:root{
    color-scheme: light;
    --ink:#24275E;
    --ink-dark:#13153A;
    --ink-soft:#3C4080;
    --paper:#FAFAF9;
    --panel:#FFFFFF;
    --slate:#5B6178;
    --line:#E1E2EA;
    --teal:#24275E;
    --teal-soft:#E7E8F1;
    --amber:#B9762C;
    --radius:2px;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:'Inter',sans-serif;
    font-size:16px;
    line-height:1.55;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,.disp{
    font-family:'Oswald',sans-serif;
    text-transform:uppercase;
    letter-spacing:0.01em;
    margin:0;
    color:var(--ink);
  }
  .mono{font-family:'IBM Plex Mono',monospace;}
  .wrap{max-width:1120px;margin:0 auto;padding:0 28px;}
  a{color:inherit;}
  img{max-width:100%;display:block;}
  .eyebrow{
    font-family:'IBM Plex Mono',monospace;
    font-size:12.5px;
    letter-spacing:0.18em;
    text-transform:uppercase;
    color:var(--teal);
    font-weight:500;
  }

  /* root-canal divider motif */
  .canal-divider{width:100%;height:34px;display:block;margin:0 0 6px;opacity:.55;}
  .canal-divider path{fill:none;stroke:var(--ink);stroke-width:2;stroke-linecap:round;}

  /* header */
  header{
    position:sticky;top:0;z-index:50;
    background:rgba(250,249,249,0.94);
    backdrop-filter:blur(6px);
    border-bottom:1px solid var(--line);
  }
  .nav{display:flex;align-items:center;justify-content:space-between;padding:14px 0;gap:18px;}
  .nav-logo{display:flex;align-items:center;gap:10px;text-decoration:none;}
  .nav-logo img{height:34px;width:auto;}
  .nav-logo span{font-family:'Oswald';font-size:14px;letter-spacing:.04em;text-transform:uppercase;line-height:1.1;}
  .nav-links{display:none;gap:26px;font-size:14px;font-weight:500;}
  @media(min-width:860px){.nav-links{display:flex;}}
  .nav-links a{text-decoration:none;color:var(--slate);}
  .nav-links a:hover{color:var(--ink);}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-family:'Oswald';font-size:14px;letter-spacing:.04em;text-transform:uppercase;
    padding:12px 22px;border-radius:var(--radius);text-decoration:none;cursor:pointer;
    border:1px solid transparent;font-weight:600;
    transition:transform .12s ease, box-shadow .12s ease;
  }
  .btn:focus-visible{outline:3px solid var(--teal);outline-offset:2px;}
  .btn-primary{background:var(--ink);color:#fff;border:1px solid rgba(255,255,255,.5);}
  .btn-primary:hover{background:var(--ink-soft);transform:translateY(-1px);box-shadow:0 6px 16px rgba(36,39,94,.35);}
  .btn-ghost{background:transparent;border:1px solid var(--ink);color:var(--ink);}
  .btn-ghost:hover{background:var(--ink);color:#fff;}
  .btn-outline-light{background:transparent;border:1px solid rgba(255,255,255,.5);color:#fff;}
  .btn-outline-light:hover{background:rgba(255,255,255,.12);}
  .btn-sm{padding:9px 16px;font-size:12.5px;}
  .lang-switch{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;flex-shrink:0;}
  .lang-btn{border:none;background:transparent;padding:7px 12px;font-family:'IBM Plex Mono';font-size:12px;letter-spacing:.05em;cursor:pointer;color:var(--slate);}
  .lang-btn.active{background:var(--ink);color:#fff;}
  .lang-btn:not(.active):hover{color:var(--ink);}

  /* hero */
  .hero{
    background:var(--ink);
    color:#fff;position:relative;overflow:hidden;
    padding:74px 0 90px;
  }
  .hero-ghost{
    position:absolute;right:-2%;top:8%;
    font-family:'Oswald';font-weight:700;font-size:min(13vw,150px);
    color:rgba(255,255,255,0.045);white-space:nowrap;letter-spacing:0;
    pointer-events:none;line-height:1;
  }
  .hero-inner{position:relative;z-index:2;}
  .hero h1{
    font-size:clamp(40px,7vw,84px);
    line-height:0.98;font-weight:700;
    margin:14px 0 6px;color:#fff;
  }
  .hero .lecturer-name{
    font-size:clamp(18px,2.6vw,26px);color:var(--teal-soft);
    font-family:'Oswald';letter-spacing:.06em;font-weight:500;margin-bottom:26px;
  }
  .hero p.lede{max-width:600px;color:rgba(255,255,255,.78);font-size:17px;margin:0 0 28px;}
  .pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;}
  .pill{
    border:1px solid rgba(255,255,255,.28);
    border-radius:999px;padding:8px 16px;font-size:13px;
    font-family:'IBM Plex Mono';color:#fff;display:flex;gap:8px;align-items:center;
    flex-wrap:wrap;max-width:100%;row-gap:2px;
  }
  .pill b{color:var(--teal-soft);font-weight:600;}
  .hero-cta{display:flex;gap:14px;flex-wrap:wrap;}

  section{padding:84px 0;}
  .section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:40px;flex-wrap:wrap;position:relative;}
  .section-head h2{font-size:clamp(28px,4vw,42px);font-weight:600;}
  .ghost-behind{
    position:absolute;right:0;bottom:6px;font-family:'Oswald';font-weight:700;
    font-size:clamp(20px,4.4vw,56px);color:var(--line);letter-spacing:0;
    z-index:0;white-space:nowrap;
  }

  /* objectives */
  .obj-list{counter-reset:obj;border-top:1px solid var(--line);}
  .obj-item{
    counter-increment:obj;
    display:grid;grid-template-columns:64px 1fr;gap:22px;
    padding:26px 0;border-bottom:1px solid var(--line);
  }
  .obj-item::before{
    content:counter(obj,decimal-leading-zero);
    font-family:'IBM Plex Mono';color:var(--teal);font-size:20px;font-weight:500;
  }
  .obj-item p{margin:0;font-size:17px;max-width:680px;}

  /* programme timeline */
  .day-card{
    background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
    padding:30px 30px 28px;margin-bottom:18px;position:relative;
  }
  .day-head{margin-bottom:18px;}
  .day-tag{font-family:'Oswald';font-size:24px;letter-spacing:.01em;color:var(--ink);font-weight:600;text-transform:uppercase;display:block;}
  .day-title{font-size:15.5px;margin-top:4px;color:var(--slate);font-family:'Inter';font-weight:500;text-transform:none;letter-spacing:0;}
  .day-where{
    display:flex;align-items:center;gap:8px;margin-top:14px;padding-top:14px;
    border-top:1px dashed var(--line);font-family:'IBM Plex Mono';font-size:13px;color:var(--slate);
  }
  .day-where b{color:var(--teal);font-weight:500;}
  .day-card ul{margin:0;padding:0;list-style:none;display:grid;gap:10px;}
  .day-card li{padding-left:18px;position:relative;font-size:15.5px;color:#3a3d4c;}
  .day-card li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;background:var(--teal);border-radius:50%;}

  /* detailed lecture schedule */
  .schedule{margin-top:26px;border-top:1px solid var(--line);}
  .schedule-block{padding:26px 0 4px;}
  .schedule-block + .schedule-block{margin-top:18px;border-top:1px solid var(--line);}
  .schedule-period{
    margin-bottom:10px;font-family:'IBM Plex Mono';font-size:12px;font-weight:600;
    letter-spacing:.13em;color:var(--teal);text-transform:uppercase;
  }
  .schedule-item{
    display:grid;grid-template-columns:112px 1fr;gap:22px;position:relative;
    padding:18px 0 18px 18px;border-left:1px solid var(--line);
  }
  .schedule-item::before{
    content:"";position:absolute;left:-4px;top:26px;width:7px;height:7px;
    border-radius:50%;background:var(--ink);
  }
  .schedule-item time{
    font-family:'IBM Plex Mono';font-size:13px;font-weight:500;color:var(--ink);
    white-space:nowrap;padding-top:2px;
  }
  .schedule-content h4{margin:0;font-family:'Inter';font-size:15.5px;line-height:1.4;color:var(--ink);}
  .schedule-content p{max-width:720px;margin:7px 0 0;font-size:14px;line-height:1.6;color:var(--slate);}
  .schedule-item-break{padding-top:12px;padding-bottom:12px;}
  .schedule-item-break::before{top:21px;background:var(--amber);}
  .schedule-item-break .schedule-content h4{font-size:13px;font-weight:600;color:var(--slate);}
  .schedule-item-qa .schedule-content h4{color:var(--teal);}
  @media(max-width:560px){
    .schedule-item{grid-template-columns:1fr;gap:5px;padding-left:16px;}
    .schedule-content p{margin-top:5px;}
  }

  /* logistics */
  .info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);}
  .info-cell{background:var(--panel);padding:26px;}
  .info-cell .num{font-family:'IBM Plex Mono';color:var(--teal);font-size:13px;display:block;margin-bottom:10px;}
  .info-cell h3{font-size:16px;text-transform:none;font-family:'Inter';font-weight:700;margin-bottom:8px;}
  .info-cell p{margin:0;font-size:14.5px;color:var(--slate);}

  /* lecturer */
  .lecturer{display:grid;grid-template-columns:220px 1fr;gap:46px;align-items:start;}
  @media(max-width:700px){.lecturer{grid-template-columns:1fr;}}
  .monogram{
    width:100%;aspect-ratio:1/1.1;background:var(--ink);border-radius:var(--radius);
    display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;
  }
  .monogram svg{width:62%;}
  .monogram svg path{stroke:rgba(255,255,255,.85);}
  .lecturer-photo{
    width:100%;aspect-ratio:1/1;border-radius:50%;overflow:hidden;position:relative;
    background:var(--ink);margin-top:6px;
  }
  .lecturer-photo img{width:100%;height:100%;object-fit:cover;object-position:center top;}
  .lecturer-photo::after{
    content:"";position:absolute;inset:0;border-radius:50%;
    box-shadow:inset 0 0 0 1px rgba(255,255,255,.15);
  }
  .lecturer h3{font-size:30px;margin-bottom:4px;}
  .lecturer .role{font-family:'IBM Plex Mono';font-size:13px;color:var(--teal);margin-bottom:18px;display:block;}
  .lecturer p{color:#3a3d4c;font-size:15.5px;max-width:640px;}
  .lecturer-links{display:flex;gap:14px;margin-top:18px;flex-wrap:wrap;}
  .lecturer-links a{
    font-family:'IBM Plex Mono';font-size:13px;text-decoration:none;color:var(--ink);
    border-bottom:1px solid var(--ink);padding-bottom:2px;
  }
  .lecturer-links a:hover{color:var(--teal);border-color:var(--teal);}

  /* pricing */
  .price-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;}
  .price-card{
    border:1px solid var(--line);background:var(--panel);padding:28px 24px;border-radius:var(--radius);
    display:flex;flex-direction:column;gap:14px;position:relative;cursor:pointer;transition:border-color .12s ease, transform .12s ease;
  }
  .price-card:hover{border-color:var(--ink);transform:translateY(-2px);}
  .price-card:focus-visible{outline:2px solid var(--teal);outline-offset:2px;}
  .price-card.is-closed{cursor:not-allowed;opacity:.5;}
  .price-card.is-closed:hover{border-color:var(--line);transform:none;}
  .closed-label{display:none;}
  .price-card.is-closed .closed-label{display:block;font-family:'IBM Plex Mono';font-size:11px;color:var(--slate);text-transform:uppercase;letter-spacing:.05em;margin-top:4px;}
  /* pricing table */
  .ptable{width:100%;border-collapse:collapse;margin-top:6px;}
  .ptable th{background:var(--ink);color:#fff;padding:12px 16px;font-family:'Oswald';font-size:13px;letter-spacing:.04em;text-align:left;}
  .ptable th:not(:first-child){text-align:center;}
  .ptable td{padding:12px 16px;border-bottom:1px solid var(--line);font-size:14px;vertical-align:middle;}
  .ptable tr:last-child td{border-bottom:none;}
  .ptable tr.eb-row{background:#FDF8F0;}
  .ptable tr.eb-row td:first-child{font-style:italic;}
  .ptable td.price-cell{text-align:center;cursor:pointer;font-family:'Oswald';font-size:18px;color:var(--ink);white-space:nowrap;}
  .ptable td.price-cell:hover{background:var(--teal-soft);border-radius:4px;}
  .ptable td.price-cell small{display:block;font-family:'IBM Plex Mono';font-size:11px;color:var(--slate);font-style:normal;font-weight:400;}
  .ptable td.price-cell.is-full{opacity:.4;cursor:not-allowed;}
  .ptable .eb-tag{
    font-family:'IBM Plex Mono';font-size:11px;background:var(--amber);color:#fff;
    padding:2px 7px;border-radius:3px;margin-left:6px;vertical-align:2px;
    white-space:nowrap;display:inline-block;
  }
  @media(max-width:640px){
    .ptable .eb-tag{display:block;margin-left:0;margin-top:5px;width:fit-content;}
  }
  .capacity-bar{font-family:'IBM Plex Mono';font-size:12px;color:var(--slate);margin-top:10px;}
  .capacity-bar b{color:var(--ink);}
  /* company billing */
  .company-fields{display:none;margin-top:14px;padding:14px;border:1px solid var(--line);border-radius:var(--radius);background:#FAFAF9;}
  .company-fields.visible{display:block;}
  /* student non-EE notice */
  .intl-notice{display:none;margin-top:10px;padding:10px 14px;background:#E8F0FE;border:1px solid #4285F4;border-radius:var(--radius);font-size:13px;color:var(--ink);}
  /* cancellation modal */
  .cancel-overlay{display:none;position:fixed;inset:0;background:rgba(19,21,58,.55);z-index:110;align-items:center;justify-content:center;padding:20px;}
  .cancel-overlay.is-open{display:flex;}
  .cancel-card{background:#fff;border-radius:var(--radius);padding:36px 32px;max-width:440px;width:100%;box-shadow:0 20px 50px rgba(19,21,58,.35);}
  .cancel-card h3{font-size:20px;color:var(--ink);margin-bottom:10px;}
  .cancel-card p{font-size:14px;color:var(--slate);margin:0 0 18px;line-height:1.6;}
  .cancel-card input{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:var(--radius);font-family:'IBM Plex Mono';font-size:15px;margin-bottom:14px;}
  .cancel-card .btn-row{display:flex;gap:10px;flex-wrap:wrap;}
  .cancel-card .btn-cancel-close{background:transparent;border:1px solid var(--line);color:var(--slate);font-family:'Oswald';font-size:13px;letter-spacing:.04em;text-transform:uppercase;padding:10px 18px;border-radius:var(--radius);cursor:pointer;}
  .cancel-msg{font-size:14px;margin-top:12px;padding:10px 14px;border-radius:var(--radius);}
  .cancel-msg.ok{background:#E7F2F1;color:var(--ink);}
  .cancel-msg.err{background:#FBEFEF;color:#B33A3A;}
  .ticket-opt.is-closed{opacity:.45;cursor:not-allowed;}
  .price-card h3{font-size:16px;font-family:'Oswald';letter-spacing:.04em;}
  .price-card .deadline{font-size:13px;color:var(--slate);min-height:34px;}
  .price-card .amount{font-family:'Oswald';font-size:34px;color:var(--ink);}
  .price-card .amount small{font-family:'IBM Plex Mono';font-size:13px;color:var(--slate);font-weight:400;}

  /* form */
  .form-shell{
    background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
    padding:40px clamp(20px,5vw,52px);
  }
  .grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
  @media(max-width:640px){.grid-2{grid-template-columns:1fr;}}
  .field{margin-bottom:18px;}
  .field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--ink);}
  .field input:not([type="radio"]):not([type="checkbox"]),.field select,.field textarea{
    width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius);
    font-family:'Inter';font-size:15px;background:#fff;color:var(--ink);
  }
  .field input:not([type="radio"]):not([type="checkbox"]):focus,.field select:focus,.field textarea:focus{outline:2px solid var(--teal);outline-offset:1px;}
  .ticket-options{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:10px;margin-bottom:22px;}
  .ticket-opt{display:flex!important;align-items:center;gap:10px;border:1px solid var(--line);border-radius:var(--radius);padding:14px;cursor:pointer;font-size:14px;}
  .ticket-opt input[type="radio"],.consent input[type="checkbox"]{width:18px;height:18px;min-width:18px;margin:0;padding:0;accent-color:var(--teal);}
  .ticket-opt span{min-width:0;}
  .ticket-opt:has(input:checked){border-color:var(--teal);background:var(--teal-soft);}
  .consent{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--slate);margin-bottom:26px;}
  .consent input[type="checkbox"]{margin-top:1px;}
  #formMsg{display:none;margin-top:18px;padding:16px 18px;border-radius:var(--radius);background:var(--teal-soft);color:var(--ink);font-size:14.5px;}

  /* payment */
  .pay-grid{display:grid;grid-template-columns:1fr;gap:36px;max-width:640px;}
  .pay-details dl{display:grid;grid-template-columns:130px 1fr;gap:10px 14px;margin:0 0 22px;}
  .pay-details dt{font-size:12.5px;color:var(--slate);font-family:'IBM Plex Mono';align-self:center;}
  .pay-details dd{margin:0;font-family:'IBM Plex Mono';font-size:15px;display:flex;align-items:center;gap:10px;}
  .copy-btn{
    border:1px solid var(--line);background:#fff;font-size:11px;padding:4px 9px;border-radius:3px;cursor:pointer;
    font-family:'Inter';color:var(--slate);
  }
  .copy-btn:hover{border-color:var(--teal);color:var(--teal);}
  .bank-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px;margin-top:14px;}
  .bank-btn{
    border:1px solid var(--line);background:#fff;border-radius:var(--radius);padding:14px 12px;text-align:center;
    text-decoration:none;color:var(--ink);font-family:'Oswald';font-size:14px;letter-spacing:.03em;
    transition:border-color .12s ease, transform .12s ease;
  }
  .bank-btn:hover{border-color:var(--teal);color:var(--teal);transform:translateY(-1px);}
  .note{font-size:13px;color:var(--slate);margin-top:16px;line-height:1.6;}

  footer{background:var(--ink);color:rgba(255,255,255,.7);padding:54px 0 34px;}
  .footer-top{display:flex;justify-content:space-between;flex-wrap:wrap;gap:30px;margin-bottom:34px;}
  .footer-logo img{height:64px;width:auto;margin-bottom:14px;}
  .footer-cols{display:flex;gap:48px;flex-wrap:wrap;}
  .footer-cols h4{font-family:'IBM Plex Mono';font-size:12px;letter-spacing:.1em;color:#fff;margin-bottom:12px;text-transform:uppercase;}
  .footer-cols a{display:block;color:rgba(255,255,255,.7);text-decoration:none;font-size:14px;margin-bottom:8px;}
  .footer-cols a:hover{color:#fff;}
  .footer-bottom{border-top:1px solid rgba(255,255,255,.15);padding-top:22px;font-size:12.5px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;}

  .sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);}

  /* confirmation modal */
  .modal-overlay{
    display:none;position:fixed;inset:0;background:rgba(19,21,58,.55);z-index:100;
    align-items:center;justify-content:center;padding:20px;
  }
  .modal-overlay.is-open{display:flex;}
  .modal-card{
    background:#fff;border-radius:var(--radius);padding:36px 32px;max-width:420px;width:100%;
    text-align:center;box-shadow:0 20px 50px rgba(19,21,58,.35);
  }
  .modal-card h3{font-size:24px;color:var(--ink);margin-bottom:12px;}
  .modal-card p{font-size:15px;color:var(--slate);line-height:1.6;margin:0 0 24px;}
  .hero-eyebrow{color:var(--teal-soft);}
  .section-paper{background:var(--paper);}
  .section-panel{background:var(--panel);}
  .section-bordered{border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .section-top-border{border-top:1px solid var(--line);}
  .horizontal-scroll{overflow-x:auto;}
  .note-primary{margin-top:18px;}
  .note-secondary{margin-top:8px;}
  .info-grid-spaced{margin-top:34px;}
  .price-date{font-size:11px;font-weight:400;letter-spacing:0;}
  .form-notice{margin-top:10px;padding:10px 14px;border-radius:var(--radius);font-size:13px;color:var(--ink);}
  .form-notice-warning{background:#FBEFE3;border:1px solid var(--amber);}
  .form-notice-error{padding:12px 14px;background:#FDECEC;border:1px solid #D9534F;font-size:13.5px;font-weight:600;color:#A32626;}
  .price-preview{font-family:'IBM Plex Mono';font-size:13px;color:var(--slate);padding:12px 14px;background:var(--teal-soft);border-radius:var(--radius);}
  .bank-heading{font-family:'Inter';font-size:15px;text-transform:none;margin:26px 0 10px;}
  .modal-card .confirm-booking-ref{font-size:18px;font-weight:700;color:var(--ink);overflow-wrap:anywhere;}
  .modal-card .confirm-queue-note{font-size:13px;color:var(--slate);margin-top:-8px;}
  @media (prefers-reduced-motion: reduce){ html{scroll-behavior:auto;} .btn{transition:none;} }