:root{
  --brand-blue:#0b69d9;
  --brand-cyan:#00c6ff;
  --ink:#0b1a2b;
  --muted:#5b6b7a;
  --bg:#ffffff;
  --soft:#f5f8fc;
  --accent:#ff6b2d;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,Arial,Helvetica,sans-serif}
a{color:var(--brand-blue);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.header{
  position:sticky;top:0;z-index:10;background:#fff;border-bottom:1px solid #e8eef8
}
.header-inner{display:flex;align-items:center;gap:24px;padding:14px 0}
.header .logo{display:flex;align-items:center;gap:12px}
.header img{height:56px}
.search{margin-left:auto;display:flex;gap:8px}
.search input{padding:10px 12px;border:1px solid #cfe0ff;border-radius:8px;min-width:260px}
.search button{padding:10px 14px;border:0;border-radius:8px;background:var(--brand-blue);color:#fff;font-weight:600;cursor:pointer}
.nav{background:#f8fbff;border-bottom:1px solid #e8eef8}
.nav .container{display:flex;gap:18px;flex-wrap:wrap;padding:10px 20px}
.nav a{font-weight:600;color:#274764}
.hero{background:#eef6ff}
.hero .container{display:grid;grid-template-columns:1.2fr 1fr;align-items:center;gap:20px;padding:28px 0}
.hero img{width:100%;height:auto;border-radius:16px}
.btn{display:inline-block;background:linear-gradient(90deg,var(--brand-blue),var(--brand-cyan));color:#fff;border-radius:12px;padding:12px 18px;font-weight:700}
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid #e6eef9;border-radius:16px;overflow:hidden;box-shadow:0 1px 0 rgba(10,40,80,.02)}
.card .thumb{padding:16px;background:#f6faff}
.card .thumb img{width:100%;height:auto;display:block}
.card .body{padding:16px}
.sidebar-layout{display:grid;grid-template-columns:280px 1fr;gap:28px}
.sidebar{background:#fff;border:1px solid #e6eef9;border-radius:16px;padding:4px}
.sidebar h3{margin:12px 12px 6px 12px;font-size:16px;color:#274764}
.sidebar ul{list-style:none;margin:0;padding:6px}
.sidebar li{padding:10px 12px;border-radius:10px;color:#365370;cursor:pointer}
.sidebar li:hover{background:#f0f6ff}
.section{padding:48px 0}
.section h2{margin:0 0 16px 0;font-size:28px}
.lead{color:var(--muted);max-width:70ch}
.columns{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.badges{display:flex;gap:8px;flex-wrap:wrap}
.badge{background:#eef6ff;border:1px solid #d6e8ff;color:#274764;padding:6px 10px;border-radius:999px;font-size:12px}
.footer{margin-top:48px;background:#0b1730;color:#d1def0}
.footer a{color:#d1def0}
.footer .container{display:grid;grid-template-columns:1fr 1fr 1fr;gap:20px;padding:26px 20px}
.footer small{display:block;color:#9eb6d6;margin-top:8px}
.notice{background:#fff5e9;border:1px solid #ffe1c4;color:#8a4a00;padding:10px 12px;border-radius:10px}
.form input,.form textarea, .form select{
  width:100%;padding:12px;border:1px solid #cfe0ff;border-radius:10px
}
.form label{font-weight:600;color:#274764}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form button{padding:12px 16px;border:0;border-radius:10px;background:var(--brand-blue);color:#fff;font-weight:700;cursor:pointer}
hr.soft{border:0;border-top:1px solid #e6eef9;margin:18px 0}
.category-pill{display:inline-block;border:1px solid #cfe0ff;border-radius:999px;padding:6px 10px;margin-right:8px;margin-bottom:8px;color:#274764;background:#f7fbff}
@media (max-width: 980px) {
  .hero .container{grid-template-columns:1fr}
  .sidebar-layout{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr 1fr}
}
@media (max-width: 640px) {
  .grid-3{grid-template-columns:1fr}
  .form .row{grid-template-columns:1fr}
  .header img{height:44px}
  .search input{min-width:160px}
}