:root{--bg:#f4f7fb;--paper:#fff;--ink:#17202d;--muted:#65727f;--line:#d9e2ec;--blue:#1677ff;--blue-dark:#0c56c6;--soft:#eaf2ff}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:radial-gradient(circle at top left, #1677ff29, transparent 32rem), linear-gradient(180deg, #f8fbff 0%, var(--bg) 52%, #eef4fb 100%);min-height:100vh;color:var(--ink);margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans KR,Apple SD Gothic Neo,sans-serif}a{color:inherit;text-decoration:none}.site-shell{width:min(1040px,100% - 32px);margin:0 auto;padding:28px 0 56px}.hero,.doc-hero,.panel,.contact-band,.business-details{background:#ffffffe6;border:1px solid #b9c8d8b8;box-shadow:0 18px 46px #20344c14}.hero{border-radius:28px;padding:34px}.brand-row{align-items:center;gap:16px;display:flex}.brand-icon{background:url(/chait-app-icon.png) 50%/cover no-repeat;border-radius:16px;flex:none;width:58px;height:58px}.eyebrow{color:var(--blue-dark);letter-spacing:.08em;text-transform:uppercase;margin:0 0 7px;font-size:12px;font-weight:900}h1,h2,p{margin-top:0}h1{letter-spacing:0;margin-bottom:0;font-size:clamp(30px,5vw,54px);line-height:1.06}.hero-copy{max-width:730px;color:var(--muted);margin:24px 0 0;font-size:17px;font-weight:700;line-height:1.75}.quick-links{flex-wrap:wrap;gap:10px;margin-top:28px;display:flex}.quick-links a,.mail-button{background:var(--blue);color:#fff;border-radius:14px;justify-content:center;align-items:center;min-height:44px;padding:0 16px;font-size:14px;font-weight:900;display:inline-flex}.quick-links a:not(:first-child){background:var(--soft);color:var(--blue-dark)}.panel,.contact-band,.business-details{border-radius:24px;margin-top:18px;padding:24px}.panel.muted{background:#f4f8fceb}.section-heading h2,.contact-band h2,.doc-section h2{margin-bottom:8px;font-size:22px;line-height:1.3}.url-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:18px;display:grid}.url-card{border:1px solid var(--line);background:#fff;border-radius:18px;min-height:142px;padding:18px}.url-card span,.url-card strong,.url-card small{display:block}.url-card span{color:var(--blue-dark);font-size:13px;font-weight:900}.url-card strong{margin-top:8px;font-size:19px}.url-card small{color:var(--muted);margin-top:10px;font-size:12px;font-weight:700;line-height:1.55}.info-list p{color:var(--muted);margin:8px 0 0;font-size:15px;font-weight:700;line-height:1.7}.info-list a{color:var(--blue-dark);font-weight:900}.top-nav{justify-content:space-between;align-items:center;gap:18px;margin-bottom:18px;display:flex}.top-nav div{flex-wrap:wrap;justify-content:flex-end;gap:8px;display:flex}.home-link,.top-nav a:not(.home-link){border:1px solid var(--line);background:#ffffffd6;font-weight:900}.home-link{color:var(--blue-dark);border-radius:14px;padding:11px 15px}.top-nav a:not(.home-link){color:#506170;border-radius:12px;padding:9px 12px;font-size:13px}.top-nav a.active{background:var(--soft);color:var(--blue-dark);border-color:#1677ff66}.doc-hero{border-radius:26px;padding:30px}.doc-hero h1{max-width:760px}.doc-hero p{max-width:760px;color:var(--muted);margin:18px 0 0;font-size:16px;font-weight:700;line-height:1.7}.doc-hero span{background:var(--soft);color:var(--blue-dark);border-radius:12px;margin-top:18px;padding:8px 12px;font-size:12px;font-weight:900;display:inline-flex}.document{margin-top:18px}.doc-section{border:1px solid var(--line);background:#fff;border-radius:22px;margin-top:12px;padding:24px}.doc-section p,.doc-section li{color:#53616c;font-size:14px;font-weight:700;line-height:1.78}.doc-section p{margin-bottom:10px}.doc-section ul{margin:12px 0 0;padding-left:20px}.doc-section li+li{margin-top:7px}.contact-band{justify-content:space-between;align-items:center;gap:20px;display:flex}.contact-band p{color:var(--muted);margin-bottom:0;font-weight:700;line-height:1.65}.business-details{color:#61707d;font-size:13px;font-weight:700}.business-details summary{cursor:pointer;color:#465563;font-weight:900}.business-details dl{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 18px;margin:18px 0 0;display:grid}.business-details div{min-width:0}.business-details dt{color:#8a96a2;font-size:12px}.business-details dd{color:#43515e;margin:4px 0 0}@media (max-width:720px){.site-shell{width:min(100% - 24px,1040px);padding-top:18px}.hero,.doc-hero,.panel,.contact-band,.business-details,.doc-section{border-radius:20px}.hero,.doc-hero{padding:22px}.brand-row{align-items:flex-start}.brand-icon{border-radius:14px;width:48px;height:48px}.hero-copy,.doc-hero p{font-size:14px}.url-grid,.business-details dl{grid-template-columns:1fr}.top-nav,.contact-band{flex-direction:column;align-items:stretch}.top-nav div{justify-content:flex-start}.mail-button{width:100%}}