/* ===== Tokens ===== */
:root{
  --ink:#0A0C0F;
  --ink-soft:#15181D;
  --ink-line:rgba(255,255,255,.14);
  --paper:#F7F4EE;
  --paper-card:#FFFFFF;
  --paper-line:#E6E1D3;
  --slate:#4B5361;
  --slate-soft:#6B7280;
  --teal:#2FC9B8;
  --amber:#FF7A45;
  --white:#FFFFFF;

  --font-display:'Bricolage Grotesque','Outfit',sans-serif;
  --font-body:'Inter Tight','Inter',sans-serif;
  --font-accent:'Instrument Serif',serif;
  --font-mono:'DM Mono',ui-monospace,monospace;

  --container:1240px;
  --pad:clamp(1.25rem,4vw,3rem);
  --section-pad:clamp(5rem,12vw,9rem);
  --radius:20px;
  --ease:cubic-bezier(.16,.84,.44,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
}
body{
  margin:0;
  font-family:var(--font-body);
  background:var(--paper);
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
  font-size:clamp(16px,.9vw + 12px,18px);
}
img,svg{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
h1,h2,h3{
  font-family:var(--font-display);margin:0;line-height:1.02;
  letter-spacing:-.035em;font-variation-settings:'opsz' 72;
  font-weight:800;
}
p{margin:0;}
ul,ol{list-style:none;margin:0;padding:0;}
button{font:inherit;}

.skip-link{
  position:absolute;left:-999px;top:auto;background:var(--ink);color:var(--white);
  padding:.75rem 1.25rem;border-radius:999px;z-index:999;
}
.skip-link:focus{left:1rem;top:1rem;}

:focus-visible{outline:2.5px solid var(--teal);outline-offset:3px;border-radius:4px;}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.9rem 1.6rem;
  border-radius:999px;
  font-family:var(--font-body);
  font-weight:600;
  font-size:.95rem;
  cursor:pointer;
  border:1px solid transparent;
  transition:transform .25s var(--ease),background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
  min-height:44px;
  white-space:nowrap;
}
.btn--primary{background:var(--amber);color:var(--ink);}
.btn--primary:hover{transform:translateY(-2px);background:#ff8a5f;}
.btn--ghost{background:transparent;color:currentColor;border-color:currentColor;opacity:.85;}
.btn--ghost:hover{opacity:1;transform:translateY(-2px);}
.btn--outline{background:transparent;color:var(--ink);border-color:var(--paper-line);}
.btn--outline:hover{border-color:var(--ink);transform:translateY(-2px);}
.btn--sm{padding:.65rem 1.25rem;font-size:.85rem;}
.btn--lg{padding:1.1rem 2.1rem;font-size:1.05rem;}

/* ===== Nav ===== */
.nav{
  position:fixed;top:1rem;left:1rem;right:1rem;
  z-index:100;
  display:flex;justify-content:center;
}
.nav__inner{
  width:100%;max-width:var(--container);
  display:flex;align-items:center;justify-content:space-between;gap:1.5rem;
  background:rgba(10,12,15,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  color:var(--white);
  border:1px solid var(--ink-line);
  border-radius:999px;
  padding:.6rem .6rem .6rem 1.2rem;
}
.nav__brand{display:flex;align-items:center;gap:.55rem;font-family:var(--font-display);font-weight:700;font-size:1rem;letter-spacing:-.01em;}
.nav__mark{width:22px;height:22px;color:var(--teal);}
.nav__links{display:flex;gap:1.75rem;font-size:.9rem;opacity:.85;}
.nav__links a{transition:opacity .2s;}
.nav__links a:hover{opacity:1;}
.nav .btn--primary{padding:.65rem 1.3rem;font-size:.85rem;}
.nav__toggle{display:none;flex-direction:column;gap:4px;background:none;border:none;padding:.6rem;cursor:pointer;}
.nav__toggle span{width:20px;height:2px;background:var(--white);border-radius:2px;}
.nav__mobile{
  display:none;flex-direction:column;gap:1rem;
  background:rgba(10,12,15,.96);color:var(--white);
  border:1px solid var(--ink-line);border-radius:20px;
  margin-top:.6rem;padding:1.25rem 1.5rem;max-width:var(--container);
}
.nav__mobile.is-open{display:flex;}
.nav__mobile a{padding:.4rem 0;font-size:1rem;}

@media (max-width:860px){
  .nav__links{display:none;}
  .nav > .btn--primary{display:none;}
  .nav__toggle{display:flex;}
}

/* ===== Section shell ===== */
.section{padding:var(--section-pad) var(--pad);}
.section--light{background:var(--paper);}
.section--dark{background:var(--ink);color:var(--white);position:relative;overflow:hidden;}
.section__head{max-width:760px;margin:0 auto clamp(2.5rem,6vw,4.5rem);text-align:left;}
.section__head h2{font-size:clamp(1.9rem,3.6vw,3rem);}
.eyebrow{
  display:inline-block;font-family:var(--font-body);font-weight:600;font-size:.78rem;
  letter-spacing:.14em;color:var(--amber);margin-bottom:1rem;
}
.eyebrow--light{color:var(--teal);}
.chip{
  display:inline-flex;align-items:center;justify-content:center;
  width:2.4rem;height:2.4rem;border-radius:50%;
  background:var(--ink);color:var(--white);
  font-family:var(--font-display);font-weight:700;font-size:.85rem;margin-bottom:1.25rem;
}

/* ===== Hero ===== */
.hero{
  position:relative;
  min-height:100svh;
  background:var(--ink) url('assets/hero-poster.webp') center/cover no-repeat;
  color:var(--white);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  padding:clamp(6.5rem,14vh,9rem) var(--pad) clamp(2.5rem,6vh,4rem);
}
.hero__field{position:absolute;inset:0;z-index:0;}
.hero__video-wrap{position:absolute;inset:0;overflow:hidden;}
.hero__video-layer{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;object-position:center;
  opacity:0;
  filter:saturate(1.05);
  transition:opacity .9s ease;
}
.hero__video-layer.is-active{opacity:1;}
.hero__scrim{
  position:absolute;inset:0;
  /* Left-weighted so the headline and body copy always clear contrast,
     while the right side of the artwork stays visible. */
  background:
    linear-gradient(100deg,rgba(10,12,15,.92) 0%,rgba(10,12,15,.8) 28%,rgba(10,12,15,.42) 52%,rgba(10,12,15,.05) 78%),
    linear-gradient(0deg,rgba(10,12,15,.7) 0%,rgba(10,12,15,0) 34%);
}
@media (prefers-reduced-motion: reduce){
  .hero__video-wrap{display:none;}
}
.hero__grid{
  position:absolute;inset:0;
  background-image:linear-gradient(var(--ink-line) 1px,transparent 1px),linear-gradient(90deg,var(--ink-line) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.25;
  mask-image:radial-gradient(ellipse 80% 60% at 30% 20%,#000 40%,transparent 85%);
}
.orb{
  position:absolute;border-radius:50%;filter:blur(70px);opacity:.55;
  animation:drift 22s ease-in-out infinite;
}
.orb--a{width:46vw;height:46vw;max-width:640px;max-height:640px;background:radial-gradient(circle,var(--teal),transparent 70%);top:-14%;left:-8%;animation-duration:26s;}
.orb--b{width:34vw;height:34vw;max-width:480px;max-height:480px;background:radial-gradient(circle,var(--amber),transparent 70%);bottom:-10%;right:-6%;animation-duration:30s;animation-delay:-6s;}
.orb--c{width:22vw;height:22vw;max-width:340px;max-height:340px;background:radial-gradient(circle,#9B8FFF,transparent 70%);top:35%;right:20%;opacity:.35;animation-duration:34s;animation-delay:-14s;}
.orb--d{width:38vw;height:38vw;max-width:520px;max-height:520px;background:radial-gradient(circle,var(--teal),transparent 70%);top:10%;left:50%;transform:translateX(-50%);opacity:.28;animation-duration:28s;}
.orb--cta{opacity:.4;}
@keyframes drift{
  0%,100%{transform:translate(0,0) scale(1);}
  50%{transform:translate(3%,-4%) scale(1.08);}
}

.hero__eyebrow{
  position:relative;z-index:1;
  font-family:var(--font-body);font-weight:600;font-size:.78rem;
  letter-spacing:.16em;color:var(--teal);
}

.hero__title{
  position:relative;z-index:1;
  font-size:clamp(2.6rem,7.4vw,6.4rem);
  font-weight:800;
  
  margin:1.25rem 0 0;
}
.hero__title .line{display:block;}
.hero__title--accent{color:var(--teal);}
.hero__title .char{
  display:inline-block;
  opacity:.16;
  transform:translateY(.15em);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
.hero__title.is-revealed .char{opacity:1;transform:translateY(0);}

.hero__foot{
  position:relative;z-index:1;
  display:flex;justify-content:space-between;align-items:flex-end;gap:2rem;flex-wrap:wrap;
  margin-top:clamp(2rem,6vh,4rem);
}
.hero__copy{max-width:460px;}
.hero__copy p{font-size:1.05rem;color:rgba(255,255,255,.78);}
.hero__actions{display:flex;gap:.9rem;flex-wrap:wrap;margin-top:1.5rem;}

.hero__badges{display:flex;flex-direction:column;gap:.9rem;align-items:flex-end;text-align:right;}
.hero__badges li{display:flex;align-items:center;gap:.6rem;font-size:.88rem;color:rgba(255,255,255,.8);font-weight:500;}
.hero__badges .icon{color:var(--teal);}

.hero__tag{
  position:absolute;z-index:1;top:clamp(6.5rem,14vh,9rem);right:var(--pad);
  font-family:var(--font-accent);font-style:italic;font-size:1.05rem;color:rgba(255,255,255,.55);
}

.icon{display:inline-flex;width:20px;height:20px;flex-shrink:0;}
.icon--lg{width:34px;height:34px;color:var(--amber);margin-bottom:1.1rem;}

@media (max-width:640px){
  .hero{min-height:auto;padding-top:7.5rem;padding-bottom:3rem;}
  .hero__foot{flex-direction:column;align-items:flex-start;}
  .hero__badges{align-items:flex-start;text-align:left;}
  .hero__tag{display:none;}
}

/* ===== Dividers ===== */
.divider{line-height:0;margin-top:-1px;color:var(--paper);}
.divider--dark-to-light{color:var(--paper);}
.divider svg{width:100%;height:clamp(48px,8vw,110px);}
.divider path{fill:currentColor;}
.section--dark + .divider{color:var(--paper);}
.divider + .section--dark{margin-top:-1px;}

/* the divider right after the hero sits on the light section that follows it, filled with paper color, so it visually "cuts" the black hero */
.hero + .divider path{fill:var(--paper);}
.divider--dark-to-light path{fill:var(--paper);}
.divider--up path{fill:var(--ink);}

/* ===== Chess layout ===== */
.chess{
  max-width:var(--container);margin:0 auto;
  display:flex;align-items:center;gap:clamp(2.5rem,6vw,5rem);
  padding:clamp(2.5rem,5vw,4rem) 0;
}
.chess--reverse{flex-direction:row-reverse;}
.chess__media,.chess__text{flex:1 1 0;min-width:0;}
.chess__text h2{font-size:clamp(1.7rem,3.2vw,2.6rem);margin-bottom:1.1rem;}
.chess__text h3{font-size:clamp(1.4rem,2.4vw,1.9rem);margin-bottom:.9rem;}
.chess__text p{color:var(--slate);font-size:1.02rem;margin-bottom:1.6rem;max-width:480px;}

.visual-card{
  position:relative;
  aspect-ratio:4/3;
  border-radius:var(--radius);
  background:linear-gradient(150deg,#101418,#1B2027 60%,#101418);
  display:flex;align-items:center;justify-content:center;
  overflow:hidden;
  transform-style:preserve-3d;
  transition:transform .35s ease-out;
  will-change:transform;
}
.visual-card::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(circle at 30% 20%,rgba(47,201,184,.35),transparent 55%),radial-gradient(circle at 75% 80%,rgba(255,122,69,.28),transparent 55%);
}
.visual-card__glow{
  position:relative;width:34%;color:var(--white);opacity:.92;
  filter:drop-shadow(0 0 18px rgba(47,201,184,.35));
}
.visual-card img{
  position:relative;width:100%;height:100%;object-fit:cover;
}
.visual-card--a::before{background:radial-gradient(circle at 25% 25%,rgba(47,201,184,.4),transparent 55%),radial-gradient(circle at 80% 75%,rgba(155,143,255,.28),transparent 55%);}
.visual-card--b::before{background:radial-gradient(circle at 75% 25%,rgba(255,122,69,.35),transparent 55%),radial-gradient(circle at 20% 80%,rgba(47,201,184,.28),transparent 55%);}
.visual-card--c::before{background:radial-gradient(circle at 50% 15%,rgba(155,143,255,.32),transparent 55%),radial-gradient(circle at 20% 85%,rgba(255,122,69,.24),transparent 55%);}

@media (max-width:820px){
  .chess,.chess--reverse{flex-direction:column;align-items:stretch;gap:1.75rem;}
  .chess__text p{max-width:none;}
}

/* ===== Steps ===== */
.steps{
  max-width:var(--container);margin:0 auto;
  display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(1.5rem,4vw,3rem);
  position:relative;
}
.step{
  background:var(--paper-card);
  border:1px solid var(--paper-line);
  border-radius:var(--radius);
  padding:clamp(1.75rem,3vw,2.25rem);
}
.step__num{
  display:block;font-family:var(--font-accent);font-style:italic;color:var(--slate-soft);
  font-size:1.4rem;margin-bottom:1rem;
}
.step h3{font-size:1.2rem;margin-bottom:.6rem;}
.step p{color:var(--slate);font-size:.98rem;}

@media (max-width:820px){
  .steps{grid-template-columns:1fr;}
}

/* ===== Story ===== */
.story{position:relative;z-index:1;max-width:820px;margin:0 auto;text-align:left;}
.story__title{font-size:clamp(2rem,4.4vw,3.4rem);margin:0 0 1.5rem;}
.story__body{font-size:clamp(1.05rem,1.6vw,1.25rem);color:rgba(255,255,255,.75);max-width:640px;}

/* ===== Approach tiles ===== */
.grid-4{
  max-width:var(--container);margin:0 auto;
  display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(1.25rem,3vw,2rem);
}
.tile{
  background:var(--paper-card);border:1px solid var(--paper-line);border-radius:var(--radius);
  padding:clamp(1.6rem,2.6vw,2rem);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.tile:hover{transform:translateY(-4px);box-shadow:0 18px 40px -18px rgba(10,12,15,.25);}
.tile h3{font-size:1.08rem;margin-bottom:.6rem;}
.tile p{font-size:.94rem;color:var(--slate);}

@media (max-width:960px){.grid-4{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.grid-4{grid-template-columns:1fr;}}

/* ===== Trust strip ===== */
.trust{background:var(--paper);border-top:1px solid var(--paper-line);border-bottom:1px solid var(--paper-line);padding:2.25rem var(--pad);}
.trust__list{
  max-width:var(--container);margin:0 auto;
  display:flex;flex-wrap:wrap;gap:1.5rem 2.5rem;justify-content:center;
  font-family:var(--font-display);font-weight:600;font-size:.85rem;letter-spacing:.03em;
  color:var(--slate);
}

/* ===== Final CTA ===== */
.cta{
  position:relative;overflow:hidden;
  background:var(--ink);color:var(--white);
  text-align:left;
  padding:clamp(5rem,14vw,10rem) var(--pad);
}
.cta__title{font-size:clamp(2.2rem,5.5vw,4.2rem);margin:0 0 1.25rem;position:relative;z-index:1;}
.cta__body{position:relative;z-index:1;color:rgba(255,255,255,.72);font-size:1.1rem;max-width:480px;margin-bottom:2rem;}
.cta .hero__actions{position:relative;z-index:1;}

/* ===== Footer ===== */
.footer{background:var(--ink);color:rgba(255,255,255,.75);padding:2.5rem var(--pad) 3rem;}
.footer__inner{
  max-width:var(--container);margin:0 auto;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1.5rem;
  border-top:1px solid var(--ink-line);padding-top:2rem;
}
.footer .nav__brand{color:var(--white);}
.footer__links{display:flex;gap:1.5rem;font-size:.9rem;flex-wrap:wrap;}
.footer__links a:hover{color:var(--teal);}
.footer__meta{font-size:.82rem;color:rgba(255,255,255,.5);width:100%;order:3;}

/* ===== Reading progress ===== */
.progress{position:fixed;top:0;left:0;right:0;height:3px;z-index:120;background:transparent;pointer-events:none;}
.progress__bar{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--teal),var(--amber));transition:width .12s linear;}

/* ===== Page hero (interior pages) ===== */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--ink);color:var(--white);
  padding:clamp(8rem,18vh,11rem) var(--pad) clamp(4rem,8vh,6rem);
}
.page-hero__title{
  position:relative;z-index:1;
  font-size:clamp(2.2rem,6.4vw,5rem);font-weight:800;
  margin:1.25rem 0 1.5rem;
}
.page-hero__accent{color:var(--teal);}
.page-hero__body{
  position:relative;z-index:1;
  max-width:620px;font-size:1.08rem;color:rgba(255,255,255,.78);
}
.stat-row{
  position:relative;z-index:1;
  display:flex;flex-wrap:wrap;gap:2.5rem;margin-top:clamp(2.5rem,6vh,4rem);
}
.stat-row li{display:flex;flex-direction:column;gap:.35rem;}
.stat-row__num{font-family:var(--font-display);font-weight:800;font-size:clamp(1.6rem,3vw,2.3rem);color:var(--teal);line-height:1;}
.stat-row__unit{font-size:.5em;font-weight:600;margin-left:.1em;}
.stat-row__label{font-size:.78rem;letter-spacing:.12em;color:rgba(255,255,255,.6);}

/* ===== Notice / callout ===== */
.notice{
  max-width:var(--container);margin:0 auto;
  display:flex;gap:1.5rem;align-items:flex-start;
  background:var(--paper-card);border:1px solid var(--paper-line);
  border-left:4px solid var(--teal);
  border-radius:var(--radius);padding:clamp(1.5rem,3vw,2.25rem);
}
.notice__icon{width:26px;height:26px;flex-shrink:0;color:var(--teal);margin-top:.15rem;}
.notice__title{font-size:1.2rem;margin-bottom:.6rem;}
.notice p{color:var(--slate);font-size:.98rem;}
.notice p + p{margin-top:.75rem;}

.callout{
  max-width:var(--container);margin:clamp(2rem,4vw,3rem) auto 0;
  background:rgba(47,201,184,.08);border:1px solid rgba(47,201,184,.3);
  border-radius:14px;padding:1.25rem 1.5rem;
}
.callout p{font-size:.95rem;color:var(--slate);}
.callout--amber{background:rgba(255,122,69,.08);border-color:rgba(255,122,69,.32);}
.callout--dark{background:rgba(255,255,255,.05);border-color:var(--ink-line);margin-top:2rem;}
.callout--dark p{color:rgba(255,255,255,.75);}

.section__lede{margin-top:1rem;color:var(--slate);font-size:1.02rem;max-width:620px;}

/* ===== Timeline ===== */
.timeline{max-width:var(--container);margin:0 auto;position:relative;}
.timeline__track{
  position:absolute;top:1.15rem;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--teal),var(--amber));opacity:.35;
}
.timeline__list{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;}
.timeline__item{position:relative;padding-top:3rem;}
.timeline__dot{
  position:absolute;top:.5rem;left:0;width:1.35rem;height:1.35rem;border-radius:50%;
  background:var(--paper);border:3px solid var(--teal);
}
.timeline__when{
  display:block;font-family:var(--font-display);font-weight:700;font-size:.8rem;
  letter-spacing:.08em;color:var(--amber);margin-bottom:.5rem;
}
.timeline__item h3{font-size:1.1rem;margin-bottom:.4rem;}
.timeline__item p{font-size:.92rem;color:var(--slate);margin-bottom:.75rem;}
.timeline__courses{
  display:inline-block;font-size:.78rem;font-weight:600;
  background:var(--paper-card);border:1px solid var(--paper-line);
  border-radius:999px;padding:.3rem .7rem;color:var(--slate);
}
@media (max-width:860px){
  .timeline__list{grid-template-columns:1fr;}
  .timeline__track{top:0;bottom:0;left:.65rem;right:auto;width:2px;height:auto;background:linear-gradient(180deg,var(--teal),var(--amber));}
  .timeline__item{padding-top:0;padding-left:2.5rem;padding-bottom:1.5rem;}
  .timeline__dot{top:.15rem;}
}

/* ===== Course grid ===== */
.course-grid{
  max-width:var(--container);margin:0 auto;
  display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));
  gap:clamp(1.25rem,2.5vw,2rem);
}
.course-card{
  display:flex;flex-direction:column;
  background:var(--paper-card);border:1px solid var(--paper-line);
  border-radius:var(--radius);overflow:hidden;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
a.course-card{cursor:pointer;}
a.course-card:hover{transform:translateY(-5px);box-shadow:0 22px 50px -22px rgba(10,12,15,.3);border-color:var(--teal);}
.course-card--flagship{grid-column:span 2;border-color:rgba(47,201,184,.5);}
.course-card--accent{border-color:rgba(255,122,69,.4);}
.course-card__media{aspect-ratio:21/9;overflow:hidden;background:var(--ink);}
.course-card__media img{width:100%;height:100%;object-fit:cover;}
.course-card__body{padding:clamp(1.5rem,2.6vw,2rem);display:flex;flex-direction:column;flex:1;}
.course-card__meta{display:flex;align-items:center;gap:.75rem;margin-bottom:1rem;flex-wrap:wrap;}
.course-card__num{
  font-family:var(--font-display);font-weight:700;font-size:.78rem;
  letter-spacing:.1em;color:var(--slate-soft);
}
.tag{
  font-size:.72rem;font-weight:600;letter-spacing:.06em;
  padding:.28rem .6rem;border-radius:999px;
  background:var(--paper);border:1px solid var(--paper-line);color:var(--slate);
}
.tag--flagship{background:rgba(47,201,184,.14);border-color:rgba(47,201,184,.45);color:#0d7d70;}
.tag--warn{background:rgba(255,122,69,.14);border-color:rgba(255,122,69,.45);color:#b8461d;}
.course-card h3{font-size:clamp(1.15rem,1.9vw,1.5rem);margin-bottom:.7rem;}
.course-card > .course-card__body > p{color:var(--slate);font-size:.96rem;margin-bottom:1.1rem;}
.course-card__scope{
  background:rgba(255,122,69,.09);border:1px solid rgba(255,122,69,.32);
  border-radius:10px;padding:.75rem .9rem;font-size:.86rem;color:var(--slate);margin-bottom:1.1rem;
}
.course-card__lessons{
  display:flex;flex-direction:column;gap:.4rem;margin-bottom:1.25rem;
  font-size:.9rem;color:var(--slate);
}
.course-card__lessons li{padding-left:1.1rem;position:relative;}
.course-card__lessons li::before{
  content:'';position:absolute;left:0;top:.55em;width:5px;height:5px;border-radius:50%;background:var(--teal);
}
.course-card__facts{
  display:flex;gap:1.25rem;flex-wrap:wrap;margin-top:auto;
  padding-top:1rem;border-top:1px solid var(--paper-line);
  font-size:.82rem;font-weight:600;letter-spacing:.04em;color:var(--slate-soft);
}
.course-card__cta{
  margin-top:1rem;font-weight:600;font-size:.92rem;color:var(--ink);
  display:inline-flex;gap:.4rem;align-items:center;
}
a.course-card:hover .course-card__cta{color:#0d7d70;}
@media (max-width:900px){.course-card--flagship{grid-column:span 1;}}

/* ===== Course hero ===== */
.course-hero{
  position:relative;overflow:hidden;
  background:var(--ink);color:var(--white);
  padding:clamp(8rem,18vh,11rem) var(--pad) clamp(3.5rem,7vh,5rem);
}
.course-hero__media{position:absolute;inset:0;z-index:0;}
.course-hero__media img{width:100%;height:100%;object-fit:cover;}
.course-hero__scrim{
  position:absolute;inset:0;
  background:linear-gradient(95deg,rgba(10,12,15,.9) 0%,rgba(10,12,15,.65) 45%,rgba(10,12,15,.3) 100%);
}
.crumb{position:relative;z-index:1;font-size:.85rem;color:rgba(255,255,255,.6);margin-bottom:1.25rem;}
.crumb a{color:var(--teal);}
.crumb a:hover{text-decoration:underline;}
.crumb span{margin:0 .35rem;}
.course-hero .tag{position:relative;z-index:1;display:inline-block;background:rgba(47,201,184,.18);border-color:rgba(47,201,184,.5);color:var(--teal);}
.course-hero__title{
  position:relative;z-index:1;
  font-size:clamp(2rem,6vw,4.6rem);font-weight:800;
  margin:1.25rem 0 1.5rem;
}
.course-hero__title .line{display:block;}
.course-hero__accent{color:var(--teal);}
.course-hero__title .char{
  display:inline-block;opacity:.16;transform:translateY(.15em);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
.course-hero__title.is-revealed .char{opacity:1;transform:translateY(0);}
.course-hero__lede{position:relative;z-index:1;max-width:640px;font-size:1.08rem;color:rgba(255,255,255,.8);}
.course-hero__facts{
  position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:2rem;margin-top:2.5rem;
}
.course-hero__facts li{font-size:.8rem;letter-spacing:.1em;color:rgba(255,255,255,.6);display:flex;flex-direction:column;gap:.25rem;}
.course-hero__facts span{font-family:var(--font-display);font-weight:800;font-size:1.6rem;letter-spacing:-.01em;text-transform:none;color:var(--teal);}

/* ===== Two column ===== */
.two-col{
  max-width:var(--container);margin:0 auto;
  display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,5vw,4rem);align-items:start;
}
.two-col h2{font-size:clamp(1.6rem,3vw,2.4rem);}
@media (max-width:860px){.two-col{grid-template-columns:1fr;}}

.tick-list{display:flex;flex-direction:column;gap:.9rem;}
.tick-list li{
  position:relative;padding-left:2rem;color:var(--slate);font-size:1rem;
}
.tick-list li::before{
  content:'';position:absolute;left:0;top:.35em;width:1.1rem;height:1.1rem;border-radius:50%;
  background:rgba(47,201,184,.16);border:1px solid rgba(47,201,184,.5);
}
.tick-list li::after{
  content:'';position:absolute;left:.32rem;top:.62em;width:.42rem;height:.22rem;
  border-left:2px solid #0d7d70;border-bottom:2px solid #0d7d70;transform:rotate(-45deg);
}
.tick-list--plain li{font-size:.94rem;}

/* ===== Regulation map ===== */
.reg-map{
  max-width:var(--container);margin:0 auto;
  display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.25rem;
}
.reg-map__item{
  background:var(--paper-card);border:1px solid var(--paper-line);
  border-radius:var(--radius);padding:1.5rem;
}
.reg-map__item--on{border-color:rgba(47,201,184,.5);background:rgba(47,201,184,.05);}
.reg-map__reg{
  display:inline-block;font-family:var(--font-display);font-weight:700;font-size:.75rem;
  letter-spacing:.08em;color:var(--amber);margin-bottom:.6rem;
}
.reg-map__item h3{font-size:1.05rem;margin-bottom:.5rem;}
.reg-map__item p{font-size:.9rem;color:var(--slate);}

/* ===== Lessons ===== */
.lesson{
  max-width:var(--container);margin:0 auto clamp(2rem,4vw,3rem);
  background:var(--paper-card);border:1px solid var(--paper-line);
  border-radius:var(--radius);overflow:hidden;
}
.lesson__head{
  display:flex;gap:1.25rem;align-items:flex-start;
  padding:clamp(1.5rem,3vw,2rem) clamp(1.5rem,3vw,2.25rem);
  border-bottom:1px solid var(--paper-line);
  background:linear-gradient(100deg,rgba(47,201,184,.06),transparent 60%);
}
.lesson__num{
  font-family:var(--font-display);font-weight:800;font-size:1.15rem;
  color:var(--teal);background:rgba(47,201,184,.12);
  border:1px solid rgba(47,201,184,.35);border-radius:10px;
  padding:.45rem .7rem;flex-shrink:0;
}
.lesson__head h3{font-size:clamp(1.15rem,2.2vw,1.6rem);margin-bottom:.4rem;}
.lesson__time{font-size:.82rem;letter-spacing:.06em;color:var(--slate-soft);font-weight:600;}
.lesson__body{
  display:grid;grid-template-columns:1.35fr 1fr;gap:clamp(1.5rem,3vw,2.5rem);
  padding:clamp(1.5rem,3vw,2.25rem);align-items:start;
}
.lesson__body--wide{grid-template-columns:1fr;}
.lesson__intro{
  font-family:var(--font-accent);font-size:clamp(1.1rem,1.8vw,1.35rem);
  line-height:1.45;color:var(--ink);margin-bottom:1.5rem;
}
.lesson__text h4{
  font-family:var(--font-display);font-size:.82rem;font-weight:700;
  letter-spacing:.12em;color:var(--slate-soft);
  margin:0 0 .9rem;
}
.lesson__text ul{display:flex;flex-direction:column;gap:.7rem;margin-bottom:1.5rem;}
.lesson__text ul li{
  position:relative;padding-left:1.2rem;font-size:.97rem;color:var(--slate);
}
.lesson__text ul li::before{
  content:'';position:absolute;left:0;top:.6em;width:5px;height:5px;border-radius:50%;background:var(--amber);
}
.lesson__key{
  background:rgba(47,201,184,.08);border-left:3px solid var(--teal);
  border-radius:0 10px 10px 0;padding:1rem 1.25rem;font-size:.95rem;color:var(--slate);
}
.lesson__key--warn{background:rgba(255,122,69,.08);border-left-color:var(--amber);}
.lesson__figure{margin:0;}
.lesson__figure img{width:100%;border-radius:14px;border:1px solid var(--paper-line);}
.lesson__figure figcaption{
  margin-top:.75rem;font-size:.84rem;color:var(--slate-soft);
  font-family:var(--font-accent);font-style:italic;
}
.lesson__figure--diagram svg{
  width:100%;height:auto;background:var(--ink);
  border-radius:14px;border:1px solid var(--paper-line);padding:.5rem;
}
.lesson__figure--inline{margin-top:1.5rem;max-width:420px;}
@media (max-width:860px){
  .lesson__body{grid-template-columns:1fr;}
}

/* ===== SVG diagram theming ===== */
.dg-box--neutral{fill:rgba(255,255,255,.07);stroke:rgba(255,255,255,.25);}
.dg-box--warn{fill:rgba(255,122,69,.12);stroke:rgba(255,122,69,.5);}
.dg-box--good{fill:rgba(47,201,184,.12);stroke:rgba(47,201,184,.5);}
.dg-t{font-family:'Inter',sans-serif;font-size:9.5px;fill:rgba(255,255,255,.72);}
.dg-t--sm{font-size:11px;fill:#fff;}
.dg-t--b{font-size:11px;font-weight:700;fill:#fff;letter-spacing:.05em;}
.dg-t--i{font-style:italic;fill:rgba(255,255,255,.55);}
.dg-line{stroke-width:1.6;fill:none;}
.dg-line--warn{stroke:rgba(255,122,69,.75);}
.dg-line--good{stroke:rgba(47,201,184,.8);}
.dg-line--dash{stroke-dasharray:4 4;}
.dg-head--warn{fill:rgba(255,122,69,.85);}
.dg-head--good{fill:rgba(47,201,184,.9);}

.wot-zone--hyper{fill:rgba(255,122,69,.13);stroke:rgba(255,122,69,.4);}
.wot-zone--window{fill:rgba(47,201,184,.15);stroke:rgba(47,201,184,.55);}
.wot-zone--hypo{fill:rgba(120,130,150,.13);stroke:rgba(150,160,180,.35);}
.wot-trace{fill:none;stroke:#fff;stroke-width:2;stroke-dasharray:3 5;opacity:.5;}
.wot-dot{fill:var(--amber);filter:drop-shadow(0 0 6px rgba(255,122,69,.9));}
@media (prefers-reduced-motion: reduce){
  .wot-dot animateMotion{display:none;}
}

/* ===== Function grid ===== */
.fn-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-top:.5rem;
}
.fn-grid__item{
  background:var(--paper);border:1px solid var(--paper-line);border-radius:12px;padding:1.1rem;
}
.fn-grid__label{
  display:block;font-family:var(--font-display);font-weight:700;font-size:.95rem;
  color:var(--ink);margin-bottom:.45rem;
}
.fn-grid__item p{font-size:.88rem;color:var(--slate);margin-bottom:.7rem;}
.fn-grid__try{
  display:block;font-size:.84rem;color:#0d7d70;font-weight:600;
  padding-top:.6rem;border-top:1px solid var(--paper-line);
}

/* ===== PACE grid ===== */
.pace-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:1rem;margin:1.5rem 0;
}
.pace-grid__item{
  background:var(--paper);border:1px solid var(--paper-line);border-radius:14px;padding:1.25rem;
  transition:transform .3s var(--ease),border-color .3s var(--ease);
}
.pace-grid__item:hover{transform:translateY(-3px);border-color:var(--teal);}
.pace-grid__letter{
  display:inline-flex;align-items:center;justify-content:center;
  width:2.4rem;height:2.4rem;border-radius:12px;margin-bottom:.8rem;
  font-family:var(--font-display);font-weight:800;font-size:1.2rem;
  background:var(--ink);color:var(--teal);
}
.pace-grid__item h4{
  font-family:var(--font-display);font-size:1.02rem;font-weight:700;
  letter-spacing:normal;text-transform:none;color:var(--ink);margin-bottom:.5rem;
}
.pace-grid__item p{font-size:.88rem;color:var(--slate);margin-bottom:.8rem;}
.pace-grid__eg{
  display:block;font-family:var(--font-accent);font-style:italic;font-size:.95rem;
  color:var(--ink);padding-top:.7rem;border-top:1px solid var(--paper-line);
}

/* ===== Scenario ===== */
.scenario{position:relative;z-index:1;max-width:var(--container);margin:0 auto;}
.scenario__setup{
  font-family:var(--font-accent);font-size:clamp(1.15rem,2vw,1.5rem);line-height:1.5;
  color:rgba(255,255,255,.88);max-width:720px;margin-bottom:clamp(2.5rem,5vw,3.5rem);
}
.scenario__steps{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.25rem;
}
.scenario__step{
  background:rgba(255,255,255,.045);border:1px solid var(--ink-line);
  border-radius:14px;padding:1.4rem;
}
.scenario__num{
  display:block;font-family:var(--font-display);font-weight:800;font-size:.85rem;
  color:var(--teal);letter-spacing:.1em;margin-bottom:.7rem;
}
.scenario__step h3{font-size:1.02rem;margin-bottom:.5rem;}
.scenario__step p{font-size:.9rem;color:rgba(255,255,255,.7);}
.scenario__step em{color:var(--teal);font-style:normal;font-size:.85rem;}

/* ===== Source list ===== */
.source-list{display:flex;flex-direction:column;gap:.7rem;margin-top:1.75rem;}
.source-list li{
  position:relative;padding-left:1.2rem;font-size:.94rem;color:rgba(255,255,255,.7);
}
.source-list li::before{
  content:'';position:absolute;left:0;top:.6em;width:5px;height:5px;border-radius:50%;background:var(--teal);
}
.review-note{margin-top:1.5rem;font-size:.9rem;color:var(--slate);}

/* ===== Reveal-on-scroll ===== */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease),transform .7s var(--ease);}
.reveal.is-visible{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;}
  .hero__title .char{opacity:1;transform:none;}
  .orb{animation:none;}
}

/* ============================================================
   Homepage enrichment (v11) — additive only
   ============================================================ */

/* --- Alternating light sections --- */
.section--tint{background:#EFEAE0;}
.section__lede--dark{color:rgba(255,255,255,.68);}

/* --- Roles --- */
.role-grid{
  max-width:var(--container);margin:0 auto;
  display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(1.25rem,3vw,2rem);
}
.role{
  background:var(--paper-card);border:1px solid var(--paper-line);border-radius:var(--radius);
  padding:clamp(1.6rem,2.6vw,2rem);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.role:hover{transform:translateY(-4px);box-shadow:0 18px 40px -18px rgba(10,12,15,.25);border-color:var(--teal);}
.role__tag{
  display:block;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;
  color:var(--amber);margin-bottom:.9rem;
}
.role h3{font-size:1.1rem;margin-bottom:.6rem;}
.role p{font-size:.94rem;color:var(--slate);}
@media (max-width:960px){.role-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.role-grid{grid-template-columns:1fr;}}

/* --- Straight answers (native disclosure, no JS required) --- */
.faq{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:.9rem;}
.faq details{
  background:var(--paper-card);border:1px solid var(--paper-line);
  border-radius:14px;overflow:hidden;
  transition:border-color .3s var(--ease);
}
.faq details[open]{border-color:rgba(47,201,184,.55);}
.faq summary{
  cursor:pointer;list-style:none;
  display:flex;align-items:center;justify-content:space-between;gap:1rem;
  padding:1.15rem 1.4rem;
  font-family:var(--font-display);font-weight:700;font-size:1.02rem;letter-spacing:-.01em;
  transition:color .25s var(--ease);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{
  content:'+';font-family:var(--font-mono);font-weight:400;font-size:1.15rem;
  color:var(--amber);flex-shrink:0;
  transition:transform .3s var(--ease);
}
.faq details[open] summary::after{transform:rotate(45deg);}
.faq summary:hover{color:#0d7d70;}
.faq details > div{padding:0 1.4rem 1.3rem;color:var(--slate);font-size:.97rem;max-width:64ch;}
.faq details > div p + p{margin-top:.6rem;}

/* --- AI matrix footnote --- */
.matrix-note{
  max-width:var(--container);margin:1.75rem auto 0;
  font-family:var(--font-mono);font-size:.75rem;letter-spacing:.06em;
  color:rgba(255,255,255,.45);
}