:root {
  --pink: #f257b8;
  --pink-deep: #d93498;
  --pink-soft: #ffe8f6;
  --green: #245c35;
  --green-soft: #e9f6df;
  --cream: #fffaf1;
  --ink: #2b2730;
  --muted: #6f6675;
  --white: #ffffff;
  --shadow: 0 24px 70px rgba(174, 73, 140, 0.18);
  --radius: 28px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 5%, rgba(255, 178, 222, 0.58), transparent 28rem),
    radial-gradient(circle at 90% 0%, rgba(223, 247, 194, 0.78), transparent 26rem),
    linear-gradient(180deg, #fff8fd 0%, #fffaf1 46%, #fff5fb 100%);
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "YuGothic", "Noto Sans JP", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.8;
}

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

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  top: -80px;
  left: 16px;
  z-index: 999;
  padding: 10px 14px;
  background: var(--green);
  color: var(--white);
  border-radius: 999px;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 16px;
}

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.narrow {
  width: min(820px, calc(100% - 40px));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: rgba(255, 248, 253, 0.82);
  border-bottom: 1px solid rgba(242, 87, 184, 0.16);
}

.header-inner,
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.header-inner {
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--green);
}

.brand-mark {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 10px 24px rgba(36, 92, 53, 0.2);
}

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

.nav a {
  padding: 8px 12px;
  text-decoration: none;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  border-radius: 999px;
}

.nav a:hover,
.nav a:focus-visible {
  background: var(--pink-soft);
  color: var(--pink-deep);
}

.section {
  padding: 88px 0;
}

.hero {
  padding: 76px 0 92px;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.78fr);
  align-items: center;
  gap: 64px;
}

.hero-copy {
  position: relative;
}

.hero-copy::before {
  content: "";
  position: absolute;
  left: -54px;
  top: -46px;
  width: 180px;
  height: 180px;
  background: var(--white);
  border-radius: 58% 42% 62% 38%;
  z-index: -1;
  opacity: 0.88;
}

.eyebrow,
.section-label,
.card-tag {
  margin: 0 0 14px;
  color: var(--pink-deep);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 22px;
  color: var(--green);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(44px, 7vw, 86px);
  line-height: 1.08;
  letter-spacing: 0.02em;
}

h2 {
  margin-bottom: 18px;
  color: var(--green);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.24;
}

h3 {
  margin-bottom: 12px;
  color: var(--green);
  font-size: 24px;
  line-height: 1.35;
}

.lead {
  max-width: 640px;
  color: #443b48;
  font-size: clamp(17px, 2vw, 21px);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 12px 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 900;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.button:hover,
.button:focus-visible,
.text-link:hover,
.text-link:focus-visible,
.link-card:hover,
.link-card:focus-visible {
  transform: translateY(-2px);
}

.button.primary {
  color: var(--white);
  background: linear-gradient(135deg, var(--pink), var(--pink-deep));
  box-shadow: 0 16px 34px rgba(217, 52, 152, 0.28);
}

.button.secondary {
  color: var(--green);
  background: var(--white);
  border: 1px solid rgba(36, 92, 53, 0.14);
  box-shadow: 0 12px 28px rgba(36, 92, 53, 0.08);
}

.poster-card {
  position: relative;
  padding: 16px;
  border-radius: 34px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.poster-card::after {
  content: "";
  position: absolute;
  right: -24px;
  bottom: -24px;
  width: 120px;
  height: 120px;
  border-radius: 36px;
  background: rgba(223, 247, 194, 0.9);
  z-index: -1;
  transform: rotate(12deg);
}

.poster-card img {
  width: 100%;
  border-radius: 22px;
  box-shadow: 0 12px 36px rgba(116, 48, 95, 0.16);
}

.intro-section .narrow,
.closing-box {
  padding: 44px;
  border: 1px solid rgba(242, 87, 184, 0.16);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.76);
  box-shadow: var(--shadow);
}

.intro-section p,
.project-section p,
.booth-section p,
.links-section p,
.closing-section p {
  color: var(--muted);
  font-size: 16px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 32px;
}

.cards,
.link-grid {
  display: grid;
  gap: 20px;
}

.cards {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card,
.link-card {
  border: 1px solid rgba(242, 87, 184, 0.14);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 18px 46px rgba(174, 73, 140, 0.1);
}

.card {
  padding: 30px;
}

.card-tag {
  display: inline-flex;
  margin-bottom: 16px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--pink-soft);
}

.text-link {
  display: inline-flex;
  align-items: center;
  margin-top: 10px;
  color: var(--pink-deep);
  font-weight: 900;
  text-decoration: none;
  transition: transform 0.2s ease;
}

.text-link::after {
  content: "→";
  margin-left: 6px;
}

.booth-section {
  background: linear-gradient(135deg, rgba(255, 232, 246, 0.78), rgba(233, 246, 223, 0.76));
}

.booth-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(340px, 1.2fr);
  align-items: center;
  gap: 42px;
}

.booth-grid img {
  border: 12px solid rgba(255, 255, 255, 0.72);
  border-radius: 26px;
  box-shadow: var(--shadow);
}

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

.link-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 24px 26px;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.link-card:hover,
.link-card:focus-visible {
  box-shadow: 0 24px 54px rgba(174, 73, 140, 0.16);
}

.link-card strong {
  color: var(--green);
  font-size: 18px;
}

.link-card span {
  color: var(--muted);
  font-size: 14px;
}

.closing-section {
  text-align: center;
}

.closing-box .button {
  margin-top: 14px;
}

.site-footer {
  padding: 30px 0;
  background: rgba(36, 92, 53, 0.96);
  color: var(--white);
  text-align: center;
}

.footer-center {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.footer-mark {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
}

.footer-copy {
  margin: 0;
  font-size: 14px;
}

.footer-top {
  position: absolute;
  right: 0;
  bottom: 0;
  font-size: 12px;
  font-weight: 400;
  color: var(--white);
  text-decoration: none;
}

.site-footer p {
  margin: 0;
}

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

  .poster-card {
    width: min(460px, 100%);
    margin: 0 auto;
  }

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

@media (max-width: 640px) {
  .container,
  .narrow {
    width: min(100% - 28px, 1120px);
  }

  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 12px 0;
  }

  .nav {
    width: 100%;
    justify-content: space-between;
  }

  .section {
    padding: 60px 0;
  }

  .hero {
    padding-top: 52px;
  }

  .intro-section .narrow,
  .closing-box,
  .card,
  .link-card {
    padding: 24px;
  }

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

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}