:root{
  --ink:#292B2A;
  --teal:#126180;
  --teal-deep:#0C4358;
  --teal-soft:#E9F1F4;
  --white:#FFFFFF;
  --paper-alt:#F6F8F9;
  --line:#DDE5E8;
  --yellow:#FBCE2B;
  --coral:#E1795C;
  --coral-deep:#B85B41;
  --coral-soft:#FBEAE3;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;font-family:'Inter',sans-serif;color:var(--ink);background:var(--white);line-height:1.6;}
h1,h2,h3,h4{font-family:'Oswald',sans-serif;text-transform:uppercase;margin:0;line-height:1.15;}
p{margin:0 0 1em 0;}
a{color:inherit;}
img{max-width:100%;height:auto;display:block;}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:'Oswald';font-size:12px;letter-spacing:2px;text-transform:uppercase;font-weight:600;color:var(--coral-deep);margin-bottom:14px;}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--coral);display:inline-block;}
.underline-teal{box-shadow:inset 0 -0.3em 0 var(--teal-soft);}
.underline-coral{box-shadow:inset 0 -0.28em 0 var(--coral-soft);}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 28px;border-radius:999px;font-family:'Inter';font-weight:600;font-size:15px;text-decoration:none;cursor:pointer;border:2px solid transparent;transition:transform .15s ease, background .15s ease;}
.btn:hover{transform:translateY(-1px);}
.btn-primary{background:var(--teal);color:var(--white);}
.btn-primary:hover{background:var(--teal-deep);}
.btn-accent{background:var(--coral);color:var(--white);}
.btn-accent:hover{background:var(--coral-deep);}
.btn-ghost{background:transparent;color:var(--teal);border-color:var(--teal);}
.btn-ghost:hover{background:var(--teal-soft);}
.btn-ghost-dark{background:transparent;color:var(--white);border-color:rgba(255,255,255,.5);}
.btn-ghost-dark:hover{background:rgba(255,255,255,.1);border-color:var(--white);}
section{padding:52px 0;}
.section-alt{background:var(--paper-alt);}
.section-head{max-width:640px;margin-bottom:32px;}
.section-head h2{font-size:clamp(26px,3.4vw,36px);}
.section-head p{color:#5b625f;font-size:16px;margin-top:12px;}

/* ACCESSIBILITY */
.skip-link{position:absolute;left:12px;top:-60px;background:var(--teal-deep);color:var(--white);padding:12px 18px;border-radius:8px;z-index:200;font-family:'Inter';font-weight:600;font-size:14px;text-decoration:none;transition:top .15s ease;}
.skip-link:focus{top:12px;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible,.lightbox-trigger:focus-visible{outline:3px solid var(--coral);outline-offset:2px;}

/* HEADER */
header{position:sticky;top:0;background:rgba(255,255,255,.94);backdrop-filter:blur(6px);border-bottom:1px solid var(--line);z-index:50;}
header .wrap{display:flex;align-items:center;justify-content:space-between;padding-top:14px;padding-bottom:14px;}
header a.logo{flex-shrink:0;}
header a.logo img{height:32px;width:auto;}
header .btn{padding:11px 22px;font-size:14px;}

/* HERO */
.hero{padding:64px 0 56px;position:relative;overflow:hidden;background:linear-gradient(180deg,#fff 0%, var(--teal-soft) 130%);}
.hero .wrap{display:grid;grid-template-columns:1.05fr .85fr;gap:56px;align-items:center;}
.hero h1{font-size:clamp(32px,4.6vw,52px);letter-spacing:.5px;}
.hero .sub{font-size:18px;color:#4b524f;margin-top:20px;max-width:520px;}
.fact-block{margin-top:26px;background:var(--coral-soft);border-left:4px solid var(--coral);border-radius:0 12px 12px 0;padding:16px 20px;font-size:15px;max-width:520px;}
.fact-block b{font-family:'Oswald';font-size:17px;}
.cta-row{margin-top:28px;display:flex;gap:14px;flex-wrap:wrap;}
.hero-tagline{font-family:'Oswald';font-size:19px;font-weight:500;color:var(--teal);margin-top:10px;}
.fact-source{display:block;margin-top:6px;font-size:12.5px;color:#7a807d;}
.fact-source a{color:inherit;text-decoration:underline;}
.stat-source{display:block;margin-top:4px;font-size:12px;opacity:.75;}
.stat-source a{color:inherit;text-decoration:underline;}
.callout{background:var(--teal-soft);border-left:4px solid var(--teal);border-radius:0 12px 12px 0;padding:20px 24px;margin-top:8px;}
.callout h3{font-family:'Oswald';font-size:16px;text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px;}
.callout p{font-size:14.5px;color:#3a3f3d;margin-bottom:8px;}
.callout p:last-child{margin-bottom:0;}
.callout .callout-source{font-size:12.5px;color:#6c726f;}
.callout .callout-source a{color:var(--teal);text-decoration:underline;}
.hero-art{position:relative;display:flex;justify-content:center;align-items:center;}
.hero-art .bigcircle{position:absolute;width:420px;height:420px;border-radius:50%;background:var(--teal-soft);z-index:0;}
.hero-art svg{position:relative;z-index:1;}
.hero-photo{position:relative;z-index:1;max-width:380px;margin:0;}
.hero-photo img{border-radius:20px;border:1px solid var(--line);width:100%;height:auto;display:block;box-shadow:0 18px 40px -20px rgba(18,97,128,.35);}
.hero-photo figcaption{margin-top:12px;font-size:13px;color:#6c726f;text-align:center;font-style:italic;}

/* STATS BAR */
.statsbar{background:var(--teal);color:var(--white);padding:44px 0;}
.statsbar .wrap{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;text-align:center;}
.statsbar .num{font-family:'Oswald';font-size:44px;font-weight:700;}
.statsbar .num sup{font-size:16px;top:-1.2em;}
.statsbar .desc{font-size:14px;opacity:.9;margin-top:6px;}

/* DEFINITION */
.def-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;}
.def-quote{position:relative;font-style:italic;border-left:3px solid var(--coral);padding:6px 0 4px 44px;font-size:17px;color:#3a3f3d;}
.def-quote::before{content:"\201C";position:absolute;left:8px;top:-16px;font-family:'Oswald',sans-serif;font-style:normal;font-weight:700;font-size:64px;line-height:1;color:var(--coral);}
.def-quote cite{display:block;margin-top:10px;font-style:normal;font-size:13px;color:#7a807d;}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.chip{background:var(--white);border:1px solid var(--line);border-radius:999px;padding:8px 16px;font-size:13.5px;font-weight:500;}
.scope-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:20px;}
.scope-item{background:var(--paper-alt);border:1px solid var(--line);border-radius:12px;padding:18px 10px;text-align:center;}
.scope-item .icon{display:block;font-size:26px;margin-bottom:8px;}
.scope-item .label{display:block;font-size:12.5px;font-weight:600;color:#3a3f3d;line-height:1.3;}
.scope-item:nth-child(3n+1){background:var(--teal-soft);}
.scope-item:nth-child(3n+2){background:var(--coral-soft);}
.scope-grid-2col{grid-template-columns:repeat(2,1fr);}
.scope-grid-2col .scope-item:nth-child(3n+1){background:var(--paper-alt);}
.scope-grid-2col .scope-item:nth-child(odd){background:var(--teal-soft);}
.scope-grid-2col .scope-item:nth-child(even){background:var(--coral-soft);}
@media (max-width: 560px){.scope-grid{grid-template-columns:repeat(2,1fr);}}

/* CARDS GENERIC */
.cards{display:grid;gap:20px;}
.card{background:var(--white);border:1px solid var(--line);border-radius:14px;padding:24px;}
.card-top4{grid-template-columns:repeat(2,1fr);}
.card-topline{border-top:3px solid var(--coral);}
.card-topline:nth-child(even){border-top-color:var(--teal);}
.card h3,.card h4{font-size:16px;margin-bottom:8px;}
.card p{font-size:14.5px;color:#565c59;margin-bottom:0;}

.benefits-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center;}
.benefits-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px;}

/* TOPIC CARDS */
.topics-grid{grid-template-columns:repeat(2,1fr);}
.topic-card{position:relative;display:flex;flex-direction:column;height:100%;}
.badge{position:absolute;top:-12px;right:20px;background:var(--yellow);color:var(--ink);font-family:'Oswald';font-size:11px;letter-spacing:1px;text-transform:uppercase;font-weight:600;padding:5px 12px;border-radius:999px;}
.topic-card h3{font-size:19px;margin-top:6px;}
.topic-meta{font-size:13px;color:var(--teal);font-weight:600;margin-bottom:10px;}
.topic-card ul{margin:14px 0 0 0;padding-left:18px;font-size:14px;color:#565c59;}
.topic-card li{margin-bottom:6px;}
.lecturer-tag{margin-top:18px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;display:flex;align-items:center;gap:8px;}
.lecturer-tag .dot{width:8px;height:8px;border-radius:50%;background:var(--coral);}

/* QUIZ */
.quiz-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:44px;align-items:start;}
.quiz-visual{width:100%;}
.quiz-box{background:var(--white);border:1px solid var(--line);border-radius:14px;padding:28px;}
.quiz-part{margin-bottom:22px;}
.quiz-part h4{font-family:'Oswald';font-size:14px;text-transform:uppercase;letter-spacing:1px;color:var(--teal);margin-bottom:12px;}
.quiz-item{display:flex;align-items:flex-start;gap:10px;padding:8px 0;font-size:14.5px;border-bottom:1px solid var(--paper-alt);}
.quiz-item input{margin-top:3px;accent-color:var(--coral);width:16px;height:16px;flex-shrink:0;}
#quizResult{margin-top:20px;padding:18px;border-radius:12px;background:var(--teal-soft);font-size:14.5px;display:none;}
#quizResult.show{display:block;}
#quizResult h5{font-family:'Oswald';font-size:15px;margin-bottom:6px;text-transform:none;}
#quizResult a.btn{margin-top:12px;}

/* IMAGE LIGHTBOX TRIGGERS */
.lightbox-trigger{display:block;width:100%;padding:0;margin:0;border:0;background:none;cursor:zoom-in;border-radius:14px;}
.lightbox-trigger img{border-radius:14px;border:1px solid var(--line);}
.lightbox-hint{display:block;margin-top:8px;font-size:12.5px;color:#8a908d;text-align:center;}
.lightbox-overlay{position:fixed;inset:0;background:rgba(12,35,42,.88);display:none;align-items:center;justify-content:center;padding:32px;z-index:300;}
.lightbox-overlay.open{display:flex;}
.lightbox-overlay img{max-width:min(92vw,760px);max-height:88vh;width:auto;border-radius:12px;box-shadow:0 24px 60px rgba(0,0,0,.4);}
.lightbox-close{position:absolute;top:20px;right:24px;background:rgba(255,255,255,.12);color:var(--white);border:1px solid rgba(255,255,255,.4);width:44px;height:44px;border-radius:50%;font-size:22px;line-height:1;cursor:pointer;}
.lightbox-close:hover{background:rgba(255,255,255,.22);}
body.lightbox-locked{overflow:hidden;}

/* FORMATS */
.formats-grid{grid-template-columns:repeat(2,1fr);}
.format-card{position:relative;}
.format-card.featured{border-color:var(--coral);box-shadow:0 0 0 1px var(--coral);}
.format-card .tag{display:inline-block;background:var(--coral-soft);color:var(--coral-deep);font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;margin-bottom:10px;}
.format-card .price{font-family:'Oswald';font-size:15px;color:var(--teal);margin-top:8px;}
.factor-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.price-note{font-size:13.5px;color:#6c726f;margin-top:18px;}

/* LECTURERS */
.lecturer-row{display:flex;gap:20px;padding:24px 0;border-bottom:1px solid var(--line);align-items:flex-start;}
.lecturer-row:last-child{border-bottom:none;}
.lecturer-avatar{width:104px;height:104px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-family:'Oswald';font-size:30px;color:var(--white);font-weight:600;box-sizing:border-box;overflow:hidden;}
.avatar-1{background:var(--teal);padding:3px;}
.avatar-2{background:var(--coral);padding:3px;}
.avatar-3{background:var(--yellow);padding:3px;color:var(--ink);}
.lecturer-avatar img{width:100%;height:100%;border-radius:50%;object-fit:cover;display:block;}
.lecturer-info h3{font-size:19px;margin-bottom:4px;}
.lecturer-badge{display:inline-block;font-size:12.5px;background:var(--paper-alt);border:1px solid var(--line);padding:4px 12px;border-radius:999px;margin-bottom:10px;font-weight:500;}
.lecturer-info p{font-size:14.5px;color:#565c59;margin-bottom:8px;}
.specialties{font-size:13px;color:var(--teal);font-weight:600;}

/* TESTIMONIALS */
.testi-top{display:grid;grid-template-columns:1.2fr .8fr;gap:44px;align-items:center;background:var(--teal-soft);border-radius:16px;padding:36px;margin-bottom:32px;}
.testi-top blockquote{font-family:'Oswald';font-size:20px;font-weight:500;margin:0 0 14px 0;line-height:1.35;}
.testi-top cite{font-style:normal;font-size:14px;color:#4b524f;}
.testi-grid{grid-template-columns:repeat(3,1fr);}
.testi-card blockquote{font-size:14.5px;margin:0 0 12px 0;color:#3a3f3d;}
.testi-card cite{font-style:normal;font-size:12.5px;color:#8a908d;}

/* MATERIALS */
.materials-grid{grid-template-columns:repeat(2,1fr);}
.material-card{display:flex;flex-direction:column;text-decoration:none;color:var(--ink);}
.material-head{display:flex;gap:14px;align-items:flex-start;margin-bottom:10px;}
.material-thumb-mini{width:60px;height:84px;object-fit:cover;border-radius:6px;border:1px solid var(--line);flex-shrink:0;background:var(--paper-alt);}
.material-head .heading-block{padding-top:2px;}
.material-card .tag2{font-size:12px;font-weight:600;color:var(--coral-deep);text-transform:uppercase;letter-spacing:1px;margin-bottom:6px;}
.material-card h4{font-size:18px;margin-bottom:0;}
.material-card .go{margin-top:16px;font-size:13.5px;font-weight:600;color:var(--teal);}

/* FAQ + DARK CTA */
.faq-item{background:var(--white);border:1px solid var(--line);border-radius:12px;margin-bottom:10px;overflow:hidden;}
.faq-item summary{cursor:pointer;list-style:none;padding:16px 20px;font-family:'Oswald';font-size:15px;font-weight:500;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:12px;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-size:20px;color:var(--coral);flex-shrink:0;transition:transform .15s ease;}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item summary:hover{background:var(--paper-alt);}
.faq-item .faq-answer{padding:0 20px 18px;font-size:14.5px;color:#565c59;}
.darkcta{background:var(--teal-deep);color:var(--white);padding:64px 0;text-align:center;}
.darkcta img.logo-yellow{height:34px;width:auto;margin:0 auto 22px;}
.darkcta h2{font-size:clamp(24px,3.4vw,34px);max-width:640px;margin:0 auto;}
.darkcta p{color:rgba(255,255,255,.8);max-width:520px;margin:16px auto 28px;}
.darkcta .cta-row{justify-content:center;}
.darkcta-contact{margin-top:18px;font-size:13.5px;color:rgba(255,255,255,.75);}
.darkcta-contact a{color:var(--white);text-decoration:underline;}

/* SOURCES / VIDEO */
.video-wrap{position:relative;padding-top:56.25%;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:#000;}
.video-wrap iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:0;}
.sources{padding:44px 0;background:var(--paper-alt);}
.sources h3{font-size:14px;text-transform:uppercase;letter-spacing:1px;margin-bottom:14px;color:#6c726f;}
.sources ol{margin:0;padding-left:20px;font-size:13px;color:#6c726f;}
.sources li{margin-bottom:8px;}
.sources a{color:var(--teal);text-decoration:underline;}

footer{background:var(--ink);color:rgba(255,255,255,.7);padding:32px 0;}
footer .wrap{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;}
footer img{height:26px;width:auto;filter:brightness(0) invert(1);}
footer a{font-size:13px;color:rgba(255,255,255,.7);text-decoration:none;}
footer a:hover{text-decoration:underline;}
.footer-contact{display:flex;gap:18px;flex-wrap:wrap;align-items:center;}

@media (max-width: 880px){
  header .header-cta{display:none;}
  section{padding:40px 0;}
  .hero{padding:32px 0 40px;}
  .darkcta{padding:48px 0;}
  .darkcta-contact{margin-top:10px;}
  .hero .wrap{grid-template-columns:1fr;}
  .hero-art .bigcircle{width:280px;height:280px;}
  .statsbar .wrap{grid-template-columns:1fr;gap:24px;}
  .def-grid{grid-template-columns:1fr;}
  .benefits-grid{grid-template-columns:1fr;}
  .benefits-cards{grid-template-columns:1fr;}
  .topics-grid{grid-template-columns:1fr;}
  .quiz-wrap{grid-template-columns:1fr;}
  .formats-grid{grid-template-columns:1fr;}
  .testi-top{grid-template-columns:1fr;}
  .testi-grid{grid-template-columns:1fr;}
  .materials-grid{grid-template-columns:1fr;}
  footer .wrap{flex-direction:column;text-align:center;}
}