@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700&family=Noto+Serif+SC:wght@500;600;700&display=swap');

:root{--ink:#28263e;--muted:#787787;--primary:#5d4fc4;--violet:#ebe7fa;--paper:#f8f9fc;--line:#e8e8f0;--green:#397b69;--serif:'Noto Serif SC','Songti SC',SimSun,serif;--sans:'Noto Sans SC','Microsoft YaHei',sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:14px;line-height:1.8}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button,a,input,select,summary,textarea{outline-offset:4px}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #8b7cdc}button{cursor:pointer}button:disabled{cursor:default}button{border:0;background:none;color:inherit}p{margin:0 0 1em}.sidebar{width:246px;position:fixed;inset:0 auto 0 0;background:#fff;border-right:1px solid var(--line);padding:30px 20px;display:flex;flex-direction:column;z-index:30}.brand{display:flex;gap:12px;align-items:center;font-family:var(--serif);font-size:26px;font-weight:700;line-height:1.4;padding:0 8px}.brand-icon{display:grid;place-items:center;width:42px;height:46px;border-radius:11px 11px 3px 11px;background:var(--primary);color:white;font-size:24px}.brand small{display:block;font:8px/2 var(--sans);letter-spacing:1.1px;color:var(--muted);margin-top:4px}.nav-label{font-size:10px;color:#9392a0;margin:42px 12px 12px;letter-spacing:1.4px}.nav-link{display:flex;align-items:center;gap:12px;padding:10px 13px;margin:4px 0;border-radius:8px;font-size:13px;color:#6e6c80}.nav-link.active{background:#eeebfa;color:var(--primary);font-weight:600}.nav-icon{width:23px;font-family:Georgia,serif;text-align:center;font-size:16px}.nav-link small{margin-left:auto;font-size:10px;font-weight:400;color:#9994ae}.nav-divider{height:1px;background:var(--line);margin:18px 12px}.side-bottom{margin-top:auto;padding:25px 12px 0}.progress-caption{display:flex;justify-content:space-between;font-size:11px;color:#726d88}.progress-track{height:4px;background:#eeedf5;margin:12px 0;border-radius:9px;overflow:hidden}.progress-track>div{background:var(--primary);height:100%;transition:width .3s}.side-bottom p{font-size:10px;color:#92909f;margin-top:15px}.side-bottom>a{font-size:10px;color:#747080}.shell{margin-left:246px}.topbar{height:84px;display:flex;justify-content:space-between;align-items:center;padding:0 46px;background:rgba(255,255,255,.9);border-bottom:1px solid var(--line);gap:16px}.breadcrumb{font-size:12px;color:#827d92}.top-right{display:flex;gap:24px;align-items:center}#search-form{display:flex;align-items:center;border:1px solid var(--line);border-radius:7px;padding:6px 10px;gap:7px;background:#fafafd}#search-form>span{font:25px/1 Georgia;color:#8c88a0}#search{width:195px;border:0;outline:none;background:none;font-size:11px;color:var(--ink)}#search-form button{font-size:10px;color:var(--primary);padding:0 2px}.edition{font-size:10px;color:#77728b;white-space:nowrap;border:1px solid #dedbea;border-radius:5px;padding:3px 8px}main{max-width:1420px;margin:auto;padding:34px 46px 60px;min-height:calc(100vh - 150px)}.eyebrow{color:var(--primary);font-size:10px;letter-spacing:2px;font-weight:600;margin-bottom:15px}.page-heading{display:flex;align-items:end;justify-content:space-between;margin-bottom:24px;gap:20px}.page-heading h1{font-family:var(--serif);font-size:27px;font-weight:600;margin:0 0 7px;letter-spacing:1px}.page-heading p{font-size:12px;color:var(--muted);margin:0}.tiny-note{font-size:10px;color:var(--muted)}.hero{border:1px solid #e1dbf5;border-radius:16px;background:#eeebfa;display:grid;grid-template-columns:1.07fr 1fr;overflow:hidden;min-height:292px;position:relative}.hero-copy{padding:34px 36px}.hero h2{font-family:var(--serif);font-size:32px;line-height:1.6;font-weight:600;margin:0 0 14px;letter-spacing:1px}.hero h2 em{font-style:normal;color:var(--primary)}.hero-copy>p{color:#79718f;font-size:12px;max-width:360px;line-height:1.9}.actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:23px}.button{display:inline-flex;justify-content:center;align-items:center;gap:18px;padding:10px 18px;border-radius:6px;font-size:12px;background:var(--primary);color:white;font-weight:500;transition:background .15s}.button:hover{background:#493e9b}.button.secondary{background:white;color:var(--primary);border:1px solid #dfdbea}.text-link{font-size:12px;color:var(--primary)}.hero-art{display:flex;align-items:center;justify-content:center;padding:34px 34px 34px 10px;background:radial-gradient(ellipse at 60% 50%,#ded7f699,transparent 68%)}.annotation-sheet{position:relative;background:#fff;width:100%;max-width:385px;padding:23px 26px;border:1px solid #e0dbf0;border-radius:8px;box-shadow:0 12px 24px #6754a60b;transform:rotate(-2deg)}.sheet-label{font:9px/1.4 var(--sans);letter-spacing:2px;color:#9388aa;border-bottom:1px solid var(--line);padding-bottom:12px;display:flex;justify-content:space-between}.annotation-sheet>p{font:22px/1.7 Georgia,serif;margin:20px 0 8px;color:#49415c}.annotation-sheet mark{background:#eee8ff;color:#5c48a5;border-bottom:2px solid #ac9bdc;padding:0 3px}.annotation-note{font-size:10px;color:#8d7bb3;text-align:right}.evidence-chain{display:flex;gap:8px;align-items:center;margin-top:22px;font-size:10px;color:#8f899c}.evidence-chain span{background:#f6f5fa;padding:4px 10px;border-radius:4px}.evidence-chain span:last-child{background:#e7f2ed;color:#548173}.stats{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid var(--line);border-radius:10px;margin:20px 0 32px;padding:19px 0}.stat{padding:0 25px;border-right:1px solid var(--line);display:flex;align-items:center;gap:12px}.stat:last-child{border:0}.stat b{font:29px/1.2 Georgia,serif;letter-spacing:-1px;color:#49415e}.stat span{font-size:10px;color:#8e899d;line-height:1.8}.section-heading{display:flex;align-items:center;justify-content:space-between;margin:28px 0 17px;gap:15px}.section-heading h2{font-size:17px;margin:0;font-weight:600}.section-heading h2 small{font-size:10px;color:#a4a1b0;font-weight:400;margin-left:12px;letter-spacing:1px}.section-heading>a{font-size:11px;color:var(--muted)}.lesson-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.lesson-card{background:white;border:1px solid var(--line);border-radius:11px;padding:22px 23px;transition:transform .2s,border-color .2s;position:relative}.lesson-card:hover{transform:translateY(-3px);border-color:#c7bce7}.card-top{display:flex;align-items:center;justify-content:space-between}.subject-icon{width:38px;height:38px;display:grid;place-items:center;background:#eeebfa;border-radius:9px;font:21px Georgia,serif;color:#7361ba}.lesson-card:nth-child(2) .subject-icon{background:#eaf3ef;color:#538172}.lesson-card:nth-child(3) .subject-icon{background:#edf0f9;color:#667cb2}.lesson-card:nth-child(4) .subject-icon{background:#fbf0e7;color:#b28b65}.lesson-card:nth-child(5) .subject-icon{background:#f5eaf0;color:#ac7993}.lesson-card:nth-child(6) .subject-icon{background:#eaf1f7;color:#62829b}.score{font-size:10px;color:var(--muted)}.score b{font:21px Georgia,serif;color:#514966;padding-right:3px}.lesson-card h3{font-size:16px;margin:17px 0 5px}.lesson-card p{font-size:11px;line-height:1.9;color:var(--muted);min-height:42px;margin:0 0 15px}.tags{display:flex;gap:5px;flex-wrap:wrap}.tags span,.chip{font-size:9px;padding:2px 7px;border-radius:4px;background:#f6f5f9;color:#8b859a}.card-foot{border-top:1px solid #f0eff5;padding-top:13px;margin-top:18px;display:flex;justify-content:space-between;color:#a19aaa;font-size:10px}.card-foot>b{font-size:14px;color:var(--primary)}.bottom-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:21px;margin-top:7px}.panel{border:1px solid var(--line);background:#fff;border-radius:11px;padding:23px 25px}.example-row{display:flex;gap:15px;padding:15px 0;border-bottom:1px solid #f0eff5;align-items:center}.example-row:last-child{border:0;padding-bottom:0}.year{font:20px Georgia;color:#8c7bb5;min-width:48px}.example-row h3{margin:0 0 4px;font-size:12px;font-weight:500}.example-row p{font-size:10px;color:var(--muted);margin:0}.example-row>span:last-child{margin-left:auto;color:#a69cbb}.route-steps{list-style:none;margin:0;padding:0}.route-steps li{display:flex;gap:14px;margin:17px 0}.route-steps li>span{display:grid;place-items:center;flex-shrink:0;width:25px;height:25px;border-radius:50%;background:#f1eef9;color:#8b7aab;font:12px Georgia}.route-steps h3{font-size:12px;margin:0 0 4px}.route-steps p{font-size:10px;color:var(--muted);margin:0}.page-intro{max-width:790px;font-size:14px;color:#777184;line-height:2}.lesson-banner{display:flex;justify-content:space-between;gap:30px;align-items:center;background:#eeebfa;padding:27px 30px;border:1px solid #e1dbf5;border-radius:12px}.lesson-banner h1{font:600 29px var(--serif);margin:7px 0 12px}.lesson-banner p{font-size:12px;color:#81748e;margin:0;max-width:660px}.lesson-metrics{display:flex;gap:26px;flex-shrink:0}.lesson-metrics>div{display:flex;flex-direction:column;text-align:center;gap:5px}.lesson-metrics b{font:27px Georgia;color:#685393}.lesson-metrics span{font-size:10px;color:#9a8ca8}.tabs{display:flex;border-bottom:1px solid var(--line);gap:27px;margin:20px 0 25px;overflow-x:auto}.tab{font-size:12px;padding:15px 0;white-space:nowrap;border-bottom:2px solid transparent;color:#8c8799}.tab.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 245px;gap:25px;align-items:start}.article{background:white;padding:30px 34px;border:1px solid var(--line);border-radius:11px;font-size:14px;line-height:2.1}.article h2{font-family:var(--serif);font-size:21px;line-height:1.7;margin:0 0 15px}.article h3{font-size:16px;margin:25px 0 10px}.article h4{font-size:14px;margin:18px 0 5px}.article p{color:#666174;line-height:2.1}.article b{color:#4a405c;font-weight:600}.article details{border-top:1px solid var(--line);padding:20px 0}.article details:first-of-type{margin-top:25px}.article details:last-child{padding-bottom:0}.article summary{cursor:pointer;font-size:16px;font-weight:600;line-height:1.8}.article details>div{padding-top:15px}.article .english{font:18px/1.9 Georgia,serif;color:#504866;background:#f6f4fb;border-left:3px solid #c9bce6;padding:22px 25px;margin:18px 0}.article .note{font-size:12px;color:#97859d}.method-steps{display:grid;gap:20px;margin:25px 0}.method-step{display:flex;gap:17px}.method-step>span{font:15px/30px Georgia;color:#9582b9;width:30px;height:30px;flex-shrink:0;border-radius:50%;background:#f3f0fa;text-align:center}.method-step h3{margin:0 0 3px;font-size:14px}.method-step p{font-size:13px;margin:0}.aside-panel{padding:21px;background:#fff;border:1px solid var(--line);border-radius:10px;margin-bottom:18px}.aside-panel h3{font-size:13px;margin:0 0 15px}.aside-panel p,.aside-panel li{font-size:11px;color:#8c8196;line-height:1.9}.aside-panel ul{padding-left:16px;margin:0}.aside-panel li{margin-bottom:12px}.aside-panel .button{width:100%;padding:8px;font-size:11px;gap:8px}.aside-panel label{display:flex;align-items:flex-start;gap:7px;font-size:11px;color:#80718b;line-height:1.9;margin-bottom:12px}.aside-panel input{accent-color:var(--primary);margin-top:5px}.disclaimer{font-size:11px;color:#938a9d;line-height:1.9;margin:17px 0}.filters{display:flex;gap:10px;flex-wrap:wrap;margin:20px 0}.filters select{border:1px solid var(--line);border-radius:7px;background:#fff;padding:8px 13px;font-size:12px;color:#746a83}.case-card{background:#fff;border:1px solid var(--line);border-radius:11px;padding:27px 30px;margin-bottom:18px}.case-card h2{font:600 20px/1.6 var(--serif);margin:10px 0 15px}.case-meta{display:flex;gap:9px;align-items:center;font-size:10px;color:#9a8ba7}.case-meta>b{font:19px Georgia;color:#8d78ac}.case-prompt{color:#736879;font-size:13px;line-height:2;background:#f8f7fb;padding:16px 20px;border-radius:6px;margin-bottom:18px}.case-card details{border-top:1px solid var(--line);padding-top:15px}.case-card summary{font-size:12px;color:var(--primary);cursor:pointer;font-weight:500}.answer{background:#edf5f0;padding:14px 18px;border-radius:7px;font-size:13px;color:#4c7763;margin:18px 0;line-height:1.9}.trap{font-size:12px;color:#947a6b;background:#faf4ef;padding:14px 18px;border-radius:7px}.source-link{font-size:10px;color:#93819c;display:inline-block;margin-top:15px;text-decoration:underline;text-underline-offset:3px}.exercise h2{font-size:22px}.quiz-options{display:grid;gap:10px;margin:24px 0}.quiz-option{border:1px solid #e5e0ee;border-radius:8px;text-align:left;padding:14px 18px;display:flex;gap:15px;font-size:13px;background:#fff}.quiz-option:hover{background:#f8f6fd}.quiz-option>span{color:#9b8caf}.quiz-option.selected{border-color:var(--primary);background:#f2eefb}.quiz-option.correct{border-color:#699e85;background:#eef6f0}.quiz-option.wrong{border-color:#ca8b84;background:#fcf1ee}.practice-label{font-size:10px;letter-spacing:1px;color:#9b8bab;margin-bottom:15px}.note-input{width:100%;min-height:240px;border:1px solid #e4deec;border-radius:8px;padding:18px;background:#fbfaff;color:#66566f;resize:vertical;font-size:14px;line-height:2}.note-status{font-size:11px;color:#927ba5;min-height:20px}.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.review-card{padding:23px;background:#fff;border:1px solid var(--line);border-radius:10px}.review-card h2{font-size:15px;margin:0 0 10px}.review-card p{color:#8a7c97;font-size:12px}.review-card pre{font:12px/1.9 var(--sans);white-space:pre-wrap;overflow-wrap:anywhere;max-height:140px;overflow:auto;color:#877292}.empty{padding:50px 25px;background:#fff;border:1px dashed #ded5e8;border-radius:11px;text-align:center;color:#9a89a5}.timing{display:flex;height:35px;overflow:hidden;border-radius:6px;margin:20px 0}.timing span{display:grid;place-items:center;font-size:10px;min-width:0;overflow:hidden}.time-list{display:flex;gap:15px;flex-wrap:wrap;font-size:10px;color:#8e8198}.time-list i{display:inline-block;width:7px;height:7px;border-radius:2px;margin-right:5px}.source-item{margin:23px 0;padding-bottom:20px;border-bottom:1px solid var(--line)}.source-item a{font-size:13px;color:var(--primary);text-decoration:underline}.source-item p{font-size:12px;margin:8px 0 0}.search-result{display:block;padding:22px;background:white;border:1px solid var(--line);border-radius:8px;margin:12px 0}.search-result h2{font-size:16px;margin:0 0 7px}.search-result p{font-size:12px;color:var(--muted);margin:0}.skip{position:fixed;top:-60px;left:260px;background:var(--primary);color:#fff;padding:10px;z-index:100}.skip:focus{top:10px}footer{max-width:1420px;margin:auto;padding:20px 46px;border-top:1px solid var(--line);display:flex;justify-content:space-between;color:#a4a0ae;font-size:10px}.menu{display:none}#toast{position:fixed;bottom:28px;left:50%;transform:translate(-50%,15px);padding:10px 20px;background:#433754;color:white;border-radius:8px;opacity:0;transition:.2s;pointer-events:none;z-index:100;font-size:12px}#toast.show{opacity:1;transform:translate(-50%,0)}.complete-state{color:var(--green);font-size:11px}.print-button{font-size:11px;color:#9a89a5}.results-count{font-size:11px;color:var(--muted);margin-left:auto;align-self:center}

@media(min-width:1550px){main{padding-top:42px}.hero{min-height:325px}.hero-copy{padding:40px 45px}.hero h2{font-size:37px}.lesson-card{padding:26px}}@media(max-width:1150px){.sidebar{width:215px;padding:28px 14px}.shell{margin-left:215px}.topbar{padding:0 28px}main{padding:28px}.hero-copy{padding:26px}.hero h2{font-size:27px}.hero-art{padding-right:23px}.annotation-sheet{padding:20px}.annotation-sheet>p{font-size:20px}.lesson-card{padding:19px}.stat{padding:0 17px;gap:9px}.lesson-layout{grid-template-columns:minmax(0,1fr) 210px;gap:18px}.article{padding:25px}.lesson-metrics{gap:15px}.edition{display:none}}@media(max-width:900px){.hero{grid-template-columns:1fr}.hero-art{display:none}.hero-copy{padding:30px}.lesson-grid{grid-template-columns:repeat(2,1fr)}.bottom-grid{grid-template-columns:1fr}.lesson-layout{grid-template-columns:1fr}.lesson-aside{display:grid;grid-template-columns:1fr 1fr;gap:15px}.lesson-banner{align-items:start}.lesson-metrics{flex-direction:column;gap:10px}.lesson-metrics>div{flex-direction:row;align-items:center;gap:5px}.lesson-metrics b{font-size:21px}.stat{flex-direction:column;gap:5px;align-items:start}.stat span br{display:none}.review-grid{grid-template-columns:1fr}}@media(max-width:650px){.sidebar{transform:translateX(-100%);width:240px;transition:transform .2s;box-shadow:15px 0 40px #33214b18}.sidebar.open{transform:translateX(0)}.shell{margin:0}.menu{display:block;font-size:19px;color:var(--primary)}.topbar{height:64px;padding:0 17px;gap:9px;position:sticky;top:0;z-index:20}.breadcrumb{font-size:10px;white-space:nowrap}.top-right{gap:0;margin-left:auto}#search{width:116px;font-size:10px}#search-form{padding:5px 8px;gap:3px}#search-form>span{display:none}main{padding:24px 18px 40px}.page-heading h1{font-size:23px}.page-heading p{font-size:11px}.page-heading .tiny-note{display:none}.hero h2{font-size:28px}.hero-copy{padding:25px}.hero-copy>p{font-size:11px}.stats{padding:15px 0;margin-bottom:24px}.stat{padding:0 12px}.stat b{font-size:26px}.stat span{font-size:9px}.section-heading h2{font-size:16px}.section-heading h2 small{display:none}.lesson-grid{gap:10px}.lesson-card{padding:17px 14px}.lesson-card h3{font-size:15px}.lesson-card p{font-size:10px;min-height:55px}.lesson-card .tags span{font-size:8px;padding:2px 5px}.subject-icon{width:32px;height:32px}.score b{font-size:18px}.card-foot{font-size:9px}.panel{padding:20px}.lesson-banner{padding:22px}.lesson-banner h1{font-size:25px}.lesson-banner p{font-size:11px}.lesson-metrics{gap:13px}.lesson-metrics>div{flex-direction:column}.lesson-metrics span{white-space:nowrap;font-size:9px}.tabs{gap:22px;margin-top:10px}.tab{font-size:12px}.article{padding:23px 20px;font-size:13px}.article h2{font-size:20px}.article summary{font-size:15px}.article .english{padding:18px;font-size:17px}.method-step{gap:12px}.method-step p{font-size:12px}.lesson-aside{grid-template-columns:1fr}.case-card{padding:22px 20px}.case-card h2{font-size:19px}.case-prompt{padding:14px;font-size:12px}.case-meta{gap:6px;flex-wrap:wrap}.case-meta>b{font-size:18px}.case-card .method-step p{font-size:12px}.review-grid{grid-template-columns:1fr}.time-list{gap:8px}footer{padding:20px 18px;gap:15px;font-size:9px}.skip{left:10px}.filters{gap:7px}.filters select{font-size:11px;padding:8px}.results-count{width:100%;margin:0}.eyebrow{font-size:9px}.page-intro{font-size:12px}.article details>div p{font-size:13px}}

main:focus{outline:none}@media(max-width:650px){.sidebar{visibility:hidden}.sidebar.open{visibility:visible}}@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}@media print{.sidebar,.topbar,footer,.tabs,.lesson-aside,.actions,.print-button,#toast{display:none!important}.shell{margin:0}body,main{background:white}main{padding:0;max-width:none}.lesson-layout{display:block}.article,.case-card{border:0}.hero{display:none}details>div{display:block!important}.lesson-banner{background:white;border:0}.article{padding:15px 0}.case-card{break-inside:avoid}.source-link{color:#333}.english{break-inside:avoid}}



/* ===== 真题库 / 阅读精翻（追加样式） ===== */

.paper-strip{display:flex;flex-wrap:wrap;gap:7px;padding:20px 22px}

.year-chip{display:inline-flex;align-items:center;justify-content:center;min-width:57px;padding:7px 10px;border:1px solid var(--line);border-radius:7px;font:12px/1.2 var(--sans);color:#6e6c80;background:#fcfcfe;transition:border-color .15s,color .15s}

.year-chip:hover{border-color:#c9bff0;color:var(--primary)}

.year-chip.has-key{background:#f2f7f4;border-color:#d8e8df;color:#397b69}

.year-chip.has-read{background:#f4f2fd;border-color:#ddd6f5;color:var(--primary)}

.year-chip.has-key.has-read{background:linear-gradient(135deg,#f2f7f4 0 50%,#f4f2fd 50% 100%);border-color:#d5d5ec}

.strip-legend{display:flex;gap:16px;flex-wrap:wrap;margin:15px 0 0;font-size:11px;color:#8c8799}

.strip-legend span{display:inline-flex;align-items:center;gap:6px}

.paper-list{padding:6px 8px}

.paper-row{display:flex;align-items:center;gap:16px;padding:13px 14px;border-bottom:1px solid #f0eff5;border-radius:7px}

.paper-row:last-child{border-bottom:0}

.paper-row:hover{background:#faf9fe}

.paper-year{font:600 15px/1 Georgia,var(--serif);color:var(--primary);min-width:48px}

.paper-main{display:flex;flex-direction:column;gap:2px;min-width:0;flex:1}

.paper-main b{font-size:13px;font-weight:600}

.paper-meta{font-size:11px;color:#918c9f}

.paper-badges{display:flex;gap:6px;flex-shrink:0}

.badge{font-style:normal;font-size:9px;padding:3px 7px;border-radius:4px;letter-spacing:.3px}

.badge-key{background:#eaf4ee;color:#397b69}

.badge-read{background:#eeebfa;color:var(--primary)}

.paper-go{color:#c3bdd4;font-size:16px}

.paper-block{background:#fff;border:1px solid var(--line);border-radius:11px;padding:24px 27px;margin-bottom:18px}

.paper-block-head{display:flex;align-items:baseline;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-bottom:6px}

.paper-block h2{font:600 18px/1.5 var(--serif);margin:0 0 8px}

.paper-block-head h2{margin:0}

.pdf-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:14px}

.part-list{list-style:none;margin:6px 0 0;padding:0}

.part-list li{display:flex;align-items:center;gap:14px;padding:11px 0;border-bottom:1px solid #f0eff5}

.part-list li:last-child{border-bottom:0}

.part-label{flex:1;font-size:13px;min-width:0}

.part-meta{font-size:11px;color:#918c9f;white-space:nowrap}

.part-actions{display:flex;gap:12px;flex-shrink:0}

.fact-list{margin:0;padding-left:20px;font-size:12px;color:#777184;line-height:2}

.fact-list code{background:#f5f4f9;padding:1px 5px;border-radius:4px;font-size:11px}

.chip-row{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0 4px}

.chip-link{padding:7px 15px;border:1px solid var(--line);border-radius:20px;font-size:12px;color:#6e6c80;background:#fff}

.chip-link.active{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:500}

.reading-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:16px;margin-top:8px}

.reading-card{background:#fff;border:1px solid var(--line);border-radius:11px;padding:22px 24px;display:flex;flex-direction:column;gap:7px}

.reading-card:hover{border-color:#cfc7ee}

.reading-card h3{font:600 17px/1.5 var(--serif);margin:0}

.reading-card p{margin:0;font-size:12px;color:#7d7789;line-height:1.9}

.reading-card .card-foot{display:flex;justify-content:space-between;align-items:center;font-size:11px;color:#9a94a8;margin-top:8px;padding-top:12px;border-top:1px solid #f2f1f7}

.reading-article{font-size:14.5px;line-height:2.15}

.reading-article h4{font:600 15px/1.6 var(--serif);margin:26px 0 10px;padding-bottom:7px;border-bottom:1px solid #f0eff5;color:#4a4763}

.reading-article h4:first-child{margin-top:4px}

.reading-article ul{margin:0 0 14px;padding-left:19px}

.reading-article li{margin:4px 0}

.reading-article code{background:#f5f4f9;padding:1px 5px;border-radius:4px;font-size:12px;font-family:Consolas,Menlo,monospace;color:#57516e}

.reading-article mark{background:#fdf3c8;padding:0 2px;border-radius:2px}

.callout{border-left:3px solid var(--line);background:#fafafd;border-radius:0 7px 7px 0;padding:12px 17px;margin:13px 0}

.callout p{margin:0 0 6px}

.callout p:last-child,.callout ul:last-child{margin-bottom:0}

.callout-head{display:flex;align-items:center;gap:8px;font-size:11px;color:#8c8799;margin-bottom:5px!important}

.callout-kind{background:#eeecf6;color:#6e6c80;border-radius:4px;padding:1px 6px;font-size:10px}

.callout-quote{border-color:#cfc7ee;background:#faf9fe}

.callout-quote .callout-head{color:var(--primary)}

.callout-tip{border-color:#c9d9d0;background:#f7fbf9}

.callout-tip .callout-kind{background:#e6f1ea;color:#397b69}

.callout-info{border-color:#c6d5e2;background:#f7fafc}

.callout-info .callout-kind{background:#e6eef5;color:#456e8c}

.callout-warning{border-color:#e8d3b8;background:#fdf9f3}

.callout-warning .callout-kind{background:#f6ead8;color:#96703c}

.callout-success{border-color:#bcd9c8;background:#f4faf6}

.callout-success .callout-kind{background:#e2f1e8;color:#2f6b52}

.callout-failure{border-color:#eac9c9;background:#fdf6f6}

.callout-failure .callout-kind{background:#f7e5e5;color:#9a5050}

.callout-summary{border-color:#d4d0e6;background:#f8f7fc}

.callout-note{border-color:#dcd8ea;background:#faf9fe}

.callout-abstract{border-color:#cfc7ee;background:#f5f3fd}

.reading-nav{display:flex;justify-content:space-between;gap:14px;margin-top:22px}

.viewer-bar{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:14px}

.viewer-name{font:600 14px/1.5 var(--serif);color:#4a4763}

.viewer-actions{display:flex;align-items:center;gap:14px;margin-left:auto}

.pdf-frame{width:100%;height:calc(100vh - 190px);min-height:520px;border:1px solid var(--line);border-radius:10px;background:#fff}

.quote-line{color:#5f5a70;font-size:13px;line-height:2}

.search-result .chip{margin-right:7px}

@media(max-width:900px){.paper-row{flex-wrap:wrap}.paper-badges{order:3}.reading-grid{grid-template-columns:1fr}.pdf-frame{height:70vh}}

@media(max-width:650px){.paper-block{padding:19px 17px}.part-list li{flex-wrap:wrap;gap:6px}.part-actions{width:100%;justify-content:flex-end}.year-chip{min-width:50px;padding:6px 8px;font-size:11px}.paper-year{min-width:42px}.reading-card{padding:18px 17px}.reading-article{font-size:14px}.viewer-actions{margin-left:0;width:100%}}

@media print{.papers-grid,.year-chip,.pdf-frame,.viewer-bar,.chip-row{display:none!important}}



/* ===== 原题全文 / 真题原文 ===== */

.original{border:1px solid #ddd6f5;background:#fbfaff;border-radius:9px;padding:16px 19px;margin:0 0 16px}

.original-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:10px}

.original-tag{background:var(--primary);color:#fff;font-size:10px;padding:3px 8px;border-radius:4px}

.original-body p.stem{font-size:14px;line-height:2;color:#3f3b56;margin:0 0 8px}

.original-body p.stem:last-child{margin-bottom:0}

.option-list{list-style:none;margin:8px 0 0;padding:0;display:grid;gap:4px}

.option-list li{font-size:13px;color:#54506e}

.original-foot{font-size:11px;color:#918c9f;margin:12px 0 0;padding-top:10px;border-top:1px solid #ece9f7}

.text-search-cta{margin:22px 0 6px}

.text-layout{display:grid;grid-template-columns:200px minmax(0,1fr);gap:24px;align-items:start}

.text-toc{position:sticky;top:24px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px 10px}

.toc-title{font-size:10px;color:#9392a0;letter-spacing:1px;margin:4px 8px 10px}

.toc-link{display:block;font-size:12px;color:#6e6c80;padding:6px 9px;border-radius:6px;line-height:1.5}

.toc-link.lv2{padding-left:18px}

.toc-link.lv3{padding-left:28px;color:#807b91}

.toc-link.active{background:#eeebfa;color:var(--primary);font-weight:600}

.text-article{font-family:var(--serif);font-size:15px;line-height:2.05}

.text-chunk-title{font:600 20px/1.5 var(--serif);margin:0 0 20px;padding-bottom:12px;border-bottom:1px solid var(--line)}

.paper-line{margin:0 0 13px}

.blank{display:inline-block;min-width:34px;text-align:center;border-bottom:1.5px solid var(--primary);color:var(--primary);font:600 12px/1 var(--sans);margin:0 4px}

@media(max-width:900px){.text-layout{grid-template-columns:1fr}.text-toc{position:static}}

@media print{.text-toc,.text-search-cta{display:none}.text-layout{display:block}}



/* ===== 答案速查 ===== */

.badge-ans{background:#fdf1dc;color:#8a6420}

.ans-sub{font:600 13px/1.6 var(--serif);margin:20px 0 9px;color:#4a4763}

.ans-grid{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:6px;max-width:660px}

.ans-cell{display:flex;flex-direction:column;align-items:center;gap:1px;padding:6px 2px;border:1px solid var(--line);border-radius:6px;background:#fcfcfe}

.ans-cell i{font:400 9px/1 var(--sans);color:#a3a0b0;font-style:normal}

.ans-cell b{font:600 13px/1.2 Georgia,var(--serif);color:var(--primary)}

.ans-cell.ans-empty b{color:#ccc8d6}

.trans-list{display:grid;gap:6px}

.trans-list details{border:1px solid var(--line);border-radius:7px;background:#fcfcfe;padding:9px 13px}

.trans-list summary{font-size:12px;color:#6e6c80;cursor:pointer}

.trans-list p{margin:9px 0 2px;font-size:13px;line-height:2;color:#4a4763}

@media(max-width:650px){.ans-grid{grid-template-columns:repeat(5,minmax(0,1fr));gap:4px}.ans-cell b{font-size:12px}}

@media print{.trans-list details>p{display:block!important}}



/* ===== 按题型刷真题 ===== */

.badge-none{background:#f3f2f6;color:#9a96a8}

.drill-row{display:flex;align-items:center;gap:16px;padding:12px 14px;border-bottom:1px solid #f0eff5;border-radius:7px}

.drill-row:last-child{border-bottom:0}

.drill-row:hover{background:#faf9fe}

.drill-entry .paper-strip{margin:16px 0 20px}

.drill-layout{display:grid;grid-template-columns:minmax(0,1fr) 372px;gap:22px;align-items:start}

.drill-source{background:#fff;border:1px solid var(--line);border-radius:11px;padding:24px 27px;font-family:var(--serif);font-size:14.5px;line-height:2.05}

.drill-chunk{font:600 16px/1.5 var(--serif);margin:0 0 14px;padding-bottom:10px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:baseline;gap:12px}

.drill-range{font:400 11px/1 var(--sans);color:#918c9f}

.drill-text+.drill-text{margin-top:28px}

.drill-side{position:sticky;top:24px}

.drill-panel{background:#fff;border:1px solid var(--line);border-radius:11px;padding:18px 20px}

.drill-grid{display:grid;gap:6px}

.drill-cell{display:flex;align-items:center;gap:9px;padding:4px 7px;border-radius:7px;border:1px solid transparent}

.drill-cell i{font:400 10px/1 var(--sans);color:#a3a0b0;font-style:normal;min-width:18px;text-align:right}

.drill-opts{display:flex;gap:5px}

.pick{width:29px;height:26px;border:1px solid var(--line);border-radius:6px;background:#fcfcfe;font:600 12px/1 var(--sans);color:#7a7590}

.pick:hover{border-color:#c9bff0;color:var(--primary)}

.pick.on{background:var(--primary);border-color:var(--primary);color:#fff}

.drill-cell.right{background:#f2f9f5;border-color:#d5eadf}

.drill-cell.right .pick.on{background:var(--green);border-color:var(--green)}

.drill-cell.wrong{background:#fdf4f4;border-color:#f0d8d8}

.drill-cell.wrong .pick.on{background:#c0504d;border-color:#c0504d}

.drill-cell.blank{background:#fafafa}

.drill-key{font:600 12px/1 var(--sans);color:#397b69;margin-left:auto}

.drill-cell.wrong .drill-key{color:#c0504d}

.drill-result{display:flex;align-items:center;gap:12px;margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;flex-wrap:wrap}

.drill-result b{font:600 22px/1 var(--serif);color:var(--primary)}

.drill-nav{flex-wrap:wrap;gap:16px}

@media(max-width:1150px){.drill-layout{grid-template-columns:1fr}.drill-side{position:static}}

@media(max-width:650px){.drill-source{padding:18px 16px;font-size:14px}.pick{width:26px;height:24px;font-size:11px}.drill-cell i{min-width:16px}}

@media print{.drill-side{display:none}.drill-layout{display:block}}



/* ===== 原文里的横排选项 ===== */

.opt-row{display:flex;flex-wrap:wrap;gap:4px 24px}

.opt-row span{flex:0 1 auto;min-width:90px}

@media(max-width:650px){.opt-row{gap:3px 14px}.opt-row span{min-width:64px}}

@media print{.opt-row{display:block}.opt-row span{display:inline-block;margin-right:16px}}
/* ===== 练习页的识别质量提示 ===== */
.drill-warn{background:#fdf7ec;border:1px solid #ecdcc0;color:#8a6420;border-radius:7px;padding:10px 14px;font-size:12px;line-height:1.8;margin:0 0 16px;font-family:var(--sans)}
.drill-warn b{color:#b5771a}

/* ===== 词汇 ===== */
.vocab-lookup{padding:20px 22px}
.lookup-row{display:flex;gap:10px;margin-bottom:14px}
.lookup-row input{flex:1;border:1px solid var(--line);border-radius:7px;padding:10px 14px;font-size:14px;background:#fff}
.lookup-row input:focus{outline:2px solid #c9bff0;border-color:#c9bff0}
.word-hit{display:flex;gap:16px;align-items:baseline;padding:9px 0;border-bottom:1px solid #f2f1f7}
.word-hit:last-child{border-bottom:0}
.word-hit b{font:600 15px/1.4 Georgia,var(--serif);color:var(--ink);min-width:130px}
.word-hit span{font-size:13px;color:#6e6c80;line-height:1.9}
.word-hit.exact{background:#f6f4fd;border-radius:7px;padding:11px 13px;margin-bottom:8px}
.word-hit.exact b{color:var(--primary)}
.word-group{font-size:11px;color:#9392a0;letter-spacing:.5px;margin:16px 0 6px}
.vocab-filter{display:flex;align-items:center;gap:12px;margin:0 0 14px}
.vocab-filter input{flex:1;max-width:360px;border:1px solid var(--line);border-radius:7px;padding:9px 13px;font-size:13px;background:#fff}
.vocab-article h2{font:600 20px/1.5 var(--serif);margin:0 0 8px}
.vocab-article h3{font:600 16px/1.5 var(--serif);margin:30px 0 10px;padding-bottom:8px;border-bottom:1px solid var(--line)}
.vocab-article h4{font:600 15px/1.5 var(--serif);margin:24px 0 8px;color:#4a4763}
.vocab-article blockquote{border-left:3px solid #cfc7ee;background:#f7f5fd;padding:12px 16px;margin:14px 0;font-size:13px;color:#5a5470;border-radius:0 7px 7px 0}
.md-table-wrap{overflow-x:auto;margin:14px 0}
.md-table{border-collapse:collapse;width:100%;font-size:13px}
.md-table th{background:#f6f5fa;text-align:left;padding:9px 12px;border-bottom:1px solid var(--line);font-weight:600;white-space:nowrap}
.md-table td{padding:8px 12px;border-bottom:1px solid #f4f3f8;line-height:1.8}
.md-table tr:hover td{background:#faf9fe}
.md-table td:first-child{font-family:Georgia,var(--serif);font-weight:600}
@media(max-width:650px){.word-hit{flex-direction:column;gap:2px}.word-hit b{min-width:0}.lookup-row{flex-direction:column}}
@media print{.vocab-filter,.lookup-row{display:none}}

/* ===== 示范里的横排选项 ===== */
.option-rows{margin:10px 0 0}
.option-rows .opt-row{margin:6px 0}
.option-rows .opt-row span{font-family:Georgia,var(--serif);font-size:13.5px;color:#33313f}

/* ===== 错题本 ===== */
.mistake-group{margin:0 0 28px}
.mistake-group h3{font:600 16px/1.5 var(--serif);margin:0 0 12px;display:flex;align-items:baseline;gap:10px}
.mistake-group h3 small{font:400 11px/1 var(--sans);color:#9392a0;letter-spacing:.5px}
.mistake-row{border:1px solid var(--line);border-radius:9px;padding:14px 16px;margin-bottom:10px;background:#fff}
.mistake-head{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:10px}
.mistake-head b{font:600 14px/1.4 var(--serif)}
.mistake-actions{margin-left:auto;display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.link-button{background:none;border:0;color:#9392a0;font:400 12px/1 var(--sans);cursor:pointer;padding:0;text-decoration:underline;text-underline-offset:3px}
.link-button:hover{color:#c0504d}
.mistake-cells{display:flex;flex-wrap:wrap;gap:8px}
.mistake-cell{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:7px;padding:5px 10px;font-size:12px;background:#fbfaff}
.mistake-cell b{font:600 12px/1 var(--sans);color:#6e6c80;min-width:16px;text-align:center}
.mistake-cell i{font-style:normal;font-weight:600;width:20px;height:20px;line-height:20px;text-align:center;border-radius:5px}
.mistake-cell .mine{background:#fdeceb;color:#c0504d;text-decoration:line-through}
.mistake-cell .right{background:#e8f5ec;color:#2f7d4f}
@media print{.mistake-actions{display:none}}

/* ===== 新题型选项可到 A–H，允许换行 ===== */
.drill-opts{flex-wrap:wrap}
.drill-opts .pick{min-width:24px}

/* 本地双击打开时的 PDF 说明卡（file:// 下浏览器不允许内嵌本地 PDF） */
.pdf-local{max-width:760px;margin:8px 0 0;padding:26px 30px;border:1px solid var(--line,#e3e2ec);border-radius:14px;background:var(--card,#fff)}
.pdf-local-title{margin:0 0 14px;font-size:19px;font-weight:700;color:var(--ink,#232135)}
.pdf-local p{margin:0 0 12px;line-height:1.85;color:var(--ink-2,#4a4860)}
.pdf-local code{padding:1px 6px;border-radius:5px;background:#efeeF7;font-size:.92em}
.pdf-local-list{margin:0 0 14px;padding-left:1.35em;line-height:1.95;color:var(--ink-2,#4a4860)}
.pdf-local .pdf-actions{margin-top:18px;display:flex;flex-wrap:wrap;gap:10px;align-items:center}

/* 桌面作答与导读 */
.study-workspace{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(340px,.85fr);gap:24px;align-items:start}
.study-material,.study-guidance{min-width:0}.study-guidance{position:sticky;top:20px;max-height:calc(100vh - 40px);overflow:auto}
.study-guidance .article,.study-intro{font-size:15px;line-height:1.9}.study-guidance h2{font-size:22px}
.study-callout{padding:14px 18px;background:#f5f2fa;border-left:3px solid var(--primary);border-radius:4px;font-family:var(--sans);font-size:14px;line-height:1.9}
.study-steps{padding-left:24px}.study-steps li{padding:6px 0;line-height:1.95}
.paper-figure{margin:18px 0;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}.paper-figure img{display:block;width:100%;height:auto}.paper-figure figcaption{padding:14px;font-size:12px;color:var(--muted)}.paper-figure a{color:var(--primary)}
.study-details{margin:16px 0;padding:15px 18px;background:white;border:1px solid var(--line);border-radius:8px}.study-details summary{cursor:pointer;color:var(--primary);font-size:14px;font-weight:600}.study-details[open] summary{margin-bottom:14px}
.draft-label{display:block;font-size:14px;font-weight:600;margin:20px 0 9px}.study-draft{display:block;box-sizing:border-box;width:100%;min-height:190px;resize:vertical;padding:15px;border:1px solid #d9d0e6;border-radius:7px;font:15px/1.9 var(--sans);color:#433754;background:#fdfcff}.writing-workspace .study-draft{font-family:var(--serif);min-height:260px}
.study-draft:focus{outline:2px solid #b8a5d9;outline-offset:2px}.translation-intro{margin-bottom:24px}.translation-questions{display:grid;gap:22px}.translation-card{font-size:15px}.translation-original{font:18px/1.95 var(--serif);color:#41384f}.translation-flow{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}.translation-flow span{padding:8px 12px;border:1px solid var(--line);border-radius:6px;font-size:13px}
@media(max-width:1100px){.study-workspace{grid-template-columns:1fr}.study-guidance{position:static;max-height:none;overflow:visible}}
@media print{.study-guidance{position:static;max-height:none;overflow:visible}.study-workspace{display:block}.study-draft{min-height:120px}}