:root {
  color-scheme: light;
  --ink: #252b2a;
  --muted: #68716d;
  --line: #e7eae8;
  --paper: #ffffff;
  --surface: #f3f5f4;
  --brand: #252b2a;
  --brand-strong: #171b1a;
  --accent: #5f7ae5;
  --accent-light: #a8b7ff;
  --accent-soft: #eef1fc;
  --warm: #d5ad35;
  --danger: #b94a48;
  --page-width: 1120px;
  --content-width: 760px;
  --shadow: 0 24px 64px rgba(37, 43, 42, 0.12);
  --device: #252b2a;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family:
    -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Pretendard",
    "Noto Sans KR", "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: 0;
  word-break: keep-all;
}

[lang="en"] body,
[lang="ja"] body {
  word-break: normal;
}

a {
  color: inherit;
  text-underline-offset: 3px;
}

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

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

.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.site-header__inner {
  width: min(calc(100% - 40px), var(--page-width));
  min-height: 68px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 750;
  text-decoration: none;
}

.brand-link img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav a {
  min-height: 44px;
  padding: 10px 12px;
  border-radius: 6px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a[aria-current="page"] {
  color: var(--accent);
  background: var(--accent-soft);
  outline: none;
}

.site-nav .language-link {
  margin-left: 6px;
  color: var(--accent);
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 750;
  line-height: 1.4;
  text-align: center;
  text-decoration: none;
}

.button[aria-disabled="true"] {
  cursor: default;
}

.button--light {
  color: var(--brand-strong);
  background: #ffffff;
}

.button--brand {
  color: #ffffff;
  background: var(--brand);
}

.hero {
  min-height: 720px;
  overflow: visible;
  color: #ffffff;
  background: var(--brand);
}

.hero__inner {
  position: relative;
  width: min(calc(100% - 40px), var(--page-width));
  min-height: 720px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 340px);
  align-items: center;
  gap: 72px;
  padding: 52px 0 0;
}

.hero__copy {
  position: relative;
  z-index: 2;
  width: auto;
  padding: 32px 0 84px;
}

.hero__brand {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
}

.hero__brand img {
  width: 80px;
  height: 80px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 18px;
  box-shadow: 0 12px 30px rgba(3, 27, 24, 0.28);
}

.hero__brand strong {
  display: block;
  font-size: 29px;
  line-height: 1.2;
}

.hero__brand span {
  display: block;
  margin-top: 5px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 14px;
}

.hero h1 {
  max-width: 560px;
  margin: 0;
  font-size: 52px;
  line-height: 1.18;
  letter-spacing: 0;
}

.hero__lede {
  max-width: 520px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 19px;
  line-height: 1.7;
}

.hero__trust {
  max-width: 520px;
  margin: 18px 0 0;
  color: var(--accent-light);
  font-size: 15px;
  font-weight: 680;
}

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

.hero__visual {
  position: relative;
  align-self: center;
  width: min(100%, 300px);
  aspect-ratio: auto;
  justify-self: end;
  --mockup-canvas: #ffffff;
  padding: 26px 0 0;
  overflow: hidden;
  background: var(--mockup-canvas);
  border: 7px solid var(--device);
  border-radius: 42px;
  box-shadow: 0 32px 72px rgba(2, 24, 21, 0.38);
}

.hero__visual img {
  width: 100%;
  height: auto;
  object-position: top;
  border-radius: 0 0 28px 28px;
}

.section {
  padding: 88px 0;
}

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

.section--brand {
  color: #ffffff;
  background: var(--brand-strong);
}

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

.section__eyebrow {
  margin: 0 0 10px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 800;
}

.section--brand .section__eyebrow {
  color: var(--accent-light);
}

.section h2 {
  max-width: 720px;
  margin: 0;
  font-size: 36px;
  line-height: 1.3;
  letter-spacing: 0;
}

.section__intro {
  max-width: 720px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.section__inner--narrow {
  max-width: 820px;
}

.section--brand .section__intro {
  color: rgba(255, 255, 255, 0.72);
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: start;
  gap: 48px;
  margin-top: 54px;
}

.workflow-step {
  display: grid;
  min-width: 0;
  grid-template-rows: 30px 72px 104px auto;
}

.phone-shot {
  width: min(100%, 284px);
  aspect-ratio: auto;
  margin: 48px auto 24px;
  --mockup-canvas: #ffffff;
  padding: 26px 0 0;
  overflow: hidden;
  background: var(--mockup-canvas);
  border: 7px solid var(--device);
  border-radius: 38px;
  box-shadow: var(--shadow);
}

.phone-shot img {
  width: 100%;
  height: auto;
  object-position: top;
  border-radius: 0 0 26px 26px;
}

.phone-shot--dimmed {
  --mockup-canvas: #9b9e9d;
}

.workflow-step__number {
  display: flex;
  width: 30px;
  height: 30px;
  align-items: center;
  justify-content: center;
  margin: 0;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 50%;
  font-size: 13px;
  font-weight: 800;
}

.workflow-step h3 {
  align-self: start;
  margin: 16px 0 0;
  font-size: 20px;
  line-height: 1.4;
}

.workflow-step p {
  align-self: start;
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.65;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 44px;
}

.feature {
  min-height: 210px;
  padding: 28px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.feature__number {
  display: flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 50%;
  font-size: 14px;
  font-weight: 800;
}

.feature h3 {
  margin: 0;
  font-size: 20px;
}

.feature p {
  margin: 10px 0 0;
  color: var(--muted);
}

.privacy-principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 44px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
}

.privacy-principle {
  min-height: 180px;
  padding: 28px;
  background: var(--brand-strong);
}

.privacy-principle strong {
  display: block;
  color: var(--accent-light);
  font-size: 19px;
}

.privacy-principle p {
  margin: 10px 0 0;
  color: rgba(255, 255, 255, 0.72);
}

.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.text-link {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border: 1px solid currentColor;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 750;
  text-decoration: none;
}

.section--brand .text-link {
  color: #ffffff;
}

.text-link:hover,
.text-link:focus-visible {
  color: var(--brand-strong);
  background: var(--accent-light);
  border-color: var(--accent-light);
  outline: none;
}

.plan-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 44px;
}

.plan {
  padding: 30px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.plan--premium {
  border-color: var(--accent);
  box-shadow: 0 16px 38px rgba(95, 122, 229, 0.12);
}

.plan__label {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
}

.plan h3 {
  margin: 0;
  font-size: 23px;
}

.plan ul {
  margin: 22px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

.plan li + li {
  margin-top: 8px;
}

.plan__note {
  margin: 22px 0 0;
  padding-top: 18px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 13px;
}

.faq-list {
  margin-top: 34px;
  border-top: 1px solid var(--line);
}

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

.faq-list summary {
  position: relative;
  padding: 22px 42px 22px 0;
  cursor: pointer;
  font-size: 18px;
  font-weight: 720;
  list-style: none;
}

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

.faq-list summary::after {
  position: absolute;
  top: 21px;
  right: 4px;
  color: var(--accent);
  content: "+";
  font-size: 24px;
  font-weight: 500;
  line-height: 1;
}

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

.faq-list details p {
  max-width: 720px;
  margin: -4px 0 22px;
  color: var(--muted);
}

.final-cta {
  padding: 72px 0;
  background: var(--accent-soft);
}

.final-cta__inner {
  width: min(calc(100% - 40px), var(--page-width));
  margin: 0 auto;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
}

.final-cta h2 {
  margin: 0;
  font-size: 34px;
  line-height: 1.35;
}

.final-cta__actions {
  flex: 0 0 auto;
}

.page-hero {
  padding: 72px 0 58px;
  color: #ffffff;
  background: var(--brand);
}

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

.page-hero p {
  margin: 0 0 10px;
  color: var(--accent-light);
  font-size: 14px;
  font-weight: 750;
}

.page-hero h1 {
  margin: 0;
  font-size: 42px;
  line-height: 1.25;
}

.page-hero__lede {
  max-width: 650px;
  margin: 16px 0 0;
  color: rgba(255, 255, 255, 0.75);
  font-size: 17px;
}

.document {
  width: min(calc(100% - 40px), var(--content-width));
  margin: 0 auto;
  padding: 64px 0 100px;
}

.document__meta {
  margin: 0 0 42px;
  padding: 18px 20px;
  color: var(--muted);
  background: var(--surface);
  border-left: 4px solid var(--accent);
  border-radius: 0 6px 6px 0;
}

.document h2 {
  margin: 56px 0 14px;
  padding-top: 4px;
  font-size: 25px;
  line-height: 1.4;
}

.document h2:first-of-type {
  margin-top: 0;
}

.document h3 {
  margin: 28px 0 10px;
  font-size: 18px;
}

.document p,
.document li {
  color: #4c5552;
}

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

.document li + li {
  margin-top: 8px;
}

.document table {
  width: 100%;
  margin: 22px 0;
  border-collapse: collapse;
  font-size: 14px;
}

.document th,
.document td {
  padding: 14px 12px;
  vertical-align: top;
  border: 1px solid var(--line);
  text-align: left;
}

.document th {
  background: var(--surface);
}

.contact-panel {
  margin-top: 42px;
  padding: 26px;
  background: var(--accent-soft);
  border: 1px solid #dce2fa;
  border-radius: 8px;
}

.contact-panel h2 {
  margin: 0 0 12px;
  padding: 0;
}

.contact-panel p {
  margin: 6px 0;
}

.support-list {
  display: grid;
  gap: 0;
  margin-top: 16px;
  border-top: 1px solid var(--line);
}

.support-item {
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.support-item h2 {
  margin: 0 0 8px;
  padding: 0;
  font-size: 20px;
}

.support-item p {
  margin: 0;
}

.site-footer {
  padding: 34px 0 40px;
  color: var(--muted);
  background: #f7f8f8;
  border-top: 1px solid var(--line);
}

.site-footer__inner {
  width: min(calc(100% - 40px), var(--page-width));
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 28px;
}

.business-disclosure {
  max-width: 760px;
}

.business-disclosure__details {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  margin-top: 8px;
}

.business-disclosure__details span {
  position: relative;
  font-size: 13px;
}

.business-disclosure__details span:not(:last-child)::after {
  position: absolute;
  right: -8px;
  color: #aab4b0;
  content: "·";
}

.business-disclosure a {
  color: var(--brand);
}

.site-footer strong {
  display: block;
  color: var(--ink);
}

.site-footer p {
  margin: 4px 0 0;
  font-size: 13px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px;
  font-size: 13px;
}

@media (max-width: 820px) {
  .site-header__inner {
    min-height: 62px;
  }

  .site-nav a {
    padding: 9px 8px;
    font-size: 13px;
  }

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

  .hero__inner {
    grid-template-columns: 1fr;
    gap: 26px;
    padding-top: 46px;
  }

  .hero__copy {
    width: 100%;
    padding: 0;
  }

  .hero h1 {
    max-width: 480px;
    font-size: 38px;
  }

  .hero__lede {
    max-width: 470px;
    font-size: 17px;
  }

  .hero__visual {
    width: min(72vw, 292px);
    height: auto;
    aspect-ratio: auto;
    justify-self: center;
    margin-bottom: 46px;
    padding: 26px 0 0;
    border-radius: 38px;
  }

  .hero__visual img {
    border-radius: 0 0 26px 26px;
  }

  .section {
    padding: 68px 0;
  }

  .section h2 {
    font-size: 30px;
  }

  .feature-grid,
  .privacy-principles,
  .plan-grid {
    grid-template-columns: 1fr;
  }

  .workflow-grid {
    width: 100%;
    grid-template-columns: 1fr;
    gap: 76px;
    overflow: visible;
    padding: 0;
  }

  .workflow-step {
    display: block;
    width: 100%;
    max-width: none;
  }

  .phone-shot {
    width: min(76vw, 300px);
    margin-top: 34px;
  }

  .feature {
    min-height: auto;
  }

  .privacy-principle {
    min-height: auto;
  }

  .page-hero {
    padding: 54px 0 44px;
  }

  .page-hero h1 {
    font-size: 34px;
  }

  .final-cta__inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .final-cta__actions {
    width: 100%;
    max-width: 320px;
    flex-basis: auto;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 15px;
    word-break: normal;
  }

  .site-header__inner,
  .section__inner,
  .hero__inner,
  .final-cta__inner,
  .site-footer__inner {
    width: min(calc(100% - 28px), var(--page-width));
  }

  .page-hero__inner,
  .document {
    width: min(calc(100% - 32px), var(--content-width));
  }

  .brand-link span {
    display: none;
  }

  .site-nav {
    gap: 0;
  }

  .site-nav__optional {
    display: none;
  }

  .site-nav a {
    min-height: 42px;
    padding: 9px 5px;
    font-size: 12px;
  }

  .site-nav .language-link {
    margin-left: 2px;
  }

  .hero__brand {
    margin-bottom: 22px;
  }

  .hero__brand img {
    width: 64px;
    height: 64px;
    border-radius: 14px;
  }

  .hero__brand strong {
    font-size: 24px;
  }

  .hero h1 {
    font-size: 34px;
  }

  .hero__lede {
    font-size: 16px;
  }

  .hero__trust {
    font-size: 14px;
  }

  .hero__actions {
    display: grid;
    grid-template-columns: 1fr;
    width: min(100%, 300px);
  }

  .button {
    width: 100%;
    padding-right: 12px;
    padding-left: 12px;
    overflow-wrap: anywhere;
  }

  .hero__visual {
    width: min(76vw, 292px);
    margin-right: auto;
    margin-left: auto;
    border-radius: 36px;
  }

  .hero__visual img {
    border-radius: 0 0 24px 24px;
  }

  .phone-shot {
    width: min(64vw, 248px);
    margin-top: 28px;
  }

  .section h2 {
    font-size: 27px;
  }

  .section__intro {
    font-size: 16px;
  }

  .workflow-grid {
    margin-top: 42px;
  }

  .workflow-step h3 {
    font-size: 19px;
  }

  .plan {
    padding: 24px;
  }

  .faq-list summary {
    font-size: 16px;
  }

  .final-cta {
    padding: 56px 0;
  }

  .final-cta h2 {
    font-size: 26px;
  }

  .feature {
    padding: 24px;
  }

  .document {
    padding-top: 48px;
  }

  .document table,
  .document thead,
  .document tbody,
  .document tr,
  .document th,
  .document td {
    display: block;
  }

  .document th {
    border-bottom: 0;
  }

  .document tr + tr {
    margin-top: 12px;
  }

  .site-footer__inner {
    flex-direction: column;
  }

  .business-disclosure__details {
    display: grid;
    gap: 4px;
  }

  .business-disclosure__details span::after {
    display: none;
  }

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

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