:root{
  --bg:#f8fafc;
  --text:#1e293b;
  --muted:#64748b;
  --line:#e2e8f0;
  --card:#ffffff;
  --shadow: 0 10px 30px rgba(30,41,59,.1);
  --radius:16px;
  --primary:#3b82f6;
  --primary-dark:#2563eb;
  --secondary:#8b5cf6;
  --accent:#06b6d4;
  --gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  --gradient-subtle: linear-gradient(135deg, #eff6ff 0%, #f5f3ff 100%);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial; background:var(--bg); color:var(--text); line-height:1.5}
a{color:inherit}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}
.small{font-size:12px}
.muted{color:var(--muted)}
.sep{opacity:.6;margin:0 8px}

.topbar{background:var(--gradient);color:#fff;box-shadow:0 4px 12px rgba(59,130,246,.15)}
.topbar__inner{display:flex;justify-content:space-between;align-items:center;padding:12px 0;gap:12px;flex-wrap:wrap}
.topbar__link{color:rgba(255,255,255,.9);text-decoration:none;font-weight:500}
.topbar__link:hover{color:#fff;text-decoration:underline}

.nav{border-bottom:2px solid var(--primary); background:#fff; position:sticky; top:0; z-index:20; box-shadow:0 2px 8px rgba(59,130,246,.08)}
.nav__inner{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:16px 0}
.brand{text-decoration:none;display:flex;flex-direction:column;gap:2px}
.brand__name{font-weight:800;letter-spacing:.2px;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.brand__tag{font-size:12px;color:var(--muted)}
.nav__toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 10px}
.nav__menu{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.nav__menu a{color:var(--muted);text-decoration:none;font-size:14px;padding:10px 14px;border-radius:12px;font-weight:500;transition:all .2s}
.nav__menu a.active{color:#fff;background:var(--gradient);box-shadow:0 4px 12px rgba(59,130,246,.25)}
.nav__menu a:hover{color:var(--primary);background:var(--gradient-subtle)}

.hero{padding:60px 0;background:var(--gradient-subtle);position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-50%;right:-20%;width:600px;height:600px;background:radial-gradient(circle,rgba(139,92,246,.15),transparent);border-radius:50%;z-index:0}
.hero__grid{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:center;position:relative;z-index:1}
.hero h1{font-size:42px;line-height:1.1;margin:0 0 16px;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{margin:0 0 24px;color:var(--muted);max-width:62ch;font-size:17px}
.cta{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 20px;border-radius:12px;border:2px solid transparent;text-decoration:none;font-weight:600;transition:all .3s;box-shadow:0 2px 8px rgba(0,0,0,.08)}
.btn.primary{background:var(--gradient);color:#fff;border:none}
.btn.primary:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(59,130,246,.3)}
.btn.ghost{background:#fff;color:var(--primary);border-color:var(--line)}
.btn.ghost:hover{background:var(--gradient-subtle);border-color:var(--primary);transform:translateY(-2px)}
.hero__card{background:var(--card);border:2px solid var(--primary);border-radius:var(--radius);padding:18px;box-shadow:0 12px 32px rgba(59,130,246,.15)}
.hero__img{width:100%;height:240px;object-fit:cover;border-radius:14px;border:2px solid var(--line)}

.section{padding:50px 0}
.section h2{margin:0 0 20px;font-size:32px;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.grid3{display:grid;grid-template-columns:repeat(3, minmax(0,1fr));gap:20px}
.card{background:var(--card);border:2px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);transition:all .3s;position:relative;overflow:hidden}
.card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:var(--gradient);transform:scaleX(0);transition:transform .3s}
.card:hover{border-color:var(--primary);transform:translateY(-4px);box-shadow:0 16px 40px rgba(59,130,246,.2)}
.card:hover::before{transform:scaleX(1)}
.card h3{margin:0 0 10px;color:var(--primary);font-size:20px}
.card p{margin:0;color:var(--muted);line-height:1.6}
.card .card__link{margin-top:14px;display:inline-flex;align-items:center;gap:6px;color:var(--primary);text-decoration:none;font-weight:600;transition:gap .2s}
.card .card__link:hover{gap:10px}
.card .card__link::after{content:'→'}
.badges{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.badge{font-size:12px;color:var(--primary);border:1.5px solid var(--primary);padding:5px 12px;border-radius:999px;background:var(--gradient-subtle);font-weight:500}

.split{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
.list{margin:14px 0 0 20px;color:var(--muted)}
.faq details{border:2px solid var(--line);border-radius:14px;padding:16px;background:#fff;transition:all .3s}
.faq details[open]{border-color:var(--primary);box-shadow:0 4px 16px rgba(59,130,246,.15)}
.faq details+details{margin-top:12px}
.faq summary{cursor:pointer;font-weight:700;color:var(--primary);transition:color .2s}
.faq summary:hover{color:var(--primary-dark)}
.faq p{margin:12px 0 0;color:var(--muted);line-height:1.6}

.form{display:grid;gap:14px}
.input{width:100%;padding:13px 16px;border:2px solid var(--line);border-radius:12px;font-size:15px;transition:all .2s}
.input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(59,130,246,.1)}
textarea.input{min-height:140px;resize:vertical}
.notice{padding:14px 16px;border-radius:12px;background:linear-gradient(135deg,#ecfdf5,#d1fae5);border:2px solid #10b981;color:#065f46;font-weight:500}

.footer{margin-top:40px;border-top:3px solid transparent;background:#fff;position:relative}
.footer::before{content:'';position:absolute;top:-3px;left:0;right:0;height:3px;background:var(--gradient)}
.footer__grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:20px;padding:32px 0}
.footer__title{font-weight:800;margin-bottom:10px;color:var(--primary)}
.footer__bottom{padding:16px 0;border-top:2px solid var(--line);color:var(--muted)}

@media (max-width: 900px){
  .hero__grid{grid-template-columns:1fr}
  .grid3{grid-template-columns:1fr}
  .split{grid-template-columns:1fr}
  .nav__toggle{display:inline-flex}
  .nav__menu{display:none;flex-direction:column;align-items:stretch}
  .nav__menu.open{display:flex}
  .nav__menu a{width:100%}
}