[hidden]{display:none!important}.sub-hero{background:var(--navy);color:#fff;padding:88px 0 96px}.sub-hero h1{font:400 clamp(46px,6vw,82px)/1.05 var(--serif);letter-spacing:-.055em;max-width:900px;margin:0}.sub-hero p:not(.eyebrow){font-size:17px;line-height:1.7;color:#c4d0d5;max-width:620px;margin:25px 0 0}.sub-hero .eyebrow a{text-decoration:underline;text-underline-offset:4px}.sub-actions{display:flex;align-items:center;gap:25px;margin-top:32px}.course-detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:100px;align-items:start}.course-detail-grid h2,.quiz-layout h2,.narrow>h2{font:400 clamp(38px,4vw,57px)/1.13 var(--serif);letter-spacing:-.05em;margin:0}.detail-level{color:#a56d52;font-size:13px;font-weight:800;margin-top:25px}.topic-list{list-style:none;padding:0;margin:0}.topic-list li{border-top:1px solid var(--line);padding:20px 0;font-size:16px}.topic-list li:before{content:'↗';color:var(--copper);margin-right:18px}.detail-band{background:#eae8e0}.detail-copy{font-size:17px;line-height:1.8;color:#5c6870;max-width:650px;margin:0 0 28px}.narrow{max-width:790px}.faq{border-top:1px solid var(--line)}.faq:last-of-type{border-bottom:1px solid var(--line)}.faq summary{cursor:pointer;padding:19px 0;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:20px}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:'+';font-size:23px;font-weight:400;color:var(--copper)}.faq[open] summary:after{content:'−'}.faq p{color:#667078;line-height:1.7;margin:0 0 20px}.detail-cta{background:var(--navy);color:#fff;padding:30px;margin-top:35px;display:flex;justify-content:space-between;align-items:center;gap:20px}.detail-cta p{margin:0;font:400 23px var(--serif)}.button-dark{background:var(--navy);color:#fff}.detail-cta .button-dark{background:#f7f5f0;color:var(--navy)}.feature-card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}.feature-card{display:flex;flex-direction:column;min-height:320px;padding:26px;background:#fff;border:1px solid #e5e4dd;transition:transform .2s}.feature-card:hover{transform:translateY(-4px)}.tiny-label{font-size:10px;font-weight:800;letter-spacing:.17em;text-transform:uppercase;color:#ae7457}.feature-card h3{font:400 30px/1.1 var(--serif);letter-spacing:-.035em;margin:35px 0 15px}.feature-card p{font-size:13px;line-height:1.7;color:#68737a;margin:0}.feature-arrow{font-size:12px;font-weight:800;margin-top:auto;padding-top:23px}.article-hero h1{max-width:950px}.article-layout{display:grid;grid-template-columns:220px 1fr;gap:80px;max-width:1000px}.article-meta{display:flex;flex-direction:column;gap:12px;font-size:11px;color:#8c735f;text-transform:uppercase;letter-spacing:.1em;font-weight:700}.article-body section{margin:0 0 40px}.article-body h2{font:400 39px/1.1 var(--serif);letter-spacing:-.04em;margin:0 0 17px}.article-body p{font-size:17px;line-height:1.85;color:#5a666d;margin:0}.phrase-list>div{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);padding:18px 0}.phrase-list>div:last-child{border-bottom:1px solid var(--line)}.phrase-list strong{font:400 24px var(--serif)}.phrase-list span{color:#667078;font-size:14px}.practice-box{margin-top:45px;background:#eeece6;padding:30px}.practice-box h2{font:400 37px var(--serif);margin:0}.practice-box p{font-size:15px;line-height:1.6}.practice-option{display:block;width:100%;text-align:left;border:1px solid #d3d2cb;background:#fff;padding:15px;margin:8px 0;cursor:pointer}.practice-option:hover,.practice-option:focus-visible{border-color:var(--copper)}.practice-option.correct{background:#dcebe2;border-color:#8fbda4}.practice-option.wrong{background:#f5ded6;border-color:#d59b87}.practice-result{min-height:26px;font-weight:700}.quiz-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:90px}.quiz-form{background:#fff;padding:35px;border:1px solid #e1e0d9}.quiz-form fieldset{border:0;padding:0 0 27px;margin:0 0 25px;border-bottom:1px solid var(--line)}.quiz-form legend{font:400 27px var(--serif);padding:0;margin-bottom:16px}.quiz-form label{display:block;padding:11px 14px;margin-bottom:6px;border:1px solid #dadad3;cursor:pointer;font-size:14px}.quiz-form label:has(input:checked){border-color:var(--navy);background:#eff1f1}.quiz-form input{accent-color:var(--navy);margin-right:9px}.quiz-result{margin-top:25px;padding:25px;background:#eae8e0}.quiz-result h3{font:400 29px var(--serif);margin:0 0 8px}.quiz-result p{line-height:1.6;color:#5c6870}.quiz-result a{font-weight:800;text-decoration:underline;text-underline-offset:4px}.teacher-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.teacher-card{background:#fff;border:1px solid #e1e0d9;overflow:hidden}.teacher-card img{width:100%;height:310px;object-fit:cover;object-position:center top}.teacher-card-content{padding:23px}.teacher-card h3{font:400 28px var(--serif);margin:16px 0 7px}.teacher-card p{font-size:13px;line-height:1.6;color:#667078;min-height:63px}.teacher-card a{display:inline-block;margin-top:15px;border-bottom:1px solid var(--navy);font-size:12px;font-weight:800}.demo-badge{display:inline-block;background:#efe0d6;color:#82492e;padding:6px 8px;font-size:10px;letter-spacing:.08em;text-transform:uppercase;font-weight:800}.team-note{background:#eae8e0;padding:18px 20px;margin-top:22px;font-size:13px;line-height:1.6;color:#59656c}.proof-strip{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}.proof-card{background:#fff;padding:25px;border:1px solid #e1e0d9}.proof-card strong{display:block;font:400 30px var(--serif);margin-bottom:10px}.proof-card p{font-size:13px;color:#68737a;line-height:1.7}.proof-card small{color:#a36e54;font-size:10px;font-weight:800;text-transform:uppercase;letter-spacing:.12em}.home-feature{background:#eae8e0}.home-feature-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:30px}.home-feature-head h2{font:400 clamp(40px,4.3vw,62px)/1.1 var(--serif);letter-spacing:-.05em;margin:0}.home-feature-head a{font-weight:800;font-size:13px;border-bottom:1px solid var(--navy);white-space:nowrap}.home-links{display:flex;gap:14px;flex-wrap:wrap;margin-top:25px}.home-links a{padding:13px 17px;background:var(--navy);color:#fff;font-size:12px;font-weight:700}
/* Demonstration cabinet */
.cabinet-hero{background:var(--navy);color:#fff;padding:55px 0}.cabinet-hero h1{font:400 clamp(43px,5vw,65px)/1.08 var(--serif);letter-spacing:-.05em;margin:0}.cabinet-hero p{color:#c1ccd2;font-size:15px;line-height:1.6;max-width:640px}.cabinet-wrap{padding:55px 0 90px}.demo-notice{border-left:3px solid var(--copper);padding:13px 17px;background:#f1e8e0;font-size:13px;line-height:1.6;color:#6b5145;margin-bottom:28px}.auth-grid{display:grid;grid-template-columns:1fr 1fr;gap:35px}.auth-panel,.dashboard-panel{background:#fff;border:1px solid #e0dfd9;padding:30px}.auth-panel h2,.dashboard-panel h2{font:400 34px var(--serif);margin:0 0 22px}.auth-tabs{display:flex;gap:8px;margin-bottom:20px}.auth-tabs button{border:1px solid #c8c9c6;background:#fff;padding:11px 16px;cursor:pointer;font-weight:700}.auth-tabs button.active{background:var(--navy);color:#fff}.form-grid{display:grid;gap:15px}.field{display:grid;gap:7px;font-size:12px;font-weight:800;color:#52606a}.field input,.field select{font:inherit;font-size:14px;padding:12px;border:1px solid #c8cbc9;background:#fff;width:100%;color:var(--ink)}.field input:focus,.field select:focus{outline:2px solid var(--copper);outline-offset:1px}.form-error{color:#a13f35;font-size:12px;min-height:18px;margin:0}.auth-aside{padding:38px;background:#eae8e0}.auth-aside h2{font:400 36px var(--serif);margin:0 0 18px}.auth-aside p,.auth-aside li{font-size:14px;line-height:1.75;color:#5c6770}.demo-accounts{background:#fff;padding:20px;margin-top:25px}.demo-accounts code{display:block;margin:7px 0;font-size:12px;overflow-wrap:anywhere}.dashboard-head{display:flex;align-items:center;justify-content:space-between;gap:25px;margin-bottom:25px}.dashboard-head h2{font:400 38px var(--serif);margin:0}.dashboard-head p{margin:5px 0 0;color:#69737a;font-size:13px}.ghost-button{border:1px solid #bfc4c4;background:transparent;padding:10px 14px;cursor:pointer;font-size:12px;font-weight:800}.ghost-button:hover{background:#eae8e0}.dashboard-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}.dashboard-panel h3{font:400 28px var(--serif);margin:0 0 17px}.dashboard-panel>p{color:#6c777d;font-size:13px;line-height:1.6}.teacher-picker{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:20px}.teacher-pick{border:1px solid #d4d5d1;background:#fff;padding:8px;cursor:pointer;text-align:left;font-size:11px;font-weight:800}.teacher-pick img{height:90px;width:100%;object-fit:cover;object-position:top;margin-bottom:8px}.teacher-pick.selected{border:2px solid var(--navy);padding:7px;background:#eef1f0}.slot-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:7px;margin:15px 0}.slot{border:1px solid #cfd3d1;background:#fff;padding:10px 4px;cursor:pointer;font-size:12px}.slot.available:hover,.slot.selected{background:var(--navy);color:#fff}.slot:disabled{background:#e6e7e3;color:#99a1a4;cursor:not-allowed}.booking-options{display:flex;gap:15px;align-items:center;flex-wrap:wrap;margin:17px 0}.booking-options label{font-size:12px;font-weight:700}.booking-options input{accent-color:var(--navy)}.status-msg{font-size:13px;line-height:1.5;min-height:20px;color:#306a50}.lesson-list{display:grid;gap:8px}.history-heading{font:400 24px var(--serif);margin:22px 0 5px}.lesson-row{border:1px solid #e0e0d9;padding:14px}.lesson-row-header{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.lesson-row strong{font-size:13px}.lesson-row small{display:block;color:#68737a;margin-top:5px;font-size:11px}.status-pill{font-size:10px;font-weight:800;text-transform:uppercase;letter-spacing:.07em;padding:5px 7px;background:#e7e9e6;color:#56636a;white-space:nowrap}.status-pill.pending{background:#f1e7ce;color:#7d6333}.status-pill.confirmed,.status-pill.approved{background:#dcebe2;color:#326b4b}.status-pill.declined{background:#f4dcd6;color:#9b4b3e}.lesson-row-actions{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}.lesson-row-actions button{background:#fff;border:1px solid #bdc3c1;padding:7px 9px;cursor:pointer;font-size:11px;font-weight:700}.lesson-row-actions button:hover{border-color:var(--navy)}.move-panel{background:#f1f0eb;padding:17px;margin-top:12px}.move-panel .form-grid{grid-template-columns:1fr 1fr}.move-panel .slot-grid{grid-template-columns:repeat(4,1fr)}.queue-item{border-top:1px solid #deded8;padding:17px 0}.queue-item strong{font-size:14px}.queue-item p{color:#69737a;font-size:12px;line-height:1.6;margin:7px 0}.queue-actions{display:flex;gap:8px}.queue-actions button{border:0;background:var(--navy);color:#fff;padding:9px 12px;font-size:11px;font-weight:800;cursor:pointer}.queue-actions button:last-child{background:#e8e4dc;color:var(--navy)}.empty-state{padding:20px;background:#f2f1ed;color:#737d82;font-size:13px;line-height:1.6}.muted{color:#737d82}.analytics-demo{margin-top:22px;padding:20px;background:#eae8e0;font-size:12px;color:#5b676e}.analytics-demo strong{color:var(--navy)}
@media(max-width:1100px){.teacher-grid{grid-template-columns:repeat(2,1fr)}.dashboard-grid{grid-template-columns:1fr}.teacher-picker{grid-template-columns:repeat(4,1fr)}}
@media(max-width:760px){.sub-hero{padding:66px 0}.sub-hero h1{font-size:clamp(44px,10vw,65px)}.course-detail-grid,.quiz-layout,.article-layout,.auth-grid{grid-template-columns:1fr;gap:32px}.feature-card-grid,.proof-strip{grid-template-columns:1fr}.feature-card{min-height:245px}.article-meta{flex-direction:row;flex-wrap:wrap}.home-feature-head{display:block}.home-feature-head a{display:inline-block;margin-top:22px}.detail-cta{display:block}.detail-cta .button{margin-top:20px}.teacher-card img{height:260px}.teacher-picker{grid-template-columns:repeat(2,1fr)}.teacher-pick img{height:130px}.cabinet-wrap{padding-top:35px}}
@media(max-width:520px){.sub-actions{align-items:flex-start;flex-direction:column}.teacher-grid{grid-template-columns:1fr}.teacher-card img{height:360px}.quiz-form,.auth-panel,.dashboard-panel{padding:22px}.phrase-list>div{display:block}.phrase-list span{display:block;margin-top:5px}.slot-grid{grid-template-columns:repeat(3,1fr)}.dashboard-head{align-items:flex-start}.dashboard-head h2{font-size:31px}.move-panel .form-grid{grid-template-columns:1fr}.move-panel .slot-grid{grid-template-columns:repeat(3,1fr)}}

/* Student and teacher workspace */
.relationship-panel,.workbench-panel{grid-column:1/-1}
.relationship-panel>p{font-size:14px;line-height:1.65;color:#68737a;max-width:710px}
.relationship-panel .teacher-picker{max-width:740px;margin-top:22px}
.relationship-panel .teacher-pick:disabled{opacity:.6;cursor:not-allowed}
.assigned-teacher{display:flex;align-items:center;gap:25px}
.assigned-teacher img{width:118px;height:118px;object-fit:cover;object-position:top;border-radius:50%}
.assigned-teacher h3{margin:7px 0!important}
.assigned-teacher p{margin:0 0 14px;color:#68737a;font-size:13px;line-height:1.6}
.slot-grid .slot{min-height:58px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-weight:800;transition:transform .18s,background .18s,border-color .18s}
.slot-grid .slot small{font-size:9px;font-weight:600}
.slot-grid .slot.available{background:#fff;color:var(--navy)}
.slot-grid .slot.available:hover,.slot-grid .slot.available.selected{transform:translateY(-2px);background:var(--navy);color:#fff}
.slot-grid .slot.busy,.slot-grid .slot.busy:disabled{background:#f8ded9;color:#9e3f3d;border-color:#e4a8a3;opacity:1}
.slot-grid .slot.planned{background:#dcefe1;color:#27694a;border-color:#87b999}
.slot-grid .slot.planned:hover{transform:translateY(-2px);background:#c9e8d3}
.slot-legend{display:flex;gap:18px;flex-wrap:wrap;margin:0 0 19px;font-size:11px;color:#657078}
.slot-legend span{display:flex;align-items:center;gap:6px}
.slot-legend i{width:11px;height:11px;border:1px solid #b7bfbd;display:inline-block}
.slot-legend .legend-planned{background:#dcefe1;border-color:#87b999}
.slot-legend .legend-busy{background:#f8ded9;border-color:#e4a8a3}
.slot-legend .legend-free{background:#fff}
.workbench-head h3{margin:5px 0 22px}
.workbench-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.workbench-block{border:1px solid #e3e3dc;background:#fbfaf7;padding:22px;min-width:0}
.workbench-block h4{font:400 26px var(--serif);margin:0 0 10px}
.workbench-block>p{font-size:12px;line-height:1.6;color:#68737a}
.mini-form{display:grid;grid-template-columns:1fr 1fr auto;gap:7px;margin:17px 0}
.mini-form input,.mini-form textarea,.workbench-block textarea{border:1px solid #cbd0ce;background:#fff;padding:10px;color:var(--navy);font:inherit;font-size:12px;width:100%;min-width:0}
.mini-form textarea{grid-column:1/-1;min-height:76px;resize:vertical}
.mini-form button,.small-action{border:0;background:var(--navy);color:#fff;font-size:11px;font-weight:800;padding:10px 13px;cursor:pointer}
.mini-form textarea+button{grid-column:1/-1;justify-self:start}
.word-card{display:flex;gap:12px;border-top:1px solid #e1e2dc;padding:14px 0}
.word-picture{font-size:29px;width:42px;flex:none}
.word-card strong{display:block;font-size:14px}
.word-card small{display:block;color:#a37357;font-size:10px;margin:3px 0}
.word-card p{margin:5px 0;font-size:13px}
.word-card em{font-size:11px;color:#667178}
#student-note textarea{display:block;min-height:150px;resize:vertical;margin:11px 0}
.note-archive{border-top:1px solid #dedfd9;margin-top:18px;padding-top:13px;display:flex;gap:7px;flex-wrap:wrap;align-items:center}
.note-archive strong{width:100%;font-size:11px}
.note-archive button{border:1px solid #b9c4bf;background:#fff;padding:7px 10px;cursor:pointer;font-size:11px}
.homework-item{padding:12px 0;border-top:1px solid #e1e2dc;font-size:12px}
.homework-item label{display:flex;gap:8px;align-items:flex-start}
.homework-item input{accent-color:#4f9b70}
.homework-item small{display:block;color:#747d81;margin-top:6px}
.homework-item .completed{text-decoration:line-through;color:#84918a}
.message-bubble{max-width:88%;padding:10px 13px;margin:9px 0;background:#ebece8;border-radius:12px 12px 12px 3px}
.message-bubble.from-teacher{margin-left:auto;background:#dfece4;border-radius:12px 12px 3px 12px}
.message-bubble small{color:#717d79;font-size:10px}
.message-bubble p{margin:4px 0 0;font-size:12px;line-height:1.55;white-space:pre-wrap;overflow-wrap:anywhere}
.roster-person{border:1px solid #c9cecb;background:#fff;padding:10px 15px;margin:0 7px 15px 0;cursor:pointer;font-size:12px;font-weight:800}
.roster-person.active{background:var(--navy);color:#fff}
@media(max-width:760px){.workbench-grid{grid-template-columns:1fr}.assigned-teacher{align-items:flex-start}}
@media(max-width:520px){.assigned-teacher img{width:75px;height:75px}.mini-form{grid-template-columns:1fr}.mini-form textarea,.mini-form textarea+button{grid-column:auto}.slot-legend{gap:9px}.workbench-block{padding:16px}}

/* Interactive grammar practice */
.exercise-hero{background:linear-gradient(115deg,#172838 0%,#294258 100%)}
.exercise-section{background:#f6f4ef}
.exercise-intro{display:grid;grid-template-columns:1.25fr .75fr;gap:60px;align-items:end;margin-bottom:30px}
.exercise-intro h2{font:400 clamp(39px,4vw,58px)/1.08 var(--serif);letter-spacing:-.05em;margin:0}
.exercise-intro h2 em{color:#ad765b}
.exercise-intro>p{font-size:14px;color:#657079;line-height:1.75}
.rule-strip{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.rule-strip span{padding:12px 16px;background:#e8e8e0;color:#46565e;font-size:13px}
.rule-strip strong{color:var(--navy)}
.exercise-layout{display:grid;grid-template-columns:255px minmax(0,1fr);gap:22px;align-items:start}
.exercise-menu{display:grid;gap:8px}
.exercise-menu button{display:grid;grid-template-columns:32px 1fr;gap:1px 11px;text-align:left;border:1px solid #dedfd9;background:#fff;padding:16px;cursor:pointer;transition:transform .2s,border-color .2s,background .2s}
.exercise-menu button:hover{transform:translateX(3px);border-color:#9eaaa8}
.exercise-menu button.active{background:var(--navy);color:#fff;border-color:var(--navy)}
.exercise-menu button>span{grid-row:1/3;color:#bd8667;font:italic 21px var(--serif)}
.exercise-menu button strong{font-size:13px}
.exercise-menu button small{font-size:11px;color:#879198;margin-top:4px}
.exercise-menu button.active small{color:#c3d0d5}
.exercise-main{background:#fff;border:1px solid #e0e1dc;padding:31px;min-height:520px}
.exercise-main-head{display:flex;justify-content:space-between;gap:20px;border-bottom:1px solid #e0e2dd;padding-bottom:24px;margin-bottom:25px}
.exercise-main-head h3{font:400 36px var(--serif);margin:8px 0}
.exercise-main-head p{font-size:12px;color:#68747b;line-height:1.6;max-width:520px;margin:0}
.exercise-best{font-size:11px;color:#986647;white-space:nowrap;padding-top:8px}
.exercise-list{display:grid;gap:11px}
.exercise-line{display:flex;align-items:center;gap:20px;background:#fbfaf7;border:1px solid #e7e7e1;padding:10px 18px;transition:border-color .25s,background .25s,transform .25s}
.exercise-line:hover{transform:translateY(-2px)}
.exercise-line.correct{border-color:#84b499;background:#eff8f1}
.exercise-line.incorrect{border-color:#d49b91;background:#fff2ef}
.exercise-visual{width:94px;height:79px;flex:none;position:relative;display:grid;place-items:center}
.exercise-visual svg{width:100%;height:100%;overflow:visible}
.exercise-flag{position:absolute;right:-12px;bottom:-5px;font-size:28px;filter:drop-shadow(0 4px 3px #1728382b)}
.exercise-line-copy{flex:1;min-width:0}
.question-index{font-size:10px;font-weight:800;text-transform:uppercase;letter-spacing:.13em;color:#a9765b;display:block;margin-bottom:7px}
.exercise-line-copy label{font-size:18px;color:#263746;line-height:1.8}
.exercise-line-copy select,.exercise-line-copy input{border:0;border-bottom:2px solid #a6b4b4;background:#fff;color:var(--navy);padding:5px 8px;font-family:inherit;font-size:16px;font-weight:700;min-width:88px;max-width:105px;text-align:center}
.exercise-line-copy input{width:75px}
.exercise-line-copy small{display:block;color:#7c5a4b;font-size:11px;margin-top:4px}
.exercise-footer{display:flex;align-items:center;gap:15px;flex-wrap:wrap;margin-top:25px}
.exercise-footer>span{font-size:13px;font-weight:800;color:#366a50}
.step-meta{display:flex;justify-content:space-between;font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:#7c8585;font-weight:800}
.exercise-progress{height:5px;background:#e5e8e3;margin:12px 0 25px;overflow:hidden}
.exercise-progress i{display:block;height:100%;background:#b97c60;transition:width .4s}
.step-card{display:grid;grid-template-columns:42% 1fr;gap:30px;align-items:center;min-height:360px;background:#fbfaf7;padding:25px}
.step-card .exercise-visual{width:100%;height:250px}
.step-card .exercise-flag{right:10px;bottom:5px;font-size:48px}
.step-copy h3{font:400 clamp(26px,3vw,36px)/1.3 var(--serif);margin:8px 0 25px}
.sentence-gap{display:inline-block;border-bottom:2px solid var(--copper);min-width:51px;text-align:center}
.answer-buttons{display:flex;gap:9px;flex-wrap:wrap}
.answer-buttons button{min-width:70px;border:1px solid #bdc9c6;background:#fff;padding:11px 17px;cursor:pointer;font-size:14px;font-weight:800;transition:transform .18s,background .18s}
.answer-buttons button:hover:not(:disabled){transform:translateY(-3px);background:#e6efec}
.answer-buttons button.correct{background:#d6ecdd;border-color:#75a98b;color:#216444}
.answer-buttons button.incorrect{background:#f8ded9;border-color:#d69f92;color:#a14f42}
.answer-feedback{min-height:43px;font-size:12px;line-height:1.6;color:#59676e}
.next-question:disabled{opacity:.45;cursor:not-allowed;transform:none}
.exercise-finish{text-align:center;padding:65px 20px;background:#f1f2ed}
.exercise-finish>span{display:block;font-size:55px;color:#b97c60;animation:finish-pop .5s both}
.exercise-finish h3{font:400 36px var(--serif);margin:10px 0}
.exercise-finish p{font-size:14px;color:#67737a}
.exercise-finish .button{margin-top:15px}
.hint-text{font-size:13px;color:#6f604c;min-height:20px}
.exercise-next{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-top:45px;padding:28px;background:#e8e8e0}
.exercise-next p{font:400 25px var(--serif);margin:0}
@keyframes finish-pop{from{opacity:0;transform:scale(.4) rotate(-25deg)}to{opacity:1;transform:scale(1) rotate(0)}}
@media(prefers-reduced-motion:reduce){.exercise-finish>span{animation:none}.exercise-line,.exercise-menu button,.answer-buttons button{transition:none}}
@media(max-width:950px){.exercise-layout{grid-template-columns:1fr}.exercise-menu{grid-template-columns:repeat(4,1fr)}.exercise-menu button{grid-template-columns:1fr}.exercise-menu button>span{grid-row:auto}.exercise-menu button small{display:none}}
@media(max-width:760px){.exercise-intro{grid-template-columns:1fr;gap:5px}.exercise-menu{grid-template-columns:repeat(2,1fr)}.step-card{grid-template-columns:1fr}.step-card .exercise-visual{height:180px}.exercise-next{align-items:flex-start;flex-direction:column}}
@media(max-width:520px){.exercise-main{padding:18px}.exercise-main-head{display:block}.exercise-best{margin-top:13px}.exercise-line{gap:10px;padding:8px}.exercise-line .exercise-visual{width:65px;height:66px}.exercise-line-copy label{font-size:15px}.exercise-line-copy select,.exercise-line-copy input{font-size:14px;min-width:70px}.exercise-menu button{padding:12px}.rule-strip{gap:6px}.rule-strip span{padding:9px;font-size:11px}}

/* Demo acceptance, portraits and single account entry */
.teacher-pick img{height:auto;aspect-ratio:4/5;object-fit:cover;object-position:center top;background:#e8e5df}
.teacher-card img{height:auto;aspect-ratio:4/5;object-fit:cover;object-position:center top}
.assigned-teacher img{width:112px;height:140px;flex:none;object-fit:cover;object-position:center top;border-radius:8px;background:#e8e5df}
.acceptance-notice{display:flex;gap:12px;align-items:center;flex-wrap:wrap;background:#e3f1e8;border-left:3px solid #5b9e74;color:#275d40;padding:12px 16px;margin-top:22px;font-size:13px}
.acceptance-notice strong{font-weight:800}
.demo-toast{position:fixed;z-index:100;right:26px;bottom:26px;max-width:340px;background:#183d2c;color:#fff;padding:16px 20px;box-shadow:0 16px 35px #152a2250;font-size:13px;font-weight:800;line-height:1.5;animation:toast-in .35s ease-out}
.demo-toast[hidden]{display:none}
@keyframes toast-in{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
.header-cta.is-signed-in{display:flex;align-items:center;gap:9px;min-height:48px;padding:6px 12px 6px 7px;max-width:175px}
.header-cta.is-signed-in .account-avatar{margin:0;width:34px;height:34px;flex:none;border-radius:50%;display:grid;place-items:center;background:#e8ece9;color:var(--navy);overflow:hidden}
.account-avatar svg{width:21px;height:21px}
.account-avatar img{width:100%;height:100%;object-fit:cover;object-position:center top}
.header-cta.is-signed-in .account-name{margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px}
@media(max-width:760px){.teacher-pick img{height:auto;aspect-ratio:4/5}.teacher-card img{height:auto;aspect-ratio:4/5}.header-cta.is-signed-in{min-height:42px;max-width:125px;padding:4px 9px 4px 5px}.header-cta.is-signed-in .account-avatar{width:30px;height:30px}.header-cta.is-signed-in .account-name{font-size:11px}}
@media(max-width:520px){.assigned-teacher img{width:82px;height:103px}.demo-toast{left:18px;right:18px;bottom:18px;max-width:none}.header-cta:not(.is-signed-in){font-size:10px;padding:10px}}
@media(prefers-reduced-motion:reduce){.demo-toast{animation:none}}