/* Free, self-paced Modeller lessons and further training. */
.courses-page { min-width: 0; background: #fff; color: #142a40; font-family: 'IBM Plex Sans', Arial, sans-serif; -webkit-font-smoothing: antialiased; }
.courses-page *, .courses-page *::before, .courses-page *::after { box-sizing: border-box; }
.courses-page [hidden] { display: none !important; }
.courses-page :is(h1, h2, h3, h4, p, li, a) { overflow-wrap: anywhere; }
.courses-page :is(a, button, summary):focus-visible { outline: 3px solid #254e76; outline-offset: 4px; }
.courses-page [id] { scroll-margin-top: 150px; }
.courses-page h2 { margin: 0; font-size: clamp(30px, 3vw, 42px); font-weight: 500; line-height: 1.2; letter-spacing: -.035em; }
.courses-page h3 { margin: 0; font-weight: 500; line-height: 1.3; letter-spacing: -.025em; }
.courses-page p { margin: 0; font-size: 15px; line-height: 1.8; }
.courses-eyebrow { display: flex; align-items: center; gap: 10px; margin-bottom: 18px !important; color: #41576a; font-size: 11px !important; font-weight: 500; line-height: 1.5 !important; letter-spacing: .09em; text-transform: uppercase; }
.courses-eyebrow::before { content: ''; flex: 0 0 23px; height: 2px; background: #b94f00; }
.courses-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 22px; }
.courses-button { display: inline-flex; justify-content: space-between; align-items: center; gap: 20px; min-height: 48px; padding: 13px 18px; border: 1px solid #254e76; border-radius: 6px; color: #fff; background: linear-gradient(135deg, #254e76, #142a40); font: 600 14px/1.5 'IBM Plex Sans', Arial, sans-serif; text-decoration: none; transition: background 200ms, color 200ms, border-color 200ms; }
.courses-button .nav-icon { width: 18px; height: 18px; }
.courses-button:is(:hover, :focus-visible), .courses-button--orange { border-color: #ff8a3d; background: #ff8a3d; color: #142a40; }
.courses-button--orange:is(:hover, :focus-visible) { background: #ffa366; border-color: #ffa366; }
.courses-button--outline { border-color: #8fb0c8; background: #ffffff05; }
.courses-breadcrumb { display: flex; align-items: center; gap: 10px; margin-bottom: 35px; color: #c7dceb; font-size: 12px; line-height: 1.6; }
.courses-breadcrumb a { padding-block: 8px; color: #e4f1f9; text-decoration: underline; text-decoration-color: #789bb6; text-underline-offset: 3px; transition: color 200ms; }
.courses-breadcrumb a:is(:hover, :focus-visible) { color: #ff8a3d; }
.courses-hero { position: relative; isolation: isolate; overflow: hidden; padding-block: 24px 65px; background: radial-gradient(ellipse at 85% 35%, #7dd3e81a, transparent 55%), linear-gradient(120deg, #142a40, #1c3b5a 55%, #254e76); color: #fff; }
.courses-hero > .header-container, .courses-next > .header-container { position: relative; z-index: 1; }
.courses-background-art { position: absolute; z-index: 0; inset: 0; overflow: hidden; color: #b9e8f3; opacity: .65; pointer-events: none; user-select: none; }
.courses-background-art__process { position: absolute; top: 48%; right: -12%; display: block; width: min(83%, 1200px); max-width: none; height: auto; opacity: .08; transform: translateY(-44%); }
.courses-background-art__equations { position: absolute; top: 47%; left: -5%; display: block; width: min(51%, 730px); max-width: none; height: auto; opacity: .065; transform: translateY(-46%); }
.courses-background-art--training .courses-background-art__process { top: 54%; right: -10%; width: min(89%, 1260px); opacity: .09; }
.courses-background-art--training .courses-background-art__equations { top: 48%; left: -4%; width: min(54%, 760px); opacity: .075; }
.courses-hero__layout { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); align-items: center; gap: 65px; }
.courses-hero h1 { margin: 0; color: #fff; font-size: clamp(40px, 4.2vw, 60px); font-weight: 500; letter-spacing: -.04em; line-height: 1.1; }
.courses-hero .courses-eyebrow, .courses-next .courses-eyebrow { color: #c9e0ed; }
.courses-hero .courses-eyebrow::before, .courses-next .courses-eyebrow::before { background: #ff8a3d; }
.courses-hero__intro { max-width: 620px; margin-top: 23px !important; color: #d4e5f0; font-size: 17px !important; }
.courses-hero .courses-actions { margin-top: 28px; }
.courses-hero__link { display: inline-flex; align-items: center; gap: 12px; min-height: 44px; color: #d6eaf5; font-size: 13px; line-height: 1.5; text-decoration: underline; text-underline-offset: 4px; text-decoration-color: #789bb6; transition: color 200ms; }
.courses-hero__link .nav-icon { width: 17px; height: 17px; }
.courses-hero__link:is(:hover, :focus-visible) { color: #ff8a3d; }
.courses-hero__facts { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 23px; margin: 27px 0 0; padding: 22px 0 0; border-top: 1px solid #7dd3e82b; list-style: none; }
.courses-hero__facts li { color: #c5dbea; font-size: 12px; line-height: 1.7; list-style: none; }
.courses-hero__facts strong { padding-right: 4px; color: #fff; font: 400 18px/1.5 'IBM Plex Mono', monospace; }
.courses-hero__visual { position: relative; padding: 23px; border: 1px solid #7dd3e84d; border-radius: 13px; background: linear-gradient(135deg, #7dd3e80d, #142a4033); box-shadow: 0 0 65px #7dd3e80a, inset 0 0 35px #7dd3e805; }
.courses-hero__visual::before { position: absolute; top: -1px; left: 26px; width: 40px; height: 3px; content: ''; background: #ff8a3d; }
.courses-hero__visual-label { display: block; color: #b9dbea; font: 400 10px/1.5 'IBM Plex Mono', monospace; letter-spacing: .04em; text-transform: uppercase; }
.courses-hero__art { display: block; width: 100%; height: auto; margin-block: 6px; }
.courses-hero__image { display: block; width: 100%; height: auto; margin-block: 18px; border-radius: 6px; object-fit: contain; }
.courses-hero__image-caption { margin: 0 0 15px !important; color: #c4dfed; font-size: 12px !important; line-height: 1.7 !important; }
.courses-hero__visual-note { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; color: #a7c6db; font-size: 11px; }
.courses-hero :is(a, button):focus-visible, .courses-next :is(a, button):focus-visible { outline-color: #fff; }

.courses-library { padding-block: 80px 90px; background: #f6f9fc; }
.courses-section-heading { margin-bottom: 40px; }
.courses-section-heading__title { display: flex; align-items: center; flex-wrap: wrap; gap: 18px; }
.courses-section-heading > p:not(.courses-eyebrow) { max-width: 790px; margin-top: 18px; color: #41576a; font-size: 16px; }
.courses-free-badge { padding: 7px 10px; border: 1px solid #aac9dc; border-radius: 4px; background: #e9f2f8; color: #254e76; font-size: 11px; font-weight: 500; line-height: 1.5; }
.courses-library__layout { display: grid; grid-template-columns: 255px minmax(0, 1fr); align-items: start; gap: 38px; }
.courses-sidebar { position: sticky; top: 155px; }
.courses-sidebar__label { margin-bottom: 17px !important; color: #41576a; font-size: 10px !important; font-weight: 500; letter-spacing: .09em; text-transform: uppercase; }
.courses-sidebar ol { display: grid; gap: 4px; margin: 0; padding: 0; list-style: none; }
.courses-sidebar li { list-style: none; }
.courses-sidebar li a { display: grid; grid-template-columns: 23px minmax(0, 1fr) 15px; align-items: start; gap: 11px; padding: 13px 10px; border: 1px solid transparent; border-radius: 5px; color: #254e76; font-size: 13px; line-height: 1.65; text-decoration: none; transition: background 200ms, border-color 200ms; }
.courses-sidebar li a > span:first-child { color: #6a8396; font: 400 11px/1.9 'IBM Plex Mono', monospace; }
.courses-sidebar li a .nav-icon { width: 15px; height: 15px; margin-top: 3px; }
.courses-sidebar li a:is(:hover, :focus-visible) { border-color: #c2d6e4; background: #eaf2f8; }
.courses-sidebar li a[aria-current='location'] { border-color: #254e76; background: linear-gradient(135deg, #254e76, #142a40); color: #fff; box-shadow: inset 3px 0 #ff8a3d; }
.courses-sidebar li a[aria-current='location'] > span:first-child { color: #b9e8f3; }
.courses-sidebar li a[aria-current='location'] > .nav-icon { color: #ff8a3d; }
.courses-sidebar__software { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; margin-top: 25px; padding: 24px 18px; border-top: 1px solid #cddde8; }
.courses-sidebar__software > .nav-icon { width: 28px; height: 28px; color: #254e76; }
.courses-sidebar__software p { max-width: 190px; color: #41576a; font-size: 13px; line-height: 1.7; }
.courses-sidebar__software strong { font-weight: 500; }
.courses-sidebar__software a { display: inline-flex; align-items: center; gap: 10px; color: #254e76; font-size: 12px; line-height: 1.65; text-decoration: underline; text-underline-offset: 4px; text-decoration-color: #9ab8ce; }
.courses-sidebar__software a .nav-icon { width: 15px; height: 15px; }
.courses-sidebar__software a:is(:hover, :focus-visible) { color: #b94f00; }
.courses-lessons { display: grid; min-width: 0; gap: 36px; }
.course-lesson { min-width: 0; padding: 30px; border: 1px solid #d1e0eb; border-radius: 11px; background: #fff; box-shadow: 0 6px 24px #142a4005; }
.course-lesson__number { display: block; margin-bottom: 10px; color: #5c7488; font: 400 11px/1.6 'IBM Plex Mono', monospace; letter-spacing: .05em; text-transform: uppercase; }
.course-lesson h3 { color: #142a40; font-size: clamp(23px, 2.2vw, 30px); }
.course-lesson__heading > p { margin-top: 13px; color: #41576a; font-size: 14px; }
.course-player { position: relative; overflow: hidden; width: 100%; margin-top: 25px; border: 1px solid #284e70; border-radius: 7px; background: #101f30; }
.course-player video { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: contain; background: #101f30; }
.course-player__cover { position: relative; aspect-ratio: 16 / 9; background: radial-gradient(ellipse at 70% 40%, #7dd3e80d, transparent 60%), linear-gradient(125deg, #142a40, #254e76); color: #fff; }
.course-player__topline { position: absolute; z-index: 1; top: 18px; right: 21px; left: 21px; display: flex; justify-content: space-between; gap: 10px; color: #c3ddec; font: 400 10px/1.5 'IBM Plex Mono', monospace; letter-spacing: .04em; text-transform: uppercase; }
.course-player__art { display: block; width: 100%; height: 100%; }
.course-player__poster { position: absolute; inset: 0; display: block; width: 100%; height: 100%; object-fit: cover; }
.course-player__cover:has(.course-player__poster:not([hidden]))::after { position: absolute; inset: 0; content: ''; background: linear-gradient(180deg, #142a4073, #142a400a 35%, #142a4026); pointer-events: none; }
.course-player__play { position: absolute; z-index: 2; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; padding-top: 6%; color: #fff; font-size: 12px; font-weight: 500; text-decoration: none; text-shadow: 0 1px 7px #142a40; }
.course-player__play::before { position: absolute; z-index: -1; inset: 0; content: ''; background: radial-gradient(ellipse at center, #142a4059, #142a4000 65%); }
.course-player__play-icon { display: grid; width: 65px; height: 65px; place-items: center; border: 1px solid #ffc29a; border-radius: 50%; background: #ff8a3d; color: #142a40; box-shadow: 0 0 0 9px #ff8a3d14, 0 8px 27px #101f3066; transition: transform 240ms, background 240ms, box-shadow 240ms; }
.course-player__play-icon svg { margin-left: 4px; }
.course-player__play:is(:hover, :focus-visible) .course-player__play-icon { transform: scale(1.06); background: #ffa366; box-shadow: 0 0 0 12px #ff8a3d1f, 0 8px 27px #101f3066; }
.course-player__play:focus-visible { outline: 3px solid #fff; outline-offset: -5px; }
.course-player__unavailable { position: absolute; inset: auto 0 22px; color: #d4e5f0; text-align: center; }
.course-lesson__status:not(.sr-only) { margin-top: 14px; padding: 12px 15px; border-left: 2px solid #b94f00; background: #fff5ed; color: #67422a; font-size: 13px; }
.course-lesson__resources { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; margin-top: 15px; }
.course-resource-button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 42px; padding: 10px 12px; border: 1px solid #cbdce8; border-radius: 5px; background: #f5f9fc; color: #254e76; font-size: 11px; font-weight: 500; line-height: 1.65; text-decoration: none; transition: background 200ms, border-color 200ms, box-shadow 200ms; }
.course-resource-button > :is(svg, .nav-icon) { flex: 0 0 16px; width: 16px; height: 16px; }
.course-resource-button:is(:hover, :focus-visible) { border-color: #6b91ae; background: #e8f2f9; box-shadow: 0 2px 7px #142a4008; }
.course-resource-button--exercise { border-color: #9cbacf; background: #eaf3f9; }
.course-chapters { margin-top: 19px; }
.course-chapters h4 { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; margin: 0 0 13px; color: #142a40; font-size: 14px; font-weight: 500; line-height: 1.6; }
.course-chapters h4 > span { color: #60788c; font-size: 10px; font-weight: 400; }
.course-chapters ol { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 3px 17px; margin: 0; padding: 0; list-style: none; }
.course-chapters li { min-width: 0; list-style: none; }
.course-chapters a { display: grid; grid-template-columns: 64px minmax(0, 1fr) 12px; align-items: start; gap: 9px; min-height: 43px; padding: 10px 9px; border-radius: 4px; color: #41576a; font-size: 12px; line-height: 1.7; text-decoration: none; transition: background 200ms, color 200ms; }
.course-chapters__time { color: #254e76; font: 400 10px/2 'IBM Plex Mono', monospace; white-space: nowrap; }
.course-chapters a > svg { width: 12px; height: 12px; margin-top: 4px; color: #577e9c; }
.course-chapters a:is(:hover, :focus-visible), .course-chapters a[aria-current='true'] { background: #eaf2f8; color: #142a40; }
.course-chapters a[aria-current='true'] { box-shadow: inset 2px 0 #ff8a3d; }

.courses-next { position: relative; isolation: isolate; overflow: hidden; padding-block: 75px 85px; background: radial-gradient(ellipse at 90% 5%, #7dd3e817, transparent 65%), linear-gradient(125deg, #142a40, #1c3b5a 55%, #254e76); color: #fff; }
.courses-next h2 { color: #fff; }
.courses-next .courses-section-heading > p:not(.courses-eyebrow) { color: #cfdfec; }
.courses-next__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 27px; }
.course-training { position: relative; display: flex; flex-direction: column; align-items: flex-start; padding: 32px; border: 1px solid #89b8d54d; border-radius: 9px; background: linear-gradient(140deg, #7dd3e80c, #142a4012); }
.course-training::before { position: absolute; top: -1px; left: 32px; width: 42px; height: 3px; content: ''; background: #ff8a3d; }
.course-training__icon { display: grid; width: 44px; height: 44px; place-items: center; margin-bottom: 25px; border: 1px solid #7dd3e84d; border-radius: 7px; background: #7dd3e80f; color: #d7f1fa; }
.course-training__icon .nav-icon { width: 25px; height: 25px; }
.course-training .course-training__label { margin-bottom: 10px; color: #b7d7e9; font: 400 10px/1.6 'IBM Plex Mono', monospace; letter-spacing: .04em; text-transform: uppercase; }
.course-training h3 { margin-bottom: 17px; color: #fff; font-size: 28px; }
.course-training > p:not(.course-training__label) { color: #d1e3ef; font-size: 14px; }
.course-training ul { display: grid; gap: 9px; margin: 21px 0 0; padding: 0 0 0 16px; color: #d1e3ef; font-size: 13px; line-height: 1.8; }
.course-training li::marker { color: #ff8a3d; }
.course-training .courses-button { margin-top: 28px; }

/* A single learning workspace reuses the lesson's original player and chapters. */
.course-exercise-dialog { position: fixed; inset: 0; width: min(1800px, calc(100% - 40px)); max-width: none; height: calc(100vh - 40px); height: calc(100dvh - 40px); max-height: none; margin: auto; padding: 0; overflow: hidden; overscroll-behavior: contain; border: 1px solid #8fc2de66; border-radius: 14px; background: radial-gradient(ellipse at 90% 5%, #7dd3e80c, transparent 60%), linear-gradient(130deg, #142a40, #1b3a58); box-shadow: 0 24px 100px #07142180; color: #fff; font: 400 14px/1.6 'IBM Plex Sans', Arial, sans-serif; }
.course-exercise-dialog:not([open]) { display: none; }
.course-exercise-dialog[open] { display: block; }
.course-exercise-dialog *, .course-exercise-dialog *::before, .course-exercise-dialog *::after { box-sizing: border-box; }
.course-exercise-dialog [hidden] { display: none !important; }
.course-exercise-dialog::backdrop { background: #071421d9; -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); }
.course-exercise-dialog :is(a, button, video):focus-visible { outline: 3px solid #fff; outline-offset: 4px; }
.course-exercise-dialog__shell { display: grid; grid-template-rows: auto minmax(0, 1fr); gap: 19px; height: 100%; min-width: 0; padding: 23px; }
.course-exercise-dialog__header { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; min-width: 0; }
.course-exercise-dialog__header > div { min-width: 0; }
.course-exercise-dialog__header h2 { margin: 0; color: #fff; font-size: clamp(19px, 1.9vw, 26px); font-weight: 500; line-height: 1.3; letter-spacing: -.02em; overflow-wrap: anywhere; }
.course-exercise-dialog__eyebrow { margin: 0 0 8px; color: #b4d3e5; font: 400 9px/1.6 'IBM Plex Mono', monospace; letter-spacing: .06em; text-transform: uppercase; }
#course-exercise-description { margin: 9px 0 0; color: #c0d6e5; font-size: 12px; line-height: 1.6; }
.course-exercise-dialog__close { display: grid; flex: 0 0 42px; width: 42px; height: 42px; place-items: center; padding: 0; border: 1px solid #9cc4dd66; border-radius: 50%; background: #7dd3e80c; color: #fff; cursor: pointer; transition: background 200ms, border-color 200ms; }
.course-exercise-dialog__close .nav-icon { width: 20px; height: 20px; }
.course-exercise-dialog__close:is(:hover, :focus-visible) { border-color: #ff8a3d; background: #ff8a3d; color: #142a40; }
.course-exercise-dialog__layout { display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.55fr); gap: 20px; min-width: 0; min-height: 0; }
.course-exercise-dialog__document { display: grid; grid-template-rows: auto minmax(0, 1fr) auto; min-width: 0; min-height: 0; overflow: hidden; border: 1px solid #83b1ce40; border-radius: 8px; background: #10263b; }
.course-exercise-dialog__document iframe { display: block; width: 100%; height: 100%; min-width: 0; min-height: 0; border: 0; background: #eaf0f5; }
.course-exercise-dialog__pane-heading { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 15px; min-height: 47px; padding: 10px 13px; }
.course-exercise-dialog__pane-heading h3 { margin: 0; color: #e7f3fa; font-size: 12px; font-weight: 500; line-height: 1.6; }
.course-exercise-dialog__pane-heading > div { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.course-exercise-dialog__pane-heading a { display: inline-flex; align-items: center; gap: 6px; min-height: 25px; color: #bbd7e8; font-size: 10px; line-height: 1.6; text-decoration: underline; text-decoration-color: #7395ad; text-underline-offset: 3px; }
.course-exercise-dialog__pane-heading a:hover { color: #ff8a3d; }
.course-exercise-dialog__pane-heading .nav-icon { width: 14px; height: 14px; }
.course-exercise-dialog__pdf-note { margin: 0; padding: 10px 13px; color: #afcada; font-size: 10px; line-height: 1.7; }
.course-exercise-dialog__video { display: grid; grid-template-rows: auto minmax(0, 1fr) auto auto auto; min-width: 0; min-height: 0; align-content: start; }
.course-exercise-dialog__video > .course-exercise-dialog__pane-heading { padding-inline: 0; }
.course-exercise-dialog__player { display: grid; min-width: 0; min-height: 0; overflow: hidden; border: 1px solid #83b1ce40; border-radius: 8px; background: #0b1d2d; }
.course-exercise-dialog .course-player { width: 100%; height: 100%; min-height: 0; margin: 0; border: 0; border-radius: 0; }
.course-exercise-dialog .course-player video { width: 100%; height: 100%; aspect-ratio: auto; object-fit: contain; }
.course-exercise-dialog .course-player__cover { width: 100%; height: 100%; aspect-ratio: auto; }
.course-exercise-dialog .course-player__play { padding-top: 0; }
.course-exercise-dialog__chapter-heading { display: flex; align-items: center; justify-content: space-between; gap: 15px; margin-block: 17px 11px; }
.course-exercise-dialog__chapter-heading > p { margin: 0; color: #cbe0ed; font-size: 12px; font-weight: 500; line-height: 1.5; }
.course-exercise-dialog__chapter-heading > div { display: flex; gap: 7px; }
.course-exercise-dialog__chapter-heading button { display: grid; width: 33px; height: 33px; place-items: center; padding: 0; border: 1px solid #91b8d15c; border-radius: 5px; background: #7dd3e80a; color: #d8ecf8; cursor: pointer; transition: background 200ms, border-color 200ms; }
.course-exercise-dialog__chapter-heading button .nav-icon { width: 17px; height: 17px; }
.course-exercise-dialog__chapter-heading button[data-exercise-chapters-prev] .nav-icon { transform: rotate(180deg); }
.course-exercise-dialog__chapter-heading button:is(:hover, :focus-visible):not(:disabled) { border-color: #ff8a3d; background: #ff8a3d; color: #142a40; }
.course-exercise-dialog__chapter-heading button:disabled { opacity: .35; cursor: default; }
.course-exercise-dialog__chapters { min-width: 0; }
.course-exercise-dialog .course-chapters { min-width: 0; margin: 0; }
.course-exercise-dialog .course-chapters h4 { display: none; }
.course-exercise-dialog .course-chapters ol { display: flex; flex-wrap: nowrap; align-items: stretch; gap: 9px; width: 100%; margin: 0; padding: 2px 2px 11px; overflow-x: auto; overscroll-behavior-x: contain; scroll-padding-inline: 2px; scrollbar-width: thin; scrollbar-color: #82b1cc #142a40; }
.course-exercise-dialog .course-chapters li { display: flex; flex: 0 0 clamp(175px, 15vw, 235px); min-width: 0; }
.course-exercise-dialog .course-chapters a { display: flex; flex-direction: column; align-items: flex-start; justify-content: flex-start; gap: 6px; width: 100%; min-height: 87px; padding: 12px 13px; border: 1px solid #7ca4c34d; border-radius: 6px; background: #ffffff05; color: #d3e5f0; font-size: 11px; line-height: 1.6; }
.course-exercise-dialog .course-chapters__time { color: #a4d7eb; font-size: 10px; line-height: 1.5; }
.course-exercise-dialog .course-chapters a > svg { display: none; }
.course-exercise-dialog .course-chapters a:is(:hover, :focus-visible) { border-color: #8cc3df; background: #7dd3e815; color: #fff; }
.course-exercise-dialog .course-chapters a[aria-current='true'] { border-color: #ff8a3d; background: linear-gradient(135deg, #315e86, #254e76); color: #fff; box-shadow: inset 0 3px #ff8a3d; }
.course-exercise-dialog .course-chapters a[aria-current='true'] .course-chapters__time { color: #ffd2b3; }
.course-exercise-dialog__status { margin: 11px 0 0; padding: 10px 12px; border-left: 2px solid #ff8a3d; background: #ffffff08; color: #f3d6c0; font-size: 12px; line-height: 1.6; }

@media (max-width: 1099px) {
  .courses-page [id] { scroll-margin-top: 130px; }
  .courses-hero__layout { gap: 35px; }
  .courses-library__layout { grid-template-columns: 210px minmax(0, 1fr); gap: 25px; }
  .courses-sidebar { top: 130px; }
  .course-lesson { padding: 23px; }
  .course-chapters ol { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 900px) {
  .courses-hero__layout { grid-template-columns: minmax(0, 1fr); gap: 34px; }
  .courses-hero__visual { max-width: 630px; width: 100%; }
  .courses-library__layout { grid-template-columns: minmax(0, 1fr); gap: 30px; }
  .courses-sidebar { position: static; }
  .courses-sidebar ol { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .courses-sidebar li a { height: 100%; border-color: #cddde8; background: #fff; }
  .courses-sidebar__software { flex-direction: row; flex-wrap: wrap; align-items: center; gap: 12px 20px; margin-top: 18px; padding: 18px 0 0; }
  .courses-sidebar__software p { max-width: none; }
  .course-chapters ol { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .course-exercise-dialog { width: calc(100% - 24px); height: calc(100vh - 24px); height: calc(100dvh - 24px); }
  .course-exercise-dialog__shell { padding: 18px; }
  .course-exercise-dialog__layout { gap: 15px; }
}
@media (max-width: 640px) {
  .courses-hero { padding-block: 18px 43px; }
  .courses-breadcrumb { margin-bottom: 25px; }
  .courses-hero h1 { font-size: clamp(35px, 8vw, 45px); }
  .courses-hero__intro { margin-top: 20px !important; font-size: 16px !important; }
  .courses-hero__layout { gap: 30px; }
  .courses-hero__visual { padding: 17px; }
  .courses-hero__visual-label { font-size: 9px; }
  .courses-hero__visual-note { font-size: 10px; }
  .courses-background-art__process, .courses-background-art--training .courses-background-art__process { top: auto; right: -44%; bottom: -25px; width: 155%; transform: none; opacity: .075; }
  .courses-background-art__equations, .courses-background-art--training .courses-background-art__equations { top: 12px; left: -18%; width: 125%; transform: none; opacity: .055; }
  .courses-hero__facts { gap: 7px 18px; }
  .courses-actions { gap: 12px; }
  .courses-library { padding-block: 50px 55px; }
  .courses-section-heading { margin-bottom: 28px; }
  .courses-section-heading__title { gap: 14px; }
  .courses-sidebar ol { grid-template-columns: minmax(0, 1fr); }
  .courses-sidebar li a { padding: 11px 12px; }
  .courses-sidebar__software > .nav-icon { display: none; }
  .courses-sidebar__software p { flex: 0 0 100%; }
  .course-lesson { padding: 20px 16px 12px; border-radius: 8px; }
  .courses-lessons { gap: 25px; }
  .course-lesson h3 { font-size: 24px; }
  .course-player { margin-top: 19px; }
  .course-player__topline { top: 11px; right: 13px; left: 13px; font-size: 8px; }
  .course-player__play { gap: 9px; font-size: 11px; }
  .course-player__play-icon { width: 49px; height: 49px; box-shadow: 0 0 0 6px #ff8a3d14, 0 8px 27px #101f3066; }
  .course-player__play-icon svg { width: 19px; height: 19px; }
  .course-chapters ol { grid-template-columns: minmax(0, 1fr); }
  .course-chapters a { min-height: 44px; padding-inline: 7px; }
  .course-lesson__resources { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .course-resource-button { justify-content: flex-start; min-height: 46px; padding: 9px; font-size: 10px; }
  .course-resource-button > :is(svg, .nav-icon) { flex-basis: 14px; width: 14px; height: 14px; }
  .course-exercise-dialog { width: 100%; height: 100vh; height: 100dvh; margin: 0; border: 0; border-radius: 0; }
  .course-exercise-dialog__shell { gap: 15px; padding: max(15px, env(safe-area-inset-top)) max(14px, env(safe-area-inset-right)) max(15px, env(safe-area-inset-bottom)) max(14px, env(safe-area-inset-left)); }
  .course-exercise-dialog__header { gap: 14px; }
  .course-exercise-dialog__header h2 { font-size: 18px; }
  .course-exercise-dialog__eyebrow { font-size: 8px; }
  #course-exercise-description { font-size: 11px; }
  .course-exercise-dialog__close { flex-basis: 38px; width: 38px; height: 38px; }
  .course-exercise-dialog__layout { display: flex; flex-direction: column; gap: 22px; min-height: 0; overflow-y: auto; overscroll-behavior-y: contain; padding: 0 2px 8px; }
  .course-exercise-dialog__video { order: -1; flex: 0 0 auto; }
  .course-exercise-dialog__player { height: auto; aspect-ratio: 16 / 9; }
  .course-exercise-dialog__document { flex: 0 0 70vh; min-height: 430px; }
  .course-exercise-dialog .course-chapters li { flex-basis: 185px; }
  .course-exercise-dialog .course-chapters a { min-height: 90px; }
  .course-exercise-dialog__chapter-heading { margin-top: 13px; }
  .courses-next { padding-block: 50px 55px; }
  .courses-next__grid { grid-template-columns: minmax(0, 1fr); gap: 23px; }
  .course-training { padding: 26px 23px; }
  .course-training h3 { font-size: 26px; }
}
@media (min-width: 641px) and (max-height: 600px) {
  .course-exercise-dialog__layout { align-items: start; overflow-y: auto; padding-right: 4px; }
  .course-exercise-dialog__document, .course-exercise-dialog__video { height: 480px; min-height: 480px; }
}
@media (prefers-reduced-motion: reduce) {
  html:has(.courses-page), .courses-page * { scroll-behavior: auto !important; }
  .courses-page *, .courses-page *::before, .courses-page *::after { transition: none !important; animation: none !important; }
  .course-exercise-dialog *, .course-exercise-dialog *::before, .course-exercise-dialog *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}
@media print {
  .courses-hero, .courses-library, .courses-next { padding-block: 24px; background: #fff; }
  .courses-page :is(h1, h2, h3, h4, p, a, li, span) { color: #142a40 !important; }
  .courses-hero__visual, .courses-actions, .courses-sidebar, .course-player, .course-training .courses-button, .course-exercise-dialog, .courses-background-art { display: none !important; }
  .courses-library__layout, .courses-next__grid { display: block; }
  .course-lesson, .course-training { margin-bottom: 20px; border-color: #cddde8; background: #fff; box-shadow: none; }
}