/* =====================
   Custom Properties
   ===================== */
:root {
  --red:    #dc4545;
  --gold:   #e4c060;
  --bg:     #f1edc6;
  --white:  #ffffff;
  --ink:    #3d2c1e;
  --muted:  #8a705e;
  --border: rgba(61, 44, 30, 0.10);
  --shadow: rgba(61, 44, 30, 0.07);
}

/* =====================
   Reset & Base
   ===================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'M PLUS Rounded 1c', 'Hiragino Maru Gothic ProN', 'ヒラギノ丸ゴ ProN',
               'Rounded Mplus 1c', sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 2.0;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; }

.wrap {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
}

/* =====================
   Accessibility
   ===================== */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* =====================
   Hero
   ===================== */
.hero {
  display: block;
  width: 100%;
  background: var(--bg);
  line-height: 0;
}

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

/* =====================
   赤いフェスティバルバンド
   （ヒーロー直下・SCROLLと波形移行）
   ===================== */
.hero-band {
  background: var(--red);
  text-align: center;
  padding: 24px 0 0;
  line-height: 0; /* SVG の下隙間を消す */
}

.hero-wave {
  display: block;
  width: 100%;
  height: 52px;
}

/* SCROLLインジケーター（赤バンド上に白で表示） */
.scroll-indicator {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding-bottom: 12px;
  line-height: 1;
}

.scroll-text {
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 10px;
  letter-spacing: 0.4em;
  color: rgba(255, 255, 255, 0.85);
}

.scroll-line {
  width: 1px;
  height: 36px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.7), transparent);
  animation: scroll-drop 2s ease-in-out infinite;
  transform-origin: top;
}

@keyframes scroll-drop {
  0%   { transform: scaleY(0); opacity: 0; }
  30%  { opacity: 1; }
  100% { transform: scaleY(1); opacity: 0; }
}

/* =====================
   波形区切り（セクション間）
   ===================== */
.wave-divider {
  display: block;
  line-height: 0;
  margin: 0;
}

.wave--white-to-bg { background: var(--white); }
.wave--bg-to-white { background: var(--bg); }

.wave-divider svg {
  display: block;
  width: 100%;
  height: 48px;
}

/* =====================
   Section Base
   ===================== */
section { padding: 80px 0; }

.sec-header {
  text-align: center;
  margin-bottom: 52px;
}

/* セクションラベル → 赤に */
.sec-label {
  display: inline-block;
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 11px;
  letter-spacing: 0.5em;
  color: var(--red);
  border-bottom: 1px solid var(--red);
  padding-bottom: 4px;
  margin-bottom: 14px;
}

.sec-title {
  font-size: clamp(25px, 5.5vw, 36px);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ink);
  margin-bottom: 14px;
}

/* セクションタイトル下の赤い下線 */
.sec-title::after {
  content: '';
  display: block;
  width: 44px;
  height: 3px;
  background: var(--red);
  margin: 12px auto 0;
  border-radius: 2px;
}

.sec-lead {
  font-size: clamp(14px, 2.5vw, 16px);
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* =====================
   About Section
   ===================== */
.about-section {
  background: var(--white);
}

.about-body {
  max-width: 680px;
  margin: 0 auto;
}

.about-body p {
  font-size: clamp(15px, 2.2vw, 16.5px);
  margin-bottom: 1.75em;
  text-align: justify;
  text-justify: inter-ideograph;
}

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

/* =====================
   Notice Section
   （クリーム地 + 赤ドット地紋でお祭り感）
   ===================== */
.notice-section {
  background-color: var(--bg);
  background-image: radial-gradient(circle, rgba(220, 69, 69, 0.10) 1.5px, transparent 1.5px);
  background-size: 22px 22px;
  padding: 80px 0;
}

.notice-card {
  background: var(--white);
  border: 2px solid var(--red);
  border-radius: 28px;
  padding: 56px 52px;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
  box-shadow: 0 4px 32px rgba(220, 69, 69, 0.10);
}

.notice-tag {
  display: inline-block;
  background: var(--red);
  color: var(--white);
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 11px;
  letter-spacing: 0.35em;
  padding: 6px 20px;
  border-radius: 999px;
  margin-bottom: 22px;
}

.notice-card h2 {
  font-size: clamp(17px, 3.8vw, 21px);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.7;
  margin-bottom: 18px;
}

.notice-card p {
  font-size: 15px;
  color: var(--muted);
  line-height: 2.0;
  max-width: 480px;
  margin: 0 auto;
}

/* =====================
   Overview Section
   ===================== */
.overview-section {
  background: var(--white);
}

.overview-list {
  max-width: 600px;
  margin: 0 auto;
  border-top: 2px solid var(--red);
}

.overview-item {
  display: grid;
  grid-template-columns: 96px 1fr;
  border-bottom: 1px solid var(--border);
}

.overview-item dt {
  padding: 20px 12px 20px 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--red);
  letter-spacing: 0.08em;
}

.overview-item dd {
  padding: 20px 0;
  font-size: 15.5px;
}

/* =====================
   SNS Section
   ===================== */
.sns-section { background: var(--bg); }

.sns-wrapper { display: flex; justify-content: center; }

.sns-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  background: var(--white);
  border-radius: 28px;
  padding: 52px 64px;
  text-align: center;
  position: relative;
  box-shadow: 0 4px 32px var(--shadow);
  min-width: 260px;
}

.sns-badge {
  position: absolute;
  top: -13px;
  right: 28px;
  background: var(--red);
  color: var(--white);
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 11px;
  letter-spacing: 0.2em;
  padding: 5px 16px;
  border-radius: 999px;
}

.sns-icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  background: linear-gradient(135deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.sns-icon { width: 34px; height: 34px; fill: var(--white); }

.sns-handle {
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 15px;
  color: var(--muted);
  letter-spacing: 0.05em;
}

.sns-desc {
  font-size: 14px;
  color: var(--muted);
  max-width: 210px;
  line-height: 1.85;
}

/* =====================
   Footer
   ===================== */
footer {
  background: var(--ink);
  color: #c8baa8;
  padding: 64px 24px;
  text-align: center;
  font-size: 13.5px;
  line-height: 2.1;
  border-top: 4px solid var(--red);
}

.footer-org {
  color: var(--white);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}

.footer-support {
  font-size: 13px;
  color: #a89588;
  margin-bottom: 28px;
}

.footer-copy {
  font-size: 11.5px;
  color: #6e6258;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 22px;
  line-height: 1.9;
}

/* =====================
   Scroll Animations
   ===================== */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-up.in-view {
  opacity: 1;
  transform: none;
}

/* =====================
   Responsive
   ===================== */
@media (max-width: 640px) {
  section { padding: 64px 0; }

  .notice-section { padding: 64px 0; }

  .notice-card {
    padding: 40px 24px;
    border-radius: 20px;
  }

  .notice-card h2 { font-size: 17px; }

  .overview-item { grid-template-columns: 76px 1fr; }
  .overview-item dt,
  .overview-item dd { padding: 14px 4px; font-size: 14px; }

  .sns-card {
    padding: 44px 40px;
    border-radius: 20px;
  }
}