/* Enterprise Connect — technical grid, original vector diagrams */
:root {
  --p-blue: oklch(0.5499 0.2489 262.3129);
  --p-orange: oklch(0.6761 0.2167 38.1565);
  --p-paper: oklch(0.9713 0.0054 117.9227);
  --p-white: oklch(1 0 0);
  --p-ink: oklch(0.1776 0 0);
  --p-muted: oklch(0.6268 0 0);
  --p-grey: oklch(0.9491 0 0);
  --p-charcoal: oklch(0.3211 0 0);
  --surface-page: var(--p-paper);
  --surface-raised: var(--p-white);
  --surface-alt: var(--p-grey);
  --surface-dark: oklch(0.22 0.018 262.3129);
  --text-primary: var(--p-ink);
  --text-secondary: oklch(0.43 0.008 262.3129);
  --text-on-dark: oklch(0.96 0.006 262.3129);
  --accent: var(--p-blue);
  --action: var(--p-orange);
  --border: oklch(0.82 0.008 262.3129);
  --border-strong: oklch(0.58 0.012 262.3129);
  --button-primary-bg: var(--action);
  --button-primary-text: var(--p-white);
  --button-secondary-bg: transparent;
  --button-secondary-text: var(--text-primary);
  --font-display: "Noto Serif CJK SC", "Source Han Serif SC", "Songti SC", SimSun, serif;
  --font-body: "Noto Sans CJK SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", "Noto Sans Mono CJK SC", monospace;
  --container: 80rem;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --section: clamp(4.5rem, 9vw, 8rem);
  --ease: cubic-bezier(0.23, 1, 0.32, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 6rem; }
body {
  margin: 0;
  color: var(--text-primary);
  background: var(--surface-page);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.22em; }
a:hover { color: var(--accent); }
button, input, select, textarea { font: inherit; }
button, select { cursor: pointer; }
img, svg { display: block; max-width: 100%; }
img { height: auto; }
button { color: inherit; }
::selection { color: var(--p-white); background: var(--accent); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
[hidden] { display: none !important; }

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--p-white);
  background: var(--accent);
  transform: translateY(-180%);
}
.skip-link:focus { transform: translateY(0); }
.container { width: min(100% - (2 * var(--gutter)), var(--container)); margin-inline: auto; }
.section { padding-block: var(--section); }
.section + .section { border-top: 1px solid var(--border); }
.section-white { background: var(--surface-raised); }
.section-dark { color: var(--text-on-dark); background: var(--surface-dark); }
.section-compact { padding-block: clamp(3rem, 6vw, 5rem); }
.nowrap { white-space: nowrap; }
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.muted { color: var(--text-secondary); }
.accent { color: var(--accent); }
.action-color { color: var(--action); }

h1, h2, h3, h4, p, ul, ol { margin-top: 0; }
h1, h2, h3 { text-wrap: balance; }
h1, h2 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.18;
}
h1 { max-width: 14em; margin-bottom: 1.75rem; font-size: clamp(2.45rem, 5.4vw, 5.35rem); }
h2 { margin-bottom: 1.25rem; font-size: clamp(2rem, 3.7vw, 3.55rem); }
h3 { margin-bottom: 0.85rem; font-size: clamp(1.2rem, 1.8vw, 1.55rem); line-height: 1.35; }
p { max-width: 72ch; }
.lead { max-width: 44rem; color: var(--text-secondary); font-size: clamp(1.05rem, 1.6vw, 1.25rem); line-height: 1.8; }
.section-dark .lead, .section-dark .muted { color: color-mix(in oklab, var(--text-on-dark) 70%, transparent); }
.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: start;
  margin-bottom: clamp(2.5rem, 5vw, 4.5rem);
}
.section-heading h2 { margin-bottom: 0; }
.section-heading p { margin-bottom: 0; }
.section-label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.4rem;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.section-label::before { width: 1.75rem; height: 2px; background: currentColor; content: ""; }

/* Header */
.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  border-bottom: 1px solid var(--border);
  background: color-mix(in oklab, var(--surface-page) 94%, transparent);
  backdrop-filter: blur(12px);
}
.header-inner { display: grid; grid-template-columns: auto 1fr auto; min-height: 5rem; align-items: center; gap: 2rem; }
.brand { display: inline-flex; align-items: center; gap: 0.75rem; text-decoration: none; }
.brand-mark { width: 2.4rem; height: 2.4rem; }
.brand-name { display: block; font-size: 1.08rem; font-weight: 800; letter-spacing: 0.04em; line-height: 1.25; }
.brand-sub { display: block; margin-top: 0.2rem; color: var(--text-secondary); font-family: var(--font-mono); font-size: 0.63rem; letter-spacing: 0.08em; line-height: 1.2; }
.desktop-nav { display: flex; justify-content: center; align-items: center; gap: clamp(1rem, 2.2vw, 2rem); }
.desktop-nav a { position: relative; padding-block: 1.65rem; font-size: 0.92rem; font-weight: 600; text-decoration: none; white-space: nowrap; }
.desktop-nav a::after { position: absolute; right: 0; bottom: -1px; left: 0; height: 2px; background: var(--accent); content: ""; transform: scaleX(0); transform-origin: left; transition: transform 160ms var(--ease); }
.desktop-nav a:hover::after, .desktop-nav a[aria-current="page"]::after { transform: scaleX(1); }
.header-actions { display: flex; align-items: center; gap: 0.75rem; }
.header-phone { font-family: var(--font-mono); font-size: 0.85rem; font-weight: 700; text-decoration: none; white-space: nowrap; }
.menu-button {
  display: none;
  width: 3rem;
  height: 3rem;
  padding: 0;
  border: 1px solid var(--border);
  background: transparent;
  align-items: center;
  justify-content: center;
}
.menu-button svg { width: 1.35rem; height: 1.35rem; }
.mobile-nav { position: fixed; z-index: 30; inset: 5rem 0 0; padding: 1.25rem var(--gutter) 2rem; color: var(--text-on-dark); background: var(--surface-dark); overflow-y: auto; }
.mobile-nav a { display: flex; min-height: 3.5rem; align-items: center; justify-content: space-between; border-bottom: 1px solid color-mix(in oklab, var(--text-on-dark) 18%, transparent); font-size: 1.05rem; text-decoration: none; }
.mobile-nav a::after { content: "↗"; color: var(--action); font-family: var(--font-mono); }
.mobile-nav .mobile-contact { margin-top: 2rem; }
.mobile-nav .mobile-contact a { justify-content: flex-start; font-family: var(--font-mono); }

/* Buttons and links */
.button-row { display: flex; flex-wrap: wrap; gap: 0.85rem; margin-top: 2rem; }
.button {
  display: inline-flex;
  min-height: 3.25rem;
  padding: 0.8rem 1.25rem;
  border: 1px solid transparent;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  font-weight: 700;
  line-height: 1.3;
  text-decoration: none;
  transition: color 140ms var(--ease), background 140ms var(--ease), transform 140ms var(--ease);
}
.button:hover { transform: translateY(-2px); }
.button:active { transform: translateY(0); }
.button-primary { color: var(--button-primary-text); background: var(--button-primary-bg); }
.button-primary:hover { color: var(--p-white); background: oklch(0.61 0.22 38.1565); }
.button-secondary { border-color: var(--border-strong); color: var(--button-secondary-text); background: var(--button-secondary-bg); }
.button-secondary:hover { border-color: var(--accent); }
.button-dark { color: var(--p-white); background: var(--surface-dark); }
.button-dark:hover { color: var(--p-white); background: var(--accent); }
.button-small { min-height: 2.75rem; padding: 0.65rem 0.9rem; font-size: 0.88rem; }
.arrow-link { display: inline-flex; min-height: 2.75rem; align-items: center; gap: 1rem; color: var(--accent); font-weight: 700; text-decoration: none; }
.arrow-link::after { content: "→"; font-family: var(--font-mono); transition: transform 140ms var(--ease); }
.arrow-link:hover::after { transform: translateX(0.3rem); }
.text-link { color: var(--accent); font-weight: 650; }

/* Home hero */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--border); }
.hero::before {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(to right, color-mix(in oklab, var(--border) 45%, transparent) 1px, transparent 1px), linear-gradient(to bottom, color-mix(in oklab, var(--border) 45%, transparent) 1px, transparent 1px);
  background-size: 5rem 5rem;
  content: "";
  mask-image: linear-gradient(to bottom, black, transparent 82%);
}
.hero-grid { position: relative; display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); gap: clamp(2rem, 5vw, 5rem); align-items: center; min-height: min(50rem, calc(100vh - 5rem)); padding-block: clamp(4rem, 8vw, 7rem); }
.hero h1 { max-width: 10.5em; }
.hero h1 .hero-line { display: block; white-space: nowrap; }
.hero h1 .hero-accent { color: var(--accent); }
.hero-intro { max-width: 39rem; }
.hero-specs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 2.5rem; border-top: 1px solid var(--border-strong); }
.hero-spec { padding: 1rem 1rem 0 0; }
.hero-spec + .hero-spec { padding-left: 1rem; border-left: 1px solid var(--border); }
.hero-spec strong { display: block; font-family: var(--font-mono); font-size: clamp(0.76rem, 1.25vw, 1.08rem); font-variant-numeric: tabular-nums; line-height: 1.4; white-space: nowrap; }
.hero-spec span { display: block; margin-top: 0.35rem; color: var(--text-secondary); font-size: 0.78rem; }

.network-panel { position: relative; border: 1px solid var(--border-strong); background: var(--surface-raised); }
.network-panel::before, .network-panel::after { position: absolute; width: 0.75rem; height: 0.75rem; border-color: var(--action); content: ""; pointer-events: none; }
.network-panel::before { top: -1px; left: -1px; border-top: 2px solid var(--action); border-left: 2px solid var(--action); }
.network-panel::after { right: -1px; bottom: -1px; border-right: 2px solid var(--action); border-bottom: 2px solid var(--action); }
.panel-bar { display: flex; min-height: 3.25rem; padding: 0.75rem 1rem; border-bottom: 1px solid var(--border); align-items: center; justify-content: space-between; gap: 1rem; font-family: var(--font-mono); font-size: 0.72rem; }
.panel-status { display: inline-flex; align-items: center; gap: 0.5rem; color: var(--accent); font-weight: 700; }
.panel-status::before { width: 0.5rem; height: 0.5rem; background: var(--accent); content: ""; }
.diagram-switch { display: inline-flex; gap: 0.25rem; }
.diagram-btn { min-width: 3.8rem; min-height: 2.75rem; padding: 0.5rem 0.7rem; border: 1px solid transparent; background: transparent; font-size: 0.78rem; font-weight: 700; }
.diagram-btn[aria-pressed="true"] { border-color: var(--accent); color: var(--accent); background: color-mix(in oklab, var(--accent) 7%, white); }
.network-diagram { width: 100%; min-height: 20rem; }
.network-diagram text { font-family: var(--font-body); }
.network-diagram .mono-svg { font-family: var(--font-mono); }
.network-diagram .node-box { fill: var(--surface-page); stroke: var(--border-strong); }
.network-diagram .node-box-active { fill: color-mix(in oklab, var(--accent) 7%, white); stroke: var(--accent); }
.network-diagram .route-line { fill: none; stroke: var(--accent); stroke-width: 3; }
.network-diagram .route-line-secondary { fill: none; stroke: var(--border-strong); stroke-width: 1.5; stroke-dasharray: 6 6; }
.network-diagram .route-point { fill: var(--action); }
.network-diagram .icon-stroke { fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.panel-caption { display: grid; grid-template-columns: 1fr auto; gap: 1rem; padding: 1rem; border-top: 1px solid var(--border); align-items: center; }
.panel-caption p { margin: 0; color: var(--text-secondary); font-size: 0.8rem; }
.panel-caption span { color: var(--text-secondary); font-family: var(--font-mono); font-size: 0.68rem; white-space: nowrap; }

/* Product architecture */
.product-ledger { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--border-strong); border-bottom: 1px solid var(--border-strong); }
.product-entry { padding: clamp(1.5rem, 4vw, 3rem); }
.product-entry + .product-entry { border-left: 1px solid var(--border-strong); }
.product-code { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 2rem; color: var(--accent); font-family: var(--font-mono); font-size: 0.75rem; font-weight: 700; }
.product-entry h3 { font-family: var(--font-display); font-size: clamp(1.65rem, 2.6vw, 2.3rem); }
.product-entry p { color: var(--text-secondary); }
.clean-list { margin: 1.5rem 0; padding: 0; list-style: none; }
.clean-list li { position: relative; padding: 0.55rem 0 0.55rem 1.3rem; }
.clean-list li::before { position: absolute; top: 1.15rem; left: 0; width: 0.42rem; height: 0.42rem; background: var(--accent); content: ""; }
.check-list li::before { top: 0.65rem; width: 0.8rem; height: 0.4rem; border-bottom: 2px solid var(--accent); border-left: 2px solid var(--accent); background: transparent; transform: rotate(-45deg); }

/* Connection directory */
.directory-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(2rem, 6vw, 6rem); }
.directory-group h3 { padding-bottom: 1rem; border-bottom: 2px solid var(--text-primary); }
.route-list { margin: 0; padding: 0; list-style: none; }
.route-list li { border-bottom: 1px solid var(--border); }
.route-list a { display: grid; grid-template-columns: 1fr auto; min-height: 4.4rem; padding-block: 1rem; align-items: center; gap: 1rem; text-decoration: none; }
.route-list a:hover { padding-left: 0.5rem; color: var(--accent); }
.route-list strong { font-size: 1.02rem; }
.route-list small { display: block; margin-top: 0.25rem; color: var(--text-secondary); font-size: 0.78rem; }
.route-list .route-arrow { color: var(--action); font-family: var(--font-mono); }

/* Scenarios */
.scenario-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: clamp(2rem, 6vw, 6rem); border-top: 1px solid var(--border-strong); }
.scenario-item { padding: 1.8rem 0; border-bottom: 1px solid var(--border); }
.scenario-item h3 { margin-bottom: 0.65rem; }
.scenario-item p { margin-bottom: 0.65rem; color: var(--text-secondary); }
.scenario-tag { display: block; margin-bottom: 0.7rem; color: var(--accent); font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700; }

/* Tables */
.table-scroll { max-width: 100%; overflow-x: auto; border-top: 2px solid var(--text-primary); border-bottom: 1px solid var(--border-strong); -webkit-overflow-scrolling: touch; scrollbar-color: var(--border-strong) var(--surface-page); }
.spec-table { width: 100%; border-collapse: collapse; font-size: 0.92rem; text-align: left; }
.spec-table th, .spec-table td { padding: 1rem 1.1rem; border-bottom: 1px solid var(--border); vertical-align: top; }
.spec-table th { color: var(--text-secondary); background: color-mix(in oklab, var(--surface-alt) 65%, transparent); font-size: 0.78rem; font-weight: 700; white-space: nowrap; }
.spec-table td:first-child { font-weight: 700; }
.spec-table tbody tr:last-child td { border-bottom: 0; }
.spec-table .num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; white-space: nowrap; }
.table-note { margin-top: 1rem; color: var(--text-secondary); font-size: 0.82rem; }
.price-emphasis { color: var(--action); font-family: var(--font-mono); font-weight: 800; white-space: nowrap; }

/* Process and facts */
.process-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border-top: 1px solid var(--border-strong); }
.process-grid-four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.process-step { padding: 1.5rem 1.25rem 0 0; }
.process-step + .process-step { padding-left: 1.25rem; border-left: 1px solid var(--border); }
.process-step strong { display: block; margin-bottom: 0.7rem; font-size: 1.05rem; }
.process-step p { color: var(--text-secondary); font-size: 0.88rem; }
.fact-strip { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-block: 1px solid var(--border-strong); }
.fact { padding: 1.25rem; }
.fact + .fact { border-left: 1px solid var(--border); }
.fact span { display: block; color: var(--text-secondary); font-size: 0.75rem; }
.fact strong { display: block; margin-top: 0.35rem; font-family: var(--font-mono); font-size: 0.95rem; line-height: 1.5; }
.two-col { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(2rem, 6vw, 6rem); }
.content-block { padding-top: 1.4rem; border-top: 1px solid var(--border-strong); }
.content-block p, .content-block li { color: var(--text-secondary); }
.content-block ul { padding-left: 1.2rem; }

/* Quote */
.quote-layout { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: clamp(2.5rem, 7vw, 7rem); align-items: start; }
.quote-copy { position: sticky; top: 7rem; }
.quote-copy h2 { max-width: 8em; }
.quote-contacts { margin-top: 2.5rem; border-top: 1px solid color-mix(in oklab, var(--text-on-dark) 30%, transparent); }
.contact-line { display: grid; grid-template-columns: 1fr auto; gap: 1rem; padding-block: 1rem; border-bottom: 1px solid color-mix(in oklab, var(--text-on-dark) 20%, transparent); align-items: center; }
.contact-line a { font-family: var(--font-mono); font-size: 1.08rem; font-weight: 700; text-decoration: none; }
.contact-line small { display: block; color: color-mix(in oklab, var(--text-on-dark) 60%, transparent); }
.copy-button { min-width: 3.4rem; min-height: 2.75rem; padding: 0.5rem 0.7rem; border: 1px solid color-mix(in oklab, var(--text-on-dark) 35%, transparent); color: var(--text-on-dark); background: transparent; }
.copy-button:hover { border-color: var(--action); color: var(--action); }
.quote-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.4rem 1.5rem; }
.field { min-width: 0; }
.field-full { grid-column: 1 / -1; }
.field label { display: block; margin-bottom: 0.55rem; font-size: 0.82rem; font-weight: 700; }
.field input, .field select {
  width: 100%;
  min-height: 3.5rem;
  padding: 0.75rem 0;
  border: 0;
  border-bottom: 1px solid color-mix(in oklab, var(--text-on-dark) 45%, transparent);
  border-radius: 0;
  color: var(--text-on-dark);
  background: transparent;
  outline: none;
}
.field select { color-scheme: dark; }
.field input::placeholder { color: color-mix(in oklab, var(--text-on-dark) 45%, transparent); }
.field input:focus, .field select:focus { border-bottom-color: var(--action); }
.field-hint { display: block; margin-top: 0.45rem; color: color-mix(in oklab, var(--text-on-dark) 58%, transparent); font-size: 0.75rem; }
.form-footer { display: flex; flex-wrap: wrap; grid-column: 1 / -1; align-items: center; gap: 1rem; margin-top: 0.5rem; }
.form-privacy { max-width: 28rem; margin: 0; color: color-mix(in oklab, var(--text-on-dark) 58%, transparent); font-size: 0.75rem; }
.quote-result { grid-column: 1 / -1; margin-top: 1.5rem; padding: 1.5rem; border: 1px solid color-mix(in oklab, var(--text-on-dark) 30%, transparent); background: color-mix(in oklab, var(--text-on-dark) 5%, transparent); }
.quote-result h3 { color: var(--action); }
.quote-result pre { max-width: 100%; margin: 1rem 0; white-space: pre-wrap; overflow-wrap: anywhere; color: var(--text-on-dark); font-family: var(--font-mono); font-size: 0.82rem; line-height: 1.8; }
.form-message { min-height: 1.5rem; margin: 0.5rem 0 0; color: var(--action); font-size: 0.85rem; }

/* FAQ */
.faq-list { border-top: 1px solid var(--border-strong); }
.faq-list details { border-bottom: 1px solid var(--border); }
.faq-list summary { position: relative; min-height: 4.5rem; padding: 1.3rem 3rem 1.3rem 0; cursor: pointer; font-weight: 700; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { position: absolute; top: 1.2rem; right: 0.25rem; color: var(--accent); content: "+"; font-family: var(--font-mono); font-size: 1.5rem; }
.faq-list details[open] summary::after { content: "−"; }
.faq-answer { padding: 0 3rem 1.5rem 0; color: var(--text-secondary); }
.faq-answer p:last-child { margin-bottom: 0; }

/* Subpages */
.breadcrumbs { margin-bottom: 2rem; font-size: 0.78rem; }
.breadcrumbs ol { display: flex; flex-wrap: wrap; margin: 0; padding: 0; gap: 0.5rem; list-style: none; }
.breadcrumbs li:not(:last-child)::after { margin-left: 0.5rem; color: var(--text-secondary); content: "/"; }
.breadcrumbs a { color: var(--text-secondary); }
.subhero { padding-block: clamp(3.5rem, 7vw, 6.5rem); border-bottom: 1px solid var(--border); }
.subhero-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(2rem, 6vw, 6rem); align-items: center; }
.subhero h1 { max-width: 12em; font-size: clamp(2.35rem, 4.7vw, 4.8rem); }
.subhero .lead { max-width: 42rem; }
.route-ticket { border-top: 2px solid var(--accent); border-bottom: 1px solid var(--border-strong); background: var(--surface-raised); }
.ticket-head { display: flex; padding: 1rem 1.25rem; border-bottom: 1px solid var(--border); align-items: center; justify-content: space-between; gap: 1rem; font-family: var(--font-mono); font-size: 0.72rem; }
.ticket-body { padding: 1.5rem 1.25rem; }
.ticket-route { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 1rem; }
.ticket-city { font-family: var(--font-display); font-size: clamp(1.35rem, 2.5vw, 2rem); font-weight: 700; }
.ticket-city:last-child { text-align: right; }
.ticket-line { position: relative; width: clamp(3rem, 6vw, 5.5rem); height: 2px; background: var(--accent); }
.ticket-line::before, .ticket-line::after { position: absolute; top: -0.25rem; width: 0.5rem; height: 0.5rem; background: var(--action); content: ""; }
.ticket-line::before { left: 0; }
.ticket-line::after { right: 0; }
.ticket-meta { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin-top: 1.75rem; padding-top: 1rem; border-top: 1px dashed var(--border-strong); }
.ticket-meta span { display: block; color: var(--text-secondary); font-size: 0.72rem; }
.ticket-meta strong { display: block; margin-top: 0.25rem; font-family: var(--font-mono); font-size: 0.85rem; }
.anchor-target { scroll-margin-top: 7rem; }
.page-cta { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.5rem; padding: 2rem 0; border-block: 1px solid var(--border-strong); }
.page-cta h2 { max-width: 18em; margin: 0; font-size: clamp(1.65rem, 3vw, 2.5rem); }

/* Calculator */
.calculator { padding: clamp(1.5rem, 4vw, 2.5rem); border: 1px solid var(--border-strong); background: var(--surface-raised); }
.calculator-form { display: grid; grid-template-columns: 1fr 1fr auto; gap: 1rem; align-items: end; }
.calculator .field input { min-height: 3.25rem; padding: 0.6rem 0.75rem; border: 1px solid var(--border-strong); color: var(--text-primary); }
.calculator-result { margin-top: 1.5rem; padding-top: 1.25rem; border-top: 1px solid var(--border); }
.calculator-result strong { color: var(--accent); font-family: var(--font-mono); font-size: 1.35rem; }

/* Footer */
.site-footer { padding-top: clamp(3.5rem, 7vw, 6rem); color: var(--text-on-dark); background: oklch(0.18 0.014 262.3129); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 4fr) repeat(3, minmax(0, 2fr)); gap: 2.5rem; padding-bottom: 3rem; }
.footer-brand p { max-width: 25rem; color: color-mix(in oklab, var(--text-on-dark) 62%, transparent); font-size: 0.85rem; }
.footer-brand .brand-sub { color: color-mix(in oklab, var(--text-on-dark) 55%, transparent); }
.footer-col h2 { margin-bottom: 1rem; font-family: var(--font-body); font-size: 0.82rem; letter-spacing: 0; }
.footer-col a { display: block; width: fit-content; min-height: 2.25rem; color: color-mix(in oklab, var(--text-on-dark) 72%, transparent); font-size: 0.82rem; text-decoration: none; }
.footer-col a:hover { color: var(--action); }
.footer-contact { font-family: var(--font-mono) !important; font-size: 0.9rem !important; }
.footer-bottom { display: flex; flex-wrap: wrap; min-height: 5rem; padding-block: 1.25rem; border-top: 1px solid color-mix(in oklab, var(--text-on-dark) 16%, transparent); align-items: center; justify-content: space-between; gap: 1rem; color: color-mix(in oklab, var(--text-on-dark) 55%, transparent); font-size: 0.75rem; }
.footer-bottom a { color: inherit; }
.mobile-quote-bar { display: none; }

/* Motion */
.diagram-view { animation: diagram-enter 280ms var(--ease); }
@keyframes diagram-enter { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

@media (max-width: 1100px) {
  .header-phone { display: none; }
  .desktop-nav { gap: 1rem; }
  .desktop-nav a { font-size: 0.84rem; }
  .hero-grid { grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 2rem; }
  .hero h1 { font-size: clamp(2.4rem, 5.5vw, 4.2rem); }
  .process-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); row-gap: 2rem; }
  .process-step:nth-child(4) { padding-left: 0; border-left: 0; }
  .footer-grid { grid-template-columns: 2fr repeat(3, 1fr); gap: 1.5rem; }
}

@media (max-width: 900px) {
  .desktop-nav, .header-actions > .button { display: none; }
  .header-inner { grid-template-columns: 1fr auto; }
  .menu-button { display: inline-flex; }
  .hero-grid, .subhero-grid { grid-template-columns: 1fr; min-height: auto; }
  .hero-copy { max-width: 46rem; }
  .hero h1 { max-width: 11em; }
  .hero-diagram { max-width: 42rem; }
  .section-heading, .quote-layout, .directory-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .section-heading { margin-bottom: 2.5rem; }
  .quote-copy { position: static; }
  .quote-copy h2 { max-width: 12em; }
  .quote-contacts { max-width: 32rem; }
  .fact-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .fact:nth-child(3) { border-left: 0; border-top: 1px solid var(--border); }
  .fact:nth-child(4) { border-top: 1px solid var(--border); }
  .footer-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
  .calculator-form { grid-template-columns: 1fr 1fr; }
  .calculator-form .button { grid-column: 1 / -1; }
}

@media (max-width: 600px) {
  :root { --gutter: 1.15rem; --section: 4.25rem; }
  html { scroll-padding-top: 5.5rem; }
  body { padding-bottom: calc(4.25rem + env(safe-area-inset-bottom)); font-size: 0.98rem; }
  h1 { font-size: clamp(2.2rem, 10vw, 3rem); letter-spacing: -0.03em; }
  h2 { font-size: clamp(1.85rem, 8vw, 2.5rem); }
  .lead { font-size: 1rem; }
  .site-header .container { width: calc(100% - 2rem); }
  .header-inner { min-height: 4.5rem; }
  .brand-mark { width: 2.15rem; height: 2.15rem; }
  .brand-name { font-size: 1rem; }
  .brand-sub { font-size: 0.58rem; }
  .mobile-nav { inset: 4.5rem 0 0; }
  .hero-grid { padding-block: 3.25rem; }
  .hero h1 { max-width: 100%; }
  .hero h1 .hero-line { white-space: nowrap; }
  .hero-specs { grid-template-columns: 1fr; }
  .hero-spec { display: grid; grid-template-columns: 1fr 1fr; padding: 0.85rem 0; border-bottom: 1px solid var(--border); align-items: center; }
  .hero-spec + .hero-spec { padding-left: 0; border-left: 0; }
  .hero-spec span { margin-top: 0; text-align: right; }
  .network-diagram { min-height: 14rem; }
  .panel-bar { align-items: flex-start; flex-direction: column; gap: 0.35rem; }
  .diagram-switch { width: 100%; }
  .diagram-btn { flex: 1; }
  .panel-caption { grid-template-columns: 1fr; }
  .panel-caption span { white-space: normal; }
  .product-ledger, .scenario-list, .two-col { grid-template-columns: 1fr; }
  .product-entry + .product-entry { border-top: 1px solid var(--border-strong); border-left: 0; }
  .product-entry { padding-inline: 0; }
  .process-grid { grid-template-columns: 1fr; }
  .process-step, .process-step + .process-step, .process-step:nth-child(4) { padding: 1.2rem 0; border-bottom: 1px solid var(--border); border-left: 0; }
  .process-step p { margin-bottom: 0; }
  .fact { padding: 1rem 0.75rem; }
  .fact strong { font-size: 0.82rem; overflow-wrap: anywhere; }
  .quote-form { grid-template-columns: 1fr; }
  .field-full, .form-footer, .quote-result { grid-column: auto; }
  .form-footer { align-items: stretch; flex-direction: column; }
  .form-footer .button { width: 100%; }
  .spec-table { min-width: 40rem; }
  .spec-table th, .spec-table td { padding: 0.9rem 0.8rem; }
  .subhero h1 { max-width: 100%; }
  .ticket-route { gap: 0.65rem; }
  .ticket-city { font-size: 1.25rem; }
  .ticket-line { width: 2.5rem; }
  .page-cta { align-items: flex-start; flex-direction: column; }
  .calculator-form { grid-template-columns: 1fr; }
  .calculator-form .button { grid-column: auto; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { align-items: flex-start; flex-direction: column; }
  .mobile-quote-bar {
    position: fixed;
    z-index: 20;
    right: 0;
    bottom: 0;
    left: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    padding-bottom: env(safe-area-inset-bottom);
    color: var(--p-white);
    background: var(--surface-dark);
    box-shadow: 0 -1px 0 var(--border);
  }
  .mobile-quote-bar a { display: flex; min-height: 4rem; align-items: center; justify-content: center; gap: 0.5rem; font-size: 0.9rem; font-weight: 700; text-decoration: none; }
  .mobile-quote-bar a:last-child { color: var(--p-white); background: var(--action); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}