:root {
  --paper:#f7f8f2;
  --ink:#18201f;
  --muted:#58625e;
  --line:#d8ddd2;
  --blue:#1645d9;
  --navy:#111f48;
  --white:#fff;
  --soft:#edf0e7;
  --font:'Helvetica Neue',Helvetica,system-ui,sans-serif;
}

* {
  box-sizing:border-box;
}

html {
  scroll-behavior:smooth;
  scroll-padding-top:30px;
}

body {
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font:18px/1.45 var(--font);
  -webkit-font-smoothing:antialiased;
}

a {
  color:inherit;
  text-underline-offset:4px;
  text-decoration-thickness:1px;
}

a:hover {
  color:var(--blue);
}

button,a,summary {
  -webkit-tap-highlight-color:transparent;
}

a:focus-visible,summary:focus-visible {
  outline:3px solid var(--blue);
  outline-offset:6px;
  border-radius:2px;
}

h1,h2,h3,p,figure {
  margin:0;
}

h1,h2,h3 {
  font-weight:500;
}

h1,h2 {
  text-wrap:balance;
  letter-spacing:-.025em;
}

p {
  max-width:66ch;
}

h2 {
  font-size:clamp(34px,4.4vw,56px);
  line-height:1.08;
}

h3 {
  line-height:1.2;
}

svg {
  display:block;
}

.shell {
  width:min(1296px,calc(100% - 112px));
  margin-inline:auto;
}

.eyebrow {
  display:block;
  font-size:12px;
  line-height:1.4;
  letter-spacing:.095em;
  text-transform:uppercase;
  font-weight:600;
}

.skip {
  position:fixed;
  top:-90px;
  left:20px;
  z-index:100;
  padding:12px 20px;
  background:var(--ink);
  color:white;
}

.skip:focus {
  top:15px;
}

.site-header {
  border-bottom:1px solid var(--line);
}

.header-inner {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  min-height:106px;
}

.wordmark {
  font-weight:650;
  font-size:23px;
  line-height:.99;
  letter-spacing:-.025em;
  text-decoration:none;
  flex-shrink:0;
}

.wordmark>span {
  display:block;
}

.brand-period {
  color:var(--blue);
}

.desktop-nav {
  display:flex;
  gap:29px;
  font-size:14px;
  align-items:center;
}

.desktop-nav a {
  text-decoration:none;
  padding:14px 0;
  border-bottom:1px solid transparent;
}

.desktop-nav a[aria-current=page] {
  color:var(--blue);
  border-bottom-color:var(--blue);
}

.header-link {
  font-size:13px;
  display:flex;
  gap:20px;
  text-decoration:none;
  border-bottom:1px solid var(--ink);
  padding:8px 0;
}

.header-link span {
  font-size:20px;
}

.mobile-menu {
  display:none;
}

.hero {
  display:grid;
  grid-template-columns:1.13fr 1fr;
  gap:60px;
  padding-top:66px;
  padding-bottom:65px;
  align-items:center;
}

.hero-copy>.eyebrow {
  display:flex;
  align-items:center;
  gap:9px;
  margin-bottom:27px;
}

.status-dot {
  display:inline-block;
  width:7px;
  height:7px;
  background:var(--blue);
  border-radius:50%;
  flex:none;
}

.hero h1 {
  font-size:clamp(52px,5.75vw,83px);
  line-height:1;
  letter-spacing:-.04em;
  font-weight:500;
}

.hero-emphasis {
  color:var(--blue);
}

.hero-description {
  font-size:18px;
  line-height:1.45;
  max-width:45ch;
  margin-top:25px;
  color:var(--muted);
}

.hero-actions {
  display:flex;
  align-items:center;
  gap:24px;
  margin-top:30px;
  flex-wrap:wrap;
}

.button {
  display:inline-flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:51px;
  padding:14px 19px;
  background:var(--blue);
  color:var(--white);
  text-decoration:none;
  font-size:14px;
  font-weight:500;
  transition:background .18s,transform .18s;
}

.button:hover {
  background:#0f34a9;
  color:white;
  transform:translateY(-2px);
}

.button span {
  font-size:20px;
  line-height:1;
}

.text-link {
  display:inline-flex;
  gap:24px;
  align-items:center;
  font-size:14px;
  font-weight:500;
  text-decoration:none;
  padding-block:10px;
  border-bottom:1px solid currentColor;
}

.hero-credit {
  font-size:12px;
  color:var(--muted);
  margin-top:24px;
}

.hero-credit a {
  color:var(--ink);
  font-weight:500;
}

.hero-visual {
  align-self:center;
  background:#edf1e9;
  border:1px solid #d7dfd3;
  position:relative;
  background-image:radial-gradient(#cbd5c5 .8px,transparent .8px);
  background-size:16px 16px;
}

.figure-top {
  display:flex;
  justify-content:space-between;
  padding:17px 21px;
  border-bottom:1px solid #d7dfd3;
  font-size:10px;
  letter-spacing:.09em;
  font-weight:500;
  background:#edf1e9;
}

.request-diagram {
  display:flex;
  flex-direction:column;
  align-items:center;
  padding:32px 22px 29px;
}

.diagram-node {
  display:flex;
  align-items:center;
  gap:14px;
  background:var(--paper);
  border:1px solid #cbd3c6;
  padding:17px 20px;
  width:280px;
  max-width:100%;
  box-shadow:0 5px 0 #dde4d8;
}

.node-icon {
  display:grid;
  place-items:center;
  width:36px;
  height:36px;
  background:#e9ede3;
  font-size:25px;
  flex-shrink:0;
}

.diagram-label {
  font-size:9px;
  font-weight:500;
  letter-spacing:.09em;
  line-height:1.5;
  display:block;
  margin-bottom:5px;
}

.diagram-node strong {
  display:block;
  font-size:15px;
  font-weight:550;
  line-height:1.25;
}

.node-detail {
  font-size:10px;
  color:var(--muted);
  display:block;
  margin-top:6px;
}

.connector {
  height:59px;
  display:flex;
  align-items:center;
  justify-content:center;
  position:relative;
  width:100%;
  gap:12px;
}

.connector>span:last-child {
  position:absolute;
  left:calc(50% + 14px);
  max-width:132px;
  font-size:10px;
  line-height:1.3;
  color:#4b605b;
}

.flow-line {
  position:relative;
  height:100%;
  width:1px;
  background:#9aac9d;
}

.flow-line:after {
  content:'';
  position:absolute;
  width:5px;
  height:5px;
  background:var(--blue);
  left:-2px;
  top:0;
  animation:flow 3s linear 1 forwards;
}

.flow-line:before {
  content:'';
  position:absolute;
  bottom:0;
  left:-3px;
  width:7px;
  height:7px;
  border-right:1px solid #758a7b;
  border-bottom:1px solid #758a7b;
  transform:rotate(45deg);
}

.protection-node {
  width:320px;
  max-width:100%;
  padding:18px 21px 0;
  background:var(--blue);
  color:var(--white);
  box-shadow:7px 7px 0 #d0dacb;
  position:relative;
}

.protection-top {
  display:flex;
  justify-content:space-between;
  align-items:center;
}

.protection-top .diagram-label {
  margin:0;
}

.small-dot {
  width:5px;
  height:5px;
  border-radius:50%;
  background:#b7caff;
}

.key-line {
  display:flex;
  gap:25px;
  align-items:center;
  padding-block:21px 26px;
}

.key-line svg {
  width:57px;
  fill:none;
  stroke:#c0d1ff;
  stroke-width:1.5;
}

.key-line strong {
  font-size:28px;
  line-height:1.06;
  font-weight:450;
  letter-spacing:-.02em;
}

.protection-controls {
  border-top:1px solid #5275e5;
  display:flex;
  justify-content:space-between;
  padding:11px 0;
  font-size:10px;
}

.figure-bottom {
  display:flex;
  align-items:center;
  gap:9px;
  padding:16px 21px;
  background:#edf1e9;
  border-top:1px solid #d7dfd3;
}

.figure-bottom p {
  font-size:11px;
}

.figure-bottom .status-dot {
  height:5px;
  width:5px;
}

.principle-strip {
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}

.principle-strip>.shell {
  min-height:85px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}

.strip-label {
  font-size:10px;
  letter-spacing:.09em;
  white-space:nowrap;
}

.principle-strip p {
  display:flex;
  gap:34px;
  font-size:16px;
}

.principle-strip>a,.principle-strip .shell>a {
  text-decoration:none;
  font-size:25px;
  padding:10px;
}

.section {
  padding-top:104px;
  padding-bottom:104px;
}

.definition-section {
  display:grid;
  grid-template-columns:1fr 2fr;
  gap:60px;
}

.section-note>p {
  font-size:14px;
  color:var(--muted);
  margin-top:23px;
}

.definition-content h2 {
  margin-bottom:30px;
}

.large-prose {
  font-size:25px;
  line-height:1.4;
  max-width:51ch;
  letter-spacing:-.01em;
}

.supporting-prose {
  font-size:17px;
  color:var(--muted);
  margin-top:24px;
  max-width:58ch;
}

.definition-content .text-link {
  margin-top:23px;
}

.problem-section {
  background:var(--soft);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}

.section-heading>.eyebrow,.split-heading .eyebrow {
  margin-bottom:22px;
}

.section-heading>p:not(.eyebrow) {
  margin-top:22px;
  max-width:48ch;
  font-size:18px;
  color:var(--muted);
}

.exposure-path {
  display:grid;
  grid-template-columns:repeat(4,1fr);
  margin-top:54px;
}

.exposure-path>div {
  position:relative;
  border-top:1px solid #b7c1b1;
  border-right:1px solid #cfd7c7;
  padding:29px 24px 24px 0;
  margin-right:25px;
}

.exposure-path>div:last-child {
  border-right:0;
  margin-right:0;
  padding-right:0;
}

.exposure-path>div:before {
  content:'';
  position:absolute;
  width:6px;
  height:6px;
  border-radius:50%;
  background:#66725e;
  top:-3px;
  left:0;
}

.exposure-path span {
  font-size:11px;
  color:var(--muted);
}

.exposure-path h3 {
  font-size:21px;
  margin:26px 0 12px;
}

.exposure-path p {
  font-size:15px;
  color:var(--muted);
  max-width:24ch;
}

.problem-foot {
  display:flex;
  justify-content:space-between;
  gap:60px;
  align-items:center;
  margin-top:32px;
  border-top:1px solid var(--line);
  padding-top:26px;
}

.problem-foot p {
  font-size:16px;
  max-width:53ch;
}

.problem-foot .text-link {
  flex-shrink:0;
}

.split-heading {
  display:grid;
  grid-template-columns:1.4fr 1fr;
  gap:80px;
  align-items:end;
}

.split-heading>p {
  font-size:17px!important;
  max-width:39ch!important;
}

.principles-list {
  margin-top:54px;
}

.principle-row {
  display:grid;
  grid-template-columns:50px 185px 1fr 30px;
  gap:28px;
  padding:29px 0;
  border-top:1px solid var(--line);
  text-decoration:none;
  align-items:baseline;
  transition:background .2s;
}

.principle-row:last-child {
  border-bottom:1px solid var(--line);
}

.principle-number {
  font-size:12px;
  color:var(--muted);
}

.principle-row h3 {
  font-size:29px;
  font-weight:450;
  letter-spacing:-.02em;
}

.principle-row strong {
  font-size:17px;
  font-weight:500;
  line-height:1.3;
}

.principle-row p {
  font-size:15px;
  color:var(--muted);
  max-width:63ch;
  margin-top:9px;
}

.row-arrow {
  font-size:24px;
}

.section-end {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:25px;
  margin-top:27px;
}

.section-end>p {
  font-size:12px;
  color:var(--muted);
}

.pioneer-section {
  background:var(--navy);
  color:#f7f8f2;
}

.pioneer-inner {
  display:grid;
  grid-template-columns:1fr 1.5fr;
  gap:70px;
  padding-block:90px;
}

.pioneer-label .eyebrow {
  color:#adbfe7;
}

.pioneer-wordmark {
  display:block;
  font:500 46px/1.2 'Iowan Old Style',Georgia,serif;
  margin-top:37px;
  letter-spacing:-.03em;
}

.pioneer-wordmark>span {
  font:30px var(--font);
  margin-left:16px;
  color:#a9bffb;
}

.pioneer-copy h2 {
  font-size:48px;
}

.pioneer-copy>p {
  font-size:18px;
  color:#c3cee6;
  margin-top:25px;
  max-width:48ch;
}

.button-light {
  background:var(--paper);
  color:var(--navy);
  margin-top:30px;
}

.button-light:hover {
  background:#dce4f5;
  color:var(--navy);
}

.pioneer-copy .pioneer-note {
  font-size:12px;
  color:#adbad5;
  max-width:61ch;
  margin-top:24px;
}

.reading-grid {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  margin-top:39px;
  gap:25px;
}

.reading-grid>a {
  display:flex;
  flex-direction:column;
  min-height:280px;
  border-top:1px solid var(--ink);
  border-bottom:1px solid var(--line);
  padding:22px 0 19px;
  text-decoration:none;
}

.reading-grid h3 {
  font-size:28px;
  font-weight:450;
  letter-spacing:-.02em;
  margin-top:28px;
  margin-bottom:40px;
}

.reading-bottom {
  font-size:13px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-top:auto;
}

.reading-bottom>span {
  font-size:23px;
}

.site-footer {
  border-top:1px solid var(--line);
  padding-top:45px;
  padding-bottom:25px;
}

.footer-top {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  padding-bottom:40px;
}

.footer-top>p {
  font-size:17px;
  color:var(--muted);
  margin-right:auto;
  margin-left:50px;
}

.footer-pioneer {
  font-size:14px;
  text-decoration:none;
}

.footer-pioneer>span {
  margin-left:20px;
}

.footer-bottom {
  border-top:1px solid var(--line);
  padding-top:20px;
  display:flex;
  justify-content:space-between;
  gap:25px;
  font-size:11px;
  color:var(--muted);
}

.footer-bottom nav {
  display:flex;
  gap:24px;
}

.footer-bottom a {
  text-decoration:none;
}

.footer-disclosure {
  font-size:10px;
  color:var(--muted);
  margin-top:17px;
  max-width:100%;
}

.article-top {
  padding-top:30px;
  padding-bottom:54px;
}

.back-link {
  font-size:12px;
  color:var(--muted);
  text-decoration:none;
}

.article-heading {
  margin-left:calc(25% + 25px);
  padding-top:44px;
}

.article-heading .eyebrow {
  margin-bottom:22px;
  color:var(--muted);
}

.article-heading h1 {
  font-size:clamp(40px,5vw,70px);
  line-height:1.04;
  max-width:18ch;
  font-weight:450;
  letter-spacing:-.035em;
}

.article-intro {
  font-size:21px;
  color:var(--muted);
  line-height:1.4;
  margin-top:26px;
  max-width:49ch;
}

.article-layout {
  display:grid;
  grid-template-columns:1fr 3fr;
  gap:34px;
  padding-bottom:100px;
}

.article-aside {
  align-self:start;
  position:sticky;
  top:30px;
  padding-top:27px;
  border-top:1px solid var(--line);
  font-size:14px;
}

.article-aside nav {
  display:flex;
  flex-direction:column;
  gap:5px;
  margin-top:22px;
}

.article-aside nav a {
  text-decoration:none;
  padding:8px 0;
  display:flex;
  gap:15px;
}

.article-aside nav a>span {
  font-size:10px;
  color:var(--muted);
  padding-top:4px;
}

.article-aside [aria-current=page] {
  color:var(--blue);
}

.aside-note {
  margin-top:32px;
  font-size:11px;
  line-height:1.5;
  color:var(--muted);
}

.prose {
  max-width:850px;
  min-width:0;
  border-top:1px solid var(--line);
  padding-top:38px;
}

.prose p {
  max-width:64ch;
}

.prose>section {
  margin-bottom:54px;
}

.prose h2 {
  font-size:34px;
  line-height:1.15;
  margin-bottom:21px;
}

.prose h3 {
  font-size:23px;
  line-height:1.2;
  margin-top:28px;
  margin-bottom:12px;
}

.prose p+p {
  margin-top:20px;
}

.prose p {
  font-size:18px;
  line-height:1.45;
}

.prose ul,.prose ol {
  padding-left:24px;
  margin-block:20px;
}

.prose li {
  padding-left:5px;
  margin-bottom:12px;
  font-size:17px;
  max-width:64ch;
}

.prose a {
  color:var(--blue);
}

.prose strong {
  font-weight:600;
}

.prose .callout {
  border-left:3px solid var(--blue);
  padding:23px 26px;
  background:var(--soft);
  margin:28px 0;
}

.prose .callout p {
  font-size:17px;
}

.prose .callout>strong,.prose .callout>.eyebrow {
  display:block;
  margin-bottom:10px;
}

.prose .definition-box {
  background:var(--navy);
  color:white;
  padding:34px;
  margin-bottom:42px;
}

.prose .definition-box p {
  font-size:23px;
  line-height:1.4;
}

.prose .definition-box .eyebrow {
  font-size:11px;
  color:#b9c9ed;
  margin-bottom:20px;
}

.prose .fact-grid {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
  margin:26px 0;
}

.fact-grid>div {
  border-top:1px solid var(--line);
  padding-top:19px;
}

.fact-grid h3 {
  margin-top:0;
}

.fact-grid p {
  font-size:16px;
}

.prose .flow-inline {
  display:flex;
  align-items:center;
  gap:15px;
  padding:26px;
  background:var(--soft);
  margin-block:25px;
}

.flow-inline>span:not(.flow-arrow) {
  font-size:15px;
  font-weight:500;
  flex:1;
  text-align:center;
}

.flow-inline small {
  display:block;
  font-size:12px;
  font-weight:400;
  line-height:1.4;
  margin-top:8px;
  color:var(--muted);
}

.flow-arrow {
  font-size:20px;
  color:var(--blue);
}

.prose details {
  border-top:1px solid var(--line);
  padding:0;
}

.prose details:last-of-type {
  border-bottom:1px solid var(--line);
}

.prose summary {
  font-size:18px;
  font-weight:500;
  cursor:pointer;
  list-style:none;
  padding:22px 35px 22px 0;
  position:relative;
}

.prose summary::-webkit-details-marker {
  display:none;
}

.prose summary:after {
  content:'+';
  position:absolute;
  right:5px;
  top:19px;
  font-size:25px;
  font-weight:400;
}

.prose details[open]>summary:after {
  content:'−';
}

.prose details p {
  font-size:17px;
  color:var(--muted);
  padding-bottom:25px;
}

.prose .source-list {
  list-style:none;
  padding-left:0;
}

.source-list li {
  border-top:1px solid var(--line);
  padding:15px 0;
  font-size:15px;
}

.source-list small {
  display:block;
  color:var(--muted);
  font-size:13px;
  margin-top:7px;
}

.prose .next-reading {
  padding-top:24px;
  border-top:1px solid var(--ink);
  margin-top:45px;
  display:flex;
  justify-content:space-between;
  gap:30px;
  align-items:center;
}

.next-reading>span {
  font-size:12px;
  color:var(--muted);
}

.next-reading a {
  font-size:17px;
  text-decoration:none;
}

.principle-article {
  padding-top:7px;
  scroll-margin-top:30px;
}

.principle-article>.eyebrow {
  color:var(--muted);
  margin-bottom:15px;
}

.prose .comparison-item {
  padding-block:25px;
  border-top:1px solid var(--line);
}

.comparison-item h3 {
  margin-top:0;
}

.comparison-item .eyebrow {
  margin-bottom:12px;
  color:var(--muted);
}

.comparison-item p {
  font-size:17px;
}

.comparison-item p+p {
  margin-top:12px;
}

.prose .small-note {
  font-size:14px;
  color:var(--muted);
  margin-block:20px;
}

.prose .button {
  color:white;
}

.prose .button:hover {
  color:white;
}

@keyframes flow {
  0% {
    top:0;
    opacity:0;
  }
  12% {
    opacity:1;
  }
  85% {
    opacity:1;
  }
  100% {
    top:95%;
    opacity:0;
  }
}

@media(min-width:1600px) {
  .hero {
    gap:100px;
  }
  .hero h1 {
    font-size:88px;
  }
}

@media(max-width:1150px) {
  .shell {
    width:calc(100% - 64px);
  }
  .header-inner {
    gap:25px;
  }
  .desktop-nav {
    gap:21px;
  }
  .header-link {
    display:none;
  }
  .hero {
    gap:35px;
    padding-top:50px;
  }
  .hero h1 {
    font-size:64px;
  }
  .hero-actions {
    gap:15px;
  }
  .hero-description {
    font-size:17px;
  }
  .protection-node {
    width:300px;
  }
  .hero-visual .connector>span:last-child {
    font-size:9px;
    max-width:110px;
  }
  .principle-strip p {
    gap:23px;
    font-size:14px;
  }
  .split-heading {
    gap:40px;
  }
  .principle-row {
    grid-template-columns:32px 150px 1fr 25px;
    gap:22px;
  }
  .pioneer-copy h2 {
    font-size:41px;
  }
  .footer-top>p {
    margin-left:10px;
  }
  .footer-bottom {
    flex-wrap:wrap;
  }
  .article-heading {
    margin-left:calc(25% + 25px);
  }
}

@media(max-width:850px) {
  .shell {
    width:calc(100% - 48px);
  }
  .header-inner {
    min-height:90px;
  }
  .hero {
    gap:24px;
    grid-template-columns:1.1fr 1fr;
    padding-block:43px;
  }
  .hero h1 {
    font-size:52px;
  }
  .hero-copy>.eyebrow {
    font-size:10px;
    letter-spacing:.06em;
  }
  .request-diagram {
    padding:23px 14px;
  }
  .diagram-node {
    padding:13px 14px;
    width:240px;
    gap:10px;
  }
  .node-icon {
    width:28px;
    font-size:22px;
  }
  .diagram-node strong {
    font-size:13px;
  }
  .node-detail {
    font-size:9px;
  }
  .protection-node {
    padding:16px 17px 0;
  }
  .key-line {
    gap:14px;
  }
  .key-line strong {
    font-size:25px;
  }
  .key-line svg {
    width:42px;
  }
  .connector {
    height:52px;
  }
  .hero-visual .connector>span:last-child {
    font-size:8px;
    max-width:93px;
  }
  .figure-top {
    padding:15px 14px;
    font-size:8px;
  }
  .figure-bottom {
    padding:14px;
    font-size:10px;
  }
  .figure-bottom p {
    font-size:10px;
  }
  .hero-actions .text-link {
    font-size:13px;
  }
  .button {
    font-size:13px;
    gap:15px;
  }
  .principle-strip p {
    gap:14px;
  }
  .strip-label {
    font-size:9px;
  }
  .principle-strip>.shell {
    gap:15px;
    min-height:72px;
  }
  .section {
    padding-block:75px;
  }
  .definition-section {
    grid-template-columns:1fr 2.4fr;
    gap:30px;
  }
  .large-prose {
    font-size:22px;
  }
  .exposure-path {
    grid-template-columns:1fr 1fr;
    row-gap:25px;
  }
  .exposure-path>div:nth-child(2) {
    border-right:0;
    margin-right:0;
  }
  .exposure-path>div p {
    max-width:32ch;
  }
  .problem-foot {
    display:block;
  }
  .problem-foot .text-link {
    margin-top:20px;
  }
  .split-heading {
    gap:25px;
  }
  .split-heading h2 {
    font-size:38px;
  }
  .split-heading>p {
    font-size:16px!important;
  }
  .principle-row {
    grid-template-columns:25px 125px 1fr 20px;
    gap:16px;
  }
  .principle-row h3 {
    font-size:25px;
  }
  .principle-row strong {
    font-size:16px;
  }
  .principle-row p {
    font-size:14px;
  }
  .pioneer-inner {
    gap:35px;
    padding-block:65px;
    grid-template-columns:1fr 1.6fr;
  }
  .pioneer-wordmark {
    font-size:33px;
  }
  .pioneer-wordmark>span {
    font-size:25px;
    margin-left:8px;
  }
  .pioneer-copy h2 {
    font-size:36px;
  }
  .pioneer-copy>p {
    font-size:16px;
  }
  .reading-grid {
    gap:20px;
  }
  .reading-grid h3 {
    font-size:23px;
  }
  .reading-grid .eyebrow {
    font-size:10px;
  }
  .reading-bottom {
    font-size:11px;
  }
  .footer-top>p {
    font-size:14px;
    margin-left:0;
  }
  .footer-pioneer {
    font-size:12px;
  }
  .article-heading {
    margin-left:calc(22% + 26px);
  }
  .article-layout {
    grid-template-columns:1fr 3.5fr;
    gap:25px;
  }
  .article-heading h1 {
    font-size:50px;
  }
  .article-intro {
    font-size:19px;
  }
  .prose p {
    font-size:17px;
  }
  .article-aside {
    font-size:12px;
  }
  .article-aside .eyebrow {
    font-size:10px;
  }
  .article-aside nav a {
    gap:9px;
  }
  .prose .fact-grid {
    gap:18px;
  }
  .prose .definition-box {
    padding:27px;
  }
  .prose .definition-box p {
    font-size:20px;
  }
}

@media(max-width:650px) {
  .shell {
    width:calc(100% - 40px);
  }
  .header-inner {
    min-height:83px;
  }
  .wordmark {
    font-size:22px;
  }
  .desktop-nav {
    display:none;
  }
  .mobile-menu {
    display:block;
  }
  .mobile-menu summary {
    font-size:13px;
    cursor:pointer;
    list-style:none;
    display:flex;
    align-items:center;
    gap:20px;
    min-height:44px;
    padding-inline:6px;
  }
  .mobile-menu summary::-webkit-details-marker {
    display:none;
  }
  .mobile-menu summary>span {
    font-size:24px;
  }
  .mobile-menu[open] summary>span {
    transform:rotate(45deg);
  }
  .mobile-menu nav {
    position:absolute;
    left:0;
    right:0;
    top:83px;
    z-index:10;
    background:var(--paper);
    border-bottom:1px solid var(--line);
    box-shadow:0 12px 18px #19200f12;
    padding:14px 26px 23px;
    display:flex;
    flex-direction:column;
  }
  .mobile-menu nav a {
    padding:13px 0;
    border-bottom:1px solid var(--line);
    text-decoration:none;
    font-size:17px;
  }
  .hero {
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:37px;
    padding-top:37px;
    padding-bottom:38px;
  }
  .hero-copy>.eyebrow {
    font-size:9px;
    margin-bottom:25px;
  }
  .hero h1 {
    font-size:clamp(49px,10.5vw,67px);
    line-height:1.01;
    letter-spacing:-.035em;
  }
  .hero-description {
    font-size:17px;
    max-width:38ch;
    margin-top:23px;
  }
  .hero-actions {
    gap:19px;
    margin-top:25px;
  }
  .hero-actions .button {
    font-size:13px;
    min-height:51px;
  }
  .hero-credit {
    margin-top:19px;
    font-size:11px;
  }
  .hero-visual {
    align-self:stretch;
  }
  .figure-top {
    font-size:9px;
    padding:15px 18px;
  }
  .request-diagram {
    padding:26px 17px;
  }
  .diagram-node {
    width:265px;
    padding:15px 17px;
  }
  .diagram-node strong {
    font-size:15px;
  }
  .node-detail {
    font-size:10px;
  }
  .node-icon {
    width:32px;
    height:34px;
  }
  .protection-node {
    width:300px;
    padding:18px 20px 0;
  }
  .key-line {
    gap:24px;
    padding-block:22px 26px;
  }
  .key-line strong {
    font-size:29px;
  }
  .key-line svg {
    width:51px;
  }
  .connector {
    height:55px;
  }
  .hero-visual .connector>span:last-child {
    font-size:9px;
    max-width:120px;
  }
  .figure-bottom {
    padding:15px 18px;
  }
  .figure-bottom p {
    font-size:11px;
  }
  .principle-strip>.shell {
    padding-block:19px;
    gap:14px;
    align-items:flex-start;
  }
  .principle-strip p {
    display:block;
    font-size:13px;
    max-width:22ch;
  }
  .principle-strip p span {
    display:block;
  }
  .strip-label {
    font-size:9px;
    padding-top:2px;
  }
  .principle-strip .shell>a {
    padding:0 0 0 4px;
    font-size:22px;
  }
  .section {
    padding-block:58px;
  }
  h2 {
    font-size:36px;
  }
  .definition-section {
    display:block;
  }
  .section-note {
    display:flex;
    justify-content:space-between;
    margin-bottom:34px;
    gap:30px;
  }
  .section-note>p {
    display:none;
  }
  .eyebrow {
    font-size:10px;
  }
  .definition-content h2 {
    margin-bottom:23px;
  }
  .large-prose {
    font-size:22px;
    line-height:1.38;
  }
  .supporting-prose {
    font-size:16px;
  }
  .section-heading>p:not(.eyebrow) {
    font-size:16px;
  }
  .exposure-path {
    gap:25px 20px;
    margin-top:37px;
  }
  .exposure-path>div {
    margin:0;
    padding:24px 10px 15px 0;
  }
  .exposure-path>div:nth-child(even) {
    padding-right:0;
  }
  .exposure-path h3 {
    font-size:19px;
    margin-top:19px;
  }
  .exposure-path p {
    font-size:14px;
  }
  .problem-foot {
    margin-top:15px;
  }
  .problem-foot p {
    font-size:15px;
  }
  .problem-foot .text-link {
    font-size:12px;
    gap:16px;
  }
  .split-heading {
    display:block;
  }
  .split-heading h2 {
    font-size:36px;
  }
  .split-heading>p {
    margin-top:23px!important;
  }
  .principles-list {
    margin-top:33px;
  }
  .principle-row {
    grid-template-columns:24px 1fr 20px;
    gap:13px;
    padding-block:24px;
  }
  .principle-row h3 {
    font-size:26px;
  }
  .principle-row>div {
    grid-column:2/4;
    grid-row:2;
  }
  .principle-row>.row-arrow {
    grid-row:1;
    grid-column:3;
  }
  .principle-row strong {
    font-size:16px;
  }
  .principle-row p {
    font-size:14px;
  }
  .section-end {
    display:block;
    margin-top:23px;
  }
  .section-end>.text-link {
    margin-top:12px;
    font-size:13px;
  }
  .pioneer-inner {
    display:block;
    padding-block:52px;
  }
  .pioneer-wordmark {
    font-size:37px;
    margin-top:24px;
    margin-bottom:40px;
  }
  .pioneer-copy h2 {
    font-size:36px;
  }
  .pioneer-copy>p {
    font-size:17px;
  }
  .pioneer-copy .pioneer-note {
    font-size:11px;
  }
  .reading-grid {
    display:block;
    margin-top:29px;
  }
  .reading-grid>a {
    min-height:0;
    padding-block:21px 18px;
    margin-bottom:30px;
  }
  .reading-grid h3 {
    font-size:27px;
    margin-block:20px 28px;
  }
  .reading-grid h3 br {
    display:none;
  }
  .reading-grid .eyebrow {
    font-size:10px;
  }
  .reading-bottom {
    font-size:13px;
  }
  .reading-section {
    padding-bottom:24px;
  }
  .footer-top {
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:26px;
    padding-bottom:30px;
  }
  .footer-top>p {
    font-size:13px;
    margin-left:0;
  }
  .footer-pioneer {
    grid-column:1/-1;
  }
  .footer-bottom {
    display:block;
    font-size:11px;
  }
  .footer-bottom nav {
    display:flex;
    flex-wrap:wrap;
    gap:14px 20px;
    margin-block:20px;
  }
  .footer-disclosure {
    font-size:10px;
  }
  .article-top {
    padding-top:22px;
    padding-bottom:35px;
  }
  .article-heading {
    margin-left:0;
    padding-top:32px;
  }
  .article-heading .eyebrow {
    font-size:10px;
    margin-bottom:19px;
  }
  .article-heading h1 {
    font-size:45px;
    line-height:1.05;
  }
  .article-intro {
    font-size:19px;
    line-height:1.4;
    margin-top:23px;
  }
  .article-layout {
    display:block;
    padding-bottom:55px;
  }
  .article-aside {
    display:none;
  }
  .prose {
    padding-top:28px;
  }
  .prose h2 {
    font-size:30px;
  }
  .prose h3 {
    font-size:22px;
  }
  .prose p {
    font-size:17px;
  }
  .prose>section {
    margin-bottom:39px;
  }
  .prose .definition-box {
    padding:24px;
    margin-bottom:35px;
  }
  .prose .definition-box p {
    font-size:20px;
  }
  .prose .fact-grid {
    display:block;
  }
  .fact-grid>div {
    margin-top:25px;
  }
  .prose .callout {
    padding:20px;
  }
  .prose .callout p {
    font-size:16px;
  }
  .prose .flow-inline {
    flex-direction:column;
    padding:25px;
  }
  .flow-inline .flow-arrow {
    transform:rotate(90deg);
  }
  .flow-inline>span:not(.flow-arrow) {
    font-size:16px;
  }
  .prose summary {
    font-size:17px;
  }
  .prose .next-reading {
    display:block;
  }
  .next-reading>span {
    display:block;
    margin-bottom:12px;
  }
  .prose li {
    font-size:16px;
  }
}

@media(max-width:360px) {
  .shell {
    width:calc(100% - 32px);
  }
  .hero h1 {
    font-size:47px;
  }
  .hero-actions {
    gap:9px;
  }
  .hero-actions .button {
    width:100%;
  }
  .hero-copy>.eyebrow {
    font-size:8px;
  }
  .hero-visual .connector>span:last-child {
    max-width:105px;
    font-size:8px;
  }
  .protection-node {
    padding-inline:17px;
  }
  .key-line {
    gap:15px;
  }
  .key-line strong {
    font-size:26px;
  }
  .figure-top {
    font-size:8px;
  }
  .figure-bottom p {
    font-size:10px;
  }
  .principle-strip>.shell {
    gap:10px;
  }
  .principle-strip p {
    font-size:12px;
  }
  .strip-label {
    font-size:8px;
  }
  .article-heading h1 {
    font-size:40px;
  }
  .prose .definition-box {
    padding:20px;
  }
  .hero-visual .diagram-node {
    padding-inline:13px;
  }
  .node-detail {
    font-size:9px;
  }
}

@media(prefers-reduced-motion:reduce) {
  html {
    scroll-behavior:auto;
  }
  *,*:before,*:after {
    animation:none!important;
    transition:none!important;
  }
  .flow-line:after {
    top:50%;
    opacity:1;
  }
}

@media print {
  .site-header,.site-footer,.article-aside,.hero-visual,.skip,.hero-actions,.back-link {
    display:none;
  }
  .shell {
    width:100%;
  }
  .article-heading {
    margin-left:0;
  }
  .article-layout {
    display:block;
  }
  .article-top,.section {
    padding-block:20px;
  }
  body {
    background:white;
    color:black;
    font-size:12pt;
  }
  .prose {
    max-width:none;
  }
  .prose a {
    color:inherit;
  }
  .hero {
    display:block;
  }
  .hero h1 {
    font-size:40pt;
  }
  .pioneer-section,.prose .definition-box {
    background:white;
    color:black;
  }
  .pioneer-copy>p,.prose .definition-box .eyebrow {
    color:black;
  }
}