:root {
  /* Neutral product surfaces, with the original site's blue for actions. */
  --ink: #1f232a;
  --body: #444b55;
  --muted: #606975;
  --accent: #1f40e6;
  --accent-hover: #1732b7;
  --charcoal: #22262d;
  --line: #dfe3e8;
  --line-strong: #c8ced7;
  --paper: #fbfbfc;
  --surface: #ffffff;
  --tint: #f2f4f7;
  --accent-soft: #edf2ff;
  --accent-line: #d4defa;
  --selection: #dde6ff;
  --on-dark: #f7f8fa;
  --on-dark-muted: #c5cad2;
  --dark-accent: #abc2ff;
  --dark-line: #69727f;
  --dark-hover: #343b45;
  --diagram-line: #a0abba;
  --focus: #5076ed;
  --warning-bg: #fff4d8;
  --warning-line: #e3ce91;
  --warning-text: #6b5216;
  --error: #b42318;
  --input-line: #8d97a6;
  --neutral-strong: #4c596b;
  --hero-from: #fafbfc;
  --hero-to: #edf0f4;
  --image-glow: #edf0f4;
  --shadow: #606b7e;
  --shadow-soft: #1f293710;
  --radius: 18px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
body { margin: 0; color: var(--body); background: var(--paper); font: 16px/1.8 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button, a, input, select, textarea, summary { -webkit-tap-highlight-color: transparent; }
button, summary { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .6; }
img, picture { display: block; max-width: 100%; height: auto; }
figure { margin: 0; }
button, input, textarea, select { border-radius: 0; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { color: var(--ink); line-height: 1.35; font-weight: 650; letter-spacing: -.045em; }
h1 { font-size: clamp(34px, 4.1vw, 58px); }
h2 { font-size: clamp(27px, 2.8vw, 38px); }
h3 { font-size: 23px; letter-spacing: -.025em; }
p + p { margin-top: 16px; }
h2 + p, h3 + p { margin-top: 16px; }
::selection { color: var(--ink); background: var(--selection); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 5px; }
[hidden] { display: none !important; }
.container { width: min(1200px, calc(100% - 96px)); margin-inline: auto; }
.section { padding-block: 92px; }
.section.compact { padding-top: 12px; }
.what-is { padding-bottom: 0; }
.what-is .narrow p + p { margin-top: 14px; }
.section-tint { background: var(--tint); }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 40px; margin-bottom: 42px; }
.section-description { max-width: 420px; font-size: 16px; }
.section-description + .text-link { display: inline-block; margin-top: 17px; }
.eyebrow { display: flex; align-items: center; gap: 9px; margin-bottom: 18px; color: var(--accent); font-size: 12px; font-weight: 650; letter-spacing: .09em; }
.lead { margin-top: 24px; font-size: 18px; line-height: 1.95; color: var(--muted); }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.tiny-dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); flex: 0 0 auto; }
.nb { white-space: nowrap; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 22px; min-height: 48px; padding: 11px 24px; border: 1px solid var(--accent); border-radius: 6px; background: var(--accent); color: var(--surface); font-size: 14px; font-weight: 600; line-height: 1.6; transition: background .18s, border-color .18s, transform .18s; }
.button:hover { background: var(--accent-hover); border-color: var(--accent-hover); transform: translateY(-1px); }
.button.secondary { color: var(--ink); border-color: var(--line-strong); background: transparent; }
.button.secondary:hover { border-color: var(--accent); background: var(--accent-soft); }
.button.text { padding-inline: 0; border-color: transparent; background: transparent; color: var(--ink); }
.button.text:hover, .text-link:hover { color: var(--accent); }
.button-row { display: flex; align-items: center; flex-wrap: wrap; gap: 22px; margin-top: 32px; }
.text-link { color: var(--accent); font-size: 14px; font-weight: 650; }
.sr-only, .skip-link:not(:focus) { 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:focus { position: fixed; top: 12px; left: 12px; z-index: 100; padding: 12px 22px; color: var(--surface); background: var(--charcoal); }
.site-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid var(--line); background: rgba(251, 251, 252, .97); }
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 90px; gap: 30px; }
.brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; color: var(--ink); line-height: 1.2; }
.brand strong { font-size: 25px; font-weight: 750; letter-spacing: -.06em; }
.brand sup { font-size: 10px; vertical-align: super; margin-left: 2px; }
.brand small { display: block; margin-top: 4px; font-size: 9px; letter-spacing: .28em; }
.site-nav { display: flex; align-items: center; gap: 31px; color: var(--body); font-size: 14px; font-weight: 550; }
.site-nav > a { padding: 13px 0; white-space: nowrap; }
.site-nav > a[aria-current], .site-nav > a:hover { color: var(--accent); }
.site-nav > a[aria-current]:not(.nav-cta) { box-shadow: inset 0 -2px var(--accent); }
.site-nav .nav-cta { padding: 9px 17px; margin-left: 12px; border: 1px solid var(--line-strong); border-radius: 5px; }
.nav-cta span { margin-left: 17px; }
.menu-toggle { display: none; }
.hero { padding-top: 72px; background: linear-gradient(125deg, var(--hero-from) 25%, var(--hero-to) 100%); border-bottom: 1px solid var(--line); }
.hero-grid { display: grid; grid-template-columns: 1.02fr 1fr; gap: 40px; align-items: center; }
.hero h1 { font-size: clamp(34px, 3.65vw, 54px); line-height: 1.48; }
.hero h1 span { color: var(--accent); }
.hero .lead { font-size: 16px; }
.hero-proof { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 30px; color: var(--muted); font-size: 11px; }
.hero-proof span::before { content: "✓"; color: var(--accent); margin-right: 5px; }
.hero-visual { padding: 24px; border: 1px solid var(--line); border-radius: 22px; background: radial-gradient(ellipse at center, var(--image-glow), var(--surface) 75%); box-shadow: 0 24px 64px -42px var(--shadow); }
.visual-topline, .visual-bottomline { display: flex; justify-content: space-between; align-items: center; gap: 12px; font-size: 10px; }
.visual-code { color: var(--muted); font-size: 9px; letter-spacing: .07em; }
.schematic-label { display: inline-flex; align-items: center; gap: 7px; padding: 4px 9px; border: 1px solid var(--accent-line); border-radius: 20px; background: var(--accent-soft); color: var(--accent); }
.schematic-label i { width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }
.client-nodes { display: flex; justify-content: center; gap: 14px; margin: 30px 14px 0; }
.client-nodes > span { position: relative; flex: 1; max-width: 140px; padding: 12px 7px; text-align: center; border: 1px solid var(--line); border-radius: 7px; background: var(--surface); box-shadow: 0 5px 14px var(--shadow-soft); }
.client-nodes b, .client-nodes small { display: block; }
.client-nodes b { font-size: 12px; color: var(--ink); }
.client-nodes small { font-size: 9px; color: var(--muted); margin-top: 2px; }
.client-nodes > span::after { content: ""; position: absolute; top: 100%; left: 50%; height: 21px; border-left: 1px dashed var(--diagram-line); }
.network-line { position: relative; width: 68%; margin: 20px auto 0; height: 48px; border-top: 1px dashed var(--diagram-line); text-align: center; }
.network-line::before { content: ""; position: absolute; left: 50%; top: 0; height: 65px; border-left: 1px dashed var(--diagram-line); }
.network-line span { position: relative; top: 9px; padding: 0 8px; font-size: 9px; background: var(--tint); color: var(--muted); }
.hero-device { position: relative; margin: 4px 0 2px; }
.hero-device img { width: 100%; }
.hero-device figcaption { text-align: center; font-size: 9px; color: var(--muted); margin-top: 6px; }
.visual-bottomline { margin-top: 24px; padding-top: 14px; border-top: 1px solid var(--line); color: var(--muted); }
.visual-bottomline b { color: var(--accent); font-weight: 500; }
.stat-strip { display: grid; grid-template-columns: repeat(4, 1fr); padding-block: 32px; margin-top: 64px; border-top: 1px solid var(--line); }
.stat-strip > div { padding-inline: 30px; border-left: 1px solid var(--line); }
.stat-strip > div:first-child { padding-left: 0; border: 0; }
.stat-strip strong { color: var(--ink); font-size: 27px; font-weight: 550; letter-spacing: -.04em; }
.stat-strip strong span { margin-left: 6px; font-size: 17px; }
.stat-strip strong span.nb { margin-left: 0; font-size: inherit; }
.stat-strip p { color: var(--muted); margin-top: 4px; font-size: 12px; }
.product-grid, .two-col { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.product-card { padding: 32px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.product-meta { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 20px; }
.product-meta .eyebrow { margin: 0; font-size: 11px; }
.badge { display: inline-flex; align-items: center; padding: 3px 9px; border: 1px solid var(--accent-line); border-radius: 30px; background: var(--accent-soft); color: var(--accent); font-size: 10px; line-height: 1.65; white-space: nowrap; }
.badge::before { content: ""; width: 4px; height: 4px; margin-right: 5px; background: currentColor; border-radius: 50%; }
.badge.order { background: var(--tint); color: var(--neutral-strong); border-color: var(--accent-line); }
.badge.maintenance { background: var(--warning-bg); border-color: var(--warning-line); color: var(--warning-text); }
.badge.ended { background: var(--tint); border-color: var(--line); color: var(--muted); }
.product-card h3 { font-size: 30px; }
.product-card h3 span { color: var(--accent); }
.product-card h3 + p { font-size: 14px; margin-top: 9px; }
.product-image { display: block; margin: 20px -16px 12px; padding: 30px 6px; background: radial-gradient(ellipse at center, var(--image-glow), var(--surface) 75%); }
.product-image img { width: 100%; transition: transform .2s; }
.product-image:hover img { transform: translateY(-3px); }
.check-list { list-style: none; margin: 0; padding: 0; }
.check-list li { position: relative; padding: 5px 0 5px 22px; font-size: 14px; }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }
.card-bottom { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 24px; margin-top: 24px; border-top: 1px solid var(--line); }
.card-bottom > span { font-size: 11px; }
.card-bottom .button { min-height: 41px; padding: 8px 17px; font-size: 12px; }
.figure-note { margin-top: 18px; color: var(--muted); font-size: 11px; }
.feature-grid, .three-col { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.feature { border-top: 1px solid var(--line-strong); padding: 28px 8px 0 0; }
.feature-number { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px; margin-bottom: 24px; background: var(--accent-soft); border: 1px solid var(--accent-line); border-radius: 10px; color: var(--accent); font-size: 13px; }
.feature h3 { font-size: 23px; }
.feature p { font-size: 14px; line-height: 1.9; }
.feature-tag { display: inline-block; padding-top: 24px; color: var(--muted); font-size: 11px; }
.scenario-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.scenario-card { border: 1px solid var(--line); padding: 28px; border-radius: 10px; }
.scenario-index { display: block; margin-bottom: 22px; color: var(--muted); font-size: 37px; font-weight: 300; }
.scenario-card h3 { font-size: 20px; }
.scenario-card p { margin-bottom: 25px; font-size: 14px; }
.scenario-card > span:last-child { font-size: 11px; color: var(--muted); }
.split { display: flex; justify-content: space-between; gap: 60px; align-items: center; }
.split > div { min-width: 0; }
.lifecycle-banner { color: var(--on-dark-muted); background: var(--charcoal); }
.lifecycle-banner h2 { color: var(--on-dark); }
.lifecycle-banner .eyebrow { color: var(--dark-accent); }
.lifecycle-banner p:not(.eyebrow) { margin: 23px 0 28px; font-size: 14px; line-height: 2; }
.lifecycle-banner .button.secondary { border-color: var(--dark-line); color: var(--on-dark); }
.lifecycle-banner .button.secondary:hover { background: var(--dark-hover); }
.lifecycle-mini { flex: 0 0 40%; border-left: 1px solid var(--dark-line); }
.lifecycle-mini > div { position: relative; display: flex; align-items: center; gap: 22px; margin: 14px 0 30px; padding-left: 32px; }
.lifecycle-mini > div:last-child { margin-bottom: 14px; }
.lifecycle-mini > div::before { content: ""; position: absolute; left: -4px; top: 11px; width: 7px; height: 7px; border-radius: 50%; background: var(--dark-accent); }
.lifecycle-mini span { font-size: 11px; color: var(--on-dark-muted); }
.lifecycle-mini b { color: var(--on-dark); font-size: 17px; font-weight: 500; }
.lifecycle-mini small { font-size: 11px; margin-left: auto; }
.news-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 30px; }
.news-card { position: relative; display: block; padding: 26px 28px 48px; background: var(--tint); border: 1px solid var(--line); border-radius: 10px; transition: border-color .2s; }
.news-card:hover { border-color: var(--focus); }
.news-card > div { display: flex; justify-content: space-between; gap: 10px; color: var(--muted); font-size: 11px; margin-bottom: 25px; }
.news-card h3 { font-size: 24px; line-height: 1.6; }
.news-card p { font-size: 13px; margin-top: 14px; }
.news-arrow { position: absolute; bottom: 14px; right: 25px; font-size: 25px; color: var(--accent); }
.page-hero { padding-top: 30px; padding-bottom: 70px; }
.page-hero > .eyebrow { margin-top: 45px; }
.breadcrumbs { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 48px; font-size: 11px; color: var(--muted); }
.breadcrumbs a:hover { color: var(--accent); }
.breadcrumbs span { color: var(--diagram-line); }
.detail-hero { display: grid; grid-template-columns: 1fr 1fr; gap: 42px; align-items: center; }
.detail-hero .product-meta { justify-content: start; }
.detail-hero h1 { font-size: clamp(34px, 3.7vw, 52px); }
.detail-hero h1 em { font-style: normal; color: var(--accent); }
.detail-hero .small { margin-top: 24px; }
.detail-figure { background: var(--tint); border: 1px solid var(--line); border-radius: 18px; padding: 34px 10px 24px; }
.panel-shot + .panel-shot { margin-top: 26px; }
/* Same scale for both views: the rear photo has no rack ears, 1692 of the front's 1906 px. */
.panel-shot.rear picture { width: 88.8%; margin-inline: auto; }
.panel-shot span { display: block; margin-top: 6px; text-align: center; font-size: 10px; color: var(--muted); }
.detail-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; font-size: 11px; margin-top: 26px; }
.detail-tags span { padding: 3px 10px; border: 1px solid var(--accent-line); border-radius: 4px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); }
.spec-table { width: 100%; border-collapse: collapse; text-align: left; font-size: 13px; }
.spec-table th, .spec-table td { border-bottom: 1px solid var(--line); padding: 17px 24px; vertical-align: top; }
.spec-table thead { background: var(--accent-soft); color: var(--ink); }
.spec-table thead th { font-size: 16px; font-weight: 600; }
.spec-table tbody th { width: 24%; background: var(--tint); color: var(--body); font-weight: 500; }
.spec-table:not(.detail-spec) td { width: 38%; min-width: 220px; }
.spec-table tr:last-child > * { border-bottom: 0; }
.detail-spec th { min-width: 150px; }
.note { padding: 18px 0 0; font-size: 12px; color: var(--muted); line-height: 1.9; }
.callout { padding: 36px; border: 1px solid var(--line); border-radius: 12px; }
.card { padding: 32px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.card h2 { font-size: 26px; }
.card h3 { font-size: 22px; }
.card p { font-size: 14px; }
.card .text-link { display: inline-block; margin-top: 22px; }
.card .check-list { margin-top: 20px; }
.resource-label { display: block; color: var(--muted); font-size: 12px; margin-bottom: 22px; }
.lifecycle-track { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; background: var(--paper); }
.lifecycle-track > span { padding: 22px; color: var(--accent); background: var(--accent-soft); font-size: 15px; }
.lifecycle-track b { margin-right: 20px; font-size: 12px; color: var(--muted); }
.lifecycle-track + .note { margin-bottom: 38px; }
.legacy-card { border: 1px solid var(--line); border-radius: 12px; padding: 32px; }
.legacy-card h2 { font-size: 25px; }
.legacy-card p { margin-bottom: 24px; font-size: 14px; }
.lifecycle-dates { display: flex; gap: 25px; margin: 30px 0; padding-block: 22px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.lifecycle-dates span, .lifecycle-dates strong { display: block; }
.lifecycle-dates span { font-size: 11px; color: var(--muted); }
.lifecycle-dates strong { margin-top: 6px; color: var(--ink); font-size: 19px; font-weight: 500; }
.narrow { max-width: 840px; }
.faq-list { margin-top: 35px; }
.faq-list details { border-top: 1px solid var(--line); padding-block: 22px; }
.faq-list details:last-child { border-bottom: 1px solid var(--line); }
.faq-list summary { position: relative; padding-right: 32px; list-style: none; color: var(--ink); font-size: 17px; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 5px; top: 0; font-size: 22px; color: var(--muted); }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { margin-top: 17px; font-size: 14px; max-width: 94%; }
.process-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 26px; margin: 0; padding: 0; list-style: none; }
.process-grid li { border-top: 1px solid var(--line-strong); padding-top: 25px; }
.process-grid li > span { display: block; font-size: 35px; color: var(--muted); font-weight: 300; margin-bottom: 24px; }
.process-grid h3 { font-size: 18px; line-height: 1.6; }
.process-grid p { font-size: 13px; }
.timeline { border-top: 1px solid var(--line); }
.timeline-item { display: grid; grid-template-columns: 180px 1fr; gap: 36px; padding: 36px 0; border-bottom: 1px solid var(--line); }
.timeline-item time { color: var(--muted); font-size: 23px; font-weight: 400; }
.timeline-item h3 { margin-top: 15px; }
.timeline-item p { font-size: 14px; }
.timeline-item .text-link { display: inline-block; margin-top: 20px; }
.archive-list { border-top: 1px solid var(--line); }
.archive-list > a { display: flex; align-items: center; gap: 35px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.archive-list time { font-size: 13px; color: var(--muted); }
.archive-list small { margin-left: 18px; font-size: 11px; color: var(--muted); }
.archive-list b { margin-left: auto; font-size: 23px; color: var(--accent); }
.archive-list > a:hover { color: var(--accent); }
.contact-section { background: var(--tint); border-top: 1px solid var(--line); padding-block: 76px; scroll-margin-top: 25px; }
.contact-grid { display: grid; grid-template-columns: 1fr 1.12fr; gap: 85px; align-items: center; }
.contact-copy .eyebrow { font-size: 11px; }
.contact-copy h2 { font-size: 39px; line-height: 1.55; }
.contact-copy > p:not(.eyebrow) { margin-top: 20px; font-size: 14px; color: var(--muted); }
.contact-phone { display: block; margin-top: 35px; color: var(--ink); font-size: 31px; font-weight: 450; letter-spacing: -.04em; }
.contact-phone span { font-size: 23px; margin-left: 14px; }
.contact-email { display: inline-block; margin-top: 3px; font-size: 15px; color: var(--muted); }
.contact-footnote { display: flex; align-items: center; gap: 9px; margin-top: 44px; font-size: 11px; color: var(--muted); }
.contact-form-panel { padding: 28px; border: 1px solid var(--line-strong); border-radius: 14px; background: var(--paper); }
.form-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.form-heading h3 { font-size: 19px; }
.site-form { margin-top: 20px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
.form-grid .field { min-width: 0; }
.form-grid .wide { grid-column: 1 / -1; }
.site-form label, .site-form legend { display: block; margin-bottom: 5px; color: var(--body); font-size: 12px; line-height: 1.6; }
.site-form input:not([type=checkbox]), .site-form select, .site-form textarea { display: block; width: 100%; min-width: 0; padding: 10px 12px; border: 1px solid var(--input-line); border-radius: 5px; background: var(--surface); color: var(--ink); font-size: 13px; line-height: 1.5; }
.site-form textarea { resize: vertical; min-height: 96px; }
.site-form fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
.site-form .rb-option, .site-form .rb-consent { display: flex; align-items: flex-start; gap: 8px; }
.site-form .rb-option + .rb-option { margin-top: 6px; }
.site-form input[type=checkbox] { flex: 0 0 auto; margin: 4px 0 0; accent-color: var(--accent); }
.site-form .rb-consent { margin-bottom: 0; color: var(--muted); font-size: 11px; line-height: 1.8; }
.site-form .rb-consent a { text-decoration: underline; text-underline-offset: 3px; }
.site-form .rb-note, .site-form .rb-captcha-help { margin-top: 6px; color: var(--muted); font-size: 11px; line-height: 1.8; }
.site-form .rb-captcha-controls { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-bottom: 8px; }
.site-form .rb-captcha-image { width: 210px; height: 64px; border: 1px solid var(--line-strong); border-radius: 5px; }
.site-form .rb-captcha-refresh { padding: 8px 14px; border: 1px solid var(--line-strong); border-radius: 5px; background: var(--surface); color: var(--ink); font-size: 12px; }
.site-form .rb-captcha-refresh:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.site-form .rb-honeypot { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.site-form [aria-invalid=true] { border-color: var(--error); outline: 1px solid var(--error); }
.site-form .rb-field-error { display: block; margin-top: 4px; color: var(--error); font-size: 12px; line-height: 1.6; }
.site-form .rb-field-error:empty { display: none; }
.site-form button[type=submit] { min-height: 43px; padding: 9px 19px; font-size: 12px; }
.site-form .rb-form-status { margin-top: 2px; color: var(--accent); font-size: 13px; line-height: 1.8; overflow-wrap: anywhere; }
.site-form .rb-form-status.rb-error { color: var(--error); }
.site-form .rb-form-status:empty { display: none; }
.form-block { padding-bottom: 84px; }
.form-block > .lead { margin-top: 14px; font-size: 15px; }
.form-block .site-form { margin-top: 28px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 30px; padding-block: 38px; border-bottom: 1px solid var(--line); }
.footer-brand { font-size: 18px; color: var(--ink); font-weight: 600; }
.footer-brand sup { font-size: 9px; }
.footer-bottom p { margin-top: 5px; font-size: 11px; color: var(--muted); }
.footer-bottom nav { display: flex; flex-wrap: wrap; gap: 28px; font-size: 12px; }
.footer-legal { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 15px; padding-block: 19px; color: var(--muted); font-size: 10px; }
/* Header: "更多" menu for the pages that are not in the main navigation. Without JavaScript it stays hidden; the footer links to the same pages. */
.nav-more { position: relative; }
.nav-more-button { padding: 13px 0; border: 0; background: transparent; color: inherit; font-weight: 550; white-space: nowrap; }
.nav-more-button:hover, .nav-more-button[aria-expanded="true"], .nav-more-button[aria-current] { color: var(--accent); }
.nav-more-button[aria-current] { box-shadow: inset 0 -2px var(--accent); }
.nav-more-list { position: absolute; right: 0; top: 100%; z-index: 30; min-width: 176px; margin: 0; padding: 8px; list-style: none; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 14px 34px var(--shadow-soft); }
.nav-more-list a { display: block; padding: 9px 14px; border-radius: 6px; font-size: 13px; white-space: nowrap; }
.nav-more-list a:hover { color: var(--accent); background: var(--accent-soft); }

/* Articles and text pages carried over from the old site. */
.article-hero { padding-bottom: 36px; }
.article-hero h1 { font-size: clamp(30px, 3.6vw, 46px); }
.article-meta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 20px; font-size: 13px; color: var(--muted); }
.article-meta span::before { content: "·"; margin-right: 14px; }
.prose { padding-bottom: 84px; }
.prose > * + * { margin-top: 18px; }
.prose h2 { margin-top: 54px; font-size: 26px; }
.prose h3 { margin-top: 38px; font-size: 21px; }
.prose h4, .prose h5, .prose h6 { margin: 30px 0 0; color: var(--ink); font-size: 17px; line-height: 1.5; }
.prose h2 + *, .prose h3 + *, .prose h4 + * { margin-top: 14px; }
.prose p + p { margin-top: 18px; }
.prose ul, .prose ol { padding-left: 1.5em; }
.prose li + li { margin-top: 6px; }
.prose li > p { margin: 0; }
.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.prose a:hover { color: var(--accent-hover); }
.prose hr { margin-block: 36px; border: 0; border-top: 1px solid var(--line); }
.prose img { border-radius: 10px; }
.prose figure { margin-block: 30px; }
.prose figure.photos picture + picture { margin-top: 14px; }
.prose figcaption { margin-top: 10px; font-size: 12px; line-height: 1.8; color: var(--muted); }
.prose table { display: block; width: 100%; overflow-x: auto; border-collapse: collapse; font-size: 14px; }
.prose th, .prose td { padding: 11px 15px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.prose details { border-top: 1px solid var(--line); padding-block: 20px; }
.prose details:last-of-type { border-bottom: 1px solid var(--line); }
.prose summary { position: relative; padding-right: 32px; list-style: none; color: var(--ink); font-size: 17px; }
.prose summary::-webkit-details-marker { display: none; }
.prose summary::after { content: "+"; position: absolute; right: 5px; top: 0; font-size: 22px; color: var(--muted); }
.prose details[open] summary::after { content: "−"; }
.prose details > :not(summary) { margin-top: 16px; font-size: 15px; }
.correction { padding: 16px 20px; border: 1px solid var(--warning-line); border-radius: 10px; background: var(--warning-bg); color: var(--warning-text); font-size: 14px; line-height: 1.85; }
.correction p { margin: 0; }
.prose .note { padding: 0; font-size: 13px; }
.form-slot { margin-top: 40px; }
.contact-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; margin-top: 30px; }
.footer-bottom { align-items: flex-start; }
.footer-bottom .footer-nav { display: grid; grid-template-columns: repeat(3, auto); gap: 14px 64px; }
.footer-nav > div { display: grid; align-content: start; gap: 8px; }
.footer-nav b { margin-bottom: 2px; color: var(--ink); font-weight: 600; }
.footer-nav a:hover { color: var(--accent); }

@media (min-width: 1500px) { .hero-grid { gap: 60px; } }
@media (max-width: 1100px) {
  .container { width: calc(100% - 64px); }
  .site-nav { gap: 22px; }
  .site-nav .nav-cta { margin-left: 0; }
  .hero-grid { gap: 25px; }
  .hero-visual { padding: 18px; }
  .hero .button-row { gap: 12px; }
  .hero .button { font-size: 12px; padding: 10px 16px; }
  .hero .button.text { padding-inline: 0; }
  .stat-strip > div { padding-inline: 22px; }
  .stat-strip strong { font-size: 23px; }
  .product-card { padding: 26px; }
  .contact-grid { gap: 40px; }
  .contact-copy h2 { font-size: 33px; }
  .lifecycle-mini > div { gap: 12px; padding-left: 22px; flex-wrap: wrap; }
  .lifecycle-mini small { margin-left: 0; }
}
@media (max-width: 860px) {
  .container { width: calc(100% - 48px); }
  .section { padding-block: 64px; }
  .header-inner { min-height: 78px; flex-wrap: wrap; gap: 0; }
  .brand strong { font-size: 23px; }
  .menu-toggle { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--line-strong); border-radius: 5px; color: var(--ink); background: transparent; padding: 7px 12px; font-size: 12px; }
  .menu-bars { display: inline-block; width: 13px; height: 9px; border-block: 1px solid currentColor; }
  .site-nav { flex: 0 0 100%; padding-bottom: 20px; flex-wrap: wrap; gap: 6px 25px; }
  .site-header.enhanced:not(.menu-open) .site-nav { display: none; }
  .site-header.menu-open .site-nav { display: flex; }
  .hero { padding-top: 50px; }
  .hero-grid { grid-template-columns: 1fr; gap: 42px; }
  .hero-copy { max-width: 590px; }
  .hero h1 { font-size: 48px; }
  .hero-visual { max-width: 620px; width: 100%; padding: 24px; justify-self: center; }
  .hero-device img { max-height: 190px; margin-inline: auto; }
  .client-nodes { margin-top: 20px; }
  .stat-strip { margin-top: 45px; }
  .stat-strip strong { font-size: 20px; }
  .stat-strip > div { padding-inline: 15px; }
  .stat-strip p { font-size: 10px; }
  .section-head { gap: 25px; align-items: start; }
  .section-description { max-width: 330px; font-size: 14px; }
  .product-card { padding: 23px; }
  .product-card h3 { font-size: 25px; }
  .card-bottom { flex-wrap: wrap; }
  .feature-grid, .scenario-grid, .three-col { gap: 20px; }
  .feature h3 { font-size: 20px; }
  .scenario-card { padding: 21px; }
  .split { gap: 35px; }
  .lifecycle-banner .split { flex-direction: column; align-items: stretch; }
  .lifecycle-mini { display: flex; border-left: 0; border-top: 1px solid var(--dark-line); }
  .lifecycle-mini > div { flex: 1; flex-direction: column; align-items: start; margin: 0; padding: 23px 14px 0 0; gap: 6px; }
  .lifecycle-mini > div::before { top: -4px; left: 0; }
  .detail-hero { grid-template-columns: 1fr; gap: 30px; }
  .detail-figure { max-width: 620px; width: 100%; justify-self: center; }
  .detail-figure img { max-height: 220px; margin-inline: auto; }
  .detail-hero h1 { font-size: 48px; }
  .card { padding: 25px; }
  .card h2 { font-size: 24px; }
  .legacy-card { padding: 23px; }
  .lifecycle-dates { flex-wrap: wrap; gap: 20px; }
  .three-col { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .contact-copy { max-width: 580px; }
  .contact-copy h2 { font-size: 35px; }
  .contact-footnote { margin-top: 20px; }
  .contact-form-panel { max-width: 700px; width: 100%; }
  .footer-bottom { align-items: start; }
  .footer-bottom nav { gap: 12px 20px; justify-content: end; }
}
@media (max-width: 600px) {
  .container { width: calc(100% - 36px); }
  .site-header .brand img { width: 29px; height: 29px; }
  .site-nav { gap: 4px 22px; font-size: 13px; }
  .site-nav > a { padding-block: 9px; }
  .hero { padding-top: 35px; }
  .hero h1 { font-size: clamp(31px, 8.3vw, 46px); }
  .hero .eyebrow { font-size: 10px; }
  .lead, .hero .lead { font-size: 14px; }
  .lead br { display: none; }
  .hero .button-row { gap: 16px; }
  .hero .button { padding-inline: 16px; }
  .hero .button.text { padding-inline: 0; }
  .hero-proof { font-size: 10px; gap: 8px 12px; margin-top: 23px; }
  .hero-visual { padding: 16px 12px; border-radius: 14px; }
  .visual-code { display: none; }
  .client-nodes { gap: 8px; margin-inline: 4px; }
  .client-nodes b { font-size: 10px; }
  .client-nodes small { font-size: 8px; }
  .client-nodes > span { padding: 10px 4px; }
  .hero-device figcaption { font-size: 8px; }
  .visual-bottomline { margin-top: 18px; font-size: 9px; gap: 5px; }
  .stat-strip { grid-template-columns: 1fr 1fr; gap: 24px 0; padding-block: 25px; margin-top: 35px; }
  .stat-strip > div { padding-inline: 20px; }
  .stat-strip > div:nth-child(odd) { padding-left: 0; border: 0; }
  .stat-strip strong { font-size: 23px; }
  .stat-strip p { font-size: 11px; }
  .section { padding-block: 52px; }
  .section-head { flex-direction: column; gap: 20px; margin-bottom: 28px; }
  .eyebrow { margin-bottom: 13px; font-size: 10px; }
  h2 { font-size: 29px; }
  .product-grid, .two-col, .news-grid, .feature-grid, .scenario-grid { grid-template-columns: 1fr; gap: 20px; }
  .product-card { padding: 25px; }
  .product-card h3 { font-size: 29px; }
  .card-bottom { flex-wrap: nowrap; gap: 8px; }
  .card-bottom .button { padding-inline: 12px; gap: 10px; }
  .card-bottom > span { font-size: 10px; }
  .figure-note { font-size: 10px; }
  .feature-grid { gap: 32px; }
  .feature { padding-top: 22px; }
  .feature-number { width: 36px; height: 36px; margin-bottom: 18px; }
  .feature h3 { font-size: 23px; }
  .feature-tag { padding-top: 17px; }
  .scenario-card { padding: 24px; }
  .scenario-index { float: right; margin: 0 0 10px 15px; font-size: 30px; }
  .scenario-card p { margin-bottom: 17px; }
  .lifecycle-mini { gap: 10px; }
  .lifecycle-mini b { font-size: 13px; }
  .lifecycle-mini small { font-size: 9px; }
  .lifecycle-mini > div { padding-right: 0; }
  .news-card { padding: 24px 22px 45px; }
  .news-card h3 { font-size: 22px; }
  .page-hero { padding-top: 24px; padding-bottom: 45px; }
  .breadcrumbs { font-size: 10px; margin-bottom: 36px; }
  .page-hero > .eyebrow { margin-top: 30px; }
  .page-hero h1 { font-size: 33px; }
  .page-hero .button-row { gap: 14px; }
  .page-hero .button { padding-inline: 15px; font-size: 12px; }
  .page-hero .button.text { padding-inline: 0; }
  .detail-figure { padding: 20px 5px; }
  .detail-tags { gap: 8px; font-size: 10px; margin-top: 20px; }
  .detail-tags span { padding-inline: 7px; }
  .spec-table th, .spec-table td { padding: 14px 16px; }
  .spec-table tbody th { min-width: 130px; }
  .spec-table:not(.detail-spec) td { min-width: 200px; }
  .detail-spec { font-size: 12px; }
  .detail-spec th { min-width: 100px !important; width: 32% !important; }
  .detail-spec th, .detail-spec td { padding: 13px 12px; }
  .split { flex-direction: column; align-items: start; gap: 25px; }
  .callout { padding: 25px; }
  .lifecycle-track { grid-template-columns: 1fr; }
  .lifecycle-track > span { padding: 13px 20px; }
  .legacy-card h2 { font-size: 23px; }
  .lifecycle-dates { justify-content: space-between; gap: 15px; }
  .lifecycle-dates strong { font-size: 18px; }
  .faq-list summary { font-size: 15px; }
  .process-grid { gap: 28px 18px; }
  .process-grid h3 { font-size: 16px; }
  .process-grid p { font-size: 12px; }
  .process-grid li > span { font-size: 28px; margin-bottom: 15px; }
  .timeline-item { grid-template-columns: 1fr; gap: 12px; padding-block: 28px; }
  .timeline-item time { font-size: 19px; }
  .timeline-item h3 { font-size: 22px; }
  .archive-list > a { gap: 18px; font-size: 14px; }
  .archive-list time { font-size: 10px; white-space: nowrap; }
  .archive-list small { display: block; margin: 4px 0 0; font-size: 10px; }
  .contact-section { padding-block: 48px; }
  .contact-copy h2 { font-size: 32px; }
  .contact-phone { font-size: 29px; margin-top: 25px; }
  .contact-form-panel { padding: 23px 18px; }
  .form-heading { flex-wrap: wrap; gap: 8px; }
  .form-grid { grid-template-columns: 1fr; gap: 14px; }
  .site-form input:not([type=checkbox]), .site-form select, .site-form textarea { font-size: 16px; }
  .footer-bottom { flex-direction: column; align-items: start; padding-block: 30px; gap: 24px; }
  .footer-bottom nav { justify-content: start; }
  .footer-legal { gap: 5px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

@media (max-width: 860px) {
  .nav-more { flex: 0 0 100%; }
  .nav-more-button { padding-block: 9px; }
  .nav-more-list { position: static; display: flex; flex-wrap: wrap; gap: 0 20px; min-width: 0; padding: 0 0 8px 12px; border: 0; box-shadow: none; background: transparent; }
  .nav-more-list[hidden] { display: none; }
  .nav-more-list a { padding: 7px 0; }
}
@media (max-width: 600px) {
  .article-hero h1 { font-size: 28px; }
  .prose h2 { font-size: 23px; }
  .prose summary { font-size: 15px; }
  .footer-bottom .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); width: 100%; gap: 22px 28px; }
}