/* 製品紹介サイト 共通スタイル（デッキと同じ配色: NAVY / SUB / PALE / GRAY） */
:root {
  --navy: #1F4E79; --sub: #4A7BA7; --pale: #EAF0F6; --gray: #6E7681; --ink: #23272E; --line: #D6DEEA;
  --bg: #FFFFFF; --card: #FFFFFF; --wrap: 1120px; --gutter: 16px; --radius: 10px;
  --shadow: 0 6px 20px rgba(31, 78, 121, 0.10);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif; color: var(--ink); background: var(--bg); line-height: 1.7; font-size: 16px; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--navy); }
h1, h2, h3 { line-height: 1.35; margin: 0 0 .5em; color: var(--navy); font-weight: 700; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.skip { position: absolute; left: -999px; top: 0; background: var(--navy); color: #fff; padding: 8px 12px; z-index: 100; }
.skip:focus { left: 8px; top: 8px; }
svg { width: 1.25em; height: 1.25em; vertical-align: -0.25em; flex: none; }

/* ── header ── */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.96); backdrop-filter: blur(6px); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; gap: 12px; min-height: 60px; }
.brand { font-weight: 700; color: var(--navy); text-decoration: none; font-size: 17px; margin-right: auto; white-space: nowrap; }
.nav-toggle { display: none; background: none; border: 1px solid var(--line); border-radius: 8px; padding: 6px 8px; color: var(--navy); cursor: pointer; }
.site-nav { display: flex; gap: 4px; }
.site-nav a { display: inline-flex; align-items: center; gap: 6px; padding: 8px 10px; border-radius: 8px; text-decoration: none; color: var(--ink); font-size: 14px; white-space: nowrap; }
.site-nav a b { color: var(--sub); font-size: 12px; }
.site-nav a:hover { background: var(--pale); }
.site-nav a.is-current { background: var(--navy); color: #fff; }
.site-nav a.is-current b { color: #cfe0f2; }

/* ── hero ── */
.hero { background: linear-gradient(180deg, var(--pale) 0%, #fff 100%); padding: 48px 0 32px; }
.kicker-text { color: var(--gray); font-weight: 700; letter-spacing: .2em; font-size: 13px; margin-bottom: 8px; }
.hero h1 { font-size: clamp(28px, 5vw, 44px); margin-bottom: 10px; }
.lead { font-size: clamp(15px, 2.2vw, 18px); color: var(--ink); max-width: 46em; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.chip { display: inline-flex; align-items: center; gap: 8px; background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 8px 14px 8px 10px; color: var(--navy); font-weight: 700; font-size: 14px; text-decoration: none; }
.chip b { color: var(--sub); font-size: 12px; }
.chip:hover { border-color: var(--sub); box-shadow: var(--shadow); }
.chip.static { font-weight: 500; }

/* ── sections ── */
.section { padding: 36px 0; }
.section-title { font-size: clamp(20px, 3vw, 26px); margin-bottom: 8px; }
.section-lead { color: var(--ink); font-size: 16px; margin-bottom: 18px; }

/* 工程図 */
.process { display: grid; gap: 10px; }
.process .steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.process .step { display: flex; align-items: center; justify-content: center; gap: 8px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 8px; font-weight: 700; color: var(--navy); font-size: 15px; }
.process .bars { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.process .bar { background: var(--pale); color: var(--navy); border: 1px solid var(--sub); border-radius: 8px; padding: 8px 12px; font-size: 13px; font-weight: 700; text-decoration: none; }
.process .bar.strong { background: var(--navy); color: #fff; border-color: var(--navy); }
.process a.bar:hover { opacity: .9; }
.process-note { margin-top: 14px; background: var(--pale); border-radius: var(--radius); padding: 14px 16px; font-size: 14px; }

/* ── product / feature blocks ── */
.products, .features { display: grid; gap: 0; padding-top: 8px; padding-bottom: 24px; }
.product, .feature { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 36px; align-items: center; padding: 36px 0; border-top: 1px solid var(--line); scroll-margin-top: 72px; }
.products > :first-child, .features > :first-child { border-top: 0; }
.product.rev .product-text, .feature.rev .feature-text { order: 2; }
.kicker { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; flex-wrap: wrap; }
.chip-no { background: var(--navy); color: #fff; font-weight: 700; font-size: 12px; border-radius: 6px; padding: 4px 10px; }
.product-name { color: var(--sub); font-weight: 700; font-size: 14px; }
.product h2, .feature h2 { font-size: clamp(20px, 2.6vw, 25px); }
.issue, .summary { background: var(--pale); border-radius: var(--radius); padding: 14px 16px; font-size: 15px; margin-bottom: 14px; }
.issue .label { display: block; font-size: 12px; font-weight: 700; color: var(--gray); margin-bottom: 4px; }
.feature h3 { font-size: 13px; color: var(--gray); margin: 0 0 6px; letter-spacing: .05em; }
.bullets { margin: 0 0 12px; padding: 0; list-style: none; }
.bullets li { position: relative; padding-left: 20px; margin: 0 0 8px; font-size: 15px; }
.bullets li::before { content: ""; position: absolute; left: 2px; top: .62em; width: 9px; height: 9px; background: var(--navy); border-radius: 2px; }
.note { display: flex; gap: 8px; color: var(--gray); font-size: 13.5px; line-height: 1.6; margin: 0 0 14px; }
.note svg { color: var(--sub); margin-top: 3px; }
.btn { display: inline-flex; align-items: center; gap: 8px; background: var(--navy); color: #fff; text-decoration: none; font-weight: 700; padding: 11px 18px; border-radius: 999px; font-size: 14px; }
.btn:hover { background: var(--sub); }
.btn-dl { background: #C9402F; color: #fff; }
.btn-dl:hover { background: #A8321F; }
.btn small { font-size: 11px; opacity: .8; font-weight: 500; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.shot { margin: 0; }
.shot a { display: block; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: #fff; box-shadow: var(--shadow); }
.shot img { width: 100%; }
.shot figcaption, .screen h3 { font-size: 13px; color: var(--gray); margin: 8px 0 0; text-align: center; }
.panel { grid-column: 1 / -1; background: var(--pale); border-radius: var(--radius); padding: 16px 20px; font-size: 14.5px; }
.panel b { display: block; color: var(--navy); margin-bottom: 4px; }
.panel p { margin: 0; }


/* 画面一覧 */
.screens { background: var(--pale); }
.screen-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.screen a { display: block; background: #fff; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.screen h3 { text-align: left; color: var(--navy); font-size: 15px; margin-top: 10px; }
.screen p { font-size: 14px; margin: 4px 0 0; }

/* 前後ナビ */
.pager { padding: 8px 0 40px; }
.pager .wrap { display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px; }
.pager a { display: flex; align-items: center; gap: 10px; text-decoration: none; border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; color: var(--navy); font-weight: 700; font-size: 14px; }
.pager a small { display: block; font-weight: 500; color: var(--gray); font-size: 12px; }
.pager .next { justify-content: flex-end; text-align: right; }
.pager a:hover { background: var(--pale); }

/* footer */
.site-footer { border-top: 1px solid var(--line); padding: 20px 0 32px; font-size: 13px; color: var(--gray); }
.site-footer .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; }
.site-footer .company { color: var(--navy); font-weight: 700; text-decoration: none; font-size: 14px; }
.site-footer .company:hover { text-decoration: underline; }
.site-footer .btn-contact { margin-left: auto; }

/* lightbox */
.lightbox { position: fixed; inset: 0; background: rgba(20, 30, 45, .9); display: flex; align-items: center; justify-content: center; z-index: 100; padding: 24px; }
.lightbox[hidden] { display: none; }
.lightbox img { max-width: 100%; max-height: 100%; width: auto; height: auto; border-radius: 8px; background: #fff; }
.lightbox-close { position: absolute; top: 12px; right: 12px; background: #fff; border: 0; border-radius: 50%; width: 40px; height: 40px; cursor: pointer; color: var(--navy); }

/* ── tablet ── */
@media (max-width: 1023px) {
  .product, .feature { padding: 28px 0; gap: 20px; }
  .process .step { font-size: 13px; padding: 10px 4px; flex-direction: column; gap: 4px; }
  .process .bar { font-size: 12px; padding: 6px 8px; }
  .site-nav a { padding: 8px 8px; font-size: 13px; }
}
/* ── mobile ── */
@media (max-width: 767px) {
  .nav-toggle { display: inline-flex; }
  .site-nav { display: none; position: absolute; left: 0; right: 0; top: 60px; background: #fff; border-bottom: 1px solid var(--line); flex-direction: column; padding: 8px var(--gutter) 12px; box-shadow: var(--shadow); }
  .site-nav.is-open { display: flex; }
  .site-nav a { font-size: 15px; padding: 12px 8px; border-radius: 8px; }
  .hero { padding: 32px 0 24px; }
  .product, .feature { grid-template-columns: 1fr; }
  .product.rev .product-text, .feature.rev .feature-text { order: 0; }
  .shot { order: -1; }
  .process .steps, .process .bars { grid-template-columns: 1fr; }
  .process .step { flex-direction: row; justify-content: flex-start; padding: 10px 12px; }
  .process .bar { grid-column: auto !important; }
  .screen-grid { grid-template-columns: 1fr; }
  .pager .wrap { grid-template-columns: 1fr; }
  .site-footer .btn-contact { margin-left: 0; width: 100%; justify-content: center; }
  .pager .next { justify-content: space-between; text-align: left; }
  .pager .prev { justify-content: space-between; flex-direction: row-reverse; }
}
@media (min-width: 768px) and (max-width: 1023px) { .screen-grid { grid-template-columns: repeat(2, 1fr); } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }