/* GUCupload 공개 소개 사이트 공통 스타일 (패널과 톤 통일) */
:root {
  --bg:#0b0d16; --panel:#141826; --panel2:#1c2233; --line:#2a3145;
  --text:#e6e9f2; --dim:#8b93a7; --accent:#ffd166; --blue:#4361ee; --green:#2a9d8f;
  --maxw:960px;
}
* { box-sizing:border-box; }
body {
  margin:0; background:var(--bg); color:var(--text);
  font:15px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif;
  -webkit-font-smoothing:antialiased;
}
a { color:#8fa6ff; }
a:hover { color:#b6c4ff; }
img { max-width:100%; }

/* header / nav */
.top { border-bottom:1px solid var(--line); background:rgba(11,13,22,.9); position:sticky; top:0; z-index:10; backdrop-filter:blur(8px); }
.top .inner { max-width:var(--maxw); margin:0 auto; padding:12px 18px; display:flex; align-items:center; gap:18px; flex-wrap:wrap; }
.brand { display:flex; align-items:center; gap:9px; font-weight:700; font-size:16px; color:var(--text); text-decoration:none; }
.brand .mark { width:26px; height:26px; border-radius:7px; background:linear-gradient(135deg,var(--blue),var(--green)); display:inline-block; }
.nav { display:flex; gap:16px; flex-wrap:wrap; margin-left:auto; }
.nav a { color:var(--dim); text-decoration:none; font-size:14px; }
.nav a:hover, .nav a.on { color:var(--text); }

/* layout */
.wrap { max-width:var(--maxw); margin:0 auto; padding:44px 18px 70px; }
.hero { padding:70px 18px 50px; max-width:var(--maxw); margin:0 auto; }
.hero h1 { font-size:34px; line-height:1.25; margin:0 0 16px; letter-spacing:-.5px; }
.hero p.lead { font-size:17px; color:var(--dim); margin:0 0 26px; max-width:620px; }
h2 { font-size:21px; margin:44px 0 12px; letter-spacing:-.3px; }
h3 { font-size:16px; margin:24px 0 8px; }
p { margin:0 0 14px; }
.dim { color:var(--dim); }
.small { font-size:13.5px; }

/* components */
.card { background:var(--panel); border:1px solid var(--line); border-radius:12px; padding:18px 20px; }
.grid { display:grid; gap:14px; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); margin:18px 0; }
.grid .card h3 { margin:0 0 6px; font-size:15px; }
.grid .card p { margin:0; color:var(--dim); font-size:13.5px; }
.btn { display:inline-block; background:var(--blue); color:#fff; text-decoration:none; padding:10px 18px; border-radius:9px; font-size:14px; font-weight:600; }
.btn:hover { background:#5470f5; color:#fff; }
.btn.ghost { background:transparent; border:1px solid var(--line); color:var(--text); }
.btn.ghost:hover { border-color:#3a4256; background:var(--panel); }
.btns { display:flex; gap:10px; flex-wrap:wrap; }
.tag { display:inline-block; font-size:12px; color:var(--accent); border:1px solid #3a3520; background:#1d1a10; padding:3px 10px; border-radius:20px; margin-bottom:16px; }

/* numbered steps */
ol.steps { counter-reset:s; list-style:none; padding:0; margin:18px 0; }
ol.steps li { counter-increment:s; position:relative; padding:0 0 0 44px; margin-bottom:20px; }
ol.steps li::before {
  content:counter(s); position:absolute; left:0; top:1px;
  width:28px; height:28px; border-radius:50%; background:var(--panel2); border:1px solid var(--line);
  display:flex; align-items:center; justify-content:center; font-size:13px; font-weight:700; color:var(--accent);
}
ol.steps li b { display:block; margin-bottom:3px; }
ol.steps li span { color:var(--dim); font-size:14px; }

/* mock screenshot */
.mock { background:var(--panel); border:1px solid var(--line); border-radius:12px; overflow:hidden; margin:20px 0; }
.mock .bar { background:var(--panel2); border-bottom:1px solid var(--line); padding:9px 13px; display:flex; gap:6px; align-items:center; }
.mock .bar i { width:10px; height:10px; border-radius:50%; background:#39405a; display:block; }
.mock .bar em { margin-left:10px; font-style:normal; font-size:12px; color:var(--dim); }
.mock .body { padding:16px; display:grid; gap:10px; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); }
.mock .row { background:var(--panel2); border:1px solid var(--line); border-radius:8px; padding:11px 13px; }
.mock .row b { display:block; font-size:12.5px; margin-bottom:6px; }
.mock .row span { display:block; font-size:11.5px; color:var(--dim); }
.mock .row .pill { display:inline-block; margin-top:8px; font-size:11px; padding:2px 9px; border-radius:12px; background:#1b2c46; color:#7fa8e8; }
.mock .row .pill.ok { background:#16302c; color:#54c3b3; }

/* faq */
details { border:1px solid var(--line); background:var(--panel); border-radius:10px; padding:14px 16px; margin-bottom:10px; }
details summary { cursor:pointer; font-weight:600; font-size:14.5px; list-style:none; }
details summary::-webkit-details-marker { display:none; }
details summary::before { content:"+ "; color:var(--accent); font-weight:700; }
details[open] summary::before { content:"− "; }
details p { margin:11px 0 0; color:var(--dim); font-size:14px; }

/* tables & lists */
table { width:100%; border-collapse:collapse; margin:16px 0; font-size:14px; }
th, td { text-align:left; padding:10px 12px; border-bottom:1px solid var(--line); vertical-align:top; }
th { color:var(--dim); font-weight:600; font-size:13px; }
ul.plain { padding-left:20px; color:var(--dim); font-size:14px; }
ul.plain li { margin-bottom:7px; }

/* legal docs */
.legal { max-width:760px; }
.legal h2 { font-size:18px; margin:32px 0 10px; }
.legal p, .legal li { font-size:14px; color:#c3c9d8; }

/* footer */
footer { border-top:1px solid var(--line); margin-top:40px; }
footer .inner { max-width:var(--maxw); margin:0 auto; padding:26px 18px 40px; display:flex; gap:20px; flex-wrap:wrap; align-items:flex-start; }
footer .fnav { display:flex; gap:16px; flex-wrap:wrap; margin-left:auto; }
footer a { color:var(--dim); text-decoration:none; font-size:13.5px; }
footer a:hover { color:var(--text); }
footer .copy { color:#5d6478; font-size:13px; }

@media (max-width:560px) {
  .hero { padding:44px 18px 34px; }
  .hero h1 { font-size:27px; }
  .nav { gap:12px; width:100%; margin-left:0; }
}