*{box-sizing:border-box}body,html{margin:0;padding:0;font-family:Arial,sans-serif;background:#f7f9fc;color:#111827}body{overflow-x:hidden}main{max-width:1200px;margin:auto;padding:40px 24px}img{max-width:100%;display:block}a{text-decoration:none}.hero-section{padding:70px 0}.hero-grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:60px;gap:60px;align-items:center}.hero-badge{display:inline-block;padding:10px 16px;border-radius:999px;background:#dbeafe;font-weight:700;margin-bottom:20px}.hero-title{font-size:60px;line-height:1.1;margin-bottom:24px}.hero-text{font-size:20px;line-height:1.7;color:#4b5563;max-width:580px}.hero-learner-panel{margin-top:24px;padding:18px;border-radius:22px;background:#ffffff;border:1px solid #dbeafe;box-shadow:0 14px 34px rgba(37,99,235,.08);max-width:620px}.hero-learner-panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:12px}.hero-learner-panel-head strong{font-size:18px;color:#111827}.hero-learner-panel-head span{display:inline-flex;align-items:center;justify-content:center;padding:7px 12px;border-radius:999px;background:#eff6ff;color:#1d4ed8;font-size:12px;font-weight:800}.hero-progress-shell{margin-bottom:14px}.hero-learner-meta{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:12px;gap:12px}.hero-learner-meta-item{padding:14px;border-radius:16px;background:#f8fafc;border:1px solid #e5e7eb}.hero-learner-meta-item small{display:block;font-size:11px;font-weight:700;color:#6b7280;margin-bottom:6px}.hero-learner-meta-item strong{display:block;font-size:14px;line-height:1.5;color:#111827}.hero-actions{display:flex;gap:16px;margin-top:28px;flex-wrap:wrap}.btn-primary{display:inline-flex;align-items:center;justify-content:center;padding:14px 22px;border-radius:12px;background:#2563eb;color:#ffffff;font-weight:700;transition:.2s ease}.btn-primary:hover{background:#1d4ed8}.btn-secondary{display:inline-flex;align-items:center;justify-content:center;padding:14px 22px;border-radius:12px;background:#ffffff;color:#111827;font-weight:700;border:1px solid #d1d5db;transition:.2s ease}.btn-secondary:hover{background:#f3f4f6}.hero-visual{display:flex;justify-content:center}.hero-image{width:100%;max-width:520px;border-radius:24px;box-shadow:0 20px 50px rgba(15,23,42,.14)}.stats-section{padding:10px 0 30px}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:18px;gap:18px}.stats-grid>div{background:#ffffff;border:1px solid #e5e7eb;border-radius:18px;padding:24px;text-align:center;box-shadow:0 10px 30px rgba(15,23,42,.05)}.stats-grid h3{margin:0 0 8px;font-size:28px}.stats-grid p{margin:0;color:#6b7280}.section-block{padding:28px 0 16px}.section-head{margin-bottom:20px}.section-head h2{margin:0 0 8px;font-size:34px}.section-head p{margin:0;color:#6b7280;line-height:1.7}.course-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));grid-gap:24px;gap:24px}.course-card{background:#ffffff;border:1px solid #e5e7eb;border-radius:20px;overflow:hidden;box-shadow:0 12px 30px rgba(15,23,42,.06);transition:transform .2s ease,box-shadow .2s ease}.course-card-active{border-color:#bfdbfe;box-shadow:0 18px 38px rgba(37,99,235,.1)}.course-card:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(15,23,42,.1)}.course-thumb-wrap{width:100%;aspect-ratio:4/3;overflow:hidden;background:#e5e7eb}.course-thumb{width:100%;height:100%;object-fit:cover}.course-body{padding:20px}.course-card-badge-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.course-badge{display:inline-block;padding:6px 10px;border-radius:999px;background:#eef2ff;color:#4338ca;font-size:12px;font-weight:700;margin-bottom:12px}.course-badge-free{background:#dcfce7;color:#166534}.course-badge-active{background:#dbeafe;color:#1d4ed8}.course-progress-pill{display:inline-flex;align-items:center;justify-content:center;min-width:52px;padding:6px 10px;border-radius:999px;background:#eff6ff;color:#1d4ed8;font-size:12px;font-weight:800;border:1px solid #bfdbfe}.course-body h3{margin:0 0 10px;font-size:24px}.course-body p{margin:0 0 12px;color:#6b7280}.course-price{font-size:22px;font-weight:800;margin-bottom:18px}.course-card-progress-box{margin:0 0 16px;padding:14px;border-radius:16px;background:#f8fafc;border:1px solid #e5e7eb}.course-card-progress-shell{margin-bottom:12px}.course-card-progress-inline{margin-top:2px}.course-current-lesson-note{margin-top:4px;padding:12px;border-radius:14px;background:#ffffff;border:1px solid #dbeafe}.course-current-lesson-note small{display:block;font-size:11px;font-weight:700;color:#6b7280;margin-bottom:4px}.course-current-lesson-note strong{display:block;font-size:14px;line-height:1.4;color:#1e3a8a}.course-card-meta-row{display:flex;flex-direction:column;gap:6px;margin-bottom:16px;font-size:12px;color:#6b7280}.course-price-free{color:#166534}.enroll-button{width:100%;padding:14px 16px;border:none;border-radius:12px;background:#111827;color:#ffffff;font-weight:700;cursor:pointer;transition:.2s ease}.enroll-button:hover{background:#1f2937}.enroll-button-free{background:#16a34a}.enroll-button-free:hover{background:#15803d}.enroll-button-continue{background:#2563eb}.enroll-button-continue:hover{background:#1d4ed8}.why-section{padding:40px 0}.why-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:20px;gap:20px}.why-card{background:#ffffff;border:1px solid #e5e7eb;border-radius:18px;padding:24px;box-shadow:0 10px 30px rgba(15,23,42,.05)}.why-card h3{margin-top:0;margin-bottom:10px}.why-card p{margin:0;color:#6b7280;line-height:1.7}.cta-banner{margin-top:30px;padding:28px;border-radius:24px;background:linear-gradient(135deg,#0f172a,#1d4ed8);display:grid;grid-template-columns:1.2fr .8fr;grid-gap:24px;gap:24px;align-items:center;color:#ffffff;overflow:hidden}.cta-content h2{margin-top:0;margin-bottom:12px;font-size:36px}.cta-content p{margin:0 0 20px;line-height:1.7;color:rgba(255,255,255,.9)}.cta-actions{display:flex;gap:16px;flex-wrap:wrap}.cta-image-wrap{display:flex;justify-content:center;align-items:center}.cta-image{width:100%;max-width:420px;border-radius:20px;box-shadow:0 18px 40px rgba(0,0,0,.25)}@media (max-width:991px){.hero-grid{grid-template-columns:1fr;gap:32px}.hero-title{font-size:42px}.stats-grid{grid-template-columns:repeat(2,1fr)}.cta-banner,.hero-learner-meta,.why-grid{grid-template-columns:1fr}}@media (max-width:640px){main{padding:28px 16px}.hero-section{padding:36px 0}.hero-title{font-size:34px}.hero-text{font-size:17px}.stats-grid{grid-template-columns:1fr}.section-head h2{font-size:28px}.hero-learner-panel{padding:16px;border-radius:18px}.course-card-progress-box{padding:12px}}.site-header{position:-webkit-sticky;position:sticky;top:0;z-index:50;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:rgba(255,255,255,.9);border-bottom:1px solid rgba(229,231,235,.9)}.header-container{max-width:1200px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between;gap:20px}.header-brand{display:flex;align-items:center;gap:12px;color:#111827;min-width:0}.header-brand-mark{width:42px;height:42px;display:flex;align-items:center;justify-content:center;border-radius:12px;background:linear-gradient(135deg,#2563eb,#1e3a8a);color:#ffffff;font-weight:800;font-size:20px;box-shadow:0 10px 24px rgba(37,99,235,.28)}.header-brand-text{display:flex;flex-direction:column}.header-brand-text strong{font-size:18px;line-height:1.2}.header-brand-text span{font-size:12px;color:#6b7280;line-height:1.2}.header-nav{display:flex;align-items:center;gap:24px;flex-wrap:wrap}.header-nav a{color:#374151;font-weight:600;transition:.2s ease}.header-nav a:hover{color:#111827}.header-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.header-learner-indicator{display:flex;align-items:center;gap:12px;min-width:0;padding:10px 14px;border-radius:16px;background:rgba(255,255,255,.92);border:1px solid #dbeafe;box-shadow:0 10px 24px rgba(37,99,235,.08);color:#111827;transition:.2s ease}.header-learner-indicator:hover{transform:translateY(-1px);box-shadow:0 14px 28px rgba(37,99,235,.12)}.header-learner-indicator-empty{border-color:#e5e7eb;box-shadow:0 10px 24px rgba(15,23,42,.05)}.header-progress-ring{position:relative;width:50px;height:50px;border-radius:999px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.header-progress-ring-empty{background:conic-gradient(#cbd5e1 0 100%,#e5e7eb 100% 100%)}.header-progress-ring-inner{width:36px;height:36px;border-radius:999px;background:#ffffff;display:flex;align-items:center;justify-content:center;box-shadow:inset 0 0 0 1px #e5e7eb}.header-progress-ring-inner span{font-size:11px;font-weight:800;color:#1d4ed8}.header-learner-copy{min-width:0;display:flex;flex-direction:column}.header-learner-copy small{font-size:11px;font-weight:700;color:#6b7280;margin-bottom:2px}.header-learner-copy strong{font-size:14px;line-height:1.3;color:#111827}.header-learner-copy span,.header-learner-copy strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:240px}.header-learner-copy span{font-size:12px;line-height:1.4;color:#6b7280}.header-link-button{display:inline-flex;align-items:center;justify-content:center;padding:10px 16px;border-radius:12px;border:1px solid #d1d5db;background:#ffffff;color:#111827;font-weight:700;transition:.2s ease}.header-link-button:hover{background:#f3f4f6}.header-cta-button{display:inline-flex;align-items:center;justify-content:center;padding:10px 18px;border-radius:12px;background:#111827;color:#ffffff;font-weight:700;box-shadow:0 10px 24px rgba(17,24,39,.16);transition:.2s ease}.header-cta-button:hover{background:#1f2937}.site-footer{margin-top:60px;background:#0f172a;color:#e5e7eb}.footer-container{max-width:1200px;margin:0 auto;padding:48px 24px 32px;display:grid;grid-template-columns:1.2fr 1fr 1fr;grid-gap:28px;gap:28px}.footer-brand{display:flex;align-items:flex-start;gap:14px}.footer-brand-mark{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:14px;background:linear-gradient(135deg,#2563eb,#1d4ed8);color:#ffffff;font-weight:800;font-size:20px}.footer-brand strong{display:block;font-size:18px;margin-bottom:8px;color:#ffffff}.footer-brand p{margin:0;line-height:1.7;color:#cbd5e1;max-width:320px}.footer-links-block h4{margin:0 0 14px;font-size:16px;color:#ffffff}.footer-links{display:flex;flex-direction:column;gap:12px}.footer-links a{color:#cbd5e1;transition:.2s ease}.footer-links a:hover{color:#ffffff}.footer-bottom{max-width:1200px;margin:0 auto;padding:18px 24px 28px;border-top:1px solid rgba(255,255,255,.08);display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.footer-bottom small{color:#94a3b8}.footer-bottom-links{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.footer-bottom-links a{color:#cbd5e1;font-size:14px}.footer-bottom-links a:hover{color:#ffffff}@media (max-width:991px){.header-container{flex-wrap:wrap;justify-content:center}.header-brand{width:100%}.header-brand,.header-nav{justify-content:center}.header-learner-indicator{order:4;width:100%;justify-content:flex-start}.header-actions{justify-content:center}.footer-container{grid-template-columns:1fr 1fr}}@media (max-width:640px){.header-container{padding:14px 16px}.header-nav{gap:16px}.header-actions{width:100%}.header-learner-indicator{padding:10px 12px}.header-learner-copy span,.header-learner-copy strong{max-width:100%}.header-cta-button,.header-link-button{flex:1 1}.footer-container{grid-template-columns:1fr;padding:36px 16px 24px}.footer-bottom{padding:16px 16px 24px;flex-direction:column;align-items:flex-start}}.course-detail-page{padding-top:12px}.course-detail-hero{margin-bottom:32px;padding:36px;border-radius:28px;background:linear-gradient(135deg,#eff6ff,#ffffff 55%,#eef2ff);border:1px solid #dbeafe;box-shadow:0 18px 40px rgba(15,23,42,.06)}.course-detail-grid{display:grid;grid-template-columns:1.15fr .85fr;grid-gap:32px;gap:32px;align-items:center}.course-breadcrumb{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:18px;font-size:14px;color:#6b7280}.course-breadcrumb a{color:#2563eb;font-weight:600}.course-detail-badge{display:inline-block;padding:8px 14px;border-radius:999px;background:#dbeafe;color:#1d4ed8;font-weight:700;margin-bottom:18px}.course-detail-badge-free{background:#dcfce7;color:#166534}.course-detail-title{margin:0 0 16px;font-size:52px;line-height:1.08}.course-detail-text{margin:0 0 24px;font-size:18px;line-height:1.8;color:#4b5563;max-width:680px}.course-detail-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:16px;gap:16px;margin-bottom:24px}.course-detail-stat{background:#ffffff;border:1px solid #e5e7eb;border-radius:18px;padding:18px;box-shadow:0 10px 28px rgba(15,23,42,.05)}.course-detail-stat strong{display:block;font-size:24px;margin-bottom:6px}.course-detail-stat span{display:block;color:#6b7280;font-size:14px}.course-detail-actions{display:flex;gap:16px;flex-wrap:wrap}.course-detail-visual{display:flex;justify-content:center}.course-detail-image{width:100%;max-width:480px;border-radius:24px;box-shadow:0 22px 50px rgba(15,23,42,.16);object-fit:cover}.course-detail-content{display:grid;grid-template-columns:minmax(0,1fr) 320px;grid-gap:28px;gap:28px;align-items:start}.lesson-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));grid-gap:20px;gap:20px}.lesson-card{background:#ffffff;border:1px solid #e5e7eb;border-radius:20px;padding:22px;box-shadow:0 12px 30px rgba(15,23,42,.05);transition:transform .2s ease,box-shadow .2s ease}.lesson-card:hover{transform:translateY(-4px);box-shadow:0 18px 38px rgba(15,23,42,.09)}.lesson-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;flex-wrap:wrap}.lesson-number{display:inline-flex;align-items:center;justify-content:center;padding:7px 12px;border-radius:999px;background:#eef2ff;color:#4338ca;font-size:12px;font-weight:700}.lesson-duration{font-size:13px;font-weight:700;color:#374151}.lesson-card h3{margin:0 0 10px;font-size:22px;line-height:1.3}.lesson-card p{margin:0;line-height:1.7;color:#6b7280}.course-sidebar{position:-webkit-sticky;position:sticky;top:110px}.course-sidebar-card{background:#ffffff;border:1px solid #e5e7eb;border-radius:24px;padding:24px;box-shadow:0 14px 34px rgba(15,23,42,.06)}.course-sidebar-label{margin:0 0 8px;font-size:14px;font-weight:700;color:#6b7280}.course-sidebar-price{font-size:42px;font-weight:800;line-height:1;margin-bottom:14px}.course-sidebar-price-free{color:#166534}.course-sidebar-copy{margin:0 0 20px;line-height:1.7;color:#6b7280}.course-sidebar-btn{width:100%;margin-bottom:12px}.course-sidebar-meta{display:grid;grid-template-columns:1fr 1fr;grid-gap:12px;gap:12px;margin:0 0 20px}.course-sidebar-meta-item{background:#f8fafc;border:1px solid #e5e7eb;border-radius:16px;padding:14px}.course-sidebar-meta-item span{display:block;font-size:12px;color:#6b7280;margin-bottom:6px}.course-sidebar-meta-item strong{display:block;font-size:16px}.course-progress-panel{margin-bottom:28px}.progress-summary-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:16px;gap:16px;margin-bottom:18px}.progress-summary-card{background:#ffffff;border:1px solid #e5e7eb;border-radius:20px;padding:20px;box-shadow:0 12px 30px rgba(15,23,42,.05)}.progress-summary-card span{display:block;font-size:13px;font-weight:700;color:#6b7280;margin-bottom:8px}.progress-summary-card strong{display:block;font-size:30px;margin-bottom:8px}.progress-summary-card small{display:block;line-height:1.6;color:#6b7280}.progress-bar-shell{width:100%;height:12px;border-radius:999px;background:#e5e7eb;overflow:hidden;margin-bottom:18px}.progress-bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,#2563eb,#16a34a)}.progress-bar-fill-material{background:linear-gradient(90deg,#7c3aed,#2563eb)}.progress-bar-shell-tight{margin-bottom:0;height:10px}.progress-inline-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px}.progress-inline-head span{font-size:13px;font-weight:700;color:#6b7280}.progress-inline-head strong{font-size:14px}.progress-dual-shell{display:grid;grid-template-columns:1fr;grid-gap:16px;gap:16px;margin-bottom:18px}.progress-dual-item{background:#ffffff;border:1px solid #e5e7eb;border-radius:18px;padding:16px;box-shadow:0 10px 28px rgba(15,23,42,.04)}.current-lesson-card{background:#ffffff;border:1px solid #e5e7eb;border-radius:20px;padding:22px;box-shadow:0 12px 30px rgba(15,23,42,.05)}.current-lesson-card h3{margin:0 0 10px;font-size:24px}.current-lesson-card p{margin:0 0 14px;line-height:1.7;color:#6b7280}.current-lesson-meta{display:flex;gap:10px;flex-wrap:wrap}.current-lesson-meta span{display:inline-flex;padding:8px 12px;border-radius:999px;background:#eef2ff;font-size:13px;font-weight:700;color:#4338ca}.current-lesson-button{margin-top:16px}.curriculum-section-list{display:flex;flex-direction:column;gap:24px}.curriculum-section-card{background:#ffffff;border:1px solid #e5e7eb;border-radius:24px;padding:24px;box-shadow:0 12px 30px rgba(15,23,42,.05)}.curriculum-section-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:18px}.curriculum-section-head h3{margin:12px 0 10px;font-size:28px}.curriculum-section-head p{margin:0;line-height:1.7;color:#6b7280;max-width:760px}.curriculum-section-count{white-space:nowrap;padding:10px 14px;border-radius:999px;background:#eff6ff;color:#1d4ed8;font-weight:700;font-size:14px}.lesson-card-current{border-color:#bfdbfe;box-shadow:0 18px 38px rgba(37,99,235,.1)}.lesson-status-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}.lesson-status-pill{display:inline-flex;align-items:center;padding:7px 12px;border-radius:999px;background:#f3f4f6;color:#374151;font-size:12px;font-weight:700}.lesson-status-complete{background:#dcfce7;color:#166534}.lesson-status-preview{background:#fef3c7;color:#92400e}.lesson-material-inline{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}.lesson-open-link{display:inline-flex;margin-top:16px;font-weight:700;color:#2563eb}.lesson-open-link:hover{color:#1d4ed8}.lesson-progress-mini{margin-top:16px;padding:14px;border-radius:16px;background:#f8fafc;border:1px solid #e5e7eb}.lesson-progress-mini-text{display:block;margin-top:8px;font-size:12px;color:#6b7280}.material-chip{display:inline-flex;align-items:center;padding:7px 10px;border-radius:999px;background:#eef2ff;color:#4338ca;font-size:12px;font-weight:700}.section-head-spaced{margin-top:34px}.material-catalog{display:flex;flex-direction:column;gap:24px}.material-lesson-card{background:#ffffff;border:1px solid #e5e7eb;border-radius:24px;padding:24px;box-shadow:0 12px 30px rgba(15,23,42,.05)}.material-lesson-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:18px}.material-lesson-head h3{margin:0 0 10px;font-size:26px}.material-lesson-head p{margin:0;line-height:1.7;color:#6b7280}.material-list{display:grid;grid-gap:16px;gap:16px}.material-item{border:1px solid #e5e7eb;border-radius:20px;padding:20px;background:#f8fafc}.material-item-completed{border-color:#bbf7d0;background:#f0fdf4}.material-status-pill{margin-left:auto}.material-item-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px}.material-item p{margin:0 0 14px;line-height:1.7;color:#6b7280}.material-html-preview{padding:16px;border-radius:16px;background:#ffffff;border:1px solid #e5e7eb;line-height:1.7;color:#374151;margin-bottom:12px}.material-html-preview h2{margin-top:0;font-size:22px}.material-file-name{display:block;margin-bottom:12px;color:#6b7280}.material-link{display:inline-flex;align-items:center;justify-content:center;padding:10px 16px;border-radius:12px;background:#111827;color:#ffffff;font-weight:700}.material-link:hover{background:#1f2937}.dashboard-page{padding-top:12px}.dashboard-course-list{padding:8px 0 16px}.dashboard-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));grid-gap:24px;gap:24px}.dashboard-card{background:#ffffff;border:1px solid #e5e7eb;border-radius:24px;padding:24px;box-shadow:0 12px 30px rgba(15,23,42,.05)}.dashboard-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}.dashboard-card h3{margin:0 0 10px;font-size:28px}.dashboard-card p{margin:0 0 18px;line-height:1.7;color:#6b7280}.dashboard-meta-grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:12px;gap:12px;margin-bottom:18px}.dashboard-meta-grid div{background:#f8fafc;border:1px solid #e5e7eb;border-radius:16px;padding:14px}.dashboard-meta-grid span{display:block;font-size:12px;color:#6b7280;margin-bottom:6px}.dashboard-meta-grid strong{display:block;font-size:16px}.dashboard-action{width:100%}.dashboard-progress-group{margin-bottom:16px}.lesson-page{padding-top:12px}.lesson-hero{margin-bottom:32px;padding:36px;border-radius:28px;background:linear-gradient(135deg,#eff6ff,#ffffff 55%,#eef2ff);border:1px solid #dbeafe;box-shadow:0 18px 40px rgba(15,23,42,.06)}.lesson-hero-grid{display:grid;grid-template-columns:1.1fr .9fr;grid-gap:28px;gap:28px;align-items:start}.lesson-title{margin:0 0 16px;font-size:48px;line-height:1.08}.lesson-text{margin:0 0 24px;font-size:18px;line-height:1.8;color:#4b5563;max-width:760px}.lesson-hero-meta{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:16px;gap:16px;margin-bottom:24px}.lesson-hero-actions{display:flex;gap:16px;flex-wrap:wrap}.lesson-hero-progress-card{margin-bottom:24px;padding:18px;border-radius:18px;background:#ffffff;border:1px solid #e5e7eb;box-shadow:0 10px 28px rgba(15,23,42,.05)}.lesson-hero-progress-text{display:block;margin-top:8px;font-size:12px;color:#6b7280}.lesson-outline-card{background:#ffffff;border:1px solid #e5e7eb;border-radius:24px;padding:24px;box-shadow:0 14px 34px rgba(15,23,42,.06)}.lesson-outline-card h3{margin:0 0 10px;font-size:28px}.lesson-content-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;grid-gap:28px;gap:28px;align-items:start}.lesson-material-stack{display:flex;flex-direction:column;gap:24px}.lesson-live-progress-panel{margin-bottom:28px}.lesson-progress-shell{margin-bottom:16px}.lesson-progress-action-row{display:flex;gap:12px;flex-wrap:wrap}.lesson-complete-button{display:inline-flex;align-items:center;justify-content:center;padding:14px 18px;border:none;border-radius:12px;background:#16a34a;color:#ffffff;font-weight:700;cursor:pointer;transition:.2s ease}.lesson-complete-button:hover{background:#15803d}.lesson-complete-button:disabled{background:#94a3b8;cursor:not-allowed}.lesson-jump-button{display:inline-flex;align-items:center;justify-content:center;padding:14px 18px;border:1px solid #d1d5db;border-radius:12px;background:#ffffff;color:#111827;font-weight:700;cursor:pointer;transition:.2s ease}.lesson-jump-button:hover{background:#f3f4f6}.lesson-material-progress-card{background:#ffffff;border:1px solid #e5e7eb;border-radius:24px;padding:20px;box-shadow:0 12px 30px rgba(15,23,42,.05)}.lesson-material-progress-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:16px}.lesson-material-progress-head h3{margin:12px 0 0;font-size:26px}.lesson-material-progress-actions{margin-top:16px;display:flex;justify-content:flex-end}.lesson-current-state-note{margin-top:20px;padding:18px 20px;border-radius:18px;background:#eff6ff;border:1px solid #bfdbfe;line-height:1.7;color:#1e3a8a;font-weight:600}.lesson-material-viewer{background:#ffffff;border:1px solid #e5e7eb;border-radius:24px;padding:24px;box-shadow:0 12px 30px rgba(15,23,42,.05)}.lesson-viewer-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:14px}.lesson-viewer-head h3{margin:12px 0 0;font-size:28px}.lesson-viewer-copy{margin:0 0 18px;line-height:1.7;color:#6b7280}.lesson-html-renderer{padding:20px;border-radius:20px;background:#f8fafc;border:1px solid #e5e7eb;line-height:1.8;color:#374151}.lesson-html-renderer h2,.lesson-html-renderer h3{margin-top:0}.lesson-inline-image{width:100%;max-width:900px;height:auto;display:block;margin:20px auto;border-radius:12px;border:none;box-shadow:none;background:#ffffff;image-rendering:auto}.tutorial-image{margin:20px 0}.image-caption{margin:0;text-align:center;font-size:14px;line-height:1.7;color:#6b7280}.lesson-video-placeholder{display:flex;align-items:center;gap:18px;padding:20px;border-radius:20px;background:linear-gradient(135deg,#0f172a,#1d4ed8);color:#ffffff;margin-bottom:18px}.lesson-video-placeholder-icon{width:64px;height:64px;display:flex;align-items:center;justify-content:center;border-radius:999px;background:rgba(255,255,255,.18);font-size:24px;font-weight:800}.lesson-video-placeholder p{margin:8px 0 0;color:rgba(255,255,255,.86)}.lesson-file-card{display:flex;align-items:center;gap:16px;padding:18px;border-radius:20px;background:#f8fafc;border:1px solid #e5e7eb;margin-bottom:18px}.lesson-file-icon{min-width:68px;height:68px;display:flex;align-items:center;justify-content:center;border-radius:18px;background:#111827;color:#ffffff;font-weight:800;font-size:14px}.lesson-file-card p{margin:8px 0 0;line-height:1.6;color:#6b7280}.lesson-navigation{display:flex;justify-content:space-between;gap:16px;margin-top:28px;flex-wrap:wrap}.lesson-sidebar{position:-webkit-sticky;position:sticky;top:110px}.lesson-sidebar-card{background:#ffffff;border:1px solid #e5e7eb;border-radius:24px;padding:24px;box-shadow:0 14px 34px rgba(15,23,42,.06)}.lesson-sidebar-list{display:flex;flex-direction:column;gap:12px}.lesson-sidebar-item{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding:14px 16px;border-radius:18px;background:#f8fafc;border:1px solid #e5e7eb;color:#111827}.lesson-sidebar-item strong{display:block;margin-bottom:6px;font-size:14px;line-height:1.5}.lesson-sidebar-item span{display:block;font-size:12px;color:#6b7280}.lesson-sidebar-item small{font-size:12px;font-weight:700;color:#2563eb;white-space:nowrap}.lesson-sidebar-item-active{border-color:#bfdbfe;background:#eff6ff}.lesson-sidebar-item-current{border-color:#c7d2fe;background:#eef2ff}.lesson-sidebar-progress-text{display:block;margin-top:6px;font-style:normal;font-size:12px;color:#6b7280}.lesson-sidebar-status{display:inline-flex;align-items:center;justify-content:center;padding:7px 10px;border-radius:999px;background:#f3f4f6;color:#374151;min-width:72px}.lesson-sidebar-status-current{background:#dbeafe;color:#1d4ed8}.lesson-sidebar-status-done{background:#dcfce7;color:#166534}.lesson-outline-current{margin-top:4px;padding:16px;border-radius:18px;background:#eff6ff;border:1px solid #bfdbfe}.lesson-outline-current strong{display:block;font-size:16px;margin-bottom:6px}.lesson-outline-current small{display:block;font-size:12px;color:#4b5563}@media (max-width:991px){.course-detail-grid{grid-template-columns:1fr}.course-detail-title{font-size:40px}.course-detail-content,.course-detail-stats{grid-template-columns:1fr}.course-sidebar{position:static}.progress-summary-grid{grid-template-columns:1fr}.curriculum-section-head,.material-lesson-head{flex-direction:column}.lesson-content-layout,.lesson-hero-grid,.lesson-hero-meta{grid-template-columns:1fr}.lesson-sidebar{position:static}}@media (max-width:640px){.course-detail-hero{padding:22px;border-radius:22px}.course-detail-title{font-size:32px}.course-detail-text{font-size:16px}.lesson-card{padding:18px}.course-sidebar-card{padding:20px;border-radius:20px}.course-sidebar-price{font-size:34px}.course-sidebar-meta{grid-template-columns:1fr}.curriculum-section-card,.material-lesson-card{padding:20px;border-radius:20px}.dashboard-meta-grid{grid-template-columns:1fr}.lesson-hero{padding:22px;border-radius:22px}.lesson-title{font-size:32px}.lesson-text{font-size:16px}.lesson-material-viewer,.lesson-outline-card,.lesson-sidebar-card{padding:20px;border-radius:20px}.lesson-material-progress-card{padding:18px;border-radius:20px}.lesson-file-card,.lesson-video-placeholder{flex-direction:column;align-items:flex-start}}.courses-page{padding-top:12px}.courses-hero{margin-bottom:32px;padding:36px;border-radius:28px;background:linear-gradient(135deg,#ffffff,#eff6ff 55%,#eef2ff);border:1px solid #dbeafe;box-shadow:0 18px 40px rgba(15,23,42,.06)}.courses-hero-grid{display:grid;grid-template-columns:1.1fr .9fr;grid-gap:28px;gap:28px;align-items:center}.courses-title{margin:0 0 16px;font-size:52px;line-height:1.08}.courses-text{margin:0 0 24px;font-size:18px;line-height:1.8;color:#4b5563;max-width:720px}.courses-actions{display:flex;gap:16px;flex-wrap:wrap}.courses-summary-card{background:#ffffff;border:1px solid #e5e7eb;border-radius:24px;padding:24px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:16px;gap:16px;box-shadow:0 14px 34px rgba(15,23,42,.06)}.courses-summary-item{background:#f8fafc;border:1px solid #e5e7eb;border-radius:18px;padding:18px}.courses-summary-item strong{display:block;font-size:28px;margin-bottom:8px}.courses-summary-item span{display:block;font-size:14px;color:#6b7280}.courses-list-section{padding:8px 0 16px}@media (max-width:991px){.courses-hero-grid{grid-template-columns:1fr}.courses-title{font-size:40px}}@media (max-width:640px){.courses-hero{padding:22px;border-radius:22px}.courses-title{font-size:32px}.courses-text{font-size:16px}.courses-summary-card{grid-template-columns:1fr;padding:20px}}.auth-page{padding-top:12px}.auth-shell{padding:12px 0 20px}.auth-grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:28px;gap:28px;align-items:stretch}.auth-panel{border-radius:28px;padding:32px}.auth-panel-primary{background:linear-gradient(135deg,#0f172a,#1d4ed8);color:#ffffff;box-shadow:0 20px 50px rgba(15,23,42,.16)}.auth-panel-form{background:#ffffff;border:1px solid #e5e7eb;box-shadow:0 16px 40px rgba(15,23,42,.06)}.auth-badge{display:inline-block;padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.14);color:#ffffff;font-weight:700;margin-bottom:20px}.auth-title{margin:0 0 18px;font-size:46px;line-height:1.08}.auth-text{margin:0 0 24px;font-size:18px;line-height:1.8;color:rgba(255,255,255,.88);max-width:560px}.auth-feature-list{display:flex;flex-direction:column;gap:14px}.auth-feature-item{padding:14px 16px;border-radius:16px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.14);font-weight:600;line-height:1.6}.auth-form-head{margin-bottom:22px}.auth-eyebrow{margin:0 0 8px;font-size:14px;font-weight:700;color:#2563eb}.auth-form-head h2{margin:0 0 10px;font-size:30px;line-height:1.2}.auth-form-head p{margin:0;line-height:1.7;color:#6b7280}.auth-form{display:flex;flex-direction:column;gap:12px}.auth-label{font-size:14px;font-weight:700;color:#374151;margin-top:2px}.auth-input{width:100%;padding:14px 16px;border:1px solid #d1d5db;border-radius:14px;background:#ffffff;color:#111827;font-size:15px;outline:none;transition:border-color .2s ease,box-shadow .2s ease}.auth-input:focus{border-color:#2563eb;box-shadow:0 0 0 4px rgba(37,99,235,.12)}.auth-submit-button{margin-top:10px;width:100%;padding:15px 18px;border:none;border-radius:14px;background:#111827;color:#ffffff;font-weight:700;font-size:15px;cursor:pointer;transition:.2s ease}.auth-submit-button:hover{background:#1f2937}.auth-footer-note{margin-top:18px;display:flex;gap:8px;flex-wrap:wrap;font-size:14px;color:#6b7280}.auth-footer-note a{color:#2563eb;font-weight:700}@media (max-width:991px){.auth-grid{grid-template-columns:1fr}.auth-title{font-size:38px}}@media (max-width:640px){.auth-panel{padding:22px;border-radius:22px}.auth-title{font-size:30px}.auth-text{font-size:16px}.auth-form-head h2{font-size:24px}}.info-page{padding-top:12px}.info-hero{margin-bottom:32px;padding:36px;border-radius:28px;background:linear-gradient(135deg,#ffffff,#eff6ff 55%,#eef2ff);border:1px solid #dbeafe;box-shadow:0 18px 40px rgba(15,23,42,.06)}.info-hero-grid{display:grid;grid-template-columns:1.1fr .9fr;grid-gap:28px;gap:28px;align-items:center}.info-title{margin:0 0 16px;font-size:52px;line-height:1.08}.info-text{margin:0;font-size:18px;line-height:1.8;color:#4b5563;max-width:720px}.info-highlight-card{background:#ffffff;border:1px solid #e5e7eb;border-radius:24px;padding:24px;display:grid;grid-gap:16px;gap:16px;box-shadow:0 14px 34px rgba(15,23,42,.06)}.info-highlight-item{background:#f8fafc;border:1px solid #e5e7eb;border-radius:18px;padding:18px}.info-highlight-item strong{display:block;font-size:20px;margin-bottom:8px}.info-highlight-item span{display:block;line-height:1.7;color:#6b7280}.info-section-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:20px;gap:20px}.info-card{background:#ffffff;border:1px solid #e5e7eb;border-radius:24px;padding:24px;box-shadow:0 12px 30px rgba(15,23,42,.05)}.info-card h2{margin-top:0;margin-bottom:12px;font-size:28px}.info-card p{margin:0 0 12px;line-height:1.8;color:#6b7280}.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;grid-gap:24px;gap:24px;align-items:start}.contact-form{display:flex;flex-direction:column;gap:12px;margin-top:18px}.contact-textarea{width:100%;padding:14px 16px;border:1px solid #d1d5db;border-radius:14px;background:#ffffff;color:#111827;font-size:15px;font-family:Arial,sans-serif;outline:none;resize:vertical;transition:border-color .2s ease,box-shadow .2s ease}.contact-textarea:focus{border-color:#2563eb;box-shadow:0 0 0 4px rgba(37,99,235,.12)}@media (max-width:991px){.info-hero-grid{grid-template-columns:1fr}.info-title{font-size:40px}.contact-grid,.info-section-grid{grid-template-columns:1fr}}@media (max-width:640px){.info-hero{padding:22px;border-radius:22px}.info-title{font-size:32px}.info-text{font-size:16px}.info-card{padding:20px;border-radius:20px}}