:root{
  --paper:#f6f2e9;
  --paper-deep:#efe9da;
  --ink:#15233f;
  --ink-soft:#3b4a66;
  --amber:#c5772f;
  --amber-deep:#a25e1f;
  --line:#d8d0bd;
  --white:#fffdf8;
  --shadow:24px 24px 0 -12px rgba(21,35,63,.06);
  --maxw:1120px;
  --font-display:"Fraunces",Georgia,serif;
  --font-body:"Hanken Grotesk",system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  background:var(--paper);
  color:var(--ink);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px}

/* ---------- Nav ---------- */
header.site{
  position:sticky;top:0;z-index:50;
  background:rgba(246,242,233,.86);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;padding:18px 32px;max-width:var(--maxw);margin:0 auto}
.brand{display:flex;flex-direction:column;line-height:1.05}
.brand .name{font-family:var(--font-display);font-weight:600;font-size:1.35rem;letter-spacing:-.01em}
.brand .sub{font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-soft);margin-top:3px}
.nav ul{display:flex;gap:30px;list-style:none;align-items:center}
.nav ul a{font-size:.95rem;font-weight:500;position:relative;padding:4px 0}
.nav ul a::after{content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;background:var(--amber);transition:width .25s ease}
.nav ul a:hover::after,.nav ul a.active::after{width:100%}
.nav .cta{background:var(--ink);color:var(--paper);padding:9px 18px;border-radius:2px;font-size:.9rem;font-weight:600}
.nav .cta::after{display:none}
.nav .cta:hover{background:var(--amber-deep)}
.menu-toggle{display:none;background:none;border:0;font-size:1.6rem;color:var(--ink);cursor:pointer}

/* ---------- Hero ---------- */
.hero{position:relative;padding:96px 0 80px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:42px 42px;
  opacity:.4;
  -webkit-mask-image:radial-gradient(ellipse 70% 80% at 70% 30%,#000 0%,transparent 75%);
  mask-image:radial-gradient(ellipse 70% 80% at 70% 30%,#000 0%,transparent 75%);
}
.hero .wrap{position:relative;z-index:1}
.kicker{font-size:.78rem;letter-spacing:.22em;text-transform:uppercase;color:var(--amber-deep);font-weight:600;margin-bottom:22px}
.hero h1{
  font-family:var(--font-display);
  font-weight:600;
  font-size:clamp(2.4rem,5.4vw,4.3rem);
  line-height:1.04;
  letter-spacing:-.02em;
  max-width:14ch;
}
.hero h1 em{font-style:italic;color:var(--amber)}
.hero p.lead{margin-top:26px;max-width:52ch;font-size:1.12rem;color:var(--ink-soft)}
.hero .btns{margin-top:38px;display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-block;padding:14px 28px;border-radius:2px;font-weight:600;font-size:.98rem;transition:transform .15s ease,background .2s ease}
.btn-primary{background:var(--amber);color:var(--white)}
.btn-primary:hover{background:var(--amber-deep);transform:translateY(-2px)}
.btn-ghost{border:1.5px solid var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}

/* ---------- Sections ---------- */
section{padding:84px 0}
.section-num{font-family:var(--font-display);font-size:.95rem;color:var(--amber-deep);letter-spacing:.05em;display:block;margin-bottom:10px}
h2.section-title{font-family:var(--font-display);font-weight:600;font-size:clamp(1.9rem,3.6vw,2.8rem);letter-spacing:-.015em;line-height:1.1;max-width:18ch}
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:start}
.intro-grid p{font-size:1.06rem;color:var(--ink-soft);margin-bottom:18px}
.divider{height:1px;background:var(--line);max-width:var(--maxw);margin:0 auto}

/* ---------- Bio ---------- */
.bio{background:var(--paper-deep)}
.bio-grid{display:grid;grid-template-columns:300px 1fr;gap:56px;align-items:start}
.bio-photo{position:relative}
.bio-photo img{border-radius:3px;width:100%;filter:grayscale(.15);box-shadow:var(--shadow)}
.bio-photo .tag{position:absolute;bottom:-14px;left:-14px;background:var(--amber);color:var(--white);font-family:var(--font-display);font-weight:600;padding:8px 18px;font-size:1.1rem;border-radius:2px}
.bio h3{font-family:var(--font-display);font-weight:600;font-size:1.5rem;margin:30px 0 10px}
.bio .deg{font-size:1.05rem;color:var(--ink-soft);max-width:60ch}
.bio .bio-body p{margin-top:16px;color:var(--ink-soft)}
.timeline{margin-top:40px;display:grid;grid-template-columns:repeat(2,1fr);gap:26px 40px}
.tl-item{border-left:2px solid var(--amber);padding-left:18px}
.tl-item .yr{font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--amber-deep);font-weight:600}
.tl-item .ttl{font-family:var(--font-display);font-weight:600;font-size:1.08rem;margin:4px 0 4px}
.tl-item .loc{font-size:.92rem;color:var(--ink-soft)}

/* ---------- Why ---------- */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-top:48px}
.why-card{background:var(--white);border:1px solid var(--line);border-radius:3px;padding:32px 28px;transition:transform .2s ease,box-shadow .2s ease}
.why-card:hover{transform:translateY(-4px);box-shadow:0 18px 40px -22px rgba(21,35,63,.4)}
.why-card .n{font-family:var(--font-display);font-size:2.2rem;color:var(--amber);line-height:1}
.why-card p{margin-top:14px;color:var(--ink-soft);font-size:1rem}

/* ---------- Subjects ---------- */
.subjects-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-top:48px}
.subj-card{background:var(--white);border:1px solid var(--line);border-radius:3px;overflow:hidden;transition:transform .2s ease,box-shadow .2s ease;display:flex;flex-direction:column}
.subj-card:hover{transform:translateY(-5px);box-shadow:0 22px 48px -24px rgba(21,35,63,.45)}
.subj-card .imgs{display:grid;grid-template-columns:1fr 1fr;gap:2px;background:var(--line)}
.subj-card .imgs img{aspect-ratio:1/1;object-fit:cover;filter:grayscale(.2);transition:filter .25s ease}
.subj-card .imgs a:hover img{filter:grayscale(0)}
.subj-card .body{padding:24px 24px 28px}
.subj-card h3{font-family:var(--font-display);font-weight:600;font-size:1.5rem}
.subj-card h3 a:hover{color:var(--amber)}
.subj-card .caption{font-size:.82rem;color:var(--ink-soft);margin-top:8px}
.subj-card .more{display:inline-block;margin-top:16px;font-weight:600;color:var(--amber-deep);font-size:.95rem}
.subj-card .more:hover{text-decoration:underline}

/* ---------- Courses note ---------- */
.note{background:var(--ink);color:var(--paper)}
.note h2{color:var(--paper)}
.note .section-num{color:var(--amber)}
.note p{color:#cdd4e0;font-size:1.08rem;max-width:60ch;margin-top:16px}
.note a.credit{color:var(--amber);font-size:.9rem;display:inline-block;margin-top:28px}
.note a.credit:hover{text-decoration:underline}

/* ---------- Subject (detail) pages ---------- */
.subject-hero{padding:72px 0 36px}
.subject-hero .kicker{margin-bottom:14px}
.subject-hero h1{font-family:var(--font-display);font-weight:600;font-size:clamp(2.2rem,5vw,3.4rem);letter-spacing:-.02em}
.level{padding:24px 0 40px}
.level h2{font-family:var(--font-display);font-weight:600;font-size:1.7rem;color:var(--amber-deep);border-bottom:2px solid var(--line);padding-bottom:12px;margin-bottom:30px}
.topics{display:grid;grid-template-columns:repeat(2,1fr);gap:30px 50px}
.topic h3{font-family:var(--font-display);font-weight:600;font-size:1.2rem;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.topic h3::before{content:"";width:10px;height:10px;background:var(--amber);border-radius:50%;flex:none}
.topic ul{list-style:none;padding-left:20px}
.topic li{position:relative;padding:5px 0;color:var(--ink-soft);font-size:1rem}
.topic li::before{content:"–";position:absolute;left:-18px;color:var(--amber)}

/* ---------- Contact ---------- */
.contact{background:var(--paper-deep)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.contact h2{margin-bottom:8px}
.contact .lead{color:var(--ink-soft);font-size:1.08rem;max-width:42ch}
.contact .linkedin{display:inline-flex;align-items:center;gap:10px;margin-top:26px;font-weight:600;color:var(--amber-deep)}
.contact .linkedin:hover{text-decoration:underline}
form{display:grid;gap:18px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
label{font-size:.82rem;letter-spacing:.06em;text-transform:uppercase;font-weight:600;color:var(--ink-soft);display:block;margin-bottom:6px}
input,textarea{width:100%;padding:13px 15px;border:1.5px solid var(--line);border-radius:2px;background:var(--white);font-family:var(--font-body);font-size:1rem;color:var(--ink);transition:border-color .2s ease}
input:focus,textarea:focus{outline:none;border-color:var(--amber)}
textarea{min-height:130px;resize:vertical}
button[type=submit]{background:var(--ink);color:var(--paper);border:0;padding:15px;font-family:var(--font-body);font-weight:600;font-size:1rem;border-radius:2px;cursor:pointer;transition:background .2s ease}
button[type=submit]:hover{background:var(--amber-deep)}

/* ---------- Footer ---------- */
footer.site{background:var(--ink);color:#aeb8c9;padding:54px 0 40px}
.foot-grid{display:flex;justify-content:space-between;flex-wrap:wrap;gap:30px}
footer .brand .name{color:var(--paper)}
footer .brand .sub{color:#8b95a8}
.foot-links{display:flex;flex-direction:column;gap:8px}
.foot-links a{font-size:.92rem}
.foot-links a:hover{color:var(--amber)}
.foot-bottom{border-top:1px solid #2a3756;margin-top:36px;padding-top:24px;font-size:.85rem;color:#7c8699}

/* ---------- Language switcher ---------- */
.nav ul .lang a{font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;padding:5px 11px;border:1.5px solid var(--line);border-radius:2px;color:var(--ink-soft);font-weight:600}
.nav ul .lang a::after{display:none!important}
.nav ul .lang a:hover{border-color:var(--amber);color:var(--amber)}
.nav ul .lang a.active-lang{background:var(--ink);color:var(--paper);border-color:var(--ink)}

/* ---------- Legal pages ---------- */
.legal-body{max-width:760px}
.legal-body h2{font-family:var(--font-display);font-weight:600;font-size:1.35rem;margin:40px 0 12px;color:var(--ink)}
.legal-body p{color:var(--ink-soft);margin-bottom:14px;font-size:1.02rem;line-height:1.75}
.legal-body ul{list-style:disc;padding-left:24px;color:var(--ink-soft);margin-bottom:14px}
.legal-body li{padding:4px 0;font-size:1.02rem}
.legal-body a{color:var(--amber-deep);text-decoration:underline}
.legal-body strong{color:var(--ink);font-weight:600}
.legal-intro{font-size:1.06rem;color:var(--ink-soft);max-width:64ch;margin-bottom:40px;line-height:1.75}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .intro-grid,.bio-grid,.contact-grid{grid-template-columns:1fr;gap:36px}
  .why-grid,.subjects-grid{grid-template-columns:1fr}
  .timeline,.topics{grid-template-columns:1fr}
  .bio-photo{max-width:300px}
}
@media(max-width:680px){
  .nav ul{position:fixed;inset:64px 0 auto 0;background:var(--paper);flex-direction:column;gap:0;padding:8px 0;border-bottom:1px solid var(--line);transform:translateY(-150%);transition:transform .3s ease}
  .nav ul.open{transform:translateY(0)}
  .nav ul li{width:100%;text-align:center;padding:12px 0;border-top:1px solid var(--line)}
  .menu-toggle{display:block}
  .wrap{padding:0 22px}
  .row2{grid-template-columns:1fr}
}