:root {
  --bg: #121a15;
  --bg2: #18231c;
  --line: #2c3b31;
  --ink: #e6e2d6;
  --sub: #a8ab9f;
  --accent: #c9a45c;
  --red: #c4553f;
  --paper: #ece4d0;
  --paper-ink: #2a241b;
  --mincho: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --gothic: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--gothic); font-size: 16px; line-height: 1.9; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-underline-offset: 3px; }
h1, h2, h3 { font-family: var(--mincho); font-weight: 700; line-height: 1.4; letter-spacing: .04em; }
h1 { font-size: clamp(28px, 6vw, 40px); margin: .2em 0 .6em; }
h2 { font-size: 22px; margin: 2.2em 0 .6em; }
p { margin: 0 0 1em; }
b { color: #f2ead6; }

/* header */
.site-head { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 16px; padding: 10px 20px; background: rgba(18, 26, 21, .94); border-bottom: 1px solid var(--line); backdrop-filter: blur(6px); }
.brand { display: flex; align-items: baseline; gap: 8px; color: var(--ink); text-decoration: none; font-family: var(--mincho); white-space: nowrap; }
.brand-main { font-size: 20px; font-weight: 700; letter-spacing: .08em; }
.brand-sub { font-size: 13px; color: var(--sub); }
.site-nav { display: flex; flex-wrap: wrap; gap: 4px 18px; margin-left: auto; font-size: 14px; }
.site-nav a { color: var(--sub); text-decoration: none; }
.site-nav a:hover, .site-nav a[aria-current] { color: var(--ink); }
.site-nav a[aria-current] { border-bottom: 1px solid var(--accent); }
.nav-toggle { display: none; margin-left: auto; background: none; border: 1px solid var(--line); color: var(--ink); font: inherit; font-size: 14px; padding: 4px 12px; border-radius: 3px; }
@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .site-nav { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; gap: 0; padding: 8px 20px 16px; background: var(--bg); border-bottom: 1px solid var(--line); }
  .site-nav a { padding: 8px 0; border-bottom: 1px solid var(--line); }
  .nav-open .site-nav { display: flex; }
}

/* layout */
.page { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
.wide { padding-bottom: 48px; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
.eyebrow { font-size: 13px; letter-spacing: .2em; color: var(--accent); margin: 0; }
.lead { font-family: var(--mincho); font-size: 19px; line-height: 1.9; }
.note { font-size: 14px; color: var(--sub); }
.next { margin-top: 3em; text-align: right; font-family: var(--mincho); }
.btn { display: inline-block; padding: 8px 20px; margin: 4px 4px 4px 0; border: 1px solid var(--accent); background: var(--accent); color: #1a1408; text-decoration: none; font-size: 15px; border-radius: 2px; }
.btn.ghost { background: none; color: var(--accent); }
.btn.is-off { border-color: var(--line); background: none; color: var(--sub); cursor: default; }

/* top */
.hero { max-width: 1080px; margin: 0 auto; padding: 40px 16px 56px; display: grid; grid-template-columns: minmax(0, 380px) minmax(0, 1fr); gap: 48px; align-items: center; }
.hero-img img { border-radius: 2px; box-shadow: 0 20px 60px rgba(0, 0, 0, .5); }
.hero h1 { font-size: clamp(40px, 8vw, 64px); letter-spacing: .12em; margin: .1em 0 .3em; }
.hero .lead { font-size: 22px; }
@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; gap: 24px; padding-top: 24px; }
  .hero-img { max-width: 280px; margin: 0 auto; }
}
.band { background: var(--bg2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-bottom: 40px; }
.band-inner { max-width: 1080px; margin: 0 auto; padding: 32px 16px; display: flex; gap: 32px; align-items: center; }
.band-inner h2 { margin-top: 0; }
.band-logo { width: 120px; aspect-ratio: 1; object-fit: cover; flex: none; border-radius: 50%; opacity: .9; }
@media (max-width: 600px) { .band-inner { flex-direction: column; align-items: flex-start; gap: 16px; } .band-logo { width: 80px; } }
.sec { font-size: 20px; border-left: 3px solid var(--accent); padding-left: 12px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.card { display: block; padding: 20px; border: 1px solid var(--line); background: var(--bg2); color: var(--ink); text-decoration: none; border-radius: 2px; transition: border-color .2s; }
.card:hover { border-color: var(--accent); }
.card h3 { margin: 0 0 .4em; font-size: 19px; }
.card p { margin: 0; font-size: 14px; color: var(--sub); }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-top: 24px; }
@media (max-width: 760px) { .split { grid-template-columns: 1fr; gap: 0; } }
.news { list-style: none; padding: 0; margin: 0; font-size: 15px; }
.news li { border-bottom: 1px solid var(--line); padding: 8px 0; }
.news time { color: var(--sub); margin-right: 16px; font-size: 14px; }

/* tables */
table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 1em 0 1.5em; }
th, td { border-bottom: 1px solid var(--line); padding: 10px 8px; text-align: left; vertical-align: top; }
thead th { color: var(--accent); font-weight: 600; font-size: 14px; white-space: nowrap; }
.spec th { width: 6em; color: var(--sub); font-weight: 500; white-space: nowrap; }
@media (max-width: 600px) {
  .list thead { display: none; }
  .list tr { display: block; border-bottom: 1px solid var(--line); padding: 8px 0; }
  .list td { display: block; border: 0; padding: 2px 0; }
  .list td:first-child { font-family: var(--mincho); font-weight: 700; font-size: 17px; }
}

/* figures */
figure { margin: 1.5em 0; }
figcaption { font-size: 13px; color: var(--sub); margin-top: 8px; text-align: center; grid-column: 1 / -1; }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.full img { width: 100%; }

/* timeline */
.timeline { list-style: none; padding: 0; margin: 2em 0; border-left: 2px solid var(--line); }
.timeline li { position: relative; padding: 0 0 28px 24px; }
.timeline li::before { content: ""; position: absolute; left: -7px; top: 9px; width: 12px; height: 12px; border-radius: 50%; background: var(--bg); border: 2px solid var(--accent); }
.t-when { font-family: var(--mincho); font-weight: 700; font-size: 18px; margin-right: 10px; }
.t-tag { font-size: 12px; border: 1px solid var(--line); color: var(--sub); padding: 1px 8px; border-radius: 10px; vertical-align: 2px; }
.timeline p { margin: 4px 0 0; }

/* documents */
.doc { background: var(--paper); color: var(--paper-ink); padding: 28px 28px 20px; margin: 2em 0; border-radius: 2px; font-family: var(--mincho); box-shadow: 0 8px 30px rgba(0, 0, 0, .35); scroll-margin-top: 80px; }
.doc h2 { margin: 0; font-size: 21px; color: var(--paper-ink); }
.doc-src { font-size: 13px; color: #6f6452; margin: 2px 0 16px; }
.doc dl { display: grid; grid-template-columns: 4.5em 1fr; gap: 8px 12px; margin: 0; }
.doc dt { color: #6f6452; }
.doc dd { margin: 0; }
.engi p { margin: 0 0 .4em; font-size: 17px; letter-spacing: .03em; }
.redact { background: var(--paper-ink); color: var(--paper-ink); letter-spacing: -.1em; user-select: none; border-radius: 1px; }
.doc.sealed { background: #2a2620; color: var(--sub); border: 1px dashed #5a5040; box-shadow: none; }
.doc.sealed h2 { color: var(--ink); }

/* questions */
.q { border-top: 1px solid var(--line); padding: 20px 0 8px; }
.q h2 { margin: 0 0 .4em; font-size: 21px; }
.q-no { margin: 0; color: var(--red); font-family: var(--mincho); font-size: 14px; letter-spacing: .2em; }
.q-ref { font-size: 14px; color: var(--sub); }

/* shop */
.product { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 28px; align-items: start; border-top: 1px solid var(--line); padding: 28px 0; }
.product:last-child { grid-template-columns: 1fr; }
.product h2 { margin-top: 0; }
.price { font-family: var(--mincho); font-size: 22px; color: var(--accent); }
.spec-line { font-size: 14px; color: var(--sub); }
@media (max-width: 640px) { .product { grid-template-columns: 1fr; } }

/* footer */
.site-foot { border-top: 1px solid var(--line); padding: 28px 16px 40px; text-align: center; font-size: 13px; color: var(--sub); }
.foot-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 24px; margin-bottom: 16px; font-size: 14px; }
.foot-note, .foot-copy { margin: 4px 0; }