:root{--bg:#f7f8f5;--white:#fff;--ink:#253b36;--muted:#64756e;--green:#145b50;--pale:#eaf2ec;--line:#dfe7df;--cream:#f7f1e6;--amber:#895a1d;--danger:#a23e32}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif}button,input,select,textarea{font:inherit}button,a,input,select,textarea{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.45;cursor:not-allowed}a{color:var(--green)}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #b89143;outline-offset:3px}button{border:0}h1,h2,h3,p{margin-top:0}h1{font-size:34px;line-height:1.22;letter-spacing:-1.1px;margin-bottom:12px;font-weight:620}h2{font-size:21px;line-height:1.4;letter-spacing:-.4px}h3{font-size:17px;margin-bottom:10px}p{margin-bottom:16px}.layout{display:grid;grid-template-columns:248px minmax(0,1fr);min-height:100vh}.sidebar{position:sticky;top:0;height:100vh;padding:34px 22px 24px;background:#fff;border-right:1px solid var(--line);display:flex;flex-direction:column}.brand{font-size:31px;font-weight:680;letter-spacing:-1.7px;color:var(--green);text-decoration:none;line-height:1.1}.brand small{display:block;font-size:10px;letter-spacing:4px;margin:9px 0 44px 2px;font-weight:600}.nav-label,.eyebrow{font-size:12px;text-transform:uppercase;letter-spacing:1.8px;color:var(--muted);font-weight:650;margin:0 0 13px}.nav{display:grid;gap:6px}.nav button{display:flex;align-items:center;gap:13px;background:transparent;border-radius:8px;padding:12px 14px;color:var(--muted);text-align:left;font-size:14px;font-weight:550}.nav button.active{background:var(--pale);color:var(--green)}.icon{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.65;flex-shrink:0}.sidebar-bottom{margin-top:auto;padding-top:32px}.demo-note{padding:15px;background:var(--cream);font-size:13px;border-radius:10px;color:#6b644f}.profile{display:flex;align-items:center;gap:11px;margin-top:25px}.avatar{width:38px;height:38px;display:grid;place-items:center;background:var(--pale);border-radius:50%;font-weight:650;color:var(--green);flex-shrink:0}.profile strong,.profile small{display:block;font-size:13px}.profile small{color:var(--muted);font-size:12px}.main{min-width:0}.topbar{padding:20px 38px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px;background:#ffffffa8}.breadcrumbs{font-size:14px;color:var(--muted)}.role-switch{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted)}select,input,textarea{background:white;color:var(--ink);border:1px solid #ccd8cf;border-radius:7px;padding:10px 12px;max-width:100%}select{font-size:14px}.content{max-width:1300px;padding:35px 38px 55px;margin:auto}.page-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:23px}.sub{color:var(--muted);font-size:14px;margin-bottom:0}.pill{display:inline-flex;align-items:center;gap:7px;border-radius:5px;padding:5px 9px;font-size:12px;background:var(--pale);color:var(--green);font-weight:600;white-space:normal}.pill.amber{background:#faf0d8;color:var(--amber)}.pill.neutral{background:#eff1ee;color:var(--muted)}.pill.red{color:var(--danger);background:#faeee9}.stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-bottom:25px}.stat{border-top:2px solid var(--line);padding:18px 0 9px;display:flex;align-items:center;gap:17px}.stat-number{font-size:32px;line-height:1.1;color:var(--green);font-weight:550}.stat-label{font-size:13px;color:var(--muted)}.grid{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(270px,1fr);gap:24px;align-items:start}.panel{background:var(--white);border:1px solid var(--line);border-radius:12px;padding:24px;margin-bottom:22px}.panel.flat{background:transparent;border:0;padding:0}.panel-head{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:19px}.panel-head h2{margin:0}.muted{color:var(--muted)}.small{font-size:13px}.feature{background:var(--green);color:#fff;border:0;padding:28px;position:relative;overflow:hidden}.feature h2{font-size:28px;max-width:420px;margin:12px 0}.feature p{color:#daebe3;max-width:430px}.feature .eyebrow{color:#b9d7cb}.feature .btn{background:#fff;color:var(--green)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;background:var(--green);color:#fff;border-radius:7px;padding:11px 17px;text-decoration:none;font-weight:550;font-size:14px;min-height:43px}.btn.secondary{background:#fff;color:var(--green);border:1px solid var(--line)}.btn.soft{color:var(--green);background:var(--pale)}.btn.sm{padding:8px 12px;min-height:36px;font-size:13px}.btn.text{padding:0;min-height:30px;background:transparent;color:var(--green)}.actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:17px}.route-step{display:flex;gap:16px;position:relative;padding-bottom:25px}.route-step:last-child{padding-bottom:0}.route-step:not(:last-child):before{content:"";position:absolute;left:15px;top:32px;bottom:0;width:1px;background:var(--line)}.step-num{height:31px;width:31px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;font-size:12px;flex-shrink:0;background:#fff}.route-step.done .step-num{background:var(--pale);border-color:var(--pale);color:var(--green)}.route-step.current .step-num{background:var(--green);color:#fff;border-color:var(--green)}.route-step h3{margin:2px 0 3px;font-size:15px}.route-step p{font-size:13px;color:var(--muted);margin:0}.child-head{display:flex;align-items:center;gap:13px;padding-bottom:19px;margin-bottom:18px;border-bottom:1px solid var(--line)}.child-head .avatar{width:48px;height:48px;font-size:18px}.child-head h3{margin:0}.detail{display:flex;justify-content:space-between;gap:20px;font-size:14px;margin:10px 0}.detail span:first-child{color:var(--muted)}.detail span:last-child{text-align:right}.notice{background:var(--cream);border-left:3px solid #c8a362;padding:15px 17px;font-size:14px;margin:16px 0;border-radius:0 6px 6px 0}.notice.success{background:var(--pale);border-color:var(--green)}.empty{padding:28px 0;text-align:center;color:var(--muted);font-size:14px}.lesson-row{padding:18px 0;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:18px}.lesson-row:first-child{border-top:0}.lesson-row h3{margin:4px 0 4px}.lesson-symbol{width:46px;height:46px;display:grid;place-items:center;flex-shrink:0;border-radius:9px;background:var(--cream);font-size:15px;font-weight:600}.lesson-info{display:flex;gap:15px;align-items:center}.flow{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:23px}.flow span{font-size:12px;color:var(--muted);padding:5px 9px;background:#edf0ea;border-radius:4px}.flow span.on{color:white;background:var(--green)}.text-passage{font-size:19px;line-height:1.9;max-width:730px}.vocab{display:flex;flex-wrap:wrap;gap:8px}.vocab span{font-size:13px;padding:7px 10px;background:var(--cream);border-radius:5px}.question{border-top:1px solid var(--line);padding-top:20px;margin-top:20px}.question:first-of-type{margin-top:0}.question h3{font-size:17px}.options{display:grid;gap:9px}.option{display:flex;gap:11px;align-items:flex-start;padding:12px 14px;border:1px solid var(--line);border-radius:8px;font-size:15px;cursor:pointer}.option:has(input:checked){background:var(--pale);border-color:var(--green)}input[type=radio]{accent-color:var(--green);margin:5px 0 0}.saved{font-size:14px;color:var(--green);background:var(--pale);padding:12px;border-radius:7px}.review{padding:16px;background:var(--cream);font-size:14px;margin-top:12px;border-radius:8px}.slide{padding:25px;background:var(--pale);border-radius:9px;min-height:155px;margin-bottom:12px}.slide small{color:var(--green);letter-spacing:1px}.slide h3{font-size:24px;margin:13px 0 8px}.slide p{margin:0}.form-grid{display:grid;gap:14px}.form-grid label{display:grid;gap:6px;font-size:14px}textarea{resize:vertical;min-height:80px;width:100%}.bar{height:7px;background:#edf0eb;border-radius:5px;overflow:hidden;margin-top:9px}.bar i{height:100%;background:var(--green);display:block}.progress-row{margin:20px 0}.progress-row .detail{margin-bottom:7px}.task-row{padding:17px 0;border-top:1px solid var(--line)}.task-row p{margin:8px 0;white-space:pre-wrap}.task-meta{font-size:12px;color:var(--muted);display:flex;gap:9px;flex-wrap:wrap}.timeline{border-left:1px solid var(--line);padding-left:18px}.event{font-size:14px;margin:0 0 18px}.event small{display:block;color:var(--muted);font-size:12px}#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);padding:13px 22px;background:var(--ink);color:#fff;border-radius:9px;box-shadow:0 5px 25px #0002;display:none;max-width:calc(100% - 30px);z-index:30}#toast.show{display:block}#toast.error{background:#873b32}.loading{padding:40px}.diagnostic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.diagnostic-grid .panel{margin:0}.tag-list{display:flex;flex-wrap:wrap;gap:7px;margin-top:10px}.guide{font-size:13px;border-top:1px solid var(--line);padding-top:20px;margin-top:24px}.guide summary{cursor:pointer;color:var(--green)}.guide ol{padding-left:22px;line-height:1.8}.wide{grid-column:1/-1}.error-panel{max-width:700px;margin:50px auto;padding:30px}.responsive-table{overflow:auto}table{border-collapse:collapse;width:100%;font-size:14px}th,td{text-align:left;padding:13px 12px;border-bottom:1px solid var(--line)}th{font-size:12px;color:var(--muted);font-weight:500}.focus-note{font-size:13px;color:var(--muted);margin-top:12px}footer{font-size:12px;color:var(--muted);display:flex;justify-content:space-between;margin-top:22px;gap:20px}@media(min-width:1450px){.content{padding-top:45px}.panel{padding:28px}}@media(max-width:1100px){.layout{grid-template-columns:205px 1fr}.sidebar{padding:30px 14px}.content{padding:28px 24px}.topbar{padding:18px 24px}.grid{grid-template-columns:1fr}.diagnostic-grid{grid-template-columns:1fr}.stats{gap:10px}.stat{gap:10px}}@media(max-width:700px){.layout{display:block}.sidebar{position:static;height:auto;padding:20px;border-right:0;border-bottom:1px solid var(--line)}.brand{font-size:27px}.brand small{display:inline;font-size:9px;margin-left:12px;letter-spacing:2px}.nav-label,.sidebar-bottom{display:none}.nav{display:flex;overflow:auto;margin-top:20px;gap:5px}.nav button{white-space:nowrap;padding:10px}.nav .icon{display:none}.topbar{padding:13px 20px}.breadcrumbs{display:none}.role-switch{width:100%;justify-content:space-between}.content{padding:26px 20px}.page-head{display:block}h1{font-size:29px}.page-head>.pill{margin-top:14px}.stats{grid-template-columns:1fr}.stat{padding:12px 0}.stat-number{font-size:26px;width:56px}.panel{padding:20px}.lesson-row{flex-wrap:wrap}.text-passage{font-size:18px}.feature h2{font-size:25px}.detail{flex-wrap:wrap;gap:4px}.page-head .actions{margin-top:14px}}
.lesson-tabs{display:flex;gap:24px;margin:0 0 25px;border-bottom:1px solid var(--line)}.lesson-tabs button{padding:12px 0;background:transparent;font-size:15px;color:var(--muted);border-bottom:3px solid transparent}.lesson-tabs button[aria-selected=true]{color:var(--green);border-color:var(--green);font-weight:600}.presentation{max-width:1250px;margin:auto;padding:30px}.presentation-top{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:26px;color:var(--muted)}.presentation-slide{position:relative;background:white;min-height:65vh;padding:45px 55px 70px;border:1px solid var(--line);border-radius:18px}.presentation-slide h1{font-size:36px;line-height:1.35;margin:22px 0 26px}.presentation-options{display:grid;gap:15px}.presentation-option{padding:18px 22px;border:1px solid var(--line);border-radius:10px;display:flex;gap:20px;align-items:center;font-size:23px}.presentation-option>span{color:var(--muted);font-weight:650}.presentation-option strong{margin-left:auto;color:var(--green)}.presentation-option.correct{border-color:#44976a;background:var(--pale);font-weight:600}.presentation-prompt{font-size:22px;line-height:1.7;margin-top:24px}.presentation-slide .review{font-size:21px;line-height:1.7;padding:22px}.slide-counter{position:absolute;bottom:20px;right:30px;color:var(--muted)}.presentation-controls{display:flex;align-items:center;gap:22px;margin:20px 0;flex-wrap:wrap}@media(max-width:700px){.presentation{padding:18px}.presentation-slide{padding:24px 20px 55px}.presentation-slide h1{font-size:25px}.presentation-option,.presentation-prompt,.presentation-slide .review{font-size:18px}.lesson-tabs{gap:16px}.lesson-tabs button{font-size:14px}}
.presentation-slide h1{letter-spacing:-.3px}
.help-field{display:grid;gap:7px;font-size:14px;margin-top:15px}.feedback-preview{line-height:1.7}.form-grid{margin-top:15px}details.guide[open]>form{margin-top:20px}.diagnostic-grid{margin-bottom:24px}.profile strong{overflow-wrap:anywhere}.detail>span:last-child{max-width:65%;overflow-wrap:anywhere}

@media(min-width:701px){.sidebar{overflow-y:auto}.nav{flex-shrink:0}}

.math-model{margin:22px 0;padding:18px;border:1px solid var(--line);border-radius:12px}.math-bar{display:flex;min-height:48px;margin:14px 0;border-radius:6px;overflow:hidden}.math-bar>div{display:grid;place-items:center;min-width:0;font-size:14px}.question h4{margin:12px 0}.question li{margin-bottom:10px}.panel p{overflow-wrap:anywhere}
/* SenSay UX-001: semantic surfaces, breathing room, one leading action. */
:root{--surface-page:#f7f7f2;--surface-card:#fff;--action-primary:#15594e;--surface-success:#e9f3eb;--surface-note:#f4eee2;--surface-attention:#fff4d6;--surface-error:#fae9e5;--text-primary:#263a35;--green:var(--action-primary);--ink:var(--text-primary)}
body{background:var(--surface-page)}.content{max-width:1080px}.panel{margin-bottom:28px;padding:28px;border-radius:16px}.panel>h2{margin-bottom:20px}.feature{padding:36px;background:var(--surface-success)}.feature .btn{margin-top:16px}.feature h2{max-width:700px}.notice{background:var(--surface-note)}.notice.success,.saved{background:var(--surface-success)}.pill.amber{background:var(--surface-attention);color:#73571c}.pill.red{background:var(--surface-error);color:#853c33}.btn{min-height:44px}.nav button{min-height:44px}.nav-more{margin:24px 0;border-top:1px solid var(--line);padding-top:20px}.nav-more summary{cursor:pointer;padding:12px 0;color:var(--muted)}.nav-more .btn{display:block;text-align:left;margin:4px 0}.account-control{display:flex;gap:16px;align-items:center;margin-left:auto;font-size:13px}.staging-login{max-width:560px;margin:8vh auto;padding:24px}.staging-login .brand{display:block;margin-bottom:40px}.staging-login input{width:100%}.staging-login #login-error{color:#853c33}.calm-number{font-size:32px;margin:0}.completed-stage>summary{cursor:pointer;font-weight:600;color:var(--green);padding:4px}.completed-stage>.panel{border:0;margin:20px 0 0;padding:0}.connection-notice{background:var(--surface-attention);color:var(--text-primary);padding:16px 24px;position:sticky;top:0;z-index:50}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #267968;outline-offset:3px}.task-row{padding-top:20px;padding-bottom:20px}.content h1,.content h2{overflow-wrap:anywhere}@media(max-width:700px){.panel{padding:22px;margin-bottom:24px}.feature{padding:24px}.content{padding:24px 16px}.nav-more{margin:10px 0 0;padding-top:6px}.nav-more .btn{display:inline-block}.account-control{width:100%;justify-content:space-between;gap:10px}.topbar{padding:12px 16px}.staging-login{margin:4vh auto}.feature .btn{width:100%}}
.feature{color:var(--text-primary)}.feature p{color:var(--text-primary);max-width:650px}.feature .eyebrow{color:var(--action-primary)}.feature .btn{background:var(--action-primary);color:#fff}

.critical-attention{background:var(--surface-attention,#fff4d6);border:1px solid #d8ae50}.critical-attention h2,.critical-attention h3{color:#704615}