/* Learning design: readable editorial pages, quiet navigation, violet used for state. */
.detail-hero--cover-first>.detail-catalog-link{grid-column:1 / -1;grid-row:1;justify-self:start;margin:0;line-height:1.6}
.detail-hero--cover-first{grid-template-columns:minmax(0,.95fr) minmax(0,1fr);align-items:center;padding:44px 0 64px;gap:clamp(36px,6vw,90px)}
.detail-hero--cover-first .detail-visual{grid-column:1;grid-row:2;min-height:0;aspect-ratio:4/5;align-self:center;border:0;border-radius:18px;overflow:hidden;width:100%}
.detail-hero--cover-first .detail-copy{grid-column:2;grid-row:2;min-width:0;padding:0;align-self:end}
.detail-hero--cover-first .detail-copy h1{font-size:clamp(34px,4.2vw,62px);line-height:1.16;letter-spacing:-.045em;overflow-wrap:normal;word-break:normal}
.detail-hero--cover-first .detail-action{display:flex;flex-direction:column;align-items:flex-start;gap:16px;margin-top:24px;padding-top:0}
.detail-hero--cover-first .detail-price{display:block;margin:0;padding:0;text-align:left;font-size:24px;line-height:1.3}
.detail-hero--cover-first .detail-action form{margin:0;width:auto}
.detail-hero--cover-first .detail-action .button{min-width:185px;justify-content:center}
.detail-hero--cover-first .detail-visual{align-self:end}
.marketing-art{position:relative;overflow:hidden}
.marketing-art::before{content:"";position:absolute;inset:0;background:url('/course-weave.svg') right center / cover no-repeat;mask-image:linear-gradient(90deg,transparent 35%,#0003 65%,#000 88%);pointer-events:none;z-index:-1}
.marketing-art::after{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 100% 12%,#eadbff66,transparent 50%);pointer-events:none;z-index:-1}
.marketing-art{display:flex;flex-direction:column;justify-content:space-between;width:100%;height:100%;padding:clamp(22px,3.6vw,48px);color:#28232e;background:radial-gradient(ellipse at 100% 0%,#d4c3ee,transparent 65%),#b9b0c7;isolation:isolate}
.marketing-art__center{margin:30px 0;min-width:0}.marketing-art__label{font-size:11px;letter-spacing:.15em;font-weight:700}.marketing-art__center>strong{display:block;margin:16px 0 36px;font-size:clamp(30px,3.9vw,57px);line-height:1.15;letter-spacing:-.045em;font-weight:700;word-break:normal;overflow-wrap:normal}.marketing-art__center em{font-family:'Playfair Display',Georgia,serif;font-weight:500}.marketing-art__diagram{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:11px;font-weight:600;line-height:1.7}.marketing-art__diagram i{height:1px;width:16px;background:currentColor;opacity:.4}.marketing-art .cover-bottom{font-size:9px;line-height:1.6;gap:14px}.marketing-art .cover-kicker{font-size:10px;line-height:1.7}
.product-card__art .marketing-art{padding:25px}.product-card__art .marketing-art__center{margin:14px 0}.product-card__art .marketing-art__center>strong{font-size:clamp(27px,3vw,40px);margin:9px 0 15px}.product-card__art .marketing-art__diagram{display:none}
.has-registration-dialog{overflow:hidden}.registration-dialog{width:min(480px,calc(100% - 28px));max-height:calc(100dvh - 32px);margin:auto;padding:30px;border:1px solid var(--line);border-radius:16px;background:var(--panel);color:var(--ink);box-shadow:0 30px 100px #0006;overflow:auto}.registration-dialog::backdrop{background:#0009;backdrop-filter:blur(5px)}.registration-dialog__top{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-bottom:30px}.registration-dialog__top .brand{font-size:24px}.dialog-close{border:0;background:transparent;color:var(--muted);padding:10px 0 10px 10px;cursor:pointer;font:inherit;font-size:12px}.dialog-close:hover{color:var(--ink)}.registration-dialog h2{font-size:30px;line-height:1.2;letter-spacing:-.035em;margin:12px 0}.registration-dialog>p{font-size:14px;line-height:1.7;color:var(--muted)}.registration-dialog .form-stack{margin-top:22px;gap:14px}.registration-dialog .field{margin:0}.registration-dialog .field-hint{margin:0;font-size:12px}.registration-dialog .auth-switch{margin:22px 0 0}.registration-dialog .button{width:100%}
@media(max-width:760px){.detail-hero--cover-first{grid-template-columns:1fr;padding-top:25px;gap:32px}.detail-hero--cover-first .detail-visual{grid-column:1;grid-row:2;aspect-ratio:5/4;max-width:480px;justify-self:center}.detail-hero--cover-first .detail-copy{grid-column:1;grid-row:3}.detail-hero--cover-first .detail-copy h1{font-size:clamp(33px,8vw,48px)}.detail-hero--cover-first .detail-copy .back-link{margin-bottom:24px}.marketing-art__center{margin:20px 0}.marketing-art__center>strong{font-size:clamp(30px,7.4vw,46px);margin:10px 0 20px}.marketing-art{padding:24px}.marketing-art__diagram{gap:7px;font-size:10px}.marketing-art__diagram i{width:10px}.registration-dialog{padding:24px}.registration-dialog h2{font-size:27px}}
:root{--course-violet:#bca2eb;--course-tint:#a27bd212;--course-good:#a4cbb2}
:root[data-theme=light]{--course-violet:#694198;--course-tint:#8661b810;--course-good:#30694c}
.course-workspace{padding:24px 0 80px}.course-breadcrumb{display:flex;gap:12px;flex-wrap:wrap;font-size:12px;line-height:1.7;color:var(--muted);padding-bottom:30px;border-bottom:1px solid var(--line)}
.course-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:clamp(32px,5vw,76px);padding-top:36px;align-items:start}.course-main{min-width:0;max-width:850px;width:100%;margin-inline:auto}.course-sidebar{position:sticky;top:24px;min-width:0}.course-sidebar summary{font-size:13px;font-weight:700;cursor:pointer;line-height:1.6}.course-sidebar summary>span{float:right;color:var(--muted);font-variant-numeric:tabular-nums}.course-sidebar progress{margin:15px 0 22px}.course-workspace progress{appearance:none;width:100%;height:3px;border:0;background:var(--line);color:var(--course-violet);border-radius:4px;overflow:hidden}.course-workspace progress::-webkit-progress-bar{background:var(--line)}.course-workspace progress::-webkit-progress-value{background:var(--course-violet);transition:width .25s}.course-workspace progress::-moz-progress-bar{background:var(--course-violet)}
.course-nav{display:grid;grid-template-columns:22px minmax(0,1fr) 12px;gap:10px;align-items:start;padding:12px 10px;margin:2px -10px;border-radius:8px;font-size:12px;line-height:1.5}.course-nav strong{font-weight:600;display:block}.course-nav small{display:block;font-size:10px;line-height:1.6;margin-top:3px;color:var(--muted)}.course-nav__number{font-size:10px;color:var(--muted);padding-top:3px;font-variant-numeric:tabular-nums}.course-nav.is-current{background:var(--course-tint);color:var(--course-violet)}.course-nav.is-locked{color:var(--muted)}a.course-nav:hover{background:var(--panel)}.course-sidebar__note{font-size:11px;line-height:1.8;color:var(--muted);margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}
.course-main h1{font-size:clamp(32px,3.8vw,53px);line-height:1.17;letter-spacing:-.04em;font-weight:700;margin:20px 0 24px;text-wrap:balance;overflow-wrap:break-word}.course-main h1 em{font-family:'Playfair Display',Georgia,serif;font-weight:500;color:var(--accent)}.course-main p{line-height:1.8}.course-welcome{padding:28px 0 42px;background:radial-gradient(ellipse at 92% 10%,var(--course-tint),transparent 65%)}.course-welcome>p{max-width:60ch;font-size:17px}.course-facts{display:flex;gap:24px;flex-wrap:wrap;margin:30px 0;font-size:12px;color:var(--muted)}.course-facts b{font-size:20px;color:var(--ink);margin-right:4px}.course-how{border-top:1px solid var(--line);padding:30px 0}.course-how h2{font-size:25px;letter-spacing:-.025em}.course-how p{font-size:15px;max-width:65ch}.course-lesson-head{padding-bottom:26px;border-bottom:1px solid var(--line)}.course-page-progress{display:flex;align-items:center;gap:22px;margin-top:18px;color:var(--muted);font-size:11px}.course-page-progress>span{white-space:nowrap}.course-page-progress progress{max-width:170px}.course-page{padding:34px 0}.course-kicker{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--course-violet);font-weight:700}.course-explanation{font-size:17px;color:var(--ink);max-width:65ch;margin:0}
.course-diagram{margin:32px 0 0;padding:25px 28px;border:1px solid var(--line);border-radius:12px;background:linear-gradient(125deg,var(--course-tint),transparent 60%),var(--panel);min-width:0}.course-diagram figcaption{font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:24px}.course-diagram__items{display:grid;gap:0}.course-diagram__item{min-width:0;display:grid;grid-template-columns:25px minmax(0,1fr);gap:12px;padding:16px 0;border-top:1px solid var(--line)}.course-diagram__item:first-child{border-top:0;padding-top:0}.course-diagram__item:last-child{padding-bottom:0}.course-diagram__number{font-size:10px;color:var(--course-violet);padding-top:5px}.course-diagram__item strong{font-size:15px;line-height:1.6;display:block;font-weight:600}.course-diagram__item div>span{display:block;font-size:14px;line-height:1.75;white-space:pre-line;color:var(--muted);margin-top:6px}.course-diagram--pairs .course-diagram__items{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 30px}.course-diagram--pairs .course-diagram__item{padding:0;border:0}.course-controls{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:24px 0;border-top:1px solid var(--line);flex-wrap:wrap}.course-controls form{margin:0}.course-controls .button{line-height:1.5;text-align:center}.course-saved{font-size:12px;color:var(--course-good)}
.course-quiz-head{padding-top:16px;margin-bottom:32px}.course-quiz-head>p{font-size:15px;max-width:60ch}.course-question{border:0;padding:0;margin:0 0 34px;min-width:0}.course-question legend{display:flex;gap:14px;font-size:18px;font-weight:700;line-height:1.6;margin-bottom:18px;padding:0;width:100%;letter-spacing:-.015em}.course-question legend>span{font-size:11px;letter-spacing:0;color:var(--course-violet);padding-top:6px;flex:none}.course-option{display:flex;align-items:start;gap:13px;border:1px solid var(--line);border-radius:8px;margin:9px 0;padding:15px 18px;cursor:pointer;font-size:14px;line-height:1.7;transition:background .18s,border-color .18s}.course-option:hover{background:var(--panel)}.course-option:has(input:checked){background:var(--course-tint);border-color:var(--course-violet)}.course-option input{appearance:auto;accent-color:var(--course-violet);width:17px;height:17px;min-height:0;margin:4px 0 0;flex:0 0 17px}.course-option span{min-width:0}.course-answer{padding:14px 18px;border-left:2px solid var(--accent);margin-top:16px;font-size:13px}.course-answer p{margin:6px 0 0}.course-answer.is-success{border-color:var(--course-good)}.course-answer.is-success>strong{color:var(--course-good)}.course-feedback{padding:24px;border:1px solid var(--line);border-radius:12px;background:var(--panel);margin-bottom:32px;scroll-margin-top:30px}.course-feedback strong{font-size:18px;line-height:1.5}.course-feedback.is-success{border-color:var(--course-good)}.course-feedback p{font-size:14px}.course-message{padding:30px 0}
.marketing-cover{display:flex;flex-direction:column;justify-content:space-between;min-height:440px;padding:38px 0 24px;background:radial-gradient(ellipse at 84% 35%,#9670cc23,transparent 66%);border-top:1px solid var(--line);border-bottom:1px solid var(--line);width:100%}.marketing-cover__meta{display:flex;justify-content:space-between;gap:18px;font-size:10px;letter-spacing:.13em;color:var(--muted)}.marketing-cover__title{font-size:clamp(36px,4.4vw,66px);line-height:1.15;letter-spacing:-.055em;font-weight:700;margin:35px 0;overflow-wrap:break-word}.marketing-cover__title em{font-family:'Playfair Display',Georgia,serif;font-weight:500;color:var(--course-violet);letter-spacing:-.045em}.marketing-cover__path{display:flex;flex-wrap:wrap;gap:10px 20px;color:var(--muted);font-size:12px;line-height:1.7;margin:0 0 28px}.marketing-cover__bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:12px}.marketing-cover__bottom strong{color:var(--accent)}.studio-object:has(.marketing-cover) .object-stage{height:auto;display:block}.studio-object:has(.marketing-cover) .featured-caption{border-top:0}
@keyframes course-enter{from{opacity:.5;transform:translateY(5px)}to{opacity:1;transform:none}}
@media(prefers-reduced-motion:no-preference){.course-page,.course-feedback{animation:course-enter .22s ease-out both}}
@media(max-width:1000px){.course-layout{grid-template-columns:210px minmax(0,1fr);gap:32px}.course-main h1{font-size:36px}.course-diagram--pairs .course-diagram__items{grid-template-columns:1fr}.course-explanation{font-size:16px}}
@media(max-width:760px){.course-workspace{padding:12px 0 48px}.course-breadcrumb{font-size:11px;padding-bottom:20px;gap:8px}.course-layout{display:block;padding-top:20px}.course-sidebar{position:static;margin-bottom:30px;border-bottom:1px solid var(--line);padding-bottom:18px}.course-sidebar nav{max-height:330px;overflow:auto;padding:0 10px}.course-sidebar__note{display:none}.course-sidebar summary{padding:6px 0}.course-sidebar progress{margin:16px 0}.course-welcome{padding-top:0}.course-main h1{font-size:clamp(29px,7.5vw,43px);letter-spacing:-.035em;line-height:1.2}.course-diagram{padding:22px 20px}.course-page{padding-top:28px}.course-facts{gap:15px}.course-question legend{font-size:16px}.course-option{padding:13px;font-size:14px}.course-controls{gap:12px}.course-controls .button{padding:12px 16px;font-size:12px}.marketing-cover{min-height:350px;padding-top:28px}.marketing-cover__title{font-size:clamp(38px,9vw,58px)}}
@media(max-width:390px){.course-controls{align-items:stretch}.course-controls>*{flex:1 1 100%}.course-controls button{width:100%}.course-question legend{gap:9px}.course-diagram{padding:18px 15px}.course-diagram__item{gap:7px}.course-facts{font-size:11px}}


.detail-hero.detail-hero--cover-first{row-gap:24px}