:root {
  --color-cream: #FEFAEF;
  --color-ink: #1B1716;
  --bg-main: #FEFAEF;
  --bg-soft: #FBF7EC;
  --bg-muted: #F7F2E6;
  --bg-raised: #F1EBDD;
  --border-subtle: #EEE7D8;
  --border-default: #E2DACB;
  --border-strong: #CFC5B6;
  --text-primary: #1B1716;
  --text-secondary: #342E2B;
  --text-muted: #5A504B;
  --accent-walnut: #8B6A4E;
  --accent-wine: #6A2F2B;
  --accent-olive: #6C705C;
  --accent-terracotta: #C86F49;
  --button-primary-bg: #1B1716;
  --button-primary-text: #FEFAEF;
  --inverse-bg: #1B1716;
  --inverse-text: #FEFAEF;
  --paper: var(--bg-main);
  --paper-soft: var(--bg-soft);
  --paper-deep: var(--bg-raised);
  --ink: var(--color-ink);
  --ink-soft: var(--text-secondary);
  --line: var(--border-default);
  --walnut: var(--accent-walnut);
  --wine: var(--accent-wine);
  --sage: var(--accent-olive);
  --terracotta: var(--accent-terracotta);
  --white: var(--color-cream);
  --shadow: 0 24px 70px rgba(27, 23, 22, 0.14);
  --radius-xs: 8px;
  --radius-sm: 18px;
  --radius-md: 30px;
  --font-display: Georgia, "Times New Roman", serif;
  --font-body: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", "Segoe UI", sans-serif;
  --max: 1180px;
  --header-height: 76px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.6;
}

body.is-nav-open {
  overflow: hidden;
}

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

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent-terracotta);
  outline-offset: 4px;
}

button,
input,
textarea {
  font: inherit;
}

p,
ul,
ol {
  margin: 0;
}

ul,
ol {
  padding-left: 1.2rem;
}

li + li {
  margin-top: 0.55rem;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 16px;
  z-index: 100;
  transform: translateY(-150%);
  background: var(--white);
  color: var(--ink);
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
}

.skip-link:focus {
  transform: translateY(0);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  height: var(--header-height);
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 24px;
  padding: 14px 28px;
  color: var(--white);
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease;
  border-bottom: 1px solid rgba(254, 250, 239, 0.14);
}

.site-header.is-scrolled,
.site-header.is-open {
  background: rgba(27, 23, 22, 0.94);
  border-color: rgba(254, 250, 239, 0.18);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
  font-weight: 760;
  letter-spacing: 0;
}

.brand-mark {
  display: inline-grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-family: var(--font-display);
  font-size: 0.9rem;
  line-height: 1;
}

.brand-text {
  white-space: nowrap;
}

.site-nav {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 0.94rem;
}

.site-nav a {
  opacity: 0.78;
  transition: opacity 160ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a[aria-current="page"] {
  opacity: 1;
}

.nav-toggle {
  display: none;
  justify-self: end;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(254, 250, 239, 0.28);
  background: rgba(254, 250, 239, 0.08);
  color: currentColor;
  cursor: pointer;
  border-radius: var(--radius-xs);
}

.nav-toggle span:not(.visually-hidden) {
  display: block;
  width: 18px;
  height: 1px;
  margin: 0 auto 6px;
  background: currentColor;
}

.nav-toggle span:not(.visually-hidden):last-of-type {
  margin-bottom: 0;
}

.hero {
  position: relative;
  min-height: 92svh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.74fr);
  gap: clamp(36px, 6vw, 78px);
  align-items: center;
  padding:
    calc(var(--header-height) + 28px)
    max(28px, calc((100vw - var(--max)) / 2))
    60px;
  color: var(--white);
  background:
    radial-gradient(circle at 76% 34%, rgba(200, 111, 73, 0.18), transparent 34%),
    linear-gradient(135deg, rgba(27, 23, 22, 0.96), rgba(50, 37, 32, 0.96) 52%, rgba(106, 47, 43, 0.92));
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 210px;
  background: linear-gradient(to bottom, rgba(251, 247, 236, 0), var(--paper) 100%);
  pointer-events: none;
}

.hero__content,
.app-preview {
  position: relative;
  z-index: 1;
}

.hero__content {
  width: min(720px, 100%);
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--terracotta);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.liquid-title {
  margin: 0;
  width: min-content;
  max-width: 100%;
  color: var(--white);
  font-family: var(--font-display);
  font-size: clamp(4.1rem, 10.5vw, 8.25rem);
  font-weight: 400;
  line-height: 0.92;
  letter-spacing: 0;
  background:
    linear-gradient(110deg, #FEFAEF 0%, #F1EBDD 26%, #C86F49 48%, #FEFAEF 64%, #CFC5B6 100%);
  background-size: 240% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: liquid-text 9s ease-in-out infinite alternate;
}

@keyframes liquid-text {
  from {
    background-position: 0% 50%;
  }

  to {
    background-position: 100% 50%;
  }
}

.hero__lede {
  max-width: 680px;
  margin-top: 22px;
  color: rgba(254, 250, 239, 0.86);
  font-size: clamp(1.04rem, 1.45vw, 1.2rem);
  line-height: 1.66;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: var(--radius-xs);
  cursor: pointer;
  font-weight: 720;
  line-height: 1;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button--light {
  color: var(--ink);
  background: var(--white);
  border-color: var(--white);
}

.button--ghost {
  color: var(--white);
  border-color: rgba(254, 250, 239, 0.52);
  background: rgba(254, 250, 239, 0.08);
}

.app-preview {
  justify-self: start;
}

.phone-frame {
  width: min(282px, 82vw);
  aspect-ratio: 0.55;
  padding: 18px;
  border: 1px solid rgba(254, 250, 239, 0.24);
  border-radius: 34px;
  background: linear-gradient(180deg, rgba(254, 250, 239, 0.96), rgba(241, 235, 221, 0.92));
  box-shadow: 0 36px 90px rgba(0, 0, 0, 0.36);
  color: var(--ink);
}

.phone-status {
  display: flex;
  justify-content: space-between;
  margin-bottom: 18px;
}

.phone-status span:first-child {
  width: 72px;
  height: 8px;
  border-radius: 999px;
  background: var(--border-strong);
}

.phone-status span:last-child {
  width: 36px;
  height: 8px;
  border-radius: 999px;
  background: var(--accent-olive);
}

.archive-card {
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  background: var(--white);
  padding: 18px;
}

.archive-card--featured {
  min-height: 178px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background:
    linear-gradient(180deg, rgba(27, 23, 22, 0), rgba(27, 23, 22, 0.86)),
    linear-gradient(135deg, #8B6A4E, #6A2F2B 58%, #1B1716);
  color: var(--white);
}

.archive-card__label {
  width: fit-content;
  margin-bottom: 18px;
  padding: 7px 10px;
  border: 1px solid rgba(254, 250, 239, 0.28);
  border-radius: 999px;
  color: rgba(254, 250, 239, 0.82);
  font-size: 0.76rem;
  font-weight: 760;
}

.archive-card h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.74rem;
  font-weight: 400;
  line-height: 1.05;
}

.archive-card p {
  margin-top: 10px;
  color: rgba(254, 250, 239, 0.74);
}

.archive-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.archive-list span {
  height: 38px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xs);
  background: rgba(254, 250, 239, 0.72);
}

.privacy-chip {
  width: fit-content;
  margin-top: 14px;
  padding: 8px 11px;
  border-radius: 999px;
  background: var(--accent-olive);
  color: var(--white);
  font-size: 0.82rem;
  font-weight: 760;
}

.section {
  padding: 96px 28px;
}

.section__inner {
  width: min(var(--max), 100%);
  margin-inline: auto;
}

.intro-section {
  background: var(--paper-soft);
  padding-top: 22px;
}

.feature-section,
.legal-section {
  background: var(--paper);
}

.data-section {
  background: var(--paper-deep);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(34px, 7vw, 90px);
}

.split--center {
  align-items: center;
}

h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.3rem, 5vw, 4.1rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 400;
  line-height: 1.14;
}

.copy-stack {
  display: grid;
  gap: 18px;
  color: var(--text-secondary);
  font-size: 1.04rem;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 42px;
}

.feature-grid,
.legal-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.legal-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feature-card,
.legal-card,
.policy-summary,
.domain-note,
.document-card {
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xs);
  background: rgba(254, 250, 239, 0.68);
  box-shadow: 0 10px 30px rgba(27, 23, 22, 0.05);
}

.feature-card,
.legal-card,
.policy-summary {
  padding: 26px;
}

.feature-icon {
  display: inline-grid;
  width: 38px;
  height: 38px;
  place-items: center;
  margin-bottom: 34px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--white);
  font-size: 0.76rem;
  font-weight: 800;
}

.feature-card p,
.legal-card p,
.policy-summary p,
.document-card p {
  margin-top: 14px;
  color: var(--text-secondary);
}

.check-list {
  margin: 22px 0;
  color: var(--text-secondary);
}

.scope-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.scope-list span {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 10px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xs);
  background: var(--bg-muted);
  color: var(--text-secondary);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.84rem;
  font-weight: 700;
}

.text-link {
  display: inline-flex;
  align-items: center;
  margin-top: 4px;
  color: var(--wine);
  font-weight: 800;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.legal-card {
  position: relative;
  transition: transform 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.legal-card:hover,
.legal-card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  background: var(--white);
}

.legal-card h3 {
  font-size: 1.55rem;
}

.legal-card h3 a {
  text-decoration: underline;
  text-decoration-color: rgba(106, 47, 43, 0.36);
  text-underline-offset: 5px;
}

.domain-note {
  margin-top: 18px;
  padding: 18px 20px;
  color: var(--text-secondary);
}

.site-footer {
  padding: 42px 28px;
  background: var(--inverse-bg);
  color: var(--inverse-text);
}

.footer__inner {
  width: min(var(--max), 100%);
  margin-inline: auto;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 24px;
  align-items: center;
}

.brand--footer .brand-mark {
  width: 36px;
  height: 36px;
}

.footer__inner p {
  color: rgba(254, 250, 239, 0.72);
  font-size: 0.94rem;
}

.footer__inner a {
  text-decoration: underline;
  text-decoration-color: rgba(254, 250, 239, 0.34);
  text-underline-offset: 4px;
}

.footer__inner nav {
  display: flex;
  gap: 18px;
  font-size: 0.94rem;
}

.document-hero {
  padding: calc(var(--header-height) + 76px) 28px 64px;
  color: var(--white);
  background:
    radial-gradient(circle at 82% 26%, rgba(200, 111, 73, 0.18), transparent 30%),
    linear-gradient(135deg, #1B1716, #342E2B 58%, #6A2F2B);
}

.document-hero__inner,
.document-layout {
  width: min(960px, 100%);
  margin-inline: auto;
}

.document-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 8vw, 6.5rem);
  font-weight: 400;
  line-height: 0.95;
}

.document-hero p {
  max-width: 720px;
  margin-top: 22px;
  color: rgba(254, 250, 239, 0.78);
  font-size: 1.08rem;
}

.document-layout {
  display: grid;
  gap: 22px;
  padding: 72px 28px 96px;
}

.document-card {
  padding: clamp(24px, 5vw, 38px);
}

.document-card h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

.document-card h3 {
  margin-top: 24px;
}

.document-card p + p,
.document-card p + ul,
.document-card ul + p {
  margin-top: 14px;
}

.document-card ul {
  color: var(--text-secondary);
}

.document-meta {
  display: grid;
  gap: 6px;
  padding: 18px 20px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xs);
  background: var(--paper-soft);
  color: var(--text-secondary);
}

.document-meta strong {
  color: var(--ink);
}

.scroll-reveal {
  --reveal-distance: 26px;
  opacity: 0;
  transform: translate3d(0, var(--reveal-distance), 0);
  transition:
    opacity 680ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 680ms cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: var(--reveal-delay, 0ms);
}

.scroll-reveal.is-revealed {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

@media (max-width: 940px) {
  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    padding-top: calc(var(--header-height) + 72px);
  }

  .hero__content {
    margin-left: 0;
  }

  .app-preview {
    justify-self: center;
    margin-right: 0;
  }

  .split,
  .feature-grid,
  .legal-grid,
  .footer__inner {
    grid-template-columns: 1fr;
  }

  .footer__inner {
    align-items: start;
  }
}

@media (max-width: 760px) {
  .site-header {
    grid-template-columns: auto auto;
    padding-inline: 18px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    inset: var(--header-height) 14px auto;
    display: grid;
    gap: 0;
    padding: 8px;
    border: 1px solid rgba(254, 250, 239, 0.16);
    border-radius: var(--radius-sm);
    background: rgba(27, 23, 22, 0.96);
    box-shadow: var(--shadow);
    transform: translateY(-14px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 180ms ease, transform 180ms ease, visibility 180ms ease;
  }

  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-nav a {
    padding: 15px 14px;
    border-radius: var(--radius-xs);
  }

  .site-nav a:hover,
  .site-nav a:focus-visible {
    background: rgba(254, 250, 239, 0.08);
  }

  .brand-text {
    font-size: 0.95rem;
  }

  .hero,
  .section,
  .document-hero,
  .document-layout {
    padding-left: 20px;
    padding-right: 20px;
  }

  .hero {
    min-height: calc(100svh - 44px);
    padding-top: calc(var(--header-height) + 54px);
    padding-bottom: 54px;
  }

  .app-preview {
    display: none;
  }

  .liquid-title {
    font-size: clamp(4rem, 18vw, 6.2rem);
  }

  .phone-frame {
    width: min(330px, 100%);
  }

  .footer__inner nav {
    flex-wrap: wrap;
  }
}

@media (max-width: 460px) {
  .hero__actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .archive-card--featured {
    min-height: 190px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }

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