:root{
  --bg:#060914;--panel:#101827;--panel2:#142038;--text:#fff;--muted:#b8c6dc;--blue:#4da3ff;--violet:#8b5cf6;--gold:#e7c46a;--line:rgba(255,255,255,.11);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text);overflow-x:hidden}
a{text-decoration:none;color:inherit}
.stars{position:fixed;inset:0;pointer-events:none;background-image:radial-gradient(#ffffff88 1px,transparent 1px),radial-gradient(#8ec5ff66 1px,transparent 1px);background-size:80px 80px,130px 130px;animation:stars 28s linear infinite;opacity:.35;z-index:-2}
.stars:after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 70% 10%,#6346ff35,transparent 32%),radial-gradient(circle at 20% 80%,#0099ff22,transparent 34%),linear-gradient(#05091644,#05091666)}
@keyframes stars{from{background-position:0 0,0 0}to{background-position:400px 600px,-300px 500px}}
.site-header{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 6%;background:rgba(6,9,20,.9);backdrop-filter:blur(14px);border-bottom:1px solid rgba(255,255,255,.09)}
.brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-weight:800;font-size:22px}
.brand-mark,.brand-star{color:var(--gold);font-size:26px}
nav,.top-nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
nav a,.top-nav a{color:#eaf1ff;text-decoration:none;font-weight:700;font-size:15px}.nav-cta,.nav-button{padding:10px 16px;border-radius:999px;background:linear-gradient(135deg,var(--blue),var(--violet));box-shadow:0 14px 35px rgba(77,163,255,.22)}
.hero{min-height:650px;display:flex;align-items:center;justify-content:center;text-align:center;padding:90px 20px;position:relative;background:radial-gradient(circle at center,#15294c 0,#090d19 52%,#05070d 100%)}
.hero-content{max-width:920px;position:relative;z-index:2}.eyebrow{color:var(--gold);font-weight:800;letter-spacing:2px;text-transform:uppercase;font-size:13px}.hero h1{font-size:72px;line-height:1;margin:15px 0;text-shadow:0 0 40px rgba(77,163,255,.45)}.hero-text{font-size:21px;line-height:1.8;color:#e5eefc;max-width:780px;margin:0 auto 34px}.hero-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}.button{display:inline-flex;align-items:center;justify-content:center;border:none;cursor:pointer;text-decoration:none;font-weight:800;border-radius:999px;padding:15px 24px;color:#fff;font-size:15px}.primary,.primary-action{background:linear-gradient(135deg,var(--blue),var(--violet));box-shadow:0 14px 38px rgba(77,163,255,.25)}.secondary{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15)}.glow{position:absolute;border-radius:50%;filter:blur(55px);opacity:.55}.glow-one{width:240px;height:240px;background:var(--blue);left:12%;top:22%}.glow-two{width:280px;height:280px;background:var(--violet);right:10%;bottom:18%}.section{max-width:1180px;margin:auto;padding:75px 20px}.section-heading{text-align:center;margin-bottom:32px}.section h2{font-size:38px;margin:8px 0}.info-card,.cta-card,.notice-box{background:linear-gradient(135deg,var(--panel),var(--panel2));border:1px solid rgba(255,255,255,.09);border-radius:26px;padding:34px;box-shadow:0 20px 55px rgba(0,0,0,.28);color:#dbe7f8;line-height:1.9}.features{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:28px}.feature-card{background:rgba(16,24,39,.82);border:1px solid rgba(255,255,255,.09);border-radius:22px;padding:28px;text-align:center}.feature-card span{font-size:42px;color:var(--gold)}.feature-card p{color:var(--muted);line-height:1.7}.cta-section{text-align:center}.cta-card p{font-size:17px}
/* Eğitim sayfası v3 */
.academy-shell{max-width:1480px;margin:0 auto;padding:36px 28px 70px;display:grid;grid-template-columns:330px 1fr;gap:28px}.lesson-sidebar{background:rgba(10,17,32,.86);border:1px solid var(--line);border-radius:26px;padding:24px;align-self:start;position:sticky;top:112px}.lesson-sidebar h1{font-size:24px;margin:0 0 20px}.lesson-list{display:flex;flex-direction:column;gap:14px}.lesson-card{appearance:none;border:1px solid var(--line);background:#111827;color:#fff;border-radius:18px;padding:11px;text-align:left;cursor:pointer;transition:.2s;display:grid;grid-template-columns:92px 1fr;gap:12px;align-items:center}.lesson-card:hover{transform:translateY(-2px);border-color:#6eaaff}.lesson-card.active{border-color:#6eaaff;background:linear-gradient(135deg,#152743,#241d62);box-shadow:0 15px 35px rgba(93,162,255,.18)}.lesson-card.completed{border-color:rgba(72,220,140,.45)}.lesson-card img{width:92px;height:54px;object-fit:cover;border-radius:10px;grid-row:1/4;background:#1a2234}.lesson-card .lesson-meta{color:var(--gold);font-weight:900;font-size:12px;text-transform:uppercase;letter-spacing:1px}.lesson-card strong{font-size:13px;line-height:1.32}.lesson-card small{color:var(--muted);font-weight:700}.player-panel{background:rgba(8,15,29,.72);border:1px solid var(--line);border-radius:28px;padding:24px}.video-wrap{border-radius:22px;overflow:hidden;background:#000;border:1px solid var(--line);box-shadow:0 22px 70px rgba(0,0,0,.45)}video{width:100%;display:block;aspect-ratio:16/9;background:#000}.lesson-headline{margin:24px 0;background:linear-gradient(135deg,#0e172a,#14223c);border:1px solid var(--line);border-radius:22px;padding:24px}.lesson-headline p{margin:0;color:var(--gold);font-weight:900}.lesson-headline h2{margin:10px 0 8px;font-size:clamp(23px,4vw,38px);line-height:1.16}.lesson-headline #lessonStatus{color:var(--muted);font-weight:600}.lesson-actions{display:flex;gap:14px;flex-wrap:wrap;margin:18px 0}.lesson-actions button{border:1px solid var(--line);background:#172033;color:#fff;border-radius:999px;padding:15px 24px;font-weight:900;cursor:pointer}.lesson-actions button:disabled{opacity:.4;cursor:not-allowed}.lesson-actions .primary-action{border:none}.notice-box{margin-top:20px}.notice-box h3{margin-top:0;color:#fff}
footer{text-align:center;padding:30px;color:#aeb9c9;background:#04060b;border-top:1px solid rgba(255,255,255,.08)}
@media(max-width:980px){.site-header{height:auto;padding:18px 20px;flex-direction:column;gap:14px;text-align:center}.top-nav,nav{flex-wrap:wrap;justify-content:center}.academy-shell{grid-template-columns:1fr;padding:22px 14px}.lesson-sidebar{position:static}.lesson-card{grid-template-columns:120px 1fr}.lesson-card img{width:120px;height:68px}.features{grid-template-columns:1fr}.hero{min-height:560px}.hero h1{font-size:46px}.hero-text{font-size:17px}}
@media(max-width:560px){nav a,.top-nav a{font-size:14px}.lesson-card{grid-template-columns:1fr}.lesson-card img{width:100%;height:auto;aspect-ratio:16/9}.player-panel,.lesson-sidebar{padding:16px}.lesson-actions{flex-direction:column}.lesson-actions button,.button{width:100%}.section h2{font-size:30px}.info-card,.cta-card{padding:20px;border-radius:20px}.hero{min-height:540px}.hero h1{font-size:38px}}