[hidden] { display: none !important; }

/* ============================================================
   CSS 変数（visual.md より）
   ============================================================ */
:root {
  /* ベース：越前の深海 */
  --c-bg-deep:        #0d1b2e;
  --c-bg-base:        #121e30;
  --c-surface:        #1a2d45;
  --c-surface-raised: #1f3550;
  --c-border:         #2a4060;
  --c-border-glow:    #3a5a80;

  /* ステータス3色 */
  --c-active:         #c84b1a;
  --c-active-glow:    rgba(200, 75, 26, 0.25);
  --c-active-text:    #f4c99e;
  --c-upcoming:       #2563a8;
  --c-upcoming-glow:  rgba(37, 99, 168, 0.25);
  --c-upcoming-text:  #90bde8;
  --c-waiting:        #4a5568;
  --c-waiting-text:   #94a3b8;

  /* テキスト */
  --c-text-primary:   #f0ede8;
  --c-text-body:      #c8c4bc;
  --c-text-muted:     #9b9890;
  --c-text-disabled:  #4a4844;

  /* アクセント */
  --c-accent-crab:    #c84b1a;
  --c-accent-sakura:  #e89aaa;
  --c-accent-summer:  #1d9e7a;
  --c-accent-kiku:    #c9963a;
  --c-accent-snow:    #d4e8f5;

  /* CTA */
  --c-cta-bg:         #c84b1a;
  --c-cta-text:       #ffffff;
  --c-cta-hover-bg:   #e05520;

  /* フォント */
  --font-heading: "Noto Serif JP", "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", serif;
  --font-body:    "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Meiryo", system-ui, sans-serif;
  --font-number:  "Cormorant Garamond", "Noto Serif JP", Georgia, serif;

  /* 余白 */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 40px;
  --space-3xl: 48px;
  --space-4xl: 64px;

  /* 角丸 */
  --radius-tile: 12px;
  --radius-btn: 8px;
  --radius-badge: 4px;
  --radius-modal: 16px;

  /* 影 */
  --shadow-card:  0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-tile-default:        0 2px 8px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--c-border);
  --shadow-tile-active-hover:   0 8px 24px rgba(200, 75, 26, 0.35), 0 0 0 2px var(--c-active);
  --shadow-tile-upcoming-hover: 0 8px 24px rgba(37, 99, 168, 0.35), 0 0 0 2px var(--c-upcoming);

  /* フォーカス */
  --focus-ring: 0 0 0 3px var(--c-border-glow);
}

/* ============================================================
   リセット＆ベース
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  padding: 0;
  background-color: var(--c-bg-base);
  color: var(--c-text-body);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  color: var(--c-text-primary);
  margin: 0;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

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

/* ============================================================
   ボタン
   ============================================================ */
.btn-primary {
  display: block;
  min-height: 52px;
  padding: 14px 32px;
  max-width: 340px;
  margin-left: auto;
  margin-right: auto;
  background: var(--c-cta-bg);
  color: var(--c-cta-text);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--radius-btn);
  border: none;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
}

.btn-primary:hover {
  background: var(--c-cta-hover-bg);
  box-shadow: 0 4px 16px rgba(200, 75, 26, 0.45);
  transform: translateY(-1px);
}

.btn-primary:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring), 0 4px 16px rgba(200, 75, 26, 0.45);
}

.btn-primary:active { transform: translateY(0); }

.btn-primary[disabled],
.btn-primary[aria-disabled="true"] {
  background: #555;
  color: #aaa;
  cursor: not-allowed;
  pointer-events: none;
  box-shadow: none;
  transform: none;
}

.btn-secondary {
  display: block;
  min-height: 44px;
  padding: 10px 24px;
  max-width: 280px;
  margin: 12px auto 0;
  background: transparent;
  color: var(--c-upcoming-text);
  border: 1.5px solid var(--c-border-glow);
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 500;
  transition: border-color 0.2s, color 0.2s;
}

.btn-secondary:hover {
  border-color: var(--c-upcoming);
  color: #b8d8f0;
}

.btn-secondary:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* CSS パルスアニメ（初回オンボーディング） */
.cta-pulse {
  position: relative;
  animation: ctaPulse 2.0s ease-in-out infinite;
}
@keyframes ctaPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(200, 75, 26, 0.55); }
  50%      { box-shadow: 0 0 0 16px rgba(200, 75, 26, 0); }
}

/* ============================================================
   Layer 0: ヒーロー
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  width: 100%;
  overflow: hidden;
  background-color: var(--c-bg-deep);
  display: flex;
  flex-direction: column;
}

.hero-bg-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.65;
  filter: brightness(0.85) saturate(1.1);
  z-index: 0;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(13, 27, 46, 0.92) 0%,
    rgba(13, 27, 46, 0.4) 50%,
    rgba(13, 27, 46, 0.15) 100%
  );
  pointer-events: none;
  z-index: 1;
}

.hero-overlay {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  min-height: 100vh;
  padding: 24px 16px 40px;
  text-align: center;
}

.hero-header {
  width: 100%;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
}

.hero-app-name {
  font-size: clamp(18px, 2.5vw, 24px);
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
  color: var(--c-text-primary);
  text-shadow: 0 2px 8px rgba(0,0,0,0.6);
}

.hero-subtitle-tag {
  font-family: var(--font-heading);
  font-size: clamp(12px, 1.6vw, 14px);
  font-weight: 300;
  letter-spacing: 0.18em;
  color: var(--c-text-body);
  text-shadow: 0 2px 8px rgba(0,0,0,0.6);
  margin-top: 0;
}

.hero-center {
  width: 100%;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.hero-countdown-label {
  font-family: var(--font-heading);
  font-weight: 300;
  font-size: clamp(14px, 2vw, 20px);
  letter-spacing: 0.1em;
  color: rgba(240, 237, 232, 0.85);
  text-shadow: 0 2px 10px rgba(0,0,0,0.7);
  margin-bottom: -4px;
}

.hero-countdown-wrap {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 8px;
  line-height: 1;
}

.hero-countdown-number {
  font-family: var(--font-number);
  font-weight: 700;
  font-size: clamp(72px, 14vw, 160px);
  color: var(--c-text-primary);
  letter-spacing: -0.03em;
  text-shadow: 0 2px 20px rgba(0,0,0,0.85), 0 4px 40px rgba(0,0,0,0.6);
  line-height: 1;
}

.hero-countdown-unit {
  font-family: var(--font-heading);
  font-size: clamp(20px, 3vw, 40px);
  font-weight: 400;
  color: var(--c-text-body);
  text-shadow: 0 2px 12px rgba(0,0,0,0.7);
}

.disclaimer {
  font-size: 11px;
  line-height: 1.6;
  color: var(--c-text-muted);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.hero-disclaimer { text-shadow: 0 1px 4px rgba(0,0,0,0.8); color: #bcb6a8; }

.hero-now {
  font-family: var(--font-heading);
  font-size: clamp(13px, 1.6vw, 16px);
  font-weight: 400;
  color: var(--c-active-text);
  letter-spacing: 0.08em;
  text-shadow: 0 2px 10px rgba(0,0,0,0.6);
  margin: 8px 0 4px;
  min-height: 1.4em;
}

.hero-streak-line {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--c-text-body);
  letter-spacing: 0.04em;
  text-shadow: 0 1px 4px rgba(0,0,0,0.8);
  margin-top: 6px;
}

.streak-fire { font-size: 16px; }

.hero-public-disclaimer {
  font-size: 11px;
  color: var(--c-text-muted);
  margin-top: 12px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  text-shadow: 0 1px 4px rgba(0,0,0,0.8);
}

.scroll-cue {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--c-text-body);
  letter-spacing: 0.1em;
  text-shadow: 0 1px 4px rgba(0,0,0,0.8);
  cursor: pointer;
  padding: 8px 16px;
  transition: opacity 0.2s;
}
.scroll-cue:hover { opacity: 0.7; }
.scroll-arrow {
  font-size: 20px;
  animation: scrollBounce 1.8s ease-in-out infinite;
}
@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(6px); }
}

/* 解禁日演出 */
.hero.is-release-day .hero-countdown-number {
  font-family: var(--font-heading);
  font-size: clamp(48px, 9vw, 96px);
  color: var(--c-active-text);
  animation: releaseFadeIn 1.2s ease-out forwards;
}
.hero.is-release-day .hero-countdown-unit { display: none; }
@keyframes releaseFadeIn {
  from { opacity: 0; transform: scale(0.85); }
  to   { opacity: 1; transform: scale(1); }
}

/* ============================================================
   Layer 1: カレンダー
   ============================================================ */
.calendar-section {
  position: relative;
  background-color: var(--c-bg-base);
  padding: 56px 16px 48px;
  overflow: hidden;
}

.calendar-bg-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.18;
  filter: blur(6px);
  z-index: 0;
}

.calendar-container {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
}

.calendar-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--c-text-primary);
}

.section-lead {
  font-family: var(--font-heading);
  font-weight: 300;
  font-size: clamp(13px, 1.8vw, 15px);
  color: var(--c-text-body);
  text-align: center;
  line-height: 1.9;
  max-width: 540px;
  margin: 0 auto 32px;
}

.btn-about {
  font-size: 13px;
  color: var(--c-upcoming-text);
  border: 1px solid var(--c-border);
  padding: 6px 14px;
  border-radius: var(--radius-btn);
  background: rgba(20, 30, 48, 0.5);
  transition: all 0.2s;
}
.btn-about:hover {
  border-color: var(--c-upcoming);
  color: #b8d8f0;
}

/* 隠しカード進捗バー */
.hidden-progress {
  max-width: 720px;
  margin: 0 auto 32px;
  background: rgba(26, 45, 69, 0.7);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-tile);
  padding: 16px 20px;
}

.hidden-progress-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  margin-bottom: 8px;
}

.hidden-progress-label {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--c-text-primary);
  letter-spacing: 0.08em;
}

.hidden-progress-count {
  color: var(--c-accent-kiku);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.05em;
}

.hidden-progress-bar {
  width: 100%;
  height: 6px;
  background: rgba(0,0,0,0.3);
  border-radius: 4px;
  overflow: hidden;
}

.hidden-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--c-upcoming) 0%, var(--c-accent-kiku) 100%);
  transition: width 0.6s ease-out;
}

.hidden-progress-list {
  list-style: none;
  padding: 12px 0 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
}
@media (min-width: 600px) {
  .hidden-progress-list { grid-template-columns: 1fr 1fr; }
}
.hidden-progress-item {
  font-size: 11px;
  color: var(--c-text-muted);
  letter-spacing: 0.04em;
}
.hidden-progress-item.is-unlocked {
  color: var(--c-accent-kiku);
}
.hidden-progress-item.is-unlocked::before { content: "✓ "; color: var(--c-accent-kiku); }
.hidden-progress-item:not(.is-unlocked)::before { content: "◯ "; color: var(--c-text-muted); }

/* タイルグリッド */
.seasons-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
}
@media (min-width: 600px) {
  .seasons-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
}
@media (min-width: 1024px) {
  .seasons-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
  }
}

.season-tile {
  position: relative;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-tile);
  overflow: hidden;
  background: var(--c-surface);
  box-shadow: var(--shadow-tile-default);
  cursor: pointer;
  transition: transform 0.25s, box-shadow 0.25s, filter 0.25s;
  border-left: 3px solid transparent;
}

.season-tile.active { border-left-color: var(--c-active); }
.season-tile.upcoming { border-left-color: var(--c-upcoming); }
.season-tile.waiting {
  border-left-color: var(--c-waiting);
  filter: saturate(0.55);
}
.season-tile.active:hover,
.season-tile.active:focus-visible {
  transform: translateY(-4px);
  box-shadow: var(--shadow-tile-active-hover);
}
.season-tile.upcoming:hover,
.season-tile.upcoming:focus-visible {
  transform: translateY(-4px);
  box-shadow: var(--shadow-tile-upcoming-hover);
}
.season-tile.waiting:hover {
  filter: saturate(0.75);
  transform: translateY(-2px);
}
.season-tile:focus-visible { outline: none; box-shadow: var(--focus-ring); }

.season-tile-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.60;
  transition: opacity 0.3s;
}
.season-tile:hover .season-tile-photo { opacity: 0.78; }

.season-tile-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 12px 12px 14px;
  background: linear-gradient(to top, rgba(13,27,46,0.95) 0%, rgba(13,27,46,0.6) 60%, transparent 100%);
}

.season-tile-name {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  color: var(--c-text-primary);
  margin-bottom: 6px;
  line-height: 1.3;
  text-shadow: 0 1px 4px rgba(0,0,0,0.7);
}
@media (min-width: 600px) {
  .season-tile-name { font-size: 15px; }
}

.season-tile-period {
  font-size: 10px;
  color: var(--c-text-muted);
  margin-bottom: 6px;
  letter-spacing: 0.04em;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: var(--radius-badge);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.status-badge.active   { background: var(--c-active);   color: #fff; }
.status-badge.upcoming { background: var(--c-upcoming); color: #fff; }
.status-badge.waiting  { background: var(--c-waiting);  color: var(--c-text-body); }

.season-tile.is-opened::after {
  content: "✓";
  position: absolute;
  top: 8px;
  right: 8px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(201, 150, 58, 0.95);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

/* 次の解禁予告バナー */
.next-banner {
  max-width: 640px;
  margin: 40px auto 0;
  padding: 18px 24px;
  background: linear-gradient(135deg, rgba(37,99,168,0.25) 0%, rgba(26,45,69,0.6) 100%);
  border: 1px solid var(--c-upcoming);
  border-radius: var(--radius-tile);
  text-align: center;
}
.next-banner-label {
  font-size: 11px;
  color: var(--c-upcoming-text);
  letter-spacing: 0.18em;
  margin-bottom: 6px;
}
.next-banner-text {
  font-family: var(--font-heading);
  font-size: clamp(14px, 2vw, 16px);
  color: var(--c-text-primary);
  font-weight: 700;
}

/* フッター */
.app-footer {
  max-width: 720px;
  margin: 56px auto 0;
  padding: 32px 16px 8px;
  text-align: center;
  border-top: 1px solid var(--c-border);
}
.footer-title {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 700;
  color: var(--c-text-primary);
  margin-bottom: 4px;
}
.footer-sub {
  font-family: var(--font-heading);
  font-size: 12px;
  color: var(--c-text-body);
  letter-spacing: 0.1em;
  margin-bottom: 18px;
}
.footer-hr {
  width: 60%;
  max-width: 200px;
  border: none;
  border-top: 1px solid var(--c-border);
  margin: 16px auto;
}
.footer-note {
  font-size: 11px;
  color: var(--c-text-muted);
  line-height: 1.7;
  margin-bottom: 6px;
}
.footer-copyright {
  font-size: 11px;
  color: var(--c-text-muted);
  margin-top: 12px;
}

/* ============================================================
   モーダル共通
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(7, 14, 26, 0.85);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
  animation: overlayFade 0.25s ease-out;
}
@keyframes overlayFade {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.modal {
  position: relative;
  width: 100%;
  max-width: 560px;
  max-height: 88vh;
  overflow-y: auto;
  background: var(--c-surface);
  border-radius: var(--radius-modal);
  padding: 28px 22px 24px;
  border: 1px solid var(--c-border);
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
  animation: modalRise 0.3s ease-out;
}
@keyframes modalRise {
  from { opacity: 0; transform: translateY(20px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-close {
  position: absolute;
  top: 10px;
  right: 12px;
  width: 36px;
  height: 36px;
  font-size: 22px;
  color: var(--c-text-body);
  background: rgba(0,0,0,0.25);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  transition: background 0.2s;
}
.modal-close:hover { background: rgba(255,255,255,0.1); color: var(--c-text-primary); }
.modal-close:focus-visible { outline: none; box-shadow: var(--focus-ring); }

.modal-title {
  font-family: var(--font-heading);
  font-size: clamp(20px, 3vw, 24px);
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--c-text-primary);
  letter-spacing: 0.04em;
  padding-right: 36px;
}

.modal-body { color: var(--c-text-body); }

.modal-row {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--c-border);
  font-size: 13px;
}
.modal-label {
  flex-shrink: 0;
  width: 80px;
  color: var(--c-text-muted);
  font-weight: 700;
  letter-spacing: 0.06em;
}
.modal-value {
  color: var(--c-text-primary);
}

.modal-description {
  font-size: 14px;
  line-height: 1.8;
  margin: 16px 0 12px;
  color: var(--c-text-body);
}

.modal-photo {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-btn);
  margin-bottom: 12px;
  background: var(--c-surface-raised);
}

.modal-tip {
  background: rgba(201, 150, 58, 0.12);
  border-left: 3px solid var(--c-accent-kiku);
  padding: 12px 14px;
  border-radius: 6px;
  margin: 16px 0;
}
.modal-tip-label {
  font-size: 11px;
  color: var(--c-accent-kiku);
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}
.modal-tip-text {
  font-size: 13px;
  color: var(--c-text-primary);
  line-height: 1.8;
}

.modal-cta { margin: 16px auto 12px; }

/* ============================================================
   モーダル B: クイズ
   ============================================================ */
.quiz-meta {
  font-size: 11px;
  color: var(--c-text-muted);
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}

.quiz-question {
  font-family: var(--font-heading);
  font-size: clamp(16px, 2.5vw, 19px);
  font-weight: 400;
  line-height: 1.7;
  color: var(--c-text-primary);
  margin: 16px 0 20px;
  text-align: center;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 420px;
  margin: 0 auto;
}

.quiz-option {
  min-height: 56px;
  padding: 14px 20px;
  background: var(--c-surface-raised);
  color: var(--c-text-primary);
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 500;
  text-align: left;
  transition: all 0.2s;
}
.quiz-option:hover {
  border-color: var(--c-upcoming);
  background: rgba(37, 99, 168, 0.15);
  transform: translateY(-1px);
}
.quiz-option:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}
.quiz-option.is-correct {
  background: rgba(29, 158, 122, 0.25);
  border-color: var(--c-accent-summer);
  color: #c5f0df;
}
.quiz-option.is-wrong {
  background: rgba(200, 75, 26, 0.15);
  border-color: var(--c-active);
  color: var(--c-active-text);
}
.quiz-option[disabled] { pointer-events: none; }

.quiz-streak-line {
  text-align: center;
  font-size: 12px;
  color: var(--c-text-muted);
  margin-top: 16px;
  letter-spacing: 0.06em;
}
.quiz-streak-line strong { color: var(--c-accent-kiku); font-size: 14px; }

.quiz-result-flag {
  font-family: var(--font-heading);
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
  letter-spacing: 0.08em;
}
.quiz-result-flag.is-correct { color: var(--c-accent-summer); }
.quiz-result-flag.is-wrong { color: var(--c-active-text); }

/* フリップカード */
.quiz-flip-card {
  perspective: 1200px;
  width: 100%;
  max-width: 380px;
  height: 220px;
  margin: 0 auto 16px;
}

.quiz-flip-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.8s cubic-bezier(0.25, 0.8, 0.3, 1);
}
.quiz-flip-card.is-flipped .quiz-flip-inner { transform: rotateY(180deg); }

.quiz-flip-front, .quiz-flip-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  border-radius: var(--radius-modal);
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.quiz-flip-front {
  background: linear-gradient(135deg, var(--c-bg-deep), var(--c-surface));
  border: 1px solid var(--c-border);
}
.quiz-flip-front-icon {
  font-family: var(--font-heading);
  font-size: 72px;
  font-weight: 300;
  color: var(--c-accent-kiku);
  opacity: 0.5;
}

.quiz-flip-back {
  background: linear-gradient(135deg, var(--c-surface-raised), var(--c-surface));
  border: 1px solid var(--c-accent-kiku);
  transform: rotateY(180deg);
}
.quiz-flip-explanation {
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-text-primary);
}

.quiz-streak-update {
  text-align: center;
  font-family: var(--font-heading);
  font-size: 15px;
  color: var(--c-accent-kiku);
  margin: 8px 0 16px;
  letter-spacing: 0.08em;
}

/* ============================================================
   モーダル C: バッジ解放
   ============================================================ */
.modal-badge { text-align: center; }

.badge-headline {
  font-family: var(--font-heading);
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 700;
  color: var(--c-accent-kiku);
  letter-spacing: 0.12em;
  margin-bottom: 20px;
}

.badge-card {
  background: linear-gradient(135deg, rgba(201,150,58,0.18), rgba(200,75,26,0.12));
  border: 1px solid var(--c-accent-kiku);
  border-radius: var(--radius-modal);
  padding: 24px 16px;
  margin-bottom: 20px;
}

.badge-emoji {
  font-size: 60px;
  margin-bottom: 8px;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.4));
}

.badge-desc {
  font-size: 14px;
  line-height: 1.9;
  color: var(--c-text-body);
  margin-top: 12px;
  white-space: pre-line;
}

/* ============================================================
   モーダル D: About
   ============================================================ */
.modal-about p { font-size: 13px; line-height: 1.9; margin-bottom: 10px; }
.modal-attention-head {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  color: var(--c-accent-kiku);
  margin: 12px 0 6px !important;
}
.record-list {
  list-style: none;
  padding: 0;
  margin: 12px 0;
  background: rgba(0,0,0,0.2);
  border-radius: 8px;
  padding: 12px 16px;
}
.record-list li {
  font-size: 13px;
  padding: 4px 0;
  color: var(--c-text-body);
}
.record-list strong {
  color: var(--c-accent-kiku);
  font-size: 16px;
  margin: 0 4px;
}
.btn-reset { margin-top: 16px; color: var(--c-active-text); border-color: var(--c-active); }
.btn-reset:hover { background: rgba(200,75,26,0.15); }

/* ============================================================
   トースト
   ============================================================ */
.toast {
  position: fixed;
  left: 50%;
  bottom: 32px;
  transform: translateX(-50%);
  padding: 12px 24px;
  background: rgba(26, 45, 69, 0.95);
  border: 1px solid var(--c-border-glow);
  border-radius: 24px;
  font-size: 13px;
  color: var(--c-text-primary);
  z-index: 200;
  animation: toastSlide 0.3s ease-out;
  white-space: nowrap;
  box-shadow: 0 8px 24px rgba(0,0,0,0.6);
}
@keyframes toastSlide {
  from { opacity: 0; transform: translate(-50%, 10px); }
  to   { opacity: 1; transform: translate(-50%, 0); }
}

/* ============================================================
   隠し DOM: 9:16 シェアカード（1080×1920）
   ============================================================ */
.share-card-hidden {
  position: fixed;
  left: -9999px;
  top: 0;
  width: 1080px;
  height: 1920px;
  background: linear-gradient(160deg, #0a1524 0%, #14202e 50%, #1a2d45 100%);
  overflow: hidden;
  z-index: -1;
}
.share-card-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.42;
  filter: brightness(0.7) saturate(1.2);
}
.share-card-content {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 120px 80px;
  text-align: center;
  color: #f0ede8;
  text-shadow: 0 4px 24px rgba(0,0,0,0.85);
}
.share-app {
  font-family: var(--font-heading);
  font-size: 56px;
  font-weight: 700;
  letter-spacing: 0.12em;
  margin-bottom: 30px;
}
.share-divider {
  width: 200px;
  height: 3px;
  background: linear-gradient(90deg, transparent, #c9963a, transparent);
  margin: 40px auto;
}
.share-label {
  font-family: var(--font-heading);
  font-size: 64px;
  font-weight: 400;
  letter-spacing: 0.08em;
  margin-bottom: 30px;
}
.share-number {
  font-family: var(--font-number);
  font-size: 360px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: #ffffff;
  margin-bottom: 20px;
}
.share-unit {
  font-family: var(--font-heading);
  font-size: 64px;
  font-weight: 400;
  margin-bottom: 20px;
}
.share-streak {
  font-size: 48px;
  font-weight: 700;
  color: #f4c99e;
  margin: 30px 0 60px;
  letter-spacing: 0.06em;
}
.share-tip-label {
  font-family: var(--font-heading);
  font-size: 36px;
  font-weight: 400;
  color: #c9963a;
  letter-spacing: 0.12em;
  margin-bottom: 16px;
}
.share-tip {
  font-family: var(--font-heading);
  font-size: 44px;
  font-weight: 400;
  line-height: 1.6;
  color: #f0ede8;
  max-width: 880px;
  margin: 0 auto;
}
.share-hashtag {
  font-size: 36px;
  color: #c8c4bc;
  margin-top: 80px;
  letter-spacing: 0.1em;
}
.share-disclaimer {
  position: absolute;
  bottom: 60px;
  left: 0;
  right: 0;
  font-size: 24px;
  color: #8a8880;
  text-align: center;
}

/* ============================================================
   prefers-reduced-motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .cta-pulse { animation: none !important; }
  .quiz-flip-inner { transition: none !important; }
}

/* ============================================================
   PC （≥1024px）追加調整
   ============================================================ */
@media (min-width: 1024px) {
  .hero-overlay {
    padding: 40px 24px 56px;
  }
  .calendar-section {
    padding: 80px 32px 64px;
  }
  .modal { max-width: 640px; padding: 36px 32px 28px; }
  .modal-photo { height: 260px; }
}