/* お問い合わせとサービス概要（index.html / app.html / requirements.html / security.html で共通）。
   色は各ページの :root（--teal / --navy / --line など）を使う。 */
.bx-contact { background: var(--paper); border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px; }
.bx-contact p { margin: 0 0 10px; font-size: 14px; color: var(--sub); }
.bx-contact-links { display: flex; flex-wrap: wrap; gap: 10px; }
.bx-contact-btn { max-width: 100%; display: inline-flex; align-items: center; gap: 6px; background: var(--navy); color: #fff; text-decoration: none; border-radius: 6px; padding: 8px 14px; font-size: 14px; font-weight: 700; }
.bx-contact-btn span:not(.ms) { min-width: 0; overflow-wrap: anywhere; }
.bx-contact-btn:hover { background: #2c3d52; }
.bx-contact-btn.outline { background: var(--paper); color: var(--navy); border: 1px solid var(--navy); }
.bx-contact-btn.outline:hover { background: var(--teal-soft); }
.bx-contact-btn .ms { font-size: 18px; }
.bx-overview { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(260px, 100%), 1fr)); gap: 10px; }
.bx-overview a { display: block; background: var(--paper); border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; text-decoration: none; color: inherit; }
.bx-overview a:hover { border-color: var(--teal); }
.bx-overview b { display: block; font-size: 15px; margin-bottom: 2px; color: var(--teal-dark); }
.bx-overview small { font-size: 12.5px; color: var(--sub); line-height: 1.6; }
.pf-ver { display: block; margin: -2px 0 2px; font-size: 12px; font-weight: 700; color: var(--sub); }
.pf-ver:empty { display: none; }
footer.wrap nav { display: flex; flex-wrap: wrap; gap: 4px 16px; margin-bottom: 6px; }
footer.wrap nav a { color: var(--sub); }

/* サービス概要のページ（requirements.html / security.html）。画面の見本ではない読み物のページ */
body.bx-doc {
  color-scheme: light;
  --teal: #00beb3; --teal-dark: #00857e; --teal-soft: #e6f7f6;
  --navy: #1d2a3a; --red: #d64545;
  --ink: #1f2933; --sub: #52606d; --mute: #8a96a3; --line: #d9dee4; --ground: #f4f6f7; --paper: #ffffff;
  --f-ui: "BIZ UDPGothic", "Noto Sans JP", sans-serif;
}
body.bx-doc { margin: 0; font-family: var(--f-ui); color: var(--ink); background: var(--ground); font-size: 15px; line-height: 1.75; }
.bx-doc * { box-sizing: border-box; }
.bx-doc a { color: var(--teal-dark); }
.bx-doc :focus-visible { outline: 2px solid #f5a524; outline-offset: 2px; }
.bx-doc .ms { font-family: "Material Symbols Outlined"; font-weight: normal; font-style: normal; font-size: 20px; line-height: 1; display: inline-block; white-space: nowrap; -webkit-font-smoothing: antialiased; vertical-align: middle; }
.bx-doc .wrap { width: min(100%, 880px); margin-inline: auto; padding-inline: 20px; }
.bx-doc .top { background: var(--teal); color: #fff; padding-block: 18px 28px; }
.bx-doc .brand { display: flex; align-items: center; gap: 10px; font-size: 14px; color: #fff; text-decoration: none; }
.bx-doc .brand svg { width: 22px; height: 22px; }
.bx-doc .brand b { font-size: 17px; letter-spacing: .03em; }
.bx-doc .brand .sep { width: 1px; height: 16px; background: rgba(255,255,255,.6); }
.bx-doc .crumb { margin-top: 22px; font-size: 13px; color: #e9fbfa; }
.bx-doc .crumb a { color: #fff; }
.bx-doc .top h1 { font-size: clamp(24px, 3.4vw, 32px); margin: 4px 0 2px; line-height: 1.35; }
.bx-doc .top p { margin: 0; color: #e9fbfa; font-size: 14px; }
.bx-doc main.wrap { padding-block: 26px 36px; display: grid; grid-template-columns: minmax(0, 1fr); gap: 22px; }
.bx-doc .card { background: var(--paper); border: 1px solid var(--line); border-radius: 8px; padding: 18px 20px; min-width: 0; }
.bx-doc .card h2 { font-size: 19px; margin: 0 0 10px; display: flex; gap: 8px; align-items: center; }
.bx-doc .card h2 .ms { color: var(--teal); }
.bx-doc .card h3 { font-size: 15px; margin: 14px 0 4px; }
.bx-doc .card p { margin: 0 0 6px; }
.bx-doc .card ul { margin: 0; padding-left: 1.3em; }
.bx-doc .card li { margin: 2px 0; }
.bx-doc .note { font-size: 13.5px; color: var(--sub); }
.bx-doc .ng { color: var(--red); font-weight: 700; }
.bx-doc dl.spec { display: grid; grid-template-columns: max-content 1fr; gap: 6px 18px; margin: 0; }
.bx-doc dl.spec dt { font-weight: 700; color: var(--sub); }
.bx-doc dl.spec dd { margin: 0; }
.bx-doc .diagram { margin: 14px 0 4px; }
.bx-doc .diagram img { display: block; width: 100%; max-width: 620px; height: auto; margin-inline: auto; }
.bx-doc h2.sec { font-size: 17px; margin: 6px 0 8px; }
.bx-doc footer.wrap { padding-block: 0 30px; font-size: 12px; color: var(--mute); }
@media (max-width: 560px) { .bx-doc dl.spec { grid-template-columns: 1fr; gap: 0 0; } .bx-doc dl.spec dd { margin-bottom: 8px; } .bx-doc .card { padding: 16px; } }