@charset "UTF-8";
:root{--page:#f8f9fc;--paper:#fff;--ink:#302e43;--muted:#797184;--purple:#7961ce;--purple-dark:#624bb5;--lavender:#f0ebfb;--border:#eeedf4;--mint:#eaf5ee;--orange:#b47139;--radius:20px;--sidebar:224px;--font:"PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;--display:"Trebuchet MS",var(--font)}
*{box-sizing:border-box}
body{margin:0;background:var(--page);color:var(--ink);font:14px/1.6 var(--font);-webkit-font-smoothing:antialiased}
button,input,select,textarea{font:inherit;color:inherit}
button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}
button,a{touch-action:manipulation}
button{cursor:pointer}
button:disabled{cursor:not-allowed;opacity:.5}
a{color:inherit;text-decoration:none}
button{border:0;background:none}
h1,h2,h3,p{margin:0}
h1,h2,h3{line-height:1.4;letter-spacing:-.025em}
input,select,textarea{border:1px solid #e4e2ee;background:#fff;border-radius:10px;padding:11px 14px;outline:none;min-width:0;transition:border-color .15s,box-shadow .15s}
input::placeholder,textarea::placeholder{color:#6e6c78;font-weight:400}
input:focus,select:focus,textarea:focus{border-color:#9d86de;box-shadow:0 0 0 3px #7961ce12}
select{cursor:pointer;padding-right:30px}
textarea{resize:vertical;line-height:1.65}
input[type="checkbox"],input[type="radio"]{accent-color:var(--purple);cursor:pointer}
:focus-visible{outline:3px solid #a894e5;outline-offset:4px}
main:focus,main:focus-visible,.answer-feedback:focus{outline:none}
::selection{background:#ddd1fa;color:#3b2b6a}
.icon{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0;vertical-align:middle}
.icon-sprite{position:absolute;width:0;height:0;overflow:hidden}
.skip-link{position:fixed;top:-80px;left:20px;z-index:100;background:var(--purple);padding:12px 20px;color:#fff;border-radius:10px}
.skip-link:focus{top:14px}
.sidebar{position:fixed;inset:0 auto 0 0;width:var(--sidebar);background:#fff;border-right:1px solid var(--border);padding:36px 19px 22px;display:flex;flex-direction:column;z-index:10}
.brand{display:flex;gap:10px;align-items:center;padding:0 9px;margin-bottom:48px;font:bold 21px/1.2 var(--display);letter-spacing:-1.1px;white-space:nowrap}
.brand-mark{display:flex;align-items:center;justify-content:center;width:36px;height:40px;border-radius:12px;background:var(--purple);color:#fff;transform:rotate(-7deg);box-shadow:0 3px 0 #e5dcf7}
.brand-mark .icon{width:25px;height:25px;fill:currentColor;stroke-width:1.2}
.brand-go{color:var(--purple);margin-left:3px}
.brand small{display:block;font:10px/1.5 var(--font);letter-spacing:1.4px;color:#6f6b7b;margin-top:7px}
.nav-group{display:flex;flex-direction:column;gap:7px}
.nav-item{display:flex;align-items:center;gap:13px;padding:12px 17px;min-height:48px;border-radius:11px;color:#6f6c7d;font-size:14px;font-weight:500;transition:background .15s,color .15s}
.nav-item:hover{background:#f6f3fc;color:var(--purple)}
.nav-item.active{color:var(--purple);background:#f0ebfb;font-weight:600}
.nav-dot{display:none;width:6px;height:6px;margin-left:auto;border-radius:50%;background:var(--purple)}
.active .nav-dot{display:block}
.nav-item .icon{width:20px;height:20px}
.teacher-nav{margin-top:32px;border-top:1px solid var(--border);padding-top:24px}
.nav-label{color:#6f6c78;font-size:11px;letter-spacing:1px;margin:0 17px 10px}
.sidebar-bottom{margin-top:auto;padding:50px 9px 0}
.side-note{position:relative;border-radius:14px;padding:20px 16px;background:#f8f6fc;overflow:hidden}
.side-note p{font-size:14px;font-weight:600;line-height:1.9;color:#716a80;position:relative}
.side-note small{display:block;color:#716b7e;font-size:10px;margin-top:8px;font-family:var(--display)}
.note-star{position:absolute;right:6px;top:-14px;font-size:66px;color:#e6def5;line-height:1;transform:rotate(15deg)}
.classroom-label{display:flex;align-items:center;justify-content:center;gap:7px;color:#706c79;font-size:10px;margin-top:24px;white-space:nowrap}
.classroom-label>span,.classroom-badge>span{width:6px;height:6px;background:#72ae91;border-radius:50%;display:inline-block;flex-shrink:0}
.workspace{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column}
.topbar{height:78px;flex-shrink:0;background:#fff;border-bottom:1px solid var(--border);padding:0 39px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.breadcrumb{display:flex;align-items:center;gap:15px;font-size:12px;color:#6f6b7a;white-space:nowrap}
.breadcrumb .icon{width:12px;height:12px;color:#6f6c74}
#page-label{color:#625b75;font-weight:500}
.mobile-brand{display:none}
.header-actions{display:flex;align-items:center;gap:10px}
.header-greeting{font:12px var(--display);color:#716c76;margin-right:14px}
.header-greeting>span{margin-left:7px}
.icon-button{display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;width:36px;height:36px;border-radius:9px;color:#716a81;transition:background .15s,color .15s}
.icon-button:hover{background:#f2edf9;color:var(--purple)}
.icon-button .icon{width:19px;height:19px}
.header-actions .icon-button{border:1px solid var(--border);background:#fff}
.header-actions .icon-button:hover{background:#f6f3fb}
main{width:100%;max-width:1232px;margin:0 auto;padding:32px 40px 0;flex:1}
.page-heading{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:26px}
.page-heading h1{font-size:25px;font-weight:700;letter-spacing:-.8px}
.page-heading p{font-size:12px;color:#6f6c79;margin-top:7px}
.classroom-badge{display:flex;align-items:center;gap:7px;font-size:10px;padding:7px 11px;background:#edf5f1;color:#587463;border-radius:6px;white-space:nowrap}
.hero{height:294px;border-radius:22px;background:#eee8f9;position:relative;overflow:hidden;display:flex;align-items:center}
.hero-copy{position:relative;z-index:1;padding:25px 36px;flex:0 0 48%}
.hero-kicker{display:inline-block;font-size:10px;font-weight:600;color:#76659a;background:#ffffff80;border:1px solid #ffffffa3;padding:4px 10px;border-radius:6px;letter-spacing:.6px}
.hero h2{font-size:38px;line-height:1.45;letter-spacing:1px;margin:12px 0 10px;color:#49395f;font-weight:800}
.hero-copy>p{font-size:12px;line-height:1.95;color:#766886}
.hero-link{display:inline-flex;align-items:center;gap:8px;background:white;border-radius:8px;padding:8px 14px;color:#7c5faf;font-size:11px;font-weight:600;margin-top:16px;box-shadow:0 3px 0 #e3d9f2}
.hero-link .icon{width:16px;height:16px}
.hero-link .icon:last-child{margin-left:10px;width:15px}
.hero-link:hover{background:#fcfaff;transform:translateY(-1px)}
.hero-art{max-height:calc(100% - 25px);width:50%;max-width:480px;position:absolute;right:12px;bottom:12px;height:auto}
.hero-caption{position:absolute;right:43px;bottom:8px;font:9px var(--display);color:#a493bd;letter-spacing:.4px}
.home-grid{display:grid;grid-template-columns:minmax(0,1.43fr) minmax(0,1fr);gap:23px;margin-top:24px}
.panel{background:#fff;border:1px solid var(--border);border-radius:var(--radius)}
.start-panel{padding:23px 25px 19px}
.section-heading{display:flex;align-items:center;gap:11px;margin-bottom:21px}
.section-heading>div{min-width:0}
.section-heading h2{font-size:16px;font-weight:650;letter-spacing:.1px}
.section-heading p{font-size:11px;color:#716c78;margin-top:3px}
.section-heading>.button,.section-heading>.icon-button,.section-heading>.checkbox-label{margin-left:auto;flex-shrink:0}
.section-icon{width:37px;height:37px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}
.section-icon .icon{width:20px;height:20px}
.peach{background:#fff0e4;color:#8d6540}
.yellow{background:#fff6df;color:#816b32}
.lavender{background:#eee9fa;color:#7564a0}
.mint{background:#e9f5ef;color:#4b7665}
.tiny-star{color:#cebedf;font-size:31px;line-height:1;margin-left:auto;transform:rotate(8deg)}
.form-row{display:flex;gap:16px}
.form-row>.field{flex:1;min-width:0}
.field{display:block;font-size:12px;font-weight:500;color:#615a71}
.field>input,.field>select,.field>textarea{display:block;width:100%;margin-top:8px;font-weight:400;font-size:12px}
.field+.field{margin-top:18px}
.form-row>.field+.field{margin-top:0}
.field .optional,.optional{font-size:10px;font-weight:400;color:#706c77;margin-left:4px}
.required{font-size:10px;color:#746888}
.avatar-row{display:flex;align-items:center;gap:18px;margin:17px 0 16px}
.avatar-row>span{color:#716c79;font-size:10px}
.avatar-options{display:flex;gap:10px}
.avatar-option{position:relative;display:flex;cursor:pointer}
.avatar-option input{position:absolute;opacity:0;width:1px;height:1px}
.avatar-option>span{display:flex;width:36px;height:36px;align-items:center;justify-content:center;border:1.5px solid transparent;border-radius:50%;font-size:21px;background:#f7f6fa;transition:transform .15s,border-color .15s}
.avatar-option input:checked+span{border-color:#a78bd9;background:#f1eafb;transform:translateY(-1px);box-shadow:0 0 0 3px #f6f1fc}
.avatar-option input:focus-visible+span{outline:3px solid #a894e5;outline-offset:3px}
.avatar-option:hover>span{transform:translateY(-2px)}
.round-facts{display:flex;gap:17px;align-items:center;justify-content:center;border-radius:8px;background:#f9f8fc;padding:10px 5px;color:#716b7d;font-size:10px}
.round-facts>span{display:inline-flex;align-items:center;gap:5px;white-space:nowrap}
.round-facts .icon{width:13px;height:13px;color:#736986}
.round-facts b{font-weight:600;color:#776789}
.button{display:inline-flex;gap:9px;align-items:center;justify-content:center;min-height:44px;padding:11px 20px;border-radius:10px;font-size:13px;font-weight:600;line-height:1.5;transition:background .15s,transform .15s;white-space:nowrap}
.button .icon{width:18px;height:18px}
.button.primary{background:var(--purple);color:#fff;box-shadow:0 3px 0 #6650b6}
.button.primary:hover:not(:disabled){background:var(--purple-dark);transform:translateY(-1px)}
.button.primary:active:not(:disabled){transform:translateY(2px);box-shadow:none}
.button.secondary{border:1px solid #e2d9f2;background:#fff;color:#786690}
.button.secondary:hover{background:#f8f5fc}
.button.subtle{background:#f6f3fb;color:#756886}
.button.subtle:hover{background:#ece5f7}
.button.small{font-size:11px;min-height:36px;padding:8px 13px;border-radius:8px}
.full-width{width:100%}
.start-button{width:100%;margin-top:13px;font-size:13px;letter-spacing:1px;position:relative;height:45px}
.start-button .icon{position:absolute;right:18px}
.form-footnote{color:#716c78;font-size:10px;text-align:center;margin-top:12px}
.form-error{font-size:12px;color:#a65845;margin-top:9px;line-height:1.6}
.form-error:empty{display:none}
.resume-button{margin-top:14px;display:flex;align-items:center;gap:7px;font-size:10px;color:var(--purple);padding:9px 0 0;border-top:1px dashed var(--border);width:100%}
.resume-button .icon{width:14px;height:14px}
.resume-button .icon:last-child{margin-left:auto}
.mini-board{padding:23px 23px 0;display:flex;flex-direction:column;overflow:hidden}
.mini-board .section-heading{margin-bottom:11px}
.mini-board .section-heading h2{font-size:14px}
.mini-board .section-heading p{font-size:10px}
.mini-board .section-heading>.icon-button{width:25px}
.home-board{flex:1;display:flex;flex-direction:column;justify-content:center;min-height:181px}
.mini-empty{text-align:center;padding:5px 0 14px}
.empty-trophy{position:relative;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;width:73px;height:73px;background:#fcf6e7;color:#7d6c45;margin:7px auto 10px}
.empty-trophy>.icon{width:34px;height:34px;stroke-width:1.3}
.empty-trophy>span{position:absolute;right:-10px;top:4px;color:#dfc487;font-size:20px;transform:rotate(12deg)}
.empty-trophy>i{position:absolute;left:-14px;bottom:5px;color:#bbaaD8;font-style:normal;font-size:25px}
.mini-empty h3{font-size:12px;color:#736982;font-weight:500;margin-top:1px}
.mini-empty p{font-size:10px;color:#716b77;margin-top:7px}
.board-link{display:flex;align-items:center;justify-content:center;gap:10px;margin:12px -23px 0;padding:12px 10px;border-top:1px solid #f1edf5;background:#fdfcfe;color:#736a7e;font-size:10px}
.board-link .icon{width:13px;height:13px}
.board-link:hover{background:#f7f3fc;color:var(--purple)}
.mini-rank-row{display:flex;align-items:center;gap:9px;padding:12px 0}
.mini-rank-row+.mini-rank-row{border-top:1px dashed var(--border)}
.rank-number{display:inline-flex;align-items:center;justify-content:center;width:28px;color:#706c78;font:600 13px var(--display)}
.rank-1,.rank-2,.rank-3{font-size:24px}
.student-avatar{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;background:#f4f1fa;border-radius:50%;font-size:19px;flex-shrink:0}
.rank-student{display:flex;flex-direction:column;gap:2px;min-width:0}
.rank-student b{font-size:11px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:130px}
.rank-student small{font-size:10px;color:#716c78}
.mini-rank-row>strong{margin-left:auto;font:700 17px var(--display);color:#776498;white-space:nowrap}
.mini-rank-row>strong small{font:10px var(--font)}
.warmup-strip{display:flex;align-items:center;gap:26px;padding:23px 25px;border:1px solid var(--border);border-radius:15px;margin-top:23px;background:#fff}
.warmup-title{display:flex;align-items:center;gap:11px;min-width:170px}
.warmup-title h3{font-size:12px;letter-spacing:0}
.warmup-title p{font-size:10px;color:#716b79;margin-top:3px}
.warmup-title .section-icon{width:35px;height:35px}
.warmup-rule{padding-left:24px;border-left:1px solid var(--border);flex:1;white-space:nowrap}
.warmup-rule>span{font-size:10px;color:#726a7d}
.warmup-rule p{font:14px/1.6 var(--display);color:#726b7c;margin-top:4px}
.warmup-rule p>span{padding:0 7px;color:#716a7e}
.warmup-rule b{color:#786596}
.text-link{display:inline-flex;align-items:center;gap:7px;color:#756889;font-size:11px}
.text-link:hover{color:var(--purple)}
.text-link .icon{width:16px;height:16px}
.warmup-strip>.text-link{font-size:10px;white-space:nowrap}
.page-footer{width:100%;max-width:1232px;margin:0 auto;padding:26px 40px 20px;display:flex;justify-content:space-between;gap:16px;font:9px var(--display);color:#706b77}
.page-footer>span:first-child{font-family:var(--font)}
.footer-sep{color:#d4ccde;margin:0 9px}
.loading-state{min-height:65vh;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:20px;color:#736a7f;font-size:13px}
.loader{display:block;width:25px;height:25px;margin:15px auto;border:2px solid #e3dbef;border-top-color:var(--purple);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.inline-error{font-size:12px;color:#8b6650;text-align:center;padding:20px}
.play-top{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:25px}
.play-top>span{color:#746a7a;font-size:12px}
.player-pill{display:flex;align-items:center;gap:9px;background:#fff;border:1px solid var(--border);padding:6px 13px 6px 7px;border-radius:30px;font-size:12px;max-width:230px;overflow-wrap:anywhere}
.player-pill>span{width:30px;height:30px;background:#f1eafb;border-radius:50%;display:grid;place-items:center;font-size:18px;flex-shrink:0}
.game-panel{max-width:870px;margin:0 auto;border:1px solid var(--border);background:#fff;border-radius:24px;padding:30px 42px}
.game-status{display:flex;justify-content:space-between;align-items:center}
.eyebrow{display:block;font-size:10px;color:#756a80;margin-bottom:3px}
.question-counter{font:700 29px var(--display);color:#796785}
.question-counter>span{font-size:15px;font-weight:400;color:#726b78}
.score-pill{border-radius:12px;padding:7px 15px;background:#fff6df;color:#7e6c38;display:flex;align-items:center;gap:7px}
.score-pill>.icon{fill:#eed383;color:#7f6c38;width:21px;height:21px}
.score-pill>b{font:700 24px var(--display)}
.score-pill>span{font-size:11px}
.progress-track{height:7px;border-radius:8px;background:#f0ebf6;margin:22px 0 31px;overflow:hidden}
.progress-track>span{height:100%;display:block;background:#b29adc;border-radius:8px;transition:width .3s}
.question-heading{display:flex;justify-content:space-between;align-items:center;gap:15px}
.question-heading>span:last-child{font-size:11px;color:#746a7c}
.topic-tag{display:inline-flex;align-items:center;justify-content:center;background:#f1ecfa;color:#796596;font-size:10px;padding:4px 9px;border-radius:5px;font-weight:500;white-space:nowrap}
.topic-tag.comparative{color:#796596;background:#f1ecfa}
.topic-tag.superlative{color:#856846;background:#fcf2e5}
.question-sentence{font:700 30px/1.7 var(--display);color:#50415f;margin:34px auto 36px;max-width:710px;text-align:center;letter-spacing:-.3px;overflow-wrap:anywhere}
.question-blank{display:inline-flex;align-items:center;justify-content:center;min-width:100px;margin:0 6px;border-bottom:3px solid #b5a0d5;border-radius:5px;background:#f5f0fc;color:#76688b;line-height:1.25;padding:2px 18px;font-size:25px}
.answer-options{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.answer-option{display:flex;align-items:center;gap:15px;text-align:left;border:1.5px solid #eae3f0;border-radius:12px;min-height:76px;padding:15px 18px;font:600 19px var(--display);color:#776885;transition:background .15s,border-color .15s,transform .15s;overflow-wrap:anywhere}
.answer-option>.icon{width:21px;height:21px;margin-left:auto}
.answer-option>span:nth-child(2){min-width:0}
.answer-option:hover:not(:disabled){background:#fbf8ff;border-color:#bdabdb;transform:translateY(-1px)}
.option-letter{width:32px;height:32px;border-radius:8px;background:#f6f3fa;display:grid;place-items:center;font-size:13px;color:#766980;flex-shrink:0}
.option-circle{width:18px;height:18px;border:1.5px solid #e7dfef;border-radius:50%;margin-left:auto;flex-shrink:0}
.answer-option.selected{background:#f5efff;border-color:#a183d0;color:#7f5ead;box-shadow:0 0 0 2px #f3eefc}
.answer-option.selected .option-letter{background:#ae90d8;color:#fff}
.answer-option.selected .option-circle{border:5px solid #a489ce;background:#fff}
.answer-option:disabled{opacity:1;cursor:default}
.answer-option.correct{border-color:#83b598;background:#f0f9f3;color:#517660}
.answer-option.correct .option-letter{background:#8fbf9f;color:#fff}
.answer-option.incorrect{border-color:#e4b582;background:#fff8ec;color:#856943}
.answer-option.incorrect .option-letter{background:#e0b883;color:#fff}
.keyboard-hint{text-align:center;color:#736a79;font-size:10px;margin-top:22px}
.answer-feedback{display:flex;gap:18px;align-items:flex-start;border-radius:12px;padding:20px 22px;margin-top:24px;border:1px solid transparent}
.answer-feedback.positive{background:#f1f8f2;border-color:#e4f1e6}
.answer-feedback.encouraging{background:#fffaed;border-color:#f6eacb}
.feedback-emoji{font-size:41px;line-height:1.25;flex-shrink:0;animation:thumb-pop .4s ease-out}
@keyframes thumb-pop{0%{transform:scale(.4) rotate(-20deg)}70%{transform:scale(1.2) rotate(12deg)}100%{transform:scale(1)}}
.answer-feedback h2{font-size:16px;color:#59745d;line-height:1.6}
.answer-feedback h2>span{font-size:11px;margin-left:12px;color:#637255}
.answer-feedback.encouraging h2{color:#7d6c48}
.answer-feedback p{font-size:12px;line-height:1.85;color:#6f6e5f;white-space:pre-line;overflow-wrap:anywhere}
.answer-feedback .correct-usage{margin:6px 0 4px;color:#6d7060}
.correct-usage strong{font:700 17px var(--display);color:#5c745f}
.game-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:27px;border-top:1px solid var(--border);padding-top:22px}
.game-bottom>span{font-size:11px;color:#726a79}
.game-bottom .button{min-width:173px}
.save-note{display:flex;align-items:center;justify-content:center;gap:7px;font-size:10px;color:#726b7a;margin:21px 0 10px;text-align:center}
.save-note .icon{width:14px;height:14px}
.result-hero{position:relative;text-align:center;padding:18px 20px 36px}
.result-medal{width:97px;height:97px;background:#fff1cf;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;position:relative;color:#826a32;border:7px solid #fff7e6}
.result-medal>.icon{width:44px;height:44px;stroke-width:1.5}
.result-medal>span{position:absolute;top:0;right:-35px;color:#ac8acd;font-size:36px;line-height:1;transform:rotate(10deg)}
.result-medal>i{position:absolute;bottom:0;left:-27px;color:#d9b963;font-style:normal;font-size:28px}
.completion-pill{display:inline-flex;gap:6px;align-items:center;color:#627162;font-size:10px;background:#edf5eb;padding:5px 11px;border-radius:20px}
.completion-pill .icon{width:13px;height:13px}
.result-hero h1{font-size:29px;letter-spacing:.2px;margin:17px 0 8px;color:#6b577c}
.result-hero>p{font-size:12px;color:#76697d}
.result-score{font:700 68px/1.2 var(--display);color:#7c62a3;margin:15px 0 20px}
.result-score>span{font:14px var(--font);color:#736a7b}
.result-stats{display:flex;justify-content:center;max-width:490px;margin:0 auto 25px}
.result-stats>div{flex:1;display:flex;flex-direction:column;gap:6px}
.result-stats>div+div{border-left:1px solid #e9e1ee}
.result-stats strong{font:700 23px var(--display);color:#796787}
.result-stats strong>span{font-size:14px;font-weight:400;color:#756a7e}
.result-stats small{font-size:10px;color:#746a7c}
.result-actions{display:flex;justify-content:center;align-items:center;gap:15px}
.result-actions>.text-link{margin-left:8px}
.review-panel{padding:24px 28px;margin-bottom:8px}
.checkbox-label{display:flex;align-items:center;gap:7px;white-space:nowrap;font-size:11px;color:#766980}
.checkbox-label input{width:15px;height:15px;margin:0}
.review-item{border-top:1px solid var(--border)}
.review-item summary{cursor:pointer;display:flex;align-items:center;gap:12px;padding:18px 0;list-style:none}
.review-item summary::-webkit-details-marker{display:none}
.review-item summary>.icon{margin-left:auto;width:17px;height:17px;color:#736b7b;transition:transform .15s}
.review-item[open] summary>.icon{transform:rotate(90deg)}
.review-icon{display:grid;place-items:center;width:27px;height:27px;border-radius:7px;flex-shrink:0}
.review-icon .icon{width:15px;height:15px}
.review-icon.good{color:#607262;background:#f0f6ee}
.review-icon.learn{color:#806a4d;background:#fcf4e5}
.review-prompt{font:14px/1.7 var(--display);color:#796881;overflow-wrap:anywhere}
.review-prompt>strong{color:#756887;background:#f4f0f8;padding:2px 5px;border-radius:3px}
.review-content{padding:0 15px 18px 39px;font-size:12px;color:#76697c;line-height:1.9;white-space:pre-line;overflow-wrap:anywhere}
.review-content>p+p{margin-top:5px}
.review-correct{margin-left:23px}
.correct-text,.review-correct b{color:#61725e}
.wrong-text{color:#826a47}
.review-empty{text-align:center;padding:30px 20px}
.review-empty>span{font-size:32px}
.review-empty h3{font-size:14px;color:#786783;margin-top:7px}
.review-empty p{font-size:12px;color:#746a7c;margin-top:7px}
.page-doodle{font-size:37px;transform:rotate(-12deg);padding-right:12px}
.leaderboard-banner{border-radius:20px;background:#eee7fa;padding:30px 34px;display:flex;justify-content:space-between;align-items:center;margin-bottom:23px;overflow:hidden}
.leaderboard-banner .topic-tag{background:#ffffff9e;color:#78678d;font-size:10px}
.leaderboard-banner h2{font-size:30px;color:#70578c;letter-spacing:.4px;margin:12px 0 8px}
.leaderboard-banner p{font-size:12px;color:#776881}
.banner-stars{position:relative;font-size:112px;color:#ceb4e8;line-height:1;margin:0 55px 0 30px;transform:rotate(10deg)}
.banner-stars>span{position:absolute;right:-45px;top:-5px;color:#b8a0ce;font-size:42px}
.banner-stars>i{position:absolute;left:-27px;bottom:-9px;color:#f1d086;font-style:normal;font-size:54px}
.ranking-panel{overflow:hidden}
.table-toolbar{display:flex;align-items:center;gap:14px;padding:20px 24px;border-bottom:1px solid var(--border)}
.table-toolbar>.button{margin-left:auto}
.filter-group{display:flex;gap:17px;align-items:center}
.filter-group>label{display:flex;align-items:center;gap:9px;color:#77687f;font-size:11px}
.filter-group select,.table-toolbar>select{font-size:11px;border-color:#ebe4f1;padding:8px 28px 8px 11px;color:#786882;background:#fefcfe}
.podium{display:flex;align-items:flex-end;justify-content:center;gap:22px;max-width:640px;margin:37px auto 20px;padding:0 20px}
.podium-player{flex:1;min-width:0;display:flex;flex-direction:column;align-items:center;text-align:center}
.podium-avatar{width:55px;height:55px;position:relative;display:grid;place-items:center;border-radius:50%;background:#f7f1fc;font-size:31px;margin-bottom:11px}
.podium-player>b{font-size:13px;color:#7b6686;max-width:100%;overflow-wrap:anywhere}
.podium-player>small{font-size:10px;color:#76697d;margin-top:3px;margin-bottom:13px}
.podium-crown{position:absolute;top:-22px;font-size:25px;transform:rotate(-8deg)}
.podium-step{width:100%;height:96px;background:#f3eefb;border-radius:12px 12px 0 0;display:flex;align-items:center;justify-content:center;flex-direction:column;color:#796885}
.podium-step>span{font-size:24px;line-height:1.3}
.podium-step>strong{font:700 25px var(--display);margin-top:6px}
.podium-step small{font:10px var(--font)}
.podium-0 .podium-step{height:121px;background:#fff3d8;color:#816a42}
.podium-0 .podium-avatar{background:#fff5e6;border:2px solid #f4dfb3}
.podium-2 .podium-step{height:76px;background:#fcefe7;color:#816959}
.table-scroll{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}
table{width:100%;border-collapse:collapse;text-align:left}
th{font-size:10px;font-weight:500;color:#766981;background:#fcfafe;padding:12px 21px;white-space:nowrap;border-bottom:1px solid var(--border)}
td{padding:15px 21px;border-bottom:1px solid #f3eef7;font-size:12px;color:#796785}
tbody tr:last-child td{border-bottom:0}
.table-student{display:flex;align-items:center;gap:11px;min-width:130px}
.table-student b{font-size:12px;font-weight:500;color:#7b6688;overflow-wrap:anywhere}
.table-student small{display:block;font-size:10px;color:#77697f;margin-top:3px}
.table-score{font:700 20px var(--display);color:#7f6395;white-space:nowrap}
.table-score small{font:10px var(--font)}
.muted{color:#746a7c;font-size:11px}
.my-ranking{background:#faf6ff}
.table-note{display:flex;align-items:flex-start;gap:7px;background:#fdfafe;color:#74697d;font-size:10px;padding:15px 23px;border-top:1px solid var(--border)}
.table-note .icon{width:14px;height:14px;margin-top:1px}
.empty-state{display:flex;align-items:center;flex-direction:column;text-align:center;padding:57px 25px 62px;gap:12px}
.empty-state h2{font-size:19px;color:#7c658c}
.empty-state h3{font-size:14px;color:#7c658c}
.empty-state p{font-size:12px;color:#766981;max-width:480px}
.empty-state .button{margin-top:12px}
.empty-trophy.large{width:96px;height:96px;margin-top:0}
.empty-trophy.large>.icon{width:43px;height:43px}
.empty-state.compact{padding:37px 20px;gap:7px}
.empty-emoji{font-size:36px}
.page-error{padding-top:14vh}
.page-error h1{font-size:25px}
.tips-intro{display:grid;grid-template-columns:1fr 1fr;gap:23px;margin-bottom:25px}
.concept{position:relative;padding:27px;border-radius:18px;border:1px solid #eae1f5;background:#f4effb;overflow:hidden}
.superlative-concept{background:#fff6e8;border-color:#f7ead4}
.concept h2{font-size:20px;color:#7f648e;margin-top:17px}
.superlative-concept h2{color:#7f6b51}
.concept>p{font-size:12px;color:#796881;margin:8px 0 20px}
.superlative-concept>p{color:#7c6b53}
.concept-symbol{position:absolute;right:18px;top:15px;font-size:55px;line-height:1;color:#d3c1e4;transform:rotate(8deg)}
.superlative-concept .concept-symbol{color:#eed9ad}
.example{font:15px/1.8 var(--display);color:#786782;background:#ffffff91;border-radius:8px;padding:12px 14px;position:relative}
.example strong{color:#7d6493}
.superlative-concept .example strong{color:#826a44}
.concept>small{display:block;font-size:10px;color:#766a7d;margin:10px 0 0 3px}
.grammar-table-panel{padding:24px 0 0;overflow:hidden}
.grammar-table-panel>.section-heading{padding:0 25px}
.grammar-table td{padding:18px 24px;font:14px var(--display);white-space:nowrap}
.grammar-table td:first-child{font:11px var(--font);min-width:210px;white-space:normal}
.grammar-table td:first-child b{color:#7a6786;font-size:12px}
.grammar-table small{display:block;font-size:10px;color:#76697f;margin-top:5px}
.grammar-table td:nth-child(3){color:#7f638f}
.grammar-table td:nth-child(4){color:#826949}
.remember-note{display:flex;gap:16px;background:#f6f1fb;border:1px dashed #e5d8ef;border-radius:15px;padding:22px 27px;margin-top:24px}
.remember-note>span{font-size:24px}
.remember-note h3{font-size:13px;color:#796785;margin-bottom:8px}
.remember-note p{font-size:11px;line-height:2;color:#776881}
.remember-note b{color:#7a6688;font-weight:500}
.remember-note s{color:#7d6968}
.bank-stats{display:flex;align-items:center;gap:29px;padding:23px 26px;background:#fff;border:1px solid var(--border);border-radius:17px;margin-bottom:23px}
.bank-stats>div{display:flex;gap:12px;align-items:center;color:#776881;font-size:11px;white-space:nowrap}
.bank-stats>div+div{padding-left:27px;border-left:1px solid var(--border)}
.bank-stats b{font:700 23px var(--display);color:#7a6689;margin-right:5px}
.bank-stats small{display:block;font-size:10px;color:#75697d;margin-top:1px}
.stat-dot{display:block;width:10px;height:10px;border-radius:50%;background:#d2b8e5}
.stat-dot.orange{background:#e3c49e}
.enabled-summary{margin-left:auto;color:#67715e;font-size:10px;background:#f3f8ec;padding:5px 9px;border-radius:5px;white-space:nowrap}
.question-bank{overflow:hidden}
.search-field{display:flex;align-items:center;position:relative;max-width:350px;flex:1}
.search-field>.icon{position:absolute;left:12px;width:16px;height:16px;color:#75697f}
.search-field input{width:100%;padding:9px 12px 9px 36px;font-size:11px;border-color:#eae3f1}
.bank-table td:first-child{display:flex;align-items:flex-start;gap:16px;max-width:530px}
.question-id{font:11px var(--display);color:#75697f;padding-top:3px;flex-shrink:0}
.bank-table td:first-child b{font:13px/1.7 var(--display);color:#7c658b;display:block;min-width:220px;overflow-wrap:anywhere}
.bank-table td:first-child small{display:block;font-size:10px;color:#736a7d;margin-top:6px}
.bank-table td:first-child small span{color:#756984}
.table-actions{display:flex;gap:4px}
.table-actions .icon-button{width:30px;height:30px}
.table-actions .icon{width:15px;height:15px}
.danger-icon{color:#776a6a}
.danger-icon:hover{background:#fcf1ed;color:#906258}
.status-tag{display:flex;align-items:center;gap:5px;color:#746b78;font-size:10px;white-space:nowrap}
.status-tag i{width:5px;height:5px;border-radius:50%;background:currentColor}
.status-tag.enabled{color:#63725f}
.pagination{display:flex;align-items:center;justify-content:space-between;gap:16px;border-top:1px solid var(--border);padding:14px 24px;color:#75697d;font-size:10px}
.pagination>div{display:flex;align-items:center;gap:13px}
.pagination .icon-button{width:28px;height:28px;border:1px solid #eee6f5;border-radius:6px}
.pagination .icon{width:14px;height:14px}
.settings-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:23px;margin-bottom:25px}
.settings-panel{padding:26px 29px}
.settings-panel .section-heading{margin-bottom:27px}
.count-input{display:flex;align-items:center;gap:10px;margin-top:9px;font-size:11px;color:#796785}
.count-input>input{width:105px;font:700 23px var(--display);color:#7e6391;padding:9px 13px}
.count-presets{display:flex;gap:8px;margin:13px 0 10px;flex-wrap:wrap}
.preset{border:1px solid #ede6f4;border-radius:7px;padding:5px 11px;color:#776981;font-size:10px}
.preset.active{background:#f4edfd;border-color:#cebae6;color:#7b658d}
.field-hint{font-size:10px;color:#76697f}
.setting-row{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:24px 0;margin-top:23px;border-top:1px solid var(--border)}
.setting-row h3{font-size:12px;letter-spacing:0;color:#7a6687}
.setting-row p{font-size:10px;color:#76697f;margin-top:5px}
.switch{position:relative;display:block;width:39px;height:23px;flex-shrink:0}
.switch input{position:absolute;opacity:0;width:1px;height:1px}
.switch>span{position:absolute;inset:0;border-radius:15px;background:#ddd2e7;cursor:pointer;transition:background .15s}
.switch>span:after{content:"";position:absolute;left:3px;top:3px;width:17px;height:17px;border-radius:50%;background:#fff;transition:transform .15s}
.switch input:checked+span{background:#b295ce}
.switch input:checked+span:after{transform:translateX(16px)}
.switch input:focus-visible+span{outline:3px solid #a894e5;outline-offset:3px}
.settings-summary{position:relative;background:#f0eafa;border:1px solid #e7def2;border-radius:20px;padding:35px 29px;display:flex;flex-direction:column;overflow:hidden}
.summary-spark{position:absolute;right:18px;top:9px;color:#dfcfee;font-size:90px;line-height:1;transform:rotate(12deg)}
.settings-summary h2{font-size:17px;color:#7d658e;position:relative;margin-bottom:25px}
.summary-score{display:flex;align-items:baseline;gap:11px}
.summary-score>b{font:700 61px var(--display);color:#7b658e}
.summary-score>span{font-size:12px;color:#786883}
.settings-summary>p{font-size:12px;line-height:2;color:#796785;margin-top:17px}
.summary-note{font-size:10px;color:#776881;line-height:2;border-top:1px solid #e2d4ef;padding-top:20px;margin-top:auto}
.summary-note .icon{width:13px;height:13px;margin-right:4px}
.records-panel{overflow:hidden;padding-top:23px}
.records-panel>.section-heading{padding:0 24px}
.records-table td{font-size:11px}
.records-table td:first-child{max-width:170px;overflow-wrap:anywhere}
.records-table .table-score{font:700 19px var(--display)}
dialog{border:1px solid #eee5f5;border-radius:23px;background:#fff;padding:35px;max-width:min(450px,calc(100vw - 30px));width:450px;max-height:calc(100dvh - 40px);color:var(--ink);box-shadow:0 24px 90px #38214722;overflow-y:auto}
dialog::backdrop{background:#37244655;backdrop-filter:blur(5px)}
dialog.wide{width:620px;max-width:min(620px,calc(100vw - 30px))}
.modal-close{position:absolute;right:14px;top:13px}
.modal-emblem{display:flex;align-items:center;justify-content:center;width:49px;height:49px;border-radius:14px;margin-bottom:20px}
.modal-emblem>.icon{width:25px;height:25px}
dialog h2{font-size:23px;color:#7e6491;margin-top:1px;padding-right:10px}
.modal-subtitle{font-size:12px;color:#766881;margin:9px 0 26px}
#login-form .field{margin-bottom:22px}
#login-form .field input{font-size:13px;padding:13px}
#login-form .form-error{margin-top:-8px;margin-bottom:14px}
.modal-footnote{font-size:10px;color:#75697f;line-height:1.8;margin-top:20px;text-align:center}
.help-steps{list-style:none;margin:25px 0;padding:0;display:flex;flex-direction:column;gap:22px}
.help-steps>li{display:flex;align-items:flex-start;gap:15px}
.help-steps>li>span{display:grid;place-items:center;flex-shrink:0;width:29px;height:29px;background:#f0e8fa;color:#786786;border-radius:9px;font:700 14px var(--display)}
.help-steps h3{font-size:13px;color:#7a6787;letter-spacing:0}
.help-steps p{font-size:11px;line-height:1.9;color:#75697e;margin-top:4px}
.help-teacher{background:#f9f5fc;border-radius:10px;padding:14px;font-size:10px;line-height:1.9;color:#76687f;margin:24px 0 22px}
.help-teacher .icon{width:14px;height:14px;color:#796787;margin-right:4px}
#question-form .form-row{margin-bottom:20px}
.question-enabled{align-self:flex-end;padding-bottom:12px;margin-left:10px}
.option-editor{border:0;padding:0;margin:22px 0;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.option-editor legend{font-size:12px;color:#7a6689;margin-bottom:11px}
.option-editor legend>span{font-size:10px;color:#77687f;margin-left:8px}
.option-editor>div{display:flex;align-items:center;gap:9px}
.option-editor>div>input{width:100%;font:13px var(--display);padding:11px}
.answer-radio{display:flex;align-items:center;gap:5px;font:12px var(--display);color:#776783;cursor:pointer}
.answer-radio>input{width:15px;height:15px;padding:0;margin:0}
.modal-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:24px}
#toast{position:fixed;bottom:27px;left:calc(50% + var(--sidebar)/2);transform:translate(-50%,15px);background:#6f548b;color:#fff;border-radius:11px;padding:12px 21px;font-size:12px;max-width:calc(100vw - 30px);box-shadow:0 6px 30px #4c315628;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:100;min-width:220px;text-align:center}
#toast.visible{opacity:1;transform:translate(-50%,0)}
#toast.error{background:#a97c67}
#confetti{position:fixed;inset:0;pointer-events:none;z-index:90;overflow:hidden}
#confetti>i{position:absolute;top:25%;left:var(--x);width:9px;height:14px;background:var(--color);border-radius:2px;opacity:0;animation:confetti 1.8s var(--delay) ease-out forwards}
#confetti>i:nth-child(3n){width:9px;height:9px;border-radius:50%}
@keyframes confetti{0%{opacity:0;transform:translate(0,-40px) rotate(0)}10%{opacity:1}80%{opacity:.8}100%{opacity:0;transform:translate(var(--drift),450px) rotate(var(--turn))}}
@media(min-width:1500px){:root{--sidebar:245px}.sidebar{padding-top:40px}.brand{font-size:23px}.brand-mark{width:39px;height:44px}.topbar{height:85px}main{padding-top:36px}.hero{height:320px}.hero h2{font-size:42px}.hero-copy{padding-left:41px}.hero-art{width:49%;right:30px;bottom:13px;max-width:515px}.start-panel,.mini-board{padding-top:27px}.home-grid{gap:26px}.start-panel{padding-left:28px;padding-right:28px}.field>input{padding:13px 15px}.avatar-row{margin-top:21px;margin-bottom:20px}.hero-copy>p{font-size:13px}.hero-link{margin-top:18px;padding:9px 15px}.warmup-strip{padding-top:26px;padding-bottom:26px}}
@media(max-width:1180px){:root{--sidebar:200px}.sidebar{padding-left:12px;padding-right:12px}.brand{font-size:19px;padding-left:7px;gap:7px}.brand-mark{width:31px;height:35px}.brand small{font-size:10px;letter-spacing:1px}.nav-item{padding-left:16px;font-size:13px}.topbar{padding:0 26px}.header-greeting{display:none}main{padding:27px 26px 0}.page-footer{padding-left:26px;padding-right:26px}.hero-copy{padding-left:28px;flex-basis:52%}.hero h2{font-size:34px}.hero-art{width:49%;right:-1px;bottom:26px}.hero-caption{right:23px;bottom:15px}.home-grid{gap:18px;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr)}.start-panel{padding:21px 20px 18px}.mini-board{padding:21px 18px 0}.mini-board .section-heading{gap:8px}.mini-board .section-heading h2{font-size:12px}.mini-board .section-icon{width:32px;height:32px}.mini-board .section-heading p{font-size:9px}.form-row{gap:12px}.round-facts{gap:10px;font-size:9px}.round-facts .icon{width:12px;height:12px}.board-link{margin-left:-18px;margin-right:-18px}.warmup-strip{gap:17px;padding:20px}.warmup-title{min-width:150px}.warmup-rule{padding-left:17px}.warmup-strip>.text-link{font-size:0;gap:0}.warmup-strip>.text-link>.icon{width:18px;height:18px}.settings-grid{grid-template-columns:1.5fr 1fr}.bank-stats{gap:19px;padding:20px}.bank-stats>div+div{padding-left:19px}.enabled-summary{display:none}.game-panel{padding:28px 30px}.question-sentence{font-size:27px}.question-heading>span:last-child{font-size:10px}.table-toolbar{padding:17px 19px}.filter-group{gap:12px}.filter-group>label{font-size:10px;gap:7px}}
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