/* Public navigation, shared brand artwork, and CBT identity. No external assets. */
:root{
  --color-footer-start:#1E1552;--color-footer-end:#0F0A2C;
  --gradient-footer:linear-gradient(135deg,var(--color-footer-start),var(--color-footer-end));
  --gradient-accent:linear-gradient(90deg,var(--color-cyan),var(--color-purple),var(--color-teal));
  --shadow-cta:0 4px 18px rgb(66 41 193 / 16%);
}
.site-header{position:sticky;top:0;z-index:50;background:rgb(255 255 255 / 94%);border-bottom:1px solid var(--color-line);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.site-header .nav{position:relative;min-height:80px;gap:28px}
.site-header .brand{min-width:0;flex-shrink:0;gap:12px}
.brand-copy{min-width:0}
.site-header .brand-mark{width:44px;height:44px;border-radius:12px;background:var(--gradient-primary);color:white;box-shadow:none}
.site-header .brand strong{font-size:14px;line-height:1.45;color:var(--color-deep-indigo)}
.site-header .brand small{font-size:9px;letter-spacing:.02em;line-height:1.7}
.site-navigation{display:flex;align-items:center;justify-content:flex-end;gap:28px;margin-left:auto;min-width:0}
.site-header .nav-links{display:flex;align-items:center;gap:20px;margin:0;min-width:0}
.site-header .nav-links>a,.site-header .program-toggle{position:relative;display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:8px 0;color:var(--color-text);white-space:nowrap;font-family:inherit;font-size:14px;font-weight:600;text-decoration:none;line-height:1.5;background:transparent;border:0;cursor:pointer}
.site-header .nav-links>a::after,.site-header .program-toggle::after{content:"";position:absolute;left:0;right:0;bottom:3px;height:2px;border-radius:2px;background:var(--color-cyan);transform:scaleX(0);transform-origin:left;transition:transform .15s ease}
.site-header .nav-links>a:hover,.site-header .nav-links>a[aria-current=page],.site-header .program-toggle:hover,.site-header .program-toggle[aria-expanded=true]{color:var(--color-royal-indigo)}
.site-header .nav-links>a:hover::after,.site-header .nav-links>a:focus-visible::after,.site-header .nav-links>a[aria-current=page]::after,.site-header .program-toggle[aria-expanded=true]::after{transform:scaleX(1)}
.site-header .program-toggle svg{transition:transform .15s ease;flex-shrink:0}
.site-header .program-toggle[aria-expanded=true] svg{transform:rotate(180deg)}
.site-header .nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.site-header .nav-actions form{margin:0}
.site-header .nav-actions .btn{min-height:44px;padding:10px 18px;font-size:14px;font-weight:650;border-radius:12px}
.site-header .profile-link{max-width:150px;overflow-wrap:anywhere;text-align:center;line-height:1.5}
.site-header .nav-cta{background:var(--gradient-primary);color:white;border:1px solid transparent;box-shadow:var(--shadow-cta)}
.site-header .nav-cta:hover{background:var(--gradient-primary);box-shadow:0 5px 20px rgb(66 41 193 / 24%);transform:translateY(-1px)}
.site-header .menu-btn{display:none;align-items:center;justify-content:center;width:44px;height:44px;flex-shrink:0;margin-left:auto;color:var(--color-deep-indigo);border:1px solid var(--color-control-border);border-radius:12px;background:white}
.site-header .menu-btn[hidden],.site-header .program-toggle[hidden],.site-header .program-panel[hidden]{display:none!important}
.menu-icon{position:relative;display:block;width:20px;height:16px}
.menu-icon span{position:absolute;display:block;width:20px;height:2px;border-radius:2px;background:currentColor;transition:transform .15s ease,opacity .15s ease;left:0;top:7px}
.menu-icon span:first-child{top:0}.menu-icon span:last-child{top:14px}
.menu-btn[aria-expanded=true] .menu-icon span:first-child{transform:translateY(7px) rotate(45deg)}
.menu-btn[aria-expanded=true] .menu-icon span:nth-child(2){opacity:0}
.menu-btn[aria-expanded=true] .menu-icon span:last-child{transform:translateY(-7px) rotate(-45deg)}
.program-disclosure{min-width:0}
.site-header[data-navigation-ready] .program-fallback-label{display:none}
.site-header .program-panel{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:28px;background:white;color:var(--color-text);border:1px solid var(--color-line);border-radius:16px;padding:24px;box-shadow:0 16px 40px rgb(36 22 95 / 12%);text-align:left}
.site-header[data-navigation-ready] .program-panel{position:absolute;top:calc(100% - 1px);left:240px;right:0;z-index:2}
.site-header .program-panel h2{font-size:13px;font-weight:700;color:var(--color-muted);letter-spacing:.02em;line-height:1.6;margin:0 0 12px}
.site-header .program-main{min-width:0}
.site-header .program-card{display:flex;align-items:center;gap:12px;min-height:92px;padding:12px;border-radius:12px;text-decoration:none;color:var(--color-deep-indigo);font-weight:500;white-space:normal}
.site-header .program-card:hover,.site-header .program-card:focus-visible{background:var(--color-surface-soft);color:var(--color-royal-indigo)}
.site-header .program-card>span:nth-child(2){min-width:0}
.site-header .program-card strong{font-size:16px;font-weight:700;display:block;line-height:1.5}
.site-header .program-card small{font-size:13px;font-weight:400;color:var(--color-muted);display:block;line-height:1.65;margin-top:3px;max-width:30ch}
.program-icon{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;background:var(--color-surface-soft);color:var(--color-royal-indigo);flex-shrink:0}
.program-link-arrow{font-size:18px;line-height:1;flex-shrink:0;margin-left:auto}
.program-categories{padding-left:28px;border-left:1px solid var(--color-line);min-width:0}
.program-categories ul{list-style:none;padding:0;margin:0}
.site-header .program-categories a{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px;padding:10px 12px;color:var(--color-text);border-radius:10px;font-size:14px;font-weight:550;line-height:1.6;text-decoration:none}
.site-header .program-categories a:hover,.site-header .program-categories a:focus-visible{background:var(--color-surface-soft);color:var(--color-royal-indigo)}
.program-categories a span{color:var(--color-royal-indigo)}
/* Without the enhancement script, program links remain expanded and usable. */
.site-header:not([data-navigation-ready]){position:relative}
.site-header:not([data-navigation-ready]) .nav{flex-wrap:wrap;padding-block:16px}
.site-header:not([data-navigation-ready]) .site-navigation{flex-basis:100%;flex-wrap:wrap;justify-content:flex-start;margin:0;gap:16px}
.site-header:not([data-navigation-ready]) .nav-links{flex-wrap:wrap;flex-basis:100%;gap:12px}
.site-header:not([data-navigation-ready]) .program-disclosure{flex-basis:100%;order:10}
.program-fallback-label{font-size:16px;font-weight:700;color:var(--color-deep-indigo);display:block;margin-bottom:10px}
/* Uploaded identity retains natural proportions on all layouts. */
.brand:has(.brand-uploaded-logo){flex-wrap:wrap;gap:3px 10px;max-width:250px}
.brand-uploaded-logo{width:auto;height:44px;max-width:180px;object-fit:contain;display:block}
.brand-uploaded-subtitle{font-size:9px;color:var(--color-muted);line-height:1.4;max-width:100%;overflow-wrap:anywhere}
.exam-uploaded-logo{width:80px;height:40px;object-fit:contain;flex-shrink:0;padding:4px;border-radius:8px;background:#fff}
@supports not ((backdrop-filter:blur(12px)) or (-webkit-backdrop-filter:blur(12px))){.site-header{background:white}}
@media(max-width:1240px){.site-header .nav{gap:20px}.site-navigation{gap:20px}.site-header .nav-links{gap:16px}.site-header .nav-actions .btn{padding-inline:14px}.site-header[data-navigation-ready] .program-panel{left:200px}}
@media(max-width:1100px){
  .site-header[data-navigation-ready]{max-height:90dvh;overflow-y:auto}
  .site-header .nav{flex-wrap:wrap;gap:0 16px;min-height:76px;padding-block:14px}
  .site-header[data-navigation-ready] .menu-btn{display:inline-flex}
  .site-header .site-navigation{display:flex;flex-direction:column;flex-basis:100%;margin:14px 0 0;padding:12px 0 0;border-top:1px solid var(--color-line);gap:12px;align-items:stretch}
  .site-header[data-navigation-ready] .site-navigation{display:none}
  .menu-open .site-header[data-navigation-ready] .site-navigation{display:flex}
  .site-header .site-navigation .nav-links{position:static;display:flex;flex-direction:column;align-items:stretch;gap:2px;padding:0;margin:0;border:0;box-shadow:none;background:transparent;max-width:100%;flex-basis:auto}
  .site-header .nav-links>a,.site-header .program-toggle{width:100%;min-height:44px;padding:10px 12px;border-radius:10px;font-size:16px}
  .site-header .program-toggle{justify-content:space-between;text-align:left}
  .site-header .nav-links>a[aria-current=page]{background:var(--color-surface-soft)}
  .site-header .nav-links>a::after,.site-header .program-toggle::after{left:12px;right:12px}
  .site-header .site-navigation .nav-actions{display:flex;flex-wrap:wrap;padding-top:14px;gap:10px;border-top:1px solid var(--color-line);flex-basis:auto}
  .site-header .profile-link{max-width:100%}
  .site-header .program-panel,.site-header[data-navigation-ready] .program-panel{position:static;box-shadow:none;margin:6px 0 12px;padding:18px;gap:20px;border-radius:12px}
  .site-header .program-card{padding:10px 0}
  .program-categories{padding-left:20px}
  .site-header:not([data-navigation-ready]) .nav-links{align-items:stretch}
  .site-header:not([data-navigation-ready]) .program-disclosure{order:0;flex-basis:auto}
  .site-header:not([data-navigation-ready]) .site-navigation{margin-top:14px}
}
@media(max-width:640px){
  .site-header .nav{min-height:72px;padding-block:12px;gap:0 12px}
  .site-header .brand{gap:10px}.site-header .brand-mark{width:40px;height:40px}
  .site-header .brand strong{font-size:12px}.site-header .brand small{font-size:8px;letter-spacing:0}
  .site-header .program-panel{grid-template-columns:minmax(0,1fr);gap:18px;padding:16px}
  .program-categories{border-left:0;border-top:1px solid var(--color-line);padding:16px 0 0}
  .site-header .program-panel h2{margin-bottom:6px}
  .site-header .program-card strong{font-size:15px}.site-header .program-card small{font-size:13px}
  .site-header .program-categories a{padding:10px 8px}
  .brand-uploaded-logo{max-width:150px;height:36px}.brand-uploaded-subtitle{display:none}
  .exam-uploaded-logo{width:58px;height:34px}
}
@media(max-width:359px){.brand-uploaded-logo{max-width:128px}.site-header .brand strong{font-size:11px}.site-header .brand small{font-size:8px}.site-header .program-panel{padding:12px}.site-header .program-card{gap:10px}.program-icon{width:36px;height:36px}}
@media(prefers-reduced-motion:reduce){.site-header *,.site-header *::after{transition:none!important}.site-header .nav-cta:hover{transform:none}}
@media(forced-colors:active){.site-header,.site-header .program-panel{background:Canvas;color:CanvasText;border:1px solid CanvasText}.site-header .program-card,.site-header .program-categories a,.site-header .nav-links>a,.site-header .program-toggle,.site-header .program-card small,.site-header .program-panel h2{color:LinkText}.program-icon{background:Canvas;color:LinkText;border:1px solid LinkText}.site-header .nav-links>a[aria-current=page],.site-header .program-toggle[aria-expanded=true]{border:1px solid LinkText}.menu-icon span{background:ButtonText}}
@media print{.site-header{display:none!important}}