720;color:var(--ink);margin:9px 0 10px;letter-spacing:-1px}.score-value small{font-size:20px;color:#98a6b8;font-weight:400;margin-left:7px}.report-meta{font-size:12px;color:#8b9bb0;margin-bottom:0}.score-stats{display:grid;grid-template-columns:repeat(4,1fr);margin-top:27px;border-top:1px solid var(--line);padding-top:20px}.score-stat strong{display:block;font-size:19px;font-variant-numeric:tabular-nums;margin-bottom:7px}.score-stat span{font-size:11px;color:var(--muted)}.score-stat+.score-stat{border-left:1px solid var(--line)}
.report-panel{margin-top:18px;padding:21px 24px}.report-panel h2{font-size:16px;margin-bottom:15px}.module-detail{border-bottom:1px solid var(--line);padding:14px 0}.module-detail:last-child{border-bottom:0}.module-detail summary{cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:14px;font-weight:600;list-style:none}.module-detail summary:after{content:'⌄';color:#92a3bb}.module-detail summary p{margin:5px 0 0;font-size:11px;line-height:1.8;color:var(--muted);font-weight:400}.module-child{font-size:12px;color:#7c8fa9;padding:12px 15px 0;line-height:1.8;display:flex;justify-content:space-between}
.report-actions{display:flex;gap:12px;margin:20px 0}.report-actions .button{flex:1}.review-shell{position:fixed;inset:0;z-index:120;background:var(--bg);display:flex;flex-direction:column}.review-scroll{flex:1;overflow-y:auto;overflow-x:hidden;padding:23px 20px 38px;min-height:0;-webkit-overflow-scrolling:touch}.review-content{max-width:930px;margin:0 auto}.review-foot{flex:none;display:flex;align-items:center;justify-content:space-between;gap:12px;background:white;border-top:1px solid var(--line);padding:12px 23px max(12px,env(safe-area-inset-bottom))}
.review-stats{padding:17px 23px;border-top:1px solid var(--line);background:#f7f9fc;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;font-size:11px;color:#8a9cb4}.review-stats strong{display:block;font-size:15px;color:#4a6487;margin-top:6px}.explanation{padding:25px 27px;border-top:1px solid var(--line)}.explanation h3{font-size:15px;margin-bottom:18px}.explanation .rich{font-size:16px}.review-source{font-size:11px;color:#91a2b9;line-height:1.8;margin-top:22px}
.review-material{margin:0 0 17px}.review-material summary{cursor:pointer;font-size:14px;color:#6b86ac;padding:14px 20px}.review-material .rich{padding:7px 20px 22px}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media(max-width:760px){.app-shell{padding:0 18px 25px}.app-header{height:74px}.brand small{display:none}.main-nav{gap:1px}.nav-button{padding:9px 11px;font-size:12px}.brand-name{font-size:16px}.page-title{margin:19px 0}.page-title h1{font-size:24px}.subject-main{padding:9px 16px}.subject-label{font-size:15px}.subject-children{padding-left:55px;padding-right:18px}.setup-card{padding:22px}.exam-head{height:66px;padding:0 12px;gap:7px}.exam-heading strong{max-width:290px;font-size:14px}.exam-heading small{display:none}.exam-head-left,.exam-head-right{gap:4px}.exam-clock{font-size:14px;min-width:51px}.exam-head .button{padding:9px 12px;font-size:12px;min-height:38px}.exam-progress{font-size:11px;padding:6px 8px}.split-shell{top:66px}.exam-scroll{padding:16px 12px 40px}.qhead{padding:13px 17px}.qcontent{padding:18px 19px 25px}.qstem{font-size:17px}.option-button{font-size:15px}.qtime{font-size:10px}.split-pane-title{padding:0 12px;font-size:12px}.split-material-content{padding:17px 15px 50px}.split-material-content .rich{font-size:15px}.split-questions{padding:8px 10px 40px}.split-questions .qstem{font-size:15px}.split-questions .qkind{font-size:10px}.split-questions .option-button{font-size:14px;gap:8px}.split-questions .qhead{gap:5px}.split-questions .qtime{display:none}.split-questions .qactions{gap:0}.split-questions .icon-button{width:31px;height:31px;padding:6px}.rich table{font-size:12px}.rich td,.rich th{padding:7px 4px}.pen-toolbar .icon-button{width:30px;height:30px;padding:6px}.review-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.report-panel{padding:19px}.score-panel{padding:26px 20px}.report-actions{gap:8px}}
@media(max-width:460px){.app-shell{padding:0 13px 23px}.brand-mark{width:33px;height:33px;font-size:21px;border-radius:10px}.brand-name{font-size:14px}.brand{gap:8px}.nav-button{padding:9px;font-size:12px}.main-nav .icon-button{width:31px}.page-title h1{font-size:23px}.page-title .button{padding:9px 12px;font-size:12px}.page-title p{font-size:12px}.home-note{align-items:flex-start;line-height:1.7}.panel-title{padding:14px 16px}.subject-caption{font-size:10px}.subject-count{font-size:10px}.subject-main{gap:8px}.subject-symbol{width:32px;height:32px;font-size:12px}.subject-expand{gap:10px}.subject-label{font-size:14px}.subject-main .button.small{padding:6px 9px}.subject-children{padding-left:28px}.home-footer{align-items:flex-start;gap:8px;flex-direction:column;font-size:11px}.home-footer-links{gap:15px}.setup-two{grid-template-columns:1fr;gap:0}.setup-card{padding:19px 17px}.choice-set{gap:6px}.choice{font-size:12px;padding:9px 6px}.dialog-host{padding:10px}.dialog{max-height:calc(100dvh - 20px);border-radius:17px}.dialog-head{padding:19px 18px 16px}.dialog-body{padding:18px}.dialog-footer{padding:14px 18px max(14px,env(safe-area-inset-bottom))}.dialog-head h2{font-size:18px}.field-label{font-size:13px}.exam-heading strong{max-width:120px;font-size:12px}.exam-progress{display:none}.exam-head{padding:0 6px;gap:4px}.exam-head-left,.exam-head-right{gap:0}.exam-head .icon-button{width:32px;height:34px;padding:7px}.exam-clock{font-size:12px;min-width:46px}.exam-head .button{min-height:34px;padding:7px 11px}.exam-scroll{padding:12px 8px 35px}.qhead{padding:10px 13px;flex-wrap:wrap;gap:6px}.qnum{font-size:20px}.qactions{margin-left:auto}.qtime{min-width:58px;margin-left:3px}.qcontent{padding:16px 14px 20px}.qstem{font-size:16px;line-height:1.95}.option-button{font-size:14px;min-height:55px}.material-preview{padding:15px 14px}.material-content{padding:15px 14px}.material-content .rich{font-size:15px}.material-scroll{max-height:240px}.split-top{padding:0 10px;font-size:10px}.split-pane-title{padding:0 9px;font-size:11px}.split-pane-title small{display:none}.split-material-content{padding:13px 9px 40px}.split-material-content .rich{font-size:13px;line-height:1.95}.split-questions{padding:5px 6px 35px}.split-questions .qstem{font-size:13px}.split-questions .option-button{font-size:12px;gap:6px;padding-right:27px}.split-questions .option-letter{width:24px;height:24px;font-size:11px}.split-questions .exclude-button{right:0;width:26px}.split-questions .qkind{display:none}.split-questions .qactions{margin-left:0}.pen-toolbar{gap:1px}.pen-toolbar .icon-button{width:24px;height:28px;padding:5px}.score-stats{gap:5px}.score-stat strong{font-size:16px}.score-stat span{font-size:10px}.module-detail summary{font-size:13px}.module-child{font-size:11px;gap:10px}.review-foot{padding:10px 12px max(10px,env(safe-area-inset-bottom))}.review-foot .button{padding:8px 12px;min-height:38px;font-size:12px}.explanation{padding:19px}.explanation .rich{font-size:15px}}

.qhead{flex-wrap:wrap}.qtools-slot:empty{display:none}.qtools-slot:not(:empty){flex-basis:100%;display:flex;justify-content:flex-end}.option-button:disabled{opacity:1;cursor:default}