:root {
  --blue: #118ee8;
  --blue-dark: #0877c7;
  --blue-soft: #dff0ff;
  --green: #20a416;
  --yellow: #ffb400;
  --text: #222329;
  --muted: #6d7480;
  --soft: #f1f4fa;
  --soft-2: #eef3fb;
  --line: #e4e8ef;
  --white: #ffffff;
  --dark: #050505;
  --radius: 7px;
  --container: 1180px;
  --shadow: 0 8px 24px rgba(24, 38, 55, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Nunito Sans", "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background: var(--white);
  font-size: 16px;
  line-height: 1.58;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }
.skip-link { position: absolute; left: 12px; top: -44px; z-index: 50; background: var(--blue); color: #fff; padding: 10px 14px; border-radius: 6px; }
.skip-link:focus { top: 12px; }
.container { width: min(var(--container), calc(100% - 44px)); margin-inline: auto; }
.topbar { min-height: 30px; display: flex; justify-content: center; align-items: center; gap: 6px; flex-wrap: wrap; padding: 6px 14px; background: #dfeefb; color: #334050; font-size: 13px; text-align: center; }
.topbar a { font-weight: 800; color: #334050; text-decoration: underline; text-underline-offset: 2px; }
.header { border-bottom: 1px solid var(--line); background: #fff; }
.header-main { min-height: 162px; display: grid; grid-template-columns: minmax(220px, 360px) 1fr 220px; align-items: center; gap: 26px; }
.logo { display: flex; align-items: center; justify-content: flex-start; gap: 8px; width: var(--logo-width, 220px); min-height: var(--logo-height, 120px); color: #070707; }
.logo.logo-image { align-items: center; }
.logo svg { width: 132px; height: 95px; }
.logo img { max-width: 100%; max-height: var(--logo-height, 120px); width: auto; height: auto; display: block; object-fit: contain; object-position: left center; }
.logo span { position: absolute; width: 1px; height: 1px; overflow: hidden; }
.nav { justify-self: center; display: flex; align-items: center; gap: 34px; font-size: 16px; font-weight: 800; color: #222631; }
.nav a { transition: color .2s ease; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--blue); }
.actions { justify-self: end; display: flex; align-items: center; gap: 20px; }
.icon-btn { width: 38px; height: 38px; border: 0; background: transparent; display: grid; place-items: center; color: #14171d; cursor: pointer; position: relative; font-size: 24px; }
.icon-btn svg { width: 20px; height: 20px; display: block; }
.search-link:hover { color: var(--blue); transform: translateY(-1px); }
.login-btn, .primary-btn, .outline-btn { display: inline-flex; align-items: center; justify-content: center; border-radius: 5px; border: 1px solid transparent; font-weight: 800; cursor: pointer; transition: .22s ease; white-space: nowrap; }
.login-btn { height: 42px; padding: 0 22px; background: var(--blue); color: #fff; font-size: 13px; }
.primary-btn { min-height: 44px; padding: 0 24px; background: var(--blue); color: #fff; box-shadow: 0 8px 18px rgba(17,142,232,.18); }
.primary-btn:hover, .login-btn:hover { background: var(--blue-dark); transform: translateY(-1px); }
.outline-btn { min-height: 44px; padding: 0 25px; border-color: #20242a; background: #fff; color: #20242a; }
.outline-btn:hover { background: #20242a; color: #fff; }
.menu-toggle { display: none; border: 1px solid var(--line); background: #fff; border-radius: 5px; height: 40px; padding: 0 14px; font-weight: 800; }
.hero { padding: 48px 0 66px; background: #fff; border-bottom: 1px solid #f0f1f4; }
.hero-grid { display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 44px; }
.kicker { margin: 0 0 14px; font-weight: 800; color: #5d6672; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 22px; font-size: clamp(35px, 4.7vw, 58px); line-height: 1.18; letter-spacing: -.035em; font-weight: 900; }
h2 { margin-bottom: 14px; font-size: clamp(28px, 3.1vw, 43px); line-height: 1.2; letter-spacing: -.03em; font-weight: 900; }
h3 { font-weight: 900; line-height: 1.25; }
.blue { color: var(--blue); }
.green { color: var(--green); }
.hero .primary-btn { width: 116px; height: 45px; font-size: 13px; padding: 0; }
.hero-art { position: relative; min-height: 350px; }
.person-card { position: absolute; right: 55px; top: 10px; width: 352px; height: 283px; background: linear-gradient(135deg, #fde3e9, #fff 42%, #d6ecff); border-radius: 4px; overflow: hidden; }
.person-card::before { content: ""; position: absolute; left: 80px; top: 22px; width: 170px; height: 170px; background: #f6c4cf; border-radius: 50%; }
.person-card::after { content: ""; position: absolute; left: 62px; bottom: -34px; width: 235px; height: 210px; background: linear-gradient(#f7a8b5 0 28%, #fff 28% 100%); border-radius: 46% 46% 0 0; box-shadow: inset 0 0 0 42px rgba(255,255,255,.34); }
.laptop { position: absolute; right: 250px; top: 123px; width: 230px; height: 134px; background: #2e3038; border-radius: 5px; box-shadow: 0 24px 45px rgba(35,47,61,.15); }
.laptop::after { content: ""; position: absolute; left: -12px; right: -18px; bottom: -14px; height: 14px; background: #c7cbd1; border-radius: 0 0 10px 10px; }
.shape-blue { position: absolute; left: 132px; top: 48px; width: 132px; height: 130px; border-radius: 6px; background: #e7f4ff; }
.dots { position: absolute; left: 125px; bottom: 10px; width: 180px; height: 94px; opacity: .7; background-image: radial-gradient(#ffb561 2px, transparent 2px); background-size: 18px 18px; }
.rating-badge { position: absolute; left: 100px; bottom: 67px; min-width: 238px; height: 66px; padding: 12px 20px; display: flex; align-items: center; gap: 13px; background: #fff; border-radius: 6px; box-shadow: 0 16px 30px rgba(31,43,58,.14); }
.rating-score { background: #ffbf22; color: #fff; border-radius: 16px; min-width: 58px; height: 27px; display: grid; place-items: center; font-weight: 900; }
.rating-badge strong { font-size: 12px; display: block; }
.rating-badge span { font-size: 12px; color: var(--muted); }
.features-band { background: var(--soft); padding: 28px 0; }
.feature-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.mini-feature { display: grid; grid-template-columns: 52px 1fr; align-items: center; gap: 15px; padding-right: 26px; border-right: 1px solid #dce1ea; }
.mini-feature:last-child { border-right: 0; }
.mini-icon { width: 48px; height: 48px; border-radius: 50%; background: #fff; color: var(--blue); display: grid; place-items: center; }
.mini-feature h3 { margin: 0 0 2px; font-size: 17px; }
.mini-feature p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.45; }
.partners { padding: 64px 0 34px; }
.partner-row { display: grid; grid-template-columns: 120px 1fr; gap: 46px; align-items: center; }
.partner-title { font-size: 20px; line-height: 1.18; font-weight: 900; }
.logos { display: flex; justify-content: space-between; align-items: center; gap: 34px; color: #7b7d81; font-size: clamp(22px, 2.4vw, 35px); font-weight: 900; filter: grayscale(1); opacity: .85; }
.partner-note { margin: 28px 0 0; text-align: center; font-weight: 800; font-size: 15px; }
.partner-note span { display: inline-block; margin-right: 10px; padding: 4px 13px; border-radius: 15px; background: var(--blue); color: #fff; font-size: 12px; }
.section { padding: 68px 0; }
.section-title { text-align: center; margin-bottom: 36px; }
.section-title .eyebrow { margin-bottom: 8px; color: #565d66; text-transform: uppercase; font-weight: 900; font-size: 13px; letter-spacing: .05em; }
.featured-course-summary { margin: 10px 0 0; color: var(--muted); font-weight: 800; }
.featured-courses-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.featured-courses-actions { margin-top: 42px; display: flex; justify-content: center; }
.course-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.course-card { border: 1px solid var(--line); border-radius: 6px; overflow: hidden; background: #fff; transition: .24s ease; }
.course-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.course-thumb { background: linear-gradient(180deg, #eef4ff 0%, #dfe9fb 100%); display: grid; place-items: center; position: relative; overflow: hidden; }
.course-thumb--card { height: 232px; padding: 10px; }
.course-thumb.has-image::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at top left, rgba(255,255,255,.82), transparent 42%), linear-gradient(180deg, rgba(255,255,255,.16), rgba(8,119,199,.08)); z-index: 0; }
.course-thumb__img { width: 100%; height: 100%; object-fit: contain; object-position: center center; display: block; position: relative; z-index: 1; transform: scale(1.02); transition: transform .28s ease, filter .28s ease; filter: saturate(1.06) contrast(1.04) drop-shadow(0 14px 20px rgba(16,24,40,.14)); }
.course-card:hover .course-thumb__img { transform: scale(1.05); filter: saturate(1.1) contrast(1.06) drop-shadow(0 18px 28px rgba(16,24,40,.18)); }
.thumb-dark { background: #0f1942; color: #fff; }
.thumb-label { position: absolute; right: 10px; top: 10px; background: #fff; color: #222; border-radius: 3px; padding: 4px 9px; font-size: 12px; font-weight: 800; }
.illus { width: 72%; height: 72%; position: relative; }
.illus::before { content: ""; position: absolute; inset: 18% 10%; background: #bfd0ff; border-radius: 6px; box-shadow: inset 0 0 0 8px rgba(255,255,255,.45); }
.illus::after { content: ""; position: absolute; left: 9%; bottom: 2%; width: 80%; height: 18%; background: linear-gradient(90deg,#8d65c9,#efcf5c,#72bad4); border-radius: 20px; }
.illus-dark::before { background: #16356e; box-shadow: none; }
.illus-dark::after { background: linear-gradient(90deg,#f7a884,#87d3db,#4e88e8); }
.course-body { padding: 22px 26px 24px; }
.tags { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; }
.tag { padding: 5px 10px; background: #f0f2f6; border-radius: 3px; color: #6d7480; font-size: 13px; }
.free { color: var(--green); font-weight: 900; }
.price-blue { color: var(--blue); font-weight: 900; }
.course-body h3 { min-height: 52px; margin-bottom: 14px; font-size: 20px; }
.course-body p { color: var(--muted); font-size: 14px; }
.course-meta { display: flex; gap: 24px; color: #6c7380; font-size: 13px; font-weight: 800; }
.course-meta span::before, .stat-line span::before { content: ""; display: inline-block; width: 13px; height: 13px; margin-right: 7px; vertical-align: -2px; border: 2px solid var(--blue); border-radius: 3px; }
.slider-row { margin-top: 42px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 24px; }
.arrows { display: flex; gap: 12px; }
.arrow { width: 43px; height: 43px; border-radius: 50%; background: #f0f2f6; color: #939aa5; display: grid; place-items: center; font-size: 24px; }
.line { height: 1px; background: #222; max-width: 210px; }
.category-box { background: var(--soft); border-radius: 5px; padding: 62px 24px; text-align: center; }
.category-pills { display: flex; justify-content: center; flex-wrap: wrap; gap: 18px; margin-top: 30px; }
.pill { background: #fff; padding: 14px 22px; border-radius: 5px; font-weight: 800; }
.learning { display: grid; grid-template-columns: 1fr 1fr; gap: 66px; align-items: center; }
.accordion { border-radius: 5px; overflow: hidden; }
.acc-item { border-bottom: 1px solid var(--line); padding: 24px 28px; }
.acc-item.active { background: var(--blue-soft); }
.acc-head { display: flex; justify-content: space-between; gap: 20px; font-size: 18px; font-weight: 900; }
.acc-item p { margin: 18px 0 0; color: #4e5865; }
.learning-art { min-height: 455px; position: relative; }
.learning-bg { position: absolute; right: 80px; bottom: 26px; width: 405px; height: 405px; background: #bfe2ff; }
.learning-dots { position: absolute; right: 0; top: 0; width: 190px; height: 148px; background-image: radial-gradient(#6aaef3 2px, transparent 2px); background-size: 20px 20px; }
.person-laptop { position: absolute; right: 72px; bottom: 0; width: 360px; height: 430px; }
.person-laptop::before { content: ""; position: absolute; left: 110px; top: 0; width: 120px; height: 120px; background: #f3c5aa; border-radius: 50%; }
.person-laptop::after { content: ""; position: absolute; left: 40px; top: 96px; width: 300px; height: 325px; background: linear-gradient(#fff 0 63%, #d9eafa 63% 100%); border-radius: 47% 47% 0 0; box-shadow: 120px 120px 0 -42px #a1a4aa; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.stat-card { border: 1px solid var(--line); border-radius: 5px; text-align: center; padding: 30px 14px 25px; }
.stat-card strong { display: block; color: var(--blue); font-size: 34px; line-height: 1; font-weight: 900; }
.stat-card:nth-child(1) strong { color: var(--green); }
.stat-card:nth-child(3) strong { color: #e9a900; }
.stat-card:nth-child(4) strong { color: #b36bd6; }
.stat-card span { font-weight: 900; }
.testimonials { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.testimonial { background: var(--soft); border-radius: 5px; overflow: hidden; }
.testimonial-head { display: grid; grid-template-columns: 58px 1fr; gap: 15px; align-items: center; padding: 28px; border-bottom: 1px solid #fff; }
.avatar { width: 58px; height: 58px; border-radius: 50%; background: linear-gradient(135deg,#153c35,#b8765c); }
.testimonial h3 { margin: 0; font-size: 18px; }
.testimonial small { color: var(--muted); }
.testimonial p { padding: 28px; margin: 0; color: #596271; }
.trust { margin-top: 36px; text-align: center; font-weight: 900; }
.trust span { display: inline-block; margin-right: 18px; background: var(--green); color: #fff; border-radius: 18px; padding: 5px 18px; }
.instructor-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.instructor-card { border: 1px solid var(--line); border-radius: 6px; overflow: hidden; text-align: center; background: #fff; }
.instructor-photo { height: 255px; background: linear-gradient(135deg,#ccd5dc,#fff); position: relative; }
.instructor-photo::before { content: ""; position: absolute; left: 50%; top: 42px; transform: translateX(-50%); width: 100px; height: 100px; border-radius: 50%; background: #27374c; }
.instructor-photo::after { content: ""; position: absolute; left: 50%; bottom: 0; transform: translateX(-50%); width: 210px; height: 132px; border-radius: 48% 48% 0 0; background: #6d4b9b; }
.instructor-card:nth-child(2) .instructor-photo::before { background: #e8d8c9; }
.instructor-card:nth-child(2) .instructor-photo::after { background: #b3262e; }
.instructor-card:nth-child(3) .instructor-photo::before { background: #c58d61; }
.instructor-card:nth-child(3) .instructor-photo::after { background: #20242a; }
.instructor-card:nth-child(4) .instructor-photo::before { background: #d0a074; }
.instructor-card:nth-child(4) .instructor-photo::after { background: #dde5ef; }
.instructor-info { padding: 28px; }
.teach-cta { margin: 20px auto 58px; width: min(1170px, calc(100% - 44px)); min-height: 260px; border-radius: 5px; background: linear-gradient(180deg,#118ee8,#97d2ff); color: #fff; text-align: center; display: grid; place-items: center; padding: 38px; position: relative; overflow: hidden; }
.teach-cta::before { content: ""; position: absolute; inset: 0; opacity: .23; background-image: radial-gradient(circle at 12% 22%, transparent 0 26px, #fff 27px 29px, transparent 30px), radial-gradient(circle at 76% 30%, transparent 0 45px, #fff 46px 48px, transparent 49px); }
.teach-cta h2 { color: #fff; }
.teach-cta p { max-width: 680px; margin-inline: auto; }
.teach-cta .outline-btn { border: 0; color: var(--blue); }
.footer { background: var(--soft); margin-top: 22px; }
.footer-top { padding: 42px 0 46px; }
.news-title { font-size: 18px; font-weight: 900; margin-bottom: 36px; padding-bottom: 28px; border-bottom: 1px solid #d8dde7; }
.footer-grid { display: grid; grid-template-columns: 1.1fr .8fr 1fr 1.2fr; gap: 54px; }
.footer h3 { font-size: 14px; margin-bottom: 16px; }
.footer p, .footer a { color: #5f6875; font-size: 13px; margin: 0 0 11px; display: block; }
.footer-meta { float: right; }
.footer-bottom { background: #fff; padding: 25px 0; }
.footer-bottom .container { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 18px; }
.legal { display: flex; gap: 40px; }
.selects { justify-self: end; display: flex; gap: 8px; }
.fake-select { background: #f0f2f7; padding: 10px 22px; border-radius: 3px; color: #596271; font-size: 13px; }
.float-re { position: fixed; left: 0; bottom: 28px; width: 38px; height: 38px; border-radius: 0 20px 20px 0; background: var(--blue); color: #fff; display: grid; place-items: center; font-size: 11px; z-index: 10; box-shadow: 0 8px 18px rgba(17,142,232,.35); }
.to-top { position: fixed; right: 15px; bottom: 25px; width: 42px; height: 42px; border-radius: 50%; border: 2px solid var(--blue); color: var(--blue); display: grid; place-items: center; background: #fff; z-index: 10; }
.to-top svg { width: 16px; height: 16px; display: block; }
.page-hero { background: var(--soft); padding: 38px 0 48px; }
.breadcrumbs { color: #8a929d; display: flex; gap: 12px; margin-bottom: 14px; font-size: 14px; }
.breadcrumbs span { color: var(--text); }
.course-layout { display: grid; grid-template-columns: minmax(0, 1fr) 350px; gap: 36px; align-items: start; }
.course-thumb--hero { height: 255px; border-radius: 8px; padding: 10px; box-shadow: 0 10px 26px rgba(24, 38, 55, .08); }
.course-hero-image { width: 100%; height: 100%; object-fit: contain; object-position: center; position: relative; z-index: 1; filter: saturate(1.08) contrast(1.05) drop-shadow(0 12px 18px rgba(16,24,40,.14)); }
.course-main { padding-top: 38px; }
.large-placeholder { height: 445px; border-radius: 6px; background: #f1f1f1; display: grid; place-items: center; margin-bottom: 24px; color: #d3d3d3; }
.large-placeholder svg { width: 380px; max-width: 70%; opacity: .7; }
.content-block { margin-bottom: 34px; }
.content-block h2 { font-size: 28px; margin-bottom: 16px; }
.content-block ul { padding-left: 20px; color: #555e6c; }
.content-block li { margin-bottom: 8px; }
.sidebar { position: sticky; top: 20px; border: 1px solid var(--line); border-radius: 6px; background: #fff; padding: 28px; }
.sidebar-thumb { height: 155px; margin: -28px -28px 22px; background: #e9eef8; display: grid; place-items: center; overflow: hidden; }
.sidebar .primary-btn { width: 100%; margin-bottom: 22px; }
.sidebar .question-form { background: #f7faff; border: 1px solid var(--line); padding: 18px; border-radius: 10px; gap: 14px; }
.sidebar .question-form label { display: grid; gap: 7px; font-weight: 800; color: #243143; }
.sidebar .question-form input,
.sidebar .question-form textarea,
.sidebar .question-form select { border: 1px solid #d5deeb; border-radius: 6px; background: #fff; padding: 12px 14px; width: 100%; color: var(--text); }
.sidebar .question-form .primary-btn { margin-bottom: 0; }
.detail-list { margin: 0; }
.detail-list div { display: flex; justify-content: space-between; gap: 16px; padding: 15px 0; border-bottom: 1px solid var(--line); }
.detail-list dt { color: #68717d; }
.detail-list dd { margin: 0; font-weight: 900; }
.membership { margin: 24px 0; color: #3d4652; }
.wishlist { display: flex; justify-content: space-between; margin-bottom: 26px; }
.featured-review { border-top: 1px solid var(--line); padding-top: 22px; }
.quote-icon { width: 44px; height: 44px; border-radius: 50%; background: #f0f2f6; display: inline-grid; place-items: center; font-size: 28px; color: #555; }
.stars { color: var(--yellow); text-align: right; letter-spacing: 4px; }
.tabs-card { border: 1px solid var(--line); border-radius: 8px; padding: 26px; background: #fff; }
.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 26px; }
.tab { border: 0; border-radius: 5px; background: #f0f2f7; padding: 15px 31px; font-weight: 900; cursor: pointer; }
.tab.active { background: var(--blue); color: #fff; }
.check-list { list-style: none; padding: 0; }
.check-list li::before { content: "?"; color: var(--green); margin-right: 9px; }
.curriculum-head { display: flex; justify-content: space-between; margin-bottom: 18px; }
.curriculum-section { background: var(--blue-soft); border-radius: 6px; padding: 15px 26px; margin-bottom: 8px; }
.curriculum-title { display: flex; justify-content: space-between; font-weight: 900; }
.lesson { display: flex; justify-content: space-between; padding: 13px 26px; color: #3e4652; }
.faq-box { border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.faq-box details { padding: 20px 28px; border-bottom: 1px solid var(--line); }
.faq-box details:last-child { border-bottom: 0; }
.faq-box summary { font-weight: 900; cursor: pointer; display: flex; justify-content: space-between; }
.faq-box summary::after { content: "+"; font-size: 24px; }
.review-score { display: grid; grid-template-columns: 160px 1fr; gap: 28px; align-items: center; }
.big-score { font-size: 78px; line-height: 1; }
.bar-row { display: grid; grid-template-columns: 22px 18px 1fr 20px; gap: 10px; align-items: center; color: #9aa1aa; }
.bar { height: 13px; background: #edf0f4; border-radius: 2px; }
.instructor-mini { display: grid; grid-template-columns: 170px 1fr; gap: 26px; align-items: center; }
.instructor-avatar { width: 170px; height: 135px; background: #cfcfcf; border-radius: 5px; position: relative; overflow: hidden; }
.instructor-avatar::before { content: ""; position: absolute; left: 50%; top: 38px; transform: translateX(-50%); width: 58px; height: 58px; border-radius: 50%; background: #fff; }
.instructor-avatar::after { content: ""; position: absolute; left: 50%; bottom: -30px; transform: translateX(-50%); width: 135px; height: 100px; border-radius: 50% 50% 0 0; background: #fff; }
.instructor-avatar.has-photo::before, .instructor-avatar.has-photo::after { display: none; }
.instructor-avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }
.question-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 55px; }
.question-form { background: var(--soft); border-radius: 6px; padding: 30px; display: grid; gap: 18px; }
.question-form input, .question-form textarea { border: 0; border-radius: 5px; background: #fff; padding: 15px 18px; width: 100%; }
.admin-body .question-form input,
.admin-body .question-form textarea,
.admin-body .question-form select { border: 1px solid #d5deeb; background: #fbfcff; }
.admin-body .question-form label { display: grid; gap: 8px; font-weight: 800; color: #243143; }
.admin-body .tabs-card > .question-form { background: transparent; padding: 0; }
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .55s ease, transform .55s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
@media (max-width: 980px) {
  .header-main { height: auto; min-height: 92px; grid-template-columns: auto auto; padding: 18px 0; }
  .logo { width: min(var(--logo-width, 220px), 160px); min-height: auto; }
  .logo svg { width: 96px; height: 68px; }
  .logo img { max-width: min(var(--logo-width, 220px), 160px); max-height: min(var(--logo-height, 120px), 72px); }
  .nav { grid-column: 1 / -1; display: none; width: 100%; flex-direction: column; align-items: flex-start; padding: 18px; background: var(--soft); border-radius: 8px; }
  .nav.is-open { display: flex; }
  .actions { gap: 8px; }
  .actions .icon-btn, .actions .login-btn { display: none; }
  .menu-toggle { display: inline-block; }
  .hero-grid, .learning, .course-layout, .question-grid { grid-template-columns: 1fr; }
  .feature-row, .stats-grid, .testimonials, .instructor-grid, .course-grid, .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-row { grid-template-columns: 1fr; text-align: center; }
  .logos { flex-wrap: wrap; justify-content: center; }
  .sidebar { position: static; }
}
@media (max-width: 640px) {
  .container { width: min(100% - 28px, var(--container)); }
  .topbar { height: auto; padding: 7px 14px; text-align: center; }
  .header-main { grid-template-columns: 1fr auto; }
  .hero { padding-top: 28px; }
  .hero-art { min-height: 305px; transform: scale(.82); transform-origin: left top; }
  .feature-row, .stats-grid, .testimonials, .instructor-grid, .course-grid, .footer-grid, .footer-bottom .container { grid-template-columns: 1fr; }
  .mini-feature { border-right: 0; border-bottom: 1px solid #dce1ea; padding-bottom: 18px; }
  .course-body h3 { min-height: auto; }
  .slider-row { grid-template-columns: 1fr; }
  .line { display: none; }
  .learning-art { display: none; }
  .footer-bottom .container, .legal { justify-items: center; justify-content: center; text-align: center; }
  .selects { justify-self: center; }
  .tabs { display: grid; grid-template-columns: 1fr 1fr; }
  .tab { padding-inline: 10px; }
  .review-score, .instructor-mini { grid-template-columns: 1fr; }
}

/* Interactive refinements requested after visual review */
.partner-slider { overflow: hidden; position: relative; }
.logo-track { display: flex; width: max-content; gap: 54px; align-items: center; animation: partnerMarquee 22s linear infinite; }
.logo-track:hover { animation-play-state: paused; }
.logo-track span { min-width: 170px; text-align: center; color: #7b7d81; font-size: clamp(22px, 2.4vw, 35px); font-weight: 900; filter: grayscale(1); opacity: .85; }
@keyframes partnerMarquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

.course-carousel { overflow: hidden; }
.course-track { display: flex; gap: 28px; transition: transform .45s cubic-bezier(.2,.8,.2,1); will-change: transform; }
.course-track .course-card { flex: 0 0 calc((100% - 84px) / 4); position: relative; }
.course-overlay { position: absolute; inset: 0; display: grid; align-content: end; gap: 10px; padding: 24px; background: linear-gradient(180deg, rgba(17,142,232,0), rgba(17,142,232,.94)); color: #fff; opacity: 0; transform: translateY(10px); transition: .28s ease; z-index: 2; }
.course-card:hover .course-overlay, .course-card:focus-within .course-overlay { opacity: 1; transform: translateY(0); }
.course-overlay h3 { margin: 0; min-height: auto; color: #fff; }
.course-overlay p { color: rgba(255,255,255,.88); margin: 0; }
.course-overlay .outline-btn { width: fit-content; color: #fff; border-color: #fff; background: transparent; }
.course-overlay .outline-btn:hover { background: #fff; color: var(--blue); }
.course-card.is-hidden { display: none; }
.admin-actions button:disabled { opacity: .5; cursor: not-allowed; }
.slider-btn { border: 0; cursor: pointer; }
.slider-btn:disabled { opacity: .4; cursor: not-allowed; }
.pill { cursor: pointer; border: 0; transition: .2s ease; }
.pill:hover, .pill.active { background: var(--blue); color: #fff; transform: translateY(-1px); }
.acc-item { cursor: pointer; }
.acc-item:not(.active) p { display: none; }
.curriculum-section { cursor: pointer; }
.curriculum-group.is-collapsed .lesson { display: none; }
.whatsapp-float { position: fixed; right: 70px; bottom: 25px; width: 50px; height: 50px; border-radius: 50%; background: #25d366; color: #fff; display: grid; place-items: center; font-weight: 900; z-index: 20; box-shadow: 0 12px 26px rgba(37,211,102,.35); animation: whatsPulse 2.4s ease-in-out infinite; }
@keyframes whatsPulse { 0%,100% { transform: scale(1); box-shadow: 0 12px 26px rgba(37,211,102,.35); } 50% { transform: scale(1.06); box-shadow: 0 14px 34px rgba(37,211,102,.55); } }
.reveal-pop { animation: popIn .6s cubic-bezier(.2,.8,.2,1) both; }
@keyframes popIn { from { opacity: 0; transform: scale(.96) translateY(14px); } to { opacity: 1; transform: scale(1) translateY(0); } }

.admin-body { background: #f3f6fb; }
.admin-shell { display: grid; grid-template-columns: 270px 1fr; min-height: 100vh; }
.admin-sidebar { background: #101828; color: #d7deea; padding: 26px 22px; }
.admin-brand { display: flex; align-items: center; gap: 12px; color: #fff; font-weight: 900; font-size: 22px; margin-bottom: 34px; }
.admin-brand span:first-child { width: 42px; height: 42px; border-radius: 12px; background: var(--blue); display: grid; place-items: center; }
.admin-menu { display: grid; gap: 8px; }
.admin-menu a { padding: 12px 14px; border-radius: 8px; color: #d7deea; font-weight: 800; }
.admin-menu a.active, .admin-menu a:hover { background: #1d9bf0; color: #fff; }
.admin-menu-grouped { gap: 12px; }
.admin-menu-group { border: 1px solid rgba(255,255,255,.08); border-radius: 12px; background: rgba(255,255,255,.03); overflow: hidden; }
.admin-menu-group summary { list-style: none; cursor: pointer; padding: 12px 14px; font-weight: 900; color: #fff; display: flex; align-items: center; justify-content: space-between; }
.admin-menu-group summary::-webkit-details-marker { display: none; }
.admin-menu-group summary::after { content: "+"; font-size: 18px; color: #9fb1c8; }
.admin-menu-group[open] summary::after { content: "-"; }
.admin-submenu { display: grid; gap: 6px; padding: 0 10px 10px; }
.admin-submenu a { font-size: 14px; padding-left: 16px; }
.admin-main { padding: 28px; }
.admin-top { display: flex; justify-content: space-between; gap: 20px; align-items: center; margin-bottom: 24px; }
.admin-top h1 { font-size: 30px; margin: 0; }
.admin-user { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; font-weight: 900; }
.admin-kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 18px; margin-bottom: 22px; }
.admin-card { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 20px; box-shadow: 0 8px 22px rgba(24,38,55,.04); }
.admin-card h2 { margin: 0 0 10px; font-size: 26px; }
.admin-card h3 { margin: 0 0 10px; }
.admin-card strong { display: block; font-size: 30px; color: var(--blue); line-height: 1; margin-bottom: 8px; }
.admin-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 20px; }
.admin-finance-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table-wrap { overflow-x: auto; }
.admin-table th, .admin-table td { padding: 13px 10px; border-bottom: 1px solid var(--line); text-align: left; font-size: 14px; }
.admin-header-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.admin-actions { display: flex; gap: 10px; align-items: center; }
.admin-actions form { margin: 0; }
.admin-inline-tools,
.admin-inline-form { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.admin-inline-tools input,
.admin-inline-tools select,
.admin-inline-form input,
.admin-inline-form select { min-width: 180px; }
.danger-btn { border-color: #ef4444; color: #ef4444; }
.danger-btn:hover { background: #ef4444; color: #fff; }
.status { display: inline-flex; padding: 5px 10px; border-radius: 20px; background: #e7f7ef; color: #15803d; font-weight: 900; font-size: 12px; }
.admin-block-list { display: grid; gap: 10px; }
.admin-block-list div { display: flex; justify-content: space-between; gap: 12px; padding: 13px; border: 1px solid var(--line); border-radius: 9px; background: #fbfcff; }
.admin-note { color: var(--muted); font-size: 14px; }
.ads-connections-layout { display: grid; grid-template-columns: minmax(360px, 520px) minmax(280px, 1fr); gap: 20px; align-items: start; }
.ads-connections-shell { display: grid; gap: 20px; }
.ads-connection-editor { max-width: none; }
.ads-connection-statebar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 16px; }
.ads-connection-form { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.ads-connections-table { display: grid; gap: 14px; }
.ads-connection-row { display: grid; grid-template-columns: minmax(0, 1fr) 220px; gap: 18px; align-items: start; padding: 18px; border: 1px solid var(--line); border-radius: 12px; background: #fbfcff; }
.ads-connection-main h3 { margin: 0 0 6px; font-size: 20px; }
.ads-connection-meta { display: flex; flex-wrap: wrap; gap: 10px; margin: 12px 0; }
.ads-connection-stats { display: flex; flex-wrap: wrap; gap: 14px; color: var(--muted); font-size: 14px; }
.ads-action-stack { display: grid; gap: 10px; justify-items: stretch; }
.ads-action-stack form,
.ads-action-stack a { width: 100%; margin: 0; }
.ads-action-stack .outline-btn,
.ads-action-stack .primary-btn { width: 100%; }
.ads-checklist { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }
.ads-check-item { display: grid; gap: 6px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; background: #fbfcff; }
.ads-check-item strong { display: block; font-size: 16px; color: #182637; margin: 0; }
.ads-check-item span { color: #6b7280; font-weight: 800; }
.ads-check-item.is-done { background: #eefbf3; border-color: #b9e7c7; }
.ads-check-item.is-done span { color: #15803d; }
.admin-debug-box { margin-top: 8px; padding: 14px 16px; border: 1px solid #f0c7c7; border-radius: 10px; background: #fff7f7; color: #7f1d1d; white-space: pre-wrap; overflow-wrap: anywhere; font: 13px/1.5 ui-monospace, SFMono-Regular, Consolas, monospace; }
.public-richtext { line-height: 1.85; font-size: 16px; white-space: pre-wrap; }
@media (max-width: 980px) { .featured-courses-grid { grid-template-columns: repeat(2, 1fr); } .course-track .course-card { flex-basis: calc((100% - 28px) / 2); } .admin-shell { grid-template-columns: 1fr; } .admin-sidebar { position: static; } .admin-kpis, .admin-grid { grid-template-columns: 1fr 1fr; } .ads-connections-layout, .ads-connection-row, .ads-connection-form { grid-template-columns: 1fr; } .ads-action-stack { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .featured-courses-grid { grid-template-columns: 1fr; } .course-track .course-card { flex-basis: 100%; } .whatsapp-float { right: 68px; bottom: 76px; } .admin-kpis, .admin-grid { grid-template-columns: 1fr; } .ads-action-stack { grid-template-columns: 1fr; } }

.catalog-toolbar { background: var(--soft); border-radius: 8px; padding: 22px; display: grid; grid-template-columns: 1.2fr .8fr .8fr auto; gap: 14px; align-items: end; margin-bottom: 30px; }
.catalog-toolbar label { display: grid; gap: 7px; font-weight: 900; color: #323946; }
.catalog-toolbar input, .catalog-toolbar select { border: 1px solid var(--line); border-radius: 5px; padding: 13px 14px; background: #fff; color: var(--text); }
.catalog-results-note { color: var(--muted); margin-bottom: 18px; font-weight: 800; }
.empty-state { display: none; padding: 36px; border: 1px dashed #c9d1df; border-radius: 8px; background: #fbfcff; color: var(--muted); text-align: center; }
.catalog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.video-box { border-radius: 8px; overflow: hidden; background: #101828; aspect-ratio: 16 / 9; display: grid; place-items: center; color: #fff; margin-bottom: 20px; }
.video-box iframe { width: 100%; height: 100%; border: 0; }
.video-upload-placeholder { text-align: center; padding: 30px; }
.video-upload-placeholder strong { display: block; font-size: 22px; margin-bottom: 8px; }
.availability-badge { display: inline-flex; padding: 5px 10px; border-radius: 18px; background: #e8f7ee; color: #18803a; font-size: 12px; font-weight: 900; margin-bottom: 10px; }
.availability-badge.scheduled { background: #fff4d8; color: #a16207; }
@media (max-width: 980px) { .catalog-toolbar, .catalog-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .catalog-toolbar, .catalog-grid { grid-template-columns: 1fr; } }

/* Final prototype refinements */
.course-overlay { background: #0877c7; opacity: 0; color: #fff; }
.course-overlay::before { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, #118ee8 0%, #066ab4 100%); z-index: -1; }
.course-overlay h3, .course-overlay p { text-shadow: none; }
.related-courses { margin-top: 46px; padding-top: 34px; border-top: 1px solid var(--line); }
.related-courses h2 { font-size: 28px; margin-bottom: 22px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.related-grid .course-card .course-thumb { height: 180px; }
.related-grid .course-body { padding: 18px; }
.related-grid .course-body h3 { font-size: 17px; min-height: auto; }
.mfa-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 20px; align-items: start; }
.qr-demo { width: 190px; height: 190px; background: #fff; border: 10px solid #fff; box-shadow: 0 8px 22px rgba(24,38,55,.08); display: grid; grid-template-columns: repeat(7,1fr); gap: 4px; padding: 8px; }
.qr-demo span { background: #101828; border-radius: 2px; }
.recovery-codes { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin-top: 14px; }
.recovery-codes code { background: #f3f6fb; border: 1px solid var(--line); border-radius: 6px; padding: 9px 10px; font-weight: 900; color: #20242a; }
.auth-flow { counter-reset: auth; display: grid; gap: 10px; }
.auth-flow div { position: relative; padding: 12px 12px 12px 42px; background: #fbfcff; border: 1px solid var(--line); border-radius: 8px; }
.auth-flow div::before { counter-increment: auth; content: counter(auth); position: absolute; left: 12px; top: 12px; width: 22px; height: 22px; border-radius: 50%; background: var(--blue); color: #fff; display: grid; place-items: center; font-size: 12px; font-weight: 900; }
@media (max-width: 980px) { .related-grid, .mfa-grid { grid-template-columns: 1fr; } }

/* Auth/admin form polish */
.auth-page { min-height: 100vh; display: grid; place-items: center; padding: 34px 16px; background: #f3f6fb; }
.auth-card { width: min(100%, 760px); background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: clamp(26px, 4vw, 42px); box-shadow: 0 16px 45px rgba(24,38,55,.08); }
.auth-card h1 { font-size: clamp(36px, 6vw, 58px); line-height: 1.05; margin-bottom: 22px; }
.auth-form { display: grid; gap: 18px; }
.auth-form label { display: grid; gap: 8px; font-weight: 900; color: #20242a; }
.auth-form input { width: 100%; min-height: 46px; border: 1px solid #cfd6e2; border-radius: 5px; padding: 11px 14px; background: #fff; color: var(--text); }
.auth-form .primary-btn { width: fit-content; min-width: 130px; }
.auth-inline { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: end; }
.mfa-setup-grid { display: grid; grid-template-columns: 250px 1fr; gap: 26px; align-items: start; }
.mfa-qr-card { border: 1px solid var(--line); border-radius: 12px; padding: 18px; background: #fbfcff; text-align: center; }
.mfa-qr-card img { width: 220px; height: 220px; margin: 0 auto 12px; image-rendering: pixelated; }
.secret-box { overflow-wrap: anywhere; word-break: break-word; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; background: #f3f6fb; border: 1px solid var(--line); border-radius: 8px; padding: 12px; font-size: 13px; }
.auth-help { color: var(--muted); margin: 12px 0 0; }
@media (max-width: 720px) { .auth-inline, .mfa-setup-grid { grid-template-columns: 1fr; } .auth-form .primary-btn { width: 100%; } }

/* Fix catalog hover containment and form controls */
.course-card { position: relative; overflow: hidden; }
.catalog-grid .course-card { position: relative; overflow: hidden; }
.catalog-grid .course-overlay,
.course-grid .course-overlay,
.related-grid .course-overlay { inset: 0; width: auto; height: auto; min-height: 100%; }
.course-overlay { border-radius: inherit; pointer-events: none; }
.course-overlay .outline-btn { pointer-events: auto; }

select,
.catalog-toolbar select,
.question-form select,
.auth-form select,
.admin-card select {
  width: 100%;
  min-height: 46px;
  border: 1px solid #cfd6e2;
  border-radius: 6px;
  padding: 11px 42px 11px 14px;
  background-color: #fff;
  color: var(--text);
  font-weight: 700;
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, #5f6875 50%), linear-gradient(135deg, #5f6875 50%, transparent 50%);
  background-position: calc(100% - 18px) 19px, calc(100% - 12px) 19px;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}
select:focus,
.catalog-toolbar input:focus,
.question-form input:focus,
.question-form textarea:focus {
  outline: 3px solid rgba(17,142,232,.18);
  border-color: var(--blue);
}
.admin-actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.admin-form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.admin-form-grid .full { grid-column: 1 / -1; }
.admin-subcard { border: 1px solid #dde4f0; border-radius: 12px; padding: 18px; background: #f9fbff; }
.admin-subcard h4 { margin: 0 0 14px; font-size: 18px; }
.admin-stack { display: grid; gap: 14px; }
.admin-role-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.admin-check-card { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border: 1px solid #d9e2f0; border-radius: 12px; background: #fbfcff; font-weight: 800; }
.admin-check-card input { width: auto; min-height: auto; }
.admin-avatar-thumb { width: 54px; height: 54px; border-radius: 50%; object-fit: cover; display: block; }
.admin-card code { background: #f3f6fb; border: 1px solid var(--line); border-radius: 6px; padding: 2px 6px; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; }
.home-layout-list { display: grid; gap: 12px; }
.layout-item { display: grid; grid-template-columns: 28px 1fr auto auto; gap: 14px; align-items: center; padding: 14px 16px; border: 1px solid #d9e2f0; border-radius: 12px; background: #fff; box-shadow: 0 6px 16px rgba(24, 38, 55, .04); }
.layout-item.is-dragging { opacity: .55; border-style: dashed; }
.layout-handle { cursor: grab; color: #7b8797; font-size: 20px; user-select: none; padding: 6px 4px; }
.layout-handle:active { cursor: grabbing; }
.layout-copy strong { display: block; }
.layout-copy small { color: var(--muted); }
.layout-actions { display: inline-flex; align-items: center; gap: 8px; }
.layout-move { border: 1px solid #d9e2f0; background: #f5f8fd; color: var(--accent); border-radius: 999px; padding: 8px 12px; font-weight: 700; cursor: pointer; transition: transform .18s ease, background .18s ease, border-color .18s ease; }
.layout-move:hover { background: #eaf3ff; border-color: #b8d6ff; transform: translateY(-1px); }
.layout-toggle { display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; }
@media (max-width: 900px) {
  .layout-item { grid-template-columns: 28px 1fr; }
  .layout-actions, .layout-toggle { grid-column: 2; }
}
@media (max-width: 720px) { .admin-form-grid { grid-template-columns: 1fr; } }
@media (max-width: 980px) { .admin-role-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .admin-role-grid { grid-template-columns: 1fr; } }