:root{
  --brand:#08857A; --brand-dark:#00675F; --brand-2:#2DD4BF; --mint:#77FFEA; --accent:#FFB020; --pink:#FF7A8A; --green:#22C58B;
  --bg:#FFFFFF; --bg-soft:#EFFBF9; --card:#FFFFFF; --text:#10302D; --muted:#4F6D69; --line:#D5EEEA;
  --shadow:0 10px 30px rgba(8,133,122,.12); --radius:20px;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){--bg:#0B1A19;--bg-soft:#10272A;--card:#133032;--text:#E8FFFB;--muted:#9CC7C1;--line:#1F4A48;--brand:#35D0BE;--brand-dark:#1FA899;--shadow:0 10px 30px rgba(0,0,0,.35)}
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);line-height:1.7;
  font-family:"Pretendard",-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none} a:hover{text-decoration:underline}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}

/* language toggle */
html[data-lang="ko"] [lang="en"]{display:none!important}
html[data-lang="en"] [lang="ko"]{display:none!important}

/* header */
header.site{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px;gap:12px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem;color:var(--text)}
.brand:hover{text-decoration:none}
.logo{width:36px;height:36px;display:block;object-fit:contain}
.nav ul{display:flex;gap:4px;list-style:none;margin:0;padding:0}
.nav ul a{display:block;padding:8px 14px;border-radius:999px;color:var(--muted);font-weight:600;font-size:.95rem}
.nav ul a:hover{background:var(--bg-soft);text-decoration:none}
.nav ul a.active{background:var(--bg-soft);color:var(--brand)}
.lang{border:1px solid var(--line);background:var(--card);color:var(--text);border-radius:999px;padding:6px 12px;font-weight:700;font-size:.85rem;cursor:pointer}
@media(max-width:720px){.nav{height:auto;padding:10px 0;flex-wrap:wrap}.nav ul{order:3;width:100%;overflow-x:auto}}

/* hero */
.hero{background:radial-gradient(900px 400px at 85% -10%,rgba(119,255,234,.45),transparent),radial-gradient(700px 400px at 5% 0,rgba(255,176,32,.14),transparent),var(--bg-soft);padding:72px 0 56px}
.hero .grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.pill{display:inline-block;padding:6px 14px;border-radius:999px;background:var(--card);border:1px solid var(--line);font-weight:700;font-size:.85rem;color:var(--brand)}
h1{font-size:clamp(2rem,5vw,3.2rem);line-height:1.2;margin:16px 0;letter-spacing:-.02em}
h1 em{font-style:normal;background:linear-gradient(90deg,var(--brand),var(--green));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:1.1rem;color:var(--muted);max-width:520px}
.btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 22px;border-radius:14px;font-weight:700;border:1px solid var(--line);background:var(--card);color:var(--text)}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn.primary{background:linear-gradient(135deg,var(--brand-2),var(--brand-dark));color:#fff;border:0;box-shadow:0 8px 20px rgba(8,133,122,.35)}
.badges{display:flex;gap:18px;margin-top:22px;color:var(--muted);font-size:.9rem;flex-wrap:wrap}

/* phone mock */
.phone{width:260px;margin:0 auto;border-radius:38px;border:8px solid #10302D;background:var(--card);box-shadow:var(--shadow);padding:18px 14px;transform:rotate(3deg)}
.phone .bar{height:6px;width:70px;background:#10302D;border-radius:9px;margin:0 auto 14px}
.m-card{border-radius:14px;padding:12px;margin-bottom:10px;color:#fff;font-size:.82rem;line-height:1.4}
.m-card b{display:block;font-size:.95rem}
.c1{background:linear-gradient(135deg,#2DC9B6,var(--brand-dark))} .c2{background:linear-gradient(135deg,#38BDF8,#0E7490)} .c3{background:linear-gradient(135deg,var(--accent),var(--pink))}

/* sections */
section{padding:64px 0}
section.soft{background:var(--bg-soft)}
.eyebrow{color:var(--brand);font-weight:800;font-size:.85rem;letter-spacing:.06em;text-transform:uppercase}
h2{font-size:clamp(1.5rem,3.4vw,2.1rem);margin:8px 0 12px;letter-spacing:-.01em}
.sub{color:var(--muted);max-width:620px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;margin-top:32px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.card h3{margin:14px 0 6px;font-size:1.1rem}
.card p{margin:0;color:var(--muted);font-size:.95rem}
.ico{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;font-size:1.4rem}
.i1{background:#CCFBF1}.i2{background:#CFFAFE}.i3{background:#FEF3C7}.i4{background:#FFE4E6}.i5{background:#D1FAE5}.i6{background:#E0F2FE}

/* page hero (sub pages) */
.page-hero{background:var(--bg-soft);padding:48px 0 36px;border-bottom:1px solid var(--line)}
.page-hero h1{font-size:clamp(1.8rem,4vw,2.5rem);margin:8px 0}
.meta{color:var(--muted);font-size:.9rem}

/* privacy layout */
.doc{display:grid;grid-template-columns:230px 1fr;gap:40px;padding:40px 0 72px}
.toc{position:sticky;top:90px;align-self:start;font-size:.92rem}
.toc a{display:block;padding:6px 12px;border-left:3px solid var(--line);color:var(--muted)}
.toc a:hover{color:var(--brand);border-color:var(--brand);text-decoration:none}
.doc article h2{margin-top:40px;padding-top:8px;font-size:1.35rem}
.doc article h2:first-child{margin-top:0}
.doc article ul{padding-left:20px}
.doc article li{margin:4px 0}
.summary{background:linear-gradient(135deg,rgba(45,212,191,.14),rgba(255,176,32,.08));border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-bottom:28px}
.summary h3{margin:0 0 10px}
.summary ul{list-style:none;padding:0;margin:0;display:grid;gap:8px}
table{width:100%;border-collapse:collapse;margin:12px 0;font-size:.93rem;background:var(--card);border-radius:14px;overflow:hidden;border:1px solid var(--line)}
th,td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--bg-soft);font-size:.85rem;color:var(--muted)}
tr:last-child td{border-bottom:0}
@media(max-width:820px){.hero .grid,.doc{grid-template-columns:1fr}.toc{position:static;display:flex;flex-wrap:wrap;gap:6px}.toc a{border:1px solid var(--line);border-radius:999px}.phone{transform:none}}

/* faq */
details{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px 20px;margin-bottom:12px}
summary{cursor:pointer;font-weight:700}
details[open] summary{color:var(--brand);margin-bottom:8px}
details p{margin:0;color:var(--muted)}
.contact{display:flex;gap:16px;align-items:center;flex-wrap:wrap;background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;border-radius:var(--radius);padding:28px}
.contact a.btn{background:#fff;color:#00675F;border:0}
.contact p{margin:4px 0 0;opacity:.9}

/* timeline */
.chips{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
.chip{background:var(--card);border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-weight:700;font-size:.85rem}
.timeline{position:relative;margin:40px 0 72px;padding-left:28px;border-left:3px solid var(--line)}
.rel{position:relative;margin-bottom:28px}
.rel::before{content:"";position:absolute;left:-38px;top:8px;width:16px;height:16px;border-radius:50%;background:var(--brand);border:4px solid var(--bg)}
.rel .head{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.ver{font-size:1.3rem;font-weight:800}
.tag{font-size:.75rem;font-weight:800;padding:3px 10px;border-radius:999px}
.t-new{background:#E0F2FE;color:#0369A1}.t-imp{background:#D1FAE5;color:#047857}.t-fix{background:#FEE2E2;color:#B91C1C}.t-latest{background:linear-gradient(90deg,var(--brand-2),var(--brand-dark));color:#fff}
.rel .card ul{margin:8px 0 14px;padding-left:20px;color:var(--text)}
.rel .card li{margin:3px 0;font-size:.95rem}
.rel h4{margin:12px 0 0;font-size:.9rem;color:var(--muted)}

/* footer */
footer.site{border-top:1px solid var(--line);padding:36px 0;color:var(--muted);font-size:.9rem;background:var(--bg-soft)}
footer .row{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
footer a{color:var(--muted);margin-right:14px}