:root {
  --paper: #f5f7f6;
  --white: #ffffff;
  --ink: #111918;
  --muted: #4b5a56;
  --line: #cbd3d0;
  --soft: #e8eeeb;
  --teal: #006b5b;
  --teal-dark: #073d36;
  --signal: #ef5b55;
  --mono: Consolas, "Cascadia Mono", monospace;
  --sans: "HarmonyOS Sans SC", "MiSans", "Microsoft YaHei UI", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  --gutter: clamp(20px, 4vw, 68px);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button, a { touch-action: manipulation; -webkit-tap-highlight-color: rgba(0, 107, 91, .14); }
img { display: block; max-width: 100%; object-fit: cover; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { text-wrap: balance; }
.mobile-only { display: none; }
section { scroll-margin-top: 72px; }

.skip-link { position: fixed; left: 16px; top: -64px; z-index: 100; background: var(--ink); color: white; padding: 10px 16px; }
.skip-link:focus { top: 16px; }
:focus-visible { outline: 3px solid var(--signal); outline-offset: 4px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto minmax(160px, 1fr);
  align-items: center;
  min-height: 72px;
  padding: 0 var(--gutter);
  border-bottom: 1px solid var(--line);
  background: rgba(245, 247, 246, .94);
  backdrop-filter: blur(14px);
}
.brand { display: inline-flex; align-items: center; gap: 12px; width: max-content; }
.brand-mark { display: grid; width: 34px; height: 28px; align-content: center; gap: 6px; }
.brand-mark i { display: block; height: 3px; transform: skewX(-28deg); background: var(--teal); }
.brand-mark i:last-child { width: 68%; margin-left: 32%; background: var(--signal); }
.brand b { display: block; line-height: 1.2; font-size: 15px; font-weight: 600; }
.brand small { display: block; margin-top: 3px; color: var(--muted); font: 9px/1 var(--mono); letter-spacing: 0; }
.desktop-nav { display: flex; gap: clamp(20px, 3vw, 42px); font-size: 14px; }
.desktop-nav a, .header-cta { position: relative; padding: 8px 0; }
.desktop-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 1px; background: var(--teal); transition: right .2s ease; }
.desktop-nav a:hover::after { right: 0; }
.header-cta { justify-self: end; color: var(--teal-dark); font-size: 14px; font-weight: 500; }
.header-cta span { color: var(--signal); }
.menu-button { display: none; justify-self: end; width: 44px; height: 44px; padding: 12px 8px; border: 0; background: transparent; }
.menu-button span { display: block; height: 2px; margin: 5px 0; background: var(--ink); transition: transform .2s ease; }
.mobile-nav { position: fixed; inset: 72px 0 0; z-index: 45; padding: 32px var(--gutter); background: var(--paper); }
.mobile-nav a { display: block; padding: 18px 0; border-bottom: 1px solid var(--line); font-size: 22px; }

.hero { display: grid; grid-template-columns: minmax(0, 5fr) minmax(430px, 7fr); min-height: calc(100vh - 72px); border-bottom: 1px solid var(--line); }
.hero-copy { display: flex; flex-direction: column; justify-content: center; padding: clamp(56px, 8vw, 118px) var(--gutter) 52px; }
.hero-index, .section-index, .meta-label { color: var(--teal); font: 11px/1.4 var(--mono); letter-spacing: 0; text-transform: uppercase; }
.hero h1 { margin: 28px 0 32px; font-size: clamp(54px, 6.3vw, 104px); font-weight: 300; line-height: 1.05; letter-spacing: 0; }
.hero h1 span { color: var(--teal); }
.hero-lede { max-width: 600px; color: var(--muted); font-size: clamp(17px, 1.4vw, 21px); }
.hero-actions { display: flex; align-items: center; gap: 28px; margin-top: 26px; }
.button { display: inline-flex; justify-content: space-between; align-items: center; min-width: 184px; padding: 14px 18px; border: 1px solid var(--teal-dark); font-size: 14px; }
.button-primary { background: var(--teal-dark); color: white; transition: background .2s ease, color .2s ease; }
.button-primary:hover { background: var(--signal); }
.text-link { display: inline-flex; gap: 10px; align-items: center; border-bottom: 1px solid var(--ink); font-size: 14px; font-weight: 500; }
.text-link span { color: var(--signal); }
.hero-media { position: relative; min-height: 600px; overflow: hidden; background: #dfe6e3; }
.hero-media > img { width: 100%; height: 100%; filter: saturate(.72) contrast(.94); }
.hero-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(17,25,24,.08), transparent 38%); pointer-events: none; }
.signal-panel { position: absolute; z-index: 2; right: 0; bottom: 0; width: min(660px, 88%); padding: 20px 24px 18px; background: rgba(7, 32, 29, .9); color: white; backdrop-filter: blur(16px); }
.signal-head, .signal-meta { display: flex; justify-content: space-between; align-items: center; font: 10px/1.3 var(--mono); letter-spacing: 0; text-transform: uppercase; }
.signal-head b { color: #8fe0c6; font-weight: 400; }
.wave { display: block; width: 100%; height: 58px; overflow: visible; }
.wave path { fill: none; stroke-width: 2; vector-effect: non-scaling-stroke; stroke-dasharray: 1200; stroke-dashoffset: 1200; animation: draw-wave 3s linear infinite; }
.wave-fetal path { stroke: #8fe0c6; }
.wave-ecg path { stroke: #ff817a; animation-delay: .35s; }
.signal-meta { color: rgba(255,255,255,.58); }
.hero-foot { grid-column: 1 / -1; display: flex; justify-content: space-between; align-items: center; gap: 28px; padding: 18px var(--gutter); border-top: 1px solid var(--line); font-size: 13px; }
.hero-foot p { margin: 0; color: var(--muted); }
.hero-facts { display: flex; gap: clamp(16px, 3vw, 48px); }
.hero-facts span { white-space: nowrap; }
.hero-facts b { margin-right: 8px; color: var(--signal); font: 11px var(--mono); }

.proof-strip { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--line); background: white; }
.proof-strip div { min-height: 140px; padding: 26px var(--gutter); border-right: 1px solid var(--line); }
.proof-strip div:nth-child(4) { border-right: 0; }
.proof-strip span { display: block; color: var(--muted); font-size: 12px; }
.proof-strip strong { display: block; margin-top: 22px; font-size: clamp(20px, 2vw, 32px); font-weight: 400; }
.proof-strip > p { grid-column: 1 / -1; margin: 0; padding: 8px var(--gutter); border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }

.flow-section, .evidence-section { padding: clamp(80px, 10vw, 150px) var(--gutter); }
.section-head { display: grid; grid-template-columns: 3fr 5fr 4fr; gap: 28px; align-items: start; margin-bottom: 76px; padding-top: 14px; border-top: 2px solid var(--ink); }
.section-head h2, .evidence-intro h2, .about-copy h2, .contact-section h2 { margin: 0; font-size: clamp(34px, 4.2vw, 66px); font-weight: 300; line-height: 1.18; letter-spacing: 0; }
.section-head > p:last-child { color: var(--muted); }
.flow-track { position: relative; display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.flow-line { position: absolute; top: 17px; left: 0; right: 0; height: 1px; background: var(--line); }
.flow-line i { display: block; width: 20%; height: 2px; background: var(--signal); animation: flow 5s ease-in-out infinite; }
.flow-track article { position: relative; padding-top: 56px; }
.flow-track article::before { content: ""; position: absolute; top: 10px; left: 0; width: 15px; height: 15px; border: 4px solid var(--paper); background: var(--teal); outline: 1px solid var(--teal); }
.flow-track b { color: var(--signal); font: 11px var(--mono); }
.flow-track h3 { margin: 10px 0 8px; font-size: 20px; font-weight: 500; }
.flow-track p { max-width: 22ch; color: var(--muted); font-size: 14px; }

.solution-switcher { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: white; }
.solution-tabs { display: grid; grid-template-columns: 1fr 1fr; }
.solution-tabs button { padding: 24px var(--gutter); border: 0; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: white; color: var(--muted); text-align: left; font-size: clamp(18px, 2vw, 28px); cursor: pointer; }
.solution-tabs button:last-child { border-right: 0; }
.solution-tabs button[aria-selected="true"] { background: var(--teal-dark); color: white; }
.solution-tabs span { margin-right: 18px; color: var(--signal); font: 11px var(--mono); }
.solution-panel { display: grid; grid-template-columns: 7fr 5fr; min-height: 670px; }
.solution-image { position: relative; min-height: 560px; overflow: hidden; }
.solution-image img { width: 100%; height: 100%; filter: saturate(.72); }
.solution-image::after { content: ""; position: absolute; inset: 0; border-right: 1px solid var(--line); pointer-events: none; }
.image-caption { position: absolute; left: 0; bottom: 0; padding: 12px 18px; background: var(--paper); font: 10px var(--mono); letter-spacing: 0; }
.solution-copy { display: flex; flex-direction: column; justify-content: center; padding: clamp(48px, 7vw, 112px) var(--gutter); }
.solution-copy h2 { margin: 24px 0; font-size: clamp(32px, 3.5vw, 54px); font-weight: 300; line-height: 1.26; }
.solution-copy > p:not(.meta-label) { color: var(--muted); }
.solution-copy dl { margin: 28px 0 34px; border-top: 1px solid var(--line); }
.solution-copy dl div { display: grid; grid-template-columns: 90px 1fr; gap: 18px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.solution-copy dt { font-weight: 500; }
.solution-copy dd { margin: 0; color: var(--muted); }
.solution-copy .text-link { width: max-content; }

.network-section { display: grid; grid-template-columns: 4fr 8fr; gap: clamp(48px, 8vw, 132px); padding: clamp(80px, 10vw, 150px) var(--gutter); border-bottom: 1px solid var(--line); background: #eef3f0; }
.network-intro { align-self: start; }
.network-intro h2 { margin: 28px 0; font-size: clamp(34px, 4.2vw, 66px); font-weight: 300; line-height: 1.18; }
.network-intro > p:last-child { max-width: 42ch; color: var(--muted); }
.network-list { border-top: 1px solid var(--ink); }
.network-list article { display: grid; grid-template-columns: 112px minmax(0, 1fr) auto; column-gap: 24px; padding: 24px 0 28px; border-bottom: 1px solid var(--line); }
.network-list article header { grid-row: 1 / span 4; }
.network-list article header span { display: block; color: var(--signal); font: 11px var(--mono); }
.network-list article header p { margin: 12px 0 0; color: var(--teal); font: 10px/1.4 var(--mono); letter-spacing: 0; overflow-wrap: anywhere; }
.network-list h3 { margin: 0 0 6px; font-size: 24px; font-weight: 500; }
.network-list article > p { margin: 0; color: var(--muted); }
.network-list ul { display: flex; flex-wrap: wrap; gap: 8px 24px; margin: 18px 0 0; padding: 0; list-style: none; color: var(--muted); font-size: 13px; }
.network-list li::before { content: "—"; margin-right: 7px; color: var(--signal); }
.network-list article > b { grid-column: 3; grid-row: 2; align-self: start; color: var(--signal); font: 10px var(--mono); font-weight: 400; white-space: nowrap; }

.platform-section { padding: clamp(80px, 10vw, 150px) var(--gutter); background: var(--teal-dark); color: white; }
.section-head-light { border-color: rgba(255,255,255,.55); }
.section-head-light .section-index { color: #8fe0c6; }
.section-head-light > p:last-child { color: rgba(255,255,255,.64); }
.platform-demo { display: grid; grid-template-columns: 220px 1fr; min-height: 560px; border: 1px solid rgba(255,255,255,.26); background: #f7f9f8; color: var(--ink); }
.demo-nav { padding: 18px 12px; border-right: 1px solid var(--line); background: #eaf0ed; }
.demo-logo { display: flex; align-items: center; gap: 10px; padding: 12px 10px 24px; }
.demo-logo span { width: 18px; height: 18px; border: 5px solid var(--teal); border-right-color: var(--signal); }
.demo-nav button { display: flex; align-items: center; width: 100%; gap: 10px; margin: 4px 0; padding: 12px 10px; border: 0; background: transparent; color: var(--muted); text-align: left; font-size: 13px; }
.demo-nav button, .task, .demo-toolbar button { cursor: pointer; }
.demo-nav button:hover, .task:hover, .demo-toolbar button:hover { background: #f1f5f3; color: var(--ink); }
.demo-nav button.is-current { background: white; color: var(--ink); }
.demo-nav button i { width: 7px; height: 7px; background: var(--line); }
.demo-nav button.is-current i { background: var(--signal); }
.demo-nav button em { margin-left: auto; color: var(--signal); font: normal 11px var(--mono); }
.demo-main { min-width: 0; }
.demo-toolbar { display: flex; justify-content: space-between; align-items: center; min-height: 72px; padding: 12px 24px; border-bottom: 1px solid var(--line); }
.demo-toolbar b, .demo-toolbar span { display: block; }
.demo-toolbar span { color: var(--muted); font-size: 11px; }
.demo-toolbar button { padding: 8px 18px; border: 1px solid var(--line); background: white; }
.demo-body { display: grid; grid-template-columns: minmax(210px, 28%) 1fr; min-height: 486px; }
.task-list { border-right: 1px solid var(--line); }
.task { display: flex; justify-content: space-between; width: 100%; padding: 18px; border: 0; border-bottom: 1px solid var(--line); background: white; text-align: left; }
.task.is-selected { border-left: 3px solid var(--signal); background: #edf5f2; }
.task b, .task small { display: block; }
.task small { margin-top: 5px; color: var(--muted); }
.task em { color: var(--muted); font: normal 11px var(--mono); }
.wave-report { min-width: 0; padding: 24px; }
.report-head { display: flex; justify-content: space-between; }
.report-head b { color: var(--signal); font-size: 12px; }
.paper-grid { margin: 24px 0; padding: 20px; background-color: white; background-image: linear-gradient(rgba(239,91,85,.1) 1px, transparent 1px), linear-gradient(90deg, rgba(239,91,85,.1) 1px, transparent 1px); background-size: 14px 14px; }
.paper-grid svg { width: 100%; }
.paper-grid path { fill: none; stroke: var(--teal); stroke-width: 2; vector-effect: non-scaling-stroke; }
.paper-grid .ecg-path { stroke: var(--signal); }
.report-metrics { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.report-metrics span { padding: 14px 8px; border-right: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.report-metrics span:last-child { border-right: 0; }
.report-metrics b { display: block; color: var(--ink); }

.evidence-section { display: grid; grid-template-columns: 5fr 7fr; gap: clamp(52px, 8vw, 130px); }
.evidence-intro { position: sticky; top: 112px; align-self: start; }
.evidence-intro h2 { margin: 28px 0; }
.evidence-intro > p:last-child { max-width: 42ch; color: var(--muted); }
.evidence-list article { display: grid; grid-template-columns: 90px 1fr auto; gap: 24px; align-items: start; padding: 28px 0; border-top: 1px solid var(--line); }
.evidence-list article:last-child { border-bottom: 1px solid var(--line); }
.evidence-list article > span { color: var(--teal); font: 11px var(--mono); }
.evidence-list h3 { margin-bottom: 6px; font-size: 22px; font-weight: 500; }
.evidence-list p { margin-bottom: 0; color: var(--muted); }
.evidence-list article > b { color: var(--signal); font: 11px var(--mono); }

.about-section { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); background: white; }
.about-image { min-height: 720px; }
.about-image img { width: 100%; height: 100%; filter: saturate(.55); }
.about-copy { padding: clamp(70px, 9vw, 140px) var(--gutter); }
.about-copy h2 { margin: 28px 0; }
.about-copy > p:not(.section-index) { color: var(--muted); }
.about-copy ol { margin: 50px 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.about-copy li { display: grid; grid-template-columns: 120px 1fr; gap: 20px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.about-copy time { color: var(--teal); font: 11px var(--mono); }

.contact-section { display: grid; grid-template-columns: 5fr 7fr; gap: 40px; padding: clamp(80px, 10vw, 150px) var(--gutter); background: var(--signal); color: #171515; }
.contact-section .section-index { color: #171515; }
.contact-options a { display: grid; grid-template-columns: 1fr auto 22px; gap: 24px; align-items: center; padding: 22px 0; border-top: 1px solid rgba(0,0,0,.36); }
.contact-options a:last-of-type { border-bottom: 1px solid rgba(0,0,0,.36); }
.contact-options a span { font-size: 13px; }
.contact-options a b { font-size: clamp(18px, 2vw, 28px); font-weight: 400; overflow-wrap: anywhere; }
.contact-options a i { font-style: normal; }
.contact-options p { margin-top: 18px; font-size: 11px; }

.site-footer { display: grid; grid-template-columns: 1fr auto 1fr; align-items: end; gap: 24px; padding: 28px var(--gutter); background: var(--ink); color: rgba(255,255,255,.68); font-size: 11px; }
.site-footer p { margin: 0; }
.site-footer p:last-child { justify-self: end; }
.footer-brand b { color: white; }
.footer-brand small { color: rgba(255,255,255,.5); }

.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .55s ease, transform .55s ease; }
.js .reveal.is-visible { opacity: 1; transform: none; }
@keyframes draw-wave { 0% { stroke-dashoffset: 1200; } 58%, 100% { stroke-dashoffset: 0; } }
@keyframes flow { 0%, 100% { transform: translateX(0); } 50% { transform: translateX(400%); } }

@media (max-width: 1050px) {
  .site-header { grid-template-columns: 1fr auto; }
  .desktop-nav, .header-cta { display: none; }
  .menu-button { display: block; }
  .hero { grid-template-columns: 1fr; }
  .hero-copy { min-height: 620px; }
  .hero-media { min-height: 600px; }
  .section-head { grid-template-columns: 1fr 2fr; }
  .section-head > p:last-child { grid-column: 2; }
  .solution-panel { grid-template-columns: 1fr; }
  .solution-image { min-height: 520px; }
  .network-section { grid-template-columns: 1fr; }
  .evidence-section { grid-template-columns: 1fr; }
  .evidence-intro { position: static; }
  .platform-demo { grid-template-columns: 180px 1fr; }
  .site-footer { grid-template-columns: 1fr 1fr; }
  .site-footer > p:nth-child(2) { display: none; }
}

@media (max-width: 720px) {
  .site-header { min-height: 64px; }
  .mobile-nav { top: 64px; }
  .hero { min-height: auto; }
  .hero-copy { min-height: auto; padding-top: 72px; }
  .hero h1 { font-size: clamp(48px, 14vw, 72px); }
  .hero-actions { align-items: flex-start; flex-direction: column; }
  .hero-media { min-height: 500px; }
  .signal-panel { width: calc(100% - 20px); padding: 16px; }
  .hero-foot { align-items: flex-start; flex-direction: column; }
  .hero-facts { display: grid; grid-template-columns: 1fr 1fr; }
  .proof-strip { grid-template-columns: 1fr 1fr; }
  .proof-strip div { min-height: 112px; border-bottom: 1px solid var(--line); }
  .proof-strip div:nth-child(2) { border-right: 0; }
  .section-head { grid-template-columns: 1fr; margin-bottom: 48px; }
  .section-head > p:last-child { grid-column: auto; }
  .flow-track { grid-template-columns: 1fr; padding-left: 28px; }
  .flow-line { top: 0; left: 7px; right: auto; bottom: 0; width: 1px; height: auto; }
  .flow-line i { width: 2px; height: 20%; animation-name: flow-mobile; }
  .flow-track article { padding-top: 0; padding-bottom: 28px; }
  .flow-track article::before { top: 5px; left: -28px; }
  .flow-track p { max-width: none; }
  .solution-tabs button { padding: 18px; font-size: 16px; }
  .solution-tabs button span { display: block; margin-bottom: 4px; }
  .solution-image { min-height: 420px; }
  .network-list article { grid-template-columns: 72px minmax(0, 1fr); column-gap: 16px; }
  .network-list article header { grid-row: 1 / span 4; }
  .network-list article > b { grid-column: 2; grid-row: auto; margin-top: 14px; }
  .platform-demo { grid-template-columns: 1fr; min-height: auto; }
  .demo-nav { display: grid; grid-template-columns: repeat(2, 1fr); border-right: 0; border-bottom: 1px solid var(--line); }
  .demo-logo { grid-column: 1 / -1; }
  .demo-body { grid-template-columns: 1fr; }
  .task-list { display: grid; grid-template-columns: repeat(3, minmax(190px, 1fr)); overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .report-metrics { grid-template-columns: 1fr; }
  .report-metrics span { border-right: 0; border-bottom: 1px solid var(--line); }
  .evidence-list article { grid-template-columns: 1fr auto; }
  .evidence-list article div { grid-column: 1 / -1; grid-row: 2; }
  .about-section { grid-template-columns: 1fr; }
  .about-image { min-height: 420px; }
  .contact-section { grid-template-columns: 1fr; }
  .contact-options a { grid-template-columns: 1fr 20px; }
  .contact-options a span { grid-column: 1 / -1; }
  .contact-options a i { grid-column: 2; grid-row: 2; }
  .site-footer { grid-template-columns: 1fr; }
  .site-footer p:last-child { justify-self: start; }
}

@keyframes flow-mobile { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(400%); } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .wave path, .flow-line i { animation: none; stroke-dashoffset: 0; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* Visual emphasis pass: larger type and a stronger clinical signal hierarchy. */
body { font-size: 18px; line-height: 1.72; }
.site-header { min-height: 94px; background: rgba(245, 247, 246, .97); }
.brand { gap: 14px; }
.brand b { font-size: 20px; font-weight: 650; }
.brand small { margin-top: 5px; font-size: 12px; }
.desktop-nav { gap: clamp(24px, 3vw, 50px); font-size: 18px; font-weight: 500; }
.header-cta { font-size: 18px; font-weight: 600; }
.hero { min-height: calc(100svh - 94px); }
.hero-copy { position: relative; overflow: hidden; padding: clamp(64px, 8vw, 132px) var(--gutter) 64px; background: var(--teal-dark); color: white; }
.hero-copy::before { content: "01"; position: absolute; right: -14px; top: 12%; color: rgba(143, 224, 198, .08); font: 300 clamp(180px, 26vw, 380px)/.8 var(--mono); pointer-events: none; }
.hero-index { position: relative; color: #8fe0c6; font-size: 13px; }
.hero h1 { position: relative; max-width: 8ch; margin: 34px 0 38px; font-size: clamp(68px, 7.7vw, 132px); line-height: .96; letter-spacing: 0; }
.hero h1 span { color: #ff817a; }
.hero-lede { position: relative; max-width: 30ch; color: rgba(255, 255, 255, .78); font-size: clamp(19px, 1.55vw, 25px); line-height: 1.65; }
.hero-actions { position: relative; margin-top: 34px; }
.button { min-width: 210px; padding: 17px 20px; font-size: 16px; }
.button-primary { border-color: #8fe0c6; background: #8fe0c6; color: var(--teal-dark); }
.button-primary:hover { border-color: var(--signal); background: var(--signal); color: #171515; }
.hero-copy .text-link { color: white; border-color: rgba(255, 255, 255, .7); font-size: 16px; }
.hero-media { min-height: 680px; }
.hero-media > img { filter: saturate(.82) contrast(1.04); }
.signal-panel { width: min(720px, 92%); padding: 25px 30px 22px; }
.signal-head, .signal-meta { font-size: 12px; }
.wave { height: 68px; }
.hero-foot { min-height: 80px; padding: 22px var(--gutter); background: var(--ink); color: white; border-top-color: rgba(255,255,255,.14); font-size: 18px; font-weight: 500; }
.hero-foot p { color: rgba(255,255,255,.82); }
.hero-facts { gap: clamp(22px, 3.4vw, 58px); }
.hero-facts b { margin-right: 10px; font-size: 14px; }
.proof-strip div { min-height: 166px; padding-top: 32px; padding-bottom: 30px; }
.proof-strip strong { margin-top: 24px; font-size: clamp(34px, 2.7vw, 48px); line-height: 1.18; }
.proof-strip span { font-size: 17px; font-weight: 500; }
.proof-strip > p { padding-top: 11px; padding-bottom: 11px; font-size: 15px; line-height: 1.55; }
.section-head h2, .evidence-intro h2, .about-copy h2, .contact-section h2, .network-intro h2 { font-size: clamp(42px, 5vw, 78px); line-height: 1.1; }
.section-head > p:last-child, .network-intro > p:last-child, .evidence-intro > p:last-child, .about-copy > p:not(.section-index) { max-width: 44ch; color: var(--muted); font-size: 20px; line-height: 1.72; }
.section-index, .meta-label { font-size: 13px; }
.flow-track { gap: clamp(24px, 2.4vw, 42px); }
.flow-track article { padding-top: 64px; }
.flow-track b { font-size: 14px; font-weight: 600; }
.flow-track h3 { margin: 12px 0 12px; font-size: clamp(28px, 2vw, 32px); line-height: 1.25; }
.flow-track p { max-width: 23ch; font-size: 19px; line-height: 1.68; }
.solution-tabs button { padding: 30px var(--gutter); font-size: clamp(22px, 2.4vw, 34px); }
.solution-tabs span { font-size: 13px; }
.solution-panel { min-height: 740px; }
.solution-image { min-height: 620px; }
.solution-copy h2 { margin: 28px 0; font-size: clamp(40px, 4.2vw, 64px); line-height: 1.14; }
.solution-copy > p:not(.meta-label), .solution-copy dd { font-size: 18px; }
.solution-copy dl div { padding: 17px 0; }
.solution-copy dt { font-size: 17px; }
.network-list h3 { font-size: 30px; }
.network-list article > p { font-size: 18px; }
.network-list ul { font-size: 16px; }
.network-list article > b { font-size: 12px; }
.platform-section .section-head h2 { color: #fff; }
.platform-section .section-head > p:last-child { font-size: 18px; }
.demo-toolbar b { font-size: 17px; }
.demo-toolbar span, .task small { font-size: 13px; }
.task b { font-size: 16px; }
.report-head { font-size: 16px; }
.report-head b { font-size: 14px; }
.report-metrics span { font-size: 14px; }
.evidence-list h3 { font-size: 26px; }
.evidence-list p { font-size: 17px; }
.about-copy li { font-size: 17px; }
.contact-section h2 { font-size: clamp(48px, 5.8vw, 86px); }
.contact-options a span { font-size: 16px; }
.contact-options a b { font-size: clamp(22px, 2.5vw, 34px); }
.contact-options p { font-size: 13px; }

@media (max-width: 1050px) {
  .hero { min-height: auto; }
  .hero-copy { min-height: 690px; }
  .hero-media { min-height: 650px; }
}

@media (max-width: 720px) {
  body { font-size: 17px; }
  .mobile-only { display: block; }
  .site-header { min-height: 70px; }
  .brand { gap: 11px; }
  .brand b { font-size: 17px; }
  .brand small { margin-top: 3px; font-size: 9px; }
  .mobile-nav { inset: 70px 0 0; padding: 34px var(--gutter); }
  .mobile-nav a { padding: 20px 0; font-size: 26px; }
  .hero-copy { min-height: 650px; padding-top: 78px; }
  .hero h1 { max-width: none; margin: 28px 0 30px; font-size: clamp(58px, 16vw, 82px); }
  .hero-lede { max-width: 29ch; font-size: 18px; }
  .hero-media { min-height: 520px; }
  .signal-panel { width: calc(100% - 16px); padding: 17px 16px 15px; }
  .wave { height: 54px; }
  .hero-foot { min-height: 0; font-size: 16px; line-height: 1.6; }
  .hero-facts { width: 100%; gap: 12px 22px; flex-wrap: wrap; }
  .hero-facts b { font-size: 12px; }
  .proof-strip strong { font-size: 28px; }
  .proof-strip span { font-size: 15px; }
  .proof-strip > p { font-size: 13px; }
  .section-head h2, .evidence-intro h2, .about-copy h2, .network-intro h2 { font-size: clamp(42px, 12vw, 60px); }
  .section-head > p:last-child, .network-intro > p:last-child, .evidence-intro > p:last-child, .about-copy > p:not(.section-index) { font-size: 18px; line-height: 1.72; }
  .flow-track article { padding: 0 0 34px; }
  .flow-track b { font-size: 13px; }
  .flow-track h3 { margin-bottom: 9px; font-size: 25px; }
  .flow-track p { font-size: 17px; line-height: 1.66; }
  .solution-tabs button { padding: 22px 18px; font-size: 20px; }
  .solution-panel { min-height: auto; }
  .solution-image { min-height: 430px; }
  .solution-copy h2 { font-size: clamp(39px, 10vw, 54px); }
  .solution-copy > p:not(.meta-label), .solution-copy dd { font-size: 17px; }
  .network-list h3 { font-size: 25px; }
  .network-list article > p { font-size: 17px; }
  .network-list ul { font-size: 15px; }
  .platform-section .section-head > p:last-child { font-size: 17px; }
  .evidence-list h3 { font-size: 23px; }
  .evidence-list p { font-size: 16px; }
  .contact-section h2 { font-size: clamp(48px, 13vw, 66px); }
}