.mc-root{--mc-ink:#173c37;--mc-green:#16776c;--mc-wash:#edf5f0;--mc-line:#d7e5df;--mc-muted:#61746f;--mc-amber:#c48b20;box-sizing:border-box;max-width:1180px;margin:auto;padding:24px 24px 60px;color:var(--mc-ink);font:15px/1.7 system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;overflow-wrap:anywhere}
.mc-root *,.mc-root *::before,.mc-root *::after{box-sizing:border-box}.mc-root h1,.mc-root h2,.mc-root h3,.mc-root h4,.mc-root p{margin:0}.mc-root h1{font-size:22px;line-height:1.4}.mc-root h2{font-size:25px;line-height:1.4}.mc-root h3{font-size:18px;line-height:1.55}.mc-root button,.mc-root select{font:inherit}.mc-root button{cursor:pointer}.mc-root button:disabled{cursor:default}.mc-root a{color:var(--mc-green);text-decoration:underline;text-underline-offset:3px}.mc-root :focus-visible{outline:3px solid var(--mc-amber);outline-offset:3px}.mc-root [tabindex="-1"]:focus{outline:none}.mc-header{display:flex;align-items:center;justify-content:space-between;gap:16px;border-bottom:1px solid var(--mc-line);padding-bottom:18px}.mc-kicker{font-size:12px;font-weight:700;color:var(--mc-green);letter-spacing:.08em;margin-bottom:7px!important}.mc-tag{font-size:12px;padding:5px 10px;background:var(--mc-wash);border-radius:5px;white-space:nowrap}.mc-status{min-height:35px;padding:7px 0;font-size:12px;color:var(--mc-muted)}.mc-button{min-height:42px;padding:8px 15px;background:#fff;color:var(--mc-green);border:1px solid #a7c7b8;border-radius:7px;line-height:1.5;white-space:normal;font-size:14px!important;font-weight:600}.mc-button:hover:not(:disabled){background:var(--mc-wash)}.mc-button:disabled{opacity:.5}.mc-primary{background:var(--mc-green);border-color:var(--mc-green);color:#fff}.mc-primary:hover:not(:disabled){background:#105d54}.mc-error{padding:13px;margin-bottom:16px;background:#fff0e9;color:#923d29;border:1px solid #efc6b6;border-radius:8px}.mc-error .mc-button{margin:8px}.mc-intro{padding:20px 0 30px}.mc-intro h2{font-size:clamp(26px,3vw,34px);letter-spacing:-.03em;margin-bottom:10px}.mc-intro>p,.mc-lead{color:var(--mc-muted)}.mc-flow{display:flex;flex-wrap:wrap;list-style:none;counter-reset:step;margin:22px 0 0;padding:0;gap:12px}.mc-flow li{counter-increment:step;display:flex;align-items:center;gap:10px;font-weight:600}.mc-flow li:before{content:counter(step);border:1px solid #abcfc0;background:var(--mc-wash);border-radius:50%;width:27px;height:27px;display:grid;place-items:center;font-size:12px}.mc-flow li+li:after{content:none}.mc-flow li:not(:last-child){padding-right:16px;border-right:1px solid var(--mc-line)}.mc-home-grid{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:28px}.mc-section-heading{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:15px}.mc-section-heading h2{font-size:20px}.mc-section-heading>span,.mc-caption{font-size:12px;color:var(--mc-muted)}.mc-lessons{border-top:1px solid var(--mc-line)}.mc-lesson-row{display:grid;grid-template-columns:32px minmax(0,1fr) auto;align-items:center;gap:15px;padding:23px 0;border-bottom:1px solid var(--mc-line)}.mc-lesson-row p{font-size:14px;color:var(--mc-muted);margin:5px 0}.mc-number{color:var(--mc-green);font:600 20px/1.2 Georgia,serif;align-self:start;margin-top:5px}.mc-panel{border:1px solid var(--mc-line);background:#fff;border-radius:10px;padding:22px;margin-bottom:20px}.mc-panel h2{font-size:21px;margin-bottom:10px}.mc-panel p{font-size:14px;margin-bottom:12px}.mc-panel .mc-caption{font-size:12px}.mc-panel .mc-button{width:100%;margin-top:8px}.mc-count{display:inline-block;font:500 17px/1.5 system-ui;background:var(--mc-wash);border-radius:20px;min-width:29px;text-align:center;margin-left:4px}.mc-method-note{margin-top:30px;padding:22px;background:var(--mc-wash);border-radius:9px;font-size:14px}.mc-method-note p{margin-top:6px}.mc-root details{margin-top:16px}.mc-root summary{cursor:pointer;color:var(--mc-green);font-size:14px;font-weight:600}.mc-root details p{margin-top:12px}.mc-resume{padding:16px 20px;background:#f7f9e9;border:1px solid #dce5b7;border-radius:8px;margin-bottom:24px}.mc-resume>div{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:10px}.mc-recent{margin-top:30px}.mc-recent h2{font-size:20px;margin-bottom:10px}.mc-recent>div{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 0;border-bottom:1px solid var(--mc-line)}.mc-recent small{display:block;color:var(--mc-muted)}.mc-lesson{max-width:800px;margin:14px auto 0}.mc-lesson>h2{font-size:30px}.mc-lesson>section{margin-top:28px}.mc-lesson h3{margin-bottom:9px}.mc-lead{margin-top:12px!important}.mc-example{padding:24px;border-left:3px solid var(--mc-green);background:#fff;border-radius:0 9px 9px 0}.mc-english{font-family:Georgia,"Times New Roman",serif;line-height:1.7!important;letter-spacing:0;font-weight:400!important;overflow-wrap:anywhere}.mc-example .mc-english{font-size:20px;margin:8px 0 17px}.mc-example details{border-top:1px solid var(--mc-line);padding-top:15px}.mc-lesson-actions{display:flex;flex-wrap:wrap;gap:12px;margin:25px 0 14px}.mc-session-heading{display:flex;align-items:start;justify-content:space-between;gap:20px;margin:15px 0 20px}.mc-session-heading h2{font-size:24px}.mc-session-heading .mc-caption{margin-top:7px;max-width:620px}.mc-timer{display:flex;align-items:center;gap:8px;white-space:nowrap;font-size:12px;font-variant-numeric:tabular-nums}.mc-question-nav{display:flex;flex-wrap:wrap;gap:8px;padding:0 0 18px;border-bottom:1px solid var(--mc-line);margin-bottom:20px}.mc-question-nav button{width:40px;height:36px;border:1px solid var(--mc-line);border-radius:6px;background:#fff;color:var(--mc-green);font-size:13px}.mc-question-nav .is-current{background:var(--mc-green);color:#fff;border-color:var(--mc-green)}.mc-question-nav button:disabled{opacity:.6}.mc-exercise{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(300px,1fr);align-items:start;gap:24px}.mc-passage{padding:20px;background:#fff;border:1px solid var(--mc-line);border-radius:10px;max-height:calc(100vh - 110px);overflow:auto;scroll-margin-top:20px}.mc-paragraph{display:grid;grid-template-columns:24px minmax(0,1fr);gap:10px;padding:20px 0;border-bottom:1px solid var(--mc-line)}.mc-paragraph:last-of-type{border-bottom:0}.mc-paragraph h4{font-size:18px;line-height:1.5;color:var(--mc-green);padding-top:17px}.mc-sentence{display:block;width:100%;text-align:left;background:transparent;color:var(--mc-ink);border:1px solid transparent;border-radius:5px;padding:7px 8px!important;line-height:1.7;margin-bottom:3px}.mc-sentence>[lang]{font:17px/1.7 Georgia,"Times New Roman",serif}.mc-sentence:hover:not(:disabled){background:#f2f7f4;border-color:var(--mc-line)}.mc-sentence.is-selected{background:#e2f1e9;border-color:#7cb89c}.mc-sentence.is-proof{border-left:4px solid var(--mc-amber)}.mc-sentence-number{font-size:10px;color:var(--mc-muted);display:block}.mc-question{min-width:0;scroll-margin-top:20px}.mc-question>h3{font-size:22px;background:var(--mc-wash);padding:18px;border-radius:8px}.mc-field{display:block;margin-top:22px}.mc-field>span{display:block;font-size:14px;font-weight:650;margin-bottom:8px}.mc-field select{width:100%;min-height:44px;padding:8px 10px;border:1px solid #a7c7b8;border-radius:6px;color:var(--mc-ink);background:#fff}.mc-field .mc-button{margin-top:10px}.mc-evidence-preview{max-height:180px;overflow:auto;border-left:3px solid #a7c7b8;margin-top:10px;padding-left:13px}.mc-evidence-preview p{font:14px/1.65 Georgia,serif;margin-bottom:8px}.mc-hint{margin:20px 0}.mc-hint p{font-size:13px;margin-top:10px;color:var(--mc-muted)}.mc-question>.mc-primary{width:100%;margin-top:18px}.mc-answer-actions{display:flex;justify-content:space-between;gap:10px;margin-top:20px}.mc-question>.mc-caption{margin-top:12px}.mc-feedback{background:#fff3e8;border-left:3px solid #c48b20;padding:18px;margin-top:20px;border-radius:0 7px 7px 0;font-size:14px}.mc-feedback.mc-good{background:var(--mc-wash);border-color:var(--mc-green)}.mc-feedback h3{font-size:16px}.mc-feedback ul{padding-left:20px;margin:10px 0}.mc-feedback .mc-english{font-size:15px}.mc-results{padding:22px;background:#fff;border:1px solid var(--mc-line);border-radius:10px;margin:15px 0 30px}.mc-results>p{margin-top:10px}.mc-score-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin:25px 0;gap:16px}.mc-score-grid>div{border-left:3px solid var(--mc-green);padding-left:15px}.mc-score-grid strong{display:block;font-size:28px;line-height:1.3;font-variant-numeric:tabular-nums}.mc-score-grid span{font-size:12px;color:var(--mc-muted)}.mc-result-details>h2{font-size:21px}.mc-result-details>article{padding:22px 0;border-bottom:1px solid var(--mc-line)}.mc-result-details .mc-feedback{margin-top:12px}.mc-mobile-tabs{display:none}
@media(max-width:1050px){.mc-home-grid{grid-template-columns:minmax(0,1fr)}.mc-aside{display:grid;grid-template-columns:1fr 1fr;gap:18px}.mc-exercise{gap:16px;grid-template-columns:minmax(0,1fr) minmax(280px,1fr)}.mc-session-heading{flex-direction:column;gap:10px}}
@media(max-width:720px){.mc-root{padding:18px 13px 40px}.mc-header h1{font-size:20px}.mc-tag{font-size:10px}.mc-lesson-row{grid-template-columns:26px minmax(0,1fr);gap:10px;padding:20px 0}.mc-lesson-row>.mc-button{grid-column:2;justify-self:start}.mc-aside{grid-template-columns:1fr}.mc-panel{margin-bottom:0}.mc-flow{gap:9px}.mc-flow li{font-size:13px;gap:6px}.mc-flow li:not(:last-child){padding-right:9px}.mc-flow li:before{width:23px;height:23px}.mc-lesson>h2{font-size:26px}.mc-example{padding:19px}.mc-example .mc-english{font-size:18px}.mc-lesson-actions .mc-button{flex:1}.mc-mobile-tabs{display:flex;gap:10px;margin-bottom:15px}.mc-mobile-tabs .mc-button{flex:1}.mc-exercise{display:block}.mc-exercise[data-mobile-pane="question"] .mc-passage{display:none}.mc-exercise[data-mobile-pane="passage"] .mc-question{display:none}.mc-passage{max-height:none;padding:14px;overflow:visible}.mc-paragraph{grid-template-columns:18px minmax(0,1fr);gap:4px}.mc-question>h3{font-size:21px}.mc-score-grid{gap:9px}.mc-score-grid>div{padding-left:9px}.mc-score-grid strong{font-size:24px}.mc-recent>div{align-items:start}.mc-recent .mc-button{min-width:115px}.mc-method-note{padding:18px}.mc-results{padding:18px}.mc-resume>div{font-size:13px}.mc-resume .mc-button{min-width:90px}.mc-question-nav{gap:6px}.mc-question-nav button{width:36px}}
@media(prefers-reduced-motion:reduce){.mc-root *{scroll-behavior:auto!important}}
.mc-number{white-space:nowrap;overflow-wrap:normal;font-variant-numeric:tabular-nums}
.mc-host-note{margin:0 auto;padding:12px 24px 0;max-width:1180px;font:13px/1.65 system-ui,"Microsoft YaHei",sans-serif;color:#61746f}
@media(max-width:720px){.mc-lesson-row{grid-template-columns:30px minmax(0,1fr)}}
.mf-stages{display:flex;gap:8px;margin:20px 0 24px;padding:0}.mf-stages button{flex:1;display:flex;align-items:center;gap:9px;border:1px solid var(--mc-line);background:#fff;color:var(--mc-muted);padding:12px;border-radius:7px;text-align:left;font-size:14px}.mf-stages button[aria-current="step"]{background:var(--mc-wash);border-color:var(--mc-green);color:var(--mc-green);font-weight:650}.mf-stages button>span{background:#fff;border:1px solid var(--mc-line);border-radius:50%;width:24px;height:24px;text-align:center;flex-shrink:0}.mf-preparation>p,.mf-review>p{margin-bottom:15px}.mf-clue-row,.mf-answer-row{padding:20px;border:1px solid var(--mc-line);background:#fff;border-radius:9px;margin:15px 0}.mf-question-title{display:flex;justify-content:space-between;gap:12px;align-items:center;font-size:13px;margin-bottom:10px}.mf-question-title>span{color:var(--mc-muted)}.mf-priority{border:0;color:var(--mc-muted);background:transparent;min-height:38px;font-size:12px!important;padding:6px 9px;border-radius:5px}.mf-priority.is-selected{background:#fff0c5;color:#695109}.mf-tokens{font:21px/2 Georgia,serif!important;margin-top:5px!important}.mf-tokens button{font:inherit;border:0;background:none;color:var(--mc-ink);padding:0 2px;margin:1px;border-radius:3px}.mf-tokens button:hover:not(:disabled){background:var(--mc-wash)}.mf-tokens button.is-selected{background:#fff0ac;box-shadow:inset 0 -2px #c48b20}.mf-scan-status{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:8px 0 18px;color:var(--mc-muted);font-size:13px}.mf-scan-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:22px;align-items:start}.mf-current-paragraph{padding:22px;border:1px solid var(--mc-line);background:#fff;border-radius:9px;position:sticky;top:15px}.mf-paragraph-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}.mf-paragraph-heading h3{font-size:27px}.mf-paragraph-heading>span{font-size:12px;color:var(--mc-green)}.mf-reading-sentence{padding:13px 12px;border-left:3px solid transparent;margin:8px 0}.mf-reading-sentence.is-priority{border-left-color:var(--mc-green);background:#f1f7f3}.mf-reading-sentence .mc-english{font-size:19px;margin-top:5px}.mc-root .mc-field input,.mc-root .mc-field textarea{display:block;width:100%;font:14px/1.65 system-ui,"Microsoft YaHei",sans-serif;color:var(--mc-ink);background:#fff;border:1px solid #a7c7b8;border-radius:6px;padding:10px;resize:vertical;min-height:44px}.mf-paragraph-actions{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 12px}.mf-paragraph-actions .mc-button{flex:1;padding:8px;font-size:12px!important}.mf-question-board>h3{margin-bottom:6px}.mf-board-question{padding:18px;background:#fff;border:1px solid var(--mc-line);border-radius:8px;margin:14px 0}.mf-board-question.is-matched{border-color:var(--mc-green);background:#f5faf7}.mf-board-question .mc-english,.mf-answer-row .mc-english{font-size:19px}.mf-board-question mark{background:#fff0ac;color:inherit}.mf-board-actions{display:flex;flex-wrap:wrap;gap:9px;margin-top:15px}.mf-board-actions .mc-button{font-size:12px!important;min-height:38px;padding:8px 12px}.mf-answer-row.needs-review{border-left:4px solid var(--mc-amber)}.mf-answer-row .mc-field{max-width:240px;margin:12px 0}.mf-skipped{background:var(--mc-wash);padding:15px;border-radius:8px;margin:18px 0}.mf-skipped>strong{display:block;margin-bottom:8px}.mf-skipped>.mc-button{margin:4px}.mf-result-main{display:flex;gap:20px;align-items:center;margin:25px 0}.mf-result-main strong{font-size:40px;color:var(--mc-green);line-height:1.3;white-space:nowrap}.mf-result-main>span{font-size:14px;color:var(--mc-muted)}.mf-review-notes{display:grid;grid-template-columns:1fr 1fr;gap:12px}.mf-review-notes .mc-field{margin-top:14px}.mf-review-notes .mc-field:last-child{grid-column:1/-1}.mf-stages button:disabled{opacity:.6}.mf-tokens button:disabled{opacity:1}
@media(max-width:850px){.mf-scan-grid{grid-template-columns:1fr}.mf-current-paragraph{position:static}.mf-stages button{flex-direction:column;align-items:start;font-size:12px;padding:10px}.mf-tokens{font-size:19px!important}.mf-clue-row,.mf-answer-row{padding:16px}.mf-priority{white-space:nowrap}.mf-scan-status{align-items:start}.mf-scan-status>.mc-button{font-size:12px!important;min-width:110px}.mf-current-paragraph{padding:16px}.mf-reading-sentence .mc-english{font-size:18px}.mf-review-notes{grid-template-columns:1fr}.mf-result-main{flex-direction:column;align-items:start;gap:8px}}
.mf-current-paragraph{max-height:calc(100dvh - 30px);overflow-y:auto;overscroll-behavior:contain}.mf-board-next{margin:18px 0}.mf-board-next .mc-button{width:100%}@media(max-width:850px){.mf-current-paragraph{max-height:none;overflow:visible;overscroll-behavior:auto}}