:root{
      --bg:#ffffff; --fg:#0b1022; --muted:#5b6574; --line:#e9eef5; --accent:#0b5cff; --accent-2:#2143ff;
      --card:#f7f9fc; --ok:#16a34a; --warn:#f59e0b; --danger:#ef4444;
      --warm:#1e3a8a; --warm-2:#14274e; --warm-soft:#eef2fb; --warm-line:#c7d3ec;
    }
    @font-face{font-family:'Inter';src:url('/assets/inter.woff2') format('woff2');font-weight:100 900;font-style:normal;font-display:swap}*{box-sizing:border-box}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none !important;animation:none !important}}
    :focus-visible{outline:2px solid var(--accent);outline-offset:2px}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:Inter, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Arial, sans-serif;color:var(--fg);background:var(--bg);line-height:1.5}
    a{color:var(--accent);text-underline-offset:2px}
    .container{width:min(1120px,92vw);margin-inline:auto}
    img{max-width:100%;height:auto}

    header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--line)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0}
    .brand{display:flex;align-items:center;gap:12px;color:inherit;text-decoration:none}
    .brand-logo{height:38px;width:auto;display:block}
    .brand-sub{display:block;font-size:11px;color:var(--muted);font-weight:600;letter-spacing:.3px;padding-left:12px;border-left:1px solid var(--line);line-height:1.2;max-width:90px}
    @media (max-width:480px){.brand-sub{display:none}}
    nav.main a{color:#1f2937;text-decoration:none;padding:10px 13px;border-radius:10px;font-size:16px;font-weight:500}
    nav.main a:hover{background:#f2f5fb}
    nav.main a.active{color:var(--accent);font-weight:600}
    .btn{display:inline-flex;align-items:center;gap:10px;padding:12px 16px;border-radius:12px;border:1px solid var(--line);background:var(--accent);color:#fff;text-decoration:none;font-weight:600;cursor:pointer;transition:transform .08s ease, filter .15s ease}
    .btn:hover{filter:brightness(1.04);transform:translateY(-1px)}
    .btn.secondary{background:#fff;color:var(--accent)}
    .btn.ghost{background:#fff;border-color:var(--accent);color:var(--accent)}
    .btn.warm{background:linear-gradient(135deg,#2a4db0,#14274e);border-color:#1e3a8a;color:#ffffff}
    .btn.warm:hover{background:linear-gradient(135deg,#22409a,#0f1f40)}
    .menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:10px;padding:8px 10px;cursor:pointer}

    .pagehead{background:radial-gradient(900px 420px at 80% -10%, rgba(11,92,255,.12), transparent), linear-gradient(#fff,#fbfcff);padding:52px 0 40px;border-bottom:1px solid var(--line)}
    .pagehead h1{font-size:clamp(26px,4vw,40px);margin:8px 0;letter-spacing:-.5px}
    .pagehead p{color:var(--muted);max-width:64ch;font-size:clamp(15px,1.5vw,17px)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 13px;font-size:.82rem;font-weight:600;color:var(--accent-2)}

    /* Format notice */
    .modes{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:24px}
    @media (max-width:760px){.modes{grid-template-columns:1fr}}
    .mode{border:1px solid var(--line);border-radius:14px;padding:16px 18px;background:#fff;display:flex;gap:12px;align-items:flex-start}
    .mode.star{border-color:var(--warm-line);background:linear-gradient(180deg,#eef2fb,#dbe6fa)}
    .mode .ic{font-size:1.3rem;flex:none}
    .mode b{display:block;margin-bottom:2px}
    .mode span{color:var(--muted);font-size:.9rem}

    section{padding:46px 0;border-bottom:1px solid var(--line)}
    .area-head{display:flex;align-items:baseline;gap:12px;margin-bottom:6px;flex-wrap:wrap}
    .area-head h2{font-size:clamp(20px,2.6vw,26px);margin:0;letter-spacing:-.3px}
    .area-head .count{color:var(--muted);font-size:.9rem;font-weight:600;background:#eef3ff;border-radius:999px;padding:3px 10px}
    .area-intro{color:var(--muted);margin:0 0 18px;max-width:70ch;font-size:.95rem}

    .courses{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    @media (max-width:900px){.courses{grid-template-columns:1fr 1fr}}
    @media (max-width:600px){.courses{grid-template-columns:1fr}}
    .catfilter{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 4px}
    .catbtn{border:1px solid var(--line);background:#fff;color:#1f2937;border-radius:999px;padding:8px 16px;font-size:.9rem;font-weight:600;cursor:pointer;transition:background .12s}
    .catbtn:hover{background:#f2f5fb}
    .catbtn[aria-pressed="true"]{background:var(--accent);color:#fff;border-color:var(--accent)}
    .course{border:1px solid var(--line);border-radius:16px;padding:18px;background:#fff;text-decoration:none;color:inherit;display:flex;flex-direction:column;transition:transform .1s ease, box-shadow .15s ease;position:relative}
    .course:hover{transform:translateY(-3px);box-shadow:0 12px 28px -16px rgba(11,16,34,.3)}
    .course .toprow{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;gap:8px}
    .course .level{font-size:.72rem;font-weight:700;color:var(--accent-2);background:#eef3ff;border-radius:6px;padding:3px 8px}
    .course .langs{font-size:.72rem;color:var(--muted);font-weight:600}
    .course h3{margin:0 0 8px;font-size:1.05rem;line-height:1.3}
    .course .meta{color:var(--muted);font-size:.82rem;margin:0 0 14px}
    .course .coach{display:inline-flex;align-items:center;gap:5px;font-size:.72rem;font-weight:700;color:var(--warm-2);background:linear-gradient(180deg,#eef2fb,#dbe6fa);border:1px solid var(--warm-line);border-radius:6px;padding:3px 8px;margin-bottom:12px;width:fit-content}
    .course .foot{margin-top:auto;display:flex;justify-content:space-between;align-items:flex-end}
    .course .price{font-weight:700;color:var(--warm-2);font-size:1rem;line-height:1.2}
    .course .price small{display:block;color:var(--muted);font-weight:500;font-size:.72rem}
    .course .arrow{color:var(--accent);font-weight:600;font-size:.85rem}
    .course .pop{position:absolute;top:-11px;right:14px;background:linear-gradient(135deg,#2a4db0,#14274e);color:#fff;font-size:.68rem;font-weight:700;padding:4px 11px;border-radius:999px;letter-spacing:.03em;box-shadow:0 3px 10px -3px rgba(20,39,78,.4)}
    .search-wrap{margin:20px 0 4px}
    #courseSearch{width:100%;max-width:480px;padding:13px 16px 13px 44px;border:1px solid var(--line);border-radius:12px;font-size:1rem;font-family:inherit;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235b6574' stroke-width='2' stroke-linecap='round'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cpath d='m21 21-4.3-4.3'/%3E%3C/svg%3E") no-repeat 14px center/20px}
    #courseSearch:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(11,92,255,.12)}
    .course.soon{background:var(--card)}
    .course.soon .level{color:var(--warm-2);background:linear-gradient(180deg,#eef2fb,#dbe6fa)}

    .note{background:#f3f7ff;border:1px solid #dbe6ff;border-radius:14px;padding:16px 18px;color:#2b3a67;font-size:.9rem;margin-top:8px}

    /* Final CTA */
    .cta-final{text-align:center}
    .cta-final h2{font-size:clamp(22px,3vw,30px);margin:0 0 10px}
    .cta-final p{color:var(--muted);max-width:56ch;margin:0 auto 22px}
    .cta-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

    footer{padding:34px 0;color:var(--muted);font-size:.9rem}
    .foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px;margin-bottom:22px}
    @media (max-width:760px){.foot-grid{grid-template-columns:1fr}}
    footer a{color:var(--muted);text-decoration:none;display:block;margin:5px 0}
    footer a:hover{color:var(--accent)}
    .legal{font-size:12.5px;border-top:1px solid var(--line);padding-top:18px;line-height:1.6}

    @media (max-width:840px){
      nav.main{display:none;position:absolute;top:60px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;padding:10px 6vw 16px}
      nav.main.open{display:flex}
      nav.main a{padding:12px 8px;border-radius:8px}
      .menu-toggle{display:inline-flex}
      .nav .btn.head-cta{display:none}
    }