:root {
  --bg-deep: oklch(8% 0.025 258);
  --bg-mid: oklch(14% 0.04 260);
  --bg-card: oklch(17% 0.035 258);
  /* バンドボックスの面色。エリアごとに色相を回す(下記 body[data-region] で上書き) */
  --surface: oklch(17% 0.035 258);
  --surface-row: oklch(14% 0.03 258 / 0.7);
  --surface-input: oklch(14% 0.03 258 / 0.8);
  --fg: oklch(97% 0.008 80);
  --muted: oklch(72% 0.015 80);
  --dim: oklch(54% 0.02 80);
  --gold: oklch(83% 0.09 92);
  --gold-d: oklch(63% 0.09 80);
  --gold-deep: oklch(50% 0.08 75);
  --gold-grad: linear-gradient(170deg, oklch(89% 0.07 95) 0%, oklch(78% 0.1 88) 45%, oklch(62% 0.1 78) 100%);
  --red: oklch(60% 0.22 28);
  --hairline: oklch(55% 0.04 250 / 0.22);
  --font-display: "Inter", "Helvetica Neue", system-ui, sans-serif;
  --font-en: "Cinzel", "Inter", serif;
  --font-serif: "Shippori Mincho B1", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-jp: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
}

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

body {
  /* スポットライト(光条)は全エリア共通。地色はエリアカラー変数のみで変わる */
  --beams:
    conic-gradient(from 200deg at 25% -8%, transparent 0deg, oklch(75% 0.09 85 / 0.2) 8deg, transparent 17deg),
    conic-gradient(from 152deg at 75% -8%, transparent 0deg, oklch(75% 0.09 85 / 0.2) 8deg, transparent 17deg),
    conic-gradient(from 174deg at 50% -12%, transparent 0deg, oklch(80% 0.08 88 / 0.26) 7deg, transparent 15deg),
    conic-gradient(from 188deg at 38% -10%, transparent 0deg, oklch(72% 0.08 85 / 0.13) 6deg, transparent 13deg),
    conic-gradient(from 165deg at 62% -10%, transparent 0deg, oklch(72% 0.08 85 / 0.13) 6deg, transparent 13deg);
  --tint-glow: oklch(20% 0.06 260);
  --tint-hi: oklch(8% 0.025 258);
  --tint-mid: oklch(6% 0.02 250);
  --tint-lo: oklch(5% 0.018 250);
  background:
    var(--beams),
    radial-gradient(130% 70% at 50% 0%, var(--tint-glow) 0%, transparent 65%),
    linear-gradient(180deg, var(--tint-hi) 0%, var(--tint-mid) 70%, var(--tint-lo) 100%);
  background-color: var(--tint-hi);
  color: var(--fg);
  font-family: var(--font-jp);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* エリアカラー: 北=深緑 / 東=紺(デフォルト) / 西=深紅。地色の変数だけ差し替える */
body[data-region="north"] {
  --tint-glow: oklch(24% 0.11 160);
  --tint-hi: oklch(11% 0.055 162);
  --tint-mid: oklch(8% 0.042 160);
  --tint-lo: oklch(6.5% 0.035 158);
  --surface: oklch(18% 0.045 165);
  --surface-row: oklch(15% 0.038 165 / 0.72);
  --surface-input: oklch(15% 0.038 165 / 0.82);
}

body[data-region="west"] {
  --tint-glow: oklch(24% 0.14 27);
  --tint-hi: oklch(11% 0.07 27);
  --tint-mid: oklch(8% 0.055 25);
  --tint-lo: oklch(6.5% 0.045 23);
  --surface: oklch(18% 0.055 27);
  --surface-row: oklch(15% 0.045 27 / 0.72);
  --surface-input: oklch(15% 0.045 27 / 0.82);
}

/* 固定グレイン: 暗背景のフラットさを抑える */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 200;
  opacity: 0.035;
  background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="180" height="180"><filter id="n"><feTurbulence type="fractalNoise" baseFrequency="0.9" numOctaves="2"/></filter><rect width="100%25" height="100%25" filter="url(%23n)"/></svg>');
  background-size: 180px 180px;
}

.sample-banner {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--red);
  color: #fff;
  text-align: center;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 6px 12px;
}

/* ============ Hero ============ */
.hero {
  text-align: center;
  padding: 64px 20px 44px;
  background: radial-gradient(60% 40% at 50% 30%, oklch(60% 0.08 85 / 0.07) 0%, transparent 70%);
  position: relative;
}

.hero .back {
  position: absolute;
  left: 16px;
  top: 18px;
  color: var(--gold-d);
  text-decoration: none;
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
}
.hero .back i { font-style: normal; margin-right: 2px; }
.hero .back:hover { color: var(--gold); }

.hero-logo {
  width: min(280px, 64vw);
  height: auto;
  display: block;
  margin: 0 auto 18px;
}

.hero-round {
  font-family: var(--font-en);
  font-size: clamp(11px, 3vw, 16px);
  font-weight: 700;
  letter-spacing: 0.3em;
  color: var(--gold);
  text-transform: uppercase;
  white-space: nowrap;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(36px, 9.5vw, 60px);
  font-weight: 800;
  letter-spacing: 0.18em;
  line-height: 1.2;
  margin: 10px 0 22px;
  color: var(--fg);
  text-wrap: balance;
}

.hero-title::after {
  content: "";
  display: block;
  width: 64px;
  height: 1px;
  margin: 22px auto 0;
  background: var(--gold-grad);
}

.hero-lead {
  font-size: clamp(13px, 3.4vw, 15px);
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto;
  white-space: pre-line;
}

/* ============ Region nav ============ */
.region-nav {
  position: sticky;
  top: 0;
  z-index: 90;
  display: flex;
  justify-content: center;
  gap: 6px;
  padding: 10px 12px;
  background: oklch(8% 0.025 258 / 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--hairline);
}

.sample-banner:not([hidden]) ~ .region-nav { top: 30px; }

.region-tab {
  appearance: none;
  border: 1px solid oklch(63% 0.09 80 / 0.35);
  background: transparent;
  color: var(--gold-d);
  font-family: var(--font-jp);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 7px 16px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.18s ease;
  white-space: nowrap;
}

.region-tab .tab-sub {
  display: block;
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--dim);
}

.region-tab:hover {
  color: var(--fg);
  border-color: var(--gold-d);
}

.region-tab:active { transform: scale(0.98); }

.region-tab:focus-visible,
.passed-search input:focus-visible,
.band-x a:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.region-tab.active {
  background: var(--gold-grad);
  border-color: var(--gold);
  color: oklch(20% 0.04 80);
}

.region-tab.active:hover { color: oklch(20% 0.04 80); }

.region-tab.active .tab-sub { color: oklch(32% 0.06 80); }

/* ============ Region section ============ */
main {
  max-width: 880px;
  margin: 0 auto;
  padding: 40px 16px 84px;
}

.region-section[hidden] { display: none; }

.region-header {
  text-align: center;
  margin: 26px 0 38px;
}

.region-header h2 {
  font-family: var(--font-serif);
  font-size: clamp(26px, 6.4vw, 38px);
  font-weight: 800;
  letter-spacing: 0.16em;
  text-wrap: balance;
}

.load-error {
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  padding: 60px 20px;
}

.region-header .region-sub {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold-d);
  font-weight: 700;
}

.block-label {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 54px 0 24px;
}

.block-label::before,
.block-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, oklch(63% 0.09 80 / 0.45));
}

.block-label::after {
  background: linear-gradient(90deg, oklch(63% 0.09 80 / 0.45), transparent);
}

.block-label span {
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.34em;
  color: var(--gold);
  text-transform: uppercase;
  white-space: nowrap;
}

.block-label span::before { content: "◆"; font-size: 7px; vertical-align: 3px; margin-right: 14px; color: var(--gold-d); }
.block-label span::after { content: "◆"; font-size: 7px; vertical-align: 3px; margin-left: 14px; color: var(--gold-d); }

/* ============ Rank 1 hero card ============ */
.rank-hero {
  position: relative;
  background:
    linear-gradient(160deg, oklch(22% 0.05 80 / 0.5), var(--surface) 55%) padding-box,
    var(--gold-grad) border-box;
  border: 1px solid transparent;
  border-radius: 18px;
  overflow: hidden;
  text-align: center;
  padding: 34px 22px 32px;
  margin-bottom: 18px;
  box-shadow: 0 14px 44px oklch(70% 0.1 85 / 0.1);
}

.rank-hero .rank-badge {
  position: absolute;
  top: 0;
  left: 0;
  background: var(--gold-grad);
  color: oklch(20% 0.04 80);
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 18px;
  padding: 8px 20px;
  border-bottom-right-radius: 14px;
}

.rank-hero .band-photo {
  width: min(420px, 100%);
  aspect-ratio: 16 / 10;
  border-radius: 12px;
  margin: 14px auto 16px;
}

.rank-hero .band-name {
  font-family: var(--font-serif);
  font-size: clamp(24px, 6.4vw, 32px);
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 1.35;
}

.rank-hero .band-circle { font-size: 14px; color: var(--muted); margin-top: 2px; }

/* ============ Rank 2-3 cards ============ */
.rank-duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 14px;
}

.rank-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 14px;
  overflow: hidden;
  text-align: center;
  padding: 18px 12px 16px;
}

.rank-card .rank-badge {
  position: absolute;
  top: 0;
  left: 0;
  background: oklch(30% 0.05 258);
  color: var(--gold);
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 14px;
  padding: 5px 14px;
  border-bottom-right-radius: 12px;
  border-right: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}

.rank-card .band-photo {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: 9px;
  margin: 16px auto 10px;
}

.rank-card .band-name {
  font-family: var(--font-serif);
  font-size: clamp(15px, 4vw, 19px);
  font-weight: 800;
  line-height: 1.35;
}

.rank-card .band-circle { font-size: 12px; color: var(--muted); }

/* ============ Rank 4-10 rows ============ */
.rank-rows { display: flex; flex-direction: column; gap: 8px; }

.rank-row {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--surface-row);
  border: 1px solid var(--hairline);
  border-radius: 12px;
  padding: 10px 14px 10px 10px;
}

.rank-row .row-rank {
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 17px;
  font-variant-numeric: tabular-nums;
  color: var(--gold-d);
  min-width: 2.2em;
  text-align: center;
  flex-shrink: 0;
}

.rank-row,
.passed-row {
  transition: border-color 0.2s ease;
}

.rank-row:hover,
.passed-row:hover {
  border-color: oklch(85% 0.15 88 / 0.45);
}

.rank-row .band-photo {
  width: 52px;
  height: 52px;
  border-radius: 10px;
  flex-shrink: 0;
}

.rank-row .row-info { flex: 1; min-width: 0; }

.rank-row .band-name {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.rank-row .band-circle { font-size: 11.5px; color: var(--muted); }

.rank-row .band-x { flex-shrink: 0; }

/* ============ Passed list (50-100バンド想定の高密度表示) ============ */
.label-count {
  font-style: normal;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: oklch(18% 0.04 80);
  background: var(--gold-d);
  border-radius: 999px;
  padding: 2px 9px;
  margin-left: 10px;
  vertical-align: 2px;
}

/* ============ 検索・絞り込み・並び替えツールバー ============ */
.region-tools {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 4px 0 6px;
}

.tools-search {
  width: 100%;
  appearance: none;
  background: var(--surface-input);
  border: 1px solid var(--hairline);
  border-radius: 10px;
  color: var(--fg);
  font-family: var(--font-jp);
  font-size: 14px;
  padding: 10px 14px;
  outline: none;
}

.tools-search:focus { border-color: var(--gold-d); }
.tools-search::placeholder { color: var(--dim); }

.tools-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.grade-chip {
  appearance: none;
  background: transparent;
  border: 1px solid oklch(63% 0.09 80 / 0.4);
  border-radius: 999px;
  color: var(--gold-d);
  font-family: var(--font-jp);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 5px 12px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.grade-chip:hover { color: var(--fg); border-color: var(--gold-d); }
.grade-chip:active { transform: scale(0.97); }

.grade-chip.active {
  background: var(--gold-grad);
  border-color: var(--gold);
  color: oklch(20% 0.04 80);
}

.grade-chip:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.tools-sort {
  font-size: 11.5px;
  color: var(--muted);
}

.tools-sort label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.04em;
}

.tools-sort select {
  appearance: none;
  background: var(--surface-input);
  border: 1px solid var(--hairline);
  border-radius: 8px;
  color: var(--fg);
  font-family: var(--font-jp);
  font-size: 12px;
  padding: 5px 10px;
  outline: none;
  cursor: pointer;
}

.tools-sort select:focus-visible { border-color: var(--gold-d); }

.region-empty {
  color: var(--muted);
  font-size: 13px;
  text-align: center;
  padding: 26px 0 8px;
}

.band-item[hidden] { display: none !important; }

.passed-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 6px;
}

.passed-row {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface-row);
  border: 1px solid var(--hairline);
  border-radius: 10px;
  padding: 7px 10px 7px 7px;
  min-width: 0;
}

.passed-row[hidden] { display: none; }

.passed-row .band-photo,
.passed-row .band-photo.placeholder {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  flex-shrink: 0;
  font-size: 13px;
  letter-spacing: 0;
}

.passed-row .row-info { flex: 1; min-width: 0; }

.passed-row .band-name {
  font-size: 13px;
  font-weight: 700;
  line-height: 1.3;
  overflow-wrap: anywhere;
}

.passed-row .band-circle {
  font-size: 10.5px;
  color: var(--muted);
  display: inline;
}

.passed-row .band-x {
  display: inline-flex;
  margin-top: 2px;
}

.passed-row .band-x a { width: 26px; height: 26px; }
.passed-row .band-x svg { width: 13px; height: 13px; }
.passed-row .band-yt { width: 24px; height: 24px; }
.passed-row .band-yt svg { width: 21px; height: 21px; }

/* ============ Shared: 大学名ラベル ============ */
.band-univ {
  color: var(--gold-d);
  font-weight: 700;
  margin-right: 0.5em;
}

/* ============ Shared: 学年構成(バッジ表示)============ */
.band-grades {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 5px;
}

.grade-badge {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-display);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1;
  color: var(--fg);
  background: oklch(20% 0.03 258);
  border: 1px solid var(--hairline);
  border-radius: 6px;
  padding: 4px 9px 4px 7px;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.15s ease;
}

/* 学年カラードット */
.grade-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  flex-shrink: 0;
}

.grade-badge[data-key="1"] .grade-dot { background: oklch(82% 0.14 95); }   /* 1年 黄金 */
.grade-badge[data-key="2"] .grade-dot { background: oklch(70% 0.14 145); }  /* 2年 緑 */
.grade-badge[data-key="3"] .grade-dot { background: oklch(72% 0.15 230); }  /* 3年 青 */
.grade-badge[data-key="4"] .grade-dot { background: oklch(70% 0.18 30); }   /* 4年 赤 */
.grade-badge[data-key="5+"] .grade-dot { background: oklch(66% 0.16 300); } /* 5年以上 紫 */
.grade-badge[data-key="社会人"] .grade-dot { background: oklch(62% 0.02 80); } /* 社会人 灰 */

.grade-badge:hover { border-color: var(--gold-d); }
.grade-badge:active { transform: scale(0.96); }

.grade-badge.active {
  background: var(--gold-grad);
  border-color: var(--gold);
  color: oklch(20% 0.04 80);
}

.grade-badge.active .grade-dot { background: oklch(20% 0.04 80); }

.grade-badge:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

/* 中央寄せカード(1〜3位)はバッジも中央に */
.rank-hero .band-grades,
.rank-card .band-grades { justify-content: center; }

.rank-hero .grade-badge { font-size: 12px; padding: 5px 10px; }

/* 小さい行・通過カードはコンパクトに */
.passed-row .grade-badge { font-size: 9.5px; padding: 3px 6px; border-radius: 5px; }
.rank-row .grade-badge { font-size: 10px; padding: 3px 7px; }

/* ============ Shared: photo / X ============ */
.band-photo {
  display: block;
  object-fit: cover;
  background: oklch(24% 0.04 258);
}

.band-photo.placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 900;
  color: var(--gold-d);
  font-size: 22px;
  letter-spacing: 0.05em;
  user-select: none;
}

.band-x a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  color: var(--gold);
  text-decoration: none;
  transition: background 0.15s ease;
}

.band-x a:hover { background: oklch(63% 0.09 80 / 0.16); }

.band-x svg { width: 15px; height: 15px; fill: currentColor; flex-shrink: 0; }

/* ============ 行末 YouTube アイコン(案2)============ */
.band-yt {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  align-self: center;
}

.band-yt svg {
  width: 24px;
  height: 24px;
  fill: oklch(58% 0.21 28);
  transition: fill 0.15s ease, transform 0.15s ease;
}

.clickable:hover .band-yt svg {
  fill: oklch(64% 0.23 28);
  transform: scale(1.08);
}

/* ============ YouTube クリック導線 ============ */
.clickable { cursor: pointer; }

.clickable:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

/* 1〜3位カードのアクション行: X アイコン + 動画を見るボタンを横並び中央寄せ */
.card-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 14px;
}

.card-actions .band-x { margin: 0; }

.watch-hint {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--gold);
  border: 1px solid oklch(63% 0.09 80 / 0.45);
  border-radius: 999px;
  padding: 6px 16px;
  transition: all 0.2s ease;
}

.clickable:hover .watch-hint {
  background: var(--gold-grad);
  color: oklch(20% 0.04 80);
  border-color: var(--gold);
}

/* ============ モーダルプレイヤー ============ */
#player-modal {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
}

#player-modal[hidden] { display: none; }

.player-backdrop {
  position: absolute;
  inset: 0;
  background: oklch(4% 0.015 255 / 0.82);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.player-dialog {
  position: relative;
  width: min(720px, 100%);
}

.player-frame {
  aspect-ratio: 16 / 9;
  border-radius: 14px;
  overflow: hidden;
  background: #000;
  border: 1px solid oklch(63% 0.09 80 / 0.5);
  box-shadow: 0 24px 80px oklch(0% 0 0 / 0.6);
}

.player-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.player-caption {
  text-align: center;
  margin-top: 12px;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--fg);
}

.player-close {
  position: absolute;
  top: -42px;
  right: 0;
  appearance: none;
  background: transparent;
  border: 1px solid oklch(63% 0.09 80 / 0.5);
  border-radius: 50%;
  width: 34px;
  height: 34px;
  color: var(--gold);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.18s ease;
}

.player-close:hover {
  background: var(--gold-grad);
  color: oklch(20% 0.04 80);
}

.player-close:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: no-preference) {
  #player-modal:not([hidden]) .player-dialog {
    animation: pop 0.25s ease both;
  }
  @keyframes pop {
    from { opacity: 0; transform: scale(0.96); }
    to { opacity: 1; transform: none; }
  }
}

/* ============ Footer ============ */
.footer {
  text-align: center;
  padding: 30px 16px 44px;
  border-top: 1px solid var(--hairline);
  color: var(--dim);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.footer-sub { font-size: 10.5px; margin-top: 2px; }

/* ============ Mobile tweaks ============ */
@media (max-width: 480px) {
  .hero { padding-top: 36px; }
  .rank-duo { grid-template-columns: 1fr 1fr; gap: 10px; }
  .passed-list { grid-template-columns: 1fr 1fr; }
  .passed-row .band-circle { display: block; }
  .passed-row .band-x { display: inline-flex; }
}

/* ============ Reveal animation ============ */
@media (prefers-reduced-motion: no-preference) {
  .region-section > * {
    animation: rise 0.5s ease both;
  }
  @keyframes rise {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: none; }
  }
}

.footer-link { margin-top: 8px; }
.footer-link a { color: var(--gold-d); text-decoration: none; font-size: 11.5px; letter-spacing: 0.04em; border-bottom: 1px solid transparent; }
.footer-link a:hover { color: var(--gold); border-bottom-color: var(--gold-d); }


/* トップへ戻る フローティングボタン */
#to-top { position: fixed; right: 16px; bottom: 18px; z-index: 120; width: 46px; height: 46px; border-radius: 50%; border: 1px solid oklch(63% 0.09 80 / 0.5); background: oklch(12% 0.03 258 / 0.92); color: var(--gold); font-size: 15px; cursor: pointer; opacity: 0; transform: translateY(12px); pointer-events: none; transition: opacity 0.2s ease, transform 0.2s ease; backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
#to-top.show { opacity: 1; transform: none; pointer-events: auto; }
#to-top:hover { background: var(--gold-grad); color: oklch(20% 0.04 80); }
#to-top:active { transform: scale(0.94); }
#to-top:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }