:root{--navy:#142b4a;--navy2:#203f65;--ink:#182536;--muted:#637185;--line:#dfe6ef;--bg:#f5f7fb;--white:#fff;--accent:#d9e8fb;--success:#e5f7ed;--danger:#fff0f0}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}a{color:var(--navy2);text-decoration:none}a:hover{text-decoration:underline}img,video{max-width:100%;height:auto}.site-header{display:flex;align-items:center;gap:20px;padding:16px max(22px,calc((100% - 1180px)/2));background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.brand{font-weight:850;font-size:1.15rem;color:var(--navy);white-space:nowrap}.site-header nav{display:flex;gap:16px;align-items:center;flex:1;justify-content:center}.site-header nav a{font-size:.92rem;color:#34445b}.header-actions{display:flex;align-items:center;gap:10px}.lang{font-size:.9rem}.menu-toggle{display:none;border:0;background:transparent;font-size:1.5rem}.container{max-width:1180px;margin:auto;padding:26px 22px 0}.hero{background:linear-gradient(125deg,#112744,#234a75);border-radius:24px;padding:58px 48px;color:#fff;display:grid;grid-template-columns:1.4fr .6fr;gap:35px;align-items:center;overflow:hidden}.hero h1{font-size:clamp(2.1rem,5vw,4.1rem);line-height:1.1;margin:8px 0 18px}.hero p{max-width:720px;color:#e3edf9;font-size:1.08rem}.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;font-weight:800;color:#b7d7fb}.hero .btn{background:#fff;color:var(--navy)}.hero-photo{width:100%;max-width:300px;aspect-ratio:4/5;object-fit:cover;border-radius:20px;border:4px solid #ffffff30;background:#fff2}.placeholder-photo{display:grid;place-items:center;background:#dce8f5;color:var(--navy);font-size:4rem;min-height:240px;border-radius:18px}.btn{display:inline-flex;align-items:center;justify-content:center;background:var(--navy);color:#fff;padding:11px 18px;border-radius:10px;font-weight:700;border:1px solid transparent;cursor:pointer}.btn:hover{background:var(--navy2);text-decoration:none}.btn.secondary{background:#fff;color:var(--navy);border-color:var(--line)}.btn.small{padding:7px 12px;font-size:.88rem}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.section{padding:38px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:18px}.section h2,.page-title{font-size:clamp(1.65rem,3vw,2.35rem);line-height:1.2;margin:0 0 10px;color:var(--navy)}.section-head p,.muted{color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.card{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:0 4px 20px #193b6108}.card-body{padding:18px}.card h3{margin:0 0 8px;font-size:1.1rem}.card p{margin:0 0 12px;color:var(--muted)}.cover{width:100%;aspect-ratio:16/9;object-fit:cover;background:#e4edf7;display:block}.cover-placeholder{aspect-ratio:16/9;display:grid;place-items:center;background:linear-gradient(130deg,#dce8f5,#f5f8fc);font-size:2rem;color:var(--navy)}.pill{display:inline-block;background:#edf3fb;color:var(--navy);border-radius:999px;padding:4px 9px;font-size:.78rem;font-weight:700}.price{font-weight:850;font-size:1.2rem;color:var(--navy)}.old-price{color:#7c8795;text-decoration:line-through;margin-left:8px;font-size:.95rem}.footer{margin-top:44px;padding:28px 0 22px;border-top:1px solid var(--line);display:flex;gap:22px;align-items:center;justify-content:space-between;flex-wrap:wrap;color:var(--muted)}.footer p{margin:2px 0}.footer small{width:100%}.alert{padding:12px 15px;border-radius:10px;margin:0 0 18px;background:var(--accent);color:var(--navy)}.alert.error{background:var(--danger);color:#8c2525}.alert.success{background:var(--success);color:#17613b}.form-card,.panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}.field label{font-weight:700;font-size:.92rem}.field input,.field select,.field textarea{font:inherit;padding:11px 12px;border:1px solid #ccd6e2;border-radius:9px;background:#fff;width:100%}.field textarea{min-height:115px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid #b8d5f7;border-color:#5b8dc4}.table-wrap{overflow:auto;background:#fff;border:1px solid var(--line);border-radius:12px}table{width:100%;border-collapse:collapse;min-width:640px}th,td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}th{background:#f0f4f9;color:var(--navy);font-size:.88rem}tr:last-child td{border-bottom:0}.admin-shell{display:grid;grid-template-columns:235px 1fr;gap:20px}.sidebar{background:#142b4a;color:#fff;border-radius:16px;padding:18px;height:max-content}.sidebar a{display:block;padding:9px 10px;color:#e7eef7;border-radius:8px}.sidebar a:hover{background:#ffffff18;text-decoration:none}.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.stat{background:#fff;border:1px solid var(--line);padding:18px;border-radius:13px}.stat strong{display:block;font-size:1.6rem;color:var(--navy)}.video-frame{width:100%;aspect-ratio:16/9;border:0;border-radius:12px;background:#000}.notice{padding:14px;background:#fff8e5;border:1px solid #f2dfaa;border-radius:10px;color:#70591b}.lesson-list{padding:0;list-style:none}.lesson-list li{padding:12px 0;border-bottom:1px solid var(--line)}.exam-option{display:flex;gap:10px;align-items:flex-start;padding:10px;border:1px solid var(--line);border-radius:9px;margin:8px 0}.exam-option input{margin-top:7px}.certificate{background:#fff;border:8px double #203f65;padding:34px;text-align:center;border-radius:8px}.certificate h1{font-family:Georgia,serif;color:#17375e;font-size:2.4rem}.certificate .cert-code{letter-spacing:.12em;font-weight:700}.empty{padding:32px;text-align:center;color:var(--muted);background:#fff;border:1px dashed #c9d5e3;border-radius:14px}.nav-open .site-header nav{display:flex}@media(max-width:1000px){.site-header nav{gap:10px}.site-header nav a{font-size:.83rem}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hero{padding:38px 30px}}@media(max-width:760px){.site-header{flex-wrap:wrap;justify-content:space-between}.site-header nav{display:none;order:5;width:100%;flex-direction:column;align-items:flex-start;padding:10px 0}.header-actions{margin-left:auto}.menu-toggle{display:block}.hero{grid-template-columns:1fr;padding:30px 24px}.hero-photo{max-width:220px}.grid,.grid.two{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}.admin-shell{grid-template-columns:1fr}.sidebar{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.stats{grid-template-columns:repeat(2,minmax(0,1fr))}.section-head{align-items:start;flex-direction:column}.container{padding-left:15px;padding-right:15px}}@media print{.site-header,.footer,.no-print{display:none!important}body{background:#fff}.container{max-width:none;padding:0}.certificate{border:8px double #203f65}}