:root {
  --pink: #ff73c7;
  --pink-deep: #f254b2;
  --cream: #fff7f1;
  --black: #050505;
  --white: #ffffff;
  --gray: #625c60;
  --line: #171717;
  --yellow: #ffe15a;
  --content: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  scroll-behavior: smooth;
}

body {
  min-height: 100%;
  margin: 0;
  color: var(--black);
  background: var(--cream);
  font-family: Arial, "Helvetica Neue", Helvetica, Pretendard, sans-serif;
  line-height: 1.65;
  word-break: keep-all;
}

a {
  color: inherit;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

a:hover {
  text-decoration-thickness: 2px;
}

a:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 4px;
}

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

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  color: var(--white);
  background: var(--black);
  transform: translateY(-180%);
}

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

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

.micro {
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 9px 18px;
  border: 1.5px solid currentColor;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 900;
  line-height: 1;
  text-decoration: none;
}

.pill-dark {
  color: var(--black);
}

.pill-pink {
  color: var(--pink);
}

.masthead {
  color: var(--pink);
  border-bottom: 2px solid var(--pink);
  background: var(--black);
}

.masthead-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 62px;
}

.brand-link {
  font-size: 14px;
  font-weight: 900;
  text-decoration: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  min-height: 610px;
  border-bottom: 2px solid var(--black);
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 64px;
  min-width: 0;
  padding: 58px max(54px, calc((100vw - var(--content)) / 2));
  background: var(--pink);
}

.hero h1 {
  max-width: 900px;
  margin-bottom: 0;
  font-size: clamp(68px, 9vw, 142px);
  font-weight: 500;
  letter-spacing: -0.065em;
  line-height: 0.82;
}

.hero h1 span {
  display: block;
}

.hero-lead {
  max-width: 680px;
  margin: 0;
  font-size: clamp(18px, 2vw, 26px);
  font-weight: 700;
  line-height: 1.35;
}

.hero-side {
  display: grid;
  grid-template-rows: 1fr auto;
  color: var(--pink);
  background: var(--black);
}

.hero-mark {
  display: flex;
  align-items: flex-end;
  padding: 42px;
  font-size: clamp(90px, 12vw, 180px);
  font-weight: 500;
  letter-spacing: -0.08em;
  line-height: 0.75;
}

.hero-meta {
  padding: 34px 42px;
  border-top: 2px solid var(--pink);
}

.hero-meta p {
  margin-bottom: 6px;
  color: var(--white);
  font-size: 14px;
}

.hero-meta strong {
  font-size: 18px;
}

.section-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 2px solid var(--black);
  background: rgba(255, 247, 241, 0.96);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}

.section-nav-inner {
  display: flex;
  gap: 7px;
  padding: 10px 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.section-nav-inner::-webkit-scrollbar {
  display: none;
}

.section-nav a {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  min-height: 42px;
  padding: 9px 13px;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 900;
  text-decoration: none;
}

.section-nav a:hover,
.section-nav a:focus-visible {
  color: var(--pink);
  border-color: var(--black);
  background: var(--black);
}

.band {
  border-bottom: 2px solid var(--black);
}

.band-cream {
  background: var(--cream);
}

.band-white {
  background: var(--white);
}

.band-pink {
  background: var(--pink);
}

.band-black {
  color: var(--pink);
  border-bottom-color: var(--pink);
  background: var(--black);
}

.section {
  padding: 92px 0;
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(190px, 0.34fr) minmax(0, 1fr);
  gap: 64px;
}

.section-kicker {
  position: sticky;
  top: 82px;
  align-self: start;
  margin: 0;
  font-size: 13px;
  font-weight: 900;
}

.section-title {
  max-width: 880px;
  margin-bottom: 28px;
  font-size: clamp(42px, 6vw, 76px);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 0.96;
}

.section-lead {
  max-width: 790px;
  margin-bottom: 38px;
  font-size: 19px;
  font-weight: 700;
}

.prose {
  max-width: 820px;
}

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

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.card {
  min-width: 0;
  padding: 28px;
  border: 2px solid var(--black);
  background: var(--cream);
}

.card-black {
  color: var(--pink);
  background: var(--black);
}

.card-white {
  background: var(--white);
}

.card-number {
  display: block;
  margin-bottom: 42px;
  font-size: 44px;
  font-weight: 500;
  letter-spacing: -0.06em;
  line-height: 1;
}

.card h3 {
  margin-bottom: 12px;
  font-size: 21px;
  line-height: 1.25;
}

.card p,
.card li {
  font-size: 15px;
}

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

.clean-list {
  margin: 0;
  padding-left: 1.25em;
}

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

.flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 38px;
  border: 2px solid var(--pink);
}

.flow-step {
  min-height: 190px;
  padding: 24px;
}

.flow-step + .flow-step {
  border-left: 2px solid var(--pink);
}

.flow-step b {
  display: block;
  margin-bottom: 38px;
  font-size: 13px;
}

.flow-step strong {
  display: block;
  margin-bottom: 9px;
  color: var(--white);
  font-size: 19px;
}

.flow-step p {
  margin: 0;
  font-size: 14px;
}

.retention {
  margin-top: 36px;
  border-top: 2px solid var(--black);
}

.retention-row {
  display: grid;
  grid-template-columns: 170px minmax(180px, 0.55fr) minmax(0, 1fr);
  gap: 28px;
  padding: 24px 0;
  border-bottom: 2px solid var(--black);
}

.retention-row strong {
  font-size: 17px;
}

.retention-row b {
  font-size: 25px;
  letter-spacing: -0.035em;
}

.retention-row p {
  margin: 0;
}

.notice {
  margin-top: 34px;
  padding: 26px 28px;
  color: var(--pink);
  border: 2px solid var(--pink);
  background: var(--black);
}

.notice strong {
  display: block;
  margin-bottom: 7px;
  color: var(--white);
  font-size: 18px;
}

.notice p {
  margin: 0;
}

.action-box {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  margin-top: 36px;
  padding: 30px;
  border: 2px solid var(--black);
  background: var(--white);
}

.action-box h3 {
  margin-bottom: 6px;
  font-size: 23px;
}

.action-box p {
  margin: 0;
}

.action-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 58px;
  padding: 15px 22px;
  color: var(--pink);
  border: 2px solid var(--black);
  background: var(--black);
  font-size: 15px;
  font-weight: 900;
  text-decoration: none;
}

.fine-print {
  color: var(--gray);
  font-size: 13px;
}

.footer {
  color: var(--pink);
  background: var(--black);
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 42px;
  align-items: end;
  padding: 64px 0;
}

.footer h2 {
  max-width: 760px;
  margin: 18px 0 12px;
  font-size: clamp(44px, 6vw, 82px);
  font-weight: 500;
  letter-spacing: -0.05em;
  line-height: 0.9;
}

.footer p {
  max-width: 690px;
  margin-bottom: 0;
  color: var(--white);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  justify-content: flex-end;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero-side {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
  }

  .hero-mark {
    min-height: 200px;
  }

  .hero-meta {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    border-top: 0;
    border-left: 2px solid var(--pink);
  }

  .section-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .section-kicker {
    position: static;
  }

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

  .flow-step:nth-child(3) {
    border-left: 0;
    border-top: 2px solid var(--pink);
  }

  .flow-step:nth-child(4) {
    border-top: 2px solid var(--pink);
  }

  .retention-row {
    grid-template-columns: 120px minmax(150px, 0.45fr) minmax(0, 1fr);
  }
}

@media (max-width: 620px) {
  .wrap {
    width: min(100% - 32px, var(--content));
  }

  .masthead-inner {
    min-height: 56px;
  }

  .masthead .micro {
    display: none;
  }

  .hero {
    min-height: 0;
  }

  .hero-copy {
    gap: 48px;
    min-height: 470px;
    padding: 38px 20px 42px;
  }

  .hero h1 {
    font-size: clamp(58px, 20vw, 86px);
  }

  .hero-side {
    grid-template-columns: 0.85fr 1.15fr;
  }

  .hero-mark {
    min-height: 156px;
    padding: 24px 20px;
    font-size: 86px;
  }

  .hero-meta {
    padding: 24px 20px;
  }

  .section {
    padding: 66px 0;
  }

  .section-title {
    font-size: 44px;
  }

  .section-lead {
    font-size: 17px;
  }

  .card-grid,
  .flow,
  .action-box,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .card {
    padding: 24px 20px;
  }

  .card-number {
    margin-bottom: 30px;
  }

  .flow-step {
    min-height: 0;
  }

  .flow-step + .flow-step,
  .flow-step:nth-child(3),
  .flow-step:nth-child(4) {
    border-top: 2px solid var(--pink);
    border-left: 0;
  }

  .flow-step b {
    margin-bottom: 24px;
  }

  .retention-row {
    grid-template-columns: 1fr;
    gap: 7px;
  }

  .retention-row b {
    font-size: 22px;
  }

  .action-link {
    width: 100%;
  }

  .footer-inner {
    align-items: start;
  }

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

@media print {
  .section-nav,
  .skip-link {
    display: none;
  }

  .hero {
    min-height: 0;
  }

  .hero-copy {
    padding: 32px;
  }

  .section {
    padding: 34px 0;
  }

  .section-kicker {
    position: static;
  }

  a {
    text-decoration: none;
  }
}