:root {
  --bg: #080b0e;
  --surface: #0e1419;
  --surface-strong: #141d24;
  --ink: #eef5f3;
  --muted: #95a4a1;
  --line: rgba(169, 190, 185, 0.18);
  --line-strong: rgba(169, 190, 185, 0.32);
  --accent: #22c7ad;
  --accent-ink: #041411;
  --shadow: 0 28px 80px rgba(3, 7, 10, 0.44);
  --radius: 8px;
  --radius-lg: 18px;
  --sans: "Geist", "Satoshi", "Pretendard Variable", "Noto Sans KR", system-ui, sans-serif;
  --mono: "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--sans);
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(34, 199, 173, 0.08), transparent 420px),
    linear-gradient(145deg, #080b0e 0%, #0d1115 52%, #070a0c 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(238, 245, 243, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(238, 245, 243, 0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 78%);
}

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

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

.site-shell {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  min-height: 76px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 20px;
  border-bottom: 1px solid var(--line);
}

.brand,
.nav-links,
.hero-actions,
.site-footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0;
}

.brand-mark {
  width: 32px;
  height: 32px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(34, 199, 173, 0.1);
  color: var(--accent);
  font-family: var(--mono);
}

.nav-links {
  justify-content: center;
  gap: 26px;
  color: var(--muted);
  font-size: 0.93rem;
}

.nav-links a,
.nav-cta,
.primary-action,
.secondary-action {
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, color 180ms ease;
}

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

.nav-cta {
  justify-self: end;
  padding: 10px 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.03);
}

.nav-cta:hover,
.secondary-action:hover {
  border-color: rgba(34, 199, 173, 0.58);
}

.hero-section {
  min-height: calc(100dvh - 76px);
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr);
  gap: 54px;
  align-items: center;
  padding: 54px 0 72px;
}

.hero-copy {
  max-width: 620px;
}

.eyebrow {
  margin-bottom: 14px;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(3rem, 7vw, 6.4rem);
  line-height: 0.93;
  max-width: 680px;
  letter-spacing: 0;
}

h2 {
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  font-size: 1.05rem;
  line-height: 1.25;
}

.hero-lede,
.section-heading p,
.workflow-panel p,
.feature-list p,
.security-copy p,
.security-list dd,
.cta-section p {
  color: var(--muted);
  line-height: 1.72;
}

.hero-lede {
  margin-top: 24px;
  max-width: 62ch;
  font-size: 1.08rem;
}

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

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: var(--radius);
  font-weight: 750;
}

.primary-action {
  background: var(--accent);
  color: var(--accent-ink);
}

.primary-action:hover {
  transform: translateY(-1px);
  background: #4ad7c2;
}

.primary-action:active,
.secondary-action:active,
.nav-cta:active {
  transform: translateY(1px) scale(0.99);
}

.secondary-action {
  border: 1px solid var(--line-strong);
  color: var(--ink);
}

.hero-visual {
  position: relative;
}

.console-preview {
  min-height: 520px;
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(18, 26, 32, 0.98), rgba(9, 14, 18, 0.98));
  box-shadow: var(--shadow);
}

.preview-sidebar {
  padding: 18px;
  border-right: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.025);
}

.preview-status {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  color: #b9cbc7;
  font-size: 0.78rem;
  font-family: var(--mono);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--accent);
  animation: breathe 2.5s ease-in-out infinite;
}

.project-list {
  display: grid;
  gap: 9px;
  margin-top: 26px;
}

.project-item {
  padding: 11px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 0.82rem;
}

.project-item.active {
  border-color: rgba(34, 199, 173, 0.48);
  color: var(--ink);
  background: rgba(34, 199, 173, 0.1);
}

.preview-main {
  min-width: 0;
  padding: 22px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 20px;
}

.preview-topline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--muted);
  font-size: 0.82rem;
}

.preview-topline strong {
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.terminal-lines {
  display: grid;
  gap: 13px;
  align-content: center;
}

.terminal-lines span {
  height: 58px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background:
    linear-gradient(90deg, rgba(34, 199, 173, 0.18), transparent 38%),
    rgba(255, 255, 255, 0.035);
}

.terminal-lines span:nth-child(2) {
  width: 86%;
}

.terminal-lines span:nth-child(3) {
  width: 74%;
}

.terminal-lines span:nth-child(4) {
  width: 92%;
}

.change-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.change-strip span {
  padding: 7px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #b9cbc7;
  font-family: var(--mono);
  font-size: 0.72rem;
}

.workflow-section,
.features-section,
.security-section,
.cta-section {
  padding: 86px 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 34px;
}

.section-heading.narrow {
  max-width: 590px;
}

.workflow-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 14px;
}

.workflow-panel {
  min-height: 230px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.035);
}

.workflow-panel:nth-child(3) {
  grid-column: 1 / -1;
  min-height: 190px;
  background: linear-gradient(90deg, rgba(34, 199, 173, 0.09), rgba(255, 255, 255, 0.03));
}

.panel-kicker {
  display: block;
  margin-bottom: 42px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.workflow-panel h3,
.feature-list h3 {
  margin-bottom: 10px;
}

.feature-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.feature-list article {
  min-height: 180px;
  padding: 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.security-section {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 52px;
  align-items: start;
}

.security-list {
  margin: 28px 0 0;
  display: grid;
  gap: 16px;
}

.security-list div {
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.security-list dt {
  margin-bottom: 6px;
  color: var(--ink);
  font-weight: 750;
}

.security-list dd {
  margin: 0;
}

.cta-section {
  max-width: 780px;
}

.cta-section p {
  max-width: 62ch;
  margin: 18px 0 28px;
}

.site-footer {
  min-height: 82px;
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.86rem;
}

@keyframes breathe {
  0%,
  100% {
    opacity: 0.45;
    transform: scale(0.9);
  }

  50% {
    opacity: 1;
    transform: scale(1);
  }
}

@media (max-width: 960px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .nav-links {
    display: none;
  }

  .hero-section,
  .security-section {
    grid-template-columns: 1fr;
  }

  .hero-section {
    gap: 34px;
  }

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

@media (max-width: 760px) {
  .site-shell {
    width: min(100% - 28px, 1180px);
  }

  .site-header {
    min-height: 68px;
    gap: 12px;
  }

  .brand span:last-child {
    max-width: 150px;
  }

  .nav-cta {
    padding: 9px 11px;
    font-size: 0.86rem;
  }

  .hero-section {
    min-height: auto;
    padding: 42px 0 54px;
  }

  h1 {
    font-size: clamp(2.7rem, 17vw, 4.2rem);
  }

  h2 {
    font-size: clamp(2rem, 12vw, 3rem);
  }

  .console-preview {
    min-height: 440px;
    grid-template-columns: 1fr;
  }

  .preview-sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .project-list {
    grid-template-columns: 1fr;
  }

  .workflow-grid,
  .feature-list {
    grid-template-columns: 1fr;
  }

  .workflow-panel:nth-child(3) {
    grid-column: auto;
  }

  .workflow-section,
  .features-section,
  .security-section,
  .cta-section {
    padding: 60px 0;
  }

  .site-footer {
    min-height: 100px;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}