.catalog-page { background: #f7f8fc; }
.catalog-nav { display: flex; align-items: center; gap: 28px; font-size: 13px; font-weight: 700; }
.catalog-nav .active { color: #f1543b; }
.catalog-hero { padding: 160px 0 75px; overflow: hidden; background: radial-gradient(circle at 78% 50%, #e4e9ff 0 19%, transparent 43%), #f7f8fc; }
.catalog-hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 70px; }
.catalog-hero h1 { margin: 0; color: #202064; font: 900 clamp(62px,7vw,94px)/.9 "Barlow Condensed"; text-transform: uppercase; }
.catalog-hero h1 span { color: #f1543b; }
.catalog-hero p:last-child { max-width: 610px; color: #65657a; font-size: 16px; }
.catalog-visual { position: relative; min-height: 300px; display: grid; place-items: center; }
.app-stack { display: flex; gap: 18px; transform: rotate(-4deg); }
.app-stack span, .paid-icon { width: 92px; height: 92px; display: grid; place-items: center; color: #fff; border: 9px solid #fff; border-radius: 24px; box-shadow: 0 24px 45px rgba(32,32,100,.18); font-size: 40px; font-weight: 800; }
.word-tile { background: #2867c9; }.excel-tile { background: #13844d; }.ppt-tile { background: #dd5a32; }
.route-line { position: absolute; left: 8%; right: 4%; bottom: 20px; display: flex; align-items: center; justify-content: space-between; height: 7px; background: #202064; border-radius: 9px; }
.route-line i { width: 19px; height: 19px; border: 5px solid #202064; background: #fff; border-radius: 50%; }
.route-line b { padding: 7px 12px; background: #f1543b; color: #fff; border-radius: 8px; font-size: 11px; transform: rotate(4deg); }
.catalog-heading { display: flex; align-items: end; justify-content: space-between; gap: 40px; margin-bottom: 42px; }
.catalog-heading h2 { margin: 0; color: #202064; font: 900 clamp(48px,5vw,70px)/.95 "Barlow Condensed"; text-transform: uppercase; }
.catalog-heading h2 span { color: #f1543b; }
.catalog-heading > p { max-width: 450px; margin: 0; color: #65657a; font-size: 13px; }
.catalog-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.catalog-card { overflow: hidden; background: #fff; border: 1px solid #e3e5ef; border-radius: 25px; box-shadow: 0 12px 30px rgba(32,32,100,.08); transition: transform .25s ease, box-shadow .25s ease; }
.catalog-card:hover { transform: translateY(-7px); box-shadow: 0 24px 60px rgba(24,24,73,.16); }
.catalog-cover { position: relative; height: 225px; display: grid; place-items: center; overflow: hidden; }
.catalog-cover > span { z-index: 2; width: 72px; height: 72px; display: grid; place-items: center; color: #fff; border: 7px solid #fff; border-radius: 18px; font-size: 33px; font-weight: 800; box-shadow: 0 15px 25px rgba(32,32,100,.15); }
.catalog-cover > b { position: absolute; right: 17px; top: 17px; padding: 6px 10px; background: #fff; color: #16864a; border-radius: 8px; font-size: 9px; letter-spacing: .12em; }
.word-catalog { background: #e4ecff; }.word-catalog > span { background: #2867c9; }
.excel-catalog { background: #dff4e9; }.excel-catalog > span { background: #13844d; }
.ppt-catalog { background: #fff0eb; }.ppt-catalog > span { background: #dd5a32; }
.sheet-lines { position: absolute; width: 210px; height: 130px; background: #fff; border-radius: 10px; transform: translate(40px,26px) rotate(-5deg); }
.sheet-lines i { display: block; width: 135px; height: 9px; margin: 20px 0 0 52px; background: #c6d4f5; border-radius: 5px; }
.grid-sheet { position: absolute; width: 215px; height: 130px; background: repeating-linear-gradient(0deg,transparent 0 30px,#b9e5cd 30px 35px), repeating-linear-gradient(90deg,#fff 0 45px,#b9e5cd 45px 50px); border-radius: 10px; transform: translate(42px,27px) rotate(4deg); }
.slide-shape { position: absolute; width: 215px; height: 130px; background: #fff; border-radius: 10px; transform: translate(40px,27px) rotate(-3deg); }
.slide-shape i:first-child { position: absolute; width: 54px; height: 54px; left: 55px; top: 40px; background: #f4b9aa; border-radius: 50%; }.slide-shape i:last-child { position: absolute; width: 62px; height: 12px; right: 25px; top: 57px; background: #efc1b6; border-radius: 8px; }
.catalog-body { padding: 23px; }
.catalog-meta { display: flex; align-items: center; justify-content: space-between; }.catalog-meta span { color: #f1543b; font-size: 10px; font-weight: 800; text-transform: uppercase; letter-spacing: .1em; }.catalog-meta small { color: #16864a; font-size: 10px; font-weight: 800; }
.catalog-body h3 { margin: 10px 0; color: #202064; font-size: 21px; }.catalog-body p { min-height: 66px; margin: 0; color: #65657a; font-size: 12px; }
.catalog-body ul { display: flex; flex-wrap: wrap; gap: 7px; margin: 17px 0 22px; padding: 0; list-style: none; }.catalog-body li { padding: 5px 8px; background: #f0f2f8; border-radius: 6px; color: #66667b; font-size: 9px; }
.course-action { width: 100%; }
.paid-courses { background: #fff; }
.paid-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 18px; }
.paid-card { position: relative; padding: 27px; display: grid; grid-template-columns: 70px 1fr; column-gap: 21px; background: #f7f8fc; border: 1px solid #e3e5ef; border-radius: 22px; }
.paid-icon { grid-row: 1/5; width: 70px; height: 70px; border-width: 5px; border-radius: 17px; font-size: 28px; }
.paid-card > span { color: #f1543b; font-size: 9px; font-weight: 800; letter-spacing: .12em; }.paid-card h3 { margin: 4px 0; color: #202064; font-size: 19px; }.paid-card p { margin: 0 0 15px; color: #65657a; font-size: 11px; }.paid-card > div:last-child { display: flex; align-items: center; justify-content: space-between; border-top: 1px solid #e3e5ef; padding-top: 13px; }.paid-card strong { color: #202064; font-size: 11px; }.paid-card a { color: #f1543b; font-size: 11px; font-weight: 800; }
.combo-paid .paid-icon { background: #202064; font-size: 18px; }
.mini-footer { padding: 25px 0; background: #10102d; color: #c4c4d4; }.mini-footer .container { display: flex; align-items: center; justify-content: space-between; gap: 20px; }.mini-footer p,.mini-footer > div > a:last-child { font-size: 11px; }.mini-footer > div > a:last-child { color: #ff9b88; font-weight: 700; }

.lesson-page { background: #f3f4f8; }
.lesson-header { position: sticky; top: 0; z-index: 20; min-height: 72px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 20px; padding: 7px 28px; background: #fff; border-bottom: 1px solid #e3e5ef; }
.lesson-header .brand img { width: 54px; height: 54px; }
.lesson-course-name { display: flex; align-items: center; gap: 11px; }.lesson-course-name > span { width: 42px; height: 42px; display: grid; place-items: center; background: #13844d; color: #fff; border-radius: 10px; font-weight: 800; }.lesson-course-name div { display: flex; flex-direction: column; }.lesson-course-name small { color: #f1543b; font-size: 8px; font-weight: 800; letter-spacing: .11em; }.lesson-course-name strong { color: #202064; font-size: 13px; }
.back-catalog { justify-self: end; color: #202064; font-size: 12px; font-weight: 700; }
.lesson-main { width: min(1440px,calc(100% - 40px)); margin: 0 auto; padding: 24px 0 70px; }
.lesson-breadcrumb { display: flex; gap: 8px; align-items: center; margin-bottom: 17px; color: #7b7b8d; font-size: 10px; }.lesson-breadcrumb strong { color: #202064; }
.lesson-layout { display: grid; grid-template-columns: minmax(0,1.55fr) minmax(330px,.72fr); gap: 20px; align-items: start; }
.lesson-video { position: relative; aspect-ratio: 16/9; overflow: hidden; background: #10102d; border-radius: 18px; box-shadow: 0 18px 45px rgba(24,24,73,.17); }.lesson-video iframe { width: 100%; height: 100%; border: 0; }
#videoMount { width: 100%; height: 100%; }
.video-poster { position: relative; width: 100%; height: 100%; display: grid; place-items: center; overflow: hidden; border: 0; background: radial-gradient(circle at 72% 30%,#363675 0 10%,transparent 34%),#10102d; color: #fff; }
.video-poster::before { content: ""; position: absolute; width: 54%; aspect-ratio: 1; right: -12%; bottom: -58%; border: 70px solid rgba(255,255,255,.035); border-radius: 50%; }
.poster-sheet { position: absolute; left: 10%; top: 18%; width: 38%; aspect-ratio: 1.45; background: repeating-linear-gradient(0deg,transparent 0 24%,rgba(185,229,205,.55) 24% 28%),repeating-linear-gradient(90deg,#fff 0 28%,#b9e5cd 28% 31%); border-radius: 10px; transform: rotate(-5deg); box-shadow: 0 20px 35px rgba(0,0,0,.22); opacity: .9; }
.poster-content { position: relative; z-index: 2; display: flex; align-items: center; flex-direction: column; transform: translateX(17%); }
.poster-play { width: 76px; height: 76px; display: grid; place-items: center; margin-bottom: 15px; background: #f1543b; border: 8px solid rgba(255,255,255,.92); border-radius: 50%; box-shadow: 0 15px 35px rgba(241,84,59,.3); font-size: 24px; transition: transform .2s ease,background .2s ease; }
.video-poster:hover .poster-play { transform: scale(1.08); background: #ef0826; }
.poster-content strong { font-size: 15px; }.poster-content small { color: #c7c7dc; font-size: 9px; margin-top: 4px; }
.youtube-fallback { position: absolute; z-index: 3; right: 14px; bottom: 12px; padding: 7px 10px; background: rgba(255,255,255,.1); color: #fff; border-radius: 7px; font-size: 8px; font-weight: 700; }
.video-unavailable { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; flex-direction: column; padding: 30px; text-align: center; background: radial-gradient(circle at 50% 40%,#292963,#10102d 70%); color: #fff; }.video-unavailable[hidden] { display: none; }.video-unavailable > span { width: 72px; height: 72px; display: grid; place-items: center; margin-bottom: 16px; background: #2867c9; border: 7px solid #fff; border-radius: 18px; font-size: 30px; font-weight: 800; }.video-unavailable h2 { margin: 0; }.video-unavailable p { max-width: 520px; color: #c7c7dc; font-size: 12px; }.video-unavailable a { color: #ff9b88; font-size: 12px; font-weight: 800; }
.lesson-title-row { display: flex; align-items: start; justify-content: space-between; gap: 25px; padding: 24px 4px; }.lesson-label { margin: 0 0 4px; color: #f1543b; font-size: 9px; font-weight: 800; letter-spacing: .12em; }.lesson-title-row h1 { margin: 0; color: #202064; font-size: clamp(23px,2.2vw,34px); line-height: 1.25; }.free-label { flex: 0 0 auto; padding: 7px 10px; background: #e3f6eb; color: #16864a; border-radius: 8px; font-size: 9px; font-weight: 800; }
.analysis-panel { position: sticky; top: 94px; overflow: hidden; background: #fff; border: 1px solid #e3e5ef; border-radius: 18px; box-shadow: 0 12px 30px rgba(32,32,100,.08); }
.analysis-head { display: flex; justify-content: space-between; padding: 18px 20px; background: #202064; color: #fff; }.analysis-head span { font-size: 11px; font-weight: 800; letter-spacing: .1em; }.analysis-head small { color: #bfbfd5; font-size: 8px; }
.analysis-head small i { display: inline-block; width: 7px; height: 7px; margin-right: 4px; background: #54d98c; border-radius: 50%; box-shadow: 0 0 0 4px rgba(84,217,140,.14); }
.analysis-content { padding: 4px 20px; }.analysis-content section { display: grid; grid-template-columns: 38px 1fr; gap: 12px; padding: 17px 0; border-bottom: 1px solid #ececf2; }.analysis-content section:last-child { border: 0; }.analysis-icon { width: 34px; height: 34px; display: grid; place-items: center; background: #e8edff; color: #202064; border-radius: 10px; font-weight: 800; }.steps-icon { background: #e3f6eb; color: #16864a; }.warning-icon { background: #fff0eb; color: #f1543b; }.tip-icon { background: #fff7dc; color: #b57c00; }
.analysis-content h2 { margin: 0 0 5px; color: #202064; font-size: 13px; }.analysis-content p,.analysis-content ol { margin: 0; padding-left: 0; color: #65657a; font-size: 10px; line-height: 1.65; }.analysis-content ol { padding-left: 17px; }.analysis-content li { margin-bottom: 4px; }
.analysis-note { display: flex; gap: 10px; margin: 0 16px 16px; padding: 12px; background: #f2f3f8; border-radius: 10px; }.analysis-note span { flex: 0 0 20px; height: 20px; display: grid; place-items: center; background: #202064; color: #fff; border-radius: 50%; font-size: 10px; }.analysis-note p { margin: 0; color: #65657a; font-size: 9px; }
.lesson-list-block { margin-top: 12px; overflow: hidden; background: #fff; border: 1px solid #e3e5ef; border-radius: 17px; }.list-heading { display: flex; align-items: center; justify-content: space-between; padding: 16px 18px; border-bottom: 1px solid #e3e5ef; }.list-heading h2 { margin: 0; color: #202064; font-size: 15px; }.list-heading span { color: #7b7b8d; font-size: 9px; }
.lesson-item { width: 100%; min-height: 62px; display: grid; grid-template-columns: 34px 1fr auto; align-items: center; gap: 12px; padding: 10px 17px; text-align: left; border: 0; border-bottom: 1px solid #ececf2; background: #fff; }.lesson-item:last-child { border-bottom: 0; }.lesson-item:hover,.lesson-item.active { background: #f0f2ff; }.lesson-item > span { width: 31px; height: 31px; display: grid; place-items: center; background: #eef0f5; color: #202064; border-radius: 50%; font-size: 10px; }.lesson-item.active > span { background: #f1543b; color: #fff; }.lesson-item div { display: flex; flex-direction: column; }.lesson-item strong { color: #202064; font-size: 11px; }.lesson-item small { color: #858596; font-size: 8px; }.lesson-item > em { color: #16864a; font-size: 8px; font-style: normal; font-weight: 800; }
.lesson-mobile-analysis { display: none; }
.sync-status { padding: 15px 0 11px; border-bottom: 1px solid #ececf2; }
.sync-status > div:first-child { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.sync-status span { color: #f1543b; font-size: 9px; font-weight: 800; letter-spacing: .11em; }
.sync-status strong { color: #202064; font-size: 10px; }
.sync-progress { height: 5px; overflow: hidden; background: #e9eaf0; border-radius: 6px; }
.sync-progress i { display: block; width: 0; height: 100%; background: linear-gradient(90deg,#f1543b,#ef0826); border-radius: inherit; transition: width .45s linear; }
.task-tabs { display: grid; grid-template-columns: repeat(4,1fr); gap: 5px; padding: 11px 0; border-bottom: 1px solid #ececf2; }
.task-tabs button { min-width: 0; min-height: 48px; padding: 6px 3px; overflow: hidden; border: 1px solid transparent; border-radius: 9px; background: #f4f5f8; color: #77778a; text-overflow: ellipsis; white-space: nowrap; font-size: 7px; font-weight: 700; transition: .2s ease; }
.task-tabs button span { width: 19px; height: 19px; display: grid; place-items: center; margin: 0 auto 3px; background: #e2e3e9; color: #68687b; border-radius: 50%; font-size: 8px; }
.task-tabs button:hover,.task-tabs button.active { border-color: #f1543b; background: #fff0ed; color: #202064; }
.task-tabs button.active span { background: #f1543b; color: #fff; }
.live-task { padding: 15px 0 5px; animation: taskIn .25s ease-out; }
.live-task > header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.live-task > header small { color: #888899; font-size: 8px; }
.live-badge { padding: 5px 8px; background: #e3f6eb; color: #16864a; border-radius: 7px; font-size: 8px; font-weight: 800; letter-spacing: .08em; }
.live-badge i { display: inline-block; width: 6px; height: 6px; margin-right: 4px; background: #19a15b; border-radius: 50%; animation: livePulse 1.4s ease-out infinite; }
.task-title-row { display: grid; grid-template-columns: 45px 1fr; gap: 12px; align-items: center; }
.task-feature-icon { width: 45px; height: 45px; display: grid; place-items: center; background: #eef1ff; color: #202064; border-radius: 12px; }
.task-feature-icon svg { width: 23px; height: 23px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.task-title-row p { margin: 0 0 2px; color: #f1543b; font-size: 7px; font-weight: 800; letter-spacing: .1em; }
.task-title-row h2 { margin: 0; color: #202064; font-size: 16px; line-height: 1.25; }
.task-mission { margin: 13px 0; color: #55556a; font-size: 10px; font-weight: 500; }
.ribbon-path { display: flex; align-items: stretch; gap: 4px; margin: 10px 0 13px; overflow-x: auto; scrollbar-width: thin; }
.ribbon-path > span { min-width: max-content; display: flex; align-items: center; gap: 5px; padding: 7px 8px; background: #f1f2f6; color: #49495e; border: 1px solid #e5e6ec; border-radius: 8px; font-size: 8px; font-weight: 700; }
.ribbon-path > span.feature { background: #fff0ed; color: #d63f29; border-color: #ffc7bd; }
.ribbon-path > span i { width: 16px; height: 16px; display: grid; place-items: center; background: #fff; color: #202064; border-radius: 5px; font-size: 7px; font-style: normal; }
.ribbon-path > b { align-self: center; color: #a4a4b1; font-size: 14px; }
.task-explain { display: flex; gap: 9px; padding: 11px; background: #f6f7fa; border-left: 3px solid #202064; border-radius: 0 9px 9px 0; }
.task-explain span { flex: 0 0 20px; height: 20px; display: grid; place-items: center; background: #202064; color: #fff; border-radius: 50%; font-size: 9px; }
.task-explain p { margin: 0; color: #5f5f72; font-size: 9px; line-height: 1.65; }
.timeline-note { margin: 8px 0 14px; padding: 8px; color: #8b8b99; background: #fff8df; border-radius: 7px; font-size: 7px; line-height: 1.5; }
.video-loading { position: absolute; inset: 0; z-index: 1; display: flex; align-items: center; justify-content: center; gap: 10px; color: #fff; background: #10102d; font-size: 11px; }
.video-loading i { width: 22px; height: 22px; border: 3px solid rgba(255,255,255,.2); border-top-color: #f1543b; border-radius: 50%; animation: spin .8s linear infinite; }
#ytPlayer { position: relative; z-index: 2; width: 100%; height: 100%; }
@keyframes taskIn { from { opacity: 0; transform: translateY(7px); } to { opacity: 1; transform: none; } }
@keyframes livePulse { 0% { box-shadow: 0 0 0 0 rgba(25,161,91,.45); } 70% { box-shadow: 0 0 0 7px rgba(25,161,91,0); } 100% { box-shadow: 0 0 0 0 rgba(25,161,91,0); } }
@keyframes spin { to { transform: rotate(360deg); } }

@media(max-width:900px) {
  .catalog-hero-grid { grid-template-columns: 1fr; }.catalog-visual { min-height: 250px; }.catalog-grid { grid-template-columns: 1fr 1fr; }.catalog-grid article:last-child { grid-column: 1/-1; max-width: calc(50% - 11px); }.paid-grid { grid-template-columns: 1fr; }
  .lesson-header { grid-template-columns: 1fr auto; }.lesson-course-name { display: none; }.lesson-layout { grid-template-columns: 1fr; }.analysis-panel { position: static; }.lesson-main { width: min(100% - 24px,760px); }
}
@media(max-width:600px) {
  .catalog-nav > a:not(.button) { display: none; }.catalog-hero { padding-top: 125px; }.catalog-hero h1 { font-size: 58px; }.catalog-heading { align-items: flex-start; flex-direction: column; }.catalog-grid { grid-template-columns: 1fr; }.catalog-grid article:last-child { grid-column: auto; max-width: none; }.paid-card { grid-template-columns: 55px 1fr; padding: 19px; }.paid-icon { width: 55px; height: 55px; font-size: 22px; }.paid-card > div:last-child { align-items: flex-start; flex-direction: column; gap: 8px; }.mini-footer .container { align-items: flex-start; flex-direction: column; }
  .lesson-header { padding: 7px 12px; }.lesson-header .brand span { display: none; }.back-catalog { font-size: 10px; }.lesson-main { width: 100%; padding-top: 10px; }.lesson-breadcrumb { padding: 0 12px; }.lesson-video { border-radius: 0; }.lesson-title-row { padding: 20px 14px; flex-direction: column; gap: 11px; }.analysis-panel { margin: 0 12px; }.lesson-list-block { margin: 13px 12px 0; }.analysis-head { align-items: flex-start; flex-direction: column; gap: 3px; }.poster-play { width: 58px; height: 58px; border-width: 6px; }.poster-content strong { font-size: 11px; }.youtube-fallback { display: none; }
}