:root {
  --action-blue: #0066cc;
  --action-blue-hover: #0071e3;
  --action-blue-dark: #004f9f;
  --glacier: #e8edf3;
  --paper: #f5f5f7;
  --canvas: #ffffff;
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --line: #d2d2d7;
  --max: 1120px;
}
html.components-pending header.global-nav, html.components-pending footer.site-footer { visibility: hidden; }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--canvas);
  font: 400 17px/1.47 -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 2px solid var(--action-blue); outline-offset: 3px; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 100; padding: 10px 16px; background: var(--action-blue); color: #fff; border-radius: 999px; }
.skip-link:focus { top: 12px; }

.global-nav { position: sticky; top: 0; z-index: 40; height: 44px; background: var(--action-blue); color: #fff; }
.nav-inner { width: min(100% - 36px, 1040px); height: 100%; margin: auto; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; }
.brand-logo { display: block; width: 28px; height: 28px; object-fit: contain; border-radius:14px;border:1px solid white; background-color: white; }
.brand-mark { display: grid; place-items: center; width: 22px; height: 22px; border: 1.5px solid currentColor; border-radius: 50%; font-size: 11px; }
.nav-links { display: flex; align-items: center; gap: 27px; font-size: 12px; }
.nav-links a { opacity: .82; }
.nav-links a:hover, .nav-links a[aria-current="page"] { opacity: 1; }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 0; border: 0; background: transparent; color: #fff; cursor: pointer; }
.menu-toggle span { display: block; width: 18px; height: 1px; margin: 5px auto; background: currentColor; transition: transform .2s; }
.subnav { position: sticky; top: 44px; z-index: 35; height: 52px; background: rgba(232, 237, 243, .88); border-bottom: 1px solid rgba(0,0,0,.08); backdrop-filter: saturate(180%) blur(18px); }
.subnav-inner { width: min(100% - 36px, var(--max)); height: 100%; margin: auto; display: flex; align-items: center; justify-content: space-between; }
.subnav-title { font-size: 21px; font-weight: 600; line-height: 1; }
.subnav-actions { display: flex; align-items: center; gap: 20px; font-size: 14px; }

.container { width: min(100% - 44px, var(--max)); margin-inline: auto; }
.narrow { width: min(100% - 44px, 820px); margin-inline: auto; }
.section { padding: 88px 0; }
.section.glacier { background: var(--glacier); }
.section.paper { background: var(--paper); }
.section.blue { background: var(--action-blue); color: #fff; }
.hero { min-height: 590px; padding: 88px 0 0; overflow: hidden; text-align: center; }
.hero.compact { min-height: 460px; padding-bottom: 72px; display: flex; align-items: center; }
.hero.blue { background: var(--action-blue); color: #fff; }
.hero.glacier { background: var(--glacier); }
.hero-label { margin: 0 0 8px; color: var(--action-blue); font-size: 18px; font-weight: 600; }
.blue .hero-label { color: #fff; opacity: .82; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 16px; font-size: 56px; font-weight: 600; line-height: 1.07; letter-spacing: 0; }
h2 { margin-bottom: 14px; font-size: 40px; font-weight: 600; line-height: 1.1; letter-spacing: 0; }
h3 { margin-bottom: 8px; font-size: 21px; font-weight: 600; line-height: 1.2; letter-spacing: 0; }
.lead { max-width: 720px; margin: 0 auto 26px; color: var(--muted); font-size: 24px; line-height: 1.36; }
.blue .lead { color: rgba(255,255,255,.84); }
.section.blue:not(.hero) .lead { display: none; }
.section-head { max-width: 760px; margin-bottom: 46px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head p { margin-bottom: 0; color: var(--muted); }
.blue .section-head p { color: rgba(255,255,255,.8); }
.eyebrow { margin-bottom: 8px; color: var(--action-blue); font-size: 14px; font-weight: 600; }
.actions { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 11px 22px; border: 1px solid var(--action-blue); border-radius: 999px; background: transparent; color: var(--action-blue); font-size: 16px; line-height: 1; cursor: pointer; transition: transform .15s, background .15s; }
.button:hover { background: rgba(0,102,204,.06); }
.button:active { transform: scale(.95); }
.button.primary { background: var(--action-blue); color: #fff; }
.button.primary:hover { background: var(--action-blue-hover); }
.blue .button.primary { background: #fff; color: var(--action-blue); border-color: #fff; }
.blue .button.secondary { color: #fff; border-color: rgba(255,255,255,.8); }
.text-link { color: var(--action-blue); }
.text-link::after { content: " ›"; }

.grid-2, .grid-3, .grid-4 { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.certificate-grid, .copyright-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.certificate-card { padding: 0; overflow: hidden; }
.certificate-image { display: block; width: 100%; padding: 0; border: 0; background: var(--paper); cursor: zoom-in; }
.certificate-image img { display: block; width: 100%; aspect-ratio: 1 / 1.28; object-fit: contain; }
.certificate-meta { padding: 20px 22px 22px; }
.certificate-meta h3 { margin-bottom: 0; font-size: 18px; }
.certificate-meta p { margin: 8px 0 0; font-size: 14px; color: var(--muted); }
.certificate-toolbar { display: flex; flex-wrap: wrap; gap: 8px; margin: -18px 0 30px; }
.filter-button { padding: 9px 16px; border: 1px solid var(--line); border-radius: 999px; background: transparent; color: var(--ink); cursor: pointer; }
.filter-button.is-active, .filter-button[aria-pressed="true"] { border-color: var(--action-blue); background: var(--action-blue); color: #fff; }
.copyright-grid { grid-template-columns: repeat(3, 1fr); }
.copyright-card { position: relative; min-height: 190px; }
.copyright-detail { width: 100%; color: inherit; font: inherit; text-align: left; cursor: zoom-in; }
.copyright-detail:hover { border-color: var(--action-blue); }
.copyright-image { display: block; margin: -26px -26px 20px; background: var(--paper); }
.copyright-image img { display: block; width: 100%; aspect-ratio: 1 / 1.35; object-fit: contain; }
.copyright-card h3 { margin: 12px 0 24px; }
.pdf-mark { display: inline-flex; align-items: center; justify-content: center; width: 48px; height: 34px; border-radius: 4px; background: #e8edf3; color: var(--action-blue); font-size: 12px; font-weight: 700; }
.lightbox[hidden] { display: none; }
.lightbox { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 30px; background: rgba(16, 20, 28, .82); }
.lightbox img { max-width: min(92vw, 1100px); max-height: 88vh; object-fit: contain; background: #fff; }
.lightbox-close { position: absolute; top: 18px; right: 22px; width: 42px; height: 42px; border: 1px solid rgba(255,255,255,.55); border-radius: 50%; background: transparent; color: #fff; font-size: 30px; line-height: 1; cursor: pointer; }
.card { padding: 26px; border: 1px solid var(--line); border-radius: 8px; background: var(--canvas); }
.card p { margin-bottom: 0; color: var(--muted); font-size: 15px; }
.card .number { display: block; margin-bottom: 18px; color: var(--action-blue); font-size: 13px; }
.card > p, .case-body > p, .process-step > p, .feature > p, .article-row > div > p, .audience > p { display: none; }
.card-link { display: block; transition: border-color .2s; }
.card-link:hover { border-color: var(--action-blue); }
.feature { padding: 22px 0; border-top: 1px solid var(--line); }
.feature:last-child { border-bottom: 1px solid var(--line); }
.feature-grid { display: grid; grid-template-columns: 220px 1fr; gap: 48px; }
.feature p { color: var(--muted); }
.split { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 72px; }
.check-list { list-style: none; margin: 26px 0; padding: 0; }
.check-list li { position: relative; padding: 12px 0 12px 30px; border-bottom: 1px solid var(--line); }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--action-blue); font-weight: 600; }

.product-visual { position: relative; min-height: 360px; overflow: hidden; border: 8px solid #36383b; border-bottom: 0; border-radius: 26px 26px 0 0; background: #fff; box-shadow: rgba(0,0,0,.18) 3px 5px 30px; text-align: left; }
.hero .product-visual { width: min(840px, 92vw); height: 350px; margin: 52px auto 0; }
.visual-bar { display: flex; align-items: center; justify-content: space-between; height: 46px; padding: 0 20px; border-bottom: 1px solid #eee; color: var(--muted); font-size: 11px; }
.visual-brand { color: var(--action-blue); font-weight: 600; }
.dashboard { display: grid; grid-template-columns: 170px 1fr; min-height: 304px; }
.dashboard-nav { padding: 22px; background: var(--paper); border-right: 1px solid #eee; }
.line { height: 9px; margin-bottom: 16px; border-radius: 5px; background: #c9dbed; }
.line.short { width: 62%; background: #8dbce6; }
.dashboard-main { padding: 28px; }
.metric-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.metric { padding: 16px; background: var(--paper); border-radius: 8px; }
.metric b { display: block; font-size: 24px; }
.metric span { color: var(--muted); font-size: 11px; }
.bar-chart { display: flex; align-items: end; gap: 12px; height: 90px; margin-top: 22px; border-bottom: 1px solid var(--line); }
.bar-chart i { flex: 1; background: var(--action-blue); border-radius: 3px 3px 0 0; }
.phone-visual { width: 260px; min-height: 440px; margin: auto; padding: 12px; border: 7px solid #35373a; border-radius: 34px; background: #fff; box-shadow: rgba(0,0,0,.18) 3px 5px 30px; }
.phone-screen { min-height: 402px; padding: 24px 16px; border-radius: 22px; background: var(--paper); }
.phone-screen .metric { margin-top: 12px; background: #fff; }
.topology { position: relative; min-height: 380px; display: grid; place-items: center; }
.hub { display: grid; place-items: center; width: 118px; height: 118px; border-radius: 50%; background: var(--action-blue); color: #fff; font-weight: 600; }
.device-node { position: absolute; width: 104px; padding: 14px 8px; border: 1px solid var(--line); border-radius: 8px; background: #fff; text-align: center; font-size: 13px; }
.device-node:nth-child(2) { top: 20px; left: 20px; }
.device-node:nth-child(3) { top: 20px; right: 20px; }
.device-node:nth-child(4) { bottom: 20px; left: 20px; }
.device-node:nth-child(5) { bottom: 20px; right: 20px; }

.audience-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.audience { padding: 42px; background: #fff; }
.audience.blue-panel { background: var(--action-blue); color: #fff; }
.audience p { color: var(--muted); }
.audience.blue-panel p { color: rgba(255,255,255,.82); }
.process { display: grid; grid-template-columns: repeat(6, 1fr); counter-reset: step; }
.process-step { position: relative; min-height: 128px; padding: 22px 18px; border-top: 3px solid var(--action-blue); }
.process-step::before { counter-increment: step; content: "0" counter(step); display: block; margin-bottom: 28px; color: var(--action-blue); font-size: 13px; }
.process-step + .process-step { border-left: 1px solid var(--line); }
.process-step p { color: var(--muted); font-size: 14px; }

.filter-bar { display: flex; gap: 8px; margin-bottom: 30px; overflow-x: auto; padding-bottom: 4px; }
.filter-button { min-width: max-content; min-height: 44px; padding: 9px 17px; border: 1px solid var(--line); border-radius: 999px; background: #fff; color: var(--ink); cursor: pointer; }
.filter-button[aria-pressed="true"] { border-color: var(--action-blue); background: var(--action-blue); color: #fff; }
.case-card { overflow: hidden; padding: 0; }
.case-card[hidden] { display: none; }
.case-card img { display: block; width: 100%; aspect-ratio: 16/10; object-fit: cover; background: var(--paper); box-shadow: rgba(0,0,0,.12) 3px 5px 30px; }
.case-body { padding: 22px; }
.case-meta { color: var(--action-blue); font-size: 13px; }
.empty-state { padding: 50px 20px; text-align: center; background: var(--paper); }
.empty-state[hidden] { display: none; }
.article-list { border-top: 1px solid var(--line); }
.article-row { display: grid; grid-template-columns: 160px 1fr auto; gap: 26px; align-items: start; padding: 22px 0; border-bottom: 1px solid var(--line); }
.article-row small { color: var(--action-blue); }
.article-row p { margin-bottom: 0; color: var(--muted); }
.article-layout { display: grid; grid-template-columns: 220px 1fr; gap: 60px; }
.article-toc { position: sticky; top: 120px; align-self: start; padding: 20px; background: var(--paper); border-radius: 8px; }
.article-toc a { display: block; padding: 8px 0; color: var(--muted); font-size: 14px; }
.prose { max-width: 720px; }
.prose h2 { margin-top: 60px; font-size: 30px; }
.prose p, .prose li { color: #3f3f42; }
.quote { margin: 36px 0; padding: 24px; border-left: 4px solid var(--action-blue); background: var(--glacier); font-size: 20px; }

.contact-switch { display: inline-flex; padding: 4px; border: 1px solid var(--line); border-radius: 999px; background: var(--paper); }
.mode-button { min-height: 42px; padding: 8px 18px; border: 0; border-radius: 999px; background: transparent; cursor: pointer; }
.mode-button[aria-pressed="true"] { background: var(--action-blue); color: #fff; }
.contact-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 64px; align-items: start; }
.contact-layout.equal-columns { grid-template-columns: 1fr 1fr; }
.contact-info { padding: 30px; background: var(--glacier); border-radius: 8px; }
.contact-info a { color: var(--action-blue); }
.direct-contact { display: grid; grid-template-rows: repeat(2, minmax(0, 1fr)); gap: 18px; height: 100%; }
.direct-contact-item { padding: 26px 28px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); }
.direct-contact-item span { display: block; margin-bottom: 8px; color: var(--muted); font-size: 14px; }
.direct-contact-item a { color: var(--action-blue); font-size: 24px; font-weight: 600; }
.direct-contact-item p { margin: 8px 0 0; color: var(--muted); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field.full { grid-column: 1 / -1; }
.field label { display: block; margin-bottom: 7px; font-size: 14px; font-weight: 600; }
.field input, .field select, .field textarea { width: 100%; min-height: 48px; padding: 11px 13px; border: 1px solid #a8a8ad; border-radius: 8px; background: #fff; color: var(--ink); }
.field textarea { min-height: 130px; resize: vertical; }
.field-error { min-height: 20px; margin: 4px 0 0; color: #b42318; font-size: 13px; }
.form-success { padding: 32px; background: var(--glacier); border-radius: 8px; }
.form-success[hidden] { display: none; }

.site-footer { padding: 58px 0 28px; background: var(--paper); color: #424245; font-size: 13px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3,1fr); gap: 38px; }
.footer-grid h3 { font-size: 14px; }
.footer-grid a { display: block; padding: 5px 0; color: var(--muted); }
.legal { margin-top: 42px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.legal a { color: var(--muted); }
.legal a:hover { text-decoration: underline; color:#339CFF }
body { transition: opacity 160ms ease, transform 160ms ease; }
body.page-leaving { opacity: 0; transform: translateY(-4px); }
.motion-ready .reveal { opacity: 0; transform: translateY(20px); transition: opacity 620ms ease, transform 620ms ease; transition-delay: var(--reveal-delay, 0ms); }
.motion-ready .reveal.is-visible { opacity: 1; transform: none; }
.motion-ready .hero .hero-label.reveal { transform: translateY(12px); }
.motion-ready .hero h1.reveal { transform: translateY(18px); }
.motion-ready .hero .product-visual.reveal { transform: translateY(34px) scale(.98); }
.motion-ready .hero .product-visual.reveal.is-visible { animation: scene-float 6s 1.1s ease-in-out infinite; }
.motion-ready .bar-chart i { transform: scaleY(.08); transform-origin: bottom; animation: chart-grow 900ms ease forwards; }
.motion-ready .bar-chart i:nth-child(2) { animation-delay: 80ms; }
.motion-ready .bar-chart i:nth-child(3) { animation-delay: 160ms; }
.motion-ready .bar-chart i:nth-child(4) { animation-delay: 240ms; }
.motion-ready .bar-chart i:nth-child(5) { animation-delay: 320ms; }
.motion-ready .bar-chart i:nth-child(6) { animation-delay: 400ms; }
.motion-ready .phone-screen .metric { animation: task-breathe 4.8s ease-in-out infinite; }
.motion-ready .phone-screen .metric:nth-child(3) { animation-delay: 1.1s; }
.motion-ready .phone-screen .metric:nth-child(4) { animation-delay: 2.2s; }
.motion-ready .device-node { animation: node-float 5s ease-in-out infinite; }
.motion-ready .device-node:nth-child(3) { animation-delay: .7s; }
.motion-ready .device-node:nth-child(4) { animation-delay: 1.4s; }
.motion-ready .device-node:nth-child(5) { animation-delay: 2.1s; }
.process-step::after { content: ""; position: absolute; top: -3px; left: 0; right: 0; height: 3px; background: var(--action-blue); transform: scaleX(0); transform-origin: left; transition: transform 560ms ease; transition-delay: var(--reveal-delay, 0ms); }
.process-step.is-visible::after { transform: scaleX(1); }
.case-card { transition: opacity 180ms ease, transform 180ms ease, border-color 180ms ease; }
.case-card.is-filtering-out { opacity: 0; transform: translateY(8px) scale(.98); }
.case-card.is-filtering-in { animation: card-enter 360ms ease both; }

@keyframes scene-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-7px); }
}
@keyframes chart-grow {
  from { transform: scaleY(.08); opacity: .35; }
  to { transform: scaleY(1); opacity: 1; }
}
@keyframes task-breathe {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}
@keyframes node-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
@keyframes card-enter {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

@media (max-width: 1068px) {
  h1 { font-size: 44px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .certificate-grid { grid-template-columns: repeat(2, 1fr); }
  .copyright-grid { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(3, 1fr); }
  .split { gap: 42px; }
  .footer-grid { grid-template-columns: 1.2fr repeat(2,1fr); }
}

@media (max-width: 833px) {
  .menu-toggle { display: block; }
  .nav-links { position: fixed; inset: 44px 0 auto; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 18px 22px 30px; background: var(--action-blue); font-size: 17px; }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 13px 0; border-bottom: 1px solid rgba(255,255,255,.24); }
  .subnav-actions a:not(.button) { display: none; }
  .split, .contact-layout, .article-layout { grid-template-columns: 1fr; }
  .direct-contact { height: auto; grid-template-rows: none; }
  .article-toc { position: static; }
  .feature-grid { grid-template-columns: 1fr; gap: 10px; }
  .audience { padding: 30px; }
}

@media (max-width: 640px) {
  .container, .narrow { width: min(100% - 32px, var(--max)); }
  .nav-inner, .subnav-inner { width: calc(100% - 32px); }
  .subnav-title { font-size: 18px; }
  .subnav .button { padding-inline: 16px; }
  .section { padding: 62px 0; }
  .hero { min-height: 510px; padding-top: 62px; }
  .hero.compact { min-height: 390px; padding-bottom: 54px; }
  h1 { font-size: 34px; }
  h2 { font-size: 30px; }
  .lead { font-size: 20px; }
  .grid-2, .grid-3, .grid-4, .audience-grid, .form-grid { grid-template-columns: 1fr; }
  .certificate-grid, .copyright-grid { grid-template-columns: 1fr; }
  .process { grid-template-columns: 1fr; }
  .process-step + .process-step { border-left: 0; }
  .hero .product-visual { height: 270px; margin-top: 42px; border-width: 7px; border-radius: 20px 20px 0 0; }
  .dashboard { grid-template-columns: 78px 1fr; }
  .dashboard-nav { padding: 14px 10px; }
  .dashboard-main { padding: 16px; }
  .metric { padding: 10px; }
  .metric b { font-size: 17px; }
  .bar-chart { height: 55px; }
  .article-row { grid-template-columns: 1fr; gap: 8px; }
  .contact-info { padding: 22px; }
  .field.full { grid-column: auto; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > :first-child { grid-column: 1 / -1; }
}

@media (max-width: 419px) {
  h1 { font-size: 28px; }
  .button { padding-inline: 17px; font-size: 15px; }
  .subnav-title { max-width: 190px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-grid > :first-child { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; transition-delay: 0ms !important; }
  body, body.page-leaving, .motion-ready .reveal, .motion-ready .reveal.is-visible { opacity: 1; transform: none; }
  .process-step::after { transform: scaleX(1); }
}