:root{--ink:#111827;--muted:#6b7280;--brand:#0ea5a3;--accent:#f59e0b;--line:#e5e7eb;--card:#ffffff;--bg:#fafaf9}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:Arial,Helvetica,sans-serif}
h1,h2,h3{font-family:Georgia,'Times New Roman',serif}
a{text-decoration:none;color:inherit}
header{background:#fff;border-bottom:1px solid var(--line)}
header .wrap{max-width:1180px;margin:0 auto;padding:12px 16px;display:flex;justify-content:space-between;align-items:center}
.brand{font-weight:900;letter-spacing:.3px}
.nav a{padding:8px 12px;border-radius:10px;font-weight:700;color:#374151}
.nav a:hover{background:#eef2ff}
.hero{max-width:1180px;margin:16px auto;border-radius:16px;overflow:hidden;box-shadow:0 10px 28px rgba(2,6,23,.12);position:relative}
.hero .pattern{width:100%;display:block}
.hero .inner{position:absolute;left:24px;top:24px;background:rgba(255,255,255,.92);padding:18px;border-radius:12px;max-width:520px}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
.btn{display:inline-block;padding:12px 16px;border-radius:999px;font-weight:800}
.btn.ghost{background:#fff;border:2px solid var(--brand);color:var(--brand)}
.btn.fill{background:var(--brand);color:#fff}
.layout{max-width:1180px;margin:0 auto;padding:0 16px 40px;display:grid;grid-template-columns:2fr 360px;gap:22px}
@media(max-width:1000px){.layout{grid-template-columns:1fr} .sticky{position:static}}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px;box-shadow:0 6px 16px rgba(2,6,23,.06)}
.kicker{display:inline-block;background:#ccfbf1;color:#0f766e;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:800;letter-spacing:.3px;margin-bottom:10px}
.lead{color:var(--muted);line-height:1.8}
.article img{width:100%;border-radius:12px;margin:12px 0}
ul{padding-left:18px}
.sticky{position:sticky;top:16px;height:max-content;display:flex;flex-direction:column;gap:12px}
.cta{display:flex;flex-direction:column;gap:10px}
.courses .grid{display:grid;grid-template-columns:1fr;gap:12px}
@media(min-width:1000px){.courses .grid{grid-template-columns:repeat(2,1fr)}}
.course{background:#fff;border:1px dashed var(--line);border-radius:12px;padding:14px;position:relative}
.badge{position:absolute;top:10px;right:10px;background:#fffbeb;color:#92400e;border:1px solid #fde68a;border-radius:999px;padding:2px 8px;font-size:12px;font-weight:800}
.price{color:#065f46;font-weight:800}
small.muted{color:var(--muted)}
.testis{column-count:2;column-gap:12px}
@media(max-width:800px){.testis{column-count:1}}
.t{break-inside:avoid;background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px;margin:0 0 12px}
form label{display:block;margin:10px 0 6px}
input,textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff}
.checkbox{display:flex;gap:12px;align-items:flex-start;margin-top:10px}
button{background:var(--accent);color:#fff;border:none;border-radius:10px;padding:12px 16px;font-weight:800;cursor:pointer;box-shadow:0 4px 12px rgba(245,158,11,.25)}
button:hover{filter:brightness(.97)}
footer{border-top:1px solid var(--line);padding:26px 16px;background:#fff}
footer .wrap{max-width:1180px;margin:0 auto;display:flex;flex-direction:column;gap:6px} 
.modal{position:fixed;inset:0;background:rgba(2,6,23,.55);display:none;align-items:center;justify-content:center;padding:20px}
.modal .box{background:#fff;border-radius:14px;max-width:420px;width:100%;padding:22px;box-shadow:0 18px 60px rgba(2,6,23,.3);text-align:center}
.close{margin-top:14px;background:var(--brand);color:#fff}