:root{color:#162033;font-synthesis:none;background:#f6f8fb;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{margin:0}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.shell{width:min(1160px,100% - 32px);margin:0 auto}.site-header{z-index:20;background:#fff;border-bottom:1px solid #e8ebf0;height:70px;position:sticky;top:0}.nav-row{justify-content:space-between;align-items:center;height:100%;display:flex}.brand{flex:none;align-items:center;display:flex}.brand-logo{object-fit:contain;width:auto;max-width:220px;height:46px;display:block}.site-header nav{align-items:center;gap:24px;font-size:14px;font-weight:650;display:flex}.site-header nav a.active{color:#0f766e}.link-button{cursor:pointer;color:#4b5563;background:0 0;border:0}.hero{color:#fff;background:#101827;padding:74px 0}.hero-inner{grid-template-columns:1fr 220px;align-items:end;gap:50px;display:grid}.hero h1{letter-spacing:-.045em;max-width:760px;margin:12px 0 24px;font-size:clamp(40px,6vw,72px);line-height:.98}.hero p{color:#cbd5e1;max-width:700px;font-size:18px;line-height:1.75}.kicker{letter-spacing:.12em;text-transform:uppercase;color:#0f766e;font-size:12px;font-weight:800}.hero .kicker{color:#99f6e4}.hero-stat{border-left:1px solid #334155;flex-direction:column;padding-left:28px;display:flex}.hero-stat strong{letter-spacing:-.05em;font-size:54px}.hero-stat span{color:#94a3b8}.content-section{padding:48px 0 70px}.toolbar{gap:12px;margin-bottom:28px;display:flex}.toolbar input{flex:1}.toolbar input,.toolbar select,input,select,textarea{background:#fff;border:1px solid #d9dee7;border-radius:10px;outline:none;padding:12px 14px}.toolbar input:focus,.toolbar select:focus,input:focus,select:focus,textarea:focus{border-color:#5eead4;box-shadow:0 0 0 3px #ccfbf1}.video-grid{grid-template-columns:repeat(3,1fr);gap:22px;display:grid}.video-card{background:#fff;border:1px solid #e5e8ee;border-radius:16px;transition:transform .18s,box-shadow .18s;overflow:hidden}.video-card:hover{transform:translateY(-3px);box-shadow:0 16px 34px #0f172a14}.thumb-wrap{aspect-ratio:16/9;background:#dfe5ee;position:relative;overflow:hidden}.thumb-wrap img{object-fit:cover;width:100%;height:100%}.thumb-placeholder{color:#64748b;place-items:center;height:100%;font-size:36px;display:grid}.duration{color:#fff;background:#101827dd;border-radius:7px;padding:5px 8px;font-size:12px;position:absolute;bottom:10px;right:10px}.card-copy{padding:19px}.eyebrow{text-transform:uppercase;letter-spacing:.09em;color:#0f766e;font-size:12px;font-weight:800}.card-copy h3{margin:7px 0;font-size:20px;line-height:1.25}.card-copy p{color:#667085;min-height:48px;margin:0;line-height:1.55}.card-meta{border-top:1px solid #eef0f3;justify-content:space-between;margin-top:18px;padding-top:15px;display:flex}.owned{color:#15803d;background:#dcfce7;border-radius:99px;padding:4px 8px;font-size:12px}.detail-page{grid-template-columns:minmax(0,1fr) 330px;gap:38px;padding-top:42px;padding-bottom:80px;display:grid}.player{aspect-ratio:auto;object-fit:contain;background:#000;border-radius:16px;width:100%;height:auto;margin-bottom:28px;display:block}.locked-player{aspect-ratio:16/9;color:#fff;text-align:center;background:#0f172a 50%/cover;border-radius:16px;place-items:center;width:100%;margin-bottom:28px;display:grid}.lock-icon{color:#111827;background:#fff;border-radius:50%;place-items:center;width:62px;height:62px;margin:auto;display:grid}.detail-main h1{letter-spacing:-.035em;margin:10px 0 14px;font-size:42px;line-height:1.06}.lead{color:#667085;font-size:19px;line-height:1.6}.prose{white-space:pre-line;color:#374151;line-height:1.75}.purchase-card{background:#fff;border:1px solid #e5e8ee;border-radius:16px;height:max-content;padding:24px;position:sticky;top:94px}.price{margin-bottom:18px;font-size:34px;font-weight:800}.meta-line{border-top:1px solid #edf0f4;justify-content:space-between;padding:12px 0;font-size:14px;display:flex}.purchase-card label,.creator-form label,.form-card label{margin:16px 0 7px;font-size:13px;font-weight:750;display:block}.purchase-card input,.creator-form input,.creator-form select,.creator-form textarea,.form-card input{width:100%}.button{cursor:pointer;text-align:center;border:0;border-radius:10px;padding:12px 16px;font-weight:750;display:inline-block}.button.primary{color:#fff;background:#0f766e;width:100%;margin-top:14px}.notice{border-radius:10px;margin-top:14px;padding:12px 14px;font-size:14px}.notice.error{color:#9a3412;background:#fff7ed}.notice.success{color:#166534;background:#ecfdf3}.empty{text-align:center;color:#64748b;padding:50px}.section-heading h1{margin:8px 0 25px;font-size:42px}.auth-wrap{place-items:center;min-height:calc(100vh - 70px);padding:32px;display:grid}.form-card{background:#fff;border:1px solid #e5e8ee;border-radius:18px;width:min(420px,100%);padding:30px}.form-card h1{margin:8px 0 24px}.creator-layout{grid-template-columns:minmax(0,1fr) 390px;gap:36px;display:grid}.creator-layout h1{margin:8px 0 10px;font-size:42px}.creator-form{background:#fff;border:1px solid #e5e8ee;border-radius:16px;margin-top:24px;padding:24px}.form-row{grid-template-columns:1fr 1fr;gap:14px;display:grid}.checkbox{align-items:center;gap:9px;display:flex!important}.checkbox input{width:auto}.progress{background:#e8edf5;border-radius:10px;height:36px;margin-top:15px;position:relative;overflow:hidden}.progress div{background:#0f766e;height:100%;transition:width .2s}.progress span{color:#fff;place-items:center;font-size:12px;font-weight:800;display:grid;position:absolute;inset:0}.creator-list{background:#fff;border:1px solid #e5e8ee;border-radius:16px;height:max-content;margin-top:39px;padding:20px}.creator-list h2{margin-top:0}.creator-item{border-top:1px solid #edf0f4;justify-content:space-between;gap:14px;padding:15px 0;display:flex}.creator-item div{flex-direction:column;gap:5px;display:flex}.creator-item span{color:#667085;font-size:12px}.status{background:#f1f5f9;border-radius:99px;align-self:start;padding:4px 8px}.status.published{color:#166534;background:#dcfce7}.status.processing{color:#92400e;background:#fef3c7}.status.failed{color:#9a3412;background:#ffedd5}@media (width<=850px){.video-grid{grid-template-columns:repeat(2,1fr)}.hero-inner,.detail-page,.creator-layout{grid-template-columns:1fr}.hero-stat{display:none}.purchase-card{position:static}.creator-list{margin-top:0}}@media (width<=600px){.site-header nav{gap:13px;font-size:12px}.video-grid{grid-template-columns:1fr}.toolbar{flex-direction:column}.hero{padding:55px 0}.hero h1{font-size:46px}.detail-main h1,.creator-layout h1{font-size:34px}.detail-page{padding-top:24px}.form-row{grid-template-columns:1fr}.shell{width:min(100% - 22px,1160px)}}.type-switch{background:#e9eef5;border-radius:12px;gap:8px;width:max-content;max-width:100%;margin-top:22px;padding:5px;display:flex}.type-switch button{cursor:pointer;color:#526071;background:0 0;border:0;border-radius:8px;padding:10px 14px;font-weight:750}.type-switch button.active{color:#111827;background:#fff;box-shadow:0 1px 4px #0f172a14}.creator-list form input,.creator-list form select,.creator-list form textarea{width:100%}.creator-list form label{margin:13px 0 6px;font-size:13px;font-weight:750;display:block}.button.secondary{color:#fff;background:#111827;margin-top:14px}.topic-create-panel{margin-top:39px}.creator-layout aside .creator-list+.creator-list{margin-top:20px}.small{font-size:13px;line-height:1.5}.inline-help,.file-meta{color:#667085;margin-top:9px;font-size:13px}.part-badge{color:#111827;background:#fff;border-radius:7px;padding:5px 8px;font-size:12px;font-weight:800;position:absolute;top:10px;left:10px}.topic-strip{gap:10px;padding:0 0 24px;display:flex;overflow:auto}.topic-pill{background:#fff;border:1px solid #e5e8ee;border-radius:12px;flex-direction:column;gap:4px;min-width:185px;padding:12px 14px;display:flex}.topic-pill span{color:#667085;font-size:12px}.toolbar.three select{min-width:180px}.topic-heading{max-width:760px;margin-bottom:32px}.topic-heading h1{letter-spacing:-.035em;margin:8px 0 14px;font-size:48px}.topic-heading p{color:#667085;font-size:18px;line-height:1.65}.topic-rule{color:#0f766e;background:#eef6ff;border-radius:9px;margin-top:8px;padding:9px 12px;font-size:13px;font-weight:700;display:inline-block}.back-link{color:#667085;margin-bottom:26px;display:inline-block}.topic-context{align-items:center;gap:10px;margin-top:12px;font-weight:700;display:flex}.topic-context a{color:#0f766e}.topic-context span{background:#eef2ff;border-radius:99px;padding:5px 8px;font-size:12px}.series-nav{border-top:1px solid #e5e8ee;grid-template-columns:1fr 1fr;gap:18px;margin-top:34px;padding-top:22px;display:grid}.series-nav a{color:#0f766e;font-weight:700;line-height:1.45}.series-nav a:last-child{text-align:right}@media (width<=850px){.topic-create-panel{margin-top:0}.toolbar.three{flex-wrap:wrap}.toolbar.three input{flex-basis:100%}}@media (width<=600px){.type-switch{flex-direction:column;width:100%}.topic-heading h1{font-size:38px}.series-nav{grid-template-columns:1fr}.series-nav a:last-child{text-align:left}}.topic-capacity{color:#475467;background:#f8fafc;border:1px solid #e5e7eb;border-radius:9px;margin-top:10px;padding:10px 12px;font-size:13px}.home-hero{color:#fff;background:#101827;padding:82px 0 76px}.home-hero-inner{grid-template-columns:minmax(0,1fr) 320px;align-items:center;gap:64px;display:grid}.home-hero h1{letter-spacing:-.05em;max-width:820px;margin:14px 0 24px;font-size:clamp(44px,6vw,76px);line-height:.98}.home-hero p{color:#cbd5e1;max-width:760px;font-size:18px;line-height:1.75}.home-actions{flex-wrap:wrap;gap:12px;margin-top:30px;display:flex}.button.home-primary{color:#fff;background:#0f766e;padding:13px 18px}.button.home-secondary{color:#111827;background:#fff;padding:13px 18px}.home-rule-card{background:#172235;border:1px solid #2a3a52;border-radius:20px;padding:28px}.home-rule-label{color:#99f6e4;text-transform:uppercase;letter-spacing:.1em;margin-bottom:10px;font-size:11px;font-weight:800;display:block}.home-rule-number{letter-spacing:-.06em;font-size:70px;font-weight:850;line-height:1}.home-rule-number.small-number{margin-top:18px;font-size:50px}.home-rule-card strong{margin-top:4px;display:block}.home-rule-divider{background:#334155;height:1px;margin:24px 0 0}.home-section{padding:70px 0}.home-section-heading{max-width:760px;margin-bottom:34px}.home-section-heading h2,.home-cta h2{letter-spacing:-.035em;margin:10px 0 14px;font-size:42px;line-height:1.08}.home-section-heading p{color:#667085;font-size:18px;line-height:1.65}.feature-grid{grid-template-columns:repeat(3,1fr);gap:20px;display:grid}.feature-card{background:#fff;border:1px solid #e5e8ee;border-radius:16px;padding:26px}.feature-icon{color:#0f766e;background:#ecfdf5;border-radius:11px;place-items:center;width:42px;height:42px;font-size:13px;font-weight:850;display:grid}.feature-card h3{margin:18px 0 9px;font-size:22px}.feature-card p{color:#667085;margin:0;line-height:1.65}.home-cta{background:#ecfdf5;padding:54px 0}.home-cta-inner{justify-content:space-between;align-items:center;gap:30px;display:flex}.home-cta h2{max-width:720px;margin-bottom:0}.page-hero{color:#fff;background:#101827;padding:68px 0}.compact-hero h1{letter-spacing:-.045em;max-width:850px;margin:12px 0 18px;font-size:clamp(40px,5vw,62px);line-height:1.02}.compact-hero p{color:#cbd5e1;max-width:780px;font-size:18px;line-height:1.75}.about-layout{grid-template-columns:minmax(0,1fr) 340px;gap:48px;padding-top:58px;padding-bottom:80px;display:grid}.about-block{background:#fff;border:1px solid #e5e8ee;border-radius:16px;margin-bottom:20px;padding:28px}.about-block h2{letter-spacing:-.025em;margin:0 0 12px;font-size:28px}.about-block p{color:#667085;margin:0;line-height:1.75}.about-rules{grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px;display:grid}.about-rules div{background:#f8fafc;border:1px solid #e5e7eb;border-radius:12px;padding:16px}.about-rules strong,.about-rules span{display:block}.about-rules strong{font-size:16px}.about-rules span{color:#667085;margin-top:6px;font-size:13px;line-height:1.45}.about-side-card{background:#fff;border:1px solid #e5e8ee;border-radius:16px;height:max-content;padding:26px;position:sticky;top:94px}.about-side-card h3{margin:10px 0 12px;font-size:25px;line-height:1.15}.about-side-card p{color:#667085;margin-bottom:16px;line-height:1.65}@media (width<=950px){.site-header{height:auto;min-height:70px}.nav-row{gap:18px;padding:12px 0}.site-header nav{flex-wrap:wrap;justify-content:flex-end;gap:14px}.home-hero-inner,.about-layout{grid-template-columns:1fr}.home-rule-card{max-width:460px}.about-side-card{position:static}.about-rules{grid-template-columns:1fr}}@media (width<=700px){.nav-row{align-items:flex-start}.site-header nav{gap:10px;font-size:12px}.home-hero{padding:58px 0}.home-hero h1{font-size:48px}.home-section{padding:52px 0}.feature-grid{grid-template-columns:1fr}.home-cta-inner{flex-direction:column;align-items:flex-start}.home-section-heading h2,.home-cta h2{font-size:34px}.compact-hero h1{font-size:42px}.about-layout{padding-top:34px}}@media (width<=600px){.brand-logo{max-width:175px;height:38px}}.topic-dashboard-card{color:inherit;text-decoration:none;transition:transform .18s,box-shadow .18s;display:block}.topic-dashboard-card:hover{transform:translateY(-2px);box-shadow:0 12px 28px #0f172a1a}.topic-dashboard-category{letter-spacing:.03em;text-transform:uppercase;color:#0f766e;margin-bottom:.65rem;font-size:.78rem;font-weight:700;display:inline-block}.topic-dashboard-count{color:#475569;margin-top:.9rem;font-size:.85rem;font-weight:700;display:block}.home-topics-more{margin-top:1.5rem}.menu-toggle{cursor:pointer;background:#fff;border:1px solid #dfe4ea;border-radius:10px;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:44px;height:44px;padding:10px;display:none}.menu-toggle span{background:#162033;border-radius:2px;width:22px;height:2px;display:block}@media (width<=700px){.site-header{height:70px;min-height:70px}.nav-row{align-items:center;gap:12px;height:70px;padding:0;position:relative}.brand-logo{max-width:175px;height:38px}.menu-toggle{margin-left:auto;display:flex}.site-header nav{z-index:30;background:#fff;border:1px solid #e5e8ee;border-top:0;border-radius:0 0 14px 14px;flex-direction:column;align-items:stretch;gap:4px;padding:12px;font-size:15px;display:none;position:absolute;top:calc(100% + 1px);left:0;right:0;box-shadow:0 16px 30px #0f172a1f}.site-header nav.nav-open{display:flex}.site-header nav a,.site-header nav .link-button{text-align:left;border-radius:9px;width:100%;padding:12px 14px;display:block}.site-header nav a:hover,.site-header nav a.active,.site-header nav .link-button:hover{color:#0f766e;background:#f0fdfa}.site-header nav .link-button{font-size:15px}}.chapter-card-label{color:#64748b;margin-top:7px;font-size:12px;font-weight:700;display:block}.video-hero-simple{grid-template-columns:1fr}.topic-summary-line{color:#64748b;align-items:center;gap:8px;margin-top:14px;font-size:14px;display:flex}.topic-summary-line strong{color:#162033}.contents-panel{background:#fff;border:1px solid #e5e8ee;border-radius:18px;max-width:900px;overflow:hidden}.contents-header{border-bottom:1px solid #edf0f4;justify-content:space-between;align-items:end;gap:20px;padding:24px 26px;display:flex}.contents-header h2{margin:6px 0 0;font-size:28px}.contents-header>span{color:#667085;font-size:14px}.contents-search{width:calc(100% - 52px);margin:20px 26px;display:block}.chapter-list{border-top:1px solid #edf0f4}.chapter-block+.chapter-block{border-top:1px solid #e5e8ee}.chapter-toggle{cursor:pointer;text-align:left;color:#162033;background:#fff;border:0;grid-template-columns:48px 1fr 28px;align-items:center;gap:14px;width:100%;padding:20px 24px;display:grid}.chapter-toggle:hover{background:#f8fafc}.chapter-number{border:3px solid #dfe4ea;border-radius:50%;place-items:center;width:44px;height:44px;font-weight:800;display:grid}.chapter-title-wrap{flex-direction:column;gap:4px;display:flex}.chapter-title-wrap strong{font-size:20px}.chapter-title-wrap small{color:#667085}.chapter-chevron{text-align:center;color:#475569;font-size:24px}.lesson-list{background:#fff;padding:0 24px 18px 82px}.lesson-row{border-top:1px solid #eef0f3;grid-template-columns:34px 1fr 20px;align-items:center;gap:12px;padding:15px 0;display:grid}.lesson-row:hover .lesson-copy strong{color:#0f766e}.lesson-index{color:#0f766e;background:#ecfdf5;border-radius:50%;place-items:center;width:28px;height:28px;font-size:12px;font-weight:800;display:grid}.lesson-copy{flex-direction:column;gap:4px;display:flex}.lesson-copy strong{line-height:1.35}.lesson-copy small{color:#667085}.lesson-arrow{color:#94a3b8;font-size:25px}.video-chapter-title{color:#667085;margin-top:18px;font-weight:700}.topic-context{flex-wrap:wrap}@media (width<=600px){.contents-header{flex-direction:column;align-items:flex-start;padding:20px}.contents-header h2{font-size:24px}.contents-search{width:calc(100% - 40px);margin:16px 20px}.chapter-toggle{grid-template-columns:42px 1fr 24px;gap:10px;padding:18px 16px}.chapter-number{width:38px;height:38px}.chapter-title-wrap strong{font-size:17px}.lesson-list{padding:0 16px 12px 58px}.lesson-row{grid-template-columns:28px 1fr 14px}.lesson-copy strong{font-size:15px}.topic-detail-page{padding-top:30px}}.notice.info{color:#1d4ed8;background:#eff6ff}.full-button{width:100%;margin-top:10px;display:block}.compact-copy{margin:16px 0 0;font-size:14px;line-height:1.55}.topic-toolbar select{min-width:220px}.topic-product-grid{grid-template-columns:repeat(3,1fr);gap:22px;display:grid}.topic-product-card{background:#fff;border:1px solid #e5e8ee;border-radius:16px;flex-direction:column;min-height:290px;padding:24px;transition:transform .18s,box-shadow .18s;display:flex}.topic-product-card:hover{transform:translateY(-3px);box-shadow:0 16px 34px #0f172a14}.topic-product-top{justify-content:space-between;align-items:center;gap:12px;display:flex}.topic-product-card h3{margin:12px 0 10px;font-size:24px;line-height:1.2}.topic-product-card p{color:#667085;margin:0 0 20px;line-height:1.6}.topic-product-stats{flex-wrap:wrap;gap:8px;margin-top:auto;display:flex}.topic-product-stats span{color:#475569;background:#f8fafc;border:1px solid #e5e7eb;border-radius:99px;padding:6px 9px;font-size:12px;font-weight:700}.topic-product-price{border-top:1px solid #eef0f3;justify-content:space-between;align-items:center;gap:12px;margin-top:18px;padding-top:16px;display:flex}.topic-product-price strong{font-size:24px}.topic-product-price span{color:#0f766e;font-size:13px;font-weight:750}.topic-detail-grid{grid-template-columns:minmax(0,1fr) 330px;align-items:start;gap:34px;display:grid}.topic-purchase-card{top:94px}.library-topic{margin-bottom:52px}.library-topic-heading{border-bottom:1px solid #e5e8ee;justify-content:space-between;align-items:end;gap:20px;margin-bottom:18px;padding-bottom:14px;display:flex}.library-topic-heading h2{margin:6px 0 0;font-size:28px}.library-topic-heading>a{color:#0f766e;font-size:14px;font-weight:750}.creator-list .button.secondary{width:100%;margin-top:14px}.button.secondary{color:#0f766e;background:#fff;border:1px solid #99d5cf}.inline-help{color:#667085;margin-top:8px;font-size:13px;line-height:1.5}.file-meta{color:#475569;margin-top:9px;font-size:13px}@media (width<=900px){.topic-product-grid{grid-template-columns:repeat(2,1fr)}.topic-detail-grid{grid-template-columns:1fr}.topic-purchase-card{position:static}}@media (width<=600px){.topic-product-grid{grid-template-columns:1fr}.library-topic-heading{flex-direction:column;align-items:flex-start}.topic-toolbar select{min-width:0}.topic-product-card{min-height:0}}.home-exam-strip{background:#f8fafc;border-top:1px solid #e5e8ee;border-bottom:1px solid #e5e8ee;padding:52px 0}.home-exam-strip-inner{justify-content:space-between;align-items:center;gap:32px;display:flex}.home-exam-strip h2{margin:8px 0 10px;font-size:36px}.home-exam-strip p{color:#667085;max-width:700px;margin:0;line-height:1.65}.exam-hero{color:#fff;background:linear-gradient(135deg,#0f172a,#163b3b);padding:68px 0}.exam-hero-inner{justify-content:space-between;align-items:center;gap:40px;display:flex}.exam-hero h1{letter-spacing:-.045em;max-width:800px;margin:12px 0 18px;font-size:clamp(42px,5vw,64px);line-height:1.02}.exam-hero p{color:#d7e2e7;max-width:760px;font-size:18px;line-height:1.7}.exam-hero-actions{flex:none}.exam-section-heading{margin-bottom:20px}.exam-toolbar{margin-bottom:28px}.exam-toolbar select{min-width:220px}.exam-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;display:grid}.exam-card{background:#fff;border:1px solid #e5e8ee;border-radius:18px;flex-direction:column;min-height:300px;padding:24px;display:flex;box-shadow:0 4px 14px #0f172a08}.exam-card.compact{min-height:230px}.exam-card-top{justify-content:space-between;align-items:center;gap:12px;display:flex}.exam-ready,.exam-not-ready{border-radius:999px;padding:5px 9px;font-size:11px;font-weight:800;display:inline-flex}.exam-ready{color:#0f766e;background:#ecfdf5}.exam-not-ready{color:#c2410c;background:#fff7ed}.exam-card h3{margin:14px 0 10px;font-size:23px;line-height:1.25}.exam-card p{color:#667085;margin:0 0 20px;line-height:1.6}.exam-meta-row{flex-wrap:wrap;gap:7px;margin-top:auto;display:flex}.exam-meta-row span{color:#475569;background:#f8fafc;border:1px solid #e5e7eb;border-radius:999px;padding:6px 9px;font-size:12px;font-weight:750}.exam-card-bottom{border-top:1px solid #eef0f3;justify-content:space-between;align-items:center;gap:12px;margin-top:18px;padding-top:16px;font-size:13px;display:flex}.exam-card-bottom>span{color:#667085;font-weight:650}.exam-card-bottom a{color:#0f766e;font-weight:800}.exam-detail-page{padding-top:44px}.exam-detail-grid{grid-template-columns:minmax(0,1fr) 340px;align-items:start;gap:42px;display:grid}.exam-detail-grid h1{letter-spacing:-.04em;margin:10px 0 14px;font-size:clamp(38px,5vw,58px);line-height:1.05}.exam-lead{color:#667085;max-width:820px;font-size:18px;line-height:1.7}.exam-facts{grid-template-columns:repeat(4,1fr);gap:12px;margin:28px 0;display:grid}.exam-facts div{background:#f8fafc;border:1px solid #e5e7eb;border-radius:14px;padding:17px}.exam-facts strong,.exam-facts span{display:block}.exam-facts strong{font-size:21px}.exam-facts span{color:#667085;margin-top:4px;font-size:12px}.exam-subject-content{gap:16px;margin-top:24px;display:grid}.exam-info-block{background:#fff;border:1px solid #e5e8ee;border-radius:16px;padding:22px}.exam-info-block h3{margin:0 0 10px;font-size:20px}.exam-info-block p,.exam-info-block li{color:#5d6878;line-height:1.7}.exam-info-block ul{margin:0;padding-left:20px}.exam-action-card{background:#fff;border:1px solid #e5e8ee;border-radius:18px;padding:24px;position:sticky;top:92px;box-shadow:0 12px 30px #0f172a0f}.exam-action-card h2{margin:14px 0 10px;font-size:26px}.exam-action-card p{color:#667085;line-height:1.6}.exam-latest-result{background:#f8fafc;border:1px solid #e5e7eb;border-radius:12px;justify-content:space-between;align-items:center;margin:14px 0;padding:13px;display:flex}.exam-latest-result strong{font-size:18px}.exam-latest-result span{color:#0f766e;font-weight:800}.exam-instructions-page{max-width:980px}.exam-instructions-card{background:#fff;border:1px solid #e5e8ee;border-radius:20px;padding:34px}.exam-instructions-card h1{margin:10px 0;font-size:38px}.back-link{color:#0f766e;margin-bottom:18px;font-weight:750;display:inline-block}.instruction-list{color:#475569;padding-left:24px;line-height:1.75}.instruction-list li{margin-bottom:10px}.exam-guide-wrap{text-align:center;background:#f8fafc;border:1px solid #e5e7eb;border-radius:16px;margin:26px 0;padding:18px}.exam-guide-wrap img{border-radius:10px;max-width:100%;max-height:420px}.exam-agree{align-items:flex-start;gap:10px;margin:20px 0;font-weight:650;display:flex}.exam-agree input{margin-top:4px}.exam-history-section{margin-top:48px}.exam-history-section h2{font-size:28px}.exam-results-table-wrap{border:1px solid #e5e8ee;border-radius:14px;overflow:auto}.exam-results-table{border-collapse:collapse;background:#fff;width:100%}.exam-results-table th,.exam-results-table td{text-align:left;white-space:nowrap;border-bottom:1px solid #eef0f3;padding:13px 15px}.exam-results-table th{text-transform:uppercase;letter-spacing:.04em;color:#667085;background:#f8fafc;font-size:12px}.result-pill{border-radius:999px;padding:5px 9px;font-size:11px;font-weight:850;display:inline-flex}.result-pill.pass{color:#0f766e;background:#ecfdf5}.result-pill.fail{color:#b91c1c;background:#fef2f2}.exam-taking-page{background:#f6f8fb;min-height:calc(100vh - 70px);padding:28px 0 60px}.exam-taking-shell{max-width:1200px}.exam-taking-header{justify-content:space-between;align-items:center;gap:24px;margin-bottom:22px;display:flex}.exam-taking-header h1{margin:4px 0;font-size:28px}.exam-timer{text-align:right;background:#fff;border:1px solid #dbe3ea;border-radius:14px;min-width:120px;padding:10px 16px}.exam-timer span,.exam-timer strong{display:block}.exam-timer span{text-transform:uppercase;color:#667085;font-size:11px}.exam-timer strong{font-variant-numeric:tabular-nums;font-size:24px}.exam-timer.warning{background:#fffbeb;border-color:#f59e0b}.exam-taking-layout{grid-template-columns:250px minmax(0,1fr);align-items:start;gap:20px;display:grid}.question-navigator,.question-card{background:#fff;border:1px solid #e5e8ee;border-radius:18px}.question-navigator{padding:20px;position:sticky;top:92px}.question-navigator h3{margin:0 0 14px}.question-dot-grid{grid-template-columns:repeat(5,1fr);gap:7px;display:grid}.question-dot-grid button{color:#475569;cursor:pointer;background:#f8fafc;border:1px solid #d7dde5;border-radius:50%;height:36px;font-weight:800}.question-dot-grid button.answered{color:#0f766e;background:#ecfdf5;border-color:#99d5cf}.question-dot-grid button.current{color:#fff;background:#1d4ed8;border-color:#1d4ed8}.navigator-legend{color:#667085;gap:7px;margin-top:18px;font-size:11px;display:grid}.navigator-legend span{align-items:center;gap:7px;display:flex}.legend-dot{background:#f8fafc;border:1px solid #d7dde5;border-radius:50%;width:10px;height:10px}.legend-dot.answered{background:#ecfdf5;border-color:#99d5cf}.legend-dot.current{background:#1d4ed8;border-color:#1d4ed8}.question-card{padding:28px}.question-heading{color:#667085;justify-content:space-between;gap:20px;font-size:13px;font-weight:700;display:flex}.question-card h2{margin:20px 0 24px;font-size:26px;line-height:1.42}.choice-list{gap:11px;display:grid}.choice-option{cursor:pointer;border:1px solid #dfe4ea;border-radius:13px;align-items:flex-start;gap:12px;padding:15px;display:flex}.choice-option:hover,.choice-option.selected{background:#f0fdfa;border-color:#0f766e}.choice-option input{margin-top:4px}.structured-answer-grid{gap:14px;display:grid}.structured-answer-grid label{color:#344054;font-weight:700}.structured-answer-grid input{width:100%;margin-top:7px;display:block}.sequence-answer-list{gap:10px;display:grid}.sequence-answer-item{background:#fff;border:1px solid #dfe4ea;border-radius:12px;grid-template-columns:28px 28px 1fr auto;align-items:center;gap:10px;padding:11px;display:grid}.sequence-handle{color:#94a3b8;cursor:grab}.sequence-move{gap:5px;display:flex}.sequence-move button,.mini-actions button{cursor:pointer;background:#fff;border:1px solid #dfe4ea;border-radius:8px;padding:6px 9px}.sequence-move button:disabled{opacity:.35}.question-actions{border-top:1px solid #eef0f3;justify-content:flex-end;gap:9px;margin-top:28px;padding-top:20px;display:flex}.exam-result-page{max-width:1050px}.result-summary-card{border:1px solid #e5e8ee;border-radius:20px;justify-content:space-between;align-items:center;gap:28px;padding:28px;display:flex}.result-summary-card.pass{background:#f0fdf4}.result-summary-card.fail{background:#fff7f7}.result-summary-card h1{margin:8px 0;font-size:34px}.result-score{text-align:right}.result-score strong,.result-score span,.result-score b{display:block}.result-score strong{letter-spacing:-.04em;font-size:48px}.result-score span{color:#667085}.result-score b{margin-top:8px}.result-actions{gap:10px;margin:18px 0 36px;display:flex}.result-review-list{gap:14px;display:grid}.result-review-list>h2{font-size:28px}.result-review-card{background:#fff;border:1px solid #e5e8ee;border-radius:16px;padding:20px}.result-review-card.correct{border-left:5px solid #16a34a}.result-review-card.incorrect{border-left:5px solid #dc2626}.result-question-title{align-items:flex-start;gap:12px;display:flex}.result-question-title>span{color:#1d4ed8;background:#eff6ff;border-radius:50%;flex:none;place-items:center;width:30px;height:30px;font-weight:850;display:grid}.result-question-title h3{margin:2px 0 14px;font-size:18px;line-height:1.45}.answer-review-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.answer-review-grid>div{background:#f8fafc;border-radius:12px;gap:4px;padding:13px;display:grid}.answer-review-grid small{color:#667085;text-transform:uppercase;font-size:10px;font-weight:700}.sequence-comparison{gap:7px;display:grid}.sequence-comparison>div{background:#f8fafc;border-radius:10px;grid-template-columns:30px 1fr 1fr;gap:8px;padding:9px;display:grid}.position-correct{color:#166534}.position-wrong{color:#991b1b}.answer-verdict{margin-top:14px;font-weight:800}.creator-suite-switch,.creator-suite-heading{justify-content:space-between;align-items:center;gap:20px;margin-bottom:24px;display:flex}.creator-suite-switch{background:#f8fafc;border:1px solid #dfe4ea;border-radius:14px;padding:14px}.creator-suite-switch strong{margin-top:4px;font-size:20px;display:block}.creator-suite-heading h1{margin:8px 0 6px;font-size:40px}.exam-creator-stats{grid-template-columns:repeat(4,1fr);gap:12px;margin:20px 0;display:grid}.exam-creator-stats div{background:#fff;border:1px solid #e5e8ee;border-radius:14px;padding:16px}.exam-creator-stats strong,.exam-creator-stats span{display:block}.exam-creator-stats strong{font-size:28px}.exam-creator-stats span{color:#667085;font-size:12px}.creator-tabs{flex-wrap:wrap;gap:8px;margin:22px 0;display:flex}.creator-tabs button{cursor:pointer;background:#fff;border:1px solid #dfe4ea;border-radius:999px;padding:9px 14px;font-weight:750}.creator-tabs button.active{color:#fff;background:#0f766e;border-color:#0f766e}.exam-creator-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start;gap:22px;display:grid}.exam-creator-page .creator-list{background:#fff;border:1px solid #e5e8ee;border-radius:16px;padding:22px}.exam-creator-item{align-items:flex-start}.mini-actions{flex:none;gap:6px;display:flex}.mini-actions button.danger{color:#b91c1c}.form-button-row{flex-wrap:wrap;gap:8px;display:flex}.access-toolbar{align-items:end;gap:14px;margin-bottom:20px;display:flex}.access-toolbar>div{flex:1}.question-bank-tools{margin-bottom:24px}.question-bank-tools-heading{margin-bottom:20px}.question-bank-tools-heading h2{color:#0f172a;margin:5px 0 6px;font-size:24px}.question-bank-tools-heading p{color:#667085;max-width:720px;margin:0;line-height:1.55}.question-bank-tools-grid{grid-template-columns:minmax(190px,.8fr) minmax(300px,1.5fr) minmax(190px,.8fr);align-items:stretch;gap:16px;display:grid}.question-bank-tool-card{background:#f8fafc;border:1px solid #e2e8f0;border-radius:14px;flex-direction:column;gap:10px;padding:18px;display:flex}.question-bank-tool-card label{color:#0f172a;font-size:14px;font-weight:750}.question-bank-tool-card select,.question-bank-tool-card input[type=file]{width:100%}.question-bank-tool-card select{background:#fff;min-height:44px}.question-bank-tool-card input[type=file]{background:#fff;border:1px solid #d7dde5;border-radius:10px;padding:9px}.question-bank-tool-card small{color:#667085;font-size:12px;line-height:1.45}.question-bank-tool-card .button{width:100%;margin-top:auto}.selected-csv-file{overflow-wrap:anywhere;font-weight:700;color:#0f766e!important}.question-bank-tool-card .button:disabled{opacity:.5;cursor:not-allowed}.question-bank-list{gap:10px;max-height:900px;display:grid;overflow:auto}.question-bank-item{border-bottom:1px solid #eef0f3;justify-content:space-between;gap:14px;padding:12px 0;display:flex}.question-bank-item>div:first-child{gap:5px;display:grid}.question-bank-item strong{line-height:1.4}.question-bank-item small{color:#667085}.question-type-pill{color:#1d4ed8;background:#eff6ff;border-radius:999px;width:max-content;padding:4px 8px;font-size:10px;font-weight:800}.question-choice-editor{gap:8px;display:grid}.choice-editor-row{grid-template-columns:28px 1fr;align-items:center;gap:8px;display:grid}.choice-editor-row strong{text-align:center}.access-row{border-bottom:1px solid #eef0f3;grid-template-columns:minmax(0,1fr) auto 150px;align-items:center;gap:12px;padding:12px 0;display:grid}.access-row>div{display:grid}.access-row small{color:#667085}.access-row label{font-size:12px;font-weight:700}.access-row label:last-child{grid-template-columns:1fr 70px;align-items:center;gap:8px;display:grid}.access-row input[type=number]{padding:7px}.muted{color:#667085}@media (width<=1000px){.exam-grid{grid-template-columns:repeat(2,1fr)}.exam-detail-grid{grid-template-columns:1fr}.exam-action-card{position:static}.exam-taking-layout{grid-template-columns:1fr}.question-navigator{position:static}.question-dot-grid{grid-template-columns:repeat(10,1fr)}.exam-creator-grid{grid-template-columns:1fr}.access-toolbar{flex-direction:column;align-items:stretch}.question-bank-tools-grid{grid-template-columns:1fr 1fr}.question-bank-export-card{grid-column:1/-1}}@media (width<=700px){.home-exam-strip-inner,.exam-hero-inner,.creator-suite-heading,.creator-suite-switch,.exam-taking-header,.result-summary-card{flex-direction:column;align-items:flex-start}.exam-grid{grid-template-columns:1fr}.exam-facts{grid-template-columns:repeat(2,1fr)}.exam-instructions-card{padding:20px}.question-dot-grid{grid-template-columns:repeat(6,1fr)}.question-card{padding:20px}.question-heading{flex-direction:column;gap:5px}.question-card h2{font-size:21px}.question-actions{flex-wrap:wrap}.answer-review-grid{grid-template-columns:1fr}.sequence-comparison>div{grid-template-columns:24px 1fr}.sequence-comparison>div span:last-child{grid-column:2}.exam-creator-stats{grid-template-columns:repeat(2,1fr)}.access-row{grid-template-columns:1fr}.access-row label:last-child{grid-template-columns:1fr 90px}.exam-results-table th,.exam-results-table td{padding:10px}.result-score{text-align:left}.result-score strong{font-size:40px}.question-bank-tools{padding:16px!important}.question-bank-tools-grid{grid-template-columns:1fr;gap:12px}.question-bank-export-card{grid-column:auto}.question-bank-tool-card{padding:15px}.question-bank-tools-heading h2{font-size:21px}}.exam-subject-page>h1{letter-spacing:-.04em;margin:8px 0 12px;font-size:46px}.exam-subject-badges{flex-wrap:wrap;gap:8px;margin:18px 0 26px;display:flex}.exam-subject-badges span{color:#0f766e;background:#f0fdfa;border:1px solid #99d5cf;border-radius:999px;padding:7px 11px;font-size:12px;font-weight:800}.exam-subject-info-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}@media (width<=700px){.exam-subject-info-grid{grid-template-columns:1fr}.exam-subject-page>h1{font-size:38px}}.chapter-quiz-link-fields{background:#f0fdfa;border:1px solid #dbe7e5;border-radius:12px;gap:10px;padding:14px;display:grid}.chapter-quiz-row{background:#f8fffd;border-top:1px dashed #99d5cf}.chapter-quiz-row:hover{background:#ecfdf5}.quiz-badge{font-size:12px;font-weight:850;color:#fff!important;background:#0f766e!important}.chapter-quiz-row .lesson-copy strong{color:#0f5f59}.lesson-progress-panel{background:#f8fafc;border:1px solid #dbe4ea;border-radius:14px;margin:24px 0;padding:16px 18px}.lesson-progress-heading,.card-progress-label,.library-topic-progress{justify-content:space-between;align-items:center;gap:12px;display:flex}.lesson-progress-heading{color:#0f172a;margin-bottom:10px}.lesson-progress-heading span,.card-progress-label strong,.library-topic-progress strong{color:#0f766e}.lesson-progress-track{background:#e2e8f0;border-radius:999px;width:100%;height:8px;overflow:hidden}.lesson-progress-track>span{border-radius:inherit;background:#0f766e;height:100%;transition:width .18s;display:block}.lesson-progress-panel small{color:#64748b;margin-top:9px;display:block}.card-progress{margin-top:12px}.card-progress-label{color:#64748b;margin-bottom:6px;font-size:12px}.card-progress .lesson-progress-track{height:6px}.library-topic-progress{color:#64748b;max-width:260px;margin-top:8px;font-size:13px}@media (width<=650px){.lesson-progress-panel{padding:14px}}.idaare-player-shell{background:#fff;border:1px solid #e5e8ee;border-radius:16px;width:100%;margin-bottom:28px;overflow:hidden}.idaare-video-stage{cursor:pointer;background:#000;border:0;width:100%;padding:0;display:block;position:relative}.idaare-video-stage .player{aspect-ratio:auto;object-fit:contain;background:#000;border-radius:0;width:100%;height:auto;margin:0;display:block}.idaare-center-play{color:#111827;pointer-events:none;background:#ffffffe6;border-radius:50%;place-items:center;width:64px;height:64px;padding-left:4px;font-size:25px;display:grid;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);box-shadow:0 4px 18px #0f172a29}.idaare-player-controls{color:#162033;background:#fff;border-top:1px solid #e5e8ee;align-items:center;gap:10px;padding:10px 12px;display:flex}.idaare-control-button{color:#162033;cursor:pointer;background:0 0;border:0;border-radius:7px;min-width:34px;height:34px;padding:4px 6px;font-size:16px;font-weight:800}.idaare-control-button:hover{background:#f1f5f9}.idaare-player-time{font-variant-numeric:tabular-nums;white-space:nowrap;color:#475569;font-size:13px}.idaare-seek{accent-color:#0f766e;flex:1;min-width:90px}.idaare-volume{accent-color:#0f766e;width:82px}.idaare-player-shell:fullscreen{background:#000;border:0;border-radius:0;flex-direction:column;justify-content:center;display:flex}.idaare-player-shell:fullscreen .idaare-video-stage{flex:1;place-items:center;display:grid}.idaare-player-shell:fullscreen .idaare-video-stage .player{width:100%;height:auto;max-height:calc(100vh - 58px)}.idaare-player-shell:fullscreen .idaare-player-controls{flex:none}@media (width<=600px){.idaare-player-controls{gap:6px;padding:8px}.idaare-volume{display:none}.idaare-player-time{font-size:12px}.idaare-center-play{width:54px;height:54px;font-size:21px}}:-webkit-any(.idaare-player-shell:fullscreen,.idaare-player-shell:-webkit-full-screen){background:#000;border:0;border-radius:0;flex-direction:column;width:100vw;max-width:none;height:100vh;margin:0;padding:0;display:flex;overflow:hidden}:is(.idaare-player-shell:fullscreen,.idaare-player-shell:fullscreen){background:#000;border:0;border-radius:0;flex-direction:column;width:100vw;max-width:none;height:100vh;margin:0;padding:0;display:flex;overflow:hidden}:-webkit-any(.idaare-player-shell:fullscreen .idaare-video-stage,.idaare-player-shell:-webkit-full-screen .idaare-video-stage){background:#000;flex:auto;justify-content:center;align-items:center;width:100%;min-height:0;display:flex}:is(.idaare-player-shell:fullscreen .idaare-video-stage,.idaare-player-shell:fullscreen .idaare-video-stage){background:#000;flex:auto;justify-content:center;align-items:center;width:100%;min-height:0;display:flex}:-webkit-any(.idaare-player-shell:fullscreen .idaare-video-stage .player,.idaare-player-shell:-webkit-full-screen .idaare-video-stage .player){object-fit:contain;background:#000;width:100%;max-width:100vw;height:100%;max-height:calc(100vh - 54px)}:is(.idaare-player-shell:fullscreen .idaare-video-stage .player,.idaare-player-shell:fullscreen .idaare-video-stage .player){object-fit:contain;background:#000;width:100%;max-width:100vw;height:100%;max-height:calc(100vh - 54px)}:-webkit-any(.idaare-player-shell:fullscreen .idaare-player-controls,.idaare-player-shell:-webkit-full-screen .idaare-player-controls){box-sizing:border-box;border-top:0;flex:none;width:100%;min-height:54px}:is(.idaare-player-shell:fullscreen .idaare-player-controls,.idaare-player-shell:fullscreen .idaare-player-controls){box-sizing:border-box;border-top:0;flex:none;width:100%;min-height:54px}.idaare-video-stage{justify-content:center;align-items:center;min-height:180px;display:flex}.idaare-player-loading{z-index:3;color:#fff;pointer-events:none;background:#0f172ac7;border-radius:9px;padding:9px 13px;font-size:13px;font-weight:700;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.idaare-player-error{z-index:5;color:#fff;text-align:center;cursor:default;background:#000000c2;flex-direction:column;justify-content:center;align-items:center;gap:12px;padding:22px;display:flex;position:absolute;inset:0}.idaare-player-error span{max-width:520px;line-height:1.45}.idaare-player-error button{color:#0f172a;cursor:pointer;background:#fff;border:0;border-radius:9px;padding:9px 16px;font-weight:800}.idaare-player-error button:hover{background:#f1f5f9}