/* New full-chain proposal. Layout follows the confirmed nine-chapter Blueprint. */
:root {
  --ink: #191713;
  --paper: #f2eee6;
  --paper-deep: #e8e0d3;
  --white: #fffdf8;
  --muted: #625b52;
  --red: #b33223;
  --red-bright: #ff8b70;
  --red-dark: #82291f;
  --gold: #f1cfab;
  --line: rgba(25, 23, 19, .2);
  --serif: "Songti SC", "Noto Serif CJK SC", "STSong", "SimSun", serif;
  --sans: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;
  --number: Georgia, "Times New Roman", serif;
  --wide: 1360px;
  --gutter: clamp(24px, 5vw, 80px);
  --bar-height: 66px;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --short: 180ms;
  --medium: 320ms;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--bar-height) + 20px); }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); -webkit-font-smoothing: antialiased; }
button, a, summary { -webkit-tap-highlight-color: transparent; touch-action: manipulation; }
button { font: inherit; }
a { color: inherit; text-underline-offset: 5px; }
button, summary { cursor: pointer; }
button:focus-visible, a:focus-visible, summary:focus-visible { outline: 3px solid var(--red-bright); outline-offset: 5px; }
::selection { background: var(--red); color: var(--white); }
p, h1, h2, h3 { margin: 0; }
h1, h2 { font-family: var(--serif); font-weight: 500; text-wrap: balance; }
h3 { font-size: 18px; font-weight: 600; }
[hidden] { display: none !important; }
.frame { width: min(calc(100% - var(--gutter) * 2), var(--wide)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 100; top: -80px; left: 20px; padding: 16px 20px; background: var(--white); color: var(--ink); }
.skip-link:focus { top: 12px; }
.document-bar { position: fixed; z-index: 40; inset: 0 0 auto; height: var(--bar-height); display: flex; align-items: center; gap: 24px; padding-inline: var(--gutter); background: rgba(25, 23, 19, .93); color: var(--white); border-bottom: 1px solid rgba(255, 253, 248, .14); }
.wordmark { text-decoration: none; font-size: 20px; font-weight: 700; letter-spacing: .12em; white-space: nowrap; }
.wordmark span { margin-left: 12px; font-size: 12px; font-weight: 400; letter-spacing: .04em; color: var(--gold); }
.document-name { font-size: 13px; margin-left: auto; color: #e2d5c6; }
.menu-toggle { display: flex; align-items: center; gap: 20px; min-height: 44px; background: none; color: var(--white); border: 1px solid rgba(255, 253, 248, .3); padding: 8px 14px; font-size: 13px; transition: border-color var(--short), background var(--short); }
.menu-toggle:hover, .menu-toggle[aria-expanded="true"] { background: var(--red-dark); border-color: var(--red-bright); }
.menu-toggle span { font-size: 20px; line-height: 1; }
.chapter-menu { position: fixed; z-index: 35; top: var(--bar-height); left: 0; right: 0; background: var(--ink); color: var(--white); max-height: calc(100dvh - var(--bar-height)); overflow-y: auto; box-shadow: 0 20px 60px #0006; }
.menu-inner { padding-block: 32px 44px; }
.chapter-menu ol { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px 32px; padding: 24px 0 0; margin: 0; list-style: none; }
.chapter-menu a { display: flex; align-items: center; gap: 18px; text-decoration: none; padding: 16px 8px; min-height: 52px; border-bottom: 1px solid #ffffff26; font-size: 16px; }
.chapter-menu a:hover, .chapter-menu a[aria-current="location"] { color: var(--red-bright); }
.chapter-menu a span { color: var(--gold); font-family: var(--number); font-size: 14px; }
.reading-progress { position: fixed; z-index: 45; top: calc(var(--bar-height) - 2px); left: 0; height: 2px; width: 100%; pointer-events: none; }
.reading-progress span { display: block; width: 100%; height: 100%; background: var(--red-bright); transform: scaleX(0); transform-origin: left; }
.chapter { scroll-margin-top: var(--bar-height); }
.scene { position: relative; isolation: isolate; min-height: 690px; height: min(850px, 92svh); color: var(--white); background: var(--ink); }
.scene-image { position: absolute; z-index: -3; inset: 0; display: block; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.scene::before { content: ""; position: absolute; z-index: -2; inset: 0; background: linear-gradient(90deg, rgba(15, 13, 10, .89), rgba(15, 13, 10, .56) 46%, rgba(15, 13, 10, .23) 82%), linear-gradient(0deg, rgba(15, 13, 10, .84), transparent 35%); }
.scene::after { content: ""; position: absolute; z-index: -1; inset: 0; background: linear-gradient(180deg, rgba(15, 13, 10, .28), transparent 50%); pointer-events: none; }
.scene-content { height: 100%; min-height: inherit; display: flex; flex-direction: column; align-items: flex-start; padding-block: clamp(64px, 7vw, 96px) 60px; }
.chapter-label { display: flex; align-items: center; gap: 18px; color: var(--red); font-size: 14px; font-weight: 600; letter-spacing: .07em; margin-bottom: 36px; }
.chapter-label > span { font-family: var(--number); font-size: 18px; font-weight: 400; }
.scene .chapter-label { color: var(--gold); }
.eyebrow { font-size: 13px; letter-spacing: .13em; line-height: 1.7; color: var(--gold); }
.numeric-heading { display: flex; flex-direction: column; gap: 12px; width: 100%; }
.heading-kicker { font-family: var(--sans); font-size: clamp(20px, 2.4vw, 32px); letter-spacing: .015em; line-height: 1.5; }
.metric { display: flex; align-items: baseline; gap: 12px; font-family: var(--number); font-size: clamp(110px, 12vw, 188px); font-weight: 400; letter-spacing: -.075em; line-height: .98; }
.metric-unit { font-family: var(--serif); font-size: .3em; letter-spacing: -.02em; white-space: nowrap; }
.heading-tail { font-size: clamp(32px, 4.5vw, 66px); line-height: 1.32; letter-spacing: -.035em; max-width: 1040px; }
.heading-tail > span { display: inline-block; }
.scene-subtitle { font-family: var(--serif); font-size: clamp(24px, 2.8vw, 40px); line-height: 1.55; margin-top: 30px; text-wrap: balance; }
.scene-subtitle span { display: inline-block; }
.scene-bottom { margin-top: auto; padding-top: 40px; display: flex; align-items: end; justify-content: space-between; gap: 32px; width: 100%; }
.scene-value { font-size: 17px; line-height: 1.8; color: #f0e3d4; }
.scene-value b { font-family: var(--number); font-size: 30px; font-weight: 400; color: var(--gold); white-space: nowrap; }
.image-caption { position: absolute; right: max(var(--gutter), calc((100% - var(--wide)) / 2)); bottom: 18px; font-size: 12px; letter-spacing: .04em; color: #e0d5c7; background: #191713a6; padding: 5px 9px; }
.occasion-list { display: flex; flex-wrap: wrap; gap: 10px; }
.occasion-list span { padding: 11px 17px; border: 1px solid #ffffff50; background: #19171380; font-size: 16px; }
.scene-hero { min-height: 800px; height: 100svh; max-height: 1180px; }
.scene-hero::before { background: linear-gradient(90deg, rgba(15, 13, 10, .86), rgba(15, 13, 10, .35) 48%, rgba(15, 13, 10, .08)), linear-gradient(0deg, rgba(15, 13, 10, .93), transparent 38%); }
.scene-hero .scene-image { object-position: 62% center; }
.hero-layout { height: 100%; min-height: inherit; display: flex; flex-direction: column; justify-content: space-between; padding-block: calc(var(--bar-height) + 68px) 70px; }
.hero-heading { width: 100%; }
.hero-heading .eyebrow { margin-bottom: 28px; }
.hero-target { display: block; font-family: var(--sans); font-size: clamp(22px, 2.7vw, 34px); letter-spacing: .02em; margin-bottom: 18px; }
.hero-number { display: flex; align-items: baseline; gap: 16px; font-family: var(--number); font-size: clamp(150px, 20vw, 292px); letter-spacing: -.075em; line-height: .86; }
.hero-unit { color: var(--red-bright); font-family: var(--serif); font-size: .24em; letter-spacing: -.025em; white-space: nowrap; }
.hero-statement { font-family: var(--serif); font-size: clamp(29px, 3.2vw, 47px); line-height: 1.48; margin-top: 32px; max-width: 820px; text-wrap: balance; }
.hero-statement span { display: inline-block; }
.hero-bottom { display: flex; gap: 64px; align-items: end; justify-content: space-between; margin-top: 80px; }
.hero-promise { max-width: 610px; }
.hero-promise > p { font-size: clamp(17px, 1.6vw, 21px); line-height: 1.8; }
.value-trio { display: flex; gap: 26px; margin-top: 20px; color: var(--gold); font-size: 14px; }
.value-trio span { padding-left: 13px; border-left: 2px solid var(--red-bright); }
.read-button { display: inline-flex; gap: 40px; align-items: center; min-height: 54px; padding: 12px 0; border-bottom: 1px solid var(--gold); font-size: 16px; text-decoration: none; white-space: nowrap; transition: color var(--short); }
.read-button:hover { color: var(--red-bright); }
.read-button span { font-size: 26px; }
.chapter-support { padding: 42px 0 38px; background: var(--paper); border-bottom: 1px solid var(--line); }
.copy { max-width: 950px; font-size: clamp(17px, 1.35vw, 20px); line-height: 1.85; color: var(--muted); text-wrap: pretty; }
.intro-line { display: grid; grid-template-columns: .95fr 1.5fr; gap: 64px; align-items: start; }
.method-name { color: var(--red); font-size: 15px; letter-spacing: .06em; }
.method-slogan { font-family: var(--serif); font-size: clamp(23px, 2.2vw, 32px); line-height: 1.7; margin-top: 9px; }
.disclosures { margin-top: 30px; border-top: 1px solid var(--line); }
.disclosures details { border-bottom: 1px solid var(--line); }
.disclosures summary { display: flex; gap: 24px; align-items: center; justify-content: space-between; min-height: 52px; padding-block: 12px; list-style: none; font-size: 14px; font-weight: 500; color: var(--muted); transition: color var(--short); }
.disclosures summary::-webkit-details-marker { display: none; }
.disclosures summary:hover, .disclosures details[open] summary { color: var(--red); }
.toggle-mark { display: inline-block; font-size: 23px; color: var(--red); transition: transform var(--short); }
.disclosures details[open] .toggle-mark { transform: rotate(45deg); }
.disclosure-body { padding: 16px 0 28px; font-size: 16px; line-height: 1.9; color: var(--muted); max-width: 1100px; overflow-wrap: anywhere; }
.disclosure-body > p + p { margin-top: 14px; }
.disclosure-body a { color: var(--red); }
.delivery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.delivery-grid h3 { color: var(--ink); margin-bottom: 9px; }
.detail-note { margin-top: 24px; }
.positioning-label { display: inline-flex; align-items: center; gap: 22px; margin-top: 30px; padding: 15px 20px; border: 1px solid #ffffff60; background: #1917138c; font-size: 20px; }
.positioning-label i { font-style: normal; color: var(--gold); }
.brand-branch { display: flex; align-items: center; gap: 28px; margin-top: 32px; }
.branch-root { flex: 0 0 260px; padding: 22px 24px; background: var(--ink); color: var(--white); box-shadow: 0 6px 16px #19171318; }
.branch-root strong { display: block; font-size: 19px; }
.node-caption { display: block; font-size: 13px; color: var(--gold); margin-bottom: 8px; }
.branch-link { font-size: 30px; color: var(--red); }
.branch-leaves { display: grid; grid-template-columns: repeat(3, 1fr); flex: 1; border-top: 2px solid var(--red); }
.branch-leaves > div { position: relative; padding: 18px 18px 5px; }
.branch-leaves > div::before { content: ""; width: 2px; height: 12px; background: var(--red); position: absolute; top: 0; left: 18px; }
.branch-leaves strong { display: block; font-size: 18px; font-weight: 500; }
.branch-leaves span { display: block; font-size: 14px; color: var(--muted); margin-top: 8px; }
.scene-product .scene-image { object-position: 65% 50%; }
.scene-product::before { background: linear-gradient(90deg, #0f0d0aeb, #0f0d0a85 48%, #0f0d0a3b), linear-gradient(0deg, #0f0d0aeb, transparent 50%); }
.product-mix { display: grid; grid-template-columns: 3fr 1fr 1fr; width: min(800px, 100%); margin-top: auto; padding-top: 42px; gap: 3px; }
.product-mix > div { border-top: 3px solid #ffffff6b; padding-top: 15px; }
.product-mix .mix-main { border-color: var(--gold); }
.product-mix .mix-new { border-color: var(--red-bright); }
.product-mix strong { font-family: var(--number); font-size: clamp(32px, 3.5vw, 48px); font-weight: 400; letter-spacing: -.04em; }
.product-mix strong > span { font-size: .5em; margin-left: 3px; }
.product-mix > div > span { display: block; font-size: 14px; margin-top: 5px; }
.scene-product .scene-bottom { margin-top: 0; padding-top: 25px; }
.secondary-targets { justify-content: flex-start; gap: 46px; }
.secondary-targets > span { font-size: 14px; color: #eee1d1; }
.secondary-targets strong { display: block; font-family: var(--number); font-size: 30px; font-weight: 400; margin-top: 8px; line-height: 1.3; color: var(--white); }
.secondary-targets small { font-size: 14px; }
.service-chain { display: grid; grid-template-columns: 1fr 28px 1fr 28px 1fr 28px 1.4fr; align-items: center; margin-top: 30px; gap: 16px; }
.service-chain > div { min-width: 0; border-top: 2px solid var(--red); padding-top: 15px; }
.service-chain > div > span { display: block; font-size: 20px; font-weight: 500; }
.service-chain strong { display: block; font-size: 14px; font-weight: 400; color: var(--muted); margin-top: 7px; line-height: 1.7; }
.service-chain i { font-style: normal; color: var(--red); font-size: 25px; }
.return-line { margin-top: 26px; padding: 13px 18px; border-left: 3px solid var(--red); background: #b3322309; font-size: 15px; line-height: 1.75; color: var(--muted); }
.return-line > span { color: var(--red); font-size: 21px; margin-right: 8px; }
.scene-space .scene-image { object-position: 62% center; }
.scene-space::before { background: linear-gradient(90deg, #0f0d0ae6, #0f0d0a70 48%, #0f0d0a24), linear-gradient(0deg, #0f0d0ad9, transparent 45%); }
.experience-rail { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 32px; }
.experience-rail > div { border-top: 1px solid var(--line); padding-top: 16px; }
.rail-index { color: var(--red); font-family: var(--number); font-size: 14px; margin-right: 12px; }
.experience-rail strong { font-family: var(--serif); font-size: 24px; font-weight: 400; }
.experience-rail p { margin-top: 8px; font-size: 14px; color: var(--muted); }
.scene-growth .scene-image { object-position: 60% center; }
.stage-stamp { font-size: 15px; color: var(--gold); border: 1px solid #f1cfab50; padding: 14px 20px; background: #19171385; }
.channel-path { display: flex; gap: 28px; align-items: center; margin-top: 30px; }
.channel-origins { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; flex: 1; }
.channel-origins > div { display: grid; grid-template-columns: 42px 1fr; gap: 3px 12px; padding: 20px 12px 20px 0; border-top: 2px solid var(--red); }
.channel-symbol { grid-row: span 2; width: 40px; height: 40px; display: grid; place-items: center; font-family: var(--serif); font-size: 20px; color: var(--white); background: var(--red); border-radius: 50%; }
.channel-origins strong { font-size: 18px; font-weight: 500; }
.channel-origins div > span:last-child { font-size: 14px; color: var(--muted); line-height: 1.7; }
.channel-arrow { font-size: 30px; color: var(--red); }
.channel-destination { flex: 0 0 265px; padding: 22px 24px; background: var(--ink); color: var(--white); }
.channel-destination strong { display: block; font-size: 20px; font-weight: 500; }
.channel-destination span { display: block; font-size: 14px; line-height: 1.7; margin-top: 9px; color: var(--gold); }
.support-target { margin-top: 12px; font-size: 14px; color: var(--muted); }
.support-target b { color: var(--red); margin-left: 12px; font-size: 18px; font-weight: 500; }
.scene-return { min-height: 740px; }
.scene-return::before { background: linear-gradient(180deg, #0f0d0adb, #0f0d0a33 62%, #0f0d0ae8), linear-gradient(90deg, #0f0d0a2e, #0f0d0a13); }
.season-duet { display: grid; grid-template-columns: 1fr 1fr; width: 100%; gap: 80px; margin-top: auto; padding-top: 48px; }
.season-duet > div { border-top: 1px solid #ffffff55; padding-top: 18px; text-shadow: 0 2px 10px #000b; }
.season-duet span { color: var(--gold); font-size: 15px; display: block; margin-bottom: 7px; }
.season-duet strong { font-family: var(--serif); font-size: clamp(21px, 2.3vw, 30px); font-weight: 400; text-wrap: balance; }
.scene-return .scene-bottom { margin-top: 0; padding-top: 30px; }
.paper-stage { padding-block: 70px; }
.chapter-profit { background: var(--paper); }
.profit-heading { display: flex; align-items: center; gap: 64px; margin-bottom: 36px; }
.profit-heading .numeric-heading { flex: 1; }
.chapter-profit .metric { color: var(--red); }
.profit-statement { font-family: var(--serif); font-size: clamp(30px, 3.4vw, 49px); line-height: 1.55; flex: 1; text-wrap: balance; }
.profit-statement span { display: block; }
.diagnosis { margin-top: 42px; }
.diagnosis-top { display: flex; justify-content: space-between; gap: 20px; align-items: baseline; padding-bottom: 20px; }
.diagnosis-top > span { color: var(--muted); font-size: 13px; }
.issue-buttons { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.issue-buttons button { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 16px 20px; min-height: 58px; border: 1px solid #19171345; background: #fffdf8b3; color: var(--ink); border-radius: 5px; box-shadow: 0 3px 10px #19171308; font-size: 16px; text-align: left; transition: background var(--short), color var(--short), border-color var(--short), box-shadow var(--medium); }
.issue-buttons button:hover { border-color: var(--red); box-shadow: 0 4px 16px #b332231a; }
.issue-buttons button[aria-pressed="true"] { background: var(--red); color: var(--white); border-color: var(--red); box-shadow: 0 7px 20px #b332232f, inset 0 0 0 1px #ffb3a04d; }
.issue-buttons button > span { font-size: 24px; }
.diagnosis-graph { padding-top: 30px; }
.analysis-hub { position: relative; margin-inline: auto; width: min(540px, 100%); padding: 22px; border: 1px solid #564940; text-align: center; background: var(--ink); color: var(--white); border-radius: 6px; box-shadow: 0 8px 24px #1917131a; }
.analysis-hub > span { color: var(--gold); font-size: 13px; }
.analysis-hub strong { display: block; font-size: 24px; font-weight: 500; margin-top: 8px; }
.analysis-hub small { display: block; font-size: 14px; line-height: 1.7; margin-top: 8px; color: #dfd5c8; }
.connection-fan { position: relative; height: 48px; display: grid; grid-template-columns: repeat(5, 1fr); margin-inline: 10%; border-bottom: 1px solid #19171340; }
.connection-fan::before { content: ""; width: 1px; height: 100%; background: var(--red); position: absolute; left: 50%; top: 0; }
.connection-fan span { position: absolute; bottom: -11px; height: 11px; width: 1px; background: #19171340; }
.connection-fan span:nth-child(1) { left: 0; }
.connection-fan span:nth-child(2) { left: 25%; }
.connection-fan span:nth-child(3) { left: 50%; }
.connection-fan span:nth-child(4) { left: 75%; }
.connection-fan span:nth-child(5) { right: 0; }
.connection-fan span.is-active { background: var(--red); width: 2px; }
.connected-modules { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin-top: 10px; }
.module { position: relative; min-width: 0; padding: 18px 12px; background: #dfdad3; border: 1px solid #cac4bc; border-radius: 5px; color: var(--muted); text-align: center; transition: color var(--short), border-color var(--short), background var(--short), box-shadow var(--medium); }
.module strong { display: block; font-size: 18px; font-weight: 500; }
.module small { font-size: 13px; display: block; margin-top: 8px; line-height: 1.7; }
.module small.module-tool { margin-top: 14px; padding-top: 10px; border-top: 1px solid #19171326; }
.module-state { display: block; font-size: 12px; margin-bottom: 8px; color: var(--muted); }
.module.is-active { color: var(--red-dark); background: #fff4ee; border-color: var(--red); box-shadow: 0 5px 16px #b3322319, inset 0 0 0 1px #b3322317; }
.module.is-active .module-state { color: var(--red); font-weight: 600; }
.module.is-active small.module-tool { border-color: #b3322333; }
.module.is-active::before { content: ""; position: absolute; width: 7px; height: 7px; border-radius: 50%; background: var(--red); top: -4px; left: calc(50% - 3px); }
.action-result { display: flex; gap: 24px; align-items: baseline; padding: 24px; margin-top: 24px; background: var(--ink); color: var(--white); border-left: 4px solid var(--red); border-radius: 3px; }
.result-label { flex: 0 0 auto; font-size: 14px; color: var(--gold); }
.action-result p { font-size: 17px; line-height: 1.8; }
.chapter-replication { background: var(--ink); color: var(--white); }
.chapter-replication .chapter-label { color: var(--gold); }
.chapter-replication .numeric-heading { gap: 14px; }
.chapter-replication .metric { color: var(--gold); }
.chapter-replication .heading-tail { max-width: 1120px; }
.chapter-replication .copy { color: #ded2c2; margin-top: 32px; }
.asset-architecture { margin-top: 44px; }
.asset-source { display: flex; align-items: baseline; gap: 24px; margin-bottom: 28px; }
.asset-source > span { font-size: 14px; color: var(--gold); }
.asset-source > strong { font-family: var(--serif); font-size: 27px; font-weight: 400; }
.asset-grid { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.asset-grid > div { padding: 26px 22px; background: #ffffff06; border: 1px solid #ffffff33; box-shadow: 0 8px 20px #0002; }
.asset-index { display: block; font-family: var(--number); font-size: 14px; color: var(--red-bright); margin-bottom: 14px; }
.asset-grid strong { font-family: var(--serif); font-weight: 400; font-size: 33px; }
.asset-grid p { font-size: 14px; line-height: 1.8; color: #ded2c2; margin-top: 12px; }
.asset-destination { text-align: center; margin-top: 26px; }
.asset-destination > span { display: block; color: var(--red-bright); font-size: 28px; }
.asset-destination p { font-family: var(--serif); font-size: clamp(24px, 2.6vw, 35px); margin-top: 10px; }
.asset-destination small { display: block; font-size: 14px; margin-top: 12px; color: #c9beae; }
.chapter-replication .disclosures, .chapter-replication details { border-color: #ffffff33; }
.chapter-replication .disclosures summary, .chapter-replication .disclosure-body { color: #ded2c2; }
.chapter-replication .disclosures summary:hover, .chapter-replication details[open] summary, .chapter-replication .toggle-mark, .chapter-replication .disclosure-body a { color: var(--red-bright); }
.chapter-replication .delivery-grid h3 { color: var(--white); }
.chapter-partnership { background: var(--paper-deep); }
.closing-heading { font-size: clamp(32px, 4.7vw, 68px); line-height: 1.4; letter-spacing: -.03em; }
.closing-heading > span { display: block; }
.closing-heading > span:last-child { color: var(--red); }
.chapter-partnership .copy { margin-top: 28px; }
.partnership-timeline { margin-top: 46px; }
.timeline-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; position: relative; }
.timeline-grid::before { content: ""; height: 1px; background: var(--red); position: absolute; top: 6px; left: 6px; right: 6px; }
.timeline-grid > div { position: relative; min-width: 0; }
.timeline-dot { display: block; height: 13px; width: 13px; border: 2px solid var(--red); border-radius: 50%; background: var(--paper-deep); margin-bottom: 22px; }
.timeline-grid > div:first-child .timeline-dot { background: var(--red); }
.timeline-grid strong { font-family: var(--serif); font-size: 28px; font-weight: 400; }
.timeline-grid p { margin-top: 12px; color: var(--muted); line-height: 1.8; font-size: 15px; }
.accompaniment-band { display: flex; justify-content: center; align-items: center; gap: 16px; margin-top: 30px; padding: 19px; border: 1px solid var(--red); background: #b3322308; color: var(--red-dark); }
.accompaniment-band > span { font-size: 26px; }
.accompaniment-band strong { font-size: 18px; font-weight: 500; }
.final-chain { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 40px; }
.final-chain > span { font-size: 18px; }
.final-chain i { font-size: 23px; font-style: normal; color: var(--red); }
.final-feedback { margin-top: 20px; text-align: center; color: var(--muted); font-size: 15px; border-bottom: 1px solid var(--red); padding-bottom: 18px; }
.scope-list { display: grid; grid-template-columns: .9fr .9fr 1.2fr; gap: 30px; }
.scope-list h3 { color: var(--ink); margin-bottom: 10px; }
.foundation-mini { padding-top: 28px; margin-top: 28px; border-top: 1px solid var(--line); }
.foundation-mini > h3 { color: var(--red); margin-bottom: 20px; }
.foundation-mini > div { display: grid; grid-template-columns: 1fr 24px 1fr 24px 1fr; align-items: center; gap: 16px; }
.foundation-mini strong, .foundation-mini span { display: block; }
.foundation-mini strong { color: var(--ink); }
.foundation-mini span { margin-top: 6px; font-size: 15px; }
.foundation-mini i { color: var(--red); font-style: normal; font-size: 22px; }
.closing-signature { margin-top: 68px; padding-top: 40px; border-top: 1px solid var(--line); }
.closing-line { font-family: var(--serif); font-size: clamp(30px, 3.8vw, 55px); line-height: 1.5; margin-top: 22px; letter-spacing: -.025em; text-wrap: balance; }
.closing-line > span { display: block; }
.closing-signature .method-slogan { color: var(--muted); font-size: 21px; margin-top: 24px; }
.document-footer { background: var(--ink); color: #c7bcac; }
.document-footer .frame { display: flex; gap: 20px; align-items: center; justify-content: space-between; padding-block: 26px; font-size: 13px; }
.document-footer a { min-height: 44px; display: inline-flex; align-items: center; }
.noscript-note { background: var(--paper); padding: 16px 24px; font-size: 14px; }

@media (min-width: 1600px) {
  .scene { height: 860px; }
  .scene-hero { height: 100svh; }
}
@media (max-width: 1100px) {
  :root { --gutter: 40px; }
  .metric { font-size: 136px; }
  .metric-unit { font-size: .28em; }
  .hero-number { font-size: 224px; }
  .hero-bottom { gap: 32px; }
  .hero-promise { max-width: 510px; }
  .read-button { gap: 18px; }
  .brand-branch { gap: 16px; }
  .branch-root { flex-basis: 220px; padding: 20px 16px; }
  .branch-leaves > div { padding-inline: 12px; }
  .branch-leaves span { font-size: 13px; }
  .channel-path { gap: 16px; }
  .channel-destination { flex-basis: 220px; padding: 20px 18px; }
  .channel-origins > div { grid-template-columns: 1fr; padding-right: 4px; }
  .channel-symbol { grid-row: auto; margin-bottom: 8px; }
  .final-chain { gap: 10px; }
  .final-chain > span { font-size: 16px; }
  .connected-modules { gap: 8px; }
  .module strong { font-size: 16px; }
  .module small { font-size: 12px; }
}
@media (max-width: 780px) {
  :root { --gutter: 24px; --bar-height: 60px; }
  .document-name { display: none; }
  .document-bar { justify-content: space-between; gap: 12px; }
  .wordmark { font-size: 19px; }
  .menu-toggle { font-size: 12px; gap: 10px; }
  .chapter-menu ol { grid-template-columns: 1fr 1fr; gap: 0 20px; }
  .chapter-menu a { font-size: 14px; gap: 12px; }
  .scene { height: auto; min-height: 690px; }
  .scene-content { padding-block: 48px 60px; }
  .chapter-label { font-size: 13px; margin-bottom: 26px; gap: 14px; }
  .metric { font-size: clamp(96px, 17vw, 130px); gap: 8px; }
  .metric-unit { font-size: .27em; }
  .heading-kicker { font-size: 20px; }
  .heading-tail { font-size: clamp(29px, 5.4vw, 42px); }
  .scene-subtitle { font-size: 27px; margin-top: 24px; }
  .scene-bottom { gap: 20px; padding-top: 32px; flex-wrap: wrap; }
  .scene-value { font-size: 15px; }
  .image-caption { font-size: 11px; bottom: 13px; }
  .scene-hero { min-height: 790px; height: 100svh; max-height: none; }
  .hero-layout { padding-block: 120px 55px; }
  .hero-number { font-size: clamp(140px, 25vw, 200px); gap: 12px; }
  .hero-target { font-size: 24px; margin-bottom: 14px; }
  .hero-statement { font-size: 30px; max-width: 520px; margin-top: 25px; }
  .hero-bottom { flex-direction: column; align-items: flex-start; gap: 20px; margin-top: 80px; }
  .hero-promise { max-width: 500px; }
  .hero-promise > p { font-size: 17px; }
  .value-trio { margin-top: 16px; gap: 20px; }
  .read-button { font-size: 15px; min-height: 44px; padding-block: 8px; }
  .scene-hero::before { background: linear-gradient(180deg, #0f0d0acc, #0f0d0a66 45%, #0f0d0a8f 62%, #0f0d0af2), linear-gradient(90deg, #0f0d0a40, transparent); }
  .scene-brand::before { background: linear-gradient(180deg, #0f0d0ae6, #0f0d0a70 48%, #0f0d0ad9); }
  .scene-brand .scene-image { object-position: 45% center; }
  .positioning-label { font-size: 17px; gap: 13px; padding: 13px 15px; }
  .occasion-list span { padding: 9px 12px; font-size: 14px; }
  .chapter-support { padding-block: 30px; }
  .copy { font-size: 17px; line-height: 1.9; }
  .intro-line { grid-template-columns: 1fr; gap: 24px; }
  .disclosures { margin-top: 24px; }
  .disclosure-body { font-size: 16px; }
  .delivery-grid, .scope-list { grid-template-columns: 1fr; gap: 24px; }
  .brand-branch { flex-direction: column; align-items: stretch; gap: 14px; }
  .branch-root { flex-basis: auto; width: 100%; padding: 16px 20px; }
  .branch-link { text-align: center; transform: rotate(90deg); line-height: 1; }
  .branch-leaves { gap: 10px; }
  .branch-leaves > div { padding: 18px 0 0; }
  .branch-leaves > div::before { left: 12px; }
  .branch-leaves strong { font-size: 16px; }
  .branch-leaves span { font-size: 13px; line-height: 1.6; }
  .product-mix { grid-template-columns: 3fr 1.2fr 1.2fr; gap: 10px; padding-top: 36px; }
  .product-mix > div > span { font-size: 13px; line-height: 1.65; }
  .secondary-targets { gap: 24px; }
  .secondary-targets strong { font-size: 26px; }
  .service-chain { grid-template-columns: 1fr 24px 1fr; gap: 20px 12px; }
  .service-chain > div > span { font-size: 18px; }
  .service-chain > i:nth-of-type(2) { display: none; }
  .service-chain > div:nth-of-type(3) { grid-column: 1; }
  .experience-rail { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .channel-path { flex-direction: column; gap: 15px; align-items: stretch; }
  .channel-origins { width: 100%; gap: 14px; }
  .channel-origins strong { font-size: 17px; }
  .channel-origins div > span:last-child { font-size: 13px; }
  .channel-arrow { align-self: center; transform: rotate(90deg); line-height: 1; }
  .channel-destination { flex-basis: auto; padding: 18px 20px; }
  .channel-destination span br { display: none; }
  .stage-stamp { font-size: 14px; }
  .scene-return { min-height: 720px; }
  .scene-return .scene-image { object-position: center; }
  .season-duet { gap: 32px; }
  .season-duet strong { font-size: 22px; }
  .scene-return .secondary-targets > span { font-size: 13px; }
  .paper-stage { padding-block: 48px; }
  .profit-heading { flex-direction: column; align-items: flex-start; gap: 22px; margin-bottom: 24px; }
  .profit-statement { font-size: 29px; }
  .profit-statement span { display: inline-block; }
  .diagnosis-top { flex-direction: column; gap: 10px; }
  .diagnosis-top h3 { font-size: 20px; line-height: 1.6; }
  .issue-buttons { grid-template-columns: 1fr; gap: 10px; }
  .issue-buttons button { min-height: 54px; padding: 12px 16px; }
  .connected-modules { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .connection-fan { height: 28px; border: none; }
  .connection-fan span { display: none; }
  .module { padding: 16px 10px; }
  .module strong { font-size: 16px; }
  .module small { font-size: 12px; }
  .action-result { flex-direction: column; gap: 8px; padding: 18px; }
  .action-result p { font-size: 16px; }
  .asset-source { flex-direction: column; gap: 12px; }
  .asset-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .asset-grid > div { padding: 20px; }
  .asset-grid strong { font-size: 29px; }
  .timeline-grid { grid-template-columns: 1fr 1fr; gap: 30px 26px; }
  .timeline-grid::before { display: none; }
  .timeline-grid > div { border-top: 1px solid var(--red); padding-top: 0; }
  .timeline-dot { margin-top: -7px; }
  .timeline-grid strong { font-size: 26px; }
  .accompaniment-band { gap: 12px; padding: 16px; }
  .accompaniment-band strong { font-size: 16px; line-height: 1.7; }
  .final-chain { flex-wrap: wrap; justify-content: flex-start; gap: 12px 15px; }
  .final-chain > span { font-size: 16px; }
  .foundation-mini > div { grid-template-columns: 1fr; gap: 15px; }
  .foundation-mini i { transform: rotate(90deg); width: 22px; justify-self: center; }
  .closing-signature { margin-top: 44px; }
  .closing-line { font-size: 32px; }
  .closing-line > span { display: inline-block; }
  .document-footer .frame { align-items: flex-start; flex-direction: column; gap: 5px; font-size: 12px; }
}
@media (max-width: 480px) {
  :root { --gutter: 22px; }
  .hero-number { font-size: clamp(116px, 29vw, 150px); }
  .hero-unit { font-size: .24em; }
  .hero-heading .eyebrow { font-size: 12px; letter-spacing: .05em; }
  .hero-statement { font-size: 29px; }
  .hero-statement span { display: block; }
  .hero-promise > p { font-size: 16px; }
  .value-trio { font-size: 13px; gap: 18px; }
  .wordmark span { margin-left: 8px; }
  .scene-content { padding-block: 42px 60px; }
  .metric { font-size: 100px; }
  .scene-brand .metric { font-size: clamp(73px, 20vw, 96px); }
  .scene-brand .metric-unit { font-size: .28em; }
  .heading-kicker { font-size: 18px; }
  .heading-tail { font-size: 30px; }
  .scene-product .heading-tail { max-width: 100%; }
  .scene-product .heading-tail span { display: block; }
  .scene-growth .metric-unit { font-size: .27em; }
  .scene-growth .scene-subtitle span { display: block; }
  .scene-subtitle { font-size: 25px; }
  .scene-growth .scene-subtitle span:last-child { font-size: 21px; }
  .scene-value { font-size: 14px; }
  .scene-bottom { gap: 16px; }
  .scene-return .scene-bottom { gap: 26px; }
  .season-duet { gap: 24px; }
  .season-duet strong { font-size: 20px; line-height: 1.55; }
  .product-mix { grid-template-columns: 2.4fr 1.3fr 1.3fr; }
  .secondary-targets strong { font-size: 24px; }
  .branch-leaves strong { font-size: 15px; }
  .channel-origins { gap: 10px; }
  .chapter-replication .heading-tail span { display: block; }
  .closing-heading { font-size: 30px; }
  .closing-heading span:first-child { font-size: 24px; white-space: nowrap; }
  .closing-line { font-size: 28px; }
  .closing-line span:last-child { font-size: 23px; white-space: nowrap; }
  .chapter-menu ol { grid-template-columns: 1fr; gap: 0; }
  .chapter-menu a { padding-block: 10px; min-height: 45px; }
  .menu-inner { padding-block: 22px; }
}
@media (max-width: 360px) {
  :root { --gutter: 18px; }
  .hero-number { font-size: 112px; gap: 8px; }
  .scene-brand .metric { font-size: 70px; }
  .closing-heading span:first-child { white-space: normal; font-size: 23px; }
  .closing-line span:last-child { white-space: normal; font-size: 25px; }
  .connected-modules { grid-template-columns: 1fr 1fr; }
  .value-trio { gap: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}
@media print {
  .document-bar, .chapter-menu, .reading-progress, .read-button, .skip-link, .document-footer { display: none !important; }
  body { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  .scene, .scene-hero { min-height: 560px; height: auto; }
  .scene-content, .hero-layout { min-height: 560px; padding-block: 45px; }
  .hero-number { font-size: 175px; }
  .metric { font-size: 110px; }
  .chapter { break-before: page; }
  .chapter:first-child { break-before: auto; }
  .disclosures { display: none; }
  .issue-buttons { display: none; }
  .paper-stage { padding-block: 40px; }
}