.course-shell{display:grid;gap:22px}.course-hero{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(240px,.8fr);gap:22px;align-items:stretch}.course-hero-main,.course-hero-art,.course-card,.course-sidebar,.course-lesson,.course-tool,.course-map{border:1px solid #d7dfed;border-radius:24px;background:#fff;box-shadow:0 10px 28px rgba(54,79,145,.08)}.course-hero-main{padding:30px;background:linear-gradient(135deg,#eef3ff,#fff8f0)}.course-hero-main h1{max-width:720px;margin:8px 0 12px;font-size:clamp(30px,4vw,50px);line-height:1.08}.course-hero-main p{max-width:680px;font-size:18px}.course-hero-art{padding:25px;display:grid;place-items:center;background:radial-gradient(circle at 30% 20%,#fff4bd 0 14%,transparent 15%),linear-gradient(160deg,#253b77,#6d86c7);color:#fff;min-height:210px}.course-hero-art .course-art-icon{font-size:76px;filter:drop-shadow(0 12px 8px rgba(0,0,0,.18))}.course-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:20px}.course-pill{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:8px 12px;background:#fff;border:1px solid #d5dff2;color:#364f91;font-weight:700}.course-mode-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.course-mode-card{padding:24px;min-height:220px;display:flex;flex-direction:column;justify-content:space-between}.course-mode-card.student{background:linear-gradient(145deg,#eff9ff,#fff)}.course-mode-card.teacher{background:linear-gradient(145deg,#fff5e8,#fff)}.course-mode-card h2{margin:10px 0 8px}.course-mode-card p{color:#526174}.course-mode-card .mode-icon{font-size:42px}.course-section-title{display:flex;justify-content:space-between;gap:14px;align-items:end}.course-section-title h2{margin:0}.course-map{padding:22px}.course-map-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:16px}.course-map-item{padding:14px;border-radius:16px;background:#f5f7fb}.course-map-item strong{display:block;color:#253b77}.course-map-item small{color:#64748b}.course-progress{display:grid;gap:9px;padding:16px 18px;border-radius:18px;background:#f4f7fc;border:1px solid #dfe6f2}.course-progress-bar{height:10px;border-radius:999px;background:#dce4f3;overflow:hidden}.course-progress-bar span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#8fcf38,#364f91);transition:width .25s ease}.course-student-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.course-card{padding:22px;display:grid;gap:13px}.course-card.done{border-color:#9dcc45;background:#fbfff4}.course-card-top{display:flex;justify-content:space-between;gap:12px;align-items:center}.course-number{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:#364f91;color:#fff;font-weight:800}.course-card h2{font-size:23px;margin:0}.course-card ul{margin:0;padding-left:20px;color:#526174;display:grid;gap:5px}.course-mini{padding:15px;border-radius:16px;background:#f7f9fd;border:1px dashed #bcc9e3;display:grid;gap:9px}.course-mini-title{font-weight:800;color:#253b77}.course-choice-row{display:flex;flex-wrap:wrap;gap:8px}.course-choice{border:1px solid #c9d5ea;border-radius:12px;background:#fff;padding:9px 12px;cursor:pointer;color:#253b77;font:inherit}.course-choice:hover,.course-choice:focus{border-color:#364f91;box-shadow:0 0 0 3px rgba(54,79,145,.12)}.course-feedback{min-height:22px;color:#48647f}.course-feedback.good{color:#28703d;font-weight:700}.course-feedback.warn{color:#9a5b00;font-weight:700}.course-teacher-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:18px;align-items:start}.course-sidebar{padding:14px;display:grid;gap:8px;position:sticky;top:18px}.course-sidebar button{width:100%;text-align:left;border:0;border-radius:13px;background:transparent;padding:12px;cursor:pointer;color:#364f91;font:inherit}.course-sidebar button.active{background:#364f91;color:#fff}.course-sidebar small{display:block;opacity:.75;margin-top:3px}.course-lesson{padding:26px;display:grid;gap:18px}.course-lesson h1{margin:0;font-size:32px}.course-lesson-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.course-tool{padding:16px;background:#fbfcff}.course-tool h3{margin:0 0 8px;color:#253b77}.course-tool p{margin:0;color:#526174}.course-script{padding:17px 19px;border-left:4px solid #d20011;background:#fff8f0;border-radius:12px;color:#593c2a}.course-reveal{padding:16px;border-radius:14px;background:#eef3ff;color:#263b6f}.course-toolbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between}.course-timer{font-variant-numeric:tabular-nums;font-size:25px;font-weight:800;color:#253b77;min-width:74px}.course-checklist{display:grid;gap:8px}.course-checklist button{border:1px solid #c9d5ea;background:#fff;border-radius:12px;padding:10px 12px;text-align:left;cursor:pointer;font:inherit;color:#364f91}.course-checklist button.checked{background:#eff9e5;border-color:#9dcc45;color:#2f5b27}.course-note{padding:15px;border-radius:14px;background:#fff7df;border:1px solid #f0d69a;color:#795611}.course-link-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.course-small{font-size:13px;color:#64748b}@media(max-width:800px){.course-hero,.course-mode-grid,.course-student-grid,.course-teacher-layout{grid-template-columns:1fr}.course-map-grid,.course-lesson-grid{grid-template-columns:1fr}.course-sidebar{position:static;grid-template-columns:repeat(2,minmax(0,1fr))}.course-sidebar button{font-size:14px}.course-hero-main h1{font-size:34px}}
@media print{.topbar,.course-sidebar,.course-actions button,.course-actions a,.course-toolbar button,.course-link-row a{display:none!important}.course-hero,.course-teacher-layout{display:block}.course-hero-art{display:none}.course-lesson{box-shadow:none;border:0}.course-reveal{display:block!important}}

.course-progress-native{display:block;width:100%;height:10px;border:0;border-radius:999px;overflow:hidden;accent-color:#364f91}.course-progress-native::-webkit-progress-bar{background:#dce4f3;border-radius:999px}.course-progress-native::-webkit-progress-value{background:linear-gradient(90deg,#8fcf38,#364f91);border-radius:999px}.course-progress-native::-moz-progress-bar{background:linear-gradient(90deg,#8fcf38,#364f91);border-radius:999px}
.course-grade-bar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:14px 16px;border:1px solid #d7dfed;border-radius:18px;background:#f7f9fd}.course-grade-label{font-weight:800;color:#253b77}.course-grade-select{min-width:140px}.course-grade-bar strong{color:#253b77}.course-grade-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:16px}.course-grade-item{display:block;padding:12px;border-radius:14px;background:#f5f7fb;border:1px solid #e1e7f2;text-decoration:none;color:inherit;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease}.course-grade-item:hover,.course-grade-item:focus{border-color:#364f91;box-shadow:0 5px 14px rgba(54,79,145,.12);transform:translateY(-1px)}.course-grade-item strong{display:block;color:#253b77}.course-grade-item small{color:#64748b}.course-grade-bar .course-small{flex:1 1 260px}@media(max-width:800px){.course-grade-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:520px){.course-grade-grid{grid-template-columns:1fr}}