/* GRE 模块样式均限定于 .gre-app；网站导航由宿主替换。 */
.gre-app{--gre-primary:#168267;--gre-primary-hover:#10654f;--gre-mint:#e7f3ed;--gre-text:#29352f;--gre-muted:#68776e;--gre-border:#dae2dc;--gre-bg:#f0f2f1;--gre-correct:#176d43;--gre-wrong:#b53937;margin:0;background:var(--gre-bg);color:var(--gre-text);font-family:Cabin,Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.6;min-height:100vh}
.gre-app *{box-sizing:border-box}.gre-app [hidden]{display:none!important}.gre-app button:not(:where(.gre-shared-vocab *)),.gre-app input:not(:where(.gre-shared-vocab *)),.gre-app select:not(:where(.gre-shared-vocab *)),.gre-app textarea:not(:where(.gre-shared-vocab *)){font:inherit}.gre-app button:not(:where(.gre-shared-vocab *)),.gre-app a,.gre-app input:not(:where(.gre-shared-vocab *)),.gre-app select:not(:where(.gre-shared-vocab *)),.gre-app textarea:not(:where(.gre-shared-vocab *)){ -webkit-tap-highlight-color:transparent}.gre-app button:not(:where(.gre-shared-vocab *)){cursor:pointer}.gre-app button:not(:where(.gre-shared-vocab *)):disabled{cursor:not-allowed;opacity:.45}.gre-app a:not(:where(.gre-shared-vocab *)){color:inherit;text-decoration:none}.gre-app h1:not(:where(.gre-shared-vocab *)),.gre-app h2:not(:where(.gre-shared-vocab *)),.gre-app h3:not(:where(.gre-shared-vocab *)),.gre-app p:not(:where(.gre-shared-vocab *)){margin:0}.gre-app :focus-visible{outline:3px solid #168267;outline-offset:3px}.gre-app .gre-sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.gre-app .gre-skip{position:fixed;top:-80px;left:16px;padding:10px;background:#fff;z-index:100}.gre-app .gre-skip:focus{top:10px}
.gre-app .gre-nav{height:72px;display:flex;align-items:center;gap:32px;justify-content:space-between;padding:0 max(28px,calc((100vw - 1320px)/2));background:rgba(255,255,255,.85);border-bottom:1px solid #e3e8e4}.gre-app .gre-brand{display:flex;gap:10px;align-items:center;font-size:21px;font-weight:700;letter-spacing:-.5px;white-space:nowrap}.gre-app .gre-brand img{width:33px;height:33px}.gre-app .gre-brand-sub{font-size:14px;margin-left:8px;color:var(--gre-primary);font-weight:500;letter-spacing:0}.gre-app .gre-nav-label{margin-right:auto;color:var(--gre-muted);font-size:14px;border-left:1px solid var(--gre-border);padding-left:28px}.gre-app .gre-preview,.gre-app .gre-pill{padding:5px 12px;border-radius:20px;background:var(--gre-mint);color:var(--gre-primary);font-size:12px;white-space:nowrap}.gre-app .gre-nav-back{font-size:14px;color:var(--gre-muted)}
.gre-app .gre-home-main{max-width:1320px;margin:auto;padding:38px 28px 0}.gre-app .gre-hero{display:flex;justify-content:space-between;align-items:center;min-height:270px;padding:16px 8px 35px;gap:24px}.gre-app .gre-eyebrow{font-size:11px;letter-spacing:2px;font-weight:700;color:var(--gre-primary);margin-bottom:12px}.gre-app .gre-hero h1{font-size:44px;line-height:1.25;font-weight:600;letter-spacing:-1px}.gre-app .gre-hero-copy{margin-top:18px;color:var(--gre-muted);font-size:15px}.gre-app .gre-hero-meta{display:flex;gap:20px;font-size:12px;color:var(--gre-muted);margin-top:22px}.gre-app .gre-hero-meta span+span{border-left:1px solid var(--gre-border);padding-left:20px}.gre-app .gre-hero-mark{font-size:146px;font-weight:800;letter-spacing:-10px;line-height:1;color:#d7e4db;position:relative;margin-right:45px}.gre-app .gre-hero-mark:before{content:"";position:absolute;width:130px;height:130px;border-radius:50%;border:1px solid #d0ded4;top:0;left:-65px;z-index:-1}.gre-app .gre-hero-mark span{display:block;font-size:12px;font-weight:400;letter-spacing:2px;text-align:right;margin-top:15px;color:var(--gre-muted)}
.gre-app .gre-section-title{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:22px}.gre-app .gre-section-title h2{font-size:23px;font-weight:600;letter-spacing:-.5px}.gre-app .gre-section-title .gre-eyebrow{margin-bottom:5px}.gre-app .gre-muted{color:var(--gre-muted);font-size:13px}.gre-app .gre-bank-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.gre-app .gre-bank{min-height:168px;position:relative;display:flex;flex-direction:column;align-items:start;text-align:left;padding:23px 24px;background:#fff;border:1px solid var(--gre-border);border-radius:12px;transition:border-color .18s,background .18s,transform .18s;color:var(--gre-text)}.gre-app .gre-bank:hover{border-color:var(--gre-primary);transform:translateY(-2px)}.gre-app .gre-bank.is-active{border-color:var(--gre-primary);background:#eef7f1;box-shadow:inset 0 0 0 1px var(--gre-primary)}.gre-app .gre-bank-number{position:absolute;right:20px;top:19px;color:#8c9c90;font-size:12px}.gre-app .gre-bank-kind{color:var(--gre-muted);font-size:10px;letter-spacing:1.5px;margin-bottom:20px}.gre-app .gre-bank h3{font-size:19px;font-weight:600;margin-bottom:8px}.gre-app .gre-bank-count{font-size:12px;color:var(--gre-muted)}.gre-app .gre-bank-arrow{position:absolute;right:22px;bottom:20px;font-size:20px;color:var(--gre-primary)}
.gre-app .gre-resume{border:1px solid #c6dacf;background:#e9f3ed;display:flex;align-items:center;justify-content:space-between;padding:18px 24px;border-radius:12px;margin:0 0 30px}.gre-app .gre-resume strong{font-size:16px}.gre-app .gre-resume p{font-size:13px;color:var(--gre-muted);margin-top:4px}.gre-app .gre-filter-panel{background:#fff;border:1px solid var(--gre-border);border-radius:12px;padding:26px;margin-top:22px}.gre-app .gre-filter-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px 24px}.gre-app label:not(:where(.gre-shared-vocab *)){font-size:13px;font-weight:500}.gre-app .gre-filter-grid input,.gre-app .gre-filter-grid select{display:block;width:100%;margin-top:7px;min-height:44px;padding:9px 12px;border:1px solid var(--gre-border);border-radius:6px;background:#fafcfb;color:var(--gre-text)}.gre-app .gre-filter-footer{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-top:24px;padding-top:20px;border-top:1px solid #e9edea}.gre-app .gre-filter-footer p{font-size:13px;color:var(--gre-muted)}
.gre-app .gre-button{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:44px;padding:10px 18px;border:1px solid var(--gre-border);border-radius:7px;background:#fff;color:var(--gre-text);font-size:13px;font-weight:600;transition:background .15s}.gre-app .gre-button:hover{background:#f1f5f2}.gre-app .gre-primary{color:#fff;background:var(--gre-primary);border-color:var(--gre-primary)}.gre-app .gre-primary:hover{background:var(--gre-primary-hover)}.gre-app .gre-writing-card{display:flex;align-items:center;gap:22px;padding:26px;margin-top:22px;border:1px dashed #c3d1c7;border-radius:12px;background:#e9eeeb}.gre-app .gre-writing-card h2{font-size:20px;font-weight:600}.gre-app .gre-writing-card p:not(.gre-eyebrow){color:var(--gre-muted);font-size:13px;margin-top:5px}.gre-app .gre-writing-card .gre-eyebrow{margin-bottom:4px}.gre-app .gre-writing-icon{font-size:30px;font-family:Georgia,serif;color:#607768;width:56px;height:56px;display:grid;place-items:center;background:#fff;border-radius:8px}.gre-app .gre-writing-card .gre-pill{margin-left:auto;background:#dfe8e2;color:#516a59}.gre-app .gre-footer{text-align:center;color:var(--gre-muted);font-size:11px;padding:32px}.gre-app .gre-notice:empty{display:none}.gre-app .gre-notice{border-radius:7px;padding:12px 16px;background:#fff3d6;color:#79531c;font-size:13px;margin:12px 0}
.gre-app .gre-practice-main{max-width:1600px;margin:auto;padding:26px 30px}.gre-app .gre-practice-top{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:16px}.gre-app .gre-practice-top h1{font-size:24px;font-weight:600}.gre-app .gre-practice-top .gre-eyebrow{margin-bottom:4px}.gre-app .gre-tools{display:flex;align-items:center;gap:10px}.gre-app .gre-timer{font-size:14px;font-variant-numeric:tabular-nums;color:var(--gre-muted);margin-right:10px}.gre-app .gre-language select{min-height:44px;padding:8px 12px;background:#fff;border:1px solid var(--gre-border);border-radius:7px}.gre-app .gre-progress-track{height:3px;background:#dce6df;border-radius:4px;margin-bottom:22px;overflow:hidden}.gre-app #progress-bar{height:100%;background:var(--gre-primary);transition:width .2s}.gre-app .gre-workspace{display:grid;grid-template-columns:170px minmax(0,1fr);gap:22px;align-items:start}.gre-app .gre-answer-sheet{padding:18px 14px;background:#e9eeeb;border:1px solid var(--gre-border);border-radius:10px}.gre-app .gre-answer-sheet h2{font-size:15px}.gre-app .gre-answer-sheet p{margin:4px 0 15px}.gre-app .gre-sheet-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:5px;max-height:44vh;overflow:auto;padding:3px}.gre-app .gre-sheet-item{min-height:38px;padding:4px 2px;background:#fff;border:1px solid #d6dfd8;border-radius:5px;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:12px;color:var(--gre-text)}.gre-app .gre-sheet-item small{font-size:9px;line-height:1.2}.gre-app .gre-sheet-item.is-current{outline:2px solid var(--gre-primary);outline-offset:1px}.gre-app .gre-sheet-item.is-answered{background:#dceee3}.gre-app .gre-sheet-item.is-correct{color:var(--gre-correct);background:#dbefdf;border-color:#a7cbb1}.gre-app .gre-sheet-item.is-wrong{color:var(--gre-wrong);background:#fde9e7;border-color:#ebc3bd}.gre-app .gre-sheet-legend{display:grid;grid-template-columns:1fr 1fr;gap:5px;font-size:10px;color:var(--gre-muted);padding:14px 0}.gre-app .gre-answer-sheet>.gre-button{display:flex;width:100%;padding:9px 6px;margin-top:8px;font-size:12px}.gre-app .gre-main-card{background:#fff;border:1px solid var(--gre-border);border-radius:12px;overflow:hidden;min-width:0}.gre-app .gre-question-content{display:flex;min-height:570px;max-height:calc(100vh - 275px);overflow:auto}.gre-app .gre-question{flex:1;min-width:0;padding:30px 38px;overflow:auto}.gre-app .gre-question-content.has-passage .gre-question{flex:0 0 48%;padding:26px 30px}.gre-app .gre-passage{flex:1;min-width:0;border-right:1px solid var(--gre-border);overflow:auto;background:#fafcfb;padding:26px 30px}.gre-app .gre-panel-heading{display:flex;gap:15px;justify-content:space-between;font-size:11px;letter-spacing:1px;color:var(--gre-primary);padding-bottom:18px;border-bottom:1px solid var(--gre-border);margin-bottom:22px}.gre-app .gre-panel-heading span{font-size:10px;color:var(--gre-muted);letter-spacing:0}.gre-app .gre-passage-body{font-size:17px;line-height:1.85}.gre-app .gre-passage-body p{margin-bottom:18px}.gre-app .gre-passage [data-sentence][role=button]{cursor:pointer;border-radius:3px;transition:background .15s}.gre-app .gre-passage [data-sentence][role=button]:hover{background:#e3eee5}.gre-app .gre-passage [data-sentence].is-selected{background:#cae6d5;box-shadow:0 2px 0 #168267}.gre-app .gre-tags{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:8px}.gre-app .gre-tags span{background:#edf1ee;color:#52675a;padding:3px 9px;border-radius:4px;font-size:11px}.gre-app .gre-question-id{color:#809086;font-size:10px;overflow-wrap:anywhere;margin-bottom:18px}.gre-app .gre-instruction{color:var(--gre-muted);font-size:12px;padding:10px 13px;background:#f2f6f3;border-radius:5px;margin:0 0 22px}.gre-app .gre-stem{font-size:18px;line-height:1.8;margin-bottom:24px;overflow-wrap:break-word}.gre-app .gre-stem p{margin-bottom:13px}.gre-app .gre-stem img,.gre-app .gre-passage-body img,.gre-app .gre-option img,.gre-app .gre-explanation img{max-width:100%;height:auto}.gre-app .gre-blank{display:inline-block;white-space:nowrap;color:var(--gre-primary);font-weight:600}.gre-app .gre-options{display:flex;flex-direction:column;gap:10px}.gre-app .gre-option{display:flex;align-items:flex-start;gap:12px;border:1px solid var(--gre-border);border-radius:7px;padding:13px 15px;min-height:48px;cursor:pointer;font-size:16px;font-weight:400;line-height:1.55;transition:background .15s,border-color .15s}.gre-app .gre-option:hover{background:#f6f9f7;border-color:#9ebca9}.gre-app .gre-option.is-selected{border-color:var(--gre-primary);background:#edf7f0;box-shadow:inset 0 0 0 1px var(--gre-primary)}.gre-app .gre-option input{accent-color:var(--gre-primary);margin:6px 0 0;flex-shrink:0;width:16px;height:16px}.gre-app .gre-letter{font-size:12px;font-weight:700;line-height:24px;color:var(--gre-muted);flex-shrink:0}.gre-app .gre-option>span:last-child{min-width:0;overflow-wrap:anywhere}.gre-app .gre-translation{font-size:.9em;color:var(--gre-muted);padding-top:9px;margin-top:9px;border-top:1px dashed #dbe5de;line-height:1.7}.gre-app .gre-blank-columns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.gre-app .gre-blank-columns:has(>section:nth-child(2):last-child){grid-template-columns:repeat(2,minmax(0,1fr))}.gre-app .gre-blank-columns h3{font-size:12px;color:var(--gre-muted);margin-bottom:10px}.gre-app .gre-blank-columns .gre-option{padding:12px 10px;font-size:15px;gap:8px}.gre-app .gre-quantities{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--gre-border);border-radius:7px;margin:18px 0 24px}.gre-app .gre-quantities section{padding:20px;text-align:center}.gre-app .gre-quantities section+section{border-left:1px solid var(--gre-border)}.gre-app .gre-quantities h3{font-size:13px;color:var(--gre-muted);margin-bottom:12px}.gre-app .gre-numeric{display:flex;flex-direction:column;gap:8px;width:min(280px,100%);font-size:13px}.gre-app .gre-numeric input,.gre-app .gre-fraction input{width:100%;font-size:22px;border:1px solid #9ebbaa;padding:12px;border-radius:6px;background:#fafcfb;color:var(--gre-text)}.gre-app .gre-fraction{width:160px}.gre-app .gre-fraction label{display:flex;gap:8px;align-items:center;color:var(--gre-muted)}.gre-app .gre-fraction input{width:105px;text-align:center}.gre-app .gre-fraction hr{border:0;border-top:2px solid #55695c;margin-left:33px}.gre-app .gre-sentence-status{padding:16px;border:1px dashed #b7cdbf;color:var(--gre-primary);border-radius:7px;font-size:14px}
.gre-app .gre-question-footer{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:16px 24px;border-top:1px solid var(--gre-border);background:#fafcfb}.gre-app .gre-question-footer>div{display:flex;gap:10px}.gre-app .gre-review{margin-top:24px;border:1px solid #a9cdb5;border-left:4px solid var(--gre-correct);border-radius:6px;padding:20px;background:#f2faf4;font-size:14px;line-height:1.8}.gre-app .gre-review h3{font-size:17px;color:var(--gre-correct);margin-bottom:7px}.gre-app .gre-review.is-wrong{background:#fff8f6;border-color:#e1c2ba;border-left-color:var(--gre-wrong)}.gre-app .gre-review.is-wrong>h3{color:var(--gre-wrong)}.gre-app .gre-explanation{border-top:1px solid #d8e4db;padding-top:18px;margin-top:16px;overflow-wrap:break-word}.gre-app .gre-explanation h3{font-size:15px;color:var(--gre-text);margin:15px 0 8px}.gre-app .gre-explanation p{margin:8px 0}.gre-app .gre-explanation li{margin-bottom:8px}.gre-app .gre-save-status{text-align:right;font-size:11px;color:var(--gre-muted);margin:12px 0}.gre-app .gre-summary{padding:32px;background:white;border:1px solid var(--gre-border);border-radius:12px;margin:24px 0}.gre-app .gre-summary h2{font-size:24px}.gre-app .gre-result-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin:24px 0}.gre-app .gre-result-grid>div{padding:20px;background:#f0f6f2;border-radius:8px;display:flex;flex-direction:column}.gre-app .gre-result-grid strong{font-size:32px;color:var(--gre-primary)}.gre-app .gre-result-grid span{font-size:12px;color:var(--gre-muted)}.gre-app .gre-summary>a{margin-top:18px}.gre-app .gre-empty{padding:50px}.gre-app .gre-empty p{margin:15px 0}.gre-app .gre-essay-label{display:block}.gre-app #essay{display:block;width:100%;min-height:320px;resize:vertical;margin-top:10px;border:1px solid var(--gre-border);border-radius:8px;padding:20px;font-size:17px;line-height:1.8}.gre-app .gre-writing-directions{font-size:15px;margin:15px 0}.gre-app #word-count{margin-top:10px}.gre-app mjx-container{max-width:100%}.gre-app mjx-container[display=true]{overflow-x:auto;overflow-y:hidden;padding:6px 0}.gre-app math{font-size:1.1em}
@media(min-width:1450px){.gre-app .gre-question-content{min-height:650px}}
@media(max-width:1100px){.gre-app .gre-hero-mark{font-size:110px;margin-right:0}.gre-app .gre-bank-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.gre-app .gre-workspace{grid-template-columns:135px minmax(0,1fr);gap:15px}.gre-app .gre-sheet-grid{grid-template-columns:repeat(3,1fr)}.gre-app .gre-question{padding:24px}.gre-app .gre-passage,.gre-app .gre-question-content.has-passage .gre-question{padding:22px}}
@media(max-width:760px){.gre-app .gre-nav{height:62px;padding:0 18px;gap:15px}.gre-app .gre-brand{font-size:18px}.gre-app .gre-brand-sub,.gre-app .gre-nav-label{display:none}.gre-app .gre-home-main{padding:25px 18px 0}.gre-app .gre-hero{min-height:auto;padding:10px 0 30px}.gre-app .gre-hero h1{font-size:34px}.gre-app .gre-hero-mark{display:none}.gre-app .gre-hero-meta{gap:12px;font-size:11px}.gre-app .gre-hero-meta span+span{padding-left:12px}.gre-app .gre-bank-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.gre-app .gre-bank{padding:18px;min-height:153px}.gre-app .gre-bank h3{font-size:17px}.gre-app .gre-bank-number{right:16px}.gre-app .gre-section-title>.gre-muted{display:none}.gre-app .gre-filter-panel{padding:20px}.gre-app .gre-filter-grid{grid-template-columns:1fr 1fr;gap:15px}.gre-app .gre-filter-footer{align-items:start;flex-direction:column}.gre-app .gre-filter-footer .gre-button{width:100%}.gre-app .gre-writing-card{padding:20px;gap:13px;align-items:start;flex-wrap:wrap}.gre-app .gre-writing-card>div:nth-child(2){flex:1;min-width:180px}.gre-app .gre-writing-card .gre-pill{margin-left:69px}.gre-app .gre-resume{padding:16px;gap:12px;align-items:start;flex-direction:column}.gre-app .gre-practice-main{padding:18px 14px}.gre-app .gre-practice-top{flex-wrap:wrap;gap:12px}.gre-app .gre-practice-top h1{font-size:20px}.gre-app .gre-tools{width:100%;justify-content:flex-end}.gre-app .gre-timer{margin-right:auto}.gre-app .gre-workspace{display:flex;flex-direction:column}.gre-app .gre-answer-sheet{width:100%;padding:14px}.gre-app .gre-answer-sheet h2{display:inline}.gre-app .gre-answer-sheet>p{display:inline;margin-left:12px}.gre-app .gre-sheet-grid{grid-template-columns:repeat(8,minmax(0,1fr));max-height:140px;margin-top:10px;gap:6px}.gre-app .gre-sheet-item{min-height:36px}.gre-app .gre-sheet-legend{display:flex;gap:15px;padding:10px 0}.gre-app .gre-answer-sheet>.gre-button{display:inline-flex;width:auto;margin:0 8px 0 0;padding:8px 12px}.gre-app .gre-main-card{width:100%}.gre-app .gre-question-content{min-height:350px;max-height:none;display:block;overflow:visible}.gre-app .gre-question-content.has-passage .gre-question{padding:22px 18px}.gre-app .gre-question{padding:22px 18px;overflow:visible}.gre-app .gre-passage{padding:22px 18px;border-right:0;border-bottom:1px solid var(--gre-border);max-height:380px;overflow:auto}.gre-app .gre-stem{font-size:17px}.gre-app .gre-option{font-size:15px;padding:12px;gap:9px}.gre-app .gre-question-footer{padding:12px;flex-wrap:wrap;gap:8px;position:sticky;bottom:0;z-index:5}.gre-app .gre-question-footer .gre-button{font-size:12px;padding:9px 10px}.gre-app .gre-question-footer #position{font-size:11px}.gre-app .gre-blank-columns{gap:8px}.gre-app .gre-blank-columns .gre-option{font-size:13px;padding:10px 6px;flex-wrap:wrap;gap:4px}.gre-app .gre-blank-columns .gre-option>span:last-child{width:100%}.gre-app .gre-quantities section{padding:14px 8px}.gre-app .gre-summary{padding:22px}.gre-app .gre-result-grid{grid-template-columns:1fr 1fr}.gre-app .gre-review{padding:14px}.gre-app .gre-explanation ul{padding-left:20px}}
@media(prefers-reduced-motion:reduce){.gre-app *{transition:none!important;scroll-behavior:auto!important}}

.gre-app .gre-image-link{display:inline-block;max-width:100%;cursor:zoom-in}.gre-app .gre-image-link img{max-height:320px;max-width:100%;width:auto;height:auto;object-fit:contain}.gre-app .gre-image-link:focus-visible{outline:3px solid var(--gre-primary)}
@media(max-width:760px){.gre-app .gre-image-link img{max-height:240px}}