:root{--bg:#f6f8fb;--ink:#122033;--muted:#5b6778;--brand:#0b5fff;--dark:#101827}*{box-sizing:border-box}body{margin:0;font-family:Inter,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}header{display:flex;justify-content:space-between;align-items:center;padding:18px 6%;background:#fff;position:sticky;top:0;z-index:9;box-shadow:0 2px 12px #0001}.brand{font-weight:800}nav a{margin-left:18px;color:var(--ink);text-decoration:none}.btn{display:inline-block;background:var(--brand);color:white!important;padding:13px 20px;border-radius:10px;text-decoration:none;border:0;font-weight:700}.small{padding:9px 13px}.ghost{background:white;color:var(--brand)!important;border:1px solid #cdd9ff}.hero{display:grid;grid-template-columns:1.6fr .9fr;gap:32px;padding:70px 6%;align-items:center}.hero h1{font-size:52px;line-height:1.05;margin:0 0 18px}.tag{color:var(--brand);font-weight:800;text-transform:uppercase;letter-spacing:.08em}.card,section{background:#fff;border-radius:24px;padding:32px;box-shadow:0 8px 30px #0000000d}section{margin:24px 6%}h2{font-size:34px;margin-top:0}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.grid>div{background:#f8faff;border:1px solid #e5ebff;border-radius:18px;padding:20px}.dark{background:var(--dark);color:white}.dark .grid>div{background:#1d2738;border-color:#2e3d55}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;list-style:none;padding:0}.steps li{background:#eef3ff;padding:20px;border-radius:16px;font-weight:700}.notice{background:#fff7e5;border:1px solid #ffd982;padding:18px;border-radius:14px}.formgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}input,select,textarea{width:100%;padding:14px;border:1px solid #d8deea;border-radius:10px;font-size:16px}textarea{min-height:120px;margin:12px 0}.hidden{display:none}#chat{position:fixed;right:18px;bottom:18px;z-index:20}#chatBtn{background:#0b5fff;color:white;border:0;border-radius:999px;padding:14px 18px;font-weight:800}#chatBox{display:none;width:330px;background:white;border-radius:18px;padding:18px;box-shadow:0 12px 40px #0003}#chatBox textarea{min-height:80px}footer{padding:30px 6%;color:var(--muted)}@media(max-width:850px){.hero,.grid,.steps,.formgrid{grid-template-columns:1fr}.hero h1{font-size:38px}nav{display:none}}