:root {
  --bg: #f4f6fb;
  --surface: #ffffff;
  --surface-2: #eef1f8;
  --text: #16202f;
  --muted: #4a5568;
  --border: #d4dae6;
  --accent: #2443b8;
  --accent-ink: #ffffff;
  --accent-soft: #e3e9fb;
  --pole-a: #2443b8;
  --pole-b: #b4235a;
  --pole-a-soft: #dfe6fb;
  --pole-b-soft: #f8dfe9;
  --focus: #f0a400;
  --notice-bg: #fff6e0;
  --notice-border: #e6c470;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 4px 16px rgba(15, 23, 42, .06);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e131c;
    --surface: #171e2b;
    --surface-2: #1f2838;
    --text: #e8edf6;
    --muted: #aab4c5;
    --border: #2f3a4e;
    --accent: #8ea6ff;
    --accent-ink: #0e131c;
    --accent-soft: #24304d;
    --pole-a: #8ea6ff;
    --pole-b: #ff8fb8;
    --pole-a-soft: #24304d;
    --pole-b-soft: #3d2332;
    --focus: #ffc94a;
    --notice-bg: #2c2615;
    --notice-border: #6e5a24;
    --shadow: none;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
:lang(en) body, html:lang(en) body { word-break: normal; }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip { position: absolute; left: 8px; top: -60px; background: var(--accent); color: var(--accent-ink); padding: 8px 12px; border-radius: 8px; z-index: 10; }
.skip:focus { top: 8px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
[tabindex="-1"]:focus { outline: none; }

.topbar {
  display: flex; align-items: center; gap: 10px;
  max-width: 760px; margin: 0 auto; padding: 14px 16px;
}
.brand { color: var(--accent); display: flex; }
.brand-name { font-weight: 700; font-size: 15px; flex: 1; min-width: 0; }
.lang-btn {
  font: inherit; font-size: 14px; font-weight: 600;
  color: var(--text); background: var(--surface);
  border: 1px solid var(--border); border-radius: 999px;
  padding: 6px 14px; cursor: pointer; min-height: 36px;
}
.lang-btn:hover { border-color: var(--accent); }

main { max-width: 760px; margin: 0 auto; padding: 0 16px 24px; }
.screen { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 28px 24px; }
@media (max-width: 480px) { .screen { padding: 22px 16px; } }

.eyebrow { margin: 0 0 6px; font-size: 14px; font-weight: 700; letter-spacing: .04em; color: var(--accent); text-transform: uppercase; }
h1 { margin: 0 0 12px; font-size: clamp(26px, 6vw, 36px); line-height: 1.25; }
h2 { margin: 0; font-size: 22px; line-height: 1.35; }
h3 { margin: 0 0 10px; font-size: 16px; }
.lead { margin: 0 0 18px; color: var(--muted); font-size: 17px; }
.meta { color: var(--muted); font-size: 14px; margin: 14px 0 18px; }
.small { color: var(--muted); font-size: 14px; margin: 10px 0 0; }

.axis-preview { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.axis-preview li { background: var(--surface-2); border-radius: 10px; padding: 10px 12px; font-size: 14px; }
.axis-preview b { color: var(--accent); }
@media (max-width: 420px) { .axis-preview { grid-template-columns: 1fr; } }

.btn {
  font: inherit; font-weight: 600; font-size: 16px;
  min-height: 44px; padding: 10px 18px;
  border-radius: 10px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); cursor: pointer;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.big { width: 100%; font-size: 18px; min-height: 52px; }
.btn.ghost { background: transparent; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }

.notice { margin: 20px 0 0; padding: 12px 14px; background: var(--notice-bg); border: 1px solid var(--notice-border); border-radius: 10px; font-size: 14px; }

/* progress */
.progress-wrap { margin-bottom: 18px; }
.progress-label { display: flex; justify-content: space-between; font-size: 14px; color: var(--muted); margin-bottom: 6px; font-variant-numeric: tabular-nums; }
.progress { height: 10px; background: var(--surface-2); border-radius: 999px; overflow: hidden; }
.progress-fill { height: 100%; width: 0; background: var(--accent); border-radius: 999px; transition: width .25s ease; }

.q-prompt { margin-bottom: 16px; }
.options { display: grid; gap: 10px; margin-bottom: 18px; }
.opt { display: flex; gap: 12px; align-items: flex-start; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--border); }
.opt p { margin: 0; }
.opt-a { background: var(--pole-a-soft); }
.opt-b { background: var(--pole-b-soft); }
.opt-tag { flex: none; width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; font-weight: 800; font-size: 14px; color: #fff; }
.opt-a .opt-tag { background: var(--pole-a); }
.opt-b .opt-tag { background: var(--pole-b); }
@media (prefers-color-scheme: dark) { .opt-tag { color: #0e131c; } }

.scale { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 8px; }
.scale-btn {
  font: inherit; font-size: 14px; line-height: 1.3; font-weight: 600;
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  padding: 10px 4px; min-height: 84px; border-radius: 12px;
  border: 2px solid var(--border); background: var(--surface); color: var(--text); cursor: pointer;
  text-align: center;
}
.scale-btn .dot-box { display: flex; align-items: center; justify-content: center; width: 28px; height: 28px; flex: none; }
.scale-btn .dot { display: block; border-radius: 50%; border: 2px solid currentColor; flex: none; }
.scale-btn[data-v="0"] .dot, .scale-btn[data-v="4"] .dot { width: 26px; height: 26px; }
.scale-btn[data-v="1"] .dot, .scale-btn[data-v="3"] .dot { width: 20px; height: 20px; }
.scale-btn[data-v="2"] .dot { width: 14px; height: 14px; }
.scale-btn[data-v="0"], .scale-btn[data-v="1"] { color: var(--pole-a); }
.scale-btn[data-v="3"], .scale-btn[data-v="4"] { color: var(--pole-b); }
.scale-btn[data-v="2"] { color: var(--muted); }
.scale-btn .lbl { color: var(--text); }
.scale-btn:hover { border-color: currentColor; }
.scale-btn[aria-pressed="true"] { border-color: currentColor; background: var(--surface-2); }
.scale-btn[aria-pressed="true"] .dot { background: currentColor; }
.scale-btn .num { font-size: 12px; color: var(--muted); font-weight: 500; }
@media (max-width: 520px) {
  .scale { grid-template-columns: 1fr; gap: 6px; }
  .scale-btn { flex-direction: row; min-height: 48px; padding: 8px 14px; justify-content: flex-start; gap: 12px; }
  .scale-btn .num { margin-left: auto; }
}
.kbd-hint { font-size: 13px; color: var(--muted); margin: 12px 0 0; }
@media (hover: none) { .kbd-hint { display: none; } }
.nav-row { display: flex; justify-content: space-between; gap: 10px; margin-top: 14px; }

/* result */
.result-head { display: flex; align-items: center; gap: 18px; margin-bottom: 18px; }
.code {
  flex: none; font-size: 34px; font-weight: 800; letter-spacing: .06em;
  background: var(--accent); color: var(--accent-ink); border-radius: 14px; padding: 10px 16px;
  font-variant-numeric: tabular-nums;
}
.tagline { margin: 4px 0 0; color: var(--muted); }
@media (max-width: 420px) { .result-head { flex-direction: column; align-items: flex-start; gap: 10px; } .code { font-size: 30px; } }

.card { border: 1px solid var(--border); border-radius: 12px; padding: 16px; margin-top: 14px; background: var(--surface); }
.card p { margin: 0; }
.grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.grid2 .card { margin-top: 14px; }
@media (max-width: 600px) { .grid2 { grid-template-columns: 1fr; gap: 0; } }

.axes { display: grid; gap: 14px; }
.axis-row .axis-labels { display: flex; justify-content: space-between; gap: 8px; font-size: 14px; margin-bottom: 4px; }
.axis-row .axis-labels span { min-width: 0; }
.axis-row .r { text-align: right; }
.axis-row .win { font-weight: 800; }
.axis-row .pa { color: var(--pole-a); }
.axis-row .pb { color: var(--pole-b); }
.axis-bar { display: flex; height: 14px; border-radius: 999px; overflow: hidden; background: var(--surface-2); }
.axis-bar .ba { background: var(--pole-a); }
.axis-bar .bb { background: var(--pole-b); }
.axis-bar .lose { opacity: .35; }

.list { margin: 0; padding-left: 20px; }
.list li + li { margin-top: 4px; }
.chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li { background: var(--accent-soft); color: var(--text); border-radius: 999px; padding: 4px 12px; font-size: 14px; }
.sci { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.sci li { background: var(--surface-2); border-radius: 10px; padding: 10px 12px; }
.sci b { display: block; }

textarea {
  width: 100%; font: inherit; font-size: 14px; line-height: 1.5;
  color: var(--text); background: var(--surface-2);
  border: 1px solid var(--border); border-radius: 10px; padding: 10px; resize: vertical;
}
.status { min-height: 1.4em; font-size: 14px; color: var(--accent); margin: 8px 0 0; }

.all-types summary { cursor: pointer; font-weight: 700; min-height: 32px; }
.type-grid { list-style: none; padding: 0; margin: 12px 0 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.type-grid li { background: var(--surface-2); border-radius: 8px; padding: 8px 10px; font-size: 14px; }
.type-grid li.me { outline: 2px solid var(--accent); }
.type-grid b { margin-right: 6px; color: var(--accent); }
@media (max-width: 420px) { .type-grid { grid-template-columns: 1fr; } }

.foot { max-width: 760px; margin: 0 auto; padding: 4px 16px 28px; font-size: 13px; color: var(--muted); text-align: center; }

@media (prefers-reduced-motion: reduce) { .progress-fill { transition: none; } }

/* LABSONA (2026-11-01, lane FQUIZ): measure box, free pill, share row, paper CTA, static type/method pages */
.free-pill { display: inline-block; margin: 0 0 10px; padding: 4px 12px; border-radius: 999px; background: #ffd43b; color: #1b1400; font-size: 14px; font-weight: 800; }
.measure { margin: 0 0 18px; padding: 14px 16px; border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: 10px; background: var(--surface-2); }
.measure h2 { margin: 0 0 6px; font-size: 16px; }
.measure ul { margin: 0; padding-left: 20px; font-size: 15px; }
.measure li { margin: 2px 0; }
.measure .small { margin: 8px 0 0; }
.privacy { margin: 14px 0 0; color: var(--muted); }
.share-row { margin-top: 16px; }
.share-row .btn { flex: 1 1 auto; text-align: center; text-decoration: none; }
a.btn { display: inline-flex; align-items: center; justify-content: center; text-decoration: none; color: inherit; }
a.btn.primary { color: var(--accent-ink); }
.paper-cta { border-color: var(--accent); background: var(--accent-soft); }
.paper-cta h2, .paper-cta h3 { margin: 0 0 6px; }
.paper-cta-text { margin: 0 0 4px; }
.prog-row { margin: 10px 0 0; color: var(--muted); }
.prog-link { display: inline-block; margin: 2px 8px 2px 0; color: var(--accent); font-weight: 600; }
.brand-link { color: inherit; text-decoration: none; }
.type-page h1, .method-page h1 { font-size: clamp(24px, 5.6vw, 32px); }
.type-page h2, .method-page h2 { margin: 0 0 8px; font-size: 18px; }
.type-page .btn-row { margin-top: 18px; }
.free-line { margin: 8px 0 0; font-weight: 700; color: var(--accent); }
.cr-self { text-align: center; margin: 8px auto 0; max-width: 420px; color: var(--muted); }