:root{
  --bg:#f7faf9; --surface:#ffffff; --ink:#10201c; --muted:#53655f; --line:#dbe6e2;
  --brand:#0f766e; --brand-ink:#ffffff; --brand-soft:#e3f4f1; --danger:#b42318; --ok:#067647;
  --radius:12px; --shadow:0 1px 2px rgba(16,32,28,.06),0 8px 24px rgba(16,32,28,.06);
}
@media (prefers-color-scheme:dark){
  :root{ --bg:#0c1513; --surface:#121f1c; --ink:#e8f1ee; --muted:#9db3ac; --line:#243732;
    --brand:#2dd4bf; --brand-ink:#04211d; --brand-soft:#12302b; --danger:#ff8a80; --ok:#6ee7a8; --shadow:none; }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 system-ui,-apple-system,"Apple SD Gothic Neo","Noto Sans KR",sans-serif}
a{color:var(--brand)}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
header.top{display:flex;justify-content:space-between;align-items:center;padding:18px 0}
.logo{font-weight:800;letter-spacing:-.02em;font-size:20px;text-decoration:none;color:var(--ink)}
.logo span{color:var(--brand)}
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:start;padding:28px 0 56px}
.hero h1{font-size:clamp(28px,4.6vw,44px);line-height:1.2;letter-spacing:-.03em;margin:8px 0 14px}
.hero p.lead{color:var(--muted);font-size:18px;margin:0 0 22px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 6px;padding:0;list-style:none}
.chips li{background:var(--brand-soft);color:var(--brand);border-radius:999px;padding:4px 12px;font-size:14px;font-weight:600}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}
.card h2{margin:0 0 4px;font-size:20px}
.card .sub{margin:0 0 18px;color:var(--muted);font-size:14px}
label{display:block;font-weight:600;font-size:14px;margin:14px 0 6px}
input[type=text],input[type=email],input[type=password]{width:100%;font:inherit;padding:11px 12px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink)}
input:focus-visible,button:focus-visible,a:focus-visible{outline:3px solid var(--brand);outline-offset:2px}
.slugrow{display:flex;align-items:center;border:1px solid var(--line);border-radius:10px;background:var(--bg);overflow:hidden}
.slugrow input{border:0;border-radius:0;background:transparent;flex:1;min-width:0}
.slugrow .suffix{padding:0 12px;color:var(--muted);white-space:nowrap;font-size:15px}
.hint{font-size:13px;min-height:20px;margin-top:6px;color:var(--muted)}
.hint.ok{color:var(--ok)} .hint.bad{color:var(--danger)}
.check{display:flex;gap:10px;align-items:flex-start;margin:16px 0 4px;font-weight:400;font-size:14px}
.check input{margin-top:4px;width:18px;height:18px;flex:none}
button.primary{width:100%;margin-top:16px;font:inherit;font-weight:700;padding:13px 16px;border:0;border-radius:10px;background:var(--brand);color:var(--brand-ink);cursor:pointer}
button.primary:disabled{opacity:.55;cursor:not-allowed}
.msg{margin-top:14px;font-size:14px}
.msg.bad{color:var(--danger)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;padding:0 0 48px}
.features .card{padding:20px}
.features h3{margin:0 0 6px;font-size:17px}
.features p{margin:0;color:var(--muted);font-size:15px}
.steps{padding:0 0 56px}
.steps h2{font-size:24px;letter-spacing:-.02em}
.steps ol{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;padding:0;margin:0;list-style:none;counter-reset:s}
.steps li{counter-increment:s;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.steps li::before{content:counter(s);display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--brand);color:var(--brand-ink);font-weight:700;margin-bottom:8px}
footer{border-top:1px solid var(--line);padding:24px 0 40px;color:var(--muted);font-size:14px}
footer a{color:var(--muted)}
.center{max-width:520px;margin:12vh auto;text-align:center}
.center h1{font-size:26px}
.spinner{width:36px;height:36px;border:4px solid var(--line);border-top-color:var(--brand);border-radius:50%;margin:0 auto 16px;animation:sp 1s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){.spinner{animation:none}}
.doc{max-width:720px;margin:0 auto;padding-bottom:48px}
.doc h1{font-size:28px} .doc h2{font-size:18px;margin-top:28px}
@media (max-width:820px){.hero{grid-template-columns:1fr;gap:24px;padding-top:8px}}
a.primary-link{display:inline-block;padding:12px 20px;background:var(--brand);color:var(--brand-ink);border-radius:10px;text-decoration:none;font-weight:700}