:root {
  --ink: #171622;
  --ink-soft: #2d3146;
  --muted: #687084;
  --line: rgba(23, 22, 34, .13);
  --paper: #ffffff;
  --page: #f8f7f3;
  --band: #edf5ef;
  --deep: #101424;
  --gold: #f1bd49;
  --green: #27745c;
  --coral: #d8664a;
  --blue: #2867b9;
  --shadow: 0 22px 60px rgba(17, 20, 36, .22);
  --soft-shadow: 0 12px 26px rgba(17, 20, 36, .09);
  --radius: 8px;
  --max: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--page);
  font-family: "IBM Plex Sans KR", system-ui, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  word-break: keep-all;
  overflow-x: hidden;
}

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

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

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

.container {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.topbar {
  position: fixed;
  inset: 0 0 auto;
  z-index: 30;
  color: #fff;
  background: rgba(16, 20, 36, .82);
  border-bottom: 1px solid rgba(255, 255, 255, .13);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 0;
  white-space: nowrap;
}

.brand img {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  box-shadow: 0 12px 26px rgba(0, 0, 0, .22);
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.nav-links a {
  padding: 9px 12px;
  border-radius: var(--radius);
  color: rgba(255, 255, 255, .75);
  font-size: 14px;
  font-weight: 800;
}

.nav-links a:hover {
  color: #fff;
  background: rgba(255, 255, 255, .10);
}

.nav-actions {
  display: flex;
  justify-content: flex-end;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 17px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 900;
  line-height: 1.2;
  white-space: nowrap;
  transition: transform .18s ease, background .18s ease, border-color .18s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn.primary {
  color: #221908;
  background: var(--gold);
  box-shadow: 0 12px 28px rgba(241, 189, 73, .28);
}

.btn.secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, .24);
  background: rgba(255, 255, 255, .10);
}

.btn.dark {
  color: #fff;
  background: var(--ink);
  box-shadow: var(--soft-shadow);
}

.hero {
  position: relative;
  min-height: 88svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: #fff;
  background: var(--deep);
  padding: 120px 0 72px;
}

.hero-bg,
.hero-scrim {
  position: absolute;
  inset: 0;
}

.hero-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 64% center;
  opacity: .72;
  filter: saturate(1.04) contrast(1.05);
}

.hero-scrim {
  background:
    linear-gradient(90deg, rgba(9, 11, 25, .95) 0%, rgba(9, 11, 25, .70) 46%, rgba(9, 11, 25, .20) 100%),
    linear-gradient(0deg, rgba(9, 11, 25, .78) 0%, rgba(9, 11, 25, .12) 54%, rgba(9, 11, 25, .50) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  color: rgba(255, 255, 255, .82);
  font-size: 14px;
  font-weight: 900;
}

.eyebrow::before {
  content: "";
  width: 34px;
  height: 3px;
  border-radius: 999px;
  background: var(--gold);
}

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

h1 {
  margin-bottom: 18px;
  font-size: 84px;
  line-height: 1;
  font-weight: 900;
  letter-spacing: 0;
}

.hero-title {
  max-width: 760px;
  margin-bottom: 18px;
  font-size: 31px;
  line-height: 1.36;
  font-weight: 800;
}

.hero-desc {
  max-width: 700px;
  margin-bottom: 0;
  color: rgba(255, 255, 255, .77);
  font-size: 18px;
  line-height: 1.82;
  font-weight: 600;
}

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

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.hero-tags span {
  padding: 9px 12px;
  border: 1px solid rgba(255, 255, 255, .20);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .09);
  color: rgba(255, 255, 255, .82);
  font-size: 13px;
  font-weight: 800;
}

.summary-band {
  padding: 28px 0 34px;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.summary-item,
.feature-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--soft-shadow);
}

.summary-item {
  min-height: 126px;
  padding: 22px;
}

.summary-item strong {
  display: block;
  margin-bottom: 8px;
  font-size: 22px;
  line-height: 1.32;
  font-weight: 900;
}

.summary-item span {
  display: block;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.68;
  font-weight: 600;
}

section {
  position: relative;
}

.showcase {
  padding: 104px 0;
  background: var(--page);
}

.showcase.alt {
  background: var(--band);
}

.showcase.dark {
  color: #fff;
  background: var(--deep);
}

.showcase-grid {
  display: grid;
  grid-template-columns: minmax(0, .92fr) minmax(400px, 1fr);
  align-items: center;
  gap: 68px;
}

.showcase.reverse .show-copy {
  order: 2;
}

.showcase.reverse .show-media {
  order: 1;
}

.section-kicker {
  margin-bottom: 12px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 900;
}

.showcase.dark .section-kicker {
  color: #9bd7c6;
}

h2 {
  margin-bottom: 18px;
  font-size: 52px;
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: 0;
}

.section-desc {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.82;
  font-weight: 600;
}

.showcase.dark .section-desc {
  color: rgba(255, 255, 255, .75);
}

.feature-list {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
}

.feature-list li {
  position: relative;
  padding: 14px 16px 14px 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .82);
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.65;
  font-weight: 700;
  box-shadow: 0 8px 18px rgba(17, 20, 36, .05);
}

.showcase.dark .feature-list li {
  border-color: rgba(255, 255, 255, .15);
  background: rgba(255, 255, 255, .08);
  color: rgba(255, 255, 255, .82);
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 23px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--green);
}

.feature-list li:nth-child(2)::before {
  background: var(--gold);
}

.feature-list li:nth-child(3)::before {
  background: var(--coral);
}

.show-media {
  min-width: 0;
}

.art-panel {
  overflow: hidden;
  border-radius: 8px;
  background: var(--deep);
  box-shadow: var(--shadow);
}

.art-panel img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.mock-phone {
  width: min(100%, 350px);
  margin: 0 auto;
  padding: 15px;
  border-radius: 34px;
  background: #11131f;
  box-shadow: var(--shadow);
}

.screen {
  min-height: 560px;
  border-radius: 24px;
  overflow: hidden;
  background: #fffaf0;
  border: 1px solid rgba(255, 255, 255, .12);
}

.screen-top {
  padding: 20px;
  color: #fff;
  background: var(--deep);
}

.screen-top strong {
  display: block;
  font-size: 18px;
  line-height: 1.4;
}

.screen-top span {
  display: block;
  margin-top: 6px;
  color: rgba(255, 255, 255, .67);
  font-size: 13px;
  font-weight: 700;
}

.book-lines {
  padding: 22px 20px;
}

.book-line {
  height: 14px;
  margin-bottom: 13px;
  border-radius: 999px;
  background: #e8dfd0;
}

.book-line.short {
  width: 66%;
}

.book-note {
  margin: 22px 20px 0;
  padding: 14px;
  border-radius: 8px;
  color: #2d2518;
  background: #f7dfa2;
  font-size: 14px;
  line-height: 1.6;
  font-weight: 800;
}

.screen-actions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 24px 20px;
}

.screen-actions span {
  min-height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  color: #fff;
  background: var(--green);
  font-size: 13px;
  font-weight: 900;
}

.screen-actions span:nth-child(2) {
  background: var(--blue);
}

.screen-actions span:nth-child(3) {
  color: #241a08;
  background: var(--gold);
}

.feature-section {
  padding: 100px 0;
  background: #fff;
}

.section-head {
  max-width: 760px;
  margin: 0 auto 42px;
  text-align: center;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.feature-card {
  min-height: 214px;
  padding: 24px;
}

.feature-card strong {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 32px;
  margin-bottom: 20px;
  border-radius: 8px;
  color: #fff;
  background: var(--ink);
  font-size: 14px;
  font-weight: 900;
}

.feature-card:nth-child(2) strong,
.feature-card:nth-child(5) strong {
  background: var(--green);
}

.feature-card:nth-child(3) strong,
.feature-card:nth-child(6) strong {
  color: #231908;
  background: var(--gold);
}

.feature-card h3 {
  margin-bottom: 10px;
  font-size: 21px;
  line-height: 1.36;
  font-weight: 900;
}

.feature-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.72;
  font-weight: 600;
}

.cta {
  padding: 92px 0 98px;
  color: #fff;
  background: var(--deep);
  overflow: hidden;
}

.cta-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 48px;
}

.cta h2 {
  margin-bottom: 16px;
  font-size: 52px;
}

.cta p {
  max-width: 760px;
  margin-bottom: 0;
  color: rgba(255, 255, 255, .75);
  font-size: 18px;
  line-height: 1.8;
  font-weight: 600;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.cta-icon {
  width: 132px;
  height: 132px;
  border-radius: 28px;
  box-shadow: 0 24px 50px rgba(0, 0, 0, .28);
}

footer {
  padding: 30px 0 44px;
  color: rgba(23, 22, 34, .62);
  background: #fff;
  border-top: 1px solid var(--line);
  font-size: 13px;
  font-weight: 700;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.policy-page {
  background: #f7f6f0;
}

.policy-hero {
  padding: 116px 0 36px;
  color: #fff;
  background: var(--deep);
}

.policy-hero h1 {
  margin-bottom: 12px;
  font-size: 52px;
}

.policy-hero p {
  max-width: 760px;
  margin-bottom: 0;
  color: rgba(255, 255, 255, .76);
  font-size: 17px;
  line-height: 1.76;
  font-weight: 600;
}

.policy-content {
  max-width: 920px;
  margin: 28px auto 72px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--soft-shadow);
}

.policy-content h2 {
  margin: 34px 0 12px;
  font-size: 25px;
  line-height: 1.36;
}

.policy-content h2:first-child {
  margin-top: 0;
}

.policy-content h3 {
  margin: 22px 0 8px;
  font-size: 18px;
  line-height: 1.45;
}

.policy-content p,
.policy-content li {
  color: #37394a;
  font-size: 15px;
  line-height: 1.82;
}

.policy-content ul,
.policy-content ol {
  padding-left: 22px;
}

.policy-content a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.policy-note {
  padding: 14px 16px;
  border-radius: 8px;
  color: #2d2518;
  background: #fff1cf;
  border: 1px solid #f0d48d;
}

.redirect-box {
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 24px;
  background: var(--page);
}

.redirect-box > div {
  max-width: 520px;
  padding: 28px;
  border-radius: 8px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--soft-shadow);
}

.redirect-box h1 {
  margin-bottom: 12px;
  font-size: 28px;
}

.redirect-box p {
  color: var(--muted);
  line-height: 1.7;
}

.redirect-box a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 800;
}

.redirect-box a.btn {
  color: #fff;
  text-decoration: none;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s ease, transform .7s ease;
}

.reveal.in {
  opacity: 1;
  transform: none;
}

@media (max-width: 1080px) {
  .nav-links {
    display: none;
  }

  .showcase-grid,
  .cta-grid {
    grid-template-columns: 1fr;
  }

  .showcase.reverse .show-copy,
  .showcase.reverse .show-media {
    order: initial;
  }

  .show-copy {
    max-width: 760px;
  }

  .show-media {
    max-width: 760px;
  }

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

  h1 {
    font-size: 68px;
  }

  h2,
  .cta h2 {
    font-size: 44px;
  }

  .hero-title {
    font-size: 28px;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(100% - 28px, var(--max));
  }

  .nav {
    min-height: 66px;
  }

  .brand {
    font-size: 19px;
  }

  .brand img {
    width: 40px;
    height: 40px;
  }

  .nav-actions {
    display: none;
  }

  .hero {
    min-height: 86svh;
    align-items: flex-end;
    padding: 104px 0 48px;
  }

  .hero-bg {
    object-position: center center;
    opacity: .54;
  }

  .hero-scrim {
    background:
      linear-gradient(0deg, rgba(9, 11, 25, .96) 0%, rgba(9, 11, 25, .78) 58%, rgba(9, 11, 25, .48) 100%);
  }

  h1 {
    font-size: 50px;
  }

  .hero-title {
    font-size: 24px;
  }

  .hero-desc,
  .section-desc,
  .cta p {
    font-size: 16px;
  }

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

  .showcase,
  .feature-section,
  .cta {
    padding: 68px 0;
  }

  .showcase-grid {
    gap: 34px;
  }

  h2,
  .cta h2 {
    font-size: 34px;
  }

  .screen {
    min-height: 500px;
  }

  .cta-icon {
    width: 104px;
    height: 104px;
    border-radius: 22px;
  }

  .policy-hero {
    padding-top: 96px;
  }

  .policy-hero h1 {
    font-size: 38px;
  }

  .policy-content {
    margin-top: 18px;
    padding: 22px;
  }

  .policy-content h2 {
    font-size: 22px;
  }
}

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

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .btn {
    transition: none;
  }
}