:root {
  --ink: #102033;
  --ink-soft: #42576b;
  --night: #070b14;
  --night-raised: #0b1320;
  --night-line: rgba(126, 174, 211, .22);
  --night-text: #f4f9ff;
  --night-muted: #b8c7d6;
  --paper: #f4f6f8;
  --paper-muted: #eaf0f4;
  --paper-line: rgba(21, 60, 89, .2);
  --accent: #31d7ff;
  --accent-dark: #006a84;
  --content: 1160px;
  --reading: 820px;
}

*, *::before, *::after { box-sizing: border-box; }
html { width: 100%; overflow-x: hidden; scroll-behavior: smooth; scroll-padding-top: 96px; }
body {
  margin: 0;
  width: 100%;
  overflow-x: hidden;
  color: var(--night-text);
  background: var(--night);
  font-family: "Noto Sans JP", "Yu Gothic", "Hiragino Sans", Meiryo, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  z-index: -2;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(760px 420px at 12% 2%, rgba(49, 215, 255, .07), transparent 68%),
    linear-gradient(rgba(113, 163, 203, .025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(113, 163, 203, .02) 1px, transparent 1px);
  background-size: auto, 44px 44px, 44px 44px;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
.content-wrap { width: min(var(--content), calc(100% - 56px)); margin-inline: auto; }
.reading-wrap { width: min(var(--reading), calc(100% - 56px)); margin-inline: auto; }

.scroll-progress {
  position: fixed;
  z-index: 500;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  transform: scaleX(0);
  transform-origin: left;
  pointer-events: none;
  background: linear-gradient(90deg, var(--accent), #8ceeff, #4b7cff);
}

/* Fixed site navigation */
.site-nav {
  position: fixed;
  z-index: 300;
  top: 12px;
  left: 50%;
  width: min(1240px, calc(100% - 36px));
  min-height: 68px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 10px 12px 10px 18px;
  border: 1px solid rgba(151, 198, 232, .24);
  border-radius: 14px;
  background: rgba(7, 11, 20, .84);
  backdrop-filter: blur(24px) saturate(1.35);
  box-shadow: 0 16px 50px rgba(0, 0, 0, .22);
}
.site-nav.scrolled { border-color: rgba(49, 215, 255, .5); background: rgba(7, 11, 20, .96); }
.brand { display: flex; align-items: center; gap: 11px; margin-right: auto; color: #eef8ff; font-weight: 800; }
.brand img { width: 38px; height: 38px; object-fit: contain; border-radius: 6px; background: #fff; }
.nav-links { display: flex; align-items: center; gap: 24px; color: #c1cfdd; font-size: 13px; font-weight: 700; }
.nav-links a:hover { color: #7feaff; }
.nav-cta, .final-cta, .mobile-sticky {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 13px 22px;
  border: 1px solid rgba(159, 239, 255, .82);
  border-radius: 8px;
  background: linear-gradient(135deg, #126f8c, #2857bf);
  color: #fff;
  font-weight: 800;
  line-height: 1.4;
}
.nav-cta:hover, .final-cta:hover { border-color: #d4f9ff; background: linear-gradient(135deg, #0d809f, #2e65d6); }
.mobile-sticky { display: none; }

/* Compact title block */
.page-intro {
  position: relative;
  isolation: isolate;
  padding: 150px 28px 84px;
  border-bottom: 1px solid var(--night-line);
  background: linear-gradient(180deg, #080e19, var(--night));
}
.page-intro::after {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(90deg, rgba(122, 175, 214, .07) 1px, transparent 1px);
  background-size: calc(100% / 12) 100%;
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 34px; padding: 0; list-style: none; color: #9fb0c2; font-size: 13px; }
.breadcrumb li { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumb li:not(:last-child)::after { content: "/"; color: #627589; }
.breadcrumb a { text-decoration: underline; text-underline-offset: 4px; }
.breadcrumb a:hover { color: #7feaff; }
.page-kicker, .eyebrow, .evidence-type {
  margin: 0;
  color: #69e4ff;
  font: 800 12px/1.4 "IBM Plex Mono", ui-monospace, monospace;
  letter-spacing: .15em;
}
.page-intro h1 { margin: 16px 0 0; font-size: clamp(40px, 5vw, 56px); line-height: 1.3; letter-spacing: -.045em; }
.page-lead { max-width: 44em; margin: 24px 0 0; color: var(--night-muted); font-size: 17px; line-height: 2; }

/* Detail sections */
.detail-section { padding: 92px 28px; border-bottom: 1px solid var(--night-line); }
.detail-section.light { color: var(--ink); background: var(--paper); border-bottom-color: var(--paper-line); }
.detail-section.light.muted { background: var(--paper-muted); }
.detail-section.dark { color: var(--night-text); background: var(--night); }
.section-heading { max-width: 760px; margin-bottom: 44px; }
.section-heading .eyebrow { margin-bottom: 15px; }
.light .eyebrow { color: var(--accent-dark); }
.section-heading h2, .closing-cta h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 42px);
  line-height: 1.42;
  letter-spacing: -.035em;
}
.section-heading > p:last-child { max-width: 42em; margin: 17px 0 0; color: var(--night-muted); }
.light .section-heading > p:last-child { color: var(--ink-soft); }

/* Numbered service ledger */
.ledger-list { border-top: 2px solid var(--accent-dark); }
.ledger-item {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 34px;
  padding: 38px 0;
  border-bottom: 1px solid var(--paper-line);
}
.ledger-index { display: flex; flex-direction: column; align-items: flex-start; gap: 7px; }
.ledger-index span { color: var(--accent-dark); font: 800 30px/1 "IBM Plex Mono", ui-monospace, monospace; }
.ledger-index small { color: #526a80; font-size: 11px; font-weight: 900; letter-spacing: .12em; }
.ledger-body { min-width: 0; }
.ledger-body h3 { margin: 0; color: var(--ink); font-size: clamp(22px, 2.4vw, 28px); line-height: 1.55; }
.ledger-body .summary { max-width: 42em; margin: 13px 0 0; color: var(--ink-soft); }
.deliverables { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin: 26px 0 0; border-top: 1px solid var(--paper-line); }
.deliverables > div { min-width: 0; padding: 20px 24px 0 0; }
.deliverables > div + div { padding-left: 24px; border-left: 1px solid var(--paper-line); }
.deliverables dt { color: var(--accent-dark); font-size: 13px; font-weight: 900; }
.deliverables dd { margin: 6px 0 0; color: #34495d; line-height: 1.85; }
.service-with-price { display: grid; grid-template-columns: minmax(0, 1fr) auto; column-gap: 28px; align-items: start; }
.service-with-price .deliverables, .service-with-price .detail-link { grid-column: 1 / -1; }
.inline-price { margin: 3px 0 0; color: var(--ink); white-space: nowrap; font-size: 18px; font-weight: 800; font-variant-numeric: tabular-nums; }
.inline-price strong { font-size: 25px; }
.detail-link {
  display: inline-flex;
  width: fit-content;
  margin-top: 22px;
  color: var(--accent-dark);
  font-weight: 900;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 5px;
}
.detail-link::after { content: " →"; margin-left: 6px; }
.detail-link:hover { color: #004f64; }

/* Process and price */
.process-list {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(49, 215, 255, .46);
  border-left: 1px solid var(--night-line);
}
.process-list.five { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.process-list.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.process-list.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.process-list li { min-width: 0; padding: 26px 22px; border-right: 1px solid var(--night-line); border-bottom: 1px solid var(--night-line); }
.process-list span { color: #69e4ff; font: 800 13px/1 "IBM Plex Mono", ui-monospace, monospace; letter-spacing: .12em; }
.process-list h3 { margin: 18px 0 0; color: #fff; font-size: 18px; line-height: 1.6; }
.process-list p { margin: 8px 0 0; color: var(--night-muted); font-size: 15px; line-height: 1.85; }
.evidence-note { margin: 26px 0 0; padding: 18px 20px; border-left: 3px solid var(--accent); background: rgba(49, 215, 255, .07); color: #dce9f4; font-weight: 800; }
.split-section { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: 64px; align-items: start; }
.split-section .section-heading { margin-bottom: 0; }
.price-sheet { padding: 32px 0 32px 34px; border-left: 3px solid var(--accent-dark); }
.price-label { margin: 0; color: var(--accent-dark); font-size: 13px; font-weight: 900; }
.price-value { margin: 9px 0 0; color: var(--ink); font-size: clamp(24px, 3.4vw, 34px); font-weight: 800; font-variant-numeric: tabular-nums; }
.price-value strong { font-size: clamp(38px, 5vw, 54px); letter-spacing: -.035em; }
.price-sheet > p:last-child { max-width: 38em; margin: 15px 0 0; color: var(--ink-soft); }

/* Evidence */
.evidence-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 2px solid var(--accent-dark); }
.evidence-item { min-width: 0; padding: 34px 34px 34px 0; border-bottom: 1px solid var(--paper-line); }
.evidence-item + .evidence-item { padding-left: 34px; border-left: 1px solid var(--paper-line); }
.evidence-type { color: var(--accent-dark); }
.evidence-item h3 { margin: 14px 0 0; color: var(--ink); font-size: 23px; line-height: 1.6; }
.evidence-item > p:not(.evidence-type) { margin: 14px 0 0; color: var(--ink-soft); }
.evidence-item ul { margin: 20px 0 0; padding: 0; list-style: none; border-top: 1px solid var(--paper-line); }
.evidence-item li { padding: 11px 0; border-bottom: 1px solid var(--paper-line); color: #34495d; }
.cases-link { margin-top: 26px; }

/* FAQ */
.faq-list { border-top: 2px solid var(--accent-dark); }
.faq-item { border-bottom: 1px solid var(--paper-line); }
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 4px;
  border: 0;
  background: transparent;
  color: var(--ink);
  text-align: left;
  font-size: 17px;
  font-weight: 800;
  cursor: pointer;
}
.faq-q::after { content: "+"; flex: 0 0 auto; color: var(--accent-dark); font-size: 28px; font-weight: 400; }
.faq-item.open .faq-q::after { content: "−"; }
.faq-a p { max-width: 42em; margin: 0; padding: 0 4px 24px; color: var(--ink-soft); }
.js-enabled .faq-a { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .3s ease; }
.js-enabled .faq-a > div { overflow: hidden; }
.js-enabled .faq-item.open .faq-a { grid-template-rows: 1fr; }

/* One closing conversion point */
.closing-cta { padding: 88px 28px; border-bottom: 1px solid var(--night-line); background: #08101c; }
.closing-cta .eyebrow { margin-bottom: 15px; }
.closing-cta h2 { color: #fff; }
.closing-cta p:not(.eyebrow) { max-width: 42em; margin: 18px 0 28px; color: var(--night-muted); }
.final-cta { min-width: 220px; }

.footer { padding: 62px 28px 104px; background: #050911; color: var(--night-muted); }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 34px; }
.footer h2 { margin: 0 0 12px; color: #f4f9ff; font-size: 18px; }
.footer p { margin: 0; }
.footer-links { display: grid; gap: 9px; }
.footer a:hover { color: #7feaff; }
.footer small { display: block; margin-top: 38px; padding-top: 22px; border-top: 1px solid var(--night-line); font-size: 13px; }

@media (max-width: 960px) {
  .nav-links { display: none; }
  .ledger-item { grid-template-columns: 110px minmax(0, 1fr); }
  .process-list.five { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .process-list.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split-section { grid-template-columns: 1fr; gap: 30px; }
}

@media (max-width: 720px) {
  body { padding-bottom: 82px; font-size: 15px; }
  .content-wrap, .reading-wrap { width: min(100% - 40px, var(--content)); }
  .site-nav { top: 8px; width: calc(100% - 20px); min-height: 60px; padding: 8px 11px; }
  .brand { min-width: 0; }
  .brand span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; }
  .brand img { flex: 0 0 auto; width: 34px; height: 34px; }
  .nav-cta { display: none; }
  .mobile-sticky { display: flex; position: fixed; z-index: 350; right: 10px; bottom: 9px; left: 10px; min-height: 58px; }
  .page-intro { padding: 116px 20px 62px; }
  .breadcrumb ol { margin-bottom: 28px; }
  .page-intro h1 { font-size: clamp(34px, 10vw, 44px); }
  .page-lead { margin-top: 18px; font-size: 15px; }
  .detail-section { padding: 68px 20px; }
  .section-heading { margin-bottom: 32px; }
  .section-heading h2, .closing-cta h2 { font-size: clamp(28px, 8.5vw, 36px); }
  .ledger-item { grid-template-columns: 1fr; gap: 18px; padding: 32px 0; }
  .ledger-index { flex-direction: row; align-items: baseline; gap: 12px; }
  .ledger-index span { font-size: 24px; }
  .ledger-body h3 { font-size: 22px; }
  .deliverables { grid-template-columns: 1fr; }
  .deliverables > div { padding: 17px 0; }
  .deliverables > div + div { padding-left: 0; border-top: 1px solid var(--paper-line); border-left: 0; }
  .service-with-price { grid-template-columns: 1fr; row-gap: 14px; }
  .service-with-price .deliverables, .service-with-price .detail-link { grid-column: auto; }
  .inline-price { margin: 0; white-space: normal; }
  .process-list.five, .process-list.four, .process-list.three { grid-template-columns: 1fr; }
  .process-list li { min-height: auto; padding: 22px 20px; }
  .price-sheet { padding: 26px 0 0; border-top: 3px solid var(--accent-dark); border-left: 0; }
  .price-value strong { font-size: 42px; }
  .evidence-list { grid-template-columns: 1fr; }
  .evidence-item { padding: 29px 0; }
  .evidence-item + .evidence-item { padding-left: 0; border-left: 0; }
  .faq-q { font-size: 16px; line-height: 1.7; }
  .closing-cta { padding: 72px 20px; }
  .final-cta { width: 100%; }
  .footer { padding: 54px 20px 114px; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition-duration: .01ms !important; }
  .scroll-progress { display: none; }
}