:root{
  --bg-1:#0b0b0c;
  --bg-2:#121214;
  --accent:#f5f5f5;
  --muted:#b7b7c0;
  --brand:#ffffff;
  --btn:#ffffff;
  --btn-text:#0b0b0c;
  --radius:14px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg-1);color:#fff;font-family:Inter,system-ui,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.6}
img{max-width:100%;display:block}
a{color:#fff;text-decoration:none}
.container{width:min(1100px,92%);margin-inline:auto}
h1{font-size:clamp(2.4rem,5vw,3.6rem);line-height:1.1;margin:.1em 0 .3em 0}
h2{font-size:clamp(1.8rem,3.5vw,2.4rem);margin:.2em 0}
h3{margin:.2em 0 .4em 0}
h4{margin:.3em 0}

.site-header{position:sticky;top:0;z-index:1000;background:#000a;border-bottom:1px solid #ffffff20;backdrop-filter:saturate(140%) blur(8px)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:12px 0}
.brand{display:flex;align-items:center;gap:10px;font-weight:700}
.brand img{width:26px;height:26px;filter:drop-shadow(0 2px 8px rgba(0,0,0,.5))}
.menu{display:flex;gap:24px}
.menu a{opacity:.9}
.menu a:hover{opacity:1}
.nav-toggle{display:none;background:none;border:0;color:#fff;font-size:1.6rem}

@media (max-width: 740px){
  .nav-toggle{display:inline-block}
  .menu{position:absolute;inset:60px 0 auto 0;background:#000;flex-direction:column;padding:16px 20px;border-bottom:1px solid #ffffff14;display:none}
  .menu.open{display:flex}
}

.hero{position:relative;min-height:50vh;display:grid;place-items:center;background: #000 url() center/cover no-repeat}
.hero.slim{min-height:46vh}
.hero::before{content:"";position:absolute;inset:0;background-image:var(--bg);background-size:cover;background-position:center}
.hero .overlay{position:absolute;inset:0;background:rgba(0,0,0,.75)}
.hero-content{position:relative;text-align:center;padding:4rem 0;z-index:1}
.hero-mark{width:90px;margin-inline:auto;opacity:.95;margin-bottom:10px}
.hero-mark.small{width:70px;opacity:.9}
.hero h1 span{font-weight:300;letter-spacing:4px}
.hero p{max-width:850px;margin:14px auto 0;color:var(--muted)}
.hero-subtitle{background:#000;padding:3rem 0;text-align:center}
.hero-subtitle p{max-width:850px;margin:0 auto 24px;color:var(--muted);font-size:1.1rem}

.cta-row{display:flex;gap:14px;justify-content:center;margin-top:24px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 18px;border-radius:var(--radius);border:1px solid #ffffff30;box-shadow:var(--shadow);transition:.15s}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--btn);color:var(--btn-text);font-weight:700}
.btn-ghost{background:transparent}
.btn-small{padding:8px 12px;font-size:.95rem}

.features{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;padding:56px 0}
.features .feature{background:var(--bg-2);padding:20px;border-radius:var(--radius);border:1px solid #ffffff14}
@media (max-width: 860px){.features{grid-template-columns:1fr}}

.card-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:22px;padding:36px 0 12px}
.card-grid .card:nth-child(1),.card-grid .card:nth-child(2),.card-grid .card:nth-child(3){grid-column:span 2}
.card-grid .card-centered:nth-last-child(2){grid-column:2/4}
.card-grid .card-centered:last-child{grid-column:4/6}
@media (max-width: 900px){.card-grid{grid-template-columns:1fr}.card-grid .card:nth-child(1),.card-grid .card:nth-child(2),.card-grid .card:nth-child(3),.card-grid .card-centered:nth-last-child(2),.card-grid .card-centered:last-child{grid-column:1}}
.card{background:var(--bg-2);border-radius:var(--radius);overflow:hidden;border:1px solid #ffffff14;box-shadow:var(--shadow)}
.card img{aspect-ratio:1/1;object-fit:cover;width:100%}
.card h3{padding:14px 16px 6px}
.card p{padding:0 16px 16px;color:var(--muted)}

.lesson-detail{display:grid;grid-template-columns: 1.2fr 1fr;gap:26px;padding:26px 0 10px}
.detail-media img{border-radius:var(--radius)}
.detail-copy .price{color:#b9f6c3;font-weight:700;margin-top:-6px}
.detail-copy ul{margin-top:.2rem;padding-left:1.2rem}
@media (max-width: 900px){.lesson-detail{grid-template-columns:1fr}}

.form-wrap{padding:40px 0 70px}
.form{padding:20px;gap:16px}
.form fieldset{border:1px solid #ffffff22;padding:10px 12px;border-radius:12px;margin-bottom:10px}
.form label{display:block;font-size:.95rem;color:#eaeaea}
.form input,.form textarea{width:100%;margin-top:6px;background:#0f0f12;border:1px solid #ffffff22;border-radius:10px;padding:10px 12px;color:#fff}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
@media (max-width: 760px){.grid-2{grid-template-columns:1fr}}

.trainer{padding:42px 0}
.trainer-content{display:grid;grid-template-columns:350px 1fr;gap:40px;align-items:center;max-width:1000px;margin:0 auto}
.trainer img{width:350px;height:350px;object-fit:cover;border-radius:16px}
.trainer-info{text-align:left}
.trainer .muted{color:var(--muted);margin-top:-6px}
@media (max-width: 900px){.trainer-content{grid-template-columns:1fr;text-align:center;justify-items:center}.trainer-info{text-align:center}.trainer img{width:280px;height:280px}}

.site-footer{background:#0a0a0d;border-top:1px solid #ffffff14;margin-top:50px;padding-top:28px}
.footer-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;padding-bottom:20px}
.tiny{color:#888;padding:10px 0 26px}
@media (max-width: 760px){.footer-grid{grid-template-columns:1fr}}

/* Modal Styles */
.modal{display:none;position:fixed;inset:0;z-index:2000;overflow-y:auto}
.modal.active{display:flex;align-items:center;justify-content:center;padding:20px}
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.85);backdrop-filter:blur(4px)}
.modal-content{position:relative;background:var(--bg-1);max-width:1100px;width:92%;max-height:90vh;overflow-y:auto;margin:auto;z-index:2001}
.modal-close{position:absolute;top:20px;right:20px;background:none;border:0;color:#fff;font-size:2.5rem;cursor:pointer;width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:.2s;z-index:2002;line-height:1;opacity:.8}
.modal-close:hover{opacity:1;background:rgba(255,255,255,.1);transform:rotate(90deg)}
.modal-content .lesson-detail{position:relative}