/* SingulaNet corporate site — design tokens
   ink / ground / petrol / brass。外部フォント・外部CDNは読み込まない。 */
:root {
  --ground: #f3f6f6;
  --surface: #ffffff;
  --ink: #0f2a33;
  --ink-soft: #4a626a;
  --line: #d3dddd;
  --petrol: #14566b;
  --petrol-deep: #0c3b4a;
  --brass: #9a6f14;
  --band: #0f2a33;
  --band-ink: #eef4f4;
  --band-soft: #a9c0c4;
  --font-display: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "Noto Serif JP", serif;
  --font-body: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Yu Gothic", "Noto Sans JP", Meiryo, sans-serif;
  --font-data: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, monospace;
  --wrap: 1120px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ground: #0b1d23;
    --surface: #11282f;
    --ink: #e8f0f0;
    --ink-soft: #9fb6ba;
    --line: #24414a;
    --petrol: #6fc0d6;
    --petrol-deep: #9ad6e6;
    --brass: #d9ad4e;
    --band: #07151a;
    --band-ink: #e8f0f0;
    --band-soft: #8ea9ae;
  }
}
:root[data-theme="dark"] {
  --ground: #0b1d23;
  --surface: #11282f;
  --ink: #e8f0f0;
  --ink-soft: #9fb6ba;
  --line: #24414a;
  --petrol: #6fc0d6;
  --petrol-deep: #9ad6e6;
  --brass: #d9ad4e;
  --band: #07151a;
  --band-ink: #e8f0f0;
  --band-soft: #8ea9ae;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--petrol); text-underline-offset: 0.2em; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--brass); outline-offset: 3px; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 600; line-height: 1.45; text-wrap: balance; margin: 0; }
p { margin: 0; }

.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: 20px; }

/* header */
.site-head {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 10;
  background: var(--ground);
  border-bottom: 1px solid var(--line);
}
.site-head .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 6px 28px; padding-block: 14px; }
.brand { display: inline-flex; align-items: center; flex-wrap: wrap; gap: 4px 0; font-family: var(--font-display); font-size: 20px; letter-spacing: 0.04em; color: var(--ink); text-decoration: none; }
.brand img { display: block; height: 26px; width: auto; }
.brand small { font-family: var(--font-body); font-size: 11px; line-height: 1; color: var(--ink-soft); letter-spacing: 0.08em; margin-left: 10px; }
.nav { display: flex; flex-wrap: wrap; gap: 4px 22px; font-size: 14px; }
.nav a { color: var(--ink); text-decoration: none; padding-block: 4px; border-bottom: 1px solid transparent; }
.nav a:hover { border-bottom-color: var(--brass); }

/* hero (常に暗色。背景は assets/hero.js が canvas に描く) */
.hero { position: relative; overflow: hidden; color: #eef4f4; background: linear-gradient(120deg, #081a21 0%, #0c2c38 55%, #11475a 100%); }
.hero canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(8,26,33,0.92) 0%, rgba(8,26,33,0.7) 38%, rgba(8,26,33,0) 70%); pointer-events: none; }
.hero .wrap { position: relative; z-index: 1; padding-block: 112px 104px; }
.eyebrow { font-size: 13px; letter-spacing: 0.14em; color: #d9ad4e; margin-bottom: 18px; }
.hero h1 { font-size: clamp(34px, 5.6vw, 60px); letter-spacing: 0.03em; }
.hero .lead { margin-top: 24px; max-width: 33em; color: #c3d5d8; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.btn { display: inline-block; padding: 12px 26px; font-size: 15px; text-decoration: none; border: 1px solid var(--petrol-deep); border-radius: 2px; }
.btn-solid { background: var(--petrol-deep); color: var(--ground); }
.btn-line { color: var(--petrol-deep); background: transparent; }
.btn:hover { filter: brightness(1.12); }
.hero .btn-solid { background: #d9ad4e; border-color: #d9ad4e; color: #081a21; }
.hero .btn-line { border-color: #eef4f4; color: #eef4f4; }

/* policy notice band */
.notice { background: var(--band); color: var(--band-ink); }
.notice .wrap { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 20px; padding-block: 16px; font-size: 14px; }
.notice time { font-family: var(--font-data); color: var(--band-soft); font-size: 13px; }
.notice a { color: var(--band-ink); margin-left: auto; }

/* sections */
.sec { padding-block: 80px; border-bottom: 1px solid var(--line); }
.sec-head { display: grid; gap: 12px; margin-bottom: 44px; max-width: 46em; }
.sec-head .en { font-size: 12px; letter-spacing: 0.18em; color: var(--brass); }
.sec-head h2 { font-size: clamp(24px, 3.2vw, 32px); }
.sec-head p { color: var(--ink-soft); }

/* two pillars */
.pillars { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; border-top: 2px solid var(--ink); }
.pillar { padding: 32px 36px 36px 0; display: grid; gap: 16px; align-content: start; }
.pillar + .pillar { padding-left: 36px; padding-right: 0; border-left: 1px solid var(--line); }
.pillar .tag { font-size: 12px; letter-spacing: 0.14em; color: var(--ink-soft); }
.pillar h3 { font-size: 24px; }
.pillar ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 0; border-top: 1px solid var(--line); }
.pillar li { padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 15px; display: grid; grid-template-columns: 9.5em 1fr; gap: 12px; line-height: 1.7; }
.pillar li b { font-weight: 600; }
.pillar li span { color: var(--ink-soft); }
.more { font-size: 14px; }

/* end-to-end coverage diagram */
.flow-scroll { overflow-x: auto; }
.flow { min-width: 720px; display: grid; grid-template-columns: 11em repeat(5, minmax(0, 1fr)); row-gap: 10px; font-size: 14px; }
.flow .ph { grid-row: 1; text-align: center; padding: 10px 4px; border-bottom: 2px solid var(--ink); font-family: var(--font-display); font-size: 16px; }
.flow .rowlabel { grid-column: 1; align-self: center; font-size: 13px; color: var(--ink-soft); padding-right: 12px; line-height: 1.5; }
.flow .bar { align-self: center; padding: 9px 14px; font-size: 13px; line-height: 1.5; border-radius: 2px; }
.bar-consult { grid-column: 2 / 4; background: var(--petrol-deep); color: var(--ground); }
.bar-dev { grid-column: 3 / 6; background: var(--petrol); color: var(--ground); }
.bar-portal { grid-column: 2 / 7; background: transparent; border: 1px solid var(--brass); color: var(--ink); }
.bar-pro { grid-column: 5 / 7; background: var(--brass); color: var(--ground); }
.flow-note { margin-top: 18px; font-size: 13px; color: var(--ink-soft); }

/* strengths: 図版と文を左右に並べ、1行ごとに左右を入れ替える */
.strengths { display: grid; gap: 72px; }
.strength { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 56px; align-items: center; }
.strength:nth-child(even) .vis { order: 2; }
.vis { margin: 0; }
.vis img { display: block; width: 100%; height: auto; border-radius: 4px; }
.strength .body { display: grid; gap: 14px; }
.strength .en { font-size: 12px; letter-spacing: 0.18em; color: var(--brass); }
.strength h3 { font-size: clamp(22px, 2.8vw, 28px); }
.strength p { color: var(--ink-soft); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 6px 0 0; padding: 0; list-style: none; font-size: 13px; }
.chips li { border: 1px solid var(--line); background: var(--surface); padding: 3px 12px; }

/* SCIJ Portal block */
.portal { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 48px; align-items: start; }
.clock { display: flex; flex-wrap: wrap; gap: 8px 28px; font-family: var(--font-data); font-size: clamp(26px, 4vw, 38px); font-variant-numeric: tabular-nums; color: var(--ink); line-height: 1.3; }
.clock-cap { font-size: 13px; color: var(--ink-soft); margin-top: 6px; }
.cats { display: flex; flex-wrap: wrap; gap: 8px; margin: 24px 0 0; padding: 0; list-style: none; font-size: 13px; }
.cats li { border: 1px solid var(--line); padding: 3px 12px; background: var(--surface); }
.portal-copy { display: grid; gap: 18px; }
.portal-copy p { color: var(--ink-soft); }

/* news */
.news { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.news li { display: grid; grid-template-columns: 7.5em 1fr; gap: 8px 24px; padding: 18px 0; border-bottom: 1px solid var(--line); font-size: 15px; line-height: 1.7; }
.news time { font-family: var(--font-data); font-size: 13px; color: var(--ink-soft); font-variant-numeric: tabular-nums; padding-top: 2px; }
.news a { color: var(--ink); text-decoration: none; }
.news a:hover { text-decoration: underline; }
.draft { font-size: 11px; letter-spacing: 0.08em; border: 1px solid var(--brass); color: var(--brass); padding: 1px 8px; margin-left: 8px; white-space: nowrap; }

/* company */
.company { width: 100%; border-collapse: collapse; font-size: 15px; }
.company th, .company td { text-align: left; vertical-align: top; padding: 14px 0; border-top: 1px solid var(--line); font-weight: 400; }
.company th { width: 9em; color: var(--ink-soft); }
.company tr:last-child th, .company tr:last-child td { border-bottom: 1px solid var(--line); }

/* contact + footer */
.contact { background: var(--band); color: var(--band-ink); }
.contact .wrap { padding-block: 72px; display: grid; gap: 20px; justify-items: start; }
.contact h2 { font-size: clamp(24px, 3.2vw, 32px); }
.contact p { color: var(--band-soft); max-width: 40em; }
.contact .btn { border-color: var(--band-ink); color: var(--band-ink); margin-top: 8px; }
.site-foot { background: var(--band); color: var(--band-soft); border-top: 1px solid #24414a; font-size: 12px; }
.site-foot a { color: var(--band-soft); }
.site-foot .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; padding-block: 22px; }

/* subpages: ページ見出しは常に暗色の帯。右に図版を置く */
.page-head { color: #eef4f4; background: linear-gradient(120deg, #081a21 0%, #0c2c38 60%, #11475a 100%); }
.page-head .wrap { padding-block: 64px; display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 48px; align-items: center; }
.page-head .text { display: grid; gap: 18px; }
.crumb { font-size: 12px; color: #a9c0c4; }
.crumb a { color: #a9c0c4; }
.page-head h1 { font-size: clamp(28px, 4.2vw, 42px); letter-spacing: 0.02em; }
.page-head .lead { max-width: 40em; color: #c3d5d8; }
.split { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 48px; align-items: center; margin-bottom: 44px; }
.split .sec-head { margin-bottom: 0; }
.items { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 56px; margin: 0; }
.items div { padding: 22px 0; border-top: 1px solid var(--line); }
.items dt { font-weight: 600; margin-bottom: 6px; }
.items dd { margin: 0; color: var(--ink-soft); font-size: 15px; }
.steps { list-style: none; margin: 0; padding: 0; counter-reset: step; border-top: 2px solid var(--ink); }
.steps li { counter-increment: step; display: grid; grid-template-columns: 3em 10em 1fr; gap: 8px 20px; padding: 18px 0; border-bottom: 1px solid var(--line); font-size: 15px; line-height: 1.7; }
.steps li::before { content: counter(step, decimal-leading-zero); font-family: var(--font-data); color: var(--brass); font-size: 13px; padding-top: 3px; }
.steps b { font-family: var(--font-display); font-size: 17px; font-weight: 600; }
.steps span { color: var(--ink-soft); }
.status { display: inline-block; font-family: var(--font-body); font-size: 12px; letter-spacing: 0.08em; padding: 2px 10px; border: 1px solid var(--petrol); color: var(--petrol); vertical-align: middle; margin-left: 12px; white-space: nowrap; }
.status-dev { border-color: var(--brass); color: var(--brass); }
.prose { display: grid; gap: 18px; max-width: 44em; }
.prose p { color: var(--ink-soft); }
.callout { border-left: 3px solid var(--brass); padding: 4px 0 4px 20px; color: var(--ink); max-width: 44em; }
.note { font-size: 13px; color: var(--ink-soft); margin-top: 24px; max-width: 46em; }

/* news */
.year { font-size: 22px; margin: 48px 0 12px; }
.year:first-child { margin-top: 0; }
.art-meta { display: flex; gap: 16px; font-size: 13px; color: #a9c0c4; font-family: var(--font-data); }
.art-meta span { font-family: var(--font-body); border: 1px solid #4f7f8d; padding: 0 10px; }
.page-head h1.art-title { font-size: clamp(22px, 3vw, 32px); max-width: 34em; }
.article { max-width: 44em; display: grid; gap: 20px; overflow-wrap: anywhere; }
.article h2 { font-size: 22px; margin-top: 20px; }
.article h3 { font-size: 18px; margin-top: 8px; }
.article ul, .article ol { margin: 0; padding-left: 1.4em; display: grid; gap: 6px; }
.article .table-scroll { overflow-x: auto; }
.article table { border-collapse: collapse; font-size: 14px; min-width: 100%; }
.article th, .article td { border: 1px solid var(--line); padding: 8px 12px; text-align: left; vertical-align: top; }
.article th { background: var(--surface); font-weight: 600; }
.art-img { margin: 0; }
.art-img img { display: block; max-width: 100%; height: auto; border: 1px solid var(--line); }
.art-nav { display: flex; justify-content: space-between; gap: 16px; margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 14px; max-width: 44em; }

/* policy pages */
.policy { max-width: 46em; display: grid; gap: 14px; }
.policy h2 { font-size: 20px; margin-top: 28px; }
.policy ul, .policy ol { margin: 0; padding-left: 1.4em; display: grid; gap: 6px; }
.policy .meta { font-size: 13px; color: var(--ink-soft); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* contact form */
.page-head.solo .wrap { grid-template-columns: 1fr; }
.form { display: grid; gap: 22px; max-width: 44em; }
.field { display: grid; gap: 6px; }
.field label, .field .label { font-size: 14px; font-weight: 600; }
.req { font-size: 11px; font-weight: 400; color: var(--brass); border: 1px solid var(--brass); padding: 0 6px; margin-left: 8px; vertical-align: 1px; }
.field input[type="text"], .field input[type="email"], .field select, .field textarea { font: inherit; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 2px; padding: 10px 12px; width: 100%; }
.field textarea { min-height: 11em; resize: vertical; }
.field input, .field select, .field textarea, .consent input { scroll-margin-top: 96px; }
.field input:focus-visible, .field select:focus-visible, .field textarea:focus-visible { outline: 2px solid var(--brass); outline-offset: 1px; }
.field .hint { font-size: 13px; color: var(--ink-soft); }
.consent { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; }
.consent input { margin-top: 7px; }
button.btn { font: inherit; font-size: 15px; cursor: pointer; }
button.btn[disabled] { opacity: 0.55; cursor: default; }
.form-msg { border-left: 3px solid var(--brass); padding: 6px 0 6px 16px; font-size: 14px; }
.form-msg.err { border-left-color: #b3402a; }

@media (max-width: 820px) {
  .hero .wrap { padding-block: 72px 64px; }
  .hero::after { background: rgba(8,26,33,0.72); }
  .pillars, .portal, .strength, .split { grid-template-columns: 1fr; }
  .strength { gap: 24px; }
  .strengths { gap: 56px; }
  .strength:nth-child(even) .vis { order: 0; }
  .split { gap: 28px; }
  .pillar { padding: 28px 0; }
  .pillar + .pillar { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .pillar li { grid-template-columns: 1fr; gap: 2px; }
  .sec { padding-block: 56px; }
  .notice a { margin-left: 0; }
  .news li { grid-template-columns: 1fr; gap: 2px; }
  .company th { width: 6.5em; }
  .items { grid-template-columns: 1fr; }
  .steps li { grid-template-columns: 2.4em 1fr; }
  .steps li span { grid-column: 2; }
  .page-head .wrap { grid-template-columns: 1fr; gap: 28px; padding-block: 44px 40px; }
}