:root {
  color-scheme: dark;
  --bg: #0b0d0c;
  --surface: #131713;
  --surface-2: #191e1a;
  --line: #2b332d;
  --line-strong: #3b473f;
  --text: #eef4ea;
  --muted: #9fa89d;
  --quiet: #737d72;
  --mint: #58d7b2;
  --mint-ink: #06251e;
  --amber: #e8b84f;
  --coral: #f07167;
  --violet: #9c8cff;
  --sky: #68bdf6;
}

* { box-sizing: border-box; }

html { background: var(--bg); }

body {
  min-height: 100vh;
  margin: 0;
  background:
    linear-gradient(rgba(255,255,255,0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.022) 1px, transparent 1px),
    var(--bg);
  background-size: 48px 48px;
  color: var(--text);
  font-family: 'Paperlogy', 'Pretendard', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  letter-spacing: 0;
}

a { color: inherit; text-decoration: none; }

button,
input,
select,
textarea {
  font: inherit;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 2px;
}

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #090b0a; }
::-webkit-scrollbar-thumb { background: #39433b; border-radius: 8px; border: 2px solid #090b0a; }
::-webkit-scrollbar-thumb:hover { background: #4a574d; }

.dq-shell {
  width: min(1280px, calc(100% - 32px));
  margin-inline: auto;
}

.dq-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  background: rgba(11,13,12,0.88);
  backdrop-filter: blur(18px);
}

.dq-logo-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid rgba(88,215,178,0.35);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(88,215,178,0.24), rgba(104,189,246,0.08)),
    #101511;
  color: var(--mint);
}

.dq-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(19,23,19,0.94);
  box-shadow: 0 18px 48px rgba(0,0,0,0.28);
}

.dq-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(25,30,26,0.88);
}

.dq-muted { color: var(--muted); }
.dq-quiet { color: var(--quiet); }
.dq-mint { color: var(--mint); }
.dq-amber { color: var(--amber); }
.dq-coral { color: var(--coral); }
.dq-violet { color: var(--violet); }
.dq-sky { color: var(--sky); }

.dq-btn {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 8px;
  border: 1px solid transparent;
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 800;
  transition: transform 140ms ease, border-color 140ms ease, background 140ms ease, color 140ms ease;
}

.dq-btn:hover { transform: translateY(-1px); }
.dq-btn:disabled { cursor: wait; opacity: .65; transform: none; }
.dq-btn-primary { background: var(--mint); color: var(--mint-ink); }
.dq-btn-secondary { border-color: var(--line-strong); background: rgba(255,255,255,0.04); color: var(--text); }
.dq-btn-danger { border-color: rgba(240,113,103,0.38); background: rgba(240,113,103,0.12); color: var(--coral); }

.dq-badge {
  display: inline-flex;
  min-height: 24px;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  border: 1px solid var(--line);
  padding: 3px 9px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
}

.dq-badge.algorithm { border-color: rgba(104,189,246,.32); background: rgba(104,189,246,.11); color: var(--sky); }
.dq-badge.project { border-color: rgba(88,215,178,.32); background: rgba(88,215,178,.11); color: var(--mint); }
.dq-badge.interview { border-color: rgba(232,184,79,.34); background: rgba(232,184,79,.12); color: var(--amber); }
.dq-badge.local { border-color: rgba(156,140,255,.35); background: rgba(156,140,255,.12); color: var(--violet); }
.dq-badge.gold, .dq-badge.platinum { border-color: rgba(156,140,255,.35); background: rgba(156,140,255,.12); color: var(--violet); }

.dq-hero {
  display: grid;
  min-height: 520px;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.82fr);
  align-items: stretch;
  gap: 18px;
}

.dq-title {
  max-width: 760px;
  font-size: clamp(40px, 7vw, 88px);
  line-height: .94;
  letter-spacing: 0;
}

.dq-kpi {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.dq-path-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.dq-path-card,
.dq-focus-card {
  display: flex;
  min-height: 172px;
  flex-direction: column;
  align-items: flex-start;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(19,23,19,.92);
  padding: 18px;
  transition: transform 140ms ease, border-color 140ms ease, background 140ms ease;
}

.dq-focus-card { min-height: 154px; }

.dq-path-card:hover,
.dq-focus-card:hover {
  transform: translateY(-2px);
  border-color: rgba(88,215,178,.48);
  background: rgba(25,30,26,.96);
}

.dq-path-card strong,
.dq-focus-card strong {
  margin-top: 18px;
  color: var(--text);
  font-size: 18px;
  line-height: 1.25;
  font-weight: 900;
}

.dq-focus-card strong { font-size: 16px; }

.dq-path-card p,
.dq-focus-card p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.dq-path-card em {
  margin-top: auto;
  padding-top: 18px;
  color: var(--mint);
  font-size: 12px;
  font-style: normal;
  font-weight: 900;
}

.dq-rubric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.dq-rubric-grid span {
  min-height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(10,13,11,.58);
  color: var(--text);
  font-size: 12px;
  font-weight: 900;
}

.dq-route-item {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 10px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(10,13,11,.45);
  padding: 10px;
  transition: border-color 140ms ease, background 140ms ease;
}

.dq-route-item:hover {
  border-color: rgba(88,215,178,.42);
  background: rgba(88,215,178,.07);
}

.dq-route-num {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border-radius: 8px;
  background: rgba(88,215,178,.14);
  color: var(--mint);
  font-size: 12px;
  font-weight: 900;
}

.dq-route-item strong,
.dq-route-item em {
  display: block;
  line-height: 1.25;
}

.dq-route-item strong {
  color: var(--text);
  font-size: 13px;
  font-weight: 900;
}

.dq-route-item em {
  margin-top: 3px;
  color: var(--muted);
  font-size: 11px;
  font-style: normal;
  font-weight: 700;
}

.dq-visual {
  position: relative;
  overflow: hidden;
  min-height: 420px;
}

.dq-visual img {
  position: absolute;
  inset: 70px auto auto 44px;
  width: min(760px, 128%);
  max-width: none;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: 8px;
  box-shadow: 0 28px 80px rgba(0,0,0,.52);
}

.dq-code {
  font-family: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
  tab-size: 4;
  letter-spacing: 0;
}

.dq-editor {
  min-height: 430px;
  line-height: 1.62;
}

.line-numbers {
  overflow: hidden;
  counter-reset: line;
}

.line-numbers > div::before {
  counter-increment: line;
  content: counter(line);
  display: inline-block;
  width: 2.5rem;
  color: #596359;
  text-align: right;
  user-select: none;
}

.dq-input {
  min-height: 42px;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(10,13,11,.86);
  color: var(--text);
  padding: 10px 12px;
}

.dq-input::placeholder { color: var(--quiet); }

.dq-progress {
  height: 9px;
  overflow: hidden;
  border-radius: 999px;
  background: #293029;
}

.dq-progress > span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--mint), var(--amber));
}

.dq-score-ring {
  --score: 70;
  width: 112px;
  height: 112px;
  border-radius: 50%;
  background: conic-gradient(var(--mint) calc(var(--score) * 1%), rgba(255,255,255,.08) 0);
  display: grid;
  place-items: center;
}

.dq-score-ring::after {
  content: '';
  position: absolute;
  width: 82px;
  height: 82px;
  border-radius: 50%;
  background: var(--surface);
}

.dq-score-ring > span {
  position: relative;
  z-index: 1;
}

@media (max-width: 960px) {
  .dq-shell { width: min(100% - 24px, 1280px); }
  .dq-hero { grid-template-columns: 1fr; min-height: auto; }
  .dq-path-strip { grid-template-columns: 1fr; }
  .dq-visual { min-height: 330px; }
  .dq-visual img { inset: 34px auto auto 20px; width: 1040px; }
}

@media (max-width: 640px) {
  .dq-kpi { grid-template-columns: 1fr; }
  .dq-title {
    font-size: 34px;
    line-height: 1.14;
  }
  .dq-visual { min-height: 240px; }
  .dq-visual img { width: 760px; }
}