:root{color-scheme:light;--bg:#f4f6f8;--card:#fff;--text:#172033;--muted:#667085;--line:#e5e7eb;--accent:#ff7a00;--accent-soft:#fff2e6;--blue:#2563eb;--blue-soft:#eff6ff;--green:#087a55;--green-soft:#ecfdf3;--violet:#6941c6;--violet-soft:#f4f3ff;--shadow:0 10px 30px rgba(23,32,51,.07)}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:var(--bg);color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif}button,select,input{font:inherit}
body{padding:max(12px,env(safe-area-inset-top)) 14px max(24px,env(safe-area-inset-bottom))}.shell{max-width:960px;margin:0 auto}.hidden{display:none!important}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:6px 2px 18px}.brand{display:flex;gap:10px;align-items:center}.mark{display:grid;place-items:center;background:var(--accent);color:#fff;font-weight:900;border-radius:14px;width:42px;height:42px;box-shadow:0 8px 18px rgba(255,122,0,.22)}.brand-name{font-size:18px;font-weight:850;line-height:1.05}.brand-sub{font-size:12px;color:var(--muted);margin-top:3px}.platform{font-size:12px;color:var(--muted);padding:6px 9px;border:1px solid var(--line);border-radius:999px;background:#fff}
.hero,.card,.dashboard-head,.panel,.lesson-card{background:var(--card);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow)}.hero{padding:24px;margin-bottom:12px;background:linear-gradient(145deg,#fff 58%,#fff4e8)}.card{padding:22px;margin-top:12px}.dashboard-head{padding:24px;margin-bottom:12px;display:flex;gap:20px;align-items:flex-start;justify-content:space-between}.panel{padding:20px;margin-top:12px}.lesson-card{padding:18px;margin-top:10px;cursor:pointer;transition:.15s transform,.15s border-color}.lesson-card:hover{transform:translateY(-1px);border-color:#cfd4dc}
.eyebrow,.badge{display:inline-flex;align-items:center;padding:6px 9px;border-radius:999px;background:var(--accent-soft);color:#a64f00;font-size:12px;font-weight:800}.step{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:6px}h1{font-size:clamp(28px,6vw,46px);line-height:1.04;letter-spacing:-.035em;margin:0 0 12px}h2{font-size:20px;margin:0 0 14px}h3{font-size:16px;margin:0 0 8px}p{margin:0;color:var(--muted);font-size:15px;line-height:1.55}
.section-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.role-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.role{border:1px solid var(--line);border-radius:18px;background:#fff;text-align:left;padding:15px;min-height:102px;cursor:pointer}.role strong{display:block;font-size:15px;margin-bottom:5px}.role span{font-size:12px;line-height:1.35;color:var(--muted)}.role.active{border-color:var(--accent);background:var(--accent-soft)}
.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.field{display:flex;flex-direction:column;gap:7px;margin-bottom:12px}.field label{font-size:13px;font-weight:750}.field select,.field input{min-height:46px;border:1px solid var(--line);border-radius:13px;background:#fff;padding:0 12px;color:var(--text)}.check-row{display:flex;flex-wrap:wrap;gap:8px;margin:4px 0 14px}.check-pill{border:1px solid var(--line);border-radius:999px;padding:9px 12px;background:#fff;cursor:pointer;font-size:13px}.check-pill.active{border-color:var(--text);background:var(--text);color:#fff}
.access-note,.notice{border-radius:14px;padding:12px 14px;background:#f8fafc;border:1px solid var(--line);font-size:13px;line-height:1.45;color:#475467;margin:4px 0 14px}.notice.warn{background:#fff8eb;border-color:#fedf89;color:#7a2e0e}.notice.safe{background:var(--green-soft);border-color:#abefc6;color:#05603a}
.primary,.secondary,.ghost,.link-btn{border:0;border-radius:14px;min-height:46px;font-weight:800;cursor:pointer}.primary{width:100%;background:var(--accent);color:#fff}.secondary{background:#f2f4f7;color:var(--text);padding:0 16px}.ghost{background:#fff;border:1px solid var(--line);padding:0 14px}.link-btn{background:var(--text);color:#fff;padding:0 14px;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.metric{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px}.metric b{font-size:25px;display:block;margin-bottom:4px}.metric span{font-size:12px;color:var(--muted)}
.chips,.filters{display:flex;flex-wrap:wrap;gap:7px}.chip,.filter{border-radius:999px;padding:7px 10px;font-size:12px;font-weight:750}.chip{background:#f2f4f7;color:#475467}.filter{border:1px solid var(--line);background:#fff;cursor:pointer}.filter.active{background:var(--text);color:#fff;border-color:var(--text)}
.lesson-top{display:flex;gap:12px;justify-content:space-between}.lesson-no{font-size:12px;font-weight:850;color:var(--accent);white-space:nowrap}.lesson-title{font-size:16px;font-weight:850;margin:2px 0 6px}.lesson-meta{display:flex;flex-wrap:wrap;gap:6px}.badge.program{background:var(--green-soft);color:var(--green)}.badge.modern{background:var(--violet-soft);color:var(--violet)}.badge.integrated{background:var(--blue-soft);color:var(--blue)}
.lesson-detail{background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;margin-top:12px}.lesson-detail-head{display:flex;justify-content:space-between;gap:15px;align-items:flex-start}.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}.detail{border:1px solid var(--line);border-radius:16px;padding:14px;background:#fcfcfd}.detail.full{grid-column:1/-1}.detail h3{font-size:12px;color:#475467;text-transform:uppercase;letter-spacing:.04em}.detail p{color:var(--text);font-size:14px}.big-question{font-size:21px;font-weight:850;line-height:1.25;color:var(--text);margin:8px 0 4px}.actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.actions a{min-height:42px}.lesson-list{margin-top:12px}.group-title{font-size:13px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:850;margin:18px 2px 6px}
.progress{height:10px;background:#eef0f3;border-radius:999px;overflow:hidden;margin-top:10px}.progress>i{display:block;height:100%;background:var(--accent);border-radius:999px}.two-col{display:grid;grid-template-columns:1.1fr .9fr;gap:12px}
footer{display:flex;justify-content:center;gap:8px;color:#98a2b3;font-size:12px;padding:22px 4px 4px}
@media(max-width:760px){.role-grid{grid-template-columns:1fr 1fr}.metrics{grid-template-columns:1fr 1fr}.field-grid,.two-col,.detail-grid{grid-template-columns:1fr}.detail.full{grid-column:auto}.dashboard-head{display:block}.dashboard-head .ghost{margin-top:14px}.hero,.card,.dashboard-head,.panel,.lesson-detail{border-radius:20px;padding:18px}}
@media(max-width:430px){.role-grid{grid-template-columns:1fr}.brand-sub{display:none}.metrics{grid-template-columns:1fr 1fr}.lesson-top{display:block}}
.media-overview p{margin-bottom:12px}.source-row{display:flex;flex-wrap:wrap;gap:7px;margin-top:12px}.source-pill,.video-chip{display:inline-flex;align-items:center;border-radius:999px;padding:7px 10px;font-size:12px;font-weight:800}.source-pill{background:#f2f4f7;color:#475467}.video-chip{background:#fff0f3;color:#c01048;white-space:nowrap}.lesson-side{display:flex;flex-direction:column;align-items:flex-end;gap:7px}.media-section{margin-top:16px;border-top:1px solid var(--line);padding-top:18px}.media-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px}.media-item{display:grid;grid-template-columns:42px 1fr auto;gap:11px;align-items:start;border:1px solid var(--line);border-radius:18px;padding:14px;background:#fff;text-decoration:none;color:var(--text);transition:.15s transform,.15s border-color}.media-item:hover{transform:translateY(-1px);border-color:#f5a15c}.media-play{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent);font-weight:900}.media-label{font-size:14px;font-weight:850;line-height:1.25}.media-source{font-size:12px;color:var(--accent);font-weight:800;margin-top:3px}.media-item p{font-size:12px;margin-top:6px;line-height:1.4}.media-open{color:var(--muted);font-weight:900}.media-rule{margin-top:10px;border-radius:14px;padding:11px 13px;background:#f8fafc;border:1px solid var(--line);font-size:13px;line-height:1.45;color:#475467}
@media(max-width:650px){.media-grid{grid-template-columns:1fr}.lesson-side{align-items:flex-start;margin-top:8px}}

.full-pack,.teacher-pack,.mastery-box{margin-top:18px;border-top:1px solid var(--line);padding-top:18px}.explanation{display:grid;gap:10px}.explanation p{color:var(--text);font-size:15px}.key-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:14px}.key-point{display:flex;gap:10px;border:1px solid var(--line);border-radius:15px;padding:12px;background:#fcfcfd}.key-point b{display:grid;place-items:center;flex:0 0 28px;width:28px;height:28px;border-radius:50%;background:var(--blue-soft);color:var(--blue)}.key-point span{font-size:13px;line-height:1.45}.lesson-theory{margin-top:12px}.tasks-title{margin-top:20px}.task-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.task-card{border:1px solid var(--line);border-radius:18px;padding:14px;background:#fff}.task-head{display:flex;justify-content:space-between;gap:8px;align-items:center;margin-bottom:10px}.task-level{font-size:12px;font-weight:850;color:var(--blue)}.task-num{font-size:11px;color:var(--muted)}.task-prompt{font-size:14px;font-weight:750;line-height:1.45;margin-bottom:10px}.task-card details{border-top:1px solid var(--line);padding-top:9px;margin-top:9px}.task-card summary{cursor:pointer;font-size:12px;font-weight:800;color:#475467}.task-card details p{font-size:12px;margin-top:7px;color:var(--text)}.repeat-box{margin-top:14px;border-radius:18px;padding:14px;background:var(--blue-soft)}.repeat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.repeat-grid>div{background:#fff;border-radius:14px;padding:11px}.repeat-grid b{color:var(--blue)}.repeat-grid p{font-size:12px;margin-top:5px}.teacher-pack{background:#fffaf5;border:1px solid #fed7aa;border-radius:20px;padding:16px}.teacher-objectives ul,.rubric ol{margin:8px 0 0;padding-left:20px}.teacher-objectives li,.rubric li{font-size:13px;line-height:1.45;margin:5px 0}.timeline{margin-top:12px;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#fff}.timeline-row{display:grid;grid-template-columns:70px 1fr;gap:10px;padding:11px 12px;border-bottom:1px solid var(--line)}.timeline-row:last-child{border-bottom:0}.timeline-time{font-weight:900;color:var(--accent);font-size:12px}.timeline-row b{font-size:13px}.timeline-row p{font-size:12px;margin-top:3px}.diff-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.diff-grid>div{border:1px solid var(--line);border-radius:14px;padding:11px;background:#fff}.diff-grid span{font-size:11px;font-weight:850;text-transform:uppercase;color:var(--muted)}.diff-grid p{font-size:12px;margin-top:5px}.rubric{margin-top:12px}.mastery-box{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center;border:1px solid #abefc6;border-radius:20px;padding:16px;background:var(--green-soft)}.mastery-box p{max-width:620px}.score-buttons{display:flex;flex-wrap:wrap;gap:7px;justify-content:flex-end}.score-buttons button{border:1px solid #75d5ae;border-radius:12px;background:#fff;color:#05603a;padding:10px 12px;font-weight:850;cursor:pointer}.score-buttons button.active{background:#05603a;color:#fff}.review-panel{border-color:#c7d7fe}.review-list{display:grid;gap:7px}.review-item{display:grid;grid-template-columns:54px 1fr;gap:10px;align-items:center;text-align:left;border:1px solid var(--line);background:#fff;border-radius:14px;padding:11px;cursor:pointer}.review-item span{color:var(--violet);font-weight:900;font-size:12px}.review-item b{font-size:13px}
@media(max-width:760px){.task-grid,.repeat-grid,.diff-grid,.key-grid{grid-template-columns:1fr}.mastery-box{grid-template-columns:1fr}.score-buttons{justify-content:flex-start}.timeline-row{grid-template-columns:58px 1fr}}

.student-home{margin-top:12px}.student-now{background:linear-gradient(145deg,#172033,#2b3958);color:#fff;border-radius:24px;padding:22px;margin-bottom:12px;box-shadow:var(--shadow)}.student-now .step{color:#cbd5e1}.student-now h2{font-size:24px;margin-bottom:8px}.student-now p{color:#d7deea;max-width:720px}.student-now-title{font-size:16px;font-weight:850;margin-bottom:7px}.student-now .student-open{width:auto;min-width:150px;padding:0 18px;margin-top:14px}.student-columns{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:12px}.student-box{background:#fff;border:1px solid var(--line);border-radius:20px;padding:17px;box-shadow:var(--shadow)}.student-box h3{margin-bottom:0}.student-queue-item{display:grid;width:100%;grid-template-columns:auto 1fr;gap:4px 10px;text-align:left;border:1px solid var(--line);background:#fcfcfd;border-radius:14px;padding:11px 12px;margin-top:8px;cursor:pointer;color:var(--text)}.student-queue-item:hover{border-color:#f5a15c}.student-queue-item>span{grid-row:1/3;align-self:center;padding:5px 7px;border-radius:9px;background:var(--accent-soft);color:#a64f00;font-size:11px;font-weight:850}.student-queue-item b{font-size:13px}.student-queue-item small{font-size:11px;color:var(--muted)}@media(max-width:650px){.student-columns{grid-template-columns:1fr}.student-now{border-radius:20px}}