/* ==========================================================================
   highpixel.ai — 디자인 토큰
   기하 규칙: 로고의 기울어진 획(skew -14°)과 우상단 "떠 있는 픽셀"이
   페이지 전체의 시그니처다. 칩·마커·히어로 필드가 같은 각도를 공유한다.
   ========================================================================== */

:root {
  --paper: #FAFAF8;
  --panel: #F1F4FB;
  --ink: #10141B;
  --ink-muted: #4B5160;
  --line: #E2E5EC;

  --blue: #1F5DED;
  --blue-2: #447BFB;
  --palda: #6466FA;

  --navy: #0A1C4E;
  --navy-ink: #EFF3FF;
  --navy-muted: #9FB0DC;
  --navy-line: rgba(214, 226, 255, 0.16);
  --navy-panel: rgba(214, 226, 255, 0.06);

  --font-body: "Pretendard Variable", Pretendard, -apple-system,
    BlinkMacSystemFont, system-ui, "Apple SD Gothic Neo", sans-serif;
  --font-display: var(--font-body);
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --step--1: 0.8125rem;
  --step-0: 1.0625rem;
  --step-1: 1.25rem;
  --step-2: 1.625rem;
  --step-3: clamp(1.85rem, 3.2vw, 2.5rem);
  --step-4: clamp(2.75rem, 6vw, 4.5rem);

  --space-section: clamp(5rem, 9vw, 7.5rem);
  --measure: 36rem;

  --skew: -14deg;
  --radius: 4px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0E1014;
    --panel: #161B26;
    --ink: #EDEFF4;
    --ink-muted: #9CA3B0;
    --line: #252A35;

    --blue: #7BA5FF;
    --blue-2: #447BFB;
    --palda: #9092FF;

    --navy: #182F66;
    --navy-ink: #EDF1FD;
    --navy-muted: #93A3CE;
    --navy-line: rgba(214, 226, 255, 0.14);
    --navy-panel: rgba(214, 226, 255, 0.05);
  }
}

/* ==========================================================================
   기본
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.75;
  font-weight: 400;
  word-break: keep-all;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.25;
  letter-spacing: -0.03em;
  font-weight: 700;
  margin: 0;
}

p { margin: 0; }

a { color: var(--blue); text-underline-offset: 0.2em; }

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

.container {
  width: 100%;
  max-width: 74rem;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

section {
  padding-block: var(--space-section);
  scroll-margin-top: 5rem;
}

/* 픽셀 마침표 — 섹션 제목 끝에 붙는 기울어진 브랜드 픽셀 */
.section__title {
  font-size: var(--step-3);
}

.section__title::after {
  content: "";
  display: inline-block;
  width: 0.42em;
  height: 0.42em;
  margin-left: 0.22em;
  background: var(--blue-2);
  transform: skewX(var(--skew));
  border-radius: 1px;
}

.section__lead {
  margin-top: 1rem;
  max-width: var(--measure);
  color: var(--ink-muted);
}

/* ==========================================================================
   내비게이션
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  min-height: 4rem;
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.site-header__brand img { display: block; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  margin-left: auto;
}

.site-nav a:not(.btn) {
  font-size: 0.9375rem;
  color: var(--ink-muted);
  text-decoration: none;
}

.site-nav a:not(.btn):hover { color: var(--ink); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background-color 140ms ease, color 140ms ease, border-color 140ms ease;
}

.btn--primary {
  background: var(--blue);
  color: #fff;
}

.btn--primary:hover { background: var(--blue-2); }

@media (prefers-color-scheme: dark) {
  .btn--primary { color: #0E1014; }
}

.btn--ghost {
  color: var(--ink);
  border-color: var(--line);
}

.btn--ghost:hover { border-color: var(--ink-muted); }

/* ==========================================================================
   히어로
   ========================================================================== */

.hero {
  padding-block: clamp(4rem, 8vw, 6.5rem) 0;
  overflow: hidden;
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  margin-top: clamp(1.5rem, 3vw, 2.5rem);
}

.hero__title {
  font-size: var(--step-4);
  letter-spacing: -0.04em;
}

.hero__title .muted { color: var(--ink-muted); font-weight: 600; }
.hero__title .accent { color: var(--blue); }

.hero__lead {
  margin-top: 1.75rem;
  max-width: var(--measure);
  font-size: var(--step-1);
  line-height: 1.7;
  color: var(--ink-muted);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2.25rem;
}

.hero__cta .btn { font-size: 1rem; padding: 0.7rem 1.4rem; }

/* 픽셀 필드 — 로고의 "떠 있는 픽셀"을 해체해 확대한 것 */
.px-field { display: block; width: 100%; height: auto; }

.px-field .pxb  { fill: var(--blue); }
.px-field .pxb2 { fill: var(--blue-2); }
.px-field .pxt  { fill: var(--blue); opacity: 0.14; }
.px-field .pxo  { fill: none; stroke: var(--line); stroke-width: 2; }

.px-field rect {
  opacity: 0;
  animation: px-in 0.55s ease-out forwards;
  animation-delay: calc(var(--d) * 55ms);
}

.px-field .pxt { animation-name: px-in-t; }

@keyframes px-in   { to { opacity: 1; } }
@keyframes px-in-t { to { opacity: 0.14; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .px-field rect { animation: none; opacity: 1; }
  .px-field .pxt { opacity: 0.14; }
  .btn { transition: none; }
  .pk { animation: none; }
}

/* 상태 스트립 — 지금 돌아가는 것 */
.hero__strip {
  margin-top: clamp(3rem, 6vw, 4.5rem);
  border-top: 1px solid var(--line);
  padding-block: 1.1rem 1.4rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 2.5rem;
  font-family: var(--font-mono);
  font-size: var(--step--1);
}

.hero__strip a {
  display: inline-flex;
  align-items: baseline;
  gap: 0.6rem;
  color: var(--ink-muted);
  text-decoration: none;
}

.hero__strip a:hover { color: var(--ink); }

.hero__strip .mark {
  align-self: center;
  width: 0.55em;
  height: 0.55em;
  background: var(--blue-2);
  transform: skewX(var(--skew));
  border-radius: 1px;
}

.hero__strip strong { color: var(--ink); font-weight: 600; }

/* ==========================================================================
   만든 것
   ========================================================================== */

.work__feature {
  margin-top: 3rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.75rem, 4vw, 3rem);
}

.work__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

.work__logo { display: block; width: 44px; height: 44px; }

.chip {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-weight: 500;
  color: var(--blue);
  border: 1px solid color-mix(in srgb, var(--blue) 45%, transparent);
  padding: 0.2rem 0.65rem;
  border-radius: 2px;
  transform: skewX(var(--skew));
}

.chip > span { display: inline-block; transform: skewX(calc(-1 * var(--skew))); }

.work__name {
  font-size: var(--step-3);
  letter-spacing: -0.03em;
}

.work__feature .work__name { color: var(--palda); }

.work__desc {
  margin-top: 1rem;
  max-width: 42rem;
  color: var(--ink-muted);
}

.work__feature .work__desc { color: var(--ink); }

.work__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 1.25rem;
  margin-top: 1.25rem;
}

.work__item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 3vw, 2rem);
}

.work__item .work__name {
  font-size: var(--step-2);
  margin-top: 1rem;
}

/* ==========================================================================
   미션 — 네이비 선언 밴드
   ========================================================================== */

.mission {
  background: var(--navy);
  color: var(--navy-ink);
}

.mission .section__lead { color: var(--navy-muted); }
.mission .section__title::after { background: var(--blue-2); }
.mission__accent { color: var(--blue-2); }

.mission__teams {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 1.25rem;
  margin-top: 2.75rem;
}

.mission__item {
  background: var(--navy-panel);
  border: 1px solid var(--navy-line);
  border-radius: var(--radius);
  padding: 1.75rem 2rem;
}

.mission__team {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--navy-muted);
}

.mission__item p {
  margin-top: 0.6rem;
  font-size: var(--step-1);
  font-weight: 600;
  letter-spacing: -0.01em;
}

/* ==========================================================================
   네이비 밴드 — 구조 · 팀 · 일하는 방식
   ========================================================================== */

.loop, .practice {
  background: var(--navy);
  color: var(--navy-ink);
}

.loop { padding-bottom: calc(var(--space-section) * 0.55); }
.practice { padding-top: 0; }

.loop .section__lead,
.practice .section__lead { color: var(--navy-muted); }

.loop .section__title::after,
.practice .section__title::after { background: var(--blue-2); }

/* 순환 다이어그램 — 두 팀 노드와 두 방향의 픽셀 흐름 */
.flow {
  display: grid;
  grid-template-columns: minmax(13rem, 1fr) minmax(0, 1.7fr) minmax(13rem, 1fr);
  gap: clamp(1.25rem, 3vw, 2.5rem);
  align-items: center;
  margin-top: 3rem;
}

.flow__team {
  background: var(--navy-panel);
  border: 1px solid var(--navy-line);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.flow__team h3 {
  font-size: var(--step-2);
  letter-spacing: -0.02em;
}

.flow__role {
  margin-top: 0.25rem;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--navy-muted);
}

.flow__members {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
}

.flow__members li {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border: 1px solid var(--navy-line);
  border-radius: 2px;
  padding: 0.2rem 0.65rem;
  font-size: var(--step--1);
  color: var(--navy-ink);
  cursor: default;
  transition: border-color 140ms ease, color 140ms ease, background-color 140ms ease;
}

.flow__desc {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--navy-line);
  font-size: 0.9375rem;
  color: var(--navy-muted);
}

.flow__mid {
  display: grid;
  gap: 2.25rem;
}

.flow__channel {
  border-radius: var(--radius);
  transition: opacity 160ms ease;
  cursor: default;
}

.flow__channel.is-dim { opacity: 0.35; }

.flow__dir {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--navy-muted);
}

.flow__payload {
  margin-top: 0.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.flow__channel--rev .flow__payload { margin-top: 0.6rem; }
.flow__channel--rev .flow__dir { margin-top: 0.15rem; }
.flow__channel:not(.flow__channel--rev) .flow__track { margin-top: 0.6rem; }

.flow__track {
  position: relative;
  height: 2px;
  background: var(--navy-line);
}

.flow__track::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -1px;
  border: 5px solid transparent;
  border-left: 8px solid var(--blue-2);
  transform: translateY(-50%);
}

.flow__channel--rev .flow__track::after {
  right: auto;
  left: -1px;
  border-left: 5px solid transparent;
  border-right: 8px solid var(--blue-2);
}

.pk {
  position: absolute;
  top: 50%;
  width: 9px;
  height: 9px;
  margin-top: -4.5px;
  background: var(--blue-2);
  transform: skewX(var(--skew));
  border-radius: 1px;
  animation: pk-run 3.4s linear infinite;
}

.pk:nth-child(1) { left: 18%; }
.pk:nth-child(2) { left: 48%; animation-delay: -1.15s; }
.pk:nth-child(3) { left: 78%; animation-delay: -2.3s; }

.flow__channel--rev .pk { animation-name: pk-run-rev; }

@keyframes pk-run {
  0%   { left: 0;                 opacity: 0; }
  12%  { opacity: 1; }
  88%  { opacity: 1; }
  100% { left: calc(100% - 9px);  opacity: 0; }
}

@keyframes pk-run-rev {
  0%   { left: calc(100% - 9px);  opacity: 0; }
  12%  { opacity: 1; }
  88%  { opacity: 1; }
  100% { left: 0;                 opacity: 0; }
}

.flow__channel.is-active .flow__dir { color: var(--navy-ink); }
.flow__channel.is-active .flow__track { background: color-mix(in srgb, var(--blue-2) 55%, var(--navy-line)); }

.flow__detail {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--navy-line);
  max-width: var(--measure);
  min-height: 3.2em;
  color: var(--navy-muted);
}

@media (max-width: 52rem) {
  .flow { grid-template-columns: 1fr; }
  .flow__mid { padding-block: 0.5rem; }
}

.practice .section__title { font-size: var(--step-2); }

.practice__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 2rem 2.5rem;
  margin-top: 2.5rem;
  max-width: 56rem;
}

.practice__item {
  border-top: 1px solid var(--navy-line);
  padding-top: 1.1rem;
}

.practice__item h3 {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: var(--step-0);
  letter-spacing: -0.01em;
}

.practice__item h3::before {
  content: "";
  width: 0.45em;
  height: 0.45em;
  background: var(--blue-2);
  transform: skewX(var(--skew));
  border-radius: 1px;
}

.practice__item p {
  margin-top: 0.5rem;
  font-size: 0.9375rem;
  color: var(--navy-muted);
}

/* ==========================================================================
   회사
   ========================================================================== */

.facts {
  margin: 3rem 0 0;
  max-width: 50rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.facts__row {
  display: grid;
  grid-template-columns: 11rem 1fr;
  gap: 1.5rem;
  padding: 1.1rem 1.5rem;
  border-top: 1px solid var(--line);
}

.facts__row:first-child { border-top: none; }

.facts__row:nth-child(odd) { background: color-mix(in srgb, var(--panel) 55%, transparent); }

.facts__row dt {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--ink-muted);
  padding-top: 0.2rem;
}

.facts__row dd { margin: 0; }

@media (max-width: 34rem) {
  .facts__row {
    grid-template-columns: 1fr;
    gap: 0.25rem;
    padding: 1rem 1.25rem;
  }
}

/* ==========================================================================
   채용
   ========================================================================== */

.careers__teams {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.careers__slot {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.55rem 1rem;
}

.careers__slot-name {
  font-weight: 600;
  letter-spacing: -0.01em;
}

.careers__slot-px {
  display: inline-flex;
  gap: 0.3rem;
}

.careers__slot-px i {
  width: 0.55rem;
  height: 0.55rem;
  border: 1px solid var(--blue-2);
  border-radius: 1px;
  transform: skewX(var(--skew));
}

.careers__slot-px i.f { background: var(--blue-2); }

.careers__slot-count {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--ink-muted);
}

.careers__ideal { margin-top: 2.5rem; }

.careers__ideal-label {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--ink-muted);
}

.careers__ideal-list {
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
  max-width: 46rem;
}

.careers__ideal-list li {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.9rem 0;
  border-top: 1px solid var(--line);
  font-weight: 500;
}

.careers__ideal-list li:last-child { border-bottom: 1px solid var(--line); }

.careers__ideal-list li::before {
  content: "";
  flex-shrink: 0;
  width: 0.5em;
  height: 0.5em;
  background: var(--blue-2);
  transform: skewX(var(--skew));
  border-radius: 1px;
}

.careers__cta { margin-top: 2rem; }

.careers__edu {
  margin-top: 3rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--line);
}

.careers__edu-label {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--ink-muted);
}

.careers__edu-logos {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2.5rem;
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
}

.careers__edu-logos li {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9375rem;
  color: var(--ink-muted);
}

.careers__edu-logos img {
  display: block;
  height: 44px;
  width: auto;
}

@media (prefers-color-scheme: dark) {
  .careers__edu-logos img {
    background: #fff;
    padding: 4px;
    border-radius: var(--radius);
  }
}

/* ==========================================================================
   AX 도입 문의
   ========================================================================== */

.contact { padding-top: 0; }

.contact__panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.75rem, 4vw, 3rem);
}

.contact__cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem;
  margin-top: 2rem;
}

.contact__mail {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--ink-muted);
}

/* ==========================================================================
   푸터
   ========================================================================== */

.site-footer {
  background: var(--navy);
  color: var(--navy-muted);
  padding-block: var(--space-section) 4rem;
}

.site-footer__contact { font-size: var(--step-2); font-weight: 600; }

.site-footer__contact a {
  color: var(--navy-ink);
  text-decoration: none;
}

.site-footer__contact a:hover { color: var(--blue-2); }

.site-footer__meta {
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--step--1);
}

.site-footer__meta:first-of-type { margin-top: 2rem; }

/* ==========================================================================
   반응형
   ========================================================================== */

@media (max-width: 52rem) {
  .site-nav a:not(.btn) { display: none; }

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

  .hero__visual { max-width: 22rem; }
}