body {
  background: var(--bg);
  color: var(--text);
  font-family: Arial, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  line-height: 1.6;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--line) 32%, transparent) 1px, transparent 1px),
    linear-gradient(color-mix(in srgb, var(--line) 32%, transparent) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.5), transparent 58%);
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--primary) 72%, white);
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 68px;
  padding: 12px max(24px, calc((100vw - 1180px) / 2));
  border-bottom: 1px solid color-mix(in srgb, var(--line) 84%, transparent);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(14px);
  transition: border-color 180ms ease, background-color 180ms ease;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  transition: transform 180ms ease;
}

.brand:hover {
  transform: translateY(-1px);
}

.brand-mark {
  display: grid;
  grid-template-columns: repeat(2, 10px);
  gap: 3px;
  width: 23px;
  height: 23px;
}

.brand-mark span {
  height: 10px;
  border-radius: 3px;
  background: var(--primary);
  transform-origin: center;
}

.brand-mark span:nth-child(2) {
  background: var(--accent);
}

.brand-mark span:nth-child(3) {
  background: var(--accent-2);
}

.brand-mark span:nth-child(4) {
  background: var(--text);
}

.nav-wrap,
.main-nav,
.button-row,
.capsule-actions,
.capsule-bottom {
  display: flex;
  align-items: center;
}

.nav-wrap {
  gap: 10px;
}

.main-nav {
  gap: 4px;
}

.main-nav a,
.theme-toggle,
.menu-button {
  min-height: 40px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.main-nav a {
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  font-size: 0.94rem;
  font-weight: 700;
}

.main-nav a[aria-current="page"],
.main-nav a:hover,
.theme-toggle:hover,
.menu-button:hover {
  border-color: var(--line);
  background: var(--surface);
  color: var(--text);
}

.main-nav a:hover,
.theme-toggle:hover,
.menu-button:hover {
  transform: translateY(-1px);
}

.theme-toggle {
  padding: 0 12px;
  font-size: 0.86rem;
  font-weight: 800;
}

.menu-button {
  display: none;
  width: 42px;
  padding: 0;
}

.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 3px auto;
  background: currentColor;
}

main {
  width: min(var(--container-width), calc(100% - 36px));
  margin: 0 auto;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  width: min(var(--container-width), calc(100% - 36px));
  margin: 70px auto 0;
  padding: 28px 0 36px;
  border-top: 1px solid var(--line);
}

.site-footer p,
.site-footer nav a {
  color: var(--muted);
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px;
}

.site-footer nav a {
  font-weight: 800;
}

.copyright {
  grid-column: 1 / -1;
}

h1,
h2,
h3,
p,
a,
button {
  overflow-wrap: anywhere;
}

h1 {
  font-size: 3.35rem;
  line-height: 1.05;
}

.reveal-on-scroll {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 520ms ease, transform 520ms ease;
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

h2 {
  font-size: 1.9rem;
  line-height: 1.2;
}

h3 {
  font-size: 1.08rem;
}

.eyebrow {
  margin-bottom: 12px;
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-block,
.split-section,
.trust-band,
.text-page,
.tool-workspace {
  margin: 48px 0;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 18px;
}

.page-hero {
  max-width: 840px;
  padding: 64px 0 22px;
}

.page-hero p:not(.eyebrow),
.text-page p,
.split-section p {
  color: var(--muted);
}

.page-hero p:not(.eyebrow) {
  max-width: 700px;
  font-size: 1.08rem;
}

@media (max-width: 760px) {
  .site-header {
    min-height: 64px;
    padding: 12px 18px;
  }

  .menu-button {
    display: block;
  }

  .main-nav {
    position: absolute;
    top: calc(100% + 8px);
    right: 18px;
    display: none;
    width: min(280px, calc(100vw - 36px));
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow);
  }

  .main-nav.is-open {
    display: grid;
  }

  .main-nav a {
    width: 100%;
  }

  main,
  .site-footer {
    width: min(100% - 28px, 1180px);
  }

  h1 {
    font-size: 2.35rem;
  }

  h2 {
    font-size: 1.55rem;
  }

  .page-hero {
    padding-top: 46px;
  }

  .section-heading,
  .site-footer {
    display: grid;
    grid-template-columns: 1fr;
  }

  .site-footer nav {
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }

  .reveal-on-scroll {
    opacity: 1;
    transform: none;
  }
}