/* ==================================================
   TAMON WATER SPLASH 2026 — NEW STYLE
   Design: Deep ocean dark + Splatoon-inspired
   Color palette: unified, icon-driven, readable
   ================================================== */

@import url('https://fonts.googleapis.com/css2?family=Dela+Gothic+One&family=Noto+Sans+JP:wght@400;500;700;900&display=swap');

:root {
  /* Base */
  --bg: #060C18;
  --bg2: #0D1A2F;
  --bg3: #0A1425;
  --surface: #111E35;
  --border: rgba(0, 200, 255, 0.15);

  /* Text */
  --text: #E8F4FF;
  --text2: rgba(232, 244, 255, 0.65);
  --muted: rgba(232, 244, 255, 0.38);

  /* Brand colors — unified set */
  --c-splash: #00C8FF;
  /* cyan / water */
  --c-tasuke: #FF5E3A;
  /* coral orange */
  --c-mini: #FFD600;
  /* golden yellow */
  --accent: #00FFB0;
  /* mint green */
  --warn: #FF3A5E;
  /* danger red */
  --neon-pink: #FF3A8C;
  /* pink */

  /* Fonts */
  --fd: 'Dela Gothic One', sans-serif;
  --fb: 'Noto Sans JP', sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  /* Spacing */
  --px: clamp(1.25rem, 5vw, 2.5rem);
  --section-py: clamp(4rem, 8vw, 7rem);

  /* Radii */
  --r: 4px;
  --r2: 8px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--fb);
  overflow-x: hidden;
  line-height: 1.75;
}

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

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

ul,
ol {
  list-style: none;
}

/* ==================================================
   SCROLL REVEAL
   ================================================== */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.72s var(--ease), transform 0.72s var(--ease);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==================================================
   HEADER
   ================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 0 var(--px);
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background 0.4s, border-bottom 0.4s;
  background: transparent;
}

.site-header.scrolled {
  background: rgba(6, 12, 24, 0.96);
  border-bottom: 2px solid var(--c-splash);
  backdrop-filter: blur(12px);
}


.header-logo {
  display: flex;
    font-family: var(--fd);
      font-size: clamp(0.75rem, 2vw, 1rem);
      letter-spacing: 0.06em;
      color: #fff;
  align-items: center;
  gap: 10px;
  /* ロゴと文字の間隔 */
  text-decoration: none;
}

.logo-svg {
  height: 32px;
  /* ヘッダーの高さに合わせて調整してください */
  width: auto;
  display: block;
}

/* モバイル対応：必要に応じてサイズを微調整 */
@media (max-width: 768px) {
  .logo-svg {
    height: 24px;
  }
}

.header-nav {
  display: flex;
  gap: clamp(0.8rem, 2vw, 1.6rem);
  align-items: center;
}

.header-nav a {
  font-family: var(--fb);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.25s;
  position: relative;
}

.header-nav a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--c-splash);
  transition: width 0.3s var(--ease);
  border-radius: 2px;
}

.header-nav a:hover {
  color: var(--c-splash);
}

.header-nav a:hover::after {
  width: 100%;
}

.header-nav a[data-color="splash"]:hover {
  color: var(--c-splash);
}

.header-nav a[data-color="splash"]:hover::after {
  background: var(--c-splash);
}

.header-nav a[data-color="tasuke"]:hover {
  color: var(--c-tasuke);
}

.header-nav a[data-color="tasuke"]:hover::after {
  background: var(--c-tasuke);
}

.header-nav a[data-color="mini"]:hover {
  color: var(--c-mini);
}

.header-nav a[data-color="mini"]:hover::after {
  background: var(--c-mini);
}

.header-nav a[data-color="caution"]:hover {
  color: var(--warn);
}

.header-nav a[data-color="contact"]:hover {
  color: var(--accent);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 6px;
  z-index: 101;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  transition: 0.3s;
  border-radius: 1px;
}

/* ==================================================
   MOBILE NAV
   ================================================== */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--bg);
  border-left: 4px solid var(--c-splash);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.2rem;
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav a {
  font-family: var(--fb);
  font-weight: 900;
  font-size: clamp(1.5rem, 6vw, 2rem);
  letter-spacing: 0.03em;
  color: var(--text2);
  transition: color 0.25s;
}

.mobile-nav a[data-color="splash"]:hover {
  color: var(--c-splash);
}

.mobile-nav a[data-color="tasuke"]:hover {
  color: var(--c-tasuke);
}

.mobile-nav a[data-color="mini"]:hover {
  color: var(--c-mini);
}

.mobile-nav a[data-color="caution"]:hover {
  color: var(--warn);
}

.mobile-nav a[data-color="contact"]:hover {
  color: var(--accent);
}

.mobile-nav-close {
  position: absolute;
  top: 1.2rem;
  right: var(--px);
  background: none;
  border: none;
  color: var(--muted);
  font-size: 1.6rem;
  cursor: pointer;
  transition: color 0.25s;
  line-height: 1;
}

.mobile-nav-close:hover {
  color: var(--warn);
}

/* ==================================================
   SVG ICONS (inline SVG helpers)
   ================================================== */
.icon {
  display: inline-block;
  width: 1.2em;
  height: 1.2em;
  vertical-align: middle;
  flex-shrink: 0;
}

.icon svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
}

/* ==================================================
   HERO
   ================================================== */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 80px var(--px) clamp(3rem, 6vw, 5rem);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('images/helo-bg.webp');
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
}

/* 暗くするオーバーレイ */
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(6, 12, 24, 0.90);
}

/* メッシュグラデーション（元のまま） */
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 200, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 200, 255, 0.04) 1px, transparent 1px);
  background-size: 52px 52px;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 900px;
  width: 100%;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  /* font-family: var(--fd); */
  font-size: 0.62rem;
  letter-spacing: 0.32em;
  color: #fff;
  /* background: var(--accent); */
  padding: 0.4em 1.4em;
  margin-bottom: 1.4rem;
  /* border-radius: var(--r); */
  opacity: 0;
  animation: fadeUp 0.6s 0.3s var(--ease) forwards;
}

.hero-organizer {
  font-family: var(--fb);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--muted);
  margin-bottom: 0.6rem;
  opacity: 0;
  animation: fadeUp 0.6s 0.2s var(--ease) forwards;
}

.hero-title {
  font-family: var(--fd);
  font-size: clamp(2.6rem, 10vw, 7.5rem);
  line-height: 0.95;
  letter-spacing: 0.02em;
  opacity: 0;
  animation: fadeUp 0.8s 0.5s var(--ease) forwards;
}

.hero-title .yellow {
  color: var(--c-mini);
  display: block;
}

.hero-title .cyan {
  color: var(--c-splash);
  display: block;
}

.hero-title .pink {
  color: var(--neon-pink);
  display: block;
  font-size: 0.6em;
}

.hero-subtitle-ja {
  font-family: var(--fd);
  font-size: clamp(1.3rem, 4.5vw, 2.4rem);
  color: var(--c-mini);
  letter-spacing: 0.08em;
  margin-top: 0.4rem;
  opacity: 0;
  animation: fadeUp 0.7s 0.7s var(--ease) forwards;
}

/* Event info */
.hero-event-info {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: 1.8rem;
  opacity: 0;
  animation: fadeUp 0.7s 0.9s var(--ease) forwards;
}

.hero-event-date {
  display: flex;
  align-items: baseline;
  gap: 0.3em;
  border: 2px solid var(--c-mini);
  padding: 0.4em 0.9em;
  border-radius: var(--r);
}

.event-date-main {
  font-family: var(--fd);
  font-size: clamp(2rem, 7vw, 3.5rem);
  color: var(--c-mini);
  line-height: 1;
}

.event-date-main .slash {
  color: rgba(255, 214, 0, 0.45);
}

.event-date-sub {
  font-family: var(--fd);
  font-size: 0.85rem;
  color: var(--c-mini);
}

.hero-event-detail {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  text-align: left;
}

.event-detail-row {
  font-size: large;
  color: var(--text2);
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 0.5em;
}

.event-detail-row .d-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: 0.7;
}

.event-detail-row.free-badge {
  display: inline-flex;
  align-items: center;
  color:var(--c-splash);
  padding: 0.3em 0.9em;
  letter-spacing: 0.06em;
  border-radius: var(--r);
  font-size:large;
}

.hero-rain-banner {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  margin-top: 1.2rem;
  background: rgba(255, 61, 140, 0.1);
  border: 1.5px solid var(--neon-pink);
  border-left: 5px solid var(--neon-pink);
  padding: 0.7rem 1.2rem;
  text-align: left;
  border-radius: var(--r);
  opacity: 0;
  animation: fadeUp 0.7s 1.05s var(--ease) forwards;
}

.rain-icon {
  width: 24px;
  height: 24px;
  color: var(--neon-pink);
  flex-shrink: 0;
}

.hero-rain-banner strong {
  display: block;
  color: var(--neon-pink);
  letter-spacing: 0.08em;
}

.hero-rain-banner span {
  color: var(--text2);
}

.hero-games {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
  margin-top: 1.6rem;
  opacity: 0;
  animation: fadeUp 0.7s 1.1s var(--ease) forwards;
}

.hero-game-tag {
  font-family: var(--fd);
  font-size: 0.72rem;
  padding: 0.45em 1.1em;
  border-radius: var(--r);
  border: 2px solid;
  transition: background 0.25s, color 0.25s;
  display: flex;
  align-items: center;
  gap: 0.4em;
}

.hero-game-tag.splash {
  border-color: var(--c-splash);
  color: var(--c-splash);
}

.hero-game-tag.splash:hover {
  background: var(--c-splash);
  color: #060C18;
}

.hero-game-tag.tasuke {
  border-color: var(--c-tasuke);
  color: var(--c-tasuke);
}

.hero-game-tag.tasuke:hover {
  background: var(--c-tasuke);
  color: #fff;
}

.hero-game-tag.mini {
  border-color: var(--c-mini);
  color: var(--c-mini);
}

.hero-game-tag.mini:hover {
  background: var(--c-mini);
  color: #060C18;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-top: 1.8rem;
  opacity: 0;
  animation: fadeUp 0.7s 1.25s var(--ease) forwards;
}

        @media (max-width: 768px) {
          .hero-logo-svg {
            height: 80px !important;
          }
        }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--fb);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  padding: 0.75em 1.8em;
  border-radius: var(--r);
  transition: background 0.25s, color 0.25s, transform 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--c-splash);
  color: #060C18;
}

.btn-primary:hover {
  background: #fff;
  color: #060C18;
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--text2);
  border: 2px solid rgba(232, 244, 255, 0.25);
}

.btn-secondary:hover {
  border-color: var(--c-splash);
  color: var(--c-splash);
  transform: translateY(-2px);
}

.btn .btn-icon {
  width: 16px;
  height: 16px;
}

.hero-subsidy {
  margin-top: 1.5rem;
  letter-spacing: 0.06em;
  opacity: 0;
  animation: fadeUp 0.6s 1.4s var(--ease) forwards;
}

/* Scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  opacity: 0;
  animation: fadeUp 0.6s 1.6s var(--ease) forwards;
}

.scroll-hint .line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--c-splash), transparent);
  animation: scrollLine 1.6s ease-in-out infinite;
}

.scroll-hint span {
  font-family: var(--fd);
  font-size: 0.55rem;
  letter-spacing: 0.35em;
  color: var(--muted);
}

/* Divider */
.cut {
  height: 48px;
  overflow: hidden;
  background: var(--bg2);
  clip-path: polygon(0 0, 100% 100%, 100% 100%, 0 100%);
  position: relative;
  z-index: 1;
}

.cut.rev {
  clip-path: polygon(0 100%, 100% 0, 100% 100%, 0 100%);
  background: var(--bg3);
}

/* ==================================================
   SECTIONS BASE
   ================================================== */
.section {
  padding: var(--section-py) var(--px);
  position: relative;
  overflow: hidden;
}

.section:nth-child(odd) {
  background: var(--bg2);
}

.section:nth-child(even) {
  background: var(--bg3);
}

.section-inner {
  max-width: 960px;
  margin: 0 auto;
}

.sec-eyebrow {
  font-family: var(--fd);
  font-size: 0.65rem;
  letter-spacing: 0.38em;
  color: var(--c-splash);
  margin-bottom: 0.6rem;
}

.sec-title {
  font-family: var(--fb);
  font-weight: 900;
  font-size: clamp(1.8rem, 5vw, 3rem);
  line-height: 1.15;
  letter-spacing: 0.01em;
  margin-bottom: 1.2rem;
  color: var(--text);
}

.sec-lead {
  font-size: 0.92rem;
  color: var(--text2);
  max-width: initial;
  line-height: 1.9;
  margin-bottom: 2.5rem;
}

/* ==================================================
   ACTIVITIES GRID
   ================================================== */
.activities {
  background: var(--bg2);
}

.act-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  overflow: hidden;
}

.act-card {
  padding: 2rem 1.5rem;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: background 0.3s;
}

.act-card:last-child {
  border-right: none;
}

.act-card:hover {
  background: rgba(0, 200, 255, 0.04);
}

.act-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  margin-bottom: 0.4rem;
  flex-shrink: 0;
}

.act-icon svg {
  width: 26px;
  height: 26px;
}

.act-card[data-game="splash"] .act-icon {
  background: rgba(0, 200, 255, 0.12);
  color: var(--c-splash);
}

.act-card[data-game="tasuke"] .act-icon {
  background: rgba(255, 94, 58, 0.12);
  color: var(--c-tasuke);
}

.act-card[data-game="mini"] .act-icon {
  background: rgba(255, 214, 0, 0.12);
  color: var(--c-mini);
}

.act-num {
  font-family: var(--fd);
  font-size: 0.6rem;
  letter-spacing: 0.28em;
  color: var(--muted);
}

.act-name {
  font-family: var(--fb);
  font-weight: 900;
  font-size: 1.05rem;
  color: var(--text);
  line-height: 1.3;
}

.act-desc {
  font-size: 0.82rem;
  color: var(--text2);
  flex: 1;
  line-height: 1.8;
}

.act-link {
  font-family: var(--fb);
  font-weight: 700;
  font-size: 0.78rem;
  color: var(--c-splash);
  transition: gap 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  margin-top: 0.4rem;
}

.act-link:hover {
  text-decoration: underline;
}

/* ==================================================
   GAME SECTIONS
   ================================================== */
.game-section {
  background: var(--bg3);
}

.game-section:nth-child(even) {
  background: var(--bg2);
}

.bg-num {
  position: absolute;
  right: -0.05em;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--fd);
  font-size: clamp(8rem, 22vw, 18rem);
  line-height: 1;
  color: rgba(0, 200, 255, 0.03);
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

/* Media slot */
.media-slot {
  position: relative;
  border: 2px solid var(--accent, var(--c-splash));
  border-radius: var(--r2);
  overflow: hidden;
  margin-bottom: 2.5rem;
  background: var(--bg);
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.media-slot-label {
  font-family: var(--fd);
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.2em;
  text-align: center;
  padding: 3rem 1rem;
  line-height: 2;
}

/* ==================================================
   PREP LIST
   ================================================== */
.prep-list {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  margin-bottom: 2.5rem;
}

.prep-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  padding: 1rem 1.25rem;
  transition: border-color 0.25s;
}

.prep-item:hover {
  border-color: rgba(0, 200, 255, 0.35);
}

.prep-item-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: 10px;
  background: rgba(0, 200, 255, 0.1);
  color: var(--c-splash);
  margin-top: 0.1rem;
}

.prep-item-icon svg {
  width: 20px;
  height: 20px;
}

.prep-item-body h4 {
  font-family: var(--fb);
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--text);
  margin-bottom: 0.2rem;
  line-height: 1.4;
}

.prep-item-body p {
  font-size: 0.82rem;
  color: var(--text2);
  line-height: 1.8;
}

#tasuke .prep-item-icon {
  color: var(--c-tasuke);
  background: rgba(255, 94, 58, 0.1);
}

#minigame .prep-item-icon {
  color: var(--c-mini);
  background: rgba(255, 214, 0, 0.1);
}

/* ==================================================
   RULES GRID
   ================================================== */
.rule-img-slot {
  border-radius: var(--r2);
  overflow: hidden;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border);
}

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

.rules-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.rule-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  padding: 1.4rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s;
}

.rule-card:hover {
  border-color: var(--c-splash);
  transform: translateY(-2px);
}

.rule-tag {
  font-family: var(--fd);
  font-size: 0.58rem;
  letter-spacing: 0.3em;
  color: var(--c-splash);
  display: block;
  margin-bottom: 0.3rem;
}

.r-num {
  font-family: var(--fd);
  font-size: 3.5rem;
  line-height: 1;
  color: rgba(0, 200, 255, 0.06);
  position: absolute;
  right: 0.5rem;
  bottom: 0.2rem;
  pointer-events: none;
}

.rule-card h3 {
  font-family: var(--fb);
  font-weight: 900;
  font-size: 0.95rem;
  color: var(--text);
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.rule-card p {
  font-size: 0.8rem;
  color: var(--text2);
  line-height: 1.85;
}

/* Game-color rule cards */
#tasuke .rule-tag {
  color: var(--c-tasuke);
}

#tasuke .rule-card:hover {
  border-color: var(--c-tasuke);
}

#tasuke .r-num {
  color: rgba(255, 94, 58, 0.06);
}

#minigame .rule-tag {
  color: var(--c-mini);
}

#minigame .rule-card:hover {
  border-color: var(--c-mini);
}

#minigame .r-num {
  color: rgba(255, 214, 0, 0.06);
}

/* ==================================================
   ACTIVITY CAUTION
   ================================================== */
.activity-caution {
  background: rgba(255, 61, 140, 0.06);
  border: 1px solid rgba(255, 61, 140, 0.25);
  border-left: 4px solid var(--warn);
  border-radius: var(--r2);
  padding: 1.2rem 1.5rem;
}

.activity-caution-header {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 0.8rem;
}

.activity-caution-header .warn-icon {
  width: 22px;
  height: 22px;
  color: var(--warn);
  flex-shrink: 0;
}

.activity-caution-header h3 {
  font-family: var(--fb);
  font-weight: 900;
  font-size: 0.92rem;
  color: var(--text);
  letter-spacing: 0.04em;
}

.activity-caution-list li {
  font-size: 0.82rem;
  color: var(--text2);
  line-height: 1.85;
  padding-left: 1.2rem;
  position: relative;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  padding-bottom: 0.4rem;
  margin-bottom: 0.4rem;
}

.activity-caution-list li:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.activity-caution-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.65rem;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--warn);
}

/* ==================================================
   CAUTIONS (Global)
   ================================================== */
.cautions {
  background: var(--bg2);
}

.caution-alert {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  background: rgba(255, 61, 94, 0.08);
  border: 1px solid rgba(255, 61, 94, 0.3);
  border-left: 5px solid var(--warn);
  border-radius: var(--r2);
  padding: 1.1rem 1.4rem;
  margin-bottom: 2rem;
}

.caution-alert-icon {
  width: 24px;
  height: 24px;
  color: var(--warn);
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.caution-alert strong {
  font-family: var(--fb);
  font-weight: 900;
  font-size: 0.92rem;
  color: var(--text);
  display: block;
  margin-bottom: 0.25rem;
}

.caution-alert p {
  font-size: 0.8rem;
  color: var(--text2);
  line-height: 1.8;
}

.caution-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.c-item {
  display: flex;
  gap: 1.2rem;
  align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  padding: 1.2rem 1.4rem;
  transition: border-color 0.25s;
}

.c-item:hover {
  border-color: var(--warn);
}

.c-num {
  font-family: var(--fd);
  font-size: 1.4rem;
  color: var(--warn);
  flex-shrink: 0;
  line-height: 1;
  margin-top: 0.1rem;
  min-width: 2rem;
  text-align: center;
}

.c-body h3 {
  font-family: var(--fb);
  font-weight: 900;
  font-size: 0.98rem;
  color: var(--text);
  margin-bottom: 0.35rem;
  line-height: 1.4;
}

.c-body p {
  font-size: 0.82rem;
  color: var(--text2);
  line-height: 1.85;
}

.c-tag {
  display: inline-block;
  background: rgba(255, 61, 94, 0.15);
  border: 1px solid rgba(255, 61, 94, 0.4);
  color: var(--warn);
  font-family: var(--fb);
  font-weight: 700;
  font-size: 0.72rem;
  padding: 0.2em 0.7em;
  border-radius: 999px;
  margin-top: 0.5rem;
}

/* ==================================================
   OVERALL CAUTIONS
   ================================================== */
.overall-cautions {
  background: var(--bg3);
}

.participation-notes {
  margin-top: 2rem;
  border: 1px solid rgba(255, 61, 140, 0.2);
  border-radius: var(--r2);
  overflow: hidden;
}

.participation-notes li {
  padding: 0.85rem 1.2rem 0.85rem 2.8rem;
  font-size: 0.85rem;
  color: var(--text2);
  line-height: 1.8;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  position: relative;
}

.participation-notes li:last-child {
  border-bottom: none;
}

.participation-notes li::before {
  content: '';
  position: absolute;
  left: 1.1rem;
  top: 1.1rem;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--neon-pink);
}

.subsidy-note {
  margin-top: 2rem;
  letter-spacing: 0.06em;
  text-align: center;
}

/* ==================================================
   BGM PLAYER — 折りたたみ式FAB
   ================================================== */

/* 常時表示の小さな丸ボタン */
.bgm-fab {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 300;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(6, 12, 24, 0.78);
  border: 1.5px solid rgba(0, 200, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0.52;
  backdrop-filter: blur(12px);
  transition: opacity 0.3s var(--ease), border-color 0.3s, box-shadow 0.3s;
  padding: 0;
}

.bgm-fab:hover {
  opacity: 1;
  border-color: rgba(0, 200, 255, 0.7);
}

.bgm-fab.open {
  opacity: 1;
  border-color: rgba(0, 200, 255, 0.6);
}

.bgm-fab.playing {
  border-color: rgba(0, 255, 176, 0.65);
  box-shadow: 0 0 10px rgba(0, 255, 176, 0.18);
}

.bgm-fab-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  transition: color 0.3s;
}

.bgm-fab-icon svg {
  width: 100%;
  height: 100%;
}

.bgm-fab.playing .bgm-fab-icon {
  color: var(--accent);
}

/* 折りたたみパネル — FABの左横に展開 */
.bgm-panel {
  position: fixed;
  bottom: 1.5rem;
  right: 3.8rem;
  z-index: 299;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  background: rgba(6, 12, 24, 0.96);
  border: 1.5px solid var(--c-splash);
  border-radius: var(--r2);
  padding: 0.75rem 1rem;
  backdrop-filter: blur(16px);
  min-width: 200px;
  transform-origin: right center;
  transform: scale(0.88) translateX(8px);
  opacity: 0;
  pointer-events: none;
  transition:
    transform 0.24s var(--ease),
    opacity 0.2s var(--ease),
    border-color 0.3s;
}

.bgm-panel.open {
  transform: scale(1) translateX(0);
  opacity: 1;
  pointer-events: auto;
}

.bgm-panel:has([aria-pressed="true"]) {
  border-color: rgba(0, 255, 176, 0.5);
}

.bgm-top-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.bgm-btn {
  display: flex;
  align-items: center;
  gap: 0.4em;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}

.bgm-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  color: var(--c-splash);
  transition: color 0.3s;
}

.bgm-icon svg {
  width: 100%;
  height: 100%;
}

.bgm-label {
  font-family: var(--fd);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.45);
  transition: color 0.3s;
  min-width: 4.2em;
  text-align: left;
}

.bgm-btn[aria-pressed="true"] .bgm-icon {
  color: var(--accent);
}

.bgm-btn[aria-pressed="true"] .bgm-label {
  color: var(--accent);
}

.bgm-visualizer {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 16px;
  opacity: 0;
  transition: opacity 0.4s;
  margin-left: auto;
}

.bgm-visualizer.active {
  opacity: 1;
}

.bgm-visualizer span {
  display: block;
  width: 3px;
  background: var(--accent);
  border-radius: 1px;
  height: 4px;
}

.bgm-visualizer.active span:nth-child(1) {
  animation: bgmBar 0.9s ease-in-out infinite;
}

.bgm-visualizer.active span:nth-child(2) {
  animation: bgmBar 0.7s ease-in-out infinite 0.15s;
}

.bgm-visualizer.active span:nth-child(3) {
  animation: bgmBar 1.1s ease-in-out infinite 0.3s;
}

.bgm-visualizer.active span:nth-child(4) {
  animation: bgmBar 0.8s ease-in-out infinite 0.1s;
}

@keyframes bgmBar {

  0%,
  100% {
    height: 4px;
  }

  50% {
    height: 16px;
  }
}

.bgm-track-name {
  font-family: var(--fb);
  font-size: 0.66rem;
  color: rgba(255, 255, 255, 0.38);
  letter-spacing: 0.04em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 180px;
  transition: color 0.3s;
}

.bgm-panel:has([aria-pressed="true"]) .bgm-track-name {
  color: rgba(0, 255, 176, 0.75);
}

.bgm-suno-credit {
    font-size: 0.58rem;
      color: rgba(255, 255, 255, 0.5);
      letter-spacing: 0.06em;
      line-height: 1;
      text-align: right;
}

/* 曲名ピル群 */
.bgm-track-pills {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
  margin-top: 0.1rem;
}

.bgm-pill {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  color: rgba(255, 255, 255, 0.38);
  font-family: var(--fb);
  font-size: 0.58rem;
  letter-spacing: 0.04em;
  padding: 0.22em 0.7em;
  cursor: pointer;
  transition:
    background 0.2s,
    border-color 0.2s,
    color 0.2s,
    box-shadow 0.2s;
  white-space: nowrap;
  line-height: 1.6;
}

.bgm-pill:hover {
  background: rgba(0, 200, 255, 0.1);
  border-color: rgba(0, 200, 255, 0.35);
  color: rgba(255, 255, 255, 0.65);
}

.bgm-pill.active,
.bgm-pill[aria-pressed="true"] {
  background: rgba(0, 255, 176, 0.1);
  border-color: rgba(0, 255, 176, 0.45);
  color: rgba(0, 255, 176, 0.9);
  box-shadow: 0 0 6px rgba(0, 255, 176, 0.12);
}

.bgm-volume-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.bgm-vol-icon {
  width: 14px;
  height: 14px;
  color: var(--muted);
  flex-shrink: 0;
}

.bgm-vol-icon svg {
  width: 100%;
  height: 100%;
}

.bgm-volume {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 3px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
  accent-color: var(--accent);
}

.bgm-volume::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  transition: transform 0.2s;
}

.bgm-volume::-webkit-slider-thumb:hover {
  transform: scale(1.3);
}

.bgm-volume::-moz-range-thumb {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--accent);
  border: none;
  cursor: pointer;
}

/* ==================================================
   FOOTER
   ================================================== */
.site-footer {
  position: relative;
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 3rem var(--px) 2rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 15% 100%, rgba(0, 200, 255, 0.18) 0%, transparent 65%),
    radial-gradient(ellipse 50% 60% at 85% 90%, rgba(0, 255, 176, 0.13) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 50% 110%, rgba(255, 61, 140, 0.12) 0%, transparent 55%);
  pointer-events: none;
  z-index: 0;
}

.site-footer>* {
  position: relative;
  z-index: 1;
}

.footer-logo {
  font-family: var(--fd);
  font-size: clamp(1rem, 3vw, 1.5rem);
  letter-spacing: 0.06em;
  color: var(--text);
}

.footer-games {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.footer-games .s {
  color: var(--c-splash);
  font-family: var(--fd);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

.footer-games .t {
  color: var(--c-tasuke);
  font-family: var(--fd);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

.footer-games .m {
  color: var(--c-mini);
  font-family: var(--fd);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

.footer-games span::before {
  content: '◆ ';
  font-size: 0.6em;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.footer-nav a {
  font-family: var(--fb);
  font-weight: 700;
  font-size: 0.75rem;
  color: var(--text2);
  transition: color 0.25s;
  letter-spacing: 0.04em;
}

.footer-nav a:hover {
  color: var(--c-splash);
}

.footer-contact {
  width: 100%;
  max-width: 600px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  padding: 1.8rem;
}

.footer-contact-inner {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  justify-content: center;
  flex-wrap: wrap;
}

.footer-qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.qr-img {
  width: 130px;
  height: 130px;
  border-radius: var(--r);
}

.qr-label {
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.08em;
}

.footer-contact-info {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  text-align: left;
}

.footer-contact-title {
  font-family: var(--fb);
  font-weight: 900;
  font-size: 1rem;
  color: var(--text);
  letter-spacing: 0.04em;
}

.footer-entry-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  background: var(--c-splash);
  color: #060C18;
  font-family: var(--fb);
  font-weight: 700;
  font-size: 0.82rem;
  padding: 0.6em 1.2em;
  border-radius: var(--r);
  transition: background 0.25s, transform 0.2s;
}

.footer-entry-link:hover {
  background: #fff;
  transform: translateY(-1px);
}

.footer-entry-link .btn-icon {
  width: 14px;
  height: 14px;
}

.footer-email-area {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.footer-email-label {
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.footer-email {
  font-family: var(--fb);
  font-weight: 700;
  font-size: 0.82rem;
  color: var(--accent);
  letter-spacing: 0.04em;
  transition: color 0.25s;
}

.footer-email:hover {
  color: #fff;
  text-decoration: underline;
}

.footer-copy {
  font-size: 0.68rem;
  color: var(--muted);
}

/* ==================================================
   KEYFRAMES
   ================================================== */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(22px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scrollLine {

  0%,
  100% {
    opacity: 1;
    transform: scaleY(1);
  }

  50% {
    opacity: 0.2;
    transform: scaleY(0.4);
  }
}

/* ==================================================
   RESPONSIVE
   ================================================== */
@media (max-width: 900px) {
  .rules-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 767px) {
  .header-nav {
    display: none !important;
  }

  .hamburger {
    display: flex !important;
  }

  .cut {
    height: 32px;
  }

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

  .act-card {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .act-card:last-child {
    border-bottom: none;
  }

  .bgm-fab {
    bottom: 1rem;
    right: 1rem;
    width: 36px;
    height: 36px;
  }

  .bgm-panel {
    bottom: 1rem;
    right: 3.4rem;
    padding: 0.55rem 0.8rem;
    min-width: 175px;
  }

  .bgm-track-name {
    max-width: 130px;
  }

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

  .footer-contact-info {
    text-align: center;
    align-items: center;
  }

  .hero-event-info {
    flex-direction: column;
    align-items: center;
  }

  .hero-event-detail {
    align-items: center;
  }
}


/* ── 開催状況ネオンバッジ ── */
/* ── 開催状況ネオンバッジ ── */
#event-status[data-status="hidden"] .neon-badge {
  display: none;
}

#event-status[data-status="go"] .neon-go {
  display: inline-flex;
}

#event-status[data-status="go"] .neon-delay {
  display: none;
}

#event-status[data-status="delay"] .neon-delay {
  display: inline-flex;
}

#event-status[data-status="delay"] .neon-go {
  display: none;
}

.neon-badge {
  display: none;
  align-items: center;
  gap: 12px;
  padding: 10px 24px;
}

/* 決行 — シアン */
.neon-go {
  border: 2px solid #00C8FF;
  background: rgba(0, 200, 255, 0.06);
  box-shadow: 0 0 6px rgba(0, 200, 255, 0.6),
    0 0 20px rgba(0, 200, 255, 0.2);
}

.neon-go .neon-dot {
  background: #00C8FF;
  box-shadow: 0 0 4px #00C8FF, 0 0 12px #00C8FF;
}

.neon-go .neon-word {
  color: #00C8FF;
  text-shadow: 0 0 4px rgba(255, 60, 160, 0.5);
}

.neon-go .neon-sub {
  color: rgba(0, 200, 255, 0.7);
}

/* 順延 — ピンク */
.neon-delay {
  border: 2px solid var(--neon-pink);
  background: rgba(255, 60, 160, 0.06);
  box-shadow: 0 0 4px rgba(255, 60, 160, 0.6),
    0 0 20px rgba(255, 60, 160, 0.2);
}

.neon-delay .neon-dot {
  background: var(--neon-pink);
  box-shadow: 0 0 4px #FF3CA0, 0 0 12px var(--neon-pink);
}

.neon-delay .neon-word {
  color: var(--neon-pink);
  text-shadow: 0 0 4px rgba(255, 60, 160, 0.5);
}

.neon-delay .neon-sub {
  color: rgba(255, 60, 160, 0.75);
}

/* 共通 */
.neon-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.neon-text {
  display: flex;
  flex-direction: column;
}

.neon-word {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  line-height: 1;
}

.neon-sub {
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  margin-top: 3px;
}

.notice {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 16px;
  font-size: 16px;
  line-height: 1.8;
}

.notice p {
  margin: 0 0 1.2em;
}

.notice__heading {
  font-size: 1.25em;
  line-height: 1.5;
  margin: 0 0 1em;
}

.notice__subheading {
  font-size: 1.1em;
  line-height: 1.5;
  margin: 1.5em 0 0.8em;
}

.notice__chat-link a {
  word-break: break-all;
}

@media (max-width: 480px) {
  .notice {
    font-size: 15px;
    padding: 0 12px;
  }
}

/* 視覚的には隠すがスクリーンリーダーには読ませる */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.notice__heading::before,
.notice__subheading::before {
  content: "■ ";
}

.notice__schedule dt {
  font-weight: bold;
  margin-top: 0.5em;
}

.notice__schedule dd {
  margin: 0 0 0.5em 1em;
}