:root{--primary:#0b3b72;--accent:#f4a51c;--dark:#101828;--muted:#667085;--light:#f6f8fb;--white:#fff;--green:#0f9d58}*{box-sizing:border-box}body{margin:0;font-family:Inter,Arial,sans-serif;color:var(--dark);background:#fff;line-height:1.6}a{text-decoration:none;color:inherit}.container{width:min(1180px,92%);margin:auto}.topbar{background:var(--primary);color:#fff;font-size:14px;padding:8px 0}.topbar .container,.nav .container{display:flex;justify-content:space-between;gap:16px;align-items:center}.nav{position:sticky;top:0;background:#fff;z-index:50;box-shadow:0 4px 18px rgba(16,24,40,.08)}.brand{display:flex;align-items:center;gap:10px;padding:14px 0}.logo{height:48px;width:48px;border-radius:14px;background:linear-gradient(135deg,var(--primary),#1667b7);display:grid;place-items:center;color:#fff;font-weight:800}.brand h2{margin:0;font-size:20px}.brand p{margin:0;font-size:12px;color:var(--muted)}.menu{display:flex;gap:18px;align-items:center;font-weight:600}.menu a{color:#24304a}.btn{display:inline-block;background:var(--accent);color:#111;padding:12px 20px;border-radius:999px;font-weight:800;border:0;cursor:pointer}.btn.primary{background:var(--primary);color:#fff}.btn.green{background:var(--green);color:#fff}.hero{background:linear-gradient(110deg,rgba(11,59,114,.96),rgba(11,59,114,.78)),url('../img/hero.svg');background-size:cover;color:#fff;padding:86px 0 70px}.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:34px;align-items:center}.badge{display:inline-block;background:rgba(255,255,255,.15);padding:8px 14px;border-radius:999px;font-weight:700}.hero h1{font-size:52px;line-height:1.08;margin:18px 0}.hero p{font-size:19px;color:#e9f2ff}.hero-card{background:#fff;color:var(--dark);border-radius:28px;padding:26px;box-shadow:0 22px 60px rgba(0,0,0,.25)}.form input,.form select,.form textarea,.admin-form input,.admin-form textarea,.admin-form select{width:100%;padding:13px;margin:8px 0;border:1px solid #d0d5dd;border-radius:12px;font-size:15px}.section{padding:70px 0}.section.light{background:var(--light)}.title{text-align:center;max-width:760px;margin:0 auto 36px}.title h2{font-size:36px;margin:0 0 8px}.title p{color:var(--muted)}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.card{background:#fff;border:1px solid #edf0f5;border-radius:24px;padding:24px;box-shadow:0 10px 25px rgba(16,24,40,.06)}.card h3{margin-top:0}.icon{height:50px;width:50px;border-radius:16px;background:#eef5ff;color:var(--primary);display:grid;place-items:center;font-size:26px}.course-meta{color:var(--muted);font-size:14px}.marquee{overflow:hidden;white-space:nowrap}.track{display:inline-flex;gap:18px;animation:scroll 28s linear infinite}.student{width:210px;background:#fff;border-radius:20px;padding:12px;box-shadow:0 8px 20px rgba(0,0,0,.08);white-space:normal}.student img,.gallery img{width:100%;height:150px;object-fit:cover;border-radius:16px;background:#dde6f3}.student strong{display:block;margin-top:8px}@keyframes scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}.cta{background:linear-gradient(135deg,var(--primary),#062646);color:#fff;border-radius:34px;padding:42px;display:flex;justify-content:space-between;align-items:center;gap:20px}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:28px}.footer{background:#081c36;color:#d9e6f5;padding:46px 0 20px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:28px}.floating{position:fixed;right:18px;bottom:18px;z-index:99;display:flex;flex-direction:column;gap:10px}.float-btn{background:var(--green);color:#fff;padding:13px 18px;border-radius:999px;font-weight:800;box-shadow:0 10px 30px rgba(0,0,0,.2)}.banner{background:#fff3d8;color:#6b3b00;padding:10px;text-align:center;font-weight:800}.admin-wrap{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{background:#071e3a;color:#fff;padding:22px}.sidebar a{display:block;padding:11px;border-radius:10px;color:#fff;margin:5px 0}.sidebar a:hover{background:rgba(255,255,255,.1)}.admin-main{padding:28px;background:#f5f7fb}.table{width:100%;border-collapse:collapse;background:#fff;border-radius:14px;overflow:hidden}.table th,.table td{padding:12px;border-bottom:1px solid #eef0f4;text-align:left}.actions a{margin-right:8px;color:var(--primary);font-weight:700}.notice{background:#e8fff1;border:1px solid #b7f0cd;padding:12px;border-radius:12px;margin:12px 0}@media(max-width:850px){.menu{display:none}.hero-grid,.cards,.grid2,.footer-grid,.admin-wrap{grid-template-columns:1fr}.hero h1{font-size:36px}.cta{display:block}.admin-wrap{display:block}.sidebar{position:relative}.cards{gap:15px}.section{padding:46px 0}}