:root {
  --bg: #f6f7f2;
  --surface: #ffffff;
  --ink: #101010;
  --line: #111111;
  --muted: #5b5b5b;
  --accent: #0052cc;
  --accent-soft: #dfe9ff;
  --success: #18733b;
  --radius: 6px;
  --shadow: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Pretendard, "Noto Sans KR", "Spoqa Han Sans Neo", sans-serif;
  color: var(--ink);
  background: #f6f7f2;
}

img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

button,
select {
  font: inherit;
}

.page-shell {
  width: min(1400px, calc(100% - 32px));
  margin: 0 auto;
  padding-bottom: 72px;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid rgba(17, 17, 17, 0.18);
}

.eyebrow,
.section-kicker,
.top-nav a,
figcaption,
.result-block h3,
label span {
  font-size: 0.86rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.top-nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.top-nav a {
  position: relative;
  padding-bottom: 3px;
}

.top-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 220ms ease;
}

.top-nav a:hover::after,
.top-nav a:focus-visible::after {
  transform: scaleX(1);
}

.section-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
  padding: 56px 0;
}

.hero {
  align-items: end;
}

.hero-copy {
  max-width: 660px;
}

h1,
h2,
h3,
p,
ul,
ol,
figure {
  margin: 0;
}

h1 {
  font-size: clamp(3.4rem, 7vw, 6.6rem);
  line-height: 0.94;
  letter-spacing: -0.06em;
  margin-top: 12px;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.hero-body,
.insight-copy p,
.feature-copy p,
.cta-panel h2 + p {
  font-size: 1.06rem;
  line-height: 1.75;
  color: var(--muted);
}

.hero-body {
  max-width: 540px;
  margin-top: 24px;
}

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

.hero-actions {
  margin-top: 28px;
}

.btn {
  min-height: 48px;
  padding: 12px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform 180ms ease, background-color 180ms ease, color 180ms ease, border-color 180ms ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
}

.btn:focus-visible,
.top-nav a:focus-visible,
select:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--ink);
  color: var(--surface);
}

.btn-secondary {
  background: transparent;
  color: var(--ink);
}

.hero-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 28px;
  padding: 0;
  list-style: none;
}

.hero-points li,
.result-block,
.feature-copy,
.generator-panel,
.result-panel,
.cta-panel,
.insight-band,
.metric-card {
  border: 1px solid rgba(17, 17, 17, 0.16);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(12px);
}

.hero-points li {
  padding: 16px;
  min-height: 108px;
  display: flex;
  align-items: end;
}

.hero-visual {
  position: relative;
  min-height: 620px;
  margin-left: 8vw;
}

.hero-visual img {
  border-radius: 24px 6px 40px 6px;
}

figcaption {
  margin-top: 10px;
  color: var(--muted);
}

.metric-card {
  position: absolute;
  left: -52px;
  bottom: 84px;
  width: 180px;
  padding: 18px;
  animation: floatCard 5.4s ease-in-out infinite;
}

.metric-card span,
.result-metrics span,
.result-block h3,
label span,
figcaption,
.section-kicker,
.eyebrow {
  color: var(--muted);
}

.metric-card strong,
.result-metrics strong {
  display: block;
  margin-top: 10px;
  font-size: 2rem;
  line-height: 1;
}

.insight-band {
  grid-template-columns: 0.85fr 1.15fr;
  padding: 28px 32px;
  margin: 12px 0 24px;
}

.generator {
  align-items: start;
}

.generator-panel {
  padding: 28px;
  transform: translateX(2vw);
}

.result-panel {
  padding: 28px;
  transform: translateY(48px);
}

.panel-head {
  display: grid;
  gap: 10px;
  margin-bottom: 24px;
}

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

label {
  display: grid;
  gap: 10px;
}

select {
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid rgba(17, 17, 17, 0.24);
  background: var(--surface);
  color: var(--ink);
}

.form-actions {
  grid-column: 1 / -1;
  padding-top: 8px;
}

.result-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.result-metrics article {
  padding: 16px;
  border: 1px solid rgba(17, 17, 17, 0.12);
  background: #fbfbfb;
}

.result-block {
  padding: 16px;
  margin-top: 14px;
}

.result-block ul,
.result-block ol {
  margin-top: 12px;
  padding-left: 20px;
  display: grid;
  gap: 10px;
  line-height: 1.65;
}

.warning-box {
  border-color: rgba(0, 82, 204, 0.32);
  background: var(--accent-soft);
}

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

.feature-strip {
  display: grid;
  gap: 34px;
  padding: 56px 0;
}

.feature-card {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 22px;
  align-items: center;
}

.feature-card.reverse {
  grid-template-columns: 1.05fr 0.95fr;
}

.feature-media {
  min-height: 380px;
  overflow: hidden;
  border-radius: 32px 6px 6px 42px;
}

.feature-media.offset-top {
  transform: translateY(-18px) translateX(-18px);
}

.feature-media.offset-bottom {
  transform: translateY(18px) translateX(18px);
}

.feature-copy {
  padding: 28px;
}

.feature-copy p {
  margin-top: 18px;
}

.cta-panel {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 18px;
  align-items: center;
  margin-top: 24px;
  padding: 32px;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 720ms ease, transform 720ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 {
  transition-delay: 120ms;
}

.delay-2 {
  transition-delay: 220ms;
}

@keyframes floatCard {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-12px);
  }
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .reveal,
  .reveal.is-visible,
  .metric-card,
  .btn:hover,
  .btn:focus-visible {
    transform: none;
  }
}

@media (max-width: 1080px) {
  .section-grid,
  .feature-card,
  .feature-card.reverse,
  .cta-panel {
    grid-template-columns: 1fr;
  }

  .hero-visual,
  .generator-panel,
  .result-panel,
  .feature-media.offset-top,
  .feature-media.offset-bottom {
    margin-left: 0;
    transform: none;
  }

  .metric-card {
    left: 16px;
    bottom: 16px;
  }

  .hero-points,
  .stack-form,
  .result-metrics {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100% - 24px, 100%);
  }

  .site-header {
    align-items: start;
    flex-direction: column;
  }

  .section-grid,
  .feature-strip {
    padding: 40px 0;
  }

  .hero-visual {
    min-height: 420px;
  }

  .hero-visual img,
  .feature-media {
    border-radius: 24px 6px 24px 6px;
  }

  .generator-panel,
  .result-panel,
  .feature-copy,
  .cta-panel,
  .insight-band {
    padding: 22px;
  }
}