:root {
  --ink: #101113;
  --ink-2: #242529;
  --gray-900: #36373b;
  --gray-700: #66686d;
  --gray-500: #96989e;
  --gray-350: #c7c8cc;
  --gray-250: #dedfe2;
  --gray-150: #ececee;
  --gray-100: #f3f3f4;
  --gray-50: #f8f8f9;
  --white: #fff;
  --signal: #d84a50;
  --signal-soft: #fbeded;
  --page: 1260px;
  --radius-xl: 34px;
  --radius-lg: 25px;
  --radius-md: 17px;
  --shadow: 0 24px 70px rgba(16,17,19,.075);
  --ease: cubic-bezier(.2,.8,.2,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow-x: hidden; color: var(--ink); background: var(--white); font-family: -apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
body.menu-open, body.dialog-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input, textarea { color: inherit; font: inherit; }
button { cursor: pointer; }
img, svg { display: block; max-width: 100%; }
.page-width { width: min(calc(100% - 64px), var(--page)); margin: 0 auto; }
.progress { position: fixed; z-index: 100; top: 0; left: 0; width: 0; height: 2px; background: var(--signal); transition: width 70ms linear; }

.site-header { position: fixed; z-index: 50; top: 0; right: 0; left: 0; border-bottom: 1px solid transparent; background: rgba(255,255,255,.8); backdrop-filter: blur(22px) saturate(150%); -webkit-backdrop-filter: blur(22px) saturate(150%); transition: background 200ms ease,border-color 200ms ease; }
.site-header.scrolled { border-bottom-color: rgba(16,17,19,.08); background: rgba(255,255,255,.94); }
.header-inner { display: flex; min-height: 70px; align-items: center; justify-content: space-between; gap: 26px; }
.brand { display: inline-flex; align-items: center; gap: 11px; white-space: nowrap; font-size: 15px; font-weight: 780; letter-spacing: -.04em; }
.brand-mark { display: grid; width: 30px; height: 30px; place-items: center; border-radius: 50%; color: var(--white); background: var(--ink); font-size: 10px; letter-spacing: 0; }
.brand-context { padding-left: 12px; border-left: 1px solid var(--gray-250); color: var(--gray-500); font-size: 10px; font-weight: 550; letter-spacing: .04em; }
.site-nav { display: flex; align-items: center; gap: 26px; }
.site-nav a { position: relative; padding: 27px 0 24px; color: var(--gray-700); font-size: 12px; font-weight: 620; transition: color 180ms ease; }
.site-nav a::after { position: absolute; right: 0; bottom: 18px; left: 0; height: 2px; border-radius: 99px; background: var(--ink); content: ""; transform: scaleX(0); transform-origin: left; transition: transform 220ms var(--ease); }
.site-nav a:hover,.site-nav a.active { color: var(--ink); }
.site-nav a:hover::after,.site-nav a.active::after { transform: scaleX(1); }
.header-tools { display: flex; align-items: center; gap: 9px; }
.language-switch { display: inline-flex; min-height: 38px; align-items: center; justify-content: center; padding: 0 14px; border-radius: 999px; color: var(--gray-700); background: var(--gray-100); font-size: 10px; font-weight: 750; transition: color 180ms ease,background 180ms ease; }
.language-switch:hover { color: var(--white); background: var(--ink); }
.header-cta { display: inline-flex; min-height: 39px; align-items: center; justify-content: center; padding: 0 17px; border: 1px solid var(--gray-250); border-radius: 999px; background: var(--white); font-size: 11px; font-weight: 720; transition: color 180ms ease,background 180ms ease,transform 180ms ease; }
.header-cta:hover { color: var(--white); background: var(--ink); transform: translateY(-1px); }
.menu-toggle { display: none; width: 40px; height: 40px; padding: 0; border: 1px solid var(--gray-250); border-radius: 50%; background: var(--white); }
.menu-toggle span,.menu-toggle span::before,.menu-toggle span::after { display: block; width: 14px; height: 1px; margin: auto; background: var(--ink); content: ""; transition: transform 180ms ease; }
.menu-toggle span::before { transform: translateY(-5px); }
.menu-toggle span::after { transform: translateY(4px); }

.label { display: inline-flex; align-items: center; gap: 9px; margin: 0; color: var(--gray-700); font-size: 10px; font-weight: 780; letter-spacing: .13em; }
.label::before { width: 6px; height: 6px; border-radius: 50%; background: var(--signal); content: ""; }
.display { margin: 0; font-size: clamp(60px,6.6vw,96px); font-weight: 725; line-height: .98; letter-spacing: -.082em; }
.display em { color: var(--gray-500); font-style: normal; }
.lead { margin: 0; color: var(--gray-700); font-size: 17px; line-height: 1.8; letter-spacing: -.016em; }
.button { display: inline-flex; min-height: 47px; align-items: center; justify-content: center; gap: 9px; padding: 0 20px; border: 1px solid var(--gray-250); border-radius: 999px; background: var(--white); font-size: 11px; font-weight: 750; transition: transform 210ms var(--ease),box-shadow 210ms ease,background 210ms ease,color 210ms ease; }
.button::after { content: "↗"; font-size: 14px; }
.button:hover { transform: translateY(-2px); box-shadow: 0 11px 28px rgba(16,17,19,.1); }
.button-primary { color: var(--white); border-color: var(--ink); background: var(--ink); }
.button-primary:hover { background: var(--ink-2); }

.hero { min-height: 930px; padding: 158px 0 74px; background: linear-gradient(180deg,var(--white),var(--gray-50)); }
.hero-main { display: grid; min-height: 605px; grid-template-columns: 1.08fr .92fr; gap: 100px; align-items: center; }
.hero-copy { max-width: 800px; }
.hero-copy .display { margin-top: 28px; }
.hero-copy .lead { max-width: 690px; margin-top: 26px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 34px; }
.strategy-object { position: relative; min-height: 525px; padding: 29px; border: 1px solid var(--gray-150); border-radius: var(--radius-xl); background: rgba(255,255,255,.78); box-shadow: var(--shadow); }
.strategy-object::after { position: absolute; top: 28px; right: 28px; width: 8px; height: 8px; border-radius: 50%; background: var(--signal); box-shadow: 0 0 0 7px var(--signal-soft); content: ""; }
.object-title { margin: 0 0 23px; color: var(--gray-500); font-size: 9px; font-weight: 760; letter-spacing: .13em; }
.decision-orbit { position: relative; display: grid; height: 405px; place-items: center; }
.orbit-center { position: relative; z-index: 2; display: grid; width: 142px; height: 142px; place-items: center; border-radius: 50%; color: var(--white); background: var(--ink); text-align: center; font-size: 18px; font-weight: 700; line-height: 1.25; }
.orbit-ring { position: absolute; width: 300px; height: 300px; border: 1px solid var(--gray-250); border-radius: 50%; }
.orbit-ring::after { position: absolute; inset: 38px; border: 1px dashed var(--gray-250); border-radius: 50%; content: ""; }
.orbit-node { position: absolute; z-index: 3; display: grid; min-width: 95px; min-height: 48px; place-items: center; padding: 0 12px; border: 1px solid var(--gray-250); border-radius: 999px; background: var(--white); color: var(--gray-900); font-size: 11px; font-weight: 680; box-shadow: 0 7px 20px rgba(16,17,19,.05); }
.orbit-node:nth-of-type(1) { top: 4px; left: 50%; transform: translateX(-50%); }
.orbit-node:nth-of-type(2) { top: 78px; right: 4px; }
.orbit-node:nth-of-type(3) { right: 20px; bottom: 56px; }
.orbit-node:nth-of-type(4) { bottom: 2px; left: 50%; transform: translateX(-50%); }
.orbit-node:nth-of-type(5) { bottom: 56px; left: 20px; }
.orbit-node:nth-of-type(6) { top: 78px; left: 4px; }
.hero-scope { display: grid; grid-template-columns: repeat(5,1fr); margin-top: 55px; border-top: 1px solid var(--gray-250); }
.scope-item { padding: 22px 0; }
.scope-item + .scope-item { padding-left: 25px; border-left: 1px solid var(--gray-250); }
.scope-item strong { display: block; margin-bottom: 7px; font-size: 13px; }
.scope-item span { color: var(--gray-500); font-size: 9px; letter-spacing: .09em; }

.section { padding: 124px 0; }
.section-gray { background: var(--gray-50); }
.section-border { border-top: 1px solid var(--gray-150); }
.section-head { display: grid; grid-template-columns: 1.08fr .92fr; gap: 88px; align-items: end; margin-bottom: 64px; }
.section-head h2 { max-width: 820px; margin: 22px 0 0; font-size: clamp(47px,5vw,68px); font-weight: 715; line-height: 1.03; letter-spacing: -.07em; }
.page-hero h1 { max-width: 820px; margin: 22px 0 0; font-size: clamp(47px,5.6vw,76px); font-weight: 715; line-height: 1.03; letter-spacing: -.07em; }
.section-head > p:last-child { max-width: 510px; margin: 0; color: var(--gray-700); font-size: 15px; line-height: 1.82; }

.decision-map { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
.decision-card { position: relative; min-height: 335px; overflow: hidden; padding: 30px; border: 1px solid var(--gray-150); border-radius: var(--radius-lg); background: var(--white); transition: transform 250ms var(--ease),box-shadow 250ms ease,border-color 250ms ease; }
.decision-card:hover { border-color: var(--gray-250); transform: translateY(-4px); box-shadow: var(--shadow); }
.decision-card .number { color: var(--signal); font-size: 10px; font-weight: 800; }
.decision-card h3 { max-width: 300px; margin: 82px 0 14px; font-size: 29px; line-height: 1.12; letter-spacing: -.05em; }
.decision-card p { max-width: 340px; margin: 0; color: var(--gray-700); font-size: 13px; line-height: 1.72; }
.card-action { position: absolute; right: 29px; bottom: 26px; display: inline-flex; align-items: center; gap: 7px; padding: 0; border: 0; color: var(--gray-700); background: transparent; font-size: 10px; font-weight: 700; }
.card-action::after { content: "＋"; font-size: 15px; }

.record-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 14px; }
.record-feature { min-height: 535px; padding: 38px; border: 1px solid var(--gray-150); border-radius: var(--radius-xl); background: var(--white); }
.record-feature .number,.record-small .number { color: var(--signal); font-size: 10px; font-weight: 800; }
.record-feature h3 { max-width: 650px; margin: 136px 0 17px; font-size: 42px; line-height: 1.08; letter-spacing: -.06em; }
.record-feature > p { max-width: 650px; margin: 0; color: var(--gray-700); font-size: 14px; line-height: 1.75; }
.record-meta { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 29px; }
.chip { display: inline-flex; padding: 8px 11px; border-radius: 999px; color: var(--gray-700); background: var(--gray-100); font-size: 9px; }
.record-side { display: grid; gap: 14px; }
.record-small { min-height: 260px; padding: 28px; border: 1px solid var(--gray-150); border-radius: var(--radius-lg); background: var(--white); }
.record-small h3 { margin: 67px 0 12px; font-size: 25px; line-height: 1.14; letter-spacing: -.045em; }
.record-small p { margin: 0; color: var(--gray-700); font-size: 12px; line-height: 1.68; }

.operating-flow { display: grid; grid-template-columns: repeat(7,1fr); overflow: hidden; border: 1px solid var(--gray-150); border-radius: var(--radius-lg); background: var(--white); }
.flow-step { min-height: 190px; padding: 23px 19px; border-right: 1px solid var(--gray-150); }
.flow-step:last-child { border-right: 0; }
.flow-step span { color: var(--signal); font-size: 9px; font-weight: 800; }
.flow-step h3 { margin: 60px 0 8px; font-size: 16px; line-height: 1.25; letter-spacing: -.03em; }
.flow-step p { margin: 0; color: var(--gray-500); font-size: 10px; line-height: 1.6; }

.truth-grid { display: grid; grid-template-columns: .78fr 1.22fr; gap: 80px; align-items: start; }
.truth-sticky { position: sticky; top: 118px; }
.truth-sticky h2 { margin: 22px 0 18px; font-size: clamp(43px,5vw,68px); line-height: 1.03; letter-spacing: -.07em; }
.truth-sticky p { margin: 0; color: var(--gray-700); font-size: 14px; line-height: 1.78; }
.truth-list { border-top: 1px solid var(--gray-250); }
.truth-item { display: grid; grid-template-columns: 55px 1fr; gap: 22px; padding: 28px 0; border-bottom: 1px solid var(--gray-150); }
.truth-item span { color: var(--signal); font-size: 10px; font-weight: 800; }
.truth-item h3 { margin: 0 0 8px; font-size: 18px; letter-spacing: -.03em; }
.truth-item p { margin: 0; color: var(--gray-700); font-size: 13px; line-height: 1.72; }

.page-hero { padding: 176px 0 93px; border-bottom: 1px solid var(--gray-150); background: var(--gray-50); }
.page-hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 90px; align-items: end; }
.page-hero p:last-child { max-width: 520px; margin: 0; color: var(--gray-700); font-size: 16px; line-height: 1.82; }
.page-path { display: inline-flex; margin-top: 34px; color: var(--gray-500); font-size: 9px; letter-spacing: .11em; }

.decision-chapters { display: grid; gap: 18px; }
.decision-chapter { display: grid; grid-template-columns: .72fr 1.28fr; gap: 74px; min-height: 620px; padding: 72px 0; border-bottom: 1px solid var(--gray-150); }
.decision-chapter:first-child { padding-top: 0; }
.chapter-title { position: sticky; top: 118px; align-self: start; }
.chapter-title span { color: var(--signal); font-size: 10px; font-weight: 800; }
.chapter-title h2 { max-width: 450px; margin: 22px 0 15px; font-size: 49px; line-height: 1.04; letter-spacing: -.066em; }
.chapter-title p { max-width: 420px; margin: 0; color: var(--gray-700); font-size: 13px; line-height: 1.72; }
.chapter-content { display: grid; align-content: start; gap: 13px; }
.chapter-panel { padding: 28px; border: 1px solid var(--gray-150); border-radius: var(--radius-md); background: var(--white); }
.chapter-panel strong { display: block; margin-bottom: 11px; color: var(--gray-500); font-size: 9px; letter-spacing: .1em; }
.chapter-panel h3 { margin: 0 0 12px; font-size: 21px; letter-spacing: -.04em; }
.chapter-panel p { margin: 0; color: var(--gray-700); font-size: 13px; line-height: 1.75; }
.chapter-output { display: grid; grid-template-columns: repeat(2,1fr); gap: 10px; }
.output-item { min-height: 155px; padding: 22px; border-radius: var(--radius-md); background: var(--gray-50); }
.output-item span { color: var(--signal); font-size: 9px; font-weight: 800; }
.output-item h4 { margin: 34px 0 8px; font-size: 16px; letter-spacing: -.03em; }
.output-item p { margin: 0; color: var(--gray-700); font-size: 11px; line-height: 1.65; }

.os-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 78px; align-items: start; }
.os-intro { position: sticky; top: 115px; }
.os-intro h2 { margin: 22px 0 18px; font-size: clamp(43px,5vw,68px); line-height: 1.03; letter-spacing: -.07em; }
.os-intro p { margin: 0; color: var(--gray-700); font-size: 14px; line-height: 1.78; }
.os-list { display: grid; gap: 10px; }
.os-item { padding: 27px; border: 1px solid var(--gray-150); border-radius: var(--radius-md); background: var(--white); }
.os-trigger { display: grid; width: 100%; grid-template-columns: 48px 1fr auto; align-items: center; padding: 0; border: 0; text-align: left; background: transparent; }
.os-trigger span { color: var(--signal); font-size: 10px; font-weight: 800; }
.os-trigger strong { font-size: 19px; letter-spacing: -.035em; }
.os-trigger i { color: var(--gray-500); font-size: 18px; font-style: normal; transition: transform 220ms ease; }
.os-item.open .os-trigger i { transform: rotate(45deg); }
.os-content { max-height: 0; overflow: hidden; transition: max-height 340ms var(--ease); }
.os-body { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin: 23px 0 0 48px; padding-top: 20px; border-top: 1px solid var(--gray-150); }
.os-body h4 { margin: 0 0 7px; color: var(--gray-500); font-size: 9px; letter-spacing: .1em; }
.os-body p { margin: 0; color: var(--gray-700); font-size: 11px; line-height: 1.65; }

.rhythm-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 13px; }
.rhythm-card { min-height: 330px; padding: 28px; border: 1px solid var(--gray-150); border-radius: var(--radius-lg); background: var(--white); }
.rhythm-card span { color: var(--signal); font-size: 10px; font-weight: 800; }
.rhythm-card h3 { margin: 88px 0 13px; font-size: 24px; letter-spacing: -.045em; }
.rhythm-card p { margin: 0; color: var(--gray-700); font-size: 12px; line-height: 1.72; }

.industry-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 35px; }
.tab-button { min-height: 38px; padding: 0 15px; border: 1px solid var(--gray-250); border-radius: 999px; color: var(--gray-700); background: var(--white); font-size: 10px; font-weight: 720; transition: color 180ms ease,background 180ms ease; }
.tab-button:hover,.tab-button.active { color: var(--white); border-color: var(--ink); background: var(--ink); }
.industry-case { display: none; grid-template-columns: .76fr 1.24fr; gap: 62px; padding: 42px; border: 1px solid var(--gray-150); border-radius: var(--radius-xl); background: var(--white); }
.industry-case.active { display: grid; }
.case-summary span { color: var(--signal); font-size: 10px; font-weight: 800; }
.case-summary h2 { margin: 25px 0 16px; font-size: 41px; line-height: 1.08; letter-spacing: -.06em; }
.case-summary p { margin: 0; color: var(--gray-700); font-size: 13px; line-height: 1.76; }
.case-note { margin-top: 25px!important; padding-top: 19px; border-top: 1px solid var(--gray-150); color: var(--gray-500)!important; font-size: 10px!important; }
.case-system { display: grid; grid-template-columns: repeat(2,1fr); gap: 10px; }
.case-block { min-height: 158px; padding: 22px; border-radius: var(--radius-md); background: var(--gray-50); }
.case-block span { color: var(--signal); font-size: 9px; font-weight: 800; }
.case-block h3 { margin: 30px 0 8px; font-size: 16px; letter-spacing: -.03em; }
.case-block p { margin: 0; color: var(--gray-700); font-size: 11px; line-height: 1.62; }

.profile-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 88px; align-items: start; }
.profile-card { position: sticky; top: 110px; padding: 35px; border: 1px solid var(--gray-150); border-radius: var(--radius-xl); background: var(--gray-50); }
.profile-mark { display: grid; width: 82px; height: 82px; place-items: center; border-radius: 50%; color: var(--white); background: var(--ink); font-size: 20px; font-weight: 780; }
.profile-card h2 { margin: 34px 0 8px; font-size: 33px; letter-spacing: -.055em; }
.profile-card p { margin: 0; color: var(--gray-700); font-size: 13px; line-height: 1.7; }
.profile-actions { display: grid; gap: 9px; margin-top: 30px; padding-top: 23px; border-top: 1px solid var(--gray-250); }
.profile-actions a { display: flex; justify-content: space-between; color: var(--gray-700); font-size: 11px; }
.profile-content > section { padding-bottom: 52px; margin-bottom: 52px; border-bottom: 1px solid var(--gray-150); }
.profile-content > section:last-child { border-bottom: 0; }
.profile-content h3 { margin: 0 0 20px; font-size: 28px; letter-spacing: -.05em; }
.profile-content p { margin: 0 0 16px; color: var(--gray-700); font-size: 14px; line-height: 1.82; }
.responsibility-list { border-top: 1px solid var(--gray-250); }
.responsibility { display: grid; grid-template-columns: 150px 1fr; gap: 24px; padding: 22px 0; border-bottom: 1px solid var(--gray-150); }
.responsibility span { color: var(--gray-500); font-size: 10px; }
.responsibility strong { display: block; margin-bottom: 7px; font-size: 15px; }
.responsibility p { margin: 0; font-size: 12px; }
.contact-panel { padding: 30px; border-radius: var(--radius-lg); background: var(--gray-50); }
.contact-panel p:last-child { margin-bottom: 0; }

.dialog { width: min(calc(100% - 32px),760px); max-height: min(84vh,760px); padding: 0; overflow: hidden; border: 0; border-radius: 26px; color: var(--ink); background: var(--white); box-shadow: 0 30px 100px rgba(16,17,19,.22); }
.dialog::backdrop { background: rgba(16,17,19,.36); backdrop-filter: blur(5px); }
.dialog-inner { max-height: min(84vh,760px); overflow-y: auto; padding: 36px; }
.dialog-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; }
.dialog-head span { color: var(--signal); font-size: 10px; font-weight: 800; }
.dialog-head h2 { max-width: 600px; margin: 16px 0 0; font-size: 35px; line-height: 1.1; letter-spacing: -.055em; }
.dialog-close { display: grid; flex: 0 0 auto; width: 40px; height: 40px; place-items: center; padding: 0; border: 1px solid var(--gray-250); border-radius: 50%; background: var(--white); font-size: 18px; }
.dialog-body { display: grid; gap: 19px; margin-top: 33px; padding-top: 26px; border-top: 1px solid var(--gray-150); }
.dialog-block h3 { margin: 0 0 8px; color: var(--gray-500); font-size: 9px; letter-spacing: .1em; }
.dialog-block p { margin: 0; color: var(--gray-700); font-size: 13px; line-height: 1.75; }

.contact-band { padding: 105px 0; color: var(--white); background: var(--ink); }
.contact-inner { display: flex; align-items: end; justify-content: space-between; gap: 55px; }
.contact-band .label { color: rgba(255,255,255,.58); }
.contact-band h2 { max-width: 890px; margin: 24px 0 0; font-size: clamp(44px,5.5vw,76px); line-height: 1.01; letter-spacing: -.075em; }
.contact-band .button { flex: 0 0 auto; color: var(--ink); border-color: var(--white); background: var(--white); }
.site-footer { color: var(--gray-700); background: var(--gray-50); }
.footer-main { display: flex; min-height: 128px; align-items: center; justify-content: space-between; gap: 30px; }
.footer-brand { display: inline-flex; align-items: center; gap: 11px; color: var(--ink); font-size: 14px; font-weight: 760; }
.footer-meta { display: flex; align-items: center; gap: 23px; font-size: 10px; }
.footer-legal { padding: 18px 0; border-top: 1px solid var(--gray-150); font-size: 9px; }
.not-found { display: grid; min-height: 72vh; padding: 150px 0 80px; place-items: center; background: linear-gradient(180deg,var(--white),var(--gray-50)); }
.not-found h1 { max-width: 800px; margin: 24px 0 20px; font-size: clamp(64px,9vw,128px); font-weight: 720; line-height: .94; letter-spacing: -.085em; }
.not-found-copy { max-width: 580px; margin: 0; color: var(--gray-700); font-size: 16px; line-height: 1.8; }
.not-found-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 34px; }
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 680ms var(--ease),transform 680ms var(--ease); }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 1050px) {
  .site-nav { gap: 15px; }
  .brand-context { display: none; }
  .hero-main,.section-head,.page-hero-grid,.truth-grid,.decision-chapter,.os-grid,.profile-layout { grid-template-columns: 1fr; gap: 48px; }
  .hero { min-height: auto; }
  .strategy-object { max-width: 640px; }
  .decision-map { grid-template-columns: repeat(2,1fr); }
  .record-grid { grid-template-columns: 1fr; }
  .record-side { grid-template-columns: repeat(2,1fr); }
  .operating-flow { grid-template-columns: repeat(4,1fr); }
  .flow-step { border-bottom: 1px solid var(--gray-150); }
  .truth-sticky,.chapter-title,.os-intro,.profile-card { position: static; }
  .rhythm-grid { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 760px) {
  .page-width { width: min(calc(100% - 32px),var(--page)); }
  .header-inner { min-height: 64px; }
  .header-tools { position: absolute; top: 12px; right: 16px; z-index: 2; }
  .header-cta { display: none; }
  .language-switch { min-height: 40px; padding: 0 13px; }
  .menu-toggle { display: block; }
  .site-nav { position: fixed; top: 64px; right: 0; bottom: 0; left: 0; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 20px 24px; background: rgba(255,255,255,.98); }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 18px 0; border-bottom: 1px solid var(--gray-150); font-size: 15px; }
  .site-nav a::after { display: none; }
  .hero { padding: 120px 0 62px; }
  .hero-main { gap: 42px; }
  .display { font-size: 42px; line-height: 1.01; letter-spacing: -.072em; }
  .lead { font-size: 15px; }
  .strategy-object { min-height: 440px; padding: 20px; border-radius: 25px; }
  .decision-orbit { height: 350px; }
  .orbit-center { width: 116px; height: 116px; font-size: 15px; }
  .orbit-ring { width: 252px; height: 252px; }
  .orbit-node { min-width: 78px; min-height: 42px; padding: 0 10px; font-size: 9px; }
  .orbit-node:nth-of-type(2) { right: -2px; }
  .orbit-node:nth-of-type(3) { right: 7px; }
  .orbit-node:nth-of-type(5) { left: 7px; }
  .orbit-node:nth-of-type(6) { left: -2px; }
  .hero-scope { grid-template-columns: repeat(2,1fr); margin-top: 42px; }
  .scope-item { border-top: 1px solid var(--gray-150); }
  .scope-item + .scope-item { padding-left: 18px; }
  .scope-item:nth-child(3),.scope-item:nth-child(5) { padding-left: 0; border-left: 0; }
  .section { padding: 82px 0; }
  .section-head { gap: 25px; margin-bottom: 42px; }
  .section-head h2,.page-hero h1,.truth-sticky h2,.os-intro h2 { font-size: 43px; }
  .decision-map,.record-side,.rhythm-grid { grid-template-columns: 1fr; }
  .decision-card { min-height: 300px; padding: 27px; }
  .decision-card h3 { margin-top: 63px; font-size: 27px; }
  .record-feature { min-height: 450px; padding: 28px; }
  .record-feature h3 { margin-top: 92px; font-size: 34px; }
  .operating-flow { grid-template-columns: 1fr; }
  .flow-step { min-height: 145px; border-right: 0; }
  .flow-step h3 { margin-top: 36px; }
  .page-hero { padding: 132px 0 68px; }
  .decision-chapter { min-height: auto; padding: 58px 0; }
  .chapter-title h2 { font-size: 42px; }
  .chapter-output,.os-body,.case-system { grid-template-columns: 1fr; }
  .os-body { margin-left: 0; }
  .industry-case { grid-template-columns: 1fr; gap: 35px; padding: 25px; }
  .case-summary h2 { font-size: 33px; }
  .responsibility { grid-template-columns: 1fr; gap: 7px; }
  .profile-card { padding: 28px; }
  .contact-inner { align-items: stretch; flex-direction: column; }
  .contact-band h2 { font-size: 45px; }
  .contact-band .button { width: 100%; }
  .footer-main { align-items: flex-start; flex-direction: column; justify-content: center; padding: 29px 0; }
  .footer-meta { align-items: flex-start; flex-direction: column; gap: 9px; }
  .dialog-inner { padding: 27px; }
  .dialog-head h2 { font-size: 29px; }
  .not-found { min-height: 68vh; padding: 118px 0 64px; }
  .not-found h1 { font-size: 64px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,*::before,*::after { transition-duration: .01ms!important; animation-duration: .01ms!important; animation-iteration-count: 1!important; }
  .reveal { opacity: 1; transform: none; }
}