:root {
  --ink: #171713;
  --ink-soft: #4f4d43;
  --paper: #f3f0e7;
  --paper-deep: #e8e3d6;
  --line: rgba(23, 23, 19, .18);
  --acid: #f05a3c;
  --green: #315e4c;
  --serif: "Noto Serif SC", "Songti SC", serif;
  --sans: "DM Sans", "PingFang SC", sans-serif;
  --gutter: clamp(22px, 4vw, 72px);
  --max: 1440px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  text-rendering: optimizeLegibility;
}
body.dialog-open { overflow: hidden; }
button, input { font: inherit; }
a { color: inherit; }
img { display: block; max-width: 100%; }

.skip-link {
  position: fixed;
  z-index: 200;
  left: 16px;
  top: -80px;
  padding: 10px 14px;
  background: var(--paper);
  color: var(--ink);
  transition: top .2s ease;
}
.skip-link:focus { top: 16px; }

.site-header {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto 0;
  height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--gutter);
  color: white;
  border-bottom: 1px solid rgba(255,255,255,.18);
  transition: color .3s ease, background .3s ease, backdrop-filter .3s ease;
}
.site-header.scrolled {
  color: var(--ink);
  background: rgba(243,240,231,.92);
  backdrop-filter: blur(18px);
  border-color: var(--line);
}
.wordmark { display: flex; align-items: baseline; gap: 15px; text-decoration: none; }
.wordmark span { font-size: 15px; font-weight: 700; letter-spacing: .12em; }
.wordmark small { font-size: 10px; letter-spacing: .12em; opacity: .65; }
.nav { display: flex; gap: 28px; }
.nav a {
  position: relative;
  text-decoration: none;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .08em;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -8px;
  height: 1px;
  background: currentColor;
  transition: right .25s ease;
}
.nav a:hover::after, .nav a.active::after { right: 0; }
.nav-toggle { display: none; border: 0; background: transparent; padding: 10px; }
.nav-toggle span { display: block; width: 22px; height: 1px; background: currentColor; margin: 5px 0; }

.hero {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(430px, .95fr);
  grid-template-rows: 1fr auto;
  align-items: center;
  gap: 0;
  padding: 108px var(--gutter) 34px;
  color: #f6f2e8;
  background: #171713;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .14;
  pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 72px 72px;
}
.hero-copy { position: relative; z-index: 2; max-width: 850px; padding: 6vh 4vw 8vh 0; }
.kicker, .eyebrow {
  margin: 0 0 22px;
  color: var(--acid);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.hero h1 {
  margin: 0;
  max-width: 900px;
  font-family: var(--serif);
  font-size: clamp(48px, 6.3vw, 100px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -.055em;
}
.hero h1 em { color: var(--acid); font-style: normal; }
.hero-deck { max-width: 620px; margin: 34px 0 0; color: rgba(246,242,232,.72); font-size: clamp(16px, 1.4vw, 20px); line-height: 1.75; }
.hero-actions { display: flex; align-items: center; gap: 28px; margin-top: 38px; }
.primary-link {
  display: inline-flex;
  align-items: center;
  gap: 34px;
  padding: 15px 18px;
  color: var(--ink);
  background: var(--acid);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: transform .25s ease, background .25s ease;
}
.primary-link:hover { transform: translateY(-3px); background: #ff7355; }
.text-link { color: rgba(255,255,255,.76); font-size: 13px; text-underline-offset: 6px; }
.hero-visual { position: relative; z-index: 1; min-width: 0; }
.hero-image-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1.15;
  background: #282821;
}
.hero-image-wrap::after { content: ""; position: absolute; inset: 0; box-shadow: inset 0 0 0 1px rgba(255,255,255,.12); }
.hero-image-wrap img { width: 100%; height: 100%; object-fit: cover; filter: saturate(.84) contrast(1.04); transition: transform 1.3s cubic-bezier(.2,.8,.2,1); }
.hero-visual:hover img { transform: scale(1.035); }
.hero-note {
  position: absolute;
  display: grid;
  gap: 2px;
  min-width: 172px;
  padding: 14px 16px;
  color: var(--ink);
  background: var(--paper);
  box-shadow: 0 18px 45px rgba(0,0,0,.22);
}
.hero-note b { font-family: var(--serif); font-size: 27px; }
.hero-note span { color: var(--ink-soft); font-size: 10px; }
.note-a { left: -42px; bottom: 36px; }
.note-b { right: -6px; top: 26px; background: var(--acid); }
.image-credit { margin: 9px 0 0; color: rgba(255,255,255,.4); font-size: 9px; letter-spacing: .08em; text-transform: uppercase; }
.hero-foot {
  position: relative;
  z-index: 2;
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,.18);
}
.hero-foot div { display: flex; align-items: baseline; gap: 16px; }
.hero-foot span { color: rgba(255,255,255,.38); font-size: 10px; letter-spacing: .1em; }
.hero-foot b { font-size: 11px; font-weight: 500; }

.section { position: relative; max-width: var(--max); margin: 0 auto; padding: 120px var(--gutter); border-bottom: 1px solid var(--line); }
.section-label { margin-bottom: 74px; padding-bottom: 14px; border-bottom: 1px solid var(--line); color: var(--ink-soft); font-size: 10px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
.section-heading { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(280px, .7fr); column-gap: 8vw; align-items: end; margin-bottom: 80px; }
.section-heading .eyebrow { grid-column: 1 / -1; }
.section-heading h2, .reviews-heading h2, .economics-head h2, .method-hero h2, .next-lead h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(44px, 5.6vw, 84px);
  line-height: 1.13;
  letter-spacing: -.055em;
}
.section-heading > p:last-child { max-width: 520px; margin: 0 0 8px; color: var(--ink-soft); font-size: 16px; line-height: 1.8; }

.verdict { background: var(--paper); }
.verdict-layout { display: grid; grid-template-columns: minmax(250px, .72fr) minmax(0, 1.28fr); gap: 9vw; }
.verdict-lead { position: sticky; top: 124px; align-self: start; }
.verdict-lead h2 { margin: 0; color: var(--green); font-family: var(--serif); font-size: clamp(52px, 6vw, 88px); line-height: .96; letter-spacing: -.055em; }
.verdict-lead > p:last-child { max-width: 390px; margin-top: 28px; color: var(--ink-soft); line-height: 1.8; }
.verdict-line { display: grid; grid-template-columns: 86px 1fr; gap: 28px; padding: 0 0 32px; margin-bottom: 34px; border-bottom: 1px solid var(--line); }
.verdict-line h3 { margin: 0 0 10px; font-family: var(--serif); font-size: clamp(22px, 2.3vw, 34px); line-height: 1.35; }
.verdict-line p { margin: 0; color: var(--ink-soft); line-height: 1.75; }
.status { align-self: start; display: inline-block; padding: 7px 9px; border: 1px solid currentColor; font-size: 10px; font-weight: 700; text-align: center; letter-spacing: .08em; }
.status-positive { color: var(--green); }
.status-warning { color: #91691f; }
.status-negative { color: #a23c2e; }
.decision-sentence { display: grid; grid-template-columns: 180px 1fr; gap: 40px; margin-top: 68px; padding: 30px 0 0; border-top: 4px solid var(--ink); }
.decision-sentence span { color: var(--ink-soft); font-size: 11px; font-weight: 700; letter-spacing: .1em; }
.decision-sentence p { margin: 0; font-family: var(--serif); font-size: clamp(22px, 2.5vw, 36px); line-height: 1.55; }
.decision-sentence b { color: var(--acid); }

.market { background: #e9e4d6; }
.trend-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(280px, .6fr); gap: 5vw; align-items: stretch; }
.trend-chart { margin: 0; padding: 30px 0 0; border-top: 1px solid var(--ink); }
.trend-chart figcaption { display: flex; justify-content: space-between; align-items: baseline; gap: 20px; }
.trend-chart figcaption span { color: var(--ink-soft); font-size: 11px; letter-spacing: .08em; }
.trend-chart figcaption b { font-family: var(--serif); font-size: 20px; }
.trend-chart svg { width: 100%; height: auto; margin-top: 20px; overflow: visible; }
.grid-lines line { stroke: rgba(23,23,19,.15); stroke-width: 1; }
.area { fill: url(#trendFill); }
.line { fill: none; stroke: var(--acid); stroke-width: 4; stroke-linecap: round; }
.points circle { fill: var(--paper); stroke: var(--acid); stroke-width: 4; }
.values text { fill: var(--ink); font-family: var(--serif); font-size: 18px; font-weight: 700; text-anchor: middle; }
.years text { fill: var(--ink-soft); font-family: var(--sans); font-size: 11px; text-anchor: middle; }
.chart-note { margin: -10px 0 0; color: var(--ink-soft); font-size: 11px; line-height: 1.7; }
.market-proof { display: grid; align-content: start; gap: 0; border-top: 1px solid var(--ink); }
.big-number { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: end; padding: 22px 0; border-bottom: 1px solid var(--line); }
.big-number b { font-family: var(--serif); font-size: clamp(34px, 4.3vw, 62px); line-height: 1; letter-spacing: -.05em; }
.big-number span { color: var(--ink-soft); font-size: 11px; line-height: 1.5; }
.market-proof > p { margin: 24px 0 0; color: var(--ink-soft); font-size: 12px; line-height: 1.75; }
.population-strip { display: grid; grid-template-columns: repeat(3, 1fr) 1.25fr; gap: 28px; margin-top: 74px; padding: 28px 0; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.population-strip div { display: grid; gap: 7px; }
.population-strip b { font-family: var(--serif); font-size: clamp(30px, 3.4vw, 48px); }
.population-strip span, .population-strip p { color: var(--ink-soft); font-size: 11px; line-height: 1.6; }
.population-strip p { margin: 0; padding-left: 28px; border-left: 1px solid var(--line); }
.channel-map { display: grid; grid-template-columns: .75fr 1.25fr; gap: 7vw; align-items: center; margin-top: 100px; }
.channel-intro h3 { margin: 0; font-family: var(--serif); font-size: clamp(36px, 4vw, 58px); line-height: 1.2; letter-spacing: -.04em; }
.channel-intro > p:last-child { max-width: 420px; margin-top: 25px; color: var(--ink-soft); line-height: 1.75; }
.channel-axis { position: relative; min-height: 430px; border-left: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.channel-axis::before, .channel-axis::after { content: ""; position: absolute; background: var(--line); }
.channel-axis::before { top: 50%; left: 0; right: 0; height: 1px; }
.channel-axis::after { left: 50%; top: 0; bottom: 0; width: 1px; }
.axis-label { position: absolute; color: var(--ink-soft); font-size: 10px; letter-spacing: .08em; }
.axis-label.y { left: -4px; top: -24px; }
.axis-label.x { right: 0; bottom: -25px; }
.channel-dot { position: absolute; display: grid; gap: 4px; width: 138px; padding: 15px; border-radius: 50%; aspect-ratio: 1; align-content: center; text-align: center; color: var(--paper); background: var(--ink); box-shadow: 0 18px 40px rgba(23,23,19,.15); transition: transform .25s ease; }
.channel-dot:hover, .channel-dot:focus { transform: translateY(-6px); outline: none; }
.channel-dot b { font-family: var(--serif); font-size: 18px; }
.channel-dot span { font-size: 9px; opacity: .7; }
.channel-dot.amazon { right: 5%; bottom: 7%; width: 162px; background: var(--acid); }
.channel-dot.walmart { right: 28%; bottom: 28%; width: 130px; }
.channel-dot.bestbuy { left: 18%; top: 14%; width: 146px; background: var(--green); }
.channel-dot.target { right: 12%; top: 7%; width: 118px; background: #8c7d5d; }

.brands { background: var(--paper); }
.product-stories { display: grid; gap: 130px; }
.product-story { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(300px, .85fr); gap: 7vw; align-items: center; }
.product-story-reverse .product-image { order: 2; }
.product-story-reverse .product-copy { order: 1; }
.product-image { position: relative; overflow: hidden; min-height: 460px; background: #ddd7c7; }
.product-image::after { content: ""; position: absolute; inset: 0; box-shadow: inset 0 0 0 1px rgba(23,23,19,.12); pointer-events: none; }
.product-image img { width: 100%; height: 100%; min-height: 460px; object-fit: cover; transition: transform .7s ease; }
.product-image-tall img { object-fit: contain; background: #ede9df; }
.product-story:hover .product-image img { transform: scale(1.025); }
.product-index { margin: 0 0 20px; color: var(--acid); font-size: 10px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.product-copy h3 { margin: 0; font-family: var(--serif); font-size: clamp(42px, 5vw, 72px); line-height: 1.08; letter-spacing: -.05em; }
.product-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin: 30px 0; padding: 20px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.product-stats span { display: grid; gap: 6px; color: var(--ink-soft); font-size: 10px; }
.product-stats b { color: var(--ink); font-family: var(--serif); font-size: 24px; }
.product-copy > p:not(.product-index) { color: var(--ink-soft); font-size: 15px; line-height: 1.8; }
.detail-button { margin-top: 18px; padding: 0 0 8px; border: 0; border-bottom: 1px solid var(--ink); color: var(--ink); background: transparent; font-size: 12px; font-weight: 700; cursor: pointer; }
.detail-button span { display: inline-block; margin-left: 28px; transition: transform .2s ease; }
.detail-button:hover span { transform: translate(3px,-3px); }

.reviews { color: #f4f0e6; background: #22221c; }
.reviews .section-label { border-color: rgba(255,255,255,.2); color: rgba(255,255,255,.45); }
.reviews-heading { display: grid; grid-template-columns: 1.15fr .85fr; gap: 8vw; align-items: end; }
.reviews-heading > p { margin: 0 0 8px; color: rgba(255,255,255,.58); line-height: 1.8; }
.review-viz { display: grid; grid-template-columns: 1fr 1fr; gap: 7vw; margin-top: 86px; }
.rating-distribution, .theme-bars { padding-top: 22px; border-top: 1px solid rgba(255,255,255,.28); }
.viz-title { display: flex; justify-content: space-between; gap: 20px; margin: 0 0 26px; font-family: var(--serif); font-size: 18px; }
.viz-title span { color: rgba(255,255,255,.4); font-family: var(--sans); font-size: 9px; letter-spacing: .08em; }
.rating-bar { display: flex; height: 72px; overflow: hidden; }
.rating-bar i { width: var(--w); display: grid; place-items: center; min-width: 0; color: white; background: var(--c); font-size: 10px; font-style: normal; white-space: nowrap; }
.rating-distribution > p:last-child { color: rgba(255,255,255,.46); font-size: 10px; line-height: 1.6; }
.theme-row { display: grid; grid-template-columns: 160px 1fr 50px; gap: 14px; align-items: center; margin-bottom: 14px; }
.theme-row span { color: rgba(255,255,255,.72); font-size: 11px; }
.theme-row b { position: relative; height: 4px; background: rgba(255,255,255,.11); }
.theme-row i { display: block; width: var(--p); height: 100%; background: #7b9c80; transform-origin: left; }
.theme-row.negative i { background: var(--acid); }
.theme-row em { font-size: 10px; font-style: normal; text-align: right; }
.review-findings { display: grid; grid-template-columns: repeat(3, 1fr); gap: 44px; margin-top: 90px; }
.finding { padding-top: 18px; border-top: 1px solid rgba(255,255,255,.25); }
.finding span { color: var(--acid); font-size: 10px; }
.finding h3 { margin: 22px 0 12px; font-family: var(--serif); font-size: 24px; }
.finding p { margin: 0; color: rgba(255,255,255,.55); font-size: 13px; line-height: 1.75; }
.evidence-warning { display: grid; grid-template-columns: 180px 1fr; gap: 40px; margin-top: 80px; padding: 24px 0; border-top: 4px solid var(--acid); }
.evidence-warning b { color: var(--acid); font-size: 11px; letter-spacing: .08em; }
.evidence-warning p { margin: 0; color: rgba(255,255,255,.64); line-height: 1.75; }

.agents { background: #dfe5dc; }
.agent-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 7vw; }
.agent-layout .section-heading { display: block; margin: 0; }
.agent-layout .section-heading h2 { margin-bottom: 28px; }
.agent-layout .section-heading > p:last-child { margin: 0; }
.agent-timeline { border-top: 1px solid var(--ink); }
.agent-timeline article { display: grid; grid-template-columns: 80px 1fr; gap: 22px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.agent-timeline time { color: var(--acid); font-size: 11px; font-weight: 700; }
.agent-timeline b { font-family: var(--serif); font-size: 19px; }
.agent-timeline p { margin: 8px 0 0; color: var(--ink-soft); font-size: 12px; line-height: 1.65; }
.agent-moat { margin-top: 80px; padding-top: 24px; border-top: 4px solid var(--ink); }
.agent-moat > p { margin: 0 0 26px; font-family: var(--serif); font-size: 24px; }
.moat-list { display: flex; flex-wrap: wrap; gap: 10px; }
.moat-list span { padding: 11px 15px; border: 1px solid rgba(23,23,19,.45); font-size: 11px; }

.economics { background: var(--paper); }
.economics-head { display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: end; }
.scenario-switch { display: flex; border-bottom: 1px solid var(--ink); }
.scenario-switch button { padding: 10px 14px; border: 0; color: var(--ink-soft); background: transparent; font-size: 11px; cursor: pointer; }
.scenario-switch button.active { color: var(--paper); background: var(--ink); }
.economics-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 7vw; margin-top: 84px; }
.price-table { border-top: 4px solid var(--ink); }
.price-head, .price-row { display: grid; grid-template-columns: 1fr 1fr 1fr; align-items: center; gap: 15px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.price-head { color: var(--ink-soft); font-size: 10px; letter-spacing: .08em; }
.price-row b { font-family: var(--serif); font-size: 28px; }
.price-row strong { font-family: var(--serif); font-size: 22px; transition: color .2s ease; }
.price-row em { justify-self: end; color: var(--ink-soft); font-size: 12px; font-style: normal; }
.price-row.featured { color: var(--acid); }
.cost-stack { padding-top: 4px; }
.cost-stack .viz-title span { color: var(--ink-soft); }
.cost-row { display: grid; grid-template-columns: 160px 1fr 68px; gap: 16px; align-items: center; margin: 14px 0; }
.cost-row span { color: var(--ink-soft); font-size: 10px; }
.cost-row i { height: 7px; background: linear-gradient(90deg, var(--ink) var(--p), rgba(23,23,19,.1) var(--p)); }
.cost-row b { font-size: 11px; text-align: right; }
.cost-row.contribution span, .cost-row.contribution b { color: var(--acid); font-weight: 700; }
.cost-row.contribution i { background: linear-gradient(90deg, var(--acid) var(--p), rgba(240,90,60,.12) var(--p)); }
.economics-caveat { margin: 70px 0 0; padding: 24px 0; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); color: var(--ink-soft); font-size: 12px; line-height: 1.8; }
.cash-gates { display: grid; grid-template-columns: repeat(3, 1fr); gap: 42px; margin-top: 70px; }
.cash-gates div { display: grid; gap: 8px; }
.cash-gates span { color: var(--ink-soft); font-size: 10px; }
.cash-gates b { font-family: var(--serif); font-size: clamp(30px, 3.4vw, 50px); }
.cash-gates small { color: var(--ink-soft); font-size: 10px; line-height: 1.5; }

.openings { background: #e9e4d6; }
.hypothesis-list { list-style: none; margin: 0; padding: 0; border-top: 4px solid var(--ink); }
.hypothesis-list li { display: grid; grid-template-columns: 70px 1fr 220px; gap: 30px; align-items: start; padding: 28px 0; border-bottom: 1px solid var(--line); }
.hypothesis-list > li > span { color: var(--acid); font-weight: 700; font-size: 12px; }
.hypothesis-list h3 { margin: 0 0 9px; font-family: var(--serif); font-size: clamp(21px, 2vw, 30px); }
.hypothesis-list p { max-width: 720px; margin: 0; color: var(--ink-soft); font-size: 13px; line-height: 1.7; }
.hypothesis-list em { color: var(--ink-soft); font-size: 10px; font-style: normal; text-align: right; }

.method { color: #f4f0e6; background: #171713; }
.method .section-label { border-color: rgba(255,255,255,.2); color: rgba(255,255,255,.45); }
.method-hero { max-width: 1050px; }
.mistake-list { margin-top: 86px; border-top: 1px solid rgba(255,255,255,.3); }
.mistake { display: grid; grid-template-columns: 60px 1fr 180px; gap: 34px; align-items: start; padding: 28px 0; border-bottom: 1px solid rgba(255,255,255,.16); }
.mistake > b { color: var(--acid); font-size: 11px; }
.mistake h3 { margin: 0 0 10px; font-family: var(--serif); font-size: 23px; }
.mistake p { max-width: 760px; margin: 0; color: rgba(255,255,255,.55); font-size: 13px; line-height: 1.7; }
.mistake > span { justify-self: end; padding: 6px 8px; border: 1px solid rgba(255,255,255,.3); color: rgba(255,255,255,.7); font-size: 9px; }
.research-system { display: grid; grid-template-columns: .75fr 1.25fr; gap: 8vw; margin-top: 110px; padding-top: 30px; border-top: 4px solid var(--acid); }
.system-copy h3 { margin: 0; font-family: var(--serif); font-size: clamp(32px, 4vw, 56px); line-height: 1.25; }
.research-system ol { list-style: none; margin: 0; padding: 0; counter-reset: method; }
.research-system li { display: grid; grid-template-columns: 130px 1fr; gap: 24px; padding: 15px 0; border-bottom: 1px solid rgba(255,255,255,.15); }
.research-system li b { font-size: 12px; }
.research-system li span { color: rgba(255,255,255,.55); font-size: 12px; line-height: 1.6; }

.next { background: var(--paper); }
.next-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 8vw; }
.next-lead > p:last-child { max-width: 460px; margin-top: 30px; color: var(--ink-soft); line-height: 1.75; }
.next-steps { border-top: 4px solid var(--ink); }
.next-steps article { display: grid; grid-template-columns: 54px 1fr; gap: 20px; padding: 23px 0; border-bottom: 1px solid var(--line); }
.next-steps article > span { color: var(--acid); font-size: 10px; font-weight: 700; }
.next-steps h3 { margin: 0 0 7px; font-family: var(--serif); font-size: 20px; }
.next-steps p { margin: 0; color: var(--ink-soft); font-size: 12px; line-height: 1.65; }
.stop-gates { margin-top: 90px; padding-top: 26px; border-top: 1px solid var(--ink); }
.stop-gates h3 { margin: 0 0 32px; font-family: var(--serif); font-size: 26px; }
.stop-gates ul { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); margin: 0; padding: 0; border-left: 1px solid var(--line); }
.stop-gates li { display: grid; gap: 10px; padding: 22px; border-right: 1px solid var(--line); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.stop-gates li:nth-child(n+4) { border-top: 0; }
.stop-gates span { color: var(--ink-soft); font-size: 10px; }
.stop-gates b { font-family: var(--serif); font-size: 26px; }

.sources { background: #e9e4d6; }
.sources-head { display: flex; justify-content: space-between; gap: 40px; align-items: end; }
.sources-head h2 { margin: 0; font-family: var(--serif); font-size: clamp(48px, 6vw, 82px); }
.source-filter { display: flex; flex-wrap: wrap; justify-content: end; gap: 5px; }
.source-filter button { padding: 8px 12px; border: 1px solid var(--line); color: var(--ink-soft); background: transparent; font-size: 10px; cursor: pointer; }
.source-filter button.active { color: var(--paper); background: var(--ink); }
.source-list { margin-top: 60px; border-top: 4px solid var(--ink); }
.source-item { display: grid; grid-template-columns: 54px 1fr 1fr; gap: 25px; align-items: center; padding: 18px 0; border-bottom: 1px solid var(--line); text-decoration: none; }
.source-item > span { display: grid; place-items: center; width: 28px; height: 28px; border: 1px solid var(--ink); border-radius: 50%; font-size: 10px; font-weight: 700; }
.source-item b { font-family: var(--serif); font-size: 15px; }
.source-item em { color: var(--ink-soft); font-size: 11px; font-style: normal; }
.source-item:hover b { color: var(--acid); }
.source-item.hidden { display: none; }
.source-foot { max-width: 980px; margin: 34px 0 0; color: var(--ink-soft); font-size: 10px; line-height: 1.75; }

.footer { display: grid; grid-template-columns: .7fr 1.6fr auto; gap: 5vw; align-items: start; padding: 50px var(--gutter); color: rgba(255,255,255,.62); background: var(--ink); }
.footer div { display: grid; gap: 6px; }
.footer span { color: white; font-size: 12px; font-weight: 700; letter-spacing: .12em; }
.footer b { font-size: 10px; }
.footer p { max-width: 800px; margin: 0; font-size: 10px; line-height: 1.7; }
.footer a { color: white; font-size: 10px; text-underline-offset: 5px; }

.product-dialog {
  width: min(1120px, calc(100vw - 40px));
  max-height: min(820px, calc(100svh - 40px));
  padding: 0;
  border: 0;
  color: var(--ink);
  background: var(--paper);
  box-shadow: 0 30px 100px rgba(0,0,0,.45);
}
.product-dialog::backdrop { background: rgba(10,10,8,.78); backdrop-filter: blur(5px); }
.product-dialog[open] { display: grid; grid-template-columns: minmax(320px,.8fr) minmax(420px,1.2fr); }
.dialog-close { position: absolute; z-index: 2; right: 18px; top: 14px; width: 40px; height: 40px; border: 0; color: var(--ink); background: rgba(243,240,231,.9); font-size: 28px; line-height: 1; cursor: pointer; }
.dialog-media { min-height: 620px; background: #ddd7c7; }
.dialog-media img { width: 100%; height: 100%; object-fit: cover; }
.dialog-content { overflow: auto; padding: 55px; }
.dialog-content h2 { margin: 0; font-family: var(--serif); font-size: 48px; line-height: 1.1; letter-spacing: -.04em; }
.dialog-summary { color: var(--ink-soft); line-height: 1.75; }
.dialog-content dl { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin: 30px 0; background: var(--line); }
.dialog-content dl div { display: grid; gap: 5px; padding: 14px; background: var(--paper); }
.dialog-content dt { color: var(--ink-soft); font-size: 9px; }
.dialog-content dd { margin: 0; font-family: var(--serif); font-size: 17px; }
.dialog-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 35px; }
.dialog-columns h3 { margin: 0 0 12px; font-family: var(--serif); font-size: 17px; }
.dialog-columns ul { margin: 0; padding-left: 17px; color: var(--ink-soft); font-size: 11px; line-height: 1.65; }
.dialog-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; padding-top: 18px; border-top: 1px solid var(--line); }
.dialog-links a { padding: 8px 10px; border: 1px solid var(--line); font-size: 10px; text-decoration: none; }
.dialog-links a:hover { border-color: var(--acid); color: var(--acid); }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.8,.2,1); }
.reveal.visible { opacity: 1; transform: translateY(0); }

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

@media (max-width: 980px) {
  .site-header { height: 68px; }
  .wordmark small, .nav { display: none; }
  .nav-toggle { display: block; color: inherit; }
  .site-header.menu-open .nav { position: absolute; display: grid; inset: 68px 0 auto 0; gap: 0; padding: 14px var(--gutter); color: var(--ink); background: var(--paper); border-bottom: 1px solid var(--line); }
  .site-header.menu-open .nav a { padding: 13px 0; border-bottom: 1px solid var(--line); }
  .hero { grid-template-columns: 1fr; grid-template-rows: auto auto auto; padding-top: 96px; }
  .hero-copy { padding: 2vh 0 48px; }
  .hero-visual { width: min(760px, 100%); margin-left: auto; }
  .hero-foot { grid-template-columns: 1fr; margin-top: 28px; gap: 12px; }
  .section { padding-top: 90px; padding-bottom: 90px; }
  .section-label { margin-bottom: 52px; }
  .verdict-layout, .trend-grid, .channel-map, .agent-layout, .economics-grid, .next-layout { grid-template-columns: 1fr; }
  .verdict-lead { position: static; margin-bottom: 40px; }
  .section-heading { grid-template-columns: 1fr; gap: 24px; }
  .population-strip { grid-template-columns: repeat(3,1fr); }
  .population-strip p { grid-column: 1/-1; padding: 18px 0 0; border-left: 0; border-top: 1px solid var(--line); }
  .channel-intro { margin-bottom: 35px; }
  .product-story { grid-template-columns: 1fr; gap: 40px; }
  .product-story-reverse .product-image, .product-story-reverse .product-copy { order: initial; }
  .reviews-heading, .review-viz, .research-system { grid-template-columns: 1fr; }
  .review-findings { grid-template-columns: 1fr; }
  .cash-gates { grid-template-columns: 1fr 1fr; }
  .stop-gates ul { grid-template-columns: repeat(2, 1fr); }
  .stop-gates li:nth-child(3) { border-top: 0; }
  .source-item { grid-template-columns: 45px 1fr; }
  .source-item em { grid-column: 2; }
  .product-dialog[open] { grid-template-columns: .8fr 1.2fr; }
  .dialog-content { padding: 40px; }
}

@media (max-width: 680px) {
  :root { --gutter: 20px; }
  .hero { min-height: auto; padding-bottom: 28px; }
  .hero h1 { font-size: clamp(42px, 13vw, 62px); }
  .hero-deck { font-size: 15px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 18px; }
  .hero-image-wrap { aspect-ratio: 1; }
  .note-a { left: 12px; bottom: 14px; }
  .note-b { right: 8px; top: 8px; }
  .hero-note { min-width: 136px; padding: 10px 12px; }
  .hero-note b { font-size: 20px; }
  .hero-foot div { display: grid; gap: 3px; }
  .section { padding-top: 74px; padding-bottom: 74px; }
  .section-heading, .section-label { margin-bottom: 44px; }
  .section-heading h2, .reviews-heading h2, .economics-head h2, .method-hero h2, .next-lead h2 { font-size: 43px; }
  .verdict-line { grid-template-columns: 64px 1fr; gap: 18px; }
  .verdict-line h3 { font-size: 21px; }
  .decision-sentence, .evidence-warning { grid-template-columns: 1fr; gap: 15px; }
  .trend-chart figcaption { align-items: flex-start; flex-direction: column; }
  .big-number { grid-template-columns: 1fr; }
  .population-strip { grid-template-columns: 1fr; }
  .population-strip p { grid-column: auto; }
  .channel-axis { min-height: 370px; }
  .channel-dot { width: 108px; }
  .channel-dot.amazon { width: 126px; }
  .channel-dot.bestbuy { width: 118px; }
  .channel-dot.target { width: 96px; }
  .product-stories { gap: 86px; }
  .product-image, .product-image img { min-height: 320px; }
  .product-stats { grid-template-columns: 1fr; }
  .rating-bar { height: 58px; }
  .theme-row { grid-template-columns: 124px 1fr 46px; }
  .reviews-heading { gap: 24px; }
  .agent-layout { gap: 48px; }
  .economics-head { grid-template-columns: 1fr; }
  .scenario-switch { width: max-content; margin-top: 24px; }
  .cost-row { grid-template-columns: 125px 1fr 58px; }
  .cash-gates { grid-template-columns: 1fr; }
  .hypothesis-list li, .mistake { grid-template-columns: 44px 1fr; gap: 18px; }
  .hypothesis-list em, .mistake > span { grid-column: 2; justify-self: start; text-align: left; }
  .research-system { gap: 52px; }
  .research-system li { grid-template-columns: 105px 1fr; }
  .stop-gates ul { grid-template-columns: 1fr 1fr; }
  .stop-gates li { padding: 16px; }
  .sources-head { align-items: flex-start; flex-direction: column; }
  .source-filter { justify-content: flex-start; }
  .source-item { grid-template-columns: 38px 1fr; gap: 12px; }
  .footer { grid-template-columns: 1fr; }
  .product-dialog { width: 100vw; max-height: 100svh; height: 100svh; }
  .product-dialog[open] { display: block; }
  .dialog-media { min-height: 260px; height: 32vh; }
  .dialog-content { padding: 30px 22px 50px; }
  .dialog-content h2 { font-size: 38px; }
  .dialog-columns { grid-template-columns: 1fr; gap: 24px; }
}