:root {
  --bg: #ffffff;
  --card: rgba(255, 255, 255, 0.92);
  --line: rgba(124, 131, 255, 0.14);
  --text: #2d3142;
  --muted: #6f7891;
  --blue: #dff1ff;
  --blue-strong: #84bff5;
  --pink: #ffe3f1;
  --pink-strong: #f49ac2;
  --purple: #efe6ff;
  --purple-strong: #aa93e8;
  --yellow: #fff4c9;
  --danger: #d85d86;
  --shadow: 0 16px 48px rgba(163, 176, 220, 0.18);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --max: 1100px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(223, 241, 255, 0.85), transparent 28%),
    radial-gradient(circle at top right, rgba(255, 227, 241, 0.75), transparent 30%),
    radial-gradient(circle at 50% 35%, rgba(239, 230, 255, 0.7), transparent 34%),
    linear-gradient(180deg, #ffffff 0%, #fbfcff 100%);
  line-height: 1.7;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
  border: 0;
}

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

.container {
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 0 0 68px;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  filter: blur(12px);
  z-index: 0;
  opacity: 0.8;
  pointer-events: none;
}

.hero::before {
  width: 260px;
  height: 260px;
  top: 180px;
  left: -80px;
  background: rgba(223, 241, 255, 0.9);
}

.hero::after {
  width: 300px;
  height: 300px;
  top: 120px;
  right: -80px;
  background: rgba(255, 227, 241, 0.72);
}

.hero-image-wrap {
  position: relative;
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
  overflow: visible;
}

.hero-image-wrap::after {
  content: none;
}

.hero-image {
  display: block;
  width: 100%;
  height: auto;
}

.hero-overlay {
  position: relative;
  margin-top: 12px;
}

.hero-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
  color: #4f5978;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 10px 24px rgba(35, 40, 70, 0.12);
}

.hero-card {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  align-items: center;
  padding: 26px;
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(255, 255, 255, 0.78);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  margin-top: 24px;
}

.hero-card-single {
  display: block;
}

.hero-copy {
  padding: 10px 4px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #50618c;
  margin-bottom: 18px;
}

h1 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 4.6vw, 3.6rem);
  line-height: 1.18;
  letter-spacing: 0.01em;
}

.hero-lead {
  margin: 0 0 18px;
  font-size: clamp(1rem, 2vw, 1.1rem);
  color: var(--muted);
}

.hero-highlight {
  display: inline-block;
  padding: 2px 10px;
  margin: 0 4px 4px 0;
  border-radius: 999px;
  background: linear-gradient(135deg, #ffd9ea, #efe6ff);
  color: #a24679;
  font-weight: 700;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 22px 0 28px;
}

.hero-meta-item {
  padding: 12px 14px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--line);
  font-size: 14px;
  color: #56607d;
  box-shadow: 0 8px 24px rgba(180, 190, 225, 0.12);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, #90cfff, #d7b9ff, #ffbdd8);
  color: #fff;
  box-shadow: 0 16px 30px rgba(186, 143, 229, 0.28);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--line);
  color: #586280;
}

.hero-visual {
  position: relative;
}

.hero-visual-card {
  position: relative;
  padding: 18px;
  border-radius: 30px;
  background: linear-gradient(180deg, rgba(255,255,255,0.95), rgba(248,250,255,0.93));
  border: 1px solid rgba(170, 147, 232, 0.15);
  box-shadow: 0 22px 44px rgba(163, 176, 220, 0.2);
}

.hero-visual-card img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: 24px;
  background: linear-gradient(135deg, var(--blue), var(--pink), var(--purple));
}

.prize-note {
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(223,241,255,0.62), rgba(255,227,241,0.52));
  font-size: 14px;
  color: #5e6783;
}

main {
  padding-bottom: 90px;
}

.section {
  padding: 26px 0;
}

.panel {
  background: var(--card);
  border: 1px solid rgba(170, 147, 232, 0.12);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  padding: 28px;
  backdrop-filter: blur(8px);
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 16px;
  margin-bottom: 22px;
}

.section-kicker {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: #7b83a3;
  text-transform: uppercase;
}

h2 {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  line-height: 1.25;
}

.section-sub {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

.notice-bar {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, #fff6ce, #ffe7f2);
  color: #7c6480;
  font-weight: 700;
  font-size: 14px;
}

.steps {
  display: grid;
  gap: 18px;
  margin-top: 24px;
}

.step {
  display: grid;
  grid-template-columns: 82px 1fr;
  gap: 18px;
  align-items: start;
  padding: 22px;
  border-radius: 24px;
  background: linear-gradient(180deg, #ffffff, #fafbff);
  border: 1px solid var(--line);
}

.step-no {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 82px;
  height: 82px;
  border-radius: 24px;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  color: #54638c;
  font-weight: 800;
  font-size: 1.2rem;
  line-height: 1;
  white-space: nowrap;
  box-shadow: 0 12px 24px rgba(166, 173, 235, 0.22);
}

.step h3 {
  margin: 2px 0 10px;
  font-size: 1.25rem;
  line-height: 1.4;
}

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

.check-list,
.note-list,
.faq-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li,
.note-list li {
  padding: 12px 14px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid rgba(132, 191, 245, 0.16);
  color: #5a6482;
}

.step-note-list {
  margin-top: 16px;
}

.step-media {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.step-media.single {
  grid-template-columns: 1fr;
  max-width: 500px;
}

.media-card {
  border-radius: 20px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--blue), var(--pink), var(--purple));
  border: 1px solid rgba(255,255,255,0.85);
  box-shadow: 0 10px 24px rgba(180, 190, 225, 0.16);
}

.media-card img {
  width: 100%;
  height: auto;
  object-fit: contain;
  aspect-ratio: auto;
  vertical-align: top;
}

.cta-box {
  margin-top: 16px;
  padding: 18px;
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(223,241,255,0.7), rgba(239,230,255,0.9), rgba(255,227,241,0.7));
  border: 1px solid rgba(170, 147, 232, 0.12);
}

.cta-box strong {
  display: block;
  margin-bottom: 10px;
  font-size: 1.05rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.soft-card {
  padding: 22px;
  border-radius: 24px;
  background: linear-gradient(180deg, #ffffff, #fbfcff);
  border: 1px solid var(--line);
}

.soft-card h3 {
  margin: 0 0 12px;
  font-size: 1.2rem;
}

.prize-card {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 18px;
  align-items: center;
  padding: 22px;
  border-radius: 26px;
  background: linear-gradient(135deg, rgba(255,255,255,0.96), rgba(248,250,255,0.95));
  border: 1px solid rgba(170, 147, 232, 0.14);
  box-shadow: 0 12px 28px rgba(163, 176, 220, 0.14);
}

.prize-card img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: 22px;
  background: linear-gradient(135deg, var(--blue), var(--pink), var(--purple));
}

.prize-badge {
  display: inline-block;
  margin-bottom: 10px;
  padding: 7px 12px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--pink), var(--purple));
  font-size: 13px;
  font-weight: 700;
  color: #83578f;
}

.prize-name {
  margin: 0 0 10px;
  font-size: 1.45rem;
  line-height: 1.35;
}

.prize-desc {
  margin: 0 0 12px;
  color: var(--muted);
}

.faq-list details {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  overflow: hidden;
}

.faq-list summary {
  cursor: pointer;
  list-style: none;
  padding: 16px 18px;
  font-weight: 700;
  position: relative;
}

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

.faq-list details p {
  margin: 0;
  padding: 0 18px 18px;
  color: var(--muted);
}

.foot-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 14px;
}

.link-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  color: #5b6482;
  font-weight: 700;
}

.footer {
  padding: 40px 0 70px;
  color: #7b84a3;
  font-size: 14px;
  text-align: center;
}

.footer-title {
  margin: 0 0 8px;
  font-weight: 700;
  color: #67708f;
}

.footer-text {
  margin: 0;
}

.mb18 {
  margin-bottom: 18px;
}

@media (max-width: 920px) {
  .hero-card,
  .grid-2,
  .prize-card {
    grid-template-columns: 1fr;
  }

  .hero-card {
    margin-top: 20px;
  }
}

@media (max-width: 700px) {
  .hero {
    padding-bottom: 48px;
  }

  .hero-card,
  .panel {
    padding: 20px;
  }

  .hero-overlay {
    bottom: 14px;
  }

  .hero-badge {
    min-height: 38px;
    padding: 0 12px;
    font-size: 12px;
  }

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

  .step-no {
    width: 110px;
    height: 72px;
  }

  .step-media {
    grid-template-columns: 1fr;
  }

  .section-head {
    align-items: start;
    flex-direction: column;
  }

  .hero-meta {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .hero-card {
    margin-top: 16px;
  }
}