/* Tetsu Enterprises — local static draft. No remote dependencies. */
:root {
  --paper: #f5f1e8;
  --paper-deep: #ece7dc;
  --ink: #273334;
  --muted: #59605d;
  --oxide: #a64b2a;
  --rule: #c4c5ba;
  --dark-rule: #647170;
  --max: 1240px;
}
* { box-sizing: border-box; }
html { scroll-padding-top: 28px; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: Arial, Helvetica, sans-serif; font-size: 17px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-underline-offset: 5px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 3px solid var(--oxide); outline-offset: 6px; }
.dark-section a:focus-visible { outline-color: var(--paper); }
p, h1, h2, h3, h4 { margin: 0; }
p + p { margin-top: 20px; }
h1, h2, h3, h4 { line-height: 1.1; }
h1, h2 { font-weight: 500; letter-spacing: -0.055em; }
h2 { font-size: clamp(38px, 4.1vw, 59px); }
h3 { font-size: 25px; font-weight: 500; letter-spacing: -0.035em; }
h4 { font-size: 18px; font-weight: 600; letter-spacing: -0.025em; }
.wrap { width: min(calc(100% - 80px), var(--max)); margin-inline: auto; }
.section-space { padding-block: 100px; }
.eyebrow { font-size: 12px; font-weight: 600; letter-spacing: 0.12em; line-height: 1.5; text-transform: uppercase; }
.index { color: var(--oxide); font-family: ui-monospace, 'Courier New', monospace; font-size: 13px; letter-spacing: 0.02em; }
.lead { font-size: 24px; line-height: 1.4; letter-spacing: -0.025em; }
.text-link { display: inline-block; margin-top: 27px; font-size: 15px; font-weight: 600; }
.text-link span { margin-left: 14px; }
.skip-link { position: absolute; left: 20px; top: 12px; z-index: 5; padding: 12px 20px; background: var(--ink); color: var(--paper); transform: translateY(-200%); }
.skip-link:focus { transform: translateY(0); }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 36px; border-bottom: 1px solid var(--rule); padding-block: 10px 14px; }
.brand { display: block; flex: 0 0 320px; line-height: 0; }
.brand img { display: block; width: 320px; height: auto; }
.site-header nav { display: flex; flex-wrap: wrap; gap: 12px 28px; align-items: center; }
.site-header nav a { text-decoration: none; font-size: 14px; padding-block: 8px; }
.site-header nav a:hover { text-decoration: underline; }
.site-header nav a:last-child { font-weight: 600; }
.site-header nav span { margin-left: 4px; color: var(--oxide); }
.intro { padding-top: 77px; }
.intro > .eyebrow { display: flex; gap: 14px; align-items: center; color: var(--oxide); }
.short-rule { display: inline-block; width: 32px; height: 2px; background: currentColor; }
h1 { font-size: clamp(60px, 6.8vw, 98px); margin-top: 29px; }
h1 span { color: var(--oxide); }
.intro-bottom { display: grid; grid-template-columns: minmax(0, 680px) 1fr; gap: 100px; margin-top: 40px; }
.intro-copy > p:not(.lead) { max-width: 570px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 32px; margin-top: 29px; padding: 14px 22px; color: var(--paper); background: var(--ink); font-size: 15px; font-weight: 600; text-decoration: none; border: 1px solid var(--ink); }
.button:hover { background: var(--oxide); border-color: var(--oxide); }
.intro-note { border-left: 1px solid var(--rule); padding-left: 30px; margin-top: 5px; }
.intro-note > p:not(.eyebrow) { margin-top: 19px; font-size: 21px; line-height: 1.5; letter-spacing: -0.025em; }
.principles { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px 30px; margin-top: 75px; padding-block: 22px; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.principles p { margin: 0; font-size: 14px; }
.principles .index { margin-right: 13px; }
.section-heading { display: grid; grid-template-columns: 1fr 3fr; gap: 55px; margin-bottom: 52px; }
.section-heading > .eyebrow { margin-top: 10px; color: var(--oxide); }
.section-intro { max-width: 660px; margin-top: 26px; }
.service-row { display: grid; grid-template-columns: 1fr 1.4fr; gap: 60px; border-top: 1px solid var(--rule); padding-block: 35px; }
.service-name { display: flex; align-items: baseline; gap: 22px; }
.service-body > p { max-width: 640px; }
.scope-line { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--oxide); }
.scope-line span { display: block; margin-top: 8px; color: var(--muted); font-size: 14px; text-transform: none; letter-spacing: 0; font-weight: 400; }
.services-footnote { border-top: 1px solid var(--rule); padding-top: 22px; color: var(--muted); font-size: 14px; }
.dark-section { background: var(--ink); color: var(--paper); }
.dark-section .section-heading > .eyebrow { color: var(--paper); }
.dark-section .section-intro { color: #d7dcd3; }
.process { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 30px; }
.process li { border-top: 1px solid var(--dark-rule); padding-top: 21px; }
.step-number { font-family: ui-monospace, 'Courier New', monospace; font-size: 13px; color: #d7dcd3; }
.process h3 { margin-top: 26px; margin-bottom: 16px; }
.process p { font-size: 15px; color: #d7dcd3; }
.ai-note { display: grid; grid-template-columns: 1fr 3fr; gap: 55px; border-top: 1px solid var(--dark-rule); padding-top: 30px; margin-top: 50px; }
.ai-note h3 { font-size: 19px; }
.ai-note p { font-size: 15px; color: #d7dcd3; max-width: 780px; }
.reports { background: var(--paper-deep); }
.report-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 85px; align-items: center; }
.report-copy > .eyebrow { color: var(--oxide); margin-bottom: 27px; }
.report-copy h2 { font-size: clamp(38px, 3.55vw, 51px); }
.report-copy .lead { margin-top: 28px; }
.report-outline { background: var(--paper); padding: 28px 35px; border-top: 4px solid var(--oxide); }
.outline-header { display: flex; justify-content: space-between; align-items: center; gap: 20px; color: var(--oxide); }
.outline-header > span { font-size: 28px; line-height: 1; }
.report-outline > h3 { margin-top: 22px; font-size: 24px; }
.report-index { list-style: none; margin: 29px 0 0; padding: 0; }
.report-index li { display: flex; gap: 20px; border-top: 1px solid var(--rule); padding-block: 20px; }
.report-index .index { padding-top: 2px; }
.report-index p { font-size: 14px; margin-top: 8px; color: var(--muted); }
.outline-caption { border-top: 1px solid var(--rule); padding-top: 18px; font-size: 12px; line-height: 1.6; color: var(--muted); }
.about .section-heading { margin-bottom: 0; }
.about-copy { max-width: 710px; margin-top: 32px; }
.contact-inner { padding-block: 85px; }
.contact .eyebrow { color: #d7dcd3; margin-bottom: 28px; }
.contact h2 { font-size: clamp(50px, 5.6vw, 80px); }
.contact-bottom { display: flex; justify-content: space-between; align-items: flex-end; gap: 60px; padding-top: 34px; }
.contact-bottom > p { max-width: 460px; font-size: 16px; color: #d7dcd3; }
.contact-email { font-size: clamp(24px, 2.75vw, 38px); letter-spacing: -0.035em; white-space: nowrap; text-decoration: none; border-bottom: 1px solid var(--dark-rule); padding-bottom: 9px; }
.contact-email:hover { border-color: var(--paper); }
.contact-email span { margin-left: 30px; }
.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-block: 30px; font-size: 12px; color: var(--muted); }
.site-footer p { margin: 0; }
.site-footer > p:first-child { color: var(--ink); font-weight: 600; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.site-footer a span { margin-left: 8px; }
.site-header nav a[aria-current="page"] { text-decoration: underline; text-decoration-color: var(--oxide); text-decoration-thickness: 2px; }
.page-intro h1 { font-size: clamp(50px, 5.6vw, 80px); }
.page-intro > .lead { margin-top: 32px; }
.page-lead { max-width: 740px; margin-top: 22px; }
.page-links { display: flex; flex-wrap: wrap; gap: 14px 30px; margin-top: 36px; padding-block: 22px; border-block: 1px solid var(--rule); font-size: 15px; }
.detail-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 70px; }
.detail-grid h3 { margin-bottom: 22px; }
.detail-grid .subheading { margin-top: 32px; }
.detail-list { padding-left: 22px; margin: 0; }
.detail-list li + li { margin-top: 18px; }
.dark-section .detail-grid p { color: #d7dcd3; }
.summary-rule { border-top: 1px solid var(--dark-rule); padding-top: 30px; max-width: 800px; }
.summary-rule p { margin-top: 20px; color: #d7dcd3; }
.engagement-list { padding: 0; margin: 0; list-style: none; }
.engagement-list li { display: grid; grid-template-columns: 1fr 3fr; gap: 55px; border-top: 1px solid var(--rule); padding-block: 30px; }
.engagement-list h3 { margin-bottom: 20px; }
.engagement-list p { max-width: 750px; }
@media (max-width: 800px) {
  .detail-grid { grid-template-columns: 1fr; gap: 40px; }
  .engagement-list li { grid-template-columns: 1fr; gap: 16px; }
}
@media (max-width: 540px) {
  .page-intro h1 { font-size: clamp(34px, 9.3vw, 50px); }
  .page-links { gap: 12px 22px; }
}
@media (max-width: 1000px) {
  .site-header { gap: 20px; }
  .site-header nav { gap: 8px 20px; justify-content: flex-end; }
  .intro-bottom { gap: 50px; grid-template-columns: 1.65fr 1fr; }
  .section-heading, .ai-note { grid-template-columns: 1fr 3fr; gap: 30px; }
  .service-row { grid-template-columns: 1fr 1.4fr; gap: 35px; }
  .service-name { gap: 14px; }
  .report-layout { gap: 40px; }
  .report-outline { padding-inline: 25px; }
  .contact-bottom { gap: 35px; }
}
@media (max-width: 800px) {
  .wrap { width: calc(100% - 48px); }
  .site-header { flex-direction: column; align-items: flex-start; gap: 0; padding-bottom: 18px; }
  .brand { flex-basis: auto; }
  .site-header nav { justify-content: flex-start; gap: 4px 25px; }
  .intro { padding-top: 55px; }
  h1 { font-size: clamp(44px, 7.5vw, 60px); }
  .intro-bottom { gap: 35px; }
  .intro-note { padding-left: 22px; }
  .intro-note > p:not(.eyebrow) { font-size: 18px; }
  .lead { font-size: 22px; }
  .section-space { padding-block: 70px; }
  .section-heading { grid-template-columns: 1fr; gap: 22px; margin-bottom: 36px; }
  .section-heading > .eyebrow { margin-top: 0; }
  .service-name h3 { font-size: 23px; }
  .process { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; }
  .ai-note { grid-template-columns: 1fr; gap: 18px; }
  .report-layout { grid-template-columns: 1fr; gap: 40px; }
  .report-copy { max-width: 610px; }
  .report-outline { max-width: 610px; padding: 28px 35px; }
  .contact-bottom { flex-direction: column; align-items: flex-start; gap: 30px; }
  .contact-inner { padding-block: 70px; }
}
@media (max-width: 540px) {
  body { font-size: 16px; }
  .wrap { width: calc(100% - 40px); }
  .brand img { width: 280px; }
  .site-header nav { gap: 3px 22px; }
  .site-header nav a { font-size: 13px; }
  .intro { padding-top: 39px; }
  h1 { font-size: clamp(32px, 9.3vw, 50px); letter-spacing: -0.055em; margin-top: 25px; }
  h2 { font-size: 36px; }
  .intro-bottom { grid-template-columns: 1fr; gap: 36px; margin-top: 28px; }
  .intro-note { padding: 24px 0 0; border-left: 0; border-top: 1px solid var(--rule); margin: 0; }
  .intro-note > p:not(.eyebrow) { font-size: 20px; }
  .intro-note .text-link { margin-top: 19px; }
  .principles { display: grid; gap: 12px; margin-top: 36px; }
  .section-space { padding-block: 55px; }
  .section-intro { margin-top: 21px; }
  .service-row { grid-template-columns: 1fr; gap: 20px; padding-block: 28px; }
  .service-name h3 { font-size: 26px; }
  .process { grid-template-columns: 1fr; gap: 28px; }
  .process h3 { margin-top: 15px; }
  .ai-note { margin-top: 35px; }
  .report-copy h2 { font-size: 36px; }
  .report-outline { padding: 23px 20px; }
  .report-outline > h3 { font-size: 23px; }
  .report-index li { gap: 16px; }
  .report-index h4 { font-size: 17px; }
  .contact-inner { padding-block: 55px; }
  .contact h2 { font-size: 45px; }
  .contact-email { font-size: 25px; }
  .contact-email span { margin-left: 12px; }
  .site-footer { align-items: flex-start; flex-direction: column; gap: 9px; padding-block: 26px; }
}

@media print {
  body { font-size: 11pt; }
  .wrap { width: 100%; }
  .section-space, .contact-inner { padding-block: 24pt; }
  .dark-section { background: white; color: var(--ink); }
  .dark-section p, .dark-section .detail-grid p, .dark-section .summary-rule p, .dark-section .section-heading > .eyebrow, .dark-section .section-intro, .contact .eyebrow, .step-number { color: var(--ink); }
  .site-header nav, .skip-link, .button, .site-footer a { display: none; }
  .intro { padding-top: 24pt; }
  h1 { font-size: 40pt; }
  h2, .contact h2 { font-size: 28pt; }
  .process, .report-layout { break-inside: avoid; }
}