/* ONLINE BATCHES -- website pages (ob_batch, ob_enrol, ob_badge, cards on /online-classes). Er Dk 2026-10-23. Pairs with online-site.css. */
.obs-stars { color: #d9d6cf; letter-spacing: 1px; font-size: 15px; white-space: nowrap; }
.obs-stars i { font-style: normal; } .obs-stars i.on { color: #f5a300; }
.obs-stars i.half { background: linear-gradient(90deg, #f5a300 50%, #d9d6cf 50%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.obs-rate { display: inline-flex; align-items: center; gap: 6px; font-size: 13.5px; color: #444; text-decoration: none; margin: 2px 0 6px; }
.obs-rate.big { font-size: 15px; margin: 4px 0 12px; } .obs-rate.big .obs-stars { font-size: 19px; }
.obs-rate span { color: #777; }
.obs-fee b { font-size: inherit; } .obs-fee s { color: #8a8a93; font-weight: 400; font-size: .7em; margin-left: 4px; }
.obs-fee em { font-style: normal; font-size: .55em; font-weight: 700; color: #1f7a3a; background: #e6f5ea; padding: 2px 7px; border-radius: 99px; margin-left: 6px; vertical-align: middle; }
.obs-fee small { display: block; }
.obs-early { color: #b45309 !important; font-weight: 600; }
.obs-late { color: #1d4e89; }
.btn.disabled { opacity: .55; pointer-events: none; }
.obs-done { background: #fff7e6; border: 1px solid #f3cf87; color: #6b4200; border-radius: 12px; padding: 12px 16px; margin: 0 0 16px; }
.obs-local { color: #6b6b75; font-weight: 400; font-size: .86em; }

/* roadmap */
.obs-road { list-style: none; margin: 8px 0 0; padding: 0; position: relative; }
.obs-road::before { content: ""; position: absolute; left: 19px; top: 8px; bottom: 8px; width: 3px; background: linear-gradient(#B3121F, #10233f); border-radius: 3px; }
.obs-step { display: grid; grid-template-columns: 42px 1fr; gap: 14px; padding: 0 0 22px; position: relative; }
.obs-dot { width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; background: #fff; border: 3px solid #B3121F; color: #B3121F; font: 700 16px 'Space Grotesk', sans-serif; z-index: 1; }
.obs-step.cert .obs-dot { background: #10233f; border-color: #10233f; color: #fff; }
.obs-step b { font-size: 16.5px; display: block; margin-top: 8px; } .obs-step p { margin: 4px 0 0; color: #4b4b55; line-height: 1.55; }
.obs-road-secs { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.obs-road-secs span { font-size: 12.5px; background: #eef2f8; color: #1d3b66; padding: 3px 10px; border-radius: 99px; }
.obs-awards { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 12px; align-items: flex-start; }
.obs-awards figure { margin: 0; display: grid; gap: 6px; font-size: 12.5px; color: #555; }
.obs-cert { flex: 1 1 300px; max-width: 420px; } .obs-cert img { width: 100%; height: auto; border-radius: 8px; box-shadow: 0 8px 26px rgba(16, 35, 63, .18); border: 1px solid #e5e5e5; }
.obs-badge { width: 150px; text-align: center; } .obs-badge img { width: 150px; height: 150px; }

.obs-pre { white-space: pre-line; }
.obs-lists { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-top: 10px; }
.obs-lists h3 { font-size: 15.5px; margin: 0 0 8px; }
.obs-ul { margin: 0; padding-left: 18px; display: grid; gap: 5px; color: #444; }
.obs-demos { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 14px; }
.obs-yt { all: unset; cursor: pointer; display: grid; gap: 6px; position: relative; }
.obs-yt img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 10px; }
.obs-yt b { font-size: 14px; color: #1b1b1f; }
.obs-play { position: absolute; top: calc(50% - 30px); left: calc(50% - 26px); width: 52px; height: 38px; border-radius: 10px; background: rgba(179, 18, 31, .92); color: #fff; display: grid; place-items: center; font-size: 17px; }
.obs-yt:focus-visible { outline: 3px solid #B3121F; outline-offset: 3px; border-radius: 10px; }
.obs-yt.on { aspect-ratio: 16 / 9; } .obs-yt.on iframe { width: 100%; height: 100%; border: 0; border-radius: 10px; }
.obs-sec { font-size: 15px; text-transform: uppercase; letter-spacing: .06em; color: #B3121F; margin: 18px 0 8px; }
.obs-ch { border: 1px solid #e7e5df; border-radius: 10px; margin-bottom: 8px; background: #fff; }
.obs-ch summary { cursor: pointer; padding: 11px 14px; display: flex; gap: 10px; align-items: center; font-weight: 600; list-style: none; }
.obs-ch summary::-webkit-details-marker { display: none; }
.obs-ch summary::after { content: "+"; margin-left: 8px; color: #999; font-weight: 400; } .obs-ch[open] summary::after { content: "–"; }
.obs-ch summary small { margin-left: auto; color: #888; font-weight: 400; }
.obs-ch ul { margin: 0; padding: 0 14px 12px 50px; display: grid; gap: 5px; color: #444; font-size: 14px; }
.obs-no { display: inline-grid; place-items: center; min-width: 26px; height: 26px; border-radius: 7px; background: #f3f1eb; font-size: 12.5px; }
.obs-free { font-size: 11px; font-weight: 700; color: #B3121F; background: #fdecee; padding: 1px 7px; border-radius: 99px; }
.obs-demo-l { color: #B3121F; font-weight: 600; text-decoration: none; }
.obs-extras { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; }
.obs-extras li { display: flex; gap: 10px; align-items: flex-start; background: #fff; border: 1px solid #ebe9e3; border-radius: 12px; padding: 12px; }
.obs-extras li > span { font-size: 22px; line-height: 1; } .obs-extras b { display: block; font-size: 14.5px; } .obs-extras small { color: #666; }
.obs-next { margin: 6px 0 0; padding-left: 18px; display: grid; gap: 5px; }
.obs-rsum { display: grid; grid-template-columns: 200px 1fr; gap: 20px; align-items: center; margin-bottom: 16px; }
@media (max-width: 640px) { .obs-rsum { grid-template-columns: 1fr; } }
.obs-rbig { display: grid; justify-items: start; gap: 2px; } .obs-rbig b { font: 700 44px/1 'Space Grotesk', sans-serif; } .obs-rbig .obs-stars { font-size: 20px; } .obs-rbig span { color: #666; font-size: 13px; }
.obs-dist div { display: grid; grid-template-columns: 40px 1fr 34px; gap: 8px; align-items: center; font-size: 13px; color: #555; }
.obs-dist i { height: 8px; background: #eeece6; border-radius: 99px; overflow: hidden; } .obs-dist em { display: block; height: 100%; background: #f5a300; }
.obs-reviews { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 12px; }
.obs-reviews article { background: #fff; border: 1px solid #ebe9e3; border-radius: 12px; padding: 14px; }
.obs-reviews p { margin: 8px 0; color: #333; line-height: 1.5; } .obs-reviews small { color: #777; }

/* enrol */
.obs-enrol { padding: 34px 0 60px; background: #f6f5f2; }
.obs-enrol h1 { margin: 6px 0 16px; }
.obs-enrol-grid { display: grid; grid-template-columns: 1fr 380px; gap: 28px; align-items: start; }
@media (max-width: 900px) { .obs-enrol-grid { grid-template-columns: 1fr; } }
.obs-form { display: grid; gap: 14px; background: #fff; border-radius: 16px; padding: 22px; border: 1px solid #e7e5df; }
.obs-form label { display: grid; gap: 5px; font-size: 14px; }
.obs-form label > span:first-child { font-weight: 600; }
.obs-form input:not([type=checkbox]) { width: 100%; padding: 11px 12px; border: 1px solid #d4d2cb; border-radius: 10px; font: inherit; box-sizing: border-box; }
.obs-form input:focus { outline: 2px solid #B3121F; outline-offset: 1px; }
.obs-form small { color: #666; font-size: 12.5px; }
.obs-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; } @media (max-width: 560px) { .obs-2 { grid-template-columns: 1fr; } }
.obs-inl { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; } .obs-inl input { flex: 1 1 180px; }
.obs-agree { display: flex !important; grid-template-columns: none; align-items: flex-start; gap: 8px !important; font-weight: 400; }
.obs-agree span { font-weight: 400 !important; }
.obs-err { color: #b42318; font-size: 12.5px; font-weight: 600; }
.obs-note { color: #555; font-size: 13.5px; margin: 0; }
.obs-me { display: grid; gap: 3px; background: #eef6ef; border: 1px solid #cfe7d4; border-radius: 12px; padding: 12px 14px; } .obs-me span { font-size: 13px; color: #3c5a41; }
.obs-flash { border-radius: 10px; padding: 10px 14px; margin-bottom: 12px; background: #eef2f8; } .obs-flash.err { background: #fdecea; color: #8c1d18; } .obs-flash.ok { background: #e7f5ea; color: #1f6b2c; }
.obs-sum { background: #fff; border-radius: 16px; overflow: hidden; border: 1px solid #e7e5df; position: sticky; top: 90px; }
.obs-sum img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; display: block; }
.obs-sum-b { padding: 16px 18px; display: grid; gap: 6px; font-size: 14px; } .obs-sum-b > b { font-size: 16px; }
.obs-price { display: grid; grid-template-columns: 1fr auto; gap: 6px 10px; margin: 10px 0 0; padding-top: 10px; border-top: 1px dashed #ddd; }
.obs-price dt, .obs-price dd { margin: 0; } .obs-price dd { text-align: right; }
.obs-price [hidden] { display: none; }
.obs-policy { margin-top: 10px; font-size: 12.5px; color: #555; background: #faf9f6; border-radius: 10px; padding: 10px 12px; } .obs-policy p { margin: 4px 0 0; }
.obs-thanks { background: #fff; border-radius: 18px; padding: 34px; text-align: center; border: 1px solid #e7e5df; display: grid; gap: 8px; } .obs-thanks > span { font-size: 46px; }

/* badge verify */
.obs-verify { display: grid; grid-template-columns: 360px 1fr; gap: 34px; align-items: center; }
@media (max-width: 760px) { .obs-verify { grid-template-columns: 1fr; justify-items: center; } }
.obs-verify img { width: 100%; max-width: 360px; height: auto; }
.obs-ok { display: inline-block; background: #e7f5ea; color: #1f6b2c; font-weight: 700; font-size: 13px; padding: 4px 12px; border-radius: 99px; }
.obs-verify h1 { margin: 10px 0 6px; }
.obs-vk { display: grid; grid-template-columns: 110px 1fr; gap: 6px 12px; margin: 16px 0; font-size: 14.5px; } .obs-vk dt { color: #666; } .obs-vk dd { margin: 0; font-weight: 600; }
.obs-past .ox-card { opacity: .93; }
/* 16:9 batch thumbnails (photos) instead of the software-icon look */
.obs-card .ox-card-img, .obs .ox-buy-img { height: auto; aspect-ratio: 16 / 9; }
.obs-card .ox-card-img img, .obs .ox-buy-img img { width: 100%; height: 100%; max-width: none; max-height: none; object-fit: cover; filter: none; }
.obs-demos { grid-template-columns: repeat(auto-fill, minmax(220px, 300px)); }
.ox-dhero .obs-rate.big b { color: #fff; } .ox-dhero .obs-rate.big span { color: rgba(255, 255, 255, .75); }
.obs-yt { grid-template-columns: minmax(0, 1fr); width: 100%; } .obs-yt img { max-width: 100%; height: auto; }
.obs-enrol .ox-crumbs, .obs-enrol .ox-crumbs a { color: #5b6170; }

/* ---------- online-batch card, COMPACT redesign (Er Dk 2026-10-23: "compact card, row mein 4 card") ----------
   4 cards a row on a desktop (1240px site width), 3 on a small laptop / big tablet, 2 on a tablet, 1 on a phone. */
.ox-cards:has(> .obc) { grid-template-columns: repeat(auto-fill, minmax(258px, 1fr)); gap: 18px; }
.obc { border-radius: 16px; border: 1px solid #e6e8ee; box-shadow: 0 2px 10px rgba(16, 35, 63, .05); }
.obc-img { position: relative; display: block; aspect-ratio: 16 / 9; background: linear-gradient(120deg, #0A3868, #5E0A14); overflow: hidden; }
.obc-img img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .35s ease; }
.obc:hover .obc-img img { transform: scale(1.035); }
.obc-sw { position: absolute; inset: 0; display: grid; place-items: center; font: 700 21px "Space Grotesk", sans-serif; color: #fff; text-align: center; padding: 0 16px; }
.obc-live, .obc-when { position: absolute; top: 9px; display: inline-flex; align-items: center; gap: 5px; padding: 3px 9px; border-radius: 999px; font-size: 10.5px; font-weight: 700;
  background: rgba(255, 255, 255, .95); box-shadow: 0 2px 8px rgba(0, 0, 0, .12); }
.obc-live { left: 9px; color: #B3121F; text-transform: uppercase; letter-spacing: .04em; }
.obc-live i { width: 6px; height: 6px; border-radius: 50%; background: #F1181C; animation: obc-pulse 1.6s infinite; }
@keyframes obc-pulse { 0% { box-shadow: 0 0 0 0 rgba(241, 24, 28, .55); } 70% { box-shadow: 0 0 0 6px rgba(241, 24, 28, 0); } 100% { box-shadow: 0 0 0 0 rgba(241, 24, 28, 0); } }
.obc-when { right: 9px; color: #0A3868; }
.obc-ribbon { position: absolute; left: 0; bottom: 9px; background: linear-gradient(90deg, #f59e0b, #d97706); color: #fff; font-size: 10.5px; font-weight: 700;
  padding: 3px 10px; border-radius: 0 999px 999px 0; box-shadow: 0 3px 10px rgba(217, 119, 6, .35); }
.obc-b { padding: 12px 14px 14px; display: flex; flex-direction: column; gap: 9px; flex: 1; }
.obc-kick { display: flex; gap: 5px; min-width: 0; }
.obc-kick span { font-size: 10.5px; font-weight: 700; letter-spacing: .03em; color: #0A3868; background: #eef3fa; padding: 2px 7px; border-radius: 5px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.obc-kick span + span { flex: none; color: #5b6170; background: #f3f4f7; font-weight: 600; }
.obc h3 { margin: 0; font: 700 15.5px/1.3 "Space Grotesk", sans-serif; letter-spacing: -.01em; min-height: 2.6em;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.obc h3 a { color: #14213d; text-decoration: none; } .obc h3 a:hover { color: #B3121F; }
.obc .obs-rate { margin: -3px 0 0; font-size: 12.5px; } .obc .obs-stars { font-size: 13px; }
.obc-teach { display: flex; align-items: center; gap: 9px; background: #f6f8fc; border: 1px solid #edf0f5; border-radius: 10px; padding: 6px 9px; }
.obc-av { position: relative; flex: none; width: 34px; height: 34px; border-radius: 50%; overflow: hidden; display: grid; place-items: center;
  background: linear-gradient(135deg, #0A3868, #5E0A14); color: #fff; font: 700 13.5px "Space Grotesk", sans-serif; }
.obc-av img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.obc-teach > div { min-width: 0; flex: 1; }
.obc-teach b { display: flex; align-items: center; gap: 4px; font-size: 13.5px; color: #14213d; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.obc-teach > div > span { display: block; font-size: 11.5px; color: #5b6170; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.obc-ok { flex: none; width: 14px; height: 14px; fill: #1d6fd8; }
.obc-facts { list-style: none; margin: 0; padding: 0; display: grid; gap: 5px; }
.obc-facts li { display: flex; gap: 7px; align-items: flex-start; min-width: 0; font-size: 12.5px; color: #4b5263; line-height: 1.35; }
.obc-facts li b { color: #1f2737; font-weight: 600; }
.obc-facts svg { flex: none; width: 14px; height: 14px; margin-top: 2px; fill: none; stroke: #B3121F; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.obc-seats { display: grid; gap: 4px; }
.obc-seats-t { display: flex; align-items: center; gap: 5px; font-size: 11.5px; color: #5b6170; }
.obc-seats-t svg { width: 13px; height: 13px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.obc-seats.low .obc-seats-t { color: #B3121F; font-weight: 700; }
.obc-bar { height: 4px; border-radius: 99px; background: #edf0f4; overflow: hidden; }
.obc-bar i { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, #F1181C, #B3121F); }
.obc-foot { margin-top: auto; padding-top: 10px; border-top: 1px solid #eef0f4; display: grid; gap: 9px; }
.obc-price { font: 700 20px "Space Grotesk", sans-serif; color: #14213d; line-height: 1.15; }
.obc-price s { font-size: .62em; } .obc-price em { font-size: .52em; }
.obc-price small { font: 500 11px "Work Sans", sans-serif; color: #6b7080; margin-top: 2px; }
.obc-btns { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr); gap: 8px; }
.obc-btns .btn { justify-content: center; text-align: center; padding: 8px 10px; font-size: 13.5px; }
.obc-btns .btn:only-child { grid-column: 1 / -1; }
.obs-past .obc { opacity: .93; }
@media (max-width: 600px) { .obc h3 { min-height: 0; } }

/* ---------- ONE BATCH PAGE layout (Er Dk 2026-10-23): sticky enrol card on the right, roadmap right under the hero ---------- */
.ox.obs { background: #f6f7fb; overflow-x: hidden; }
@supports (overflow: clip) { .ox.obs { overflow-x: clip; } }        /* clip (not hidden) keeps position: sticky working */
.obs-page { position: relative; z-index: 0; max-width: 1240px; margin: 0 auto; padding: 0 var(--gutter, 24px) 56px; box-sizing: content-box;
  display: grid; grid-template-columns: minmax(0, 1fr) 370px; column-gap: 36px; align-items: start; }
.obs-hero { grid-column: 1; grid-row: 1; position: relative; padding: 30px 0 34px; color: #fff; }
.obs-hero::before { content: ""; position: absolute; z-index: -1; top: 0; bottom: 0; left: -100vw; right: -100vw;
  background: radial-gradient(700px 340px at 75% 0%, rgba(241, 24, 28, .3), transparent 60%), linear-gradient(120deg, #0A1F3D 0%, #0A3868 60%, #3c0a12 100%); }
.obs-hero h1 { font-size: clamp(28px, 3.2vw, 42px); line-height: 1.12; letter-spacing: -.025em; margin: 0 0 12px; color: #fff; }
.obs-hero p.lead { margin: 0 0 16px; font-size: 16.5px; line-height: 1.6; color: rgba(255, 255, 255, .86); max-width: 680px; }
.obs-hero .obs-rate.big b { color: #fff; } .obs-hero .obs-rate.big span { color: rgba(255, 255, 255, .75); }
.obs-hero .ox-dtrainer b { color: #fff; } .obs-hero .ox-dtrainer span { color: rgba(255, 255, 255, .75); }
.obs-buy { grid-column: 2; grid-row: 1 / span 2; position: sticky; top: 84px; margin-top: 30px; z-index: 2;
  max-height: calc(100vh - 100px); overflow-y: auto; scrollbar-width: thin; }
.obs-buy .ox-buy-img { height: auto; aspect-ratio: 16 / 9; }
.obs-main { grid-column: 1; grid-row: 2; display: grid; gap: 22px; padding-top: 24px; min-width: 0; }
.obs-mbar { display: none; }
@media (max-width: 900px) {
  .obs-page { grid-template-columns: minmax(0, 1fr); padding-bottom: 90px; }
  .obs-hero { grid-row: 1; padding-bottom: 26px; }
  .obs-buy { grid-column: 1; grid-row: 2; position: static; max-height: none; overflow: visible; margin-top: 20px; }
  .obs-main { grid-row: 3; }
  .obs-mbar { display: flex; position: fixed; left: 0; right: 0; bottom: 0; z-index: 50; align-items: center; justify-content: space-between; gap: 12px;
    padding: 10px var(--gutter, 18px) calc(10px + env(safe-area-inset-bottom)); background: #fff; border-top: 1px solid #e6e8ee; box-shadow: 0 -8px 24px rgba(16, 35, 63, .1); }
  .obs-mbar .obs-fee { font: 700 19px "Space Grotesk", sans-serif; white-space: nowrap; } .obs-mbar .obs-fee s { font-size: .65em; } .obs-mbar .obs-fee em { display: none; }
  .obs-mbar .btn { flex: none; }
}
/* the lists under "About this batch": each heading a full-width row, points in two columns */
.obs-lists { display: grid; grid-template-columns: minmax(0, 1fr); gap: 16px; margin-top: 14px; }
.obs-lrow { border: 1px solid #e8eaf0; border-radius: 14px; padding: 16px 18px; background: #fff; }
.obs-lrow.learn { background: #f7fbf8; border-color: #d7eadc; }
.obs-lrow h3 { font-size: 16.5px; margin: 0 0 12px; }
.obs-lrow ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 26px; }
.obs-lrow li { display: flex; gap: 10px; align-items: flex-start; font-size: 14.5px; line-height: 1.5; color: #39404f; }
.obs-lrow li svg { flex: none; width: 18px; height: 18px; margin-top: 2px; fill: none; stroke: #5b6170; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.obs-lrow.learn li svg { stroke: #1f7a3a; stroke-width: 2.6; }
@media (max-width: 640px) { .obs-lrow ul { grid-template-columns: minmax(0, 1fr); } }
/* badges with their details (2026-10-24) */
.obs-awards .obs-cert { flex: 1 1 100%; max-width: 560px; }
.obs-badges { flex: 1 1 100%; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 330px), 1fr)); gap: 12px; }
.obs-badge2 { margin: 0; display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 14px; align-items: center;
  border: 1px solid #e8eaf0; border-radius: 14px; padding: 12px 14px; background: #fff; }
.obs-badge2 img { width: 150px; height: 150px; }
.obs-badge2 figcaption > b { display: block; font-size: 15.5px; margin-bottom: 6px; color: #14213d; }
.obs-badge2 dl { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 3px 10px; margin: 0 0 6px; font-size: 13px; }
.obs-badge2 dt { color: #7a8090; } .obs-badge2 dd { margin: 0; color: #2a3142; font-weight: 600; }
.obs-badge2 small { color: #6b7080; font-size: 12px; }
@media (max-width: 520px) { .obs-badge2 { grid-template-columns: minmax(0, 1fr); justify-items: center; text-align: left; } }

/* hero chip that jumps to the syllabus (Er Dk 2026-10-24) */
.ox-chips .obs-chip-link { padding: 5px 12px; border-radius: 999px; background: #fff; color: #0f172a; border: 1px solid #fff; font-size: 13px; font-weight: 700; text-decoration: none; }
.ox-chips .obs-chip-link:hover, .ox-chips .obs-chip-link:focus-visible { background: #fde68a; border-color: #fde68a; }
html { scroll-behavior: smooth; }
.obs-page .ox-sec[id] { scroll-margin-top: 90px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* ---------- 2026-10-24: section menu, free-demo pop-up, syllabus PDF, share, seats chip ---------- */
:root { --obs-top: 0px; }
.obs-page .ox-sec[id] { scroll-margin-top: calc(var(--obs-top) + 64px); }
.obs-tabs { position: sticky; top: var(--obs-top); z-index: 3; display: flex; gap: 2px; overflow-x: auto; scrollbar-width: none;
  background: rgba(255, 255, 255, .96); backdrop-filter: blur(6px); border: 1px solid #e6e8ee; border-radius: 12px; padding: 5px; box-shadow: 0 4px 16px rgba(16, 35, 63, .06); }
.obs-tabs::-webkit-scrollbar { display: none; }
.obs-tabs a { flex: none; padding: 8px 13px; border-radius: 8px; font-size: 14px; font-weight: 600; color: #475569; text-decoration: none; white-space: nowrap; }
.obs-tabs a:hover { background: #f1f5f9; color: #0f172a; }
.obs-tabs a.on { background: #0A1F3D; color: #fff; }
.ox-chips button.obs-chip-link { cursor: pointer; font-family: inherit; line-height: inherit; }
.ox-chips span.obs-chip-hot { background: #fef3c7; border-color: #fde68a; color: #92400e; }
.obs-buy .ox-buy-img { position: relative; }
.obs-prev { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; border: 0; cursor: pointer;
  background: linear-gradient(180deg, rgba(10, 31, 61, .05), rgba(10, 31, 61, .55)); color: #fff; font: inherit; }
.obs-prev .obs-play { position: static; transform: none; width: 58px; height: 58px; display: grid; place-items: center; border-radius: 50%; background: #fff; color: #dc2626; font-size: 22px; box-shadow: 0 6px 20px rgba(0, 0, 0, .3); transition: transform .15s; }
.obs-prev:hover .obs-play, .obs-prev:focus-visible .obs-play { transform: scale(1.08); }
.obs-prev b { font-size: 14px; text-shadow: 0 1px 3px rgba(0, 0, 0, .5); }
.obs-tools { display: grid; grid-template-columns: repeat(auto-fit, minmax(118px, 1fr)); gap: 6px; }
.obs-tool { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 8px 10px; border: 1px solid #e2e8f0; border-radius: 9px; background: #fff; color: #0f172a;
  font-family: inherit; font-size: 13px; font-weight: 600; line-height: 1.2; text-decoration: none; cursor: pointer; white-space: nowrap; }
.obs-syl-h .obs-tool { flex: none; }
.obs-tool:hover { border-color: #94a3b8; background: #f8fafc; }
.obs-tool svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.obs-tool.wa svg { stroke: #16a34a; }
.obs-syl-h { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.obs-syl-h h2 { margin-bottom: 8px; }
.obs-mseats { display: block; font: 600 11.5px/1.2 Inter, sans-serif; color: #b45309; }
dialog.obs-vid { width: min(960px, 94vw); padding: 0; border: 0; border-radius: 14px; background: #0b1220; color: #fff; box-shadow: 0 30px 80px rgba(0, 0, 0, .5); }
dialog.obs-vid::backdrop { background: rgba(2, 6, 23, .75); }
.obs-vid-h { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 12px 10px 16px; }
.obs-vid-h b { font-size: 15px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.obs-vid-x { flex: none; width: 34px; height: 34px; border: 0; border-radius: 50%; background: rgba(255, 255, 255, .12); color: #fff; font-size: 16px; cursor: pointer; }
.obs-vid-f { aspect-ratio: 16 / 9; background: #000; }
.obs-vid-f iframe { width: 100%; height: 100%; border: 0; display: block; }
.obs-vid-cta { display: flex; align-items: center; justify-content: flex-end; gap: 12px; padding: 10px 14px; font-size: 14px; color: rgba(255, 255, 255, .8); }
@media (max-width: 900px) { .obs-tabs { border-radius: 0; margin: 0 calc(-1 * var(--gutter, 18px)); border-left: 0; border-right: 0; } }

/* syllabus PDF pop-up: name + mobile + e-mail code (Er Dk 2026-10-24) */
dialog.obs-sgate { width: min(440px, 94vw); border: 0; border-radius: 16px; padding: 0; box-shadow: 0 30px 80px rgba(2, 6, 23, .4); }
dialog.obs-sgate::backdrop { background: rgba(2, 6, 23, .6); }
.obs-sgate form { display: grid; gap: 12px; padding: 20px 22px 22px; }
.obs-sgate-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.obs-sgate-top h3 { margin: 0; font-size: 19px; }
.obs-sgate-top .obs-vid-x { background: #f1f5f9; color: #0f172a; }
.obs-sgate-sub { margin: -4px 0 2px; font-size: 13.5px; color: #64748b; line-height: 1.5; }
.obs-sgate label { display: grid; gap: 5px; font-size: 13px; font-weight: 600; color: #334155; }
.obs-sgate input { width: 100%; box-sizing: border-box; padding: 10px 12px; border: 1px solid #cbd5e1; border-radius: 10px; font: inherit; font-weight: 400; }
.obs-sgate input:focus { outline: 2px solid #0A3868; outline-offset: 0; border-color: #0A3868; }
.obs-sgate-row { display: flex; gap: 8px; } .obs-sgate-row .btn { flex: none; }
.obs-sgate-msg { margin: 0; min-height: 18px; font-size: 13px; color: #475569; } .obs-sgate-msg.ok { color: #15803d; } .obs-sgate-msg.bad { color: #b91c1c; }
.obs-sgate-note { font-size: 12.5px; color: #64748b; text-align: center; }
/* 2026-10-28: the chat button sits above the slim bottom enrol / enquire bar (online-batch + software pages) */
@media (max-width: 900px) { body:has(.obs-mbar) .sc-fab { bottom: 84px; } }