:root {
  --bg:#f6f6f9; --card:#ffffff; --ink:#191f28; --mute:#6b7684; --line:#e8eaf0; --soft:#f2f3f8;
  --accent:#6b4eff; --accent-soft:#efeaff; --grad:linear-gradient(135deg,#ff6b8b 0%,#7c5cff 100%);
  --ok:#12a150; --ok-soft:#e6f7ee; --err:#e5484d; --err-soft:#fdecec;
  --shadow:0 1px 2px rgba(25,31,40,.04),0 8px 24px rgba(25,31,40,.06);
  --r:20px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg:#0f1014; --card:#1a1b21; --ink:#f2f3f7; --mute:#9aa0ae; --line:#2a2c35; --soft:#22242c;
    --accent:#a495ff; --accent-soft:#2a2547; --ok:#4ade80; --ok-soft:#10261a; --err:#ff7b80; --err-soft:#2d1517;
    --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.35);
  }
}
* { box-sizing:border-box; }
html { -webkit-text-size-adjust:100%; }
body {
  margin:0; background:var(--bg); color:var(--ink);
  font:16px/1.65 "Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Noto Sans KR",sans-serif;
  letter-spacing:-.01em; -webkit-font-smoothing:antialiased;
}
a { color:var(--accent); text-underline-offset:3px; }

/* header */
.top { position:sticky; top:0; z-index:10; backdrop-filter:saturate(180%) blur(14px); -webkit-backdrop-filter:saturate(180%) blur(14px);
  background:var(--bg); background:color-mix(in srgb,var(--bg) 82%,transparent); border-bottom:1px solid var(--line); }
.top-in { max-width:640px; margin:0 auto; padding:14px 20px; }
.logo { display:inline-flex; align-items:center; gap:10px; font-weight:800; font-size:18px; color:var(--ink); text-decoration:none; letter-spacing:-.03em; }
.mark { position:relative; width:30px; height:20px; display:inline-block; }
.mark i { position:absolute; top:0; width:20px; height:20px; border-radius:50%; }
.mark i:first-child { left:0; background:#ff6b8b; }
.mark i:last-child { left:10px; background:#7c5cff; mix-blend-mode:multiply; opacity:.9; }
@media (prefers-color-scheme: dark) { .mark i:last-child { mix-blend-mode:screen; } }

.wrap { max-width:640px; margin:0 auto; padding:28px 20px 80px; }
.foot { text-align:center; color:var(--mute); font-size:13px; padding:8px 20px 40px; }

/* type */
h1 { font-size:30px; line-height:1.3; font-weight:800; letter-spacing:-.035em; margin:6px 0 14px; }
h2 { font-size:20px; font-weight:800; letter-spacing:-.025em; margin:36px 0 12px; }
.lead { font-size:17px; color:var(--mute); margin:0 0 20px; }
.hint { color:var(--mute); font-size:14px; line-height:1.55; }
em { font-style:normal; background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent; }

/* hero + steps */
.hero { padding:12px 0 8px; }
.eyebrow { display:inline-block; font-size:13px; font-weight:700; color:var(--accent); background:var(--accent-soft); padding:5px 12px; border-radius:999px; }
.hero h1 { font-size:36px; margin-top:16px; }
.steps { list-style:none; counter-reset:s; display:grid; gap:10px; padding:0; margin:24px 0 28px; }
.steps li { counter-increment:s; display:flex; gap:14px; align-items:flex-start; background:var(--card); border-radius:16px; padding:16px 18px; box-shadow:var(--shadow); font-size:15px; }
.steps li::before { content:counter(s); flex:none; width:26px; height:26px; border-radius:50%; background:var(--grad); color:#fff; font-weight:800; font-size:13px; display:grid; place-items:center; margin-top:1px; }

/* cards & sections */
.card { background:var(--card); border-radius:var(--r); padding:22px; margin:14px 0; box-shadow:var(--shadow); }
.card.ok { background:var(--ok-soft); box-shadow:none; }
.card.ok h2 { margin-top:0; }
form.card { background:transparent; box-shadow:none; padding:0; }
fieldset { border:0; margin:14px 0; padding:22px; background:var(--card); border-radius:var(--r); box-shadow:var(--shadow); min-width:0; }
legend { float:left; width:100%; padding:0; margin:0 0 6px; font-size:19px; font-weight:800; letter-spacing:-.025em; }
legend small { font-size:13px; font-weight:500; color:var(--mute); margin-left:4px; }
fieldset > legend + * { clear:both; }
.q, .cond { margin:20px 0 0; }
.qt { font-weight:700; margin-bottom:10px; font-size:15.5px; }

/* choice chips */
.opts { display:flex; flex-wrap:wrap; gap:8px; }
.opt { position:relative; display:inline-flex; cursor:pointer; }
.opt input { position:absolute; opacity:0; width:100%; height:100%; margin:0; cursor:pointer; }
.opt span { display:inline-block; padding:9px 15px; border-radius:999px; background:var(--soft); border:1.5px solid transparent; font-size:14.5px; font-weight:600; color:var(--mute); transition:all .12s ease; }
.opt:hover span { color:var(--ink); }
.opt input:checked + span { background:var(--accent-soft); border-color:var(--accent); color:var(--accent); }
.opt input:focus-visible + span { outline:3px solid color-mix(in srgb,var(--accent) 40%,transparent); outline-offset:2px; }
.opts .hint { align-self:center; margin-left:4px; }

.chk { display:flex; gap:10px; align-items:flex-start; margin:14px 0 0; font-size:14.5px; line-height:1.5; cursor:pointer; }
.chk input { flex:none; width:20px; height:20px; margin:1px 0 0; accent-color:var(--accent); }

/* inputs */
.condrow { display:flex; flex-wrap:wrap; gap:12px; margin-top:8px; }
.condrow label { display:flex; flex-direction:column; gap:6px; font-size:13px; font-weight:600; color:var(--mute); flex:1 1 140px; }
.block { display:block; margin:16px 0 0; font-size:13px; font-weight:600; color:var(--mute); }
input[type=text], input[type=password], input[type=email], input[type=number], select, textarea {
  width:100%; margin-top:6px; padding:14px 16px; border:1.5px solid transparent; border-radius:14px; background:var(--soft); color:var(--ink);
  font:inherit; font-size:16px; font-weight:500; outline:none; transition:border-color .12s, background .12s;
}
.condrow input, .condrow select { margin-top:0; }
input::placeholder, textarea::placeholder { color:var(--mute); opacity:.7; }
input:focus, select:focus, textarea:focus { border-color:var(--accent); background:var(--card); }
textarea { min-height:100px; resize:vertical; }
.share { font-family:ui-monospace,SFMono-Regular,Menlo,monospace; font-size:14px; }

/* buttons */
.btn { display:flex; align-items:center; justify-content:center; width:100%; min-height:56px; padding:14px 22px; margin-top:18px; border:0; border-radius:16px;
  background:var(--grad); color:#fff; font:inherit; font-size:17px; font-weight:800; letter-spacing:-.02em; cursor:pointer;
  box-shadow:0 8px 20px rgba(124,92,255,.28); transition:transform .1s ease, box-shadow .1s ease; }
.btn:hover { box-shadow:0 10px 26px rgba(124,92,255,.38); }
.btn:active { transform:scale(.985); }
.btn.ghost { background:var(--soft); color:var(--ink); box-shadow:none; }
.btn.danger { background:var(--err); box-shadow:none; }
.btn.small { display:inline-flex; width:auto; min-height:0; padding:6px 12px; margin:0; font-size:13px; border-radius:10px; box-shadow:none; }

/* messages */
.flash { padding:14px 16px; border-radius:14px; margin:14px 0; background:var(--card); box-shadow:var(--shadow); font-size:15px; font-weight:600; }
.flash.ok { background:var(--ok-soft); color:var(--ok); box-shadow:none; }
.flash.err { background:var(--err-soft); color:var(--err); box-shadow:none; }

/* result */
.score { font-size:64px; line-height:1; font-weight:800; letter-spacing:-.05em; background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent; margin:6px 0 4px; }
.score small { font-size:24px; margin-left:2px; }
.contact { font-size:20px; font-weight:700; word-break:break-all; background:var(--card); border-radius:14px; padding:16px; margin:14px 0; }
.ctype { display:inline-block; font-size:12px; font-weight:700; color:var(--accent); background:var(--accent-soft); border-radius:999px; padding:2px 10px; margin-right:8px; vertical-align:middle; }

/* tables (host / admin) */
.tbl { width:100%; border-collapse:collapse; font-size:14px; background:var(--card); border-radius:var(--r); overflow:hidden; box-shadow:var(--shadow); }
.tbl th, .tbl td { text-align:left; padding:12px 14px; border-bottom:1px solid var(--line); vertical-align:top; }
.tbl th { font-size:12px; color:var(--mute); font-weight:700; background:var(--soft); }
.tbl tr:last-child td { border-bottom:0; }
.inline { display:inline; }
.ans dt { font-weight:700; margin-top:10px; font-size:14px; }
.ans dd { margin:0; color:var(--mute); font-size:14px; }

.report { margin-top:44px; color:var(--mute); font-size:14px; }
.report summary { cursor:pointer; }

@media (min-width:640px) {
  .btn { width:auto; min-width:240px; }
  form .btn:only-child, fieldset + .btn { width:100%; }
}
@media (max-width:420px) {
  h1 { font-size:27px; } .hero h1 { font-size:31px; }
  fieldset { padding:18px; }
}

/* legal modal (works without JS via :target, JS adds .open) */
.noscroll { overflow:hidden; }
.modal { display:none; position:fixed; top:0; left:0; right:0; bottom:0; z-index:100; align-items:flex-end; justify-content:center; }
.modal:target, .modal.open { display:flex; }
.modal-bg { position:absolute; top:0; left:0; right:0; bottom:0; background:rgba(10,10,20,.55); }
.modal-box { position:relative; display:flex; flex-direction:column; width:100%; max-width:640px; max-height:88vh; background:var(--card); border-radius:24px 24px 0 0; box-shadow:var(--shadow); }
.modal-head { display:flex; align-items:center; justify-content:space-between; padding:18px 22px; border-bottom:1px solid var(--line); font-size:17px; }
.modal-close { color:var(--mute); font-weight:700; text-decoration:none; padding:4px 10px; border-radius:10px; background:var(--soft); font-size:14px; }
.modal-body { overflow-y:auto; padding:6px 22px 28px; -webkit-overflow-scrolling:touch; }
@media (min-width:700px) { .modal { align-items:center; } .modal-box { border-radius:24px; } }
.legal { font-size:14.5px; line-height:1.7; }
.legal h3 { font-size:15.5px; font-weight:800; margin:24px 0 6px; letter-spacing:-.02em; }
.legal p { margin:6px 0; }
.legal ol, .legal ul { margin:6px 0; padding-left:20px; }
.legal li { margin:4px 0; }
.legal-meta { color:var(--mute); font-size:13px; }
.legal-key { background:var(--accent-soft); border-radius:14px; padding:14px 16px; margin:14px 0; }
.legal-key ul { margin:6px 0 0; }
.foot a { color:var(--mute); margin:0 6px; }
.chk a { font-weight:700; }

.card.bookmark { background:var(--accent-soft); box-shadow:none; border:1.5px solid var(--accent); }
.card.bookmark .qt { color:var(--accent); }

.owner { display:flex; flex-wrap:wrap; align-items:center; gap:6px 12px; background:var(--soft); border-radius:14px; padding:12px 16px; margin:14px 0; }
.owner-link { font-weight:700; font-size:14.5px; }

/* nav, tooltip, board */
.top-in { display:flex; align-items:center; justify-content:space-between; }
.nav { font-size:14px; font-weight:700; color:var(--accent); background:var(--accent-soft); padding:7px 14px; border-radius:999px; text-decoration:none; }
.board-opt { display:flex; align-items:center; gap:8px; margin-top:16px; }
.board-opt .chk { margin:0; }
.tip { position:relative; display:inline-flex; }
.tip-i { width:20px; height:20px; padding:0; border-radius:50%; border:1.5px solid var(--mute); background:transparent; color:var(--mute); font:italic 700 12px/1 Georgia,serif; cursor:pointer; }
.tip-i:hover, .tip-i:focus { border-color:var(--accent); color:var(--accent); outline:none; }
.tip-body { display:none; position:absolute; left:50%; bottom:calc(100% + 10px); transform:translateX(-50%); width:260px; background:var(--ink); color:var(--bg); padding:11px 13px; border-radius:12px; font-size:13px; font-weight:500; line-height:1.5; z-index:20; box-shadow:var(--shadow); }
.tip-body::after { content:""; position:absolute; left:50%; top:100%; margin-left:-6px; border:6px solid transparent; border-top-color:var(--ink); }
.tip:hover .tip-body, .tip:focus-within .tip-body { display:block; }
.seats { display:inline-block; background:var(--accent-soft); color:var(--accent); font-weight:800; border-radius:999px; padding:4px 12px; font-size:13.5px; }
.seats.done { background:var(--soft); color:var(--mute); }
.card.closed { text-align:center; }
.board-list { display:grid; gap:12px; margin-top:18px; }
.board-item { display:block; background:var(--card); border-radius:var(--r); padding:18px 20px; box-shadow:var(--shadow); text-decoration:none; color:var(--ink); }
.board-item:hover { box-shadow:0 12px 30px rgba(25,31,40,.12); }
.board-item.closed { opacity:.6; }
.board-title { font-weight:800; font-size:17px; letter-spacing:-.02em; margin-bottom:4px; }
.board-intro { color:var(--mute); font-size:14.5px; margin-bottom:10px; }
.board-meta { display:flex; justify-content:space-between; align-items:center; font-size:13px; color:var(--mute); }

/* admin: readable compare view */
.stat-row { display:grid; grid-template-columns:repeat(auto-fit,minmax(120px,1fr)); gap:10px; margin:14px 0; }
.stat { background:var(--card); border-radius:16px; padding:14px 16px; box-shadow:var(--shadow); }
.stat b { display:block; font-size:22px; letter-spacing:-.03em; }
.stat span { font-size:12.5px; color:var(--mute); font-weight:600; }
.app-head { display:flex; align-items:center; gap:12px; flex-wrap:wrap; margin-bottom:8px; }
.app-score { font-size:34px; font-weight:800; letter-spacing:-.04em; background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent; }
.st { display:inline-block; font-size:12.5px; font-weight:800; padding:3px 10px; border-radius:999px; background:var(--soft); color:var(--mute); }
.st.matched { background:var(--ok-soft); color:var(--ok); }
.st.closed, .st.filter { background:var(--err-soft); color:var(--err); }
details.cmp-wrap { margin-top:10px; }
details.cmp-wrap summary { cursor:pointer; font-weight:700; color:var(--accent); font-size:14.5px; }
.legal-spacer { height:4px; }
table.cmp { width:100%; border-collapse:collapse; font-size:13.5px; margin:6px 0 14px; }
table.cmp th, table.cmp td { text-align:left; padding:8px 8px; border-bottom:1px solid var(--line); vertical-align:top; }
table.cmp thead th { font-size:12px; color:var(--mute); }
table.cmp tbody th { font-weight:600; width:38%; }
h4 { font-size:14.5px; margin:18px 0 4px; }
h4 small { color:var(--mute); font-weight:500; }
.k { display:inline-block; min-width:48px; color:var(--mute); font-size:12px; font-weight:700; }
.skip { color:var(--mute); opacity:.7; }
.mt { display:inline-block; font-size:12px; font-weight:800; padding:2px 9px; border-radius:999px; white-space:nowrap; }
.mt.same { background:var(--ok-soft); color:var(--ok); }
.mt.near { background:#fff4d6; color:#a16207; }
.mt.diff { background:var(--err-soft); color:var(--err); }
.mt.skip { background:var(--soft); color:var(--mute); opacity:1; }
@media (prefers-color-scheme: dark) { .mt.near { background:#3a2f10; color:#fbbf24; } }
.cta { text-align:center; background:var(--accent-soft); box-shadow:none; }
.cta h2 { margin:0 0 6px; }

.dev { word-break:break-all; }