/* Online Courses hub v542 — isolated layout, no shared shell changes */
main:has(.oc-hub-hero){--oc-navy:#20384e;--oc-ink:#283747;--oc-gold:#c98b38;--oc-paper:#fffdf8;color:var(--oc-ink);font-family:inherit}main:has(.oc-hub-hero) *{box-sizing:border-box}.oc-hub-hero{min-height:382px;display:grid;grid-template-columns:54% 46%;background:#f6f0e7;overflow:hidden}.oc-hero-inner{padding:53px max(26px,calc((100vw - 1190px)/2)) 42px max(26px,calc((100vw - 1190px)/2));padding-right:24px;align-self:center}.oc-kicker{display:block;font-size:11px;letter-spacing:.15em;font-weight:700;color:#ad7838;text-transform:uppercase}.oc-hub-hero h1{font-family:'Playfair Display',Georgia,serif;color:var(--oc-navy);font-size:clamp(38px,4vw,58px);line-height:1.07;letter-spacing:-.025em;margin:12px 0 14px;font-weight:500}.oc-hub-hero h1 em{color:#b78042;font-weight:400}.oc-hub-hero p:not(.oc-kicker){max-width:480px;font-size:15px;line-height:1.6;margin:0 0 20px}.oc-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}.oc-primary,.oc-secondary{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:43px;padding:10px 17px;border-radius:5px;text-decoration:none;font-size:13px;font-weight:600}.oc-primary{background:var(--oc-navy);color:#fff}.oc-secondary{border:1px solid #c9c8c2;color:var(--oc-navy);background:#fffdf9}.oc-hero-art{position:relative;background:linear-gradient(125deg,rgba(255,249,239,.28),rgba(199,164,119,.1)),linear-gradient(150deg,#d8d1c6,#aab8b7 65%,#f2e1ca);min-height:382px}.oc-hero-art:after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,#f6f0e7 0%,transparent 22%)}.oc-art-caption{position:absolute;bottom:20px;right:26px;font-size:10px;letter-spacing:.16em;color:#43515b;z-index:1}.oc-gallery,.oc-workflow,.oc-formats,.oc-teachers,.oc-lab,.oc-contact{padding:46px max(26px,calc((100vw - 1190px)/2))}.oc-gallery-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:20px}.oc-gallery h2,.oc-workflow h2,.oc-formats h2,.oc-teachers h2,.oc-lab h2,.oc-contact h2{font:500 clamp(26px,2.6vw,37px)/1.17 'Playfair Display',Georgia,serif;color:var(--oc-navy);margin:6px 0 0}.oc-gallery-head p{font-size:13px;line-height:1.55;max-width:330px;margin:0;color:#6a7379}.oc-course-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.oc-course{min-height:185px;border-radius:7px;padding:17px 19px;display:flex;flex-direction:column;justify-content:space-between;color:#fff;text-decoration:none;overflow:hidden;position:relative;background:#546878}.oc-course:before{content:'';position:absolute;inset:0;background:linear-gradient(0deg,rgba(21,36,50,.8),rgba(21,36,50,.02) 75%);pointer-events:none}.oc-course>*{position:relative}.oc-course-num{font-size:10px;letter-spacing:.12em;font-weight:700;opacity:.9}.oc-course h3{font:500 24px/1.12 'Playfair Display',Georgia,serif;margin:0 0 5px;color:#fff}.oc-course p{font-size:12px;margin:0 0 10px;line-height:1.4;color:#f6f6f4}.oc-soon{font-size:9px;letter-spacing:.11em;opacity:.85}.oc-general{background:linear-gradient(125deg,#819c9c,#b3a38e)}.oc-professional{background:linear-gradient(125deg,#52677e,#a38c7a)}.oc-bilingual{background:linear-gradient(125deg,#9e8376,#66788d)}.oc-dyslexia{background:linear-gradient(125deg,#6d8c86,#b2a2a0)}.oc-young{background:linear-gradient(125deg,#b39472,#798c91)}.oc-private{background:linear-gradient(135deg,#142739,#273d51)}.oc-private-action{font-size:11px;color:#e5c694}.oc-manifesto{background:#eaf0ed;padding:38px 26px;text-align:center}.oc-manifesto-label{font-size:10px;letter-spacing:.18em;color:#657c75}.oc-manifesto>p{font:400 clamp(23px,3vw,40px)/1.24 'Playfair Display',Georgia,serif;color:var(--oc-navy);margin:13px 0 23px}.oc-manifesto>p em{color:#8d6c45}.oc-manifesto-bottom{display:flex;gap:25px;justify-content:center;flex-wrap:wrap;font-size:12px;color:#53635f}.oc-workflow-head{display:flex;justify-content:space-between;align-items:end;gap:30px}.oc-workflow-head p{font-size:13px;max-width:320px;line-height:1.5}.oc-workflow-track{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:22px;border-top:1px solid #e1dcd3;padding-top:18px}.oc-workflow-track div{display:grid;gap:5px}.oc-workflow-track small{color:#b08046;letter-spacing:.12em;font-size:10px}.oc-workflow-track strong{font-size:15px;font-weight:600}.oc-workflow-track span{font-size:12px;color:#6a7379}.oc-formats{background:#f4f0e9;display:grid;grid-template-columns:1fr 1.25fr;gap:35px}.oc-format-options{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;align-content:center}.oc-format-options>div{display:grid;gap:6px;border-left:1px solid #d4c6b5;padding:6px 0 6px 13px}.oc-format-options strong{font-size:15px}.oc-format-options span,.oc-format-options p{font-size:12px;line-height:1.5;color:#68717a}.oc-format-options p{grid-column:1/-1;margin:6px 0 0}.oc-teachers{display:grid;grid-template-columns:35% 1fr;gap:38px;align-items:center}.oc-teacher-visual{min-height:205px;background:linear-gradient(135deg,#ddd7cd,#9da9a3);border-radius:5px}.oc-teachers p{font-size:14px;line-height:1.6;max-width:530px}.oc-teachers em{color:#ad804b}.oc-teacher-name{font-size:12px;color:#68717a}.oc-lab{background:#f7f7f4;display:flex;justify-content:space-between;align-items:center;gap:25px}.oc-lab p,.oc-contact p{font-size:13px;line-height:1.5;max-width:520px}.oc-contact{display:flex;justify-content:space-between;align-items:center;gap:25px;background:#f6efe4}.oc-contact .oc-actions{justify-content:end}@media(max-width:850px){.oc-hub-hero{grid-template-columns:1fr}.oc-hero-art{min-height:150px}.oc-hero-inner{padding:35px 25px}.oc-course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.oc-gallery-head,.oc-workflow-head,.oc-lab,.oc-contact{align-items:start;flex-direction:column}.oc-formats{grid-template-columns:1fr}.oc-teachers{grid-template-columns:1fr}.oc-teacher-visual{min-height:170px}}@media(max-width:520px){.oc-course-grid{grid-template-columns:1fr}.oc-course{min-height:150px}.oc-gallery,.oc-workflow,.oc-formats,.oc-teachers,.oc-lab,.oc-contact{padding:32px 22px}.oc-workflow-track,.oc-format-options{grid-template-columns:1fr}.oc-format-options p{grid-column:auto}.oc-hub-hero h1{font-size:40px}}

/* v543: image-ready Online Courses hub, scoped to this page only. */
.oc-hub-hero{position:relative;display:block;min-height:382px;background:#f6f0e7 url('../assets/images/online-courses/online-courses-hero-live-lesson.webp') center center/cover no-repeat}
.oc-hero-inner{position:relative;z-index:2;width:min(100%,1190px);margin:0 auto;padding:53px 26px 42px;max-width:1190px}
.oc-hero-inner>p:not(.oc-kicker){max-width:460px}
.oc-hero-art{position:absolute;inset:0;min-height:0;background:none;pointer-events:none}
.oc-hero-art:after{display:none}
.oc-art-caption{right:22px;bottom:17px;color:#354451}
.oc-course{background-size:cover;background-position:center;background-repeat:no-repeat}
.oc-general{background-image:url('../assets/images/online-courses/online-courses-card-general-english.webp')}
.oc-professional{background-image:url('../assets/images/online-courses/online-courses-card-professional-english.webp')}
.oc-bilingual{background-image:url('../assets/images/online-courses/online-courses-card-bilingual-english.webp')}
.oc-dyslexia{background-image:url('../assets/images/online-courses/online-courses-card-english-for-dyslexia.webp')}
.oc-young{background-image:url('../assets/images/online-courses/online-courses-card-young-learners.webp')}
.oc-private{background-image:linear-gradient(135deg,rgba(20,39,57,.88),rgba(39,61,81,.83)),url('../assets/images/online-courses/online-courses-card-private-programmes.webp')}
@media(min-width:901px){.oc-hero-inner{padding-left:0;padding-right:0}.oc-hub-hero{min-height:382px}}
@media(max-width:900px){.oc-hub-hero{background-position:58% center}.oc-hero-inner{padding-left:26px;padding-right:26px}.oc-hub-hero:before{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(246,240,231,.96) 0%,rgba(246,240,231,.86) 48%,rgba(246,240,231,.12) 100%)}}
@media(max-width:600px){.oc-hub-hero{background-position:67% center}.oc-hub-hero:before{background:linear-gradient(90deg,rgba(246,240,231,.98),rgba(246,240,231,.9) 65%,rgba(246,240,231,.56))}.oc-hero-inner{padding:36px 24px 35px}.oc-art-caption{display:none}}

/* v544: restrained golden distinction for Young Learners only; preserve photograph and text. */
.oc-course.oc-young{position:relative;isolation:isolate;box-shadow:inset 0 0 0 1px rgba(224,174,74,.48)}
.oc-course.oc-young::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;z-index:0;background:linear-gradient(110deg,rgba(227,174,66,.095),transparent 62%);}
.oc-course.oc-young::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:linear-gradient(90deg,rgba(230,181,77,.75),rgba(230,181,77,.24));z-index:2;pointer-events:none;}
.oc-course.oc-young > *{position:relative;z-index:1}

/* v545: directional text-protection overlay for Young Learners only.
   Preserve the restrained golden line, photographic colour and card geometry. */
.oc-course.oc-young::before{
  content:"";position:absolute;inset:0;height:auto;left:0;right:0;top:0;z-index:0;pointer-events:none;
  background:linear-gradient(90deg,rgba(13,27,40,.67) 0%,rgba(13,27,40,.44) 38%,rgba(13,27,40,.09) 78%,transparent 100%),
             linear-gradient(0deg,rgba(13,27,40,.48) 0%,rgba(13,27,40,.12) 52%,transparent 82%);
}
.oc-course.oc-young::after{
  content:"";position:absolute;inset:0;z-index:2;pointer-events:none;border-radius:inherit;
  border:1px solid rgba(224,174,74,.40);border-top:2px solid rgba(230,181,77,.70);
  background:linear-gradient(110deg,rgba(227,174,66,.055),transparent 60%);
}
.oc-course.oc-young .oc-course-num{text-shadow:0 1px 5px rgba(0,0,0,.7);opacity:1}

/* v546: C2 Difference — accessible, crawlable disclosure panels */
.oc-manifesto{padding:39px 26px 45px}
.oc-manifesto>p{margin-bottom:27px}
.oc-difference-grid{max-width:1060px;margin:0 auto;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:45px;row-gap:0;text-align:left}
.oc-difference-item{border-top:1px solid rgba(68,94,86,.21);min-width:0}
.oc-difference-item:nth-last-child(-n+2){border-bottom:1px solid rgba(68,94,86,.21)}
.oc-difference-item summary{list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:13px;padding:13px 2px 14px;min-height:68px}
.oc-difference-item summary::-webkit-details-marker{display:none}
.oc-difference-number{font:600 10px/1.8 Arial,sans-serif;letter-spacing:.09em;color:#a67d4a;flex:0 0 21px;padding-top:1px}
.oc-difference-copy{display:flex;flex-direction:column;gap:3px;flex:1;min-width:0}
.oc-difference-copy strong{font:600 15px/1.25 Arial,sans-serif;color:#203b50}
.oc-difference-copy>span{font:12px/1.45 Arial,sans-serif;color:#61716c}
.oc-difference-toggle{position:relative;display:block;width:18px;height:18px;flex:0 0 18px;margin-top:2px}
.oc-difference-toggle:before,.oc-difference-toggle:after{content:"";position:absolute;left:3px;top:8px;width:12px;height:1.5px;background:#a67d4a;transition:transform .2s ease}
.oc-difference-toggle:after{transform:rotate(90deg)}
.oc-difference-item[open] .oc-difference-toggle:after{transform:rotate(0)}
.oc-difference-item summary:hover .oc-difference-copy strong{color:#986d3e}
.oc-difference-item summary:focus-visible{outline:2px solid #a67d4a;outline-offset:2px;border-radius:3px}
.oc-difference-detail{padding:0 29px 16px 36px}
.oc-difference-detail p{font:13px/1.7 Arial,sans-serif;color:#425651;margin:0}
.oc-difference-detail a{color:#244f65;text-underline-offset:3px}
@media(max-width:720px){.oc-manifesto{padding:35px 20px 38px}.oc-difference-grid{grid-template-columns:1fr;gap:0}.oc-difference-item:nth-last-child(2){border-bottom:0}.oc-difference-item:last-child{border-bottom:1px solid rgba(68,94,86,.21)}.oc-difference-detail{padding-right:14px}}
@media(prefers-reduced-motion:reduce){.oc-difference-toggle:before,.oc-difference-toggle:after{transition:none}}