:root{--primary:#2563eb;--text:#182230;--muted:#667085;--bg:#f6f8fb;--card:#ffffff;--line:#e4e7ec;--soft:#eef4ff;--radius:14px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;line-height:1.65}.container{max-width:1080px;margin:0 auto;padding:0 20px}.site-header{background:rgba(255,255,255,.92);border-bottom:1px solid var(--line);position:sticky;top:0;backdrop-filter:blur(10px);z-index:3}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:22px;padding:16px 20px}.brand{font-weight:900;color:var(--text);text-decoration:none;font-size:20px}nav{display:flex;gap:12px;flex-wrap:wrap}nav a{color:var(--muted);text-decoration:none;font-weight:700;font-size:14px}nav a.active,nav a:hover{color:var(--primary)}main{padding:38px 20px}.hero{padding:52px 34px;background:linear-gradient(135deg,#fff,var(--soft));border:1px solid var(--line);border-radius:calc(var(--radius) + 8px);box-shadow:0 20px 50px rgba(16,24,40,.08)}.eyebrow{color:var(--primary);font-weight:900;text-transform:uppercase;letter-spacing:.08em;font-size:13px}.lead{font-size:20px;color:#344054;max-width:820px}h1{font-size:clamp(32px,5vw,54px);line-height:1.05;margin:8px 0 16px}h2{font-size:25px;margin-top:0}.btn{display:inline-block;background:var(--primary);color:#fff;text-decoration:none;padding:13px 18px;border-radius:12px;font-weight:900}.btn.ghost{background:#fff;color:var(--primary);border:1px solid var(--line)}.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.cards,.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:28px 0}.cards article,.card-grid article,.note,details,.split>div,.media-block{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 10px 28px rgba(16,24,40,.05)}.split{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:24px 0}.notice,.note{background:#fffbeb}.steps li{margin-bottom:14px}details{margin:12px 0}summary{font-weight:900;cursor:pointer}.media-block{margin:26px 0}.video-wrap{position:relative;padding-bottom:56.25%;height:0;overflow:hidden;border-radius:var(--radius);background:#000}.video-wrap iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.site-footer{border-top:1px solid var(--line);padding:28px 0;color:var(--muted);background:#fff}a{color:var(--primary)}@media(max-width:800px){.header-inner{display:block}nav{margin-top:12px}.cards,.card-grid,.split{grid-template-columns:1fr}h1{font-size:34px}.hero{padding:30px 20px}}