:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-alt: #eef4ff;
  --ink: #0a0f1a;
  --muted: #4d5a73;
  --line: #cad6ea;
  --line-strong: #0a0f1a;
  --accent: #0052cc;
  --accent-soft: #dfeaff;
  --success: #0f8a5f;
  --radius: 4px;
  --shadow: none;
  --max-width: 1240px;
  --ease: cubic-bezier(.22,1,.36,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    linear-gradient(180deg, rgba(244,247,251,0.94) 0%, rgba(244,247,251,0.94) 100%),
    repeating-linear-gradient(90deg, rgba(10,15,26,0.03) 0 1px, transparent 1px 120px);
  color: var(--ink);
  font-family: 'Pretendard', 'Noto Sans KR', 'Spoqa Han Sans Neo', sans-serif;
  line-height: 1.6;
}

img { display: block; width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }

.page-shell { min-height: 100vh; }
.section {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
  padding: 32px 0;
}

.site-header {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
  padding: 20px 0 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.eyebrow,
.kicker,
.section-label,
.mini-label,
.feature-index,
.progress-text,
.question-index,
.nds-meta,
.nds-brand,
.site-footer {
  letter-spacing: 0.02em;
}

.eyebrow,
.section-label,
.kicker,
.feature-index,
.mini-label {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

.text-link {
  background: transparent;
  border: 0;
  padding: 0;
  color: var(--accent);
  font-weight: 700;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 32px;
  align-items: end;
  min-height: calc(100vh - 120px);
  padding-top: 40px;
}

.hero-copy h1 {
  margin: 10px 0 18px;
  font-size: clamp(44px, 8vw, 92px);
  line-height: 0.94;
  max-width: 9ch;
}

.hero-body {
  max-width: 56ch;
  font-size: 18px;
  color: var(--muted);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 28px;
}

.hero-meta span,
.archetype-stack span {
  border: 1px solid var(--line-strong);
  background: var(--surface);
  padding: 8px 12px;
  border-radius: var(--radius);
}

.hero-actions,
.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-height: 48px;
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
  padding: 12px 18px;
  transition: transform 220ms var(--ease), background-color 220ms var(--ease), color 220ms var(--ease), border-color 220ms var(--ease);
}

.button:hover,
.button:focus-visible { transform: translateY(-2px); }
.button:focus-visible,
.text-link:focus-visible,
.option-button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.button-primary {
  background: var(--accent);
  color: #ffffff;
}

.button-secondary {
  background: var(--surface);
  color: var(--ink);
}

.button-large {
  width: fit-content;
  min-width: 220px;
}

.hero-visual {
  position: relative;
  padding: 48px 0 0 56px;
}

.hero-image-frame {
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
}

.hero-image-frame img {
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.hero-stat-card {
  position: absolute;
  left: 0;
  bottom: 36px;
  width: min(78%, 320px);
  padding: 18px;
  border: 1px solid var(--line-strong);
  background: var(--surface-alt);
  border-radius: var(--radius);
}

.stat-label,
.stat-body,
.mix-note,
.team-insight,
.share-status,
.site-footer p,
.panel-header p,
.feature-copy p,
.question-helper,
.result-summary,
.nds-copy {
  color: var(--muted);
}

.stat-value,
.mono-value {
  margin: 6px 0;
  font-family: 'SFMono-Regular', 'Consolas', 'Liberation Mono', monospace;
  font-size: 28px;
  font-weight: 700;
}

.feature-strip {
  padding-top: 0;
}

.feature-card {
  display: grid;
  grid-template-columns: minmax(0, 0.7fr) minmax(280px, 0.95fr);
  gap: 24px;
  margin-bottom: 28px;
  align-items: end;
}

.feature-card-reverse {
  grid-template-columns: minmax(280px, 0.92fr) minmax(0, 0.72fr);
}

.feature-copy {
  padding: 16px 0;
}

.feature-copy h2,
.panel-header h2,
.mix-header h3,
.insight-card h3,
.result-hero h2 {
  margin: 8px 0 12px;
  line-height: 1.05;
}

.feature-copy h2 {
  font-size: clamp(28px, 4vw, 52px);
  max-width: 12ch;
}

.feature-image {
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
}

.feature-image img {
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.app {
  padding-top: 20px;
}

.panel {
  border: 1px solid var(--line-strong);
  background: rgba(255,255,255,0.92);
  border-radius: var(--radius);
  padding: 24px;
  overflow: hidden;
}

.panel[hidden] { display: none; }
.panel.active {
  animation: panel-rise 520ms var(--ease);
}

.landing-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(260px, 0.72fr);
  gap: 18px;
  margin: 24px 0 24px;
}

.landing-card,
.result-actions-card,
.insight-card,
.mix-card {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: var(--radius);
  padding: 18px;
}

.landing-card ul,
.insight-list {
  margin: 16px 0 0;
  padding-left: 18px;
}

.landing-card-accent {
  background: linear-gradient(180deg, #ffffff 0%, #eef4ff 100%);
}

.archetype-stack {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.question-topbar,
.mix-header,
.result-strength-row {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: end;
}

.progress-track {
  margin: 18px 0 26px;
  width: 100%;
  height: 10px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  overflow: hidden;
  background: var(--surface);
}

.progress-bar {
  height: 100%;
  width: 10%;
  background: linear-gradient(90deg, var(--accent) 0%, #4c92ff 100%);
  transition: width 340ms var(--ease);
}

.question-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(300px, 1fr);
  gap: 28px;
  align-items: start;
}

.question-title,
#question-title {
  font-size: clamp(30px, 4.3vw, 56px);
  line-height: 1.02;
  margin: 10px 0;
  max-width: 12ch;
}

.question-options {
  display: grid;
  gap: 12px;
}

.option-button {
  width: 100%;
  min-height: 58px;
  text-align: left;
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  transition: transform 220ms var(--ease), border-color 220ms var(--ease), background-color 220ms var(--ease);
}

.option-button:hover,
.option-button.is-selected {
  transform: translateX(8px);
  border-color: var(--line-strong);
  background: var(--surface-alt);
}

.question-actions {
  margin-top: 20px;
}

.result-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(300px, 0.65fr);
  gap: 18px;
}

.result-hero {
  border: 1px solid var(--line-strong);
  background:
    linear-gradient(135deg, rgba(223,234,255,0.95) 0%, rgba(255,255,255,0.98) 60%),
    #ffffff;
  padding: 22px;
}

.result-hero h2 {
  font-size: clamp(40px, 6vw, 76px);
}

.mix-card {
  margin-top: 18px;
}

.mix-bars {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.mix-row {
  display: grid;
  grid-template-columns: 140px 1fr 62px;
  gap: 12px;
  align-items: center;
}

.mix-label,
.mix-value {
  font-family: 'SFMono-Regular', 'Consolas', 'Liberation Mono', monospace;
}

.mix-track {
  height: 14px;
  background: #edf2fb;
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
}

.mix-fill {
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--accent) 0%, #78a6ff 100%);
  transition: width 700ms var(--ease);
}

.insight-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.insight-card {
  min-height: 100%;
}

.nds-band {
  margin-top: 18px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 24px;
  background: var(--surface-alt);
}

.nds-title {
  margin: 0;
  font-size: clamp(24px, 3vw, 38px);
  font-weight: 700;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  font-size: 13px;
  padding-top: 6px;
  padding-bottom: 36px;
}

.tilt-card {
  transform: translate3d(0, 0, 0);
  transition: transform 360ms var(--ease), border-color 360ms var(--ease);
}
.tilt-card:hover { transform: translate3d(0, -6px, 0) rotate(-0.45deg); }

.reveal {
  opacity: 0;
  transform: translateY(28px);
  animation: reveal-up 900ms var(--ease) forwards;
}
.reveal[data-reveal="hero-visual"] { animation-delay: 120ms; }
.reveal[data-reveal="feature-a"] { animation-delay: 120ms; }
.reveal[data-reveal="feature-b"] { animation-delay: 220ms; }
.reveal[data-reveal="app"] { animation-delay: 140ms; }
.reveal[data-reveal="nds"] { animation-delay: 100ms; }

@keyframes reveal-up {
  from { opacity: 0; transform: translateY(28px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes panel-rise {
  from { opacity: 0; transform: translateY(20px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@media (max-width: 980px) {
  .hero,
  .feature-card,
  .feature-card-reverse,
  .landing-grid,
  .question-layout,
  .result-grid,
  .insight-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 16px;
  }

  .hero-copy h1,
  #question-title {
    max-width: none;
  }

  .hero-visual {
    padding: 0 0 0 36px;
  }

  .hero-stat-card {
    position: relative;
    width: 100%;
    bottom: auto;
    margin-top: -26px;
  }

  .question-topbar,
  .mix-header,
  .result-strength-row,
  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .mix-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .section,
  .site-header {
    width: min(calc(100% - 24px), var(--max-width));
  }

  .panel,
  .result-hero,
  .nds-band,
  .landing-card,
  .mix-card,
  .insight-card,
  .result-actions-card {
    padding: 18px;
  }

  .hero-visual {
    padding-left: 22px;
  }

  .hero-meta,
  .hero-actions,
  .result-actions {
    width: 100%;
  }

  .button,
  .button-large,
  .hero-actions .button,
  .result-actions .button {
    width: 100%;
  }

  .option-button:hover,
  .option-button.is-selected {
    transform: translateX(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal,
  .panel.active,
  .tilt-card,
  .tilt-card:hover,
  .button:hover,
  .button:focus-visible,
  .option-button:hover,
  .option-button.is-selected {
    transform: none;
  }
}