/* Aether Arena 公式HP。夜の星空の紺と紫に、ゲームと同じ金の見出し（Cinzel）。 */
:root {
  --bg: #0a0b1a;
  --bg-alt: #0f1126;
  --panel: #161935;
  --panel-2: #1d2145;
  --line: rgba(232, 207, 138, 0.22);
  --line-soft: rgba(190, 196, 255, 0.14);
  --fg: #eceaf7;
  --muted: #a9a8c8;
  --gold: #e8cf8a;
  --gold-deep: #c9a24e;
  --violet: #9b8cff;
  --display: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --latin: "Cinzel", "Shippori Mincho", serif;
  --body: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", sans-serif;
  --head-h: 60px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--head-h) + 12px); }
body { margin: 0; background: var(--bg); color: var(--fg); font: 400 16px/1.9 var(--body); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--gold); }
button { font: inherit; color: inherit; cursor: pointer; -webkit-appearance: none; appearance: none; background: transparent; }
h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; padding: 0; }
ul, ol { list-style: none; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 4px; }
.skip { position: absolute; left: -999px; top: 0; background: var(--gold); color: #1a1530; padding: 8px 14px; z-index: 100; }
.skip:focus { left: 8px; top: 8px; }
.wrap { width: min(1120px, 100%); margin-inline: auto; padding-inline: max(20px, env(safe-area-inset-left)) max(20px, env(safe-area-inset-right)); }
.sp { display: none; }

/* ヘッダー */
.site-head { position: fixed; inset: 0 0 auto 0; height: var(--head-h); z-index: 50; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-inline: max(16px, env(safe-area-inset-left)) max(16px, env(safe-area-inset-right)); background: rgba(10, 11, 26, 0.9); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--line-soft); }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--gold); font: 700 17px/1 var(--latin); letter-spacing: .12em; white-space: nowrap; }
.brand img { border-radius: 8px; }
.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav a { color: var(--fg); text-decoration: none; font: 500 12px/1.2 var(--latin); letter-spacing: .14em; padding: 8px 10px; text-align: center; border-radius: 6px; }
.site-nav a small { display: block; font: 400 10px/1.4 var(--body); letter-spacing: .08em; color: var(--muted); }
.site-nav a:hover { color: var(--gold); }
.site-nav .nav-cta { margin-left: 8px; font: 700 13px/1 var(--body); letter-spacing: .06em; color: #1b1630; background: linear-gradient(180deg, #f3e0a6, var(--gold-deep)); padding: 11px 18px; border-radius: 999px; }
.site-nav .nav-cta:hover { color: #1b1630; filter: brightness(1.08); }
.sound { -webkit-appearance: none; appearance: none; margin-left: auto; display: inline-flex; align-items: flex-end; gap: 2px; height: 40px; padding: 0 12px 13px; border: 1px solid var(--line-soft); border-radius: 999px; background: none; color: var(--muted); }
.sound i { width: 3px; height: 4px; border-radius: 2px; background: currentColor; }
.sound span { margin-left: 6px; font: 700 11px/1 var(--latin); letter-spacing: .14em; }
.sound[aria-pressed="true"] { color: var(--gold); border-color: var(--line); }
.sound[aria-pressed="true"] i { animation: eq 1s ease-in-out infinite alternate; }
.sound[aria-pressed="true"] i:nth-child(2) { animation-delay: -.4s; }
.sound[aria-pressed="true"] i:nth-child(3) { animation-delay: -.7s; }
.sound[aria-pressed="true"] i:nth-child(4) { animation-delay: -.2s; }
@keyframes eq { from { height: 4px; } to { height: 14px; } }
.site-nav { margin-left: 4px; }
.nav-toggle { display: none; width: 44px; height: 44px; background: none; border: 0; padding: 12px 10px; }
.nav-toggle i { display: block; height: 2px; background: var(--gold); margin: 5px 0; transition: transform .25s, opacity .25s; }
.nav-toggle[aria-expanded="true"] i:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] i:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ヒーロー */
.hero { position: relative; min-height: 100svh; display: grid; place-items: center; text-align: center; overflow: hidden; isolation: isolate; }
.hero-bg { position: absolute; inset: -4% -2%; z-index: -3; background: url(assets/ui/keyvisual.webp) center 38% / cover no-repeat; animation: drift 40s ease-in-out infinite alternate; }
.hero::after { content: ""; position: absolute; inset: 0; z-index: -1; background: radial-gradient(ellipse 70% 55% at 50% 46%, rgba(10, 11, 26, .5), transparent 70%), linear-gradient(180deg, rgba(10, 11, 26, .5) 0%, transparent 22%, transparent 60%, var(--bg) 100%); }
.hero-stars { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -2; }
@keyframes drift { from { transform: scale(1.02) translateY(0); } to { transform: scale(1.08) translateY(-1.5%); } }
.hero-inner { min-width: 0; padding: calc(var(--head-h) + 24px) 20px 96px; width: min(900px, 100%); }
.hero-news { display: inline-flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: center; text-decoration: none; color: var(--fg); font-size: 13px; line-height: 1.5; padding: 7px 16px 7px 8px; border: 1px solid var(--line); border-radius: 999px; background: rgba(15, 17, 38, .66); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.hero-news b { font: 700 11px/1 var(--latin); letter-spacing: .12em; color: #1b1630; background: var(--gold); padding: 5px 9px; border-radius: 999px; }
.hero-news:hover { border-color: var(--gold); }
.hero-title { margin-top: 28px; }
.hero-title .en { display: block; font: 800 clamp(24px, 8.4vw, 104px)/1.1 var(--latin); letter-spacing: .05em; white-space: nowrap; background: linear-gradient(180deg, #fff6d6 8%, #ecd595 48%, #b98f3e 96%); -webkit-background-clip: text; background-clip: text; color: transparent; filter: drop-shadow(0 4px 22px rgba(0, 0, 0, .55)); }
.hero-title .ja { display: block; margin-top: 14px; font: 700 clamp(18px, 3.4vw, 32px)/1.2 var(--display); letter-spacing: .5em; padding-left: .5em; color: #fff; text-shadow: 0 2px 14px rgba(0, 0, 0, .7); }
.hero-copy { margin-top: 34px; font: 500 clamp(17px, 2.5vw, 24px)/1.8 var(--display); letter-spacing: .08em; text-shadow: 0 2px 12px rgba(0, 0, 0, .8); }
.hero-sub { margin-top: 8px; color: #d6d4ee; font-size: 14px; letter-spacing: .1em; text-shadow: 0 1px 8px rgba(0, 0, 0, .8); }
.hero-cta { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.btn { display: inline-flex; flex-direction: column; align-items: center; justify-content: center; min-width: 190px; min-height: 60px; padding: 10px 26px; border-radius: 999px; text-decoration: none; font: 700 16px/1.3 var(--body); letter-spacing: .06em; transition: transform .2s, filter .2s, background .2s, border-color .2s; }
.btn small { font-weight: 500; font-size: 11px; letter-spacing: .08em; opacity: .8; }
.btn:hover { transform: translateY(-2px); }
.btn-gold { color: #1b1630; background: linear-gradient(180deg, #f6e6b0, var(--gold-deep)); box-shadow: 0 8px 30px rgba(232, 207, 138, .28), inset 0 1px 0 rgba(255, 255, 255, .6); }
.btn-gold:hover { filter: brightness(1.07); }
.btn-line { color: var(--fg); border: 1px solid rgba(232, 207, 138, .55); background: rgba(15, 17, 38, .6); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.btn-line:hover { border-color: var(--gold); background: rgba(29, 33, 69, .8); }
.btn.is-soon { opacity: .55; cursor: default; border-style: dashed; }
.btn.is-soon:hover { transform: none; border-color: rgba(232, 207, 138, .55); background: rgba(15, 17, 38, .6); }
.hero-scroll { position: absolute; bottom: 22px; left: 50%; width: 26px; height: 42px; margin-left: -13px; border: 1px solid rgba(255, 255, 255, .5); border-radius: 14px; }
.hero-scroll span { position: absolute; left: 50%; top: 8px; width: 3px; height: 8px; margin-left: -1.5px; background: var(--gold); border-radius: 2px; animation: wheel 1.8s ease-in-out infinite; }
@keyframes wheel { 0% { transform: translateY(0); opacity: 1; } 80%, 100% { transform: translateY(14px); opacity: 0; } }

/* 節の共通 */
.sec { padding: clamp(72px, 10vw, 128px) 0; position: relative; }
.sec-alt { background: var(--bg-alt); border-block: 1px solid var(--line-soft); }
.sec-head { text-align: center; margin-bottom: clamp(32px, 5vw, 56px); }
.eyebrow { font: 700 13px/1 var(--latin); letter-spacing: .42em; padding-left: .42em; color: var(--gold); }
.eyebrow::after { content: ""; display: block; width: 44px; height: 1px; margin: 16px auto 0; background: linear-gradient(90deg, transparent, var(--gold), transparent); }
.sec-head h2, .play h2 { margin-top: 18px; font: 700 clamp(26px, 4.4vw, 42px)/1.4 var(--display); letter-spacing: .08em; text-wrap: balance; }
.sec-lead { margin: 16px auto 0; max-width: 46em; color: var(--muted); font-size: 15px; }

/* 世界 */
.world-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(28px, 5vw, 64px); align-items: start; }
.world-text p + p { margin-top: 1.2em; }
.world-text .lead { font: 500 clamp(18px, 2.2vw, 22px)/2 var(--display); letter-spacing: .04em; }
.world-text p:not(.lead) { color: #cfcde6; }
rt { font-size: .5em; letter-spacing: .1em; color: var(--muted); }
.glossary { display: grid; gap: 14px; }
.glossary div { padding: 18px 22px; background: linear-gradient(135deg, var(--panel), rgba(22, 25, 53, .4)); border: 1px solid var(--line-soft); border-left: 2px solid var(--gold); border-radius: 4px 12px 12px 4px; }
.glossary dt { font: 700 17px/1.5 var(--display); color: var(--gold); letter-spacing: .1em; }
.glossary dd { margin-top: 4px; font-size: 14px; line-height: 1.8; color: #cfcde6; }
.elements { margin-top: clamp(40px, 6vw, 72px); display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.elements li { text-align: center; padding: 22px 8px 18px; border-radius: 14px; background: radial-gradient(circle at 50% 0%, color-mix(in srgb, var(--c) 18%, transparent), transparent 70%), var(--panel); border: 1px solid color-mix(in srgb, var(--c) 35%, transparent); }
.elements img { width: clamp(52px, 8vw, 84px); margin-inline: auto; filter: drop-shadow(0 0 14px color-mix(in srgb, var(--c) 60%, transparent)); }
.elements b { display: block; margin-top: 10px; font: 700 clamp(18px, 2.4vw, 24px)/1 var(--display); color: var(--c); }
.elements span { display: block; margin-top: 8px; font: 500 10px/1 var(--latin); letter-spacing: .2em; color: var(--muted); }

/* 物語：始まりの場面と、部の名前 */
.prologue { max-width: 640px; margin-inline: auto; display: grid; gap: 18px; }
.prologue .narr { text-align: center; font: 500 clamp(16px, 2.2vw, 20px)/2 var(--display); letter-spacing: .08em; color: #dcdaf0; }
.prologue .narr.strong { margin-top: 10px; color: var(--gold); font-size: clamp(18px, 2.6vw, 24px); letter-spacing: .2em; }
.prologue .line { display: flex; align-items: flex-end; gap: 14px; }
.prologue .line.me { flex-direction: row-reverse; }
.prologue .line img { flex: none; width: 72px; height: 72px; object-fit: cover; object-position: top; border-radius: 50%; border: 1px solid var(--line); background: var(--panel-2); }
.prologue .line p { padding: 12px 18px; border-radius: 16px 16px 16px 4px; background: var(--panel); border: 1px solid var(--line-soft); line-height: 1.8; }
.prologue .line.me p { border-radius: 16px 16px 4px 16px; }
.prologue .line b { display: block; font-size: 12px; letter-spacing: .1em; color: var(--c); }
.parts { margin-top: clamp(48px, 7vw, 80px); display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.parts li { position: relative; display: flex; flex-direction: column; padding: 20px 16px 18px; border-radius: 14px; background: var(--panel); border: 1px solid var(--line-soft); border-top: 2px solid var(--gold); }
.parts .p-no { font: 700 12px/1 var(--body); letter-spacing: .2em; color: var(--gold); }
.parts .p-no em { margin-left: 8px; font: 700 9px/1 var(--latin); font-style: normal; letter-spacing: .1em; background: #ff6a8a; color: #fff; padding: 3px 6px; border-radius: 999px; vertical-align: 1px; }
.parts b { margin-top: 10px; font: 700 19px/1.5 var(--display); letter-spacing: .08em; }
.parts .p-tease { margin: 8px 0 14px; font-size: 13px; line-height: 1.8; color: #c6c4de; }
.parts small { margin-top: auto; font-size: 11px; letter-spacing: .12em; color: var(--muted); }
.parts-note { margin-top: 22px; text-align: center; font-size: 13px; color: var(--muted); }

/* 登場人物 */
.g-female, [data-g="female"] .g-male { display: none; }
[data-g="female"] .g-female { display: block; }
.chara-hero { display: grid; grid-template-columns: minmax(0, 380px) 1fr; gap: clamp(20px, 4vw, 56px); align-items: center; padding: clamp(18px, 3vw, 36px); border-radius: 20px; border: 1px solid var(--line-soft); background: radial-gradient(circle at 22% 50%, color-mix(in srgb, var(--c) 20%, transparent), transparent 62%), var(--panel); }
.chara-art { position: relative; aspect-ratio: 1; }
.chara-art::before { content: ""; position: absolute; inset: 8%; border-radius: 50%; border: 1px solid color-mix(in srgb, var(--c) 50%, transparent); box-shadow: 0 0 60px color-mix(in srgb, var(--c) 30%, transparent) inset; }
.chara-art img { position: relative; width: 100%; height: 100%; object-fit: contain; -webkit-mask-image: linear-gradient(180deg, #000 78%, transparent 100%); mask-image: linear-gradient(180deg, #000 78%, transparent 100%); }
.chara-role { font-size: 13px; letter-spacing: .16em; color: var(--c); }
.chara-name { margin-top: 4px; font: 700 clamp(28px, 4.6vw, 46px)/1.3 var(--display); letter-spacing: .1em; }
.chara-text { margin-top: 16px; color: #d6d4ee; max-width: 34em; }
.chara-actions { margin-top: 22px; display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.chara-actions .seg { margin-top: 0; }
.voices { margin-top: 18px; display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; }
.pill.voice-btn { position: relative; padding-left: 38px; }
.voice-btn::before { content: ""; position: absolute; left: 18px; top: 50%; margin-top: -6px; border-style: solid; border-width: 6px 0 6px 10px; border-color: transparent transparent transparent currentColor; }
.pill.voice-btn.on, .pill.voice-btn.on:hover { border-color: var(--gold); color: #1b1630; background: var(--gold); }
.voice-btn.on::before { box-sizing: content-box; border-width: 0; width: 3px; height: 12px; border-inline: 3px solid currentColor; left: 16px; }
.pill { min-height: 44px; padding: 8px 18px; border-radius: 999px; border: 1px solid var(--line); background: rgba(10, 11, 26, .5); font-size: 14px; display: inline-flex; align-items: center; gap: 8px; transition: all .2s; }
.pill:hover { border-color: var(--gold); color: var(--gold); }
.chara-cards { margin-top: 14px; display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 14px; }
.chara-cards li { display: grid; grid-template-columns: 112px 1fr; gap: 16px; align-items: center; padding: 14px 18px 14px 14px; border-radius: 16px; background: radial-gradient(circle at 0% 50%, color-mix(in srgb, var(--c) 16%, transparent), transparent 60%), var(--panel); border: 1px solid var(--line-soft); border-left: 2px solid var(--c); transition: transform .25s, border-color .25s; }
.chara-cards li:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--c) 60%, transparent); }
.chara-cards img { width: 112px; height: 112px; object-fit: cover; object-position: top; border-radius: 12px; background: radial-gradient(circle at 50% 30%, color-mix(in srgb, var(--c) 30%, transparent), rgba(10, 11, 26, .6) 80%); }
.chara-cards .chara-role { font-size: 11px; }
.chara-cards h3 { font: 700 20px/1.4 var(--display); letter-spacing: .08em; }
.chara-cards p:not(.chara-role) { margin-top: 4px; font-size: 13px; line-height: 1.75; color: #c6c4de; }

/* 遊び方 */
.feature { display: grid; grid-template-columns: 1.25fr 1fr; gap: clamp(20px, 4vw, 56px); align-items: center; }
.feature + .feature, .skins { margin-top: clamp(48px, 7vw, 96px); }
.feature.rev figure { order: 2; }
.feature figure { border-radius: 16px; overflow: hidden; border: 1px solid var(--line); box-shadow: 0 24px 60px rgba(0, 0, 0, .5); }
.feature-no { font: 500 44px/1 var(--latin); color: transparent; -webkit-text-stroke: 1px var(--gold); letter-spacing: .06em; }
.feature h3, .skins h3 { margin-top: 10px; font: 700 clamp(21px, 2.8vw, 28px)/1.5 var(--display); letter-spacing: .06em; }
.feature p:not(.feature-no), .skins-head p:not(.feature-no) { margin-top: 12px; color: #d0cee8; }
.chips { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li { font-size: 12px; padding: 4px 12px; border-radius: 999px; border: 1px solid var(--line); color: var(--gold); }
.trials { margin-top: 14px; display: grid; gap: 8px; }
.trials div { display: grid; grid-template-columns: 8.2em 1fr; gap: 12px; padding-bottom: 8px; border-bottom: 1px dashed var(--line-soft); font-size: 14px; }
.trials dt { font-weight: 700; color: var(--gold); }
.trials dd { color: #d0cee8; }
.skins-head { text-align: center; max-width: 40em; margin-inline: auto; }
.seg { margin-top: 18px; display: inline-flex; border: 1px solid var(--line); border-radius: 999px; padding: 3px; }
.seg button { min-width: 84px; min-height: 40px; border: 0; background: none; border-radius: 999px; font-size: 14px; color: var(--muted); }
.seg button[aria-pressed="true"] { background: var(--gold); color: #1b1630; font-weight: 700; }
.skin-list { margin-top: 28px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.skin-list li { border-radius: 16px; overflow: hidden; background: var(--panel); border: 1px solid var(--line-soft); display: flex; flex-direction: column; }
.skin-list .pic { aspect-ratio: 1; background: radial-gradient(circle at 50% 35%, #3a3f6e, #171a38 75%); overflow: hidden; }
.skin-list .pic img { width: 100%; height: 100%; object-fit: contain; object-position: bottom; transition: transform .5s; }
.skin-list li:hover .pic img { transform: scale(1.04); }
.skin-list .txt { padding: 14px 16px 18px; }
.skin-list h4 { margin: 0; font: 700 17px/1.5 var(--display); letter-spacing: .06em; }
.skin-list em { display: inline-block; margin-top: 4px; font-style: normal; font-size: 11px; padding: 2px 10px; border-radius: 999px; background: rgba(232, 207, 138, .16); color: var(--gold); }
.skin-list p { margin-top: 8px; font-size: 13px; line-height: 1.8; color: #c6c4de; }

/* 画面 */
.shots { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.shots li:first-child { grid-column: span 2; grid-row: span 2; }
.shots a { display: block; position: relative; width: 100%; height: 100%; padding: 0; color: var(--fg); border: 1px solid var(--line-soft); border-radius: 12px; overflow: hidden; background: #000; }
.shots img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 1600 / 736; transition: transform .5s, opacity .3s; }
.shots a:hover img { transform: scale(1.04); }
.shots span { position: absolute; inset: auto 0 0 0; padding: 22px 12px 8px; font-size: 12px; text-align: left; background: linear-gradient(transparent, rgba(0, 0, 0, .8)); }
.lightbox { border: 0; padding: 0; background: transparent; max-width: min(96vw, 1500px); color: var(--fg); }
.lightbox::backdrop { background: rgba(5, 6, 16, .92); }
.lightbox img { width: 100%; border-radius: 10px; }
.lightbox p { text-align: center; margin-top: 10px; font-size: 14px; }
.lb-close { position: fixed; top: 12px; right: 16px; width: 48px; height: 48px; border-radius: 50%; border: 1px solid var(--line); background: rgba(10, 11, 26, .8); font-size: 24px; line-height: 1; }

/* 音楽 */
.player { max-width: 760px; margin-inline: auto; border-radius: 20px; border: 1px solid var(--line); background: linear-gradient(160deg, var(--panel-2), var(--panel)); overflow: hidden; }
.player-now { display: flex; align-items: center; gap: 20px; padding: 24px; border-bottom: 1px solid var(--line-soft); }
.play-big { flex: none; width: 68px; height: 68px; border-radius: 50%; border: 0; background: linear-gradient(180deg, #f6e6b0, var(--gold-deep)); position: relative; box-shadow: 0 6px 24px rgba(232, 207, 138, .3); }
.play-big::before { content: ""; position: absolute; left: 27px; top: 22px; border-style: solid; border-width: 12px 0 12px 19px; border-color: transparent transparent transparent #1b1630; }
.play-big.on::before { left: 23px; top: 22px; width: 7px; height: 24px; border: 0; border-inline: 7px solid #1b1630; box-sizing: content-box; }
.player-meta { flex: 1; min-width: 0; }
#now-name { font: 700 22px/1.4 var(--display); letter-spacing: .08em; }
#now-where { font-size: 12px; letter-spacing: .12em; color: var(--muted); }
.seek { margin-top: 12px; height: 16px; display: flex; align-items: center; cursor: pointer; }
.seek::before { content: ""; position: absolute; }
.seek { position: relative; }
.seek::after { content: ""; position: absolute; inset: 6px 0; border-radius: 4px; background: rgba(255, 255, 255, .12); }
.seek i { position: relative; z-index: 1; display: block; height: 4px; width: 0; border-radius: 4px; background: var(--gold); }
.tracks { max-height: 340px; overflow-y: auto; padding: 8px; counter-reset: tr; }
.tracks button { counter-increment: tr; display: flex; align-items: baseline; gap: 14px; width: 100%; min-height: 46px; padding: 8px 14px; border: 0; background: none; border-radius: 10px; text-align: left; }
.tracks button::before { content: counter(tr, decimal-leading-zero); font: 500 12px/1 var(--latin); color: var(--muted); width: 1.6em; }
.tracks button b { font-weight: 500; }
.tracks button small { margin-left: auto; font-size: 12px; color: var(--muted); }
.tracks button:hover { background: rgba(255, 255, 255, .05); }
.tracks button[aria-current="true"] { background: rgba(232, 207, 138, .12); color: var(--gold); }
.tracks button[aria-current="true"]::before { content: "♪"; color: var(--gold); }

/* 遊ぶ・フッター */
.play { position: relative; text-align: center; padding: clamp(88px, 12vw, 150px) 0; background: linear-gradient(180deg, var(--bg) 0%, rgba(10, 11, 26, .55) 30%, rgba(10, 11, 26, .55) 70%, #07081a 100%), url(assets/ui/gacha-bg.webp) center / cover; }
.play p { margin: 16px auto 0; max-width: 36em; color: #d6d4ee; }
.notes { margin: 36px auto 0; max-width: 40em; text-align: left; font-size: 12px; line-height: 1.9; color: var(--muted); }
.notes li { padding-left: 1.2em; text-indent: -1.2em; }
.notes li::before { content: "※ "; }
.site-foot { background: #07081a; padding: 44px 0 calc(36px + env(safe-area-inset-bottom)); text-align: center; border-top: 1px solid var(--line-soft); }
.foot-brand { font: 700 20px/1.4 var(--latin); letter-spacing: .16em; color: var(--gold); }
.foot-brand span { display: block; font: 500 12px/1.6 var(--display); letter-spacing: .5em; padding-left: .5em; color: var(--muted); }
.site-foot nav { margin-top: 22px; display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 22px; }
.site-foot nav a { font-size: 12px; color: var(--muted); text-decoration: none; padding: 6px 0; }
.site-foot nav a:hover { color: var(--gold); }
.copy { margin-top: 20px; font-size: 11px; letter-spacing: .1em; color: #6f6e8e; }

/* 幅のせまい画面 */
@media (max-width: 960px) {
  .nav-toggle { display: block; }
  .site-nav { position: fixed; inset: var(--head-h) 0 auto 0; flex-direction: column; align-items: stretch; gap: 0; padding: 8px 20px 24px; background: rgba(10, 11, 26, .97); border-bottom: 1px solid var(--line); transform: translateY(-120%); visibility: hidden; transition: transform .3s, visibility .3s; max-height: calc(100svh - var(--head-h)); overflow-y: auto; }
  .site-nav.open { transform: none; visibility: visible; }
  .site-nav a { display: flex; align-items: baseline; gap: 12px; text-align: left; font-size: 15px; padding: 14px 4px; border-bottom: 1px solid var(--line-soft); border-radius: 0; }
  .site-nav a small { font-size: 12px; }
  .site-nav .nav-cta { margin: 18px 0 0; justify-content: center; padding: 16px; font-size: 15px; border-radius: 999px; border: 0; }
  .parts { grid-template-columns: repeat(2, 1fr); }
  .skin-list { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
  body { font-size: 15px; }
  .sp { display: inline; }
  .world-grid, .feature, .chara-hero { grid-template-columns: 1fr; }
  .voices { justify-content: center; }
  .parts { grid-template-columns: 1fr; }
  .prologue .line img { width: 56px; height: 56px; }
  .feature.rev figure { order: 0; }
  .elements { gap: 6px; }
  .elements li { padding: 14px 2px 12px; border-radius: 10px; }
  .elements span { display: none; }
  .chara-hero { text-align: center; }
  .chara-art { max-width: 280px; margin-inline: auto; width: 100%; }
  .chara-text { text-align: left; }
  .chara-actions { justify-content: center; }
  .chara-cards { grid-template-columns: 1fr; }
  .chara-cards li { grid-template-columns: 88px 1fr; }
  .chara-cards img { width: 88px; height: 88px; }
  .shots { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .btn { min-width: 0; width: 100%; }
  .hero-cta { flex-direction: column; max-width: 340px; margin-inline: auto; }
  .player-now { padding: 18px; gap: 14px; }
  .tracks button small { display: none; }
  .trials div { grid-template-columns: 1fr; gap: 0; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}
@media (max-width: 400px) {
  .brand { font-size: 15px; gap: 8px; letter-spacing: .1em; }
  .sound { padding-inline: 11px; }
  .sound span { display: none; }
}