/* FREX — quiet, practical, human. Shared across the existing site. */
:root {
  --primary: #20ade5;
  --primary-dark: #12627f;
  --primary-deep: #12627f;
  --primary-light: #b0dbe8;
  --primary-pale: #e6edef;
  --navy: #202522;
  --navy-soft: #2d3430;
  --ink: #202522;
  --muted: #5f6963;
  --faint: #63716a;
  --danger: #a82f27;
  --bg: #f3f2ed;
  --bg-soft: #eaece5;
  --border: #d3d6cf;
  --radius: 3px;
  --radius-sm: 2px;
  --shadow: none;
  --shadow-sm: none;
  --font-en: Arial, "Noto Sans JP", sans-serif;
}
body { background: var(--bg); }
a { text-underline-offset: .22em; }
.container { max-width: 1248px; padding-inline: 44px; }
.site-header { background: var(--bg); backdrop-filter: none; }
.site-header .inner { max-width: 1344px; height: 88px; padding-inline: 44px; }
.site-header .brand img { height: 32px; }
.global-nav { gap: 25px; }
.global-nav a { font-size: 12px; font-weight: 700; }
.global-nav .nav-cta { background: var(--ink); border-radius: 2px; padding: 12px 22px; }
.global-nav .nav-cta:hover { background: var(--primary-dark); }
.global-nav a[aria-current="page"] { text-decoration: underline; text-decoration-thickness: 2px; }
.nav-toggle { min-width: 44px; min-height: 44px; }
.btn { border-radius: 2px; box-shadow: none; font-size: 14px; }
.btn-primary { background: var(--ink); border-color: var(--ink); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); box-shadow: none; }
.btn-ghost { border-color: var(--ink); color: var(--ink); background: transparent; }
.eyebrow { color: var(--muted); font-size: 11px; letter-spacing: .12em; }
.accent, .service-hero-card .no { color: var(--primary-dark); }
.section.dark .eyebrow, .section.dark .accent { color: var(--primary-light); }
.compare-col.after .tag { background: var(--primary-dark); }
.section { padding-block: 88px; }
.section-title { letter-spacing: -.035em; font-weight: 700; }
.page-hero { background: var(--bg); padding-block: 70px 42px; border-bottom: 1px solid var(--border); }
.page-hero h1 { font-weight: 700; letter-spacing: -.045em; font-size: clamp(32px, 4.5vw, 58px); }
.page-hero + .section { padding-top: 64px; }
.mission-band, .cta-band { background: var(--ink); }
.mission-band::before { display: none; }
.mission-band .eyebrow, .cta-band .eyebrow { color: var(--primary-light); }
.mission-copy { font-weight: 700; }
.tag, .pf-item .step { border-radius: 2px; }
.service-hero-card, .service-sub, .strength, .case-card, .compare-col, .uc-card,
.pf-item, .commit, .security-card, .benefit, .plan, .contact-form, .promise {
  box-shadow: none; border-radius: 3px;
}
.uc-card::before { display: none; }
.service-hero-card, .pf-item { background: transparent; }
.service-hero-card:hover, .case-card:hover, .uc-card:hover { transform: none; box-shadow: none; }
.founder-photo { border-radius: 2px; box-shadow: none; }
.contact-form { background: #fbfbf7; }
.form-group input, .form-group select, .form-group textarea { border-radius: 2px; font-size: 16px; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { box-shadow: none; border-color: var(--primary-dark); }
.form-group :is(input, select, textarea):focus-visible { outline: 2px solid var(--primary-dark); outline-offset: 3px; }
.form-group ::placeholder { color: var(--muted); opacity: 1; }
.form-consent input { accent-color: var(--primary-dark); }
.contact-alt { color: var(--muted); }
.contact-alt a, .form-consent a { text-decoration: underline; }
.site-footer { background: var(--ink); color: #c3ccc5; }
.site-footer .ft-title { color: #c3ccc5; }
.site-footer .ft-cta .btn { background: #f3f2ed; color: var(--ink); }
.site-footer .legal, .site-footer .brand p { color: #c3ccc5; }
.skip-link { position: fixed; left: 20px; top: -100px; z-index: 1000; background: var(--ink); color: white; padding: 12px 20px; }
.skip-link:focus { top: 12px; }
html.js .reveal { opacity: 1; transform: none; transition: none; }
:focus-visible { outline: 3px solid var(--primary-dark); outline-offset: 5px; }
.site-footer :focus-visible, .cta-band :focus-visible, .section.dark :focus-visible { outline-color: var(--primary-light); }
.faq-item summary:focus-visible { outline-offset: -4px; }
.faq-item summary::before, .faq-item summary::after, .service-sub h4 .en { color: var(--primary-dark); }
.chat-mock .user { background: var(--primary-dark); }
@media (max-width: 1000px) { .global-nav { gap: 16px; } }
@media (max-width: 900px) {
  .site-header .inner { height: 72px; padding-inline: 24px; }
  .global-nav { top: 72px; background: var(--bg); gap: 0; box-shadow: none; visibility: hidden; pointer-events: none; }
  .global-nav { max-height: calc(100vh - 72px); max-height: calc(100dvh - 72px); overflow-y: auto; overscroll-behavior: contain; }
  .global-nav.open { visibility: visible; pointer-events: auto; }
  .global-nav a { font-size: 15px; padding-block: 16px; }
  html:not(.js) .nav-toggle { display: none; }
  html:not(.js) .site-header { position: static; }
  html:not(.js) .site-header .inner { height: auto; min-height: 72px; flex-wrap: wrap; padding-top: 16px; }
  html:not(.js) .global-nav { position: static; flex-basis: 100%; visibility: visible; pointer-events: auto; transform: none; max-height: none; margin-top: 12px; padding-inline: 0; }
}
@media (max-width: 600px) {
  .container { padding-inline: 24px; }
  .section { padding-block: 62px; }
  .page-hero { padding-block: 42px 30px; }
  .site-footer .cols { gap: 32px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

.card, .usecase, .problem, .feature, .faq-item { border-radius: 3px; box-shadow: none; }
.usecase .head, .pf-item .step { background: var(--ink); }
.card .icon { border-radius: 2px; }

/* Secondary pages share the same typographic rhythm as the new home and work pages. */
.subpage .page-hero { padding-block: 46px 70px; }
.subpage .page-hero > .container { display: grid; grid-template-columns: 1.05fr 1fr; column-gap: 76px; }
.subpage .page-hero .breadcrumb { grid-column: 1 / -1; margin-bottom: 46px; font-size: 11px; }
.subpage .page-hero .eyebrow { grid-column: 1; margin-bottom: 14px; }
.subpage .page-hero h1 { grid-column: 1; margin: 0; font-size: clamp(34px, 4.6vw, 64px); line-height: 1.25; }
.subpage .page-hero p:not(.breadcrumb) { grid-column: 2; grid-row: 2 / span 2; align-self: end; margin: 0; color: var(--muted); font-size: 15px; line-height: 2; }
.subpage .page-hero .hero-cta { grid-column: 2; gap: 12px; }
.subpage .page-hero .hero-cta .btn { padding: 12px 20px; }
.subpage .section { padding-block: 96px; }
.subpage .section-title { font-size: clamp(27px, 3.4vw, 42px); line-height: 1.45; max-width: 27em; }
.subpage .section-lead { max-width: 54em; line-height: 2; margin-bottom: 42px; }
.subpage .voice-grid { gap: 0; border-top: 1px solid var(--border); }
.subpage .voice { flex-basis: 45%; min-width: 0; padding: 22px 22px 22px 0; background: transparent; border: 0; border-bottom: 1px solid var(--border); border-radius: 0; box-shadow: none; }
.subpage .voice::before { display: none; }
.subpage .problem-conclusion { text-align: left; margin-top: 36px; }
.subpage .compare { gap: 0; margin-block: 44px 52px; border-block: 1px solid var(--border); }
.subpage .compare-col { border: 0; border-radius: 0; padding: 32px; }
.subpage .compare-col.before { background: transparent; padding-left: 0; }
.subpage .compare-col.after { background: var(--ink); box-shadow: none; }
.subpage .compare-col .tag { background: none; padding: 0; border-radius: 0; letter-spacing: .06em; }
.subpage .compare-col.after .tag { color: var(--primary-light); }
.subpage .compare-col h3 { font-size: clamp(19px, 2vw, 24px); }
.subpage .compare-col li { padding-left: 18px; }
.subpage .compare-col li::before { width: 6px; height: 1px; top: .8em; border-radius: 0; background: currentColor; }
.subpage .grid-3, .subpage .grid-2 { gap: 34px 44px; }
.subpage .card { padding: 28px 0 12px; background: transparent; border: 0; border-top: 1px solid var(--border); border-radius: 0; box-shadow: none; }
.subpage .card:hover { transform: none; box-shadow: none; }
.subpage .card .icon { width: auto; height: auto; display: block; border-radius: 0; background: transparent; font: 12px var(--font-en); color: var(--primary-dark); margin-bottom: 28px; letter-spacing: .08em; }
.subpage .card h3 { font-size: 21px; letter-spacing: -.025em; }
.subpage .card p { line-height: 2; }
.subpage .service-sub-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 44px; }
.subpage .service-sub { min-width: 0; padding: 22px 0 0; border: 0; border-top: 1px solid var(--border); border-radius: 0; background: none; }
.subpage .service-sub h4 .en { margin-bottom: 12px; }
.subpage .usecase-grid { gap: 48px 56px; }
.subpage .usecase { background: none; border: 0; border-top: 1px solid var(--border); border-radius: 0; overflow: visible; }
.subpage .usecase .head { background: none; color: var(--ink); padding: 24px 0 0; flex-direction: column-reverse; gap: 12px; }
.subpage .usecase .head .dept { color: var(--primary-dark); font-size: 10px; }
.subpage .usecase .head h3 { font-size: 17px; }
.subpage .usecase .body { padding: 22px 0 0; gap: 20px; }
.subpage .usecase .copy { font-size: 24px; color: var(--ink); }
.subpage .usecase .effect { border-top: 1px solid var(--border); background: none; padding: 18px 0 0; border-radius: 0; font-size: 12px; }
.subpage .table-scroll { border-radius: 0; box-shadow: none; }
.subpage .compare-table { background: transparent; }
.subpage .security-grid { counter-reset: security; gap: 32px 42px; }
.subpage .security-item { counter-increment: security; background: none; border: 0; border-top: 1px solid #55635a; border-radius: 0; padding: 24px 0 0; }
.subpage .security-item h3 { display: block; font-size: 17px; }
.subpage .security-item h3::before { content: counter(security, decimal-leading-zero); display: block; font: 12px var(--font-en); color: var(--primary-light); margin-bottom: 22px; }
.subpage .security-item p { line-height: 2; color: #c3ccc5; }
.subpage .step { grid-template-columns: 54px 1fr; gap: 28px; padding-block: 26px; border-top: 1px solid var(--border); }
.subpage .step::before { display: none; }
.subpage .step .badge { border: 0; border-radius: 0; width: auto; height: auto; align-self: start; align-items: flex-start; background: none; padding-top: 10px; }
.subpage .step .badge::after { font-size: 16px; }
.subpage .step h3 { margin-top: 0; }
.subpage .case-detail { background: transparent; border: 0; border-top: 1px solid var(--border); border-radius: 0; padding: 36px 0 0; margin-bottom: 70px; box-shadow: none; }
.subpage .case-detail .client-row { margin-bottom: 30px; }
.subpage .case-detail .client-label { border-radius: 0; background: transparent; padding: 0; font: 11px var(--font-en); letter-spacing: .08em; }
.subpage .case-detail .tag { border: 0; border-left: 1px solid var(--border); border-radius: 0; padding: 0 0 0 12px; }
.subpage .case-detail h2 { font-size: clamp(25px, 3.3vw, 38px); letter-spacing: -.035em; }
.subpage .case-detail > p, .subpage .case-detail ul { max-width: 58em; line-height: 2; }
.subpage .case-detail ul.points li::before, .subpage .feature-list li::before { content: ""; width: 6px; height: 1px; top: .95em; background: var(--primary-dark); }
.subpage .promise-flow { gap: 28px 34px; }
.subpage .pf-item { min-width: 0; flex-basis: 220px; padding: 24px 0 0; border: 0; border-top: 1px solid var(--border); border-radius: 0; background: transparent; }
.subpage .pf-item::before { position: static; display: block; background: none; color: var(--primary-dark); border-radius: 0; padding: 0; margin-bottom: 22px; }
.subpage .commit-list { gap: 32px 42px; }
.subpage .commit { flex-basis: 45%; min-width: 0; padding: 24px 0 0; background: none; border: 0; border-top: 1px solid #55635a; border-radius: 0; gap: 20px; }
.subpage .commit .ic { flex-basis: 28px; width: 28px; height: auto; display: block; border-radius: 0; background: none; color: var(--primary-light); font: 12px var(--font-en); padding-top: 4px; }
.subpage .commit p { color: #c3ccc5; line-height: 2; }
.subpage .chat-mock { border-radius: 0; box-shadow: none; background: #fbfbf7; }
.subpage .chat-mock .bubble { border-radius: 2px; }
.subpage .founder-flex { grid-template-columns: minmax(230px, .75fr) 1.25fr; gap: 76px; margin-top: 44px; }
.subpage .founder-photo img { width: 100%; height: auto; border-radius: 0; box-shadow: none; }
.subpage .founder-name { font-size: 32px; letter-spacing: -.04em; }
.subpage .founder-message { padding: 24px 0 0; border: 0; border-top: 1px solid var(--border); border-radius: 0; line-height: 2; }
.subpage .faq-list { gap: 0; border-top: 1px solid var(--border); }
.subpage .faq-item { border: 0; border-bottom: 1px solid var(--border); border-radius: 0; background: transparent; }
.subpage .faq-item summary { padding: 26px 48px 26px 0; font-size: 16px; }
.subpage .faq-item .answer { padding: 0 34px 28px; line-height: 2; }
.subpage .faq-item[open] { background: #f3f2ed; }
.subpage .cta-band { text-align: left; border-bottom: 1px solid #55635a; padding-block: 70px; }
.subpage .cta-band .container { display: grid; grid-template-columns: 1fr auto; column-gap: 56px; }
.subpage .cta-band h2 { grid-column: 1; }
.subpage .cta-band p { grid-column: 1; margin-bottom: 0; max-width: 45em; }
.subpage .cta-band .btn { grid-column: 2; grid-row: 1 / span 2; align-self: center; border-radius: 0; white-space: nowrap; }
@media (max-width: 900px) {
  .subpage .page-hero > .container { column-gap: 36px; }
  .subpage .founder-flex { grid-template-columns: 1fr; max-width: 600px; margin-inline: 0; gap: 40px; }
  .subpage .founder-photo { max-width: 340px; }
}
@media (max-width: 760px) {
  .subpage .page-hero { padding-block: 30px 44px; }
  .subpage .page-hero > .container { display: block; }
  .subpage .page-hero .breadcrumb { margin-bottom: 30px; }
  .subpage .page-hero h1 { max-width: 12em; margin-bottom: 24px; }
  .subpage .page-hero p:not(.breadcrumb) { font-size: 14px; }
  .subpage .section { padding-block: 60px; }
  .subpage .compare-col.before { padding: 28px 0; }
  .subpage .compare-col.after { padding: 28px 24px; }
  .subpage .usecase-grid { gap: 34px; }
  .subpage .service-sub-grid { gap: 24px; }
  .subpage .founder-flex { grid-template-columns: 1fr; max-width: 480px; gap: 32px; }
  .subpage .founder-photo { max-width: 340px; }
  .subpage .cta-band .container { display: block; }
  .subpage .cta-band .btn { margin-top: 28px; }
}
@media (max-width: 520px) {
  .subpage .voice { flex-basis: 100%; padding-right: 0; }
  .subpage .service-sub-grid { grid-template-columns: 1fr; }
  .subpage .commit { flex-basis: 100%; }
  .subpage .step { grid-template-columns: 28px 1fr; gap: 16px; }
  .subpage .step h3 small { display: block; margin: 6px 0 0; }
  .subpage .faq-item .answer { padding-inline: 0 14px; }
}