/* Aquarium 预告页：沿用品牌站排版，不展示尚未可发布的 App 截图。 */
.aquarium-product {
  --brand: #0f766e;
  --brand-dark: #0f766e;
  --accent: #b97042;
  --text: #183d38;
  --muted: #5c706b;
  --border: #d8e5df;
  --bg: #fafbf7;
  --soft: #eef4ed;
}
.product-nav, .locale-nav { display: flex; align-items: center; }
.product-nav { gap: 28px; margin-left: auto; }
.locale-nav { gap: 3px; }
.product-nav a, .locale-nav a { font-size: .88rem; text-decoration: none; }
.locale-nav a { min-width: 34px; padding: 8px; border-radius: 5px; text-align: center; }
.locale-nav a[aria-current] { background: var(--soft); font-weight: 700; }
.product-hero { display: grid; grid-template-columns: 1.15fr .85fr; align-items: center; gap: 72px; padding-block: 88px; }
.product-hero h1 { margin: 22px 0; font: 400 clamp(2.8rem, 4.8vw, 4.5rem)/1.22 Georgia, "Songti SC", "Songti TC", serif; letter-spacing: -1.8px; }
.product-hero h1 em { color: var(--brand); font-style: normal; }
.release-status { display: inline-flex; align-items: center; gap: 9px; margin: 0; color: var(--brand); font-size: .82rem; }
.release-status span { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.lead { max-width: 540px; margin-bottom: 26px; font-size: 1.08rem; line-height: 1.9; }
.release-note { max-width: 500px; margin: 20px 0 0; font-size: .82rem; line-height: 1.8; }
.aquarium-product .button.primary { color: #fff; }
.preview-card { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; min-height: 430px; padding: 48px; border: 1px solid var(--border); border-radius: 100px 12px 12px 12px; background: var(--soft); }
.preview-symbol { color: var(--brand); font: 7rem/.9 Georgia, serif; }
.preview-label { margin: 28px 0 8px; color: var(--brand); font-size: .76rem; font-weight: 600; letter-spacing: 1.2px; }
.preview-card > span:not(.preview-symbol) { display: block; width: 100%; padding: 8px 0; border-top: 1px solid var(--border); color: var(--text); }
.aquarium-product h2 { margin-bottom: 25px; font: 400 clamp(1.9rem, 3.3vw, 2.7rem)/1.35 Georgia, "Songti SC", "Songti TC", serif; letter-spacing: -.8px; }
.features { padding-block: 80px; border-block: 1px solid var(--border); }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin-top: 38px; }
.feature { padding: 30px; border: 1px solid var(--border); border-radius: 12px; background: var(--soft); }
.feature .eyebrow { margin-bottom: 22px; }
.feature h3 { color: var(--text); font-size: 1.18rem; line-height: 1.5; }
.feature p:last-child { margin-bottom: 0; line-height: 1.85; }
.progress-section { padding-block: 82px; border-bottom: 1px solid var(--border); }
.progress-section > p:not(.eyebrow) { max-width: 750px; }
.progress-section ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 32px; max-width: 850px; margin: 30px 0; padding-left: 20px; }
.progress-section li { padding-left: 4px; }
.fine { font-size: .84rem; line-height: 1.8; }
.product-faq { max-width: 850px; padding-block: 80px; }
.product-faq details { padding: 19px 0; border-top: 1px solid var(--border); }
.product-faq summary { padding-right: 12px; cursor: pointer; font-weight: 550; }
.product-faq details p { padding-top: 16px; margin-bottom: 0; font-size: .94rem; }
.closing { padding-block: 60px; border-block: 1px solid var(--border); text-align: center; }
.closing a { display: inline-block; margin-top: 6px; }
.product-footer { display: flex; align-items: center; justify-content: space-between; gap: 22px; padding-block: 30px; color: var(--muted); font-size: .78rem; }
@media (prefers-color-scheme: dark) {
  .aquarium-product { --bg: #101d19; --soft: #192c25; --text: #e4eee5; --muted: #acbeb4; --border: #30463b; --brand: #86cdbd; --brand-dark: #86cdbd; }
  .aquarium-product .button.primary { background: #226d61; }
}
@media (max-width: 900px) {
  .product-hero { gap: 36px; }
  .feature-grid { gap: 14px; }
  .feature { padding: 22px; }
}
@media (max-width: 800px) {
  .aquarium-product .wrap { width: calc(100% - 40px); }
  .aquarium-product .home-header { flex-wrap: wrap; gap: 10px; min-height: 100px; padding-block: 18px; }
  .aquarium-product .brand { font-size: 1.4rem; }
  .product-nav { order: 3; justify-content: space-between; width: 100%; margin: 10px 0 0; gap: 10px; }
  .locale-nav { margin-left: auto; }
  .product-hero { grid-template-columns: 1fr; gap: 36px; padding-block: 48px; }
  .product-hero h1 { font-size: 2.65rem; letter-spacing: -1px; }
  .lead { font-size: 1rem; }
  .preview-card { min-height: 0; padding: 28px; border-radius: 60px 10px 10px 10px; }
  .preview-symbol { font-size: 5rem; }
  .preview-label { margin-top: 4px; }
  .features, .progress-section, .product-faq { padding-block: 54px; }
  .feature-grid, .progress-section ul { grid-template-columns: 1fr; }
  .product-footer { flex-wrap: wrap; justify-content: center; font-size: .73rem; }
  .product-footer span { order: 3; width: 100%; text-align: center; }
}