:root {
  color-scheme: light;
  --bg: #f5f4ef;
  --surface: #ffffff;
  --surface-soft: #edf0f3;
  --ink: #111318;
  --muted: #60646c;
  --quiet: #90949c;
  --line: #deded8;
  --accent: #315d73;
  --accent-soft: #dce8ee;
  --blue: #536f9a;
  --clay: #b38e5c;
  --shadow: 0 22px 70px rgba(18, 20, 24, 0.11);
  --max: 1180px;
  --radius: 8px;
  --header-height: 72px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.86) 0%, rgba(245, 244, 239, 0) 24rem),
    var(--bg);
  color: var(--ink);
  font-family:
    Inter, Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial,
    sans-serif;
  line-height: 1.5;
  letter-spacing: 0;
  line-break: strict;
  text-rendering: optimizeLegibility;
  overflow-wrap: break-word;
  word-break: keep-all;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
}

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

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

h1,
h2,
h3 {
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  width: min(calc(100% - 32px), var(--max));
  min-height: var(--header-height);
  margin: 0 auto;
  padding: 12px 0;
  backdrop-filter: blur(18px);
}

.site-header::before {
  position: absolute;
  inset: 8px -16px;
  z-index: -1;
  content: "";
  background: rgba(245, 244, 239, 0.78);
  border: 1px solid rgba(222, 222, 216, 0.78);
  border-radius: 999px;
}

.brand-mark,
.site-nav,
.header-cta,
.primary-button,
.secondary-button {
  min-height: 44px;
  white-space: nowrap;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: max-content;
  font-size: 0.95rem;
  font-weight: 720;
  letter-spacing: 0.02em;
}

.brand-symbol {
  width: 24px;
  height: 24px;
  border: 7px solid var(--ink);
  border-radius: 50%;
  box-shadow: inset 0 0 0 4px var(--surface), 0 0 0 1px var(--line);
}

.site-nav {
  display: inline-flex;
  align-items: center;
  justify-self: center;
  gap: 4px;
  padding: 4px;
  color: var(--muted);
  font-size: 0.87rem;
  font-weight: 620;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 12px;
  border-radius: 999px;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.82);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-self: end;
  padding: 0 18px;
  color: var(--surface);
  background: var(--ink);
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 700;
}

.header-actions {
  display: inline-flex;
  align-items: center;
  justify-self: end;
  gap: 8px;
}

.language-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 0 12px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 780;
  white-space: nowrap;
}

.language-link:hover {
  color: var(--ink);
  border-color: #c8c9c2;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(360px, 0.96fr);
  gap: clamp(30px, 4.4vw, 56px);
  align-items: center;
  min-height: min(760px, calc(100svh - var(--header-height) - 34px));
  padding: clamp(58px, 7vw, 88px) 0 clamp(42px, 6vw, 60px);
}

.hero-content {
  display: grid;
  gap: 20px;
}

.eyebrow,
.section-kicker {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 760;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 680px;
  font-size: clamp(3rem, 5.8vw, 4.8rem);
  line-height: 0.98;
  letter-spacing: 0;
}

.hero-brand {
  margin-top: -6px;
  color: var(--ink);
  font-size: clamp(1.18rem, 2vw, 1.65rem);
  font-weight: 820;
  letter-spacing: 0.04em;
}

.hero-copy {
  max-width: 570px;
  color: var(--muted);
  font-size: clamp(1.08rem, 1.55vw, 1.28rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 6px;
}

.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 740;
}

.primary-button {
  color: var(--surface);
  background: var(--accent);
  border: 1px solid var(--accent);
}

.secondary-button {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
}

.primary-button:hover,
.header-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 30px rgba(49, 93, 115, 0.18);
}

.secondary-button:hover {
  border-color: #c8c9c2;
  transform: translateY(-1px);
}

.hero-visual {
  position: relative;
  margin: 0;
}

.hero-visual img {
  width: 100%;
  aspect-ratio: 1.43 / 1;
  object-fit: cover;
  border: 1px solid rgba(222, 222, 216, 0.9);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.intro-band {
  padding: 8px 0 86px;
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.metric-row div {
  display: grid;
  gap: 12px;
  min-height: 150px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.78);
}

.metric-row span,
.contact-card span {
  color: var(--quiet);
  font-size: 0.78rem;
  font-weight: 740;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metric-row strong {
  max-width: 280px;
  font-size: clamp(1.05rem, 1.7vw, 1.4rem);
  line-height: 1.22;
}

.split-section,
.build-section,
.why-section,
.value-section,
.use-case-section,
.vision-section,
.contact-section {
  padding: clamp(82px, 11vw, 136px) 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 96px;
}

.split-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 0.85fr);
  gap: clamp(32px, 7vw, 90px);
  align-items: start;
  margin-top: 20px;
}

h2 {
  max-width: 850px;
  font-size: clamp(2rem, 4vw, 4.1rem);
  line-height: 1.04;
  letter-spacing: 0;
}

h3 {
  font-size: 1.05rem;
  line-height: 1.24;
  letter-spacing: 0;
}

.rich-copy {
  display: grid;
  gap: 20px;
  color: var(--muted);
  font-size: clamp(1.02rem, 1.45vw, 1.18rem);
}

.section-heading {
  display: grid;
  gap: 18px;
  max-width: 840px;
  margin-bottom: clamp(34px, 5vw, 60px);
}

.section-heading p {
  max-width: 690px;
  color: var(--muted);
  font-size: 1.05rem;
}

.section-heading.compact {
  max-width: 930px;
}

.build-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.system-map + .build-grid {
  margin-top: 16px;
}

.system-map {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 0.72fr) minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  margin-top: 16px;
  padding: clamp(22px, 4vw, 34px);
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(237, 240, 243, 0.78)),
    var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.system-map::before {
  position: absolute;
  top: 50%;
  left: 28%;
  right: 28%;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, transparent, rgba(49, 93, 115, 0.44), transparent);
}

.map-column,
.map-core {
  position: relative;
  z-index: 1;
}

.map-column {
  display: grid;
  gap: 12px;
}

.map-label {
  color: var(--quiet);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.signal-card,
.action-card {
  display: grid;
  gap: 6px;
  min-height: 82px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid rgba(222, 222, 216, 0.9);
  border-radius: var(--radius);
  box-shadow: 0 12px 32px rgba(18, 20, 24, 0.05);
}

.signal-card span,
.action-card span {
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.signal-card strong,
.action-card strong {
  font-size: 1rem;
  line-height: 1.25;
}

.signal-card small {
  color: var(--muted);
  font-size: 0.84rem;
}

.map-core {
  display: grid;
  justify-items: center;
  gap: 12px;
  min-height: 220px;
  padding: 26px 18px;
  color: rgba(255, 255, 255, 0.88);
  text-align: center;
  background: var(--ink);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.core-ring {
  position: relative;
  width: 74px;
  height: 74px;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
    rgba(255, 255, 255, 0.07);
  background-size: 18px 18px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius);
}

.core-ring span {
  position: absolute;
  width: 9px;
  height: 9px;
  background: var(--accent-soft);
  border-radius: 50%;
}

.core-ring span:nth-child(1) {
  top: 14px;
  left: 17px;
}

.core-ring span:nth-child(2) {
  top: 32px;
  right: 15px;
}

.core-ring span:nth-child(3) {
  right: 27px;
  bottom: 14px;
}

.map-core strong {
  color: var(--surface);
  font-size: 1.18rem;
}

.map-core small {
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.84rem;
}

.feature-card,
.value-card,
.use-case-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.feature-card {
  display: grid;
  gap: 42px;
  min-height: 270px;
  padding: clamp(24px, 3vw, 34px);
}

.feature-card .card-index,
.use-case-top span {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.feature-card p,
.value-card p,
.use-case-card p,
.vision-panel p,
.contact-copy p {
  color: var(--muted);
}

.feature-card h3 {
  max-width: 560px;
  font-size: clamp(1.45rem, 2.6vw, 2.35rem);
}

.feature-card p {
  max-width: 600px;
  font-size: 1rem;
}

.problem-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(360px, 0.74fr);
  gap: clamp(28px, 6vw, 80px);
  align-items: stretch;
}

.problem-statement {
  display: grid;
  align-content: end;
  gap: 20px;
  min-height: 360px;
  color: var(--muted);
  font-size: clamp(1.16rem, 2vw, 1.72rem);
  line-height: 1.34;
}

.flow-panel {
  display: grid;
  align-content: center;
  gap: 16px;
  padding: 28px;
  background: var(--ink);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.flow-item {
  display: flex;
  align-items: center;
  min-height: 68px;
  padding: 0 20px;
  color: rgba(255, 255, 255, 0.78);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  font-weight: 720;
}

.flow-item.emphasized {
  color: var(--ink);
  background: var(--accent-soft);
  border-color: var(--accent-soft);
}

.flow-line {
  width: 1px;
  height: 34px;
  margin-left: 32px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(220, 232, 238, 0.9));
}

.request-board {
  display: grid;
  align-content: center;
  gap: 16px;
  padding: 24px;
  color: rgba(255, 255, 255, 0.86);
  background: var(--ink);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.board-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 6px;
}

.board-header span,
.intent-card span {
  color: rgba(255, 255, 255, 0.54);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.board-header strong {
  color: var(--surface);
}

.message-stack {
  display: grid;
  gap: 10px;
}

.message-pill {
  min-height: 48px;
  padding: 13px 15px;
  color: rgba(255, 255, 255, 0.8);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  font-weight: 650;
}

.intent-card {
  display: grid;
  gap: 11px;
  padding: 17px;
  color: var(--ink);
  background: var(--accent-soft);
  border-radius: var(--radius);
}

.intent-card span {
  color: var(--accent);
}

.intent-card strong {
  line-height: 1.28;
}

.intent-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.intent-tags em {
  padding: 6px 9px;
  color: var(--accent);
  background: rgba(255, 255, 255, 0.62);
  border-radius: 999px;
  font-size: 0.76rem;
  font-style: normal;
  font-weight: 800;
}

.board-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.board-actions div {
  display: grid;
  gap: 9px;
  min-height: 82px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
}

.board-actions span {
  width: 24px;
  height: 4px;
  background: var(--accent-soft);
  border-radius: 999px;
}

.board-actions strong {
  align-self: end;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.9rem;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.value-card {
  display: grid;
  gap: 16px;
  min-height: 210px;
  padding: 24px;
}

.value-visual {
  display: grid;
  align-content: center;
  gap: 6px;
  width: 86px;
  height: 52px;
  padding: 10px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.value-visual span {
  height: 4px;
  background: var(--accent);
  border-radius: 999px;
}

.value-visual span:nth-child(1) {
  width: 82%;
  opacity: 0.42;
}

.value-visual span:nth-child(2) {
  width: 58%;
  opacity: 0.68;
}

.value-visual span:nth-child(3) {
  width: 74%;
}

.value-card h3 {
  max-width: 230px;
}

.use-case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.use-case-card {
  display: grid;
  gap: 16px;
  min-height: 270px;
  padding: 24px;
}

.use-case-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.use-case-top i {
  position: relative;
  display: block;
  width: 44px;
  height: 44px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.use-case-top i::before,
.use-case-top i::after {
  position: absolute;
  content: "";
  border-radius: 999px;
}

.use-case-top i::before {
  top: 13px;
  left: 11px;
  width: 22px;
  height: 4px;
  background: var(--accent);
}

.use-case-top i::after {
  right: 11px;
  bottom: 12px;
  width: 11px;
  height: 11px;
  border: 2px solid var(--accent);
}

.use-case-card h3 {
  max-width: 260px;
}

.vision-panel {
  display: grid;
  gap: 22px;
  padding: clamp(32px, 6vw, 64px);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.94), rgba(237, 240, 243, 0.9)),
    var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.vision-panel p {
  max-width: 740px;
  font-size: clamp(1.03rem, 1.45vw, 1.16rem);
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(360px, 0.62fr);
  gap: clamp(34px, 7vw, 86px);
  align-items: start;
}

.contact-copy {
  display: grid;
  gap: 18px;
}

.contact-card {
  display: grid;
  gap: 1px;
  overflow: hidden;
  margin: 0;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-style: normal;
}

.contact-card div {
  display: grid;
  gap: 8px;
  padding: 18px 20px;
  background: var(--surface);
}

.contact-card a,
.site-footer a {
  color: var(--accent);
  font-weight: 720;
  overflow-wrap: anywhere;
  word-break: normal;
}

.contact-card strong {
  font-size: 1rem;
  line-height: 1.36;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
  padding: 30px 0 46px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 0.92rem;
}

.site-footer span:first-child {
  color: var(--ink);
  font-weight: 760;
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .site-nav {
    display: none;
  }

  .hero,
  .split-grid,
  .system-map,
  .problem-layout,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .system-map::before {
    display: none;
  }

  .map-core {
    min-height: 190px;
  }

  .hero {
    min-height: auto;
    padding-top: 64px;
  }

  .hero h1 {
    font-size: clamp(3rem, 10vw, 4.7rem);
  }

  .hero-visual {
    max-width: 760px;
  }

  .metric-row,
  .value-grid,
  .use-case-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .problem-statement {
    min-height: auto;
  }
}

@media (max-width: 680px) {
  :root {
    --header-height: 64px;
  }

  body {
    background: var(--bg);
  }

  .site-header,
  .section-shell,
  .site-footer {
    width: min(calc(100% - 28px), var(--max));
  }

  .site-header::before {
    inset: 8px -8px;
  }

  .brand-mark {
    font-size: 0.88rem;
  }

  .header-cta {
    min-height: 40px;
    padding: 0 14px;
    font-size: 0.84rem;
  }

  .hero {
    gap: 32px;
    padding: 46px 0 52px;
  }

  .hero-content {
    gap: 16px;
  }

  .hero h1 {
    font-size: clamp(2.5rem, 11.2vw, 2.95rem);
  }

  .hero-copy {
    font-size: 1.03rem;
  }

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

  .primary-button,
  .secondary-button {
    width: 100%;
    padding: 0 16px;
  }

  .hero-visual img {
    aspect-ratio: 1.9 / 1;
    object-position: 46% center;
  }

  .intro-band {
    padding-bottom: 62px;
  }

  .metric-row,
  .build-grid,
  .value-grid,
  .use-case-grid {
    grid-template-columns: 1fr;
  }

  .metric-row div {
    min-height: 126px;
  }

  .split-section,
  .build-section,
  .why-section,
  .value-section,
  .use-case-section,
  .vision-section,
  .contact-section {
    padding: 76px 0;
  }

  h2 {
    font-size: clamp(2.05rem, 11vw, 3.2rem);
  }

  .feature-card {
    gap: 42px;
    min-height: 280px;
  }

  .value-card,
  .use-case-card {
    min-height: auto;
  }

  .flow-panel {
    padding: 18px;
  }

  .request-board,
  .system-map {
    padding: 18px;
  }

  .system-map {
    gap: 10px;
  }

  .map-column {
    gap: 8px;
  }

  .map-core {
    min-height: 158px;
    padding: 18px;
  }

  .core-ring {
    width: 58px;
    height: 58px;
    background-size: 14px 14px;
  }

  .core-ring span:nth-child(1) {
    top: 10px;
    left: 13px;
  }

  .core-ring span:nth-child(2) {
    top: 25px;
    right: 12px;
  }

  .core-ring span:nth-child(3) {
    right: 21px;
    bottom: 10px;
  }

  .signal-card,
  .action-card {
    min-height: auto;
    padding: 12px;
  }

  .board-actions {
    grid-template-columns: 1fr;
  }

  .flow-item {
    min-height: 60px;
    padding: 0 16px;
  }

}

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

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