@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono&display=swap');
:root{--blue:#1747c4;--blue-d:#0f3596;--green:#0f7a52;--green-l:#e8f7f0;--ink:#0f1a33;--muted:#5a6478;--line:#d9e1ee;--tint:#eef4ff;--white:#fff;--err:#b42318;--r:16px}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,system-ui,sans-serif;color:var(--ink);background:var(--white);line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:var(--blue)}
h1,h2,h3{line-height:1.15;letter-spacing:-.02em;margin:0}
p{margin:0}
.wrap{padding:0 24px}@media(min-width:1024px){.wrap{padding:0 56px}}
.eyebrow{font-size:13px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--green)}
.muted{color:var(--muted)}
.btn{display:inline-block;border:0;cursor:pointer;border-radius:999px;padding:12px 26px;font:600 16px Inter,sans-serif;text-decoration:none;background:var(--blue);color:#fff}
.btn:hover{background:var(--blue-d)}.btn:disabled{opacity:.5;cursor:default}
.btn.green{background:var(--green)}.btn.white{background:#fff;color:var(--blue)}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.link{font-weight:600;text-decoration:none}.link:hover{text-decoration:underline}
/* header */
.hdr{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.hdr .bar{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.logo{display:flex;align-items:center;gap:8px;text-decoration:none;font-weight:800;font-size:19px;color:var(--blue)}
.logo i{width:12px;height:12px;border-radius:50%;background:var(--green)}.logo b{color:var(--green)}
.nav{display:flex;align-items:center;gap:22px;font-size:15px;font-weight:500}
.nav a{text-decoration:none;color:var(--muted)}.nav a.on{color:var(--blue)}
.nav .btn{padding:7px 18px;font-size:14px;color:#fff}
.session{display:flex;align-items:center;gap:12px}.session button{background:none;border:0;color:var(--muted);font:500 14px Inter;cursor:pointer}
.ph{display:inline-block;width:70px;height:32px;border-radius:999px;background:var(--tint)}
@media(max-width:760px){.nav .pg{display:none}.mnav{display:flex;gap:16px;overflow-x:auto;padding:0 24px 10px;font-size:14px}.mnav a{text-decoration:none;color:var(--muted);white-space:nowrap}}
@media(min-width:761px){.mnav{display:none}}
/* sections */
.hero{background:linear-gradient(135deg,var(--blue) 0%,var(--blue) 45%,var(--green) 100%);color:#fff;padding:96px 0}
.hero h1{font-size:clamp(38px,6vw,68px);font-weight:800;max-width:900px;margin-top:16px}
.hero p.lead{font-size:20px;max-width:680px;margin-top:24px;opacity:.93}
.hero .eyebrow{color:rgba(255,255,255,.85)}
.row{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:36px}
.sec{padding:80px 0}.sec.tint{background:var(--tint)}
.sec h2{font-size:clamp(28px,3.4vw,40px);font-weight:800;margin-top:10px}
.grid{display:grid;gap:22px;margin-top:36px}
@media(min-width:800px){.g2{grid-template-columns:1fr 1fr}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}.g53{grid-template-columns:3fr 2fr}}
.card{border:1px solid var(--line);border-radius:var(--r);padding:28px;background:#fff;text-decoration:none;color:inherit;display:block}
a.card:hover{border-color:var(--blue)}
.card .num{font-size:38px;font-weight:800;color:var(--green)}
.card h3{font-size:20px;font-weight:700;margin-top:10px}
.card p{margin-top:8px}
.panel{border-radius:var(--r);padding:32px;background:var(--green-l)}
.panel h3{color:var(--green);font-size:21px}
.grad{border-radius:var(--r);padding:40px;color:#fff;background:linear-gradient(135deg,var(--blue),var(--green))}
.stat b{display:block;font-size:34px;font-weight:800;color:var(--blue)}.stat b.g{color:var(--green)}
table.sched{width:100%;border-collapse:collapse;margin-top:20px}
.sched th{font-size:13px;color:var(--muted);text-align:left;border-bottom:2px solid var(--blue);padding:8px 12px 8px 0}
.sched td{border-bottom:1px solid var(--line);padding:12px 12px 12px 0;vertical-align:top}
.sched td.wk{font-weight:800;color:var(--blue)}
ul.dots{list-style:none;padding:0;margin:24px 0 0}ul.dots li{display:flex;gap:12px;margin-bottom:12px}ul.dots li:before{content:"";flex:none;width:8px;height:8px;border-radius:50%;background:var(--green);margin-top:9px}
.list{list-style:none;padding:0;margin:16px 0 0}.list li{display:flex;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
footer.ftr{background:var(--tint);border-top:1px solid var(--line);padding:36px 0;font-size:14px;color:var(--muted)}
footer.ftr .bar{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px}footer.ftr strong{color:var(--blue)}
/* forms */
.auth{max-width:440px;margin:56px auto}
.auth form{display:flex;flex-direction:column;gap:14px;margin-top:24px}
.auth label{font-size:14px;font-weight:600}
.auth input{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font:16px Inter;margin-top:6px}
.auth input:focus{outline:2px solid var(--blue);border-color:transparent}
.err{color:var(--err);font-size:14px;min-height:1px}
.tabs{display:flex;gap:8px;margin-top:24px}.tabs button{flex:1;padding:10px;border:1px solid var(--line);background:#fff;border-radius:999px;font:600 14px Inter;cursor:pointer;color:var(--muted)}.tabs button.on{background:var(--blue);color:#fff;border-color:var(--blue)}
[hidden]{display:none!important}
/* portal */
.portal{padding-top:40px;padding-bottom:96px}
.wk-card{border:1px solid var(--line);border-radius:var(--r);padding:22px;text-decoration:none;color:inherit;display:block}
.wk-card:hover{border-color:var(--blue)}.wk-card.now{border-color:var(--green);background:var(--green-l)}
.wk-card small{color:var(--muted);font-weight:600}.wk-card b{display:block;font-size:18px;margin-top:6px}.wk-card em{display:block;font-style:normal;color:var(--green);font-weight:700;font-size:14px;margin-top:8px}
.week{display:grid;gap:36px;margin-top:28px}@media(min-width:1200px){.week{grid-template-columns:2fr 1fr}}
.hw{list-style:none;padding:0;margin:16px 0 0}.hw li{display:flex;gap:12px;margin-bottom:12px}.hw li:before{content:"";flex:none;width:15px;height:15px;border:2px solid var(--green);border-radius:4px;margin-top:4px}
.ctrls{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-top:16px}
.ctrls .btn{padding:9px 18px;font-size:14px}
.pager{display:flex;justify-content:space-between;border-top:1px solid var(--line);margin-top:48px;padding-top:22px;font-weight:600}
/* slides */
.slide-frame{position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;border-radius:var(--r);border:1px solid var(--line);background:#fff}
.slide-frame:fullscreen{border:0;border-radius:0;background:#fff;display:flex;align-items:center}
.slide-canvas{position:absolute;top:0;left:0;width:1920px;height:1080px;transform-origin:top left}
.slide-canvas section{width:1920px;height:1080px;position:relative;overflow:hidden;box-sizing:border-box}
.slide-canvas h1,.slide-canvas h2,.slide-canvas h3,.slide-canvas p{margin:0;letter-spacing:normal}
.slide-canvas table{border-collapse:collapse;width:100%}.slide-canvas th,.slide-canvas td{border:1px solid #d1d5db;text-align:left}
/* Featured course */
.badge{display:inline-block;background:var(--green);color:#fff;font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:7px 14px;border-radius:999px}
.feature-wrap{margin-top:-56px;position:relative;z-index:2}
.feature{display:grid;gap:32px;background:#fff;border:2px solid var(--blue);border-radius:var(--r);padding:36px;box-shadow:0 24px 60px rgba(23,71,196,.18)}
@media(min-width:900px){.feature{grid-template-columns:1.6fr 1fr;padding:44px;align-items:center}}
.feature-code{margin-top:18px;font-size:14px;font-weight:700;color:var(--blue);letter-spacing:.12em;text-transform:uppercase}
.feature h2{font-size:clamp(26px,3.2vw,38px);font-weight:800;margin-top:6px;line-height:1.15}
.feature-lead{font-size:18px;color:#3b4252;margin-top:14px;max-width:640px}
.feature-facts{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.feature-facts div{background:var(--tint);border-radius:14px;padding:18px}
.feature-facts b{display:block;font-size:24px;font-weight:800;color:var(--blue)}
.feature-facts b.g{color:var(--green)}
.feature-facts span{font-size:14px;color:#5b6475}
.hero{padding-bottom:132px}
/* My Courses back office */
.course-card{display:flex;flex-direction:column}
.course-card .cc-top{display:flex;justify-content:space-between;align-items:center;gap:12px}
.course-card .cc-code{font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--blue)}
.course-card h3{font-size:22px;line-height:1.25}
.course-card .row{margin-top:auto;padding-top:22px}
.course-card.locked{background:#f7f8fb}
.course-card .lock{font-size:13px;font-weight:700;color:var(--muted);background:#eceff5;padding:6px 12px;border-radius:999px}
/* Course documents + lesson locks */
.wk-card.locked{opacity:.6;cursor:default;background:#f4f6fa}
.wk-card .lk{font-style:normal;color:var(--muted)}
.doc-wrap{display:grid;gap:28px;margin-top:28px}
@media(min-width:900px){.doc-wrap{grid-template-columns:220px 1fr;align-items:start}}
.doc-tabs{display:flex;flex-wrap:wrap;gap:6px}
@media(min-width:900px){.doc-tabs{flex-direction:column;position:sticky;top:90px}}
.doc-tabs a,.doc-tabs span{display:block;padding:8px 12px;border-radius:10px;font-size:14px;font-weight:600;text-decoration:none;color:var(--ink)}
.doc-tabs a:hover{background:var(--tint)}.doc-tabs a.on{background:var(--blue);color:#fff}
.doc-tabs .locked{color:var(--muted);cursor:default}
.doc-body{grid-column:1/-1;max-width:860px;font-size:17px;line-height:1.65}
.doc-tabs+.doc-body{grid-column:auto}
.doc-body h1{font-size:30px;font-weight:800;margin:0 0 12px}
.doc-body h2{font-size:24px;font-weight:800;margin:36px 0 10px;color:var(--blue)}
.doc-body h3{font-size:19px;font-weight:700;margin:26px 0 8px}
.doc-body p{margin:12px 0}.doc-body ul,.doc-body ol{margin:12px 0;padding-left:24px}.doc-body li{margin:6px 0}
.doc-body li.task{list-style:none;margin-left:-22px}.doc-body li.task input{margin-right:8px;transform:scale(1.15)}
.doc-body blockquote{margin:16px 0;padding:14px 18px;background:var(--tint);border-left:4px solid var(--blue);border-radius:8px}
.doc-body .tbl{overflow-x:auto;margin:16px 0}
.doc-body table{border-collapse:collapse;width:100%;font-size:15px}
.doc-body th{background:var(--blue);color:#fff;text-align:left;padding:10px;font-weight:700}
.doc-body td{border-bottom:1px solid var(--line);padding:10px;vertical-align:top}
.doc-body a{color:var(--blue)}.doc-body code{background:var(--tint);padding:2px 6px;border-radius:6px;font-size:.92em}
/* Coming soon course */
.badge.soon{background:#0b0b0f;color:#fff}
.soon-card{border:2px dashed #1747c4;background:#fff}