/* Website Counter Guide – editorial styles. No external fonts or frameworks. */
:root {
  --paper: #faf8f3;
  --paper-2: #f3f0e8;
  --card: #fffdf9;
  --ink: #1f2a37;
  --ink-2: #3d4856;
  --muted: #66707c;
  --rule: #e2ddd1;
  --rule-strong: #cfc8b8;
  --blue: #2a5bc4;
  --blue-dark: #1d448f;
  --blue-soft: #e8eefb;
  --amber: #8a5a00;
  --amber-soft: #fbf1dc;
  --green: #22693f;
  --green-soft: #e3f2e8;

  --serif: "Iowan Old Style", "Charter", "Bitstream Charter", "Sitka Text", Cambria, Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --wrap: 1120px;
  --radius: 10px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 5rem; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.0625rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; color: var(--ink); }
h1, h2 { font-family: var(--serif); font-weight: 700; letter-spacing: -.015em; }
h3 { font-family: var(--sans); font-size: 1.05rem; font-weight: 650; letter-spacing: -.005em; }
p { margin: 0 0 1em; }
a { color: var(--blue); text-underline-offset: .18em; text-decoration-thickness: 1px; }
a:hover { color: var(--blue-dark); text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; border-radius: 3px; }
code {
  font-family: var(--mono);
  font-size: .86em;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: .05em .35em;
  overflow-wrap: anywhere;
}

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 1.25rem; }
.wrap.narrow { max-width: 820px; }
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 1rem; top: -3rem; z-index: 100;
  background: var(--ink); color: #fff; padding: .5rem 1rem; border-radius: 6px;
  font-family: var(--sans); text-decoration: none;
}
.skip-link:focus { top: 1rem; color: #fff; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 248, 243, .92);
  backdrop-filter: saturate(1.2) blur(8px);
  -webkit-backdrop-filter: saturate(1.2) blur(8px);
  border-bottom: 1px solid var(--rule);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 4rem; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: .65rem; text-decoration: none; color: var(--ink); }
.brand:hover { color: var(--ink); }
.brand-mark { display: inline-flex; gap: 2px; }
.brand-mark span {
  display: inline-grid; place-items: center; width: 1.05rem; height: 1.5rem;
  background: var(--ink); color: var(--paper); border-radius: 3px;
  font: 700 .8rem/1 var(--mono);
}
.brand-mark span:last-child { background: var(--blue); }
.brand-name { font-family: var(--sans); font-weight: 700; font-size: 1rem; letter-spacing: -.01em; }

.site-nav ul { list-style: none; display: flex; gap: .25rem; margin: 0; padding: 0; }
.site-nav a {
  display: block; padding: .45rem .7rem; border-radius: 6px;
  font-family: var(--sans); font-size: .92rem; color: var(--ink-2); text-decoration: none;
}
.site-nav a:hover { background: var(--paper-2); color: var(--ink); }

.nav-toggle {
  display: none; width: 2.75rem; height: 2.75rem; border: 1px solid var(--rule-strong);
  background: var(--card); border-radius: 8px; cursor: pointer; padding: 0;
  align-items: center; justify-content: center;
}
.nav-toggle-bars, .nav-toggle-bars::before, .nav-toggle-bars::after {
  display: block; width: 18px; height: 2px; background: var(--ink); border-radius: 2px;
  position: relative; transition: transform .2s ease, background .2s ease;
}
.nav-toggle-bars::before, .nav-toggle-bars::after { content: ""; position: absolute; left: 0; }
.nav-toggle-bars::before { top: -6px; }
.nav-toggle-bars::after { top: 6px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 880px) {
  .js .nav-toggle { display: inline-flex; }
  .js .site-nav {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    background: var(--paper); border-bottom: 1px solid var(--rule);
    box-shadow: 0 12px 24px -16px rgba(31, 42, 55, .35);
  }
  .js .site-nav.is-open { display: block; }
  .js .site-nav ul { flex-direction: column; padding: .5rem 1.25rem 1rem; }
  .js .site-nav a { padding: .75rem .5rem; font-size: 1rem; border-bottom: 1px solid var(--rule); border-radius: 0; }
  .site-nav ul { flex-wrap: wrap; }
  .header-inner { position: relative; }
  html:not(.js) .header-inner { flex-direction: column; align-items: flex-start; padding: .75rem 1.25rem; }
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .8rem 1.25rem; border-radius: 8px;
  font: 600 .98rem/1.2 var(--sans); text-decoration: none;
  border: 1.5px solid transparent; transition: background .15s, border-color .15s, color .15s;
}
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: #111821; color: #fff; }
.btn-secondary { background: var(--card); color: var(--blue-dark); border-color: var(--blue); }
.btn-secondary:hover { background: var(--blue-soft); color: var(--blue-dark); }

/* Hero */
.hero { padding: 4.5rem 0 3.5rem; border-bottom: 1px solid var(--rule); }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 3.5rem; align-items: center; }
.eyebrow {
  font: 600 .78rem/1.4 var(--sans); text-transform: uppercase; letter-spacing: .09em;
  color: var(--blue); margin-bottom: 1.1rem;
}
.hero h1 { font-size: clamp(2.3rem, 5.2vw, 3.7rem); margin-bottom: .45em; }
.hero h1 em { font-style: italic; color: var(--blue-dark); font-weight: 600; }
.lede { font-size: 1.22rem; color: var(--ink); line-height: 1.55; }
.hero-copy > p:not(.eyebrow):not(.lede) { color: var(--ink-2); }
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin: 1.75rem 0 .9rem; }
.hero-note { font: .85rem/1.5 var(--sans); color: var(--muted); }

.hero-figure { margin: 0; }
.hero-figure figcaption { font: .82rem/1.5 var(--sans); color: var(--muted); margin-top: .8rem; text-align: center; }
.mock-browser {
  background: var(--card); border: 1px solid var(--rule-strong); border-radius: 12px;
  box-shadow: 0 1px 0 var(--rule), 0 24px 48px -28px rgba(31, 42, 55, .4);
  overflow: hidden; transform: rotate(-1.2deg);
}
.mock-bar { display: flex; align-items: center; gap: 6px; padding: .6rem .8rem; background: var(--paper-2); border-bottom: 1px solid var(--rule); }
.mock-bar > span { width: 10px; height: 10px; border-radius: 50%; background: var(--rule-strong); }
.mock-url {
  margin-left: .6rem; flex: 1; background: var(--card); border: 1px solid var(--rule);
  border-radius: 5px; padding: .15rem .6rem; font: .75rem var(--mono); color: var(--muted);
}
.mock-body { padding: 1.6rem 1.5rem 1.8rem; }
.mock-line { height: 9px; border-radius: 5px; background: var(--paper-2); margin: .65rem 0; }
.w40 { width: 40%; } .w60 { width: 60%; } .w70 { width: 70%; } .w80 { width: 80%; } .w90 { width: 90%; }
.mock-counter {
  display: flex; flex-direction: column; align-items: center; gap: .55rem;
  margin: 1.5rem 0; padding: 1.1rem; border: 1px dashed var(--rule-strong); border-radius: 8px;
}
.mock-counter-label { font: italic .95rem var(--serif); color: var(--ink-2); }
.odometer { display: inline-flex; gap: 3px; padding: 4px; background: #11161d; border-radius: 6px; }
.odometer span {
  display: grid; place-items: center; width: 1.7rem; height: 2.4rem;
  background: linear-gradient(#2a333f 0 49%, #1b222b 51% 100%);
  color: #f5f1e6; font: 700 1.35rem/1 var(--mono); border-radius: 3px;
}
.odometer span:last-child { color: #8fb2ff; }

/* At a glance */
.glance { background: var(--ink); color: #e9ecf1; }
.glance-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
.glance-grid > div { padding: 1.6rem 1.5rem; border-left: 1px solid rgba(255,255,255,.12); }
.glance-grid > div:first-child { border-left: 0; padding-left: 0; }
.glance-title { font: 650 1rem/1.3 var(--sans); color: #fff; margin-bottom: .35rem; letter-spacing: 0; }
.glance p { margin: 0; font-size: .97rem; color: #c6cdd7; }
.glance code { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.16); color: #fff; }

/* Sections */
.section { padding: 5rem 0; }
.section-alt { background: var(--paper-2); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.section-head { max-width: 760px; margin-bottom: 2.5rem; }
.section-num {
  font: 700 .8rem/1 var(--mono); color: var(--blue); letter-spacing: .08em; margin-bottom: .9rem;
  display: flex; align-items: center; gap: .6rem;
}
.section-num::after { content: ""; height: 1px; width: 3rem; background: var(--blue); opacity: .5; }
.section-head h2 { font-size: clamp(1.8rem, 3.6vw, 2.5rem); }
.section-intro { font-size: 1.12rem; color: var(--ink-2); }

/* Tags & statuses */
.tag {
  display: inline-block; font: 700 .68rem/1 var(--mono); letter-spacing: .04em;
  padding: .28rem .4rem; border-radius: 4px; vertical-align: .12em; margin-right: .2rem;
}
.tag-js { background: var(--blue-soft); color: var(--blue-dark); border: 1px solid #c9d6f3; }
.tag-img { background: #ece7dc; color: var(--ink); border: 1px solid var(--rule-strong); }
.status {
  display: inline-block; font: 650 .72rem/1 var(--sans); letter-spacing: .02em;
  padding: .3rem .5rem; border-radius: 999px; margin-right: .35rem; white-space: nowrap; vertical-align: .08em;
}
.status-confirmed { background: var(--green-soft); color: var(--green); border: 1px solid #bfdcc9; }
.status-test { background: var(--amber-soft); color: var(--amber); border: 1px solid #ecd6a6; }

/* Comparison table */
.table-scroll {
  overflow-x: auto; border: 1px solid var(--rule-strong); border-radius: var(--radius);
  background: var(--card); box-shadow: 0 18px 40px -32px rgba(31,42,55,.45);
}
.compare { width: 100%; border-collapse: collapse; min-width: 720px; font-size: .98rem; }
.compare caption {
  text-align: left; padding: 1rem 1.25rem; font: 600 .82rem/1.4 var(--sans);
  color: var(--muted); text-transform: uppercase; letter-spacing: .07em; border-bottom: 1px solid var(--rule);
}
.compare th, .compare td { padding: 1rem 1.25rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--rule); }
.compare thead th {
  font: 650 .95rem/1.3 var(--sans); background: var(--paper-2); border-bottom: 2px solid var(--rule-strong);
  position: sticky; top: 0;
}
.compare thead th:first-child { width: 20%; }
.compare tbody th { font: 650 .92rem/1.4 var(--sans); color: var(--ink); background: #fcfaf5; }
.compare td + td { border-left: 1px dashed var(--rule); }
.compare tbody tr:last-child > * { border-bottom: 0; }
.compare tbody tr:hover td { background: #fdfbf6; }

.callout {
  margin-top: 2rem; padding: 1.5rem 1.75rem; background: var(--blue-soft);
  border-left: 4px solid var(--blue); border-radius: 0 var(--radius) var(--radius) 0;
}
.callout h3 { color: var(--blue-dark); }
.callout p { margin: 0; color: var(--ink); }

/* Platform cards */
.legend { list-style: none; padding: 0; margin: 0 0 1.75rem; display: grid; gap: .5rem; font: .92rem/1.5 var(--sans); color: var(--ink-2); }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.card {
  background: var(--card); border: 1px solid var(--rule); border-radius: var(--radius);
  padding: 1.4rem 1.4rem 1.2rem; display: flex; flex-direction: column;
}
.card h3 { font-size: 1.1rem; padding-bottom: .7rem; border-bottom: 1px solid var(--rule); margin-bottom: .9rem; }
.facts { margin: 0; display: grid; gap: .9rem; }
.facts dt { font: 700 .72rem/1 var(--sans); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: .4rem; }
.facts dd { margin: 0; font-size: .95rem; line-height: 1.55; color: var(--ink-2); }
.card-tip {
  margin: 1rem 0 0; padding-top: .85rem; border-top: 1px dashed var(--rule);
  font: .86rem/1.5 var(--sans); color: var(--muted); margin-top: auto;
}

/* Diagram */
.diagram {
  margin: 0 0 3rem; padding: 2rem 1.5rem 1.4rem; background: var(--card);
  border: 1px solid var(--rule-strong); border-radius: var(--radius);
  background-image: radial-gradient(var(--rule) 1px, transparent 1px);
  background-size: 18px 18px;
}
.flow { display: flex; align-items: stretch; justify-content: space-between; gap: .4rem; }
.node {
  flex: 1 1 0; min-width: 0; position: relative; background: var(--card);
  border: 1.5px solid var(--ink); border-radius: 8px; padding: 1.4rem .9rem .9rem;
  display: flex; flex-direction: column; gap: .3rem; box-shadow: 3px 3px 0 var(--ink);
}
.node-step {
  position: absolute; top: -.8rem; left: .8rem; width: 1.6rem; height: 1.6rem; border-radius: 50%;
  display: grid; place-items: center; background: var(--ink); color: #fff; font: 700 .78rem/1 var(--mono);
}
.node-title { font: 650 .92rem/1.25 var(--sans); }
.node-text { font: .85rem/1.45 var(--sans); color: var(--ink-2); }
.node-cache { border-style: dashed; border-color: var(--amber); box-shadow: 3px 3px 0 #e9cf96; background: #fffaf0; }
.node-cache .node-step { background: var(--amber); }
.node-server { border-color: var(--blue); box-shadow: 3px 3px 0 var(--blue); background: #f6f9ff; }
.node-server .node-step { background: var(--blue); }
.arrow { flex: 0 0 1.6rem; align-self: center; height: 2px; background: var(--ink); position: relative; }
.arrow::after {
  content: ""; position: absolute; right: -1px; top: 50%; width: 8px; height: 8px;
  border-top: 2px solid var(--ink); border-right: 2px solid var(--ink); transform: translateY(-50%) rotate(45deg);
}
.diagram figcaption { font: .85rem/1.5 var(--sans); color: var(--muted); margin-top: 1.6rem; text-align: center; }

.concepts { display: grid; grid-template-columns: repeat(6, 1fr); gap: 1.25rem; }
.concept { grid-column: span 2; padding-top: 1rem; border-top: 2px solid var(--ink); }
.concept:nth-child(4), .concept:nth-child(5) { grid-column: span 3; border-top-color: var(--blue); }
.concept p { color: var(--ink-2); font-size: 1rem; margin: 0; }

/* No-JS section */
.prose-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 3rem; align-items: start; margin-bottom: 3rem; }
.prose h3 { font-size: 1.15rem; }
.steps { padding: 0; margin: 0; list-style: none; counter-reset: s; }
.steps li { counter-increment: s; position: relative; padding: 0 0 1.1rem 2.75rem; color: var(--ink-2); }
.steps li::before {
  content: counter(s); position: absolute; left: 0; top: .05rem; width: 1.9rem; height: 1.9rem;
  border: 1.5px solid var(--ink); border-radius: 50%; display: grid; place-items: center;
  font: 700 .85rem/1 var(--mono); color: var(--ink); background: var(--card);
}
.notice {
  background: var(--amber-soft); border: 1px solid #ecd6a6; border-radius: 8px;
  padding: .9rem 1.1rem; font: .9rem/1.55 var(--sans); color: #5a3d00; margin-bottom: 1rem;
}
.notice code { background: rgba(255,255,255,.6); }
.code-block { background: #161c24; border-radius: 8px; overflow: hidden; margin-bottom: 1rem; border: 1px solid #0d1117; }
.code-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: .45rem .6rem .45rem 1rem; background: #1f2731; border-bottom: 1px solid #2c3643;
  font: 600 .75rem/1 var(--sans); color: #9aa7b8; letter-spacing: .06em; text-transform: uppercase;
}
.copy-btn {
  font: 600 .75rem/1 var(--sans); color: #dbe3ee; background: transparent; cursor: pointer;
  border: 1px solid #3a4655; border-radius: 5px; padding: .4rem .65rem;
}
.copy-btn:hover { background: #2c3643; }
html:not(.js) .copy-btn { display: none; }
.code-block pre { margin: 0; padding: 1rem 1.1rem; overflow-x: auto; }
.code-block code { background: none; border: 0; padding: 0; color: #e6edf3; font-size: .86rem; line-height: 1.6; overflow-wrap: normal; white-space: pre; }
.small { font: .88rem/1.55 var(--sans); color: var(--muted); }

.topic-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
.topic { background: var(--card); border: 1px solid var(--rule); border-radius: var(--radius); padding: 1.4rem 1.5rem; }
.topic p { margin: 0; color: var(--ink-2); font-size: 1rem; }

/* FAQ */
.faq { border-top: 1px solid var(--rule-strong); }
.faq details { border-bottom: 1px solid var(--rule-strong); }
.faq summary {
  list-style: none; cursor: pointer; padding: 1.25rem 2.5rem 1.25rem 0; position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary h3 { display: inline; font-family: var(--serif); font-size: 1.2rem; font-weight: 650; margin: 0; }
.faq summary::after {
  content: "+"; position: absolute; right: .25rem; top: 50%; transform: translateY(-50%);
  font: 400 1.6rem/1 var(--sans); color: var(--blue);
}
.faq details[open] summary::after { content: "–"; }
.faq summary:hover h3 { color: var(--blue-dark); }
.faq details p { margin: 0 0 1.4rem; color: var(--ink-2); max-width: 68ch; }

/* Resources */
.resources { display: grid; grid-template-columns: 1.1fr .9fr; gap: 2rem; align-items: start; }
.resource-feature { background: var(--card); border: 1px solid var(--rule-strong); border-radius: var(--radius); padding: 1.75rem; }
.resource-feature h3 { font-family: var(--serif); font-size: 1.5rem; }
.label { font: 700 .72rem/1 var(--sans); text-transform: uppercase; letter-spacing: .1em; color: var(--blue); margin-bottom: .7rem; }
.disclosure {
  margin: 1.25rem 0 0; padding: .9rem 1rem; background: var(--paper-2);
  border-radius: 6px; font: .88rem/1.55 var(--sans); color: var(--ink-2);
}
.resource-list ul { list-style: none; padding: 0; margin: 0; }
.resource-list li { padding: .85rem 0; border-bottom: 1px solid var(--rule); color: var(--ink-2); font-size: .98rem; }
.resource-list li:first-child { border-top: 1px solid var(--rule); }
.resource-list a { font-weight: 600; }

/* Footer */
.site-footer { padding: 2.5rem 0 3rem; border-top: 1px solid var(--rule); }
.footer-inner { display: grid; grid-template-columns: 1fr 1.4fr; gap: 2rem; font: .9rem/1.55 var(--sans); color: var(--muted); }
.footer-inner p { margin: 0; }
.footer-brand { font-weight: 700; color: var(--ink); margin-bottom: .25rem !important; }

/* Responsive */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-figure { max-width: 440px; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .flow { flex-direction: column; }
  .arrow { flex-basis: 1.4rem; width: 2px; height: 1.4rem; }
  .arrow::after { right: auto; left: 50%; top: auto; bottom: -1px; transform: translateX(-50%) rotate(135deg); }
  .node { padding: 1.2rem 1rem .9rem 3rem; }
  .node-step { top: 50%; left: .8rem; transform: translateY(-50%); }
  .concepts { grid-template-columns: 1fr 1fr; }
  .concept, .concept:nth-child(4), .concept:nth-child(5) { grid-column: span 1; }
  .prose-grid, .resources { grid-template-columns: 1fr; gap: 2rem; }
}
@media (max-width: 680px) {
  body { font-size: 1rem; }
  .hero { padding: 3rem 0 2.5rem; }
  .section { padding: 3.5rem 0; }
  .glance-grid { grid-template-columns: 1fr; }
  .glance-grid > div { border-left: 0; border-top: 1px solid rgba(255,255,255,.12); padding: 1.25rem 0; }
  .glance-grid > div:first-child { border-top: 0; }
  .cards, .concepts, .topic-grid, .footer-inner { grid-template-columns: 1fr; }
  .hero-actions .btn { flex: 1 1 100%; justify-content: center; }
  .mock-browser { transform: none; }
  .odometer span { width: 1.45rem; height: 2.1rem; font-size: 1.15rem; }
}

@media print {
  .site-header, .hero-actions, .copy-btn, .nav-toggle { display: none !important; }
  .section-alt, .glance { background: none; color: inherit; }
  .faq details > p { display: block; }
}

/* Live counter within the existing hero illustration. */
.live-counter-link { display: inline-flex; align-items: center; justify-content: center; min-height: 36px; min-width: 130px; max-width: 100%; }
.live-counter-link img { display: block; max-width: 100%; height: auto; border: 0; }
.live-counter-link:focus-visible { outline: 2px solid var(--blue); outline-offset: 4px; border-radius: 3px; }