:root {
  color-scheme: light;
  --ink: #0f172a;
  --muted: #5b6879;
  --blue: #0f4c81;
  --blue-bright: #1671ba;
  --blue-soft: #eaf5fd;
  --line: #dce8f1;
  --paper: #ffffff;
  --background: #f7fbff;
  --shadow: 0 24px 70px rgba(15, 76, 129, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family:
    Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR",
    sans-serif;
  line-height: 1.65;
  word-break: keep-all;
}

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

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  color: white;
  background: var(--blue);
  border-radius: 8px;
  transform: translateY(-150%);
}

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

.shell {
  width: min(1160px, calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid rgba(220, 232, 241, 0.8);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(18px);
}

.nav-shell {
  display: flex;
  width: min(1160px, calc(100% - 48px));
  min-height: 72px;
  align-items: center;
  margin-inline: auto;
  gap: 36px;
}

.brand {
  display: inline-flex;
  align-items: center;
}

.brand-logo {
  width: 102px;
  height: auto;
}

.footer-logo {
  filter: brightness(0) invert(1);
}

.site-header nav {
  display: flex;
  align-items: center;
  margin-left: auto;
  gap: 30px;
  color: #405065;
  font-size: 14px;
  font-weight: 650;
}

.site-header nav a,
footer nav a {
  transition: color 160ms ease;
}

.site-header nav a:hover,
footer nav a:hover {
  color: var(--blue-bright);
}

.nav-download {
  padding: 9px 17px;
  color: white;
  background: var(--blue);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 750;
}

.download-dialog {
  width: min(720px, calc(100% - 40px));
  max-width: none;
  padding: 0;
  overflow: visible;
  border: 0;
  border-radius: 30px;
  color: var(--ink);
  background: white;
  box-shadow: 0 35px 100px rgba(15, 23, 42, 0.28);
}

.download-dialog::backdrop {
  background: rgba(7, 20, 35, 0.58);
  backdrop-filter: blur(5px);
}

.download-dialog-card {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 42px;
  padding: 52px;
}

.dialog-close {
  position: absolute;
  top: 17px;
  right: 17px;
  display: grid;
  width: 38px;
  height: 38px;
  padding: 0;
  place-items: center;
  color: #526174;
  background: #f1f6fa;
  border: 0;
  border-radius: 50%;
  cursor: pointer;
  font: inherit;
  font-size: 25px;
  line-height: 1;
}

.dialog-close:hover {
  color: var(--ink);
  background: #e4eef5;
}

.dialog-close:focus-visible,
.nav-download:focus-visible {
  outline: 3px solid rgba(22, 113, 186, 0.35);
  outline-offset: 3px;
}

.dialog-copy h2 {
  margin: 0;
  font-size: 34px;
  line-height: 1.28;
  letter-spacing: -0.05em;
}

.dialog-copy > p:not(.eyebrow) {
  margin: 18px 0;
  color: var(--muted);
  font-size: 14px;
}

.dialog-copy > a {
  color: var(--blue);
  font-size: 13px;
  font-weight: 750;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.qr-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.qr-frame {
  width: 220px;
  padding: 15px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 15px 35px rgba(15, 76, 129, 0.12);
}

.qr-panel b {
  margin-top: 15px;
  font-size: 14px;
}

.qr-panel small {
  max-width: 230px;
  margin-top: 5px;
  color: var(--muted);
  font-size: 11px;
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: 760px;
  background:
    radial-gradient(circle at 16% 30%, rgba(208, 235, 254, 0.7), transparent 35%),
    linear-gradient(160deg, #fbfdff 10%, #f1f8fd 100%);
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  min-height: 760px;
  grid-template-columns: 1.04fr 0.96fr;
  align-items: center;
  gap: 72px;
}

.hero-copy {
  padding-block: 80px;
}

.eyebrow {
  margin: 0 0 17px;
  color: var(--blue-bright);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.hero h1 {
  margin: 0;
  font-size: clamp(43px, 5vw, 67px);
  line-height: 1.14;
  letter-spacing: -0.065em;
}

.hero h1 span {
  color: var(--blue);
}

.hero-description {
  margin: 28px 0 31px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
}

.store-actions {
  display: flex;
  align-items: stretch;
  gap: 12px;
}

.store-badge-link,
.store-badge-pending {
  display: flex;
  width: 175px;
  height: 58px;
  align-items: center;
  justify-content: center;
}

.store-badge-link {
  transition:
    transform 160ms ease,
    filter 160ms ease;
}

.store-badge-link:hover {
  filter: brightness(1.08);
  transform: translateY(-2px);
}

.store-badge-link img {
  width: 100%;
  height: 100%;
  object-fit: fill;
}

.store-badge-pending {
  gap: 11px;
  color: #7b8794;
  background: #edf1f5;
  border: 1px solid #d2dae2;
  border-radius: 9px;
  cursor: not-allowed;
}

.play-store-mark {
  width: 25px;
  height: 28px;
  flex: 0 0 auto;
  color: #a8b1bb;
}

.store-disabled-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.1;
}

.store-disabled-copy small {
  margin-bottom: 4px;
  color: #8b96a2;
  font-size: 8px;
  font-weight: 650;
}

.store-disabled-copy b {
  font-size: 15px;
  font-weight: 750;
}

.hero-visual {
  position: relative;
  height: 690px;
}

.hero-phone {
  position: absolute;
  z-index: 2;
  right: 64px;
  bottom: -145px;
  width: 370px;
  border: 8px solid rgba(255, 255, 255, 0.94);
  border-radius: 42px 42px 0 0;
  box-shadow: var(--shadow);
}

.phone-shadow {
  position: absolute;
  right: 0;
  bottom: 15px;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  background: rgba(124, 194, 237, 0.18);
  filter: blur(12px);
}

.floating-card {
  position: absolute;
  z-index: 3;
  display: flex;
  min-width: 176px;
  align-items: center;
  gap: 11px;
  padding: 13px 15px;
  border: 1px solid rgba(255, 255, 255, 0.88);
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 14px 40px rgba(15, 76, 129, 0.15);
  backdrop-filter: blur(14px);
}

.floating-card-top {
  top: 175px;
  right: -12px;
}

.floating-card-bottom {
  bottom: 100px;
  left: 4px;
}

.floating-card span:last-child {
  display: flex;
  flex-direction: column;
  font-size: 13px;
}

.floating-card small {
  color: var(--muted);
  font-size: 11px;
}

.floating-icon {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  color: white;
  background: var(--blue-bright);
  border-radius: 10px;
  font-weight: 800;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(1px);
}

.hero-glow-one {
  top: 60px;
  right: 7%;
  width: 140px;
  height: 140px;
  background: rgba(255, 255, 255, 0.55);
}

.hero-glow-two {
  right: 38%;
  bottom: 55px;
  width: 80px;
  height: 80px;
  background: rgba(139, 205, 245, 0.14);
}

.trust-strip {
  border-block: 1px solid var(--line);
  background: white;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.trust-grid p {
  display: grid;
  margin: 0;
  padding: 25px 36px;
  grid-template-columns: auto 1fr;
  column-gap: 13px;
  color: var(--muted);
  font-size: 12px;
}

.trust-grid p + p {
  border-left: 1px solid var(--line);
}

.trust-grid span {
  grid-row: span 2;
  color: var(--blue-bright);
  font-size: 12px;
  font-weight: 850;
}

.trust-grid b {
  color: var(--ink);
  font-size: 14px;
}

.section {
  padding-block: 120px;
}

.section-heading {
  max-width: 680px;
  margin: 0 auto 72px;
  text-align: center;
}

.section-heading h2,
.privacy-copy h2,
.final-cta h2 {
  margin: 0;
  font-size: clamp(34px, 4vw, 50px);
  line-height: 1.24;
  letter-spacing: -0.055em;
}

.section-heading > p:last-child {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 16px;
}

.feature-row {
  display: grid;
  min-height: 610px;
  grid-template-columns: 0.85fr 1.15fr;
  align-items: center;
  gap: 80px;
  padding-block: 74px;
  border-top: 1px solid var(--line);
}

.feature-row-reverse {
  grid-template-columns: 1.15fr 0.85fr;
}

.feature-row-reverse .feature-copy {
  order: 2;
}

.feature-row-reverse .feature-gallery {
  order: 1;
}

.feature-number {
  display: grid;
  width: 42px;
  height: 42px;
  margin-bottom: 22px;
  place-items: center;
  color: var(--blue);
  background: var(--blue-soft);
  border-radius: 13px;
  font-size: 13px;
  font-weight: 850;
}

.feature-copy h3 {
  margin: 0;
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.26;
  letter-spacing: -0.045em;
}

.feature-copy > p {
  margin: 21px 0;
  color: var(--muted);
  font-size: 16px;
}

.feature-copy ul {
  display: grid;
  margin: 0;
  padding: 0;
  gap: 10px;
  list-style: none;
}

.feature-copy li {
  position: relative;
  padding-left: 25px;
  color: #334155;
  font-size: 14px;
  font-weight: 650;
}

.feature-copy li::before {
  position: absolute;
  top: 2px;
  left: 0;
  color: var(--blue-bright);
  content: "✓";
  font-weight: 900;
}

.feature-gallery {
  display: flex;
  min-height: 520px;
  align-items: flex-end;
  justify-content: center;
  gap: 18px;
  padding: 45px 38px 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 35%, rgba(255, 255, 255, 0.95), transparent 40%),
    var(--blue-soft);
  border-radius: 35px;
}

.feature-gallery img {
  width: min(47%, 260px);
  border: 6px solid white;
  border-radius: 28px 28px 0 0;
  box-shadow: 0 18px 44px rgba(15, 76, 129, 0.17);
  transform: translateY(55px);
}

.feature-gallery img:nth-child(2) {
  transform: translateY(5px);
}

.feature-gallery-single img {
  width: min(64%, 325px);
  transform: translateY(45px);
}

.how-section {
  padding-block: 115px;
  background: var(--background);
}

.how-section .section-heading {
  margin-bottom: 55px;
}

.steps {
  display: grid;
  margin: 0;
  padding: 0;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  list-style: none;
}

.steps li {
  padding: 34px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 24px;
}

.step-icon {
  display: grid;
  width: 48px;
  height: 48px;
  margin-bottom: 34px;
  place-items: center;
  color: white;
  background: var(--blue);
  border-radius: 15px;
  font-size: 13px;
  font-weight: 850;
}

.steps h3 {
  margin: 0 0 10px;
  font-size: 20px;
  letter-spacing: -0.025em;
}

.steps p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.privacy-section {
  padding-block: 120px;
}

.privacy-card {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 80px;
  padding: 70px;
  color: white;
  background:
    radial-gradient(circle at 100% 0%, rgba(77, 159, 214, 0.42), transparent 36%),
    #0c3d67;
  border-radius: 36px;
  box-shadow: 0 28px 70px rgba(12, 61, 103, 0.2);
}

.privacy-copy .eyebrow {
  color: #89caf3;
}

.privacy-copy > p:not(.eyebrow) {
  max-width: 570px;
  margin: 25px 0;
  color: #d9e8f4;
}

.privacy-copy > a {
  display: inline-block;
  color: white;
  border-bottom: 1px solid rgba(255, 255, 255, 0.45);
  font-size: 14px;
  font-weight: 750;
}

.privacy-points {
  display: grid;
  align-content: center;
  gap: 13px;
}

.privacy-points p {
  display: grid;
  margin: 0;
  padding: 17px 18px;
  grid-template-columns: auto 1fr;
  column-gap: 13px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
}

.privacy-points p > span {
  grid-row: span 2;
  color: #85d1ff;
  font-weight: 900;
}

.privacy-points b {
  font-size: 14px;
}

.privacy-points small {
  color: #c6d9e8;
}

.faq-list {
  width: min(820px, 100%);
  margin-inline: auto;
  border-top: 1px solid var(--line);
}

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  position: relative;
  padding: 24px 48px 24px 4px;
  cursor: pointer;
  font-size: 17px;
  font-weight: 750;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  position: absolute;
  top: 22px;
  right: 8px;
  color: var(--blue);
  content: "+";
  font-size: 24px;
  line-height: 1;
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-list details p {
  margin: -5px 0 23px;
  padding-right: 60px;
  color: var(--muted);
  font-size: 14px;
}

.faq-list details p a {
  color: var(--blue);
  font-weight: 700;
  text-decoration: underline;
}

.final-cta {
  padding-block: 86px;
  background: var(--blue-soft);
}

.final-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.final-cta .eyebrow {
  margin-bottom: 13px;
}

.final-cta h2 {
  font-size: clamp(35px, 4.2vw, 54px);
}

.final-cta p:last-child {
  margin: 18px 0 0;
  color: var(--muted);
}

.cta-download {
  display: inline-flex;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 0 24px;
  color: white;
  background: var(--blue);
  border-radius: 14px;
  box-shadow: 0 12px 28px rgba(15, 76, 129, 0.2);
  font-size: 14px;
  font-weight: 800;
}

.cta-download span {
  font-size: 20px;
}

footer {
  padding-block: 65px 25px;
  color: #9aabc0;
  background: #0b1625;
}

.footer-grid {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 40px;
}

footer .brand {
  color: white;
}

.footer-brand > p {
  margin: 12px 0 0;
  font-size: 12px;
}

.footer-brand a {
  color: #d1dfeb;
}

footer nav {
  display: grid;
  grid-template-columns: repeat(2, auto);
  gap: 12px 36px;
  color: #d1dfeb;
  font-size: 13px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 50px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 11px;
}

.footer-bottom p {
  margin: 0;
}

.trademark-notice {
  max-width: 620px;
  margin-top: 7px !important;
  color: #708297;
  line-height: 1.5;
}

@media (max-width: 900px) {
  .site-header nav {
    display: none;
  }

  .nav-download {
    margin-left: auto;
  }

  .hero,
  .hero-grid {
    min-height: auto;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .hero-copy {
    padding: 76px 0 30px;
    text-align: center;
  }

  .store-actions {
    justify-content: center;
  }

  .hero-visual {
    height: 610px;
  }

  .hero-phone {
    right: 50%;
    width: 345px;
    transform: translateX(50%);
  }

  .phone-shadow {
    right: 50%;
    transform: translateX(50%);
  }

  .floating-card-top {
    right: calc(50% - 245px);
  }

  .floating-card-bottom {
    left: calc(50% - 245px);
  }

  .feature-row,
  .feature-row-reverse {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .feature-row-reverse .feature-copy,
  .feature-row-reverse .feature-gallery {
    order: initial;
  }

  .privacy-card {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

@media (max-width: 640px) {
  .shell,
  .nav-shell {
    width: min(100% - 32px, 1160px);
  }

  .nav-shell {
    min-height: 64px;
  }

  .brand-logo {
    width: 94px;
  }

  .nav-download {
    padding: 8px 14px;
    font-size: 12px;
  }

  .download-dialog {
    width: calc(100% - 28px);
  }

  .download-dialog-card {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 48px 24px 30px;
    text-align: center;
  }

  .dialog-copy h2 {
    font-size: 29px;
  }

  .hero-copy {
    padding-top: 62px;
  }

  .hero h1 {
    font-size: clamp(37px, 11vw, 49px);
  }

  .hero-description {
    font-size: 15px;
  }

  .desktop-break {
    display: none;
  }

  .store-actions {
    flex-direction: column;
  }

  .store-badge-link,
  .store-badge-pending {
    width: 187px;
    height: 62px;
    margin-inline: auto;
  }

  .play-store-mark {
    width: 27px;
    height: 30px;
  }

  .hero-visual {
    height: 530px;
  }

  .hero-phone {
    bottom: -155px;
    width: min(300px, 83vw);
  }

  .phone-shadow {
    width: 370px;
    height: 370px;
  }

  .floating-card {
    min-width: 155px;
    padding: 10px 12px;
  }

  .floating-card-top {
    top: 115px;
    right: -10px;
  }

  .floating-card-bottom {
    bottom: 75px;
    left: -9px;
  }

  .trust-grid {
    grid-template-columns: 1fr;
    padding-block: 4px;
  }

  .trust-grid p {
    padding: 18px 8px;
  }

  .trust-grid p + p {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .section {
    padding-block: 85px;
  }

  .section-heading {
    margin-bottom: 50px;
  }

  .section-heading h2,
  .privacy-copy h2,
  .final-cta h2 {
    font-size: 34px;
  }

  .feature-row {
    gap: 32px;
    padding-block: 58px;
  }

  .feature-gallery {
    min-height: 405px;
    gap: 8px;
    padding: 35px 14px 0;
    border-radius: 25px;
  }

  .feature-gallery img {
    width: 49%;
    border-width: 4px;
    border-radius: 21px 21px 0 0;
  }

  .feature-gallery-single img {
    width: 70%;
  }

  .how-section {
    padding-block: 85px;
  }

  .steps {
    grid-template-columns: 1fr;
  }

  .steps li {
    padding: 27px;
  }

  .step-icon {
    margin-bottom: 22px;
  }

  .privacy-section {
    padding-block: 85px;
  }

  .privacy-card {
    gap: 38px;
    padding: 38px 24px;
    border-radius: 27px;
  }

  .faq-list summary {
    font-size: 15px;
  }

  .faq-list details p {
    padding-right: 15px;
  }

  .final-cta {
    padding-block: 68px;
  }

  .final-cta-inner {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }

  .footer-grid,
  .footer-bottom {
    flex-direction: column;
  }

  footer nav {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    align-items: flex-start;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}