/* laminar company site — design system v2 (editorial / takram-inspired)
   brand: Geist 400 / letter-spacing .35em / #111827 monochrome
   principles: no boxes, hairlines + whitespace only / quiet type (weight 400) /
               left-aligned, asymmetric grids / arrow text links instead of buttons */

:root {
  --ink: #111827;
  --sub: #6b7280;
  --faint: #9ca3af;
  --line: #e7e7e9;
  --bg: #ffffff;
  --max: 1280px;
  --pad: 40px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  overflow-x: hidden;
  font-family: "Geist", -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
  font-size: 14px;
  font-weight: 400;
}

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--pad); }

h1, h2, h3, h4 { font-weight: 400; }
strong { font-weight: 500; }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(8px);
}
.nav-inner {
  max-width: var(--max); margin: 0 auto; padding: 0 var(--pad);
  height: 60px; display: flex; align-items: center; justify-content: space-between;
}
.logotype {
  font-family: "Geist", sans-serif;
  font-weight: 400; font-size: 14px;
  letter-spacing: .35em; color: var(--ink);
  text-decoration: none;
}
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a {
  font-size: 12px; color: var(--ink);
  text-decoration: none; transition: opacity .2s;
}
.nav-links a:hover { opacity: .5; }
.nav-links a.nav-cta { color: var(--ink); }
.nav-toggle { display: none; }

/* ---------- hero ---------- */
.hero { padding: 96px 0 104px; }
.hero-grid {
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 64px;
  align-items: end;
}
.eyebrow {
  font-size: 11px; color: var(--faint);
  letter-spacing: .04em; margin-bottom: 20px;
}
h1.hero-title {
  font-size: clamp(30px, 3.6vw, 46px);
  line-height: 1.3; letter-spacing: -.01em; font-weight: 400;
}
.hero-side { padding-bottom: 6px; }
.hero-lead {
  font-size: 13px; color: var(--ink); max-width: 30em;
}
.hero-lead + .hero-lead { margin-top: 12px; }
.hero-actions { margin-top: 28px; display: flex; gap: 28px; flex-wrap: wrap; }

/* ---------- generative visuals (laminar streamlines) ---------- */
.hero-visual { margin: 88px calc(50% - 50vw) 0; }
.hero-visual img { width: 100%; height: auto; display: block; }
.case-card .case-visual {
  width: 100%; aspect-ratio: 8 / 5; object-fit: cover;
  display: block; margin-bottom: 20px;
}

/* arrow text link (replaces buttons) */
.arrow-link {
  display: inline-block; text-decoration: none;
  font-size: 13px; color: var(--ink);
  transition: opacity .2s;
}
.arrow-link::after { content: "\2192"; margin-left: .5em; }
.arrow-link:hover { opacity: .5; }
.arrow-link.quiet { color: var(--sub); }

/* ---------- sections ---------- */
section { padding: 96px 0; }
section .wrap { border-top: 1px solid var(--line); padding-top: 48px; }
section.no-rule .wrap { border-top: 0; padding-top: 0; }

.sec-head {
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 64px;
  margin-bottom: 64px; align-items: end;
}
h2.sec-title {
  font-size: clamp(22px, 2.4vw, 32px);
  line-height: 1.4; letter-spacing: -.005em; font-weight: 400;
}
.sec-lead { font-size: 13px; color: var(--sub); max-width: 30em; }

/* ---------- statement ---------- */
.statement { max-width: 720px; }
.statement p { font-size: 14px; color: var(--ink); margin-top: 20px; max-width: 40em; }
.statement .em { font-weight: 500; }

.value-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 48px; margin-top: 72px;
}
.value-cell { border-top: 1px solid var(--line); padding-top: 20px; }
.value-cell .num { font-size: 11px; color: var(--faint); }
.value-cell h3 { font-size: 15px; margin-top: 12px; font-weight: 500; }
.value-cell p { font-size: 12.5px; color: var(--sub); margin-top: 8px; }

/* ---------- services ---------- */
.svc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px 64px; }
.svc-card { border-top: 1px solid var(--line); padding-top: 24px; }
.svc-card .en { font-size: 11px; color: var(--faint); letter-spacing: .04em; }
.svc-card h3 { font-size: 17px; font-weight: 500; margin-top: 12px; }
.svc-card p { font-size: 13px; color: var(--sub); margin-top: 12px; max-width: 36em; }
.svc-card .deliv { margin-top: 16px; font-size: 12px; color: var(--faint); line-height: 1.9; }
.svc-card .deliv strong { color: var(--sub); font-weight: 400; }

/* ---------- cases ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px; }
.case-card {
  border-top: 1px solid var(--line); padding-top: 24px;
  text-decoration: none; color: inherit; display: block;
  transition: opacity .2s;
}
.case-card:hover { opacity: .55; }
.case-card .tag { font-size: 11px; color: var(--faint); }
.case-card h3 { font-size: 15px; font-weight: 500; margin-top: 12px; line-height: 1.6; }
.case-card p { font-size: 12.5px; color: var(--sub); margin-top: 10px; }
.case-more { margin-top: 56px; }

/* case detail (cases.html) */
.case-full { border-top: 1px solid var(--line); padding-top: 40px; }
.case-full + .case-full { margin-top: 88px; }
.case-full .tag { font-size: 11px; color: var(--faint); letter-spacing: .04em; }
.case-full h2 {
  font-size: clamp(19px, 2.2vw, 26px); font-weight: 400;
  margin-top: 14px; line-height: 1.5; letter-spacing: -.005em;
}
.case-lead { margin-top: 20px; font-size: 14px; max-width: 42em; }
.case-diagram { margin-top: 48px; }
.case-diagram svg { width: 100%; height: auto; display: block; }
.case-diagram text { font-family: inherit; }
.case-diagram .t { font-size: 13px; fill: var(--ink); }
.case-diagram .s { font-size: 11px; fill: var(--faint); }
.case-quote {
  margin-top: 48px;
  font-size: clamp(17px, 1.9vw, 22px);
  line-height: 1.8; max-width: 30em; letter-spacing: .01em;
}
.case-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; margin-top: 44px; }
.case-cols h4 { font-size: 11px; color: var(--faint); letter-spacing: .04em; margin-bottom: 10px; }
.case-cols p, .case-cols li { font-size: 13px; color: var(--ink); }
.case-cols ul { padding-left: 1.2em; }
.case-deliv { margin-top: 32px; font-size: 12px; color: var(--faint); }
.case-deliv strong { color: var(--sub); font-weight: 400; }

/* ---------- process ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 48px; }
.step { border-top: 1px solid var(--line); padding-top: 20px; }
.step .num { font-size: 11px; color: var(--faint); }
.step h3 { font-size: 15px; font-weight: 500; margin-top: 12px; }
.step p { font-size: 12.5px; color: var(--sub); margin-top: 8px; }

.ai-note { margin-top: 72px; max-width: 640px; }
.ai-note.spaced { margin-top: 48px; }
.steps.vertical { grid-template-columns: 1fr; gap: 28px; margin-top: 40px; max-width: 26em; }
.case-diagram.spaced { margin-top: 80px; }
.ai-note .head { font-size: 11px; color: var(--faint); letter-spacing: .04em; margin-bottom: 10px; }
.ai-note p { font-size: 13px; color: var(--ink); }

/* ---------- FAQ ---------- */
.faq-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 48px 64px; }
.faq-item { border-top: 1px solid var(--line); padding-top: 20px; }
.faq-item h3 { font-size: 14px; font-weight: 500; line-height: 1.7; }
.faq-item p { font-size: 12.5px; color: var(--sub); margin-top: 10px; }

/* ---------- contact ---------- */
.contact-inner { display: grid; grid-template-columns: 1.4fr 1fr; gap: 64px; }
.contact-inner .sec-lead { margin-top: 16px; }
.form { display: grid; gap: 32px; }
.form label { font-size: 12px; color: var(--sub); display: block; margin-bottom: 4px; letter-spacing: .04em; }
.form select {
  width: 100%; font: inherit; font-size: 14px;
  border: 0; border-bottom: 1px solid var(--line); border-radius: 0;
  padding: 8px 0; background: transparent; color: var(--ink);
}
.form select:focus { outline: none; border-bottom-color: var(--ink); }
.form input, .form textarea {
  width: 100%; font: inherit; font-size: 14px;
  border: 0; border-bottom: 1px solid var(--line); border-radius: 0;
  padding: 8px 0; background: transparent; color: var(--ink);
}
.form input:focus, .form textarea:focus { outline: none; border-bottom-color: var(--ink); }
.form textarea { min-height: 110px; resize: vertical; }
.form button {
  font: inherit; font-size: 13px; color: var(--ink);
  background: none; border: 0; cursor: pointer;
  justify-self: start; padding: 0;
  transition: opacity .2s;
}
.form button::after { content: "\2192"; margin-left: .5em; }
.form button:hover { opacity: .5; }

/* ---------- company ---------- */
.company-table { display: grid; grid-template-columns: 180px 1fr; max-width: 640px; }
.company-table > div { padding: 16px 0; border-top: 1px solid var(--line); font-size: 13px; }
.company-table .k { color: var(--faint); font-size: 11px; letter-spacing: .04em; padding-top: 19px; }

/* ---------- recruit ---------- */
.jd { border-top: 1px solid var(--line); padding-top: 40px; }
.jd + .jd { margin-top: 88px; }
.jd .role-tag { font-size: 11px; color: var(--faint); letter-spacing: .04em; }
.jd h3 { font-size: clamp(19px, 2.2vw, 26px); font-weight: 400; margin-top: 14px; line-height: 1.5; }
.jd .jd-intro { font-size: 13px; margin-top: 16px; max-width: 42em; }
.jd h4 { font-size: 11px; color: var(--faint); letter-spacing: .04em; margin: 36px 0 10px; }
.jd p, .jd li { font-size: 13px; color: var(--ink); }
.jd ul { list-style: none; display: grid; gap: 6px; }
.jd li { padding-left: 1.2em; text-indent: -1.2em; }
.jd li::before { content: "\2014"; margin-right: .5em; color: var(--faint); }
.work-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px 64px; }
.work-cell { border-top: 1px solid var(--line); padding-top: 20px; }
.work-cell h3 { font-size: 15px; font-weight: 500; }
.work-cell p { font-size: 12.5px; color: var(--sub); margin-top: 10px; }

.diagram-cap { font-size: 11px; color: var(--faint); margin-top: 14px; }

.fit-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px 64px; }
.fit { border-top: 1px solid var(--line); padding-top: 20px; }
.fit h3 { font-size: 15px; font-weight: 500; }
.fit ul { list-style: none; margin-top: 14px; display: grid; gap: 8px; }
.fit li { font-size: 13px; color: var(--ink); padding-left: 1.7em; position: relative; }
.fit li::before { position: absolute; left: 0; color: var(--faint); }
.fit.yes li::before { content: "\25cb"; }
.fit.no li::before { content: "\2715"; }

/* ---------- cta band (quiet, editorial) ---------- */
.cta-band { padding: 96px 0; }
.cta-band .wrap { border-top: 1px solid var(--line); padding-top: 48px; }
.cta-band .sec-head { margin-bottom: 0; }
.cta-band h2 { font-size: clamp(22px, 2.4vw, 32px); line-height: 1.5; font-weight: 400; }
.cta-band .sec-lead { margin-top: 16px; }
.cta-band .cta-action { margin-top: 32px; }

/* ---------- footer ---------- */
footer { padding: 96px 0 40px; }
footer .wrap { border-top: 1px solid var(--line); padding-top: 48px; }
.footer-top {
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 64px;
  margin-bottom: 96px;
}
.footer-statement .logotype { display: inline-block; margin-bottom: 20px; }
.footer-statement p { font-size: 13px; color: var(--ink); }
.footer-statement .jp { color: var(--sub); font-size: 12.5px; }
.footer-rows .row-label { font-size: 11px; color: var(--faint); letter-spacing: .04em; margin-bottom: 4px; }
.footer-row {
  display: flex; align-items: baseline; justify-content: space-between; gap: 16px;
  padding: 14px 0; border-bottom: 1px solid var(--line);
  text-decoration: none; color: var(--ink); font-size: 13px;
  transition: opacity .2s;
}
.footer-row:hover { opacity: .5; }
.footer-row .hint { color: var(--faint); font-size: 11.5px; flex: 1; text-align: right; }
.footer-row .arr { color: var(--ink); }
.footer-meta {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
  font-size: 11px; color: var(--faint);
}
.footer-meta a { color: var(--faint); text-decoration: none; }
.footer-meta a:hover { color: var(--ink); }
.footer-meta .links { display: flex; gap: 20px; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  :root { --pad: 24px; }
  .hero { padding: 64px 0 72px; }
  .hero-grid, .sec-head, .contact-inner, .footer-top { grid-template-columns: 1fr; gap: 24px; }
  .svc-grid, .work-grid, .case-cols, .fit-grid { grid-template-columns: 1fr; gap: 40px; }
  .case-grid, .faq-grid, .value-grid { grid-template-columns: 1fr; gap: 32px; }
  .steps { grid-template-columns: 1fr 1fr; gap: 40px 24px; }
  .steps.vertical { grid-template-columns: 1fr; }
  .company-table { grid-template-columns: 110px 1fr; }
  .case-diagram { overflow-x: auto; }
  .case-diagram svg { min-width: 640px; }
  section, .cta-band, footer { padding: 64px 0; }
  .sec-head { margin-bottom: 48px; }
  .case-full + .case-full, .jd + .jd { margin-top: 64px; }
  .nav-links { display: none; }
  .nav-toggle {
    display: block; font-size: 12px; color: var(--ink);
    background: none; border: 0; padding: 6px 0; font-family: inherit; cursor: pointer;
  }
  .nav.open .nav-links {
    display: flex; flex-direction: column; align-items: flex-start;
    position: absolute; top: 60px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: 24px; gap: 16px;
  }
}