* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "YuGothic", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.85;
  text-rendering: optimizeLegibility;
  line-break: strict;
  word-break: normal;
  overflow-wrap: anywhere;
}
a { color: inherit; }
a:focus-visible, summary:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}
.skip-link {
  position: fixed;
  z-index: 100;
  top: var(--space-3);
  left: var(--space-3);
  padding: .7rem 1rem;
  background: var(--ink);
  color: var(--white);
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  width: min(calc(100% - 40px), var(--content));
  min-height: 76px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  border-bottom: 1px solid var(--rule);
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: .025em;
  text-decoration: none;
}
.brand-mark {
  width: 38px;
  height: 38px;
  display: block;
  flex: 0 0 auto;
}
.site-header nav, .site-footer nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.site-header nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--text-nav);
  font-size: 13px;
  text-decoration: none;
}
.site-header nav a:hover { color: var(--red-dark); }
.site-header .nav-login {
  padding-left: var(--space-4);
  border-left: 1px solid var(--rule);
  color: var(--ink);
  font-weight: 700;
}

.hero {
  width: min(calc(100% - 40px), var(--content));
  min-height: 720px;
  margin: 0 auto;
  padding: var(--space-7) 0 var(--space-8);
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(400px, .92fr);
  gap: clamp(48px, 7vw, 112px);
  align-items: center;
}
.edition, .section-number {
  margin: 0 0 var(--space-4);
  color: var(--red);
  font: 700 11px/1.4 ui-monospace, "SFMono-Regular", Consolas, monospace;
  letter-spacing: .14em;
}
.hero h1, h2 {
  font-family: "Yu Mincho", "Hiragino Mincho ProN", "YuMincho", serif;
  font-weight: 600;
  text-wrap: balance;
}
.hero h1 {
  max-width: 750px;
  margin: 0;
  font-size: clamp(48px, 6.2vw, 84px);
  line-height: 1.18;
  letter-spacing: -.055em;
}
.hero h1 > span,
.hero h1 > em {
  display: block;
}
.hero h1 em {
  color: var(--red-dark);
  font-style: normal;
  text-decoration-line: underline;
  text-decoration-color: var(--red);
  text-decoration-thickness: 2px;
  text-underline-offset: .12em;
  text-decoration-skip-ink: auto;
}
.hero-lead {
  max-width: 650px;
  margin: var(--space-5) 0 0;
  color: var(--text-lead);
  font-size: clamp(17px, 1.5vw, 19px);
  line-height: 2;
}
.hero-actions {
  margin-top: var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-5);
  flex-wrap: wrap;
}
.primary-action {
  min-height: 52px;
  padding: .8rem 1.3rem;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  background: var(--red-dark);
  border: 2px solid var(--red-dark);
  color: var(--white);
  font-weight: 700;
  text-decoration: none;
  transition: background-color 160ms ease-out, color 160ms ease-out;
}
.primary-action:hover { background: transparent; color: var(--red-dark); }
.text-action {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--text-action);
  text-decoration-color: var(--rule);
  text-underline-offset: .35em;
}
.text-action:hover { text-decoration-color: var(--red); }
.small-print { margin: var(--space-3) 0 0; color: var(--text-fine); font-size: 12px; }

.desk-scene { margin: 0; }
.manuscript {
  position: relative;
  min-height: 520px;
  padding: clamp(32px, 4.2vw, 58px);
  background:
    linear-gradient(90deg, transparent 39px, var(--red-guide) 40px, transparent 41px),
    repeating-linear-gradient(to bottom, transparent 0, transparent 33px, var(--gray-guide) 34px),
    var(--sheet);
  border: 1px solid var(--sheet-rule);
  box-shadow: 16px 20px 0 var(--paper-deep);
  transform: rotate(1.1deg);
}
.folio {
  padding-bottom: var(--space-3);
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid var(--ink);
  font: 700 11px/1.4 ui-monospace, monospace;
  letter-spacing: .08em;
}
.manuscript h2 {
  max-width: 380px;
  margin: var(--space-5) 0 var(--space-4);
  font-size: clamp(27px, 3vw, 42px);
  line-height: 1.4;
  letter-spacing: -.025em;
}
.manuscript > p:not(.margin-note):not(.proof-source) { max-width: 330px; color: var(--text-sheet); }
.redline {
  position: absolute;
  top: 225px;
  right: 30px;
  width: 128px;
  height: 80px;
  border: 2px solid var(--red);
  border-left-color: transparent;
  border-radius: 50%;
  transform: rotate(-8deg);
}
.margin-note {
  position: absolute;
  top: 298px;
  right: 18px;
  width: 125px;
  color: var(--red);
  font-family: "Yu Mincho", serif;
  font-size: 14px;
  line-height: 1.45;
  transform: rotate(-5deg);
}
.finding {
  position: absolute;
  right: clamp(28px, 4vw, 52px);
  bottom: 40px;
  left: clamp(46px, 5vw, 66px);
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.finding div { padding: .75rem .35rem; }
.finding div + div { border-left: 1px solid var(--rule); }
.finding dt { color: var(--muted-soft); font-size: 10px; }
.finding dd { margin: .2rem 0 0; font-family: "Yu Mincho", serif; font-size: 17px; font-weight: 700; }
.desk-scene figcaption {
  max-width: 450px;
  margin: var(--space-4) 0 0 var(--space-5);
  color: var(--muted-soft);
  font-size: 11px;
  line-height: 1.7;
}

.premise, .process, .evidence, .boundaries, .pricing, .faq, .service-overview {
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
}
.premise {
  padding: var(--space-7) 0;
  display: grid;
  grid-template-columns: 70px minmax(0, 1.2fr) minmax(300px, .8fr);
  gap: var(--space-5);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.premise h2, .section-heading h2, .evidence h2, .price-intro h2, .privacy h2, .closing h2 {
  margin: 0;
  font-size: clamp(34px, 4.5vw, 58px);
  line-height: 1.4;
  letter-spacing: -.035em;
}
.premise-copy p { margin: 0 0 var(--space-3); color: var(--muted-strong); }
.process { padding: var(--space-8) 0; }
.section-heading {
  display: grid;
  grid-template-columns: 70px minmax(0, 1fr) minmax(280px, 410px);
  gap: var(--space-5);
  align-items: start;
}
.section-heading > p:last-child { margin: .5rem 0 0; color: var(--muted); }
.process-list { margin: var(--space-7) 0 0 70px; padding: 0; list-style: none; }
.process-list li {
  min-height: 138px;
  padding: var(--space-5) 0;
  display: grid;
  grid-template-columns: 70px minmax(0, 1fr) 100px;
  gap: var(--space-4);
  align-items: start;
  border-top: 1px solid var(--rule);
}
.process-list li:last-child { border-bottom: 1px solid var(--rule); }
.step { color: var(--red); font: 500 36px/1 "Yu Mincho", serif; }
.process-list h3 { margin: 0 0 .35rem; font: 600 24px/1.5 "Yu Mincho", serif; }
.process-list p { max-width: 680px; margin: 0; color: var(--muted); }
.output { padding-top: .35rem; color: var(--red-dark); font-size: 12px; font-weight: 700; text-align: right; }

.evidence {
  padding: var(--space-8) 0;
  display: grid;
  grid-template-columns: minmax(0, .85fr) minmax(480px, 1.15fr);
  gap: clamp(48px, 8vw, 120px);
  align-items: center;
}
.evidence-copy > p:last-child { max-width: 450px; margin-top: var(--space-5); color: var(--muted); }
.proof-sheet {
  padding: clamp(30px, 4vw, 52px);
  background: var(--sheet);
  border: 1px solid var(--rule);
  box-shadow: 12px 14px 0 var(--paper-deep);
}
.proof-label { margin: 0; color: var(--red); font: 700 11px/1.4 ui-monospace, monospace; letter-spacing: .08em; }
.proof-sheet h3 { margin: var(--space-3) 0; font: 600 clamp(26px, 3vw, 36px)/1.45 "Yu Mincho", serif; }
.proof-summary { color: var(--muted-strong); }
.proof-rule { height: 1px; margin: var(--space-5) 0; background: var(--ink); }
.proof-sheet dl { margin: 0; }
.proof-sheet dl div { padding: .8rem 0; display: grid; grid-template-columns: 95px 1fr; border-bottom: 1px solid var(--rule); }
.proof-sheet dt { color: var(--muted-soft); font-size: 11px; }
.proof-sheet dd { margin: 0; }
.proof-source { margin: var(--space-4) 0 0; color: var(--muted-soft); font-size: 11px; }

.boundaries { padding: var(--space-8) 0; border-top: 1px solid var(--ink); }
.section-heading.compact { grid-template-columns: 70px 1fr; }
.boundary-columns { margin: var(--space-6) 0 0 70px; display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.boundary-columns > div { padding: var(--space-5); }
.boundary-columns > div + div { border-left: 1px solid var(--ink); }
.boundary-columns h3 { margin: 0 0 var(--space-4); font: 600 24px/1.5 "Yu Mincho", serif; }
.boundary-columns ul { margin: 0; padding: 0; list-style: none; }
.boundary-columns li { position: relative; padding: .55rem 0 .55rem 1.5rem; }
.boundary-columns li::before { content: "—"; position: absolute; left: 0; color: var(--red); }

.pricing { padding: var(--space-8) 0; display: grid; grid-template-columns: minmax(0, .7fr) minmax(500px, 1.3fr); gap: clamp(50px, 9vw, 135px); }
.price-intro > p:last-child { margin-top: var(--space-5); color: var(--muted); }
.price-lines article { padding: var(--space-5) 0; display: grid; grid-template-columns: 210px 1fr; gap: var(--space-5); border-top: 1px solid var(--ink); }
.price-lines article:last-child { border-bottom: 1px solid var(--ink); }
.price-lines article > div p { margin: 0; font-size: 12px; }
.price-lines h3 { margin: .25rem 0 0; color: var(--red-dark); font: 600 29px/1.3 "Yu Mincho", serif; }
.price-lines article > p { margin: 0; color: var(--muted); }

.privacy {
  padding: var(--space-8) max(20px, calc((100vw - var(--content))/2));
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(50px, 9vw, 140px);
  background: var(--green);
  color: var(--green-paper);
}
.section-number.light { color: var(--red-soft); }
.privacy > div:last-child > p { margin-top: .5rem; color: var(--green-text); }
.privacy ul { padding-left: 1.2rem; color: var(--green-paper); }
.privacy li { margin: .65rem 0; }
.privacy a { min-height: 44px; display: inline-flex; align-items: center; gap: 1rem; color: var(--white); font-weight: 700; text-underline-offset: .35em; }

.faq { padding: var(--space-8) 0; }
.faq-list { margin: var(--space-6) 0 0 70px; border-top: 1px solid var(--ink); }
.faq details { border-bottom: 1px solid var(--ink); }
.faq summary {
  min-height: 70px;
  padding: 1.25rem 3rem 1.25rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  cursor: pointer;
  font: 600 19px/1.5 "Yu Mincho", serif;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--red); font: 400 28px/1 sans-serif; }
.faq details[open] summary::after { content: "−"; }
.faq details p { max-width: 760px; margin: 0; padding: 0 0 var(--space-5); color: var(--muted); }

.service-overview {
  padding: var(--space-8) 0;
  display: grid;
  grid-template-columns: minmax(300px, .7fr) minmax(0, 1.3fr);
  gap: clamp(48px, 8vw, 120px);
  border-top: 1px solid var(--ink);
}
.overview-heading {
  align-self: start;
}
.overview-kicker {
  margin: 0 0 var(--space-3);
  color: var(--muted-soft);
  font: 700 10px/1.4 ui-monospace, "SFMono-Regular", Consolas, monospace;
  letter-spacing: .12em;
}
.service-overview h2 {
  margin: 0;
  font-size: clamp(34px, 3.6vw, 48px);
  line-height: 1.3;
  white-space: nowrap;
}
.overview-body > p {
  max-width: 760px;
  margin: 0 0 var(--space-4);
  color: var(--muted-strong);
}
.overview-summary {
  color: var(--ink) !important;
  font-size: clamp(17px, 1.7vw, 20px);
  line-height: 1.9;
}
.overview-facts {
  margin: var(--space-6) 0 0;
  border-top: 1px solid var(--ink);
}
.overview-facts div {
  padding: .9rem 0;
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: var(--space-4);
  border-bottom: 1px solid var(--rule);
}
.overview-facts dt {
  color: var(--muted-soft);
  font-size: 12px;
  font-weight: 700;
}
.overview-facts dd {
  margin: 0;
}
.overview-facts a {
  color: var(--red-dark);
  text-underline-offset: .25em;
}

.closing {
  padding: clamp(70px, 10vw, 140px) 20px;
  background: var(--red-dark);
  color: var(--cream);
  text-align: center;
}
.closing > p { margin: 0 0 var(--space-3); color: var(--red-pale); font-size: 13px; }
.closing h2 { margin-bottom: var(--space-5); }
.primary-action.inverse { background: var(--cream); border-color: var(--cream); color: var(--red-dark); }
.primary-action.inverse:hover { background: transparent; color: var(--cream); }
.closing > span { display: block; margin-top: var(--space-3); color: var(--red-muted); font-size: 11px; }

.site-footer {
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
  padding: var(--space-6) 0;
  display: grid;
  grid-template-columns: 1fr 1.4fr auto;
  gap: var(--space-5);
  align-items: center;
}
.site-footer p { margin: .5rem 0 0; color: var(--text-footer); font-size: 11px; }
.site-footer nav { justify-content: center; flex-wrap: wrap; }
.site-footer nav a { min-height: 36px; display: inline-flex; align-items: center; color: var(--text-footer-link); font-size: 11px; text-underline-offset: .25em; }
.site-footer .copyright { margin: 0; white-space: nowrap; }

@media (max-width: 900px) {
  .site-header nav a:not(.nav-login) { display: none; }
  .hero { min-height: auto; grid-template-columns: 1fr; padding-top: var(--space-6); }
  .desk-scene { max-width: 590px; }
  .premise, .section-heading { grid-template-columns: 50px 1fr; }
  .premise-copy, .section-heading > p:last-child { grid-column: 2; }
  .process-list, .boundary-columns, .faq-list { margin-left: 50px; }
  .evidence, .pricing, .privacy { grid-template-columns: 1fr; }
  .service-overview { grid-template-columns: 1fr; gap: var(--space-5); }
  .evidence { gap: var(--space-6); }
  .pricing { gap: var(--space-6); }
  .site-footer { grid-template-columns: 1fr; }
  .site-footer nav { justify-content: flex-start; }
}

@media (max-width: 620px) {
  :root { --space-8: 5rem; }
  body { font-size: 15px; }
  .site-header { width: min(calc(100% - 28px), var(--content)); }
  .wordmark { font-size: 13px; }
  .site-header nav { gap: var(--space-2); }
  .site-header .nav-login { padding-left: var(--space-2); }
  .hero, .premise, .process, .evidence, .boundaries, .pricing, .faq, .service-overview, .site-footer { width: min(calc(100% - 28px), var(--content)); }
  .hero h1 { font-size: clamp(38px, 11.8vw, 54px); }
  .hero-lead { line-height: 1.8; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .primary-action { width: 100%; }
  .text-action { justify-content: center; }
  .manuscript { min-height: 500px; padding: 30px 24px 120px 48px; box-shadow: 8px 10px 0 var(--paper-deep); }
  .redline { top: 235px; right: 8px; width: 95px; }
  .margin-note { top: 310px; right: 2px; width: 92px; font-size: 12px; }
  .finding { right: 20px; bottom: 24px; left: 48px; }
  .finding dd { font-size: 14px; }
  .desk-scene figcaption { margin-left: 0; }
  .premise, .section-heading, .section-heading.compact { grid-template-columns: 1fr; gap: var(--space-3); }
  .premise-copy, .section-heading > p:last-child { grid-column: 1; }
  .section-number { margin-bottom: 0; }
  .process-list, .boundary-columns, .faq-list { margin-left: 0; }
  .process-list li { grid-template-columns: 42px 1fr; }
  .output { grid-column: 2; text-align: left; }
  .evidence { grid-template-columns: minmax(0, 1fr); }
  .proof-sheet { box-shadow: 7px 8px 0 var(--paper-deep); }
  .proof-sheet dl div { grid-template-columns: 1fr; gap: .25rem; }
  .boundary-columns { grid-template-columns: 1fr; }
  .boundary-columns > div { padding: var(--space-5) 0; }
  .boundary-columns > div + div { border-top: 1px solid var(--ink); border-left: 0; }
  .price-lines article { grid-template-columns: 1fr; gap: var(--space-3); }
  .privacy { padding-right: 20px; padding-left: 20px; }
  .faq summary { font-size: 17px; }
  .overview-heading { display: block; }
  .overview-facts div { grid-template-columns: 1fr; gap: .25rem; }
  .site-footer nav { gap: .8rem 1.2rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }
}