/* ============================================================
   CI Research — About Us · Concept Test solution page
   Same palette and type as ../styles.css (cool off-white, navy,
   one orange accent, Be Vietnam Pro only). Light only: the ECharts
   palette in concept.js is tuned for the light surface.
   ============================================================ */

:root{
  --navy:#16305e;
  --navy-deep:#0f2246;
  --orange:#f6931e;
  --gold:#ffb320;
  --cream:#f5f7fa;
  --paper:#eef1f6;
  --ink:#16305e;
  --ink-soft:rgba(22,48,94,.66);
  --hair:rgba(22,48,94,.12);
  --heat:#2a78d6;
  --shadow:0 1px 2px rgba(22,48,94,.05), 0 22px 50px -26px rgba(22,48,94,.32);
  --ease:cubic-bezier(.22,1,.36,1);
  font-synthesis:none;
}

*{ margin:0; padding:0; box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  font-family:"Be Vietnam Pro","Noto Sans KR",system-ui,-apple-system,sans-serif;
  background:var(--cream);
  color:var(--ink);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
html[lang="ko"] body{ word-break:keep-all; line-break:strict; }
a{ color:inherit; }
em{ font-style:normal; color:#c96d00; }
html[lang="ko"] em{ font-family:inherit; font-style:normal; font-weight:inherit; }

.ct-wrap{ width:min(1200px,100% - 32px); margin:0 auto; }

/* ── top bar ── */
.ct-bar{
  position:sticky; top:0; z-index:20;
  display:flex; align-items:center; gap:clamp(12px,2vw,24px);
  padding:12px clamp(16px,4vw,48px);
  background:rgba(245,247,250,.86);
  backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--hair);
}
.ct-logo img{ display:block; height:34px; width:auto; }
.ct-back{
  margin-right:auto; padding-left:clamp(12px,2vw,24px);
  border-left:1px solid var(--hair);
  font-size:14px; font-weight:600; text-decoration:none; color:var(--ink-soft);
}
.ct-back:hover{ color:var(--orange); }
.ct-langsw{
  display:flex; padding:3px; border-radius:999px;
  background:#fff; border:1px solid var(--hair);
}
.ct-langsw button{
  border:0; background:none; cursor:pointer;
  padding:6px 11px; border-radius:999px;
  font:600 12px/1 "Be Vietnam Pro",sans-serif; color:var(--ink-soft);
}
.ct-langsw button.on{ background:var(--navy-deep); color:#fff; }

/* ── atoms ── */
.ct-section{ padding:clamp(56px,9vw,104px) 0 0; scroll-margin-top:72px; }
.ct-kicker,.ct-eyebrow{
  display:inline-block; font-size:12px; font-weight:700;
  letter-spacing:.16em; text-transform:uppercase; color:var(--orange);
}
.ct-h2{
  margin-top:12px; max-width:20em;
  font-size:clamp(28px,3.6vw,48px); font-weight:800; line-height:1.1; letter-spacing:-.03em;
  color:var(--navy-deep); text-wrap:balance;
}
.ct-lede{ margin-top:14px; max-width:44em; font-size:16px; line-height:1.65; color:var(--ink-soft); }

.ct-btn{
  display:inline-flex; align-items:center; gap:10px;
  height:50px; padding:0 24px; border-radius:999px;
  font-size:15px; font-weight:600; text-decoration:none; white-space:nowrap;
  transition:transform .25s var(--ease), box-shadow .25s var(--ease);
}
.ct-btn:hover{ transform:translateY(-2px); }
.ct-btn--primary{
  color:#1b1206; background:#f08a12;
  box-shadow:0 14px 30px -14px rgba(240,138,18,.85);
}
.ct-btn--ghost{ color:var(--navy); background:#fff; border:1px solid var(--hair); }
.ct-btn--light{ color:var(--navy-deep); background:#fff; }
.ct-actions{ display:flex; flex-wrap:wrap; gap:12px; margin-top:32px; }

/* ── hero ── */
.ct-hero{
  padding:clamp(48px,8vw,96px) 0 0;
  background:
    radial-gradient(90% 70% at 92% 0%, rgba(246,147,30,.14) 0%, transparent 55%),
    radial-gradient(70% 60% at 0% 100%, rgba(22,48,94,.07) 0%, transparent 55%);
}
.ct-hero__grid{
  display:grid; grid-template-columns:1.15fr .85fr;
  gap:clamp(32px,5vw,72px); align-items:center;
}
.ct-hero__title{
  margin-top:18px;
  font-size:clamp(38px,5.4vw,72px); font-weight:800; line-height:1.04; letter-spacing:-.04em;
  color:var(--navy-deep); text-wrap:balance;
}
.ct-hero__sub{ margin-top:22px; max-width:32em; font-size:clamp(16px,1.4vw,19px); line-height:1.65; color:var(--ink-soft); }

.ct-score{
  padding:26px; border-radius:24px; background:#fff;
  border:1px solid var(--hair); box-shadow:var(--shadow);
}
.ct-score__head{ display:flex; justify-content:space-between; align-items:baseline; gap:12px; }
.ct-score__head strong{ font-size:16px; color:var(--navy-deep); }
.ct-score__head span{ font-size:12px; color:var(--ink-soft); }
.ct-score__list{ list-style:none; display:grid; gap:14px; margin-top:22px; }
.ct-score__list li{
  display:grid; grid-template-columns:minmax(0,1.3fr) minmax(0,1fr) 54px;
  gap:12px; align-items:center; font-size:14px;
}
.ct-score__list b{ text-align:right; font-variant-numeric:tabular-nums; color:var(--navy-deep); }
.ct-track{ height:8px; border-radius:999px; background:rgba(22,48,94,.07); overflow:hidden; }
.ct-fill{
  display:block; height:100%; border-radius:0 4px 4px 0;
  background:var(--orange);
  transform-origin:left; animation:ct-grow 1s var(--ease) .2s both;
}
.ct-score__foot{ margin-top:20px; padding-top:14px; border-top:1px solid var(--hair); font-size:12px; color:var(--ink-soft); }

/* ── challenge ── */
.ct-challenge__grid{ display:grid; grid-template-columns:1.1fr .9fr; gap:clamp(28px,5vw,64px); margin-top:16px; }
.ct-challenge__q{
  font-size:clamp(22px,2.6vw,34px); font-weight:700; line-height:1.3; letter-spacing:-.02em;
  color:var(--navy-deep);
}
.ct-challenge__a p{ font-size:16px; line-height:1.75; color:var(--ink-soft); }
.ct-challenge__a p + p{ margin-top:14px; }

/* ── criteria ── */
.ct-criteria{ display:grid; grid-template-columns:repeat(5,minmax(0,1fr)); gap:14px; margin-top:32px; }
.ct-crit{
  padding:24px 20px; border-radius:20px; background:#fff;
  border:1px solid var(--hair); box-shadow:var(--shadow);
  transition:transform .25s var(--ease);
}
.ct-crit:hover{ transform:translateY(-4px); }
.ct-num{
  display:block; font-size:34px; font-weight:800; line-height:1; letter-spacing:-.03em; color:var(--orange);
}
.ct-crit h3{ margin-top:18px; font-size:16px; line-height:1.3; color:var(--navy-deep); }
.ct-term{ display:block; margin-top:4px; font-size:12px; font-style:italic; color:var(--ink-soft); }
.ct-crit p{ margin-top:10px; font-size:13.5px; line-height:1.55; color:var(--ink-soft); }

/* ── why band ── */
.ct-why{
  margin-top:clamp(56px,9vw,104px);
  padding:clamp(48px,7vw,88px) 0;
  color:#fff;
  background:
    radial-gradient(70% 90% at 100% 0%, rgba(246,147,30,.3) 0%, transparent 60%),
    linear-gradient(135deg,var(--navy-deep),var(--navy));
}
.ct-why__quote{
  max-width:34em;
  font-size:clamp(22px,2.6vw,34px); font-weight:700; line-height:1.35; letter-spacing:-.015em;
}
.ct-why__quote::before{
  content:"“"; display:block; margin-bottom:6px;
  font-size:72px; font-weight:800; line-height:.6; color:var(--orange);
}
.ct-why__sub{ margin-top:18px; max-width:44em; font-size:16px; line-height:1.7; color:rgba(255,255,255,.75); }

/* ── facts ── */
.ct-facts{ display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:16px; }
.ct-fact{
  display:flex; flex-direction:column;
  padding:28px; border-radius:22px; background:#fff;
  border:1px solid var(--hair); box-shadow:var(--shadow);
}
.ct-fact h3{
  padding-bottom:14px; margin-bottom:14px; border-bottom:2px solid;
  border-image:linear-gradient(90deg,var(--orange),var(--gold)) 1;
  font-size:18px; color:var(--navy-deep);
}
.ct-fact p,.ct-fact li{ font-size:14.5px; line-height:1.65; color:var(--ink-soft); }
.ct-fact ul{ list-style:none; display:grid; gap:12px; }
.ct-fact li{ position:relative; padding-left:18px; }
.ct-fact li::before{
  content:""; position:absolute; left:0; top:.62em;
  width:7px; height:7px; border-radius:50%; background:var(--orange);
}
.ct-fact__big{ margin-top:auto; padding-top:18px; font-size:13px; color:var(--ink-soft); }
.ct-fact__big b{ font-size:30px; letter-spacing:-.03em; color:var(--navy-deep); }

/* ── questions ── */
.ct-questions{ list-style:none; display:grid; gap:12px; margin-top:28px; }
.ct-q{
  display:grid; grid-template-columns:56px minmax(0,1fr); gap:18px;
  padding:22px 24px; border-radius:20px; background:#fff; border:1px solid var(--hair);
}
.ct-q__num{
  display:grid; place-items:center; width:48px; height:48px; border-radius:14px;
  font-weight:700; color:var(--orange); background:rgba(246,147,30,.1);
}
.ct-q h3{ font-size:12.5px; font-weight:700; letter-spacing:.08em; text-transform:uppercase; color:var(--orange); }
.ct-q p{ margin:6px 0 16px; font-size:16px; font-weight:500; line-height:1.55; color:var(--navy-deep); }
.ct-scale{ display:flex; flex-wrap:wrap; align-items:center; gap:6px; }
.ct-scale span{ font-size:12.5px; color:var(--ink-soft); }
.ct-scale span:first-child{ margin-right:8px; }
.ct-scale span:last-child{ margin-left:8px; }
.ct-scale i{
  display:grid; place-items:center; width:32px; height:32px; border-radius:10px;
  font-style:normal; font-size:13px; font-weight:600;
  color:var(--ink-soft); background:var(--paper); border:1px solid var(--hair);
}
.ct-scale i:nth-of-type(4),.ct-scale i:nth-of-type(5){ color:#fff; background:var(--navy); border-color:var(--navy); }

/* ── results ── */
.ct-panel{
  margin-top:24px; padding:26px; border-radius:24px; background:#fff;
  border:1px solid var(--hair); box-shadow:var(--shadow); min-width:0;
}
.ct-panel__head{ display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:14px; margin-bottom:18px; }
.ct-panel__head--stack{ display:block; }
.ct-panel__head h3{ font-size:18px; color:var(--navy-deep); }
.ct-panel__head p{ margin-top:4px; font-size:13px; line-height:1.5; color:var(--ink-soft); }
.ct-tabs{ display:inline-flex; flex-wrap:wrap; gap:4px; padding:4px; border-radius:14px; background:var(--cream); }
.ct-tab{
  height:34px; padding:0 14px; border:0; border-radius:10px; background:none; cursor:pointer;
  font:600 13px/1 "Be Vietnam Pro","Noto Sans KR",sans-serif; color:var(--ink-soft);
}
.ct-tab:hover{ color:var(--navy-deep); }
.ct-tab.on{ background:#fff; color:var(--navy-deep); box-shadow:0 1px 3px rgba(22,48,94,.15); }
.ct-tab:focus-visible{ outline:2px solid var(--orange); outline-offset:1px; }
.ct-chart{ width:100%; }
.ct-chart--dist{ height:380px; }
.ct-chart--psm{ height:360px; }

.ct-kpis{
  display:flex; flex-wrap:wrap; align-items:flex-end; gap:14px 40px;
  margin-top:18px; padding-top:18px; border-top:1px solid var(--hair);
}
.ct-kpi{ display:flex; flex-direction:column; gap:4px; }
.ct-kpi span{ font-size:12.5px; color:var(--ink-soft); }
.ct-kpi span i{ font-style:normal; }
.ct-kpi b{ font-size:26px; letter-spacing:-.03em; color:var(--navy-deep); }
.ct-kpi small{ font-size:12px; color:var(--ink-soft); }
.ct-swatch{
  display:inline-block; width:10px; height:10px; margin-right:6px; vertical-align:-1px;
  border-radius:3px; background:rgba(42,120,214,.2); border:1px solid rgba(42,120,214,.45);
}
.ct-linkbtn{
  margin-left:auto; padding:9px 14px; border-radius:10px; cursor:pointer;
  border:1px solid var(--hair); background:none;
  font:600 13px/1 "Be Vietnam Pro","Noto Sans KR",sans-serif; color:var(--ink-soft);
}
.ct-linkbtn:hover{ color:var(--orange); border-color:var(--orange); }

.ct-table-wrap{ margin-top:16px; overflow-x:auto; }
.ct-table-wrap[hidden]{ display:none; }
.ct-table{ width:100%; border-collapse:separate; border-spacing:0; font-size:13px; font-variant-numeric:tabular-nums; }
.ct-table th,.ct-table td{ padding:10px 10px; text-align:right; white-space:nowrap; border-bottom:1px solid var(--hair); }
.ct-table thead th{ font-size:12px; font-weight:600; color:var(--ink-soft); }
.ct-table tbody th{ text-align:left; font-weight:600; color:var(--navy-deep); }
.ct-table td{ color:var(--ink-soft); }
.ct-table td b{ color:var(--navy-deep); }
.ct-heat td{
  color:var(--navy-deep); font-weight:600;
  border-bottom:2px solid #fff; border-right:2px solid #fff; border-radius:6px;
}
.ct-heat tbody th{ min-width:130px; }
.ct-heat .is-total{ font-weight:800; }

/* ── closing ── */
.ct-closing{
  display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:24px;
  padding:clamp(28px,4vw,48px); border-radius:28px; color:#fff;
  background:
    radial-gradient(60% 120% at 100% 100%, rgba(246,147,30,.35) 0%, transparent 60%),
    linear-gradient(135deg,var(--navy-deep),var(--navy));
}
.ct-closing h2{ font-size:clamp(24px,3vw,38px); font-weight:800; letter-spacing:-.03em; line-height:1.15; }
.ct-closing h2 em{ color:var(--gold); }
.ct-closing p{ margin-top:10px; max-width:32em; font-size:16px; line-height:1.6; color:rgba(255,255,255,.75); }
.ct-closing__actions{ display:flex; flex-direction:column; align-items:flex-start; gap:12px; }
.ct-closing__soon{ font-size:13px; color:rgba(255,255,255,.6); }

.ct-foot{ padding:48px 0 40px; font-size:13px; color:var(--ink-soft); }
.ct-foot a{ text-decoration:none; font-weight:600; }
.ct-foot a:hover{ color:var(--orange); }

@keyframes ct-grow{ from{ transform:scaleX(0); } }

/* ── responsive ── */
@media (max-width:1080px){
  .ct-criteria{ grid-template-columns:repeat(3,minmax(0,1fr)); }
}
@media (max-width:860px){
  .ct-hero__grid,.ct-challenge__grid{ grid-template-columns:1fr; }
  .ct-facts{ grid-template-columns:1fr; }
}
@media (max-width:600px){
  .ct-bar{ padding:10px 16px; }
  .ct-logo img{ height:28px; }
  .ct-back{ font-size:0; }
  .ct-back span[aria-hidden]{ font-size:18px; }
  .ct-criteria{ grid-template-columns:1fr 1fr; }
  .ct-q{ grid-template-columns:1fr; gap:12px; padding:20px; }
  .ct-panel{ padding:18px 14px; }
  .ct-chart--dist{ height:420px; }
  .ct-linkbtn{ margin-left:0; }
  .ct-btn{ height:46px; padding:0 20px; }
}

@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  .ct-fill{ animation:none; }
  .ct-btn,.ct-crit{ transition:none; }
}