/* One-page visual pilot. No selectors apply to other articles. */
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/* Readability revision: stronger system font, comfortable measure, selective emphasis. */
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.router-edition .article-body{padding-inline:52px}
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@media(max-width:1100px){.router-edition .article-body{padding-inline:30px}}
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@media(max-width:420px){.router-edition .article-body{padding-inline:18px}.router-edition .router-hero h1{font-size:31px;letter-spacing:-.02em}.router-edition .router-hero h1 span{font-size:20px;letter-spacing:0}.router-edition .prose h2{font-size:22px}.router-edition .prose p{font-size:17px}}

/* A subject-specific editorial edition: junctions, routes and reading landmarks. */
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.router-edition .answer-box{display:grid;grid-template-columns:.85fr 1.5fr;gap:26px;padding:28px 30px;background:#f0f5f9;border-left:0;border-top:3px solid #387ba5}.router-edition .answer-box h2{font-size:24px;line-height:1.65;margin:12px 0 0;color:#173b58}.router-edition .answer-box p{font-size:16px;line-height:1.9;margin:0;font-weight:400}
.router-edition .article-body{border-radius:3px;border-color:#dce5ee}.router-edition .article-outline{border-radius:3px;background:#fbfcfd}.router-edition .article-outline summary{padding:18px 20px}
.router-edition .figure-expand{border-radius:3px;padding-bottom:12px;background:#f8fafc;box-shadow:0 5px 0 #e5edf4}.router-edition .figure{position:relative}.router-edition .figure-legend{border-radius:3px;border-left:2px solid #6c97b4;background:#f2f6fa}
.router-edition .router-journey{border-radius:3px;padding:32px;background:#17344d;position:relative;overflow:hidden}
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.router-journey-controls{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;margin-bottom:20px}.router-journey-controls[hidden],.router-journey-status[hidden]{display:none}
.router-journey-controls button{background:#24465f;color:#e2edf4;border:1px solid #607f953b;padding:12px 8px;text-align:left;font-size:12px;line-height:1.5;cursor:pointer;transition:background .2s,border-color .2s}.router-journey-controls button span{display:block;color:#b7ccd9;font-size:10px;margin-bottom:4px}.router-journey-controls button[aria-pressed=true]{background:#e5b975;color:#16374d;border-color:#e5b975;font-weight:700}.router-journey-controls button[aria-pressed=true] span{color:#4e3e29}.router-journey-controls button:hover{border-color:#e5b975}.router-journey-controls button:focus-visible,.router-journey-status button:focus-visible{outline:3px solid #f3d69e;outline-offset:3px}
.router-flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));position:relative;gap:12px;background:#10283d;border:1px solid #91b2c329;padding:26px 12px 50px}.router-flow:before{content:"";position:absolute;left:12.5%;right:12.5%;bottom:26px;height:2px;background:#6c8a9e}.router-flow-node{display:flex;align-items:center;flex-direction:column;min-width:0;color:#eef5fa;z-index:1}.router-flow-node>span:not(.router-device){font-size:12px;font-weight:700;margin-top:13px}.router-flow-node small{font-size:10px;color:#b8ccd9;text-align:center;margin-top:7px;line-height:1.5}.router-flow-arrow{position:absolute;top:50px;color:#7c9eb6;font-size:19px}.router-flow-arrow:nth-of-type(1){left:25%}.router-flow-arrow:nth-of-type(2){left:50%}.router-flow-arrow:nth-of-type(3){left:75%}
.router-device{position:relative;display:flex;width:48px;height:35px;flex-shrink:0}.router-device.terminal{border:2px solid #8cb2cb;border-radius:3px;height:29px;margin-top:3px}.router-device.terminal:after{content:"";position:absolute;width:54px;height:3px;bottom:-7px;left:-5px;background:#8cb2cb}.router-device.terminal i{position:absolute;width:21px;height:2px;background:#436a86;left:11px;top:12px}
.router-device.gateway{background:#345b76;border:2px solid #8cb2cb;border-radius:4px;align-items:center;justify-content:center;gap:4px;box-shadow:0 6px 0 #183b56}.router-device.gateway i{width:7px;height:9px;border:1px solid #aec9db;background:#17354b}.router-device.server{border:2px solid #8cb2cb;width:27px;height:36px;flex-direction:column;justify-content:center;gap:4px;padding:4px}.router-device.server i{height:7px;border:1px solid #8cb2cb;background:#345b76}
.router-packet{position:absolute;left:12.5%;bottom:21px;width:12px;height:12px;border:2px solid #f4d397;background:#e5b975;transform:translateX(-50%);transition:left .45s ease,top .45s ease;box-shadow:0 0 0 4px #e5b97515}.router-flow[data-stage="1"] .router-packet{left:37.5%}.router-flow[data-stage="2"] .router-packet{left:62.5%}.router-flow[data-stage="3"] .router-packet{left:87.5%}
.router-journey-status{display:grid;grid-template-columns:auto 1fr;gap:10px 14px;padding:18px 20px;background:#e9f0f5;color:#1d3f58;margin-top:12px;border-left:3px solid #e5b975}.router-journey-status>span{font-size:12px;line-height:1.8;color:#8a5b1d;font-weight:700}.router-journey-status p{font-size:14px;line-height:1.85;margin:0}.router-journey-status button{grid-column:2;justify-self:end;font-size:12px;font-weight:700;cursor:pointer;background:none;border:0;border-bottom:1px solid #7a9cae;padding:6px 0;color:#1b547a}
.router-edition .router-journey .steps{margin-top:26px;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 25px}.router-edition .router-journey .steps li{padding:21px 0;gap:12px;transition:opacity .2s}.router-edition .router-journey .steps h3{font-size:16px}.router-edition .router-journey .steps p{font-size:14px}.router-edition .router-journey .steps li.is-current .step-number{color:#f9d79c;text-decoration:underline;text-underline-offset:5px}.router-journey-footnote{font-size:11px;line-height:1.8;color:#b8cdda;border-top:1px solid #ffffff25;padding-top:17px;margin:8px 0 0}
.router-edition .router-chapter{padding-top:0;margin-top:46px;padding-bottom:35px}.router-edition .router-chapter-number{display:flex;align-items:center;gap:10px;font-size:14px;margin-bottom:18px}.router-chapter-number:after{content:"";height:1px;width:42px;background:#c7a674}.router-edition .prose h2:before{display:none}.router-edition .prose h2{border-left:3px solid #d2a159;padding-left:18px;line-height:1.55;margin-bottom:26px}.router-edition .router-chapter p:first-of-type{font-weight:500}
.router-takeaway{border-top:1px solid #c9dbe8;border-bottom:1px solid #c9dbe8;padding:20px 24px;background:#f4f8fb;margin:27px 0 0;position:relative}.router-takeaway:before{content:"";position:absolute;top:-1px;left:0;width:42px;height:3px;background:#c99343}.router-takeaway>span{color:#225675;font-weight:700;font-size:15px;display:block;margin-bottom:9px}.router-edition .prose .router-takeaway p{font-size:15px;line-height:1.85;margin:0;font-weight:400}
.router-sidebar-title{font-size:16px;color:#214964;font-weight:700;line-height:1.7;margin:12px 0 0}.router-edition .sticky-sidebar nav a[aria-current="location"]{background:#e5eef5;border-left:3px solid #2c719e;margin-left:-13px;padding-left:10px;color:#173e5a;font-weight:700}.router-edition .sticky-sidebar nav a{transition:background .2s,color .2s}.router-edition .sidebar-note{border-top:2px solid #c99343;border-radius:0;background:#edf3f7}
.router-edition .faq-section{padding-top:10px}.router-edition .faq-section details{border-radius:3px;border-left:3px solid #c9dce9}.router-edition .faq-section details[open]{border-left-color:#28668e}.router-edition .faq-section summary{padding-left:22px;padding-right:48px}.router-edition .faq-section summary:after{right:18px}.router-edition .explain-box{padding:28px;background:#edf4f8}.router-edition .sources-section{padding-top:26px;border-top:3px double #c7d6e1}
@media(max-width:1100px){.router-contrast h2{font-size:22px}.router-contrast-role{padding-inline:20px}.router-edition .answer-box{display:block}.router-edition .answer-box p{margin-top:16px}.router-journey-badge{display:none}.router-edition .router-journey{padding:26px}.router-edition .router-journey .steps{grid-template-columns:1fr}}
@media(max-width:800px){.router-edition .router-hero-copy{border-left:0;padding-left:0}.router-edition .router-cover img{border-radius:3px 22px 3px 3px;box-shadow:8px 8px 0 #e7eef5}.router-edition .router-read-lenses{margin-top:18px}.router-contrast{grid-template-columns:1fr 1fr;padding-top:27px!important;gap:22px 0;margin-bottom:20px;padding-bottom:28px!important}.router-contrast-heading{grid-column:1/-1;padding:0}.router-contrast h2{font-size:24px;margin-top:12px}.router-contrast h2 br{display:none}.router-contrast-role{padding:0 18px}.router-contrast-role:nth-child(2){border-left:0;padding-left:0}.router-contrast-role:last-child{padding-right:0}.router-contrast-role h3{font-size:18px}.router-contrast-role p{font-size:13px}.router-contrast-role a{font-size:11px;line-height:1.7}.router-role-label{font-size:10px}.router-edition .router-journey{padding:23px 18px}.router-edition .router-journey-heading h2{font-size:22px}.router-journey-controls{grid-template-columns:1fr 1fr}.router-journey-controls button{font-size:12px;padding:12px}.router-flow{grid-template-columns:1fr;gap:22px;padding:22px 15px 22px 26px}.router-flow-node{display:grid;grid-template-columns:60px 1fr;grid-template-rows:auto auto;text-align:left;min-height:54px;align-items:center;column-gap:17px}.router-flow-node .router-device{grid-column:1;grid-row:1/3;justify-self:center}.router-flow-node>span:not(.router-device){font-size:14px;margin:0}.router-flow-node small{font-size:12px;text-align:left;margin-top:4px}.router-flow:before{left:55px;right:auto;top:46px;bottom:46px;width:2px;height:auto}.router-flow-arrow{display:none}.router-flow .router-packet{left:56px;top:44px;bottom:auto;z-index:3}.router-flow[data-stage="1"] .router-packet{left:56px;top:120px}.router-flow[data-stage="2"] .router-packet{left:56px;top:196px}.router-flow[data-stage="3"] .router-packet{left:56px;top:272px}.router-journey-status{grid-template-columns:1fr;padding:17px 16px;gap:9px}.router-journey-status p{font-size:14px}.router-journey-status button{grid-column:1}.router-edition .router-journey .steps{gap:0}.router-edition .router-journey .steps li{gap:12px}.router-edition .prose h2{padding-left:13px;font-size:22px}.router-takeaway{padding:18px}.router-takeaway>span{font-size:14px}.router-edition .prose .router-takeaway p{font-size:15px}.router-edition .answer-box{padding:23px 20px}.router-edition .answer-box h2{font-size:23px}.router-edition .answer-box p{font-size:16px}.router-edition .router-chapter{margin-top:34px}}
@media(prefers-reduced-motion:reduce){.router-edition .router-packet{transition:none}}

.router-edition .prose caption{text-align:left;font-size:14px;font-weight:700;color:#244d6b;padding:17px 20px;background:#eaf2f8;border-bottom:1px solid #cadce9}

.router-edition .router-journey .steps p{font-size:15px;line-height:1.85}.router-edition .router-journey .steps h3{font-size:17px}.router-journey-status p{font-size:15px}.router-journey-intro{font-size:15px}