:root {
  color-scheme: light;
  --paper: #f1f0e8;
  --ink: #151611;
  --muted: #65685e;
  --line: #c9cabf;
  --acid: #d8ff63;
  --coral: #ff6f4c;
  --panel: #fbfaf2;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, Pretendard, "Noto Sans KR", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

.shell {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 82px;
  border-bottom: 1px solid var(--line);
}

.brand,
.eyebrow,
.label,
.status,
.mono,
code,
pre {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.brand-mark {
  width: 13px;
  height: 13px;
  background: var(--acid);
  border: 2px solid var(--ink);
  border-radius: 50%;
  box-shadow: 4px 4px 0 var(--ink);
}

.header-link {
  color: var(--muted);
  font-size: 0.9rem;
  text-underline-offset: 4px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(260px, 0.5fr);
  gap: clamp(48px, 9vw, 130px);
  padding: clamp(82px, 12vw, 154px) 0 86px;
}

.eyebrow {
  margin: 0 0 26px;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 850px;
  margin-bottom: 30px;
  font-size: clamp(3.25rem, 8vw, 7.7rem);
  font-weight: 800;
  letter-spacing: -0.065em;
  line-height: 0.92;
}

.highlight {
  position: relative;
  display: inline-block;
  z-index: 0;
}

.highlight::after {
  position: absolute;
  right: -0.03em;
  bottom: 0.04em;
  left: -0.03em;
  height: 0.25em;
  background: var(--acid);
  content: "";
  z-index: -1;
  transform: rotate(-1deg);
}

.accent {
  color: var(--coral);
}

.hero-copy {
  max-width: 590px;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.34rem);
}

.hero-note {
  align-self: end;
  padding-top: 18px;
  border-top: 3px solid var(--ink);
}

.hero-note strong {
  display: block;
  margin-bottom: 9px;
  font-size: 1.1rem;
}

.hero-note p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 22px 0;
  border-top: 1px solid var(--ink);
}

.section-head h2 {
  margin: 0;
  font-size: 1rem;
  letter-spacing: 0.02em;
}

.section-head span {
  color: var(--muted);
  font-size: 0.84rem;
}

.project-card {
  display: grid;
  grid-template-columns: 0.7fr 1.7fr auto;
  gap: 32px;
  align-items: center;
  padding: clamp(30px, 5vw, 58px);
  background: var(--panel);
  border: 1px solid var(--ink);
  box-shadow: 9px 9px 0 var(--ink);
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.project-card:hover,
.project-card:focus-visible {
  box-shadow: 4px 4px 0 var(--ink);
  transform: translate(5px, 5px);
}

.project-number {
  align-self: start;
  color: var(--muted);
  font-size: 0.78rem;
}

.project-title {
  margin-bottom: 12px;
  font-size: clamp(2rem, 4vw, 4.3rem);
  letter-spacing: -0.055em;
  line-height: 1;
}

.project-copy {
  max-width: 630px;
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
}

.project-arrow {
  display: grid;
  width: 54px;
  height: 54px;
  place-items: center;
  background: var(--acid);
  border: 1px solid var(--ink);
  border-radius: 50%;
  font-size: 1.5rem;
}

.status-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.status {
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: 100px;
  color: var(--muted);
  font-size: 0.71rem;
  text-transform: uppercase;
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 92px 0 110px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.principle {
  padding: 32px 28px 38px 0;
}

.principle + .principle {
  padding-left: 28px;
  border-left: 1px solid var(--line);
}

.principle .label {
  color: var(--coral);
  font-size: 0.74rem;
}

.principle h3 {
  margin: 24px 0 12px;
  font-size: 1.28rem;
}

.principle p {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  padding: 30px 0 44px;
  border-top: 1px solid var(--ink);
  color: var(--muted);
  font-size: 0.82rem;
}

.detail-hero {
  display: grid;
  grid-template-columns: 1.4fr 0.6fr;
  gap: 70px;
  padding: clamp(70px, 10vw, 128px) 0 78px;
  border-bottom: 1px solid var(--ink);
}

.detail-hero h1 {
  max-width: 900px;
  font-size: clamp(3.4rem, 8vw, 7rem);
}

.detail-aside {
  align-self: end;
}

.detail-aside dl {
  margin: 0;
}

.detail-aside div {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 10px 0;
  border-top: 1px solid var(--line);
  font-size: 0.85rem;
}

.detail-aside dt {
  color: var(--muted);
}

.detail-aside dd {
  margin: 0;
  text-align: right;
}

.detail-grid {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: clamp(45px, 9vw, 130px);
  padding: 82px 0;
  border-bottom: 1px solid var(--line);
}

.detail-grid h2 {
  font-size: clamp(1.8rem, 3vw, 3rem);
  letter-spacing: -0.04em;
}

.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.feature-list li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  padding: 17px 0;
  border-top: 1px solid var(--line);
}

.feature-list li::before {
  color: var(--coral);
  content: "↳";
  font-family: monospace;
}

.code-panel {
  overflow-x: auto;
  padding: 28px;
  background: var(--ink);
  color: #f7f6ee;
  border-radius: 2px;
}

.support-copy {
  margin-top: 18px;
  color: var(--muted);
}

pre {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.8;
}

.prompt {
  color: var(--acid);
}

.notice {
  padding: 26px 28px;
  background: #ffe2d8;
  border-left: 5px solid var(--coral);
}

.notice strong {
  display: block;
  margin-bottom: 7px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 19px;
  border: 1px solid var(--ink);
  background: var(--acid);
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
}

.button.secondary {
  background: transparent;
}

.button:hover,
.button:focus-visible {
  background: var(--ink);
  color: var(--paper);
}

@media (max-width: 760px) {
  .shell {
    width: min(calc(100% - 28px), var(--max));
  }

  .hero,
  .detail-hero,
  .detail-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    gap: 58px;
    padding-top: 72px;
  }

  .project-card {
    grid-template-columns: 1fr auto;
  }

  .project-number {
    grid-column: 1 / -1;
  }

  .principles {
    grid-template-columns: 1fr;
  }

  .principle,
  .principle + .principle {
    padding: 27px 0;
    border-left: 0;
  }

  .principle + .principle {
    border-top: 1px solid var(--line);
  }

  .site-footer {
    gap: 18px;
    flex-direction: column;
  }
}

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

  .project-card {
    transition: none;
  }
}