:root {
  color-scheme: light;
  --ink: #111419;
  --muted: #636a75;
  --line: #e4e7ec;
  --soft: #f5f6f8;
  --paper: #ffffff;
  --accent: #141820;
  --accent-soft: #e9edf3;
  --blue: #2364ff;
  --green: #11845b;
  --shadow: 0 24px 70px rgba(20, 24, 32, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: #f0f2f5;
  letter-spacing: 0;
  word-break: keep-all;
  overflow-wrap: break-word;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.page {
  min-height: 100vh;
  background: linear-gradient(180deg, #f7f8fa 0%, #eef1f5 100%);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(247, 248, 250, 0.78);
  border-bottom: 1px solid rgba(228, 231, 236, 0.8);
}

.nav {
  width: min(1120px, calc(100% - 36px));
  height: 74px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.brand span {
  font-size: 16px;
  font-weight: 850;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 26px;
  font-size: 14px;
  font-weight: 760;
  color: #3c434f;
}

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

.kakao-link {
  min-height: 38px;
  padding: 0 13px 0 9px;
  border-radius: 999px;
  background: #fee500;
  color: #111419;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  line-height: 1;
}

.kakao-link img {
  width: 22px;
  height: 22px;
  object-fit: contain;
}

.download-link {
  padding: 12px 17px;
  border: 1px solid #171b22;
  border-radius: 999px;
  background: #171b22;
  color: #fff;
  line-height: 1;
}

.hero {
  width: min(1120px, calc(100% - 36px));
  min-height: calc(100vh - 74px);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(330px, 0.96fr);
  gap: 52px;
  align-items: center;
  padding: 58px 0 70px;
}

.eyebrow {
  display: inline-flex;
  width: fit-content;
  padding: 8px 12px;
  border-radius: 999px;
  background: #e9edf3;
  color: #596170;
  font-size: 12px;
  font-weight: 820;
}

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

.hero h1 {
  margin-top: 20px;
  max-width: 680px;
  font-size: clamp(48px, 7vw, 84px);
  line-height: 0.98;
  font-weight: 900;
}

.hero-copy {
  margin-top: 24px;
  max-width: 600px;
  color: #565e6b;
  font-size: 19px;
  line-height: 1.75;
  font-weight: 620;
}

.hero-actions {
  margin-top: 34px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 21px;
  border-radius: 999px;
  border: 1px solid #171b22;
  background: #171b22;
  color: #fff;
  font-size: 15px;
  font-weight: 860;
  cursor: pointer;
}

.button.secondary {
  background: #fff;
  color: #171b22;
  border-color: #d8dce3;
}

.hero-visual {
  position: relative;
  min-height: 560px;
  border-radius: 32px;
  overflow: hidden;
  background: #d9dde5;
  box-shadow: var(--shadow);
}

.hero-visual img {
  width: 100%;
  height: 100%;
  min-height: 560px;
  object-fit: cover;
  display: block;
}

.visual-panel {
  position: absolute;
  left: 24px;
  right: 24px;
  bottom: 24px;
  padding: 20px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(18px);
  box-shadow: 0 16px 38px rgba(17, 20, 25, 0.18);
}

.visual-panel strong {
  display: block;
  font-size: 15px;
  font-weight: 900;
}

.visual-panel p {
  margin-top: 7px;
  color: #555d69;
  font-size: 13px;
  line-height: 1.55;
  font-weight: 650;
}

.section {
  width: min(1120px, calc(100% - 36px));
  margin: 0 auto;
  padding: 82px 0;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 28px;
}

.section h2 {
  max-width: 640px;
  font-size: clamp(31px, 4vw, 48px);
  line-height: 1.12;
  font-weight: 900;
}

.section-lead {
  max-width: 490px;
  color: #646b76;
  font-size: 16px;
  line-height: 1.7;
  font-weight: 620;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.feature {
  min-height: 186px;
  padding: 22px;
  border-radius: 18px;
  background: var(--paper);
  border: 1px solid var(--line);
}

.feature .mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: #eff3ff;
  color: var(--blue);
  font-size: 18px;
  font-weight: 900;
}

.feature h3 {
  margin-top: 18px;
  font-size: 18px;
  font-weight: 900;
}

.feature p {
  margin-top: 10px;
  color: #626a75;
  font-size: 14px;
  line-height: 1.62;
  font-weight: 600;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 36px;
  align-items: center;
}

.media {
  border-radius: 28px;
  overflow: hidden;
  background: #d8dce3;
  box-shadow: 0 18px 44px rgba(17, 20, 25, 0.12);
}

.media img {
  display: block;
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.plain-list {
  display: grid;
  gap: 16px;
}

.plain-item {
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.plain-item h3 {
  font-size: 20px;
  font-weight: 900;
}

.plain-item p {
  margin-top: 8px;
  color: #626a75;
  line-height: 1.7;
  font-weight: 610;
}

.download-band {
  background: #171b22;
  color: #fff;
}

.download-band .section {
  padding: 64px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.download-band h2 {
  font-size: clamp(30px, 4vw, 46px);
}

.download-band p {
  margin-top: 12px;
  color: #c6ccd6;
  font-size: 16px;
  line-height: 1.7;
  font-weight: 620;
}

.download-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.platform {
  min-width: 150px;
  min-height: 54px;
  padding: 0 18px;
  border-radius: 15px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-weight: 850;
}

.platform span {
  font-size: 20px;
}

.legal-page {
  width: min(920px, calc(100% - 36px));
  margin: 0 auto;
  padding: 68px 0 92px;
}

.legal-page h1 {
  font-size: clamp(36px, 5vw, 58px);
  line-height: 1.08;
  font-weight: 900;
}

.legal-meta {
  margin-top: 16px;
  color: #6a717d;
  font-weight: 650;
}

.legal-box {
  margin-top: 36px;
  padding: 34px;
  border-radius: 24px;
  background: #fff;
  border: 1px solid var(--line);
}

.legal-box h2 {
  margin-top: 32px;
  font-size: 22px;
  line-height: 1.35;
  font-weight: 900;
}

.legal-box h2:first-child {
  margin-top: 0;
}

.legal-box p {
  margin-top: 10px;
  color: #555e6b;
  font-size: 15px;
  line-height: 1.85;
  font-weight: 610;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 30px;
}

.support-card {
  min-height: 170px;
  padding: 24px;
  border-radius: 18px;
  background: #fff;
  border: 1px solid var(--line);
}

.support-card h3 {
  font-size: 19px;
  font-weight: 900;
}

.support-card p {
  margin-top: 10px;
  color: #626a75;
  line-height: 1.65;
  font-weight: 610;
}

.support-action {
  margin-top: 18px;
  min-height: 46px;
  width: fit-content;
  padding: 0 16px 0 11px;
  border-radius: 14px;
  background: #fee500;
  color: #111419;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  font-weight: 900;
}

.support-action img {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

.ai-flow-section {
  padding-top: 28px;
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.workflow-step {
  min-height: 210px;
  padding: 24px;
  border-radius: 18px;
  background: #fff;
  border: 1px solid var(--line);
}

.workflow-step span {
  display: inline-flex;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: #171b22;
  color: #fff;
  font-size: 12px;
  font-weight: 900;
}

.workflow-step h3 {
  margin-top: 20px;
  font-size: 20px;
  font-weight: 900;
}

.workflow-step p {
  margin-top: 10px;
  color: #626a75;
  font-size: 14px;
  line-height: 1.65;
  font-weight: 610;
}

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

.use-case {
  min-height: 210px;
  padding: 28px;
  border-radius: 20px;
  color: #fff;
  background: #171b22;
}

.use-case:nth-child(2) {
  background: #263241;
}

.use-case:nth-child(3) {
  background: #284239;
}

.use-case h3 {
  font-size: 24px;
  font-weight: 900;
}

.use-case p {
  margin-top: 14px;
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.7;
  font-weight: 650;
}

.principle-band {
  background: #fff;
  border-top: 1px solid var(--line);
}

.principle-band .section {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 40px;
  align-items: center;
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.metric-row div {
  min-height: 138px;
  padding: 22px;
  border-radius: 18px;
  background: #f5f6f8;
  border: 1px solid var(--line);
}

.metric-row strong,
.metric-row span {
  display: block;
}

.metric-row strong {
  font-size: 24px;
  font-weight: 900;
}

.metric-row span {
  margin-top: 12px;
  color: #626a75;
  font-size: 13px;
  line-height: 1.55;
  font-weight: 650;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #fff;
}

.footer-inner {
  width: min(1120px, calc(100% - 36px));
  margin: 0 auto;
  padding: 34px 0;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
}

.company {
  color: #555e6b;
  font-size: 13px;
  line-height: 1.75;
  font-weight: 650;
}

.footer-links {
  display: flex;
  gap: 18px;
  color: #3d4550;
  font-size: 13px;
  font-weight: 800;
}

.footer-kakao {
  color: #111419;
}

.download-sheet {
  position: fixed;
  inset: auto 0 0;
  z-index: 40;
  transform: translateY(110%);
  transition: transform 220ms ease;
  background: rgba(255, 255, 255, 0.96);
  border-top: 1px solid var(--line);
  box-shadow: 0 -22px 70px rgba(17, 20, 25, 0.2);
}

.download-sheet.open {
  transform: translateY(0);
}

.sheet-inner {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.sheet-title {
  font-weight: 900;
}

.sheet-note {
  margin-top: 4px;
  color: #6a717d;
  font-size: 13px;
  font-weight: 620;
}

.sheet-platforms {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.sheet-platforms a {
  min-height: 46px;
  padding: 0 15px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 13px;
  border: 1px solid #d9dde5;
  background: #f7f8fa;
  font-size: 14px;
  font-weight: 850;
}

.close-sheet {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid #d9dde5;
  background: #fff;
  cursor: pointer;
  font-size: 20px;
  line-height: 1;
}

@media (max-width: 860px) {
  .nav {
    height: 66px;
  }

  .nav-links {
    gap: 14px;
    font-size: 13px;
  }

  .hero {
    min-height: 0;
    grid-template-columns: 1fr;
    padding: 42px 0 56px;
  }

  .hero-visual {
    min-height: 410px;
  }

  .hero-visual img {
    min-height: 410px;
  }

  .section-head,
  .download-band .section,
  .sheet-inner,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
    display: flex;
  }

  .feature-grid,
  .split,
  .support-grid,
  .workflow-grid,
  .use-case-grid,
  .principle-band .section,
  .metric-row {
    grid-template-columns: 1fr;
  }

  .download-actions {
    justify-content: flex-start;
  }

  .footer-links {
    flex-wrap: wrap;
  }
}

@media (max-width: 560px) {
  .brand span {
    display: none;
  }

  .nav-links {
    gap: 10px;
  }

  .kakao-link {
    width: 38px;
    min-width: 38px;
    height: 38px;
    padding: 0;
    justify-content: center;
    font-size: 0;
  }

  .download-link {
    padding: 10px 12px;
  }

  .hero h1 {
    font-size: 44px;
  }

  .hero-copy {
    font-size: 16px;
  }

  .feature {
    min-height: 0;
  }

  .legal-box {
    padding: 24px;
  }
}