:root {
  --ink: #132036;
  --muted: #58667a;
  --blue: #145f9f;
  --teal: #16837a;
  --gold: #b8872e;
  --paper: #ffffff;
  --soft: #f5f8fb;
  --line: rgba(19, 32, 54, 0.14);
  --shadow: 0 22px 60px rgba(19, 32, 54, 0.12);
  color: var(--ink);
  background: var(--paper);
  font-family:
    ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
    "Noto Sans KR", "Segoe UI", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--paper);
}

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

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

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

h1,
h2,
h3 {
  letter-spacing: 0;
  word-break: keep-all;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 18px 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(18px);
}

.brand {
  color: var(--ink);
  font-size: 1rem;
  font-weight: 950;
}

.site-header nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 20px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 850;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  align-items: center;
  gap: 44px;
  width: min(1180px, calc(100% - 40px));
  min-height: calc(100svh - 64px);
  margin: 0 auto;
  padding: 58px 0 72px;
}

.hero-copy {
  padding-top: 18px;
}

.hero h1 {
  max-width: 720px;
  color: var(--ink);
  font-size: clamp(3rem, 7vw, 6.4rem);
  line-height: 1.02;
}

.subtitle {
  max-width: 680px;
  margin-top: 24px;
  color: var(--blue);
  font-size: clamp(1.35rem, 2.4vw, 2rem);
  font-weight: 900;
  line-height: 1.35;
}

.lead {
  max-width: 620px;
  margin-top: 20px;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.8;
}

.asset-note {
  margin-top: 16px;
  color: var(--teal);
  font-size: 0.94rem;
  font-weight: 900;
  line-height: 1.5;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 8px;
  font-weight: 950;
}

.button.primary {
  color: #ffffff;
  background: var(--ink);
}

.button.secondary {
  color: var(--ink);
  border: 1px solid var(--line);
  background: #ffffff;
}

.hero-visual {
  display: flex;
  justify-content: center;
  margin: 0;
}

.hero-visual img {
  width: min(100%, 430px);
  aspect-ratio: 2 / 3;
  object-fit: contain;
  border: 1px solid rgba(20, 95, 159, 0.12);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.thesis-band,
.suite-band,
.openframe-band,
.poc-band,
.workflow-band,
.contents-band,
.closing-band {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 82px 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  display: grid;
  gap: 14px;
  max-width: 820px;
  margin-bottom: 34px;
}

.label {
  color: var(--gold);
  font-size: 0.82rem;
  font-weight: 950;
  letter-spacing: 0;
  text-transform: uppercase;
}

.section-heading h2,
.principle-copy h2,
.closing-band h2 {
  color: var(--ink);
  font-size: clamp(2rem, 4vw, 3.45rem);
  line-height: 1.12;
}

.section-heading p,
.principle-copy p,
.closing-band p {
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.8;
}

.thesis-grid,
.suite-grid,
.pricing-grid,
.contents-grid {
  display: grid;
  gap: 14px;
}

.thesis-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.thesis-grid article,
.suite-grid article,
.pricing-grid article,
.contents-grid article {
  min-height: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.thesis-grid article {
  padding: 24px;
}

.thesis-grid h3,
.suite-grid h3,
.pricing-grid h3 {
  color: var(--ink);
  font-size: 1.16rem;
  line-height: 1.35;
}

.thesis-grid p,
.suite-grid p,
.pricing-grid p {
  margin-top: 12px;
  color: var(--muted);
  line-height: 1.72;
}

.suite-band,
.poc-band {
  width: 100%;
  background: var(--soft);
}

.suite-band > *,
.poc-band > * {
  width: min(1180px, calc(100% - 40px));
  margin-right: auto;
  margin-left: auto;
}

.suite-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.suite-grid article {
  padding: 22px;
  background: #ffffff;
}

.suite-grid span,
.contents-grid span,
.timeline span {
  color: var(--blue);
  font-size: 0.8rem;
  font-weight: 950;
}

.openframe-band {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(420px, 1.15fr);
  gap: 54px;
  align-items: start;
}

.principle-copy {
  display: grid;
  gap: 16px;
}

.split-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.split-list > div {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.split-list h3 {
  color: var(--ink);
  font-size: 1.12rem;
}

.split-list ul {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.55;
}

.pricing-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.pricing-grid article {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 22px;
  background: #ffffff;
}

.pricing-grid strong {
  color: var(--teal);
  font-size: 1.05rem;
}

.workflow-band {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(420px, 1.2fr);
  gap: 48px;
}

.timeline {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.timeline p {
  color: var(--muted);
  line-height: 1.72;
}

.contents-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.contents-grid article {
  display: grid;
  gap: 10px;
  min-height: 100%;
  padding: 20px;
  background: #ffffff;
}

.contents-grid img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid rgba(20, 95, 159, 0.1);
  background: var(--soft);
}

.contents-grid p {
  color: var(--ink);
  font-size: 1.04rem;
  font-weight: 850;
  line-height: 1.42;
}

.closing-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 70px;
}

footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 30px 0 42px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 750;
}

@media (max-width: 980px) {
  .hero,
  .openframe-band,
  .workflow-band {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 42px;
  }

  .hero-visual {
    order: -1;
  }

  .thesis-grid,
  .suite-grid,
  .pricing-grid,
  .contents-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .site-header {
    align-items: flex-start;
  }

  .site-header nav {
    display: none;
  }

  .hero {
    width: min(100% - 32px, 1180px);
    gap: 30px;
    padding: 24px 0 54px;
  }

  .hero h1 {
    font-size: clamp(2.8rem, 14vw, 4.1rem);
  }

  .hero-actions .button,
  .closing-band .button {
    width: 100%;
  }

  .thesis-band,
  .openframe-band,
  .workflow-band,
  .contents-band,
  .closing-band {
    width: min(100% - 32px, 1180px);
    padding: 58px 0;
  }

  .suite-band,
  .poc-band {
    padding: 58px 0;
  }

  .suite-band > *,
  .poc-band > * {
    width: min(100% - 32px, 1180px);
  }

  .thesis-grid,
  .suite-grid,
  .pricing-grid,
  .contents-grid,
  .split-list {
    grid-template-columns: 1fr;
  }

  .timeline li {
    grid-template-columns: 1fr;
  }

  .closing-band {
    flex-direction: column;
    align-items: stretch;
  }
}