:root {
  --ink: #151515;
  --sub: #5f5f5f;
  --pink: #ff2f5f;
  --pink-soft: #fff3f6;
  --gray: #f3f3f3;
  --line: #151515;
  --dot: rgba(20, 20, 20, 0.16);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  min-height: 100vh;
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle, var(--dot) 1.4px, transparent 1.7px) 0 0 / 82px 82px,
    #fff;
  border-top: 6px solid var(--pink);
  -webkit-font-smoothing: antialiased;
}

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

.container {
  width: min(100%, 1110px);
  margin: 0 auto;
  padding: 0 28px;
}

header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
}

.nav {
  min-height: 86px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 24px;
  font-weight: 950;
  letter-spacing: -0.04em;
}

.brand img {
  width: 42px;
  height: 42px;
  filter: grayscale(1) contrast(1.25);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  font-size: 15px;
  font-weight: 900;
}

.nav-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 27px;
  border-radius: 9px;
  background: var(--pink);
  color: #fff;
  box-shadow: 0 8px 0 rgba(255, 47, 95, 0.16);
}

.hero {
  min-height: calc(100vh - 92px);
  display: flex;
  align-items: center;
  padding: 42px 0 90px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 70px;
}

.hero h1 {
  font-size: clamp(54px, 7.6vw, 92px);
  line-height: 1.12;
  font-weight: 950;
  letter-spacing: -0.07em;
}

.hero-copy p {
  max-width: 550px;
  margin-top: 34px;
  color: var(--sub);
  font-size: 20px;
  line-height: 1.95;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.hero-copy .button { margin-top: 34px; font-weight: 950; }

.hero-art {
  position: relative;
  min-height: 440px;
}

.tool-panel {
  position: absolute;
  left: 0;
  top: 82px;
  width: 365px;
  height: 275px;
  border: 3px solid var(--line);
  background: #fff;
}

.tool-rail {
  position: absolute;
  left: 0;
  top: 0;
  width: 72px;
  height: 100%;
  border-right: 3px solid var(--line);
  display: grid;
  place-content: center;
  gap: 28px;
}

.tool-rail span {
  width: 25px;
  height: 25px;
  border: 3px solid var(--line);
  border-radius: 50%;
}

.canvas-box {
  position: absolute;
  left: 104px;
  top: 62px;
  width: 190px;
  height: 125px;
  border-left: 3px solid var(--line);
  border-bottom: 3px solid var(--line);
}

.node {
  position: absolute;
  width: 19px;
  height: 19px;
  border-radius: 50%;
}

.node-red { left: -10px; top: -10px; background: var(--pink); }
.node-black { left: -10px; bottom: -10px; background: var(--ink); }
.node-gray { right: -10px; bottom: -10px; background: #d0d0d0; }
.line-one,
.line-two {
  position: absolute;
  left: 0;
  top: 0;
  width: 184px;
  height: 3px;
  background: var(--line);
  transform-origin: left center;
}
.line-one { transform: rotate(29deg); }
.line-two { transform: rotate(52deg); }

.pink-bar {
  position: absolute;
  left: 74px;
  bottom: 60px;
  width: 78px;
  height: 210px;
  border-radius: 8px;
  background: var(--pink);
  transform: rotate(16deg);
}

.hero-art > img {
  position: absolute;
  right: 20px;
  bottom: 38px;
  width: 245px;
  filter: grayscale(1) contrast(1.35) drop-shadow(0 12px 0 rgba(0, 0, 0, 0.08));
}

.floating-note {
  position: absolute;
  right: 4px;
  top: 54px;
  max-width: 260px;
  padding: 18px 22px;
  border: 3px solid var(--line);
  border-radius: 8px;
  background: #f0f0f0;
  font-weight: 950;
  transform: rotate(-12deg);
}

section { padding: 96px 0; }

.kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  font-size: 24px;
  font-weight: 950;
  letter-spacing: -0.02em;
}

.kicker::before {
  content: "";
  width: 14px;
  height: 14px;
  background: var(--pink);
  clip-path: polygon(50% 0, 66% 32%, 100% 50%, 66% 68%, 50% 100%, 34% 68%, 0 50%, 34% 32%);
}

.about h2,
.faq h2,
.notice h2 {
  max-width: 880px;
  font-size: clamp(34px, 4.6vw, 58px);
  line-height: 1.35;
  font-weight: 950;
  letter-spacing: -0.055em;
}

.lead {
  max-width: 720px;
  margin-top: 28px;
  color: var(--sub);
  font-size: 19px;
  line-height: 1.95;
  font-weight: 750;
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.step-card {
  min-height: 430px;
  padding: 30px;
  border: 2px dashed var(--line);
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.82);
}

.step-card img {
  display: block;
  width: 170px;
  height: 150px;
  margin: 0 auto 22px;
  object-fit: contain;
  filter: grayscale(1) contrast(1.2);
}

.step-no {
  margin-bottom: 14px;
  color: var(--pink);
  font-size: 20px;
  font-weight: 950;
}

.step-card h3 {
  margin-bottom: 14px;
  font-size: 29px;
  font-weight: 950;
  letter-spacing: -0.05em;
}

.step-card p:last-child {
  color: var(--sub);
  font-size: 17px;
  line-height: 1.75;
  font-weight: 750;
}

.faq .container { max-width: 960px; }
.faq h2 { margin-bottom: 54px; }

.qa { margin-top: 34px; }

.q-row,
.a-row {
  display: grid;
  align-items: center;
  gap: 26px;
}

.q-row {
  grid-template-columns: 94px 1fr;
}

.a-row {
  grid-template-columns: 1fr 94px;
  margin-top: 24px;
  margin-left: 116px;
}

.q-row img,
.a-row img {
  width: 94px;
  height: 94px;
  padding: 12px;
  border: 2px solid var(--line);
  border-radius: 50%;
  background: #fff;
  object-fit: contain;
  filter: grayscale(1) contrast(1.2);
}

.q-row div,
.a-row div {
  min-height: 78px;
  display: flex;
  align-items: center;
  padding: 22px 28px;
  border-radius: 8px;
  font-size: 20px;
  line-height: 1.7;
  font-weight: 900;
}

.q-row div { background: var(--gray); }
.a-row div { background: var(--pink-soft); }

.q-row span,
.a-row span {
  margin-right: 12px;
  color: var(--pink);
  font-size: 28px;
  font-weight: 950;
}

.notice-box {
  padding: 58px 64px;
  border: 2px dashed var(--line);
  border-radius: 34px;
  background: rgba(255, 255, 255, 0.9);
}

.notice-box p:last-child {
  max-width: 760px;
  margin-top: 24px;
  color: var(--sub);
  font-size: 18px;
  line-height: 1.9;
  font-weight: 750;
}

.page-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 22px;
  margin-top: 30px;
}

.text-link {
  color: var(--pink);
  font-weight: 950;
}

.page-main {
  padding-top: 72px;
  padding-bottom: 84px;
}

.page-title {
  margin-bottom: 18px;
  font-size: clamp(44px, 6vw, 76px);
  line-height: 1.1;
  font-weight: 950;
  letter-spacing: -0.06em;
}

.page-lead {
  max-width: 680px;
  margin-bottom: 42px;
  color: var(--sub);
  font-size: 19px;
  line-height: 1.8;
  font-weight: 800;
}

.article-card {
  max-width: 880px;
}

.article-card + .article-card {
  margin-top: 24px;
}

.article-card h2 {
  margin-bottom: 14px;
  font-size: 28px;
  line-height: 1.35;
  font-weight: 950;
  letter-spacing: -0.04em;
}

.article-card p + p,
.article-card ul {
  margin-top: 12px;
}

.article-meta {
  margin-bottom: 12px;
  color: var(--pink);
  font-size: 14px;
  font-weight: 950;
}

footer {
  padding: 36px 0;
  color: var(--sub);
  font-size: 14px;
  font-weight: 800;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid #ddd;
  padding-top: 28px;
}

.footer-inner div {
  display: flex;
  gap: 18px;
}

.section-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 30px;
  font-weight: 950;
}

.section-title .dot {
  width: 12px;
  height: 12px;
  background: var(--pink);
  border-radius: 50%;
}

.section-sub {
  margin-bottom: 24px;
  color: var(--sub);
  font-weight: 750;
}

.card {
  margin-bottom: 18px;
  padding: 24px 28px;
  border: 2px dashed var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.9);
}

.card h3 {
  margin-bottom: 10px;
  font-size: 20px;
  font-weight: 950;
}

.card p,
.card li {
  color: var(--sub);
  font-size: 16px;
  line-height: 1.8;
  font-weight: 700;
}

.card ul { margin-left: 20px; }

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

  .hero {
    padding-top: 24px;
  }

  .hero-art {
    min-height: 380px;
  }
}

@media (max-width: 640px) {
  body {
    background:
      radial-gradient(circle, var(--dot) 1.2px, transparent 1.5px) 0 0 / 48px 48px,
      #fff;
  }

  .container { padding: 0 20px; }

  .nav {
    min-height: 72px;
    align-items: flex-start;
    padding: 14px 0;
  }

  .brand span { display: none; }
  .brand img { width: 34px; height: 34px; }
  .nav-links { gap: 10px; font-size: 11px; flex-wrap: wrap; justify-content: flex-end; }
  .nav-cta { min-height: 34px; padding: 0 12px; border-radius: 7px; }

  .hero {
    min-height: auto;
    padding: 36px 0 62px;
  }

  .hero-grid { gap: 26px; }
  .hero h1 { font-size: 48px; }
  .hero-copy p { margin-top: 24px; font-size: 16px; line-height: 1.8; }
  .button { min-height: 46px; padding: 0 20px; }

  .hero-art { min-height: 270px; }
  .tool-panel { top: 42px; width: 235px; height: 178px; }
  .tool-rail { width: 48px; gap: 16px; }
  .tool-rail span { width: 17px; height: 17px; border-width: 2px; }
  .canvas-box { left: 68px; top: 42px; width: 122px; height: 82px; }
  .pink-bar { left: 46px; bottom: 44px; width: 48px; height: 138px; }
  .hero-art > img { width: 145px; right: 4px; bottom: 34px; }
  .floating-note { top: 14px; right: 0; max-width: 190px; padding: 12px 14px; font-size: 12px; }

  section { padding: 70px 0; }
  .kicker { font-size: 20px; }
  .about h2,
  .faq h2,
  .notice h2 { font-size: 33px; }
  .lead { font-size: 16px; }

  .step-card {
    min-height: 0;
    padding: 26px;
  }

  .step-card img {
    width: 140px;
    height: 120px;
  }

  .q-row {
    grid-template-columns: 58px 1fr;
    gap: 12px;
  }

  .a-row {
    grid-template-columns: 1fr 58px;
    gap: 12px;
    margin-left: 0;
  }

  .q-row img,
  .a-row img {
    width: 58px;
    height: 58px;
    padding: 8px;
  }

  .q-row div,
  .a-row div {
    padding: 16px;
    font-size: 15px;
  }

  .q-row span,
  .a-row span {
    font-size: 21px;
  }

  .notice-box { padding: 34px 24px; }
  .page-main { padding-top: 48px; padding-bottom: 64px; }
  .page-title { font-size: 42px; }
  .page-lead { margin-bottom: 30px; font-size: 16px; }
  .article-card h2 { font-size: 24px; }
  .page-actions { align-items: flex-start; flex-direction: column; gap: 16px; }
  .footer-inner { flex-direction: column; }
  .footer-inner div { flex-wrap: wrap; }
}