/* Webアプリ開発ページ専用。説明文・カード見出しのサイズはここで共通管理します。 */
#yl-webapp {
  --yld-blue: #087bd2;
  --yld-navy: #1a3a5c;
  --yld-muted: #58789a;
  --yld-pale: #f1f8ff;
  --yld-line: #dce9f5;
  --yld-description-size: 16px;
  --yld-card-title-size: 18px;
  color: var(--yld-navy);
  font-size: var(--yld-description-size);
  line-height: 1.85;
  overflow-wrap: anywhere;
}
#yl-webapp *, #yl-webapp *::before, #yl-webapp *::after { box-sizing: border-box; }
#yl-webapp h2, #yl-webapp h3, #yl-webapp p, #yl-webapp ul, #yl-webapp ol, #yl-webapp figure { margin: 0; padding: 0; }
#yl-webapp h2, #yl-webapp h3 { border: 0; color: var(--yld-navy); letter-spacing: 0; }
#yl-webapp h2::before, #yl-webapp h3::before { content: none; }
#yl-webapp a { color: var(--yld-blue); text-decoration: none; opacity: 1; }
#yl-webapp a:focus-visible, #yl-webapp summary:focus-visible { outline: 3px solid var(--yld-navy); outline-offset: 5px; }
#yl-webapp .yld-description, #yl-webapp .yld-features { font-size: var(--yld-description-size); font-weight: 400; line-height: 1.85; color: var(--yld-muted); }
#yl-webapp .yld-card-title { font-size: var(--yld-card-title-size); line-height: 1.6; font-weight: 700; }
#yl-webapp .yld-section-title { font-size: 28px; line-height: 1.5; font-weight: 700; }
#yl-webapp .yld-kicker { font-size: 12px; line-height: 1.6; letter-spacing: .12em; font-weight: 700; color: var(--yld-blue); }
#yl-webapp .yld-section { margin-top: 64px; scroll-margin-top: 100px; }
#yl-webapp .yld-section-head { display: grid; gap: 10px; margin-bottom: 28px; }
#yl-webapp .yld-intro { display: grid; grid-template-columns: minmax(0,1.4fr) minmax(0,1fr); align-items: center; gap: 44px; padding: 40px; border: 1px solid var(--yld-line); border-radius: 18px; background: var(--yld-pale); }
#yl-webapp .yld-intro-copy { display: grid; gap: 18px; min-width: 0; }
#yl-webapp .yld-intro-title { font-size: clamp(30px,3vw,40px); line-height: 1.45; font-weight: 700; }
#yl-webapp .yld-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 6px; }
#yl-webapp .yld-button { display: inline-flex; align-items: center; justify-content: center; gap: 14px; min-height: 50px; padding: 12px 23px; border: 1px solid var(--yld-blue); border-radius: 28px; background: var(--yld-blue); color: #fff; font-size: 14px; font-weight: 700; line-height: 1.6; text-align: center; transition: transform .2s,box-shadow .2s; }
#yl-webapp .yld-button:hover { transform: translateY(-2px); box-shadow: 0 7px 18px rgba(8,123,210,.14); }
#yl-webapp .yld-button--outline { background: #fff; color: var(--yld-blue); }
#yl-webapp .yld-system { min-width: 0; display: grid; gap: 14px; }
#yl-webapp .yld-system-label { font-size: 14px; line-height: 1.7; font-weight: 500; color: var(--yld-muted); text-align: center; }
#yl-webapp .yld-system-item { position: relative; display: grid; gap: 3px; padding: 18px 18px 18px 66px; border: 1px solid var(--yld-line); border-radius: 12px; background: #fff; }
#yl-webapp .yld-system-item:not(:last-child)::after { content: '↓'; position: absolute; left: 50%; bottom: -19px; z-index: 1; width: 20px; height: 24px; color: var(--yld-blue); font-size: 20px; line-height: 24px; text-align: center; }
#yl-webapp .yld-system-number { position: absolute; left: 18px; top: 22px; display: flex; align-items: center; justify-content: center; width: 34px; height: 34px; border-radius: 50%; color: var(--yld-blue); background: #e5f3ff; font-size: 12px; font-weight: 700; }
#yl-webapp .yld-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; }
#yl-webapp .yld-card { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; min-width: 0; padding: 26px; border: 1px solid var(--yld-line); border-radius: 14px; background: #fff; }
#yl-webapp .yld-card-number { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; background: #e5f3ff; color: var(--yld-blue); border-radius: 50%; font-size: 14px; font-weight: 700; }
#yl-webapp .yld-cases { display: grid; gap: 28px; }
#yl-webapp .yld-case { display: grid; grid-template-columns: minmax(0,1.12fr) minmax(0,1fr); gap: 32px; align-items: center; padding: 28px; border: 1px solid var(--yld-line); border-radius: 16px; background: #fff; }
#yl-webapp .yld-case-body { display: grid; justify-items: start; gap: 14px; min-width: 0; }
#yl-webapp .yld-case-body .yld-card-title { scroll-margin-top: 100px; }
#yl-webapp .yld-label { font-size: 12px; line-height: 1.7; padding: 3px 10px; color: var(--yld-blue); border: 1px solid #cbe5fa; border-radius: 20px; background: var(--yld-pale); }
#yl-webapp .yld-browser { min-width: 0; overflow: hidden; border: 1px solid #cbdfee; border-radius: 12px; background: #fff; box-shadow: 0 10px 28px rgba(26,58,92,.055); }
#yl-webapp .yld-browser-bar { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-bottom: 1px solid var(--yld-line); background: #f5f9fc; color: #6c859d; font-size: 10px; line-height: 1.6; white-space: nowrap; }
#yl-webapp .yld-browser-dots { display: inline-flex; flex: 0 0 auto; gap: 4px; }
#yl-webapp .yld-browser-dots i { width: 6px; height: 6px; background: #bbd0e0; border-radius: 50%; }
#yl-webapp .yld-browser-number { margin-left: auto; color: var(--yld-blue); }
/* テーマ内のCSSから相対参照するため、テーマ名・WordPress設置先に依存しません。 */
#yl-webapp .yld-screenshot { width: 100%; background-repeat: no-repeat; background-position: center; background-size: contain; background-color: #fff; }
#yl-webapp .yld-screenshot--noas { aspect-ratio: 952 / 578; background-image: url('../images/web-app/noas-booking.webp'); }
#yl-webapp .yld-screenshot--sasamoto { aspect-ratio: 664 / 523; background-image: url('../images/web-app/sasamoto-booking.webp'); }
#yl-webapp .yld-screenshot--hsrt { aspect-ratio: 1264 / 792; background-image: url('../images/web-app/hsrt-booking.webp'); }
#yl-webapp .yld-browser figcaption { padding: 10px 12px; border-top: 1px solid var(--yld-line); color: var(--yld-muted); font-size: 11px; line-height: 1.7; }
#yl-webapp .yld-features { display: flex; flex-wrap: wrap; gap: 7px 14px; list-style: none; }
#yl-webapp .yld-features li { margin: 0; padding-left: 17px; position: relative; }
#yl-webapp .yld-features li::before { content: '✓'; position: absolute; left: 0; color: var(--yld-blue); font-size: 13px; font-weight: 700; }
#yl-webapp .yld-features li::marker { content: ''; }
#yl-webapp .yld-text-link { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 700; }
#yl-webapp .yld-text-link:hover { text-decoration: underline; text-underline-offset: 3px; }
#yl-webapp .yld-note { margin-top: 14px; font-size: 12px; line-height: 1.8; color: var(--yld-muted); }
#yl-webapp .yld-flow { padding: 32px; background: var(--yld-pale); border: 1px solid var(--yld-line); border-radius: 16px; }
#yl-webapp .yld-steps { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 24px; list-style: none; }
#yl-webapp .yld-step { min-width: 0; display: grid; align-content: start; gap: 12px; margin: 0; }
#yl-webapp .yld-step-number { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: 50%; background: #fff; border: 1px solid #cbe5fa; color: var(--yld-blue); font-size: 14px; font-weight: 700; }
#yl-webapp .yld-faq { border-top: 1px solid var(--yld-line); }
#yl-webapp .yld-faq details { padding: 22px 0; border-bottom: 1px solid var(--yld-line); }
#yl-webapp .yld-faq summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; cursor: pointer; font-size: 16px; line-height: 1.8; font-weight: 700; color: var(--yld-navy); list-style: none; }
#yl-webapp .yld-faq summary::-webkit-details-marker { display: none; }
#yl-webapp .yld-faq summary::after { content: '+'; flex: 0 0 24px; color: var(--yld-blue); font-size: 24px; line-height: 1; text-align: center; }
#yl-webapp .yld-faq details[open] summary::after { content: '−'; }
#yl-webapp .yld-faq details .yld-description { padding-top: 14px; padding-right: 44px; }
#yl-webapp .yld-contact { display: grid; justify-items: center; gap: 18px; padding: 40px 28px; text-align: center; background: var(--yld-pale); border: 1px solid var(--yld-line); border-radius: 16px; }
#yl-webapp .yld-sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
body:has(#yl-webapp) .yl-page-wrap { max-width: 1200px; padding: 40px 32px 72px; }
@media (max-width: 1000px) {
  #yl-webapp .yld-intro { grid-template-columns: minmax(0,1.1fr) minmax(0,1fr); gap: 24px; padding: 28px; }
  #yl-webapp .yld-case { grid-template-columns: 1fr; gap: 24px; }
  #yl-webapp .yld-case-body { gap: 14px; }
  #yl-webapp .yld-grid { gap: 16px; }
  #yl-webapp .yld-card { padding: 22px; }
  #yl-webapp .yld-steps { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 28px; }
}
@media (max-width: 720px) {
  #yl-webapp .yld-intro { grid-template-columns: 1fr; gap: 28px; }
  #yl-webapp .yld-grid { grid-template-columns: 1fr; }
  #yl-webapp .yld-system { gap: 14px; }
  #yl-webapp .yld-system-label { text-align: left; }
  #yl-webapp .yld-section { margin-top: 48px; }
  #yl-webapp .yld-section-title { font-size: 25px; }
  #yl-webapp .yld-desktop-break { display: none; }
}
@media (max-width: 480px) {
  body:has(#yl-webapp) .yl-page-wrap { padding: 28px 18px 48px; }
  #yl-webapp .yld-intro { padding: 24px 20px; }
  #yl-webapp .yld-intro-title { font-size: 30px; }
  #yl-webapp .yld-actions, #yl-webapp .yld-button { width: 100%; }
  #yl-webapp .yld-button { padding: 12px 17px; }
  #yl-webapp .yld-case { padding: 20px 16px; }
  #yl-webapp .yld-browser-bar { padding: 9px; gap: 7px; font-size: 9px; }
  #yl-webapp .yld-browser-dots { gap: 3px; }
  #yl-webapp .yld-browser-dots i { width: 5px; height: 5px; }
  #yl-webapp .yld-steps { grid-template-columns: 1fr; }
  #yl-webapp .yld-flow { padding: 24px 20px; }
  #yl-webapp .yld-contact { padding: 30px 20px; }
  #yl-webapp .yld-faq details .yld-description { padding-right: 0; }
}
@media (prefers-reduced-motion: reduce) {
  #yl-webapp .yld-button { transition: none; }
}