:root {
  color-scheme: light dark;
  --page: #f3f6f1;
  --page-soft: #e9efe9;
  --surface: #ffffff;
  --surface-strong: #f8faf7;
  --ink: #122019;
  --ink-soft: #536159;
  --line: #d6dfd8;
  --brand: #1d513d;
  --brand-strong: #123c2c;
  --brand-soft: #dcebe3;
  --accent: #f06a45;
  --accent-soft: #fbe0d7;
  --signal: #cfe96a;
  --shadow: 0 24px 70px rgba(24, 53, 40, 0.12);
  --shadow-soft: 0 12px 32px rgba(24, 53, 40, 0.08);
  --radius-sm: 0.75rem;
  --radius-md: 1.25rem;
  --radius-lg: 2rem;
  --content: 74rem;
  --header-height: 5rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1.5rem);
}

body {
  min-width: 0;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 6% 5%, rgba(207, 233, 106, 0.2), transparent 24rem),
    var(--page);
  color: var(--ink);
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR",
    "Apple SD Gothic Neo", sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.2em;
}

button,
summary {
  font: inherit;
}

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

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

::selection {
  background: var(--signal);
  color: #122019;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  background: var(--ink);
  color: var(--surface);
  font-weight: 800;
  transform: translateY(-180%);
  transition: transform 160ms ease;
}

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

.container {
  width: min(calc(100% - 2rem), var(--content));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  min-height: var(--header-height);
  border-bottom: 1px solid transparent;
  background: rgba(243, 246, 241, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.site-header[data-scrolled="true"] {
  border-bottom-color: var(--line);
  box-shadow: 0 8px 24px rgba(24, 53, 40, 0.06);
}

.header-inner {
  display: flex;
  min-height: var(--header-height);
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--ink);
  font-weight: 900;
  letter-spacing: -0.04em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  border-radius: 0.9rem 0.9rem 0.9rem 0.25rem;
  background: var(--brand);
  color: #ffffff;
  font-size: 0.84rem;
  letter-spacing: -0.02em;
  box-shadow: 0 8px 18px rgba(29, 81, 61, 0.22);
}

.brand-name {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.brand-name strong {
  font-size: 1.1rem;
}

.brand-name span {
  margin-top: 0.22rem;
  color: var(--ink-soft);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.nav-menu {
  position: relative;
}

.nav-menu summary {
  display: none;
  min-width: 2.75rem;
  min-height: 2.75rem;
  cursor: pointer;
  list-style: none;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--surface);
  font-weight: 800;
}

.nav-menu summary::-webkit-details-marker {
  display: none;
}

.nav-menu summary::before {
  width: 1rem;
  height: 0.75rem;
  content: "";
  background:
    linear-gradient(var(--ink), var(--ink)) 0 0 / 100% 2px no-repeat,
    linear-gradient(var(--ink), var(--ink)) 0 50% / 100% 2px no-repeat,
    linear-gradient(var(--ink), var(--ink)) 0 100% / 100% 2px no-repeat;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-links a {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  padding: 0.5rem 0.85rem;
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 0.92rem;
  font-weight: 750;
  text-decoration: none;
  transition:
    background-color 160ms ease,
    color 160ms ease;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  background: var(--brand-soft);
  color: var(--brand-strong);
}

.nav-links .nav-contact {
  margin-left: 0.35rem;
  background: var(--ink);
  color: var(--surface);
}

.nav-links .nav-contact:hover {
  background: var(--brand);
  color: #ffffff;
}

main {
  min-height: 60vh;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 1rem;
  color: var(--brand);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--accent);
  content: "";
  box-shadow: 0 0 0 0.32rem var(--accent-soft);
}

.hero {
  position: relative;
  padding: clamp(4.5rem, 10vw, 8rem) 0 clamp(5rem, 10vw, 8.5rem);
}

.hero::after {
  position: absolute;
  z-index: -1;
  right: -8rem;
  bottom: 3rem;
  width: 22rem;
  height: 22rem;
  border: 1px solid rgba(29, 81, 61, 0.1);
  border-radius: 50%;
  content: "";
}

.hero-grid {
  display: grid;
  align-items: center;
  gap: clamp(3rem, 7vw, 6.5rem);
  grid-template-columns: minmax(0, 1.05fr) minmax(20rem, 0.78fr);
}

.hero-copy h1 {
  max-width: 12ch;
  margin: 0;
  font-size: clamp(3.15rem, 7.6vw, 6.6rem);
  font-weight: 900;
  letter-spacing: -0.075em;
  line-height: 0.96;
}

.hero-copy h1 span {
  display: block;
  color: var(--brand);
}

.hero-lead {
  max-width: 38rem;
  margin: 1.75rem 0 0;
  color: var(--ink-soft);
  font-size: clamp(1.08rem, 2vw, 1.32rem);
  letter-spacing: -0.025em;
}

.hero-actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 3.25rem;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.72rem 1.2rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: var(--ink);
  color: var(--surface);
  font-size: 0.94rem;
  font-weight: 850;
  text-decoration: none;
  transition:
    transform 160ms ease,
    background-color 160ms ease,
    border-color 160ms ease;
}

.button::after {
  content: "↗";
  font-size: 1.05em;
}

.button:hover {
  border-color: var(--brand);
  background: var(--brand);
  color: #ffffff;
  transform: translateY(-2px);
}

.button-secondary {
  border-color: var(--line);
  background: transparent;
  color: var(--ink);
}

.button-secondary::after {
  content: "↓";
}

.button-secondary:hover {
  border-color: var(--brand);
  background: var(--brand-soft);
  color: var(--brand-strong);
}

.status-line {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin: 1.35rem 0 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
  font-weight: 700;
}

.status-line::before {
  width: 0.62rem;
  height: 0.62rem;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--signal);
  content: "";
  box-shadow: 0 0 0 0.34rem rgba(207, 233, 106, 0.22);
}

.map-visual {
  position: relative;
  min-height: 32rem;
  overflow: hidden;
  border: 1px solid rgba(29, 81, 61, 0.16);
  border-radius: 3rem 3rem 3rem 0.85rem;
  background:
    linear-gradient(35deg, transparent 46%, rgba(255, 255, 255, 0.72) 46% 51%, transparent 51%),
    linear-gradient(112deg, transparent 42%, rgba(255, 255, 255, 0.62) 42% 48%, transparent 48%),
    linear-gradient(90deg, rgba(29, 81, 61, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(29, 81, 61, 0.08) 1px, transparent 1px),
    #dce9e1;
  background-size: auto, auto, 3.5rem 3.5rem, 3.5rem 3.5rem, auto;
  box-shadow: var(--shadow);
  isolation: isolate;
}

.map-visual::before,
.map-visual::after {
  position: absolute;
  z-index: -1;
  border-radius: 50%;
  content: "";
}

.map-visual::before {
  top: 4rem;
  right: -3rem;
  width: 13rem;
  height: 13rem;
  background: rgba(207, 233, 106, 0.62);
}

.map-visual::after {
  bottom: -4rem;
  left: -2rem;
  width: 12rem;
  height: 12rem;
  background: rgba(240, 106, 69, 0.18);
}

.map-topbar {
  display: flex;
  position: absolute;
  top: 1rem;
  right: 1rem;
  left: 1rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1rem;
  border: 1px solid rgba(29, 81, 61, 0.12);
  border-radius: 1.1rem;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow-soft);
  color: #1b382b;
  backdrop-filter: blur(12px);
}

.map-topbar strong {
  font-size: 0.92rem;
  letter-spacing: -0.02em;
}

.map-topbar span {
  padding: 0.34rem 0.6rem;
  border-radius: 999px;
  background: #e8f3ec;
  color: #32604c;
  font-size: 0.68rem;
  font-weight: 850;
}

.map-pin {
  position: absolute;
  width: 3.1rem;
  height: 3.1rem;
  border: 0.42rem solid rgba(255, 255, 255, 0.88);
  border-radius: 50% 50% 50% 18%;
  background: var(--brand);
  box-shadow: 0 12px 20px rgba(24, 53, 40, 0.24);
  transform: rotate(-45deg);
}

.map-pin::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--signal);
  content: "";
  transform: translate(-50%, -50%);
}

.pin-one {
  top: 34%;
  left: 25%;
}

.pin-two {
  top: 44%;
  right: 18%;
  width: 2.35rem;
  height: 2.35rem;
  background: var(--accent);
}

.map-card {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  left: 1rem;
  padding: 1.15rem;
  border: 1px solid rgba(29, 81, 61, 0.12);
  border-radius: 1.4rem;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-soft);
  color: #1b382b;
  backdrop-filter: blur(14px);
}

.map-card-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: #4d6257;
  font-size: 0.75rem;
  font-weight: 800;
}

.map-card h2,
.map-card-title {
  margin: 0.55rem 0 0;
  font-size: 1.18rem;
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.35;
}

.map-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.9rem;
}

.map-card-meta span {
  padding: 0.35rem 0.58rem;
  border-radius: 999px;
  background: #edf3ef;
  color: #3d574a;
  font-size: 0.69rem;
  font-weight: 800;
}

.section {
  padding: clamp(4.5rem, 9vw, 8rem) 0;
}

.section-quiet {
  background: var(--page-soft);
}

.section-dark {
  background: var(--ink);
  color: #f3f7f4;
}

.section-heading {
  display: grid;
  align-items: end;
  gap: 1.5rem;
  grid-template-columns: minmax(0, 1fr) minmax(16rem, 0.7fr);
}

.section-heading h2 {
  max-width: 14ch;
  margin: 0;
  font-size: clamp(2.25rem, 5vw, 4.3rem);
  font-weight: 900;
  letter-spacing: -0.065em;
  line-height: 1.02;
}

.section-heading p {
  max-width: 37rem;
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.04rem;
}

.section-dark .section-heading p {
  color: #b9c8c0;
}

.intro-grid {
  display: grid;
  gap: 1rem;
  margin-top: 3rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.intro-step {
  position: relative;
  min-height: 15.5rem;
  padding: 1.5rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.intro-step::after {
  position: absolute;
  right: -2rem;
  bottom: -3.6rem;
  color: var(--page-soft);
  content: attr(data-step);
  font-size: 9rem;
  font-weight: 950;
  letter-spacing: -0.09em;
  line-height: 1;
}

.intro-step strong,
.feature-card h3,
.safety-card h3 {
  display: block;
  margin: 0;
  font-size: 1.18rem;
  letter-spacing: -0.035em;
}

.intro-step p,
.feature-card p,
.safety-card p {
  position: relative;
  z-index: 1;
  margin: 0.75rem 0 0;
  color: var(--ink-soft);
}

.feature-grid {
  display: grid;
  gap: 1rem;
  margin-top: 3rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feature-card {
  min-height: 18rem;
  padding: clamp(1.4rem, 3vw, 2rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  transition:
    border-color 160ms ease,
    transform 160ms ease,
    box-shadow 160ms ease;
}

.feature-card:hover {
  border-color: rgba(29, 81, 61, 0.4);
  box-shadow: var(--shadow-soft);
  transform: translateY(-3px);
}

.feature-number {
  display: inline-flex;
  width: 2.45rem;
  height: 2.45rem;
  align-items: center;
  justify-content: center;
  margin-bottom: 4rem;
  border-radius: 50%;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 0.78rem;
  font-weight: 900;
}

.feature-card:nth-child(2) .feature-number,
.feature-card:nth-child(3) .feature-number {
  background: var(--accent-soft);
  color: #a83f24;
}

.safety-layout {
  display: grid;
  align-items: start;
  gap: 3rem;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.1fr);
}

.safety-copy {
  position: sticky;
  top: calc(var(--header-height) + 2rem);
}

.safety-copy h2 {
  margin: 0;
  font-size: clamp(2.35rem, 5vw, 4.5rem);
  font-weight: 900;
  letter-spacing: -0.065em;
  line-height: 1.02;
}

.safety-copy p {
  color: #b9c8c0;
}

.safety-list {
  display: grid;
  gap: 0.85rem;
}

.safety-card {
  padding: 1.4rem;
  border: 1px solid #34473e;
  border-radius: var(--radius-md);
  background: #192a22;
}

.safety-card p {
  color: #b9c8c0;
}

.safety-tag {
  display: inline-flex;
  margin-bottom: 1rem;
  padding: 0.32rem 0.58rem;
  border-radius: 999px;
  background: rgba(207, 233, 106, 0.13);
  color: #deeea2;
  font-size: 0.7rem;
  font-weight: 850;
}

.beta-panel {
  display: grid;
  position: relative;
  overflow: hidden;
  align-items: center;
  gap: 2rem;
  padding: clamp(2rem, 5vw, 4rem);
  border: 1px solid rgba(29, 81, 61, 0.14);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 92% 20%, rgba(207, 233, 106, 0.52), transparent 15rem),
    var(--brand-soft);
  grid-template-columns: minmax(0, 1fr) auto;
}

.beta-panel::after {
  position: absolute;
  right: -3rem;
  bottom: -7rem;
  width: 18rem;
  height: 18rem;
  border: 2rem solid rgba(255, 255, 255, 0.35);
  border-radius: 50%;
  content: "";
}

.beta-panel h2 {
  max-width: 15ch;
  margin: 0;
  font-size: clamp(2.4rem, 5vw, 4.4rem);
  font-weight: 900;
  letter-spacing: -0.065em;
  line-height: 1;
}

.beta-panel p {
  max-width: 40rem;
  margin: 1.2rem 0 0;
  color: #466052;
}

.beta-state {
  display: grid;
  position: relative;
  z-index: 1;
  width: 9.5rem;
  height: 9.5rem;
  place-items: center;
  border: 1px solid rgba(29, 81, 61, 0.18);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.66);
  color: var(--brand);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-align: center;
}

.contact-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 2rem 0;
  border-top: 1px solid var(--line);
}

.contact-strip h2 {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  letter-spacing: -0.05em;
}

.contact-strip p {
  margin: 0.4rem 0 0;
  color: var(--ink-soft);
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--brand);
  font-weight: 850;
  overflow-wrap: anywhere;
}

.site-footer {
  padding: 3rem 0 2rem;
  border-top: 1px solid var(--line);
  background: var(--surface-strong);
}

.footer-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(0, 1fr) auto;
}

.footer-brand p {
  max-width: 29rem;
  margin: 1rem 0 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  justify-content: flex-end;
  gap: 0.7rem 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-links a {
  color: var(--ink-soft);
  font-size: 0.88rem;
  font-weight: 700;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.page-hero {
  padding: clamp(4.5rem, 9vw, 7.5rem) 0 3.5rem;
  border-bottom: 1px solid var(--line);
}

.page-hero h1 {
  max-width: 14ch;
  margin: 0;
  font-size: clamp(2.8rem, 6vw, 5.8rem);
  font-weight: 900;
  letter-spacing: -0.07em;
  line-height: 0.98;
}

.page-hero .page-lead {
  max-width: 45rem;
  margin: 1.4rem 0 0;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

.page-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1.5rem;
  margin-top: 1.5rem;
  color: var(--ink-soft);
  font-size: 0.82rem;
  font-weight: 700;
}

.document-layout {
  display: grid;
  align-items: start;
  gap: 4rem;
  padding: clamp(3.5rem, 8vw, 7rem) 0;
  grid-template-columns: 15rem minmax(0, 1fr);
}

.document-nav {
  position: sticky;
  top: calc(var(--header-height) + 2rem);
}

.document-nav h2 {
  margin: 0 0 1rem;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.document-nav ol {
  display: grid;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.document-nav a {
  display: block;
  padding: 0.35rem 0;
  color: var(--ink-soft);
  font-size: 0.84rem;
  font-weight: 700;
  text-decoration: none;
}

.document-nav a:hover {
  color: var(--brand);
}

.legal-document {
  max-width: 48rem;
}

.legal-notice {
  margin-bottom: 2.5rem;
  padding: 1.25rem;
  border-left: 0.32rem solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--accent-soft);
  color: #67311f;
}

.legal-document section + section {
  margin-top: 3.25rem;
  padding-top: 3.25rem;
  border-top: 1px solid var(--line);
}

.legal-document h2 {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.045em;
  line-height: 1.25;
}

.legal-document h3 {
  margin: 1.8rem 0 0.5rem;
  font-size: 1.05rem;
  letter-spacing: -0.025em;
}

.legal-document p,
.legal-document li {
  color: var(--ink-soft);
}

.legal-document ul,
.legal-document ol {
  padding-left: 1.35rem;
}

.legal-document li + li {
  margin-top: 0.45rem;
}

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

.legal-document a {
  color: var(--brand);
  font-weight: 750;
}

.callout {
  margin-top: 1.25rem;
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
}

.callout p {
  margin: 0;
}

.support-grid {
  display: grid;
  gap: 1rem;
  padding: 3.5rem 0 6.5rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.support-card {
  display: flex;
  min-height: 17rem;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.support-card .card-kicker {
  color: var(--brand);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.support-card h2 {
  margin: 1rem 0 0;
  font-size: 1.4rem;
  letter-spacing: -0.04em;
}

.support-card p {
  margin: 0.65rem 0 0;
  color: var(--ink-soft);
}

.support-card a {
  margin-top: 1.5rem;
  color: var(--brand);
  font-weight: 850;
}

.support-email-panel {
  display: grid;
  gap: 1.5rem;
  margin-top: 2rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border-radius: var(--radius-md);
  background: var(--ink);
  color: #ffffff;
  grid-template-columns: minmax(0, 1fr) auto;
}

.support-email-panel h2 {
  margin: 0;
  font-size: clamp(1.65rem, 3.5vw, 2.7rem);
  letter-spacing: -0.05em;
}

.support-email-panel p {
  max-width: 38rem;
  margin: 0.7rem 0 0;
  color: #b9c8c0;
}

.support-email-panel a {
  align-self: center;
  color: #e6f29e;
  font-weight: 900;
  overflow-wrap: anywhere;
}

.error-page {
  display: grid;
  min-height: calc(100vh - var(--header-height));
  place-items: center;
  padding: 4rem 0;
}

.error-card {
  max-width: 44rem;
  text-align: center;
}

.error-code {
  display: inline-grid;
  width: 7rem;
  height: 7rem;
  place-items: center;
  border-radius: 50% 50% 50% 18%;
  background: var(--brand);
  color: #ffffff;
  font-size: 1.3rem;
  font-weight: 950;
  transform: rotate(-45deg);
}

.error-code span {
  transform: rotate(45deg);
}

.error-card h1 {
  margin: 2rem 0 0;
  font-size: clamp(2.4rem, 6vw, 4.8rem);
  letter-spacing: -0.07em;
  line-height: 1;
}

.error-card p {
  max-width: 35rem;
  margin: 1.2rem auto 0;
  color: var(--ink-soft);
}

.error-card .button-row {
  justify-content: center;
}

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

@media (max-width: 56rem) {
  :root {
    --header-height: 4.5rem;
  }

  .nav-menu summary {
    display: grid;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: calc(100% + 0.75rem);
    right: 0;
    width: min(19rem, calc(100vw - 2rem));
    padding: 0.65rem;
    border: 1px solid var(--line);
    border-radius: 1.15rem;
    background: var(--surface);
    box-shadow: var(--shadow);
  }

  .nav-menu[open] .nav-links {
    display: grid;
  }

  .nav-links a {
    width: 100%;
    padding-inline: 0.85rem;
  }

  .nav-links .nav-contact {
    margin: 0.3rem 0 0;
    justify-content: center;
  }

  .hero-grid,
  .section-heading,
  .safety-layout,
  .beta-panel,
  .document-layout,
  .support-email-panel {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-copy h1 {
    max-width: 10ch;
  }

  .map-visual {
    min-height: 29rem;
  }

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

  .intro-step {
    min-height: 13rem;
  }

  .safety-copy,
  .document-nav {
    position: static;
  }

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

  .beta-state {
    width: 8rem;
    height: 8rem;
  }

  .support-email-panel a {
    justify-self: start;
  }
}

@media (max-width: 42rem) {
  .container {
    width: min(calc(100% - 1.25rem), var(--content));
  }

  .brand-name span {
    display: none;
  }

  .hero {
    padding-top: 3.8rem;
  }

  .hero-copy h1 {
    font-size: clamp(2.85rem, 16vw, 4.4rem);
  }

  .hero-actions,
  .button-row {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .map-visual {
    min-height: 26rem;
    border-radius: 2rem 2rem 2rem 0.7rem;
  }

  .map-topbar {
    align-items: flex-start;
  }

  .feature-grid,
  .support-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .feature-card {
    min-height: 15rem;
  }

  .feature-number {
    margin-bottom: 2.5rem;
  }

  .contact-strip,
  .footer-grid,
  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-grid {
    display: flex;
  }

  .footer-links {
    justify-content: flex-start;
  }

  .document-layout {
    gap: 2.5rem;
  }

  .document-nav ol {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-hero {
    padding-top: 3.75rem;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --page: #0f1713;
    --page-soft: #131f1a;
    --surface: #18251f;
    --surface-strong: #121d18;
    --ink: #eef4f0;
    --ink-soft: #aebdb5;
    --line: #304139;
    --brand: #8dc6a8;
    --brand-strong: #b7dec9;
    --brand-soft: #203a2e;
    --accent: #ff8b68;
    --accent-soft: #43271f;
    --signal: #d7eb83;
    --shadow: 0 24px 70px rgba(0, 0, 0, 0.32);
    --shadow-soft: 0 12px 32px rgba(0, 0, 0, 0.23);
  }

  body {
    background:
      radial-gradient(circle at 6% 5%, rgba(207, 233, 106, 0.08), transparent 24rem),
      var(--page);
  }

  .site-header {
    background: rgba(15, 23, 19, 0.88);
  }

  .brand-mark {
    background: #8dc6a8;
    color: #102019;
  }

  .nav-links .nav-contact,
  .button {
    background: #eef4f0;
    color: #122019;
  }

  .nav-links .nav-contact:hover,
  .button:hover {
    color: #ffffff;
  }

  .button-secondary {
    background: transparent;
    color: var(--ink);
  }

  .map-visual {
    border-color: #3c574a;
    filter: brightness(0.88) saturate(0.85);
  }

  .legal-notice {
    color: #f4c1b1;
  }

  .section-dark,
  .support-email-panel {
    background: #09100d;
  }

  .beta-panel {
    background:
      radial-gradient(circle at 92% 20%, rgba(207, 233, 106, 0.16), transparent 15rem),
      #193328;
  }

  .beta-panel p {
    color: #b9cbc1;
  }

  .beta-state {
    background: rgba(15, 23, 19, 0.55);
  }

  .support-email-panel a {
    color: #e6f29e;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}