:root {
  color-scheme: dark;
  --ink: #edf3f5;
  --muted: #9cadb3;
  --night: #081015;
  --panel: #0d1920;
  --line: #29404a;
  --ice: #8dd5df;
  --signal: #e9b65f;
  font-family: "Pretendard Variable", Pretendard, Inter, "Noto Sans KR", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-width: 320px;
  color: var(--ink);
  background: var(--night);
  line-height: 1.65;
  overflow-x: hidden;
}

a {
  text-underline-offset: .18em;
}

a:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 4px;
}

#scene {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: .7;
}

.shell {
  position: relative;
  z-index: 2;
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-top: 24px;
}

.language-switch {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(13, 25, 32, .82);
  box-shadow: 0 10px 30px rgba(0, 0, 0, .18);
  backdrop-filter: blur(10px);
}

.language-switch a,
.language-switch span {
  display: inline-flex;
  min-width: 44px;
  min-height: 36px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  color: var(--muted);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .08em;
  line-height: 1;
  text-decoration: none;
}

.language-switch .active {
  color: var(--night);
  background: var(--ice);
}

.language-switch a:hover {
  color: var(--ink);
  background: rgba(141, 213, 223, .1);
}

header {
  padding: 66px 0 40px;
}

.eyebrow {
  color: var(--ice);
  letter-spacing: .16em;
  text-transform: uppercase;
  font-size: .78rem;
  font-weight: 700;
}

h1 {
  max-width: 980px;
  margin: 16px 0 10px;
  font-family: "Gowun Batang", Georgia, serif;
  font-size: clamp(2.4rem, 7vw, 4.6rem);
  line-height: 1.08;
  letter-spacing: -.02em;
  text-wrap: balance;
}

h1 em {
  color: var(--signal);
  font-style: normal;
}

.lead {
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(1rem, 2.2vw, 1.16rem);
}

.metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.metric {
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(13, 25, 32, .7);
  font-size: .84rem;
  backdrop-filter: blur(6px);
}

.metric b {
  color: var(--signal);
}

main {
  padding: 48px 0 60px;
}

.works {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 330px), 1fr));
  gap: 18px;
}

.work {
  position: relative;
  display: block;
  min-width: 0;
  padding: 26px 24px 22px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  color: inherit;
  background: linear-gradient(160deg, var(--wa, #10151d) 0%, rgba(13, 25, 32, .85) 70%);
  text-decoration: none;
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}

.work:hover,
.work:focus-visible,
.work:focus-within {
  border-color: var(--wb, var(--ice));
  box-shadow: 0 18px 44px -18px var(--wb, rgba(141, 213, 223, .4));
  transform: translateY(-5px);
}

.work::before {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 85% -10%, var(--wb) 0%, transparent 55%);
  content: "";
  opacity: .16;
  pointer-events: none;
}

.work > * {
  position: relative;
}

.work .k {
  color: var(--wb, var(--ice));
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.work h2 {
  margin: 8px 0 4px;
  font-family: "Gowun Batang", Georgia, serif;
  font-size: 1.7rem;
  line-height: 1.3;
}

.work .en {
  color: var(--muted);
  font-size: .85rem;
  font-style: italic;
}

.work p {
  min-height: 3em;
  margin: 12px 0 16px;
  color: var(--muted);
  font-size: .9rem;
}

.work .row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: .76rem;
}

.work .row span,
.work .row a {
  padding: 3px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
}

.work .row a {
  color: var(--ice);
  font-weight: 800;
  text-decoration: none;
}

.work .row span b {
  color: var(--wb, var(--ice));
}

.work--split {
  padding: 0;
}

.work--split .work-main {
  display: block;
  height: 100%;
  padding: 26px 24px 22px;
  color: inherit;
  text-decoration: none;
}

.work--split .row {
  padding-right: 56px;
}

.work--split .card-locale {
  position: absolute;
  right: 24px;
  bottom: 22px;
  z-index: 3;
  display: inline-flex;
  min-width: 42px;
  min-height: 27px;
  align-items: center;
  justify-content: center;
  padding: 3px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ice);
  font-size: .76rem;
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
}

.work.locked {
  position: relative;
  overflow: hidden;
}

.work.locked .locked-blur {
  filter: blur(7px);
  user-select: none;
  transition: filter .35s ease;
}

.work.locked:hover .locked-blur,
.work.locked:focus-visible .locked-blur {
  filter: blur(3px);
}

.work.locked .lock-badge {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: radial-gradient(ellipse at center, rgba(6, 10, 16, .35) 0%, rgba(6, 10, 16, .72) 100%);
  font-size: 1.9rem;
}

.work.locked .lock-badge span {
  color: var(--wb, var(--ice));
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .04em;
}

.duo {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 18px;
  margin-top: 40px;
}

.panel {
  min-width: 0;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(13, 25, 32, .78);
}

.panel h3 {
  margin-bottom: 12px;
  font-family: "Gowun Batang", Georgia, serif;
  font-size: 1.35rem;
}

.panel ol {
  display: grid;
  gap: 8px;
  margin-left: 20px;
  color: var(--muted);
  font-size: .92rem;
}

.panel b {
  color: var(--ice);
}

.panel code.endpoint {
  display: block;
  max-width: 100%;
  margin: 12px 0;
  padding: 10px 14px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--signal);
  font-family: ui-monospace, Consolas, monospace;
  font-size: .84rem;
  white-space: nowrap;
}

.panel .status {
  color: #8bc7a1;
  font-weight: 700;
}

.panel p {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: .92rem;
}

.panel a {
  color: var(--ice);
}

.principle {
  margin-top: 22px;
  padding: 18px 22px;
  border-left: 4px solid var(--signal);
  border-radius: 0 12px 12px 0;
  color: var(--muted);
  background: rgba(233, 182, 95, .08);
  font-size: .92rem;
}

.principle strong {
  color: var(--ink);
}

.legacy {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
  font-size: .86rem;
}

.legacy a,
footer a {
  color: var(--ice);
}

footer {
  padding: 28px 0 64px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .84rem;
}

@media (max-width: 860px) {
  .duo {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .shell {
    width: min(100% - 28px, 620px);
  }

  .topbar {
    padding-top: 14px;
  }

  header {
    padding: 44px 0 26px;
  }

  h1 {
    margin-top: 12px;
    font-size: clamp(2.2rem, 11.5vw, 3.4rem);
    line-height: 1.06;
  }

  .lead {
    font-size: 1rem;
    line-height: 1.72;
  }

  .metrics {
    gap: 8px;
    margin-top: 22px;
  }

  .metric {
    padding: 7px 11px;
    font-size: .8rem;
  }

  main {
    padding: 28px 0 42px;
  }

  .works {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .work,
  .work--split .work-main {
    padding: 21px 19px 19px;
  }

  .work--split {
    padding: 0;
  }

  .work--split .card-locale {
    right: 19px;
    bottom: 19px;
  }

  .work h2 {
    font-size: 1.5rem;
  }

  .work p {
    min-height: 0;
    margin: 10px 0 14px;
  }

  .duo {
    margin-top: 28px;
  }

  .panel {
    padding: 21px 19px;
  }

  .panel ol {
    margin-left: 17px;
    padding-left: 4px;
  }

  .principle {
    padding: 16px 17px;
  }

  footer {
    padding-bottom: 42px;
  }
}

@media (max-width: 420px) {
  .shell {
    width: calc(100% - 22px);
  }

  .language-switch a,
  .language-switch span {
    min-width: 42px;
    min-height: 34px;
  }

  header {
    padding-top: 34px;
  }

  .eyebrow {
    font-size: .69rem;
    letter-spacing: .12em;
  }

  h1 {
    font-size: clamp(2rem, 12.5vw, 2.75rem);
  }

  .metrics {
    display: grid;
    grid-template-columns: 1fr;
  }

  .metric {
    border-radius: 12px;
  }

  .work,
  .work--split .work-main {
    padding: 19px 16px 17px;
    border-radius: 15px;
  }

  .work--split {
    padding: 0;
  }

  .work--split .row {
    padding-right: 48px;
  }

  .work--split .card-locale {
    right: 16px;
    bottom: 17px;
  }

  .panel {
    padding: 19px 16px;
    border-radius: 15px;
  }

  .panel code.endpoint {
    padding: 9px 10px;
    font-size: .76rem;
  }

  .legacy {
    display: grid;
    gap: 10px;
  }
}

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

  .work,
  .work.locked .locked-blur {
    transition: none;
  }
}