:root {
  color-scheme: dark;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro JP", "Noto Sans JP", sans-serif;
  --bg-main: #0b1020;
  --bg-surface: #0f1629;
  --card-bg: #111827;
  --card-glass: rgba(17, 24, 39, 0.78);
  --border-soft: rgba(148, 163, 184, 0.24);
  --text-main: #e7e9f1;
  --text-muted: #9ea7b8;
  --accent: #0a84ff;
  --accent-soft: rgba(10, 132, 255, 0.16);
  --danger: #ef4d61;
  --admin-accent: #17ebcf;
  --shadow-window: 0 18px 40px rgba(0, 0, 0, 0.28);
  --radius-card: 12px;
  --radius-pill: 999px;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 20px;
  --space-xl: 32px;
  --fz-xs: 12px;
  --fz-sm: 14px;
  --fz-md: 16px;
  --fz-lg: 20px;
  --fz-xl: 28px;
  --header-height: 70px;
  --blur-amount: 18px;
}

[data-theme="light"] {
  color-scheme: light;
  --bg-main: #f5f5f7;
  --bg-surface: #ffffff;
  --card-bg: #ffffff;
  --card-glass: rgba(255, 255, 255, 0.78);
  --border-soft: #e5e7eb;
  --text-main: #111827;
  --text-muted: #6b7280;
  --accent: #0a84ff;
  --accent-soft: rgba(10, 132, 255, 0.12);
  --danger: #e34a5f;
  --admin-accent: #17ebcf;
  --shadow-window: 0 18px 40px rgba(15, 23, 42, 0.16);
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  background: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-family, system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro JP", "Noto Sans JP", sans-serif);
  line-height: 1.7;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.page,
main {
  padding-top: calc(var(--header-height) + var(--space-lg));
}

.page > main {
  display: grid;
  gap: var(--space-xl);
  padding-bottom: var(--space-xl);
}

.news-page #main-content {
  display: grid;
  gap: var(--space-md);
  padding-top: calc(var(--header-height) + var(--space-md));
}
.news-page .section-title {
  margin-bottom: var(--space-sm);
}
.news-page .tabs {
  margin-top: var(--space-xs);
}
.news-page .news-search-bar {
  margin-top: var(--space-xs);
}
.news-page .news-list {
  margin-top: var(--space-sm) !important;
}

.board-page {
  width: min(1200px, 94%);
  margin: 0 auto var(--space-xl);
  display: grid;
  gap: var(--space-xl);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* =========================
   Header (Apple風)
========================= */

#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  display: flex;
  justify-content: center;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-soft);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.04);
  backdrop-filter: blur(var(--blur-amount));
  -webkit-backdrop-filter: blur(var(--blur-amount));
  z-index: 30;
}

/* =========================
   Mega Menu Backdrop (Apple風のモヤッ)
========================= */

.mega-backdrop {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;

  /* 上は薄く、下に行くほど白く＆少し暗くなるグラデーション */
  background: linear-gradient(
    to bottom,
    rgba(245, 245, 247, 0.00) 0%,
    rgba(245, 245, 247, 0.35) 20%,
    rgba(245, 245, 247, 0.65) 55%,
    rgba(15, 23, 42, 0.75) 100%
  );

  /* 背景をしっかりぼかす */
  backdrop-filter: blur(28px) saturate(140%);
  -webkit-backdrop-filter: blur(28px) saturate(140%);

  z-index: 24;            /* ヘッダー(30) > メガメニュー(25) > これ(24) > 本文(0) */
  opacity: 0;
  pointer-events: none;   /* 非表示中はクリック通す */
  transition: opacity 200ms ease;
}

/* 表示状態 */
.mega-backdrop.open {
  opacity: 1;
  pointer-events: auto;   /* 開いてる間は背景クリック不可にする */
}

/* メガメニュー開いてる間はスクロール止める（Apple感UP） */
html.mega-open body {
  overflow: hidden;
}


/* header-inner を 1 行 flex に */
.site-header .header-inner {
  max-width: 1180px;
  width: 100%;
  margin: 0 auto;
  height: 100%;
  padding: 0 var(--space-xl);
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  flex-wrap: nowrap; /* 折り返さない */
}

/* 左：ロゴ */
.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: 16px;
  flex: 0 0 auto;
  color: var(--text-main);
  white-space: nowrap;
}

.logo-text {
  color: var(--text-main);
}

/* 星アイコン */
.logo-mark {
  position: relative;
  display: inline-block;
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  background: linear-gradient(150deg, color-mix(in srgb, var(--accent) 90%, #52b5ff), color-mix(in srgb, var(--accent) 70%, #2d8cff));
  border-radius: 999px;
  box-shadow: 0 0 0 4px var(--accent-soft), 0 10px 18px rgba(0, 0, 0, 0.12);
}

.logo-mark::after {
  content: "";
  position: absolute;
  inset: 4px;
  background: #ffffff;
  clip-path: polygon(50% 5%, 62% 36%, 95% 36%, 68% 55%, 78% 88%, 50% 70%, 22% 88%, 32% 55%, 5% 36%, 38% 36%);
}

.site-header .logo,
.site-header .logo:hover,
.site-header .logo:focus {
  text-decoration: none !important;
}


/* 中央：ナビ */
.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 0;
  flex: 1 1 auto;
  min-width: 0;
  white-space: nowrap;
}

.nav a {
  position: relative;
  padding: 0;
  border-radius: 0;
  color: var(--text-muted);
  font-weight: 400;
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 160ms ease;
}

.nav a:hover {
  color: var(--text-main);
  background: transparent;
  border: none;
}

.nav a.active {
  color: var(--text-main);
}

/* メガメニュー */
.mega-menu {
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--bg-surface);
  border: none;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.04);
  backdrop-filter: blur(var(--blur-amount));
  -webkit-backdrop-filter: blur(var(--blur-amount));
  z-index: 25;
  transform: translateY(-16px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 220ms ease, transform 220ms ease, visibility 220ms;
}

.mega-menu.open {
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
  pointer-events: auto;
}

.mega-inner {
  width: min(960px, 94%);
  margin: 0 auto;
  padding: var(--space-md);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-sm);
  align-items: start;
}

#mega-subjects .mega-inner {
  width: min(820px, 94%);
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.mega-column {
  display: grid;
  gap: 4px;
}

.mega-column:not(:first-child) {
  gap: 2px;
}

.mega-title {
  margin: 0 0 4px;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--text-muted);
}

.mega-column a {
  color: var(--text-main);
  text-decoration: none;
  padding: 1px 0;
  line-height: 1.35;
  font-size: 15px;
  font-weight: 500;
}

.mega-column a:hover {
  text-decoration: none;
  color: var(--accent);
}

.mega-inner .mega-column:first-child a {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
}

.mega-inner .mega-column:first-child a + a {
  margin-top: 4px;
}

/* アクティブ項目の下に細いライン */
.nav a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 2px;
  border-radius: 999px;
  background: var(--accent);
}

.nav-search {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs);
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-soft);
  background: var(--card-bg);
  min-width: auto;
  max-width: 260px;
  flex: 0 0 auto;
}

.nav-search input {
  border: none;
  background: transparent;
  color: var(--text-main);
  font-size: 14px;
  width: 0;
  opacity: 0;
  padding: 0;
  outline: none;
  transition: width 180ms ease, opacity 160ms ease, padding 120ms ease;
}

.search-icon {
  color: var(--text-muted);
}

.nav-search .search-button {
  padding: var(--space-xs);
}

.nav-search.open input,
.nav-search input:focus {
  width: 160px;
  opacity: 1;
  padding: 0 var(--space-sm);
}

.search-button {
  border: none;
  background: transparent;
  color: var(--text-main);
  cursor: pointer;
  padding: var(--space-xs);
  border-radius: var(--radius-pill);
}

.search-button:hover {
  background: var(--accent-soft);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--border-soft);
  background: var(--card-bg);
  border-radius: var(--radius-pill);
  padding: var(--space-xs) var(--space-sm);
  cursor: pointer;
  color: var(--text-main);
}

/* 右：テーマトグル＋管理者ボタン */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex: 0 0 auto;
  margin-left: auto;
  min-width: max-content;
  white-space: nowrap;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs);
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-soft);
  background: var(--card-bg);
  flex-shrink: 0;
}

.toggle-btn {
  padding: var(--space-xs) var(--space-sm);
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: background-color 150ms ease, color 150ms ease, box-shadow 150ms ease;
  white-space: nowrap;
}

.toggle-btn.active {
  background: var(--accent-soft);
  color: var(--text-main);
  border-color: var(--border-soft);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 28%, transparent);
}

/* 管理者モード時（ヘッダーが少し光る） */
.admin-mode #site-header {
  background: linear-gradient(
    120deg,
    color-mix(in srgb, var(--accent) 70%, var(--admin-accent)),
    var(--admin-accent)
  );
  border-bottom: 1px solid color-mix(in srgb, var(--admin-accent) 50%, var(--border-soft));
  box-shadow: var(--shadow-window);
  animation: headerPulse 5s ease-in-out infinite alternate;
}

@keyframes headerPulse {
  from {
    box-shadow: var(--shadow-window);
  }
  to {
    box-shadow: 0 22px 48px rgba(0, 0, 0, 0.22);
  }
}

/* =========================
   Layout / Cards
========================= */

.wrapper {
  width: min(1180px, 92%);
  margin: 0 auto;
}

.hero {
  display: grid;
  gap: var(--space-md);
  align-items: center;
  min-height: 240px;
}

.hero h1 {
  font-size: 32px;
  margin-bottom: var(--space-xs);
}

.hero .hero-actions {
  display: inline-flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-top: var(--space-sm);
}

.page > main > .wrapper {
  margin-top: 0;
}

.glass-card,
.card {
  background: var(--card-bg);
  border-radius: var(--radius-card);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-window);
  padding: var(--space-xl);
  transition: background-color 140ms ease, border-color 140ms ease, color 140ms ease;
}

.glass-card {
  background: var(--card-glass);
  backdrop-filter: blur(var(--blur-amount)) saturate(160%);
  -webkit-backdrop-filter: blur(var(--blur-amount)) saturate(160%);
}

.glass-card:hover,
.card:hover {
  background-color: color-mix(in srgb, var(--card-bg) 95%, var(--accent-soft));
  border-color: color-mix(in srgb, var(--border-soft) 70%, var(--accent));
}

.card-title {
  font-size: var(--fz-md);
  font-weight: 600;
  margin: 0 0 var(--space-xs);
}

.muted,
.subtext {
  color: var(--text-muted);
  font-size: var(--fz-sm);
}

.section-title,
h1,
h2,
h3,
h4 {
  color: var(--text-main);
  margin-top: 0;
}

.section-title {
  font-size: var(--fz-xl);
  margin-bottom: var(--space-sm);
}

.section-heading {
  display: grid;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

/* =========================
   Buttons / Badges
========================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 10px 16px;
  border-radius: var(--radius-pill);
  font-size: var(--fz-sm);
  border: 1px solid var(--border-soft);
  background: var(--card-bg);
  color: var(--text-main);
  cursor: pointer;
  transition: background-color 150ms ease, color 150ms ease, border-color 150ms ease;
}

.btn:hover {
  background: color-mix(in srgb, var(--accent-soft) 40%, var(--card-bg));
  border-color: color-mix(in srgb, var(--border-soft) 70%, var(--accent));
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
  border: 1px solid color-mix(in srgb, var(--accent) 80%, transparent);
}

.btn-primary:hover {
  background: color-mix(in srgb, var(--accent) 92%, #ffffff 8%);
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border-soft);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-size: var(--fz-xs);
  color: var(--text-main);
  background: var(--accent-soft);
  border: 1px solid var(--border-soft);
}

.badge-important {
  background: color-mix(in srgb, var(--danger) 18%, transparent);
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger) 40%, var(--border-soft));
}

.hidden {
  display: none !important;
}

/* =========================
   Forms
========================= */

form {
  display: grid;
  gap: var(--space-md);
}

.form-label {
  font-size: var(--fz-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
  display: block;
}

.form-input,
.form-textarea,
.form-select,
input,
textarea,
select {
  width: 100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border-soft);
  background: color-mix(in srgb, var(--card-bg) 90%, var(--bg-surface));
  color: var(--text-main);
  font-size: var(--fz-md);
  transition: border-color 150ms ease, box-shadow 150ms ease, background-color 150ms ease;
  font-family: inherit;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus,
input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
  background: color-mix(in srgb, var(--card-bg) 95%, var(--accent-soft));
}

.form-textarea,
textarea {
  min-height: 140px;
  resize: vertical;
}

/* =========================
   Grids / Tabs / Chips
========================= */

.news-grid,
.card-grid,
.grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.news-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-sm);
  padding: var(--space-md);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  background: color-mix(in srgb, var(--card-bg) 96%, var(--bg-surface));
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.06);
  text-decoration: none;
  color: inherit;
  transition: background-color 160ms ease, border-color 160ms ease;
}

.news-row:focus,
.news-row:focus-visible,
.news-row:hover {
  text-decoration: none;
}

.news-row:hover {
  background: color-mix(in srgb, var(--card-bg) 90%, var(--accent-soft));
  border-color: color-mix(in srgb, var(--border-soft) 70%, var(--accent));
}

.news-row-title {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex-wrap: wrap;
  font-weight: 600;
}

.news-row-link {
  color: var(--text-main);
  text-decoration: none;
}

.news-row:hover .news-row-link,
.news-row:focus .news-row-link {
  text-decoration: none;
}

.news-row-body {
  margin: var(--space-xs) 0 0;
  color: var(--text-muted);
  line-height: 1.6;
}

.news-row-meta {
  display: grid;
  gap: var(--space-xs);
  align-items: center;
  justify-items: end;
  min-width: 120px;
}

/* BBS 横並びカード */
#bbs-list {
  display: grid;
  gap: var(--space-lg);
}

.tabs {
  display: inline-flex;
  gap: var(--space-xs);
  padding: var(--space-xs);
  border-radius: var(--radius-pill);
  background: var(--card-bg);
  border: 1px solid var(--border-soft);
  width: fit-content;
  max-width: 100%;
}

.tabs button {
  border: none;
  background: transparent;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  cursor: pointer;
  transition: background-color 150ms ease, color 150ms ease;
  min-width: 96px;
  text-align: center;
}

.tabs button.active {
  background: var(--accent-soft);
  color: var(--text-main);
  border: 1px solid var(--border-soft);
}

.news-search-bar {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.news-search-bar input {
  display: none;
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid var(--border-soft);
}

.news-search-bar.open input {
  display: inline-flex;
}

.news-search-bar button {
  border: 1px solid var(--border-soft);
  background: #ffffff;
  border-radius: 10px;
  padding: 8px 10px;
  cursor: pointer;
}

.badge,
.chip {
  font-size: var(--fz-xs);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  background: var(--accent-soft);
  border: 1px solid var(--border-soft);
  color: var(--text-main);
}

/* =========================
   Hero / Slider / Modal
========================= */

.hero,
.slider,
.modal,
.chat-window {
  border-radius: calc(var(--radius-card) + 4px);
  border: 1px solid var(--border-soft);
  background: var(--card-bg);
  box-shadow: var(--shadow-window);
}

.slider-controls button,
.slider-dots button {
  background: var(--card-bg);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-pill);
  color: var(--text-main);
  cursor: pointer;
  transition: background-color 150ms ease, border-color 150ms ease;
}

.slider-dots button.active {
  background: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 80%, transparent);
}

/* =========================
   Footer（縦並び）
========================= */

.footer,
footer {
  background: transparent;
  border-top: 1px solid var(--border-soft); /* 上の細い線だけ */
  margin-top: var(--space-xl);
  padding: var(--space-lg) 0 var(--space-xl);
  color: var(--text-muted);
  font-size: var(--fz-xs);
}

.footer .wrapper {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
  display: flex;
  flex-direction: column;        /* ← 縦並び */
  align-items: flex-start;
  gap: var(--space-md);          /* 各ブロックの間隔 */
}

/* サイト名＋説明 */
.footer .wrapper > div:first-child {
  flex: 0 0 auto;
}

/* メニューリンク */
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--text-main);
  text-decoration: underline;
}

/* SNS リンク */
.sns {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.sns a {
  color: var(--text-muted);
  text-decoration: none;
}

.sns a:hover {
  color: var(--accent);
  text-decoration: underline;
}

/* 一番下の © 表記 */
.footer .muted:last-child {
  margin-top: var(--space-sm);
  display: block;
}

/* スマホ時は左右の余白だけ少し狭く */
@media (max-width: 700px) {
  .footer .wrapper {
    padding: 0 var(--space-lg);
  }
}

/* =========================
   Responsive
========================= */

@media (max-width: 900px) {
  .site-header .header-inner {
    padding: 0 var(--space-sm);
    gap: var(--space-sm);
    justify-content: flex-start;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-soft);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.08);
    z-index: 25;
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    width: 100%;
    padding: var(--space-sm) 0;
  }

  .logo {
    order: 1;
    margin-right: auto;
  }

  .nav-search {
    display: inline-flex;
    order: 2;
    min-width: auto;
    padding: var(--space-xxs, 2px);
    margin-left: var(--space-sm);
  }

  .header-actions {
    order: 3;
    margin-left: var(--space-sm);
  }

  .nav-toggle {
    order: 4;
    margin-left: var(--space-sm);
  }

  .theme-toggle {
    order: 3;
    margin-left: var(--space-sm);
  }

  .wrapper {
    width: 94%;
  }
}

@media (max-width: 600px) {
  .chat-button {
    bottom: var(--space-lg);
    right: var(--space-lg);
  }
}

/* =========================
   Home Slider (Apple風)
========================= */

/* 外側カード */
.slider {
  position: relative;
  overflow: hidden;
  padding: var(--space-xl);
  display: grid;
  gap: var(--space-md);
}

/* 中のトラック・スライド */
.slide-track {
  overflow: hidden;
  border-radius: calc(var(--radius-card) + 4px);
}

.slides {
  display: flex;
  transition: transform 600ms ease;
}

/* 1枚のスライド：左テキスト / 右ビジュアル */
.slide {
  min-width: 100%;
  padding: var(--space-xl);
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(220px, 2fr);
  gap: var(--space-xl);
  align-items: center;
  cursor: pointer;
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--card-bg) 92%, var(--accent-soft)),
    color-mix(in srgb, var(--bg-surface) 90%, #0b1020)
  );
}

/* 左側テキスト */
.slide-text {
  display: grid;
  gap: 6px;
}

.slide-eyebrow {
  font-size: var(--fz-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0;
}

.slide-title {
  font-size: 26px;
  margin: 0;
}

.slide-desc {
  margin: 0;
  color: var(--text-muted);
  max-width: 460px;
}

.slide-cta {
  margin-top: var(--space-sm);
}

/* 右側ビジュアル（丸→カードアート） */
.slide-visual {
  justify-self: end;
  position: relative;
  width: 200px;
  height: 180px;
  display: grid;
  place-items: center;
}

.slide-art {
  width: 170px;
  height: 150px;
  border-radius: 22px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.18);
  background: linear-gradient(160deg, #f8fbff, color-mix(in srgb, var(--accent) 25%, #ffffff));
}

.slide-art::before,
.slide-art::after {
  content: "";
  position: absolute;
}

/* 3D: グラフカード＋影 */
.art-graph3d {
  position: relative;
  background:
    radial-gradient(circle at 30% 25%, rgba(255,255,255,0.18), transparent 35%),
    linear-gradient(145deg, #0f172a, #0a84ff);
  border-radius: 32px;
}

/* 中のミニグラフ */
.art-graph3d::before {
  content: "";
  position: absolute;
  width: 120px;
  height: 80px;
  top: 24px;
  left: 24px;
  border-radius: 18px;

  background:
    /* 折れ線（メイン） */
    linear-gradient(140deg,
      transparent 0 35%,
      rgba(96,165,250,0.0) 35%,
      rgba(96,165,250,0.95) 48%,
      rgba(56,189,248,0.0) 63%,
      transparent 63% 100%
    ),

    /* x軸・y軸 */
    linear-gradient(to right, rgba(148,163,184,0.5), transparent) 16px 70px / 88px 1px no-repeat,
    linear-gradient(to top,   rgba(148,163,184,0.5), transparent) 20px 14px / 1px 60px no-repeat,

    /* 棒グラフ（薄めに2本だけ） */
    linear-gradient(to top, rgba(96,165,250,0.4) 0 75%, transparent 75%) 36% 100% / 9px 60px no-repeat,
    linear-gradient(to top, rgba(56,189,248,0.25) 0 55%, transparent 55%) 62% 100% / 9px 46px no-repeat,

    /* グリッド（かなり薄め） */
    linear-gradient(to right, rgba(148,163,184,0.12) 1px, transparent 1px) 0 0 / 18px 100% repeat-x,
    linear-gradient(to top,  rgba(148,163,184,0.12) 1px, transparent 1px) 0 100% / 100% 18px repeat-y,

    /* パネルベース */
    radial-gradient(circle at 15% 10%, rgba(255,255,255,0.32), transparent 55%),
    linear-gradient(145deg, #020617, #0b1220);

  box-shadow:
    0 0 0 1px rgba(255,255,255,0.12) inset,
    16px 16px 28px rgba(0,0,0,0.32);
}


/* 影（床に落ちてるっぽいやつ）は今まで通り */
.art-graph3d::after {
  content: "";
  position: absolute;
  width: 130px;
  height: 16px;
  bottom: 20px;
  left: 12px;
  border-radius: 50%;
  background: rgba(0,0,0,0.4);
  filter: blur(18px);
}


/* Memo: ノート紙＋薄い行 */
.art-memo {
  background: linear-gradient(160deg, #f5f7ff, #d5e4ff);
}
.art-memo::before {
  inset: 10px;
  border-radius: 14px;
  background:
    linear-gradient(#c5d6ff 3px, transparent 3px),
    linear-gradient(#ffffff 100%, #ffffff);
  background-size: 100% 10px, cover;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.04);
}
.art-memo::after {
  width: 18px;
  height: 100%;
  left: 18px;
  top: 10px;
  background: rgba(255, 180, 180, 0.65);
  opacity: 0.8;
}

/* BBS: 吹き出し＋小さな点 */
.art-bbs {
  background: linear-gradient(145deg, #0a84ff, #7f9cff);
}
.art-bbs::before {
  width: 120px;
  height: 80px;
  top: 18px;
  left: 16px;
  border-radius: 18px;
  background:
    radial-gradient(circle 4px at 24px 32px, #fff 85%, transparent),
    radial-gradient(circle 4px at 48px 50px, #fff 85%, transparent),
    radial-gradient(circle 4px at 72px 36px, #fff 85%, transparent),
    linear-gradient(180deg, rgba(255,255,255,0.2), rgba(255,255,255,0.05));
  box-shadow: 0 0 0 1px rgba(255,255,255,0.22);
}
.art-bbs::after {
  width: 20px;
  height: 20px;
  bottom: 14px;
  right: 18px;
  border-radius: 6px;
  background: #fff;
  box-shadow: -20px 0 0 0 rgba(255,255,255,0.6), -40px 0 0 0 rgba(255,255,255,0.3);
}

.slide-badge {
  position: absolute;
  top: 14px;
  left: 18px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-size: var(--fz-xs);
  color: #0f172a;
  background: rgba(255, 255, 255, 0.9);
}

.slide-emoji {
  font-size: 42px;
}

/* BBS 管理者スター（CSSアート） */
.admin-star {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-left: 6px;
  width: 20px;
  height: 20px;
  position: relative;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.25));
}

.admin-star::before,
.admin-star::after {
  content: "";
  position: absolute;
  inset: 0;
  background: conic-gradient(
    from 230deg,
    #8ae0ff,
    #b6f0ff,
    #0a84ff,
    #7fb6ff,
    #8ae0ff
  );
  clip-path: polygon(
    50% 0%,
    63% 38%,
    100% 38%,
    70% 60%,
    82% 100%,
    50% 78%,
    18% 100%,
    30% 60%,
    0% 38%,
    37% 38%
  );
}

.admin-star::after {
  inset: 4px;
  background: linear-gradient(145deg, rgba(255,255,255,0.92), rgba(255,255,255,0.3));
  clip-path: polygon(
    50% 0%,
    63% 38%,
    100% 38%,
    70% 60%,
    82% 100%,
    50% 78%,
    18% 100%,
    30% 60%,
    0% 38%,
    37% 38%
  );
}

/* コントロール：左右ボタン & ドット */
.slider-controls {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-xs);
}

.slider-controls button {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  border: 1px solid var(--border-soft);
  background: color-mix(in srgb, var(--card-bg) 96%, var(--bg-surface));
  color: var(--text-main);
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 18px;
  line-height: 1;
}

.slider-controls button:hover {
  background: var(--accent-soft);
}

.slider-dots {
  display: flex;
  gap: 6px;
  justify-content: center;
}

.slider-dots button {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  border: none;
  background: color-mix(in srgb, var(--text-muted) 40%, transparent);
  cursor: pointer;
}

.slider-dots button.active {
  width: 18px;
  background: var(--accent);
}

/* スマホ対応 */
@media (max-width: 800px) {
  .slider {
    padding: var(--space-lg);
  }

  .slide {
    padding: var(--space-lg);
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .slide-visual {
    justify-self: center;
    width: 180px;
    height: 160px;
  }

  .slide-title {
    font-size: 22px;
  }
}