/*! tailwindcss v4.2.1 | MIT License | https://tailwindcss.com */
@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before{box-sizing:border-box;border:0 solid;margin:0;padding:0}::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){-webkit-appearance:button;appearance:button}::file-selector-button{-webkit-appearance:button;appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.absolute{position:absolute}.start{inset-inline-start:var(--spacing)}.hidden{display:none}.table{display:table}.table-row{display:table-row}.resize{resize:both}.italic{font-style:italic}.underline{text-decoration-line:underline}.antialiased{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}}:root{--ink:#182238;--muted:#68738a;--paper:#f5f7fb;--card:#fff;--green:#3668e8;--line:#e1e6ef;--mint:#edf2ff}*{box-sizing:border-box}html{background:var(--paper)}body{color:var(--ink);background:var(--paper);margin:0;font-family:Inter,Arial,PingFang SC,Microsoft YaHei,sans-serif}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button{cursor:pointer}.shell{min-height:100vh}.topbar{background:#ffffffc7;justify-content:space-between;align-items:center;max-width:1320px;height:72px;margin:auto;padding:0 28px;display:flex}.topbar--library{max-width:1220px}.topbar-nav{align-items:center;gap:22px;display:flex}.brand{letter-spacing:.02em;align-items:center;gap:10px;font-size:21px;font-weight:800;display:flex}.brand-mark{background:var(--green);color:#fff;border-radius:9px;place-items:center;width:32px;height:32px;font-size:15px;display:grid;box-shadow:0 7px 16px #3668e838}.login-page{background:var(--paper);place-items:center;min-height:100vh;padding:24px;display:grid}.login-card{border:1px solid var(--line);background:#fff;border-radius:18px;gap:18px;width:min(100%,420px);padding:36px;display:grid;box-shadow:0 18px 50px #25375f1a}.login-brand{width:max-content;margin-bottom:4px}.login-card h1{margin:0;font-size:30px}.login-card p{color:var(--muted);margin:-8px 0 2px;line-height:1.6}.login-card label{gap:8px;font-size:14px;font-weight:650;display:grid}.login-card input{border:1px solid var(--line);width:100%;color:var(--ink);font:inherit;background:#fff;border-radius:10px;padding:12px 14px}.login-card input:focus{outline:2px solid var(--green)}@supports (color:color-mix(in lab, red, red)){.login-card input:focus{outline:2px solid color-mix(in srgb,var(--green) 28%,transparent)}}.login-card input:focus{border-color:var(--green)}.login-card .primary-btn{justify-content:center;width:100%}.login-error{color:#a33b2f;background:#fff0ed;border-radius:10px;padding:11px 13px;font-size:14px}.login-back{color:var(--muted);text-align:center;font-size:14px}.nav-link{color:var(--muted);font-size:14px}.student-search-page{background:#fff}.student-top{justify-content:flex-end;align-items:center;gap:12px;height:68px;padding:0 32px;display:flex}.student-top a{color:#5f687a;border-radius:8px;padding:8px 10px;font-size:13px}.student-top a:hover{color:#315ec7;background:#f3f5f9}.home-signature{color:#7e899e;letter-spacing:.06em;opacity:.48;-webkit-user-select:none;user-select:none;z-index:20;background:0 0;border:0;padding:4px;font-size:13px;font-weight:500;position:fixed;bottom:20px;right:28px}.home-signature:hover{opacity:.62}.fireworks-canvas{z-index:9999;pointer-events:none;width:100vw;height:100vh;position:fixed;inset:0}@media (prefers-reduced-motion:reduce){.fireworks-canvas{display:none}}.hero{text-align:center;max-width:850px;margin:0 auto;padding:112px 28px 82px}.eyebrow{letter-spacing:.13em;color:var(--green);text-transform:uppercase;font-size:13px;font-weight:800}.hero h1{letter-spacing:-.045em;margin:20px 0 18px;font-size:clamp(40px,6vw,64px);line-height:1.09}.hero p{color:var(--muted);margin:20px auto 36px;font-size:20px;line-height:1.7}.searchbox{border:1px solid var(--line);text-align:left;background:#fff;border-radius:16px;align-items:center;gap:10px;padding:9px;display:flex;box-shadow:0 16px 42px #2e457a1f}.search-icon{text-align:center;color:#83908a;width:48px;font-size:22px}.search-icon:before{content:"";vertical-align:-1px;border:2px solid #8a94a5;border-radius:50%;width:15px;height:15px;display:inline-block}.search-icon:after{content:"";vertical-align:-4px;background:#8a94a5;border-radius:2px;width:7px;height:2px;margin-left:-4px;display:inline-block;transform:rotate(45deg)}.searchbox input{background:0 0;border:0;outline:0;flex:1;min-width:0;padding:15px 0;font-size:17px}.search-home{max-width:670px;padding-top:150px;transition:padding .2s}.search-home.has-results{padding-top:52px;padding-bottom:55px}.search-logo{align-items:center;gap:14px;width:max-content;margin:0 auto 34px;display:flex}.search-logo-mark{background:var(--green);color:#fff;border-radius:18px;place-items:center;width:62px;height:62px;font-size:26px;font-weight:800;display:grid;box-shadow:0 12px 26px #3668e838}.search-logo strong{color:#234aaf;letter-spacing:-.06em;font-size:42px;font-weight:850}.search-submit{color:#657188;background:0 0;border:0;border-radius:50%;flex:none;place-items:center;width:44px;height:44px;font-size:23px;display:grid}.search-submit:hover{color:var(--green);background:#f0f3f9}.search-submit:disabled{opacity:.55;cursor:wait}.primary{background:var(--green);color:#fff;border:0;border-radius:11px;padding:15px 24px;font-weight:750;box-shadow:0 7px 16px #3668e833}.hint{color:#87908c!important;margin-top:18px!important;font-size:13px!important}.student-search-page .results{max-width:900px;margin:-22px auto 80px;padding:0 28px}.result-head{color:var(--muted);justify-content:space-between;align-items:center;margin-bottom:15px;font-size:14px;display:flex}.result-card{background:var(--card);border:1px solid var(--line);border-radius:15px;margin:12px 0;padding:23px 25px;transition:all .18s;display:block;box-shadow:0 5px 18px #2c3b5f0b}.result-card:hover{border-color:#b8c8f1;transform:translateY(-2px);box-shadow:0 12px 28px #2c3b5f1a}.meta,.tags{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.pill{background:var(--mint);color:#315ec7;border-radius:99px;padding:5px 9px;font-size:12px}.result-card h2{margin:13px 0 8px;font-size:22px}.result-card p{color:#5f6965;margin:0;line-height:1.65}.match-field{color:#315ec7;margin-right:9px;font-size:12px;font-weight:700;display:inline-block}.arrow{float:right;color:#668076}.detail-heading{max-width:1320px;margin:48px auto 0;padding:0 28px}.detail-wrap{grid-template-columns:minmax(0,1fr) 240px;align-items:start;gap:36px;max-width:1320px;margin:30px auto 90px;padding:0 28px;display:grid}.detail-wrap article{min-width:0}.crumb{max-width:1320px;color:var(--muted);margin:35px auto 0;padding:0 28px;font-size:14px}.detail-title{letter-spacing:-.025em;margin:15px 0 18px;font-size:40px;line-height:1.2}.panel{background:var(--card);border:1px solid var(--line);border-radius:15px;margin:18px 0;padding:26px 28px;box-shadow:0 5px 18px #2c3b5f0b}.detail-wrap article>.panel:first-child{margin-top:0}.panel h2{margin:0 0 20px;font-size:22px}.question-text{white-space:pre-wrap;font-size:16px;line-height:1.8}.toefl-separated-text{white-space:pre-wrap}.question-stem{font-weight:700}.choice{background:#f5f7fb;border-radius:11px;gap:13px;margin:9px 0;padding:13px 16px;line-height:1.55;display:flex}.choice.correct{background:#edf2ff;border:1px solid #bfd0fb}.choice b{flex:none;width:20px}.answer-box{background:var(--green);color:#fff;border-radius:14px;padding:20px 24px;font-size:18px}.explanation{white-space:pre-wrap;line-height:1.85}.option-analysis{border-top:1px solid var(--line);padding:17px 0;line-height:1.7}.side-card{background:#edf2ff;border:1px solid #dce5fb;border-radius:15px;height:max-content;padding:20px;position:sticky;top:24px}.side-card h3{color:var(--muted);margin:0 0 13px;font-size:14px}.side-card .pill{margin:0 5px 7px 0;display:inline-block}.question-library-links{gap:8px;margin-bottom:20px;display:grid}.question-library-links a{color:#315ec7;text-align:center;background:#fff;border-radius:8px;padding:9px 10px;font-size:13px;font-weight:700}.admin-shell{max-width:1220px;margin:30px auto 90px;padding:0 28px}.admin-head{justify-content:space-between;align-items:flex-end;margin:30px 0;display:flex}.admin-head h1{letter-spacing:-.025em;margin:0 0 7px;font-size:36px}.admin-head p{color:var(--muted);margin:0}.toolbar{grid-template-columns:minmax(220px,1fr) 150px 170px auto auto;align-items:stretch;gap:10px;margin:20px 0;display:grid}.toolbar--readonly{grid-template-columns:minmax(260px,1fr) 160px 180px auto}.toolbar-add{white-space:nowrap;justify-content:center;align-items:center;padding:11px 20px;display:flex}.toolbar-library{white-space:nowrap;justify-content:center;align-items:center;padding:10px 15px;display:flex}.control{background:#fff;border:1px solid #d8deea;border-radius:10px;outline:none;width:100%;padding:11px 13px}.control:focus{border-color:#8aa6ef;box-shadow:0 0 0 3px #3668e81a}.table{border:1px solid var(--line);background:#fff;border-radius:15px;overflow:hidden;box-shadow:0 5px 18px #2c3b5f0b}.table--loading{opacity:.58;transition:opacity .15s}.list-summary{color:var(--muted);justify-content:space-between;align-items:center;margin:-5px 2px 10px;font-size:13px;display:flex}.pagination{color:var(--muted);justify-content:center;align-items:center;gap:16px;margin-top:22px;font-size:13px;display:flex}.pagination .secondary{min-width:88px;padding:9px 15px}.pagination .secondary:disabled{opacity:.42;cursor:not-allowed}.table-row{border-bottom:1px solid #e8e7e1;grid-template-columns:minmax(270px,1.5fr) 120px 130px 1fr 130px;align-items:center;gap:14px;padding:16px 20px;display:grid}.table-row--readonly{grid-template-columns:minmax(270px,1.5fr) 120px 130px 1fr}.table-row>span,.table-row>.actions{font-size:12px}.table-row:last-child{border:0}.table-head{color:var(--muted);text-transform:uppercase;background:#f1f4fa;font-size:12px;font-weight:700}.question-link{border-radius:8px;min-width:0;margin:-7px -9px;padding:7px 9px;transition:background .16s,color .16s}.question-link:hover{color:#315ec7;background:#f1f5ff}.question-link:focus-visible{outline:2px solid var(--green);outline-offset:2px}.row-title{font-weight:700}.row-sub{color:var(--muted);margin-top:5px;font-size:12px}.concept-tags{align-items:flex-start;min-width:0}.concept-tags .pill{overflow-wrap:anywhere;word-break:break-word;border-radius:8px;width:fit-content;max-width:100%;line-height:1.4;display:inline-block}.actions{gap:8px;display:flex}.text-btn{color:#315ec7;background:0 0;border:0;padding:6px;font-size:12px}.danger{color:#b54d52}.form-grid{grid-template-columns:1fr 1fr;align-items:start;gap:24px;display:grid}.editor-shell{max-width:1280px}.editor-top-grid{grid-template-columns:1fr 1fr;align-items:stretch;gap:24px;display:grid}.editor-top-grid .section-card{height:calc(100% - 20px)}.section-card{border:1px solid var(--line);background:#fff;border-radius:15px;margin-bottom:20px;padding:23px;box-shadow:0 5px 18px #2c3b5f0a}.section-card h2{margin:0 0 5px;font-size:18px}.section-card>p{color:var(--muted);margin:0 0 19px;font-size:13px}.field{margin:14px 0}.field label{margin-bottom:7px;font-size:13px;font-weight:700;display:block}.field textarea{resize:vertical;min-height:110px;line-height:1.55}.auto-textarea{transition:border-color .15s,box-shadow .15s;overflow-y:hidden;resize:none!important}.passage-area{min-height:220px!important;line-height:1.7!important}.question-area{min-height:90px!important}.choice-area{min-height:76px!important}.explanation-area{min-height:230px!important}.inline-fields{grid-template-columns:1fr 1fr;gap:13px;display:grid}.ocr-grid{grid-template-columns:minmax(300px,.85fr) minmax(0,1.15fr);align-items:stretch;gap:22px;display:grid}.ocr-grid .dropzone{flex-direction:column;justify-content:center;min-height:260px;display:flex}.ocr-field{margin-top:0}.ocr-field textarea{resize:vertical;min-height:205px}.choice-editor-grid,.analysis-grid{grid-template-columns:1fr 1fr;gap:0 18px;display:grid}.dropzone{text-align:center;color:var(--muted);background:#f7f9fd;border:1px dashed #aebbd8;border-radius:12px;outline:none;padding:22px;transition:all .18s}.dropzone:focus,.dropzone.dragging{border-color:var(--green);background:#edf2ff;box-shadow:0 0 0 3px #3668e817}.dropzone img{border-radius:8px;max-width:100%;max-height:220px;margin:12px auto;display:block}.dropzone-title{color:var(--ink);margin-bottom:6px;font-weight:700}.dropzone-help{margin:8px 0 14px;font-size:12px}.question-image{object-fit:contain;background:#f2f1eb;border-radius:12px;width:100%;max-height:520px;margin-bottom:22px}.question-table-wrap{border:1px solid var(--line);border-radius:12px;width:100%;margin:0 0 22px;overflow-x:auto}.question-table{border-collapse:collapse;width:100%;color:var(--ink);font-size:14px;line-height:1.5}.question-table-wrap--fluid{overflow-x:hidden}.question-table-wrap--fluid .question-table{table-layout:fixed;min-width:0}.question-table-wrap--fluid th,.question-table-wrap--fluid td{white-space:pre-wrap;overflow-wrap:anywhere;word-break:normal}.question-table-wrap--wide .question-table{min-width:620px}.question-table caption{text-align:left;background:#f2f1eb;padding:12px 14px;font-weight:700}.question-table th,.question-table td{border:1px solid var(--line);vertical-align:top;text-align:left;padding:10px 12px}.question-table th{background:#f7f6f1;font-weight:700}.question-table tr:first-child th,.question-table tr:first-child td{border-top:0}.question-table tr:last-child th,.question-table tr:last-child td{border-bottom:0}.question-table th:first-child,.question-table td:first-child{border-left:0}.question-table th:last-child,.question-table td:last-child{border-right:0}.question-rich-text{white-space:pre-wrap}.question-rich-underline{text-underline-offset:3px;text-decoration:underline;text-decoration-thickness:1px}.question-rich-italic{font-style:italic}.question-rich-bold{font-weight:700}.sticky-actions{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid var(--line);background:#ffffffeb;border-radius:14px;justify-content:flex-end;gap:10px;padding:13px;display:flex;position:sticky;bottom:15px;box-shadow:0 10px 28px #2c3b5f14}.secondary{background:#fff;border:1px solid #bfc5bf;border-radius:10px;padding:12px 18px}.notice{color:#745b16;background:#fff4d5;border-radius:10px;margin:12px 0;padding:12px 14px;font-size:13px}.empty{text-align:center;color:var(--muted);padding:45px}.library-shell,.group-shell{max-width:1220px;margin:0 auto 90px;padding:38px 28px 0}.library-heading{justify-content:space-between;align-items:flex-end;gap:24px;margin:12px 0 28px;display:flex}.library-heading h1,.group-heading h1{letter-spacing:-.035em;margin:9px 0 7px;font-size:clamp(30px,4vw,44px)}.library-heading p{color:var(--muted);margin:0;line-height:1.6}.library-back{color:#315ec7;margin-bottom:20px;font-size:14px}.exam-grid,.material-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.exam-card,.material-card{border:1px solid var(--line);background:#fff;border-radius:15px;padding:23px;transition:all .18s;box-shadow:0 5px 18px #2c3b5f0b}.exam-card:hover,.material-card:hover{border-color:#b8c8f1;transform:translateY(-2px);box-shadow:0 12px 28px #2c3b5f1a}.exam-card h2,.material-card h2{margin:5px 0 15px;font-size:19px;line-height:1.45}.exam-counts{color:var(--muted);flex-wrap:wrap;gap:8px;font-size:13px;display:flex}.exam-subject-tabs{margin-bottom:22px}.sat-exam-questions{gap:12px;display:grid}.sat-exam-question{border:1px solid var(--line);background:#fff;border-radius:15px;grid-template-columns:58px minmax(0,1fr) 22px;align-items:start;gap:16px;padding:20px 22px;display:grid;box-shadow:0 5px 18px #2c3b5f0b}.sat-exam-question:hover{border-color:#b8c8f1;box-shadow:0 12px 28px #2c3b5f1a}.sat-exam-number{background:var(--mint);color:#315ec7;border-radius:11px;place-items:center;min-height:42px;font-weight:800;display:grid}.sat-exam-question h2{margin:10px 0 6px;font-size:19px}.sat-exam-question p{color:var(--muted);margin:0;line-height:1.6}.sat-exam-question .arrow{align-self:center}.pill.explained{color:#26704a;background:#e8f7ef}.exam-counts span{background:#f5f7fb;border-radius:8px;padding:6px 9px}.section-tabs{gap:8px;margin-bottom:22px;padding-bottom:3px;display:flex;overflow-x:auto}.section-tabs a{border:1px solid var(--line);white-space:nowrap;background:#fff;border-radius:10px;align-items:center;gap:8px;padding:10px 15px;display:flex}.section-tabs a.active{background:var(--green);border-color:var(--green);color:#fff}.section-tabs span{opacity:.7;font-size:12px}.material-card p{color:var(--muted);font-size:14px;line-height:1.65}.material-numbers{flex-wrap:wrap;gap:6px;margin-top:14px;display:flex}.material-numbers span{color:#315ec7;background:#edf2ff;border-radius:6px;padding:4px 7px;font-size:11px}.group-heading{margin:8px 0 25px}.group-material{margin-bottom:26px}.group-questions{gap:18px;display:grid}.group-question{scroll-margin-top:20px}.group-question-head{justify-content:space-between;align-items:center;margin-bottom:17px;font-weight:800;display:flex}.group-question-head a,.next-question{color:#315ec7;font-size:13px;font-weight:500}.group-options{margin-top:16px}.group-answer{background:#edf2ff;border-radius:10px;margin-top:18px;padding:12px 14px}.group-answer summary{cursor:pointer;color:#315ec7;font-weight:700}.group-answer>div{margin-top:10px;line-height:1.7}.toefl-target-highlight{color:inherit;-webkit-box-decoration-break:clone;box-decoration-break:clone;background:#fff176;border-radius:3px;padding:0 .08em}.next-question{width:max-content;margin:18px 0 0 auto;display:block}@media (max-width:760px){.topbar{height:62px;padding:0 18px}.hero{padding:66px 18px 54px}.searchbox{border-radius:14px}.search-icon{display:none}.primary{padding:14px 16px}.results{padding:0 18px}.detail-heading,.detail-wrap{padding-left:18px;padding-right:18px}.detail-wrap{grid-template-columns:1fr}.side-card{order:-1;position:static}.crumb{padding:0 18px}.detail-title{font-size:32px}.panel{padding:21px}.toolbar{grid-template-columns:1fr 1fr}.toolbar input,.toolbar-add,.toolbar-library{grid-column:1/-1}.table-head{display:none}.table-row{grid-template-columns:1fr 90px}.table-row>:nth-child(2),.table-row>:nth-child(3){display:none}.table-row>:nth-child(4){grid-column:1/-1}.form-grid,.editor-top-grid,.ocr-grid,.choice-editor-grid,.analysis-grid{grid-template-columns:1fr}.admin-shell{padding:0 16px}.admin-head{align-items:flex-start;gap:18px}.inline-fields{grid-template-columns:1fr}.home-signature{font-size:12px;bottom:14px;right:18px}.library-shell,.group-shell{padding:28px 18px 0}.library-heading{flex-direction:column;align-items:flex-start}.exam-grid,.material-grid{grid-template-columns:1fr}.group-heading h1{font-size:30px}}.toefl-word-gaps{vertical-align:baseline;align-items:flex-end;gap:3px;margin:0 2px;display:inline-flex}.toefl-letter-gap{border-bottom:2px solid;width:.55em;height:.9em;display:inline-block}.toefl-guide-text{white-space:pre-wrap}.toefl-audio{margin:14px 0}.toefl-audio audio{width:100%;margin-top:6px;display:block}.toefl-repeat-list{gap:22px;display:grid}.toefl-repeat-item{border-bottom:1px solid #e2e8f0;padding-bottom:20px}.toefl-repeat-item:last-child{border-bottom:0;padding-bottom:0}.toefl-repeat-item .question-image{margin-bottom:10px}.toefl-discussion{gap:18px;margin:18px 0;display:grid}.toefl-discussion-row{grid-template-columns:54px minmax(0,1fr);align-items:start;gap:12px;display:grid}.toefl-discussion-row--text{display:block}.toefl-discussion-avatar{object-fit:cover;background:#f1f5f9;border-radius:50%;width:48px;height:48px}.toefl-discussion-text{white-space:pre-wrap;background:#f8fafc;border-radius:12px;padding:12px 14px;line-height:1.7}.toefl-discussion-row--teacher .toefl-discussion-text{background:#eff6ff}.toefl-discussion-row--student .toefl-discussion-text{background:#f0fdf4}@media (max-width:640px){.toefl-discussion-row{grid-template-columns:42px minmax(0,1fr)}.toefl-discussion-avatar{width:38px;height:38px}}
