*{box-sizing:border-box;margin:0;padding:0}
body{font-family:Arial,sans-serif;background:#f6f8fb;color:#1f2937;line-height:1.75}
a{text-decoration:none;color:inherit}
.header{background:#ffffff;border-bottom:1px solid #e5e7eb;position:sticky;top:0;z-index:99}
.nav{max-width:1180px;margin:auto;padding:18px 22px;display:flex;justify-content:space-between;align-items:center}
.logo{font-size:26px;font-weight:900;color:#2563eb}
.logo span{color:#111827}
.menu a{margin-left:18px;font-weight:700;color:#374151}
.menu a:hover{color:#2563eb}
.hero{background:linear-gradient(135deg,#eef6ff,#ffffff);padding:76px 22px;border-bottom:1px solid #e5e7eb}
.hero-inner{max-width:1180px;margin:auto;display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:center}
.badge{display:inline-block;background:#dbeafe;color:#1d4ed8;padding:7px 14px;border-radius:999px;font-size:14px;font-weight:800;margin-bottom:18px}
.hero h1{font-size:48px;line-height:1.15;color:#0f172a;margin-bottom:16px}
.hero p{font-size:18px;color:#4b5563;max-width:720px}
.hero-box{background:#fff;border:1px solid #e5e7eb;border-radius:24px;padding:28px;box-shadow:0 14px 35px rgba(37,99,235,.10)}
.hero-box h2{font-size:24px;margin-bottom:10px}
.btn{display:inline-block;background:#2563eb;color:#fff;padding:12px 20px;border-radius:12px;font-weight:800;margin-top:20px}
.wrap{max-width:1180px;margin:38px auto;padding:0 22px}
.grid{display:grid;grid-template-columns:1fr 310px;gap:30px;align-items:start}
.card{background:#fff;border-radius:22px;box-shadow:0 12px 35px rgba(15,23,42,.07);border:1px solid #eef2f7}
.content{padding:38px}
.content h2{font-size:34px;line-height:1.25;margin-bottom:14px;color:#0f172a}
.content h3{font-size:24px;margin:32px 0 10px;color:#111827}
.content p{font-size:17px;margin-bottom:18px}
.content ul{margin:12px 0 20px 24px}
.content li{margin-bottom:8px}
.sidebar{padding:24px;position:sticky;top:92px}
.sidebar h3{font-size:20px;margin-bottom:14px;color:#0f172a}
.sidebox{background:#f8fafc;border:1px solid #e5e7eb;border-radius:16px;padding:16px;margin-bottom:14px}
.sidebox a{color:#2563eb;font-weight:700}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:24px}
.feature{background:#f8fafc;border:1px solid #e5e7eb;border-radius:18px;padding:22px}
.feature b{font-size:30px;color:#2563eb;display:block;margin-bottom:8px}
.footer{background:#0f172a;color:#cbd5e1;text-align:center;padding:32px 20px;margin-top:45px}
@media(max-width:900px){.nav{flex-direction:column;gap:12px}.menu{text-align:center}.menu a{display:inline-block;margin:5px 8px}.hero-inner,.grid,.features{grid-template-columns:1fr}.hero h1{font-size:34px}.content{padding:26px}.sidebar{position:static}}