:root {
  --ink: #101118;
  --ink-soft: #171821;
  --paper: #f5f5f8;
  --white: #fff;
  --muted: #686a75;
  --line: #d9dae1;
  --dark-line: rgba(255,255,255,.14);
  --purple: #6754f7;
  --purple-light: #aaa0ff;
  --purple-pale: #e5e1ff;
  --shell: 1240px;
  --ease: cubic-bezier(.2,.75,.2,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif; -webkit-font-smoothing: antialiased; }
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
img { max-width: 100%; height: auto; }
[id] { scroll-margin-top: 90px; }
.shell { width: min(calc(100% - 48px), var(--shell)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 999; top: 8px; left: 8px; padding: 10px 14px; color: #fff; background: var(--purple); transform: translateY(-140%); }
.skip-link:focus { transform: none; }
.reading-progress { position: fixed; z-index: 200; inset: 0 auto auto 0; width: 0; height: 3px; background: var(--purple); }

/* Header */
.site-header { position: fixed; z-index: 90; inset: 0 0 auto; color: #fff; background: rgba(16,17,24,.12); border-bottom: 1px solid rgba(255,255,255,.13); transition: background .25s, box-shadow .25s; }
.site-header.scrolled { color: var(--ink); background: rgba(255,255,255,.94); box-shadow: 0 12px 40px rgba(10,10,25,.08); backdrop-filter: blur(14px); }
.header-inner { height: 80px; display: flex; align-items: center; gap: 55px; }
.brand { width: 112px; display: inline-flex; }
.site-header:not(.scrolled) .brand img { filter: brightness(0) invert(1); }
.desktop-nav { display: flex; align-items: center; gap: 30px; margin-left: auto; }
.desktop-nav a, .header-link { position: relative; font-size: 11px; }
.desktop-nav a::after { content: ""; position: absolute; inset: auto 0 -9px; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: right; transition: transform .25s; }
.desktop-nav a:hover::after, .desktop-nav a.active::after { transform: scaleX(1); transform-origin: left; }
.header-actions { display: flex; align-items: center; gap: 22px; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 25px; padding: 0 23px; border: 0; font-size: 11px; font-weight: 700; cursor: pointer; transition: transform .2s, background .2s; }
.button:hover { transform: translateY(-2px); }
.button-small { min-height: 38px; color: var(--ink); background: #fff; }
.site-header.scrolled .button-small { color: #fff; background: var(--purple); }
.menu-toggle { width: 37px; height: 37px; display: none; position: relative; border: 0; color: inherit; background: transparent; cursor: pointer; }
.menu-toggle span { position: absolute; left: 8px; width: 22px; height: 1px; background: currentColor; transition: transform .2s, top .2s; }
.menu-toggle span:first-child { top: 14px; }
.menu-toggle span:last-child { top: 22px; }
.menu-toggle[aria-expanded="true"] span:first-child { top: 18px; transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { top: 18px; transform: rotate(-45deg); }
.mobile-menu { position: fixed; z-index: 89; inset: 68px 0 0; padding: 30px 24px; color: var(--ink); background: rgba(255,255,255,.98); overflow: auto; }
.mobile-menu a { display: block; padding: 17px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
.mobile-print { width: 100%; margin-top: 25px; padding: 16px; border: 0; color: #fff; background: var(--purple); }

/* Hero */
.hero { min-height: 100vh; position: relative; overflow: hidden; padding: 135px 0 0; color: #fff; background: var(--ink); }
.hero::before { content: ""; position: absolute; top: -27%; right: -10%; width: 58vw; height: 58vw; border-radius: 50%; background: radial-gradient(circle, rgba(103,84,247,.39), transparent 67%); }
.hero-grid, .final-grid { position: absolute; inset: 0; opacity: .28; background-image: linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px); background-size: 74px 74px; mask-image: linear-gradient(to bottom, #000, transparent 85%); }
.hero-layout { position: relative; z-index: 1; display: grid; grid-template-columns: 1.02fr .98fr; gap: 76px; align-items: center; }
.breadcrumb { display: flex; gap: 10px; margin-bottom: 46px; color: rgba(255,255,255,.45); font-size: 9px; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb b { color: rgba(255,255,255,.72); font-weight: 400; }
.eyebrow, .section-kicker { margin: 0; color: var(--purple-light); font: 8px Arial, sans-serif; letter-spacing: .17em; }
.eyebrow { display: flex; align-items: center; gap: 12px; }
.eyebrow i { width: 25px; height: 1px; background: var(--purple-light); }
.hero h1 { margin: 24px 0 0; font-size: clamp(48px, 5.4vw, 75px); line-height: 1.13; letter-spacing: -.055em; }
.hero h1 em { color: var(--purple-light); font-style: normal; }
.hero-slogan { margin: 27px 0 0; font-size: 23px; font-weight: 700; }
.hero-lead { max-width: 650px; margin: 18px 0 0; color: rgba(255,255,255,.58); font-size: 14px; line-height: 1.9; }
.hero-actions { display: flex; align-items: center; gap: 31px; margin-top: 34px; }
.button-primary { color: #fff; background: var(--purple); }
.text-button { padding: 0 0 6px; border: 0; border-bottom: 1px solid rgba(255,255,255,.35); color: #fff; background: transparent; font-size: 11px; cursor: pointer; }
.text-button span { margin-left: 15px; color: var(--purple-light); }
.hero-meta { display: flex; margin: 40px 0 0; }
.hero-meta div { min-width: 115px; padding-left: 17px; border-left: 1px solid rgba(255,255,255,.18); }
.hero-meta dt { color: rgba(255,255,255,.34); font: 7px Arial, sans-serif; letter-spacing: .15em; }
.hero-meta dd { margin: 9px 0 0; color: rgba(255,255,255,.78); font-size: 10px; }
.hero-cover { margin: 0; border: 1px solid rgba(255,255,255,.18); background: rgba(255,255,255,.035); box-shadow: 27px 27px 0 rgba(103,84,247,.14); }
.hero-cover img { display: block; width: 100%; }
.hero-cover figcaption { min-height: 70px; display: grid; grid-template-columns: .7fr 1.3fr; gap: 20px; align-items: center; padding: 17px 23px; border-top: 1px solid rgba(255,255,255,.15); }
.hero-cover figcaption span { color: var(--purple-light); font: 8px Arial, sans-serif; letter-spacing: .12em; }
.hero-cover figcaption b { font-size: 11px; text-align: right; }
.hero-strip { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(5, 1fr); margin-top: 62px; border-top: 1px solid rgba(255,255,255,.12); }
.hero-strip span { min-height: 76px; display: flex; align-items: center; gap: 14px; padding: 16px 20px; border-left: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.67); font-size: 11px; }
.hero-strip span:last-child { border-right: 1px solid rgba(255,255,255,.12); }
.hero-strip small { color: var(--purple-light); font: 8px Arial, sans-serif; }

/* Report foundations */
.section { padding: 125px 0; }
.report-grid { display: grid; grid-template-columns: 155px 1fr; gap: 75px; }
.report-content { min-width: 0; }
.chapter-mark { position: sticky; top: 115px; align-self: start; }
.chapter-mark span { display: block; margin-bottom: 85px; color: var(--purple); font: 8px Arial, sans-serif; }
.chapter-mark b { display: block; font-size: 12px; }
.chapter-mark small { display: block; margin-top: 8px; color: #9a9ba4; font: 7px Arial, sans-serif; letter-spacing: .12em; }
.chapter-mark.light b { color: #fff; }
.chapter-mark.light small { color: rgba(255,255,255,.35); }
.section-heading, .summary-lead { display: grid; grid-template-columns: 1fr 330px; gap: 75px; margin-bottom: 67px; }
.section-heading .section-kicker, .summary-lead .section-kicker { grid-column: 1 / -1; margin-bottom: -42px; }
.section-heading h2, .summary-lead h2 { margin: 0; font-size: clamp(37px, 4vw, 53px); line-height: 1.3; letter-spacing: -.05em; }
.section-heading > p:last-child, .summary-lead > p:last-child { margin: 3px 0 0; color: var(--muted); font-size: 13px; line-height: 1.9; }
.section-heading.light h2 { color: #fff; }
.section-heading.light > p:last-child { color: rgba(255,255,255,.52); }

/* Summary */
.summary { background: #fff; }
.shift-list { border-top: 2px solid var(--ink); }
.shift-list article { min-height: 175px; display: grid; grid-template-columns: 76px 1fr; padding: 29px 0; border-bottom: 1px solid var(--line); }
.shift-list article > span { color: var(--purple); font: 9px Arial, sans-serif; }
.shift-list small { color: #9b9ca6; font: 8px Arial, sans-serif; letter-spacing: .12em; }
.shift-list h3 { margin: 12px 0 11px; font-size: 24px; }
.shift-list p { max-width: 670px; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }
.evidence-note { margin-top: 45px; padding: 29px 31px; border-left: 3px solid var(--purple); background: var(--paper); }
.evidence-note b { font-size: 13px; }
.evidence-note p { margin: 12px 0; color: var(--muted); font-size: 12px; line-height: 1.8; }
.evidence-note a { color: var(--purple); font-size: 10px; font-weight: 700; }

/* Framework */
.framework { color: #fff; background: var(--ink-soft); }
.brand-stack { border-top: 1px solid var(--dark-line); }
.brand-stack article { min-height: 115px; display: grid; grid-template-columns: 55px 1fr 230px; gap: 22px; align-items: center; padding: 23px 25px; border-bottom: 1px solid var(--dark-line); transition: background .25s, padding .25s; }
.brand-stack article:hover { padding-left: 34px; background: rgba(103,84,247,.13); }
.brand-stack article > span { color: var(--purple-light); font: 9px Arial, sans-serif; }
.brand-stack small { color: rgba(255,255,255,.32); font: 7px Arial, sans-serif; letter-spacing: .14em; }
.brand-stack h3 { margin: 8px 0 0; font-size: 22px; }
.brand-stack p { margin: 7px 0 0; color: rgba(255,255,255,.47); font-size: 11px; }
.brand-stack article > b { color: rgba(255,255,255,.68); font-size: 11px; font-weight: 400; text-align: right; }
.response-stack { border-top: 1px solid var(--dark-line); }
.response-stack article { min-height: 115px; display: grid; grid-template-columns: 55px 1fr 230px; gap: 22px; align-items: center; padding: 23px 25px; border-bottom: 1px solid var(--dark-line); transition: background .25s, padding .25s; }
.response-stack article:hover { padding-left: 34px; background: rgba(103,84,247,.13); }
.response-stack article > span { color: var(--purple-light); font: 9px Arial, sans-serif; }
.response-stack small { color: rgba(255,255,255,.32); font: 7px Arial, sans-serif; letter-spacing: .14em; }
.response-stack h3 { margin: 8px 0 0; font-size: 22px; }
.response-stack p { margin: 7px 0 0; color: rgba(255,255,255,.47); font-size: 11px; }
.response-stack article > b { color: rgba(255,255,255,.68); font-size: 11px; font-weight: 400; text-align: right; }
.website-stack { border-top: 1px solid var(--dark-line); }
.website-stack article { min-height: 115px; display: grid; grid-template-columns: 55px 1fr 230px; gap: 22px; align-items: center; padding: 23px 25px; border-bottom: 1px solid var(--dark-line); transition: background .25s, padding .25s; }
.website-stack article:hover { padding-left: 34px; background: rgba(103,84,247,.13); }
.website-stack article > span { color: var(--purple-light); font: 9px Arial, sans-serif; }
.website-stack small { color: rgba(255,255,255,.32); font: 7px Arial, sans-serif; letter-spacing: .14em; }
.website-stack h3 { margin: 8px 0 0; font-size: 22px; }
.website-stack p { margin: 7px 0 0; color: rgba(255,255,255,.47); font-size: 11px; }
.website-stack article > b { color: rgba(255,255,255,.68); font-size: 11px; font-weight: 400; text-align: right; }
.risk-levels { margin-top: 52px; padding: 27px; border: 1px solid var(--dark-line); }
.risk-levels > small { color: var(--purple-light); font: 7px Arial, sans-serif; letter-spacing: .15em; }
.risk-levels > div { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 22px; border-top: 1px solid var(--dark-line); border-left: 1px solid var(--dark-line); }
.risk-levels span { min-height: 70px; display: flex; align-items: center; gap: 12px; padding: 15px; border-right: 1px solid var(--dark-line); border-bottom: 1px solid var(--dark-line); color: rgba(255,255,255,.68); font-size: 11px; }
.risk-levels b { color: var(--purple-light); font: 10px Arial, sans-serif; }
.account-map { display: grid; grid-template-columns: repeat(6, 1fr); border-top: 1px solid var(--dark-line); border-left: 1px solid var(--dark-line); }
.account-map article { grid-column: span 2; min-height: 285px; padding: 27px 25px; border-right: 1px solid var(--dark-line); border-bottom: 1px solid var(--dark-line); background: rgba(255,255,255,.015); transition: background .25s, transform .25s; }
.account-map article:nth-child(4) { grid-column: 2 / span 2; }
.account-map article:hover { z-index: 1; background: rgba(103,84,247,.13); transform: translateY(-3px); }
.account-map article > span { color: var(--purple-light); font: 9px Arial, sans-serif; }
.account-map small { float: right; color: rgba(255,255,255,.3); font: 7px Arial, sans-serif; letter-spacing: .14em; }
.account-map h3 { margin: 78px 0 15px; font-size: 22px; }
.account-map p { margin: 0; color: rgba(255,255,255,.52); font-size: 12px; line-height: 1.8; }
.account-map b { display: block; margin-top: 25px; color: var(--purple-light); font-size: 10px; }
.account-map .account-main { background: var(--purple); }
.account-map .account-main small, .account-map .account-main p, .account-map .account-main b { color: rgba(255,255,255,.75); }
.conversion-stack { border-top: 1px solid var(--dark-line); }
.conversion-stack article { display: grid; grid-template-columns: 55px 1fr 230px; gap: 22px; align-items: center; min-height: 115px; padding: 23px 25px; border-bottom: 1px solid var(--dark-line); transition: background .25s, padding .25s; }
.conversion-stack article:hover { padding-left: 34px; background: rgba(103,84,247,.13); }
.conversion-stack article > span { color: var(--purple-light); font: 9px Arial, sans-serif; }
.conversion-stack small { color: rgba(255,255,255,.32); font: 7px Arial, sans-serif; letter-spacing: .14em; }
.conversion-stack h3 { margin: 8px 0 0; font-size: 22px; }
.conversion-stack p { margin: 7px 0 0; color: rgba(255,255,255,.47); font-size: 11px; }
.conversion-stack article > b { color: rgba(255,255,255,.68); font-size: 11px; font-weight: 400; text-align: right; }
.journey { margin-top: 55px; padding: 27px; border: 1px solid var(--dark-line); }
.journey > small { color: var(--purple-light); font: 7px Arial, sans-serif; letter-spacing: .15em; }
.journey > div { display: grid; grid-template-columns: auto 1fr auto 1fr auto 1fr auto 1fr auto; gap: 13px; align-items: center; margin-top: 24px; }
.journey span { font-size: 12px; font-weight: 700; }
.journey i { position: relative; height: 1px; background: rgba(255,255,255,.25); }
.journey i::after { content: ""; position: absolute; top: -3px; right: 0; width: 6px; height: 6px; border-top: 1px solid var(--purple-light); border-right: 1px solid var(--purple-light); transform: rotate(45deg); }

/* Workstreams */
.method { background: var(--paper); }
.workstreams { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.workstreams article { min-height: 320px; padding: 29px 26px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.45); transition: background .2s, transform .2s; }
.workstreams article:hover { z-index: 1; background: #fff; transform: translateY(-3px); }
.workstreams article > span { color: var(--purple); font: 9px Arial, sans-serif; }
.workstreams small { float: right; color: #9b9ca6; font: 8px Arial, sans-serif; letter-spacing: .13em; }
.workstreams h3 { margin: 75px 0 15px; font-size: 22px; }
.workstreams p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }
.workstreams b { display: block; margin-top: 26px; color: var(--purple); font-size: 11px; }

/* Page anatomy */
.anatomy { background: #fff; }
.asset-system { background: #fff; }
.scenario { background: #fff; }
.delivery { background: #fff; }
.delivery-board { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.delivery-board article { min-height: 420px; padding: 27px 24px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--paper); transition: background .25s, transform .25s; }
.delivery-board article:hover { z-index: 1; background: #fff; transform: translateY(-3px); }
.delivery-board article > span { color: var(--purple); font: 9px Arial, sans-serif; }
.delivery-board small { float: right; color: #999ba5; font: 7px Arial, sans-serif; letter-spacing: .12em; }
.delivery-board h3 { margin: 82px 0 24px; font-size: 21px; }
.delivery-board ul { margin: 0; padding: 0; list-style: none; }
.delivery-board li { padding: 12px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.acceptance-strip { display: grid; grid-template-columns: 115px repeat(4, 1fr); margin-top: 48px; border-top: 2px solid var(--ink); border-bottom: 1px solid var(--line); }
.acceptance-strip > span, .acceptance-strip > p { min-height: 115px; margin: 0; padding: 23px 18px; border-right: 1px solid var(--line); font-size: 11px; line-height: 1.75; }
.acceptance-strip > span { color: #fff; background: var(--ink); font-weight: 700; }
.acceptance-strip p { color: var(--muted); }
.acceptance-strip p:last-child { border-right: 0; }
.acceptance-strip b { display: block; margin-bottom: 9px; color: var(--purple); font-size: 11px; }
.scenario-board { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.scenario-board article { min-height: 290px; padding: 27px 25px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--paper); transition: background .25s, transform .25s; }
.scenario-board article:hover { z-index: 1; background: #fff; transform: translateY(-3px); }
.scenario-board article > span { color: var(--purple); font: 9px Arial, sans-serif; }
.scenario-board small { float: right; color: #999ba5; font: 7px Arial, sans-serif; letter-spacing: .12em; }
.scenario-board h3 { margin: 70px 0 15px; font-size: 21px; }
.scenario-board p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.8; }
.scenario-board b { display: block; margin-top: 25px; color: var(--purple); font-size: 10px; }
.response-principles { display: grid; grid-template-columns: 115px repeat(4, 1fr); margin-top: 48px; border-top: 2px solid var(--ink); border-bottom: 1px solid var(--line); }
.response-principles > span, .response-principles > p { min-height: 115px; margin: 0; padding: 23px 18px; border-right: 1px solid var(--line); font-size: 11px; line-height: 1.75; }
.response-principles > span { color: #fff; background: var(--ink); font-weight: 700; }
.response-principles p { color: var(--muted); }
.response-principles p:last-child { border-right: 0; }
.response-principles b { display: block; margin-bottom: 9px; color: var(--purple); font-size: 11px; }
.asset-board { position: relative; min-height: 610px; display: grid; grid-template-columns: 1fr 1fr; gap: 18px; padding: 28px; border: 1px solid var(--line); background: var(--paper); box-shadow: 16px 16px 0 var(--purple-pale); }
.asset-board::before, .asset-board::after { content: ""; position: absolute; z-index: 0; inset: 50% auto auto 50%; border: 1px solid rgba(103,84,247,.18); border-radius: 50%; transform: translate(-50%,-50%); pointer-events: none; }
.asset-board::before { width: 55%; aspect-ratio: 1; }
.asset-board::after { width: 78%; aspect-ratio: 1; }
.asset-core { position: absolute; z-index: 2; top: 50%; left: 50%; width: 260px; min-height: 190px; padding: 30px; color: #fff; background: var(--purple); transform: translate(-50%,-50%); }

/* Roadmap */
.roadmap { color: #fff; background: var(--ink-soft); }
.roadmap-track { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--dark-line); border-left: 1px solid var(--dark-line); }
.roadmap-track article { min-height: 475px; padding: 30px 27px; border-right: 1px solid var(--dark-line); border-bottom: 1px solid var(--dark-line); }
.roadmap-time { display: flex; align-items: baseline; gap: 8px; }
.roadmap-time span { color: var(--purple-light); font: 8px Arial, sans-serif; }
.roadmap-time b { font: 600 25px Arial, sans-serif; }
.roadmap-track article > small { display: block; margin-top: 70px; color: rgba(255,255,255,.35); font: 8px Arial, sans-serif; letter-spacing: .14em; }
.roadmap-track h3 { margin: 13px 0 25px; font-size: 23px; }
.roadmap-track ul { margin: 0; padding: 0; list-style: none; }
.roadmap-track li { padding: 11px 0; border-top: 1px solid var(--dark-line); color: rgba(255,255,255,.6); font-size: 12px; }
.roadmap-track p { margin: 32px 0 0; color: var(--purple-light); font-size: 10px; line-height: 1.7; }

/* Measurement */
.measurement { background: #fff; }
.metric-table { border-top: 2px solid var(--ink); }
.metric-table > div { display: grid; grid-template-columns: .65fr 1fr 1fr 1fr; border-bottom: 1px solid var(--line); }
.metric-table span, .metric-table b, .metric-table p { min-height: 90px; margin: 0; padding: 22px 18px; border-left: 1px solid var(--line); font-size: 12px; line-height: 1.75; }
.metric-table > div > :first-child { border-left: 0; }
.metric-head { color: #fff; background: var(--ink); }
.metric-head span { min-height: 58px; color: rgba(255,255,255,.7); font-size: 10px; }
.metric-table b { font-size: 13px; }
.metric-table p { color: var(--muted); }
.measurement-note { display: grid; grid-template-columns: 180px 1fr; gap: 30px; margin-top: 28px; padding: 25px 0; border-top: 1px solid var(--line); }
.measurement-note b { color: var(--purple); font-size: 12px; }
.measurement-note p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

/* References and FAQ */
.references { background: var(--paper); }
.reference-list { margin: 0; padding: 0; border-top: 2px solid var(--ink); list-style: none; }
.reference-list li { min-height: 105px; display: grid; grid-template-columns: 45px 1fr 100px; gap: 20px; align-items: center; border-bottom: 1px solid var(--line); }
.reference-list li > span { color: var(--purple); font: 9px Arial, sans-serif; }
.reference-list b { font-size: 14px; }
.reference-list p { margin: 8px 0 0; color: var(--muted); font-size: 11px; }
.reference-list a { color: var(--purple); font-size: 10px; font-weight: 700; text-align: right; }
.source-date { margin: 25px 0 0; color: var(--muted); font-size: 11px; line-height: 1.7; }
.faq { background: #fff; }
.faq-layout { display: grid; grid-template-columns: .78fr 1.22fr; gap: 105px; }
.faq-intro { position: sticky; top: 115px; align-self: start; }
.faq-intro h2 { margin: 0; font-size: clamp(37px, 4vw, 52px); line-height: 1.3; letter-spacing: -.045em; }
.faq-intro > p { max-width: 430px; margin: 26px 0; color: var(--muted); font-size: 13px; line-height: 1.85; }
.faq-intro > a { display: inline-flex; gap: 15px; padding-bottom: 6px; border-bottom: 1px solid var(--ink); font-size: 12px; font-weight: 700; }
.faq-intro > a span { color: var(--purple); }
.faq-list { border-top: 2px solid var(--ink); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item button { width: 100%; display: grid; grid-template-columns: 38px 1fr 24px; gap: 14px; align-items: center; padding: 28px 0; border: 0; color: var(--ink); background: transparent; text-align: left; cursor: pointer; }
.faq-item button span { color: var(--purple); font: 9px Arial, sans-serif; }
.faq-item button b { font-size: 16px; }
.faq-item button i { width: 20px; height: 20px; position: relative; }
.faq-item button i::before, .faq-item button i::after { content: ""; position: absolute; top: 9px; left: 3px; width: 14px; height: 1.5px; background: var(--ink); transition: transform .2s; }
.faq-item button i::after { transform: rotate(90deg); }
.faq-item.open button i::after { transform: rotate(0); }
.faq-answer { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .3s var(--ease); }
.faq-answer > p { min-height: 0; overflow: hidden; margin: 0; padding: 0 36px; color: var(--muted); font-size: 13px; line-height: 1.85; }
.faq-item.open .faq-answer { grid-template-rows: 1fr; }
.faq-item.open .faq-answer > p { padding-bottom: 28px; }

/* Final and footer */
.final-cta { position: relative; overflow: hidden; padding: 115px 0; color: #fff; background: var(--purple); }
.final-grid { opacity: .4; mask-image: none; }
.final-layout { position: relative; z-index: 1; display: grid; grid-template-columns: 1.25fr .75fr; gap: 90px; align-items: end; }
.final-layout small { color: rgba(255,255,255,.55); font: 8px Arial, sans-serif; letter-spacing: .15em; }
.final-layout h2 { margin: 19px 0 0; font-size: clamp(41px, 4.6vw, 60px); line-height: 1.25; letter-spacing: -.05em; }
.final-layout p { margin: 0 0 28px; color: rgba(255,255,255,.72); font-size: 14px; line-height: 1.85; }
.button-white { color: var(--ink); background: #fff; }
.final-print { width: max-content; display: block; margin-top: 24px; padding: 0 0 6px; border: 0; border-bottom: 1px solid rgba(255,255,255,.5); color: #fff; background: transparent; font-size: 11px; cursor: pointer; }
.site-footer { padding: 68px 0 0; background: #f0f1f5; }
.footer-main { display: grid; grid-template-columns: .8fr 1.2fr; gap: 90px; padding-bottom: 55px; }
.footer-brand img { width: 116px; }
.footer-brand p { max-width: 350px; margin: 24px 0 0; color: var(--muted); font-size: 12px; line-height: 1.8; }
.footer-nav { display: grid; grid-template-columns: repeat(3, 1fr); gap: 35px; }
.footer-nav div { display: flex; flex-direction: column; gap: 12px; font-size: 11px; }
.footer-nav b { margin-bottom: 8px; font-size: 12px; }
.footer-nav a { color: var(--muted); }
.footer-nav a:hover { color: var(--purple); }
.footer-bottom { min-height: 70px; display: flex; align-items: center; justify-content: space-between; border-top: 1px solid var(--line); color: var(--muted); font-size: 10px; }
.footer-bottom span:last-child { display: flex; gap: 20px; }
.mobile-contact { display: none; }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 1040px) {
  .desktop-nav { gap: 19px; }
  .header-link { display: none; }
  .hero-layout { gap: 40px; }
  .report-grid { grid-template-columns: 130px 1fr; gap: 45px; }
  .section-heading, .summary-lead { grid-template-columns: 1fr 270px; gap: 40px; }
  .faq-layout { gap: 65px; }
}

@media (max-width: 820px) {
  .desktop-nav, .header-actions > .button-small { display: none; }
  .header-actions { margin-left: auto; }
  .menu-toggle { display: block; }
  .hero { min-height: auto; padding-top: 118px; }
  .hero-layout { grid-template-columns: 1fr; }
  .hero-copy { max-width: 700px; }
  .hero-cover { max-width: 680px; margin-inline: auto; }
  .report-grid { grid-template-columns: 1fr; }
  .chapter-mark { position: static; display: grid; grid-template-columns: 40px auto 1fr; align-items: center; }
  .chapter-mark span { margin: 0; }
  .chapter-mark small { text-align: right; }
  .section-heading, .summary-lead { grid-template-columns: 1fr; gap: 25px; }
  .section-heading .section-kicker, .summary-lead .section-kicker { grid-column: auto; margin-bottom: 0; }
  .workstreams { grid-template-columns: 1fr 1fr; }
  .asset-board { min-height: 570px; }
  .scenario-board { grid-template-columns: 1fr 1fr; }
  .delivery-board { grid-template-columns: 1fr 1fr; }
  .acceptance-strip { grid-template-columns: 1fr 1fr; }
  .acceptance-strip > span { grid-column: 1 / -1; min-height: auto; }
  .response-principles { grid-template-columns: 1fr 1fr; }
  .response-principles > span { grid-column: 1 / -1; min-height: auto; }
  .account-map { grid-template-columns: 1fr 1fr; }
  .account-map article, .account-map article:nth-child(4) { grid-column: auto; }
  .account-map article:last-child { grid-column: 1 / -1; }
  .content-flow { grid-template-columns: 1fr; }
  .flow-arrow { min-height: 48px; transform: rotate(90deg); }
  .anatomy-layout { gap: 40px; }
  .roadmap-track { grid-template-columns: 1fr; }
  .roadmap-track article { min-height: auto; }
  .roadmap-track article > small { margin-top: 40px; }
  .faq-layout, .final-layout { grid-template-columns: 1fr; }
  .faq-intro { position: static; }
}

@media (max-width: 560px) {
  body { padding-bottom: 62px; }
  [id] { scroll-margin-top: 78px; }
  .shell { width: min(calc(100% - 28px), var(--shell)); }
  .header-inner { height: 68px; }
  .brand { width: 93px; }
  .section { padding: 80px 0; }
  .hero { padding-top: 96px; }
  .breadcrumb { display: none; }
  .hero h1 { font-size: clamp(39px, 11.5vw, 48px); line-height: 1.16; }
  .hero-slogan { margin-top: 19px; font-size: 18px; }
  .hero-lead { font-size: 14px; }
  .hero-actions { flex-direction: column; align-items: stretch; gap: 16px; }
  .hero-actions .button { width: 100%; }
  .text-button { align-self: flex-start; }
  .hero-meta { display: grid; grid-template-columns: repeat(3, 1fr); }
  .hero-meta div { min-width: 0; padding-left: 10px; }
  .hero-meta dd { font-size: 9px; }
  .hero-cover { margin-top: 10px; box-shadow: 10px 10px 0 rgba(103,84,247,.14); }
  .hero-cover figcaption { grid-template-columns: 1fr; gap: 6px; min-height: auto; }
  .hero-cover figcaption b { text-align: left; }
  .hero-strip { grid-template-columns: 1fr 1fr; margin-top: 28px; }
  .hero-strip span { min-height: 60px; padding: 12px; }
  .hero-strip span:nth-child(3), .hero-strip span:nth-child(5) { border-left: 0; border-top: 1px solid rgba(255,255,255,.12); }
  .hero-strip span:nth-child(4) { border-top: 1px solid rgba(255,255,255,.12); }
  .chapter-mark { grid-template-columns: 40px 1fr; margin-bottom: 40px; }
  .chapter-mark small { display: none; }
  .section-heading, .summary-lead { margin-bottom: 45px; }
  .section-heading h2, .summary-lead h2 { font-size: 32px; line-height: 1.4; }
  .shift-list article { grid-template-columns: 42px 1fr; min-height: 145px; }
  .shift-list h3 { font-size: 20px; }
  .evidence-note { padding: 23px 20px; }
  .conversion-stack article { grid-template-columns: 37px 1fr; padding: 22px 10px; }
  .conversion-stack article > b { grid-column: 2; text-align: left; }
  .brand-stack article { grid-template-columns: 37px 1fr; padding: 22px 10px; }
  .brand-stack article > b { grid-column: 2; text-align: left; }
  .response-stack article { grid-template-columns: 37px 1fr; padding: 22px 10px; }
  .response-stack article > b { grid-column: 2; text-align: left; }
  .website-stack article { grid-template-columns: 37px 1fr; padding: 22px 10px; }
  .website-stack article > b { grid-column: 2; text-align: left; }
  .risk-levels { padding: 22px 16px; }
  .risk-levels > div { grid-template-columns: 1fr 1fr; }
  .journey { padding: 22px 16px; }
  .journey > div { grid-template-columns: repeat(5, 1fr); gap: 5px; text-align: center; }
  .journey i { display: none; }
  .journey span { padding: 10px 3px; border: 1px solid var(--dark-line); font-size: 10px; }
  .account-map { grid-template-columns: 1fr; }
  .account-map article, .account-map article:nth-child(4), .account-map article:last-child { grid-column: auto; min-height: 245px; }
  .account-map h3 { margin-top: 58px; }
  .workstreams { grid-template-columns: 1fr; }
  .workstreams article { min-height: 270px; }
  .workstreams h3 { margin-top: 60px; }
  .anatomy-layout { grid-template-columns: 1fr; }
  .page-model { padding: 16px; box-shadow: 9px 9px 0 var(--purple-pale); }
  .asset-board { min-height: auto; grid-template-columns: 1fr; padding: 14px; box-shadow: 9px 9px 0 var(--purple-pale); }
  .asset-board::before, .asset-board::after { display: none; }
  .asset-core { position: static; width: auto; min-height: 205px; transform: none; }
  .asset-board article { min-height: 205px; }
  .asset-board article:nth-of-type(2), .asset-board article:nth-of-type(4) { text-align: left; }
  .asset-board article:nth-of-type(2) p, .asset-board article:nth-of-type(4) p { margin-left: 0; }
  .asset-board article h3 { margin-top: 55px; }
  .asset-rules { grid-template-columns: 1fr; margin-top: 50px; }
  .asset-rules li { min-height: 150px; padding: 22px 16px; }
  .scenario-board { grid-template-columns: 1fr; }
  .scenario-board article { min-height: 250px; }
  .scenario-board h3 { margin-top: 55px; }
  .response-principles { grid-template-columns: 1fr; }
  .response-principles > span { grid-column: auto; }
  .response-principles > span, .response-principles > p { min-height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .delivery-board { grid-template-columns: 1fr; }
  .delivery-board article { min-height: 330px; }
  .delivery-board h3 { margin-top: 62px; }
  .acceptance-strip { grid-template-columns: 1fr; }
  .acceptance-strip > span { grid-column: auto; }
  .acceptance-strip > span, .acceptance-strip > p { min-height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .content-flow { padding: 14px; box-shadow: 9px 9px 0 var(--purple-pale); }
  .flow-source, .flow-core, .flow-output { min-height: auto; }
  .content-flow h3 { margin-top: 38px; }
  .content-rules { grid-template-columns: 1fr; margin-top: 50px; }
  .content-rules li { min-height: 155px; padding: 22px 16px; }
  .metric-table { width: 100%; max-width: 100%; overflow-x: auto; }
  .metric-table > div { min-width: 700px; }
  .measurement-note { grid-template-columns: 1fr; gap: 13px; }
  .reference-list li { grid-template-columns: 30px 1fr; padding: 20px 0; }
  .reference-list a { grid-column: 2; text-align: left; }
  .faq-layout { gap: 52px; }
  .faq-intro h2 { font-size: 34px; }
  .faq-item button { grid-template-columns: 30px 1fr 20px; gap: 8px; }
  .faq-item button b { font-size: 14px; }
  .faq-answer > p { padding-inline: 38px 7px; font-size: 12px; }
  .final-cta { padding: 76px 0; }
  .final-layout { gap: 42px; }
  .final-layout h2 { font-size: 36px; }
  .footer-main { grid-template-columns: 1fr; gap: 38px; padding-bottom: 42px; }
  .footer-nav { grid-template-columns: 1fr 1fr; }
  .footer-nav div:first-child { display: none; }
  .footer-bottom { min-height: 90px; flex-direction: column; align-items: flex-start; justify-content: center; gap: 10px; }
  .footer-bottom span:last-child { gap: 13px; }
  .mobile-contact { position: fixed; z-index: 100; inset: auto 0 0; height: 62px; display: grid; grid-template-columns: .78fr 1.22fr; gap: 7px; padding: 7px; border-top: 1px solid var(--line); background: rgba(255,255,255,.96); backdrop-filter: blur(12px); }
  .mobile-contact a { display: grid; place-items: center; border: 1px solid var(--line); background: #fff; font-size: 12px; font-weight: 700; }
  .mobile-contact a:last-child { color: #fff; border-color: var(--purple); background: var(--purple); }
}

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

@media print {
  @page { size: A4; margin: 15mm; }
  body { padding: 0; color: #111; background: #fff; }
  .site-header, .reading-progress, .mobile-contact, .hero-actions, .final-cta, .site-footer, .skip-link { display: none !important; }
  .hero { min-height: auto; padding: 28mm 0 18mm; color: #111; background: #fff; }
  .hero::before, .hero-grid, .hero-strip { display: none; }
  .hero-layout { grid-template-columns: 1fr 1fr; gap: 12mm; }
  .hero h1, .hero-slogan { color: #111; }
  .hero h1 em, .eyebrow { color: var(--purple); }
  .hero-lead { color: #555; }
  .hero-meta dt { color: #777; }
  .hero-meta dd { color: #333; }
  .hero-cover { border-color: #ccc; box-shadow: none; }
  .hero-cover figcaption { color: #111; border-color: #ccc; }
  .section { padding: 14mm 0; color: #111 !important; background: #fff !important; }
  .shell { width: 100%; }
  .report-grid { grid-template-columns: 28mm 1fr; gap: 8mm; }
  .chapter-mark { position: static; }
  .chapter-mark.light, .chapter-mark.light b, .section-heading.light h2 { color: #111; }
  .section-heading.light > p { color: #666; }
  .conversion-stack, .journey, .roadmap-track { border-color: #ccc; }
  .conversion-stack article, .roadmap-track article { color: #111; border-color: #ccc; }
  .conversion-stack p, .conversion-stack article > b, .roadmap-track li { color: #555; border-color: #ddd; }
  .conversion-stack small { color: #777; }
  .workstreams article, .shift-list article, .anatomy-list li, .faq-item { break-inside: avoid; }
  .reveal { opacity: 1 !important; transform: none !important; }
  .faq-answer { grid-template-rows: 1fr; }
  .faq-answer > p { padding-bottom: 20px; }
  a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 7pt; word-break: break-all; }
}


/* AI GEO whitepaper additions */
.geo-stack { border-top: 1px solid var(--dark-line); }
.geo-stack article { min-height: 115px; display: grid; grid-template-columns: 55px 1fr 230px; gap: 22px; align-items: center; padding: 23px 25px; border-bottom: 1px solid var(--dark-line); transition: background .25s, padding .25s; }
.geo-stack article:hover { padding-left: 34px; background: rgba(103,84,247,.13); }
.geo-stack article > span { color: var(--purple-light); font: 9px Arial, sans-serif; }
.geo-stack small { color: rgba(255,255,255,.32); font: 7px Arial, sans-serif; letter-spacing: .14em; }
.geo-stack h3 { margin: 8px 0 0; font-size: 22px; }
.geo-stack p { margin: 7px 0 0; color: rgba(255,255,255,.47); font-size: 11px; }
.geo-stack article > b { color: rgba(255,255,255,.68); font-size: 11px; font-weight: 400; text-align: right; }
.answer-anatomy { background: #fff; }
.answer-board { display: grid; grid-template-columns: .82fr 1.18fr; gap: 0; border: 1px solid var(--line); background: var(--paper); box-shadow: 16px 16px 0 var(--purple-pale); }
.answer-question { min-height: 525px; display: flex; flex-direction: column; justify-content: space-between; padding: 38px; color: #fff; background: var(--purple); }
.answer-question > span { font: 9px Arial, sans-serif; letter-spacing: .14em; color: rgba(255,255,255,.6); }
.answer-question h3 { margin: auto 0 18px; font-size: 34px; line-height: 1.35; }
.answer-question p { margin: 0; color: rgba(255,255,255,.72); font-size: 12px; line-height: 1.8; }
.answer-units { display: grid; grid-template-columns: 1fr 1fr; }
.answer-units article { min-height: 175px; padding: 26px; border-left: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.answer-units article:nth-last-child(-n+2) { border-bottom: 0; }
.answer-units span { color: var(--purple); font: 9px Arial, sans-serif; }
.answer-units h4 { margin: 35px 0 10px; font-size: 17px; }
.answer-units p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.75; }
.answer-rule { margin-top: 48px; padding: 27px 30px; border-left: 3px solid var(--purple); background: var(--paper); }
.answer-rule b { font-size: 13px; }
.answer-rule p { margin: 11px 0 0; color: var(--muted); font-size: 12px; line-height: 1.8; }
.scenario-board.compact article { min-height: 270px; }
.monitor-note { margin-top: 28px; padding: 24px 26px; color: #fff; background: var(--ink); }
.monitor-note b { color: var(--purple-light); font-size: 12px; }
.monitor-note p { margin: 9px 0 0; color: rgba(255,255,255,.62); font-size: 12px; line-height: 1.8; }

@media (max-width: 820px) {
  .answer-board { grid-template-columns: 1fr; }
  .answer-question { min-height: 330px; }
  .answer-units article { border-left: 0; border-top: 1px solid var(--line); }
}
@media (max-width: 560px) {
  .geo-stack article { grid-template-columns: 37px 1fr; padding: 22px 10px; }
  .geo-stack article > b { grid-column: 2; text-align: left; }
  .answer-board { box-shadow: 9px 9px 0 var(--purple-pale); }
  .answer-question { min-height: 300px; padding: 27px 22px; }
  .answer-question h3 { font-size: 27px; }
  .answer-units { grid-template-columns: 1fr; }
  .answer-units article { min-height: auto; border-left: 0; border-top: 1px solid var(--line); border-bottom: 0; }
  .answer-units h4 { margin-top: 26px; }
  .scenario-board.compact article { min-height: 235px; }
}



/* SEO whitepaper additions */
.seo-stack { border-top: 1px solid var(--dark-line); }
.seo-stack article { min-height: 115px; display: grid; grid-template-columns: 55px 1fr 230px; gap: 22px; align-items: center; padding: 23px 25px; border-bottom: 1px solid var(--dark-line); transition: background .25s, padding .25s; }
.seo-stack article:hover { padding-left: 34px; background: rgba(103,84,247,.13); }
.seo-stack article > span { color: var(--purple-light); font: 9px Arial, sans-serif; }
.seo-stack small { color: rgba(255,255,255,.32); font: 7px Arial, sans-serif; letter-spacing: .14em; }
.seo-stack h3 { margin: 8px 0 0; font-size: 22px; }
.seo-stack p { margin: 7px 0 0; color: rgba(255,255,255,.47); font-size: 11px; }
.seo-stack article > b { color: rgba(255,255,255,.68); font-size: 11px; font-weight: 400; text-align: right; }
.search-result-preview { margin-top: 48px; padding: 29px 31px; border: 1px solid var(--line); background: var(--paper); }
.search-result-preview > small { display: block; color: var(--purple); font: 8px Arial, sans-serif; letter-spacing: .14em; }
.search-result-preview h4 { max-width: 720px; margin: 22px 0 8px; color: #2a55bc; font-size: 21px; font-weight: 500; }
.search-result-preview p { max-width: 760px; margin: 0; color: var(--muted); font-size: 12px; line-height: 1.75; }
.search-result-preview b { display: block; margin-top: 16px; color: var(--ink); font-size: 10px; }
.seo-risk-note { margin-top: 28px; padding: 24px 26px; color: #fff; background: var(--ink); }
.seo-risk-note b { color: var(--purple-light); font-size: 12px; }
.seo-risk-note p { margin: 9px 0 0; color: rgba(255,255,255,.62); font-size: 12px; line-height: 1.8; }

@media (max-width: 560px) {
  .seo-stack article { grid-template-columns: 37px 1fr; padding: 22px 10px; }
  .seo-stack article > b { grid-column: 2; text-align: left; }
  .search-result-preview { padding: 23px 20px; }
  .search-result-preview h4 { font-size: 17px; line-height: 1.5; }
}