:root{--blue:#0076b8;--blue-dark:#005f99;--green:#70bd44;--ink:#0f172a;--muted:#64748b;--line:#e6ebf1;--pale:#f7f9fc;--font:'Google Sans',Arial,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:96px}body{margin:0;color:var(--ink);background:#fff;font-family:var(--font);font-size:15px;line-height:1.65}button,input,select,textarea{font:inherit}button,a,input,select,summary{ -webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}a{color:inherit;text-decoration:none}button{color:inherit}img{max-width:100%;display:block}svg.icon{height:20px;width:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.22;letter-spacing:-.035em}h2{font-size:32px;font-weight:700}h3{font-size:20px}p{color:var(--muted)}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #ef8a3d;outline-offset:5px}input:focus,select:focus,textarea:focus{outline:2px solid #0076b855;border-color:var(--blue)}.container{width:min(1240px,calc(100% - 64px));margin:auto}.skip-link{position:fixed;top:-80px;left:20px;z-index:1000;background:#fff;padding:12px}.skip-link:focus{top:8px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:11px;border:1px solid transparent;border-radius:999px;padding:14px 23px;font-weight:700;font-size:14px;line-height:1.3;min-height:48px;transition:transform .2s,background .2s,box-shadow .2s}.btn:hover{transform:translateY(-2px)}.btn.primary{background:var(--blue);color:#fff;box-shadow:0 5px 20px #0076b827}.btn.primary:hover{background:var(--blue-dark);box-shadow:0 8px 26px #0076b83b}.btn.light{background:#ffffff12;color:white;border-color:#ffffff10}.btn.outline{background:#fff;border-color:var(--line);color:var(--ink)}.btn.small{padding:10px 16px;min-height:41px}.btn .round-arrow{width:28px;height:28px;display:grid;place-items:center;border-radius:50%;background:#ffffff25}.btn .round-arrow svg{width:16px;height:16px}.actions{display:flex;gap:14px;flex-wrap:wrap;align-items:center}.eyebrow{display:block;font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);margin-bottom:14px}.section{padding:78px 0}.section-soft{background:var(--pale)}.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:30px}.section-head h2{margin-bottom:10px}.section-head p{font-size:15px;max-width:650px}.text-link{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;color:var(--blue);white-space:nowrap}.text-link:hover{color:var(--blue-dark)}.text-link svg{width:16px;height:16px}.center{text-align:center}.center p{max-width:650px;margin:16px auto 0}.pill{display:inline-flex;align-items:center;gap:6px;border-radius:99px;background:#eaf4fb;color:var(--blue);padding:5px 10px;font-size:11px;line-height:1.5;font-weight:700}.muted{color:var(--muted)}
/* Header */
#header{position:sticky;top:0;z-index:50;height:80px;background:#ffffffee;border-bottom:1px solid #e9eef4;backdrop-filter:blur(15px)}.nav-wrap{display:flex;align-items:center;gap:28px;height:100%}.brand{display:inline-flex;align-items:center;gap:5px;white-space:nowrap;line-height:1;letter-spacing:-.075em;font-weight:700;font-size:39px;color:var(--blue)}.brand .ai{color:var(--green);position:relative;letter-spacing:-.09em}.brand .ai:after{content:'';position:absolute;right:0;bottom:-7px;width:90%;height:3px;background:#f08a32;border-radius:9px;transform:rotate(-7deg)}.brand small{font-size:8px;letter-spacing:.18em;color:var(--muted);display:block}.nav-links{display:flex;gap:26px;font-weight:600;font-size:13px;align-items:center}.nav-links a:hover,.nav-links a.active{color:var(--blue)}.nav-search{margin-left:auto;display:flex;align-items:center;gap:9px;flex:1;max-width:310px;padding:10px 12px;border-radius:10px;background:#f4f6f9;color:#8792a2}.nav-search input{min-width:0;width:100%;border:0;outline:0;background:none;font-size:12px}.nav-search kbd{font:11px var(--font);white-space:nowrap;color:#94a3b8}.nav-actions{display:flex;align-items:center;gap:18px}.activate-btn{border:0;background:none;font-weight:700;font-size:12px;display:flex;gap:6px;align-items:center;color:var(--blue);padding:8px 0;white-space:nowrap}.nav-actions .btn{font-size:12px;padding:9px 12px;min-height:39px}.menu-toggle{display:none;background:none;border:0;padding:8px}.mobile-nav{display:none;background:white;box-shadow:0 10px 30px #0f172a12;padding:20px 24px;border-top:1px solid var(--line)}.mobile-nav.open{display:grid;gap:17px}.mobile-nav form{max-width:none;margin:0}.mobile-nav a{font-weight:600}
/* Hero */
.hero{position:relative;isolation:isolate;overflow:hidden;background:radial-gradient(ellipse at 12% 10%,#083d5b 0,transparent 48%),radial-gradient(ellipse at 89% 38%,#172e52 0,transparent 40%),radial-gradient(ellipse at 52% 92%,#211833 0,transparent 44%),#0b101d;color:white;padding:104px 0 72px}.hero:before{content:'';position:absolute;inset:0;z-index:-1;opacity:.11;background-image:linear-gradient(#578dbb30 1px,transparent 1px),linear-gradient(90deg,#578dbb30 1px,transparent 1px);background-size:54px 54px;mask-image:linear-gradient(#000,transparent)}.hero-grid{display:grid;grid-template-columns:1.17fr 1fr;gap:80px;align-items:center}.hero-label{display:inline-flex;gap:7px;align-items:center;border:1px solid #ffffff13;background:#ffffff09;color:#d7eaf5;border-radius:99px;padding:6px 12px;font-size:11px;font-weight:600;margin-bottom:36px}.hero-label svg{width:14px;height:14px}.hero h1{font-size:62px;line-height:1.08;letter-spacing:-.05em;max-width:690px}.gradient-text{position:relative;display:inline;background:linear-gradient(100deg,#0085cf 2%,#15a8cc 49%,#76bb47 100%);background-clip:text;-webkit-text-fill-color:transparent}.hero h1 .gradient-text:after{content:'';position:absolute;height:3px;bottom:-6px;left:0;width:100%;background:#f08335;border-radius:50%;transform:rotate(-2deg)}.hero p{font-size:17px;line-height:1.8;color:#b8c5d5;margin:27px 0 30px;max-width:610px}.hero .btn{padding:14px 24px}.hero-stats{display:flex;gap:48px;margin-top:45px}.stat strong{font-size:31px;font-weight:700;line-height:1.25;display:block}.stat span{font-size:11px;color:#a9b8c9;display:block;margin-top:6px}.hero-visual{position:relative;padding:15px 32px 20px 26px}.feature-card{display:block;background:white;color:var(--ink);border-radius:20px;overflow:hidden;border:3px solid #ffffff80;box-shadow:0 0 0 5px #ffffff08,0 22px 70px #0004;transform:rotate(2deg);transition:transform .3s}.feature-card:hover{transform:rotate(0deg) translateY(-5px)}.hero .course-cover{height:246px;border-radius:0}.hero .cover-word{font-size:33px;max-width:225px}.hero .cover-small{font-size:9px}.feature-info{padding:21px 24px 24px}.feature-info .eyebrow{font-size:10px;margin-bottom:8px}.feature-info h3{font-size:21px;letter-spacing:-.02em;line-height:1.4}.feature-price{color:var(--blue);font-size:29px;font-weight:700;margin-top:15px}.feature-meta{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:6px;margin-top:6px}.feature-meta .icon{height:14px;width:14px;color:#de9a22}.float-badge{display:flex;gap:12px;align-items:center;position:absolute;background:white;box-shadow:0 15px 50px #0002;border-radius:20px;padding:15px 18px;top:-14px;left:-3px;z-index:2;color:var(--ink)}.float-badge .symbol{border-radius:50%;background:#e4f4fc;color:var(--blue);padding:10px;display:flex}.float-badge small{font-size:9px;letter-spacing:.08em;text-transform:uppercase;color:#68758b;display:block}.float-badge strong{font-size:16px;line-height:1.2;display:block}.float-badge.bottom{background:#0d1725;color:white;top:auto;left:auto;right:-8px;bottom:0}.float-badge.bottom .symbol{color:#1cc5a0;background:#0d3937}.float-badge.bottom small{color:#96b1c6}
/* Benefits, categories, course cards */
.benefits{display:grid;grid-template-columns:1.22fr 1fr .8fr;grid-template-rows:auto auto;gap:18px;margin-top:34px}.benefit{border:1px solid var(--line);border-radius:22px;padding:28px;background:white;overflow:hidden}.benefit.large{grid-row:span 2;background:#edf7fd;border-color:#e2f0f8;padding:34px}.benefit.large h3{font-size:28px;margin:30px 0 15px}.benefit p{font-size:14px;line-height:1.8}.icon-box{display:inline-flex;align-items:center;justify-content:center;width:45px;height:45px;background:#fff;border-radius:13px;color:var(--blue);box-shadow:0 6px 15px #0b80bf0b}.benefit.wide{grid-column:span 2;display:flex;gap:25px;align-items:center;padding:29px}.benefit.wide h3{margin-bottom:9px}.devices{min-width:135px;height:94px;position:relative;background:linear-gradient(130deg,#e2f1ff,#f7fbff);border-radius:14px;display:grid;place-items:center;color:#168bc6}.devices svg{width:60px;height:60px}.benefit.mini{display:flex;flex-direction:column;gap:8px;padding:24px}.benefit.mini strong{font-size:27px;letter-spacing:-.04em}.benefit.mini .icon{color:var(--blue);margin-bottom:5px}.benefit.mini.green{background:#f0faf4;border-color:#e0f2e6}.benefit.mini.green .icon{color:#299663}.category-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;margin-top:32px}.category{border:1px solid var(--line);padding:26px 14px;border-radius:18px;text-align:center;background:#fff;transition:all .2s}.category:hover{transform:translateY(-5px);border-color:#8fc7e6;box-shadow:0 10px 25px #0076b811}.category .icon-box{background:#edf6ff;margin:0 auto 16px}.category:nth-child(2n) .icon-box{background:#f4f0ff;color:#8761c9}.category:nth-child(3n) .icon-box{background:#eaf8ef;color:#289e66}.category h3{font-size:13px;font-weight:600;line-height:1.5;letter-spacing:0}.category small{display:block;font-size:10px;color:#8b98a9;margin-top:7px}.section-end{text-align:center;margin-top:28px}.course-section{padding:58px 0}.course-section h2{font-size:27px}.course-section .section-head{margin-bottom:24px}.course-section .eyebrow{margin-bottom:10px}.row-controls{display:flex;align-items:center;gap:10px}.round-btn{border:1px solid var(--line);border-radius:50%;background:white;width:34px;height:34px;display:grid;place-items:center}.round-btn:hover{border-color:#80bedf;color:var(--blue)}.round-btn .icon{height:16px;width:16px}.course-row{display:grid;grid-auto-flow:column;grid-auto-columns:calc((100% - 66px)/4);gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;padding:5px 2px 15px}.course-row::-webkit-scrollbar{display:none}.course-card{border:1px solid var(--line);border-radius:16px;background:white;overflow:hidden;scroll-snap-align:start;transition:box-shadow .2s,transform .2s;display:flex;flex-direction:column}.course-card:hover{transform:translateY(-4px);box-shadow:0 14px 30px #152f5412}.course-cover{height:166px;position:relative;overflow:hidden;background:linear-gradient(115deg,#073854,#0d86bd);color:white;isolation:isolate}.course-cover:after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,#082e50f5 0%,#084575eb 45%,#08457535 100%);z-index:-1}.course-cover img{position:absolute;right:0;top:0;width:58%;height:100%;object-fit:cover;object-position:center;z-index:-2}.course-cover.purple{background:#45267b}.course-cover.purple:after{background:linear-gradient(100deg,#27154ded,#493688d9 55%,#49368820)}.course-cover.teal:after{background:linear-gradient(105deg,#06443ff5,#0a7361db 55%,#0a736122)}.course-cover.orange:after{background:linear-gradient(105deg,#6b300ff5,#aa641fdb 55%,#aa641f22)}.course-cover.dark:after{background:linear-gradient(105deg,#11192ef5,#22304cdb 55%,#22304c22)}.cover-content{position:relative;padding:17px 18px;height:100%;display:flex;flex-direction:column;justify-content:center}.cover-small{font-size:7px;letter-spacing:.2em;font-weight:700;opacity:.8;margin-bottom:12px}.cover-word{font-size:21px;font-weight:700;line-height:1.14;letter-spacing:-.025em;max-width:180px;text-wrap:balance;text-shadow:0 2px 10px #0002}.cover-author{font-size:8px;letter-spacing:.11em;margin-top:13px;opacity:.85}.course-content{padding:17px 18px 19px;display:flex;flex-direction:column;flex:1}.tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}.tag{font-size:9px;line-height:1.5;padding:3px 7px;border-radius:5px;background:#f1f5f9;color:#64748b;font-weight:600}.tag.accent{color:#aa7413;background:#fff5db}.tag.free{color:#1c8756;background:#e8f9ef}.course-content h3{font-size:16px;line-height:1.4;letter-spacing:-.015em;min-height:45px}.teacher{display:flex;align-items:center;gap:6px;color:#7b8798;font-size:10px;margin-top:11px;text-transform:uppercase;letter-spacing:.025em}.teacher .icon{width:13px;height:13px}.course-format{display:flex;align-items:center;gap:5px;font-size:10px;color:#778598;margin:13px 0 9px}.course-format svg{width:13px;height:13px}.course-bottom{border-top:1px solid #edf0f5;display:flex;align-items:center;justify-content:space-between;padding-top:12px;margin-top:auto;color:var(--blue)}.price{font-size:20px;font-weight:700;letter-spacing:-.03em}.course-bottom>.icon{height:16px;width:16px}.learning-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:42px;margin:44px 0 34px;text-align:center}.step{position:relative;padding:0 18px}.step:not(:last-child):after{content:'';width:calc(100% - 40px);height:1px;border-top:1px dashed #cddfea;position:absolute;top:28px;left:calc(50% + 45px)}.step-num{display:grid;place-items:center;width:58px;height:58px;border-radius:50%;margin:0 auto 22px;background:#e6f3fb;color:var(--blue);font-size:22px;font-weight:700}.step h3{font-size:19px;margin-bottom:12px}.step p{font-size:13px}.teacher-grid{display:grid;grid-template-columns:1fr 1.2fr;align-items:center;gap:90px;max-width:1020px;margin:auto}.teacher-photo{position:relative;padding:0 45px}.teacher-photo img{border-radius:24px;max-height:420px;width:100%;object-fit:cover;object-position:50% 30%;background:#dfeaf4}.teacher-label{position:absolute;bottom:24px;left:10px;padding:18px 26px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 10px 30px #0f172a10}.teacher-label strong{display:block;font-size:18px;letter-spacing:-.02em}.teacher-label span{font-size:11px;color:var(--blue)}.teacher-bio h2{font-size:37px;margin-bottom:20px}.teacher-bio p{margin-bottom:17px;font-size:15px}.teacher-points{display:grid;gap:12px;margin:23px 0}.teacher-points span{display:flex;align-items:center;gap:10px;font-size:13px}.teacher-points .icon{color:var(--blue);width:17px;height:17px}
/* FAQs and footer */
.faq-layout{display:grid;grid-template-columns:.8fr 1.3fr;gap:80px;align-items:start}.faq-intro{position:sticky;top:115px}.faq-intro p{margin:20px 0}.search-field{display:flex;gap:9px;align-items:center;border:1px solid var(--line);border-radius:12px;padding:12px 15px;background:#fff;color:#8895a5}.search-field input{border:0;outline:0;background:transparent;min-width:0;width:100%;font-size:13px}.faq-tabs{display:flex;flex-wrap:wrap;gap:7px;margin:18px 0 25px}.chip{padding:7px 13px;border:1px solid var(--line);background:white;border-radius:99px;font-size:11px;color:#607087}.chip.active{background:var(--blue);color:white;border-color:var(--blue)}.faq-item{border-bottom:1px solid var(--line);padding:0}.faq-item summary{list-style:none;cursor:pointer;display:flex;gap:20px;align-items:center;padding:22px 0}.faq-item summary::-webkit-details-marker{display:none}.faq-num{color:#9ca9ba;font-size:14px}.faq-question{flex:1;font-size:14px;font-weight:600}.faq-question small{display:block;font-size:9px;font-weight:700;letter-spacing:.12em;color:var(--blue);margin-bottom:6px;text-transform:uppercase}.faq-plus{color:var(--blue);font-size:23px;font-weight:400}.faq-item[open] .faq-plus{transform:rotate(45deg)}.faq-item p{padding:0 30px 24px 38px;font-size:13px;line-height:1.85}.faq-after{font-size:12px;margin-top:23px}.faq-after a{color:var(--blue);font-weight:600}.cta{position:relative;overflow:hidden;text-align:center;border-radius:30px;padding:67px 35px;background:radial-gradient(ellipse at 15% 0,#16476b,transparent 60%),#0c182c;color:white}.cta h2{font-size:44px}.cta p{color:#afc1d6;margin:18px auto 27px;max-width:560px}.cta .actions{justify-content:center}.cta-points{display:flex;gap:25px;justify-content:center;flex-wrap:wrap;font-size:11px;color:#a1b4c9;margin-top:30px}.cta-points span{display:flex;gap:7px;align-items:center}.cta-points .icon{height:14px;width:14px;color:#6bbb7d}#footer{padding:62px 0 23px;background:#f8fafc;border-top:1px solid var(--line)}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:55px}.footer-brand p{font-size:13px;max-width:325px;margin:23px 0 16px;line-height:1.8}.footer-brand .contact-line{display:flex;gap:8px;font-size:12px;color:#64748b;align-items:center;margin-top:9px}.footer-brand .icon{height:14px;width:14px}.footer-col h3{font-size:14px;letter-spacing:0;margin:7px 0 22px}.footer-col a{display:block;font-size:12px;color:#748196;margin:13px 0}.footer-col a:hover{color:var(--blue)}.footer-bottom{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding-top:23px;margin-top:43px;font-size:11px;color:#91a0b1}.footer-bottom div{display:flex;gap:22px}
/* Inner pages */
.page-banner{background:linear-gradient(115deg,#eff8fd,#f7f9fc);padding:45px 0 42px;border-bottom:1px solid #e6edf4}.breadcrumb{display:flex;gap:10px;align-items:center;font-size:11px;color:#7c8ca2;margin-bottom:22px;flex-wrap:wrap}.breadcrumb a:hover{color:var(--blue)}.page-banner h1{font-size:39px;margin-bottom:13px}.page-banner p{max-width:690px}.catalog-layout{display:grid;grid-template-columns:228px 1fr;gap:32px;align-items:start;padding-top:40px;padding-bottom:72px}.filters{border:1px solid var(--line);border-radius:16px;padding:22px;position:sticky;top:106px}.filter-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}.filter-title h2{font-size:17px}.plain-btn{border:0;background:transparent;color:var(--blue);font-size:11px;padding:5px}.filter-group{border-top:1px solid var(--line);padding-top:18px;margin-top:18px}.filter-group h3{font-size:12px;letter-spacing:0;margin-bottom:12px}.check-label{display:flex;gap:8px;align-items:center;font-size:12px;color:#64748b;margin:12px 0;cursor:pointer}.check-label input{accent-color:var(--blue);width:15px;height:15px;margin:0}.catalog-toolbar{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:22px}.catalog-toolbar p{font-size:12px}.sort-select{border:1px solid var(--line);border-radius:9px;padding:9px 30px 9px 12px;font-size:12px;background:white;color:#526275;max-width:100%}.catalog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.catalog-search{margin-bottom:25px}.catalog-grid .course-cover{height:158px}.catalog-grid .cover-word{font-size:20px;max-width:165px}.empty-state{grid-column:1/-1;padding:65px 20px;text-align:center;border:1px dashed #d9e3ee;border-radius:16px;background:var(--pale)}.empty-state .icon{width:38px;height:38px;color:#9cabbc;margin-bottom:18px}.empty-state h3{font-size:21px;margin-bottom:10px}.empty-state p{font-size:13px;margin-bottom:22px}.detail-hero{background:radial-gradient(at 0 0,#083f61,transparent 65%),#0c182c;color:white;padding:40px 0 60px}.detail-hero .breadcrumb{color:#9fb3c9}.detail-hero .pill{background:#ffffff14;color:#a9daff;margin-bottom:19px}.detail-main-copy{max-width:735px}.detail-hero h1{font-size:43px;line-height:1.18;margin-bottom:20px}.detail-hero p{font-size:15px;color:#bbccdc;max-width:680px;line-height:1.8}.detail-info{display:flex;gap:24px;align-items:center;flex-wrap:wrap;margin-top:26px;font-size:12px;color:#b7cadb}.detail-info span{display:flex;gap:7px;align-items:center}.detail-info svg{width:16px;height:16px}.detail-layout{display:grid;grid-template-columns:1fr 360px;gap:50px;align-items:start}.detail-body{padding:35px 0 70px;min-width:0}.detail-tabs{display:flex;gap:30px;border-bottom:1px solid var(--line);margin-bottom:36px;position:sticky;top:80px;background:#fff;z-index:3}.detail-tabs a{font-size:13px;font-weight:600;padding:16px 0}.detail-tabs a:first-child{color:var(--blue);border-bottom:2px solid var(--blue)}.detail-block{margin:38px 0;scroll-margin-top:150px}.detail-block h2{font-size:25px;margin-bottom:22px}.goals{display:grid;grid-template-columns:1fr 1fr;gap:18px;border:1px solid #deede5;background:#f5fbf7;border-radius:16px;padding:25px}.goals div{display:flex;align-items:start;gap:10px;font-size:13px}.goals .icon{color:#319b69;width:17px;height:17px;margin-top:3px}.detail-block p{font-size:14px;line-height:1.9;margin:15px 0}.topic{border:1px solid var(--line);border-radius:12px;padding:19px 20px;display:flex;align-items:center;gap:14px;margin-bottom:10px;font-size:13px}.topic span{display:grid;place-items:center;background:#edf6fc;border-radius:8px;min-width:30px;height:30px;color:var(--blue);font-weight:700;font-size:11px}.topic 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