/* bingo5.fujibit.com 共通スタイル（scripts/build_site.py が各ページから読み込む）
   骨格は流楽・波楽のサイトと同じ。色はアプリの Theme（#0A0D24 → #170A33、紫 #c77dff / 青 #4d96ff）に合わせる */
:root {
  --bg: #0a0d24;
  --bg-2: #170a33;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-2: rgba(255, 255, 255, 0.075);
  --border: rgba(199, 160, 255, 0.17);
  --text: #eeeaff;
  --muted: #b0aed0;
  --faint: #7c7aa0;
  --purple: #c77dff;
  --blue: #4d96ff;
  --gold: #ffd166;
  --radius: 20px;
  --max: 1160px;
  --font: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Segoe UI", "Noto Sans JP", Roboto, sans-serif;
  --num: ui-rounded, "SF Pro Rounded", "Hiragino Maru Gothic ProN", -apple-system, "Segoe UI", Roboto, sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  font-family: var(--font);
  background: var(--bg) linear-gradient(180deg, var(--bg) 0%, #0f0b2c 45%, var(--bg-2) 100%);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: var(--purple); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
main { overflow-x: clip; }
.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ヘッダー（すりガラス） */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10, 13, 36, 0.62);
  backdrop-filter: saturate(160%) blur(16px);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
  border-bottom: 1px solid var(--border);
}
.site-header .wrap { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 900; letter-spacing: 0.04em; }
.brand:hover { text-decoration: none; }
.brand img { width: 34px; height: 34px; border-radius: 9px; }
.brand span { white-space: nowrap; }
.brand small { color: var(--faint); font-weight: 600; font-size: 0.68rem; letter-spacing: 0.18em; margin-left: 4px; }
.nav { display: flex; gap: 20px; margin-left: auto; align-items: center; }
.nav a { color: var(--muted); font-size: 0.9rem; font-weight: 600; }
.nav a:hover { color: var(--text); text-decoration: none; }
.nav .lang { border: 1px solid var(--border); border-radius: 999px; padding: 4px 12px; font-size: 0.8rem; white-space: nowrap; }
.nav .cta {
  white-space: nowrap; color: #fff; padding: 8px 16px; border-radius: 999px;
  background: linear-gradient(135deg, var(--purple), var(--blue));
  box-shadow: 0 6px 20px rgba(199, 125, 255, 0.35);
}
@media (max-width: 900px) { .nav .hide-sm { display: none; } }

/* ヒーロー */
.hero { position: relative; overflow: hidden; padding: 72px 0 104px; }
.hero canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; }
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    radial-gradient(55% 55% at 18% 40%, rgba(10, 13, 36, 0.9), transparent 72%),
    linear-gradient(180deg, transparent 72%, var(--bg));
}
.hero .wrap { position: relative; z-index: 2; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.8rem; font-weight: 700; letter-spacing: 0.12em; color: var(--purple);
  border: 1px solid rgba(199, 125, 255, 0.35); background: rgba(199, 125, 255, 0.08);
  border-radius: 999px; padding: 6px 14px; margin-bottom: 22px;
}
.eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--purple); box-shadow: 0 0 10px var(--purple); }
.hero h1 {
  font-size: clamp(2.6rem, 6.6vw, 4.9rem); line-height: 1.1; font-weight: 900; letter-spacing: -0.01em;
  background: linear-gradient(120deg, #ffffff 8%, #e2c4ff 45%, #8fb8ff 95%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero .lead { margin-top: 22px; font-size: clamp(1rem, 1.6vw, 1.12rem); color: var(--muted); max-width: 34em; }
.stores { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.store {
  display: inline-flex; align-items: center; gap: 12px; padding: 12px 20px 12px 16px;
  border-radius: 14px; background: #fff; color: #120c2c; font-weight: 700; min-width: 196px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.store:hover { text-decoration: none; transform: translateY(-2px); box-shadow: 0 10px 28px rgba(199, 125, 255, 0.35); }
.store svg { width: 26px; height: 26px; flex: none; }
.store span { display: flex; flex-direction: column; line-height: 1.15; }
.store small { font-size: 0.7rem; font-weight: 600; color: #5a5478; }
.store.alt { background: rgba(255, 255, 255, 0.06); color: var(--text); border: 1px solid var(--border); }
.store.alt small { color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 26px; }
.chip { font-size: 0.8rem; color: var(--muted); border: 1px solid var(--border); border-radius: 999px; padding: 4px 12px; background: var(--surface); }

/* 端末の枠 */
.device {
  position: relative; width: min(320px, 78vw); margin: 0 auto; aspect-ratio: 540 / 1173;
  border-radius: 46px; padding: 11px; background: linear-gradient(160deg, #3a2d63, #120c2c);
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(210, 180, 255, 0.2), 0 0 90px rgba(199, 125, 255, 0.28);
}
.device img { width: 100%; height: 100%; object-fit: cover; border-radius: 36px; }
.hero-visual { position: relative; }
.hero .device { transform: rotate(-4deg); animation: float 7s ease-in-out infinite; }
@keyframes float { 0%, 100% { transform: rotate(-4deg) translateY(0); } 50% { transform: rotate(-3deg) translateY(-12px); } }

/* 光沢のあるボール（アプリの CellSlotView と同じ配色） */
.ball, .orb {
  display: inline-grid; place-items: center; color: #fff; font-family: var(--num); font-weight: 900;
  background: radial-gradient(circle at 32% 28%, rgba(255, 255, 255, 0.75) 0 6%, transparent 30%),
              radial-gradient(circle at 35% 30%, var(--c), color-mix(in srgb, var(--c) 45%, #0a0d24) 95%);
  box-shadow: inset 0 -6px 12px rgba(0, 0, 0, 0.28), 0 8px 22px color-mix(in srgb, var(--c) 45%, transparent);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.35);
}
.orb { position: absolute; z-index: 3; width: 64px; height: 64px; border-radius: 50%; font-size: 1.45rem; animation: bob 6s ease-in-out infinite; }
.orb.o0 { top: 6%; left: 2%; animation-delay: -1s; }
.orb.o1 { top: 18%; right: 0; width: 76px; height: 76px; font-size: 1.7rem; animation-delay: -3s; }
.orb.o2 { bottom: 24%; left: -2%; width: 54px; height: 54px; font-size: 1.2rem; animation-delay: -2s; }
.orb.o3 { bottom: 6%; right: 6%; animation-delay: -4.5s; }
.orb.o4 { top: 48%; right: -4%; width: 46px; height: 46px; font-size: 1.05rem; animation-delay: -5s; }
@keyframes bob { 0%, 100% { transform: translateY(0) rotate(0); } 50% { transform: translateY(-14px) rotate(8deg); } }
@media (prefers-reduced-motion: reduce) { .hero .device, .orb { animation: none; } }

/* 数字の帯 */
.stats { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: rgba(255, 255, 255, 0.02); }
.stats .wrap { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 26px 12px; text-align: center; }
.stat + .stat { border-left: 1px solid var(--border); }
.stat b { display: block; font-family: var(--num); font-size: 2rem; font-weight: 900; background: linear-gradient(120deg, #fff, var(--purple)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stat span { font-size: 0.85rem; color: var(--muted); }

/* セクション */
section.block { padding: 96px 0; }
.section-head { max-width: 720px; margin-bottom: 44px; }
.kicker { font-size: 0.78rem; font-weight: 800; letter-spacing: 0.18em; color: var(--purple); text-transform: uppercase; }
.section-head h2, .demo h2 { font-size: clamp(1.8rem, 3.6vw, 2.6rem); line-height: 1.25; margin-top: 10px; font-weight: 850; }
.section-head p { color: var(--muted); margin-top: 14px; }

/* 戦略のカード */
.strategies { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.strategy { grid-column: span 2; }
.strategy.secret { grid-column: span 4; }
.strategy:nth-child(4) { grid-column: span 2; }
.strategy {
  position: relative; border-radius: var(--radius); padding: 24px 24px 26px; overflow: hidden;
  background: linear-gradient(160deg, var(--surface-2), var(--surface)); border: 1px solid var(--border);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.strategy::before {
  content: ""; position: absolute; inset: -45% 40% 55% -25%; border-radius: 50%;
  background: radial-gradient(circle, var(--c), transparent 70%); opacity: 0.22; transition: opacity 0.25s ease;
}
.strategy:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--c) 60%, transparent); box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35); }
.strategy:hover::before { opacity: 0.4; }
.strategy > * { position: relative; }
.strategy .num { position: absolute; top: 18px; right: 22px; font-family: var(--num); font-size: 2.6rem; font-weight: 900; line-height: 1; color: color-mix(in srgb, var(--c) 35%, transparent); }
.strategy .tag { font-size: 0.72rem; font-weight: 800; letter-spacing: 0.14em; color: var(--c); }
.strategy h3 { font-size: 1.15rem; margin: 6px 0 8px; }
.strategy p { font-size: 0.9rem; color: var(--muted); line-height: 1.65; }
.strategy.secret { background: linear-gradient(135deg, rgba(255, 209, 102, 0.12), rgba(199, 125, 255, 0.14)); border-color: rgba(255, 209, 102, 0.35); }
.badge {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; font-size: 0.75rem; font-weight: 800; letter-spacing: 0.04em;
  color: #2a1a00; background: linear-gradient(135deg, #ffe08f, #ffb547); border-radius: 999px; padding: 4px 12px;
}
.badge svg { width: 14px; height: 14px; }

/* しくみ（デモの盤面） */
.demo {
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center;
  border-radius: 32px; padding: 56px; border: 1px solid var(--border);
  background: radial-gradient(80% 90% at 85% 50%, rgba(77, 150, 255, 0.14), transparent 70%),
              linear-gradient(135deg, rgba(199, 125, 255, 0.10), rgba(255, 255, 255, 0.02));
}
.demo-lead { color: var(--muted); margin-top: 14px; }
.points { list-style: none; margin-top: 26px; display: grid; gap: 14px; }
.points li { display: grid; gap: 2px; padding-left: 18px; position: relative; }
.points li::before { content: ""; position: absolute; left: 0; top: 0.6em; width: 8px; height: 8px; border-radius: 50%; background: linear-gradient(135deg, var(--purple), var(--blue)); }
.points b { font-size: 0.98rem; }
.points span { color: var(--muted); font-size: 0.9rem; }
.demo-board { display: flex; flex-direction: column; align-items: center; gap: 18px; }
.grid-demo {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; width: min(380px, 100%);
  padding: 16px; border-radius: 26px; background: rgba(10, 13, 36, 0.65); border: 1px solid var(--border);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.45), 0 0 60px rgba(199, 125, 255, 0.15);
}
.gcell {
  position: relative; aspect-ratio: 1; border-radius: 18px; display: grid; place-items: center; color: #fff;
  background: radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.55) 0 5%, transparent 32%),
              linear-gradient(160deg, var(--c), color-mix(in srgb, var(--c) 40%, #0a0d24));
  box-shadow: inset 0 -8px 16px rgba(0, 0, 0, 0.25), 0 10px 24px color-mix(in srgb, var(--c) 35%, transparent);
}
.gcell b { font-family: var(--num); font-size: clamp(1.7rem, 6vw, 2.5rem); font-weight: 900; text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3); }
.gcell .nm { position: absolute; top: 7px; left: 10px; font-size: 0.66rem; font-weight: 800; opacity: 0.85; letter-spacing: 0.06em; }
.gcell .rg { position: absolute; bottom: 6px; right: 10px; font-size: 0.62rem; font-weight: 700; opacity: 0.75; }
.gcell.free { background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.18); box-shadow: inset 0 0 24px rgba(255, 209, 102, 0.12); align-content: center; gap: 0; }
.gcell.free b { color: var(--gold); font-size: clamp(1.4rem, 5vw, 2rem); line-height: 1; }
.gcell.free span { color: var(--gold); font-size: 0.72rem; font-weight: 900; letter-spacing: 0.16em; }
.gcell.pop { animation: pop 0.55s cubic-bezier(0.34, 1.56, 0.64, 1); }
@keyframes pop { 0% { transform: scale(0.55) rotate(-14deg); } 100% { transform: scale(1) rotate(0); } }
@media (prefers-reduced-motion: reduce) { .gcell.pop { animation: none; } }
.shuffle {
  display: inline-flex; align-items: center; gap: 8px; cursor: pointer; border: 0; font: inherit; font-weight: 800; color: #fff;
  padding: 12px 22px; border-radius: 999px; background: linear-gradient(135deg, var(--purple), var(--blue));
  box-shadow: 0 10px 26px rgba(199, 125, 255, 0.35); transition: transform 0.2s ease;
}
.shuffle:hover { transform: translateY(-2px); }
.shuffle:active { transform: scale(0.97); }
.shuffle svg { width: 18px; height: 18px; }
.demo-board .note { color: var(--faint); font-size: 0.78rem; text-align: center; max-width: 30em; }

/* スクリーンショット */
/* 左端はほかのセクション（.wrap の内側）にそろえ、右へはみ出してスクロールする */
.gallery { display: grid; grid-auto-flow: column; grid-auto-columns: min(260px, 70vw); gap: 26px; overflow-x: auto; scroll-snap-type: x mandatory; scroll-padding-inline: max(24px, calc((100vw - var(--max)) / 2 + 24px)); padding: 8px max(24px, calc((100vw - var(--max)) / 2 + 24px)) 28px; scrollbar-width: thin; }
.gallery figure { scroll-snap-align: start; }
.gallery .device { width: 100%; border-radius: 38px; padding: 9px; }
.gallery .device img { border-radius: 30px; }
.gallery figcaption { margin-top: 16px; text-align: center; }
.gallery figcaption b { display: block; font-size: 1rem; }
.gallery figcaption span { font-size: 0.85rem; color: var(--muted); }

/* 特長 */
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 18px; }
.feature { border-radius: var(--radius); padding: 26px; background: var(--surface); border: 1px solid var(--border); transition: border-color 0.25s ease, background 0.25s ease; }
.feature:hover { border-color: rgba(199, 125, 255, 0.4); background: var(--surface-2); }
.feature .ico { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: linear-gradient(135deg, rgba(199, 125, 255, 0.28), rgba(77, 150, 255, 0.25)); border: 1px solid var(--border); margin-bottom: 16px; }
.feature .ico svg { width: 22px; height: 22px; stroke: #e2c4ff; }
.feature h3 { font-size: 1.05rem; margin-bottom: 6px; }
.feature p { color: var(--muted); font-size: 0.92rem; }

/* 料金・注意と CTA */
.two-panels { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 18px; }
.panel { border-radius: 28px; padding: 36px; background: linear-gradient(135deg, rgba(199, 125, 255, 0.12), rgba(77, 150, 255, 0.10)); border: 1px solid var(--border); }
.panel h2 { font-size: 1.45rem; margin-bottom: 12px; }
.panel p { color: var(--muted); font-size: 0.95rem; }
.panel p + p { margin-top: 10px; }
.panel .links { font-weight: 700; }
.panel.warn { background: rgba(255, 209, 102, 0.05); border-color: rgba(255, 209, 102, 0.25); }
.panel.warn h2 { color: var(--gold); }
.panel.warn p { font-size: 0.88rem; }
.cta-band { text-align: center; }
.cta-band h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 900; }
.cta-sub { color: var(--muted); margin-top: 10px; font-size: 0.9rem; }
.cta-band .stores { justify-content: center; }
.mini-balls { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; margin-bottom: 26px; }
.mini-balls .ball { width: 44px; height: 44px; border-radius: 50%; font-size: 1.05rem; }

/* 下層ページ（プライバシー等） */
.page { padding: 64px 0 96px; }
.page .container { max-width: 800px; margin: 0 auto; padding: 0 24px; }
h1.page { padding: 0; font-size: clamp(2rem, 4vw, 2.6rem); font-weight: 900; background: linear-gradient(120deg, #fff, #e2c4ff 55%, #8fb8ff); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; margin-bottom: 8px; }
.subtitle { color: var(--muted); margin-bottom: 32px; font-size: 0.92rem; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; margin-bottom: 18px; }
.card h2 { font-size: 1.08rem; margin-bottom: 10px; }
.card h3 { font-size: 0.98rem; margin: 14px 0 6px; }
.card p, .card li { color: var(--muted); font-size: 0.95rem; line-height: 1.8; }
.card p { margin-bottom: 8px; }
.card p:last-child { margin-bottom: 0; }
.card ul, .card ol { margin: 8px 0 8px 20px; }
.card strong { color: var(--text); }
.card .meta { font-size: 0.85rem; color: var(--faint); }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.86em; color: var(--text); background: rgba(255, 255, 255, 0.07); padding: 1px 6px; border-radius: 6px; }
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 10px 0 14px; }
/* 列が細くなりすぎないよう最小幅を持たせ、狭い画面では表だけ横にスクロール */
.table-wrap table { min-width: 620px; }
table { width: 100%; border-collapse: collapse; font-size: 0.86rem; color: var(--muted); }
th, td { border: 1px solid var(--border); padding: 10px; text-align: left; vertical-align: top; line-height: 1.6; }
th { color: var(--text); background: rgba(199, 125, 255, 0.1); }

/* よくある質問（開閉） */
.faq-list { margin-bottom: 28px; }
.faq-list h2 { font-size: 1.3rem; margin: 8px 0 16px; }
.faq { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; margin-bottom: 10px; transition: border-color 0.2s ease, background 0.2s ease; }
.faq[open] { border-color: rgba(199, 125, 255, 0.4); background: var(--surface-2); }
.faq summary { list-style: none; cursor: pointer; padding: 18px 52px 18px 22px; font-weight: 700; position: relative; line-height: 1.55; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; position: absolute; right: 22px; top: 50%; width: 9px; height: 9px; margin-top: -7px;
  border-right: 2px solid var(--purple); border-bottom: 2px solid var(--purple); transform: rotate(45deg); transition: transform 0.2s ease;
}
.faq[open] summary::after { transform: rotate(-135deg); margin-top: -2px; }
.faq .answer { padding: 0 22px 20px; color: var(--muted); font-size: 0.94rem; line-height: 1.85; }
.faq .answer strong { color: var(--text); }
.contact-card p { margin-bottom: 16px; }
.email-btn {
  display: inline-block; color: #fff; font-weight: 800; padding: 12px 24px; border-radius: 999px;
  background: linear-gradient(135deg, var(--purple), var(--blue)); box-shadow: 0 8px 22px rgba(199, 125, 255, 0.3);
}
.email-btn:hover { text-decoration: none; transform: translateY(-1px); }

/* フッター */
.site-footer { border-top: 1px solid var(--border); padding: 44px 0 56px; color: var(--faint); font-size: 0.86rem; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 20px 40px; justify-content: space-between; align-items: flex-start; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 10px 22px; }
.site-footer nav a { color: var(--muted); }

/* スクロールで浮かび上がる（JS が有効なときだけ） */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s ease, transform 0.7s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .js .reveal { opacity: 1; transform: none; transition: none; } }

@media (max-width: 960px) {
  .strategies { grid-template-columns: repeat(2, 1fr); }
  .strategy, .strategy:nth-child(4) { grid-column: span 1; }
  .strategy.secret { grid-column: span 2; }
  .demo { grid-template-columns: 1fr; gap: 36px; padding: 40px 28px; }
  .two-panels { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .hero { padding: 40px 0 64px; }
  .hero .wrap { grid-template-columns: 1fr; gap: 44px; }
  .hero .device { width: min(260px, 64vw); }
  .orb { transform: scale(0.85); }
  .stats .wrap { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3) { border-left: none; }
  .stat:nth-child(n + 3) { border-top: 1px solid var(--border); }
  section.block { padding: 72px 0; }
  .panel { padding: 28px 22px; }
}
@media (max-width: 560px) {
  .strategies { grid-template-columns: 1fr; }
  .strategy.secret { grid-column: span 1; }
  .demo { padding: 28px 18px; border-radius: 24px; }
  .grid-demo { gap: 8px; padding: 10px; }
  .orb.o1 { width: 60px; height: 60px; font-size: 1.35rem; }
  .orb.o4 { display: none; }
}
@media (max-width: 480px) {
  .wrap { padding: 0 16px; }
  .page .container { padding: 0 16px; }
  .site-header .wrap { gap: 12px; }
  .nav { gap: 10px; }
  .brand small { display: none; }
  .brand span { font-size: 0.92rem; }
  .nav .cta { padding: 7px 14px; font-size: 0.85rem; }
  .nav .lang { padding: 4px 10px; }
  .store { min-width: 0; flex: 1 1 100%; justify-content: center; }
  .gallery { padding: 8px 16px 24px; scroll-padding-inline: 16px; }
  .card { padding: 22px 18px; }
  .faq summary { padding: 16px 44px 16px 18px; }
  .faq .answer { padding: 0 18px 18px; }
  .mini-balls { gap: 6px; }
  .mini-balls .ball { width: 36px; height: 36px; font-size: 0.9rem; }
}
/* ロゴ・言語・ダウンロードが 1 行に収まらない幅では、ダウンロード（ヒーローにもある）を隠す */
@media (max-width: 420px) { .nav .cta { display: none; } }