:root {
  --ink: #0f1b23;
  --ink-soft: #263740;
  --slate: #4d5d65;
  --muted: #60717a;
  --line: #d7e3e6;
  --line-strong: #b9cbd0;
  --paper: #ffffff;
  --ice: #f4fafb;
  --cyan: #13bfd0;
  --cyan-dark: #066d79;
  --cyan-soft: #dff7fa;
  --green: #1d936b;
  --focus: #996300;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow: 0 18px 46px rgba(15, 27, 35, 0.12);
  --max: 1120px;
  --display: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --body: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { overflow-x: hidden; scroll-behavior: smooth; scroll-padding-top: 82px; }

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { font-family: var(--display); line-height: 1.08; letter-spacing: -0.03em; }
h1 { margin-bottom: 22px; font-size: clamp(2.85rem, 6vw, 5.2rem); font-weight: 780; }
h2 { margin-bottom: 16px; font-size: clamp(2.1rem, 4vw, 3.5rem); font-weight: 760; }
h3 { margin-bottom: 8px; font-size: 1.35rem; font-weight: 720; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  color: white;
  background: var(--ink);
  text-decoration: none;
  transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 4px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  color: white;
  background: rgba(15, 27, 35, 0.97);
  transition: box-shadow 180ms ease, border-color 180ms ease;
}
.site-header.scrolled { border-color: rgba(255, 255, 255, 0.2); box-shadow: 0 10px 28px rgba(15, 27, 35, 0.14); }
.nav-shell {
  width: min(calc(100% - 40px), var(--max));
  min-height: 70px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: block; width: 132px; }
.brand img { width: 100%; height: auto; aspect-ratio: 23 / 7; object-fit: contain; }
.site-nav { display: flex; align-items: center; gap: 25px; color: rgba(255, 255, 255, 0.76); font-size: 13px; font-weight: 680; }
.site-nav a { min-height: 24px; display: inline-flex; align-items: center; text-decoration: none; transition: color 160ms ease, background 160ms ease; }
.site-nav a:hover { color: white; }
.site-nav .nav-cta { min-height: 40px; padding: 8px 14px; border-radius: 9px; color: var(--ink); background: var(--cyan); }
.site-nav .nav-cta:hover { color: var(--ink); background: #46d4df; }
.menu-toggle { display: none; }

.hero {
  width: min(calc(100% - 40px), var(--max));
  min-height: 620px;
  margin: 0 auto;
  padding: 76px 0 84px;
  display: grid;
  grid-template-columns: minmax(0, 0.87fr) minmax(0, 1.13fr);
  gap: 72px;
  align-items: center;
}
.hero-copy { position: relative; z-index: 2; }
.eyebrow,
.kicker {
  margin-bottom: 17px;
  color: var(--cyan-dark);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 760;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.eyebrow { display: flex; align-items: center; gap: 9px; }
.eyebrow-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(29, 147, 107, 0.13); }
.kicker-light { color: var(--cyan); }
.hero h1 { max-width: 580px; }
h1 span { color: var(--cyan-dark); }
.hero-lede,
.section-heading > p:last-child,
.faq-intro > p:last-child {
  max-width: 650px;
  margin-bottom: 0;
  color: var(--slate);
  font-size: 18px;
  line-height: 1.6;
}
.hero-mnemonic { max-width: 590px; margin: 19px 0 26px; color: var(--ink-soft); font-size: 14px; font-weight: 680; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.button {
  min-height: 48px;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 720;
  text-decoration: none;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease, border-color 160ms ease;
}
.button:hover { transform: translateY(-1px); }
.button-primary { background: var(--cyan); box-shadow: 0 10px 22px rgba(19, 191, 208, 0.2); }
.button-primary:hover { background: #42d0dc; box-shadow: 0 13px 26px rgba(19, 191, 208, 0.27); }
.button-secondary { border-color: var(--line-strong); background: white; }
.button-secondary:hover { border-color: var(--cyan-dark); background: var(--ice); }
.button[aria-disabled="true"] { opacity: 0.52; cursor: not-allowed; pointer-events: none; box-shadow: none; }
.button[aria-disabled="true"]:hover { transform: none; }
.hero-note { margin: 17px 0 0; color: var(--muted); font-size: 12px; }

.app-shot { min-width: 0; margin: 0; }
.hero-app-shot {
  position: relative;
  width: 100%;
  padding: 11px 11px 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: #edf4f5;
  box-shadow: var(--shadow);
}
.hero-app-shot::before {
  content: "";
  position: absolute;
  top: 13px;
  left: 23px;
  z-index: 1;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #cb5e59;
  box-shadow: 13px 0 #d6a343, 26px 0 #52a778;
}
.shot-open { display: block; border-radius: 12px; }
.shot-open:focus-visible { outline-color: var(--cyan-dark); outline-offset: 5px; }
.app-shot img { width: 100%; border: 1px solid rgba(15, 27, 35, 0.15); border-radius: 12px; box-shadow: 0 14px 32px rgba(15, 27, 35, 0.16); transition: transform 180ms ease, box-shadow 180ms ease; }
.shot-open:hover img { transform: translateY(-2px); box-shadow: 0 18px 38px rgba(15, 27, 35, 0.2); }
.app-shot figcaption { padding: 10px 2px 11px; color: var(--muted); font-family: var(--mono); font-size: 9px; letter-spacing: 0.025em; }
.app-shot figcaption span { margin-right: 7px; color: var(--cyan-dark); font-weight: 760; text-transform: uppercase; }

.section,
.trust-shell { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }
.section { padding: 86px 0; }
.section-heading { max-width: 760px; margin-bottom: 43px; }
.section-heading.compact { max-width: 700px; }

.features-section { padding-top: 72px; }
.feature-grid {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}
.feature-grid article { min-width: 0; min-height: 215px; padding: 25px; background: var(--ice); }
.feature-grid article > span { display: block; margin-bottom: 34px; color: var(--cyan-dark); font-family: var(--mono); font-size: 9px; font-weight: 760; letter-spacing: 0.08em; text-transform: uppercase; }
.feature-grid h3 { margin-bottom: 9px; }
.feature-grid p { margin: 0; color: var(--slate); font-size: 14px; line-height: 1.58; }

.evidence-section { padding-top: 18px; }
.evidence-row { padding: 56px 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: minmax(260px, 0.64fr) minmax(0, 1.36fr); gap: 58px; align-items: center; }
.evidence-row:last-child { padding-bottom: 0; }
.evidence-row-reverse { grid-template-columns: minmax(0, 1.36fr) minmax(260px, 0.64fr); }
.evidence-row-reverse .evidence-copy { order: 2; }
.evidence-row-reverse .evidence-shot { order: 1; }
.evidence-copy h3 { max-width: 470px; margin-bottom: 14px; font-size: clamp(2rem, 3.3vw, 3.1rem); }
.evidence-copy > p:not(.proof-label, .micro-note) { color: var(--slate); font-size: 16px; line-height: 1.62; }
.proof-label { margin-bottom: 14px; color: var(--cyan-dark); font-family: var(--mono); font-size: 10px; font-weight: 760; letter-spacing: 0.08em; text-transform: uppercase; }
.check-list { margin: 28px 0; padding: 0; list-style: none; }
.check-list li { position: relative; margin: 11px 0; padding-left: 27px; color: var(--ink-soft); font-size: 14px; }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--cyan-dark); font-weight: 800; }
.micro-note { max-width: 500px; margin: 0; color: var(--muted); font-family: var(--mono); font-size: 10px; line-height: 1.55; }
.evidence-shot { padding: 11px 11px 0; border: 1px solid var(--line-strong); border-radius: var(--radius-lg); background: #edf4f5; box-shadow: var(--shadow); }

.trust-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.trust-grid article {
  min-width: 0;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--ice);
}
.trust-grid article > span { display: block; margin-bottom: 23px; color: var(--cyan-dark); font-family: var(--mono); font-size: 9px; font-weight: 760; letter-spacing: 0.08em; text-transform: uppercase; }
.trust-grid h3 { color: var(--ink); }
.trust-grid p { margin: 0; color: var(--slate); font-size: 14px; line-height: 1.55; }

.trust-section { color: white; background: var(--ink); }
.trust-shell { padding: 86px 0; }
.trust-intro h2 { color: white; }
.trust-intro > p:last-child { color: rgba(255, 255, 255, 0.68); }
.boundary,
.boundary-map {
  min-width: 0;
  border: 1px solid rgba(255, 255, 255, 0.19);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
}
.boundary-map { padding: 20px; display: grid; grid-template-columns: minmax(0, 1fr) 105px minmax(120px, 0.48fr); align-items: center; gap: 10px; }
.boundary { min-height: 142px; padding: 15px; }
.boundary-label { margin-bottom: 15px; color: rgba(255, 255, 255, 0.56); font-family: var(--mono); font-size: 9px; letter-spacing: 0.08em; text-transform: uppercase; }
.boundary-nodes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 7px; }
.boundary-nodes > span,
.provider-boundary > span { min-height: 68px; padding: 9px; border: 1px solid rgba(255, 255, 255, 0.13); border-radius: 9px; display: flex; flex-direction: column; justify-content: center; text-align: center; background: rgba(255, 255, 255, 0.04); }
.boundary-nodes i { display: none; }
.boundary b { display: block; font-size: 11px; }
.boundary small { display: block; margin-top: 3px; color: rgba(255, 255, 255, 0.58); font-size: 9px; line-height: 1.35; }
.boundary .pongu-node { border-color: rgba(19, 191, 208, 0.46); background: rgba(19, 191, 208, 0.1); }
.boundary .pongu-node b { color: var(--cyan); }
.provider-boundary { display: flex; flex-direction: column; }
.provider-boundary > span { flex: 1; }
.provider-hop { display: flex; align-items: center; justify-content: center; flex-direction: column; color: rgba(255, 255, 255, 0.62); text-align: center; }
.provider-hop span { margin-bottom: 3px; font-family: var(--mono); font-size: 8px; line-height: 1.4; }
.provider-hop b { color: var(--cyan); font-size: 20px; font-weight: 500; }

.compatibility-section { padding-top: 0; }
.compatibility-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.compatibility-card { min-width: 0; min-height: 160px; padding: 22px; border: 1px solid var(--line); border-radius: var(--radius-md); background: white; }
.compatibility-card { grid-column: span 2; }
.compatibility-card.advanced { grid-column: span 1; }
.compatibility-card .status { margin-bottom: 22px; }
.compatibility-card h3 { margin-bottom: 8px; }
.compatibility-card p { margin: 0; color: var(--slate); font-size: 14px; line-height: 1.55; }
.status { width: fit-content; padding: 5px 8px; border-radius: 999px; font-family: var(--mono); font-size: 8px; font-weight: 760; letter-spacing: 0.04em; text-transform: uppercase; }
.status { color: #765400; background: #fff1cb; }

.path-grid { margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); list-style: none; }
.path-grid li { min-width: 0; min-height: 260px; padding: 22px; border: 1px solid var(--line); border-right: 0; }
.path-grid li:first-child { border-radius: var(--radius-md) 0 0 var(--radius-md); }
.path-grid li:last-child { border-right: 1px solid var(--line); border-radius: 0 var(--radius-md) var(--radius-md) 0; }
.step-number { color: var(--muted); font-family: var(--mono); font-size: 9px; }
.step-symbol { width: 51px; height: 51px; margin: 25px 0 28px; border-radius: 13px; display: grid; place-items: center; color: var(--ink); background: var(--cyan-soft); font-size: 1.35rem; font-weight: 760; }
.path-grid p { margin: 0; color: var(--slate); font-size: 13px; line-height: 1.55; }

.pricing-section { padding-top: 0; }
.pricing-intro { max-width: 760px; margin-bottom: 34px; }
.pricing-intro > p:last-child { max-width: 650px; margin-bottom: 0; color: var(--slate); font-size: 17px; line-height: 1.6; }
.release-card { padding: 28px; border: 1px solid var(--line-strong); border-radius: var(--radius-lg); display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 28px; align-items: center; background: var(--ice); }
.release-card h3 { max-width: 680px; margin-bottom: 8px; font-size: 1.5rem; }
.release-card > div:first-child > p:not(.download-badge, .pricing-note) { max-width: 680px; margin-bottom: 18px; color: var(--slate); font-size: 14px; line-height: 1.55; }
.download-badge { width: fit-content; margin: 0 0 18px; padding: 12px 14px; border: 1px solid #b8e2e7; border-radius: var(--radius-sm); background: var(--cyan-soft); }
.download-badge strong { display: block; margin-bottom: 3px; font-size: 12px; }
.download-badge span { display: block; color: var(--slate); font-family: var(--mono); font-size: 9px; line-height: 1.45; }
.purchase-status { display: flex; align-items: center; gap: 9px; color: var(--cyan); font-family: var(--mono); font-size: 10px; font-weight: 760; letter-spacing: 0.08em; text-transform: uppercase; }
.purchase-status span { width: 8px; height: 8px; flex: 0 0 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(29, 147, 107, 0.14); }
.release-actions { display: flex; flex-direction: column; gap: 9px; }
.release-actions .button { width: 100%; white-space: nowrap; }
.pricing-note { margin: 16px 0 0; color: var(--muted); font-size: 12px; line-height: 1.55; }

.faq-section { display: grid; grid-template-columns: 0.72fr 1.28fr; gap: 72px; align-items: start; }
.faq-intro { position: sticky; top: 106px; }
.faq-intro h2 { font-size: clamp(2.1rem, 4vw, 3.3rem); }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { position: relative; padding: 20px 42px 20px 0; list-style: none; font-family: var(--display); font-size: 1.05rem; font-weight: 700; cursor: pointer; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; top: 17px; right: 3px; color: var(--cyan-dark); font-size: 23px; font-weight: 400; }
.faq-list details[open] summary::after { content: "–"; }
.faq-list details p { max-width: 650px; margin: -2px 35px 21px 0; color: var(--slate); font-size: 14px; line-height: 1.62; }

.site-footer { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; padding: 44px 0 29px; display: grid; grid-template-columns: 1fr auto; gap: 25px; align-items: end; }
.site-footer > div:first-child img,
.site-footer .footer-logo { width: 122px; height: 37px; max-width: 122px; aspect-ratio: 23 / 7; margin-bottom: 10px; object-fit: contain; }
.site-footer > div:first-child p { margin: 0; color: var(--slate); font-size: 12px; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 18px; font-size: 12px; font-weight: 680; }
.footer-links a { min-height: 24px; display: inline-flex; align-items: center; text-decoration: none; }
.footer-links a:hover { color: var(--cyan-dark); }
.site-footer > p { grid-column: 1 / -1; margin: 4px 0 0; padding-top: 18px; border-top: 1px solid var(--line); color: var(--muted); font-size: 10px; line-height: 1.5; }

/* The release and return pages use the same quiet system palette. */
.purchase-page { min-height: 100vh; color: white; background: var(--ink); }
.purchase-header { width: min(calc(100% - 40px), 980px); min-height: 80px; margin: 0 auto; display: flex; align-items: center; }
.purchase-header .brand { width: 138px; }
.purchase-main { width: min(calc(100% - 40px), 980px); min-height: calc(100vh - 80px); margin: 0 auto; padding: 50px 0 80px; display: grid; place-items: center; }
.purchase-card { width: min(100%, 720px); padding: 52px; border: 1px solid rgba(255, 255, 255, 0.16); border-radius: var(--radius-lg); background: #172833; box-shadow: 0 26px 68px rgba(0, 0, 0, 0.25); }
.purchase-mark { width: 74px; height: 74px; margin-bottom: 28px; border: 1px solid rgba(19, 191, 208, 0.3); border-radius: 20px; display: grid; place-items: center; background: rgba(19, 191, 208, 0.08); }
.purchase-mark img { width: 60px; height: 60px; object-fit: contain; }
.purchase-card h1 { color: white; }
.purchase-lede { max-width: 590px; color: rgba(255, 255, 255, 0.68); font-size: 17px; line-height: 1.6; }
.purchase-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.purchase-note { margin: 26px 0 0; padding-top: 18px; border-top: 1px solid rgba(255, 255, 255, 0.12); color: rgba(255, 255, 255, 0.58); font-size: 11px; }
.purchase-note a { color: white; }

/* Public policy pages are intentionally plain and easy to scan from an OAuth consent screen. */
.policy-page { background: var(--ice); }
.policy-main { width: min(calc(100% - 40px), 960px); margin: 0 auto; padding: 76px 0 28px; }
.policy-intro { max-width: 740px; margin-bottom: 42px; }
.policy-intro h1 { max-width: 760px; margin-bottom: 13px; }
.policy-intro > p:last-child { max-width: 700px; margin-bottom: 0; color: var(--slate); font-size: 18px; line-height: 1.65; }
.policy-intro a, .policy-card a { color: var(--cyan-dark); text-underline-offset: 3px; }
.policy-meta { margin-bottom: 19px; color: var(--muted); font-family: var(--mono); font-size: 11px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; }
.policy-card { padding: 48px 56px 55px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--paper); box-shadow: var(--shadow); }
.policy-card section + section { margin-top: 40px; padding-top: 34px; border-top: 1px solid var(--line); }
.policy-card h2 { margin-bottom: 13px; font-size: clamp(1.65rem, 3vw, 2.25rem); }
.policy-card p, .policy-card li { color: var(--slate); font-size: 15px; line-height: 1.7; }
.policy-card p:last-child { margin-bottom: 0; }
.policy-card ul, .policy-card ol { margin: 18px 0 0; padding-left: 25px; }
.policy-card li + li { margin-top: 11px; }
.policy-card code { padding: 2px 5px; border-radius: 5px; color: var(--ink); background: var(--cyan-soft); font-family: var(--mono); font-size: 0.85em; }
.policy-callout { margin-top: 22px; padding: 18px 20px; border-left: 3px solid var(--cyan); background: var(--ice); }
.policy-footer { padding-top: 42px; }

[data-reveal] { opacity: 1; transform: none; }
html.js:not(.js-loading) [data-reveal] { opacity: 0; transform: translateY(14px); transition: opacity 420ms ease, transform 420ms ease; }
html.js:not(.js-loading) [data-reveal].visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1000px) {
  .hero { gap: 42px; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .evidence-row,
  .evidence-row-reverse { grid-template-columns: 1fr; gap: 34px; }
  .evidence-row-reverse .evidence-copy,
  .evidence-row-reverse .evidence-shot { order: initial; }
  .faq-section { gap: 42px; }
  .faq-intro { position: static; max-width: 700px; }
  .compatibility-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .compatibility-card,
  .compatibility-card.advanced { grid-column: auto; }
}

@media (max-width: 820px) {
  .site-nav { position: fixed; inset: 70px 0 auto; z-index: 90; padding: 20px 20px 26px; border-top: 1px solid rgba(255, 255, 255, 0.13); display: none; flex-direction: column; align-items: stretch; gap: 2px; color: rgba(255, 255, 255, 0.8); background: var(--ink); box-shadow: 0 18px 36px rgba(15, 27, 35, 0.24); }
  .site-nav.open { display: flex; }
  .site-nav a { min-height: 44px; padding: 11px 5px; }
  .site-nav .nav-cta { margin-top: 8px; justify-content: center; }
  .menu-toggle { width: 44px; height: 44px; padding: 10px; border: 0; display: flex; flex-direction: column; justify-content: center; gap: 5px; background: transparent; cursor: pointer; }
  .menu-toggle > span:not(.sr-only) { width: 22px; height: 2px; border-radius: 999px; background: white; transition: transform 160ms ease, opacity 160ms ease; }
  .menu-toggle[aria-expanded="true"] > span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] > span:nth-child(2) { opacity: 0; }
  .menu-toggle[aria-expanded="true"] > span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .hero { grid-template-columns: 1fr; min-height: 0; padding-top: 62px; }
  .hero-copy { max-width: 680px; }
  .hero-app-shot { max-width: 720px; }
  .path-grid { grid-template-columns: 1fr; }
  .compatibility-grid { grid-template-columns: 1fr; }
  .compatibility-card,
  .compatibility-card.advanced { grid-column: auto; }
  .path-grid li { min-height: 0; border: 1px solid var(--line); border-bottom: 0; border-radius: 0; }
  .path-grid li:first-child { border-radius: var(--radius-md) var(--radius-md) 0 0; }
  .path-grid li:last-child { border-bottom: 1px solid var(--line); border-radius: 0 0 var(--radius-md) var(--radius-md); }
  .boundary-map { grid-template-columns: 1fr; }
  .provider-hop { min-height: 57px; }
  .provider-hop b { transform: rotate(90deg); }
  .release-card { grid-template-columns: 1fr; }
  .release-actions { flex-direction: row; flex-wrap: wrap; }
  .release-actions .button { width: auto; }
  .site-footer { grid-template-columns: 1fr; align-items: start; }
  .footer-links { justify-content: flex-start; }
}

@media (max-width: 680px) {
  body { font-size: 16px; }
  .nav-shell, .hero, .section, .trust-shell, .site-footer { width: min(calc(100% - 28px), var(--max)); }
  .nav-shell { min-height: 66px; }
  .site-nav { top: 66px; }
  .brand { width: 122px; }
  .hero { padding: 53px 0 65px; gap: 38px; }
  h1 { font-size: clamp(2.85rem, 14vw, 4rem); }
  .hero-lede, .section-heading > p:last-child, .faq-intro > p:last-child { font-size: 16px; }
  .hero-mnemonic { font-size: 13px; }
  .hero-actions { flex-direction: column; }
  .button { width: 100%; min-height: 48px; }
  .hero-app-shot { padding: 9px 9px 0; border-radius: var(--radius-md); }
  .hero-app-shot::before { top: 11px; left: 19px; }
  .app-shot img { border-radius: 9px; }
  .app-shot figcaption { font-size: 8px; }
  .section { padding: 68px 0; }
  .section-heading { margin-bottom: 34px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-grid article { min-height: 0; padding: 22px; }
  .feature-grid article > span { margin-bottom: 23px; }
  .evidence-row { padding: 42px 0; }
  .evidence-copy h3 { font-size: 2rem; }
  .evidence-shot { padding: 9px 9px 0; border-radius: var(--radius-md); }
  .trust-shell { padding: 68px 0; }
  .trust-grid article { padding: 19px; }
  .trust-grid { grid-template-columns: 1fr; }
  .boundary-map { padding: 13px; }
  .boundary { padding: 13px; }
  .boundary-nodes { grid-template-columns: 1fr; gap: 7px; }
  .boundary-nodes i { display: block; color: rgba(255, 255, 255, 0.35); font-style: normal; text-align: center; transform: rotate(90deg); }
  .boundary-nodes > span { min-height: 53px; }
  .release-card { padding: 20px; }
  .release-actions { flex-direction: column; }
  .release-actions .button { width: 100%; }
  .faq-section { grid-template-columns: 1fr; gap: 31px; }
  .faq-list summary { padding-right: 34px; }
  .purchase-header, .purchase-main { width: min(calc(100% - 28px), 980px); }
  .purchase-main { padding: 35px 0 60px; }
  .purchase-card { padding: 37px 20px 24px; border-radius: 18px; }
  .purchase-actions { flex-direction: column; }
  .site-footer { padding-top: 38px; }
  .footer-links { gap: 13px 18px; }
  .footer-links a { min-height: 44px; }
  .policy-main { width: min(calc(100% - 28px), var(--max)); padding: 54px 0 20px; }
  .policy-intro > p:last-child { font-size: 16px; }
  .policy-card { padding: 31px 20px 34px; border-radius: 18px; }
  .policy-card section + section { margin-top: 31px; padding-top: 27px; }
  .policy-card p, .policy-card li { font-size: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
  html.js:not(.js-loading) [data-reveal] { opacity: 1; transform: none; transition: none; }
}