:root {
  --ink: #18201d;
  --ink-soft: #53605a;
  --paper: #f8f6ef;
  --paper-deep: #eee9dc;
  --surface: #fffdf7;
  --lime: #d9ff67;
  --lime-dark: #527000;
  --violet: #735cff;
  --violet-soft: #e9e5ff;
  --coral: #ff7c63;
  --line: rgba(24, 32, 29, 0.14);
  --shadow: 0 18px 50px rgba(34, 43, 39, 0.10);
  --radius-sm: 0.75rem;
  --radius-md: 1.25rem;
  --radius-lg: 2rem;
  --max-width: 72rem;
  --font-sans: "Pretendard", "Noto Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 20rem;
  color: var(--ink);
  background:
    radial-gradient(circle at 100% 0%, rgba(115, 92, 255, 0.10), transparent 28rem),
    var(--paper);
  font-family: var(--font-sans);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

body::before {
  position: fixed;
  z-index: -1;
  inset: 0;
  background-image: radial-gradient(rgba(24, 32, 29, 0.12) 0.7px, transparent 0.7px);
  background-size: 18px 18px;
  mask-image: linear-gradient(to bottom, black, transparent 48rem);
  content: "";
  pointer-events: none;
}

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

a {
  color: inherit;
}

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

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.7rem 1rem;
  border-radius: 999px;
  background: var(--ink);
  color: white;
  font-weight: 800;
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

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

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

.site-header {
  position: sticky;
  z-index: 30;
  top: 0;
  border-bottom: 1px solid transparent;
  background: rgba(248, 246, 239, 0.84);
  backdrop-filter: blur(18px);
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
}

.nav-wrap {
  display: flex;
  min-height: 4.75rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink);
  font-size: 0.98rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 2.25rem;
  height: 2.25rem;
  place-items: center;
  border: 2px solid var(--ink);
  border-radius: 0.7rem;
  background: var(--lime);
  box-shadow: 3px 3px 0 var(--ink);
  font-size: 0.72rem;
  transform: rotate(-4deg);
}

.menu-toggle {
  display: inline-grid;
  width: 2.8rem;
  height: 2.8rem;
  padding: 0;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
}

.menu-toggle-lines,
.menu-toggle-lines::before,
.menu-toggle-lines::after {
  display: block;
  width: 1.15rem;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  content: "";
  transition: transform 160ms ease;
}

.menu-toggle-lines::before {
  transform: translateY(-5px);
}

.menu-toggle-lines::after {
  transform: translateY(3px);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-lines {
  background: transparent;
}

.menu-toggle[aria-expanded="true"] .menu-toggle-lines::before {
  transform: translateY(2px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-lines::after {
  transform: rotate(-45deg);
}

.site-nav {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 1rem;
  left: 1rem;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.site-nav[hidden] {
  display: none;
}

.nav-list {
  display: grid;
  margin: 0;
  padding: 0;
  gap: 0.2rem;
  list-style: none;
}

.nav-link {
  display: flex;
  min-height: 2.75rem;
  padding: 0.5rem 0.8rem;
  align-items: center;
  border-radius: 0.7rem;
  color: var(--ink-soft);
  font-size: 0.9rem;
  font-weight: 750;
  text-decoration: none;
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  background: var(--violet-soft);
  color: var(--ink);
}

main {
  overflow: hidden;
}

.hero {
  padding: clamp(4rem, 11vw, 8.5rem) 0 4.5rem;
}

.hero-grid {
  display: grid;
  align-items: center;
  gap: 3rem;
}

.eyebrow {
  display: inline-flex;
  margin: 0 0 1.1rem;
  padding: 0.35rem 0.7rem;
  align-items: center;
  gap: 0.45rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: var(--lime);
  color: var(--ink);
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--coral);
  content: "";
}

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

h1,
h2,
h3 {
  line-height: 1.12;
  letter-spacing: -0.055em;
}

h1 {
  max-width: 13ch;
  margin-bottom: 1.4rem;
  font-size: clamp(2.65rem, 11vw, 6.6rem);
}

.page-hero h1 {
  max-width: 14ch;
  font-size: clamp(2.5rem, 9vw, 5.6rem);
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(2rem, 6vw, 3.7rem);
}

h3 {
  margin-bottom: 0.7rem;
  font-size: 1.35rem;
}

.hero-copy,
.section-intro,
.lead {
  max-width: 42rem;
  color: var(--ink-soft);
  font-size: clamp(1rem, 2vw, 1.2rem);
  word-break: keep-all;
}

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

.button {
  display: inline-flex;
  min-height: 3rem;
  padding: 0.75rem 1.1rem;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: 2px solid var(--ink);
  border-radius: 999px;
  background: var(--ink);
  color: white;
  font-weight: 850;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.button:hover {
  box-shadow: 4px 4px 0 var(--coral);
  transform: translate(-2px, -2px);
}

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

.hero-art {
  position: relative;
  min-height: 19rem;
}

.orbit-card {
  position: absolute;
  display: grid;
  border: 2px solid var(--ink);
  border-radius: var(--radius-lg);
  place-items: center;
  box-shadow: 8px 8px 0 var(--ink);
}

.orbit-card-main {
  inset: 1rem 8% 1.5rem 5%;
  overflow: hidden;
  background: var(--violet);
  color: white;
  transform: rotate(3deg);
}

.orbit-card-main::before,
.orbit-card-main::after {
  position: absolute;
  width: 11rem;
  height: 11rem;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 50%;
  content: "";
}

.orbit-card-main::after {
  width: 17rem;
  height: 17rem;
}

.nova-symbol {
  z-index: 1;
  font-size: clamp(4rem, 18vw, 8rem);
  font-weight: 950;
  letter-spacing: -0.12em;
  line-height: 1;
  text-shadow: 5px 5px 0 var(--ink);
  transform: translateX(-0.08em);
}

.orbit-chip {
  position: absolute;
  z-index: 2;
  padding: 0.6rem 0.8rem;
  border: 2px solid var(--ink);
  border-radius: 999px;
  background: var(--lime);
  font-size: 0.77rem;
  font-weight: 900;
}

.orbit-chip-top {
  top: 0;
  right: 0;
  transform: rotate(7deg);
}

.orbit-chip-bottom {
  bottom: 0;
  left: 0;
  background: var(--coral);
  transform: rotate(-5deg);
}

.section {
  padding: clamp(4.5rem, 9vw, 7.5rem) 0;
}

.section-tint {
  border-block: 1px solid var(--line);
  background: rgba(255, 253, 247, 0.72);
}

.section-head {
  display: flex;
  margin-bottom: 2rem;
  align-items: end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.text-link {
  color: var(--violet);
  font-weight: 850;
  text-underline-offset: 0.25em;
}

.card-grid {
  display: grid;
  gap: 1rem;
}

.card {
  padding: clamp(1.35rem, 4vw, 2rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.8) inset;
}

.card p:last-child {
  margin-bottom: 0;
}

.card-kicker,
.meta-label {
  display: block;
  margin-bottom: 0.65rem;
  color: var(--violet);
  font-size: 0.73rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.app-card {
  display: grid;
  min-height: 19rem;
  align-content: space-between;
  overflow: hidden;
}

.app-card-featured {
  border: 2px solid var(--ink);
  background: var(--lime);
  box-shadow: 7px 7px 0 var(--ink);
}

.app-status {
  display: inline-flex;
  width: fit-content;
  padding: 0.3rem 0.6rem;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 850;
}

.app-meta {
  display: flex;
  margin: 1.2rem 0 0;
  padding: 0;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
}

.app-meta li {
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  background: rgba(24, 32, 29, 0.08);
  font-size: 0.74rem;
  font-weight: 750;
}

.feature-list,
.check-list,
.plain-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.feature-list {
  display: grid;
  gap: 0.75rem;
}

.feature-list li {
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: 0.75rem;
  align-items: start;
}

.feature-list li::before {
  display: grid;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  place-items: center;
  background: var(--violet-soft);
  color: var(--violet);
  content: "✓";
  font-weight: 950;
}

.steps {
  display: grid;
  gap: 1rem;
  counter-reset: steps;
}

.step {
  position: relative;
  padding: 1.5rem 1.5rem 1.5rem 4.7rem;
  border-top: 1px solid var(--line);
  counter-increment: steps;
}

.step::before {
  position: absolute;
  top: 1.2rem;
  left: 0;
  display: grid;
  width: 3.25rem;
  height: 3.25rem;
  border: 2px solid var(--ink);
  border-radius: 1rem;
  place-items: center;
  background: var(--coral);
  content: counter(steps, decimal-leading-zero);
  font-weight: 950;
  transform: rotate(-3deg);
}

.notice {
  padding: 1.2rem 1.35rem;
  border-left: 5px solid var(--violet);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--violet-soft);
}

.notice strong {
  display: block;
  margin-bottom: 0.35rem;
}

.faq-list {
  display: grid;
  gap: 0.75rem;
}

.faq {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
}

.faq summary {
  padding: 1.15rem 3rem 1.15rem 1.15rem;
  cursor: pointer;
  font-weight: 850;
}

.faq div {
  padding: 0 1.15rem 1.15rem;
  color: var(--ink-soft);
}

.faq div p:last-child {
  margin-bottom: 0;
}

.policy-section {
  padding: 2rem 0;
  border-top: 1px solid var(--line);
}

.policy-section h2 {
  font-size: clamp(1.6rem, 5vw, 2.35rem);
}

.cta-band {
  display: grid;
  padding: clamp(2rem, 6vw, 4rem);
  border: 2px solid var(--ink);
  border-radius: var(--radius-lg);
  background: var(--violet);
  color: white;
  box-shadow: 9px 9px 0 var(--ink);
  gap: 1.25rem;
}

.cta-band h2 {
  margin-bottom: 0.5rem;
}

.cta-band p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.78);
}

.site-footer {
  padding: 3.5rem 0 2rem;
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: grid;
  gap: 2rem;
}

.footer-note {
  max-width: 28rem;
  margin: 1rem 0 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.footer-links {
  display: flex;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  list-style: none;
}

.footer-links a {
  color: var(--ink-soft);
  font-size: 0.88rem;
  font-weight: 750;
  text-underline-offset: 0.2em;
}

.copyright {
  margin: 2rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.78rem;
}

@media (min-width: 43rem) {
  .container {
    width: min(calc(100% - 3rem), var(--max-width));
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(18rem, 0.92fr);
  }

  .hero-art {
    min-height: 27rem;
  }

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

  .card-grid-three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .cta-band {
    grid-template-columns: 1fr auto;
    align-items: center;
  }

  .footer-grid {
    grid-template-columns: 1fr auto;
    align-items: start;
  }
}

@media (min-width: 58rem) {
  .menu-toggle {
    display: none;
  }

  .site-nav,
  .site-nav[hidden] {
    position: static;
    display: block;
    padding: 0;
    border: 0;
    background: transparent;
    box-shadow: none;
  }

  .nav-list {
    display: flex;
  }

  .nav-link {
    padding-inline: 0.72rem;
  }
}

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